Secondary battery protection circuit having a clamping circuit
AssigneeMitsumi Electric Co., Ltd.
InventorsOsamu Kawagoe, Yukihiro Terada
Life of this patent
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Abstract
In a secondary battery protection circuit (200) for protecting a secondary battery (300) by controlling, by turning a discharge control switch (FET1) on and off, a discharging current (I) flowing from the secondary battery (300) through a load (400) connected between a pair of external connection terminals (101, 102), a clamping circuit (210) clamps a control terminal (G1) of the discharge control switch (FET1) into a ground potential when the external connection terminals (101, 102) are short-circuited.
Claims5
A method of protecting a secondary battery by controlling, by turning a discharge control switch on and off, a discharging current flowing from said secondary battery through a load connected between a pair of external connection terminals, said discharge control switch having a control terminal, said method comprising the step of:
- clamping the control terminal of said discharge control switch into a ground potential when said external connection terminals are short-circuited.
A secondary battery protection circuit for protecting a secondary battery by controlling, by turning a discharge control switch on and off, a discharging current flowing from said secondary battery through a load connected between a pair of external connection terminals, said discharge control switch having a control terminal, said secondary battery protection circuit comprising:
- a clamping circuit for clamping the control terminal of said discharge control switch into a ground potential when said external connection terminals are short-circuited.
Dependencies are inferred from the claim text.