Abstract: An assembly includes at least one electronic component, a bus bar electrically connected to the electronic component and having a connection portion, a case receiving both the electronic component and the bus bar and having first and second openings, and a drop prevention member having a drop prevention wall. The connection portion of the bus bar is to be connected with a terminal of an external connector by engaging a first engaging member to be placed inside the case through the first opening and a second engaging member provided in the external connector. In the assembly, there is defined, by the drop prevention wall, the connection portion of the bus bar, and part of the external connector, a confinement space for confining the first engaging member and thereby preventing it from dropping outside the confinement space during establishment of the engagement between the first and second engaging members.

Abstract: An assembly includes at least one electronic component, a bus bar electrically connected to the electronic component and having a connection portion, a case receiving both the electronic component and the bus bar and having first and second openings, and a drop prevention member having a drop prevention wall. The connection portion of the bus bar is to be connected with a terminal of an external connector by engaging a first engaging member to be placed inside the case through the first opening and a second engaging member provided in the external connector. In the assembly, there is defined, by the drop prevention wall, the connection portion of the bus bar, and part of the external connector, a confinement space for confining the first engaging member and thereby preventing it from dropping outside the confinement space during establishment of the engagement between the first and second engaging members.

Abstract: An electric power conversion apparatus is provided which includes electronic components, a cooler, an internal unit, a capacitor, and a case. The internal unit has a frame to which at least one of the electronic components and the cooler are secured and which surrounds all around the one of the electronic components. The frame includes unit fixing sections through which the internal unit is fixed to the case and capacitor fixing sections through which the capacitor is fixed to the internal unit. The capacitor fixing sections are located inward of the frame more than the unit fixing sections. The internal unit is fixed to the case and thus works as a beam to increase the mechanical rigidity of the case. The fixing of the internal unit to the case minimizes external force to be exerted through the case on the electronic component and the cooler.

Abstract: In a power conversion apparatus, electronic components and a cooler are integrated in a frame as an internal unit. The internal unit is fixed within a case through the frame. The frame has such a shape that the electronic components are surrounded by the frame, and includes a first wall section, and second and third wall sections extending from both sides of the first wall section. The cooler includes a coolant introduction tube and a coolant discharge tube. The coolant introduction tube and the coolant discharge tube project outward from to the frame. The first to third wall sections include a support wall section supporting at least one of the coolant introduction tube and the coolant discharge tube, and a frame wall section not supporting the coolant introduction tube and the coolant discharge tube. The thickness of the support wall section is larger than the thickness of the frame wall section.

Abstract: A power conversion apparatus includes electronic components configuring a power conversion circuit, a cooler for cooling at least part of the electronic components, and a case housing the electronic components and the cooler. The at least part of the electronic components and the cooler are fixed to and integrated in a frame as an internal unit. The internal unit is fixed within the case through the frame. The frame has such a shape that the at least part of the electronic components is surrounded by the frame from four sides.

Abstract: The power conversion apparatus includes electronic components constituting a power conversion circuit, a cooler for cooling at least some of the electronic components, and a case housing the electronic components and the cooler. The at least some of the electronic components and the cooler are fixed to and integrated in a frame as an internal unit . The internal unit including therein the semiconductor modules also includes a control circuit board fitted to board fixing sections formed in the frame so as to project from the frame in the height direction perpendicular to the plane of the frame. Each of the board fixing sections has a board abutment surface at a position closer to the frame than the tips of control terminals of the semiconductor modules formed so as to project in the height direction.

Abstract: The power conversion apparatus includes electronic components constituting a power conversion circuit, a cooler for cooling at least some of the electronic components, and a case housing the at least some of the electronic components and the cooler. The at least some of the electronic components and the cooler are fixed to and integrated in a frame as an internal unit. The frame has such a shape that at least some of the electronic components constituting the internal unit are disposed inside the frame. The frame includes a terminal block on which input/output terminals for inputting and outputting controlled power are mounted for providing connection between the input/output terminals and external devices.

Abstract: A reactor is provided with a coil, a core, and a case. The coil generates magnetic flux in response to supply of current thereto. The core is made of magnetic powder-containing resin filled in spaces inside and outside of the core. The case accommodates therein the coil and the core. The reactor is also provided with a cooling pipe (cooling member), which is arranged to be in contact with the core. A power converter is provided with semiconductor modules, a cooler, and the reactor. In the power converter, the cooler is arranged partially being in contact with the core of the reactor.