CN114204764B

CN114204764B - Double mechanical port axial motor, distributed driving system and automobile

Info

Publication number: CN114204764B
Application number: CN202111315587.1A
Authority: CN
Inventors: 陈金华; 周朝; 蔺梦轩
Original assignee: Huawei Digital Power Technologies Co Ltd
Current assignee: Huawei Digital Power Technologies Co Ltd
Priority date: 2021-11-08
Filing date: 2021-11-08
Publication date: 2023-11-10
Anticipated expiration: 2041-11-08
Also published as: CN114204764A

Abstract

The application provides a double-mechanical-port axial motor, a distributed driving system and an automobile, wherein the double-mechanical-port axial motor comprises a stator, a first rotor and a second rotor, and the first rotor and the second rotor are respectively arranged on two sides of the stator. The stator comprises a stator core, a first stator winding and a second stator winding, wherein the first stator winding and the second stator winding are arranged on two side surfaces of the stator core, and each of the first stator winding and the second stator winding is provided with a power supply port capable of independently supplying power and is respectively used for independently driving the first rotor and the second rotor to rotate. The application has the advantages of flexible output mode, high integration level and small occupied space.

Description

Double mechanical port axial motor, distributed driving system and automobile

Technical Field

The application relates to the technical field of motors, in particular to a double-mechanical-port axial motor, a distributed driving system and an automobile.

Background

In order to improve the efficiency of the driving system of the automobile and increase the freedom degree of the driving system of the automobile, a distributed driving system is often adopted. Currently, there are three arrangements of distributed drive systems: centralized double motor configuration, wheel rim motor configuration and wheel hub motor configuration.

In the existing centralized double-motor distributed driving system, two motors which are arranged in a centralized way are generally used as two independent power sources of the driving system. But the double-motor structure in centralized arrangement needs to be additionally provided with a group of motor structures, so that the distributed driving system is complex in structure and large in occupied space.

When the motor adopts a radial motor, the traditional permanent magnet radial motor mostly presents a long cylinder shape, has smaller diameter and larger axial size, and causes larger occupation of the axial space of the distributed driving system. When the motor adopts an axial motor, the traditional axial motor mostly presents a disc-shaped structure, so that the diameter is large, the axial dimension is very thin, the radial space occupation of the distributed driving system is large, and the axial space occupation is small.

The axial motor generally adopts a design of double stators at two sides and a single rotor in the middle; the double rotors at two sides and the design of the single stator in the middle are also provided; there are also multi-rotor and multi-stator combined multi-disc designs in which the rotors are typically fixed to the same rotational axis and are symmetrically arranged to balance the axial force generated by the attraction of the stator to the rotor through the rotational axis. Therefore, the traditional axial flux motor can only perform single-axis output, and the problem of single output mode exists.

Disclosure of Invention

The application aims to solve the problems of single output mode, complex structure and large occupied space of a centralized double-motor distributed driving system of an axial flux motor in the prior art. Therefore, the application provides the double-mechanical-port axial motor, the distributed driving system and the automobile, wherein the double-mechanical-port axial motor is provided with two independent rotating shafts, and the two independent rotating shafts can be used for linkage output and can be respectively used as a power source for independent output, so that the double-mechanical-port axial motor has a flexible output mode. Meanwhile, the distributed driving system of the double mechanical port axial motor does not need to additionally increase a motor structure, and has the advantages of simple structure, small volume, small occupied space and high integration level.

The embodiment of the application provides a double mechanical port axial motor, which comprises a stator, a first rotor and a second rotor, wherein the first rotor and the second rotor are respectively arranged at two sides of the stator along the axial direction of the stator. The stator comprises a stator core, a first stator winding and a second stator winding, wherein the first stator winding and the second stator winding are respectively arranged on two axial side surfaces of the stator core, and the first stator winding and the second stator winding are respectively provided with a power supply port capable of independently supplying power. The first stator winding is used for driving the first rotor to rotate. The second stator winding is used for driving the second rotor to rotate.

In this scheme, first stator winding sets up towards first rotor, and second stator winding sets up towards the second rotor, and because first stator winding and second stator winding all have the power supply mouth that can independently supply power for first stator winding and second stator winding can independently supply power, and form mutually independent drive magnetic field under stator core cooperation, thereby make first stator winding and second stator winding can independently control the rotation of first rotor and second rotor respectively, and then make this double mechanical port axial motor form two independent output mechanical ports. Therefore, compared with the traditional axial motor, the scheme has the advantages that one mechanical port capable of independently outputting is additionally arranged, any one mechanical port can be adopted for outputting, two mechanical ports can be adopted for outputting in a linkage mode, the output power is improved, the two mechanical ports can be independently output, two independent power sources are formed, and the scheme has the advantage of flexible output mode. And compare in concentrated arrangement's bi-motor structure, although concentrated arrangement's bi-motor structure can realize multiple output mode equally, but this scheme is single stator and birotor structure's axial motor, compares in the bi-motor structure, has small, occupation space is little, simple structure, advantages such as the integrated level is high.

In some embodiments, the dual mechanical port axial motor further comprises a housing for housing the stator, the first rotor, and the second rotor. The stator core is fixedly arranged on the inner wall of the shell, and comprises a first side part and a second side part opposite to the first side part, and the two axial side surfaces of the stator core are respectively positioned on the first side part and the second side part.

The first rotor includes a first rotor disk and a first rotating shaft extending perpendicularly through a center of the first rotor disk, the first rotating shaft including a first end and a second end opposite the first end. The first end of the first rotating shaft is rotationally connected with the center of the first side part of the stator core, and the second end of the first rotating shaft penetrates through the first side surface of the shell and is rotationally connected with the shell.

The second rotor comprises a second rotor disk and a second rotating shaft which vertically penetrates through the center of the second rotor disk, and the second rotating shaft comprises a first end and a second end opposite to the first end. The first end of the second rotating shaft is rotationally connected with the center of the second side part of the stator core, and the second end of the second rotating shaft penetrates through the second side surface of the shell and is rotationally connected with the shell. The second side of the housing is opposite to the first side of the housing.

In some embodiments, the center of the first side portion of the stator core and the center of the second side portion of the stator core are penetrated along the axial direction of the stator core, a through hole is formed, a shaft sleeve is arranged in the through hole, two ends of the shaft sleeve are respectively connected with the first end of the first rotating shaft and the first end of the second rotating shaft in a rotating way through bearings, and the first rotating shaft and the second rotating shaft are arranged on the same axis. Because first rotor dish and second rotor dish can produce great axial force under the effect of stator magnetic field, consequently through setting up first pivot and second pivot on same axis, the both ends that are relative with first pivot and second pivot pass through the bearing rotation simultaneously and set up on same axle sleeve for the axial force that first rotor dish and second rotor dish received can be conducted to same axle sleeve through first pivot and second pivot on, play the mutual offset effect, reduced first rotor dish and second rotor dish and adsorbed to the stator or contact the risk of casing, make first rotor dish and second rotor dish can more stable operation.

In some embodiments, the stator core is annularly arranged, and the inner wall surface of the stator core is embedded with a stator inner sleeve, and the stator inner sleeve is sleeved and fixedly connected outside the shaft sleeve.

In some embodiments, the outer wall surface of the stator core is sleeved with and fixedly connected with a stator jacket, and the stator jacket is fixedly connected to the inner wall of the shell, so that the stator core is fixed to the inner wall of the shell through the stator jacket.

