华南理工大学学报(自然科学版) ›› 2018, Vol. 46 ›› Issue (4): 1-7.doi: 10.3969/j.issn.1000-565X.2018.04.001

• 交通运输工程 •    下一篇

基于形态与性能的动力电池循环寿命预测方法

李礼夫 张东羽   

  1. 华南理工大学 机械与汽车工程学院,广东 广州 510640
  • 收稿日期:2017-08-18 修回日期:2017-12-20 出版日期:2018-04-25 发布日期:2018-03-01
  • 通信作者: 李礼夫( 1955) ,男,教授,博士,主要从事光机电一体化研究 E-mail:pmlfli@scut.edu.cn
  • 作者简介:李礼夫( 1955) ,男,教授,博士,主要从事光机电一体化研究
  • 基金资助:
    广东省公益研究与能力建设专项资金资助项目( 2014B010106004)

Cycle Life Prediction Method of Lithium Batteries Based on Morphology and Properties
 

 LI Lifu ZHANG Dongyu    

  1.  School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China
  • Received:2017-08-18 Revised:2017-12-20 Online:2018-04-25 Published:2018-03-01
  • Contact: 李礼夫( 1955) ,男,教授,博士,主要从事光机电一体化研究 E-mail:pmlfli@scut.edu.cn
  • About author:李礼夫( 1955) ,男,教授,博士,主要从事光机电一体化研究
  • Supported by:
     Supported by the Special Funds for Public Welfare Research and Capacity Building of Guangdong Province ( 2014B010106004) 

摘要: 常用的锂动力电池循环寿命预测模型由于忽略了电化学反应引起的结构变化而 导致锂动力电池寿命预测出现错误. 为此,以磷酸铁锂动力电池为对象,研究了锂动力电 池内部结构形态与锂动力电池循环寿命之间的关系,提出了基于形态与性能的动力电池 循环寿命预测方法,建立了基于形态与性能的动力电池循环寿命预测模型( BLPC 模型) , 研发了对应的动力电池循环寿命检测系统( BLPC 系统) ,并以此对磷酸铁锂电池进行了 循环寿命实验和 BLPC 模型的验证分析. 结果表明,与常用的电池循环寿命预测方法相 比,该预测方法具有可行与实用的特点. 

关键词: 锂离子电池, 循环寿命, 预测, 层析成像 

Abstract: The conventional prediction model for cycle life of lithium power batteries may generate prediction error, because it ignores the impact of the structural changes caused by electrochemical reactions. To solve this problem, the lithium iron phosphate batteries are regarded as the research objects for the study of the relationship between the internal structure and the cycle life of lithium power battery. The prediction method based on morphology and electrochemical properties is proposed. And a prediction model for cycle life of power battery ( BLPC model) is established on the basis of the morphology and electrochemical properties. The corresponding power battery cycle life test system ( BLPC system) is designed to carry out the cycle life experiment of the lithium iron phosphate batteries and verify the validity of BLPC model. The experimental results show that the new prediction method is more reliable and practical than those conventional ones. 

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