An electric machine optimized for propulsion systems in electric vehicles

Abstract

The present invention relates to an electric machine (1) which enables an electric vehicle to have high thrust; can operate at high torque and high speed; can be mechanically mounted on a vehicle via a plurality of different transmission types and a plurality of different inverter circuits; and can operate in harmony with land vehicles, aircrafts and vessels so as to provide different combinations of speed, torque and power.

Description

[0001] DESCRIPTION

[0002] AN ELECTRIC MACHINE OPTIMIZED FOR PROPULSION SYSTEMS

[0003] IN ELECTRIC VEHICLES

[0004] Technical Field

[0005] The present invention relates to an electric machine which enables an electric vehicle to have high thrust; can operate at high torque and high speed; can be mechanically mounted on a vehicle via a plurality of different transmission types and a plurality of different inverter circuits; and can operate in harmony with land vehicles, aircrafts and vessels so as to provide different combinations of speed, torque and power.

[0006] Background of the Invention

[0007] Today, an interior permanent magnet synchronous machine (IPMSM), which is preferred due to its higher power density advantage compared to other electric motors, is used in electric vehicles. IPMSM machines contain a rotor with a magnet embedded therein that provides motion by rotating around a shaft, and a fixed- position stator wherein copper wire windings are present inside. During the movement, the rotating magnetic field created by the magnets in the rotor interacts with another rotating magnetic field created by the copper windings in the stator. The said machine functions as a motor upon the stator leading the mechanical tracking, and as a generator upon the rotor leading the mechanical tracking and charges the battery. Geometric optimization of the magnetic flux paths in providing the movement is important for generating torque in the most efficient way. Furthermore, optimization of the steel area gains even more importance when considering the stator's geometry which consists of slots and gears and increases the magnetic oscillation. The magnetic flux density that can be provided in the stator is limited by the nature of magnetic materials. Electric machines can be used in the region where the magnetic material behaves linearly, in the region where it reaches saturation, according to different torque requirements. The torque increase in the machine is limited as the magnetic flux leakage increases at the point where it reaches saturation. In addition, if there is not enough steel area in the stator teeth, the torque is limited to a much lower order.

[0008] In the state of art, in order to reduce torque ripple in IPMSM machines, a V-shaped skew layer is used in the rotor adjusted at different angles; the magnet pockets are designed in a V-shape; demagnetization is prevented by placing an air gap at the ends of the pockets of the magnets in the rotor; a parallel tooth configuration is used in the stator; and an interlock is used for sheet metal coupling in the rotor. However, due to the high-power density in the electrical machine package, a high amount of heat rejection is required. This causes the subcomponents of the electrical machine to reach critical temperature values and creates a need for an effective cooling method. Given the limited space in which the machine will be mounted, the package size of the machine is reduced by using liquid cooling in order to refrigerate the machine.