In some embodiments, the shell comprises a shell and two end covers respectively arranged at two ends of the shell, and each end cover is fixedly and detachably connected with the shell; the stator core is fixed and can dismantle the inner wall that sets up in the shell. Therefore, when the axial motor is overhauled or maintained subsequently, the two end covers can be disassembled, so that the rotor and the stator in the shell can be disassembled, replaced or maintained conveniently, and the convenience of overhauling or maintaining the axial motor is improved.

In some embodiments, the stator core includes a stator yoke, and first and second stator teeth disposed on both sides of the stator yoke, respectively, the first stator winding is wound on the first stator tooth, and the second stator winding is wound on the second stator tooth.

In the scheme, the first stator teeth and the second stator teeth are respectively arranged on two side surfaces of the same stator yoke to form the stator core. On the one hand, the first stator winding and the second stator winding can be simultaneously wound on the same stator core, so that the integral integration level of the stator is improved, and the integral volume of the stator is reduced. On the other hand, by the high magnetic conduction of the stator yoke, the interaction between the magnetic field generated by the first stator winding and the magnetic field generated by the second stator winding is blocked, and the interaction between the magnetic field generated by the first stator winding and the magnetic field generated by the second stator winding is reduced. The first stator winding and the second stator winding can keep stable operation when the first rotor and the second rotor are driven independently, and the reliability of the whole motor is improved.

In some possible embodiments, the stator yoke is divided into two parts arranged back to back, namely a first stator yoke provided with first stator teeth and a second stator yoke provided with second stator teeth, and the first stator yoke and the second stator yoke are detachably and fixedly matched. When the first stator winding and the second stator winding are assembled on the stator yoke, the stator yoke can be split into the stator yoke and the second stator yoke, so that the first stator winding is conveniently wound on the first stator teeth of the first stator yoke and the second stator winding is conveniently wound on the second stator teeth of the second stator yoke at the same time; and finally, the first stator yoke and the second stator yoke which are respectively wound with the first stator winding and the second stator winding are fixed in a back-to-back manner, so that the assembly efficiency of the stator is greatly improved.

Secondly, when the first stator winding or the second stator winding is damaged or needs to be replaced, only the first stator yoke or the second stator yoke is required to be disassembled and replaced, so that the maintenance or replacement efficiency is greatly improved. Meanwhile, the problem that only one of the first stator winding and the second stator winding is problematic is avoided, and the stator needs to be replaced or maintained completely, so that the replacement or maintenance cost is greatly increased.

In some possible embodiments, the periphery of the first stator yoke or the surface facing the second stator yoke is provided with a mounting part, the second stator yoke is provided with a fixing part detachably fixed with the mounting part, the mounting parts are provided with a plurality of mounting parts and are uniformly distributed on the periphery of the first stator part, and the mounting parts are arranged in a convex shape; the fixed part and the installation part are arranged in one-to-one correspondence, the fixed part is an annular buckle sleeved on the installation part and is rotationally connected with the periphery of the second stator part, so that the fixed part and the installation part can be fixed in a detachable mode.

The embodiment of the application provides a distributed driving system which comprises a first speed reducer, a second speed reducer and the double mechanical port axial motor provided by any one of the embodiments. The input end of the first speed reducer is in transmission connection with the first rotor, and the input end of the second speed reducer is in transmission connection with the second rotor. In the embodiment, the double mechanical port axial motors are adopted to replace the traditional centralized double motor structure, so that double-shaft independent output can be satisfied, a differential mechanism in a traditional driving system is omitted, the output efficiency and the output freedom degree of the driving system are improved, the number of motors is reduced, the structural complexity of the distributed driving system is greatly simplified, the whole volume of the distributed driving system is reduced, and the occupied space is reduced.

In some embodiments, the first shaft of the first rotor serves as the input shaft of the first reducer and the second shaft of the second rotor serves as the input shaft of the second reducer. By adopting the scheme, the number of the rotating shafts is reduced, so that the complexity of the distributed driving system is reduced, the volume of the distributed driving system is further reduced, and the integration level of the distributed driving system is improved.

The embodiment of the application provides an automobile, which comprises wheels and the double mechanical port axial motor provided by any embodiment, wherein the double mechanical port axial motor is used for driving the wheels to rotate. The first rotor and the second rotor of the double mechanical port axial motor are in transmission connection with the wheels through a transmission structure, so that the wheels are driven to rotate.

The embodiment of the application provides an automobile, which comprises wheels and the distributed driving system provided by any embodiment, wherein the distributed driving system is used for driving the wheels to rotate. The output ends of the first speed reducer and the second speed reducer in the distributed driving system are in transmission connection with the wheels through a transmission structure, so that the wheels are driven to rotate.

Drawings

FIG. 1a is a schematic cross-sectional view of a dual mechanical port axial motor according to an embodiment of the present application;

FIG. 1b is a schematic diagram of one control scheme of a stator of a dual mechanical port axial motor according to an embodiment of the present application;

FIG. 1c is a schematic diagram of another control scheme for a stator of a dual mechanical port axial motor according to an embodiment of the present application;

FIG. 2 is a schematic diagram of an exploded structure of a stator, a first rotor, and a second rotor in a dual mechanical port axial motor according to an embodiment of the present application;

FIG. 3 is a schematic side view of a stator of a dual mechanical port axial motor according to an embodiment of the present application;

fig. 4 is a schematic perspective view of a stator, a stator inner sleeve, a stator outer sleeve and a shaft sleeve of the dual mechanical port axial motor according to an embodiment of the present application;

FIG. 5a is a schematic perspective view of a stator of another embodiment of a dual mechanical port axial motor according to an embodiment of the present application;

FIG. 5b is an enlarged schematic view of the mounting and securing portions of a stator of another embodiment of a dual mechanical port axial motor according to an embodiment of the present application;

FIG. 6a is a schematic illustration of a stator side of a dual mechanical port axial motor according to an embodiment of the present application;

FIG. 6b is a schematic structural view of another side of a stator of a further embodiment of a dual mechanical port axial motor according to an embodiment of the present application;

FIG. 7 is a schematic diagram of a distributed drive system according to an embodiment of the present application;

FIG. 8a is a schematic diagram of a connection structure of a first rotor and a first reducer primary drive gear of the distributed drive system of the present application;

fig. 8b is a schematic diagram of a connection structure between the second rotor and the primary drive gear of the second reducer of the distributed drive system of the present application.

Reference numerals illustrate:

100. a dual mechanical port axial motor;

1. a stator;

11. a stator core; 12. a first stator winding; 13. a second stator winding; 14. a stator inner sleeve; 15. a stator jacket;

111. a first stator tooth; 112. a second stator tooth; 113. a stator yoke; 114. a mounting part; 115. a fixing part; 101. a shaft sleeve; 102. a bearing; 103. a bearing; 104. a bearing; 105. a bearing; 106. a bearing; 107. a bearing;

1131. a first stator yoke; 1132. a second stator yoke;

121. a first magnetic induction region; 122. a second magnetic induction region;

2. a first rotor;

21. a first rotor disk; 22. a first rotating shaft;

3. a second rotor;

31. a second rotor disk; 32. a second rotating shaft;

4. a housing;

41. a housing; 42. an end cap;

51. a first decelerator; 511. an output shaft; 512. a primary drive gear; 513. a primary passive gear; 514. a secondary drive gear; 515. a secondary passive gear;

52. A second decelerator; 521. an output shaft; 522. a primary drive gear; 523. a primary passive gear; 524. a secondary drive gear; 525. a secondary passive gear;

6. a controller; 61. a first control unit; 61. and a second control unit.

