Characterization on the thermal runaway of commercial 18650 lithium-ion batteries used in electric vehicle
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- 作者：Yih-Shing Duh ; Meng-Ting Tsai ; Chen-Shan Kao
- 关键词：Lithium ; ion battery ; Thermal runaway ; Confinement test ; Self ; heat rate
- 刊名：Journal of Thermal Analysis and Calorimetry
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：127
- 期：1
- 页码：983-993
- 全文大小：
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Physical Chemistry; Analytical Chemistry; Polymer Sciences; Inorganic Chemistry; Measurement Science and Instrumentation;
- 出版者：Springer Netherlands
- ISSN：1588-2926
- 卷排序：127
文摘
Panasonic 18650A and 18650B lithium-ion batteries at full-charged state are conducted to run through thermal runaway by confinement tests. Exothermic features such as onset temperature (Tonset), crucial temperature (Tcr), maximum self-heat rate (dT/dt)max, maximum temperature (Tmax) and maximum pressure (Pmax) are measured and assessed. Most of the maximum temperatures within the batteries under thermal runaway exceed both 800 °C and auto-ignition temperature of organic carbonates to ignite the flammable vapors of the electrolytes in the air. Adiabatic temperature rise is measured to be (775 ± 116) °C which equates to the enthalpy changes of (30.9 ± 4.6) kJ without adopting the correction of thermal inertia. Maximum self-heat rates are determined to be in the range from 17,610 to 27,594 °C min−1. Panasonic 18650A and 18650B lithium-ion batteries shall carry the calamitous characteristics under thermal runaway if they rise above the crucial temperature of (188.0 ± 4.4) °C. Averaged enthalpy change caused by thermal runaway of a Panasonic 18650 lithium-ion battery is comparable to the equivalence of heat released by 0.71 grams of gasoline under combustion.