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Automotive Engineering ›› 2023, Vol. 45 ›› Issue (2): 169-174.doi: 10.19562/j.chinasae.qcgc.2023.02.001

Special Issue: 新能源汽车技术-动力电池&燃料电池2023年

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Research Progress on Pulse Heating Technology of Lithium-ion Battery for Electric Vehicles

Yubo Lian,Heping Ling,Qingchan Ma,Qiang Ren,Bin He()   

  1. BYD Automobile Industry Co. ,Ltd. ,Shenzhen  518118
  • Received:2022-08-28 Revised:2022-10-13 Online:2023-02-25 Published:2023-02-21
  • Contact: Bin He E-mail:hebin_tms@foxmail.com

Abstract:

At low temperatures, the lithium-ion batteries of electric vehicles have the problems of usable capacity reduction, charging difficulty and cycle life decay, which seriously restrict the application of lithium-ion batteries. Therefore, it is very important to ensure that the lithium-ion batteries operate within the appropriate temperature range. With the advantages of fast heating rate, good temperature uniformity and simple system structure, the battery pulse heating technology is an effective method to solve the problem of low temperature application of the lithium-ion batteries. In this paper, the research progress of pulse heating technology is summarized from the three aspects of pulse heating schemes, pulse control parameters and pulse heating strategies. Firstly, the advantages and disadvantages of the existing pulse heating schemes are introduced. Secondly, the temperature rise and capacity decay characteristics of lithium-ion batteries under different pulse control parameters are summarized. Finally, the influence of different pulse heating strategies on the low-temperature performance of lithium-ion batteries is compared, and the future development direction of pulse heating technology is pointed out.

Key words: lithium-ion battery, low temperature performance, pulse heating, pulse parameters