Protective element

A technology for protecting components and heating elements, applied to electrical components, emergency protection devices, circuits, etc., can solve problems such as abnormal drop in output voltage
CN105474346AActive Publication Date: 2016-04-06DEXERIALS CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DEXERIALS CORP
Publication Date
2016-04-06

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Abstract

The present invention reduces a melting time without causing an increase in the man-hours for manufacturing a fusible conductor. The present invention is provided with an insulated substrate (11), a heating element (14), an insulating member (15) for covering the heating element (14), a heating element extraction electrode (16) electrically connected to the heating element (14), a first and a second electrode (12), and a fusible conductor (13) connected to the heating element extraction electrode (16) and through to the first and second electrodes (12), the fusible conductor (13) cutting, by melting, a current path between the first electrode (12)(A1) and the second electrode (12)(A2). The fusible conductor (13) is formed in greater thickness than a principal surface part (25), and has a pair of first side edge parts (26) facing each other and a pair of second side edge parts (27) facing each other and formed in lesser thickness than the first side edge parts, the second side edge parts (27) being disposed along the current path extending from the heating element extraction electrode (16) to the first and second electrodes (12).
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Description

technical field

[0001] The present invention relates to a protection element that cuts off a current path when abnormalities such as overcharge and overdischarge occur, and a protection circuit board on which the protection element is mounted. This application claims priority on the basis of Japanese Patent Application No. Japanese Patent Application No. 2013-171786 for which it applied in Japan on August 21, 2013, and this application is referred in this application. Background technique

[0002] Most rechargeable and reusable secondary batteries are processed into battery packs and provided to users. Especially in lithium-ion secondary batteries with high gravimetric energy density, in order to ensure the safety of users and electronic equipment, several protection circuits such as overcharge protection and overdischarge protection are usually built into the battery pack, with A function to cut off the output of the battery pack.

[0003] In this kind of protection eleme...

Claims

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