Detailed Description

Further advantages and effects of the present application will become apparent to those skilled in the art from the disclosure of the present specification, by describing the embodiments of the present application with specific examples. While the description of the application will be presented in connection with certain embodiments, it is not intended to limit the features of this application to only this embodiment. Rather, the purpose of the present application is to cover other alternatives or modifications, which may be extended by the claims based on the application. The following description contains many specific details for the purpose of providing a thorough understanding of the present application. The application may be practiced without these specific details. Furthermore, some specific details are omitted from the description in order to avoid obscuring the application. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.

It should be noted that in this specification, like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

In the description of the present application, it should be understood that "electrically connected" in the present application may be understood that components are in physical contact and electrically conductive; it is also understood that the various components in the wiring structure are connected by physical wires such as printed circuit board (printed circuit board, PCB) copper foil or leads that carry electrical signals. For the purpose of making the objects, technical solutions and advantages of the present application more apparent, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

Referring to fig. 1a and fig. 2, fig. 1a is a schematic cross-sectional structure diagram of a dual mechanical port axial motor according to an embodiment of the present application, and fig. 2 is an exploded structure diagram of a stator, a first rotor and a second rotor in the dual mechanical port axial motor according to an embodiment of the present application.

As shown in fig. 1a and 2, an embodiment of the present application provides a dual mechanical port axial motor 100 comprising a single stator 1, a first rotor 2 disposed on one side of the stator 1 and a second rotor 3 disposed on the other side of the stator 1. Wherein, the stator 1 comprises a stator core 11 and a stator winding, and the stator core 11 and the stator winding cooperate to generate a driving magnetic field by inputting current to the stator winding, so as to drive the first rotor 2 and the second rotor 3 to rotate relative to the stator 1. The first rotor 2 and the second rotor 3 have separate rotation shafts, respectively, so that the first rotor 2 and the second rotor 3 can rotate independently, i.e. the first rotor 2 and the second rotor 3 can have different rotation directions and rotation rates when rotating.

In the present embodiment, the stator core 11 is wound with the first stator winding 12 and the second stator winding 13 with respect to both side surfaces of the first rotor 2 and the second rotor 3, respectively, while the first stator winding 12 and the second stator winding 13 each have a power supply port that can supply power independently, so that the first stator winding 12 and the second stator winding 13 can supply power independently. Since the first stator winding 12 is disposed towards the first rotor 2, in the use process, different currents are input into the power supply port of the first stator winding 12, so that the first stator winding 12 and the stator core 11 cooperate to generate different driving magnetic fields, and cooperate with the first rotor 2 to form a closed magnetic loop, thereby independently driving the first rotor 2 to rotate in different manners. For example, the torque when the first rotor 2 rotates is controlled by controlling the magnitude of the current supplied to the power supply port of the first stator winding 12 and adjusting the magnetic field strength of the driving magnetic field, or the rotational speed when the first rotor 2 rotates is increased by increasing the frequency of the change of the current supplied to the power supply port of the first stator winding 12 and increasing the rate of change of the driving magnetic field. Similarly, the second stator winding 13 is disposed toward the second rotor 3, and the rotation mode of the second rotor 3 is controlled by controlling the current input to the power supply port of the second stator winding 13.

It can be understood by those skilled in the art that, since the winding positions of the first stator winding 12 and the second stator winding 13 are relatively independent and can be separately powered, winding forms of the first stator winding 12 and the second stator winding 13 can be mutually independent, and the first stator winding 12 and the second stator winding 13 can adopt a three-phase distributed winding mode, and simultaneously, the first stator winding 12 and the second stator winding 13 are electrically connected with two independent power supply ports through leads respectively, so that the first stator winding 12 and the second stator winding 13 can form a relatively uniform rotating magnetic field, leakage of magnetic force is reduced, output efficiency is improved, and the first rotor 2 and the second rotor 3 are driven to rotate more efficiently. In other embodiments, the first stator winding 12 and the second stator winding 13 may also adopt a single-phase winding or other multi-phase winding modes, and in particular, the present application is not limited thereto. In the present embodiment, the first stator winding 12 and the second stator winding 13 take the same winding form. In other embodiments, the first stator winding 12 and the second stator winding 13 may also take different winding forms. The winding forms comprise not only the general winding forms such as a distributed winding and a centralized winding, but also specific winding forms such as winding turns, winding directions, thicknesses of winding coils, materials of winding coils and the like, and also winding forms such as a direct current winding and an alternating current winding which are supplied with power differently. Specifically, the special design can be performed according to the use situation of the motor, and the embodiment is not limited.

Referring to fig. 1b and 1c, fig. 1b is a schematic diagram illustrating a control manner of a stator of a dual mechanical port axial motor according to an embodiment of the application. Fig. 1c is a schematic diagram of another control mode of a stator of a dual mechanical port axial motor according to an embodiment of the present application. As shown in fig. 1b, the power supply ports of the first stator winding 12 and the second stator winding 13 are respectively connected with a first control unit 61 and a second control unit 62, and the first control unit 61 and the second control unit 62 can respectively control the current input into the first stator winding 12 and the second stator winding 13. Thereby realizing separate control of the first rotor 2 and the second rotor 3. In other embodiments, as shown in fig. 1c, the power supply ports of the first stator winding 12 and the second stator winding 13 are connected with the same controller 6, and the controller 6 can control the currents input into the first stator winding 12 and the second stator winding 13 respectively, so that not only can the independent control of the first rotor 2 and the second rotor 3 be realized, but also the joint rotation of the first rotor 2 and the second rotor 3 can be controlled, wherein the joint rotation comprises the control of the synchronous rotation of the first rotor 2 and the second rotor 3, the control of the rotation of the first rotor 2 and the second rotor 3 according to a set speed ratio, the control of the rotation of the first rotor 2 and the second rotor 3 according to a set speed difference, and the like, so that the dual mechanical port axial motor 100 has a more flexible output mode.

Referring to fig. 1a again, the stator 1, the first rotor 2 and the second rotor 3 are wrapped with a casing 4, and the casing 4 is used for accommodating and supporting the stator 1, the first rotor 2 and the second rotor 3, and has a certain protection effect, so that the first rotor 2 and the second rotor 3 are prevented from being contacted or collided with the stator 1 under the action of external force when rotating. The stator core 11 in the stator 1 is fixedly disposed on the inner wall of the housing 4. The power supply ports of the first stator winding 12 and the second stator winding 13 are fixedly arranged on the side wall of the housing 4 and are electrically connected with electronic devices outside the housing 4, wherein the electronic devices comprise a power supply, a control unit or a controller and the like. In other embodiments, the power supply ports of the first stator winding 12 and the second stator winding 13 are used for electrically connecting the electronic devices outside the housing 4, so that the power supply ports of the first stator winding 12 and the second stator winding 13 can be arranged inside the housing 4, and the electronic devices outside the housing 4 extend into the housing 4 to be connected with the power supply ports; or may extend out of the side wall of the housing 4 and be connected to electronics external to the housing 4, and in particular, the application is not limited.

The stator core 11 includes a first side portion and a second side portion opposite to the first side portion, and both side surfaces of the stator core 11 in the axial direction thereof are located on the first side portion and the second side portion, respectively. Wherein the stator core 11 is disposed toward the first rotor disk 21 and the second rotor disk 31 along both side surfaces in the axial direction thereof, respectively.

