1. Charging pile refers to charging equipment that provides charging service for electric vehicles. It is mainly divided into floor-mounted charging piles and wall-mounted charging piles, which mainly adopt the charging methods of timing, quantity and amount. Domestic electric vehicle charging stations are mostly limited to electric buses or internal group cars, and there is no charging station service network for different users. Typical charging stations built or under construction have the following contents. In 2006, BYD built the first electric vehicle charging station in Shenzhen at its headquarters in Shenzhen. In 2008, the first centralized charging station in China was built during the Beijing Olympic Games, which can meet the charging demand of power batteries for 50 pure electric buses. On June 5438+ 10, 2009, Shanghai Electric Power Company invested in the construction of Shanghai Caoxi electric vehicle charging station, which is the first electric vehicle charging station with commercial operation function in China. At the end of 2009, Beijing Shouke Group built the first demonstration charging station of Beijing pure electric passenger car with complete intelligent microgrid in Jianxiang Bridge.
Second, the types of charging piles (3) According to the installation method, it can be divided into floor-mounted charging piles and wall-mounted charging piles. Floor-standing charging piles are suitable for installation in parking spaces not close to walls. Wall-mounted charging piles are suitable for installation in parking spaces near walls. According to the installation location, it can be divided into public charging piles and special charging piles. Public * * * charging piles are built in public * * * parking lots (garages) combined with parking berths to provide public * * * charging services for social vehicles. The special charging pile is the parking lot (garage) owned by the construction unit (enterprise) for the use of the internal personnel of the unit (enterprise). Self-use charging pile is a charging pile built in personal parking space (garage) to provide charging for private users. Charging piles are generally used in combination with parking spaces in parking lots (garages). The protection level of charging piles installed outdoors should not be lower than IP54. The protection level of charging piles installed indoors should not be lower than IP32.
3. The scheme of the charger in the ground charging station consists of a rectifier which can convert the input alternating current into direct current and a scheme power converter which can adjust the direct current power of the charger in the ground charging station. Insert the plug with wire into the matching socket on the electric vehicle, and input DC energy into the battery for charging. The charger is equipped with a locking lever, which is convenient for the plug to be inserted and pulled out. The lever can also provide a signal to confirm that it has been locked to ensure safety. According to the communication between the charger and the vehicle battery management system, the power converter can adjust the DC charging power online, and the charger can display the charging voltage, charging current, charging amount and charging cost. This is just the basic principle of charging pile, and there are still many details to be improved in practical application, and the most convenient use scheme has been obtained.