Axial flux motor, electric driving device, electric driving system and electric equipment

Abstract

The invention provides an axial magnetic flux motor, an electric driving device, an electric driving system and electric equipment.The axial magnetic flux motor comprises a shell, a rotor and a stator, the rotor comprises a first shell and a rotor body, the first shell is provided with a first containing cavity used for containing the rotor body, and the stator comprises a second shell, a separator and a stator body; the first shell is provided with a first accommodating cavity for accommodating the stator main body, the second shell is provided with a second accommodating cavity for accommodating the stator main body, the separator is arranged between the first shell and the second shell to separate the first accommodating cavity from the second accommodating cavity, the second shell and the separator are fixedly connected to the stator main body, and the stator main body is fixedly connected to the shell. According to the axial magnetic flux motor provided by the invention, the second shell and the separator are fixedly connected with the stator main body, and the stator main body is fixedly connected with the shell, so that the risk of interference between the separator and the rotor main body is effectively reduced, and meanwhile, the risk of interference between the second shell and other parts of the axial magnetic flux motor is effectively reduced.

Description

Technical Field

[0001] The present application relates to the field of electric drive technology, and in particular to an axial flux motor, an electric drive device, an electric drive system and an electric device. Background Art

[0002] The axial flux motor is a power device for converting electrical energy into mechanical energy. The axial flux motor usually includes a stator and a rotor. In order to separate the rotor body of the rotor and other components of the axial flux motor from the stator body of the stator, a shell and a partition are usually provided on the stator. The partition is provided between the stator body and the rotor body, and the shell is used to accommodate the stator body. However, during the operation of the axial flux motor, the partition is prone to deformation in the direction of the rotor, resulting in interference between the rotor body and the partition, and the shell is prone to shaking, resulting in interference between the shell and other components of the axial flux motor, which is not conducive to improving the performance of the axial flux motor. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide an axial flux motor, an electric drive device, an electric drive system and an electric equipment to solve the technical problems in the related art that the stator partition is prone to interfere with the rotor body and the stator shell is prone to interfere with other components of the axial flux motor.

[0004] To achieve the above purpose, the technical solution adopted in the embodiment of the present application is: to provide an axial flux motor, comprising:

[0005] shell;

[0006] A rotor is accommodated in the housing, the rotor comprising a first shell and a rotor body, the first shell having a first cavity for accommodating the rotor body;

[0007] The stator is accommodated in the shell, and the stator includes a second shell, a partition and a stator body. The second shell has a second cavity for accommodating the stator body. The partition is arranged between the first shell and the second shell to separate the first cavity and the second cavity. The second shell and the partition are fixedly connected to the stator body, and the stator body is fixedly connected to the shell.

[0008] The axial flux motor provided by the embodiment of the present application has at least the following beneficial effects: the axial flux motor provided by the embodiment of the present application fixes the second shell and the partition to the stator body, and fixes the stator body to the outer shell, so that the position of the part where the partition is fixedly connected to the stator body is relatively fixed with the position of the rotor body, effectively improving the deformation of the partition toward the rotor body, thereby effectively reducing the risk of interference between the partition and the rotor body, and at the same time making the stator body, the second shell and the outer shell relatively fixed, effectively improving the shaking of the second shell, thereby effectively reducing the risk of interference between the second shell and other components of the axial flux motor, which is beneficial to improving the performance of the axial flux motor.

[0009] In some embodiments of the present application, the stator body includes a plurality of cores and a plurality of slot wedges, a winding slot is formed between two adjacent cores, and the slot wedges are inserted into the winding slots and fixedly connected to the partitions.

[0010] By adopting the above technical solution, a slot wedge of corresponding material can be selected according to the material of the partition, so that the material of the slot wedge is the same as that of the partition, or the material type of the slot wedge is the same as that of the partition, thereby effectively improving the connection strength between the slot wedge and the partition.

[0011] In some embodiments of the present application, the slot wedge includes an insert portion and a first connecting portion, the insert portion is inserted into the winding slot, the first connecting portion is arranged on a side of the insert portion facing the partition, the first connecting portion extends out of the winding slot and is fixedly connected to the partition.

[0012] By adopting the above technical solution, the connection stress between the slot wedge and the separator is effectively reduced, thereby effectively improving the connection stability between the slot wedge and the separator.

[0013] In some embodiments of the present application, the partition is provided with a first connection hole, and the first connection part is fixedly connected in the first connection hole; or, the partition is provided with a first connection groove, and the first connection part is fixedly connected in the first connection groove.

[0014] By adopting the above technical solution, the connection area between the slot wedge and the partition is effectively increased, thereby further improving the connection strength between the slot wedge and the partition.

[0015] In some embodiments of the present application, a second connecting portion is provided on a side of the separator facing the stator body, and the second connecting portion extends into the winding slot and is fixedly connected to the slot wedge.

[0016] By adopting the above technical solution, the connection stress between the slot wedge and the separator is effectively reduced, thereby effectively improving the connection stability between the slot wedge and the separator.

[0017] In some embodiments of the present application, the slot wedge includes an insert portion, which is inserted into the winding slot; the insert portion is provided with a second connecting hole, and the second connecting portion is fixedly connected to the second connecting hole; or, the insert portion is provided with a second connecting groove, and the second connecting portion is fixedly connected to the second connecting groove.

[0018] By adopting the above technical solution, the connection area between the slot wedge and the partition is effectively increased, thereby further improving the connection strength between the slot wedge and the partition.

[0019] In some embodiments of the present application, the slot wedge includes an insert portion, which is inserted into the winding slot, and the insert portion has a first connecting surface on the side facing the partition, and the partition has a second connecting surface on the side facing the stator body, and the first connecting surface is fixedly connected to the second connecting surface.

[0020] By adopting the above technical solution, the connection area between the slot wedge and the partition is effectively increased, thereby further improving the connection strength between the slot wedge and the partition.

[0021] In some embodiments of the present application, the slot wedge is hot-riveted, welded, or bonded to the separator.

[0022] By adopting the above technical solution, the connection between the slot wedge and the separator is effectively achieved.

[0023] In some embodiments of the present application, the second housing has a first outer annular wall arranged on the outer peripheral side of the stator body, and the end side of the first outer annular wall facing the partition is fixedly connected to the partition.