[0009] In the current technique, no solution has been found, which enables the use of the tooth configuration suitable for round wire winding; to obtain higher torque values at high speeds with the q-axis notch than the structure without notch; the reduction of the q-axis inductance via the q-axis notch; the reduction of torque ripple at high speeds via the q-axis notch; the rotor to have 6 layers offset to a certain degree in three different orientations for reducing torque ripple; the reduction of torque ripple by realizing the 6 layers of the rotor in a V-skew format; the fundamental component of the back-emf to be maximized and the end-winding length to be shortened via distributed winding in a 48 slot, 8 pole configuration and integral slot pitch factor; the inverter switching frequency to be increased to the high speeds required by vehicle requirements via a 48 slot, 8 pole configuration; and the reduction of NVH (Noise Vibration Harshness) (noise) with the determined ratio of 48 / 8 compared to different slot / pole ratios; the prevention of possible inductive bearing currents by using electrically insulated bearings (insulated coating) on the resolver side; the protection of the bearing inner race on the transmission side against capacitive bearing currents by a conductive radial seal; the mechanical integrity to be strengthened by coupling the stator sheets linearly along the stator length via external laser welding at the points that will not affect the magnetic flux paths; the mechanical stabilization and the reduction of thermal resistance by the use of potting in the fixing of magnets; the precise mounting and sealing of the outer housing with stator cooling ducts; the production of rotor sheets with a serrated tooth structure in order to improve mounting and adhesion properties of the inner diameter of the rotor sheets to the shaft; the cooling channels to have a design that can move the cooling liquid in a spiral structure in a tangential direction around the stator and a homogeneous temperature distribution to be provided at the desired values on the stator surface; the sectional and projection geometries of the cooling channel to be designed in such a way as to keep the heat transfer and cooling liquid pressure drop value within the desired limits; the cooling channel structure to be suitable for optimization by adjusting the channel width and depth according to different cooling needs; the outer housing design to be created in such a way as to be suitable for different inverter and transmission configurations; the current leaving the inverter to be carried on 4 separate parallel paths in order to meet the current requirement; the optimization of the lug structure in order to minimize torque ripple; the mechanical integrity of the rotor to be strengthened by the interlock being present between the V-barriers, in the center orientation of the rotor lamination web, at the level of the lower paddle of the magnet pockets in such a way as not to affect the magnetic flux paths; a balance plate to be placed in front of and behind the outer layers in order to balance the rotor; a 2-part coupling by fixing the rotor to the outer housing and the stator to the inner housing within the scope of mounting; the machine to be suitable for the mounting of different resolver packages; stator and rotor sheets to be coupled with sheet adhesive in order to minimize iron loss / core loss and to reduce vibration and noise; the reduction of noise and vibration by the use of interlock between the teeth and the back core in the stator. The Japanese patent document no. JP2020036504, an application included in the state of the art and found as a result of the research, discloses the improvement in the efficiency and demagnetization resistance of an electric motor via a q-axis notch on the rotor. In the said invention, the motor comprises at least one rotor facing the stator that is located in the cavity and a magnet embedded in the rotor and consisting of a predetermined magnetic pole. In the invention, the electric motor is arranged in a airtight container and the airtight container consists of a body, a lid covering the upper opening of the body and at least one lower lid covering the lower opening of the body. The airtight container comprises a refrigerant suction pipe and a refrigerant discharge pipe for discharging the refrigerant compressed by the compression mechanism to the outside of the container. The compression mechanism has a rotating shaft that moves on a fixed orbit. The electric motor is fixed inside the airtight container and has a hollow stator and a cylindrical rotor placed inside the stator. Furthermore, in the said invention, it is disclosed that there is at least one notch present in such a way that it is recessed towards the axis of rotation of the rotor and is present in such a way that it is positioned on the q-axis.

[0010] Summary of the Invention

[0011] An object of the present invention is to realize an electric machine optimized for propulsion systems in electric vehicles which enables to realize the optimization of the stator using a round wire type winding in order to prevent the limitation of the torque increase upon the increase of magnetic flux leakage at the point where the magnetic material reaches saturation; the addition of the respective area to the slot by avoiding the tooth area inefficiency in the parallel slot technique by using a parallel tooth configuration for more efficient use of flux paths; the torque density in the machine to be increased upon placing more copper in the slot by using a parallel tooth configuration for more efficient use of flux paths; higher cooling performance to be obtained as a result of the reduction of the thermal resistance between the slot cooling duct upon placing more copper in the air gaps in the slot; the use of a cooling system with a high heat transfer coefficient in the electric machine in order to remove the generated high heat rejection from the electric machine body and to obtain a homogeneous temperature distribution below the critical temperature value in the subcomponents of the machine.

[0012] Another object of the present invention is to realize an electric machine optimized for propulsion systems in electric vehicles which enables to perform operations such as using the notch in order to increase the high-speed performance in the q- axis in the torque optimization located on the d and q axes that have an important role in interior magnet electric machines; providing higher torque and lower torque ripple at high speeds by means of the notch; optimizing the barrier thickness of the d-axis magnets so as to withstand the centrifugal force at the maximum speed value; minimizing the flux leakage of the magnets in the said optimization and determining the angle between the magnets in such a way as to obtain the highest torque.

[0013] Another object of the present invention is to realize an electric machine optimized for propulsion systems in electric vehicles which enables the magnet pole-to- stator ratio that plays a role in reducing the noise vibration harshness (NVH) of the machine to be selected in such a way as to enable the machine to operate with lower noise and the respective machine to be improved in such a way as to be resistant to load types caused by the road, in case the machine is used in electric vehicles.

[0014] Detailed Description of the Invention

[0015] “An Electric Machine Optimized for Propulsion Systems in Electric Vehicles” realized to fulfil the objective of the present invention is shown in the figures attached, in which:

[0016] Figure 1 is a front and top profile view of the rotor layers of the rotor components included in the inventive machine on the rotor shaft. Figure 2 is a detailed view of the rotor components included in the inventive machine on the rotor shaft from another angle.

[0017] Figure 3 is a front, top, bottom and side perspective view of the rotor components included in the inventive machine.

[0018] Figure 4 is a front view of the magnet rotor sheet in the inventive machine.

[0019] Figure 5 is a detailed frontal view of the interlocked rotor sheet in the inventive machine.

[0020] Figure 6 is a detailed view of the female rotor layer in the inventive machine.

[0021] Figure 7 is a detailed view of the male rotor layer in the inventive machine.

[0022] Figure 8 is a detailed view of the offset male rotor layer in the inventive machine.

