摘要:
A junction body has a first member and a second member each of which is provided with a joining surface whose main component is copper. A solder member containing, in a tin-base solder material, a three-dimensional web structure whose main component is copper is provided between the first member and the second member. A copper-tin alloy whose average thickness is 2 μm or more but 20 μm or less is provided between the joining surfaces and the three-dimensional web structure.
摘要:
A driving apparatus includes: a rotating electrical machine; an inverter capable of supplying electric power to the rotating electrical machine; an electrical device connected to the inverter; a containing case capable of containing the rotating electrical machine, the inverter, and the electrical device; and a cooling coolant circulation circuit, distributing cooling coolant capable of cooling the inverter and the electrical device, which allows the inverter to be cooled at an upstream side relative to the electrical device in a direction in which the cooling coolant is distributed.
摘要:
A radiator having a radiator fin sandwiched between and joined to a top plate and a bottom plate is provided on an insulating substrate, which has a semiconductor element arranged on one face side thereof, on the other face side thereof. The radiator fin is a corrugated fin that includes a first region that includes a joint peak portion joined to the bottom plate and has a height in an amplitude direction which is substantially equal to a distance between the top plate and the bottom plate, and a second region that includes a non-joint peak portion separated from the bottom plate by a predetermined gap and has a height in the amplitude direction which is smaller than the distance between the top plate and the bottom plate.
摘要:
A semiconductor element cooling structure includes first and second semiconductor elements; a heat sink having a mounting surface on which the semiconductor elements are mounted and a cooling medium channel formed inside, through which a cooling medium for cooling the semiconductor elements flows; and a protruded portion provided at a position opposite to the mounting surface of the heat sink, extending in a direction intersecting flow direction of the cooling medium (direction of arrow DR1) and protruding from a bottom surface of the cooling medium channel to the inside of cooling medium channel. The semiconductor elements are arranged side by side in the direction of arrow DR1, such that the first semiconductor element is positioned upstream side than the second semiconductor element. A protruded portion for the second semiconductor element is provided to be positioned on the downstream side of first semiconductor element and upstream side than the center of second semiconductor element in the direction of arrow DR1.
摘要:
A vehicle drive system includes a battery, motor generators driving the vehicle using electric power from the battery or driven by the vehicle, a PCU integrated with the motor generators, having inverters and controlling the motor generator, cooling water cooling inverters, and oil cooling motor generators. The PCU includes a smoothing capacitor and a filter capacitor provided electrically closer to the battery than the smoothing capacitor. Here, the smoothing capacitor is cooled by the cooing water, while the filter capacitor is cooled by the oil.
摘要:
A driving gear of a vehicle comprising a motor generator (MG2), a power control unit (21) for controlling the motor generator (MG2), and a case for containing the motor generator (MG2) and the power control unit (21). The power control unit (21) comprises a first inverter for driving the motor generator (MG2), and a voltage converter for applying power supply voltage to the first inverter after stepping it up. The voltage converter includes a reactor (L1). Heat of the reactor (L1) is dissipated using lubricant touching the reactor (L1) and the case as heat transfer agent. A circulation path of lubricant is formed in the case and the reactor is arranged on the circulation path.
摘要:
A water pump includes an impeller; an impeller shaft around which the impeller rotates; a first bearing portion that supports one end of the impeller shaft; a second bearing portion that supports the other end of the impeller shaft; a housing portion in which the impeller is inserted; and an upper housing including attachment holes provided at equal intervals in a circumferential direction, which are used to attach the upper housing to the housing portion, and a discharge port from which coolant is discharged.