Title:
【発明の名称】電池パック保護回路
Document Type and Number:
Japanese Patent JP2002528022
Kind Code:
A
Abstract:
A battery protection circuit for an external battery pack has a switch for controlling connection of a battery output to a load and a detector for detecting a resistance at a load output terminal. A first comparator compares the detected resistance to a predetermined maximum value, and a second comparator compares the detected resistance to a predetermined minimum value. If the detected resistance is in the range between the minimum and maximum values, a control signal is produced to enable connection of the battery output to the load. If the detected resistance is outside the range, the switch is disabled and no current can flow to the load.
Inventors:
Petersel, Paul Yi
Application Number:
JP2000575202A
Publication Date:
August 27, 2002
Filing Date:
October 05, 1999
Export Citation:
Assignee:
QUALCOMM INCORPORATED
International Classes:
H01M10/44; H02H3/12; H02H7/18; H02H11/00; H02J7/00; (IPC1-7): H02H7/18; H01M10/44; H02J7/00
Attorney, Agent or Firm:
Takehiko Suzue (4 outside)