Axial magnetic field motor and vehicle

Abstract

The invention discloses an axial magnetic field motor and a vehicle, the motor comprises a housing, a motor shaft, a sealing plate, a stator module and a rotor module, and the housing defines an accommodating cavity; the motor shaft rotatably penetrates through the machine shell in the axial direction. The sealing plate is arranged in the accommodating cavity, the sealing plate and the side plates enclose to form a closed stator accommodating cavity, and the sealing plate and the end cover enclose to form a rotor accommodating cavity; the stator module is arranged in the stator containing cavity and comprises a stator assembly, an outer cavity is formed between the periphery of the stator assembly and the side plate, an inner cavity is formed between the inner periphery of the stator assembly and the sealing plate, the stator assembly is fixedly connected with the side plate through a first partition plate, and the first partition plate divides the outer cavity into two sub-cavities. The shell is provided with an oil inlet and an oil outlet which are respectively communicated with the two sub-cavities; the rotor module is rotatably arranged in the rotor accommodating cavity. By means of the mode, the stator is fixed reliably, the motor has a good cooling effect, and the reliability and the NVH performance are both greatly improved.

Description

Technical Field

[0001] This application belongs to the field of motor technology, specifically relating to an axial magnetic field motor and a vehicle. Background Technology

[0002] An external rotor axial field motor is a type of motor with a circular rotor and the stator containing the excitation coils located internally, while the rotor rotates externally. In the electric vehicle industry, axial field motors are highly favored due to their high efficiency and high torque characteristics. They provide electric vehicles with excellent acceleration performance and driving range.

[0003] Existing axial field motors have low space utilization, resulting in low cooling efficiency and poor cooling effect, which reduces the reliability and power density of the motor. Summary of the Invention

[0004] This application provides an axial magnetic field motor and vehicle, which has good cooling effect, high reliability, and high power density.

[0005] To solve the above-mentioned technical problems, one technical solution adopted in this application is: providing an axial magnetic field motor, including a housing, a motor shaft, a sealing plate, a stator module, and a rotor module. The housing includes a side plate and two end covers axially connected to both sides of the side plate, the side plate and the two end covers forming a receiving cavity; the motor shaft rotatably passes through the housing axially; the sealing plate is disposed within the receiving cavity, the sealing plate and the side plate forming a closed stator receiving cavity, the stator receiving cavity surrounding the motor shaft, and the sealing plate and the end covers forming a rotor receiving cavity; the stator module is disposed within the stator receiving cavity, the stator module including a plurality of stators spaced circumferentially. The stator assembly includes a stator core and stator coils arranged around the stator core. An outer cavity is formed between the outer periphery of the stator assembly and the side plate, and an inner cavity is formed between the inner periphery of the stator assembly and the sealing plate. The outer cavity communicates with the inner cavity. The stator assembly is fixedly connected to the side plate through a first partition, which divides the outer cavity into two circumferentially distributed sub-cavities. The housing is provided with an oil inlet and an oil outlet, which are respectively connected to the two sub-cavities. The rotor module is rotatably disposed in the rotor receiving cavity. The rotor module is axially disposed on one side of the stator module and is fixedly connected to the motor shaft.

[0006] The stator module further includes a second partition plate, which is radially connected between the side plate and the sealing plate, and the second partition plate divides the stator accommodating cavity into two cavities distributed along the axial direction.

[0007] The cavities on both sides of the second partition are symmetrically arranged along the axial direction.

[0008] The two sub-cavities are arranged symmetrically along the radial direction.

[0009] The sealing plate includes an inner sealing plate and a side sealing plate. The inner sealing plate is annular and surrounds the motor shaft. The inner circumference of the side sealing plate is connected to the outer circumference of the inner sealing plate. The outer circumference of the side sealing plate is provided with a sealing groove, and a sealing ring is provided in the sealing groove. The sealing ring is pressed between the sealing groove and the side plate.

[0010] The sealing side plate includes a first sealing side plate, a second sealing side plate, and a connecting plate. The inner circumference of the first sealing side plate is connected to the outer circumference of the inner sealing plate. The second sealing side plate is disposed on the side of the first sealing side plate away from the stator module. The outer circumference of the second sealing side plate is provided with the sealing groove. The inner circumference of the second sealing side plate is connected to the outer circumference of the first sealing side plate through the connecting plate. The connecting plate is spaced apart from the side plate and is arranged around the rotor module.

