What are the reasons for the important bulging of lithium-ion battery pack electric vehicles?

When a lithium ion battery is charged, the lead sulfate on the positive and negative plates and the water in the electrolyte are chemically reacted, so that the positive plate is reduced to lead oxide, and the negative plate is reduced to pure lead. The temperature of the lithium-ion battery pack will increase. At the same time, if a large amount of gas is released, there will be insufficient space inside the battery to store these gases, which will cause the battery to swell. Reason 2: The internal resistance of the lithium-ion battery is too high. When the internal resistance of a battery is too high, when the current is constant, the voltage will be very high (voltageu003dcurrent*resistance). What we can see is that the battery is very hot before the red light jumps during normal charging, that is, the battery has not reached the charging voltage, and the gas is gassed in advance! Reason three: The electric vehicle charger does not meet the requirements. When the parameters of the electric vehicle charger we use are higher than the rated voltage and current of our battery, it is possible to charge the lithium-ion battery pack! Intimate tips: 1: Use an electric vehicle charger that meets the requirements, and go to the lithium-ion battery repair point to do a special charger test. Many places are now tested for free. Two: Check the battery regularly and do maintenance for the lithium-ion battery pack, which can prolong the service life of the battery and increase the service life of the electric vehicle. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Why do lithium-ion battery packs need to be aging tested?