Electrical distribution system recharging station for electric vehicles

摘要

An electric vehicle recharging station that can be readily incorporated into existing building electrical distribution systems during retrofit or new construction. The system has at least one enclosure and a vehicle charging connector. A circuit interrupter has line terminals for connection to respective first and second phases of the distribution system. A contactor relay has first and second phases coupled to the respective circuit interrupter and electric vehicle charging connector phases and separable contacts for each phase, for selective connection of electric power to the charging connector. A recharger controller is coupled to the contactor, for causing selective separation and closing of the separable contacts, so that electrical power is transferred to the electric vehicle. The recharging station system may also incorporate electric rate metering functions as well as communication capability from the controller to a remote controller. A human machine interface may be coupled to the controller.

主权项

1. An electric vehicle recharger, comprising:
an electric vehicle charging connector having first and second connector pins for electrical connection with a charging outlet of an electric vehicle; a ground fault circuit interrupter located within a load center and having first and second line terminals and first and second load terminals, the first and second line terminals respectively coupled to first and second electrical power phases received at the load center, the load center configured to distribute power downstream of the load center and having at least first and second phase busbars; and a recharging station comprising:
an enclosure;a contactor located within the enclosure and comprising a first separable contact coupled between the first load terminal and the first connector pin, and a second separable contact coupled between the second load terminal and the second connector pin;a recharger controller located within the enclosure and coupled to the contactor for selectively opening and closing the first and second separable contacts to selectively transfer electrical power to the electric vehicle, the recharger controller including at least one ground fault detection and monitoring function; andfirst and second current sensing coils located within the enclosure and coupled to the recharger controller and between the contactor and the electric vehicle charging connector, wherein the first current sensing coil is configured to supply metering information to the recharger controller, and the second current sensing coil is configured to enable the at least one ground fault detection and monitoring function; wherein:the recharging station does not include a ground fault circuit interrupter.