Why does the lithium battery charger for electric vehicles charge and generate heat?

What is the reason for the heating of the electric vehicle lithium battery charger? Sometimes the electric vehicle lithium battery charger will generate abnormal heat during charging or use, which may reduce the battery capacity and shorten the battery life. The reasons for the heating of lithium batteries in electric vehicles include poor chargers and quality problems. If this happens, we must treat it with caution. 1. Lithium battery and charger do not match this is the most common. Most families will have one or more electric vehicles, and many families have different brands of electric vehicles, so lithium battery chargers are naturally different. However, in the process of use, it will often be used in combination, so that the unmatched charger will cause the battery to move the heat of the power supply when the battery is charging, so it will become hot and hot. For this, it is recommended not to use other brands of chargers easily. my own. 2. Heat caused by charger problems. General chargers have no pulse function, and no negative pulse elimination function. This type of charger usually cannot maintain a constant voltage in the later stage of charging, which will cause the voltage of the lithium battery to exceed the allowable value, resulting in a large number of batteries. Outgassing, water loss, heat generation. When the battery has a small amount of heat, it is normal heat. If the heat is abnormal, it is the cause of the charger if the battery performance is good. 3. If one of the batteries has a short circuit, you can use a multimeter to measure the voltage of each lithium battery. If you find that there is a very low voltage, it is a short circuit. It's time to replace the battery. In fact, there are signs that the battery is scrapped before. For example, the battery did not heat up when it was charged. It was found that the battery was heating up after using it for about a year (some or even shorter time). (Touch the battery shell by hand You can feel it) However, although most users feel weird, they don't care too much, because they don't feel that it hinders riding. Most of the above situations happen suddenly on a summer day. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.