1. The lithium-ion battery and the charger do not match

This is the most common. Most families have one or more electric cars, and many families have electric cars of different brands. Naturally, the chargers for lithium-ion batteries are also different. However, during use, it will often be Mixed-use, such mismatched chargers will cause the power to move heat when the battery is charging, so it will become hot and hot. In this regard, it is recommended not to use other brands of chargers easily. Only use your own.

2. Heat caused by charger problem

General chargers have no pulse function, not a negative pulse depolarization function. Such chargers usually cannot maintain a constant voltage in the later stage of charging, so the voltage of the lithium-ion battery exceeds the allowable value, resulting in a large amount of gas evolution, water loss, and heat generation in the battery. . When the battery has a small amount of heat, it is a normal heart. If the heat is abnormal, it is a charger cause when the battery performance is good.

3. One of the batteries has a short circuit

You can use a multimeter to measure the voltage of each lithium-ion battery. If you find that the voltage is very low, it is a short circuit. It's time for a new battery. There were signs of the battery being scrapped before. For example, the battery did not heat up when it was charged. After using it for about a year (sometimes even shorter), it was found that the battery was heating up. You can feel it) However, most users think strange but don't care too much because the feeling does not hinder the riding, and most of the above happen suddenly on a summer day.

How to choose the right lithium-ion battery charger for electric vehicles?

1. First, determine the battery voltage of your electric vehicle

If your electric vehicle battery voltage is 48V, the output voltage of the corresponding lithium-ion battery charger is generally about 59V; if it is a 60V battery, the connected charger output voltage is generally 73.5V. When choosing a charger, the input voltage must be 220 volts, but the charger's output voltage must be matched according to your battery, which must be accurately grasped.