my countrys new energy vehicle industry is accelerating, and the lack of downstream charging piles has become the main bottleneck restricting its development.The construction gap in charging pile construction is a good time to develop electric vehicle charging stations. So what are the design specifications of electric vehicle charging stations and charging piles?Lets take a look at the design specifications of electric vehicle charging stations.
Charging pile charging method
Hengliu charging method
The Hengli charging method is to use the method of adjusting the output voltage of the charging device or the method of connecting the series resistance with the battery to maintain the charging method of unchanged charging current.The control method is simple, but because the acceptable current capacity of the battery has gradually decreased as the charging process is proceeded. In the later stage of charging, the charging current is mostly used for electrolytic water, generating gas, and excessive gas.
Constant voltage charging method
The voltage of the charging power maintains a constant value during the full charging time, and as the voltage of the battery end gradually increases, the current gradually decreases.Compared with the Hengliu charging method, its charging process is closer to the best charging curve.Quickly charging with a constant voltage. Due to the low battery power of the battery in the early stages of charging and the large charging current, the current will gradually decrease as the charging is proceeded. Therefore, the system only needs to control the system.
The difference between DC charging pile and AC charging pile
DC charging pile: DC electric vehicle charging station, commonly known as "fast charging". It is fixed installed outside the electric vehicle and connected to the AC grid. It can provide DC power supply devices for non -vehicle electric vehicle power batteries.The input voltage of the DC charging pile uses a three -phase and four -line AC380V ± 15%, the frequency is 50Hz, the output is the adjustable DC power, and the power battery of the electric vehicle is charged.Because the DC charging pile uses a three -phase and four -line power supply, it can provide sufficient power, the output voltage and current adjustment range are large, which can achieve the requirements of fast charging.
AC charging pile: AC electric vehicle charging pile is commonly known as "slow charging". It is fixed installed outside the electric vehicle and connected to the AC grid to provide an AC power supply for the electric vehicle vehicle charger (that is, the charger installed on an electric vehicle).Power supply device.AC charging piles only provide electricity output, no charging function, and the vehicle is connected to the vehicle charging motor to charge the electric vehicle.It is equivalent to just a role in controlling the power supply.
The difference between the two: In short, the communication charging pile needs to be charged by the vehicle -carrier charger. The DC fast charging pile does not require this device.The two are very different in the charging speed. It takes 8 hours to fully discharge a pure electric vehicle (general battery capacity) after full discharge, and it takes only 2 to 3 hours to fast charging pile by DC charging pile.AC charging piles provide electric input to the charger of electric vehicles. Because the power of the vehicle charging machine is not high, fast charging cannot be achieved.DC fast charging piles are fixed installed outside the electric vehicle and connected to the AC grid. It can provide a DC power supply device for the power battery of non -vehicle electric vehicles. DC charging piles can provide sufficient power. The output voltage and current adjustment range is large., It can achieve fast charging requirements.
Future smart charging piles
Enhance communication function
The X terminal of V2X assists the automatic parking system through the camera and DSRC. The ultrasonic sensor is used to assist the future automatic parking system, the combination of wireless charging and V2I, and V2I radiates other non -new energy vehicles.
Vehicle security
With 360 degrees monitoring, it is provided to the owner service.In essence, it can be carried out with the driving recorder (startup)+charging pile monitoring (stop).For electric vehicles, 12VDCDC can supplement lead -acid batteries, which can be completely realized in the charging stage to wake up the situation in the vehicle in the vehicle.
Vehicle maintenance
In the future, with the fall of the 4S system, the vehicle can lay out a maintenance model based on the charging point.You can provide OBD reading services for various vehicles. This is an open OBD diagnostic mode. It is not a mode of inserting a vehicle, but a need to diagnose the questioning mode and avoid the risk of some vehicles.

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