Double-stator axial flux permanent magnet motor and vehicle

Abstract

The utility model relates to the technical field of motors, in particular to a double-stator axial flux permanent magnet motor and a vehicle. The double-stator axial magnetic flux permanent magnet motor comprises a rotor, a motor shell, a communicating piece and two stators, the motor shell comprises a first shell and a second shell which are buckled and fixed, one stator is contained in the first shell in a sealed mode, and a first liquid inlet and a first liquid outlet are formed in the first shell; the first liquid inlet and the first liquid outlet are respectively located at two sides of the wire outlet along the circumferential direction of the motor shell, the second shell accommodates the other stator in a sealing manner, the second shell is provided with a second liquid inlet and a second liquid outlet, and the second liquid inlet and the second liquid outlet are respectively located at two sides of the wire outlet along the circumferential direction of the motor shell. The first liquid inlet and the second liquid outlet are adjacently arranged in the axial direction of the motor shell, the first liquid outlet and the second liquid inlet are adjacently arranged in the axial direction of the motor shell, and the communicating piece selectively communicates with the first liquid inlet and the second liquid outlet or communicates with the first liquid outlet and the second liquid inlet.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a double-stator axial-flux permanent magnet motor and a vehicle. Background Technique

[0002] When a new energy vehicle adopts distributed drive, an independent drive motor needs to be equipped for each drive wheel. In the prior art, usually two double-stator axial-flux permanent magnet motors are used to drive two drive wheels arranged at intervals along a preset direction respectively. The double-stator axial-flux permanent magnet motor has the advantages of small volume, light weight, high power density, etc.

[0003] The existing double-stator axial-flux permanent magnet motor usually adopts a liquid cooling method for cooling. Specifically, the double-stator axial-flux permanent magnet motor includes two shell bodies fixed by buckling. Each shell body respectively seals and accommodates a stator. Liquid inlets and outlets are respectively arranged on the same side of the two shell bodies, and a coolant flow channel communicating with each other is arranged inside the two shell bodies to realize the liquid cooling cycle of the double-stator axial-flux permanent magnet motor. When two drive wheels of a vehicle adopt distributed drive, two double-stator axial-flux permanent magnet motors need to be symmetrically arranged along a preset direction, which will cause the orientations of the liquid inlets and outlets of the two double-stator axial-flux permanent magnet motors to be inconsistent, making the layout of the liquid cooling pipeline complex, and causing the liquid inlets and outlets of one of the double-stator axial-flux permanent magnet motors to face the ground, making it easy to scrape the corresponding liquid cooling pipeline during the driving process of the vehicle, creating a safety hazard, and also increasing the liquid inlet pressure of the liquid inlets and outlets facing the ground, increasing energy consumption.

[0004] Therefore, there is an urgent need for a double-stator axial-flux permanent magnet motor and a vehicle to solve the above problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a double-stator axial-flux permanent magnet motor and a vehicle, so as to make the layout of the liquid cooling pipeline simpler and more flexible, improve safety, and also reduce energy consumption.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A double-stator axial-flux permanent magnet motor, comprising:

[0008] A rotor and two stators, the two stators are arranged at intervals relative to each other along the axis of the stator, and the rotor is located between the two stators;

[0009] The motor housing is annular. There is an outlet on the motor housing. The motor housing includes a first housing and a second housing that are fastened and fixed. The first housing hermetically accommodates one of the stators. The first housing is provided with a first liquid inlet and a first liquid outlet. The first liquid inlet and the first liquid outlet are respectively located on both sides of the outlet along the circumferential direction of the motor housing. The second housing hermetically accommodates the other stator. The second housing is provided with a second liquid inlet and a second liquid outlet. The second liquid inlet and the second liquid outlet are respectively located on both sides of the outlet along the circumferential direction of the motor housing. And the first liquid inlet and the second liquid outlet are arranged adjacent to each other along the axial direction of the motor housing, and the first liquid outlet and the second liquid inlet are arranged adjacent to each other along the axial direction of the motor housing;

[0010] A connecting member, which can selectively connect the first liquid inlet and the second liquid outlet or connect the first liquid outlet and the second liquid inlet.

[0011] As an alternative, the connecting member includes a connecting pipeline. When the connecting pipeline connects the first liquid inlet and the second liquid outlet, the first end of the connecting pipeline is connected to the first liquid inlet, and the second end of the connecting pipeline is connected to the second liquid outlet;

[0012] When the connecting pipeline connects the first liquid outlet and the second liquid inlet, the first end of the connecting pipeline is connected to the first liquid outlet, and the second end of the connecting pipeline is connected to the second liquid inlet.

