Abstract
Power battery is the key to the widespread use of pure electric vehicles. In this paper, patent mining and data analysis technology are adopted to summarize the development trend and main patentee of battery electric vehicle power battery patent technology. Combined with the patent text, the key technologies in the field of battery electric vehicle power battery in recent years are analyzed in depth. The research results show that China has entered a period of rapid technological development in the field of battery electric vehicle power battery, and its innovation subjects are mainly enterprises. The key technologies mainly focus on three aspects: battery heating, battery cooling and charging methods.
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