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1. Look for QI certification Wireless charging currently has two major international mainstream industry standards. One is the QI standard of the Wireless Charging Alliance (WPC), which has 300 members worldwide; one is the AirFuel Alliance, which has 195 members worldwide. These two standards have unified regulations on the performance, technical parameters, compatibility, and safety of wireless charging products, and have strict certification standards. At present, the QI standard is relatively mature and dominates the mainstream. To purchase a wireless charger, first check whether the product has passed the QI certification mark. In general, QI-certified products are of relatively reliable quality. 2. look for professional brands At present, domestic wireless charger manufacturers are large and small, as many as 1,000, and there are more than 300 brands. However, most of the brands are non-professional wireless charging brands, but new sub-brands built by some electronics factories, battery factories, 3C parts factories and even trading companies. These brands lack core technology and have weak research and development capabilities. Therefore, choosing a professional wireless charging brand is more reliable. 3. the price can not be too low The principle of wireless charging technology is very clear, but commercial applications are very difficult. Transmission efficiency, transmission distance, transmission performance, and protection measures are all highly technically difficult. Therefore, it is necessary to invest huge research and development costs, and it is necessary to use components with excellent quality, and the cost is high. For example, the price of a superior chip is more than ten yuan and twenty yuan. Therefore, the quality of wireless charging products that are too low in price is questionable. 4. the conversion efficiency is higher, the charging speed is faster There is a problem of conversion efficiency in wireless chargers. The current conversion efficiency of mobile phone wireless chargers is 60%-80%. Under the same conditions, the higher the efficiency, the faster the charging speed. However, efficiency is not the only factor that determines the speed of charging. Some manufacturers with strong technical strength improve the performance of the chip, optimize the design of the scheme, and adjust the current output to make the speed of wireless charging comparable to or exceed the charging speed of the cable. For example, New Page Technology has developed a wireless charging acceleration technology with standard wired charging speed and 2 times standard wired charging speed. 5. the working temperature can not be too high Wireless charging uses electromagnetic induction technology, and there are some heating problems during charging. The working temperature of high-quality products is generally below 40 °C, and it is warm and cold to the normal range. However, the operating temperature of some low-quality and inferior products can rise above 60 °C, and there is no intelligent temperature control component installed. Long-term use will damage the mobile phone, and there are potential safety hazards. 6. the protection function must be complete A good wireless charger should have intelligent functions such as foreign object detection, temperature protection, overvoltage protection, and overcurrent protection. The foreign object detection function prevents electromagnetic overheating caused by metal objects. Temperature protection automatically shuts off when the temperature is too high. Overvoltage and overcurrent protection can automatically adjust the voltage and current, maintain the stability of charging, and protect the mobile phone. If these features are missing or not working properly, the charging experience will be greatly reduced, and there are even certain security risks.

How to use the wireless charger 1. Put the wireless charging function on the wireless charging board. The position should be set and you can charge it. Note that some wireless charging panels support different models of mobile phones. You should select the wireless charging panel according to your mobile phone model. 2. currently does not support long-distance charging, may reach this technology in the future, what is wireless charging technology, according to a report in the United States, there have been research institutions have developed a wireless charger that can be long distance, this charger contains A transmitter with a plug, an electronic receiver, can be transmitted to the terminal device equipped with the receiver as long as it is within a certain range. 3. The wireless charger transmits by radio waves, which are not only an electromagnetic wave, but also transmit energy by itself, and can penetrate the air, thus making wireless power transmission possible. Is the wireless charger radiating? Researchers at the Massachusetts Institute of Technology say that the body responds strongly to electric fields, but the body reacts little to the magnetic field, so the system does not affect human health. However, this is only a speculation. Some researchers are worried about this point of view. Before they are actually used in life, they need to be further tested. As an electronic charging product, the charger itself cannot avoid radiation, so it is inevitable that the wireless charger has radiation. However, the power of the wireless charger is small, the charging time is long, and the generated radiation is small, and it should not cause great harm to people.

Wireless charger features 1. In theory, wireless charging technology is harmless to human body safety. The resonant principle used in wireless charging is magnetic field resonance, which is only transmitted between coils that resonate at the same frequency, while other devices cannot accept the band. In addition, wireless charging technology The magnetic field used is itself harmless to the human body. However, wireless charging technology is a new type of charging technology. With the wireless charger of Maiyuan Technology, many people will worry that the wireless charging technology will appear just like the Wi-Fi and mobile antenna masts. In fact, the technology itself is harmless. . 2. Wireless charging technology uses magnetic resonance to transmit electrical energy, coils and capacitors in the electric and magnetic fields between the charger and the device. 3. This system can be widely used in the future, such as charging areas for electric vehicles and power transmission for computer chips. The charging system developed with this technology requires only one-fifth of the current charging time. 4. conversion rate has been a concern for many people, MIT research shows that the loss of wireless charging technology is lower than wired charging technology. The wireless charging conversion rate is a few percentage points higher than the cable. High conversion is also a key factor in the global application of wireless chargers. However, wireless charging technology is also limited by distance. In the future, it is necessary to solve the problem of precise positioning of the long-distance transmission for the band and magnetic field range. 5. the core chip is one of the difficulties in the application of wireless charging technology. Precision radiation range control, magnetic field frequency, and other controls are all implemented by the chip.

