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LYU Chao,GE Tengfei,CONG Wei,YU Honghai,LAI Qingzhi.Simplification and Solution of Mechanism Model for Lead-acid Battery[J].JOURNAL OF POWER SUPPLY,2018,16(2):171-177
Simplification and Solution of Mechanism Model for Lead-acid Battery
Received:March 28, 2016  Revised:September 14, 2017
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DOI:10.13234/j.issn.2095-2805.2018.2.171
Keywords:lead-acid battery  mechanism model  Galerkin method
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AuthorInstitutionEmail
LYU Chao School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin , China lu_chao@hit.edu.cn
GE Tengfei School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin , China
CONG Wei School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin , China
YU Honghai Maintenance Branch, State Grid Heilongjiang Electric Power Company, Harbin , China
LAI Qingzhi School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin , China
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Abstract:
      To estimate the charging-discharging performance and the health status of a lead-acid battery more accurately and conveniently, a simplified mechanism model was put forward. First, the electrode kinetics, open circuit potential, and solid-phase potential equilibrium were approximated based on the classical mechanism model of lead-acid battery. Then, aiming at the control equations in the simplified model, Galerkin Method was applied to solve the governing equations, and cosine function was selected as the shape function. Finally, the model was verified under different operation conditions. Experimental results showed that the model had a high simulation precision. The simplified model takes both accuracy and complexity into account, which provides a theoretical basis for the mechanism model to be applied to the online simulation and health status evaluation on the terminal voltage profiles of a battery.
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