A Thermal Runaway Simulation on a Lithium Titanate Battery and the Battery Module

Man Chen, Qiujuan Sun, Yongqi Li, Ke Wu, Bangjin Liu, Peng Peng and Qingsong Wang
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Man Chen: China Southern Power Grid Power Generation Company, Guangzhou 511400, China
Qiujuan Sun: State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, China
Yongqi Li: China Southern Power Grid Power Generation Company, Guangzhou 511400, China
Ke Wu: China Southern Power Grid Power Generation Company, Guangzhou 511400, China
Bangjin Liu: China Southern Power Grid Power Generation Company, Guangzhou 511400, China
Peng Peng: China Southern Power Grid Power Generation Company, Guangzhou 511400, China
Qingsong Wang: State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, China

Energies, 2015, vol. 8, issue 1, 1-11

Abstract: Based on the electrochemical and thermal model, a coupled electro-thermal runaway model was developed and implemented using finite element methods. The thermal decomposition reactions when the battery temperature exceeds the material decomposition temperature were embedded into the model. The temperature variations of a lithium titanate battery during a series of charge-discharge cycles under different current rates were simulated. The results of temperature and heat generation rate demonstrate that the greater the current, the faster the battery temperature is rising. Furthermore, the thermal influence of the overheated cell on surrounding batteries in the module was simulated, and the variation of temperature and heat generation during thermal runaway was obtained. It was found that the overheated cell can induce thermal runaway in other adjacent cells within 3 mm distance in the battery module if the accumulated heat is not dissipated rapidly.

Keywords: lithium titanate battery; electro-thermal model; finite element method; thermal runaway (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2015
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (6)

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