Heating of output wires of old lithium batteries of electric vehicles is caused by line overload, short circuit and degradation of battery performance.
1. Line overload: When the battery current is greater than the line capacity, an overload occurs, causing the lines and connectors to heat up.
2. Circuit Shorting: A hazard will occur when the positive and negative ends of the line come into contact, resulting in a short circuit. For example, the connectors should be separated, but due to aging or improper installation during modification, the circuit is shorted. It is necessary to check whether the wiring is normal and replace damaged connectors in time.
3. Battery performance degradation: When the battery is used for a long time, the capacity and performanceBattery currents will decrease after repeated charging and discharging, resulting in inconsistent chemical reactions in the battery and generating inconsistent chemical reactions in the battery. Heat and other abnormalities.
If you find that the battery or circuit of an electric vehicle is hot, you should stop using it immediately and carry out inspection to avoid causing safety accidents.