With the advancement of technology, wireless charging has also emerged. The wireless charger is a charger that does not use a line. It wirelessly transmits electrical energy to the battery cells through the coils. Simply charge the battery and receiving device on the charging platform. The energy transmission efficiency is high, and it is easy to carry one of the research directions of the charging system. Then this issue is a small series for everyone to explain in detail the knowledge of wireless chargers. 1. Introduction to wireless charger The wireless charger refers to a charger that is connected to a terminal device that needs to be charged without a conventional charging power cord. The latest wireless charging technology is adopted. The wireless charging technology has obtained 20 patents in 2007, and one device can be used for multiple devices. Wired charging of charging base stations, mobile phones, MP3 players, power tools and other power adapters will not exist. By using the magnetic field generated between the coils, the magical transmission of electrical energy, inductive coupling technology will become a bridge connecting charging base stations and equipment. 2. Wireless charger principle The wireless charging system mainly adopts the principle of electromagnetic induction, and energy transfer through the coil is realized by energy coupling. As shown in the figure, when the system is working, the input terminal converts the AC mains into a DC power through the full-bridge rectifier circuit, or directly supplies the system with a 24V DC terminal. The DC power output after the power management module is converted into high frequency alternating current by the 2M active crystal oscillator to supply the primary winding. The energy is coupled through two inductor coils, and the current output from the secondary coil is converted into direct current by the conversion circuit to charge the battery. A changing magnetic field produces a changing electric field. A changing electric field produces a changing magnetic field whose magnitude is related to their rate of change. The rate of change of the sinusoidal function is another sinusoidal function, so the electromagnetic wave can propagate out and the induced voltage The generation is related to the change of the magnetic flux, so the magnetic field that changes inside the coil generates an induced voltage, thereby completing the charging process. Mobile phone wireless charging is a relatively new charging method, the principle is actually very simple, is to separate the main transformer secondary and secondary to achieve wireless purposes. Of course, the wireless charging frequency is relatively high, and even the core can be abandoned to directly achieve the energy transfer between the coils.

Notebook mobile power basic concept Notebook mobile power, also known as "external battery", "external battery", "backup battery", "digital charging companion." At present, notebook products are popular and frequently used. It is important to improve the use time of notebook products and to exert their maximum functions. Notebook mobile power is the solution to solve this problem. With a single power supply, you can supply power (power or charge) to your notebook anytime, anywhere. Basic definition of notebook mobile power 1. The general casing is made of ABS material or acrylic or aluminum alloy. 2, large capacity: can be called notebook mobile power supply, the general capacity is above 8000MAH. 3, multi-level voltage accurate output: according to different manufacturers set adjustable voltage gear position is also different, generally 5-19V multiple gear positions adjustable. 5V, 6V, 7.5V, 9V, 12V, 14V, 16V, 19V 4, many adapters, most are equipped with most notebook interfaces on the market. 5, smart protection chip, overcharge protection, overload protection, short circuit protection 6, battery low-voltage alarm, and automatically cancel the overcurrent. With the above conditions and DC output, and the output current reaches 3A or more, it can be called notebook mobile power. Notebook mobile power use precautions 1. Please use it when using it; 2. Please use the included adapter to charge the power supply; 3. Please do not use the adapter to charge the power supply for a long time; 4. Please do not use other adapters to charge the power supply; 5. Please do not use it in an environment exceeding 50C; Notebook mobile power basic parameters 1. Scrub cover, noble and elegant. 2. large capacity: up to 20000mAh, is 40 times the mobile phone battery, laptop battery 1 to 2 times. 3. Blu-ray LCD display, display voltage and battery power. 4. USB output: 5V. 5. multi-level voltage accurate output: 7.2V, 9V, 16V, 19V. 6. DC output voltage can be adjusted 5V, 7.2V, 9V, 16V, 19V, a variety of adapters, to adapt to the full range of mobile phones on the market, MP3, MP4, PDA, digital cameras, digital cameras and a full range of notebooks on the market. 7. intelligent protection chip, overcharge protection, overload protection, short circuit protection 8. battery low voltage alarm, and automatic release of overcurrent.

Portable mobile power, also called "external battery", "external battery", "backup battery", "digital charging companion", the concept of mobile power is developed with the popularity and rapid growth of digital products, the definition is convenient Easy to carry large capacity portable power. The functions of digital products are increasingly diversified and used more frequently. The question of how to improve the use time of digital products and maximize their functions is important. Mobile power is the best solution to solve this problem. With a single power supply, you can supply power (power or charge) to a variety of digital products anytime, anywhere. The capacity of the mobile power supply varies from 2000 to 20000mAH, and generally exceeds 18000mAH to supply power to the notebook computer. It is generally called universal mobile power. Less than 10,000 capacity, generally small size, are called portable mobile power, mainly used to charge digital products. The leading brand is Pinsheng Mobile Power. How to use portable power A. the output voltage of the mobile power supply must be within the range of 5.3V ± 0.5V, otherwise it can not charge some brands of mobile phones; b. The transfer joint must be matched. The principle of using the mobile power product is to charge the digital device through the USB cable. The end of the cable with the USB interface is connected to the mobile power product, and the other end is connected to the digital device, so the interface at the other end is Must be consistent with the interface of the digital device, otherwise it will not be able to charge. c. The mobile power supply should be handled in a dry environment. Rain, moisture, and various liquids or moisture can corrode electronic components and circuits. d. The mobile power supply cannot be stored at high temperatures. High temperatures will shorten the life of electronic devices, damage batteries, and age certain plastics. e. You cannot throw and tap the mobile power supply in a rough way. Rough use can damage internal boards and precision machinery. Mobile power usage precautions 1. avoid falling, especially careful not to squeeze Products such as electrical appliances have always been unable to withstand bumps, and mobile power supplies are no exception. Small mobile power supplies are actually complex battery cells. When they are bumped or squeezed, they can break the components inside, especially some people like to go with them. Put the mobile power under the seat, or put it on the bedside table, and press it with various magazine books. Please note that this is a cell that can easily damage the mobile power supply. 2. pay attention to temperature and humidity I think everyone has had such an experience. If the weather is wet, especially when going back to the South, the TV will turn a little blurry and the color will be distorted. This is the effect of humidity on the appliance. Of course, mobile power is no exception, so try to avoid storing the mobile power in an environment where the temperature and humidity are too extreme. If the weather is humid, you can use it more frequently and charge it. This is also a good way to protect it. method. 3. try not to use it without being fully charged This is like the maintenance method of the mobile phone battery. The mobile phone battery generally does not advocate the use of the battery when the charging is not completed, and the mobile power supply is also the same. Before the mobile power source charges the mobile phone, you must first fully charge the mobile power itself. In the process, try to avoid interruption when the charging is not completed, because it will also damage its life.

