Double-disc and double-ring stator mixed magnetic flux permanent magnet motor

Abstract

The invention provides a double-disc-double-ring stator hybrid magnetic flux permanent magnet motor. The double-disc-double-ring stator hybrid magnetic flux permanent magnet motor comprises a double-disc-double-ring stator, H-shaped block iron cores I, II and III, an outer rotor I and II, a middle rotor, an annular winding and a direct cooling water jacket, three types of H-shaped block iron cores I, II and III are arranged by using silicon steel lamination structures in three shapes, and the double-disc-double-ring stator is of an integrated combined structure of the three types of H-shaped block iron cores I, II and III. The double-disc stator I and the double-disc stator II are respectively provided with an inner ring stator I and an outer ring stator I and an outer ring stator II, and the double-disc-double-ring stator support is arranged in the middle of an inner ring between the inner ring stator I and the inner ring stator II. A middle rotor is arranged between the double-disc stator I and the double-disc stator II, and an outer rotor I and an outer rotor II are arranged outside the double-ring stator I and the double-ring stator II. An endless annular winding is adopted, and a direct cooling water jacket is arranged on the periphery of the annular winding. A direct cooling water jacket, a stator bracket and a stator periphery constraint are arranged by using a heat-conducting carbon fiber-resin composite material. By using the structure, the torque density of the motor is improved.

Description

A hybrid flux permanent magnet motor with a dual-disc and dual-ring stator Technical Field

[0001] This invention relates to the field of hybrid flux motor technology, and in particular to a hybrid flux permanent magnet motor with a dual-disc-dual-ring stator. Background Technology

[0002] Radial and axial flux permanent magnet motors have wide applications, and research results in motor topology, analysis methods, and structural optimization are relatively abundant. With the improvement of permanent magnet motor topology and the advancement of technology, axial-radial hybrid flux permanent magnet motors, leveraging their advantages in power density and dynamic stability, have enormous application potential. A novel dual-axial-dual-radial four-rotor hybrid flux permanent magnet motor completely surrounds the four surfaces of the stator with four rotors. The permanent magnets on each surface have the same polarity, generating torque in all four directions. This achieves endless windings, significantly improving winding utilization and the motor's torque output capability.

[0003] The hybrid flux structure design using silicon steel laminations can improve the heat dissipation performance of the stator core and increase the efficiency and power density of permanent magnet motors. The hybrid flux motor with segmented cores offers flexible design, reduces iron losses by 15-30%, increases torque by 5%, improves efficiency by 5%, and lowers temperature by 5-10℃. It also boasts advantages such as high strength, high precision, and high torque density, making it suitable for hub motor applications.

[0004] High thermal conductivity carbon fiber composites are made by combining carbon fiber as reinforcement with other materials with excellent thermal conductivity. This material not only has the characteristics of being lightweight, high-strength, vibration-damping, and high-temperature resistant, but also has excellent thermal conductivity, which can effectively transfer heat from high-temperature areas to low-temperature areas, and can be applied to the structural design of hub motors.

[0005] Chinese patents CN 105703583 A, CN 120074147 A, and CN 110120716 A provide several hybrid flux permanent magnet motors with different structures.

[0006] CN 105703583 A discloses a multi-stator hybrid magnetic circuit permanent magnet synchronous motor and method, including a radial stator, an axial stator, and a rotor. The rotor is fitted inside the radial stator, and an axial stator is provided at one or both ends of the rotor, so that the motor generates torque in both the radial and axial directions, forming a hybrid magnetic circuit. This invention improves the utilization rate of motor materials and reduces the weight of the motor, but the winding ends of the motor occupy too much space, affecting heat dissipation performance.

[0007] CN 120074147 A provides a radially arranged multi-phase multi-ring co-directional annular winding radial axial flux permanent magnet motor. The stator adopts a co-directional annular winding form, and the coil currents at corresponding positions of adjacent stators are in opposite positive directions. Furthermore, the annular intermediate core is removed. In addition, a disc-type axial rotor is added to the outside of the radial flux motor. The motor has low iron loss and eddy current loss, and the output torque can be improved by utilizing the annular winding. However, the structure of the motor still needs to be improved.

[0008] CN 110120716 A discloses a combined array type external rotor axial-radial hybrid flux permanent magnet motor, including an external rotor and multiple modular T-shaped stators. The T-shaped segmented iron core is made of soft magnetic composite material processed by powder metallurgy. The T-shaped segmented iron core has two axial stator teeth and a central radial stator tooth. This invention can improve the internal space utilization of the motor, but the saturation magnetic induction intensity is relatively low.

[0009] This invention employs three shapes of silicon steel laminated structures, and the double-disc-double-ring stator is designed as an integrated combination structure of three types of H-shaped segmented iron cores to improve the power / torque density of the motor. Summary of the Invention

[0010] The purpose of this invention is to design a hybrid flux permanent magnet motor with a double-disc and double-ring stator, comprising: H-shaped segmented iron cores I, II, and III; a double-disc stator I and II; an inner ring stator I and II; an outer ring stator I and II; an outer rotor I and II; a middle rotor; an annular winding; a core column III; a stator support; and a main shaft. The invention utilizes three shapes of silicon steel laminated structures to set up three types of H-shaped segmented iron cores I, II, and III. The double-disc and double-ring stator is an integrated combination structure of the three types of H-shaped segmented iron cores I, II, and III. The double-disc stator I and II are configured as two single-disc stators with identical structures. The inner ring stator I and II have similar structures to the outer ring stator I and II. The core column III is positioned between the double-ring stators I and II. A double-disc, double-ring stator support is disposed in the middle of the inner ring of the inner ring stator I and II; a middle rotor is disposed between the double-disc stators I and II, and an outer rotor I and II is disposed on the outside of both the inner and outer ring stators I and II; multiple three-stator teeth I and II and multiple core posts I and II are respectively disposed on the outer and inner ring stators I and II, the three-stator teeth I and II are configured with a hybrid flux structure, and the core posts I, II, and III are all provided with annular windings, the annular windings have no ends, and the annular windings are surrounded by a direct cooling water jacket; the direct cooling water jacket, the stator support, and the peripheral constraints of the double-disc, double-ring stator are provided using thermally conductive carbon fiber-resin composite material. The double-disc, double-ring stator structure can greatly improve the winding utilization rate and torque density.

