Discharge control circuit of batteries
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 12, 2002
Grant Date -
Aug 30, 2001
app pub date -
Jan 26, 2001
filing date -
Feb 29, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A discharge control circuit that securely prevents an over discharge of a battery. The control circuit includes a discharge control switch connected to the battery for cutting off a discharge current of the battery in response to a discharge stop signal. A control circuit is connected to the battery and the discharge control switch generates the discharge stop signal for deactivating the discharge control switch when a voltage of at least one cell reaches a lower limit. The control circuit includes a switch holding circuit for continuously supplying the discharge stop signal to the discharge control switch for a predetermined time after the discharge stop signal is generated regardless of the cell voltage.
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