Abstract: A power controller for an electric vehicle may include: an input terminal connected to a DC power source; a first inverter connected to the input terminal and configured to convert power of the DC power source to driving power for a first electric motor for propulsion; a second inverter connected to the input terminal and configured to convert the power of the DC power source to driving power for a second electric motor; and a switch configured to electrically disconnect the second inverter from the first inverter and the input terminal.

Abstract: With respect to a stack unit in which a plurality of power cards and a plurality of coolers are stacked, each of the plurality of power cards housing semiconductor element, a technique for improving the fitting of a stack unit to a housing is taught. A stack unit is a unit that coolers and power cards are stacked. An outer frame binds a stack of the power cards and the coolers. The outer frame pressurizes the stack along with the stacked direction. Each of the coolers comprises a main body and a metal plate. The main body includes a flow channel of coolant and an opening provided at a position facing the power card. The metal plate has one surface closing the opening. A seal between the opening and the metal plate is secured by pressure of the outer frame.

Abstract: With respect to a stack unit in which a plurality of power cards and a plurality of coolers are stacked, each of the plurality of power cards housing semiconductor element, a technique for improving the fitting of a stack unit to a housing is taught. A stack unit is a unit that coolers and power cards are stacked. An outer frame binds a stack of the power cards and the coolers. The outer frame pressurizes the stack along with the stacked direction. Each of the coolers comprises a main body and a metal plate. The main body includes a flow channel of coolant and an opening provided at a position facing the power card. The metal plate has one surface closing the opening. A seal between the opening and the metal plate is secured by pressure of the outer frame.

Abstract: A power conversion apparatus includes a refrigerant supply and discharge portion and a laminated body. The refrigerant supply and discharge portion performs supply and discharge of refrigerant with respect to the cooler. The refrigerant supply and discharge portion is placed on a first end face of the laminated body, the first end face intersecting with a first vertical direction vertical to a laminating direction in the laminated body. One of the terminal portion and the electrode terminal of the semiconductor module is placed on a second end face of the laminated body, the second end face intersecting with the first vertical direction.

Abstract: A vehicle disc brake device for preventing snow, ice, and mud from adhering to a caliper includes a body-anchoring part provided in a cylinder of a caliper, the body-anchoring part for securing a wire guide used to support a brake wire. The body-anchoring part has a first surface oriented along the longitudinal direction of the brake wire, and a second surface located on the side opposite the first surface. A wire-guide-anchoring part is secured to the second surface. The first surface is a flat, inclined surface.

Abstract: A vehicle disc brake device for preventing snow, ice, and mud from adhering to a caliper includes a body-anchoring part provided in a cylinder of a caliper, the body-anchoring part for securing a wire guide used to support a brake wire. The body-anchoring part has a first surface oriented along the longitudinal direction of the brake wire, and a second surface located on the side opposite the first surface. A wire-guide-anchoring part is secured to the second surface. The first surface is a flat, inclined surface.

Abstract: An annular inward turned flange and a plurality of ribs are integrally molded on an inner peripheral surface of an cylindrical portion formed at an upper portion of a reservoir for a master cylinder. The ribs extend from a lower surface of the flange and are disposed in a distributed manner in a circumferential direction of the flange. An annular flat surface area is formed on an upper surface of the flange, and a tip end of a working oil filler is placed into close contact with the annular flat surface area. Thus, when a working oil is filled under pressure into the master cylinder and its output hydraulic pressure circuit through the reservoir by the working oil filler, the urging force from the working oil filler can be reliably supported, and the deformation of the reservoir by a filling pressure cannot be produced.