Different fast charge of lithium battery Lithium - Ion Battery Equipment

Different fast charge of lithium battery -Lithium - Ion Battery Equipment

The common fast charging technologies on the market today 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 line. Consumption, that is, the idea of ​​reducing consumption. It requires a corresponding step-down and decompression circuit on the mobile phone side. The biggest advantage of QC2.0 is that the technical compatibility and inheritance are very good. The external interfaces are all common USB standards, so that users do not need to buy the required charging cables separately. The phone can still be charged in ordinary ways, which is equivalent to killing two birds with one stone. The disadvantage is that the circuit on the mobile phone side will generate a lot of heat and the speed is relatively slow.

The PE technology (PumpExpressPlus) launched by MediaTek this year can bypass the charging line inside the mobile phone and go directly to the battery, thereby preventing the mobile phone from getting hot during charging. There are also built-in device protection mechanisms to prevent devices and chargers from overheating. For users, the performance of the Meizu MX5 can also prove that the biggest feature of MTK's PEP is to reduce the heat of the phone and battery during charging.(Lithium - Ion Battery Equipment)

VOOC technology, which is characterized by adjustments to all aspects of charging, and five layers of safety protection. There are two technically important points. One is that when the 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 to prevent long-term high current charging from making the mobile phone battery hot. The second point is the multi-circuit 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 contacts of the battery has also increased to 8, reducing the line load. Another major feature is the fast charging. However, its shortcomings are also obvious. Because it is a strengthened hardware, it is difficult to be compatible with other Android phones. Whether it is an adapter, a charging cable, a battery or a circuit on the mobile phone, it is its own hardware.

The charging speed of these three technologies is probably: VOOC>PEP>QC2.0

Does fast charging affect battery life?

No matter how useful 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 any impact on battery life?

First of all, put the conclusion that the current fast charging technology has little impact on battery life.

For lithium-ion batteries, in addition to normal charging and discharging, working at high temperatures must also be accompanied by some side reactions, such as electrolyte decomposition, deposits on electrodes, and so on. These have an impact on battery life, and the maximum capacity of the battery and the display of battery power will be affected as a result of these side reactions. And today's fast charging technology, whether it is QC2.0, PEP or VOOC, the heat generation during charging is controlled in a relatively low range, and the impact is naturally relatively slight. Of course, if you use non-original fast charging technology Charging accessories is likely to cause the battery to overheat and significantly reduce battery life.

The safety of the current fast charging technology can also be guaranteed. First, because the current of the fast charging mentioned at the beginning is not very high, and second, when the mobile phone manufacturer develops the fast charging technology, it will also change the internal charging of the charger, the inside of the mobile phone and even the mobile phone. The battery is adjusted accordingly to adapt to the larger current, and protection measures are also set up to ensure the safety of charging, so you can rest assured. Of course, the most important point is that the user needs to use the original charger and battery normally in a normal environment.

In general, fast charging has little impact on battery life and is very safe. You can use it with confidence and enjoy the convenience of mobile phone battery life brought by fast charging. Now mobile phone manufacturers increase the number of lithium ions separated from the positive electrode to increase the battery's storage capacity, where the positive electrode material becomes an extremely important element. Since the lithium-ion battery is easy to explode, the new material lithium-polymer battery is improved on the mobile phone.



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