Electric automobile charge system

Abstract

The invention discloses an electric automobile charge system. The system is provided with multiple charge output interfaces, and comprises a charge unit and at least one switching unit connected with the output port of the charge unit, wherein each switching unit comprises one or more switch units, each switch unit comprises a first semiconductor switch or a second semiconductor switch and a third semiconductor switch which are successively connected, and each switch unit is used for switching on and switching off to switch power output between the charge unit and the multipath charge output interfaces according to charge states of electric automobiles connected with the switch unit. The electric automobile charge system provided by the invention has the following steps: the switch units composed of the semiconductor switches are installed at the anode and / or cathode output port of each power supply module, through controlling the conduction or disconnection of the semiconductor switches, the power output between the power supply modules and the multiple charge output interfaces can be flexibly distributed, the system cost is low, and the occupied space is small.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to an electric vehicle charging system with multiple charging output interfaces. Background technique [0002] With the development of society and people's higher and higher requirements for environmental protection, the prospect of electric vehicles is widely optimistic. The number of electric vehicle charging stations is also increasing. In order to save land resources and construction costs, operators require charging piles to have the function of "one machine with multiple charging", that is, charging piles have multiple charging output interfaces, which can meet the requirements of multiple charging at the same time. The function of charging the car. [0003] The solution adopted by the current charging system is to use a contactor to switch the power output between each power supply module and multiple charging output interfaces in the charging system. However, the...

AI Technical Summary

Problems solved by technology

However, the contactor, especially the DC contactor, is extremely bulky and expensive, and it will make a lot of noise when it operates, and when the current is cut off, when the mechanical contact is docked to open the space, there will be obvious arcs, and the generated arcs will not only Ablation of contacts will affect their service life and bring safety hazards

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