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Intelligent battery power system

  • US 5,825,100 A
  • Filed: 08/05/1996
  • Issued: 10/20/1998
  • Est. Priority Date: 04/28/1993
  • Status: Expired due to Term
First Claim
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1. A battery power system comprising:

  • a replaceable main battery having a first power supplying capacity, and a swap battery having a second power supplying capacity smaller than the first power supplying capacity, for supplying power to a main system, wherein the swap battery is built-in in the battery power system;

    battery presence detecting means for detecting whether said main battery is detached from said battery power system;

    power control means for supplying power from said swap battery to the main system when said battery presence detecting means detects that said main battery is detached from said battery power system, and for interrupting power from said swap battery and supplying power from said main battery to the main system when said battery presence detecting means detects that said main battery is not detached from said battery power system;

    an AC adapter, connected to said power control means, for providing power from an AC power line;

    a first power line connecting said main battery to said swap battery;

    a second power line connecting said first power line to said power control means; and

    a power switch connected to said power control means for selecting supply of power to said power control means from said AC adapter and from said second power line, said power control means

         1) operating said battery power system in a suspend mode and supplying power from said swap battery to the main system when said main battery detecting means detects that said main battery is detached from said battery power system and when said power switch selects supply of power to said power control means from said second power line,

         2) interrupting power from said swap battery and supplying power from said main battery to operate said battery power system in a resume mode when said battery presence detecting means detects that said main battery is not detached from said battery power system and when said power switch selects supply of power to said power control means from said second power line, and

         3) operating said battery power system in the resume mode by supplying power to the main system from said AC adapter when said power switch selects supply of power to said power control means from said AC adapter.

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