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Power supply control device for electric vehicle

  • US 5,796,175 A
  • Filed: 07/30/1996
  • Issued: 08/18/1998
  • Est. Priority Date: 08/03/1995
  • Status: Expired due to Term
First Claim
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1. A power supply control device for an electric vehicle, comprising:

  • a voltage converter means connected through a main switch to a high-voltage battery;

    a drive motor energized by the high-voltage battery;

    a low-voltage battery and vehicle periphery equipment both connected to the voltage converter means for receiving a power supply;

    a switch controlling means, connected to at least one of the voltage converter means and the low-voltage battery, for receiving a power supply and for controlling the opening and closing actions of the main switch; and

    a means for supplementally supplying a backup power to the switch controlling means so that the switch controlling means is energized with enough power to ensure a normal operation of the switch controlling means,wherein said switch controlling means receives a sum of voltage outputs of said voltage converter means, said low-voltage battery and said means for supplying said backup power.

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