[0024] By adopting the above technical solution, the position of the part where the separator is fixedly connected to the first outer ring wall is relatively fixed with the position of the rotor body, which further improves the deformation of the separator toward the rotor body, thereby further reducing the risk of interference between the separator and the rotor body.

[0025] In some embodiments of the present application, a third connecting portion is provided on the end side of the first outer ring wall facing the partition, and the third connecting portion is fixedly connected to the partition.

[0026] By adopting the above technical solution, it is convenient to fix the first outer ring wall and the partition member.

[0027] In some embodiments of the present application, the partition is provided with a third connection hole, and the third connection part is fixedly connected in the third connection hole; or, the partition is provided with a third connection groove, and the third connection part is fixedly connected in the third connection groove.

[0028] By adopting the above technical solution, the connection area between the first outer annular wall and the partition is effectively increased, thereby further improving the connection strength between the first outer annular wall and the partition.

[0029] In some embodiments of the present application, a fourth connection portion is provided on a side of the separator facing the stator body, and the fourth connection portion is fixedly connected to the end side of the first outer ring wall facing the separator.

[0030] By adopting the above technical solution, it is convenient to fix the first outer ring wall and the partition member.

[0031] In some embodiments of the present application, a fourth connecting hole is opened on the end side of the first outer annular wall facing the partition, and the fourth connecting portion is fixedly connected in the fourth connecting hole; or, a fourth connecting groove is opened on the end side of the first outer annular wall facing the partition, and the fourth connecting portion is fixedly connected in the fourth connecting groove.

[0032] By adopting the above technical solution, the connection area between the first outer annular wall and the partition is effectively increased, thereby further improving the connection strength between the first outer annular wall and the partition.

[0033] In some embodiments of the present application, the end side of the first outer ring wall facing the partition has a third connecting surface, and the side of the partition facing the stator body has a fourth connecting surface, and the third connecting surface is fixedly connected to the fourth connecting surface.

[0034] By adopting the above technical solution, the connection area between the first outer annular wall and the partition is effectively increased, thereby further improving the connection strength between the first outer annular wall and the partition.

[0035] In some embodiments of the present application, an axial cavity is opened in the middle portion of the stator body, the rotor also includes a rotating shaft fixedly connected to the rotor body, the rotating shaft passes through the axial cavity, and the second shell also has a first inner ring wall arranged in the axial cavity, the first inner ring wall is arranged around the rotating shaft, and the end side of the first inner ring wall facing the partition is fixedly connected to the partition.

[0036] By adopting the above technical solution, the position of the part where the separator is fixedly connected to the first inner ring wall is relatively fixed with the position of the rotor body, which further improves the deformation of the separator toward the rotor body, thereby further reducing the risk of interference between the separator and the rotor body.

[0037] In some embodiments of the present application, a fifth connecting portion is provided on the end side of the first inner annular wall facing the partition, and the fifth connecting portion is fixedly connected to the partition.

[0038] By adopting the above technical solution, it is convenient to fix the first inner ring wall and the partition member.

[0039] In some embodiments of the present application, the partition is provided with a fifth connection hole, and the fifth connection part is fixedly connected in the fifth connection hole; or, the partition is provided with a fifth connection groove, and the fifth connection part is fixedly connected in the fifth connection groove.

[0040] By adopting the above technical solution, the connection area between the first inner annular wall and the partition is effectively increased, thereby further improving the connection strength between the first inner annular wall and the partition.

[0041] In some embodiments of the present application, a sixth connection portion is provided on a side of the separator facing the stator body, and the sixth connection portion is fixedly connected to the end side of the first inner ring wall facing the separator.

[0042] By adopting the above technical solution, it is convenient to fix the first inner ring wall and the partition member.

[0043] In some embodiments of the present application, the first inner annular wall is provided with a sixth connecting hole, and the sixth connecting portion is fixedly connected in the sixth connecting hole; or, the end side of the first inner annular wall facing the partition is provided with a sixth connecting groove, and the sixth connecting portion is fixedly connected in the sixth connecting groove.

[0044] By adopting the above technical solution, the connection area between the first inner annular wall and the partition is effectively increased, thereby further improving the connection strength between the first inner annular wall and the partition.

[0045] In some embodiments of the present application, the end side of the first inner ring wall facing the partition has a fifth connecting surface, and the side of the partition facing the stator body has a sixth connecting surface, and the fifth connecting surface is fixedly connected to the sixth connecting surface.

[0046] By adopting the above technical solution, the connection area between the first inner annular wall and the partition is effectively increased, thereby further improving the connection strength between the first inner annular wall and the partition.

[0047] In some embodiments of the present application, the second shell includes a frame, and the frame is fixedly connected to the stator body.

[0048] By adopting the above technical solution, the structural strength of the second shell is effectively improved, thereby effectively reducing the risk of deformation of the second shell, and further reducing the risk of interference between the second shell and other components of the axial flux motor.

[0049] In some embodiments of the present application, the skeleton is a metal part, and the skeleton is arranged on the non-air gap side of the stator body.

[0050] By adopting the above technical solution, the structural strength of the second shell is further improved without increasing the magnetic resistance between the stator body and the rotor body, thereby further reducing the risk of deformation of the second shell.

[0051] In some embodiments of the present application, the skeleton includes a first frame body, which is disposed on a side of the stator body facing away from the rotor body and is fixedly connected to the stator body.

[0052] By adopting the above technical solution, it is convenient to fix the frame and the stator body.

[0053] In some embodiments of the present application, the first frame includes a first supporting portion and a seventh connecting portion. The first supporting portion is arranged around the central axis of the axial flux motor, and the seventh connecting portion is protruded from the periphery of the first supporting portion and is fixedly connected to the side of the stator body facing away from the rotor body.

[0054] By adopting the above technical solution, it is convenient to fix the frame and the stator body.

[0055] In some embodiments of the present application, the seventh connecting portion is an annular structure and is arranged around the central axis of the axial flux motor.

[0056] By adopting the above technical solution, the connection part between the seventh connection part and the stator body can be set to a closed-loop structure. In this way, not only the connection strength between the seventh connection part and the stator body is effectively improved, thereby further improving the shaking of the second shell, but also an annular sealing boundary can be formed between the seventh connection part and the stator body, and sealing can be achieved without the need to additionally set a sealing structure between the side of the stator body facing away from the rotor body and the second shell, thereby effectively simplifying the structure of the stator.

