Abstract
In recent years, the number of new energy vehicles in China has continued to increase. Since 2018, the increment of new energy vehicles has exceeded 1 million for three consecutive years [1]. By the end of 2020, the number of motor vehicles in China has reached 372 million, including 4.92 million new energy vehicles and 4 million pure electric vehicles. It can be seen that Chinese new energy vehicles, especially pure electric vehicles, are growing at a high speed. However, it accounts for only about 1% of the total stock [2]. At present, one of the most important factors limiting the development of electric vehicles is the poor charging experience, the main performance is the long charging time. In order to solve the problem of long charging time, various enterprises have put forward their own solutions. At present, DC high-power super charging and power exchange are the main methods. This paper analyzes the advantages, disadvantages and safety of the two ways of rapid energy supplement, and looks forward to the follow-up development.
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