Are Lithium Ion Cells Intrinsically Safe?

作者：Dubaniewicz Thomas H Jr^*; DuCarme Joseph P

来源：IEEE Transactions on Industry Applications, 2013, 49(6): 2451-2460.

DOI：10.1109/TIA.2013.2263274

• Batteries
• electrical accidents
• explosion protection
• fires
• hazardous areas
• ignition
• mining industry
• occupational safety
• standardization

National Institute for Occupational Safety and Health researchers are studying the potential for Li-ion-battery thermal runaway from an internal short circuit in equipment approved as permissible for use in underground coal mines. Researchers used a plastic wedge to induce internal short circuits for thermal runaway susceptibility evaluation purposes, which proved to be a more severe test than the flat plate method for selected Li-ion cells. Researchers conducted cell crush tests within a 20-L chamber filled with 6.5% CH4-air to simulate the mining hazard. Results indicate that LG Chem ICR18650S2 LiCoO2 cells pose a CH4 explosion hazard from a cell internal short circuit. Under specified test conditions, A123 Systems 26650 LiFePO4 cells were safer than the LG Chem ICR18650S2 LiCoO2 cells at a conservative statistical significance level.

• 出版日期2013-12