[0011] The rotor module includes a rotor frame and magnets. The rotor frame is fixedly connected to the motor shaft. The magnets are disposed on the side of the rotor frame facing the stator assembly. Multiple magnets are spaced apart circumferentially. Multiple fins protrude from the side of the rotor frame away from the magnets.

[0012] The rotor frame is provided with multiple heat dissipation holes, which are axially connected to the rotor frame. The heat dissipation holes are arranged between two adjacent magnets, and the multiple heat dissipation holes between two adjacent magnets are arranged radially in a staggered manner.

[0013] The material of the second partition includes potting compound.

[0014] To solve the above-mentioned technical problems, another technical solution adopted in this application is to provide a vehicle including the axial magnetic field motor described in any of the technical solutions.

[0015] Unlike existing technologies, the advantages of this application are as follows: The external rotor motor of this application has a sealing plate between the stator module and the rotor module to divide the internal accommodating cavity of the motor into a stator accommodating cavity and a rotor accommodating cavity, wherein the stator accommodating cavity is a sealed cavity. This sealed cavity is used to accommodate the stator module, and the area of ​​this sealed cavity other than the stator module can be used to form cooling oil channels, which can cool the stator module. The cooling oil channels of this application include an outer cavity, an inner cavity, and a spacer channel connecting the outer cavity and the inner cavity. Furthermore, this application provides a first partition plate to divide the outer cavity into two sub-cavities, and connects the oil inlet and outlet to the two sub-cavities respectively. Specifically, coolant can enter an upper sub-cavity within the outer cavity through the oil inlet. The coolant flows circumferentially within this sub-cavity and, under gravity, flows into the inner cavity through multiple spaced channels (connected to the upper sub-cavity) between adjacent stator assemblies. Within the inner cavity, the coolant flows circumferentially and, under gravity, flows into the lower sub-cavity through multiple spaced channels (connected to the lower sub-cavity), continuing circumferentially within the sub-cavity. Finally, it exits the housing through the oil outlet. Because this application divides the cooling channels within the motor, it balances the pressure within the stator housing and allows the coolant to flow through more areas of the stator housing, increasing coolant circulation, reducing dead oil volume, and ensuring that all stator coils are cooled. This results in a uniform temperature distribution among the stator coils, guaranteeing effective cooling while improving motor reliability and power density. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the axial magnetic field motor of this application;

[0018] Figure 2 This is a schematic diagram of the internal structure of an embodiment of the housing of this application;

[0019] Figure 3 This is a cross-sectional schematic diagram of an embodiment of the stator housing cavity of this application;

[0020] Figure 4 This is a schematic diagram of the structure of one embodiment of the sealing plate of this application;

[0021] Figure 5 This is a schematic diagram of the structure of an embodiment of the rotor module of this application.

[0022] Reference numerals: 10. Motor; 11. Housing; 110. Receiving cavity; 1101. Outer cavity; 11011. Sub-cavity; 1102. Spacing channel; 1103. Inner cavity; 111. Side plate; 1111. Mounting slot; 112. End cover; 1121. Center hole; 11a. Oil inlet; 11b. Oil outlet; 12. Motor shaft; 13. Sealing plate; 13a. Stator receiving cavity; 13b. Rotor receiving cavity; 131. Inner sealing plate ; 132, Sealing side plate; 1321, First sealing side plate; 1322, Second sealing side plate; 1323, Connecting plate; 133, Sealing groove; 134, Sealing ring; 14, Stator module; 141, Stator assembly; 1411, Stator core; 1412, Stator coil; 142, First partition; 143, Second partition; 15, Rotor module; 151, Rotor frame; 1511, Heat dissipation hole; 152, Magnet; 153, Fin. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0024] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of an embodiment of the axial magnetic field motor of this application. Figure 2 This is a schematic diagram of the internal structure of an embodiment of the housing in this application. The axial magnetic field motor 10 can be a dual-rotor single-stator motor 10 or a single-rotor single-stator motor 10. Taking the dual-rotor single-stator motor 10 as an example, this application includes a housing 11, a motor shaft 12, two sealing plates 13, a stator module 14, and two rotor modules 15. The housing 11 includes a side plate 111 and two end caps 112 axially connected to both sides of the side plate 111. The side plate 111 and the two end caps 112 together form an accommodating cavity 110. The motor shaft 12 rotatably passes through the housing 11 axially. Specifically, the side plate 111 is cylindrical, and the two end caps 112 are circular and detachably connected to both ends of the side plate 111 by bolts, thereby forming a hollow cylindrical housing 11. The two end caps 112 have a central hole 1121 along the axial direction. The central hole 1121 passes through the inner and outer sides of the housing 11. The motor shaft 12 is arranged in the central hole 1121 along the axial direction. The motor shaft 12 is rotatably connected to the central hole 1121 through a bearing.

