Lithium Ion Battery Venting Design for EV Safety

1. Cylindrical cell cap seal failure during overpressureStructural Containment & Housing212 documents (17%)
2. Internal gas accumulation causing prismatic cell deformationStructural Containment & Housing184 documents (15%)
3. Catastrophic thermal runaway gas pressure buildupMechanical Venting & Pressure Relief131 documents (11%)
4. Internal pressure buildup during thermal runaway eventsStructural Containment & Housing125 documents (10%)
5. Uncontrolled gas release during thermal runawayMechanical Venting & Pressure Relief106 documents (9%)
6. Pouch cell seal failure during internal overpressureMechanical Venting & Pressure Relief77 documents (6%)
7. External gas discharge routing for passenger safetyMechanical Venting & Pressure Relief69 documents (6%)
8. Cascading thermal runaway in large scale energy storageStructural Containment & Housing45 documents (4%)
9. Excessive heat accumulation within battery cell compartmentsStructural Containment & Housing42 documents (3%)
10. Cascading thermal event propagation between cellsMechanical Venting & Pressure Relief41 documents (3%)
11. Burst pressure inconsistency from multi-step stampingMechanical Venting & Pressure Relief28 documents (2%)
12. Inefficient integration of injection ports with ventsMechanical Venting & Pressure Relief27 documents (2%)
13. Mechanical stress from battery cell swellingMechanical Venting & Pressure Relief13 documents (1%)
14. Catastrophic failure from thermal runaway gas accumulationMechanical Venting & Pressure Relief9 documents (1%)
15. Contamination of venting holes from external dustMechanical Venting & Pressure Relief8 documents (1%)

Largest 15 of 67 problems