Protective device

By designing the combination of fuse elements, insulating members and heating elements in the protection device, the shortcomings of arc discharge and blocking functions in high voltage and high current environments are solved, and the double blocking of current and the protection of the insulated shell are achieved.

CN119768885APending Publication Date: 2025-04-04DEXERIALS CORP
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Patent Information

Application Number
CN202380061597.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2023-05-25
Filing Date
2023-08-25
Publication Date
2025-04-04

AI Technical Summary

Technical Problem

In the current path of high voltage and high current, large-scale arc discharge is easily generated when the fuse element is fuse, resulting in damage to the insulating shell. The current fuse of the prior art can only achieve overcurrent blocking and fail to take into account the blocking function based on the blocking signal.

Method used

A protective device is designed, using a fuse element arranged in which the first terminal and the second terminal are arranged separately from each other, and through the cooperation of the insulating member and the heating element, arc discharge is suppressed, while achieving overcurrent and blocking functions based on the blocking signal.

Benefits of technology

It effectively suppresses arc discharge when fuse components are fused, enhances the insulation ability of the protection device, and realizes the dual blocking function of high voltage and high current.

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Abstract

This protection device is provided with: a first terminal and a second terminal which are arranged so as to be separated from each other in the front-rear direction; a fuse element disposed between the first terminal and the second terminal and electrically connecting the first terminal and the second terminal, the fuse element being fused when a current of a predetermined or more flows; insulating members disposed so as to face the fuse element from both sides in the vertical direction orthogonal to the front-rear direction; a heating element disposed so as to overlap the fuse element in the vertical direction; a power supply member that supplies a current to the heating element; and an insulating housing that accommodates a portion of the first terminal, a portion of the second terminal, the fuse element, the insulating member, the heating element, and a portion of the power supply member, and the heating element generates heat by energizing from the power supply member and fuses at least a portion of the fuse element.
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