A routing structure of a shielded electric wire, the shielded electric wire including an electric wire and a resin tube is routed in a state of being bent, the resin tube including a shield layer, an inner-side resin and an outer-side resin, the shield layer being interposed between the inner-side resin and the outer-side resin, is provided. A tensile strength of the inner-side resin and the outer-side resin is greater than a bending stress to be generated when the shielded electric wire is bent with a minimum bend radius in the routing structure. The shield layer has a shield resistance equal to or smaller than 103.8 mΩ/m and a shield density equal to or greater than 50%, the shield density being a ratio of an area of a surface of the electric wire covered by the shield layer to an area of the surface of the electric wire.

A wire harness unit including: a conduction path that conducts electricity between in-vehicle devices; and a cooling tube that cools the conduction path, wherein: the conduction path has a hollow tubular conductor having conductivity, and a first insulating layer covered by the tubular conductor, the cooling tube is configured to circulate a refrigerant therethrough and is separate from the tubular conductor, and the cooling tube passes through the first insulating layer.

A wire harness unit including: a conduction path that conducts electricity between in-vehicle devices; and a cooling tube that cools the conduction path, wherein: the conduction path has a hollow tubular conductor having conductivity, and a first insulating layer covered by the tubular conductor, the cooling tube is configured to circulate a refrigerant therethrough and is separate from the tubular conductor, and the cooling tube passes through the first insulating layer.

An electrical connection box for installation in a vehicle includes a bus bar to electrically and thermally interconnect a plurality of electrical components electrically connected to a power storage device or in-vehicle load installed in the vehicle, a casing to house the plurality of electrical components and the bus bar, and an insulating heat dissipation member thermally connected to the bus bar and the casing, with at least two of the plurality of electrical components being disposed adjacent to each other, and the bus bar dissipating heat from the two electrical components via the heat dissipation member.

An electrical connection box for installation in a vehicle includes a bus bar to electrically and thermally interconnect a plurality of electrical components electrically connected to a power storage device or in-vehicle load installed in the vehicle, a casing to house the plurality of electrical components and the bus bar, and an insulating heat dissipation member thermally connected to the bus bar and the casing, with at least two of the plurality of electrical components being disposed adjacent to each other, and the bus bar dissipating heat from the two electrical components via the heat dissipation member.

An electrical wire arrangement structure includes: a base member; and an electrical wire group including four or more electrical wires, wherein the electrical wire group includes a parallel arrangement part fixed in a parallel state by the base member, and in the parallel arrangement part, an average value of sizes between the electrical wires in a central part region in a width direction is larger than an average value of sizes between the electrical wires in both side part regions in a width direction.

A wire harness unit including: a conduction path that conducts electricity between in-vehicle devices; and a cooling tube that cools the conduction path, wherein: the conduction path has a hollow tubular conductor having conductivity, and a tubular first insulating layer covered by the tubular conductor, and the first insulating layer is the cooling tube and configured to circulate a cooling medium therethrough.

Disclosed is a circuit assembly having a novel structure capable of more reliably promoting heat dissipation from a heat generating component, using a short heat transfer path. A circuit assembly includes: a heat generating component that generates heat when energized; a conductive member configured to be connected to a connection portion of the heat generating component; and a cooling component configured to allow a coolant to flow therethrough and is in thermal contact with the conductive member.

A cooled system includes an enclosure having an outer surface and an inner surface comprising a cooled enclosed area, multiple cable brackets thermally coupled to the outer surface of the enclosure, each cable bracket including a first surface conforming to the outer surface of the enclosure and an opening therethrough sized to hold a cable and conduct heat from the cable to the outer surface of the enclosure.

A cooled system includes an enclosure having an outer surface and an inner surface comprising a cooled enclosed area, multiple cable brackets thermally coupled to the outer surface of the enclosure, each cable bracket including a first surface conforming to the outer surface of the enclosure and an opening therethrough sized to hold a cable and conduct heat from the cable to the outer surface of the enclosure.