POWER FUSE AND FABRICATION METHODS WITH ENHANCED ARC MITIGATION AND THERMAL MANAGEMENT
First Claim
Patent Images
1. A power fuse comprising:
- a housing;
first and second conductive terminals coupled to the housing;
a conductive fuse element in the housing and electrically connected to the first and second conductive terminals, the conductive fuse element constructed to structurally fail when subjected to a predetermined electrical current condition in an electrical power system; and
an arc extinguishing filler surrounding the conductive fuse element in the housing;
wherein the arc extinguishing filler material comprises a molecular sieve material that is hydrated in a targeted amount, or adjusted in hydration to a targeted amount, to achieve and maintain a predetermined melting time-current characteristic of the conductive fuse element in response to the predetermined electrical current condition.
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Accused Products
Abstract
Power fuses having filler material including hydrated zeolite material facilitates increasing power density of electrical fuses in reduced package sizes. The hydrated zeolite material releases water to cool and suppress electrical arcing conditions experienced in higher power circuitry.
14 Citations
20 Claims
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1. A power fuse comprising:
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a housing; first and second conductive terminals coupled to the housing; a conductive fuse element in the housing and electrically connected to the first and second conductive terminals, the conductive fuse element constructed to structurally fail when subjected to a predetermined electrical current condition in an electrical power system; and an arc extinguishing filler surrounding the conductive fuse element in the housing; wherein the arc extinguishing filler material comprises a molecular sieve material that is hydrated in a targeted amount, or adjusted in hydration to a targeted amount, to achieve and maintain a predetermined melting time-current characteristic of the conductive fuse element in response to the predetermined electrical current condition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A power fuse comprising:
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a housing; first and second conductive terminals coupled to the housing; a conductive fuse element in the housing and connected between the first and second conductive terminals, wherein the fuse element is constructed to facilitate arc division as the fuse element opens in a predetermined overcurrent condition; and an arc extinguishing filler surrounding the fuse element in the housing, the arc extinguishing filler material comprising at least one zeolite material that is hydrated in a targeted amount, or adjusted in hydration to a targeted amount, to achieve and maintain a predetermined melting time-current characteristic of the conductive fuse element in response to the predetermined electrical current condition. - View Dependent Claims (15, 16, 17, 18)
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19. A method of making an electrical power fuse including a conductive fuse element extending internal to a housing between first and second conductive terminals, the method comprising:
surrounding the fuse element in the housing with an arc extinguishing filler material including at least one zeolite material that is hydrated in a targeted amount, or adjusted in hydration to a targeted amount, to achieve and maintain a predetermined melting time-current characteristic of the conductive fuse element in response to the predetermined electrical current condition. - View Dependent Claims (20)
Specification