A one-pile two-charge electric vehicle DC charging pile

Abstract

The invention discloses an electric vehicle direct-current charging pile capable of charging two vehicles simultaneously. The charging pile comprises an intelligent controller and two charging interface connectors. Direct-current charging interfaces of the two charging interface connectors are respectively connected with a direct-current contactor. Auxiliary power supply interfaces of the two charging interface connectors are respectively connected with an auxiliary control relay. A charging communication interface of the two charging interface connectors is connected with a communication interface of the intelligent controller through a switching relay, and the switching relay is used for switching connection according to the state of a controlling and determining interface of the corresponding charging interface connector. States of the auxiliary control relays, the direct-current contactors and the controlling and determining interfaces of the charging interface connectors are collected through driving in of the vehicles, and the on-off states of the corresponding auxiliary control relays and the direct-current contactors and the on-off states of CAN communication interface of the charging interface connectors and a CAN interface circuit of the intelligent controller are controlled through driving off of the vehicles. The electric vehicle direct-current charging pile is low in manufacturing cost, small in size, little in occupied space and high in comprehensive utilization rate, and meanwhile achieves intelligent and automated control.

Description

technical field [0001] The invention belongs to the field of charging facilities for electric vehicles, in particular to a direct-current charging pile for electric vehicles with one charging pile and two charging piles. Background technique [0002] DC charging pile is a medium and fast charging facility mainly used for daily charging of electric buses and electric cars. The electric vehicle power battery provides direct current power and is easy to operate. It is a fast charging device for various electric vehicles. However, due to its shortcomings such as high cost and large volume, it is very difficult to promote it in places where land prices continue to appreciate. Therefore, how to realize equipment with low cost, low footprint and high utilization rate has become an urgent problem to be solved for large-scale promotion and testing of electric vehicle charging facilities. [0003] At present, the main suppliers of charging facilities in the market mainly provide one...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a DC charging pile for electric vehicles with two charging piles, so as to solve the problems of high cost, large floor space and low utilization rate of the existing DC charging piles.

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