上海交通大学学报

上海交通大学学报（自然版） ›› 2015, Vol. 49 ›› Issue (04): 487-493.

• 交通运输 • 上一篇    下一篇

基于热模型的动力电池热故障诊断系统

刘鹏1，朱建新1，储爱华2，周兴叶2   

  1. （1.上海交通大学 汽车电子技术研究所，上海 200240； 2.浙江吉利罗佑发动机有限公司，浙江 宁波 315000）
  • 收稿日期:2014-08-11 出版日期:2015-04-28 发布日期:2015-04-28
  • 基金资助:

    国家自然科学基金资助项目（51275355）,国家高技术研究发展计划（863）项目(2011AA11A207)

Power Battery Thermal Faults Diagnostic System Based on Thermal Model

LIU Peng1,ZHU Jianxin1,CHU Aihua2,ZHOU Xingye2   

  1. （1. Institute of Automotive Electronic Technology, Shanghai Jiaotong University, Shanghai  200240, China; 2. China Zhejiang Geely Royal Engine Co., Ltd., Ningbo 315000, Zhejiang, China）
  • Received:2014-08-11 Online:2015-04-28 Published:2015-04-28

摘要：

摘要：  为提高车载动力电池热管理系统的可靠性，使电池温度维持在合理的范围内，根据镍氢电池的结构及传热学原理，建立了电池的热模型，实现了电池内部及表面温度的在线预测.通过模型预测温度与实际温度的对比，对电池温度异常状况进行在线诊断，并将诊断信息通过控制器局域网(CAN)通信传送给整车控制器，使整车及时对故障做出响应.试验结果表明,该系统能准确及时地诊断风机故障、电池剩余容量(SOC)过高及电池过充故障，有效避免了因热故障引起的电池过温.

关键词: 混合动力汽车, 镍氢电池, 热故障, 热模型

Abstract:

Abstract： To improve the performance of battery thermal management system, a battery thermal model was built based on the analysis of battery structure and the thermal conductive theory. With the help of this model, the internal and surface temperatures of the battery were predicted online. By comparison of predicted and measured temperatures, the thermal faults were diagnosed. The battery management system transmits diagnostic information to the whole car control unit to make the car react in time. The experimental results indicate that this system is able to detect the thermal faults such as fan failure and battery overcharging in time and exactly, which effectively avoids battery overheat under high temperature conditions.

Key words: hybrid electric vehicle, NiMH battery, thermal faults, thermal model

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