[0011] Double-disc-double-ring stator hybrid flux circuit: 1. Using H-shaped segmented iron cores I and III, the hybrid flux circuit for setting the axial right stator tooth I (outer ring) on ​​the single-disc stator I (similar to setting the axial right stator tooth I (inner ring) on ​​the single-disc stator I using H-shaped segmented iron cores II and III is as follows: (a) Using H-shaped segmented iron core I: Axial right stator tooth I (outer ring) on ​​the single-disc stator I → air gap → Axial right rotor I (outer ring) on ​​the middle rotor (Ring) → Axial left rotor II (outer ring) on ​​the middle rotor → Air gap → Axial left stator tooth II (outer ring) on ​​the single disk stator II → Core column I (outer ring) on ​​both sides of the axial left stator tooth II on the single disk stator II → Adjacent axial left stator teeth II (outer ring) on ​​both sides of the axial left stator tooth II on the single disk stator II → Air gap → Adjacent axial left rotor II (outer ring) on ​​both sides of the axial left rotor II on the middle rotor → Adjacent axial right rotor I on both sides of the middle rotor (a) Using H-shaped segmented core III: Axial right stator teeth I (outer ring) on ​​both sides of single-disc stator I → Axial right stator teeth I (outer ring) on ​​both sides of single-disc stator I → Axial right stator teeth I (outer ring) on ​​both sides of single-disc stator I; (b) Using H-shaped segmented core III: Axial right stator teeth I (outer ring) on ​​single-disc stator I → Air gap → Axial right rotor I (outer ring) on ​​middle rotor → Middle Rotor upper axial left rotor II (outer ring) → air gap → single disk stator II upper axial left stator tooth II (outer ring) → core column III → single disk stator II upper axial left stator tooth II (inner ring) → air gap → middle rotor upper axial left rotor II (inner ring) → middle rotor upper axial right rotor I (inner ring) → air gap → single disk stator I upper axial right stator tooth I (inner ring) → core column III → single disk stator I upper axial right stator tooth I (outer ring).

[0012] 2. Using H-shaped segmented iron cores I and III, the mixed magnetic flux circuit for setting the axial left stator tooth I (outer ring) on ​​the single-disc stator I (similar to setting the axial left stator tooth I (inner ring) on ​​the single-disc stator I using H-shaped segmented iron cores II and III is as follows: (a) Using H-shaped segmented iron core I: Axial left stator tooth I (outer ring) on ​​the single-disc stator I → air gap → Axial left rotor I (outer ring) → Axial left rotor I adjacent on both sides of axial left rotor I (outer ring) → air gap → Axial left stator tooth I adjacent on both sides of axial left stator I on the single-disc stator I (Outer ring) → Core column I on both sides of the axial left stator tooth I on the single disk stator I (outer ring) → Axial left stator tooth I on the single disk stator I (outer ring); (b) Using H-shaped segmented core III: Axial left stator tooth on the single disk stator I (outer ring) → Air gap → Axial left rotor I (outer ring) → Axial left rotor I (inner ring) at the corresponding position on the single disk stator I → Air gap → Axial left stator tooth I (inner ring) at the corresponding position on the single disk stator I → Core column III → Axial left stator tooth I (outer ring) on ​​the single disk stator I.

[0013] 3. Using H-shaped segmented iron core I, the mixed magnetic flux circuit of radial outer stator teeth I and II (outer ring) on ​​single disk stator I and II (similar to using H-shaped segmented iron core II to set radial inner stator teeth I and II (inner ring)) is as follows: Radial outer stator teeth I and II (outer ring) on ​​single disk stator I and II (radial inner stator teeth I and II (inner ring)) → peripheral air gap → peripheral radial outer rotor (outer ring) (peripheral radial inner rotor (inner ring)) → adjacent radial outer rotor (outer ring) on ​​both sides of the periphery (adjacent radial inner rotor (inner ring)) → peripheral air gap → adjacent radial outer stator teeth I and II (outer ring) on ​​both sides (adjacent radial inner stator teeth I and II (inner ring)) → core column iron core I (outer ring) on ​​both sides (core column iron core II (inner ring)) → radial outer stator teeth I and II (outer ring) on ​​single disk stator I and II (radial inner stator teeth I and II (inner ring)).

[0014] The beneficial effects of this invention are as follows: 1. The use of a double-disc-double-ring stator segmented core hybrid flux structure improves the torque output capability of the motor; 2. The use of a combination structure of silicon steel laminations of three shapes reduces iron loss and improves the efficiency of the motor; 3. The use of a distributed, endless ring winding structure improves the winding utilization rate and torque density; 4. The use of a direct cooling water jacket on the back of the ring winding improves the heat dissipation efficiency of the ring winding and stator core; 5. The use of thermally conductive carbon fiber composite material to set up the stator support, direct cooling water jacket and stator constraint improves strength, heat dissipation and vibration resistance.

