The magnetic poser unit (100) comprises a magnetic core (10) including a first, a second and a third winding channels (2a, 2b, 2c) respectively arranged around a first, a second and a third crossing axis (A-A, B-B, C-C) orthogonal to each other, each of said winding channels (2a, 2b, 2c) being intended for receiving one coil wound around the magnetic core (10), each coil having at least one turn. The crossing axis (A-A, B-B, C-C) define orthogonal planes providing eight octants, each including a protrusion defining a protruding spacer (20), being spaced to each other by said winding channels (2a, 2b, 2c). The magnetic core (10) is a composed core formed by several different partial magnetic cores assembled together including two side partial magnetic cores (12), each including four protruding spacers (20). The magnetic core (10) further includes a through hole (30) housing a device for heat dissipation (50).

The magnetic poser unit (100) comprises a magnetic core (10) including a first, a second and a third winding channels (2a, 2b, 2c) respectively arranged around a first, a second and a third crossing axis (A-A, B-B, C-C) orthogonal to each other, each of said winding channels (2a, 2b, 2c) being intended for receiving one coil wound around the magnetic core (10), each coil having at least one turn. The crossing axis (A-A, B-B, C-C) define orthogonal planes providing eight octants, each including a protrusion defining a protruding spacer (20), being spaced to each other by said winding channels (2a, 2b, 2c). The magnetic core (10) is a composed core formed by several different partial magnetic cores assembled together including two side partial magnetic cores (12), each including four protruding spacers (20). The magnetic core (10) further includes a through hole (30) housing a device for heat dissipation (50).

A coil component includes a body having both end surfaces opposing each other in a length direction; a support substrate disposed in the body; a coil portion disposed on the support substrate in a width direction of the body, and including first and second lead-out portions each exposed to a first surface and a second surface of the body opposing each other in a thickness direction of the body, respectively, and disposed on the support substrate; and first and second external electrodes disposed on the first surface of the body, spaced apart from each other, and connected to one ends of the first and second lead-out portions exposed to the first surface of the body, respectively.

A reactor includes an assembly, stored in a case, including a coil and a magnetic core; an insertion member, having a type A durometer hardness of 50 or higher, that is stored side-by-side with the assembly; and a sealing resin portion that fills the case. The case includes a bottom portion and a side wall portion. The insertion member includes a leading end portion separated from the bottom portion via a gap. A space formed between the assembly and the case and between the insertion member and the case includes a first region provided between the bottom portion and the leading end portion and a second region that is a region other than the first region. The sealing resin portion includes a first resin portion that fills the first region and a second resin portion that fills at least a portion of the second region.

A reactor includes an assembly, stored in a case, including a coil and a magnetic core; an insertion member, having a type A durometer hardness of 50 or higher, that is stored side-by-side with the assembly; and a sealing resin portion that fills the case. The case includes a bottom portion and a side wall portion. The insertion member includes a leading end portion separated from the bottom portion via a gap. A space formed between the assembly and the case and between the insertion member and the case includes a first region provided between the bottom portion and the leading end portion and a second region that is a region other than the first region. The sealing resin portion includes a first resin portion that fills the first region and a second resin portion that fills at least a portion of the second region.

A gradient coil having a coil body made from a cured casting compound and at least one cooler embedded in the casting compound, serving to conduct a fluid coolant, wherein the cooler and the casting compound do not adhere to each other.

A wound core equipped with a laminated body including plural electrical steel sheets stacked in a ring shape in side view. The laminated body includes plural bent portions, and plural block-shaped portions at positions between adjacent bent portions. At least one block-shaped portion among the plural block-shaped portions includes a heat transmission path bordered by the electrical steel sheets at least at a portion between the stacked electrical steel sheets. The heat transmission path is included only at the at least one block-shaped portion.

A wireless charging apparatus according to an embodiment may improve both the charging efficiency and the heat dissipation characteristics by use of a three-dimensional structure in a magnetic portion. In detail, the wireless charging efficiency may be increased and heat generated from the magnetic portion may be lowered by increasing the thickness of the magnetic portion near a coil portion, where electromagnetic energy is concentrated during wireless charging, and by reducing the thickness of the magnetic portion in the center, where the density of the electromagnetic energy is relatively low. Accordingly, the wireless charging apparatus can be efficiently used in a mobile means such as an electric vehicle that requires transmission of a large amount of power between a transmitter and a receiver.

A thermal conductive compound for sealing a power transformer assembly and a power transformer assembly, the thermal conductive compound having a silicone resin and fillers. The fillers at least include a first filler, or main filler, and a second filler. The first filler is a natural mineral filler including finely divided quartz, quartzite, marble, sand and/or calcium carbonate. The second filler includes a given amount of aluminium hydroxide lowering linear expansion coefficient and increasing the thermal conductivity of the silicone resin.

A thermal conductive compound for sealing a power transformer assembly and a power transformer assembly, the thermal conductive compound having a silicone resin and fillers. The fillers at least include a first filler, or main filler, and a second filler. The first filler is a natural mineral filler including finely divided quartz, quartzite, marble, sand and/or calcium carbonate. The second filler includes a given amount of aluminium hydroxide lowering linear expansion coefficient and increasing the thermal conductivity of the silicone resin.