Abstract: An example system comprises an electric machine including a stator and a rotor, a cooling system configured to supply a cooling fluid to cool the electric machine, and a stator tube configured to contain the cooling fluid within a stator portion of the electric machine and prevent the cooling fluid from contacting the rotor.

Abstract: An electric motor and inverter assembly and a method of assembly therefor, the electric motor and inverter assembly having a motor housing portion, a DC bus bar for electrically connecting a DC power source to an inverter power module where the DC bus bar is mounted on the housing portion, and a cooling channel disposed in between the housing portion and the DC bus bar for cooling the DC bus bar.

Abstract: An electrical machine assembly includes a stator. The stator includes a core, windings assembled into the core, and a back iron heat exchanger mounted to the core. A first end plate is mounted at a first end of the core and back iron heat exchanger. A second end plate is mounted at a second end of the core and back iron heat exchanger opposite the first end plate. A coolant circuit passes from a coolant inlet in the back iron heat exchanger, through the back iron heat exchanger, into the first end plate, out of the first end plate, through the core, into the second end plate, and out of the second end plate.

Abstract: A wind turbine includes a dynamoelectric machine including a liquid-cooled stator and a rotor interacting with one another. The stator includes a magnetically conductive body and a winding system which is embedded in slots of the magnetically conductive body and which includes a main insulation arranged between a conductor of the winding system and a slot wall and including at least one recess provided in a cooling-channel impression of the main insulation to form at least one axial cooling channel extending between the main insulation and the slot wall, so that the at least one cooling channel borders the slot wall without insulation in direct contact with the slot wall. The winding system includes end windings which are also liquid-cooled. A can separates the stator and the rotor from one another and enables different cooling media for the stator and the rotor.

Abstract: A voltage balanced winding for a stator of an electric machine with a high number of pole pairs is distributed over several circumferential sections and several radial layers of the stator. The winding consists of at least two phases and each phase of the winding comprises a plurality of conductor segments, one conductor segment for each layer in each sector. Each of the conductor segments comprises a plurality of straight conductor portions arranged in an axial direction of the stator and a plurality of end-windings connecting the straight conductor portions to a wave pattern. The voltage balanced winding is characterized in that the plurality of conductor segments is divided into branches of series connected conductor segments, wherein each branch includes at least D conductor segments selected from D different sections d and D different layers j such that (j+d) mod D equals a predefined number, with D being the number of circumferential sections.

Abstract: Provided is a vibration actuator including: a movable body including a coil and a core around which the coil is wound; a fixing body including a magnet; and a shaft part turnably supporting the movable body with respect to the fixing body on a side of the one end part of the core. The movable body reciprocatingly and rotationally vibrates around the shaft part with respect to the fixing body by cooperation between the coil to be energized and the magnet. The magnet is disposed to face the other end part of the core in an extending direction of the core when energization is not performed. The magnet includes two magnetic poles having different polarities and arranged in a reciprocating and rotational vibration direction. A weight part is disposed in a notch on a side of the other end part of the core or in the coil.

Abstract: A vehicle electric machine includes a housing and a stator having windings and a stator core. The core defines a plurality of axially extending cooling channels each having an entrance port at one end of the stator and an exit port at the other end of the stator. An end cover is connected to a first end of the housing defining a recessed cavity configured to receive the windings and defines an arcuate inlet manifold channel that extends in a circumferential direction of the stator to partially circumscribe the first cavity and that is in fluid communication with first ones of the axial cooling channels.

Abstract: An electrical propulsion unit (EPU) for a vertical take-off and landing (VTOL) aircraft is provided. The EPU includes a propeller or a fan and an electric motor. The electric motor includes a stator comprising coils configured to carry current and a rotor arranged to interact with the stator. The rotor is configured to generate a torque for driving rotation of the propeller or the fan. The coils of the stator have a cumulated conductor volume Vconductor The stator, the rotor, or the stator and the rotor include a flux guiding iron material configured to guide magnetic flux generated by the coils of the stator, wherein the flux guiding iron material has a cumulated iron volume Viron, and wherein the electric motor has a machine parameter ? that is greater than or equal to 0.25, ? being defined as: ?=Vconductor/Viron.

Abstract: An apparatus for cooling a coil of a motor includes a cooling cap unit covering an end coil of a stator coil bundle, coupled to a stator, and having, formed therein, a flow path through which fluid is able to flow; an inlet flow path unit formed at one part of the cooling cap unit, and forming an inlet path through which fluid is introduced into the cooling cap unit; an outlet flow path unit formed at the other part of the cooling cap unit, and forming an outlet path through which fluid is discharged to an outside of the cooling cap unit; and a cap fixing unit fixing the cooling cap unit to the stator or a motor housing.

