What are the functions of battery vent plug

A battery vent plug is a special valve that remains normally closed under the action of external force on the closing member. When the pressure of the medium in the equipment or pipeline rises above the specified value, it prevents the medium pressure inside the pipeline or equipment from exceeding the specified value by discharging the medium to the outside of the system.

Battery vent plugs belong to the category of automatic valves and play an important protective role in controlling pressure within specified limits, ensuring personal safety, and the safe operation of equipment. Note that safety valves must undergo pressure testing before they can be used.

The primary function of a battery vent plug is to ensure the safe operation of the battery by:

Safety Function: When the internal gas pressure generated during the use of the UPS battery reaches the pressure of the safety valve, the valve opens to release the pressure, preventing battery deformation, rupture, and other issues.

Sealing Function: When the internal pressure of the battery is lower than the closing pressure of the safety valve, the valve closes to prevent internal gas and acid mist from leaking out and to prevent air from entering the battery, which could cause adverse effects.

Ensuring Normal Internal Pressure: It helps maintain normal internal pressure in the battery, promotes oxygen recombination within the battery, and reduces water loss.

Explosion Prevention: Some safety valves are equipped with anti-acid and anti-explosion discs, such as those used in Panasonic batteries.

These features are crucial for maintaining the overall safety and reliability of batteries used in various applications.

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