Patent ID: 6713210
Filing Date: 2004-03-30
Classification: H01C,H01M,H05K,Y02E,Y02P

Abstract:
A secondary battery assembly comprising(1) a secondary battery, and (2) a secondary battery protection circuit device which comprises a PCB substrate, said PCB substrate (a) having mounted on it a PTC device which (i) exhibits positive temperature coefficient behavior, (ii) comprises a PTC material positioned between first and second metal foils which form surfaces of the device, and (iii) has a pair of outlet electrodes formed integrally on its surfaces, at least one of said pair of outlet electrodes being an electrode section formed on the PCB substrate on which are mounted said PTC device and an electronic component; (b) comprising a temperature detecting circuit for the secondary battery using the PTC device, and (c) comprising a control circuit to control the current and voltage of the secondary battery.