US 12,400,817 B2 · Fabrication of printed fuse

Abstract

A power fuse for protecting an electrical load subject to transient load current cycling events in a direct current electrical power system is provided. The power fuse includes at least one fuse element assembly that includes one or more substrates, one or more sets of weak spots, and a conductor. The weak spots are formed on the substrates, and the substrates are longitudinally spaced apart from one another along the conductor. The conductor is separately provided from the substrate and the weak spots. The conductor includes one or more strips of metal having no stamped weak spot openings therein and therefore avoiding thermal-mechanical fatigue strain in the conductor when subjected to the transient load current cycling events. The conductor includes connector sections that are attached to respective ones of the sets of weak spots, and extending sections coupling the connector sections.

Claims17

Dependent claims

A power fuse for protecting an electrical load subject to transient load current cycling events in a direct current electrical power system, the power fuse comprising:

at least one fuse element assembly comprising:
one or more substrates;
one or more sets of weak spots respectively formed on top of the one or more substrates, each set of weak spots comprising one or more fusible weak spots;
and
a conductor separately provided from the one or more substrates and the one or more sets of weak spots, wherein the conductor comprises one or more strips of metal having no stamped weak spot openings therein and therefore avoiding thermal-mechanical fatigue strain in the conductor when subjected to transient load current cycling events, the conductor further comprising:
connector sections that are attached to respective ones of the one or more sets of weak spots;
and
extending sections coupling the connector sections,
wherein the one or more substrates are longitudinally spaced apart from one another along the conductor.

6 more elements

A method of fabricating a power fuse for protecting an electrical load subject to transient load current cycling events in a direct current electrical power system, the method comprising:

forming one or more sets of weak spots respectively on top of one or more substrates, each set of weak spots comprising one or more fusible weak spots;
providing a conductor separately from the one or more substrates and the one or more sets of weak spots, wherein the conductor includes one or more strips of metal having no stamped weak spot openings therein and therefore avoiding thermal-mechanical fatigue strain in the conductor when subjected to transient load current cycling events, the conductor further including:
connector sections, and
extending sections coupling the connector sections;
and
attaching the connector sections of the conductor to respective ones of the one or more sets of weak spots,
wherein the one or more substrates are longitudinally spaced apart from one another along the conductor.

4 more elements

Dependencies are inferred from the claim text.

Fabrication of printed fuse

Life of this patent

Fabrication of printed fuse

Life of this patent

Abstract

Claims17