Double-gun direct current charging pile for electric automobile

Abstract

The invention discloses a double-gun direct current charging pile for an electric automobile. The double-gun direct current charging pile for the electric automobile comprises a charging pile casing, an intelligent controller, two charging interface modules, a rectification module, an electric leakage protection switch, a lightning arrester, an intelligent electric meter, a touch screen, a card reader, an auxiliary switch power supply, an intelligent monitoring module, an alternating current / direct current measurement and control module, an insulation detection module, a signal lamp, a sudden stop control switch and a cooling fan. The two charging interface modules comprise charging guns, direct current contactors, fusing protectors and shunts. Charging gun direct current charging interfaces DC + are connected with the direct current contactors and the fusing protectors respectively, two charging gun direct current charging interfaces DC- are jointly connected with a shunt, a charging gun auxiliary power interfaces each are connected with an auxiliary control relay, charging communication interfaces of the two charging guns are connected with a communication interface of the intelligent controller through a switching relay, the direct current contactors and the auxiliary control relay are controlled by and connected with the intelligent controller, and the intelligent controller is used for controlling auxiliary contacts of the direct current contactors and the auxiliary control relay.

Description

technical field [0001] The invention relates to a charging device, in particular to a DC charging pile for electric vehicles with one machine and two guns. Background technique [0002] In recent years, with the rapid development of the new energy vehicle market, the demand for charging piles has also increased significantly. In the global market, countries have introduced relevant policies to speed up the construction of charging pile equipment. According to the "Guidelines for the Development of Electric Vehicle Charging Infrastructure (2015-2020)" issued by the National Development and Reform Commission, the goal of my country's charging infrastructure development is to build 12,000 centralized charging and swapping stations and 4.8 million decentralized charging piles by 2020 to meet the needs of the country. 5 million electric vehicle charging needs. However, in the current market, the main charging equipment manufacturers mainly provide DC charging piles with one mach...

AI Technical Summary

Problems solved by technology

However, in the current market, the main charging equipment manufacturers mainly provide DC charging piles with one machine and one gun. The standby power consumption is included in the metering and billing, and only one charge can be realized. The comprehensive price of the equipment is high, the comprehensive area is large, and the comprehensive utilization rate is low.

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