[0057] In some embodiments of the present application, the seventh connection portion includes a plurality of first connection members spaced apart along the circumference of the first support portion, the first connection members protrude from the periphery of the first support portion and are fixedly connected to a side of the stator body facing away from the rotor body.

[0058] By adopting the above technical solution, the material consumption of the skeleton is effectively reduced while ensuring sufficient connection strength between the seventh connecting portion and the stator body, thereby effectively reducing the production cost of the stator.

[0059] In some embodiments of the present application, the skeleton further includes a second frame body, and the second frame body is arranged around the outer peripheral side of the stator body.

[0060] By adopting the above technical solution, the structural strength of the second shell is further improved, thereby further reducing the risk of deformation of the second shell.

[0061] In some embodiments of the present application, the second frame is fixedly connected to the first supporting portion.

[0062] By adopting the above technical solution, the overall structural strength of the skeleton is effectively improved, thereby further improving the structural strength of the second shell and further reducing the risk of deformation of the second shell.

[0063] In some embodiments of the present application, the second shell further includes a first insulator, and the first insulator covers the second frame.

[0064] By adopting the above technical solution, the second frame can be insulated and separated from the winding of the stator, thereby effectively improving the insulation performance of the stator.

[0065] In some embodiments of the present application, the first frame also includes a second support portion and an eighth connecting portion, the second support portion is arranged in the inner annular space of the first support portion and is arranged around the central axis of the axial flux motor, and the eighth connecting portion is protruded from the periphery of the second support portion and is fixedly connected to the side of the stator body facing away from the rotor body.

[0066] By adopting the above technical solution, not only the structural strength of the second shell is further improved, thereby further reducing the risk of deformation of the second shell, but also the connection strength between the skeleton and the stator body is further improved, thereby further improving the shaking of the second shell.

[0067] In some embodiments of the present application, the eighth connecting portion is an annular structure and is arranged around the central axis of the axial flux motor.

[0068] By adopting the above technical solution, the connection part between the eighth connection part and the stator body can be set to a closed-loop structure. In this way, not only the connection strength between the eighth connection part and the stator body is effectively improved, thereby further improving the shaking of the second shell, but also an annular sealing boundary can be formed between the eighth connection part and the stator body, and sealing can be achieved without the need to set an additional sealing structure between the side of the stator body facing away from the rotor body and the second shell, thereby effectively simplifying the structure of the stator.

[0069] In some embodiments of the present application, the eighth connection portion includes a plurality of second connection members spaced apart along the circumference of the second support portion, the second connection members protrude from the periphery of the second support portion and are fixedly connected to a side of the stator body facing away from the rotor body.

[0070] By adopting the above technical solution, the material usage of the skeleton is effectively reduced while ensuring sufficient connection strength between the eighth connecting portion and the stator body, thereby effectively reducing the production cost of the stator.

[0071] In some embodiments of the present application, an axial cavity is opened in the middle of the stator body, the rotor also includes a rotating shaft fixedly connected to the rotor body, the rotating shaft passes through the axial cavity, and the skeleton also includes a third frame arranged in the axial cavity, and the third frame is arranged around the rotating shaft.

[0072] By adopting the above technical solution, the structural strength of the second shell is further improved, thereby further reducing the risk of deformation of the second shell.

[0073] In some embodiments of the present application, the third frame is fixedly connected to the second supporting portion.

[0074] By adopting the above technical solution, the overall structural strength of the skeleton is effectively improved, and the structural strength of the second shell is further improved, thereby further reducing the risk of deformation of the second shell.

[0075] In some embodiments of the present application, the second shell further includes a second insulator, and the second insulator covers the third frame.

[0076] By adopting the above technical solution, the third frame can be insulated and separated from the winding of the stator, thereby effectively improving the insulation performance of the stator.

[0077] In some embodiments of the present application, the second shell is sleeved on the stator body and is interference connected with the stator body.

[0078] By adopting the above technical solution, it is convenient to fix the stator body and the second housing.

[0079] In some embodiments of the present application, a gap is provided on the wall of the second shell, and the stator body is fixedly connected to the shell through the gap.

[0080] By adopting the above technical solution, it is convenient to fix the stator body and the shell together.

[0081] In some embodiments of the present application, the stator body is sealedly connected to the second shell to seal and separate the gap from the second cavity, the second shell is sealedly connected to the partition, the second cavity contains a cooling medium, and at least a portion of the stator body is immersed in the cooling medium.

[0082] By adopting the above technical solution, the second cavity is effectively separated from the first cavity, which effectively improves the situation where the cooling medium in the second cavity directly enters the first cavity, thereby reducing the risk of the rotor body being immersed in the cooling medium and effectively reducing the loss of the axial flux motor.

[0083] In some embodiments of the present application, the second shell has a first cooling interface connected to the liquid inlet pipeline and a second cooling interface connected to the liquid outlet pipeline. The first cooling interface and the second cooling interface are connected to the second cavity, and the height of the first cooling interface is smaller than the height of the second cooling interface.

[0084] By adopting the above technical solution, the cooling medium flows into the second cavity from the lower part of the second shell and flows out of the second cavity from the higher part of the second shell. In this way, the gas in the second cavity is effectively discharged to the outside, which effectively improves the air entrainment phenomenon of the cooling medium, thereby effectively improving the cooling efficiency of the axial flux motor.

[0085] In some embodiments of the present application, the first cooling interface is opened at the bottom of the second shell, and the second cooling interface is opened at the top of the second shell.

[0086] By adopting the above technical solution, the air entrainment phenomenon of the cooling medium is further improved, thereby further improving the cooling efficiency of the axial flux motor.

[0087] In some embodiments of the present application, the second shell is sealed and connected to the partition, and the axial flux motor also includes a sealing assembly, which is arranged between the outer shell and the second shell, so that the outer shell, the second shell, and the sealing assembly enclose a third cavity, and the third cavity is connected to the second cavity through a gap to form a cooling cavity, and the cooling cavity contains a cooling medium, and at least a portion of the stator body is immersed in the cooling medium.

[0088] By adopting the above technical solution, the cooling chamber is effectively separated from the first cavity, which effectively improves the situation where the cooling medium in the cooling chamber directly enters the first cavity, thereby reducing the risk of the rotor body being immersed in the cooling medium and effectively reducing the loss of the axial flux motor.

