Abstract: A stator of an electric machine includes: a laminated stator core having sheet-metal blanks, which have slots; and stator windings, which are arranged in the slots of the laminated stator core together with slot insulation, such that, within the slots, a respective slot insulation is positioned between the sheet-metal blanks and the stator windings in order to electrically insulate the stator windings from a sheet-metal material of the sheet-metal blanks, and such that, when viewed in an axial direction, the stator windings protrude from the slots, project laterally with respect to the laminated stator core, and form winding overhangs laterally adjacent to the laminated stator core. When viewed in a radial direction, coolant flow channels are formed radially on an inside and/or radially on an outside, directly adjacent to the slots accommodating the stator windings. The stator windings accommodated in the slots of the laminated stator core are impregnated.

Abstract: A drive axle of an electrically operable motor vehicle includes a drivetrain group having a first drivetrain and a second drivetrain, wherein each of the first drivetrain and the second drivetrain is designed as a single-wheel drive and includes an electric machine and a transmission having at least two transmission stages. The first and second drivetrains are connectable to respective driven shaft assemblies, which generate an output, by a differential lock. The differential lock includes a clutch arrangement having a clutch actuator, which is configured to induce a closing flow of force within one of the two driven shaft assemblies.

Abstract: A method for producing a stator includes: providing a main body, the main body having: a cavity for accommodating a rotor, and a plurality of slots, extending axially through the main body, the plurality of slots accommodating electrical conductors of a winding, providing slot insulation so as to ensure that a slot interior of each slot of the plurality of slots is electrically insulated from the main body and is fluidtight; and forming a respective end plate on each of two ends of the main body, the end plates being attached in a fluidtight manner to the main body so as to ensure that no fluid can get between the end plate and the main body and reach the cavity of the main body. Each end plate has a radial part and an axial part, and the axial part has an insert.

Abstract: An electric machine, including a housing, a rotor which includes a rotor shaft and a rotor laminated core, and a stator which includes a stator laminated core. The stator laminated core includes grooves in which stator windings are received. A respective tooth of the stator laminated core is arranged between two respective grooves that are arranged adjacent to one another in a circumferential direction of the stator laminated core. An annular gap is configured between the rotor laminated core and the stator laminated core, and a tooth head ring is arranged in the annular gap, a respective recess of the tooth head ring arranged between two tooth arranged adjacent to one another in a circumferential direction of the tooth head ring. A relative position of the stator laminated core and the tooth head ring is adjustable to a first and second relative position.

Abstract: An electric machine includes a housing, a rotor including a rotor shaft and a rotor laminated core, and a stator including a stator laminated core with grooves in which stator windings are received, through which a coolant can flow, and wherein a respective tooth of the stator laminated core is arranged between two respective grooves arranged adjacent to one another in a circumferential direction. An annular gap is included between the rotor and stator laminated cores and a tooth head ring arranged in the annular gap, a respective recess of the tooth head ring arranged between two tooth heads of the tooth head ring arranged adjacent to one another in a circumferential direction of the tooth head ring. A wall element is arranged in the annular gap and seals the stator against the rotor such that, from the stator via the annular gap, no coolant moves towards the rotor.

Abstract: An electric machine for a vehicle includes: a stator body, the stator body having, in an alternating manner, stator teeth and stator grooves with conductor elements which are arranged therein, and a yoke section with a radially extending yoke height on the stator body radially outside the stator grooves and the stator teeth, the stator body having a stator outer radius. A ratio of the yoke height in relation to the stator outer radius is between 0.20 and 0.28.

Abstract: An apparatus for cooling an electric propulsion engine for an object, including a stator having a stator housing and a rotor, which is supported in a rotationally movable manner on the stator housing and is connected to a propulsion means for generating a force acting on the object, by a first coolant and a second coolant. The propulsion means generates a flow of the first coolant by rotational motion. The first coolant flows around or through the electric propulsion engine with aid of a flow guide, wherein the second coolant circulates in a cooling channel and transfers uptaken heat to the first coolant. The second coolant is circulated in the cooling channel with aid of a pump driven by the propulsion engine.