[0023] Figure 9 is a perspective view of the resolver shaft included in the inventive machine from the front, rear, side and sectioned from the side.

[0024] Figure 10 is a perspective view of the resolver-rotor interface included in the inventive machine from the front, side and sectioned from the side.

[0025] Figure 11 is a front, rear, side and top view of the rotor shaft included in the inventive machine.

[0026] Figure 12 is a front, side and side perspective view of the rotor-balance plate included in the inventive machine. Figure 13 is a front and side view of the stator included in the inventive machine.

[0027] Figure 14 is a detailed front perspective view of the stator included in the inventive machine.

[0028] Figure 15 is a view of the end-winding stator included in the inventive machine, from the front, top and sectioned from the side.

[0029] Figure 16 is a detailed view of the stator included in the inventive machine from the front, top and side perspectives.

[0030] Figure 17 is a detailed view of the stator sheet geometry included in the inventive machine.

[0031] Figure 18 is a detailed view of the round wire stator structure which enables the integral slot pitch winding to be visualized by enabling the schema of the copper windings included in the inventive machine to be shown, and the number of turns per phase of the winding schema to be represented.

[0032] Figure 19 is a detailed view of the drive connections of the windings which enables the connection of both terminals of the phases included in the inventive machine and the connection of the input terminals to the inverter busbars and the output terminals to represent the winding connection type (Y connection / star connection).

[0033] Figure 20 is a detailed view of the inner housing components included in the inventive machine. Figure 21 is a detailed view of the inner housing body included in the inventive machine together with the cooling jacket.

[0034] Figure 22 is a detailed view of the outer housing body and the components of the outer housing body included in the inventive machine.

[0035] Figure 23 is a perspective view of the outer housing lid included in the inventive machine from the front, top and side.

[0036] Figure 24 is a perspective view of the outer housing gasket included in the inventive machine from the top and side.

[0037] Figure 25 is a perspective view of the resolver-stator interface included in the inventive machine from front, top and side.

[0038] Figure 26 is a sectioned view of the inventive outer housing from front, back, top and side.

[0039] Figure 27 is a detailed view of the exploded state of the inventive machine.

[0040] The components illustrated in the figure are individually numbered, where the numbers refer to the following:

