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Electric vehicle

  • US 7,096,984 B2
  • Filed: 10/07/2003
  • Issued: 08/29/2006
  • Est. Priority Date: 10/11/2002
  • Status: Expired due to Fees
First Claim
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1. An electric vehicle comprising:

  • a motor;

    a first controller that controls the motor;

    a chargeable battery supplying electric power to the motor;

    a second controller connected to the battery that controls electric charge for the battery and electric discharge from the battery; and

    a first communication path that communicates between the first controller and the second controller,wherein the first controller includes a first power source that operates and stops the first controller and a first power source control circuit that turns ON and OFF the power source, the first communication path includes a first path for connecting the second controller and the first power source control circuit, the second controller transmits an activation signal to the first power source control circuit via the first path when electric charging to the battery starts in a state in which the first controller has not been activated, and the first controller is adapted to start by a turning-ON operation of the first power source by the first power source control circuit in response to the transmitted activation signal;

    a battery charger, brought into and out of electrical contact with the battery and the second controller, the battery charger charges the battery in a state of being electrically connected to the battery and the second controller;

    the battery charger includes a third controller for controlling an output current and/or an output voltage during a charging operation of the battery charger, anda second communication path that communicates between the second controller and the third controller,wherein the second controller includes a second power source that operates and stops the second controller and a second power source control circuit that turns ON and OFF the second power source, the second communication path includes a second path that connects the third controller and the second power source control circuit, the third controller transmits an activation signal to the second power source control circuit via the second path when the battery charger is electrically connected to the battery in a state in which the second controller has not been activated, and the second controller starts by a turning-ON operation of the second power source by the second power source control circuit in response to the transmitted activation signal.

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