Abstract: A rotor device (1) for an electric machine (10) has a rotatably supported shaft (2) and a rotor hub (3) connected to the shaft (2) in a rotationally fixed manner. The shaft (2) has multiple radially outwardly facing shaft protrusions (12), and the rotor hub (3) has multiple radially inwardly facing hub protrusions (13). A shaft protrusion (12) and a respective hub protrusion (13) abut one another in a touching manner in the radial direction at least in sections. Cavities (4) are formed between the rotor hub (3) and the shaft (2). The cavities (4) extend between adjacent shaft protrusions (12) and the hub protrusions (13) lying thereon. The cavities (4) are grouted with a material (14). The material (14) forms form-fit elements (24) that block relative movement of the rotor hub (3) and the shaft (2) in a form-fit manner.

Abstract: A rotor (1) of an electric motor (20) has a rotor body (21) with a rotor shaft receptacle opening (22) for receiving a rotor shaft (3), and a rotor sheath (23) is on the rotor body (21) outward of the rotor shaft receptacle opening (22). Magnetic field-inducing components (10) are arranged in the rotor body (21). The rotor body (21) further has first and second end faces (14, 18) facing away from one another. The rotor (1) also includes a cooling device (4) with a supply channel (5), a drainage channel (6) and cooling channels (11) formed in the rotor body (21) between the rotor shaft receptacle opening (22) and the rotor sheath (23). The cooling channels (11) are arranged adjacent to the magnetic field-inducing components (10). A method for manufacturing a rotor having a cooling device also is provided.

Abstract: A method is provided for manufacturing a rotor (1) of an electric motor. The rotor (1) has a rotor shaft (2), inner sheet metal packets (4), outer sheet metal packets (4), buried magnets (5) arranged in the assembled state between the inner sheet metal packets (3) and the outer sheet metal packets (4), and surface magnets (6) arranged in the assembled state on the outer sheet metal packets (4). The method includes pushing the inner sheet metal packets (3) onto the rotor shaft (2) to achieve alignment rectangularly and coaxially. The rotor (1) is constructed by placing the buried magnets (5) and the outer sheet metal packets (4) on the inner sheet metal packets (3) and the surface magnets (6) on the outer sheet metal packets (4). A total run-out of the rotor (1) thus is set to a predetermined acceptable amount.

Abstract: A stator assembly for an electric machine, including a sheet metal package, a winding assembly, and a collimator. The sheet metal package includes sheets and extends between a first and second axial end. The sheets include grooves forming groove pockets in the sheet metal package. The winding assembly extends through the groove pockets, the groove pockets at least partially including a first plurality of grooves configured as open grooves in a first axial region provided at the first axial end, a second plurality of grooves configured as open grooves in a second axial region provided at the second axial end, and a third plurality of grooves in at least one third axial region, the at least one third axial region lying between the first axial region and the second axial region. The third plurality of grooves are configured as closed grooves.

Abstract: A drive train (100) has an electric machine (1) with a stator (2), an inverter (3) and a connection housing (4) with a coolant chamber (4.1) in which an electric conductor (5) for connecting a directly liquid-cooled stator winding (2.2) of the stator (2) to the inverter (3) is arranged. The coolant chamber (4.1) is open in a liquid-permeable manner toward a stator chamber (2.1) of the stator (2) at an opening (4.3). The electric conductor (5) is guided out of the coolant chamber (4.1) to the inverter (3) at a leadthrough (4.2), and the leadthrough (4.2) is sealed in a liquid-tight manner. A motor vehicle (200) with the drivetrain (100) also is provided.