[0025] See Figure 1There are two sealing plates 13, which are symmetrically arranged axially within the receiving cavity 110. The two sealing plates 13 and the side plate 111 together form a closed stator receiving cavity 13a, which surrounds the motor shaft 12. The two sealing plates 13 and the two end covers 112 respectively form two rotor receiving cavities 13b. Specifically, the stator receiving cavity 13a is located in the middle of the receiving cavity 110 axially, and the two rotor receiving cavities 13b are symmetrically arranged axially on both sides of the stator receiving cavity 13a.

[0026] See Figure 2 The stator module 14 is disposed within the stator accommodating cavity 13a. The stator module 14 includes a plurality of stator assemblies 141 spaced apart circumferentially. Each stator assembly 141 includes a stator core 1411 and a stator coil 1412 surrounding the stator core 1411. The stator core 1411 may be without a yoke or with a yoke. Specifically, the stator core 1411 and the stator coil 1412 in each stator assembly 141 are fixed by potting compound, and the plurality of stator assemblies 141 are uniformly spaced circumferentially. An outer cavity 1101 is formed between the outer periphery of the stator assembly 141 and the side plate 111, and an inner cavity 1103 is formed between the inner periphery of the stator assembly 141 and the sealing plate 13. The outer cavity 1101 communicates with the inner cavity 1103. Specifically, the stator assembly 141 is radially disposed in the middle of the stator accommodating cavity 13a, such that a cavity surrounds the outside of the stator assembly 141, and an inner cavity 1103 is provided on the inner side of the stator assembly 141. The outer cavity 1101 of the inner cavity 1103 is connected to the inner cavity 1103 through a spacer channel 1102 between two adjacent stator assemblies 141. Since there are multiple stator assemblies 141, the outer cavity 1101 is connected to the inner cavity 1103 through multiple spacer channels 1102. The stator assembly 141 is fixedly connected to the side plate 111 through a first partition 142. The first partition 142 divides the outer cavity 1101 into two sub-cavities 11011 distributed circumferentially. The housing 11 is provided with an oil inlet 11a and an oil outlet 11b, which are respectively connected to the two sub-cavities 11011. Specifically, there are two first partition plates 142, both of which are arranged radially and are spaced apart circumferentially. The outer end of each first partition plate 142 is connected to the inner wall of the side plate 111, and the inner end of the first partition plate 142 is connected to the stator assembly 141.

[0027] The rotor module 15 is rotatably disposed within the rotor receiving cavity 13b. The rotor module 15 is axially disposed on one side of the stator module 14 and is fixedly connected to the motor shaft 12. There are two sets of rotor modules 15, which are respectively disposed within the two rotor receiving cavities 13b and symmetrically disposed on both sides of the stator module 14 along the axial direction.

[0028] The external rotor motor 10 of this application has a sealing plate 13 between the stator module 14 and the rotor module 15 to divide the accommodating cavity 110 inside the motor 10 into a stator accommodating cavity 13a and a rotor accommodating cavity 13b, wherein the stator accommodating cavity 13a is a sealed cavity. This sealed cavity is used to accommodate the stator module 14, and the area of ​​this sealed cavity other than the stator module 14 can be used to form a cooling oil channel, which can cool the stator module 14. The cooling oil channel of this application includes an outer cavity 1101, an inner cavity 1103, and a spacer channel 1102 connecting the outer cavity 1101 and the inner cavity 1103. Furthermore, this application provides a first partition 142 to divide the outer cavity 1101 into two sub-cavities 11011, and connects the oil inlet 11a and the oil outlet 11b to the two sub-cavities 11011 respectively. Specifically, see [reference needed]. Figure 1 As indicated by the middle arrow, coolant can enter an upper sub-cavity 11011 of the outer cavity 1101 from the oil inlet 11a on the side of the housing 11. The coolant can flow circumferentially within the sub-cavity 11011, and then, under the influence of gravity, flow into the inner cavity 1103 from multiple spaced channels 1102 (communicating with the upper sub-cavity 11011) between two adjacent stator assemblies 141. The coolant can flow circumferentially within the inner cavity 1103. Under the influence of gravity, the coolant flows into the lower sub-cavity 11011 from multiple spaced channels 1102 (communicating with the lower sub-cavity 11011), and flows circumferentially within the sub-cavity 11011. Finally, it flows out of the housing 11 from the bottom oil outlet 11b. Because this application divides the cooling channels within the motor 10, it can balance the pressure within the stator housing 13a and allow the coolant to flow through more locations within the stator housing 13a, enabling more coolant to participate in circulation, reducing dead oil volume, and ensuring that multiple stator coils 1412 can be cooled. This results in a uniform temperature distribution among the multiple stator coils 1412, ensuring the cooling effect while improving the reliability of the motor 10.

