Battery pack short-circuit protection circuit and method

Details Battery pack short-circuit protection circuit and method Battery pack short-circuit protection circuit and method

1997-07-31

1999-08-31

Wong, Peter S.

Electricity: battery or capacitor charging or discharging

Battery or cell discharging

With charging

320136, H02J 700

Patent

active

059458097

ABSTRACT:
A battery pack short-circuit protection circuit and a method whereby fire damage etc. of a battery pack caused by short-circuiting of terminals by metal objects etc., which cannot be prevented simply by an over-current cut-off switch, can be reliably prevented. In a current path between a battery pack charging/discharging terminal of the battery pack and a battery cell in the battery pack, there is provided a switching circuit that effects opening and closing of the current path; a switch drive circuit is provided that drives the switching circuit; the switching circuit closes the current path only when a drive control signal is applied through a control terminal from the charging/discharging device or the main unit of the equipment.

REFERENCES:
patent: 5477130 (1995-12-01), Hashimoto et al.
patent: 5744937 (1998-04-01), Cheon
patent: 5801514 (1998-09-01), Saeki et al.

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