[0013] As an alternative, the connecting pipeline is a corrugated hose.

[0014] As an alternative, the connecting pipeline includes a first connecting pipe portion, a second connecting pipe portion, and a third connecting pipe portion. The first connecting pipe portion, the second connecting pipe portion, and the third connecting pipe portion are connected in sequence to form a U shape. The first connecting pipe portion is connected to the first liquid inlet or the first liquid outlet, and the third connecting pipe portion is connected to the second liquid outlet or the second liquid inlet.

[0015] As an alternative, the first housing includes a first housing main body and a first cover plate. The first housing main body is provided with a first accommodation cavity and a first opening communicating with the first accommodation cavity. The first accommodation cavity is used to accommodate one of the stators. The first cover plate is fastened and fixed to the first housing main body to block the first opening.

[0016] As an optional solution, the second shell includes a second shell body and a second cover plate, the second shell body is provided with a second accommodating cavity and a second opening connected to the second accommodating cavity, the second accommodating cavity is used to accommodate another stator, and the second cover plate is buckled and fixed to the second shell body to seal the second opening.

[0017] As an optional solution, the first shell and the second shell are assembled together to form a rotor accommodating chamber and the wire outlet communicated with the rotor accommodating chamber, and the rotor accommodating chamber is used to accommodate the rotor.

[0018] As an optional solution, a first protrusion is provided on a side of the first shell facing the second shell, and a second protrusion is provided on a side of the second shell facing the first shell. The first protrusion and the second protrusion are assembled together to form the rotor accommodating cavity and the wire outlet.

[0019] As an optional solution, the stator includes a stator core, and a cooling channel is provided on the stator core.

[0020] A vehicle comprises two drive wheels arranged at intervals along a preset direction, and the vehicle also comprises two dual-stator axial flux permanent magnet motors as described above, and the two dual-stator axial flux permanent magnet motors are symmetrically arranged along the preset direction, and each of the dual-stator axial flux permanent magnet motors is transmission-connected to the drive wheel on the corresponding side.

[0021] Beneficial effects of the utility model:

[0022] The present utility model provides a double-stator axial-flux permanent magnet motor. The motor housing of the double-stator axial-flux permanent magnet motor includes a first housing and a second housing that are snap-fitted and fixed. The first housing hermetically accommodates one of the stators. A first liquid inlet and a first liquid outlet are formed on the first housing. The first liquid inlet and the first liquid outlet are respectively located on both sides of the wire outlet along the circumferential direction of the motor housing. The second housing hermetically accommodates the other stator. A second liquid inlet and a second liquid outlet are formed on the second housing. The second liquid inlet and the second liquid outlet are respectively located on both sides of the wire outlet along the circumferential direction of the motor housing. Moreover, the first liquid inlet and the second liquid outlet are arranged adjacent to each other along the axial direction of the motor housing, and the first liquid outlet and the second liquid inlet are arranged adjacent to each other along the axial direction of the motor housing. And the connecting member can selectively connect the first liquid inlet and the second liquid outlet or connect the first liquid outlet and the second liquid inlet. With the above arrangement, when two such double-stator axial-flux permanent magnet motors are symmetrically arranged along a preset direction to independently drive two drive wheels of a vehicle respectively, the connection position of the connecting member can be flexibly adjusted, so that the orientations of the liquid inlet and outlet ports of the two double-stator axial-flux permanent magnet motors that are not connected with the connecting member are the same. As a result, the layout of the liquid cooling pipeline is simpler and more flexible. In addition, it can also make the liquid inlet and outlet ports of the two double-stator axial-flux permanent magnet motors that are not connected with the connecting member all face upward, avoiding rubbing against the liquid cooling pipeline connected to the liquid inlet and outlet ports, improving safety. And because the liquid inlet and outlet ports of the two double-stator axial-flux permanent magnet motors that are not connected with the connecting member all face upward, there is no need to additionally increase the pressure of the liquid inlet to the liquid inlet and outlet ports, reducing energy consumption.

[0023] The present utility model also provides a vehicle. When two such double-stator axial-flux permanent magnet motors are symmetrically arranged along a preset direction to independently drive two drive wheels of the vehicle respectively, the connection position of the connecting member can be flexibly adjusted, so that the orientations of the liquid inlet and outlet ports of the two double-stator axial-flux permanent magnet motors that are not connected with the connecting member are the same. As a result, the layout of the liquid cooling pipeline is simpler and more flexible. In addition, it can also make the liquid inlet and outlet ports of the two double-stator axial-flux permanent magnet motors that are not connected with the connecting member all face upward, avoiding rubbing against the liquid cooling pipeline connected to the liquid inlet port, improving safety. And because the liquid inlet and outlet ports of the two double-stator axial-flux permanent magnet motors that are not connected with the connecting member all face upward, there is no need to additionally increase the pressure of the liquid inlet to the liquid inlet and outlet ports, reducing energy consumption. Description of the Drawings

[0024] Figure 1 is a schematic structural diagram of two double-stator axial-flux permanent magnet motors symmetrically arranged along a preset direction provided by an embodiment of the present utility model;

[0025] Figure 2 is an exploded structural diagram of two double-stator axial-flux permanent magnet motors symmetrically arranged along a preset direction provided by an embodiment of the present utility model;

[0026] Figure 3 It is a structural sectional view of a double-stator axial-flux permanent magnet motor provided by an embodiment of the present invention;

[0027] Figure 4 It is an exploded view of the structure of a double-stator axial-flux permanent magnet motor provided by an embodiment of the present invention.

[0028] In the figure:

[0029] 10. Motor;

[0030] 1. Rotor; 2. Stator; 3. Motor housing; 31. First housing; 311. First housing body; 3111. First accommodating cavity; 3112. First opening; 3113. First protrusion; 312. First cover plate; 313. First liquid inlet; 314. First liquid outlet; 32. Second housing; 321. Second housing body; 3211. Second accommodating cavity; 3212. Second opening; 3213. Second protrusion; 322. Second cover plate; 323. Second liquid inlet; 324. Second liquid outlet; 33. Wire outlet; 34. Rotor accommodating cavity; 4. Connecting member; 41. First connecting pipe portion; 42. Second connecting pipe portion; 43. Third connecting pipe portion; 5. Output shaft. Detailed implementation manners

[0031] To make the technical problems solved by the present invention, the technical solutions adopted and the achieved technical effects clearer, the technical solutions of the present invention will be further described below with reference to the drawings and through specific implementation manners.

[0032] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0033] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above the top", and "on the top" of the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below the bottom", and "under the bottom" of the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0034] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0035] This embodiment provides a vehicle, which mainly refers to a new energy vehicle. The vehicle provided in this embodiment includes two drive wheels arranged at intervals along a preset direction. Figure 1 As shown, the vehicle also includes two dual-stator axial flux permanent magnet motors 10 (hereinafter referred to as motors 10), and the two motors 10 are symmetrically arranged along a preset direction. Each motor 10 is transmission-connected to the driving wheel on the corresponding side, so that the two motors 10 respectively drive the driving wheels on the corresponding sides to rotate, thereby realizing distributed drive of the vehicle.

[0036] like Figures 1 to 3 As shown, the motor 10 provided in this embodiment includes a rotor 1, a motor housing 3, an output shaft 5 and two stators 2, wherein the two stators 2 are arranged relatively spaced along the axial direction of the stator 2, the rotor 1 is located between the two stators 2, the output shaft 5 is arranged on the rotor 1, and the output shaft 5 is drivingly connected to the driving wheel on the corresponding side, the motor housing 3 is annular, and the motor housing 3 is provided with an outlet 33, and the motor housing 3 includes a first shell 31 and a second shell 32 that are fixed together, the first shell 31 seals and accommodates one of the stators 2, and the second shell 32 seals and accommodates the other stator 2. Optionally, in this embodiment, the first shell 31 and the second shell 32 are assembled together to form a rotor accommodating chamber 34 and an outlet 33 that is connected to the rotor accommodating chamber 34, and the rotor accommodating chamber 34 is used to accommodate the rotor 1, so as to achieve the accommodation protection of the rotor 1. By sealing and accommodating the two stators 2 in one shell respectively, the two stators 2 can be independently cooled by liquid cooling, thereby ensuring the normal operation of the entire motor 10. Optionally, oil cooling may be used to liquid-cool the two stators 2 to dissipate heat.

[0037] When the existing motor is cooled by liquid cooling, an inlet and an outlet are usually provided on the same side of the two outer casings respectively, and mutually connected coolant flow channels are provided inside the two outer casings to realize the liquid cooling cycle of the motor. When two motors are symmetrically arranged along a preset direction to drive the corresponding drive wheels on each side to rotate respectively, the orientations of the inlets and outlets of the two motors will be inconsistent, making the layout of the liquid cooling pipelines complex. Moreover, it causes the inlets and outlets of one of the motors to face the ground, making it easy to scrape the correspondingly arranged liquid cooling pipelines during the driving of the vehicle, posing a safety hazard. Also, it is necessary to increase the liquid inlet pressure for the inlets and outlets facing the ground, increasing energy consumption.

[0038] To solve the above problems, as Figure 1 and Figure 2 shown, the motor 10 provided in this embodiment further includes a connecting member 4. A first liquid inlet 313 and a first liquid outlet 314 are provided on the first housing 31. The first liquid inlet 313 and the first liquid outlet 314 are respectively located on both sides of the wire outlet 33 along the circumferential direction of the motor housing 3. A second liquid inlet 323 and a second liquid outlet 324 are provided on the second housing 32. The second liquid inlet 323 and the second liquid outlet 324 are respectively located on both sides of the wire outlet 33 along the circumferential direction of the motor housing 3. Moreover, the first liquid inlet 313 and the second liquid outlet 324 are arranged adjacent to each other along the axial direction of the motor housing 3, and the first liquid outlet 314 and the second liquid inlet 323 are arranged adjacent to each other along the axial direction of the motor housing 3. The connecting member 4 can selectively connect the first liquid inlet 313 and the second liquid outlet 324 or connect the first liquid outlet 314 and the second liquid inlet 323.

[0039] With the above arrangement, when two motors 10 are symmetrically arranged along a preset direction to independently drive the two drive wheels of the vehicle respectively, the connection position of the connecting member 4 can be flexibly adjusted, so that the orientations of the inlets and outlets of the two motors 10 without the connecting member 4 are the same. As a result, the layout of the liquid cooling pipelines is simpler and more flexible. In addition, it can also make the inlets and outlets of the two motors 10 without the connecting member 4 face upward, avoiding scraping the liquid cooling pipelines connected to the inlets and outlets, improving safety. And since the inlets and outlets of the two motors 10 without the connecting member 4 face upward, there is no need to additionally increase the liquid inlet pressure for the inlets and outlets, reducing energy consumption.

[0040] Exemplarily illustrate, as Figure 1 and Figure 2As shown in the figure, when the two motors 10 are symmetrically arranged along the preset direction, the connecting member 4 of one of the motors 10 can connect the first liquid outlet 314 arranged downward and the second liquid inlet 323. At this time, the coolant passing through externally can enter the first housing 31 through the first liquid inlet 313. After cooling the stator 2 in the first housing 31, it then enters the second housing 32 through the first liquid outlet 314, the connecting member 4 and the second liquid inlet 323 in sequence. After cooling the stator 2 in the second housing 32, it is finally discharged through the second liquid outlet 324, and so on, to achieve liquid cooling and temperature reduction of the motor 10. When the connecting member 4 of one of the motors 10 connects the first liquid outlet 314 arranged downward and the second liquid inlet 323, the connecting member 4 of the other motor 10 needs to connect the first liquid inlet 313 and the second liquid outlet 324 arranged downward. At this time, the coolant passing through externally can enter the second housing 32 through the second liquid inlet 323. After cooling the stator 2 in the second housing 32, it then enters the first housing 31 through the second liquid outlet 324, the connecting member 4 and the first liquid inlet 313 in sequence. After cooling the stator 2 in the first housing 31, it is finally discharged through the first liquid outlet 314, and so on, to achieve liquid cooling and temperature reduction of the motor 10. The above settings make the first liquid inlet 313 and the second liquid outlet 324 of one of the motors 10 without the connecting member 4 arranged upward, and the first liquid outlet 314 and the second liquid inlet 323 of the other motor 10 without the connecting member 4 also arranged upward. It should be noted that the orientations of the outlet ports 33 of the two motors 10 are the same.

[0041] In this embodiment, the connecting member 4 includes a connecting pipe. When the connecting pipe connects the first liquid inlet 313 and the second liquid outlet 324, the first end of the connecting pipe is connected to the first liquid inlet 313, and the second end of the connecting pipe is connected to the second liquid outlet 324. When the connecting pipe connects the first liquid outlet 314 and the second liquid inlet 323, the first end of the connecting pipe is connected to the first liquid outlet 314, and the second end of the connecting pipe is connected to the second liquid inlet 323.

[0042] Specifically, as Figure 1 and Figure 2As shown, the connecting pipeline includes a first connecting pipe portion 41, a second connecting pipe portion 42, and a third connecting pipe portion 43. The first connecting pipe portion 41, the second connecting pipe portion 42, and the third connecting pipe portion 43 are connected in sequence to form a U shape. The first connecting pipe portion 41 is connected to the first liquid inlet 313 or the first liquid outlet 314, and the third connecting pipe portion 43 is connected to the second liquid outlet 324 or the second liquid inlet 323. It should be noted that when the connecting pipeline connects the first liquid inlet 313 and the second liquid outlet 324, the first connecting pipe portion 41 communicates with the first liquid inlet 313, and the third connecting pipe portion 43 communicates with the second liquid outlet 324; when the connecting pipeline connects the first liquid outlet 314 and the second liquid inlet 323, the first connecting pipe portion 41 is connected to the first liquid outlet 314, and the third connecting pipe portion 43 is connected to the second liquid inlet 323. By designing the connecting pipeline into a U shape, it is more convenient to connect the connecting pipeline to the corresponding liquid ports.

[0043] Optionally, the connecting pipeline is a corrugated hose. By designing the connecting pipeline in the form of a corrugated hose, it is more convenient to adjust the shape and connection position of the connecting pipeline, making the installation operation of the connecting pipeline more convenient.

[0044] In this embodiment, the stator 2 includes a stator core, and a cooling channel is provided on the stator core. By providing a cooling channel on the stator core, it is more convenient for the coolant entering the housing to flow into the cooling channel, thereby better cooling and cooling down the stator core. Optionally, the cooling channel can be a plurality of cooling through holes, and the cooling through holes penetrate the stator core along the radial direction of the stator core.

[0045] In this embodiment, as Figure 3 and Figure 4 shown, the first housing 31 includes a first housing main body 311 and a first cover plate 312. Among them, the first housing main body 311 is provided with a first accommodating cavity 3111 and a first opening 3112 communicating with the first accommodating cavity 3111. The first accommodating cavity 3111 is used to accommodate one of the stators 2, and the first cover plate 312 is buckled and fixed to the first housing main body 311 to block the first opening 3112. The above setting ensures the sealing effect of the first housing 31 for accommodating the stator 2. It should be noted that both the first liquid inlet 313 and the first liquid outlet 314 communicate with the first accommodating cavity 3111.

[0046] Optionally, in this embodiment, as Figure 3 and Figure 4As shown, the second housing 32 includes a second housing body 321 and a second cover plate 322. The second housing body 321 is provided with a second accommodating cavity 3211 and a second opening 3212 communicating with the second accommodating cavity 3211. The second accommodating cavity 3211 is used for accommodating another stator 2. The second cover plate 322 is snap-fitted and fixed to the second housing body 321 to block the second opening 3212. The above arrangement ensures the sealing effect of the accommodation of the stator 2 by the second housing 32. It should be noted that both the second liquid inlet 323 and the second liquid outlet 324 communicate with the second accommodating cavity 3211.

[0047] In this embodiment, as Figure 3 and Figure 4 shown, a first protrusion 3113 protrudes from one side of the first housing 31 facing the second housing 32, and a second protrusion 3213 protrudes from one side of the second housing 32 facing the first housing 31. The first protrusion 3113 and the second protrusion 3213 are jointly assembled to form a rotor accommodating cavity 34 and a wire outlet 33. Specifically, in this embodiment, a first protrusion 3113 protrudes from one side of the first housing body 311 facing the second housing 32, and a second protrusion 3213 protrudes from one side of the second housing body 321 facing the first housing 31.

[0048] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A dual-stator axial flux permanent magnet motor, characterized in that: include: A rotor (1) and two stators (2), wherein the two stators (2) are arranged relatively spaced apart along the axial direction of the stators (2), and the rotor (1) is located between the two stators (2); The motor housing (3) is annular, and is provided with a wire outlet (33). The motor housing (3) comprises a first shell (31) and a second shell (32) that are fastened and fixed, the first shell (31) sealingly accommodating one of the stators (2), the first shell (31) being provided with a first liquid inlet (313) and a first liquid outlet (314), the first liquid inlet (313) and the first liquid outlet (314) being respectively located on both sides of the wire outlet (33) along the circumference of the motor housing (3), and the second shell (32) Another stator (2) is sealed and accommodated therein; a second liquid inlet (323) and a second liquid outlet (324) are provided on the second shell (32); the second liquid inlet (323) and the second liquid outlet (324) are respectively located on both sides of the outlet (33) along the circumference of the motor housing (3); the first liquid inlet (313) and the second liquid outlet (324) are adjacently arranged along the axial direction of the motor housing (3); and the first liquid outlet (314) and the second liquid inlet (323) are adjacently arranged along the axial direction of the motor housing (3); A connecting piece (4), wherein the connecting piece (4) can selectively connect the first liquid inlet (313) and the second liquid outlet (324) or connect the first liquid outlet (314) and the second liquid inlet (323).

2. The dual-stator axial flux permanent magnet motor according to claim 1, characterized in that: The connecting piece (4) comprises a connecting pipeline, and when the connecting pipeline connects the first liquid inlet (313) and the second liquid outlet (324), the first end of the connecting pipeline is connected to the first liquid inlet (313), and the second end of the connecting pipeline is connected to the second liquid outlet (324); When the connecting pipeline is connected to the first liquid outlet (314) and the second liquid inlet (323), the first end of the connecting pipeline is connected to the first liquid outlet (314), and the second end of the connecting pipeline is connected to the second liquid inlet (323).

3. The dual-stator axial flux permanent magnet motor according to claim 2, characterized in that: The connecting pipeline is a corrugated hose.

4. The dual-stator axial flux permanent magnet motor according to claim 2, characterized in that: The connecting pipeline comprises a first connecting pipe portion (41), a second connecting pipe portion (42) and a third connecting pipe portion (43); the first connecting pipe portion (41), the second connecting pipe portion (42) and the third connecting pipe portion (43) are connected in sequence to form a U shape; the first connecting pipe portion (41) is connected to the first liquid inlet (313) or the first liquid outlet (314); and the third connecting pipe portion (43) is connected to the second liquid outlet (324) or the second liquid inlet (323).

5. The dual-stator axial flux permanent magnet motor according to any one of claims 1 to 4, characterized in that: The first shell (31) comprises a first shell body (311) and a first cover plate (312); the first shell body (311) is provided with a first accommodating cavity (3111) and a first opening (3112) connected to the first accommodating cavity (3111); the first accommodating cavity (3111) is used to accommodate one of the stators (2); the first cover plate (312) is fastened and fixed to the first shell body (311) to block the first opening (3112).

6. The dual-stator axial flux permanent magnet motor according to any one of claims 1 to 4, characterized in that: The second shell (32) comprises a second shell body (321) and a second cover plate (322); the second shell body (321) is provided with a second accommodating cavity (3211) and a second opening (3212) communicating with the second accommodating cavity (3211); the second accommodating cavity (3211) is used for accommodating another stator (2); the second cover plate (322) is fastened and fixed to the second shell body (321) to block the second opening (3212).

7. The dual-stator axial flux permanent magnet motor according to any one of claims 1 to 4, characterized in that: The first shell (31) and the second shell (32) are assembled together to form a rotor accommodating chamber (34) and the wire outlet (33) connected to the rotor accommodating chamber (34), and the rotor accommodating chamber (34) is used to accommodate the rotor (1).

8. The dual-stator axial flux permanent magnet motor according to claim 7, characterized in that: A first protrusion (3113) is protruded on one side of the first shell (31) facing the second shell (32), and a second protrusion (3213) is protruded on one side of the second shell (32) facing the first shell (31). The first protrusion (3113) and the second protrusion (3213) are assembled together to form the rotor accommodating cavity (34) and the wire outlet (33).

9. The dual-stator axial flux permanent magnet motor according to any one of claims 1 to 4, characterized in that: The stator (2) comprises a stator core, and a cooling channel is arranged on the stator core.

10. A vehicle, characterized in that: The vehicle comprises two driving wheels arranged at intervals along a preset direction, and the vehicle also comprises two dual-stator axial flux permanent magnet motors as described in any one of claims 1 to 9, and the two dual-stator axial flux permanent magnet motors are symmetrically arranged along the preset direction, and each of the dual-stator axial flux permanent magnet motors is transmission-connected to the driving wheel on the corresponding side.

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