A wireless device charger configured to produce an alternating magnetic field, thereby inducing an alternating electrical current within a capture coil of a personal electronic device proximate to the wireless device charger, said wireless device charger includes a source coil having a ferrite element configured to generate the alternating magnetic field, a housing formed of a thermally conductive material in thermal communication with the ferrite element, and an air movement device configured to produce an air flow across a surface of the housing flowing from an air inlet to an air outlet, thereby reducing a housing temperature. The surface of the housing defines a plurality of fins extending along the housing in a direction of the air flow. At least one fin in the plurality of fins has a non-symmetric surface, thereby creating turbulence in the air flow.

A cold plate and a method of manufacturing a cold plate involve a first side with a first surface, and a second side, opposite the first side, with a second surface opposite the first surface. The cold plate includes a flow channel formed between the first side and the second side, and a cavity integrally machined into the first surface of the first side. The cavity seats an inductor and is defined by an outer wall and a base with thicker sections and thinner sections such that even the thicker sections of the base are thinner than a thickness of the first surface.

An electrical transformer system includes an electrical transformer and a depressurization system in fluid communication with an outlet of the electrical transformer. The depressurization system may include a rupture disk having a downwardly facing domed portion extending toward the outlet of the electrical transformer. The domed portion has an apex and a base with a retention portion surrounding the domed portion adjacent the base. A score line network extends circumferentially around the domed portion adjacent the base and spaced apart from the apex. The score line network includes a plurality of serrated score line segments and a plurality of hinge score line extending from the score line segments towards the apex of dome portion. The rupture disk may be interested into a housing assembly with a removable cover.

An electronic device for improving heat transfer is provided. The electronic device includes a housing, a display mounted on at least one surface of the housing, a battery, a supporting member disposed adjacent to a back surface of the display and supporting the display, a printed circuit board on which electronic components are mounted, a shield can surrounding at least a portion of the electronic components, a shielding structure disposed on an outer surface of the shield can to shield the electronic components, and a first heat transfer member disposed on an outer surface of the shielding structure and including a partial area that faces at least one electronic component among the plurality of electronic components mounted on the printed circuit board and another partial area that is bent and faces another electronic component among the plurality of electronic components mounted on the printed circuit board.

Radiator for a transformer comprising a plurality of radiator panels with at least a first and a second radiator panel extending in a substantially vertical direction, wherein the first and the second radiator panel form an air duct providing a gap there-between having a width of smaller than 90 mm, and wherein a first radio panel bottom edge is located at a lower vertical height position than a second radiator panel bottom edge, wherein the first radiator panel is located at a side of the radiator panel such that the first radiator panel and a transformer side form a transformer air duct wherein the second radio panel bottom edge is located at a larger height than the first radio panel bottom edge and wherein the radiator panels have an aspect ratio greater than 8 of a depth of the radiator panel over a width of the air duct.

A reactor includes an assembly of a coil and a magnetic core; a case; and a sealing resin portion filling the case and sealing at least a portion of the assembly. The case has an inner bottom surface, and a pair of coil facing surfaces that face side surfaces of the coil. The pair of coil facing surfaces have inclined surfaces that incline away from each other in a direction from the inner bottom surface side to an opposite side to the inner bottom surface. The coil includes a first winding portion disposed on the inner bottom surface side, 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 in a vertical arrangement and are parallel with each other. The second winding portion is wider than the first winding portion.

A box-shaped inner case (3) is accommodated in a box-shaped outer case (2), and refrigerant flow passages (27) are formed at five surfaces except an opening surface (24) by gaps between the inner and outer cases. A Gap of an opening edge of the outer case (2) and an opening edge of the inner case (3) is covered with a frame-shaped cover (6). A coil (4) is placed in the inner case (3), and the inner case (3) is filled with magnetic powder mixture resin so that the coil (4) except the terminals (4a, 4b) is embedded. A core (5) is made of the magnetic powder mixture resin. Cooling water flows along a longitudinal direction of the outer case (2) with one of refrigerant pipe connecters (15) being a refrigerant inlet and the other of the refrigerant pipe connecters (15) being a refrigerant outlet.

A method for drying a transformer which has a multistage cooling system, in particular a power transformer or a choke, has at least one transformer winding and at least one insulator for electrical insulation. Individual cooling stages of the cooling system are respectively associated with a loading state range of the transformer and are activated when the respective loading state range of the transformer is reached. The loading state range is a function which depends at least on a temperature of the transformer. The drying method is carried out during the operation of the transformer. An upper cooling stage, which lies above the lowest cooling stage, is or remains deactivated and the cooling stage which is situated directly below the upper cooling stage is or remains activated while the transformer is in the loading state range which is associated with the upper cooling stage.

The present disclosure provides a power module and a manufacturing method thereof. The power module includes a substrate, an electronic component, a magnetic component and an encapsulation layer. The substrate includes a first surface and a second surface opposite to each other, and a working region. The working region is disposed on the first surface or the second surface. The electronic component is disposed on the substrate. The magnetic component is disposed on the working region and includes a lateral periphery. The encapsulation layer is disposed on the substrate, covers the electronic component and at least partially surrounds the lateral periphery of the magnetic component. A projection of the encapsulation layer on the first surface of the substrate is not overlapped with a projection of the working region on the first surface, and a gap is formed between the encapsulation layer and the lateral periphery of the magnetic component.

A reactor unit is equipped with a reactor and a cooler. A coolant flows through an interior of the cooler. The cooler cools the reactor through radiation of heat to the coolant. The reactor is mounted on an upper surface of an upper plate of the cooler. A lower surface of the reactor faces the upper plate of the cooler. An upper surface of the reactor is covered with a metal plate. The metal plate is thermally in contact with the upper surface of the upper plate of the cooler.