Patent ID: 6031358
Filing Date: 2000-02-29
Classification: H01M,H02J,Y02E

Abstract:
An apparatus for preventing short circuiting of a battery having at least a pair of terminals which are intended to be electrically connected to an electronic device having at least a pair of power terminals, comprising:a battery unit which houses the battery;a first voltage supply terminal connected to a first battery terminal;a second voltage supply terminal;a switch connected between a second battery terminal and the second voltage supply terminal and with one or more of the battery terminals being insulated from electrical contact from outside of the battery unit;a triggering device attached to either the electronic device or the battery unit, wherein the triggering device is a resistor having a predetermined value within a predetermined range of values;an activating circuit for generating an activating signal when the resistor of the triggering device is connected in the activating circuit upon attachment of the battery unit to the electronic device;a detecting circuit connected to the switch for detecting the activating signal and wherein the switch connects the second battery terminal to the second voltage supply terminal when the activating circuit supplies the activating signal to the switch; andwherein the triggering device only triggers the activating circuit when the battery unit is mounted on the electronic device.