[0015] Specifically, the present invention provides the following technical solution: a double-disc-double-ring stator hybrid flux permanent magnet motor, comprising: a double-disc-double-ring stator, H-shaped segmented iron cores I, II, and III, an outer rotor I and II, a middle rotor, an annular winding, a core column III, a direct cooling water jacket, a stator support, and a main shaft; three types of H-shaped segmented iron cores I, II, and III are arranged using silicon steel laminated structures of three shapes, and the double-disc-double-ring stator is set as an integrated combination structure of the three types of H-shaped segmented iron cores I, II, and III; two single-disc stators with the same structure are set as double-disc stator I and II, and an inner ring stator I and II and an outer ring stator I and II are respectively arranged on the double-disc stator I and II, and the inner ring stator I and II and the outer ring stator I and II have similar structures; the inner ring stator I and II and the outer ring stator I and II are similar in structure; the inner ring stator I and II and the outer ring stator I and II are similar in structure. The core column III is disposed between the outer ring stators I and II, and the double-disc-double-ring stator support is disposed in the middle of the inner ring between the inner ring stators I and II; the middle rotor is disposed between the double-disc stators I and II, and the outer rotor I and II are respectively disposed outside the inner ring stators I and II and the outer ring stators I and II; the inner ring stators I and II and the outer ring stators I and II are respectively provided with multiple three-stator teeth I and II and multiple core columns I and II, the three-stator teeth I and II are configured with a hybrid flux structure, the core columns I, II and III are provided with annular windings, and the annular windings are surrounded by a direct cooling water jacket; the direct cooling water jacket, the stator support, and the periphery of the double-disc-double-ring stators are constrained by thermally conductive carbon fiber-resin composite material. The hybrid flux structure of the double-disc-double-ring stators improves the torque output capability of the motor.

[0016] Preferably, the outer ring stator I and II, the inner ring stator I and II, and the three types of H-shaped segmented iron cores I, II, and III are arranged in an integrated combination structure; the three types of H-shaped segmented iron cores I, II, and III on the double-disc-double-ring stator are arranged as follows: (a) the core column I of the H-shaped segmented iron core I on the outer ring stator I and II is arranged in a horizontal ┗┛-shaped silicon steel lamination structure from the middle of the core column I to the middle of both ends and the radial outer side. The core column I of the H-shaped segmented iron core I is provided with vertical ┗┛ and ┏┓ shaped silicon steel lamination structures between the upper and lower parts of the core column I and the middle of both ends; the left and right ends of the H-shaped segmented iron core I on the outer ring stator III are combined to form the middle of the radial outer stator tooth III, and the upper and lower sides of the middle of the radial outer stator tooth III are provided with two ╚ and ╔ shaped silicon steel lamination structures; (b) the H-shaped segmented core I on the inner ring stator III The core column II of the iron core II is configured with a horizontal ┗┛-shaped silicon steel lamination structure between the middle of its core column II and the middle of both ends, and with a vertical ┗┛ and ┏┓-shaped silicon steel lamination structure between the upper and lower parts of the core column II of the H-shaped segmented iron core II and the upper and lower sides of both ends, respectively. The left and right ends of adjacent H-shaped segmented iron cores II on the inner ring stator III are combined to form the middle of the radial inner stator teeth III. The upper and lower sides are provided with two ╚ and ╔ shaped silicon steel lamination structures; (c) the core column III of the H-shaped segmented iron core III between the outer ring stator ⅠⅡ and the inner ring stator ⅠⅡ is provided with a ╚╝ and ╔╗ shaped silicon steel lamination combination structure at both ends; the periphery of the double disk-double ring stator is fixed by a thermally conductive carbon fiber-resin composite material structure and connected to the stator support, and the stator support is provided with a main shaft water inlet pipe and a water outlet pipe. The H-shaped segmented iron core ⅠⅡⅢ structure is used to reduce iron loss, reduce temperature rise and increase power density.

[0017] Preferably, the three stator teeth III on the outer ring stator III are configured as: radial outer stator teeth III, axial left stator teeth III, and axial right stator teeth III; the three stator teeth III on the inner ring stator III are configured as: radial inner stator teeth III, axial left stator teeth III, and axial right stator teeth III; the two ╚, ╔ shaped silicon steel laminations on the upper and lower sides of the radial outer stator teeth III and the two ╚, ╔ shaped silicon steel laminations on the upper and lower sides of the radial inner stator teeth III are configured as radial clamping plates; the gap between the H-shaped segmented iron cores III and III, and the thermally conductive carbon fiber-resin composite material are used to constrain the radial clamping plates and the stator support, and the double-disc-double-ring stator and the stator support are configured as an integrated constraint structure. The double-disc-double-ring stator constraint structure improves the structural strength and dynamic performance.

[0018] Preferably, the outer rotor III outside the outer ring stator III includes: a radial outer rotor III, an axial left rotor III, and an axial right rotor III; the outer rotor III outside the inner ring stator III includes: a radial inner rotor III, an axial left rotor III, and an axial right rotor III; a middle rotor is provided between the double-disc stators III, with the axial right rotor I and the axial left rotor II located on the left and right sides of the middle rotor, respectively, and the middle rotor has no iron core; the permanent magnets on the axial right rotor I and the axial left rotor II on the middle rotor are magnetized in opposite directions, and the outer ring stator III... The permanent magnets on the right-hand rotor I between the inner and outer ring stators I and II are magnetized in opposite directions, as are the permanent magnets on the left-hand rotor II between the outer and inner ring stators I and II. The middle rotor is connected to the rotor frame using a non-magnetic mounting bracket. The permanent magnets on the outer rotor I and II, and the two outer rotors outside the inner and outer ring stators I and II, are arranged with N and S poles spaced apart. The outer rotor I and II are fixed to the rotor frame, which is connected to the main shaft using bearings. The two outer rotors outside the outer and inner ring stators I and II surround the six surfaces of the double-disc-double-ring stator, generating torque in all six directions.

