Will fast charging technology affect the life of the battery?

Fast charge is the abbreviation of fast charge. Generally, it can shorten the charging time by half or more, but it can only be used in the field of mobile phones at present. Regarding mobile phone lithium batteries, charging is divided into three stages, namely: constant current precharging, high current constant current charging and constant voltage charging. The standard for the three-stage conversion is the battery voltage. Constant current pre-charging can be regarded as a protective measure, in order to let the over-discharged lithium battery slowly recover, as a buffer for the next stage of high-current charging. When the battery voltage is higher than 3.0V, it enters high-current constant-current charging, the charging current is appropriately increased, and the size of different battery currents fluctuates from 0.1C to several C. At this stage, the standard proposed by the country is to use 0.1C current for charging (C refers to the battery capacity), and the benefits of standard charging are naturally safe and stable. But the disadvantage is that the time is too long, just like the mobile phone charging in the past usually takes five or six hours or even seven or eight hours. And fast charging is to use a current greater than 0.1C at this stage. Generally, the fast charging current is 0.2C~0.8C. In fact, this number is not high for today's technology, so fast charging is still safe. When the voltage rises to 4.2V, the charging enters the final stage of constant voltage charging. At this time, the voltage is constant and the current is getting smaller and smaller until overflowing. What are the differences between different fast charging? The common fast charging technologies currently on the market include: Qualcomm’s QC2.0, MTK’s PE, and VOOC; the core of Qualcomm’s QC2.0 technology is to reduce the charging current by increasing the charging voltage, thereby reducing the power of the charging circuit. Consumption, that is, the idea of u200bu200breducing consumption. It requires a corresponding step-down and decompression circuit on the side of the mobile phone. The biggest advantage of QC2.0 is that its technical compatibility and inheritance are very good. The external interfaces are all universal USB standards, so users don’t have to purchase the required charging cable separately. QC2.0 chargers are used to charge those without fast charging function. The mobile phone can still be charged in the usual way, which is equivalent to killing two birds with one stone. The disadvantage is that the circuit on the side of the mobile phone will generate more heat and the speed is relatively slow. The PE technology (PumpExpressPlus) launched by MediaTek this year can bypass the internal charging circuit of the mobile phone and reach the battery directly, thereby preventing the mobile phone from getting hot when charging. A number of equipment protection mechanisms are also built-in to guard against overheating of equipment and chargers. For users, the performance of Meizu MX5 can also prove that the biggest feature of MTK's PEP is to reduce the heat of the mobile phone and battery during charging. VOOC technology is characterized by adjustments to all aspects of charging and five layers of safety protection. Technically, there are two important points. One is that when the battery power of the mobile phone is low, a larger current is used to charge, the voltage gradually increases, and the current gradually decreases. It can be understood as segmented charging, and beware of long-term high current charging to make the mobile phone battery hot. The second point is the multi-line setting of the charging cable and the battery. The general charging cable is 4 or 5 pins, and the VOOC is 7 pins. Naturally, the number of battery contacts is increased to 8 to reduce the line load. Another major feature is fast charging. But its shortcomings are also very clear, because it is an enhanced hardware, it is difficult to be compatible with other Android phones, whether it is an adapter, a charging cable, a battery, or a phone-side circuit, it is its own hardware. Comparing the charging speeds of these three technologies is probably: VOOC＞PEP＞QC2.0 fast charging affect battery life? No matter how easy fast charging is, what users are most concerned about is the impact on their mobile phones, especially in terms of battery life. Does fast charging have an impact on battery life? First of all, I will conclude that the current fast charging technology has little impact on battery life. Regarding lithium batteries, in addition to normal charging and discharging at high temperatures, it is bound to be accompanied by some side reactions, such as electrolyte analysis, deposits on the electrodes, and so on. These have an impact on the battery life, the maximum capacity of the battery and the display of the battery power will be affected as a result of these side reactions. But today’s fast charging technology, whether it’s QC2.0, PEP or VOOC, the heating during charging is controlled to a relatively low range, and the impact is naturally relatively minor. Of course, if you use non-original fast charging Charging accessories are likely to cause the battery to overheat and significantly reduce battery life. The safety of the current fast charging technology can also be guaranteed. One is because the current level of fast charging is not very high as mentioned at the beginning, and the other is that the mobile phone manufacturer will develop the fast charging technology at the same time as the charger, the inside of the mobile phone and even the inside of the charger. The interior of the battery is adjusted accordingly to adapt to the larger current, and protective measures will also be set up to ensure the safety of charging, so this can be assured. Of course, the most important point is that the user needs to use the original charger and battery normally in a normal environment. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: What is the significance of recycling waste lithium iron phosphate batteries