Mobile power is the best solution for the backup power of smart phones and tablets. How many types does it have? Below, we will introduce to you. In general, there are four different types of mobile power. The first is a normal charging function mobile power supply. This type of mobile power supply is one of the more mainstream mobile power types in the market. They do not have any extended functions and can only be charged and discharged. Most of their shapes are more fashionable, and they use flexible packaging batteries, which are professional external portable mobile power supplies. The second type is a multi-functional mobile power supply, which is also a popular one. In addition to the charging and discharging functions of mobile power, they also integrate some other practical functions, such as products such as Lijie Magic, Shangyi Series and Yubo YB-462, all with LED lighting. The third is a professional back clip mobile power supply. This mobile power is built for Apple phones and can be installed directly on Apple phones, but it can only be used on Apple phones, and the user selectivity is relatively small. The fourth is a mobile power supply with solar charging. This mobile power supply is equipped with solar panels, which can be charged by sunlight during use. The current practicality of this type of mobile power supply is not very strong. It must be charged in places with sunlight, and the power conversion rate of solar energy is too low, so the current penetration rate is not high.

First of all, from the appearance point of view, ordinary mobile power and smart mobile power can not see any difference; The biggest difference between ordinary mobile power and smart mobile power is the circuit board inside the mobile power supply. The circuit board of the ordinary mobile power supply is generally composed of discrete components. It cannot be programmed and controlled, and only some basic ones can be hardly realized. Features. The smart mobile power supply uses a smart chip processor, which can be programmed, that is, there is a microcomputer that controls it, can implement any automatic detection function, or can be called a mobile power source with a head. Just like the current mobile phone, the previous one is a regular mobile phone, and now everyone is using a popular smart phone! Intelligent mobile power identification method: When the smart mobile power source charges the mobile phone, as long as the mobile phone is connected with the mobile power source, the mobile power source automatically recognizes the mobile phone and charges the mobile phone without any other operation; there is also a corresponding indicating circuit when charging; When fully charged, the smart mobile power will automatically turn off the output and go to sleep to save power for your mobile power and will not damage your phone.

At present, in the mobile power market, there are generally two types of batteries, one is 18650 batteries, and the other is polymer batteries. These two batteries dominate the market for the vast majority of the lithium battery industry. In many netizens mentioned mobile power batteries, I am here to explain the two types of batteries commonly used in mobile power. 18650 batteries 18650 is a standard lithium-ion battery model set by Japan SONY Company in order to save costs. Among them, 18 means diameter is 18mm, 65 means length is 65mm, 0 means cylindrical battery, common 18650 battery is divided into lithium. Ion battery, lithium iron phosphate battery. 18650 capacity regular size There are generally 2200mAh, 2400mAh, 2600mAh capacity standards. According to industry insiders, the current 18650 has achieved a maximum single-block capacity of 3400mAh. If the mobile power source uses 18650 as the battery core, it is basically the above several specifications and connected together. 18650 packaging The 18650 is generally packaged in steel, that is, 18650 lithium ions are in a liquid state, just like a cup filled with water, similar to this understanding. Therefore, the 18650 can only be cylindrical. If you buy a mobile power supply and see a thick and large mobile power supply, it is basically 18650 batteries. 18650 security Due to the particularity of the 18650 package (with steel shell), if the quality of the products produced is not enough, the biggest danger is the explosion. The explosion caused by the notebook in previous years is because of Sony's laptop battery (usually using 18650). There is a problem with quality control. Lithium polymer battery Lithium polymer batteries, the raw materials are generally mixed with lithium cobalt oxide, lithium manganate, and ternary lithium. Through a certain proportion of the three mixtures, a certain process is used to make the outer packaging mainly using aluminum plastic film, and the lithium material in the middle is paste. So the shape can be customized. At the same time, you can make ultra-thin batteries, such as ultra-thin batteries such as 0.33mm and 0.50mm. Lithium polymer cell capacity Since the polymer battery can be of any size, it has no standard shape. The general volume is marked as long * wide * thick. In addition, the battery has a positive and negative tolerance, the length and width are 0.5 mm, and the thickness is 0.55 mm. (These two positive and negative tolerances. Therefore, the polymer is determined by the size of the volume, and also related to the ratio of the use of lithium raw materials. Lithium polymer battery safety The outer surface of the polymer battery is made of a layer of aluminum plastic film, and a layer of high-temperature adhesive tape is applied outside. The maximum safety of the polymer is that it leaks, short circuit, and causes the package to rise. The worst case is the burning and the flame. Therefore, compared with the 18650, the polymer battery is better in terms of safety. However, burning also poses a safety hazard, so users who use mobile power are advised not to put the mobile power on the pillows, these places on the bed. At present, the mobile power market, the relatively large shipments are still 18650, the vast majority of mobile power is using 18650. At present, the vast majority of high-end mobile power market is using polymer batteries to do mobile power. From a certain degree, it is recommended that users buy mobile power of poly and battery cells better, especially for large capacity. Mobile power, such as 8000mA or more, if there is a safety accident, it is not fun, and the mobile power supply of the polymer battery is at most a small spark, which is unlikely to cause an explosion.

