How does the safety valve function differently during battery charging and discharging?

During the battery charging and discharging process, the safety valve plays a key role, but its function is different.

One of the primary responsibilities of a safety valve during charging is to monitor and prevent overpressure conditions. During charging, abnormal current or voltage fluctuations may cause the internal pressure of the battery to rise, and the safety valve will open to release excess gas to maintain the internal pressure within a safe range. At the same time, the safety valve is also responsible for monitoring and responding to excessive temperatures. Once an abnormal temperature rise is detected, the valve will be quickly activated to release the gas generated internally to reduce the battery temperature. Gas release is also one of its functions, releasing gas when needed to avoid excessive accumulation of internal gas.

During the discharge process, the safety valve is also responsible for monitoring the internal pressure and temperature. Excessive discharge current or voltage fluctuation may cause the internal pressure to rise. The safety valve will open in time to release the gas to prevent the battery from being dangerous due to overvoltage. In addition, it will also monitor temperature changes during the discharge process. Once the temperature rises abnormally, the safety valve will quickly activate and release gas to reduce the battery temperature. Gas release is also its important function during discharge, ensuring that internal gas does not accumulate excessively.