[0041] 1. Machine

[0042] 2. Stator

[0043] 21. Stator Body

[0044] 22. Copper Winding

[0045] 23. End- winding

[0046] 211. Locking Plate Washer

[0047] 212. Spring Washer

[0048] 3. Inner Housing Body 31. Bearing

[0049] 311. First Retaining Ring

[0050] 312. Second Retaining Ring

[0051] 32. Gasket

[0052] 4. Rotor

[0053] 41. Rotor Shaft

[0054] 411. Resolver Shaft

[0055] 412. Rotor-balance Plate

[0056] 413. Rotor Layer

[0057] 5. Rotor-resolver Interface

[0058] 6. Outer Housing Body

[0059] 7. Outer Housing Lid

[0060] 71. Outer Housing Cap

[0061] 8. Outer Housing Gasket

[0062] 9. Resolver Stator

[0063] 10. Resolver-stator Interface

[0064] 11. Resolver Rotor

[0065] 12. First Screw

[0066] 13. Second Screw

[0067] 14. Third Screw

[0068] 15. Fourth Screw

[0069] An inventive electric machine (1) optimized for propulsion systems in electric vehicles which enables an electric vehicle to have high thrust; can operate at high torque and high speed; can be mechanically mounted on the vehicle via a plurality of different transmission types and a plurality of different inverter circuits; and can operate in harmony with land vehicles, aircrafts and vessels so as to provide different combinations of speed, torque and power comprises at least one stator (2) which comprises at least one stator body (21) that has a fixed structure in the form of a cylinder on its outermost side and is hollow inside; has the copper winding (22) and the end- winding (23) on the inner part of the stator body (21); creates a rotating magnetic field therein by means of the copper windings (22); has a plurality of locking plate washers (211) and a plurality of spring washers (212) on its inner part; enables the fundamental component of the back-emf to be maximized and the end- winding (23) length to be shortened via distributed winding in a 48 slot, 8 pole configuration and integral slot pitch factor; enables homogeneous temperature distribution on its surface by means of the cooling channels thereof spirally moving the cooling liquid in a tangential way around its outer surface; enables the inverter switching frequency to be increased to the high speeds required by vehicle requirements via a 48 slot, 8 pole configuration and the reduction of noise vibration harshness with the determined ratio of 48 / 8 compared to different slot / pole ratios; at least one inner housing body (3) which is compatible with the cylindrical structure of the stator (2) and enables the stator (2) to be fitted into its inner part; has at least one gasket (32), at least one first retaining ring (311), at least one second retaining ring (312) and at least one bearing (31); and has a cooling jacket outer surface thereof; at least one rotor (4) which has a rotating structure; has a plurality of rotor layers (413), each having a plurality of magnets embedded therein; comprises at least one resolver shaft (411) on the rotor shaft (41), a plurality of rotor-balance plates (412) and a plurality of rotor layers (413) in the center of the rotor-balance plates (412); and acts as a generator when its magnetic field is ahead of the magnetic field of the stator (2) and as a motor when its magnetic field is behind the magnetic field of the stator (2); at least one rotor-resolver interface (5) which enables the resolver to be connected to the rotor (4), and is suitable for the use of different resolver models; at least one outer housing body (6) which enables the inner housing body (3) to be positioned on its inner part; enables the jacket on the outer surface of the inner housing body (3) to be covered by framing the outer surface of the inner housing body (3); and has an access section for busbar and resolver cables; at least one outer housing lid (7) which is positioned on the outer side of the outer housing body (6); and comprises at least one outer housing cap (71) that enables electrical interfaces to reach the inverter and to be protected; at least one outer housing gasket (8) which provides sealing between the outer housing lid (7) and the outer housing body (6) and environmental protection; at least one resolver stator (9) which comprises primary exciter and secondary cosine and sine windings and enables the primary exciter winding and rotor (4) to form a transformer; enables the instantaneous angular position and angular speed of the motor to be measured by means of the voltage induced in the rotor (4) winding being subsequently induced in the cosine and sine windings in the stator (2); and provides the closed-cycle torque and speed control required in driving the motor upon transfer of the angular position and speed to the inverter side; at least one resolver- stator interface (10) which enables the resolver to be connected to the outer housing body (6); at least one resolver rotor (11) which enables instantaneous angular position and angular speed of the motor to be measured by means of the voltage that varies depending on the angle by inducing voltage in the cosine and sine windings in the resolver stator (9) upon rotation of the rotor shaft (41); and provides the closed- cycle torque and speed control required in driving the motor upon transfer of the instantaneous angular position and speed to the inverter side; a plurality of first screws (12) of fhc-M8-35 type which enable the outer housing body (6) to be fixed to the inner housing body (3) by being passed through the holes located on the outer surfaces of the outer housing body (6) and the inner housing body (3); a plurality of second screws (13) of ISO7380 M4xl6 type which enable the outer housing body (6) to be fixed to the inner housing body (3) by being passed through the holes located on the outer housing lid (7) side of the outer housing body (6); a plurality of third screws (14) of ISO7380 M4x8 type which enable the resolver to be fixed to the outer housing body (6); and a plurality of fourth screws (15) of type ISO7380 M5xl2 which enable the outer housing lid (7) and the outer housing gasket (8) to be fixed to the outer housing body (6).

[0070] The stator (2) included in the inventive machine (1) enables the magnetic flux leakage increase to be prevented at the point where the magnetic material reaches saturation by using a round wire type winding. The stator (2) uses a parallel tooth configuration suitable for the round wire winding (roundwire / random wound winding). The stator body (21) strengthens the mechanical integrity by being coupled linearly along the stator (2) length via external laser welding at the points that will not affect the magnetic flux paths. The stator (2) enables the inefficiency of the tooth area in the parallel slot technique to be prevented by using the parallel tooth configuration in more efficient use of the flux paths and enables the said area to be added to the slots above it, and the torque density in the motor to be increased by placing more copper in the slots in the parallel tooth configuration. The stator (2) removes the generated high heat rejection from the inner housing body (3) and the outer housing body (6) by enabling a higher cooling performance to be obtained by enabling the thermal resistance between the slot cooling duct to be reduced by placing more copper in the air gaps in the slots thereon. The stator (2) is fixed to the inner housing body (3) upon the realization of a two-part coupling during mounting. In one embodiment of the invention, the stator (2) enables noise and vibration to be reduced by using an interlock between the back core area of each lamination sheet thereon. The stator (2) enables the heat transfer and cooling liquid pressure drop value to be kept within the desired limit via the sectional and projection geometries of the cooling channel thereon. The stator (2) is suitable for being optimized by adjusting the width and depth of the cooling channel structure thereon according to different cooling needs. The locking plate washers (211) fix the bearing (31) to the stator (2) together with the spring washers (212). The stator (2) enables the thickness of the copper windings (22) carrying the current to be reduced by enabling the currents to be transmitted in 4 parallel paths via the copper winding (22) structure thereof, and the length of the end-winding to be reduced by enabling the bendability of the copper windings (22) to be increased; and enables the loss increases that the alternating current frequency may cause with the decrease in the cable sectional area to be prevented and the copper filling ratio (slot fill factor) in the slots thereon to be increased. The copper windings (22) realize the current requirements by enabling the current leaving the inverter to be carried in 4 separate parallel paths as a result of the winding of the said copper wire into the slots of the stator (2) for 16 turns by enabling the quarter of each phase current to be carried upon the parallel connection of 10 copper wires during winding.