[0089] In some embodiments of the present application, the second shell has a first inner ring wall and a first outer ring wall arranged in an annular shape on the first inner ring wall, the stator body is arranged between the first inner ring wall and the first outer ring wall, the outer shell has a second outer ring wall arranged in annular shape on the first outer ring wall and a second inner ring wall arranged in the inner ring space of the first inner ring wall, the sealing assembly includes a first seal and a second seal, the first seal is arranged between the first outer ring wall and the second outer ring wall, and the second seal is arranged between the first inner ring wall and the second inner ring wall.

[0090] By adopting the above technical solution, the cooling chamber is effectively separated from the first cavity, which effectively improves the situation where the cooling medium in the cooling chamber directly enters the first cavity, thereby reducing the risk of the rotor body being immersed in the cooling medium and effectively reducing the loss of the axial flux motor.

[0091] In some embodiments of the present application, the shell has a third cooling interface connected to the liquid inlet pipeline and a fourth cooling interface connected to the liquid outlet pipeline. The third cooling interface and the fourth cooling interface are connected to the cooling cavity, and the height of the third cooling interface is less than the height of the fourth cooling interface.

[0092] By adopting the above technical solution, the cooling medium flows into the cooling cavity from the lower part of the shell and flows out of the cooling cavity from the higher part of the shell. In this way, the gas in the cooling cavity is effectively discharged to the outside, which effectively improves the air entrainment phenomenon of the cooling medium, thereby effectively improving the cooling efficiency of the axial flux motor.

[0093] In some embodiments of the present application, the third cooling interface is opened at the bottom of the shell, and the fourth cooling interface is opened at the top of the shell.

[0094] By adopting the above technical solution, the air entrainment phenomenon of the cooling medium is further improved, thereby further improving the cooling efficiency of the axial flux motor.

[0095] In some embodiments of the present application, a through hole is formed in the cavity wall of the first cavity.

[0096] By adopting the above technical solution, the first cavity is connected to the external space of the first shell. During the high-speed rotation of the rotor body, the air pressure in the first cavity and the air pressure in the external space of the first shell can be in a balanced state, thereby effectively improving the performance of the rotor.

[0097] In some embodiments of the present application, there are multiple through holes, and the multiple through holes are arranged along the circumference of the rotor body.

[0098] By adopting the above technical solution, the air pressure in the first cavity and the air pressure in the external space of the first shell are more effectively maintained in a balanced state, thereby further improving the performance of the rotor.

[0099] In some embodiments of the present application, the number of stators is two, and the rotor is disposed between the two stators.

[0100] By adopting the above technical solution, the performance of the dual-stator single-rotor motor is effectively improved.

[0101] An embodiment of the present application also provides an electric drive device, comprising the axial flux motor described in any one of the above embodiments.

[0102] The electric drive device provided in the embodiment of the present application has at least the following beneficial effects: the electric drive device provided in the embodiment of the present application adopts the above-mentioned axial flux motor, thereby effectively improving the performance of the electric drive device.

[0103] An embodiment of the present application also provides an electric drive system, including a battery and the above-mentioned electric drive device, wherein the battery is electrically connected to the electric drive device.

[0104] The electric drive system provided by the embodiment of the present application has at least the following beneficial effects: the electric drive system provided by the embodiment of the present application adopts the above-mentioned electric drive device, thereby effectively improving the performance of the electric drive system.

[0105] An embodiment of the present application also provides an electric device, comprising the above-mentioned electric drive system.

[0106] The electric device provided by the embodiment of the present application has at least the following beneficial effects: the electric device provided by the embodiment of the present application adopts the above-mentioned electric drive system, thereby effectively improving the performance of the electric device. BRIEF DESCRIPTION OF THE DRAWINGS

[0107] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0108] Figure 1 A schematic diagram of the structure of a vehicle provided in an embodiment of the present application;

[0109] Figure 2 A schematic diagram of the explosion structure of a battery provided in an embodiment of the present application;

[0110] Figure 3 A schematic diagram of the structure of an electric drive device provided in an embodiment of the present application;

[0111] Figure 4 for Figure 3 The front structural schematic diagram of the electric drive device shown;

[0112] Figure 5 for Figure 4 The cross-sectional structure of the axial flux motor in the electric drive device shown in the figure is shown along the AA line. Figure 1 ;

[0113] Figure 6 for Figure 4 The cross-sectional structure of the axial flux motor in the electric drive device shown in the figure is shown along the AA line. Figure 2 ;

[0114] Figure 7 A schematic diagram of the structure of the stator body provided in an embodiment of the present application;

[0115] Figure 8 for Figure 7 A schematic diagram of the structure of the slot wedge in the stator body shown;

[0116] Fig. 9 Schematic diagram of the connection structure between the stator body and the separator provided in the embodiment of the present application Figure 1 ;

[0117] Fig.10 Schematic diagram of the connection structure between the stator body and the separator provided in the embodiment of the present application Figure 2 ;

[0118] Fig.11 Schematic diagram of the connection structure between the stator body and the separator provided in the embodiment of the present application Figure 3 ;

[0119] Fig.12 Schematic diagram of the connection structure between the stator body and the separator provided in the embodiment of the present application Figure 4 ;

[0120] Fig.13 Schematic diagram of the connection structure between the stator body and the separator provided in the embodiment of the present application Figure 5 ;

[0121] Fig.14 Schematic diagram of the connection structure between the second shell and the partition provided in the embodiment of the present application Figure 1 ;

[0122] Fig.15 Schematic diagram of the connection structure between the second shell and the partition provided in the embodiment of the present application Figure 2 ;

[0123] Fig.16 Schematic diagram of the connection structure between the second shell and the partition provided in the embodiment of the present application Figure 3 ;

[0124] Fig.17 Schematic diagram of the connection structure between the second shell and the partition provided in the embodiment of the present application Figure 4 ;

[0125] Fig.18 Schematic diagram of the connection structure between the second shell and the partition provided in the embodiment of the present application Figure 5 ;

[0126] Fig.19 The main structure diagram of the stator provided in the embodiment of the present application is shown in FIG. Figure 1 ;

[0127] Fig. 20 The main structure diagram of the stator provided in the embodiment of the present application is shown in FIG. Figure 2 .

