1. Check the power supply and load: Confirm whether the power supply connected to the charger is stable and whether the voltage and current meet the requirements of the charger. At the same time, check whether the battery system of the new energy vehicle is in a normal charging state to avoid overheating caused by overload.
2. Check the contact between the plug and the socket: Confirm whether the contact between the charger plug and the charging socket is tight, free of looseness or impurities. Poor contact can increase resistance, thereby generating more heat. Regularly clean sockets and plugs to ensure their surfaces are clean and free of foreign objects.
3. Replace or repair the charger: If the above checks are normal, but the plug continues to heat up, it may be due to aging, damage, or design defects in the internal components of the charger. At this point, the charger should be stopped from use and professional maintenance personnel should be contacted for inspection or replacement to avoid safety hazards.