Abstract: A stator for an electric machine of a motor vehicle includes a laminated core having an inner side with winding grooves and an outer side. Windings, which are arranged in the winding grooves, form winding heads on axially opposing front faces of the laminated core. A cooling jacket conducts cooling fluid and has a first metal sheet which forms an inner wall of the cooling jacket facing the laminated core, and a second metal sheet which forms an outer wall of the cooling jacket surrounding the inner wall. An axial height of the cooling jacket exceeds an axial height of the laminated core. The cooling jacket has a laminated-core cooling jacket region for encasing the laminated core and two axially opposing winding-head cooling jacket regions adjoining the laminated-core cooling jacket region for encasing the winding heads.

Abstract: An electric machine includes a stator formed from a plurality of stator laminations arranged in a first lamination group and a second lamination group that is circumferentially off-set from the first lamination group. The first lamination group and the second lamination group forming a tortuous flow path that extends axially across the stator. Each of the plurality of stator laminations of the first lamination group includes a body having an inner surface section and an outer surface section. The inner surface section includes a plurality of stator teeth. A plurality of cooling channel defining members is integrally formed with and extend radially outwardly from the outer surface section. Each of the plurality of cooling channel defining members being spaced from others of the plurality of cooling channel defining members by a corresponding gap.

Abstract: Provided is a vibration exciter, comprising a shell having a receiving space, a vibration unit suspended in the shell, a coil configured to drive the vibration unit, and an elastic member configured to suspend the vibration unit in the shell. The vibration unit comprises a mass block fixedly connected to the elastic member. The mass block comprises fixing planes opposite to each other along a vibration direction. The elastic member has one end fixed to the mass block and another end fixed to the shell, and a projection of the elastic member in the vibration direction is at least partially located in the fixing planes. Compared with the related art, the vibration exciter provided by the present invention can improve the vibration stability.

Abstract: This disclosure relates to thermal management for an electric machine, such as an electric motor, of an electrified vehicle. An example assembly includes a stator having a core and a jacket at least partially surrounding the core. The jacket radially encloses a slot and is configured to permit fluid to flow within the slot from a first face of the stator to a second face of the stator. The assembly further includes a first end cover covering the first face of the stator. The first end cover has an inlet port and is configured to direct fluid from the inlet into the slot. Further, the assembly includes a second end cover covering the second face of the stator and configured to direct fluid that exits the slot.

Abstract: The actuator includes a magnetic drive mechanism to relatively move the movable body with respect to the support body. The magnetic drive mechanism has a magnet and a coil. The connecting element connected to the support body and the movable body is a viscoelastic member. The viscoelastic member has a temperature characteristic that a loss tangent (Tan ?) thereof measured by a dynamic viscoelasticity measurement decreases as a temperature rises. When using a silicone gel as the connecting element, the decrease in the peak value of the acceleration of the movable body caused by the decrease in the current flowing through the coil is cancelled by the increase in the peak value of the acceleration of the movable body caused by the decrease in Tan ? of the silicone gel. Therefore, the oscillation of the movable body is unchanged even if a temperature changes.

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 coolant flowpath configuration for an electric motor is disclosed herein. The coolant flowpath configuration includes a coolant flowpath channel defined on a radially outer surface of a stator lamination pack. The coolant flowpath channel includes: a first axial end defined radially outward from a first set of coils; and a second axial end defined radially outward from a second set of coils that is remote from the first set of coils.

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 motor includes a flexible variable flow channel arranged in the motor along a heat source distribution direction. The flexible variable flow channel includes a flow channel main body, at least one flexible component module mounted in the flow channel main body, a support body, and a quick adapter. The flow channel main body is configured to store and transfer a heat transferring liquid. The heat transferring liquid is configured to dissipate heat from the heat sources. The at least one flexible component module is configured to change a flow and a flow state of the heat transferring liquid flowing through the at least one flexible component module. The support body is configured to support the at least one flexible component module. The quick adapter is configured to quickly mount the at least one flexible component module. The at least one flexible component module is selected from four structures.

Abstract: A motor with a cooling system is provided. The motor includes a cooling system cooling a stator with coils wound on a core, in which the cooling system includes a plurality of spray pipes having a plurality of holes and spraying oil through the holes, the plurality of spray pipes is positioned between the stator and a housing of the motor, and the plurality of spray pipes includes pipes disposed at a center over the stator and at both sides spaced apart from each other in a circumferential direction of the stator from the center with predetermined gaps therebetween.

Abstract: A cooling-channel integrated motor housing includes a motor housing, a plurality of stator cores press-fitted into the motor housing, and a cooling pipe inserted into the motor housing and disposed in a circumferential direction of a circle along which the stator cores are arranged. The 1cooling pipe is disposed to overlap with the stator cores in a direction perpendicular to a direction in which a rotating shaft of a motor extends.