Can a Swollen Electric Vehicle Battery Still Be Used? What Are the Hazards?

[DiRyder]

Electric vehicle batteries that have swollen should not continue to be used. This is because a swollen battery's charging capacity is significantly reduced, and it also poses certain dangers. A swollen battery can continue to generate high temperatures, which may cause flammable materials or wires to melt, and in the most severe cases, lead to battery explosion. Below are the main reasons for battery swelling: 1. Charger: The charger's parameters do not match the battery's required specifications. This could be due to an initial mismatch or parameter drift caused during usage. 2. Battery: Mainly caused by sulfation, which results from factors such as high-current discharge, failure to charge in time, deep discharge, frequent discharge, insufficient charging time, or issues with the charger itself. 3. Safety Valve: Every electric vehicle battery has a safety valve. When the internal pressure of the battery rises, the safety valve automatically opens to release pressure, ensuring normal battery operation. However, if the battery's pressure increases and the safety valve fails to open, swelling can occur.