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《Chinese Journal of Power Sources》 2004-10
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Research on the model and estimated strategy of SOC for drain battery of electric vehicle

GONG Xue-geng 1 ,QI Bo-jin 1 ,LIU You-bing 1 ,YANG Qing-xin 2 ,Lu Zong-li 2 (1.Beijing University of Aeronautics and Astronautics,Beijing100083,China 2.Tianjin Institute of Power Souces,Tianjin300381, China)  
The paper mainly described how to estimate the state of battery charge(SOC) on electric vehicle.Having deeply researched the main effective factors such as open-circuit voltage,self-resume effect,temperature,charge and discharge efficiency, circle life, the paper established a kind of new mathematics model and introduced a kind of combining estimated strategy. The combining estimated strategy choosed the optimal method in a few of means such as Open-circuit Voltage Estimation and Ah integral Estimation according to the state of battery. The combination of several estimated strategies avoided the disadvantages of single strategy and benefited to estimated precision.It was applied to electric vehicle successfully, and the estimated error of SOC was less than 4%.
【CateGory Index】: TM912
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