• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2019, Vol. 55 ›› Issue (14): 53-59.doi: 10.3901/JME.2019.14.053

• 运载工程 • 上一篇    下一篇


熊瑞, 王侃, 郭姗姗   

  1. 北京理工大学机械与车辆学院 北京 100081
  • 收稿日期:2019-03-26 修回日期:2019-06-12 出版日期:2019-07-20 发布日期:2019-07-20
  • 通讯作者: 熊瑞(通信作者),男,1985年出生,教授,博士研究生导师。主要研究方向为电动汽车动力电池系统管理与综合控制。E-mail:rxiong@bit.edu.cn
  • 作者简介:王侃,男,1994年出生,硕士研究生。主要研究方向为动力电池低温加热。E-mail:wkan1994@163.com;郭姗姗,女,1985年出生,博士研究生。主要研究方向为动力电池低温加热。E-mail:lucy001478@163.com
  • 基金资助:

Hybrid Preheating Method for Lithium-ion Battery Used in Cold Environment

XIONG Rui, WANG Kan, GUO Shanshan   

  1. School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081
  • Received:2019-03-26 Revised:2019-06-12 Online:2019-07-20 Published:2019-07-20

摘要: 锂离子动力电池低温环境下充放电性能差,充电过程可能发生析锂,甚至引发安全事故,因此,开展锂离子动力电池低温加热必要且紧迫。为实现锂离子动力电池低温快速加热,提出一种结合交流电内部加热和宽线金属膜外部加热的复合加热方法,建立动力电池的温升模型,仿真分析动力电池的温升特性,基于此,开展动力电池低温复合加热策略的验证试验。结果表明,复合加热法可以在471 s内将动力电池从-20℃加热到5℃,相较于交流电加热法加热速率提升22%、加热功耗降低23%;对单体内阻差异较大的电池组,该方法还能提升加热效果的一致性,是一种可行的动力电池系统低温加热方法。

关键词: 低温复合加热策略, 交流电加热, 宽线金属膜加热, 锂离子动力电池

Abstract: Due to the poor charge-discharge performance of lithium-ion batteries and the lithium precipitation during the charging process in cold environment, which may even result in safety accidents, it is necessary and urgent to preheat lithium-ion batteries in subzero temperature. In order to realize the low-temperature rapid heating of lithium-ion battery, a hybrid heating method combining internal heating of AC and external heating of wide-wire metal film is proposed. The temperature rise model of the battery is established to simulate the temperature rise characteristics. Therefore, the verification test of the hybrid heating strategy is carried out. The results show that the hybrid heating method can heat the battery from -20℃ to 5℃ in 471 s. Compared with the AC heating method, the heating rate is increased by 22%, and the heating power consumption is reduced by 23%. Especially for battery pack with large difference in its cell's internal resistance, the method can also improve the consistency of the heating effect, and thus is a feasible low-temperature heating method for the battery system.

Key words: AC heating, hybrid heating method, lithium-ion battery, wide-wire metal film heating