Three-stator double-rotor disc motor

Abstract

The present invention discloses a three-stator dual-rotor disc motor, wherein the axial series disc motor comprises a first motor splicing module and a second motor splicing module, wherein the second motor splicing module is axially connected in series with the first motor splicing module, wherein the housing docking end of the first motor splicing module and the housing docking end of the second motor splicing module are openly arranged, so that two end covers and bearings and other parts can be reduced, thereby reducing the axial size of the three-stator dual-rotor disc motor, and the power density and torque density of the motor can be improved by connecting the modules in series. Moreover, in this solution, the dual-unit motors can be assembled in parallel to improve assembly efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of motors, and in particular to a three-stator double-rotor disc motor. Background Art

[0002] In the prior art, several independent motors are usually directly connected in series to increase the output power. This series connection method only involves simple series connection of the structure, which often makes the axial size of the structure after series connection larger, resulting in a more complex series structure of the motor. In high-power density and high-torque density application scenarios such as electric vehicles, it cannot meet the use requirements. Moreover, in the ordinary multi-motor series structure, multiple stators and rotors are assembled layer by layer like a sandwich, and cannot be installed in parallel. If there is a problem with the installation, all of them must be disassembled. Summary of the invention

[0003] The main purpose of the present invention is to provide a three-stator dual-rotor disc motor, which is arranged by modular splicing, and each module has no end cover at the splicing end, so as to reduce the axial size of the three-stator dual-rotor disc motor and improve the power density and torque density of the motor in series.

[0004] To achieve the above object, the present invention proposes a three-stator dual-rotor disc motor, comprising:

[0005] A first motor assembly module comprises a first housing, and a first stator assembly, a first rotor assembly and a first rotating shaft arranged in the first housing, wherein the first housing comprises a first annular housing and a first end cover arranged at one end of the first annular housing, and the first rotor assembly is arranged near an opening end of the first housing; and

[0006] The second motor assembly module comprises a second housing, and a second stator assembly, a second rotor assembly, a third stator assembly and a second rotating shaft arranged in the second housing, wherein the second housing comprises a second annular shell and a second end cover arranged at one end of the second annular shell, and the second rotor assembly is arranged between the second stator assembly and the third stator assembly;

[0007] The opening end of the first annular shell and the opening end of the second annular shell are butted against each other, and the first rotating shaft and the second rotating shaft are spliced ​​with each other.

[0008] Preferably, one end of the first rotating shaft is mounted in the mounting hole of the first end cover via a bearing; and one end of the second rotating shaft is correspondingly mounted in the mounting hole of the second end cover via a bearing.

[0009] Preferably, the three-stator dual-rotor disc motor further includes a water cooling pipeline system, and the water cooling pipeline system includes:

[0010] A first water channel, which is separately provided in the first end cover and the first annular shell;

[0011] a second water channel, which is in communication with the first water channel and is disposed in the second end cover and the second annular shell; and

[0012] The water inlet and the water outlet are arranged on the first housing or the second housing, and are communicated with the first water channel or the second water channel.

[0013] Preferably, the first housing further comprises a first cover plate, a plurality of first grooves extending in the circumferential direction and interconnected are formed on the outer side surface of the first end cover, and the first cover plate is arranged to cover the outer side surface of the first end cover to enclose the plurality of first grooves to form a part of the first water channel;

[0014] The second housing also includes a second cover plate, and a plurality of second grooves extending circumferentially and interconnected are formed on the outer side surface of the second end cover. The second cover plate is arranged to cover the outer side surface of the second end cover to enclose the plurality of second grooves to form a part of the second water channel.

[0015] Preferably, the butt end of the first annular shell is provided with a first interface communicating with the first water channel;

[0016] The butt end of the second annular shell is provided with a second interface of the second water channel;

[0017] The butt end of the first annular shell is butt-jointed with the butt end of the second annular shell, and the first interface is butt-jointed with the second interface.