The first rotor 2 includes a first rotor disk 21 and a first shaft 22 vertically penetrating the center of the first rotor disk 21, the first shaft 22 including a first end and a second end opposite to the first end. The first end of the first rotating shaft 22 is rotationally connected with the center of the first side part of the stator core 11, and the second end of the first rotating shaft 22 penetrates through the first side surface of the shell 4 and is rotationally connected with the shell 4 through a bearing 104; while leaving an air gap between the first rotor disk 21 and both the stator 1 and the housing 4 to ensure that the first rotor disk 21 can rotate normally.

The second rotor 3 includes a second rotor disk 31 and a second rotating shaft 32 vertically penetrating the center of the second rotor disk 31, and the second rotating shaft 32 includes a first end and a second end opposite to the first end. The first end of the second rotating shaft 32 is rotatably connected with the center of the second side portion of the stator core 11, and the second end of the second rotating shaft 32 penetrates through the second side surface of the housing 4 and is rotatably connected with the housing 4 through the bearing 105, and meanwhile, air gaps are reserved between the second rotor disc 31 and the stator 1 and between the second rotor disc 31 and the housing 4, so that the second rotor disc 31 can rotate normally. The second side of the housing 4 is opposite to the first side of the housing 4.

Referring to fig. 1a and 2 again, in the present embodiment, the stator core 11 is disposed in a ring shape, and the center of the first side portion of the stator core 11 and the center of the second side portion of the stator core 11 are penetrated along the axis of the stator core 11, and a through hole is formed, wherein the center of the first side portion of the stator core 11 coincides with the center of the driving magnetic field generated by the first stator winding 12, and the center of the second side portion of the stator core 11 coincides with the center of the driving magnetic field generated by the second stator winding 13. The shaft sleeve 101 is fixedly arranged in the through hole, two ends of the shaft sleeve 101 are respectively connected with the first end of the first rotating shaft 22 in a rotating way through the bearing 103 and the first end of the second rotating shaft 32 in a rotating way through the bearing 102, so that the first end of the first rotating shaft 22 is connected with the center of the first side part of the stator core 11 in a rotating way, the first end of the second rotating shaft 32 is connected with the center of the second side part of the stator core 11 in a rotating way, and the first rotating shaft 22 and the second rotating shaft 32 are arranged on the same axis. Since the first rotor disk 21 and the second rotor disk 31 are subjected to the attractive force of the magnetic field from the stator 1 during rotation, the first rotor disk 21 and the second rotor disk 31 generate a large axial force during rotation, and meanwhile, the first rotor disk 21 is fixedly connected with the first rotating shaft 22, and the second rotor disk 31 is fixedly connected with the second rotating shaft 32, the axial force received by the first rotor disk 21 and the second rotor disk 31 is directly transmitted to the first rotating shaft 22 and the second rotating shaft 32.

In order to balance the axial force received by the first rotor disk 21 and the second rotor disk 31, opposite ends of the first rotating shaft 22 and the second rotating shaft 32 are rotatably provided on the same shaft sleeve 101 through the bearing 103 and the bearing 102, and the first rotating shaft 22 and the second rotating shaft 32 are positioned on the same axis, so that the axial force received by the first rotating shaft 22 and the second rotating shaft 32 is transmitted to the same shaft sleeve 101 through the bearing 103 and the bearing 102. Accordingly, the first and second rotating shafts 22 and 32 are subjected to opposite axial forces, which can be balanced with each other on the same shaft sleeve 101, reducing the risk of the first and second rotor discs 21 and 31 being adsorbed to the stator 1 or contacting the housing 4, so that the first and second rotor discs 21 and 31 can be operated more stably.

Furthermore, it will be appreciated by those skilled in the art that the first rotor disk 21 and the second rotor disk 31 need only have a magnetic field that cooperates with the stator 1 to rotate under the magnetic field generated by the stator 1. Accordingly, the first rotor disk 21 and the second rotor disk 31 may employ rotor disks in the related art, such as permanent magnet rotor disks, asynchronous rotor disks, and the like. Meanwhile, since the first rotor disk 21 and the second rotor disk 31 need to be rotated, and the first rotation shaft 22 is vertically disposed through the center of the first rotor disk 21, the second rotation shaft 32 is vertically disposed through the center of the second rotor disk 31. Therefore, in the case of high-speed rotation, in order to reduce the eccentric force generated by the first rotor disk 21 and the second rotor disk 31, the cross sections of the first rotor disk 21 and the second rotor disk 31 perpendicular to the rotation axis direction are preferably in a center symmetrical pattern. In other embodiments, the cross sections of the first rotor disk 21 and the second rotor disk 31 perpendicular to the rotation axis direction may take other shapes, and the present application is not limited thereto. In the present embodiment, the first rotor disk 21 and the second rotor disk 31 are each a disk-shaped cylinder to improve stability when the first rotor disk 21 and the second rotor disk 31 are rotated.

Referring again to fig. 1a and 2, the first rotor 2 and the second rotor 3 shown in fig. 1a and 2 are arranged in the same structure and symmetrically on both sides of the stator 1. As will be appreciated by those skilled in the art, since the first rotor 2 and the second rotor 3 are disposed on both sides of the stator 1, respectively, and the first rotor 2 and the second rotor 3 each have an independent rotation shaft, rotation can be independently performed, and at the same time, the first rotor 2 and the second rotor 3 are independently controlled by the first stator winding 12 and the second stator winding 13, respectively, so that the first rotor 2 and the second rotor 3 are relatively independent. Thus, in other embodiments, the first rotor 2 and the second rotor 3 may be provided in different configurations, for example, the diameters, thicknesses, types, etc. of the first rotor disk 21 and the second rotor disk 31 may be different, and the diameters, materials, etc. of the first rotation shaft 22 and the second rotation shaft 32 may be different. Specifically, the present application is not limited.

Referring again to fig. 1a, the housing 4 includes a housing 41 and two end caps 42 disposed at two ends of the housing 41, wherein surfaces of the two end caps 42 facing away from the housing 41 respectively form a first side and a second side of the housing 4. Each end cap 42 is removably secured to the housing 41, wherein the removable secured connection includes a threaded connection, a snap fit connection, a hinged connection, and the like. The shell 41 is the barrel setting to circumference parcel stator 1, first rotor 2 and second rotor 3, can dismantle fixed connection between shell 41 and the stator 1 simultaneously, all leave the clearance between shell 41 and first rotor 2 and the second rotor 3, avoid first rotor 2 and second rotor 3 to take place to contact or collide with shell 41 in the rotation in-process. The rotation shafts of the first rotor 2 and the second rotor 3 penetrate the end caps 42 at both ends of the housing 41, respectively, and are rotatably connected to both end caps 42 through bearings 104 and 105. While the two end caps 42 are respectively disposed proximate to the first rotor disk 21 and the second rotor disk 31 with a gap left between the end cap 42 proximate to the first rotor disk 21 and the first rotor disk 21; a gap is left between end cap 42 proximate second rotor disk 31 and second rotor disk 31. Making the housing 4 more closely conform to the stator 1, the first rotor 2 and the second rotor 3 is advantageous in reducing the volume of the housing 4, thereby reducing the overall volume of the dual mechanical port axial motor 100. In addition, because the shell 41 is the barrel setting, and the end cover 42 at shell 41 both ends all can dismantle fixed connection with shell 41 for when follow-up axial motor overhauls or maintains, can dismantle two end covers 42, thereby be convenient for dismantle, replace or maintain first rotor 2, second rotor 3 and stator 1 in the shell 41, improved the convenience that overhauls or maintains axial motor.

