Is fast charging harmful to lithium batteries?

Is fast charging harmful to lithium batteries? Fast charging lithium batteries refer to batteries that are charged in a short period of time. Under normal circumstances, the battery can be fully charged within 6 minutes, and the charging capacity can reach more than 95% of the additional capacity. Lithium battery fast charging is a relatively common concept. There are actually two kinds of fast charging technologies in the true sense: one is flash charging technology, and the other is qualcommQuickCharge2.0 technology. It has three different implementation methods: (1) Constant voltage forward current; (2) The current remains unchanged, and the voltage rises; (3) The voltage and current are increased. Whether the lithium battery can be charged quickly depends on the test data of the lithium battery manufacturer. Not all lithium batteries can be charged quickly, otherwise the life of the lithium battery will be greatly reduced, and there will be risks such as fire and explosion. Therefore, according to the characteristics of lithium batteries, each manufacturer configures a slow charging port and a fast charging port. The charging process is managed by BMSbodysystemi. As long as the manufacturer wants to charge, it is safe. Some people say that charging a lithium battery is like pouring beer. The speed is fast, and the speed of pouring beer is also fast, but there is a lot of foam. Pour slowly, pour slowly, but a lot of beer, very real. Fast charging saves charging time, but it can also cause great damage to the battery itself. Take lithium iron phosphate batteries and ternary lithium batteries as examples. Lithium iron phosphate battery has the advantage of high temperature resistance, and the temperature rise caused by fast charging has little effect on it. The essence of rapid charging and discharging of lithium batteries is that lithium ions can quickly detonate between the positive electrode and the negative electrode. The characteristics of battery data, process design and charging and discharging system all affect the high-current charging function. Fast charging will input a large current into the battery in an instant, and the fast charging mode tends to reduce the battery's recovery ability and reduce the number of cycles of battery charging and discharging. Practice has proved that fast charging is the most harmful to lithium batteries. The principle of fast charging is to add voltage first, and then add current. In this way, fast charging also applies to this principle, so many current memory boards will have ultra-fast reactions. This kind of reaction will cause a lot of heat, because of the internal resistance and the value exceeding the bound temperature, which damages or prematurely ages the lithium battery. Fast charging only adds the input current within the allowable range, so there should be no harm from this point, but it is more serious than the slow charging lithium battery heating. Severe battery heating may accelerate the aging, and experience the slow speed of the small version of the application. Charging is longer than fast charging. Slow charging is charging by plugging into a 220v AC power outlet at home, because the battery cannot accept AC charging, so slow charging is to convert 220v AC to DC and increase the battery charging voltage by 500v DC, etc., and then use this 500v DC rechargeable battery. Briefly speaking, the quality requirements of fast-charging lithium batteries are very high, and the conditions for the serious response of the battery's large current are too harsh, and there is a greater loss to the balance state and the battery life, and the safety factor will be greatly reduced, so don't do as much as possible small. Abstract: The principle of lithium batteries tells people that lithium batteries cannot be charged quickly. The charging current of lithium batteries is generally set between 0.2c and 1C. The greater the current, the faster the charging. The fast charging technology of lithium batteries has not really been broken! Statement: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous post: Which is safer, hydrogen fuel power battery or ternary lithium battery?