Abstract: A method for producing a rotor device, including providing a rotor shaft having at least one sheet metal packet joined to the rotor shaft. The at least one sheet metal packet includes magnetic units. The method includes performing a transfer molding process, in which the magnetic units are fixed in position in relation to the at least one sheet metal packet and at least one balancing disk is joined axially on the rotor shaft on at least one side of the at least one sheet metal packet such that a gap of a defined width is ensured between the at least one balancing disk and the at least one sheet metal packet. The gap is filled with a molding compound used for the transfer molding process. The method includes determining an imbalance of the rotor device and compensating the imbalance by removing material from the at least one balancing disk.

Abstract: An electrical machine for a motor vehicle, including a stator including a stator body, wherein the stator body includes alternating stator teeth and stator grooves having conductors arranged therein. A yoke portion having a radially extending yoke height is formed on the stator body radially outside of the stator grooves. The stator body includes a stator outer radius, and a ratio of the yoke height to the stator outer radius is between 0.18 and 0.26.

Abstract: A stator for an electric machine includes a laminated stator core having stator slots arranged along an axial direction parallel to a stator axis, electric conductors arranged in the stator slots; and fluidtight slot insulators arranged in the stator slots between the electric conductors and the laminated stator core, wherein the slot insulators each have a cooling channel spaced apart from the electric conductors in a radial direction arranged orthogonally to the axial direction.

Abstract: A method for producing a stator includes: providing a main body, the main body having: a cavity for accommodating a rotor, and a plurality of slots, extending axially through the main body, the plurality of slots accommodating electrical conductors of a winding, providing slot insulation so as to ensure that a slot interior of each slot of the plurality of slots is electrically insulated from the main body and is fluidtight; and forming a respective end plate on each of two ends of the main body, the end plates being attached in a fluidtight manner to the main body so as to ensure that no fluid can get between the end plate and the main body and reach the cavity of the main body. Each end plate has a radial part and an axial part, and the axial part has an insert.

Abstract: A stator of an electric machine includes: a laminated stator core having sheet-metal blanks, which have slots; and stator windings, which are arranged in the slots of the laminated stator core together with slot insulation, such that, within the slots, a respective slot insulation is positioned between the sheet-metal blanks and the stator windings in order to electrically insulate the stator windings from a sheet-metal material of the sheet-metal blanks, and such that, when viewed in an axial direction, the stator windings protrude from the slots, project laterally with respect to the laminated stator core, and form winding overhangs laterally adjacent to the laminated stator core. When viewed in a radial direction, coolant flow channels are formed radially on an inside and/or radially on an outside, directly adjacent to the slots accommodating the stator windings. The stator windings accommodated in the slots of the laminated stator core are impregnated.

Abstract: An electric machine for a vehicle includes: a stator body, the stator body having, in an alternating manner, stator teeth and stator grooves with conductor elements which are arranged therein, and a yoke section with a radially extending yoke height on the stator body radially outside the stator grooves and the stator teeth, the stator body having a stator outer radius. A ratio of the yoke height in relation to the stator outer radius is between 0.20 and 0.28.

Abstract: A drive train (100) has an electric machine (1) with a stator (2), an inverter (3) and a connection housing (4) with a coolant chamber (4.1) in which an electric conductor (5) for connecting a directly liquid-cooled stator winding (2.2) of the stator (2) to the inverter (3) is arranged. The coolant chamber (4.1) is open in a liquid-permeable manner toward a stator chamber (2.1) of the stator (2) at an opening (4.3). The electric conductor (5) is guided out of the coolant chamber (4.1) to the inverter (3) at a leadthrough (4.2), and the leadthrough (4.2) is sealed in a liquid-tight manner. A motor vehicle (200) with the drivetrain (100) also is provided.

Abstract: Described is a method for producing a stator, in particular for electric motors. In a first step, a plurality of flexible electrical conductors are combined to form a conductor bundle. In a second step, two end regions of the conductor bundle are pressed in such a way that a central region of the conductor bundle formed between the two end regions remains flexible. Also described is a corresponding stator.