Multi-parking-space alternating current charging centralized control system

Abstract

A multi-parking-space alternating current charging centralized control system comprises a main machine and a plurality of auxiliary machines, and the main machine supplies power to the auxiliary machines and controls charging of the auxiliary machines. The main machine is powered by a three-phase 380VAC alternating current, three paths of single-phase alternating current power supplies are uniformly distributed to supply power to the auxiliary machine in the system, and the main machine and the auxiliary machine are respectively provided with two charging interface outputs meeting national standard requirements. The main machine is provided with a three-phase power supply cable input, a power line bank and a wireless network terminal; the input of the three-phase power supply cable is connected with a power distribution system to obtain power supply; the power line bank is used for distributing an input three-phase alternating-current power supply into three paths of single-phase alternating-current power supplies and supplying power to the auxiliary machine through the auxiliary machine cable; the main machine manages all the charging interfaces through a background connected with the wireless network terminal. The auxiliary machine shares the three-phase power supply cable of the main machine, and construction cost is saved. The two charging interfaces of the main machine and the auxiliary machine can be mutually coordinated and automatically switched in turns, and the utilization rate of electric power resources is high.

Description

technical field [0001] The invention relates to the technical field of AC charging for electric vehicles, in particular to a centralized control system for AC charging with multiple parking spaces. Background technique [0002] Green travel and the popularization of electric vehicles can reduce exhaust pollution and protect the environment. The widespread use of electric vehicles requires sufficient charging piles. There are charging piles that can be charged when parking at the residence, and there is enough power for travel, so everyone can buy with confidence. As the penetration rate of electric vehicles is not high at present, fuel vehicles still occupy the mainstream, and the number of charging piles is far from enough. The shortage of parking spaces makes parking difficult, so that the parking spaces with charging piles are often occupied by fuel vehicles, so that electric vehicles are often not available. Local charging also wastes the resources of charging piles. ...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the above-mentioned problems in the prior art, and provide a centralized control system for multi-parking AC charging. One host centrally controls multiple charging interfaces of several auxiliary machines to charge electric vehicles. Divided into three-way single-phase AC power and evenly distributed to other auxiliary machines for single-phase AC charging; multiple auxiliary machines share the three-phase cable power supply of the main machine, and only one power supply cable is laid, which greatly reduces the construction cost of laying cables; It can be shared with the ground wire. In the case of the same power capacity, the cost of one three-phase cable is lower than that of three single-phase cables.

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