[0029] Optionally, the first partition 142 can be made of potting compound, allowing it to be formed simultaneously with the potting of the stator assembly 141. The potting compound may contain thermally conductive materials, enabling rapid heat dissipation from the coils while simultaneously fixing the stator assembly 141 to the housing 11. Specifically, the potting compound may be a high-performance epoxy impregnation resin, consisting of two components, A and B. Component A is an epoxy resin component formulated from high-purity epoxy resin, thermally conductive fillers, and other materials; component B consists of a curing agent, thermally conductive fillers, and other materials.

[0030] Furthermore, the two sub-cavities 11011 are arranged symmetrically in the radial direction. This arrangement ensures that the two sub-cavities 11011 have the same volume and shape, further balancing the pressure within the stator housing cavity 13a, thereby making the temperature distribution of the multiple stator coils 1412 more uniform.

[0031] Further, see Figure 3 and combined Figure 2 , Figure 3 This is a cross-sectional schematic diagram of an embodiment of the stator accommodating cavity of this application. In some embodiments, the stator module 14 further includes a second partition 143, which is radially connected between the side plate 111 and the sealing plate 13. The second partition 143 divides the stator accommodating cavity 13a into two cavities distributed along the axial direction. Specifically, the second partition 143 is radially filled with an outer cavity 1101, an inner cavity 1103, and a spacer channel 1102. The cavities on the left and right sides correspond to two rotor accommodating cavities 13b, respectively. The second partition 143 further divides the two sub-cavities 11011 of the outer cavity 1101 along the axial direction to form four smaller cavities, and the inner cavity 1103 is divided along the axial direction to form two smaller cavities. The second partition 143 further increases the fixing strength between the stator module 14 and the housing 11, while further dividing the stator housing cavity 13a into more cavities, further balancing the pressure in the stator housing cavity 13a, and making the cooling oil passages smoother, reducing dead oil that does not participate in circulation, thereby making the temperature distribution of the multiple stator coils 1412 more uniform, ensuring the cooling effect while improving the reliability of the motor 10.

[0032] Optionally, the second partition 143 can be made of potting compound, allowing it to be formed simultaneously with the potting of the stator assembly 141. Specifically, the stator core 1411 can be positioned using a mold before potting, and the mold closing pressure aligns the plane of the stator core 1411, improving the positional accuracy of the stator core 1411 in the motor 10 and enhancing the motor's NVH performance. The material of the second partition 143 can be the same as that of the first partition 142, enabling rapid heat dissipation from the coils while fixing the stator assembly 141 to the housing 11.

[0033] Furthermore, the cavities on both sides of the second partition 143 are symmetrically arranged along the axial direction. This arrangement makes the two cavities identical along the axial direction, further balancing the pressure within the stator housing cavity 13a, thereby making the temperature distribution of the multiple stator coils 1412 more uniform.

[0034] See Figure 3 and combined Figure 4 , Figure 4This is a schematic diagram of one embodiment of the sealing plate of this application. The sealing plate 13 includes an inner sealing plate 131 and a side sealing plate 132. The inner sealing plate 131 is annular and surrounds the motor shaft 12. Specifically, in this embodiment, after the two inner sealing plates 131 are aligned, a through hole is formed in the center of the sealing plate 13 for the motor shaft 12 to pass through. Specifically, after the end faces of the two inner sealing plates 131 are aligned, they can be fixed together by bonding or welding. The inner periphery of the side sealing plate 132 is connected to the outer periphery of the inner sealing plate 131. The outer periphery of the side sealing plate 132 is provided with a sealing groove 133. The opening of the sealing groove 133 faces the side plate 111. A sealing ring 134 is provided in the sealing groove 133 and is pressed between the sealing groove 133 and the side plate 111. The sealing side plate 132 is used to axially separate the stator receiving cavity 13a and the rotor receiving cavity 13b. The two sealing side plates 132, the two sealing inner plates 131, and the side plate 111 together form the stator receiving cavity 13a. The sealing side plate 132 is also used to achieve radial sealing with the side plate 111. Specifically, the two ends of the inner wall of the side plate 111 are provided with mounting grooves 1111. The sealing ring 134 and the sealing groove 133 are disposed in the mounting groove 1111. After the end cover 112 is fixed to the side plate 111, the sealing ring 134 and the sealing groove 133 are pressed into the mounting groove 1111.

