Properly designed venting systems provide protection from contaminants along with pressure equalization during normal operating conditions, helping lead to longer-lasting enclosures and battery life cycles. The venting system must also be capable of providing immediate pressure relief, in the rare case of thermal runaway, to help avoid component failure or damage to additional cells.
Donaldson's line of dual-stage vents includes the Dual-Stage Burst and Dual-Stage Flex. These vents help protect automotive battery packs and support battery life and reliability through four key functions:
- Sealing and guarding against water, dirt, contaminants and harsh automotive fluids.
- Continuous pressure equalization to help protect the battery housing against excess over- or under pressure during the life of the battery.
- Effective ventilation, allowing damp air which could accumulate inside the battery housing to be expelled with each warming-up cycle, helping to avoid potential internal condensation issues under certain atmospheric conditions.
- Help ensure proper mitigation in case of a thermal runaway event inside the battery, allowing large amounts of gases to be expelled in a short timeframe.