Pressure Equalizing and Gas Evacuation Battery Vent Cap

As mobility is changing to electric and hybrid vehicle, Lithium-ion batteries acquired a leading role in the automotive market.

To power vehicles, rechargeable batteries are arranged in packs and do offer a high ratio of energy per unit volume.

Li-Ion Batteries do need robust protection from harsh external conditions like water, dirt, contaminants and automotive fluids, along with adequate venting to compensate different pressures between the interior of the storage unit and its environment.

To protect battery life and safety, GVS has developed specific pressure-equalizing caps with integrated safety function that protects the battery housing against exceeding over-or under pressure which might happen for example in case of a cell failure or mechanical damage.

In that case, the GVS product opens temporary a larger the cross-section for the ventilation, preventing a burst of the battery housing, allowing fast evacuation and restoring as quick as possible the controlled pressure equalization.