[0035] Optionally, the inner side of the sealing side plate 132 can be fixedly connected to the stator module 14, specifically by means of bonding, ultrasonic welding, snap-fit ​​connection, etc. The above-mentioned arrangement allows the stator module 14 to be further fixed in the housing 11. On the other hand, since the sealing side plate 132 is fixed, it can prevent the sealing side plate 132 from bulging towards the rotor module 15 due to excessive pressure in the stator accommodating cavity 13a, thereby avoiding interference with the rotor module 15.

[0036] Optionally, please continue reading Figure 3 and Figure 4In some embodiments, the sealing side plate 132 includes a first sealing side plate 1321, a second sealing side plate 1322, and a connecting plate 1323. The inner periphery of the first sealing side plate 1321 is connected to the outer periphery of the inner sealing plate 131. The second sealing side plate 1322 is disposed on the side of the first sealing side plate 1321 away from the stator module 14. The outer periphery of the second sealing side plate 1322 is provided with a sealing groove 133. The inner periphery of the second sealing side plate 1322 is connected to the outer periphery of the first sealing side plate 1321 through the connecting plate 1323. The connecting plate 1323 is spaced apart from the side plate 111 and is arranged around the rotor module 15. In this embodiment, the first sealing side plate 1321, the connecting plate 1323, and the second sealing side plate 1322 form a stepped structure, so that the space between the second sealing side plate 1322 and the side plate 111 also becomes part of the outer cavity 1101, thereby increasing the storage space of coolant. Since the motor 10 can store more coolant, the specific heat capacity of the motor 10 increases in a limited space, thus improving the cooling effect.

[0037] In other embodiments, the sealing side plate 132 may also include only the second sealing side plate 1322, which extends directly toward and seals with the side plate 111.

[0038] See Figure 5 and combined Figure 1 , Figure 5This is a schematic diagram of an embodiment of the rotor module of this application. The rotor module 15 includes a rotor frame 151 and magnets 152. The rotor frame 151 is fixedly connected to the motor shaft 12. The rotor frame 151 is disc-shaped, with a through hole at its center. The motor shaft 12 passes through the through hole and is fixed thereto, so that the rotor frame 151 can drive the motor shaft 12 to rotate synchronously. Magnets 152 are disposed on the side of the rotor frame 151 facing the stator assembly 141, and multiple magnets 152 are spaced apart circumferentially. Multiple fins 153 protrude from the side of the rotor frame 151 away from the magnets 152. The magnets 152 are disposed opposite to the stator core 1411. It should be noted that since a sealing plate 13 is provided between the magnets 152 and the stator core 1411, the sealing plate 13 should be made of a non-magnetic material, such as plastic, to ensure the normal operation of the motor 10. Fins 153 are disposed on the back side of the rotor frame 151, that is, fins 153 and magnets 152 are respectively disposed on opposite sides of the rotor frame 151. Specifically, in this embodiment, each magnet 152 is provided with multiple fins 153, and the fins 153 extend radially. Multiple fins 153 protrude from one side of the rotor frame 151 in this application. The arrangement of fins 153 increases the surface area of ​​the rotor frame 151, increasing the heat dissipation area, thereby improving the heat dissipation effect of the rotor module 15. Simultaneously, when the rotor frame 151 rotates, the fins 153 can agitate the air within the rotor housing cavity 13b, thus generating a pressure difference on both sides of the rotor frame 151 according to Bernoulli's principle, to achieve the circulation of hot and cold air within the cavity, improving the heat dissipation effect. The shape and number of fins 153 can be other than those specified in this application.

[0039] Further reading Figure 5 The rotor frame 151 is provided with multiple heat dissipation holes 1511, which extend axially through the rotor frame 151. The heat dissipation holes 1511 are located between two adjacent magnets 152, and are arranged radially in a staggered manner between adjacent magnets 152. When the rotor frame 151 rotates, a pressure difference is formed on both sides, allowing hot air to be discharged through the heat dissipation holes 1511 under the action of the pressure difference, thus cooling the magnets 152. The staggered arrangement of the heat dissipation holes 1511 fully utilizes the space between adjacent magnets 152 in the rotor frame 151 to ensure effective heat dissipation. In other embodiments, the heat dissipation holes 1511 may also be arranged radially. This application does not specifically limit the number or arrangement of the heat dissipation holes 1511.