[0018] Preferably, the first housing or the second housing is provided with terminals electrically connected to the first stator assembly, the first rotor assembly, the second stator assembly, the second rotor assembly and the third stator assembly, respectively, so as to control the first stator assembly, the first rotor assembly, the second stator assembly, the second rotor assembly and the third stator assembly, respectively, so that the three-stator double-rotor disc motor has multiple working modes.

[0019] Preferably, a mounting groove is provided at the butt end of the second rotating shaft, a threaded hole is provided at the bottom of the mounting groove, a through hole is provided through the first rotating shaft, the butt end of the first rotating shaft is inserted into the mounting groove, and is fixed to the threaded hole at the bottom of the mounting groove by a screw connection passing through the through hole.

[0020] Preferably, a first annular mounting groove is provided on the inner side surface of the first end cover, the first stator assembly comprises a first stator core and a first stator winding, the first stator core and the first stator winding are arranged in the first annular mounting groove and are potted by epoxy glue; and / or,

[0021] The inner side surface of the second end cover is provided with a second annular mounting groove, the second stator assembly comprises a second stator core and a second stator winding, the second stator core and the second stator winding are arranged in the second annular mounting groove and are potted by epoxy glue; and / or,

[0022] The third stator assembly includes two circular fixing plates with central openings, a plurality of third stator cores, a plurality of third stator windings and an inner matching annular plate. The two circular fixing plates are arranged opposite to each other and at intervals. The inner matching annular plate matches with the openings of the two circular fixing plates. The outer circumferential surfaces of the two circular fixing plates match with the inner side surfaces of the second housing. The two circular fixing plates, the inner matching annular plate and the second housing jointly enclose an annular installation cavity. The inner side surfaces of the two circular fixing plates are correspondingly provided with a plurality of positioning grooves arranged along the circumferential direction. The plurality of third stator cores are arranged in the annular installation cavity, and the two ends thereof match with the positioning grooves of the two circular fixing plates. The plurality of stator windings are correspondingly wound around the plurality of stator cores, and the annular installation cavity is filled with epoxy glue.

[0023] Preferably, the first rotor assembly, the second rotor assembly and the third rotor assembly each include:

[0024] A rotor support plate, wherein a circular mounting hole is provided in the middle of the rotor support plate for the first rotating shaft or the second rotating shaft to pass through, and the rotor support plate is provided with an annular mounting groove and a plurality of trapezoidal through holes, wherein the plurality of trapezoidal through holes are arranged along the circumference of the rotor support plate;

[0025] A rotor core, arranged in an annular shape and installed in the annular installation groove;

[0026] A plurality of permanent magnets are arranged correspondingly to the plurality of trapezoidal through holes.

[0027] Preferably, a hole wall of the circular mounting hole of the rotor support plate is provided with a limiting boss, and the first rotating shaft and the second rotating shaft are correspondingly provided with an annular step portion abutting and limiting with the limiting boss of the corresponding rotor support plate.

[0028] In the technical solution of the present invention, the butt end of the first housing and the butt end of the second housing are open, so that two end covers and bearing components can be reduced, thereby reducing the axial size of the three-stator double-rotor disc motor and improving the power density and torque density of the motor. In addition, a double-unit motor assembly process can be adopted, so that the double-unit motor can be assembled separately, thereby improving assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0030] Figure 1 A cross-sectional view of an embodiment of a three-stator dual-rotor disc motor provided by the present invention;

[0031] Figure 2 for Figure 1 A cross-sectional schematic diagram of a three-stator double-rotor disc motor before being spliced;

[0032] Figure 3 for Figure 2 An exploded schematic diagram of the second motor splicing module of the three-stator dual-rotor disc motor;

[0033] Figure 4 for Figure 1 A cross-sectional schematic diagram of a first motor assembly module of a central three-stator dual-rotor disc motor;

[0034] Figure 5 for Figure 1 A schematic cross-sectional view of the second motor assembly module of the central three-stator dual-rotor disc motor;

[0035] Figure 6 for Figure 5 A schematic diagram of the partial structure of the third stator assembly of the second motor splicing module;

[0036] Figure 7 for Figure 1 A partial schematic diagram of the first rotor assembly, the second rotor assembly or the third rotor assembly of the three-stator dual-rotor disc type.

