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Protective circuit for a secondary battery pack and method of operating the same

  • US 20060077603A1
  • Filed: 09/02/2005
  • Published: 04/13/2006
  • Est. Priority Date: 09/07/2004
  • Status: Active Grant
First Claim
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1. A protective circuit for a secondary battery pack comprising:

  • a plurality of banks adapted to be charged or to discharge voltage;

    a plurality of controllers, each one of the plurality of controllers being adapted to sense a charging or discharging voltage of a respective one of the plurality of banks and output a predetermined voltage if overcharging or over-discharging is sensed;

    at least one level shifter adapted to shift a voltage output from one of the plurality of controllers to create an adjusted voltage output approximately equal to an output voltage from one of another of the plurality of controllers; and

    a switching means adapted to stop the charging or discharging of the plurality of banks.

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