Common faults and causes of electric vehicle chargers

Electric vehicle chargers are the basic configuration of electric vehicles. Due to the user's carelessness, or lack of attention, etc., the charger has become the most frequently purchased accessory. What are the common faults when charging the charger? What are the reasons? The author tells you! 　　 The red light does not turn on or only the green light when charging. 　　 1. The output fuse in the charger is open.　　2. The output line of the charger is broken.　　3. The line from the charging socket on the battery box to the battery is blocked or the charging plug and the socket are not bright. It can also be an open circuit of the battery pack connection line or a blown fuse in the box.　　4. Severe sulfation of the battery plates causes the battery pack to fail and cannot be charged.　　 5. The red light-emitting tube of the charger is damaged.　　The charging time is short 　　1. The capacity of the battery pack itself is reduced and its performance deteriorates.　　 2. There is a battery in the battery pack whose capacity is significantly reduced or the voltage is too high.　　3. The charger's temperature rises too high due to a fan failure, but the protection circuit works, causing the charger to stop charging early.　　 The red light cannot turn to green when charging. 1. The battery pack itself is faulty. If a grid drop occurs, the voltage of the battery pack is too low, and the battery heats up abnormally during charging and cannot be switched.　　2. After the battery has been used for a certain period of time, due to the serious lack of water inside the battery, the battery cannot be turned normally, the battery is abnormally heated, and may even be inflated.　　3. The ambient temperature during charging is too high, which will increase the leakage current in the battery pack, and the inability to reduce the final current will also cause abnormal transitions.　　4. The battery and the charger are not matched, which causes the battery to be overcharged or undercharged for a long time, and finally causes the battery to lose water and the charger does not turn on the light when charging.　　 5. The charger current is too small and the charging time is long. The battery cannot be fully charged within the expected time, causing the charger to not turn on the light.　　The indicator light is not on 　　The charger is damaged or the indicator light is damaged. Previous: What should I pay attention to when using an electric vehicle charger?