Charging strategy and thermal management technology of power battery in high power charging process of electric vehicle

doi:10.19799/j.cnki.2095-4239.2021.0267

Abstract

Abstract:

Electric vehicles have become an important way to transform transportation in order to meet the "dual carbon" goal. However, because charging speed has an impact on the user experience of electric vehicles, it limits the promotion and application of electric vehicles to some extent. As a result, the development of high-power charging is a critical technical step toward increasing the penetration rate of electric vehicles. However, the accelerated aging of the power battery caused by high-power charging, as well as the inconsistency of the temperature distribution of the power battery pack caused by rapid heat generation, have introduced new challenges to the formulation of the rapid charging strategy of electric vehicles and the design of the thermal management system. The current research status of management technology for the high-power charging process of electric vehicles is summarized in this paper, based on the optimization of an electric vehicle's high-power charging strategy and the design of a battery thermal management system. The advantages and disadvantages of various charging strategies and thermal management system designs are evaluated with a focus on the impact of high-power charging methods on the performance of power batteries. On this basis, the difficulties in developing a high-power charging strategy and thermal management technology for electric vehicles are thoroughly analyzed.

Key words: electric vehicles, high-power charging, charging strategy, thermal management

CLC Number:

TM 92

Xiaogang WU, Zhihao CUI, Yizhao SUN, Kun ZHANG, Jiuyu DU. Charging strategy and thermal management technology of power battery in high power charging process of electric vehicle[J]. Energy Storage Science and Technology, 2021, 10(6): 2218-2234.

Figures/Tables 13

References 88

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