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Alternative TitleIntelligent lithium ion battery management system for electric vehicle and balance control method thereof
袁学庆; 刘利; 任河; 李博; 马军贤
Rights Holder中国科学院沈阳自动化研究所
Patent Agent沈阳科苑专利商标代理有限公司 21002
Other Abstract

The invention relates to an intelligent lithium ion battery management system for an electric vehicle. The management system is characterized in that a microcontroller module is connected with a power supply module, a data detection module, a charge-discharge control module, a safety protection module, a communication module, a data storage module and a balance management module. The balance control method comprises the following steps: carrying out balance self-inspection according to each collected single cell voltage data in a cell unit; if the balance self-inspection is successful, judging whether to start balance control; if the difference between the single cell voltage and the average value voltage is larger than a preset threshold voltage and the voltage of a certain single cell is larger than a preset threshold, carrying out balance control with PWM duty ratio obtained based on the single cell voltage being as balance time; or otherwise, giving up carrying out the balance control. The management system in the invention is a centralized battery management system, and has the advantages of small size, stable performance, high detection precision, low cost and high reliability and the like.

PCT Attributes
Application Date2013-03-13
Date Available2016-06-15
Application NumberCN201310079307.0
Open (Notice) NumberCN104052087A
Contribution Rank1
Document Type专利
Recommended Citation
GB/T 7714
袁学庆,刘利,任河,等. 电动车用智能锂离子电池管理系统及其均衡控制方法[P]. 2014-09-17.
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