Secondary cell protection circuit device and secondary cell assembly
AssigneeTyco Electronics Raychem GmbH
InventorsTakashi Sato, Naofumi Miyasaka, Takashi Hasunuma
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Abstract
A PTC device formed integrally on a PCB substrate, such a PCB substrate, a secondary battery protection circuit device comprising such PCB substrate provided with a circuit to control the voltage and current of secondary batteries, and a secondary battery assembly provided with said device. A PCB substrate 1 is provided with an electronic component 2 and a PTC device 3. The PTC device 3 has a construction having a PTC material 6 in the center, which is provided with foils 7, 7′ made of nickel foil on its top and bottom; an outlet electrode 4 is provided on the foil 7, and an outlet electrode 5, provided on the PCB substrate, is soldered below.
Claims14
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.
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 a secondary battery using the PTC device, and
- (c) comprising a control circuit to control the current and voltage of the secondary battery.
Dependencies are inferred from the claim text.