Donaldson has expanded its dual-stage battery pack vent line with the addition of the Dual-Stage Flex battery vent. The new battery vent enables pressure relief at lower pressures, helping support battery life and reliability.
EV weight can be reduced by using thinner battery pack walls, but thin walls can’t withstand higher pressures within the battery pack. The new Dual-Stage Flex battery vent was developed to address this low-pressure requirement.
Donaldson’s Dual-Stage Flex battery vent contains a one-way umbrella valve that allows for quick exhaust if pressures within the battery pack increase,allowing the internal pressure to be quickly released through a flexible valve, helping avoid potential further disruption to other battery pack cells.
The dual-stage vent now includes the Flex and Burst vent options—both provide sealing and guarding against contaminants, offer continuous pressure equalization, expel damp air and help with mitigation of gases in the case of thermal runaway.
“The Dual-Stage Flex battery vent is easy to integrate into most battery pack configurations, and is a great choice for EV manufacturers looking for a venting solution with low-opening pressure,” said engineer Shane Campbell. “Both of our Dual-Stage vents feature Donaldson’s proprietary Tetratex ePTFE filtration membrane that is engineered for maximum airflow and offers advanced ingress protection.”