Abstract: The present invention relates to an arrangement (O1, S1) of an outer rotor electric machine for reducing eddy current losses of the outer rotor electric machine (I). The outer rotor electric machine comprises a rotatably arranged rotor (10) and a stator (20). Said rotor comprises an outer rotor portion (12) surrounding said stator (20) or part of said stator and a wheel like end wall portion (14). One end (22a) of said stator (20) is arranged to face said end wall portion (14). The arrangement comprises a plurality of openings (O1) distributed on said end wall portion (14) so as to reduce appearance of eddy currents associated with said end wall portion (14) during operation of said electric machine (I). The present invention also relates to an outer rotor electric machine. The present invention also pertains to a platform.

Abstract: The present invention relates to an arrangement (O1, S1) of an outer rotor electric machine for reducing eddy current losses of the outer rotor electric machine (I). The outer rotor electric machine comprises a rotatably arranged rotor (10) and a stator (20). Said rotor comprises an outer rotor portion (12) surrounding said stator (20) or part of said stator and a wheel like end wall portion (14). One end (22a) of said stator (20) is arranged to face said end wall portion (14). The arrangement comprises a plurality of openings (O1) distributed on said end wall portion (14) so as to reduce appearance of eddy currents associated with said end wall portion (14) during operation of said electric machine (I). The present invention also relates to an outer rotor electric machine. The present invention also pertains to a platform.

Abstract: A method and device for liquid cooling of an electric motor and a transmission configuration. The electric motor includes a rotor with a rotor shaft and a stator provided with windings, and the transmission configuration includes a transmission shaft. The rotor and transmission configuration are journally supported by a support configuration. Supplying a liquid for cooling via the support configuration is performed in such a way that the electric motor as well as the transmission configuration are cooled.

Abstract: The invention relates to a method for liquid cooling of an electric motor of inner rotor type having a rotor of hub type and a stator provided with windings. The method includes supplying a cooling liquid for cooling to at least one end of the hub of the rotor, feeding supplied cooling liquid at least radially in the hub by means of the rotation of the hub, and by means of the rotation of the rotor throwing thus fed cooling liquid towards the stator. The invention also relates to a device and a platform to practice the method.

Abstract: The present invention relates to a system for cooling of an electric motor having a rotor and a stator. The system comprises at least one cooling medium applicator arranged to apply a cooling medium onto said stator. Said cooling medium applicator is arranged to be controlled based on a cooling need of the stator so that the cooling medium is applied onto an area of the stator wherein a cooling need exists. The present invention also relates to a method for cooling of an electric motor. The present invention also relates to a platform.

Abstract: The present invention relates to a device for an electric motor having a rotor and a stator. The stator is provided with circumferentially of the stator distributed frame portions between forming spaces for a stator winding. Said frame portions are arranged to support the stator winding, wherein means are provided for retaining the stator winding in a thus formed space in place and for providing a short circuit protection function for the stator winding in said space. Said means comprises cooling member, which are in thermally conductive contact with a back portion of said stator for purpose of cooling. The invention also relates to a platform.

Abstract: A device for liquid cooling an electric motor having a rotor and a stator includes at least one cooling liquid applicator arranged to apply cooling liquid onto the stator. The cooling liquid applicator is moveably arranged relative to the stator so that the cooling liquid by means of movement of the cooling liquid applicator is applied onto different areas of the stator. A method for liquid cooling an electric motor and a platform that includes the device are also described.

Abstract: The disclosure relates to a method for controlling the powertrain of a vehicle, which powertrain comprises a first electric drive device for driving of a first drive shaft and a second electric drive device for driving of a second drive shaft of the vehicle, comprising the step of via power electronics providing electricity supply of a first electric motor of the first electric drive device and a second electric motor of the second electric drive device, comprising the step of providing said electricity supply from a common power electronics which supplies said first and second electric motors with electricity, which motors hereby are connected in parallel. The disclosure also relates to a system for controlling the powertrain of a vehicle. The present invention also relates to a motor vehicle. The present invention also relates to a computer program and a computer program product.

Abstract: A device for cooling of electric motor, which has a stator with a jacket surface/stator back, wherein a housing is arranged to surround the stator, includes at least one cooling channel in which a liquid cooling medium streams for cooling of the electric motor, wherein the housing is arranged to run separated from the stator along a main part of the thermoset cased jacket surface of the stator for forming of said cooling channel between the housing and said jacket surface, wherein the stator winding of the stator is arranged to run along and axially project from and turn outside of said jacket surface, wherein the stator including the projecting stator winding is embedded with said thermoset, wherein said cooling channel also is formed between the housing and the thus projecting stator winding.