[0071] The inner housing body (3) enables a homogeneous temperature distribution below the critical temperature value in the subcomponents of the engine to be obtained by creating a cooling system with a high heat transfer coefficient as a result of the use of the cooling jacket located on the outer surface thereof included in the inventive machine (1) together with the cooling channels in the stator (2). The bearing (31) prevents possible inductive currents by being used as electrically isolated type on the resolver side. The bearing (31) is protected against possible capacitive currents that may occur due to the protection of the inner race of the transmission side with a conductive radial seal.

[0072] The rotor (4) included in the preferred embodiment of the inventive machine (1) comprises 6 rotor layers (413) that are offset from each other by a certain degree in the process of reducing torque ripple and are in a structure with 3 different orientations. The rotor (4) balances itself via the rotor-balance plate (412) being positioned in front of and behind the outer rotor layers (413). The rotor (4) is fixed to the outer housing body (6) in the two-part coupling process during mounting. In one embodiment of the invention, the rotor (4) enables iron losses in the stator body (21) and its own sheet metal to be minimized and vibration-noise to be reduced by being coupled to the stator (2) via a sheet metal adhesive. The rotor (4) improves the mounting and adhesion properties of the inner diameters of its own sheets to the rotor shaft (41) by being produced with a serrated tooth structure. In the preferred embodiment of the invention, the rotor layer (413) reduces torque ripple by means of the V-shaped design of the magnet pockets thereon and reduces mechanical stabilization and thermal resistance by using potting in fixing the magnets thereon. The rotor layer (413) has notches on the q-axis that will increase high-speed performance in the realization of torque optimization located on the d and q axes that have an important role in interior magnet electric motors and enables higher torque and lower torque ripple at high speeds by means of the notches thereon. The rotor layer (413) enables higher torque to be obtained at high speeds compared to the non-notched structure via the q-axis notch thereon; the q-axis inductance to be reduced; and the torque ripple at high speeds to be reduced. The rotor layer (413) has a lug structure optimized in such a way as to minimize torque ripple. The rotor layer (413) enables the flux leakage of the magnets thereon to be minimized by optimizing the barrier thickness of 16 magnets on the d-axis so as to withstand the centrifugal force at the maximum speed value. The rotor layer (413) enables the angle between the 16 magnets thereon to be optimized in order to obtain the highest torque. The rotor layers (413) reduce torque ripple by having V-barriers and strengthen the mechanical integrity of the rotor by the presence of 8 interlocks between the V-barriers, in the center orientation of the rotor lamination web, at the level of the lower paddle of the magnet pockets, in such a way as not to affect the magnetic flux paths.

[0073] The outer housing body (6) included in the inventive machine (1) is produced in such a way as to be suitable for different inverter and transmission configurations. The outer housing body (6) provides cooling liquid sealing by being precisely mounted with the cooling channels in the stator (2). The outer housing body (6) is in a structure that enables the motor to be suitable for different resolver packages.

[0074] Industrial Application of the Invention The inventive machine (1) is formed by mounting the outer housing body (6), the rotor (4), the stator (2) and the inner housing body (3) to each other. The inner housing body (3) respectively comprises at least one gasket (32), at least one bearing (31) between the first and second retaining rings (311, 312) and a cooling jacket. The stator (2) comprises a stator body (21) on the outermost part and a copper winding (22) and end-winding (23) on the inner part. Cooling channels are located on the outer surface of the stator (2). The stator (2) enables the magnetic flux leakage increase to be prevented at the point where the magnetic material reaches saturation by using a round wire type winding. The stator (2) enables a rotating magnetic field required for the rotation of the rotor layers (413) wherein the magnets are embedded to be created by the rotating magnetic field formed by the copper windings, and the magnetic flux coming from the rotor (4) to be transferred back to the rotor (4). The rotor (4), the rotor shaft (41), the resolver shaft (411), the rotor-balance plate (412) and the rotor layers (413) are positioned on the stator (2). There are 16 magnets embedded in each of the rotor layers (413). The rotor layers (413) are positioned next to each other in a way that they are offset from each other by a certain degree. With the q-axis notch located in the rotor layer (413), it is enabled to obtain higher torque at high speeds compared to the structure without notch, to reduce the q-axis inductance, and to reduce the torque ripple at high speeds. Furthermore, torque ripple is reduced by the use of V-barriers in the rotor layer (413). The rotor layers (413) enable torque ripple to be reduced by the presence of 8 interlocks between the V-barriers, in the center orientation of the rotor (4) lamination web, at the level of the lower paddle of the magnet pockets, in such a way as not to affect the magnetic flux paths. The rotor (4) components of the machine are positioned in the space enclosed by the mounting of the inner and outer housing bodies (3,6) to each other. Furthermore, it is enabled to carry the current leaving the inverter on 4 separate parallel paths in order to meet the current requirements in the machine (1).

