European and American consumers' concerns about new energy vehicles are mainly insufficient cruising range, insufficient number of charging piles, insufficient charging speed and battery safety hazards. The demand for charging facilities is mainly focused on: more quantity and faster charging speed. . Because DC fast charging piles have higher voltage, power and faster charging speed than AC charging piles - AC charging piles (6kW) are 10-40 miles per hour, while DC fast charging piles (50-350kW) are 100 miles per hour. -300 miles per hour, therefore, DC fast charging is an inevitable trend for charging piles, and there is considerable room for development around the world.
According to the charging method of electric vehicles, charging piles can be divided into two categories: AC charging piles and DC charging piles. AC charging piles are currently mainly used in household scenarios and are low-cost. It takes more than 8 hours to fully charge an ordinary pure electric car, commonly known as "slow charging". DC charging piles have the ability to directly charge batteries and are connected to the power grid in a three-phase four-wire system. They can provide sufficient power and have a wide range of output voltage and current adjustment. They are commonly known as "fast charging".
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