[0019] Preferably, the core columns I, II, and III of the double-disc-double-ring stator are all provided with the annular windings; the current directions of the annular windings at adjacent positions on the outer annular stator I II are opposite, the current directions of the annular windings at adjacent positions on the inner annular stator I II are opposite, and the current directions of the annular windings at corresponding positions on the outer annular stator I II and the inner annular stator I II are opposite; the current directions of the annular windings on the core column III at adjacent positions between the outer annular stator I II and the inner annular stator I II are opposite. The permanent magnets on the outer ring stator I and II, specifically the three stator teeth I and II, are magnetized in the same direction. Similarly, the permanent magnets on the inner ring stator I and II are magnetized in the same direction. The permanent magnets on adjacent teeth I and II on the outer ring stator I and II are magnetized in opposite directions, as are the permanent magnets on adjacent teeth I and II on the inner ring stator I and II. The permanent magnets on corresponding positions of the three stator teeth I and II on the outer ring stator I and II and the inner ring stator I and II are magnetized in opposite directions. This distributed, endless ring winding structure improves winding utilization and torque density.

[0020] Preferably, the annular winding is surrounded by a direct cooling water jacket, which is a closed structure. The direct cooling water jacket contains liquid cooling channels connected to form a circulating direct cooling system. The inlet and outlet pipes of the liquid cooling channels are connected to the spindle inlet and outlet pipes. The direct cooling water jacket and the liquid cooling channels are constructed using the thermally conductive carbon fiber-resin composite material. The direct cooling water jacket improves the heat dissipation performance of the excitation winding and stator core.

[0021] Preferably, the core column III is provided between the double-ring stators I and II, and the double-disc-double-ring stator bracket is located in the middle of the inner ring between the inner ring stators I and II. The stator bracket is fixedly connected to the main shaft. The main shaft is a hollow main shaft, which is used to connect the circuit and water circuit. The stator bracket has high strength, good heat dissipation, and good vibration resistance. Attached Figure Description

[0022] Figure 1. Schematic diagram of the stator-rotor structure of a permanent magnet motor; Figure 2. Schematic diagram of the three types of H-shaped segmented iron core structures; Figure 3. Schematic diagram of the double-disc-double-ring stator structure; Figure 4. Schematic diagram of the excitation winding liquid cooling channel structure.

[0023] Figure labels: 1-╚, ╔ shaped silicon steel lamination structure; 2-┗┛, ┏┓ shaped silicon steel lamination structure; 3- Axial right rotor I (middle rotor, inner ring); 4- Axial right stator tooth I (inner ring); 5-╚╝, ╔╗ shaped silicon steel lamination structure; 6- Axial left rotor I (inner ring); 7- Axial left stator tooth I (inner ring); 8- Axial left rotor I (outer ring); 9- Axial left stator tooth I (outer ring); 10- Axial right stator tooth I (outer ring); 11- Stator peripheral constraint; 12- Radial outer stator tooth I (outer ring); 13- Radial outer rotor I (outer ring); 14- Axial right rotor I (middle rotor, outer ring); 15- Non-magnetic fixing frame; 16- Axial left rotor II (middle rotor, outer ring); 17- Radial outer stator tooth II ( 18-Radial outer rotor II (outer ring); 19-Axial right rotor II (outer ring); 20-Axial right stator tooth II (outer ring); 21-Rotor core; 22-Axial left stator tooth II (outer ring); 23-Rotor frame; 24-Core column III; 25-Axial right stator tooth II (inner ring); 26-Axial left stator tooth II (inner ring); 27-Axial left rotor II (middle rotor, inner ring); 28-Axial right rotor II (inner ring); 29-Radial inner stator tooth II (inner ring); 30-Radial inner rotor II (inner ring); 31-Bearing; 32-Main shaft; 33-Stator support; 34-Main shaft inlet and outlet pipes; 35-Radial inner stator tooth I (inner ring); 36-Radial inner rotor I (inner ring); 37- H-shaped segmented iron core I and II; 38-H-shaped segmented iron core III; 39-Radial clamping plate; 40-Core column I and II; 41-Outer ring stator I and II; 42-Inner ring stator I and II; 43-Annular winding; 44-Double disk (-double ring) stator; 45-Liquid cooling water channel; 46-Direct cooling water jacket. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: The present invention relates to a hybrid flux permanent magnet motor with a double-disc-double-ring stator, mainly comprising: 1-╚, ╔ shaped silicon steel lamination structure; 2-┗┛, ┏┓ shaped silicon steel lamination structure; 3-Axial right rotor I (middle rotor, inner ring); 5-╚╝, ╔╗ shaped silicon steel lamination structure; 14-Axial right rotor I (middle rotor, outer ring); 15-Non-magnetic fixing frame; 16-Axial left rotor II (middle rotor, outer ring); 24-Core column III; 27-Axial left rotor II (middle rotor, inner ring); 33-Stator support; 34-Main shaft water inlet pipe, water outlet pipe; 37- H-shaped segmented iron core I and II; 38-H-shaped segmented iron core III; 39-Radial clamping plate; 40-Core column I and II; 41-Outer ring stator I and II; 42-Inner ring stator I and II; 43-Annular winding; 44-Double disk (-double ring) stator; 45-Liquid cooling water channel; 46-Direct cooling water jacket.

