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The damage to the battery varies with the degree of heating of the battery. As long as the battery works, it will heat up. That is because the chemical substances inside the battery are active and react to release energy during the discharge process. However, if the battery discharges too fast, it may be that the battery capacity is small and the discharge current exceeds 0.5C for a long time. It is emphasized here that although the battery consumes a certain amount of power after a short drive, after it is stationary, the battery has a recovery process, and the electrochemical process of the electrode plate continues, so the voltage will rise, but it does not mean that the capacity will rise; On the contrary, when driving for a long distance without stopping on the road, the electrification of the electrode plate and the consumption of electric energy are carried out at the same time.

The batteries of traditional automobiles and new energy vehicles are divided into lead-acid batteries, nickel metal batteries, lithium ion and lithium polymer batteries, high temperature sodium batteries, metal air batteries, super capacitors, flywheel batteries, solar cells and graphene batteries, etc. There are two kinds of starting power supply and power supply. So far, electric vehicles are still inseparable from lead-acid batteries.