In an embodiment, an electronic component fuse 10 includes: (1) an insulator sleeve 11 having a hollow part 11a that opens to the exterior at both ends; (2) a conductor element 12 having a fusible part 12a whose cross-section is smaller than the cross-section of the hollow part 11a, a first engagement part 12b provided at one end of the fusible part 12a, and a second engagement part 12c provided at the other end of the fusible part 12a, where the fusible part 12a is positioned in the hollow part 11a, the first engagement part 12b and the second engagement part 12c are disposed on the respective ends of the insulator sleeve 11; (3) a first terminal 13 having a first connection part 13a connected to the first engagement part 12b; and (4) a second terminal 14 having a second connection part 14a connected to the second engagement part 12c.

A chip component includes a chip component main body, an electrode pad formed on a top surface of the main body, a protective film covering the top surface of the main body and having a contact hole exposing the pad, and an external connection electrode electrically connected to the pad via the hole and having a protruding portion, which, in a plan view looking from a direction perpendicular to a top surface of the pad, extends to a top surface of the film and protrudes further outward than a region of contact with the pad over the full periphery of an edge portion of the hole. A method for manufacturing the component includes forming the pad on the main body's top surface, forming the protective film, forming the hole in the film so as to expose the pad, and forming the electrode electrically connected to the pad via the hole.

A chip component includes a chip component main body, an electrode pad formed on a top surface of the main body, a protective film covering the top surface of the main body and having a contact hole exposing the pad, and an external connection electrode electrically connected to the pad via the hole and having a protruding portion, which, in a plan view looking from a direction perpendicular to a top surface of the pad, extends to a top surface of the film and protrudes further outward than a region of contact with the pad over the full periphery of an edge portion of the hole. A method for manufacturing the component includes forming the pad on the main body's top surface, forming the protective film, forming the hole in the film so as to expose the pad, and forming the electrode electrically connected to the pad via the hole.

An electrical storage module 10 includes: an electrical storage element group 11 in which a plurality of electrical storage elements 12 are stacked on one another, each electrical storage element having lead terminals 13 that protrude from a side edge of the electrical storage element; and fuses 45 that are electrically connected to the lead terminals 13. Detection terminals 50 for detecting a state of the electrical storage elements 12 are directly connected to the fuses 45.

An electrical storage module 10 includes: an electrical storage element group 11 in which a plurality of electrical storage elements 12 are stacked on one another, each electrical storage element having lead terminals 13 that protrude from a side edge of the electrical storage element; and fuses 45 that are electrically connected to the lead terminals 13. Detection terminals 50 for detecting a state of the electrical storage elements 12 are directly connected to the fuses 45.

A capacitor assembly has series-connected capacitor element groups, each with a plurality of capacitor elements connected in parallel. The capacitor elements are divided into a first sub-set and a second sub-set. The capacitor elements of the first sub-set have a fuse while those of the second sub-set do not have a fuse. Extended operation is achieved even in the event of individual malfunctioning capacitor elements by using capacitor elements with fuses to separate the corresponding capacitor element in the event of a failure without generating a substantial change in the capacitance of the entire capacitor assembly. In order to prevent an avalanche effect in which the entire capacitor element group is separated, a sub-set of the capacitor elements do not have a fuse, so that a capacitor element is always provided which generates a bridge of the respective capacitor element group in the event of a failure.

A capacitor assembly has series-connected capacitor element groups, each with a plurality of capacitor elements connected in parallel. The capacitor elements are divided into a first sub-set and a second sub-set. The capacitor elements of the first sub-set have a fuse while those of the second sub-set do not have a fuse. Extended operation is achieved even in the event of individual malfunctioning capacitor elements by using capacitor elements with fuses to separate the corresponding capacitor element in the event of a failure without generating a substantial change in the capacitance of the entire capacitor assembly. In order to prevent an avalanche effect in which the entire capacitor element group is separated, a sub-set of the capacitor elements do not have a fuse, so that a capacitor element is always provided which generates a bridge of the respective capacitor element group in the event of a failure.

An electricity storage module that includes a power storage element group obtained by stacking a plurality of power storage elements each having a lead terminal that protrudes from a side edge; and holding members that are attached to the side edges at which the lead terminals are provided and that hold the power storage elements, the holding members being provided with a fuse mounting portion for mounting a fuse that is to be electrically connected to the lead terminal.

A power capacitor unit for high-pressure applications is provided. The power capacitor unit includes a housing, a plurality of capacitor elements connected to each other and arranged inside the housing, a dielectric liquid (L), a solid electrical insulation system arranged to electrically insulate each capacitor element, a busbar, a plurality of fuse wires, each fuse wire having a first end connected to a respective capacitor element and a second end connected to the busbar (B), wherein the capacitor elements, the solid electrical insulation system, and the fuse wires are immersed in the dielectric liquid (L). Each fuse wire has a plurality of first sections that are in physical contact with the electrical insulation system, and wherein each fuse wire has a plurality of second sections without physical contact with the solid electrical insulation system.

A capacitor assembly has series-connected capacitor element groups, each with a plurality of capacitor elements connected in parallel. The capacitor elements are divided into a first sub-set and a second sub-set. The capacitor elements of the first sub-set have a fuse while those of the second sub-set do not have a fuse. Extended operation is achieved even in the event of individual malfunctioning capacitor elements by using capacitor elements with fuses to separate the corresponding capacitor element in the event of a failure without generating a substantial change in the capacitance of the entire capacitor assembly. In order to prevent an avalanche effect in which the entire capacitor element group is separated, a sub-set of the capacitor elements do not have a fuse, so that a capacitor element is always provided which generates a bridge of the respective capacitor element group in the event of a failure.