Charging methods and precautions of lithium-ion batteries for electric vehicles

How to charge lithium-ion batteries in electric vehicles When we use electric vehicles, we all know how to charge batteries, but do we really know how to charge? What should we pay attention to when using? Let us list some things for you. 1. When the battery is found to be less than 30%, it should be charged in time. Long-term deep discharge or too light discharge will affect the performance of the battery. After 70% of the battery is used up, it is best to recharge it. 2. It is best to charge the battery in a cool, ventilated and dry place. Direct sunlight or rain will adversely affect the performance of the battery and charger. When charging, keep the battery and charger away from other heat sources. 3. After the battery is used up, it should be charged in time. The green indicator of the charger indicates that it is charged. The battery performance will be affected if the battery is not fully charged for a long time or the battery is not fully charged. After the green light is on for 3 hours, the battery performance is better. 4. Connect the battery terminal before charging, and then plug in the power source. After charging, first unplug the power supply, and then put it in the battery terminal. If you do not follow the above steps, it will cause lighting when connected to the end of the battery. May cause hydrogen explosion in the power box. In addition, the charger must be disconnected from the power supply after charging. I believe everyone has seen the above charging methods for lithium-ion batteries in electric vehicles. I hope you can check the details of all aspects. Only in this way can our lithium-ion batteries be used for a long time. Lithium-ion battery is a high-quality, high-safety product. Consumers often don’t understand the performance of the battery. As a result, the efficiency of the battery is often not up to the ideal goal. The following introduces its self-discharge and internal pressure detection methods. . The self-discharge test of electric bicycle lithium-ion battery is as follows: Generally, 24-hour self-discharge is used to quickly test its power storage capacity, and the battery is set to 0. Discharge to 3℃, constant current, constant voltage, 1C, charge to 4℃. 2V, cut-off current: 10mA, let stand for 15 minutes, then discharge to 3 at 1C. Measure the discharge capacity C1 at 0V and recharge the battery to 4 at constant current and voltage 1C. 2V, cut-off current 100mA, reserve 24 hours, measure 1C capacity C2, C2/C1×100% should be greater than 99%. The internal pressure test of the electric bicycle lithium-ion battery is as follows: simulate the battery at a height of 15,240 meters, check whether the battery leaks or drums. Charge the battery from 1C to 4.2V at a constant current and constant voltage, with a cut-off current of 10mA, and then store it in a low-pressure box at a pressure of 11.6kpa and a temperature (20±3°C) for 6 hours. The battery will not explode, catch fire, rupture or leak. The performance test of electric bicycle lithium-ion battery mainly includes voltage, internal resistance, capacity, internal pressure, self-discharge rate, cycle life, sealing performance, safety performance, storage performance, appearance and so on. For the maintenance of lithium-ion batteries for electric bicycles, you can consult us at any time. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.