[0025] Referring to Figures 1-4, a hybrid flux permanent magnet motor with a double-disc-double-ring stator includes: a double-disc-double-ring stator 44, H-shaped segmented iron cores I, II, III 37, 38, an outer rotor I, II, an inner rotor 3, 14, 16, 27, an annular winding 43, a core column III 24, a direct cooling water jacket 46, a stator support 33, and a main shaft 32; the three types of H-shaped segmented iron cores I, II, III 37, 38 are arranged using three shapes of silicon steel laminations 1, 2, and 5, and the double-disc... - The double-ring stator 44 is configured as an integral combination structure of the three types of H-shaped segmented iron cores I, II, III, 37, and 38 (Figure 2); two single-disc stators with the same structure are configured as double-disc stators I, II, and 44, on which inner ring stators I, II, and 42 and outer ring stators I, II, and 41 are respectively provided, and the inner ring stators I, II, and 42 and the outer ring stators I, II, and 41 have similar structures (Figure 3); the inner ring stators I, II, and 42 are similar to the outer ring stators I, II, and 41. The core column Ⅲ24 is arranged between the outer ring stators ⅠⅡ41, and the double-disc-double-ring stator support 33 is arranged in the middle of the inner ring between the inner ring stators ⅠⅡ42; the middle rotors 3, 14, 16, and 27 are arranged between the double-disc stators ⅠⅡ44, and the outer rotors ⅠⅡ are respectively arranged outside the inner ring stators ⅠⅡ42 and the outer ring stators ⅠⅡ41 (Figure 1); multiple three-stator teeth ⅠⅡ and multiple core columns ⅠⅡ40 are respectively arranged on the inner ring stators ⅠⅡ42 and the outer ring stators ⅠⅡ41. The three-stator teeth ⅠⅡ are configured as a mixed magnetic flux structure. The annular winding 43 is arranged on the core columns ⅠⅡⅢ40 and 24, and the direct cooling water jacket 46 is arranged around the annular winding 43 (Figure 4); the direct cooling water jacket 46, the stator support 33, and the peripheral constraint 11 of the double-disc-double-ring stator are set using thermally conductive carbon fiber-resin composite material. By utilizing the hybrid flux structure of the double-disc-double-ring stator 44, the torque output capability of the motor is improved.

[0026] Double-disc-double-ring stator hybrid flux circuit (Figure 1, Figure 3): 1. Using H-shaped segmented iron cores I and III 37, 38, the axial right stator tooth I10 (outer ring) on ​​the single-disc stator I is set up (similar to using H-shaped segmented iron cores II and III 37, 38, the axial right stator tooth I (inner ring) on ​​the single-disc stator I is set up). The hybrid flux circuit is as follows: (a) Using H-shaped segmented iron core I 37: Axial right stator tooth I10 (middle and upper part of the outer ring, the same below; Figure 1) on the single-disc stator I → air gap →Axial right rotor I14 (outer ring) on ​​the upper part of the middle rotor →Axial left rotor II16 (outer ring) on ​​the upper part of the middle rotor →Air gap →Axial left stator tooth II22 (outer ring) on ​​the upper part of the single disc stator II →Core pillar I40 (outer ring) on ​​both sides of axial left stator tooth II22 on the upper part of the single disc stator II →Adjacent axial left stator teeth II (outer ring) on ​​both sides of axial left stator tooth II22 on the upper part of the single disc stator II →Air gap →Adjacent axial left rotor II (outer ring) on ​​both sides of axial left rotor II16 on the upper part of the middle rotor →Axial right rotor I14 on the middle rotor (a) Using H-shaped segmented core Ⅲ38: Axial right stator teeth Ⅰ10 on both sides of single disk stator Ⅰ (lower part of outer ring, the same below; Figure 1) → air gap → axial right rotor Ⅰ14 on the middle rotor ( Outer ring → Axial left rotor II16 (outer ring) on ​​the middle rotor → Air gap → Axial left stator tooth II22 (outer ring) on ​​the single disk stator II → Core column III24 → Axial left stator tooth II26 (inner ring) on ​​the single disk stator II → Air gap → Axial left rotor II27 (inner ring) on ​​the middle rotor → Axial right rotor I3 (inner ring) on ​​the middle rotor → Air gap → Axial right stator tooth I4 (inner ring) on ​​the single disk stator I → Core column III24 → Axial right stator tooth I10 (outer ring) on ​​the single disk stator I.

[0027] 2. Using H-shaped segmented iron cores I and III 37 and 38, the axial left stator tooth I9 (outer ring) on ​​the single-disc stator I is set up (similar to using H-shaped segmented iron cores II and III 37 and 38 to set up axial left stator tooth I7 (inner ring) on ​​the single-disc stator I) as follows: (a) Using H-shaped segmented iron core I 37: axial left stator tooth I9 (middle and upper part of the outer ring, the same below; Figure 1) on the single-disc stator I → air gap → axial left rotor I8 (outer ring) → adjacent axial left rotor I (outer ring) on ​​both sides of axial left rotor I8 → air gap → adjacent axial left rotor I (outer ring) on ​​both sides of axial left stator tooth I9 on the single-disc stator I (a) Using H-shaped segmented core Ⅲ38: Axial left stator tooth Ⅰ (outer ring) on ​​the single disk stator Ⅰ, core column Ⅰ (outer ring) on ​​both sides of the axial left stator tooth Ⅰ9 on the single disk stator Ⅰ → Axial left stator tooth Ⅰ9 (outer ring) on ​​the single disk stator Ⅰ; (b) Using H-shaped segmented core Ⅲ38: Axial left stator tooth 9 (lower part of the outer ring, the same below; Figure 1) on the single disk stator Ⅰ → air gap → Axial left rotor Ⅰ8 (outer ring) → Axial left rotor Ⅰ6 (inner ring) at the corresponding position on the single disk stator Ⅰ → air gap → Axial left stator tooth Ⅰ7 (inner ring) at the corresponding position on the single disk stator Ⅰ → core column Ⅲ24 → Axial left stator tooth Ⅰ9 (outer ring) on ​​the single disk stator Ⅰ.

