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The lithium battery safety valve is a safety device used in lithium-ion batteries. Its main function is to release excess internal gas when an abnormality is sensed inside the lithium battery, reduce the pressure inside the battery, and prevent the battery from overheating. to the point of explosion.
The structure of the lithium battery safety valve is not complicated and mainly includes a valve body, spring, valve cover and sealing gasket. Under normal operating conditions, charges are transferred inside the battery through ions in the electrolyte, generating current. Some heat and gas may be generated during this process, but under normal circumstances this heat and gas will not cause problems.
However, when there are some abnormal conditions such as overcharging, over-discharging, external damage, etc., the pressure inside the battery may increase and excessive gases will be produced. If these gases are not released, they may cause the battery to explode. , when we use a lithium battery safety valve and the internal pressure of the battery rises to a preset safety level, the spring in the safety valve is pressurized, which will push the valve cover to open. After the valve cover is opened, the gas inside the battery will be released to the external environment through the passage, thereby reducing the pressure inside the battery.
This process of releasing gas protects the battery and prevents the risk of overheating, leakage or explosion. Once the pressure returns to normal, the spring causes the valve cover to close again, ensuring the valve body is sealed.
The existence of lithium battery safety valve can prevent dangerous consequences caused by battery overload or various abnormal conditions, and its existence is very necessary.