[0128] Among them, the reference numerals in the figure are:

[0129] 1000. Vehicles;

[0130] 100. Electric drive device;

[0131] 10. Axial flux motor; 11. Housing; 111. Second outer ring wall; 112. Second inner ring wall; 113. Third cooling interface; 114. Fourth cooling interface; 12. Rotor; 121. First housing; 1211. First cavity; 1212. Through hole; 122. Rotor body; 123. Rotating shaft; 13. Stator; 131. Second housing; 1311. Framework; 13111. First support portion; 13112. Seventh connection portion; 13113. Second support portion; 13114. Eighth connection portion; 13115. Second frame; 13116, third frame; 13117, gap; 1312, first insulator; 1313, second insulator; 1314, second cavity; 1315, first cooling interface; 1316, second cooling interface; 1317, first outer ring wall; 13171, third connection part; 13172, fourth connection hole; 13173, fourth connection groove; 13174, third connection surface; 1318, first inner ring wall; 13181, fifth connection part; 13182, sixth connection hole; 13183, sixth connection groove; 13184 , fifth connection surface; 132, separator; 1321, first connection hole; 1322, first connection groove; 1323, second connection part; 1324, second connection surface; 1325a, third connection hole; 1325b, fifth connection hole; 1326a, third connection groove; 1326b, fifth connection groove; 1327a, fourth connection part; 1327b, sixth connection part; 1328a, fourth connection surface; 1328b, sixth connection surface; 133, stator body; 1331, core; 1332, slot wedge; 13321, Insertion part; 13322, first connection part; 13323, second connection hole; 13324, second connection groove; 13325, first connection surface; 13326, limit part; 13327, avoidance; 13328, chamfer structure; 1333, winding groove; 13331, first groove wall; 13332, second groove wall; 13333, first clamping groove; 13334, second clamping groove; 13335, notch; 1334, base; 1335, shaft cavity; 14, sealing assembly; 141, first sealing member; 142, second sealing member;

[0132] 20. Speed ​​changing mechanism;

[0133] 30. Controller;

[0134] 200. Battery;

[0135] 210, battery box; 211, first box body; 212, second box body;

[0136] 220. Battery cell. DETAILED DESCRIPTION

[0137] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0138] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0139] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0140] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0141] The motor is a power device of an electric device. The motor is used to convert electrical energy into mechanical energy to drive the electric device to operate. Among them, the axial flux motor refers to a motor in which the magnetic flux direction is axial and the current-carrying conductor is placed radially. The axial flux motor usually includes a rotor and a stator. The rotor and the stator are roughly disc-shaped structures and are arranged along the axial direction of the axial flux motor. During the operation of the axial flux motor, the rotor rotates, while the stator is fixed. In order to reduce the risk of interference between the main part of the rotor and the main part of the stator and the risk of interference between the main part of the stator and other parts of the axial flux motor, a housing and a partition are usually provided on the stator. The partition is provided between the main part of the stator and the main part of the rotor to separate the main part of the stator from the main part of the rotor. The housing is used to accommodate the main part of the stator to separate the main part of the stator from other parts of the axial flux motor.

[0142] In the related art, in order to ensure the insulation performance of the axial flux motor, the stator separator is usually made of insulating material, for example, the stator separator is made of plastic. Therefore, the structural strength of the stator separator is poor. During the operation of the axial flux motor, the separator is easily deformed in the direction of the rotor under the action of other external forces. When the deformation amplitude of the separator is too large, the separator will contact the main part of the rotor, resulting in interference between the separator and the main part of the rotor, especially when the rotor rotates at high speed, which is easy to cause damage to the inside of the axial flux motor. In addition, in actual applications, the stator shell is not effectively fixed, which makes the stator shell easy to shake during the operation of the axial flux motor, thereby causing interference between the stator shell and other parts of the motor, which is not conducive to improving the performance of the axial flux motor.

[0143] In order to reduce the risk of interference between the separator and the main part of the rotor and the risk of interference between the main part of the stator and other components of the axial flux motor, the axial flux motor provided in the embodiment of the present application is fixedly connected to the stator body by the second shell and the separator, and the stator body is fixedly connected to the outer shell, so that the position of the part where the separator is fixedly connected to the stator body is relatively fixed with the position of the rotor body, thereby effectively improving the deformation of the separator toward the rotor body, thereby effectively reducing the risk of interference between the separator and the rotor body, and at the same time, the stator body, the second shell and the outer shell can be relatively fixed, effectively improving the shaking of the second shell, thereby effectively reducing the risk of interference between the second shell and other components of the axial flux motor, which is beneficial to improving the performance of the axial flux motor.

[0144] The axial flux motor provided in the embodiment of the present application can be applied to electric equipment, which may be but is not limited to vehicles, ships, airplanes, spacecraft, excavators, cranes, lifts, elevators, etc., and is not specifically limited here.

[0145] For the convenience of description, the following embodiments are described by taking the electric device of one embodiment of the present application as a vehicle as an example.

[0146] See also Figure 1 , Figure 1 The schematic diagram of the structure of the vehicle 1000 provided in the embodiment of the present application. According to the power source, the vehicle 1000 can be a pure electric vehicle, a hybrid electric vehicle or an extended-range vehicle, etc. According to the driving mode, the vehicle 1000 can be a front-wheel drive vehicle, a rear-wheel drive vehicle or a four-wheel drive vehicle. The vehicle 1000 includes a vehicle body and an electric drive system.

[0147] The vehicle body is the main supporting component of the vehicle 1000, and the vehicle body has a cabin and a driving cabin, wherein the cabin is used to accommodate the power mechanism, electric control mechanism, transmission mechanism, etc. of the vehicle 1000, and the driving cabin is used to provide operating space and riding space for the driver and passengers. When the vehicle 1000 is a front-wheel drive vehicle, the cabin is arranged at the head of the vehicle body, that is, the cabin is the front cabin; when the vehicle 1000 is a rear-wheel drive vehicle, the cabin is arranged at the rear of the vehicle body, that is, the cabin is the rear cabin; when the vehicle 1000 is a four-wheel drive vehicle, the cabin is divided into a front cabin and a rear cabin, the front cabin is arranged at the head of the vehicle body, and the rear cabin is arranged at the rear of the vehicle body. The driving cabin is arranged between the head and the rear of the vehicle body.

[0148] The electric drive system is the power system of the vehicle 1000, and is used to convert electrical energy into mechanical energy and output the mechanical energy to the wheels of the vehicle 1000 to drive the vehicle 1000. The electric drive system is arranged on the vehicle body, specifically, a part of the electric drive system can be arranged in the cabin, and another part of the electric drive system can be arranged at the bottom of the vehicle body.

