A cooling mechanism for a vehicle electric motor. The cooling mechanism includes: a coolant oil passage provided between a rotor core and a rotor shaft of the electric motor; an oil supply passage provided inside the rotor shaft and communicating with the coolant oil passage; and at least one first discharge port and at least one second discharge port provided in respective first and second end plates disposed on respective opposite sides of the rotor core. The coolant oil passage includes a first passage portion communicating with the at least one first discharge port, and a second passage portion communicating with the at least one second discharge port. Each of the at least one first discharge port is located in a position that is different from a position of any one of the at least one second discharge port as seen in an axial direction of the rotor shaft.

A power tool device comprises a housing, a transmission mechanism installed in the housing, and an adapting mechanism deployed with a tool head, a switch member adopted for manipulating the attachment and detachment between the transmission mechanism and the adapting mechanism in a steady and safety manner. Therefore, that the operator only needs to carry a variety of tool heads and a power tool device is ample enough to deal with most of the situations which makes it much easier for the operators to work in a high flexibility and efficiency fashion.

A gear motor includes a motor and a speed reducer. The speed reducer is a magnetic modulation gear. Accordingly, non-contact power transmission by magnetic force is possible, so that the speed reducer does not require a lubricant and the structure can be simplified.

An axial flux motor drive unit for an automobile includes a stator defining a core, an output defining an axis of rotation, a first rotor, a second rotor, and a thrust bearing. The first rotor is rotatable about the axis of rotation and is coupled to the output and disposed relative to the stator to create a first air gap. The second rotor is rotatable about the axis of rotation and is coupled to the output and is disposed relative to the stator to create a second air gap. The thrust bearing is coupled to the output and supports axial loads that are substantially parallel to the axis of rotation, and the first rotor is still rotatable about the axis of rotation when the second rotor is inoperable, and the second rotor is still rotatable when the first rotor is inoperable.

A motor includes a rotor fixed to a rotary shaft, a stator arranged so as to surround the rotor with a gap from the rotor in a radial direction orthogonal to an axis direction of the rotary shaft, and a case accommodating the rotor and the stator. The rotor includes a plurality of rotor cores made from a soft magnetic material, and a rotor fixing member that fixes the rotor cores. The stator includes a plurality of stator cores made from a soft magnetic material, a stator fixing member that fixes the stator cores, and coils wound around the stator cores, respectively. The motor includes at least two sets of the rotor and the stator, and the sets are stacked in an axis direction of the rotary shaft.

The present disclosure discloses an electric assembly and a vehicle having the same. The electric assembly includes: a box assembly; a motor, disposed in the box assembly; a transmission, disposed in the box assembly, where the transmission is power-coupled to the motor; and a controller, disposed outside the box assembly, and fixedly connected to the box assembly.

The invention relates to an inverter, notably configured to be on-board an automobile vehicle, comprising: power components configured to convert DC electrical energy into AC electrical energy so as to supply an electric motor, notably configured to drive the vehicle, a casing housing the components of the inverter and comprising a first part forming a first housing, housing said power components and a second part forming a second housing, housing filtering components configured to filter DC electrical energy supplied to the power components, notably from a battery of the vehicle,
said second casing part being formed at least in part by a set-back with respect to said first part from an outer face of the casing comprised in the first part.

A rotor assembly for an electric machine, e.g., of an electrified powertrain, includes a rotor having inner and outer diameter surfaces, and a rotor shaft connected to and surrounded by the rotor. The rotor has equally-spaced rotor magnetic poles each having a quadrature-axis (“q-axis”) and a pair of direct-axes (“d-axes”). At each of magnetic pole of the rotor, the rotor defines at least three arcuate notches, including a center notch bisected by the q-axis and a pair of additional arcuate notches symmetrically flanking the center notch. The rotor may include embedded permanent magnets, which may be arranged in a dual V-shaped configuration. Each additional notch may be positioned within a sweep of a top-layer opening angle of the magnets. The center notch and/or the pair of additional notches may define tangentially-continuous fillets which smoothly transition the notch into the outer diameter surface.

An electric machine including a distributed cooling system is disclosed. The electric machine includes a housing, a stator assembly, a rotor assembly, and a distributed cooling system. The distributed cooling system comprising at least one inlet, a first passage, a second passage, and a third passage. The first passage extending axially in a first direction through at least a portion of the rotor shaft to direct a flow of coolant in the first direction. A second passage fluidly coupled to the first passage extending in a second direction through at least a portion of the rotor shaft between a receiving end and a distributing end. At least one third passage fluidly coupled to the second passage extending between a first end and a second end and distributes coolant received from the second passage to at least one of the first end or the second end into the stator assembly.

A P1 hybrid module for a vehicle includes a housing, a motor stator, an input shaft, a resolver rotor, an output flange, a motor rotor, a housing plate, and a resolver stator. The housing is arranged for fixing to an engine and a multi-speed transmission. The motor stator is fixed to the housing. The input shaft is arranged for driving connection to a flange of a damper. The resolver rotor is fixed to the input shaft. The output flange is arranged for fixing to a torque converter. The motor rotor is rotatably fixed to the output flange. The housing plate is fixed to the housing by a first fastener. The resolver stator is fixed to the housing plate radially outside of the resolver rotor.