1. Mobile power has gradually become a necessary tool for people to live and work. Mobile power is not only defined internationally as a consumer electronics product, but more importantly as a daily tool for living and working. Since the mobile power source realizes the portable application of electric energy, it has a deeper and wider influence than the commonly defined daily tool products (pen, knife, flashlight, dictionary, etc.). Especially in mobile digital devices (mobile phones, PDAs, mp4.dvd, laptops, etc., as well as usb-b portable devices), the performance of people in daily life and work is becoming more and more important today, mobile power is also increasingly highlighting its role as a life and The meaning of important tools for work. We can define it as an electronic tool, which is the strong backing of all kinds of mobile digital devices; we can define it as a home-based tool, which can completely replace all the battery products that may be needed in the home life (5v or 7v). Disposable batteries or rechargeable batteries, etc.), large capacity, easy to use, low cost of sharing, and environmentally friendly, especially with usb-b portable devices into the life, its application will be more extensive, such as supporting usb light applications Replace the dangerous and weak candles, with the usb eye massager, you can conveniently lie on the sofa to enjoy the home medical equipment with usb connector, no need to consider the position of the plug and the winding power cord. . Etc.; we can also define it as a work class tool, a learning class tool, a travel class tool, and so on. 2, mobile power is the right choice after your scrutiny The biggest feature of mobile digital devices is its mobile usability, but due to the limited battery capacity of original devices, mobile digital devices cannot be used for a long time. If you want to make more use of the functions of mobile digital devices, you can only use two methods, one is to add one or more equipment batteries (some digital products use disposable batteries or rechargeable batteries), and the other is to buy a mobile power supply. The following two comparisons are made in terms of applicability, usability and economy: applicability: ※ The original battery of the device is only suitable for the original equipment, and the mobile power supply can only charge or supply and charge a variety of digital devices with only the adapter, and is not limited to the brand and model. ※ Mobile power can be widely used in USB On-the-Go (USB-OTG) portable devices (usb lights, fans, massagers, medical equipment, etc.), covering a wide range. ※ Some digital products (such as tape recorders, repeaters, cd, old-fashioned dc, etc.) are portable through disposable batteries (No. 5 or No. 7) or rechargeable small batteries (No. 5 or No. 7). Can replace these battery products, also achieve convenient mobile use. ※ Some models of mobile power supply with suitable connectors can become a [universal charger" and one can charge multiple digital devices at the same time. You don't have to add a lot of chargers that bother each other because of the increase in digital products around you. Usability: ※ The capacity of the mobile power supply is usually several times that of the original battery, and the capacity can be up to 8 times or more than 8 times, so that multiple charging or long-term power supply can be realized. ※ Some digital devices (PSP, laptop, mobile dvd, etc.) must be replaced when the original battery is replaced. The mobile power supply can supply power to the device without affecting the operation of the device. This is the embodiment of the product's humanized design. ※ Some mobile power supplies are designed to be compact and even easier to carry than original batteries, making them easy to use. Economical: ※ The original battery of the equipment is usually expensive, not the quality of the original battery. The good quality mobile power is several times the original battery, but the price may not be the same as the original battery. Some even Lower. ※ The mobile power supply has a wide applicability, so it does not have a variety of batteries with a variety of digital devices. The original battery that was added may be wasted due to the update of digital products or the negligence of losing digital devices such as mobile phones. ※ The mobile power supply has high capacity and wide application range. It can be used by many people in the family or work group, and can even provide emergency help to friends who need it. ※ The mobile power supply can supply power to digital devices that use small batteries (disposable or rechargeable), and also achieve mobile use, which makes the use cost lower and more environmentally friendly. ※ The mobile power supply has a long service life. It is usually designed to maintain 70-80% of the capacity after charging and discharging for more than 500 times. It can be used for more than 5 years according to the average 2 times per week. In comparison, the time cost is lower.

First, how to properly use and store mobile power? 1. Proper charging Most of us seem to be accustomed to charging smartphones and mobile power when we run out, because we think this will maximize battery protection. In fact, we should avoid charging the mobile power when there is insufficient power, which means avoiding excessive exhaustion of the mobile power battery. 2. Do not play while charging When the smartphone is charged by mobile power, we should remain independent. More importantly, we better not answer the phone while charging. Otherwise, this can damage both devices and this action looks dangerous. 3. Avoid falling If the power is dropped, it may cause internal or physical damage. So we need to pay attention to the location of the mobile power charging, keep enough. 4. Use temperature and storage We seem to be keen to charge smartphones with mobile power and put them in the bag when we are outside. We need to know that heat is unavoidable when charging. If you put it in a sealed bag in the summer, it looks dangerous. 5. Mobile power should be equipped with intelligent protection device Second, how to maintain the mobile power when not in use 1. Occasionally charge the mobile power once We also need to periodically charge mobile power, at least once a month. In order to maintain good performance, regular charge and discharge can help extend the life of mobile power. 2. Please pay attention to temperature and humidity The effects of the humidity of the appliance can be clearly seen on rainy and cloudy days. Moist air can damage mobile power, not to mention water. We should try not to expose the mobile power in a humid environment. The temperature is the same. In short, it should be stored in a dry and cool place to extend the life of the mobile power supply. Finally, in terms of maintaining mobile power, the method is different due to the outermost material. Metal, plastic and aluminum alloy materials have different cleaning methods if needed. Then, one thing they have in common is to avoid high temperatures, scratches and drops.

Mobile phone power supply has been used by many people, it is a matter of something, there is a problem, and can not completely deny the mobile power supply of this mobile power manufacturer is not good, a thousand of the best products, will also flow out A defective product, even a global brand like Apple does not guarantee that the use process will not be a problem. Is your mobile power supply a fake? When you encounter this problem, you must first look at the mobile power in your hand. Is it genuine? We don't have the instrument to detect it. We can't go to any store to buy it at the moment. Then we only have to feel it first. If you find that the mobile power and appearance are very different from each other, then it will be faded, paint-painted, etc., then no doubt, the mobile power you bought is inherently problematic. Some mobile power sources are unreliable, some are fake brand-name mobile power supplies, so don't use mobile power for a long time. That kind of product is a temporary emergency use, charging the phone or using an authentic original mobile phone charger. The above prompts that there is power, why is there no response? There may be a battery loss, or the voltage is too high. If the test is degraded, you can find a universal charger with an indicator light. This is the universal charger that can be lit when the battery is put on. Do not plug it into the socket. If the light is on, it proves that the battery is not losing power, but the contact is bad or the voltage is high. If some mobile phones detect that the battery voltage is higher than a certain value, it will not be turned on. What is your battery? No more can be analyzed according to the model. If you have power, it may be that the voltage of the battery is not enough. For example, your mobile phone battery has 700 mAh of power, and you have 800 mAh in your mobile power. When the battery power of the mobile phone is 750, the mobile power is also Only 750, this 750 is not in the mobile phone, because the mobile power supply has a lithium battery protection circuit inside, and a boost circuit that raises the voltage of the lithium battery to the charging voltage of the mobile phone. Only the voltage of the mobile power source is higher than the mobile phone. To charge the phone. Summary: Mobile power is generally less problematic. Most of the problems are caused by a problem with the circuit board inside, or the mobile power supply has reached the end of its life, and it cannot be stored. No matter what kind of problem is not solved by our users, this is only sent to the warranty, or to the mobile power supply.

