The present disclosure discloses a split type motor, including an air channel and an armature module, wherein the armature module includes a housing, a stator assembly, a rotor assembly, and a printed circuit board (PCB); the housing is cylindrical; the rotor assembly includes a rotating shaft, a magnetic ring, a first bearing, and a second bearing; the housing is provided with a first bearing chamber and a second bearing chamber; an elastic component is arranged between the first bearing and the magnetic ring; the air channel includes an inner ring and an outer ring concentrically arranged; the inner ring encloses and forms a circular through cavity matched with the housing; a ventilation cavity is formed between the inner ring and the outer ring; and several flow guide plates are arranged in the ventilation cavity.

An electric compressor includes a compression part, an electric motor, an inverter device, and a housing. The inverter device includes an inverter circuit, a noise reduction unit, and a circuit board. The noise reduction unit includes a common mode choke coil and a smoothing capacitor. The common mode choke coil includes an annular core, a pair of winding wires, and an annular electrical conductor. The electrical conductor is split into a first metal plate and a second metal plate in a circumferential direction. The first metal plate is thermally coupled to the housing. The second metal plate is electrically connected to the first metal plate. An electrical resistance value of the first metal plate is larger than that of the second metal plate.

An electric compressor includes a compression part, an electric motor, an inverter device, and a housing. The inverter device includes an inverter circuit, a noise reduction unit, and a circuit board. The noise reduction unit includes a common mode choke coil and a smoothing capacitor. The common mode choke coil includes an annular core, a pair of winding wires, and an annular electrical conductor. The electrical conductor is split into a first metal plate and a second metal plate in a circumferential direction. The first metal plate is thermally coupled to the housing. The second metal plate is electrically connected to the first metal plate. An electrical resistance value of the first metal plate is larger than that of the second metal plate.

A power supplying-side terminal (38) has a power supplying-side hanging portion (38H) extending toward a surface of the circuit board (31), a power supplying-side extending portion (38E) bent from the power supplying-side hanging portion (38H) and extending outwards along the surface of the circuit board (31) and a power supplying-side standing portion (38S) bent from the power supplying-side extending portion (38E) and extending in a direction away from circuit board (31). A power receiving-side terminal (39) has a power receiving-side extending portion (39E) extending outwards along the surface of the circuit board (31) and a power receiving-side standing portion (39S) bent from the power receiving-side extending portion (39E) and extending in the direction away from circuit board (31). The power supplying-side standing portion (38S) and the power receiving-side standing portion (39S) overlap each other, and connected to each other so as to have electrical continuity.

A power supplying-side terminal (38) has a power supplying-side hanging portion (38H) extending toward a surface of the circuit board (31), a power supplying-side extending portion (38E) bent from the power supplying-side hanging portion (38H) and extending outwards along the surface of the circuit board (31) and a power supplying-side standing portion (38S) bent from the power supplying-side extending portion (38E) and extending in a direction away from circuit board (31). A power receiving-side terminal (39) has a power receiving-side extending portion (39E) extending outwards along the surface of the circuit board (31) and a power receiving-side standing portion (39S) bent from the power receiving-side extending portion (39E) and extending in the direction away from circuit board (31). The power supplying-side standing portion (38S) and the power receiving-side standing portion (39S) overlap each other, and connected to each other so as to have electrical continuity.

A motor includes a motor control circuit having a ground terminal, and a current limiting part disposed on a path electrically connecting the ground terminal and an external ground terminal included in an external circuit disposed outside the motor.

A motor includes a motor control circuit having a ground terminal, and a current limiting part disposed on a path electrically connecting the ground terminal and an external ground terminal included in an external circuit disposed outside the motor.

Installation workability of a motor system 1 is improved and occurrence of a communication error between an inverter 50 and an electric portion 83 of an electric oil pump 80 due to entry of noise can be suppressed.

A motor portion 2 and the inverter 50 are adjacent to each other in a motor axial direction, at an adjacent portion, a wall of a casing of the inverter 50 on an arrow A direction side and a wall of a casing of the motor portion 2 on an arrow B direction side are shared as a barrier 3b made of the same member, and in a position that a pump portion 81 side of the electric oil pump 80 including a pump portion 81, an internal motor 82, and an electric portion 83 arranged in the motor axial direction faces the arrow A direction side, the electric oil pump 80 is disposed in the casing of the motor portion 2 and the inverter 50.

A vehicle drive device includes: a rotary electric machine including a coil end around a rotation shaft on an end face in a rotation shaft direction; a cover that covers the end face; and a plate-shaped member that is fixed to a back surface of the cover and that faces at least a part of the coil end, in which the cover includes one or more first ribs extending outward from the rotation shaft in a front view of the end face, and in which the plate-shaped member extends along a direction orthogonal to a direction in which the one or more first ribs extend.

A rotating electrical machine includes a housing to house a stator. The housing includes a cylindrical portion including an inner circumferential surface to face an outer circumferential surface of the stator. The cylindrical portion includes a cooling water channel therein. The cooling water channel includes a main water channel extending in a circumferential direction of the cylindrical portion in a zig-zag manner, and bypass water channels interconnecting the main water channel. Preferably, the bypass water channels are provided at end portions of the main water channel at both axial end regions of the cylindrical portion, the main water channel has a width which is greater than a thickness of the main water channel, and the bypass water channel has a width which is smaller than the width of the main water channel.