The battery cover seal ring is usually installed between the battery shell and the cover plate, and its core function is to prevent the leakage of the medium (such as electrolyte, gas, etc.) inside and outside the battery. The structure and function of the battery cover sealing ring can be summarized as follows:
Tightness: The sealing ring of the battery cover is tightly fitted to form an effective seal to prevent electrolyte leakage and external pollutants from entering the battery.
Pressure resistance: During use, gas and pressure may be generated inside the battery, and the sealing ring needs to have good pressure resistance to ensure that it can still be effectively sealed under high pressure environment.
Temperature resistance: The battery generates heat during charging and discharging, so the sealing ring needs to maintain stable performance at a higher temperature to prevent seal failure due to temperature changes.
Chemical resistance: Sealing ring materials need to have good corrosion resistance to electrolytes and other chemicals to ensure safe use over a long period of time.