How much capacity does the mobile power supply have? A good question about buying mobile power capacity and what brand of mobile power. In fact, as long as we have a closer look, we know how to choose this. Before the mobile power network, we have done analysis of such questions. 1. buy mobile power is to buy a product that can last longer, so the capacity is of course the bigger the better. However, the size of the volume is proportional to the weight of the body. Going out with a heavy thing in the pocket is also relatively heavy, which brings some cumbersomeness to your trip. The volume of 4000-8000 is generally 200-500. Within the gram, this can be decided according to the actual situation. For example, the shell used is different and the weight is not consistent. 2. mobile power conversion rate, which is currently a relatively unrecognized place for users, from the mobile power network real evaluation of several data, the current mobile power conversion efficiency is not very good, the greater the mobile The specific energy of the power supply relative to the output is large. Therefore, this is also the reason why you recommend purchasing a large-capacity mobile power supply.

For example, the original mobile phone, the basic function is to answer the phone, send and receive text messages. Gradually, with MP3, MP4, video calls, until now the popular 3G intelligent network and other unprecedented features. In the past, only computers were able to access the Internet. Now, as long as a mobile phone can run some functions of the computer. The owner of the mobile phone, the most important thing besides the quality of the mobile phone, is the standby time of the mobile phone battery. The mobile phone has more features, and it must be played out when it is free. Listen to songs, play games, read novels, watch movies, and chat. It usually feels that the use time is extremely insufficient. Not only mobile phones, but other digital products. When I saw a beautiful scenery and wanted to use the love machine to freeze this beauty, I found that the mobile phone had no electricity. Is it super frustration and even madness? When you are on the train, play with your notebook, and turn off the power every hour. The depressed mood can be imagined. Due to the limitations of the environment, in this case, we are often unable to find power in time to charge our digital products, which not only affects our mood, but also causes inconvenience to our lives and work. In order to solve this problem, the smart lazy invented something called mobile power. Although mobile power has become one of the must-have items for digital people, there are still many people who do not know about this product. Baidu, you know: mobile power is a portable charger that integrates power supply and charging functions. It can charge or use digital devices such as mobile phones, MP3, MP4, mobile phones, PDAs, PDAs, handheld game consoles, etc. anytime, anywhere. powered by. The popular one is the large-capacity battery, which is used with a variety of digital adapters. It is usually characterized by large capacity, versatility, small size, long life and safety. So, someone will ask, is the capacity of the mobile power supply as large as possible? Mobile advertising everywhere can be said without exception: large capacity, long standby. It is not a hard disk. The bigger the memory, the more things are stored. In fact, what do you want to do with such a large capacity? Personally feel that it is enough. And the larger the battery capacity, the longer the charging time. What's more serious is that the larger the battery capacity, the more energy it stores, and the more explosive it is, but the probability of this happening is still very low. Some batteries in the cottage can reach more than 10000mA, which is very dangerous and easy to explode! Some battery capacity is simply a virtual standard, the logo is 5000mA, which is actually not that big, but you have spent 5000mA. Generally, when the mobile phone is charged once, it can be used for a week or so. The premise is not to play games, not to watch videos, not long time calls, text messages. Under normal circumstances, we will always pick a large capacity, but there is a misunderstanding. Battery capacity is limited by the size of the cell, and today's cell manufacturing technology has not yet improved the cell capacity. Taking the original battery of the mobile phone as the standard, the corresponding battery capacity of the domestic high-capacity commercial battery is usually increased by 10%-20%, and if the nominal capacity of the battery is increased too much than the original battery capacity, it is a virtual standard battery. . In general, the battery capacity of mobile power is not as big as possible, but it is best for you.

The mobile power source is mainly composed of a battery core and a protection circuit board including various intelligent control chips. The cell of the mobile power source is mainly a high-capacity polymer lithium ion battery or a liquid lithium ion battery. The lithium ion battery has high voltage, high energy density, relatively light weight and mature production process. But because of the high energy density, it is very important to use it correctly, otherwise there may be some danger. Therefore, the batteries produced by regular manufacturers have perfect protection schemes, and have strict control on the charging and discharging circuits of the batteries. The protection circuit is designed for rechargeable batteries such as lithium-ion and lithium-ion polymers. It mainly provides over-charging, over-discharging and over-current protection. In addition, some circuits provide protection from the protection state, and some also Provides the function of charging 0V battery, which depends on the design capability and technical strength of the manufacturer. The protection IC in the protection circuit integrates a high-precision voltage detection circuit and a delay circuit, which can accurately collect the subtle changes of the loop voltage and control the on-off according to the length of the delay, thereby protecting the battery and the charged device. effect. In theory, mobile power is relatively mature, and products of different brands are only slightly inconsistent in details. But this is only for regular manufacturers of battery products. It is necessary to fully apply and embody the technical maturity into the product, that is, the production of high-quality products depends on many factors such as technicians, manufacturing equipment, production process, process control, product testing system, etc., from raw materials to finished products. The completion of the products one by one, the more attention is paid to the products produced by the regular manufacturers of each production detail, the more the product can be added to the safety and reliability of the products. Relatively speaking, those manufacturers who are not formal or have low production capacity usually use the media or packaging to render mature technology or unique technology in the market. This is just a piece of paper, and it is completely irresponsible to customers and consumers. The key to the security of mobile power usage is how to choose a trusted product in the market before purchasing. How to prevent mobile power explosion 1 Avoid placing the mobile power source in a place with high ambient temperature, such as summer exposure and closed compartments, near high heat sources such as ovens; 2 In daily use, avoid lithium. The positive and negative electrodes of the lithium battery should be in contact with metal. If it needs to be stored separately, use a battery case that is safe and reliable and has excellent insulation. 3 Lithium battery mobile power needs to be used frequently to achieve the best life. When it needs to be placed for a long time, it should be charged to the specified power and stored in the corresponding temperature environment (you can search for it yourself). 4 If the charging treasure has been shown as fully charged, the power should be unplugged. 5 When the mobile power lithium battery is damaged or the power is obviously reduced, it should be sent to the designated recycling station for recycling, and it should not be discarded at will. In fact, the maintenance of mobile power is very easy, you just need to remember that mobile power is afraid of heat, fear of impact, fear of water, to avoid all these situations appear OK. Mobile power inferior battery safety hazard Mobile power, mobile power, mobile phone, friends who are concerned about news, or you may encounter an event of explosion of mobile power. This has brought a lot of negative image to the mobile power industry market. The reason why mobile power will explode is because some cottage mobile power manufacturers use inferior batteries, and it is more likely to use recycled second-hand batteries. Emerging mobile power explosive products The reason why mobile power is so hot, the first is because it is in the development stage, in line with user needs, so there is a market. Second, the gross margin of mobile power that turned out to be close to 50%, so it will cause today's seemingly hot scene. This has also stimulated the army of the cottage, and in the short period of time there have been a large number of products of varying quality. It is precisely because of the opacity of the mobile power market, coupled with the extremely low cost of the cottage, so that they have the explosive mobile power products. Security mobile power supply The cottage brand is limited by its own strength and research and development costs. The mobile power source it produces uses low-cost, low-quality batteries, and the workmanship is poor and hidden. These inferior mobile power sources, hope that parasitic in the current hot mobile power environment, to seize the market at low prices to seek profit. If these inferior mobile power flows to the market and flow to the consumer group, then the smart phones and electronic products, and even personal safety issues will not be guaranteed. What kind of batteries are easy to make mobile power "grenade"? Turning on the previous battery explosion news, you will find that the quality of the battery is often the most direct cause of the event. So what kind of batteries are easy to make mobile power "grenade". Although the structure of the mobile power supply is simple, the conditions for the actual manufacturing are very high. Without professional factories and professional technologies, the standard requirements are not met. If there is no rigorous production process, there is no board and shell material that meets the requirements, and even the core of the mobile power source is also a "cottage". Such mobile power security risks are extremely terrifying, and it is very easy to become a stealth grenade. Most of the cottage mobile power supplies are second-hand used, refurbished batteries or tractor batteries. These batteries have one characteristic, that is, the safety hazard is extremely great. Summary: The circuit protection board of these inferior batteries is also unqualified, which not only has a short service life, but also seriously threatens the equipment and personal safety. Therefore, friends who go to the mall to buy mobile power mobile phones must polish your eyes.