[0037] Description of Figure Numbers:

[0038]

[0039]

[0040] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0043] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0044] The present invention provides a three-stator double-rotor disc motor. Figures 1 to 7 For an embodiment of the three-stator dual-rotor disc motor provided by the present invention, please refer to Figures 1 to 7 The three-stator dual-rotor disc motor 100 includes a first motor splicing module 1 and a second motor splicing module 2 .

[0045] See also Figure 1 and Figure 2 The first motor splicing module 1 includes a first housing 11, and a first stator assembly 12, a first rotor assembly 13 and a first rotating shaft 14 arranged in the first housing, wherein the first housing 11 includes a first annular housing 111, and a first end cover 112 arranged at one end of the first annular housing 111, and the first rotor assembly 13 is arranged near the opening end of the first housing 11.

[0046] The second motor assembly module 2 includes a second housing 21, and a second stator assembly 22, a second rotor assembly 23, a third stator assembly 24 and a second rotating shaft 25 arranged in the second housing 21, wherein the second housing 21 includes a second annular shell 211 and a second end cover 212 arranged at one end of the second annular shell 211, and the second rotor assembly 23 is arranged between the second stator assembly 22 and the third stator assembly 24;

[0047] The opening end of the first annular shell 111 and the opening end of the second annular shell 211 are butted against each other, and the first rotating shaft 14 and the second rotating shaft 25 are spliced ​​with each other.

[0048] The three-stator dual-rotor disc motor 100 provided by the present invention can, during production and assembly, first separately assemble the first motor splicing module 1 and the second motor splicing module 2, that is, the first motor splicing module 1 and the second motor splicing module 2 are assembled in parallel, and then spliced ​​after the first motor splicing module 1 and the second motor splicing module 2 are formed. Specifically, the open end of the first annular shell 111 is connected with the open end of the second annular shell 211, and the first rotating shaft 14 and the second rotating shaft 25 are spliced ​​with each other, thereby completing the assembly of the three-stator dual-rotor motor. The dual-unit motor assembly process is adopted, so that the dual-unit motor can be assembled separately, thereby improving the assembly efficiency.

[0049] In addition, in the three-stator dual-rotor disc motor 100 provided by the present invention, the butt end of the first housing 11 and the butt end of the second housing 21 are open, which can reduce two end covers and bearing A components, thereby reducing the axial size of the three-stator dual-rotor disc motor 100 and improving the power density and torque density of the motor.

[0050] Further, in this embodiment, please refer to Figure 2 and Figure 3 The second annular shell 211 is divided into two sections, specifically including a second annular shell first section 211a and a second annular shell second section 211b. In this way, the second motor splicing module 2 can be further decomposed into two modules for separate assembly.

[0051] In this embodiment, please refer to Figure 2 One end of the first rotating shaft 14 is installed in the mounting hole of the first end cover 112 through a bearing AA, and one end of the second rotating shaft 25 is correspondingly installed in the mounting hole of the second end cover 212 through a bearing A. That is, the first rotating shaft 14 and the second rotating shaft 25 are both rotatably installed at one end using the bearing A, and the other ends are spliced ​​with each other, without the need to set bearings A at both ends.

[0052] In this example, see Figure 2 and Figure 3 The three-stator dual-rotor disc motor 100 also includes a water cooling pipeline system, which includes a first water channel 31, a second water channel 32, a water inlet (not shown) and a water outlet (not shown), wherein the first water channel 31 is separately arranged on the first end cover 112 and the first annular shell 111, the second water channel 32 is connected to the first water channel 31, and is separately arranged on the second end cover 212 and the second annular shell 211, and the water inlet and the water outlet are arranged on the first casing 11 or the second casing 21, and are connected to the first water channel 31 or the second water channel 32. In this embodiment, the water cooling pipeline system of the three-stator dual-rotor disc motor 100 is separately arranged on the first motor splicing module 1 and the second motor splicing module 2, and is connected by splicing. Finally, a water inlet and a water outlet are arranged on the first motor splicing module 1 or the second motor splicing module 2, for example, on the second end cover 212 or the second annular shell 211 to centrally connect to an external water source, which makes it convenient to set up the water circuit and has a simple structure.