[0028] 3. Using the H-shaped segmented iron core I37, the mixed magnetic flux circuit of radial outer stator teeth III12 and 17 (outer rings) on the single-disc stator III (similar to the radial inner stator teeth III35 and 29 (inner rings) using the H-shaped segmented iron core II37) is as follows: Radial outer stator teeth III12 and 17 (outer rings) (radial inner stator teeth III35 and 29 (inner rings)) on the single-disc stator III → peripheral air gap → peripheral radial outer rotor 13 and 18 (outer rings) (peripheral radial inner rotor) 36, 30 (inner ring) → adjacent radial outer rotors (outer ring) (adjacent radial inner rotors (inner ring)) → peripheral air gap → adjacent radial outer stator teeth I and II (outer ring) (adjacent radial inner stator teeth I and II (inner ring)) → core core I (outer ring) (core core II (inner ring)) → radial outer stator teeth I and II 12, 17 (outer ring) on ​​single disc stator I and II (radial inner stator teeth I and II 35, 29 (inner ring)).

[0029] Referring to Figures 2-3, the outer ring stator I II 41, the inner ring stator I II 42, and the three types of H-shaped segmented iron cores I II III 37 and 38 arranged in an integrated combination structure (Figure 3); the three types of H-shaped segmented iron cores I II III 37 and 38 on the double-disc-double-ring stator 44 are arranged as follows: (a) the core column I 40 of the H-shaped segmented iron core I 37 on the outer ring stator I II 41 is arranged in a horizontal ┗┛-shaped silicon steel lamination structure from the middle of the core column I 40 to the middle of both ends and the radial outer side. 2. The upper and lower parts of the core column I40 of the H-shaped segmented iron core I37 are respectively provided with vertical ┗┛ and ┏┓ shaped silicon steel lamination structures 2 between the upper and lower parts of the core column I40 to the middle of both ends; the left and right ends of the H-shaped segmented iron core I37 on the outer ring stator IⅡ41 are combined to form the middle of the radial outer stator teeth IⅡ12 and 17, and the upper and lower sides of the middle of the radial outer stator teeth IⅡ12 and 17 are provided with two ╚ and ╔ shaped silicon steel lamination structures 1 (Figure 2); (b) the H on the inner ring stator IⅡ42 The H-shaped segmented iron core II 37 has a horizontal ┗┛-shaped silicon steel lamination structure 2 between the middle of the core post II 40 and the middle of both ends, and between the upper and lower parts of the core post II 40 and the middle of both ends of the H-shaped segmented iron core II 37. The inner annular stator I II 42 has adjacent left and right ends of the H-shaped segmented iron core II 37 combined to form the middle of the radial inner stator teeth I II 29 and 35. The upper and lower sides are provided with two ╚ and ╔ shaped silicon steel lamination structures 1 (Figure 2); (c) the core column Ⅲ24 of the H-shaped segmented iron core Ⅲ38 between the outer ring stator ⅠⅡ41 and the inner ring stator ⅠⅡ42 is provided with ╚╝ and ╔╗ shaped silicon steel lamination combination structures 5 (Figure 2); the periphery of the double disk-double ring stator 44 is fixed by a thermally conductive carbon fiber-resin composite material structure and connected to the stator support 33, and the stator support 33 is provided with a main shaft water inlet pipe and a water outlet pipe 34. The H-shaped segmented iron core ⅠⅡⅢ37, 38 structure is used to reduce iron loss, reduce temperature rise and increase power density.

[0030] Referring to Figure 1, the three stator teeth I and II on the outer ring stator I and II 41 are configured as follows: radial outer stator teeth I and II 12 and 17, axial left stator teeth I and II 9 and 22, and axial right stator teeth I and II 10 and 20; the three stator teeth I and II on the inner ring stator I and II 42 are configured as follows: radial inner stator teeth I and II 29 and 35, axial left stator teeth I and II 7 and 26, and axial right stator teeth I and II 4 and 25; the two teeth on the upper and lower sides of the radial outer stator teeth I and II 12 and 17 are... The ╚, ╔ shaped silicon steel lamination structure 1 and the two ╚, ╔ shaped silicon steel lamination structures 1 on the upper and lower sides of the radial inner stator teeth ⅠⅡ29, 35 are configured as radial clamping plates 39; the gap between the H-shaped segmented iron cores ⅠⅡⅢ37, 38 is utilized, and the thermally conductive carbon fiber-resin composite material is used to set the stator peripheral constraint 11 between the radial clamping plate 39 and the stator support 33; the double-disc-double-ring stator 44 and the stator support 33 are configured as an integrated constraint structure. The double-disc-double-ring stator 44 constraint structure improves the structural strength and its dynamic performance.