Polymer lithium battery charging method At present, lithium charging is mainly a voltage limiting current limiting method. The initial constant current (CC) charging has the strongest battery receiving capacity. As the charging process continues, the polarization is strengthened, the temperature rise is intensified, and the voltage rises. When the charging reaches about 70. At ~80%, the voltage reaches the maximum charge limit voltage and is switched to the constant voltage (CV) charge phase. In the constant voltage phase, there is a trickle charge, which takes about 30% of the time to charge 10% of the charge, the current intensity decreases, and the temperature rise does not increase. This process considers the total voltage or average voltage control of the battery pack. In fact, there is always a higher cell voltage, and other batteries in the opposite group have entered the overcharge phase. Similarly, during discharge, there is an overdischarged battery in the group. Overcharge and overdischarge are fatal to the battery. The only difference is that overcharge generates a large amount of gas, is prone to spontaneous combustion and explosion, and the appearance is severe; The appearance changes slowly, but the failure speed is extremely fast, and should be strictly avoided in normal use. In this regard, there is a new lithium battery charging method called parallel control and equalization management, which can charge and discharge management and equalization control for each power module. This dynamic equalization concentrates the two equalizations of discharge equalization and charge equalization. The advantage is that although the initial capacity, voltage, internal resistance and the like are different between the individual electric cores, the relative charge and discharge intensity and depth consistency can be ensured in the work, and the common end of life is gradually achieved. This method is particularly suitable for high current discharges. Therefore, when charging the lithium battery, be sure to use a dedicated lithium battery charger, especially pay attention to the parameters of the battery used. It must be consistent. When the lithium battery is used in combination, it must be added to the battery pack. The protection board can avoid the battery pack, leakage, and even fire and explosion, and prolong the service life of the battery as much as possible, but it can not be charged and increase the number of cycles of battery use. Lithium polymer battery maintenance method As a new battery product that has been innovated after the lithium-ion battery, lithium polymer batteries have some points to be aware of in their use. First of all, it is a feature of lithium polymer batteries. Compared with lithium-ion batteries, lithium polymer batteries have improved the problem of battery leakage, but they have not been completely improved. In addition, the lithium polymer battery can be made into an ultra-thin battery, which can reach a capacity of 3.6V at 400 mAh in a thickness of 0.5 mm, and a lithium polymer battery is 10% higher than a conventional lithium ion battery in terms of discharge amount. In daily use, as a kind of lithium ion battery, lithium polymer batteries are also often afraid of short, external short and overcharged inside the battery. The reason is because the chemical nature of lithium is very active. When the battery is discharged and charged, the inside of the battery will continue to heat up. When the temperature is too high, it may explode. Therefore, when using the battery, try not to overcharge and discharge, that is, use the battery smoothly and in a planned manner, do not let the battery run out easily, and do not charge for a long time (usually 8 Within hours is the most appropriate).