[0053] Further, in this embodiment, please refer to Figure 2 and Figure 3 The first housing 11 also includes a first cover plate 15, and a plurality of first grooves 311 extending circumferentially and interconnected are provided on the outer side surface of the first end cover 112. The first cover plate 15 is arranged to cover the outer side surface of the first end cover 112 to enclose the plurality of first grooves 311 to form a part of the first water channel 31. Therefore, a complex water channel structure (first grooves 311) can be first formed on the first end cover 112 by, for example, casting, and then the first cover plate 15 and the first end cover 112 can be assembled, for example, by screws, and a sealing ring is preferably arranged between the two, so as to facilitate the arrangement of a complex water channel structure on the first cover plate 15.

[0054] The second housing 21 also includes a second cover plate 26, and a plurality of second grooves 321 extending circumferentially and interconnected are provided on the outer side surface of the second end cover 212. The second cover plate 26 is arranged to cover the outer side surface of the second end cover 212 to enclose the plurality of second grooves 321 to form a part of the second water channel 32. Therefore, a complex water channel structure (second grooves 321) can be first formed on the second end cover 212 by, for example, casting, and then the second cover plate 26 and the second end cover 212 can be assembled, for example, by screws, and a sealing ring is preferably provided between the two, so as to facilitate the provision of a complex water channel structure on the second cover plate 26.

[0055] Further, in this embodiment, please refer to Figure 2 and Figure 3 The butt joint end of the first annular shell 111 is provided with a first interface (not shown) connected to the first water channel 31, and the butt joint end of the second annular shell 211 is provided with a second interface (not shown) of the second water channel 32. The butt joint end of the first annular shell 111 is butt jointed with the butt joint end of the second annular shell 211, and the first interface is butt jointed with the second interface. By setting interfaces (first interface and second interface) for docking, it is easier to achieve sealed docking, avoiding the problem of difficulty in achieving sealed docking due to docking over a large docking area.

[0056] In this example, see Figure 2 and Figure 3 The first housing 11 or the second housing 21 is provided with a terminal 4 (the terminal 4 is shown in the figure as being arranged in the first housing 11) which is electrically connected to the first stator assembly 12, the first rotor assembly 13, the second stator assembly 22, the second rotor assembly 23 and the third stator, respectively, so as to control the first stator assembly 12, the first rotor assembly, the second stator assembly 22, the second rotor assembly 23 and the third stator assembly 24, respectively, so that the three-stator dual-rotor disc motor 100 has multiple working modes.

[0057] When in use, some stator assemblies (the first stator assembly 12, the second stator assembly 22 and the third stator assembly 24) and rotor assemblies (the first rotor assembly 13 and the second rotor assembly 23) can be selected for external power supply, so that the three-stator dual-rotor disc motor 100 has multiple working modes corresponding to multiple working powers, and by centrally setting the terminal posts 4 of each stator assembly and rotor assembly on the second motor module, centralized management is carried out to facilitate wiring.

[0058] The first rotating shaft 14 and the second rotating shaft 25 are spliced ​​to transmit torque and increase power. The specific splicing method between the two is not limited. In this embodiment, a mounting groove 251 is provided at the butt end of the second rotating shaft 25, and a threaded hole 252 is provided at the bottom of the mounting groove 251. The first rotating shaft 14 is penetrated by a through hole 141. The butt end of the first rotating shaft 14 is inserted into the mounting groove 251 and fixed to the threaded hole 252 at the bottom of the mounting groove 251 by a screw connection passing through the through hole 141.