[0149] See also Figure 1 , the electric drive system provided in the embodiment of the present application includes a battery 200 and an electric drive device 100 .

[0150] The battery 200 is used to provide electric energy for the electric drive device 100. The battery 200 can be arranged at the bottom, head or tail of the vehicle 1000. Figure 2 , Figure 2 Schematic diagram of an explosion of a battery 200 provided in an embodiment of the present application. The battery 200 includes a battery box 210 and a battery cell 220, and the battery cell 220 is accommodated in the battery box 210. Among them, the battery box 210 is used to provide a storage space for the battery cell 220, and the battery box 210 can adopt a variety of structures. In some embodiments, the battery box 210 may include a first box body 211 and a second box body 212, and the first box body 211 and the second box body 212 cover each other, and the first box body 211 and the second box body 212 jointly define a storage space for accommodating the battery cell 220. The second box body 212 may be a hollow structure with one end open, the first box body 211 may be a plate-like structure, and the first box body 211 is covered on the open side of the second box body 212, so that the first box body 211 and the second box body 212 jointly define a storage space; the first box body 211 and the second box body 212 may also be hollow structures with one side open, and the open side cover of the first box body 211 is covered on the open side of the second box body 212. Of course, the battery box 210 formed by the first box body 211 and the second box body 212 may be in various shapes, such as a cylinder, a cuboid, etc.

[0151] In some embodiments, the battery box 210 may be a part of the chassis structure of the vehicle 1000. For example, a portion of the battery box 210 may become at least a portion of the floor of the vehicle 1000, or a portion of the battery box 210 may become at least a portion of the cross beam and longitudinal beam of the vehicle 1000.

[0152] Of course, in some embodiments, the battery 200 may not include the battery box 210 , but rather a plurality of battery cells 220 may be electrically connected and assembled into the vehicle 1000 after being formed into a whole through necessary fixing structures.

[0153] In the battery 200, there may be a plurality of battery cells 220, and the plurality of battery cells 220 may be connected in series, in parallel, or in a hybrid connection. A hybrid connection means that the plurality of battery cells 220 are both connected in series and in parallel. The plurality of battery cells 220 may be directly connected in series, in parallel, or in a hybrid connection, and then the whole formed by the plurality of battery cells 220 is accommodated in the battery box 210. Of course, the battery 200 may also be a battery module formed by first connecting the plurality of battery cells 220 in series, in parallel, or in a hybrid connection, and then the plurality of battery modules are connected in series, in parallel, or in a hybrid connection to form a whole, and then accommodated in the battery box 210. The battery 200 may also include other functional components, for example, the battery 200 may also include a busbar for realizing electrical connection between the plurality of battery cells 220.

[0154] Each battery cell 220 may be a secondary battery or a primary battery, wherein a secondary battery refers to a battery cell 220 that can be used continuously by activating active materials by charging after the battery cell 220 is discharged, and a primary battery refers to a battery cell 220 that cannot be used continuously by activating active materials by charging after the power of the battery cell 220 is exhausted; the battery cell 220 may also be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead storage battery, etc., but is not limited thereto. The battery cell 220 may be a cylindrical battery cell, a prismatic battery cell, a soft pack battery cell, or a battery cell 220 of other shapes, wherein the prismatic battery cell includes a square shell battery cell, a blade-shaped battery cell, and a multi-prismatic battery cell, wherein the multi-prismatic battery cell is, for example, a hexagonal battery cell, etc., and the present application has no particular limitation.

[0155] The electric drive device 100 is used to convert the electric energy provided by the battery 200 into mechanical energy and output the mechanical energy to the wheels of the vehicle 1000 to drive the vehicle 1000 to travel. The electric drive device 100 is installed in the engine compartment. Specifically, when the vehicle 1000 is a front-wheel drive vehicle, the electric drive device 100 is installed in the front engine compartment and is used to output the above-mentioned mechanical energy to the front wheels of the vehicle 1000 to drive the vehicle 1000 to travel; when the vehicle 1000 is a rear-wheel drive vehicle, the electric drive device 100 is installed in the rear engine compartment and is used to output the above-mentioned mechanical energy to the rear wheels of the vehicle 1000 to drive the vehicle 1000 to travel; when the vehicle 1000 is a four-wheel drive vehicle, there are two electric drive devices 100, one electric drive device 100 is installed in the front engine compartment and is used to output the above-mentioned mechanical energy to the front wheels of the vehicle 1000, and the other electric drive device 100 is installed in the rear engine compartment and is used to output the above-mentioned mechanical energy to the rear wheels of the vehicle 1000 to drive the vehicle 1000 to travel.

[0156] Please also read Figure 3 and Figure 4 The electric drive device 100 includes an axial flux motor 10, which is the main power output component of the electric drive device 100 and is used to convert the electric energy provided by the battery 200 into mechanical energy. The electric drive device 100 may also include a speed change mechanism 20, which is the power transmission mechanism of the electric drive device 100. The speed change mechanism 20 has a power input end and a power output end. The power input end of the speed change mechanism 20 is connected to the rotating shaft 123 of the axial flux motor 10, and the power output end of the speed change mechanism 20 is connected to the wheels of the vehicle 1000, so as to transfer the above mechanical energy to the wheels of the vehicle 1000 by changing the speed and torque of the motor. The electric drive device 100 may also include a controller 30, which is used to convert the direct current output by the battery 200 into alternating current and transmit the alternating current to the motor, and is also used to control the operation of the motor, for example, to control the start and stop, speed, torque, etc. of the motor.

[0157] The axial flux motor 10 provided in the embodiment of the present application is described below with reference to the accompanying drawings.

[0158] First, please also refer to Figure 5 and Figure 6The embodiment of the present application provides an axial flux motor 10, including a housing 11, a rotor 12 and a stator 13. The rotor 12 is accommodated in the housing 11, and the rotor 12 includes a first housing 121 and a rotor body 122. The first housing 121 has a first cavity 1211 for accommodating the rotor body 122. The stator 13 is accommodated in the housing 11, and the stator 13 includes a second housing 131, a partition 132 and a stator body 133. The second housing 131 has a second cavity 1314 for accommodating the stator body 133. The partition 132 is arranged between the first housing 121 and the second housing 131 to separate the first cavity 1211 and the second cavity 1314. The second housing 131 and the partition 132 are fixedly connected to the stator body 133, and the stator body 133 is fixedly connected to the housing 11.

[0159] The housing 11 is used to provide an installation environment for the stator 13 and the rotor 12, and is also used as a supporting component for the axial flux motor 10. Optionally, the housing 11 may be an integrally formed component, or may be an assembled component assembled from a plurality of parts. The material of the housing 11 may be, but is not limited to, copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not specifically limited herein. In some embodiments, when the housing 11 includes a plurality of parts, some parts of the housing 11 may be made of metals such as copper, iron, aluminum, stainless steel, aluminum alloy, etc., and other parts of the housing 11 may be made of plastic, which is not specifically limited herein.

[0160] The rotor 12 is the rotating part of the axial flux motor 10. The first housing 121 is used to provide an installation environment for the rotor body 122 and other components of the rotor 12. The first housing 121 can be an integrally formed component or an assembled component assembled from multiple parts. The material of the first housing 121 can be, but is not limited to, copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and is not specifically limited here.

[0161] The rotor body 122 is the main part of the rotor 12. The rotor body 122 may include a rotor 12 bracket and a plurality of magnets, the plurality of magnets being mounted on the rotor 12 bracket, and the rotor 12 may further include a rotating shaft 123, the rotating shaft 123 being a component for outputting rotational mechanical energy, the rotor 12 bracket being fixedly connected to the rotating shaft 123, and a plurality of magnet rings being arranged on the rotating shaft 123.

[0162] The stator 13 is a fixed part of the axial flux motor 10. Among them, the second shell 131 is used to provide an installation environment for the stator body 133 and other components of the stator 13. The second shell 131 can be an integrally molded component, or it can be an assembled component assembled from multiple parts. The second shell 131 can be made entirely of insulating materials, or it can be made of a composite of insulating materials and metal materials. For example, the inner layer structure of the second shell 131 is made of metal material, and the surface structure of the second shell 131 is made of insulating material. In other words, the insulating material is coated with the metal material, wherein the insulating material can be but not limited to rubber, plastic, ceramic, glass, etc., and the metal material can be but not limited to copper, iron, aluminum, stainless steel, aluminum alloy, etc., and is not specifically limited here.

[0163] The separator 132 is a component used to separate the first cavity 1211 of the first housing 121 from the second cavity 1314 of the second housing 131. The stator 13 and the rotor 12 are separated to form an air gap, and the separator 132 is arranged in the air gap. It can be understood that the separation of the first cavity 1211 and the second cavity 1314 means that the components arranged in the second cavity 1314 cannot directly enter the first cavity 1211. For example, when the second cavity 1314 contains a cooling medium, the cooling medium cannot directly enter the first cavity 1211. Similarly, the components arranged in the first cavity 1211 cannot directly enter the second cavity 1314. In this embodiment, the separator 132 is generally in a plate-like structure and intersects the central axis of the axial flux motor 10. For example, the separator 132 is perpendicular to the central axis of the axial flux motor 10. In order to reduce the magnetic resistance between the stator 13 and the rotor 12, the separator 132 is made of non-magnetic material. The non-magnetic conductive material may be, but is not limited to, plastic, rubber, glass, ceramic, etc., and is not specifically limited here.

[0164] The stator body 133 is a main body portion of the stator 13. The stator body 133 is magnetically coupled to the rotor body 122 to drive the rotor body 122 to rotate.

[0165] The second housing 131 and the stator body 133 are fixedly connected, which means that the second housing 131 and the stator body 133 are relatively fixed after being fixedly connected, that is, the second housing 131 and the stator body 133 are in a relatively static state. Optionally, the second housing 131 and the stator body 133 can be fixedly connected by, but not limited to, welding, bonding, riveting, etc., which are not specifically limited here.

[0166] The separator 132 is fixedly connected to the stator body 133, which means that the portion of the separator 132 fixedly connected to the stator body 133 is relatively fixed to the stator body 133, that is, the portion of the separator 132 fixedly connected to the stator body 133 is in a relatively static state with the stator body 133. Optionally, the separator 132 and the stator body 133 may be fixedly connected by, but not limited to, welding, bonding, riveting, etc., which are not specifically limited here.

[0167] The stator body 133 is fixedly connected to the housing 11, which means that the stator body 133 is relatively fixed to the housing 11 after being fixedly connected, that is, the stator body 133 and the housing 11 are in a relatively static state. Optionally, the stator body 133 and the housing 11 can be fixedly connected by, but not limited to, welding, bonding, riveting, etc., which are not specifically limited here.

[0168] The axial flux motor 10 provided in the embodiment of the present application is achieved by fixedly connecting the second shell 131 and the partition 132 to the stator body 133, and fixing the stator body 133 to the outer shell 11, so that the position of the part where the partition 132 is fixedly connected to the stator body 133 is relatively fixed with the position of the rotor body 122, effectively improving the deformation of the partition 132 toward the rotor body 122, thereby effectively reducing the risk of interference between the partition 132 and the rotor body 122, and at the same time enabling the stator body 133, the second shell 131 and the outer shell 11 to be relatively fixed, effectively improving the shaking of the second shell 131, thereby effectively reducing the risk of interference between the second shell 131 and other components of the axial flux motor 10, which is beneficial to improving the performance of the axial flux motor 10.

[0169] In some embodiments of this application, please refer to Figures 5 to 7 The stator body 133 also includes a plurality of iron cores 1331 and a plurality of slot wedges 1332 . A winding slot 1333 is formed between two adjacent iron cores 1331 . The slot wedges 1332 are inserted into the winding slot 1333 and fixedly connected to the separator 132 .

[0170] The stator body 133 may also include a winding, which is wound in the winding slot 1333, and the iron core 1331 and the winding together constitute the magnetic circuit of the axial flux motor 10. When the winding is energized, the winding generates an electromagnetic field, which is coupled with the magnetic field of the magnetic steel to drive the rotor body 122 to rotate. In some embodiments, the stator body 133 also includes a base 1334, and a plurality of iron cores 1331 are arranged on the base 1334 and are arranged around the rotating shaft 123 of the rotor 12. A shaft cavity 1335 may be opened in the middle of the base 1334, and the rotating shaft 123 of the rotor 12 is passed through the shaft cavity 1335. The winding slot 1333 has a notch 13335, and the winding is placed in the winding slot 1333 through the notch 13335, and the notch 13335 is arranged opposite to the partition 132. In some embodiments, the core 1331 may be an assembled component assembled from multiple parts, for example, the core 1331 is formed by stacking multiple punching sheets in sequence. In other embodiments, the core 1331 may also be an integrally formed component, for example, the core 1331 is integrally formed by a casting process.