[0075] With the inventive machine (1), it is enabled to realize the optimization of the stator (2) using a round wire type winding in order to prevent the limitation of the torque increase upon the increase of magnetic flux leakage at the point where the magnetic material reaches saturation; to add the respective area to the slot by avoiding the tooth area inefficiency in the parallel slot technique by using a parallel tooth configuration for more efficient use of flux paths; to increase the torque density in the machine (1) upon placing more copper in the slot by using a parallel tooth configuration for more efficient use of flux paths; to obtain higher cooling performance as a result of the reduction of the thermal resistance between the slot cooling duct upon placing more copper in the air gaps in the slot; to use a cooling system with a high heat transfer coefficient in the electric machine (1) in order to remove the generated high heat rejection from the electric machine body and to obtain a homogeneous temperature distribution below the critical temperature value in the subcomponents of the machine (1).

[0076] Within these basic concepts; it is possible to develop various embodiments of the inventive “A System (1) for Adjusting the Gear Position Automatically”; the invention cannot be limited to examples disclosed herein and it is essentially according to claims.

Claims

CLAIMS1. An electric machine (1) optimized for propulsion systems in electric vehicles which enables the electric vehicle to have high thrust; can operate at high torque and high speed; can be mechanically mounted on the vehicle via a plurality of different transmission types and a plurality of different inverter circuits; and can operate in harmony with land vehicles, aircrafts and vessels so as to provide different combinations of speed, torque and power characterized by at least one stator (2) which comprises at least one stator body (21) that has a fixed structure in the form of a cylinder on its outermost side and is hollow inside; has the copper winding (22) and the end- winding (23) on the inner part of the stator body (21); creates a rotating magnetic field therein by means of the copper windings (22); has a plurality of locking plate washers (211) and a plurality of spring washers (212) on its inner part; enables the fundamental component of the back-emf to be maximized and the end- winding (23) length to be shortened via distributed winding in a 48 slot, 8 pole configuration and integral slot pitch factor; enables homogeneous temperature distribution on its surface by means of the cooling channels thereof spirally moving the cooling liquid in a tangential way around its outer surface; enables the inverter switching frequency to be increased to the high speeds required by vehicle requirements via a 48 slot, 8 pole configuration and the reduction of noise vibration harshness with the determined ratio of 48 / 8 compared to different slot / pole ratios; at least one inner housing body (3) which is compatible with the cylindrical structure of the stator (2) and enables the stator (2) to be fitted into its inner part; has at least one gasket (32), at least one first retaining ring (311), at least one second retaining ring (312) and at least one bearing (31); and has a cooling jacket outer surface thereof; at least one rotor (4) which has a rotating structure; has a plurality of rotor layers (413), each having a plurality of magnets embedded therein; comprises atleast one resolver shaft (411) on the rotor shaft (41), a plurality of rotor-balance plates (412) and a plurality of rotor layers (413) in the center of the rotor-balance plates (412); and acts as a generator when its magnetic field is ahead of the magnetic field of the stator (2) and as a motor when its magnetic field is behind the magnetic field of the stator (2); at least one rotor-resolver interface (5) which enables the resolver to be connected to the rotor (4), and is suitable for the use of different resolver models; at least one outer housing body (6) which enables the inner housing body (3) to be positioned on its inner part; enables the jacket on the outer surface of the inner housing body (3) to be covered by framing the outer surface of the inner housing body (3); and has an access section for busbar and resolver cables; at least one outer housing lid (7) which is positioned on the outer side of the outer housing body (6); and comprises at least one outer housing cap (71) that enables electrical interfaces to reach the inverter and to be protected; at least one outer housing gasket (8) which provides sealing between the outer housing lid (7) and the outer housing body (6) and environmental protection; at least one resolver stator (9) which comprises primary exciter and secondary cosine and sine windings and enables the primary exciter winding and rotor (4) to form a transformer; enables the instantaneous angular position and angular speed of the motor to be measured by means of the voltage induced in the rotor (4) winding being subsequently induced in the cosine and sine windings in the stator (2); and provides the closed-cycle torque and speed control required in driving the motor upon transfer of the angular position and speed to the inverter side; at least one resolver- stator interface (10) which enables the resolver to be connected to the outer housing body (6); at least one resolver rotor (11) which enables instantaneous angular position and angular speed of the motor to be measured by means of the voltage that varies depending on the angle by inducing voltage in the cosine and sine windings in the resolver stator (9) upon rotation of the rotor shaft (41); and provides the closed-cycle torque and speed control required in driving the motor upon transfer of the instantaneous angular position and speed to the inverter side; a plurality of first screws (12) of fhc-M8-35 type, which enable the outer housing body (6) to be fixed to the inner housing body (3) by being passed through the holes located on the outer surfaces of the outer housing body (6) and the inner housing body (3); a plurality of second screws (13) of ISO7380 M4xl6 type, which enable the outer housing body (6) to be fixed to the inner housing body (3) by being passed through the holes located on the outer housing lid (7) side of the outer housing body (6); a plurality of third screws (14) of ISO7380 M4x8 type, which enable the resolver to be fixed to the outer housing body (6); and a plurality of fourth screws (15) of type ISO7380 M5xl2, which enable the outer housing lid (7) and the outer housing gasket (8) to be fixed to the outer housing body (6).

