BS&B · Rupture Disks
Ritec partnerBS&B eVent battery pack and cell vents
Low-pressure relief devices that protect lithium battery cells and packs against runaway thermal events: eVent LPS, eVent HL, eVent G and ORB/OFA, 20 mbar to 138 bar.
A lithium cell in thermal runaway produces gas fast. If the pressure inside the cell or the pack casing cannot escape in a controlled way, the casing fails where it is weakest. BS&B has supplied millions of battery vents that give that gas a defined, repeatable path out, at a pressure the housing can tolerate.
The range covers four technologies so the vent can be matched to the housing and the required burst pressure: the metal reverse buckling eVent LPS, the very low pressure eVent HL with a fluoropolymer membrane, the graphite eVent G for larger openings at low pressure and the oblong metal ORB / OFA for compact, higher-pressure cell vents. Interfaces include threaded, clamped, bolted, snap-fit, quarter-turn and adhesive mounting, and BS&B supports low, medium and high volume manufacturing.
Selection data we need
Cell or pack housing material and available mounting area, required burst pressure and tolerance, gas volume and release rate, environmental conditions, expected volumes and the qualification standards to be met.
Applications
- EV and e-mobility battery packs
- Stationary energy storage systems
- Battery cell housings
- Battery test chambers and transport containers
