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Mechanism for locking and fault detection in the electrical vehicle supply equipment cord reel

  • US 9,969,278 B2
  • Filed: 12/14/2015
  • Issued: 05/15/2018
  • Est. Priority Date: 08/15/2013
  • Status: Active Grant
First Claim
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1. An external, Level 1 vehicle charging system comprising:

  • a) An external cord reel subassembly for providing an electrical cord to facilitate an extension of a vehicle connector;

    b) a ground fault detection mechanism connected to the cord reel subassembly to determine a presence of a fault event;

    c) a control circuit operatively connected to the detection mechanism for automatically shutting down the external, Level 1 vehicle charging system in an occurrence of a fault event, the control circuit further connected to the external cord reel subassembly for further automatically reinitiating the charging event at a short, predetermined interval; and

    d) a detection verification circuit for generating a simulated ground fault signal for verifying an operability of the ground fault detection mechanism in connection with a charging event.

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