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Analysis of Influencing Factors of Thermal Management System for LiFePO4 Lithium Battery under High Power Charging

State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China
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World Electr. Veh. J. 2020, 11(2), 44; https://doi.org/10.3390/wevj11020044
Received: 15 April 2020 / Revised: 12 May 2020 / Accepted: 26 May 2020 / Published: 4 June 2020
(This article belongs to the Special Issue Fast Charging System for Electric Vehicles)
During the high-power charging process, the heat generated by the power battery is significantly increased, resulting in a significant temperature rise, which will bring safety hazards and worsens capacity degradation. In this study, we focus on the energy storage system composed of LiFePO4 pouch battery cells whose capacity is 30Ah. The coupling calculation between the one-dimensional electro-chemical model and the 3D heat generation model is realized. The accuracy of the model is verified by charging the battery at different rates. The results show that the inlet flow rate and the cooling channel size within a certain range has a great influence on the cooling effect of the battery pack during high power charging process. Comparing the temperature distribution of the battery pack under different charging rates, the electrochemical-heating coupling model established in this study can truly reflect the heat generation of the battery. Through the calculation of the heat generation of the battery pack, the boundary conditions of the cooling system design can be found, which provides a basis for the optimal design of the conditional cooling system for battery high-power charging. View Full-Text
Keywords: high-rate charging; air-cooling; liquid cooling; lithium-ion battery; thermal management system high-rate charging; air-cooling; liquid cooling; lithium-ion battery; thermal management system
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MDPI and ACS Style

Du, J.; Sun, Y.; Huang, Y.; Wu, X. Analysis of Influencing Factors of Thermal Management System for LiFePO4 Lithium Battery under High Power Charging. World Electr. Veh. J. 2020, 11, 44. https://doi.org/10.3390/wevj11020044

AMA Style

Du J, Sun Y, Huang Y, Wu X. Analysis of Influencing Factors of Thermal Management System for LiFePO4 Lithium Battery under High Power Charging. World Electric Vehicle Journal. 2020; 11(2):44. https://doi.org/10.3390/wevj11020044

Chicago/Turabian Style

Du, Jiuyu, Yizhao Sun, Yingxuan Huang, and Xiaogang Wu. 2020. "Analysis of Influencing Factors of Thermal Management System for LiFePO4 Lithium Battery under High Power Charging" World Electric Vehicle Journal 11, no. 2: 44. https://doi.org/10.3390/wevj11020044

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