[0059] In this example, see Figure 4 and Figure 5, a first annular mounting groove 112a is provided on the inner side surface of the first end cover 112, the first stator assembly 12 includes a first stator core 121 and a first stator winding 122, the first stator core 121 and the first stator winding 122 are arranged in the first annular mounting groove 112a, and are potted with epoxy glue, by providing the first annular mounting groove 112a for the first stator assembly 12 to be installed and the two are potted with epoxy glue, so that the installation structure between the two is convenient and the contact area is large, so that the heat of the first stator assembly 12 is easily transferred to the first end cover 112, and then the heat is dissipated through the first end cover 112; and / or,

[0060] The inner side surface of the second end cover 212 is provided with a first annular mounting groove 212a, and the second stator assembly 22 includes a second stator core 221 and a second stator winding 222. The second stator core 221 and the second stator winding 222 are arranged in the first annular mounting groove 212a and are potted with epoxy glue. By providing the first annular mounting groove 212a for the installation of the second stator assembly 22 and potting the two with epoxy glue, the installation structure between the two is convenient and the contact area is large, which is convenient for transferring the heat of the second stator assembly 22 to the second end cover 212, and then dissipating the heat through the second end cover 212.

[0061] In this example, see Figure 5 and Figure 6 The third stator assembly 24 includes two circular fixing plates 241 with central openings, a plurality of third stator cores 242, a plurality of third stator windings 243 and an inner matching annular plate 244. The two circular fixing plates 241 are arranged opposite to each other and spaced apart. The inner matching annular plate 244 matches with the openings of the two circular fixing plates 241. The outer circumferential surfaces of the two circular fixing plates 241 match with the inner side surfaces of the second housing 21 (specifically, the first section 211a of the second annular housing). The two circular fixing plates 241, the inner matching annular plate 244 and the second housing 21 together enclose an annular installation cavity, the inner side surfaces of the two circular fixing plates 241 are correspondingly provided with a plurality of positioning grooves 241a arranged along the circumferential direction, the plurality of third stator cores 242 are arranged in the annular installation cavity, and the two ends thereof correspond to cooperate with the positioning grooves 241a of the two circular fixing plates 241, the plurality of stator windings are correspondingly wound around the plurality of stator cores, and the annular installation cavity is filled with epoxy glue, so that the third stator assembly 24 and the second housing 21 (specifically, in this embodiment, the first section 211a of the second annular shell) form a whole.

[0062] In this example, see Figures 5 to 7The first rotor assembly 13, the second rotor assembly 23 and the third rotor assembly all include a rotor support disk 51 and a plurality of permanent magnets 52. A circular mounting hole is provided in the middle of the rotor support disk 51 for the first rotating shaft 14 or the second rotating shaft 25 to pass through. The rotor support disk 51 is provided with a plurality of trapezoidal through holes 511. The plurality of trapezoidal through holes 511 are arranged along the circumference of the rotor support disk 51. The plurality of permanent magnets 52 are correspondingly arranged in the plurality of trapezoidal through holes 511.

[0063] In this example, see Figure 1 , Figure 5 and Figure 6 The hole wall of the circular mounting hole of the rotor support plate 51 is provided with a limiting boss 51a, and the first rotating shaft 14 and the second rotating shaft 25 are correspondingly provided with annular step portions 14a and 25a corresponding to the limiting boss 51a of the corresponding rotor support plate 51 for abutment and limiting.