As will be appreciated by those skilled in the art, the housing 4 serves to secure the stator 1 while rotatably supporting the first and second shafts 22 and 32 and to provide some protection. Accordingly, in other embodiments, the housing 4 may not be provided to minimize the volume of the dual mechanical port axial motor 100 while facilitating heat dissipation from the dual mechanical port axial motor 100. At this time, the stator 1 may be directly fixed in the driving system or fixed through a supporting frame; the first shaft 22 and the second shaft 32 may be rotatably supported by a support member or may be directly used as input shafts to be connected to a driving system.

Referring to fig. 3 and 4, fig. 3 is a schematic side view of a stator of a dual mechanical port axial motor according to an embodiment of the present application, and fig. 4 is a schematic perspective view of a stator of a dual mechanical port axial motor according to an embodiment of the present application, in which the stator is matched with a stator inner sleeve, a stator outer sleeve and a shaft sleeve. As shown in fig. 3, the stator core 11 includes a stator yoke 113 that is annularly disposed, and a first stator tooth 111 and a second stator tooth 112 that are respectively disposed on two sides of the stator yoke 113, where the first stator tooth 111 includes a plurality of tooth-shaped protrusions and is uniformly distributed on one side of the stator yoke 113 in a central symmetry manner; the second stator teeth 112 include a plurality of tooth-shaped protrusions, and are uniformly distributed on the other side surface of the stator yoke 113 in a central symmetry manner. The first stator winding 12 is wound around the first stator teeth 111, and the second stator winding 13 is wound around the second stator teeth 112. It will be appreciated that the stator yoke 113, the first stator tooth 111 and the second stator tooth 112 need only be capable of providing the first stator winding 12 and the second stator winding 13, and cooperate with the first stator winding 12 and the second stator winding 13 to form two independent driving magnetic fields, and thus, in other embodiments, the stator yoke 113, the first stator tooth 111 and the second stator tooth 112 may take other configurations, and in particular, the application is not limited thereto.

The stator yoke 113, the first stator teeth 111 and the second stator teeth 112 are all made of high magnetic conductive materials, and the high magnetic conductive materials comprise common carbon structural steel, silicon steel sheets, electrical pure iron, magnetic conductive alloy and the like. As will be appreciated by those skilled in the art, the stator yoke 113, the first stator teeth 111 and the second stator teeth 112 may be made of the same high magnetic conductive material, and the stator core 11 is manufactured by an integral molding process, so that the production process of the stator core 11 is simplified, and the production cost is reduced; meanwhile, the stator yoke 113, the first stator teeth 111 and the second stator teeth 112 may also respectively adopt different high magnetic conductive materials according to different situations, and the first stator teeth 111 and the second stator teeth 112 are fixedly arranged on two side surfaces of the stator yoke 113, wherein the different situations include different rotor types, different required output powers, different rotor sizes and the like of the first rotor 2 (see fig. 1 a) and the second rotor 3 (see fig. 1 a) corresponding to the first stator teeth 111 and the second stator teeth 112. Specifically, the present solution is not limited.

The high magnetic conductive material is used for the first stator teeth 111 and the second stator teeth 112 with high magnetic conductivity, which is beneficial to enhancing the magnetic field intensity formed after the first stator winding 12 and the second stator winding 13 are electrified, and improving the output efficiency of current. Meanwhile, through the high magnetic conduction effect of the stator yoke 113, the interaction between the magnetic field generated by the first stator winding 12 and the magnetic field generated by the second stator winding 13 is blocked, the interaction between the magnetic field generated by the first stator winding 12 and the magnetic field generated by the second stator winding 13 is reduced, and the energy loss is reduced. And the first stator winding 12 and the second stator winding 13 can keep stable operation when the first rotor 2 and the second rotor 3 are respectively and independently driven, so that the reliability of the whole motor is improved. In addition, the first stator teeth 111 and the second stator teeth 112 share the same stator yoke 113, which improves the integration of the stator 1 as a whole. The volume of the stator 1 is reduced, thereby reducing the overall volume of the motor.

Referring to fig. 3 and 4 again, in the present embodiment, the structures and arrangement of the first stator winding 12 and the second stator winding 13 on both sides of the stator core 11 may be the same, and thus, the structures and arrangement of the first stator winding 12 are described in detail in the present embodiment as an example. As shown in fig. 4, the stator core 11 is annularly arranged, and the first stator winding 12 is wound around the first stator tooth 111 along the circumferential direction of the first stator tooth 111, so that the diameter of the inner circumference formed by the first stator winding 12 is smaller than that of the inner circumference of the stator core 11, and the diameter of the outer circumference formed by the first stator winding 12 is larger than that of the outer circumference of the stator core 11, that is, the first stator winding 12 extends beyond the inner circumference and the outer circumference of the annular band of the stator core 11. The second stator winding 13 may be configured and arranged in the same manner as the first stator winding 12 and is arranged in the second stator teeth 112. So that the inner wall surface of the stator core 11 is difficult to be directly fixedly connected with the outer wall of the bushing 101, and the outer wall surface of the stator core 11 is difficult to be directly fixedly connected with the inner wall of the housing 4 (see fig. 1 a). Therefore, the inner wall surface of the stator core 11 is fixedly fitted with the stator inner sleeve 14, and the inner wall surface of the stator core 11 is fixedly connected with the outer wall of the sleeve 101 through the stator inner sleeve 14. The outer wall surface of the stator core 11 is sleeved with and fixedly connected with a stator jacket 15, and the outer wall surface of the stator core 11 is fixedly connected with the inner wall of the housing 4 (see fig. 1 a) through the stator jacket 15. It will be appreciated by those skilled in the art that the structures and arrangement of the first stator winding 12 and the second stator winding 13 on both sides of the stator core 11 are relatively independent, and thus, in other embodiments, the first stator winding 12 and the second stator winding 13 may take different winding forms, and the first stator winding 12 and/or the second stator winding 13 take winding forms, such that the first stator winding 12 and/or the second stator winding 13 extends beyond the inner circumference and/or the outer circumference of the annular band of the stator core 11.

Further, the stator inner sleeve 14 and the stator outer sleeve 15 are both arranged in an annular structure, so as to better fit the outer wall of the shaft sleeve 101 and the inner wall of the outer shell 41 (see fig. 1 a), and enhance the stability of fixation. In connection with the above embodiments, it will be appreciated by those skilled in the art that the stator inner sleeve 14 and the stator outer sleeve 15 function in: when the first stator winding 12 adopts a winding form such that the first stator winding 12 exceeds the inner circumference and/or the outer circumference of the endless belt of the stator core 11, thereby affecting the fixed engagement between the stator core 11 and the housing 4 (see fig. 1 a) and/or the sleeve 101, the stator inner sleeve 14 and the stator outer sleeve 15 may serve as fixed connection members, thereby fixing the stator core 11 to the inner wall of the housing 41, and fixing the sleeve 101 to the center of the stator core 11, wherein the stator inner sleeve 14 is used for fixedly connecting the stator core 11 and the sleeve 101, and the stator outer sleeve 15 is used for fixedly connecting the housing 4 (see fig. 1 a) and the stator core 11. Thus, in other embodiments, the stator inner and outer casings 14, 15 may take other forms, such as a number of rod-like structures.

Further, referring to fig. 3 and 4 again, in combination with the above embodiment, the first stator winding 12 and the second stator winding 13 may each take various winding forms, and in other embodiments, the first stator winding 12 and the second stator winding 13 each take winding forms such that the first stator winding 12 and the second stator winding 13 do not exceed the inner circumference and the outer circumference Zhou Yuanshi of the annular band of the stator core 11, and the stator core 11 may be directly fixed to the inner wall of the casing 41, and the sleeve 101 may be directly fixed to the center of the stator core 11, so that the stator inner sleeve 14 and the stator outer sleeve 15 may not be provided, the structure of the stator 1 is simplified, and the volume of the stator 1 is reduced.

