An in-vehicle motor-driven compressor includes a common mode choke coil including an annular core having a through-hole, a first winding and a second winding wound around the core, and an annular conductor. The second winding is opposed to the first winding while being spaced apart from the first winding. The conductor surrounds the first and second windings, and the core. The conductor includes sections opposed to each other with the through-hole in between. The core is symmetrical with respect to at least one symmetry axis when the through-hole is viewed from the front. The first winding is located on one side of the at least one symmetry axis, and the second winding is located on the other side of the symmetry axis, so that the at least one symmetry axis is located between the first and second windings. The core includes an exposed section not covered with the conductor.

A reactor including: an assembly that includes a coil and a magnetic core; a case in which the assembly is accommodated; a sealing resin with which the case is filled; and a pushing plate accommodated in the case, wherein the case includes a bottom, a side wall, and at least one groove that is open in an inner surface of the side wall, and the groove of the case includes an opening end provided in an end surface of the side wall of the case that is located opposite to the bottom of the case, and a closed end provided on the bottom of the case with respect to the opening end.

A reactor including: an assembly that includes a coil and a magnetic core; a case in which the assembly is accommodated; a sealing resin with which the case is filled; and a pushing plate accommodated in the case, wherein the case includes a bottom, a side wall, and at least one groove that is open in an inner surface of the side wall, and the groove of the case includes an opening end provided in an end surface of the side wall of the case that is located opposite to the bottom of the case, and a closed end provided on the bottom of the case with respect to the opening end.

A manufacturing method of a reactor includes: a coil mold step of forming a coil mold in which a first resin is molded to cover at least part of a coil; and a main body mold step of forming a main body mold in which a second resin is molded to cover at least part of an assembly body in which the coil, the coil mold, two I-cores, and an O-core surrounding the coil and the coil mold are assembled. In the coil mold step, a gap plate configured to fill a gap between positions where the two I-cores are placed is formed by molding with the first resin. In the main body mold step, gap plates each configured to fill a gap between the O-core and a corresponding one of the I-cores are formed by molding with the second resin.

An inductor includes a bobbin defining a cavity, coils wound around the bobbin, and a plug inserted into the cavity. The plug and bobbin define a first fluid path between an inlet and the cavity. The plug is also arranged to choke flow of fluid through the first fluid path.

The invention comprises a method of: providing an inductor core, placing a winding guide within an inch of the inductor core, positioning a first turn element with the winding guide, positioning a second turn element with the winding guide, and mechanically coupling the first turn element to the second turn element to form at least a part of a winding, the winding forming a wrapped shape about the inductor core. Optionally and preferably, turn elements are subsequently joined, mechanically coupled, and/or welded together to form sections of the winding.

A coil device comprising a pair of coil members annularly assembled at two connecting end portions; each coil member comprising a magnetic core, a resin case substantially entirely surrounding the magnetic core, and a coil wound around the resin case; the resin case having connecting means and guide means in the connecting end portion of each coil member; and the connected coil members being adhered to each other in the connecting end portions.

A vehicle, an inductor assembly for power electronics in a vehicle, and a method of providing and cooling an inductor assembly are provided. According to one example, the vehicle is provided with an inductor assembly in a vehicle electrical system with a variable voltage converter (VVC). The inductor assembly includes a core formed from a plurality of core segments spaced apart from one another to define gaps therebetween, with each of the plurality of core segments forming an internal fluid passage extending therethrough. The inductor assembly has a winding surrounding at least one of the plurality of core segments. A fluid system is connected to the core to provide pressurized fluid to the fluid passages of the plurality of core segments to circulate fluid through the core of the inductor assembly.

A reactor includes: an outer peripheral iron core; three leg iron cores; and three coils, each of the coils having an input side coil end and an output side coil end projecting from a same end surface on an end side in the axial direction of the three leg iron cores, where the three coils include two first coils in which a projecting position of the input side coil end and a projecting position of the output side coil end has a first relative positional relationship and include one second coil having a second relative positional relationship opposite to the first relative positional relationship and where winding directions from the input side coil end to the output side coil end of the first and the second coils are reversed to each other.

A multi-layer coil structure and an inductor are provided. The multi-layer coil structure includes a first coil body and a second coil body. The first coil body includes a first extension portion and a second extension portion extending in a first direction, and at least one third extension portion extending in a second direction. The second coil body includes a fourth extension portion, a fifth extension portion, and at least one sixth extension portion, the fourth extension portion and the fifth extension portion extend in the first direction, and the at least one sixth extension portion extend in the second direction. When the first coil body is detachably assembled with the second coil body, at least one first pin is formed by the first extension portion and the fourth extension portion, and at least one second pin is formed by the second extension portion and the fifth extension portion.