×

Charging stand for electric vehicle

  • US 9,333,867 B2
  • Filed: 07/28/2011
  • Issued: 05/10/2016
  • Est. Priority Date: 08/02/2010
  • Status: Expired due to Fees
First Claim
Patent Images

1. A charging stand for an electric vehicle, the charging stand comprising:

  • a main body;

    a door coupled to the main body;

    a power supply unit configured to provide power to the electric vehicle; and

    an alarm device configured to detect whether the door is open or closed and generate an alarm when the door is opened, the alarm device comprising;

    a door sensing unit configured to cause a change in impedance of a circuit of the alarm device when the door is opened;

    a controller configured to receive a signal transmitted from the door sensing unit;

    a switching circuit configured to be activated by the controller;

    a relay configured to be turned on or off by the switching circuit;

    a history record unit configured to record information related to each occurrence of the door opening according to an on/off signal of the relay; and

    an alarm unit configured to generate the alarm according to the on/off signal of the relay,wherein the controller is further configured to;

    shut off the power provided by the power supply unit when the door is opened;

    repeatedly determine a status of the door at predetermined intervals of time;

    cause the history record unit to generate a record for a result of each of the determinations, wherein each record separately comprises the status and time of corresponding determinationdetermine each occurrence and a corresponding time of the door opening using each determined status of the door according to an on/off status of the relay.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×