2. An electric machine (1) optimized for propulsion systems in electric vehicles according to Claim 1; characterized by the stator (2) which enables the magnetic flux leakage increase to be prevented at the point where the magnetic material reaches saturation by using a round wire type winding.

3. An electric machine (1) optimized for propulsion systems in electric vehicles according to Claim 1 or 2; characterized by the stator (2) which uses a parallel tooth configuration suitable for the round wire winding.

4. An electric machine (1) optimized for propulsion systems in electric vehicles according to any one of the preceding claims; characterized by the stator body (21) which strengthens the mechanical integrity by being coupled linearly along the stator (2) length via external laser welding at the points that will not affect the magnetic flux paths.

5. An electric machine (1) optimized for propulsion systems in electric vehicles according to any one of the preceding claims; characterized by the stator (2) which enables the inefficiency of the tooth area in the parallel slot technique to be prevented by using the parallel tooth configuration in more efficient use of the flux paths and enables the said area to be added to the slots above it, and the torque density in the motor to be increased by placing more copper in the slots in the parallel tooth configuration.

6. An electric machine (1) optimized for propulsion systems in electric vehicles according to any one of the preceding claims; characterized by the stator(2) which removes the generated high heat rejection from the inner housing body(3) and the outer housing body (6) by enabling a higher cooling performance to be obtained by enabling the thermal resistance between the slot cooling duct to be reduced by placing more copper in the air gaps in the slots thereon.

7. An electric machine (1) optimized for propulsion systems in electric vehicles according to any one of the preceding claims; characterized by the stator (2) which is fixed to the inner housing body (3) upon the realization of a two-part coupling during mounting.

8. An electric machine (1) optimized for propulsion systems in electric vehicles according to any one of the preceding claims; characterized by the stator (2) which enables noise and vibration to be reduced by using an interlock between the back core area of each lamination sheet thereon.

9. An electric machine (1) optimized for propulsion systems in electric vehicles according to any one of the preceding claims; characterized by the stator (2) which enables the heat transfer and cooling liquid pressure drop value to be kept within the desired limit via the sectional and projection geometries of the cooling channel thereon.

10. An electric machine (1) optimized for propulsion systems in electric vehicles according to any one of the preceding claims; characterized by the stator (2) which is suitable for being optimized by adjusting the width and depth of the cooling channel structure thereon according to different cooling needs.

11. An electric machine (1) optimized for propulsion systems in electric vehicles according to any one of the preceding claims; characterized by the locking plate washers (211) which fix the bearing (31) to the stator (2) together with the spring washers (212).

12. An electric machine (1) optimized for propulsion systems in electric vehicles according to any one of the preceding claims; characterized by the stator (2) which enables the thickness of the copper windings (22) carrying the current to be reduced by enabling the currents to be transmitted in 4 parallel paths via the copper winding (22) structure thereof, and the length of the end-winding to be reduced by enabling the bendability of the copper windings (22) to be increased; and enables the loss increases that the alternating current frequency may cause with the decrease in the cable sectional area to be prevented and the copper filling ratio (slot fill factor) in the slots thereon to be increased.

13. An electric machine (1) optimized for propulsion systems in electric vehicles according to any one of the preceding claims; characterized by the copper windings (22) which realize the current requirements by enabling the current leaving the inverter to be carried in 4 separate parallel paths as a result of the winding of the said copper wire into the slots of the stator (2) for 16 turns by enabling the quarter of each phase current to be carried upon the parallel connection of 10 copper wires during winding.

