A vehicle inverter terminal sealing arrangement comprising a electrical terminal of said inverter sealed into an inverter and having a distal portion of said terminal protruding external to said inverter, wherein said terminal is sealed into said inverter by means of a resilient peripheral seal, said peripheral seal surrounding a portion said terminal, and said seal being wedged between said terminal and at least one portion of said inverter.

The power conversion device includes: a boost, converter which includes a magnetically-coupled reactor and plurality of semiconductor switching elements connected to the magnetically-coupled reactor; an inverter; a cooler for cooling the magnetically-coupled reactor; a bus bar which is a conductive wiring member; and a current sensor for detecting a magnetic flux generated around the bus bar. The magnetically-coupled reactor includes a first winding, a second winding, and a core for magnetically coupling the first winding and the second winding. The core has a composite magnetic body containing soft magnetic powder and binder, and at least parts of the first winding and the second winding are embedded in the composite magnetic body. The cooler is provided in contact with the magnetically-coupled reactor. The current sensor is provided on a side opposite to the magnetically-coupled reactor with the cooler therebetween.

An assembly structure of a transformer and a circuit board includes: a circuit board, a packaging chip, a transformer, a first conductive plate, a second conductive plate and a first heat sink. The packaging chip is disposed on the circuit board. The transformer has at least one first output electrode and at least one second output electrode connected to the first output electrode. The first conductive plate is disposed on the transformer and connected to the at least one first output electrode. The second conductive plate is disposed on the transformer and connected to the at least one second output electrode and the circuit board. The first heat sink is connected to the packaging chip and the first conductive plate, is disposed on the circuit board, and is connected to the circuit board and the first conductive plate.

A cooling structure including a flow path configuration member made of resin and forming a flow path through which a refrigerant flows, a heat diffuser having a plate shape, including a metal, and being embedded in the flow path configuration member or joined to the flow path configuration member, and one or more cooling fins extending from the heat diffuser into the flow path and having a surface made of resin.

An electric power converter includes a plurality of power modules, a capacitor, a positive bus bar, and a negative bus bar. Each of the power modules includes a positive terminal and a negative terminal on a side facing the capacitor. Leading ends of the positive terminal and negative terminal are parallel to the side. The positive bus bar includes a positive/negative base plate joined to a positive/negative electrode of the capacitor and a positive/negative flange bent from the positive/negative base plate. The positive/negative flange is joined to the positive/negative terminals of the power modules. The positive flange and the negative flange extend in directions away from the capacitor.

A power converter includes a capacitor and a substrate on which a plurality of switching elements for power conversion are mounted. The power converter includes a cooler for cooling the plurality of switching elements and a housing that accommodates the capacitor, the substrate, and the cooler. The power converter includes a power connector exposed from the housing and an output connector exposed from the housing. The power converter includes a plurality of lines that include a plurality of power lines each electrically connected to the capacitor, given switching elements, and the power connector. The plurality of lines include a plurality of output lines each electrically connected to given switching elements and the output connector. At least one among the plurality of lines is a line that includes a conductive pattern formed on the substrate.

An intelligent power module includes: a heat radiation device; an attachment frame disposed on a mounting surface of the heat radiation device; a power semiconductor module mounted on the attachment frame and configured to seal a semiconductor device; and a drive circuit part mounted on the power semiconductor module via a heat insulating sheet and configured to drive the power semiconductor module.

An electric conductive part for a power conversion circuit includes a connection conductive portion and a branch portion. The connection conductive portion is configured to connect a joint portion of a battery with a capacitor that is included in the power conversion circuit. The connection conductive portion includes a path portion, which is configured to connect the joint portion with the capacitor, and a branch portion that branches from the path portion. The branch portion extends toward a control circuit board and is connected with the control circuit board. The control circuit board is configured to control drive of a switch element of the power conversion circuit.

A power conversion apparatus includes a hermetic housing, a power semiconductor module, and dry gas. The hermetic housing includes a gas inlet valve and a gas outlet valve. The power semiconductor module is arranged in an internal space in the hermetic housing. The internal space in the hermetic housing is filled with dry gas.

The parallel assembly of rectifier modules includes a plurality of rectifier modules connected in parallel, a switch for switching-in and switching-out of the rectifier modules, an assembly frame, being provided therein with a switch accommodating space and a rectifier module accommodating space; a DC bus bar, being arranged at the top of the assembly frame; a plurality of groups of connectors, being fixed at one end close to the back side of the assembly frame; an AC copper bar, being fixed at one end close to the front side of the assembly frame; an extended copper bar, being fixed at one end close to the back side of the assembly frame.