Abstract: An electric machine rotor, for traction of motor vehicles, has two shaft portions opposite one another and supported by respective bearings. One of said shaft portions defines an inlet and an outlet for a heat exchange liquid, for cooling an annular wall supporting a plurality of permanent magnets, and radially delimits an inner cavity engaged by a core; the latter has an axial hole communicating with the inlet to supply a plurality of heat exchange channels through delivery junction channels, which are separate from one another and are configured so as to divert the liquid into a radial direction. The liquid is then diverted into an axial direction towards the outlet by separate return junction channels. The delivery junction channels and/or the return junction channels are defined by two surfaces, which axially face one another and define part of the core and of a body distinct from the core, respectively.

Abstract: An axle for a motor vehicle includes an electric motor having an outer casing, an electrical grid configured to power the motor and comprising an inverter in turn comprising a box internally defining a housing and attached to the outer casing, an electronic board comprising a transducer configured to detect a quantity indicative of a vibration of the axle and to generate a corresponding signal, characterized in that the electronic board is attached to the box.

Abstract: An axle for a motor vehicle includes an electric motor having an outer casing, an electrical grid configured to power the motor and comprising an inverter in turn comprising a box internally defining a housing and attached to the outer casing, an electronic board comprising a transducer configured to detect a quantity indicative of a vibration of the axle and to generate a corresponding signal, characterized in that the electronic board is attached to the box.

Abstract: An electric motor including a rotor, rotating about an axis of rotation, and a stator, coaxial to the rotor. The stator has a casing. A body incorporates a controller of the electric motor. The body is placed outside the stator and parallel to the axis of rotation in a position substantially tangent to the casing of the stator. The rotor includes a first and second cooling fan, keyed on respective first and second axial ends of the rotor, opposite along the axis of rotation. The first and second cooling fans generate respectively, with the rotation of the rotor, a first and a second flow of cooling air independent of each other. The first flow of cooling air is directed toward the first axial end of the rotor, and the second flow of cooling air is directed towards the body so as to cool down the controller.

Abstract: An electric machine having a tangential architecture comprising a rotor, rotating about an axis of rotation, a stator, coaxial to the rotor with respect to said axis of rotation, the stator comprising a casing which at least partially incorporates the rotor, a power supply body which incorporates a controller for the actuation, the power supply and the control of the electric machine. The power supply body is located outside the stator and parallel to the axis of rotation in a position substantially tangent to the casing of the stator. The controller includes a power module to power the electric machine. The power module is provided with a main heat sink, suitable to dissipate the thermal power emitted by the power module itself, and the power module is thermally insulated from the remaining controller.

Abstract: An electric motor including a rotor, rotating about an axis of rotation, and a stator, coaxial to the rotor. The stator has a casing. A body incorporates a controller of the electric motor. The body is placed outside the stator and parallel to the axis of rotation in a position substantially tangent to the casing of the stator. The rotor includes a first and second cooling fan, keyed on respective first and second axial ends of the rotor, opposite along the axis of rotation. The first and second cooling fans generate respectively, with the rotation of the rotor, a first and a second flow of cooling air independent of each other. The first flow of cooling air is directed toward the first axial end of the rotor, and the second flow of cooling air is directed towards the body so as to cool down the controller.

Abstract: An electric machine having a tangential architecture comprising a rotor, rotating about an axis of rotation, a stator, coaxial to the rotor with respect to said axis of rotation, the stator comprising a casing which at least partially incorporates the rotor, a power supply body which incorporates means of control for the actuation, the power supply and the control of the electric machine, the power supply body being placed outside the stator and parallel to the axis of rotation in a position substantially tangent to the casing of the stator, the control means comprising a power module to power the electric machine. Advantageously, the power module is provided with a main heat sink, suitable to dissipate the thermal power emitted by the power module itself, and the power module is thermally insulated from the remaining control means.