Battery system which prevents current from flowing during a shor

Details Battery system which prevents current from flowing during a shor Battery system which prevents current from flowing during a shor

1995-02-22

1998-11-10

Gaffin, Jeffrey A.

Electrical transmission or interconnection systems

Switching systems

Condition responsive

307150, 320112, 320116, 361 18, 361 82, H01H 3500, H02J 700

Patent

active

058359893

ABSTRACT:
A rechargeable battery package includes circuitry with a switching device which disconnects the exterior terminals of the battery package from one or more batteries therein. The circuit also includes a device having a diode function which allows the battery or batteries to be charged regardless of the state of the switching device. A power MOS-FET having a diode characteristic is used for the switching device and diode device. The gate of the power MOS-FET controls the disconnections of the batteries within the battery package. The gate is connected to a switch such as a reed relay contained within the battery package which is triggered by a magnet within a portable computer. Alternatively, a control terminal may be provided on the exterior of the battery package which is connected to the gate of the power MOS-FET.

REFERENCES:
patent: 3686530 (1972-08-01), Bogut
patent: 4578628 (1986-03-01), Siwiak
patent: 4673826 (1987-06-01), Masson
patent: 4857985 (1989-08-01), Miller
patent: 5363030 (1994-11-01), Ford et al.
patent: 5410441 (1995-04-01), Allman
patent: 5471128 (1995-11-01), Patino et al.
patent: 5477130 (1995-12-01), Hashimoto et al.
patent: 5493197 (1996-02-01), Eguchi et al.
Hitachi Power MOS FET Data Book, 5th Ed., Jul. 1992, pp. 41-43.

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