[0031] Referring to Figure 1, the outer rotors I and II outside the outer annular stator I and II 41 include: radial outer rotors I and II 13 and 18, axial left rotors I and II 8 and 16, and axial right rotors I and II 14 and 19; the outer rotors I and II outside the inner annular stator I and II 42 include: radial inner rotors I and II 30 and 36, axial left rotors I and II 6 and 27, and axial right rotors I and II 3 and 28; the middle rotors 3, 14, 16, and 27 are arranged between the double-disc stators I and II 44, and the axial right rotors I and II 14 and the axial left rotors II 16 and 27 are arranged on the left and right sides of the middle rotors 3, 14, 16, and 27, respectively. The middle rotors 3, 14, 16, and 27 have no iron core; the axial right rotors I and II 14 and the axial left rotors II 16 and 27 are located on the middle rotors 3, 14, 16, and 27. The permanent magnets on 16 and 27 are magnetized in opposite directions. The permanent magnets on the right axial rotor I14 between the outer ring stators I and II 41 and the right axial rotor I3 between the inner ring stators I and II 42 are magnetized in opposite directions. The permanent magnets on the left axial rotor II16 between the outer ring stators I and II 41 and the left axial rotor II27 between the inner ring stators I and II 42 are magnetized in opposite directions. The middle rotors 3, 14, 16, and 27 are connected to the rotor frame 23 by a non-magnetic fixing bracket 15. The permanent magnets on the outer rotor I II outside the outer ring stators I and II 41 and the inner ring stators I and II 42 are arranged with N and S poles spaced apart. The outer rotor I II is fixed on the rotor frame 23. The rotor frame 23 is connected to the main shaft 32 by a bearing 31. The two outer rotors outside the outer ring stator I and II 41 and the inner ring stator I and II 42 surround the six surfaces of the double disk-double ring stator 44, generating torque in all six directions.

[0032] Referring to Figure 3, the core posts I, II, III 40 and 24 of the double-disc-double-ring stator 44 are all provided with annular windings 43; the current directions of the annular windings 43 at adjacent positions on the outer annular stator I, II 41 are opposite, the current directions of the annular windings 43 at adjacent positions on the inner annular stator I, II 42 are opposite, the current directions of the annular windings 43 at corresponding positions on the outer annular stator I, II 41 and the inner annular stator I, II 42 are opposite; the current directions of the annular windings 43 on the core post III 24 at adjacent positions between the outer annular stator I, II 41 and the inner annular stator I, II 42 are opposite. The permanent magnets on the outer ring stator III 41 have the same magnetization direction outside the three stator teeth III, and the permanent magnets on the inner ring stator III 42 have the same magnetization direction outside the three stator teeth III. The permanent magnets on the outer ring stator III 41 with adjacent teeth III have opposite magnetization directions, and the permanent magnets on the inner ring stator III 42 with adjacent teeth III have opposite magnetization directions. The permanent magnets on the outer ring stator III 41 and the inner ring stator III 42 with corresponding positions have opposite magnetization directions outside the teeth III. The distributed, endless ring winding structure 43 improves winding utilization and torque density.

[0033] Referring to Figure 4, the annular winding 43 is surrounded by a direct cooling water jacket 46, which is a closed structure. The direct cooling water jacket 46 contains liquid cooling channels 45, which are connected to form a circulating direct cooling system. The inlet and outlet pipes of the liquid cooling channels 45 are connected to the spindle inlet and outlet pipes 34. The direct cooling water jacket 46 and the liquid cooling channels 45 are constructed using the thermally conductive carbon fiber-resin composite material. The direct cooling water jacket 46 improves the heat dissipation performance of the excitation winding and stator core.

[0034] Referring to Figure 1, the core post Ⅲ24 is provided between the double-ring stators ⅠⅡ41 and 42. The double-disc-double-ring stator support 33 is located in the middle of the inner ring between the inner ring stators ⅠⅡ42. The stator support 33 is fixedly connected to the main shaft 32. The main shaft 32 is a hollow main shaft, which is used to connect the circuit and water circuit. The stator support 33 has high strength, good heat dissipation and vibration resistance.

Claims

1. A hybrid flux permanent magnet motor with a dual-disc and dual-ring stator, comprising: The system comprises a double-disc-double-ring stator, H-shaped segmented iron cores I, II, and III, an outer rotor I and II, a middle rotor, an annular winding, core columns I, II, and III, a direct cooling water jacket, a stator support, and a main shaft. Three types of H-shaped segmented iron cores I, II, and III are configured using silicon steel laminated structures of three different shapes. The double-disc-double-ring stator is an integrated combination structure of the three types of H-shaped segmented iron cores I, II, and III. Two single-disc stators with identical structures are configured as a double-disc stator I and II. An inner ring stator I and II and an outer ring stator I and II are respectively configured on the double-disc stator I and II, and the inner ring stator I and II and the outer ring stator I and II have similar structures. The core column III is disposed between the inner ring stator I and II and the outer ring stator I and II. The double-disc-double-ring stator support is disposed in the middle of the inner ring between the inner ring stator I and II. The middle rotor is disposed between the double-disc stator I and II. The outer rotor I and II are disposed on the outside of both the inner ring stator I and II and the outer ring stator I and II. The inner ring stator I and II and the outer ring stator I and II are respectively provided with multiple three-stator teeth I and II and multiple core columns I and II. The three-stator teeth I and II are configured with a hybrid magnetic flux structure. The core columns I, II and III are all provided with the annular winding. The annular winding is surrounded by the direct cooling water jacket. The direct cooling water jacket, the stator support and the periphery of the double-disc-double-ring stator are constrained by thermally conductive carbon fiber-resin composite material.

