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Power supply apparatus to provide power to electrical equipment from a plurality of battery packs and its method of power supply

  • US 5,652,499 A
  • Filed: 02/16/1996
  • Issued: 07/29/1997
  • Est. Priority Date: 02/20/1995
  • Status: Expired due to Fees
First Claim
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1. A power supply apparatus to provide power to electrical equipment from a plurality of battery packs containing rechargeable batteries, said power supply apparatus comprising:

  • (1) a case which is portable and is provided with battery attachment sections for attaching the plurality of battery packs containing the rechargeable batteries;

    (2) a charging circuit housed within said case for charging the battery packs when attached to said battery attachment sections;

    (3) a charging power input section provided in said case to supply charging power to said charging circuit for charging the battery packs when attached to the battery attachment sections;

    (4) a discharge circuit housed within said case for sequentially switching discharge from one of the plurality of battery packs to another; and

    (5) a discharge power output section provided in said case to output discharge power from the battery packs, when attached to the battery attachment sections, through said discharge circuit for external use.

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