Why does the electric vehicle get hot during charging?

When charging an electric vehicle, it is common for the li ion smart charger to heat up slightly. It's normal if the temperature is not too high.

Another situation is that the battery heats up during charging, that is, the electrical energy is converted into heat energy. If the heating temperature is relatively high, it is very dangerous.

Generally, the following conditions will cause the electric vehicle to heat up when charging:

1. Use the wrong and mismatched lithium ion smart charger, resulting in excessive charging current. For example, using a 60v lithium ion battery charger to charge a 48V battery will cause the battery to heat up. For safe and efficient charging, we must select the correct and matching charger.

2. The battery is not used for a long time, the battery is "starved". That is to say, there has vulcanization on the battery plate, it can not be charged. Even if the electric car is not in use, make sure to charge it once a month.

3. The lack of electrolyte or the aging and damage of the battery will also lead to an increase in the charging resistance, which will cause heat generation, so it should be repaired, inspected or replaced in time. Generally, lead-acid batteries have a one-year warranty, and their lifespan is 1 to 2 years.

4. The battery is short-circuited due to unexpected vibration, which leads to excessive current and causes heat. It needs to be detected in time. The whole pack or a single one with the same specifications and performance can be replaced.

The above are several common reasons that lead to heating of electric vehicles when charging. We should pay attention to the maintenance and use of batteries. Choosing high-quality batteries and best li ion chargers protects the environment as well as our own travel safety.