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Battery pack and charge circuit therefor

  • US 20010004198A1
  • Filed: 12/14/2000
  • Published: 06/21/2001
  • Est. Priority Date: 12/15/1999
  • Status: Active Grant
First Claim
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1. A battery pack for supplying electric energy to a portable terminal device, comprising:

  • a solar panel unit which converts light energy into electric energy;

    a battery which is rechargeable with the electric energy;

    an interface between said battery pack and said portable terminal device which supplies the electric energy to said portable terminal device;

    an energy supplier being connected to said solar panel unit, said battery and said interface, which supplies the electric energy from said solar panel unit to said interface when said portable terminal device is in operation, while supplying the electric energy from said battery to said interface or charging said battery with part of the electric energy from said solar panel unit in accordance with the amount of electric energy to be used by said portable terminal device.

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