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Journal of Automotive Safety and Energy ›› 2011, Vol. 2 ›› Issue (1): 62-67.DOI: 10.3969/j.issn.1674-8484.2011.01.009

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Technologies to relief un-uniformity of power batteries used in electrical vehicles

 DAI  Hai-Feng, SUN  Ze-Chang, WEI  Xue-Zhe, WANG  Jia-Yuan   

  1. School of Automotive Studies, Tongji University, Shanghai 201804, China
  • Received:2010-12-30 Online:2011-01-15 Published:2011-06-17
  • About author:作者简介/ First author: 戴海峰/ DAI Haifeng (1981-), 男(汉), 江苏,讲师。E-mail: tongjidai@gmail.com
  • Supported by:

    基金项目/ Supported by: 教育部博士点基金项目 (20100072120026)

Abstract: The un-uniformity of power batteries used in electrical vehicles (EVs) shorten battery service life,reduce battery system performance,and limit battery packs application. To relief the growth of un-uniformity during battery application, the authors structured a battery management system (BMS) for designing single cell protection circuit,and proposed battery pack state estimation. The technologies to resolve the problem could be as a good thermal management in design stage, an efficient electric protection with cell voltage monitoring and cell balancing typically in using stage, and an appropriate cell classification in assembling stage.

Key words: electrical vehicle (EV), battery un-uniformity, thermal management, cell protection, cell classification, state estimation

CLC Number: