Battery over-current protection circuit

Details Battery over-current protection circuit Battery over-current protection circuit

1994-01-13

1996-12-17

Gaffin, Jeffrey A.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

361 58, 361 59, 361 75, 323277, H02H 300

Patent

active

055859941

ABSTRACT:
A first series circuit of a current detector and a first switch is connected in series with a battery, and a second series circuit of a resistor and a second switch is connected in parallel with the first series circuit. A control device controls an on and off state of the first and second switches to provide over-current protection of the battery. In particular, the control device turns off the first switch to cut-off battery over-current and turns on the second switch when the battery current exceeds a specified level as detected by the current detector. Then, after the battery current, which flows through the second series current, drops below the specified level, the first switch is returned to an on state to again allow battery discharge.

REFERENCES:
patent: 4019096 (1977-04-01), Bullinga
patent: 4363064 (1982-12-01), Billings et al.
patent: 4528608 (1985-07-01), Andersson et al.

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