Referring to fig. 5a and 5b, fig. 5a is a schematic perspective view illustrating a stator of another embodiment of a dual mechanical port axial motor according to an embodiment of the present application, and fig. 5b is an enlarged schematic view illustrating a mounting portion and a fixing portion of the stator of another embodiment of the dual mechanical port axial motor according to an embodiment of the present application. As shown in fig. 5a, the stator yoke 113 (see fig. 3) is divided into two parts disposed back to back, namely, a first stator yoke 1131 provided with the first stator teeth 111 and a second stator yoke 1132 provided with the second stator teeth 112, and the first stator yoke 1131 and the second stator yoke 1132 are detachably and fixedly engaged. When the first stator winding 12 and the second stator winding 13 are assembled on the stator yoke 113, the stator yoke 113 (see fig. 3) may be split into the first stator yoke 1131 and the second stator yoke 1132, thereby facilitating simultaneous winding of the first stator winding 12 on the first stator teeth 111 of the first stator yoke 1131 and winding of the second stator winding 13 on the second stator teeth 112 of the second stator yoke 1132; finally, the first stator yoke 1131 and the second stator yoke 1132 around which the first stator winding 12 and the second stator winding 13 are wound are fixed in a back-to-back manner, so that the assembly efficiency of the stator 1 is greatly improved.

Secondly, when the first stator winding 12 or the second stator winding 13 is damaged or needs to be replaced, only the first stator yoke 1131 or the second stator yoke 1132 needs to be disassembled and replaced, so that the maintenance or replacement efficiency is greatly improved. Meanwhile, when only one of the first and second stator windings 12 and 13 fails, the integrally formed stator yoke 113 (see fig. 3) needs to be replaced for the whole stator 1, and the first and second stator yokes 1131 and 1132, which are separately provided, need to be replaced for only the part of the first and second stator yokes 1131 and 1132 on the side where the failure occurs, thereby greatly reducing the replacement cost.

As shown in fig. 5a and 5b, the periphery of the first stator yoke 1131 is fixedly provided with a mounting portion 114, the second stator yoke 1132 is provided with a fixing portion 115 detachably fixed with the mounting portion 114, wherein the mounting portion 114 is provided with a plurality of mounting portions, and is uniformly distributed on the periphery of the first stator yoke 1131, and the mounting portion 114 is arranged in a convex shape; the fixing portions 115 are arranged in one-to-one correspondence with the mounting portions 114, and the fixing portions 115 are annular buckles sleeved on the mounting portions 114 and are rotatably connected with the periphery of the second stator yoke 1132, so that the fixing portions 115 and the mounting portions 114 can be detachably fixed.

In connection with the above embodiment, it will be understood by those skilled in the art that the mounting portion 114 and the fixing portion 115 are used to detachably fix the first stator yoke 1131 and the second stator yoke 1132 back to each other, and thus, the structures of the mounting portion 114 and the fixing portion 115 are not limited to the protrusions and the snaps, but include the detachably fixed structures such as the threads and the bolts. In addition, in other embodiments, since the mounting portion 114 and the fixing portion 115 are provided for the purpose of detachably fixing the first stator yoke 1131 and the second stator yoke 1132, when the first stator yoke 1131 and the second stator yoke 1132 are disposed inside the housing 4 in a detachable fixing engagement with the inner wall of the housing 4, the detachable fixing of the first stator yoke 1131 and the second stator yoke 1132 can also be achieved. So that the mounting portion 114 and the fixing portion 115 may not be provided to simplify the structure of the stator yoke 113.

Referring to fig. 6a and 6b, fig. 6a is a schematic structural view of one side of a stator of a dual mechanical port axial motor according to an embodiment of the present application, and fig. 6b is a schematic structural view of the other side of the stator of the dual mechanical port axial motor according to an embodiment of the present application. As shown in fig. 6a and 6b, the first stator teeth 111 are wound with a plurality of groups of mutually independent first stator windings 12, and different first stator windings 12 are annularly arranged to form annular magnetic induction areas with different radiuses. The first stator windings 12 with different radii are nested. The second stator teeth 112 are wound with a plurality of groups of mutually independent second stator windings 13, and different second stator windings 13 are annularly arranged to form annular magnetic induction areas with different radiuses; the second stator windings 13 with different radii are nested. The different first stator windings 12 and second stator windings 13 each have a supply port for independent power supply.

Further, please combine the positional relationship of the stator 1, the first rotor 2 and the second rotor 3 in fig. 2, and refer to fig. 6a and 6b, several groups of mutually independent first stator windings 12 are projected in the direction perpendicular to the surface of the stator core 11 during the process of matching with the first rotor 2, so as to form a projection area, and only the first stator windings 12 in the projection area are powered, so as to form an annular magnetic induction area matched with the first rotor 2. Thus, when the radii of the first rotor 2 are different, several sets of mutually independent first stator windings 12 on the first stator teeth 111 may form an endless belt-like magnetically induced area adapted to the radius of the first rotor 2, so that rotors of various radius dimensions may be adapted. Similarly, it can be known that a plurality of groups of mutually independent second stator windings 13 of the second stator teeth 112 can be controlled to form magnetic induction areas with different radii, so as to adapt to the second rotors 3 with various radius dimensions, thereby improving the adaptability and the flexibility of the stator 1.

Further, in the present embodiment, the structure and the principle of action of the two sides of the stator 1 may be the same, for convenience of description, taking several groups of mutually independent first stator windings 12 as an example, as shown in fig. 6a, in the present embodiment, two groups of independent first stator windings 12 are provided on one side of the stator core 11, the two groups of independently provided first stator windings 12 respectively form a first magnetic induction area 121 and a second magnetic induction area 122 with different radii, and the first magnetic induction area 121 and the second magnetic induction area 122 are nested, and when the projection area of the first rotor 2 only includes the first magnetic induction area 121, only the first stator windings 12 in the first magnetic induction area 121 are powered to form a driving magnetic field, so as to drive the first rotor 2 to rotate. When the projection area of the first rotor 2 includes the first magnetic induction area 121 and the second magnetic induction area 122, the first stator winding 12 in the first magnetic induction area 121 and the second magnetic induction area 122 can be simultaneously powered to form a driving magnetic field, so that the first rotor 2 is driven to rotate with the maximum power, the maximization of the output power is realized, and the first stator winding 12 in the first magnetic induction area 121 or the first stator winding 12 in the second magnetic induction area 122 can be only powered to form the driving magnetic field, so that the first rotor 2 is driven to rotate, and the energy consumption is saved. As shown in fig. 6b, two groups of mutually independent second stator windings 13 arranged on the second stator teeth 112 are arranged in the same manner as the first stator windings 12, so that magnetic induction areas with different radiuses can be formed, and multiple driving magnetic fields are realized by independently controlling the power supply of the different second stator windings 13, so that the second rotor 3 is driven to rotate in multiple modes. The two side surfaces of the stator 1 not only can be matched with rotors with various radius sizes, but also have good adaptability, various driving modes are provided, and the flexibility of the stator 1 is improved. Referring to fig. 7, 8a and 8b, fig. 7 is a schematic structural diagram of a distributed driving system according to the present application, fig. 8a is a schematic structural diagram of a connection between a first rotor and a first primary driving gear of a first speed reducer of the distributed driving system according to the present application, and fig. 8b is a schematic structural diagram of a connection between a second rotor and a second primary driving gear of a second speed reducer of the distributed driving system according to the present application.

