Embodiments of the present disclosure include an apparatus having a band including a high thermally conductive material is disposed at least partially around an inductor.

To obtain a transformer that can easily cope with various input voltage specifications and that has improved productivity. A transformer includes: a core portion for forming a magnetic circuit; a primary winding and a secondary winding wound at the core portion; and a first connection portion having a plurality of first conductive parts arranged with an insulation interval therebetween. One or both of the primary winding and the secondary winding are divided into a plurality of division windings, and each of the plurality of division windings of the at least one divided winding has a wound part wound at the core portion, and two extending members extending from both ends of the wound part. The first connection portion is connected to one of the two extending members of each of the plurality of division windings of the at least one divided winding.

A wireless charging coil structure with a function of heat dissipation comprises a first connecting terminal, a second connecting terminal and a coil. The coil is disposed between the first connecting terminal and the second connecting terminal, and configured to transmit a signal between the first connecting terminal and the second connecting terminal. The coil comprises a heat-pipe segment and a transmission segment electrically and heat-conductively connected with each other. The transmission segment has a predetermined thickness, the heat-pipe segment encircles an accommodating space, and a heat-dissipating medium is disposed in the accommodating space.

A conductive winding arrangement for generating a varying magnetic field in the neighborhood of the winding arrangement, comprising a plurality of coil pairs arranged one after another along a sequence axis with a virtual coil pair winding axis oriented transversely to the sequence axis, of which each coil pair exhibits a first coil and a second coil, each with a coil winding axis parallel or collinear respectively to the coil pair winding axis, where the first and the second coil are arranged axially adjacent to each other relative to the coil pair winding axis in such a way that turns of the first and of the second coil are axially adjacent to each other and that eye regions of the first coil and of the second coil are axially adjacent to each other while forming a common coil-pair eye region, where the coil pair winding axis penetrates through the coil-pair eye region; at least one coil pair being configured as a single conductor coil pair, in which the first and the second coil each exhibit a connecting section located radially outside relative to the coil pair winding axis for connecting to a phase of a power supply or to a further coil and in the coil-pair eye region they are connected to each other electroconductively.

An arrangement (10, 20, 30) id disclosed, comprising a magnetic element (10) and at least a first winding (10) and a second winding (20), wherein each of the first winding (20) and the second winding (30) is wound in a plurality of turns (41, 42, 43, 44, 51, 52, 53, 54) around at least a portion of the magnetic element (10), and wherein at least a part or portion of the plurality of turns (51, 52, 53, 54) of the second winding (30) wound around the at least a portion of the magnetic element is arranged in spaced relation to at least a part or portion of the plurality of turns (41, 42, 43, 44) of the first winding (20) wound around the at least a portion of the magnetic element (10), thereby defining at least one gap (61, 62) between the at least a part or portion of the plurality of turns (51, 52, 53, 54) of the second winding (30) and the at least a part or portion of the plurality of turns (41, 42, 43) of the first winding (20). At least the magnetic element (10) and the first winding (20) and the second winding (30) define an assembly of the arrangement (10, 20, 30), and wherein at least a part or portion of the assembly is arranged so as to be embedded in a thermally conductive material (70) and such that at the same time a flow of air in the at least one gap (61, 62) is permitted.

A reactor includes an assembly of a coil and a magnetic core; a case that houses the assembly; and a sealing resin portion that seals a portion of the assembly. The reactor further includes a heat dissipation member interposed between the coil and the case. The case has an inner bottom surface and the pair of coil facing surfaces have inclined surfaces that are inclined away from each other. The coil includes a first winding portion and a second winding portion disposed opposite of the inner bottom surface with respect to the first winding portion. The first winding portion and the second winding portion are parallel with each other, and have the same width. The heat dissipation member includes a first heat dissipation portion interposed between at least one of the inclined surfaces and the second winding portion.

The isolation transformer includes two kinds of winding, a high voltage side winding and a low voltage side winding, and the high voltage side winding and the low voltage side winding are formed in winding layers, wherein the high voltage side winding includes windings formed in multiple winding layers, a winding layer having a different number of turns exists in one or more kinds of the two kinds of winding among the windings formed in the multiple winding layers, winding layers wherein current flows in the same direction are stacked in such a way as not to be neighboring, and at least one of winding layers having the greatest number of turns is disposed as a layer other than an outermost layer.

A support structure is configured to be arranged at least partially in a space provided between at least two coil segments of a transformer. The support structure comprises an elongated body having at least a first side and a second side. The support structure comprises at least one fluid passage opening provided in at least a section of the elongated body. The at least one fluid passage opening is configured to allow a fluid to pass therethrough from the first side to the second side. A transformer has a support structure arranged in a space between at least two coils segments of the transformer.

A common mode choke (20) for connecting to DC side of a power converter (100). The common mode choke (20) includes a choke core (21) having a first core portion (21A) and a second core portion (21B) for guiding magnetic flux (F). The common mode choke (20) also includes a first winding (24) and a second winding (25) for generating magnetic flux, wherein both of the windings (24, 25) have series-connected first (24A, 25A) and second portions (24B, 25B), respectively. The first portion (4A) of the first winding (24) and the first portion (25A) of the second winding (25) are concentrically around the first core portion (21A), and the second portion (24B) of the first winding (24) and the second portion (25B) of the second winding (25) are concentrically around the second core portion (21B).

The invention comprises an apparatus, comprising: an inductor, comprising: an inductor core and a winding comprising a wound shape around the inductor core, where the winding comprises a first cross-sectional area at a first longitudinal position along the winding and a second cross-sectional area at a second longitudinal position along the winding, the second cross-sectional area at least twenty percent larger than the first cross-sectional area. Optionally and preferably, the winding includes a first set of cast elements sharing a first geometric shape and a second set of cast elements sharing a second geometric shape, where the alternating members of the first set of cast elements and the second set of cast elements are welded together to form the winding.