Abstract: A rotor assembly for an electric machine is described herein. The rotor assembly comprises a body member, a first shaft member and a second shaft member. The body member comprises an inner wall defining a cavity in the body member. The body member is arranged between the first shaft member and the second shaft member. The first shaft member comprises a tube arranged through the first shaft member and extending at least partially in the cavity of the body member. An end of the tube exposed in the cavity comprises a medium dispersion unit configured to disperse a medium in the cavity and the medium dispersion unit comprises an impeller element configured to provide a turbulent flow of the medium.

Abstract: The present disclosure relates to an electric machine, a vehicle comprising such an electric machine and a manufacturing method for such an electric machine. The electric machine comprises a stator unit, a rotor unit, a housing, and a heat exchanging unit. The stator unit and the rotor unit are arranged inside the housing and the housing comprises an inlet port configured to provide a medium inside the housing and an outlet port configured to release the medium out of the housing. The heat exchanging unit is coupled with each of the inlet port and the outlet port and comprises a plurality of channels arranged on an outer surface of the housing. The plurality of channels being configured to transfer heat between the medium and the environment.

Abstract: Electric drive (100, 200, 300, 400) for a vehicle, comprising: at least one hollow shaft (101, 201, 301, 401) mounted for rotation about an axis of rotation; at least one rotor unit (102, 202) being arranged rotationally fixed with the hollow shaft (101, 201, 301, 401); at least one coolant circuit being provided at least partially between the hollow shaft (101, 201, 301, 401) and the rotor unit (102, 202); the coolant circuit comprising at least one cooling section (105, 205) being provided adjacent to the rotor unit (102, 202); and wherein the cooling section (105, 205) has an increasing radius at least partially along its extension parallel to the axis of rotation.

Abstract: A rotor assembly including a body member, a first shaft member and a second shaft member. The body member includes an inner wall defining a cavity inside the body member. The first shaft member is inserted into the body member and extends at least partially in the cavity of the body member. The second shaft member is inserted into the body member and extends from a first end portion of the body member to a second end portion of the body member. The second shaft member is at least partially surrounded by the first shaft member. The first shaft member is configured to provide a medium along the inner wall of the body member, and the second shaft member is configured to provide the medium at each of the first end portion and the second end portion of the body member.

Abstract: The present disclosure relates to an electric machine, a vehicle comprising such an electric machine and a manufacturing method for such an electric machine. The electric machine comprises a stator unit, a rotor unit, a housing, and a heat exchanging unit. The stator unit and the rotor unit are arranged inside the housing and the housing comprises an inlet port configured to provide a medium inside the housing and an outlet port configured to release the medium out of the housing. The heat exchanging unit is coupled with each of the inlet port and the outlet port and comprises a plurality of channels arranged on an outer surface of the housing. The plurality of channels being configured to transfer heat between the medium and the environment.

Abstract: A rotor assembly for an electric machine is described herein. The rotor assembly comprises a body member, a first shaft member and a second shaft member. The body member comprises an inner wall defining a cavity in the body member. The body member is arranged between the first shaft member and the second shaft member. The first shaft member comprises a tube arranged through the first shaft member and extending at least partially in the cavity of the body member. An end of the tube exposed in the cavity comprises a medium dispersion unit configured to disperse a medium in the cavity and the medium dispersion unit comprises an impeller element configured to provide a turbulent flow of the medium.

Abstract: Electric drive (100, 200, 300, 400) for a vehicle, comprising: at least one hollow shaft (101, 201, 301, 401) mounted for rotation about an axis of rotation; at least one rotor unit (102, 202) being arranged rotationally fixed with the hollow shaft (101, 201, 301, 401); at least one coolant circuit being provided at least partially between the hollow shaft (101, 201, 301, 401) and the rotor unit (102, 202); the coolant circuit comprising at least one cooling section (105, 205) being provided adjacent to the rotor unit (102, 202); and wherein the cooling section (105, 205) has an increasing radius at least partially along its extension parallel to the axis of rotation.

Abstract: A vehicle, including: an electric motor operatively connected to at least one driving wheel of the vehicle, and a frame structure including first and second side members extending in a longitudinal direction along opposite sides of the vehicle and at least one cross member extending in a transversal direction of the vehicle and being connected to the first and second side members, wherein the electric motor is supported by the frame structure such that the electric motor is arranged in a front portion of the vehicle in association with a pair of front wheels of the vehicle, and wherein each of the side members, at least along a deformable section thereof, is configured to deform by bending in an inwards and/or outwards transversal direction when compressed by a longitudinally directed force exceeding a threshold value, such as in case the vehicle is subject to a sufficiently energetic frontal collision.

Abstract: A vehicle, including: an electric motor operatively connected to at least one driving wheel of the vehicle, and a frame structure including first and second side members extending in a longitudinal direction along opposite sides of the vehicle and at least one cross member extending in a transversal direction of the vehicle and being connected to the first and second side members, wherein the electric motor is supported by the frame structure such that the electric motor is arranged in a front portion of the vehicle in association with a pair of front wheels of the vehicle, and wherein each of the side members, at least along a deformable section thereof, is configured to deform by bending in an inwards and/or outwards transversal direction when compressed by a longitudinally directed force exceeding a threshold value, such as in case the vehicle is subject to a sufficiently energetic frontal collision.