As shown in fig. 7, the present embodiment provides a distributed drive system including a first decelerator 51, a second decelerator 52, and a dual mechanical port axial motor 100 as provided in any of the above embodiments. The input end of the first speed reducer 51 is in driving connection with the first rotor 2 to transmit the power of the first rotor 2 to the first speed reducer 51. The input end of the second speed reducer 52 is in driving connection with the second rotor 3 to transmit the power of the second rotor 3 to the second speed reducer 52.

The first and second reducers 51 and 52 each have an input shaft, a gear set, and an output. The input shaft of the first speed reducer 51 is an input end of the first speed reducer 51, and the input shaft of the second speed reducer 52 is an input end of the second speed reducer 52. The transmission connection mode includes, but is not limited to, that the first rotating shaft 22 and the second rotating shaft 32 are respectively and directly used as input shafts of the first speed reducer 51 and the second speed reducer 52 to be transmitted, and the first rotating shaft 22 and the second rotating shaft 32 are respectively and directly connected with the input shafts of the first speed reducer 51 and the second speed reducer 52 through spline connection, or the first rotating shaft 22 and the second rotating shaft 32 are respectively connected with the input shafts of the first speed reducer 51 and the second speed reducer 52 through belt transmission, chain transmission, friction wheel transmission, gear transmission and other modes. Specifically, the present application is not limited.

When the distributed driving system is applied to the driving system of the vehicle, the output shaft 511 of the first speed reducer 51 and the output shaft 521 of the second speed reducer 52 are respectively connected with a first wheel and a second wheel in a transmission manner, wherein the first wheel and the second wheel can be two front wheels of the vehicle or two rear wheels of the vehicle. In the running process of the distributed driving system, the stator 1 drives the first rotor 2 to rotate at a high speed, the first rotor 2 rotating at a high speed transmits power to a gear set in the first speed reducer 51 through the first shaft 22, the gear set decelerates and increases torque of the first shaft 22 rotating at a high speed, and the output shaft 511 of the first speed reducer 51 provides rotating power with proper rotating speed and torque for the first wheel. The first rotor 2 driven by the stator 1 can independently drive the first wheel to rotate, and the rotation states of rotation speed, torsion and the like of the first wheel are independently controlled.

Specifically, as shown in fig. 7, the gear set in the first reduction gear 51 includes a primary drive gear 512, a primary driven gear 513, a secondary drive gear 514, and a secondary driven gear 515. The primary driving gear 512 is fixedly connected with an input shaft, the secondary driven gear 515 is fixedly connected with an output shaft 511, the primary driving gear 512 and the primary driven gear 513 are used for primarily decelerating and increasing torque of high-rotation-speed and low-torque power input by the input shaft and transmitting the power to the secondary driving gear 514, and the secondary driving gear 514 and the secondary driven gear 515 are used for further decelerating and increasing torque of the input power and outputting power with proper rotation speed and torque through the output shaft 511.

In addition, the stator 1 drives the second rotor 3 to rotate at a high speed, and the second rotor 3 rotating at a high speed transmits power to the gear set in the second decelerator 52 through the second rotating shaft 32. The second reducer 52 has the same structure as the first reducer 51, and includes an output shaft 521, a primary driving gear 522, a primary driven gear 523, a secondary driving gear 524, and a secondary driven gear 525. The second speed reducer 52 and the first speed reducer 51 have the same principle of action, and are used for reducing speed and increasing torque of the second rotating shaft 32 rotating at high speed, and providing rotating power with proper rotating speed and torque for the second wheel through the output shaft 521 of the second speed reducer 52. The second rotor 3 driven by the stator 1 can independently drive the second wheel to rotate, and the rotation states of rotation speed, torsion and the like of the second wheel are independently controlled.

As will be appreciated by those skilled in the art, the first and second decelerator 51 and 52 function in: the first rotor 2 and the second rotor 3 rotating at high speed are respectively and independently decelerated and increased in torque, so that rotational power with proper rotational speed and torque is output. Therefore, in other embodiments, the first and second reducers 51 and 52 may be configured as reducers, such as worm gear reducers, planetary reducers, and harmonic reducers. Meanwhile, since the first decelerator 51 and the second decelerator 52 are respectively provided and independent from each other, the first decelerator 51 and the second decelerator 52 may have the same structure or may have different structures.

Further, the rotation speeds of the first wheel and the second wheel can be controlled and regulated by the distributed driving system, so that a differential mechanism between the first wheel and the second wheel in the traditional driving system can be omitted, the structure of the distributed driving system is simplified, and the integration level of the distributed driving system is improved. For example, when the vehicle is traveling in a turn, a certain rotational speed difference between the first wheel and the second wheel is required to achieve a smoother turn; at this time, the rotation speed of the second rotor 3 and the output power may be adjusted to individually control the rotation speed of the second wheel by directly adjusting the rotation speed and the output power of the first rotor 2 to individually control the rotation speed of the first wheel. So that there is a suitable rotational speed difference between the first wheel and the second wheel, enabling the vehicle to make a turn smoothly.

Further, as will be understood with reference to fig. 8a and 8b, since the first rotor 2 and the second rotor 3 both adopt a structure of a rotor disc and a rotating shaft, the axial dimension is small. Therefore, the first shaft 22 of the first rotor 2 and the second shaft 32 of the second rotor 3 may both adopt shafts with smaller lengths, so that the first shaft 22 and the second shaft 32 have stronger rotational stiffness, so that the first shaft 22 may directly serve as an input shaft of the first speed reducer 51 to drive the primary driving gear 512 of the first speed reducer 51 to rotate, and the second shaft 32 may directly serve as an input shaft of the second speed reducer 52 to drive the primary driving gear 522 of the second speed reducer 52 to rotate. The first shaft 22 is directly used as the input end of the first speed reducer 51 to transmit power to the first speed reducer 51, and the second shaft 32 is directly used as the input end of the second speed reducer 52 to transmit power to the second speed reducer 52. Specifically, as shown in fig. 7 and 8a, one end of the first rotating shaft 22 is rotatably connected with the shaft sleeve 101 and the housing 4 (see fig. 1 a) of the dual mechanical port axial motor 100 through the bearing 103 and the bearing 104, and the other end penetrates the primary driving gear 512 and is rotatably disposed in the housing of the first reducer 51 through the bearing 106; as shown in fig. 7 and 8b, one end of the second rotor 3 is rotatably connected to the shaft housing 101 and the casing 4 (see fig. 1 a) of the dual mechanical port axial motor 100 through the bearing 102 and the bearing 105, and the other end penetrates the primary driving gear 522 and is rotatably disposed in the housing of the second reduction gear 52 through the bearing 107. The structure of the dual mechanical port axial motor 100 mated with the first and second reducers 51 and 52 is simplified.

If the first shaft 22 and the input shaft of the first speed reducer 51 do not share the same shaft, bearings and supporting frames are additionally added at the connection position between the first shaft 22 and the input shaft of the first speed reducer 51 to support the rotation of the first shaft 22 and the input shaft of the first speed reducer 51, and rotating structures such as engaged splines, gears and the like which are matched with each other are arranged at the connection position between the first shaft 22 and the input shaft of the first speed reducer 51. The complexity of the fabrication of the distributed drive system architecture is increased. Similarly, if the second shaft 32 and the input shaft of the second reducer 52 do not share the same shaft, the complexity of manufacturing the distributed driving system is increased.

