Electric vehicle battery charging heats up These four reasons you need to know!

Sometimes electric vehicle batteries will generate abnormal heat during charging or use, which may reduce battery capacity and shorten battery life. The reasons for the heating of electric vehicle batteries include poor chargers and quality problems. If this happens, we must treat it with caution. Under normal circumstances, the charging heat of the electric vehicle battery is similar, not very high, but it is not low temperature, within the normal range, will not damage the battery, but if the battery overheats and the charger does not turn on the light This phenomenon needs to be treated with caution. Professionals pointed out that there are four main reasons for the excessive heating and heating of electric vehicle batteries when charging: 　　 1. The battery and charger do not match this is the most common, most families will have one or There are multiple electric vehicles, and many families of electric vehicles are of different brands, and the battery chargers are naturally different, but in the process of use, they will often be mixed and used, so that unmatched chargers will cause the battery to be charged. The heat of the power supply is moved, so it becomes hot and hot. For this, it is recommended not to use other brands of chargers easily, and only use your 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 battery voltage to exceed the allowable value, resulting in a large amount of battery analysis. Gas, dehydration, fever. When the battery generates a small amount of heat, it is normal heat, if the heat is abnormal, it is the cause of the charger when the battery performance is good.　　3. One of the batteries is short-circuited　　 You can use a multimeter to measure the voltage of each battery. If you find that there is a very low voltage, it is short-circuited. 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.　　4. The battery's own problems　　The battery is aging, the internal resistance becomes larger, the electrolyte is dried up, and the internal short circuit is caused by the battery's own problems. With the increase in the number of times the battery is used, including discharging and charging, the water molecules in the battery are gradually lost, which causes the battery to generate heat during the electrochemical reaction; in addition, the battery solution forms sulfuric acid crystals during the charging and discharging process, and the precipitate sticks to the plate. If the battery heats up due to a short circuit, the best way is to replace the battery with a new one.　　 Therefore, when choosing batteries, try to choose high-quality, well-reputed brand batteries, such as batteries. The battery quality is very good, the service is also good, the sales, customer service, technical support, maintenance and other aspects are well established, which can provide consumers with better after-sales service.　　 In addition, you must always remember the manufacturer’s instructions during the charging process, and strictly follow it, especially when it comes to charging time, don’t think that the longer the time, the greater the capacity, and the longer the time will damage the battery or even cause a fire. Too little, frequent charging and discharging, will cause a lot of damage to the battery. Previous: How to prevent theft of electric vehicles?