Misunderstanding 1: The bigger the capacity, the better. Since capacity is the most important parameter that directly affects the length of our use, in many people, the capacity of the mobile power supply is as large as possible. In fact, there is nothing wrong with this, but for lithium batteries, the increase in capacity will inevitably lead to double increases in volume and price. Most people buy mobile power only for emergency charging of mobile phones or other digital devices during short trips, business trips or daily use. Therefore, in terms of capacity selection, 5000mAh products are more susceptible to people than other capacities. favorite. However, for other consumers, the purchase of mobile power is only used in special circumstances such as the mobile phone forgetting to charge when going out. Those with a nominal capacity of 2000-3000mAh are also a good choice for products with smaller size. Therefore, for mobile power, the larger the capacity, the better. After all, capacity is just a parameter that can measure the usage time. When purchasing, you should choose your actual needs, and avoid blind pursuit of "large capacity." However, on the issue of capacity, I believe that many people have bought mobile power and found that in actual use, about half of the capacity can be used, then where is the remaining capacity? Misunderstanding 2: Cell capacity = actual capacity The second misunderstanding is the capacity of the mobile power battery. Unless otherwise stated, the [capacity" indicated on the mobile power supply package currently on the market is the capacity of its internal battery. It is not understood as [can The capacity actually used." This is why many people buy a mobile power supply with a capacity of 5000mAh and find that it is impossible to fully charge the mobile phone with a battery capacity of 1500mAh three times. For most mobile power supplies, the [capacity value" marked on the outer package is simply the value of the internal lithium battery (typically 3.7V or higher). At present, most mobile power supply output interface voltage is 5V (or higher), so between the battery core and the output interface, a boost (or buck) conversion process is required to change the electrical energy from the 3.7V voltage of the battery core. Into 5V voltage. The energy output by the battery cell is boosted or stepped down by the circuit board inside the mobile power supply, and finally reaches the output end. In this process, according to the design of different internal circuit boards of the mobile power supply, the work materials are different, and the conversion capability is There will also be a certain gap, and a part of the power will be lost in the entire power conversion. For the current "capacity value" marked on the mobile power supply package, it is not the "capacity value" that we can actually use. In addition, there are some gaps in the charging circuit inside different mobile phones or other devices, which makes the actual output capacity value of the mobile power source different according to different charged devices. But can we really understand the true output capacity of mobile power more intuitively? The answer is no, in some of the usual articles on our ZOL mobile power channel, the continuous discharge test is performed using the parameters marked on the outer packaging of the product, resulting in a relatively accurate nominal output capacity for the convenience of users and others. The product is more intuitively compared. Myth #3: The more accessories, the better? Since most mobile power supplies use an ordinary USB interface, some manufacturers will have different numbers of charging adapters in order to increase the compatibility of products with other charged devices. However, in some people's eyes, the number of adapters attached to the mobile power supply is one aspect that they value when purchasing. It is worth noting that most mobile power manufacturers on the market are equipped with an interface and a cable that can charge the mobile power itself. If the charging interface of the user's mobile phone and the device is compatible with the interface attached thereto, then this line The dual-use design is also very practical for most people. For those with fewer digital devices, do we really need the adapters that come with the mobile power supply? There is only one answer to this question: the benevolent sees the wise and sees wisdom. Some people think that the more the number of adapters, the better, so that when you go out, you are not afraid of being unable to charge because there is no adapter. Others believe that the various adapters included with the mobile power supply are not as convenient as the data cables that come with the phone. For this problem, it is still necessary to determine according to our actual use needs. Myth 4: Easy to ignore output current The current that each output interface of the mobile power supply can provide is a parameter that many people tend to ignore when selecting. Because at the same voltage, a current that is more similar to the nominal parameters of the device being charged can make the charging process more efficient. For example, a mobile phone with a charging parameter of 5V/1A can use a mobile power supply with a 5V/1A output interface to obtain a faster and more efficient charging effect when charging with a mobile power supply with output parameters of 5V/500mA and 5V/1A. In addition to the output current, the input current of the mobile power supply is also a place we need to measure at the time of purchase. For example, a large-capacity mobile power supply with an input parameter of 5V/500mA and a capacity of 10000mAh, even if the user uses a 5V/1A charger to charge it, it takes more than 20 hours to be able to Fully charged. Who can bear this long charging time? Myth 5: The use of temperature has a so-called Since most mobile power sources currently use lithium ion batteries or lithium polymer batteries as internal storage units, it is a detail that many people tend to ignore at the use temperature. If the ambient temperature is too low or too high, it will cause permanent damage to the lithium battery inside the mobile power supply. Therefore, in our daily use, we should try to avoid using the mobile power in the harsh environment. Some mobile power manufacturers will indicate the temperature range of the product in the outer packaging or instructions of the product. This can be said to be a very good guide for the daily use of the user. Especially for those who have a car family, in the hot summer, do not put the mobile power in the sun and the unmanned car for a long time. Due to the sun exposure in summer and the closed state inside the vehicle, the internal high temperature can easily exceed the upper temperature limit of the lithium battery inside the mobile power supply. Lightly, the internal battery of the mobile power source is scrapped, and in the case of explosion, there is a danger of explosion and fire. This is still very worthy of attention for those who have car owners. to sum up: I believe that after reading this article, you can be aware of the choice of mobile power, to avoid the situation of being fooled. At the same time, while the mobile power supply provides various conveniences for our lives, we also need to avoid the misunderstandings that affect its performance and personal safety, such as high temperature. After all, in the current mobile power market, some cottage manufacturers will spare no effort to maximize product profits, directly leading to the existence of various security risks. The damage caused by the equipment is small. If it causes personal injury, then it will not be worth the loss. Polymer cells are safer than 18650 cells I don't know when it started to be popular. The 18650 battery has the danger of explosion, and the worst case of polymer battery is fire, it will not explode, so the polymer battery is 18650. The core is safer. Although there is some truth to this statement, as manufacturers' manufacturing processes mature, more and more large manufacturers are using 18650 batteries. The so-called 18650 cell is a type of lithium cobalt oxide battery, of which 18 means a diameter of 18 mm, 65 means that the battery height is 65 mm, and 0 means that the shape of the battery is cylindrical. Today's 18650 batteries often have the advantages of stable discharge performance, stable endurance time, and low probability of explosion. Although the polymer cell is theoretically safer, the lithium ion inside the cell is paste-like, and the external package is made of aluminum plastic film. The texture is soft, easy to deform, and not resistant to collision. Therefore, the technical difficulty is large. Manufacturers have high production requirements. At present, there are only a few manufacturers capable of producing high-quality polymer batteries in China, and the overvoltage protection adopted by different manufacturers is very different. Therefore, in the domestic market, polymer batteries are not necessarily safer than 18650 batteries. So-called test report For mobile power, so far there is no such thing as a national unified certification standard. That is to say, all the test reports produced by the manufacturers on the mobile power supply are the third-party agencies and enterprises to negotiate the test items. The lack of uniform testing means that in the test report, it is very likely that people will get money and people to eliminate disasters. Does the mobile power supply cause damage to the device? Consumers have long been concerned about whether mobile power will cause damage to the device. In fact, the meaning of mobile power for mobile phones, tablets and other devices is the same as ordinary power. Therefore, in the case of normal use, there is no harm to the electronic device. However, if you choose a poor quality mobile power supply, the unstable current is also likely to cause harm to the mobile phone. In summary, when buying mobile power, everyone still try to buy products from large manufacturers.

