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Charging apparatus for controlling supplement of electric current to a rechargeable battery

  • US 5,675,235 A
  • Filed: 02/23/1996
  • Issued: 10/07/1997
  • Est. Priority Date: 02/28/1995
  • Status: Expired due to Fees
First Claim
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1. A charging apparatus for providing electric power to a rechargeable battery, wherein said charging apparatus comprises:

  • a first current stabilized unit providing a first electric current to said rechargeable battery;

    a second current stabilized unit providing a second electric current to said rechargeable battery, wherein said second electric current is less than said first electric current;

    a switching unit switching a connection of said first and second current stabilized units to provide current to said rechargeable battery; and

    a detection unit detecting an electric voltage of a terminal of said rechargeable battery, and for controlling the switching unit so as to switch the connection of said first and second current stabilized units to provide current to said rechargeable battery from the first current stabilized unit until a first detection of a predetermined electric voltage of the terminal, then to switch to connection of the second current stabilized unit to provide current to said rechargeable battery unit until a second detection of the predetermined electric voltage of the terminal, and then to disconnect the first and second current stabilized units.

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