[0064] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A three-stator double-rotor disc motor, characterized in that: include: A first motor assembly module comprises a first housing, and a first stator assembly, a first rotor assembly and a first rotating shaft arranged in the first housing, wherein the first housing comprises a first annular shell and a first end cover arranged at one end of the first annular shell, and the first rotor assembly is arranged near an opening end of the first housing; and The second motor assembly module comprises a second housing, and a second stator assembly, a second rotor assembly, a third stator assembly and a second rotating shaft arranged in the second housing, wherein the second housing comprises a second annular shell and a second end cover arranged at one end of the second annular shell, and the second rotor assembly is arranged between the second stator assembly and the third stator assembly; Wherein, the opening end of the first annular shell and the opening end of the second annular shell are butted against each other, and the first rotating shaft and the second rotating shaft are spliced ​​with each other; The first housing or the second housing is provided with terminals electrically connected to the first stator assembly, the first rotor assembly, the second stator assembly, the second rotor assembly and the third stator assembly, respectively, so as to control the first stator assembly, the first rotor assembly, the second stator assembly, the second rotor assembly and the third stator assembly, respectively, so that the three-stator double-rotor disc motor has multiple working modes; The three-stator dual-rotor disc motor also includes a water cooling pipeline system, and the water cooling pipeline system includes: A first water channel, provided on the first end cover and the first annular shell; a second water channel, communicating with the first water channel and provided on the second end cover and the second annular shell; and a water inlet and a water outlet, which are arranged on the first housing or the second housing and are connected to the first water channel or the second water channel; The first housing further comprises a first cover plate, a plurality of first grooves extending in the circumferential direction and interconnected are formed on the outer side surface of the first end cover, and the first cover plate is arranged to cover the outer side surface of the first end cover to enclose the plurality of first grooves to form a part of the first water channel; The second housing further comprises a second cover plate, a plurality of second grooves extending in the circumferential direction and interconnected are formed on the outer side surface of the second end cover, and the second cover plate is arranged to cover the outer side surface of the second end cover to enclose the plurality of second grooves to form a part of the second water channel; The butt end of the first annular shell is provided with a first interface communicating with the first water channel; The butt end of the second annular shell is provided with a second interface of the second water channel; The butt end of the first annular shell is butted against the butt end of the second annular shell, and the first interface is butted against the second interface; The second shaft butt end is provided with a mounting groove, the bottom of the mounting groove is provided with a threaded hole, the first shaft is penetrated by a through hole, the first shaft butt end is inserted into the mounting groove, and is fixed to the threaded hole at the bottom of the mounting groove by a screw connection passing through the through hole.

2. The three-stator double-rotor disc motor according to claim 1, characterized in that: One end of the first rotating shaft is mounted to the mounting hole of the first end cover through a bearing; One end of the second rotating shaft is correspondingly mounted in the mounting hole of the second end cover through a bearing.

3. The three-stator double-rotor disc motor according to claim 1, characterized in that: The inner side surface of the first end cover is provided with a first annular mounting groove, the first stator assembly comprises a first stator core and a first stator winding, the first stator core and the first stator winding are arranged in the first annular mounting groove and are potted by epoxy glue; and / or, The inner side surface of the second end cover is provided with a second annular mounting groove, the second stator assembly comprises a second stator core and a second stator winding, the second stator core and the second stator winding are arranged in the second annular mounting groove and are potted by epoxy glue; and / or, The third stator assembly includes two circular fixing plates with central openings, a plurality of third stator cores, a plurality of third stator windings and an inner matching annular plate. The two circular fixing plates are arranged opposite to each other and at intervals. The inner matching annular plate matches with the openings of the two circular fixing plates. The outer circumferential surfaces of the two circular fixing plates match with the inner side surfaces of the second housing. The two circular fixing plates, the inner matching annular plate and the second housing jointly enclose an annular installation cavity. The inner side surfaces of the two circular fixing plates are correspondingly provided with a plurality of positioning grooves arranged along the circumferential direction. The plurality of third stator cores are arranged in the annular installation cavity, and the two ends thereof match with the positioning grooves of the two circular fixing plates. The plurality of stator windings are correspondingly wound around the plurality of stator cores, and the annular installation cavity is filled with epoxy glue.

4. The three-stator double-rotor disc motor according to claim 1, characterized in that: The first rotor assembly and the second rotor assembly each include: A rotor support disk, wherein a circular mounting hole is provided in the middle of the rotor support disk for the first rotating shaft or the second rotating shaft to pass through, and the rotor support disk is provided with a plurality of trapezoidal through holes, wherein the plurality of trapezoidal through holes are arranged along the circumference of the rotor support disk; and A plurality of permanent magnets are arranged correspondingly to the plurality of trapezoidal through holes.

5. The three-stator double-rotor disc motor according to claim 4, characterized in that: A limiting boss is provided on the hole wall of the circular mounting hole of the rotor support plate, and the first rotating shaft and the second rotating shaft are correspondingly provided with an annular step portion which abuts against and limits the limiting boss of the corresponding rotor support plate.

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