[0040] This application cools the motor 10 by using oil cooling for the stator module 14 and air cooling for the rotor module 15, resulting in good cooling effect, high cooling efficiency, and high reliability of the motor 10.

[0041] This application also provides a vehicle including an axial magnetic field motor 10 according to any embodiment. The motor 10 can serve as a drive motor for an automobile, and the drive motor 10 can be located in the engine compartment, near the front and rear axles, under the chassis, on the subframe, on the suspension system, or integrated into the wheel hub.

[0042] The above are merely embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. An axial magnetic field motor, characterized in that, include: A housing, the housing including a side plate and two end caps respectively connected to both sides of the side plate along the axial direction, the side plate and the two end caps together forming an accommodating cavity; A motor shaft that rotatably passes through the housing in an axial direction; A sealing plate is disposed within the accommodating cavity. The sealing plate and the side plate together form a closed stator accommodating cavity. The stator accommodating cavity is disposed around the motor shaft. The sealing plate and the end cover together form a rotor accommodating cavity. A stator module is fixedly disposed within the stator accommodating cavity. The stator module includes multiple stator assemblies spaced apart circumferentially. Each stator assembly includes a stator core and stator coils arranged around the stator core. An outer cavity is formed between the outer periphery of the stator assembly and the side plate, and an inner cavity is formed between the inner periphery of the stator assembly and the sealing plate. The outer cavity communicates with the inner cavity. The stator assembly is fixedly connected to the side plate via a first partition plate, which divides the outer cavity into two sub-cavities distributed circumferentially. The housing is provided with an oil inlet and an oil outlet, which are respectively connected to the two sub-cavities. The rotor module is rotatably disposed within the rotor accommodating cavity. The rotor module is axially disposed on one side of the stator module, and the rotor module is fixedly connected to the motor shaft.

2. The axial magnetic field motor according to claim 1, characterized in that, The stator module further includes a second partition plate, which is radially connected between the side plate and the sealing plate, and the second partition plate divides the stator accommodating cavity into two axially distributed cavities.

3. The axial magnetic field motor according to claim 2, characterized in that, The cavities on both sides of the second partition are symmetrically arranged along the axial direction.

4. The axial magnetic field motor according to claim 1, characterized in that, The two sub-cavities are arranged symmetrically in the radial direction.

5. The axial magnetic field motor according to any one of claims 1-4, characterized in that, The sealing plate includes an inner sealing plate and a side sealing plate. The inner sealing plate is annular and surrounds the motor shaft. The inner circumference of the side sealing plate is connected to the outer circumference of the inner sealing plate. The outer circumference of the side sealing plate is provided with a sealing groove, and a sealing ring is provided in the sealing groove. The sealing ring is pressed between the sealing groove and the side plate.

6. The axial magnetic field motor according to claim 5, characterized in that, The sealing side plate includes a first sealing side plate, a second sealing side plate, and a connecting plate. The inner circumference of the first sealing side plate is connected to the outer circumference of the inner sealing plate. The second sealing side plate is disposed on the side of the first sealing side plate away from the stator module. The outer circumference of the second sealing side plate is provided with the sealing groove. The inner circumference of the second sealing side plate is connected to the outer circumference of the first sealing side plate through the connecting plate. The connecting plate is spaced apart from the side plate and is arranged around the rotor module.

7. The axial magnetic field motor according to any one of claims 1-4, characterized in that, The rotor module includes a rotor frame and magnets. The rotor frame is fixedly connected to the motor shaft. The magnets are disposed on the side of the rotor frame facing the stator assembly. Multiple magnets are spaced apart circumferentially. Multiple fins protrude from the side of the rotor frame away from the magnets.

8. The axial magnetic field motor according to claim 7, characterized in that, The rotor frame is provided with multiple heat dissipation holes, which are axially connected to the rotor frame. The heat dissipation holes are arranged between two adjacent magnets, and the multiple heat dissipation holes between two adjacent magnets are arranged radially in a staggered manner.

9. The axial magnetic field motor according to claim 2, characterized in that, The material of the second partition includes potting compound.

10. A vehicle, characterized in that, Including the axial magnetic field motor as described in any one of claims 1-9.

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