Battery pack and electronic apparatus using the same
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 27, 2001
Grant Date -
N/A
app pub date -
Mar 29, 2000
filing date -
Jul 30, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
When a power supply activating signal is inputted from an input terminal by depressing a main power supply switch of an electronic apparatus, electric power is supplied from a battery to a protection circuit portion and a management circuit portion through a pack power supply control circuit. Thus, the self discharge of the battery is reduced when a battery pack is not used. The protection circuit portion is operative to output a detection signal to the management circuit portion. Further, the management circuit portion posts a state of the battery to the electronic apparatus. The protection circuit portion is not controlled by the management circuit portion. Thus, even when a bug or a runaway occurs in MCU circuit of the management circuit portion, the battery can be safely protected.
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