Abstract: A cooling structure is provided for a dynamo-electric machine. The cooling structure has a refrigerant supply path for introducing a refrigerant into a rotor, and refrigerant outlets that are opened to the refrigerant supply path so that the refrigerant will be splashed onto the coil ends of a stator as the rotor rotates. Blocking wall members are provided in refrigerant splash paths between the refrigerant outlets and the coil ends for blocking a portion of the refrigerant, which splashes from the refrigerant outlets when the rotor rotates. The rate at which the blocking wall members shield the coil ends against the refrigerant is low when the rotor rotates at a low speed and is high when the rotor rotates at a high speed.

Abstract: A cooling structure is provided for a dynamo-electric machine. The cooling structure has a refrigerant supply path for introducing a refrigerant into a rotor, and refrigerant outlets that are opened to the refrigerant supply path so that the refrigerant will be splashed onto the coil ends of a stator as the rotor rotates. Blocking wall members are provided in refrigerant splash paths between the refrigerant outlets and the coil ends for blocking a portion of the refrigerant, which splashes from the refrigerant outlets when the rotor rotates. The rate at which the blocking wall members shield the coil ends against the refrigerant is low when the rotor rotates at a low speed and is high when the rotor rotates at a high speed.

Abstract: A terminal block for electrically connecting a plurality of first wires connected to an electric motor and a plurality of second wires connected to a power conversion device for supplying drive power of the electric motor includes a case, a plurality of terminals housed in the case and configured to connect the plurality of first wires and the plurality of second wires to each other, a partition wall provided between the plurality of terminals to electrically isolate the plurality of terminals from each other, and plate-like members provided between the partition wall and the terminals and made of a material with a higher elasticity than the case and the partition wall.

Abstract: A cooling structure for an electric motor includes: a motor case that houses a stator and a rotor therein, a groove opened on an end surface in an axis direction of the rotor being formed in the motor case; a motor control circuit attached to the motor case; and a terminal base that closes the groove to constitute the groove as a cooling water passage through which cooling water can flow, the terminal base connecting a power line of the motor to a power line of the motor control circuit.

Abstract: Disclosed is an integrated power electric unit mounted on an electric vehicle, comprising a first power electric unit, a second power electric unit arranged over the first power electric unit in a vertical direction of the vehicle, a channel that connects the first and second power electric units so as to flow the air, and a breather provided in the second power electric unit to cause inner and outer sides of the second power electric unit to communicate with each other.

Abstract: A cooling structure for an electric motor includes: a motor case that houses a stator and a rotor therein, a groove opened on an end surface in an axis direction of the rotor being formed in the motor case; a motor control circuit attached to the motor case; and a terminal base that closes the groove to constitute the groove as a cooling water passage through which cooling water can flow, the terminal base connecting a power line of the motor to a power line of the motor control circuit.

Abstract: Disclosed is an integrated power electric unit mounted on an electric vehicle, comprising a first power electric unit, a second power electric unit arranged over the first power electric unit in a vertical direction of the vehicle, a channel that connects the first and second power electric units so as to flow the air, and a breather provided in the second power electric unit to cause inner and outer sides of the second power electric unit to communicate with each other.

Abstract: A terminal block for electrically connecting a plurality of first wires connected to an electric motor and a plurality of second wires connected to a power conversion device for supplying drive power of the electric motor includes a case, a plurality of terminals housed in the case and configured to connect the plurality of first wires and the plurality of second wires to each other, a partition wall provided between the plurality of terminals to electrically isolate the plurality of terminals from each other, and plate-like members provided between the partition wall and the terminals and made of a material with a higher elasticity than the case and the partition wall.

Abstract: An insulating bobbin for disposition between a stator core and a stator winding of a stator of a rotating machine, the stator winding being wound around the stator core by way of the insulating bobbin, the insulating bobbin comprising a coil end section at which an end portion of the stator winding is disposed, a slot side section forming a slot for winding thereon the stator winding, and a corner section having a curved surface and connecting between the coil end portion and the slot side portion, the corner section having a first radius of curvature at a side closer to the coil end section and a second radius of curvature at a side closer to the slot side section, the second radius of curvature being larger than the first radius of curvature.

Abstract: An insulating bobbin for disposition between a stator core and a stator winding of a stator of a rotating machine, the stator winding being wound around the stator core by way of the insulating bobbin, the insulating bobbin comprising a coil end section at which an end portion of the stator winding is disposed, a slot side section forming a slot for winding thereon the stator winding, and a corner section having a curved surface and connecting between the coil end portion and the slot side portion, the corner section having a first radius of curvature at a side closer to the coil end section and a second radius of curvature at a side closer to the slot side section, the second radius of curvature being larger than the first radius of curvature.