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| Design of a power lithium battery simulator for function verification of BMS |
| College of Mechanical and Vehicle Engineering, Hunan University, Changsha, Hunan 410082, China |
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Abstract A second-order equivalent circuit model of battery was established based on Simscape module of Matlab ＆ Simulink, and the parameters were identified and verified. The design of hardware circuit and software were completed, and a new power lithium battery simulator was constructed. The simulation and test results show that the accuracy of battery model can be further improved by adding the state of charge interval between 0 and 0.10 when the battery model is parameterized. Under HPPC cyclic discharge condition, the maximum error of voltage does not exceed 0.07 V, while under dynamic operation conditions, it does not exceed 0.12 V. The maximum error of output voltage of power lithium battery simulator is 1.9 mV, and the relative error is 0.53‰ under different charge state. The designed power lithium battery simulator has high accuracy and can be used for battery management system function verification.
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Received: 22 February 2019
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ZHU Hao-1, 2 , DU Yong-Zhi-1, 2 , WEN Ming-1, 2 , YIN Hui-Chun-1, 2 , ZHAO Dan-3. Positioning analysis and improvement of communication failure in electric vehicle battery management system[J]. Journal of JIangsu University(Natural Science Eidt, 2019, 40(1): 56-61. |
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2020, Vol. 41 
