To improve battery performance,it is critical to investigate specifying advanced charging strategies.Based on the differential evolution algorithm,a multi-stage constant current charging strategy considering battery life and charging efficiency is proposed.Firstly,combining the external characteristics and internal mechanism of lithium-ion batteries,the coupling model of electrical,thermal and life is established.Secondly,according to the above coupled model parameters,the optimization equation aiming at the service life and charging speed is further constructed.Finally,the differential evolution algorithm is used to determine the optimal charging current in each constant current segment.Developing a safe and fast charging strategy that meets consumer needs is not only conducive to the promotion and popularization of electric vehicles,but also contributes to the long-term sustainable development of the country.
关键词
锂离子电池/多级恒流充电/耦合模型/进化算法/优化方程
Key words
lithium-ion battery/multistage constant current charging/coupling model/evolutionary algorithms/optimization equation
维普
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