A DC power supply device includes a housing including a wall portion, a first opening and a second opening, a circuit portion, a regulation wall portion, and a fan. The first and second openings are formed in the wall portion. The circuit portion includes first and second circuit elements those fixed within the housing. The regulation wall portion provide a first air passage in communication with the first opening, a second air passage in communication with the second opening, and a bent air passage allowing the first air passage and the second air passage to communicate with each other. The fan is configured to generate an air-flow flowing between the first air passage and the second air passage. The fan is positioned to face the first opening. The first circuit element is positioned in the first air passage. The second circuit element is positioned in the second air passage.

Disclosed is a modular housing for drivers used for LED lamps. The housing includes connectors for AC in from a power source, DC out to the lamps, and also has connectors allowing for control lines to be received from a control box. The housing includes an arrangement for creating two opposite stacks of drivers. The fronts of the drivers are cooled by circulating air through the space between the stacks, and heat is also dissipated through the side walls of the housing, which acts as a heat sink. The number and specifications of the drivers in the housing are configured such that every module is able to serve a number of LED lamps.

A motor control device includes a power converter that supplies a three-phase voltage to two motors being connected in parallel, a three-phase power line that connects between one of the two motors and the power converter, a branch three-phase power line that connects between the other of the two motors and the power converter, a switching device having two switches that are provided on the branch three-phase power line, a current detection device that detects three-phase currents flowing in the two motors, and a controller. The controller performs a failure determination of the switching device by identifying a phase of a power line in which no current flows in the three-phase power line and the branch three-phase power line, and, when a failure is detected in one of the two switches in the failure determination, controls to change a state of the other switch, which operates normally, to coincide with a state of the failed switch.

An uninterruptible power supply (UPS) includes: a housing defining an interior space; a door operatively connected to the housing, the door being configured to be selectively opened and closed for accessing the interior space of the housing; san electrical system enclosed within the housing; at least one liquid cooling device mounted to a target component of the UPS disposed within the housing for cooling thereof, the at least one liquid cooling device defining a fluid conduit for circulating fluid therethrough; and a pumping module including at least one pump fluidly connected to the at least one liquid cooling device for circulating fluid therethrough, each of the at least one pump and the fluid conduit of the at least one liquid cooling device defining in part a liquid cooling circuit, the pumping module being mounted to the door and disposed on an exterior side thereof.

A stationary part for an inductive power transfer pad that, in an embodiment, comprises: an electronic section including an electronic housing; a receiving section for a movable part of the inductive power transfer pad; a cooling channel predominantly or solely running through the receiving section and having a first end and a second end both being connected to an interior of the electronic housing; a first fan placed within the cooling channel or at the first or second end, or beneath the first or second end of the cooling channel, wherein, when the fan is operating, air from the interior of the electronic housing can be transported through the cooling channel, heat can be transferred from the air to a structural member of the receiving section so that the air cools down, and cooled-down air can be transported back to the interior of the housing.

A power transmitter includes a transmitter antenna includes at least one coil configured to transmit the power signal to the power receiver, the at least one coil and a shielding comprising a ferrite core and defining a cavity, the cavity configured such that the ferrite core substantially surrounds all but the top face of the at least one coil. The power transmitter includes a housing configured for housing, at least, the transmitter antenna. The housing defines an airflow opening configured to provide an airflow to a first airflow channel and to a second airflow channel. The first and second airflow channels configured to provide the airflow to one or more of a top face of a mobile device thereon and a bottom face of the mobile device.

A power conversion system includes a housing (outer housing) and a power converter. The power converter is arranged in an internal space of the housing. An outer peripheral surface of the housing is provided with an air inlet and an air outlet. The air outlet communicates with the air inlet via the internal space of the housing and is located below the air inlet.

A seat ventilation blower may include a first housing; a second housing coupled and assembled to the first housing; an impeller inserted inside the first housing or the second housing, the impeller configured to rotate; and a circuit board body having a motor assembly coupled to the impeller to rotate the impeller wherein the circuit board body is configured to control operation of the motor assembly and installed in the housing when the first and second housings are coupled and assembled together.

The present disclosure relates to the field of power electronics technology, and proposes a power module, including: a case and an isolating part disposed in the case; a first air duct and a second air duct stacked to each other, separated by the isolating part, and penetrated in a front-to-rear direction in the case; a high-voltage power unit; a low-voltage power unit; and a transformer, including a high-voltage portion and a low-voltage portion, wherein the high-voltage portion includes a first magnetic core and a high-voltage coil disposed on the first magnetic core, and the low-voltage portion includes a second magnetic core and a low-voltage coil disposed on the second magnetic core, wherein the high-voltage power unit and the high-voltage portion are disposed in the first air duct, and the low-voltage power unit and the low-voltage portion are disposed in the second air duct.

A heat dissipating system and a power cabinet are provided. The heat dissipating system includes a cabinet, a first circulating fan and a heat exchanger. The cabinet has an outer circulating air duct and a sealed inner circulating air duct. The air inlet and the air outlet connected to the outside are arranged in the outer circulating air duct, and the heat exchanger is arranged in the cabinet and configured to exchange heat between the inner circulating air duct and the outer circulating duct. The first circulating fan is arranged outside the air inlet of the outer circulating air duct or arranged inside the outer circulating air duct, and configured to supply air to the outer circulating air duct. The heat dissipation efficiency of the inner circulating air duct is improved.