2. The hybrid flux permanent magnet motor with a dual-disc-dual-ring stator according to claim 1, characterized in that: The outer ring stator I and II, the inner ring stator I and II, and the three types of H-shaped segmented iron cores I, II, and III are arranged in an integrated combination structure; the three types of H-shaped segmented iron cores I, II, and III on the double-disc-double-ring stator are arranged as follows: (a) the core column I of the H-shaped segmented iron core I on the outer ring stator I and II is arranged in a horizontal ┗┛-shaped silicon steel lamination structure from the middle of the core column I to the middle of both ends and the radial outer side. The upper and lower parts of the core column I of the segmented iron core I are respectively provided with vertical ┗┛ and ┏┓ shaped silicon steel lamination structures between the upper and lower sides of the core column I at the middle of both ends; the left and right ends of the adjacent H-shaped segmented iron core I on the outer ring stator III are combined to form the middle of the radial outer stator tooth III, and the upper and lower sides of the middle of the radial outer stator tooth III are provided with two ╚ and ╔ shaped silicon steel lamination structures; (b) the H-shaped segmented iron core on the inner ring stator III The core column II of the Ⅱ is configured with a horizontal ┗┛-shaped silicon steel lamination structure from the middle of its two ends and the radial inner side. The core column II of the H-shaped segmented iron core II is configured with a vertical ┗┛ and ┏┓-shaped silicon steel lamination structure from the upper and lower parts of its core column II to the middle of its two ends. The left and right ends of the adjacent H-shaped segmented iron core II on the inner ring stator ⅠⅡ are combined to form the middle of the radial inner stator teeth ⅠⅡ. The upper and lower sides are provided with two ╚ and ╔ shaped silicon steel lamination structures; (c) the core column III of the H-shaped segmented iron core III between the outer ring stator ⅠⅡ and the inner ring stator ⅠⅡ is provided with a ╚╝ and ╔╗ shaped silicon steel lamination combination structure at both ends; the periphery of the double disk-double ring stator is fixed by a thermally conductive carbon fiber-resin composite material structure and connected to the stator support, and the stator support is provided with a main shaft water inlet pipe and a water outlet pipe.

3. The hybrid flux permanent magnet motor with a dual-disc-dual-ring stator according to claim 2, characterized in that: The three stator teeth III on the outer ring stator III are configured as: radial outer stator teeth III, axial left stator teeth III, and axial right stator teeth III; the three stator teeth III on the inner ring stator III are configured as: radial inner stator teeth III, axial left stator teeth III, and axial right stator teeth III; the two ╚, ╔ shaped silicon steel lamination structures on the upper and lower sides of the radial outer stator teeth III and the two ╚, ╔ shaped silicon steel lamination structures on the upper and lower sides of the radial inner stator teeth III are configured as radial clamping plates; the gap between the H-shaped segmented iron cores III and III, and the thermally conductive carbon fiber-resin composite material are used to set the constraint between the radial clamping plates and the stator support, and the double-disc-double-ring stator and the stator support are configured as an integrated constraint structure.

4. The hybrid flux permanent magnet motor with a dual-disc-dual-ring stator according to claim 1, characterized in that: The outer rotor III outside the outer annular stator III includes: a radial outer rotor III, an axial left rotor III, and an axial right rotor III; the outer rotor III outside the inner annular stator III includes: a radial inner rotor III, an axial left rotor III, and an axial right rotor III; a middle rotor is provided between the double-disc stators III, with the axial right rotor I and the axial left rotor II located on the left and right sides of the middle rotor, respectively, and the middle rotor has no iron core; the permanent magnets on the axial right rotor I and the axial left rotor II on the middle rotor are magnetized in opposite directions, and the outer annular stator III... The permanent magnets on the right axial rotor I between the inner ring stator I and II are magnetized in opposite directions. The permanent magnets on the left axial rotor II between the outer ring stator I and II are magnetized in opposite directions. The middle rotor is connected to the rotor frame using a non-magnetic fixing frame. The permanent magnets on the outer rotor I and II outside the inner ring stator I and II are arranged with N and S poles spaced apart. The outer rotor I and II are fixed on the rotor frame. The rotor frame is connected to the main shaft using bearings.

5. The hybrid flux permanent magnet motor with a dual-disc-dual-ring stator according to claim 1, characterized in that: The core columns I, II, and III of the double-disc, double-ring stator are all provided with ring windings; the current directions of adjacent ring windings on the outer ring stator I and II are opposite, the current directions of adjacent ring windings on the inner ring stator I and II are opposite, and the current directions of corresponding ring windings on the outer ring stator I and II and the inner ring stator I and II are opposite; the current directions of the ring windings on the core column III at adjacent positions between the outer ring stator I and II and the inner ring stator I and II are opposite; the outer... The permanent magnets on the outer sides of the three stator teeth I and II on the inner ring stator I and II are magnetized in the same direction. The permanent magnets on the outer ring stator I and II adjacent to the three stator teeth I and II are magnetized in opposite directions. The permanent magnets on the inner ring stator I and II adjacent to the three stator teeth I and II are magnetized in opposite directions. The permanent magnets on the outer ring stator I and II at corresponding positions of the three stator teeth I and II on the inner ring stator I and II are magnetized in opposite directions.

6. The hybrid flux permanent magnet motor with a dual-disc-dual-ring stator according to claim 1, characterized in that: The annular winding is surrounded by a direct cooling water jacket, which is a closed structure. The direct cooling water jacket is provided with a liquid cooling water channel, which is connected to form a circulating direct cooling system. The inlet and outlet pipes of the liquid cooling water channel are connected to the spindle inlet and outlet pipes. The direct cooling water jacket and the liquid cooling water channel adopt the thermally conductive carbon fiber-resin composite material structure.

7. The hybrid flux permanent magnet motor with a dual-disc-dual-ring stator according to claim 1, characterized in that: The core column III is provided between the double-ring stators I and II, and the double-disc-double-ring stator bracket is located in the middle of the inner ring between the inner ring stators I and II. The stator bracket is fixedly connected to the main shaft. The main shaft is a hollow main shaft, which is used to connect the circuit and water circuit.

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