What is the reason why the lithium battery of electric vehicle cannot be charged?

1. Check whether the circuit connection is in good contact, whether the charger is mixed with the electric vehicle lithium battery pack for charging, check whether the socket and the charging cable are working normally, to prevent the failure of the socket and the failure of charging due to the looseness of the socket. When charging, use the charger that is suitable for the electric vehicle itself to prevent the use of chargers of other car models and models, resulting in invalid charging. 2. The battery is seriously swollen and the electric vehicle cannot be charged. You can measure the swollen battery first to check whether it can be used again. How to fix it? Open the battery box, open the closed filling hole cover on the battery (do not lose the rubber cap on the filling hole), and observe whether there is liquid. Use a syringe to draw 5 to 10 milliliters of distilled water, add it to the injection hole, and add gradually until the liquid has just spread over the electrode plate and the water level indicator on the outside is better. 3. The lithium battery pack is left for too long, resulting in the loss of power and the voltage is too low, and the charger cannot charge the electric vehicle. The lithium battery pack of electric vehicles will be greatly damaged if it is not used for a long time. Is it serious that the battery fluid inside the battery is dry. For this kind of situation, the easiest way is to try to charge it with a low-model charger first, and when the voltage comes up, replace it with the original charger. 4. There is a problem with the battery charging IC or the BMS system. The lithium battery management system has problems due to the imbalance of the battery cells, which leads to the misjudgment of the management IC and the inability to detect the voltage or current. Disclaimer: The articles published on this website are all from the Internet. If there is any infringement, please contact to delete it. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous article: Four major differences between primary and secondary batteries