14. An electric machine (1) optimized for propulsion systems in electric vehicles according to any one of the preceding claims; characterized by the inner housing body (3) which enables a homogeneous temperature distribution below thecritical temperature value in the subcomponents of the engine to be obtained by creating a cooling system with a high heat transfer coefficient as a result of the use of the cooling jacket located on the outer surface thereof included in the inventive machine (1) together with the cooling channels in the stator (2).

15. An electric machine (1) optimized for propulsion systems in electric vehicles according to any one of the preceding claims; characterized by the bearing (31) which prevents possible inductive currents by being used as electrically isolated type on the resolver side.

16. An electric machine (1) optimized for propulsion systems in electric vehicles according to any one of the preceding claims; characterized by the bearing (31) which is protected against possible capacitive currents that may occur due to the protection of the inner race of the transmission side with a conductive radial seal.

17. An electric machine (1) optimized for propulsion systems in electric vehicles according to any one of the preceding claims; characterized by the rotor (4) which comprises 6 rotor layers (413) that are offset from each other by a certain degree in the process of reducing torque ripple and are in a structure with 3 different orientations.

18. An electric machine (1) optimized for propulsion systems in electric vehicles according to any one of the preceding claims; characterized by the rotor (4) which balances itself via the rotor-balance plate (412) being positioned in front of and behind the outer rotor layers (413).

19. An electric machine (1) optimized for propulsion systems in electric vehicles according to any one of the preceding claims; characterized by the rotor (4) which is fixed to the outer housing body (6) in the two-part coupling process during mounting.

20. An electric machine (1) optimized for propulsion systems in electric vehicles according to any one of the preceding claims; characterized by the rotor (4) which enables iron losses in the stator body (21) and its own sheet metal to be minimized and vibration-noise to be reduced by being coupled to the stator (2) via a sheet metal adhesive.

21. An electric machine (1) optimized for propulsion systems in electric vehicles according to any one of the preceding claims; characterized by the rotor (4) which improves the mounting and adhesion properties of the inner diameters of its own sheets to the rotor shaft (41) by being produced with a serrated tooth structure.

22. An electric machine (1) optimized for propulsion systems in electric vehicles according to any one of the preceding claims; characterized by the rotor layer (413) which reduces torque ripple by means of the V-shaped design of the magnet pockets thereon and reduces mechanical stabilization and thermal resistance by using potting in fixing the magnets thereon.

23. An electric machine (1) optimized for propulsion systems in electric vehicles according to any one of the preceding claims; characterized by the rotor layer (413) which has notches on the q-axis that will increase high-speed performance in the realization of torque optimization located on the d and q axes that have an important role in interior magnet electric motors and enables higher torque and lower torque ripple at high speeds by means of the notches thereon.

24. An electric machine (1) optimized for propulsion systems in electric vehicles according to Claim 23; characterized by the rotor layer (413) which enables higher torque to be obtained at high speeds compared to the non-notched structure via the q-axis notch thereon; the q-axis inductance to be reduced; and the torque ripple at high speeds to be reduced.

25. An electric machine (1) optimized for propulsion systems in electric vehicles according to any one of the preceding claims; characterized by the rotor layer (413) which has a lug structure optimized in such a way as to minimize torque ripple.

26. An electric machine (1) optimized for propulsion systems in electric vehicles according to any of the Claim 23 to 25 ; characterized by the rotor layer (413) which enables the flux leakage of the magnets thereon to be minimized by optimizing the barrier thickness of 16 magnets on the d-axis so as to withstand the centrifugal force at the maximum speed value.

27. An electric machine (1) optimized for propulsion systems in electric vehicles according to any one of the preceding claims; characterized by the rotor layer (413) which enables the angle between the 16 magnets thereon to be optimized in order to obtain the highest torque.

28. An electric machine (1) optimized for propulsion systems in electric vehicles according to any one of the preceding claims; characterized by the rotor layer (413) which reduce torque ripple by having V-barriers and strengthen the mechanical integrity of the rotor by the presence of 8 interlocks between the V- barriers, in the center orientation of the rotor lamination web, at the level of the lower paddle of the magnet pockets, in such a way as not to affect the magnetic flux paths.

29. An electric machine (1) optimized for propulsion systems in electric vehicles according to any one of the preceding claims; characterized by the outer housing body (6) which is produced in such a way as to be suitable for different inverter and transmission configurations.

30. An electric machine (1) optimized for propulsion systems in electric vehicles according to any one of the preceding claims; characterized by the outer housing body (6) which provides cooling liquid sealing by being precisely mounted with the cooling channels in the stator (2).

31. An electric machine (1) optimized for propulsion systems in electric vehicles according to any one of the preceding claims; characterized by the outer housing body (6) which is in a structure that enables the motor to be suitable for different resolver packages.

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