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A new method of the SOC estimation using the Luenberger observer technique is presented in this paper. The simulation model of the proposed SOC estimation method is modeled in Matlab/Simulink and is generated into code automatically by Matlab/RTW. Then the code is embedded into battery management system (BMS) for SOC estimation. To investigate the feasibility and reliability of the proposed approach, the constant-current constant-voltage (CC-CV) charging test and Beijing dynamic stress test (BJDST) are performed to estimate the SOC. Results show that the proposed approach can accurately estimate the SOC within 2% error, which is adaptable for engineering application.

power lithium battery of manganese oxide is for the study in this paper, including its heating mechanism. Based on heat production caused by lithium-ion battery internal resistance, the heat transfer model for the battery was built. By the computational fluid dynamics (CFD) method, cooling performance of a battery pack composed of LiMn2O4 prismatic cells was simulated. And experimental data obtained by monitoring this pack was analyzed. According to this method we can make some reasonable proposals on battery cooling system designing.I.

According to the rail traffic characteristics, this article analyses the dual power rail vehicle demand background. Combined with traction and braking characteristics of rail vehicles, this paper makes the simulation of on-board energy storage system demand and determines the requirements for energy and power of traction power system with the on-vehicle energy storage systemssupplying. According to the objective, this paper proposes two energy storage system solutions and energy management strategies, which finally be validated and contrasted by simulation. At last, some conclusions are given.