Basically, mobile power is generally not taught, and it will be used at a glance. However, what should you watch out for when using mobile power? Mobile power is called mobile power, so the name is that it is light, compact and easy to carry. Usually everyone's use is to connect the device that needs to be charged directly with the USB data cable. Then the mobile power supply starts charging the equipment you need. In use we should notice the following items. 1. The output voltage range of the mobile power supply. Although some devices have a USB interface, you also need to use the mobile power supply. However, you should pay attention to the input voltage range of your device. The universal mobile power supply has a voltage output range of 5.3 -0.5v. If your device requires an input voltage range that is not within the mobile power range, we recommend that you do not use mobile power to power your device to ensure the life of your mobile power source. 2. The USB connector must be matched because the devices corresponding to the various USB data lines are different. Therefore, in order to use your mobile power supply to power your device, please use the matching USB data interface. 3, the placement environment of mobile power, all kinds of electrical appliances need to be placed in a dry, low air humidity environment, and the environment of high humidity is unfavorable for the preservation of all kinds of electrical appliances, so, for the use of your mobile power For life, please put the mobile power in a dry environment. 4, often use your mobile power, charging and discharging the mobile power once a month, often used. It can maximize the service life of mobile power. 5, anti-drop and shockproof. Mobile power is actually a fragile component, and internal components cannot withstand beating. In particular, prevent accidental landing during use. Do not throw, knock or shake the power supply. Rough handling of mobile power will destroy internal boards. 6, anti-cold and heat. Do not place the mobile power supply in an area where the temperature is too high. High temperatures can shorten the life of electronic devices, destroy mobile power, and deform or melt some plastic parts. Also do not store the mobile power in a cold place. When the mobile power supply is operating in a cold environment, when the internal temperature rises, moisture will be formed in the mobile power supply, destroying the circuit board. 7, anti-strength chemicals. Do not use harsh chemicals, detergents or strong detergents to clean the mobile power. Remove the appearance of the mobile power. The stain can be scrubbed with a small amount of anhydrous alcohol. 8. Many people on the Internet now have such questions. Using mobile power will not damage your mobile phone, tablet, camera and other digital products. Please rest assured. Mobile power is just for the convenience of powering all kinds of digital products. As long as you buy a mobile power supply from a regular manufacturer, there is basically no damage to all kinds of handheld devices, but if you buy a cottage, black workshop production Mobile power, then it is hard to say.

The concept of solar mobile power is developed with the current energy crisis and the growing environmental problems caused by petrochemical fuels and the popularity of digital products. Since the traditional mobile power supply can not solve the energy problem, the solar mobile power supply came into being, which not only compensated for the energy saving and environmental protection of the traditional power supply, but also the portability and charging. The solar mobile power source mainly converts the light energy into electric energy through the photoelectric conversion board and stores it in the built-in lithium battery with a certain capacity, and then passes the electric energy of the built-in battery through the output interface to the mobile phone, the digital camera, the MP3, through the control circuit. The MP4 and other products are charged. The principle is that the one with the high power flows to the lower battery, and the same is true for the place where the gravity potential is low. Solar mobile power is also called solar charger, uninterrupted universal charger. There are two ways to store solar energy: solar charging and power charging. 1. Place the solar mobile power supply in the sun to charge it. The green light indicates that the battery is being charged. In the case of good solar energy, the charging time can be fully charged in about 12 hours (the charging time depends on the strength of the sun). 2. When charging the solar charger with household electric power, the indicator light is green, about 8-10 hours can be full, and the indicator light is off to indicate that the battery is full. Solar mobile power features: 1. Energy saving, environmental protection, safety, convenience, long life and wide application. 2, solar mobile power supply uses solar energy, no need for commercial power, no post-operation costs, saving electricity, is the country's green energy-saving energy. 3, solar mobile power can be installed arbitrarily, regardless of location restrictions, easy to install and use, where there is sunshine where there is electricity. 4. Solar mobile power supply has high technology content, advanced technology, low failure rate, basic maintenance-free, and minimal maintenance. 5, solar mobile power supply operation is simple, as long as the press has a power output. In actual use, the charging status of the solar mobile power source has a great relationship with the weather. The area of a solar mobile power source is also 0.01 square meters. Under sufficient sunlight, it can generate up to 1.4 watts of electricity. If it is full of 10000 mAh. The power of the capacity is 26 hours, which is the best estimate, actually much longer than this time. That is to say, the solar mobile power source is actually a solar charging concept, which has become a dispensable function and has no practical use value.

a, the output voltage of the mobile power supply must be within the range of 5.3V ± 0.5V, otherwise it can not charge some brands of mobile phones; b. The transfer joint must be matched. The principle of using the mobile power product is to charge the digital device through the USB cable. The end of the cable with the USB interface is connected to the mobile power product, and the other end is connected to the digital device, so the interface at the other end is Must be consistent with the interface of the digital device, otherwise it will not be able to charge. c. The mobile power supply should be handled in a dry environment. Rain, moisture, and various liquids or moisture can corrode electronic components and circuits. d. The mobile power supply cannot be stored at high temperatures. High temperatures will shorten the life of electronic devices, damage batteries, and age certain plastics. e. You cannot throw and tap the mobile power supply in a rough way. Rough use can damage internal boards and precision machinery. Mobile power usage precautions 1, avoid falling, especially careful not to squeeze Products such as electrical appliances have always been unable to withstand bumps, and mobile power supplies are no exception. Small mobile power supplies are actually complex battery cells. When they are bumped or squeezed, they can break the components inside, especially some people like to go with them. Put the mobile power under the seat, or put it on the bedside table, and press it with various magazine books. Please note that this is a cell that can easily damage the mobile power supply. 2, pay attention to temperature and humidity I think everyone has had such an experience. If the weather is wet, especially when going back to the South, the TV will turn a little blurry and the color will be distorted. This is the effect of humidity on the appliance. Of course, mobile power is no exception, so try to avoid storing the mobile power in an environment where the temperature and humidity are too extreme. If the weather is humid, you can use it more frequently and charge it. This is also a good way to protect it. method. 3, try not to use it without being fully charged This is like the maintenance method of the mobile phone battery. The mobile phone battery generally does not advocate the use of the battery when the charging is not completed, and the mobile power supply is also the same. Before the mobile power source charges the mobile phone, you must first fully charge the mobile power itself. In the process, try to avoid interruption when the charging is not completed, because it will also damage its life.