Therefore, in the present embodiment, the first rotating shaft 22 is directly used as the input shaft of the first speed reducer 51, and the second rotating shaft 32 is directly used as the input shaft of the second speed reducer 52, which simplifies the complexity of the structure, further reduces the volume of the distributed driving system, and improves the integration level of the distributed driving system.

In this embodiment, the dual mechanical port axial motor 100 replaces the centralized dual motor structure, so that dual-shaft independent output can be satisfied, and therefore, a differential mechanism in a traditional driving system is eliminated, the output efficiency and the output freedom degree of the driving system are improved, and the number of motors is reduced, so that the structural complexity of the distributed driving system is greatly simplified, the whole volume of the distributed driving system is reduced, the occupied space is reduced, and the integration level of the distributed driving system is improved.

Those skilled in the art will appreciate that dual mechanical port axial motor 100 has the advantages of small volume, small footprint, high integration, and two mechanical ports that can be independently output. Therefore, in other embodiments, the dual mechanical port axial motor 100 may be applied to other power systems that require dual mechanical outputs, so as to improve the overall integration level of the power system and reduce the volume of the power system.

Further, it will be appreciated that the dual mechanical port axial motor 100 has two independently exportable mechanical ports, one of which is still capable of independent operation when the other is malfunctioning or damaged. Thus, in other embodiments, the two outputs of the dual mechanical port axial motor 100 may be coupled by a transmission system to form a single output and be applied to a single mechanical output power system. Thereby, two output ends of the double mechanical port axial motor 100 can be simultaneously opened so as to achieve the maximization of output power; one output end of the dual mechanical port axial motor 100 can be used as a main output end, the other output end is used as a standby output end, only the main output end is started in the normal use process, and when the main output end fails or is damaged, the standby output end is started to be used as a power source for output, so that the reliability, stability and safety of the whole operation of the power system are improved; the output can also be performed by adopting a mode of alternately outputting the two output ends of the double mechanical port axial motor 100, so that in the long-time or high-strength operation process, the condition that the single output end continuously operates to generate excessive heat or generate larger abrasion is avoided, and the operation durability and durability of the double mechanical port axial motor 100 are improved. Specifically, the method for controlling what output mode the dual mechanical port axial motor 100 adopts and what usage scenario the dual mechanical port axial motor 100 is applied to are not limited in this scheme.

As will be appreciated in conjunction with fig. 1a, an embodiment of the present application provides an automobile, which includes a wheel and the dual mechanical port axial motor 100 provided in any of the above embodiments, wherein the first rotor 2 and the second rotor 3 of the dual mechanical port axial motor 100 are in driving connection with the wheel through a transmission structure, so as to drive the wheel to rotate. As can be appreciated by those skilled in the art, the dual mechanical port axial motor 100 is driven by electricity, so in some embodiments, the vehicle may be a pure electric vehicle or a hybrid vehicle including electric driving, and since the dual mechanical port axial motor 100 occupies a small space, the vehicle has more space to accommodate the battery, and the cruising duration of the vehicle is improved.

The embodiment of the application provides an automobile, which comprises wheels and the distributed driving system provided by any embodiment, wherein the distributed driving system is used for driving the wheels to rotate. As will be appreciated in connection with fig. 7, the output shaft 511 of the first speed reducer 51 and the output shaft 521 of the second speed reducer 52 in the distributed drive system are in driving connection with the wheels through a transmission structure, thereby driving the wheels to rotate. The automobile has a driving system with smaller volume and a more flexible driving mode, the driving experience of the automobile is improved, and the utilization rate of the internal space of the automobile is improved. As will be appreciated by those skilled in the art, the distributed drive system is electrically driven, and therefore, in some embodiments, the vehicle may be a pure electric vehicle or a hybrid vehicle including electric drive.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. The double mechanical port axial motor is characterized by comprising a stator, a first rotor and a second rotor, wherein the first rotor and the second rotor are respectively arranged at two sides of the stator along the axial direction of the stator;

the stator comprises a stator core, a first stator winding and a second stator winding, wherein the first stator winding and the second stator winding are respectively arranged on two side surfaces of the stator core along the axial direction of the stator core, and the first stator winding and the second stator winding are respectively provided with a power supply port capable of independently supplying power;

the first stator winding is used for driving the first rotor to rotate;

the second stator winding is used for driving the second rotor to rotate;

the double mechanical port axial motor further comprises a shell for accommodating the stator, the first rotor and the second rotor, wherein the stator core is fixedly arranged on the inner wall of the shell and comprises a first side part and a second side part opposite to the first side part, and the two axial side surfaces of the stator core are respectively positioned on the first side part and the second side part;

The first rotor comprises a first rotor disc and a first rotating shaft which vertically penetrates through the center of the first rotor disc, the first rotating shaft comprises a first end and a second end opposite to the first end, the first end of the first rotating shaft is rotatably connected with the center of the first side part of the stator core, and the second end of the first rotating shaft penetrates through the first side surface of the shell and is rotatably connected with the shell;

the second rotor comprises a second rotor disc and a second rotating shaft which vertically penetrates through the center of the second rotor disc, the second rotating shaft comprises a first end and a second end opposite to the first end, the first end of the second rotating shaft is rotatably connected with the center of the second side part of the stator core, and the second end of the second rotating shaft penetrates through the second side surface of the shell and is rotatably connected with the shell; the second side surface of the shell and the first side surface of the shell are two opposite surfaces;

the center of the first side part of the stator core and the center of the second side part of the stator core are communicated in the axial direction of the stator core, a through hole is formed, a shaft sleeve is arranged in the through hole, two ends of the shaft sleeve are respectively connected with the first end of the first rotating shaft and the first end of the second rotating shaft in a rotating way through bearings, and the first rotating shaft and the second rotating shaft are arranged on the same axis;

The stator core is annularly arranged, a stator inner sleeve is embedded on the inner wall surface of the stator core, and the stator inner sleeve is sleeved and fixedly connected with the outside of the shaft sleeve;

the outer wall surface of the stator core is sleeved with and fixedly connected with a stator jacket, and the stator jacket is fixedly connected with the inner wall of the shell, so that the stator core is fixed on the inner wall of the shell through the stator jacket;

the stator inner sleeve and the stator outer sleeve are both arranged in an annular structure.

2. The dual mechanical port axial motor of claim 1 wherein:

the shell comprises a shell and two end covers which are respectively arranged at two ends of the shell, and each end cover is fixedly and detachably connected with the shell; the stator core is fixed and can be detachably arranged on the inner wall of the shell.

3. The dual mechanical port axial motor of claim 1 or 2, wherein the stator core includes a stator yoke and first and second stator teeth respectively disposed on both sides of the stator yoke, the first stator winding being wound on the first stator tooth, and the second stator winding being wound on the second stator tooth.

4. A distributed drive system comprising a first reducer and a second reducer, further comprising the dual mechanical port axial motor of any one of claims 1-3;

the input end of the first speed reducer is in transmission connection with the first rotor, and the input end of the second speed reducer is in transmission connection with the second rotor.

5. The distributed drive system of claim 4 wherein a first shaft of the first rotor serves as an input shaft for the first reducer and a second shaft of the second rotor serves as an input shaft for the second reducer.

6. An automobile comprising a wheel, further comprising the dual mechanical port axial motor of any one of claims 1-3; the dual mechanical port axial motor is used to drive the wheel to rotate.

7. An automobile comprising a wheel, further comprising a distributed drive system as claimed in claim 4 or 5 for driving the wheel in rotation.