Abstract: A method and device for liquid cooling of an electric motor and a transmission configuration. The electric motor includes a rotor with a rotor shaft and a stator provided with windings, and the transmission configuration includes a transmission shaft. The rotor and transmission configuration are journally supported by a support configuration. Supplying a liquid for cooling via the support configuration is performed in such a way that the electric motor as well as the transmission configuration are cooled.

Abstract: The present invention relates to a method for controlling the powertrain of a vehicle, which powertrain comprises a first electric drive device for driving of a first drive shaft and a second electric drive device for driving of a second drive shaft of the vehicle, comprising the step of via power electronics providing electricity supply of a first electric motor of the first electric drive device and a second electric motor of the second electric drive device, comprising the step of providing said electricity supply from a common power electronics which supplies said first and second electric motors with electricity, which motors hereby are connected in parallel. The present invention also relates to a system for controlling the powertrain of a vehicle. The present invention also relates to a motor vehicle. The present invention also relates to a computer program and a computer program product.

Abstract: The present invention relates to an electric drive system comprising an electric motor (10) arranged to rotate a drive shaft (16); a drive planetary gear configuration (70) being in driving engagement with said drive shaft (16) and an output shaft (50) rotatable relative to said drive shaft (16); and means for providing change in rotational speed of said output shaft (50), wherein said rotational speed changing means (80, 82) are disposed on opposite sides of the motor (10) respectively. The present invention also relates to a motor driven unit, for example a motor vehicle.

Abstract: The invention relates to a method for liquid cooling of an electric motor of inner rotor type having a rotor of hub type and a stator provided with windings. The method includes supplying a cooling liquid for cooling to at least one end of the hub of the rotor, feeding supplied cooling liquid at least radially in the hub by means of the rotation of the hub, and by means of the rotation of the rotor throwing thus fed cooling liquid towards the stator. The invention also relates to a device and a platform to practice the method.

Abstract: The present invention relates to a method for liquid cooling of an electric motor (1) of inner rotor type comprising a rotor (10) and a stator (30) provided with windings, comprising the steps of: supplying (S1) a liquid (O) for said liquid cooling to a cooling flange configuration (40) of at least one end (10a, 10b) of said rotor (10); and by means of the rotation of the rotor supplying (S2) liquid also to said stator (30) by means of said cooling flange configuration (40). The present invention also relates to a device for liquid cooling of an electric motor (1) of inner rotor type. The present invention also relates to a motor vehicle.

Abstract: The invention relates to a device for cooling of electric motor (10), which electric motor comprises a stator (30) with a jacket surface/stator back (35), wherein a housing (40) is arranged to surround the stator (30), the device comprising at least one cooling channel (50) in which a liquid cooling medium is intended to stream for cooling of the electric motor (10), wherein the housing (40) is arranged to run separated from the stator (30) along a main part of the thermoset cased jacket surface (35) of the stator (30) for forming of said cooling channel (50) between the housing (40) and said jacket surface (50), wherein the stator winding (32) of the stator is arranged to run along and axially project from and turn outside of said jacket surface (35), wherein the stator (30) including the projecting stator winding (32) is embedded with said thermoset (E), wherein said cooling channel (50) also is formed between the housing (40) and the thus projecting stator winding (32).

Abstract: An electric drive system including an electric motor arranged to rotate a drive shaft. A differential includes a first planetary gear being drivingly connected to a first output assembly. A second planetary gear configuration is in driving engagement with the first planetary gear configuration via an output shaft. The second planetary configuration is drivingly connected to a second output assembly. The motor is disposed between the first and second planetary gear configuration. The first planetary gear configuration is arranged to co-act with the second planetary gear configuration so as to provide a differential function. The ring gears of the first and second planetary gear configurations are engaged via a reversing assembly for the differential function. Also, a motor driven unit, such as a motor vehicle.

Abstract: The present invention relates to an electric drive system comprising an electric motor (10) arranged to rotate a drive shaft (16); a drive planetary gear configuration (70) being in driving engagement with said drive shaft (16) and an output shaft (50) rotatable relative to said drive shaft (16); and means for providing change in rotational speed of said output shaft (50), wherein said rotational speed changing means (80, 82) are disposed on opposite sides of the motor (10) respectively. The present invention also relates to a motor driven unit, for example a motor vehicle.

Abstract: An electric drive system including an electric motor arranged to rotate a drive shaft. A differential includes a first planetary gear being drivingly connected to a first output assembly. A second planetary gear configuration is in driving engagement with the first planetary gear configuration via an output shaft. The second planetary configuration is drivingly connected to a second output assembly. The motor is disposed between the first and second planetary gear configuration. The first planetary gear configuration is arranged to co-act with the second planetary gear configuration so as to provide a differential function. The ring gears of the first and second planetary gear configurations are engaged via a reversing assembly for the differential function. Also, a motor driven unit, such as a motor vehicle.