考虑温度影响的锂电池功率状态估计

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Abstract The state-of-power (SOP) of Li-ion batteries is an important parameter for security control and energy recovery of electric vehicles.The current SOP estimation algorithm at room temperature is inaccurate, which may cause the excessive current at high or low temperature to affect the security and cycle life of the battery.Therefore, the capacity and resistance of the Li-ion battery are tested at different temperature to build the capacity-temperature model and resistance-temperature model for more accurate prediction of the Li-ion parameters.Then an algorithm with multi-parameters constrained based on extend Kalman filter (EKF) is used to estimate the SOP of the Li-ion battery at different temperatures.The method can adapt to different temperature conditions and realize high estimation accuracy.The simulation and experimental results verify the theoretical analysis.

Key words： Power Li-ion battery state-of-power (SOP) capacity-temperature model resistance-temperature model multi-parameters constrained

Received: 14 May 2015 Published: 15 July 2016

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TM912

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	Liu Xintian
	He Yao
	Zeng Guojian
	Zheng Xinxin

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Liu Xintian,He Yao,Zeng Guojian等. State-of-Power Estimation for Li-ion Battery Considering the Effect of Temperature[J]. Transactions of China Electrotechnical Society, 2016, 31(13): 155-163.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2016/V31/I13/155

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