[0171] The slot wedge 1332 is a component for fixing the winding. When the winding operation of the winding is completed, the slot wedge 1332 is inserted into the winding groove 1333 to block the notch 13335 of the winding groove 1333, thereby fixing the winding in the winding groove 1333. The slot wedge 1332 can be an integrally formed component, or an assembled component assembled from multiple parts, which is not specifically limited here. In this embodiment, the slot wedge 1332 also serves to insulate the core 1331 from the winding, that is, the slot wedge 1332 is made of insulating material. In order to improve the connection strength between the slot wedge 1332 and the separator 132, the material of the slot wedge 1332 is the same as that of the separator 132. For example, the material of the separator 132 is plastic, and accordingly, the material of the slot wedge 1332 is also plastic.

[0172] In some embodiments, see Figure 8The slot wedge 1332 includes a plug-in portion 13321 and a limiting portion 13326. The plug-in portion 13321 is plugged into the winding groove 1333. The limiting portion 13326 is connected to one end of the plug-in portion 13321 and abuts against two adjacent cores 1331. The plug-in portion 13321 is the main body of the slot wedge 1332. The plug-in portion 13321 is plugged into the winding groove 1333 to block the notch 13335 of the winding groove 1333, thereby fixing the winding in the winding groove 1333. The limiting portion 13326 is a component used to limit the depth position of the plug-in portion 13321 inserted into the winding groove 1333. In this way, the position of the slot wedge 1332 in the winding groove 1333 can be limited, thereby effectively reducing the risk of the slot wedge 1332 escaping from the winding groove 1333. The connection between the plug-in portion 13321 and the limiting portion 13326 is provided with an escape opening 13327. The escape opening 13327 can escape the iron core 1331, thereby effectively improving the mutual interference between the slot wedge 1332 and the iron core 1331. In order to facilitate the insertion of the slot wedge 1332 into the winding slot 1333, a chamfered structure 13328 is provided at the insertion end of the plug-in portion 13321.

[0173] In some embodiments, please refer to Figures 9 to 13 The winding groove 1333 has a first groove wall 13331 and a second groove wall 13332 which are arranged opposite to each other. The first groove wall 13331 has a first slot 13333, and the second groove wall 13332 has a second slot 13334 which is opposite to the first slot 13333. One side of the plug-in portion 13321 is plugged into the first slot 13333, and the other side of the plug-in portion 13321 is plugged into the second slot 13334. In this way, the position of the slot wedge 1332 in the winding groove 1333 can be further limited, thereby further reducing the risk of the slot wedge 1332 being separated from the winding groove 1333.

[0174] By adopting the above technical solution, a slot wedge 1332 of corresponding material can be selected according to the material of the partition 132, so that the material of the slot wedge 1332 is the same as the material of the partition 132, or the material type of the slot wedge 1332 is the same as the material type of the partition 132, thereby effectively improving the connection strength between the slot wedge 1332 and the partition 132.

[0175] In some embodiments of this application, please refer to Fig. 9 and Fig.10 The slot wedge 1332 also includes a first connecting portion 13322 , which is disposed on a side of the plug-in portion 13321 facing the partition 132 , and the first connecting portion 13322 extends out of the winding slot 1333 and is fixedly connected to the partition 132 .

[0176] At least a portion of the plug-in portion 13321 is disposed opposite to the partition 132 via the notch 13335 of the winding groove 1333 . The first connection portion 13322 is disposed at a portion where the plug-in portion 13321 and the partition 132 are disposed opposite to each other and is located on a side of the plug-in portion 13321 facing the partition 132 .

[0177] The first connection part 13322 is a component for connecting the partition 132. One end of the first connection part 13322 is connected to the plug-in part 13321, and the other end of the first connection part 13322 extends out of the winding groove 1333 through the notch 13335 of the winding groove 1333 and is connected to the partition 132. The number of the first connection part 13322 can be one or more. In this embodiment, in order to further improve the connection strength between the slot wedge 1332 and the partition 132, the number of the first connection parts 13322 is more than one, and the multiple first connection parts 13322 are distributed along the length direction of the plug-in part 13321.

[0178] By adopting the above technical solution, the connection stress between the slot wedge 1332 and the partition 132 is effectively reduced, thereby effectively improving the connection stability between the slot wedge 1332 and the partition 132.

[0179] In some embodiments of this application, please refer to Fig. 9 The partition 132 defines a first connection hole 1321 , and the first connection portion 13322 is fixedly connected in the first connection hole 1321 .

[0180] The first connection hole 1321 is a structure that penetrates the partition 132. The first connection portion 13322 is connected to the first connection hole 1321, that is, at least a portion of the first connection portion 13322 is disposed in the first connection hole 1321. The first connection portion 13322 may pass through the first connection hole 1321 or may not pass through the first connection hole 1321, which is not specifically limited herein. The shape of the first connection portion 13322 is adapted to the shape of the first connection hole 1321. For example, the first connection portion 13322 is a cylindrical structure, and the first connection hole 1321 is also a cylindrical structure. For another example, the first connection portion 13322 is a prismatic structure, and the first connection hole 1321 is also a prismatic structure.

[0181] In other embodiments of the present application, please refer to Fig.10 The partition 132 defines a first connection groove 1322 , and the first connection portion 13322 is fixedly connected in the first connection groove 1322 .

[0182] The first connection groove 1322 is a structure recessed on the side of the partition 132 facing the slot wedge 1332. The first connection portion 13322 is connected to the first connection groove 1322, that is, at least a portion of the first connection portion 13322 is disposed in the first connection groove 1322. The shape of the first connection portion 13322 matches the shape of the first connection groove 1322. For example, if the first connection portion 13322 is a cylindrical structure, the first connection groove 1322 is also a cylindrical structure. For another example, if the first connection portion 13322 is a prismatic structure, the first connection groove 1322 is also a prismatic structure.

[0183] By adopting the above technical solution, the connection area between the slot wedge 1332 and the partition 132 is effectively increased, thereby further improving the connection strength between the slot wedge 1332 and the partition 132.

[0184] In some embodiments of this application, please refer to Fig.11 and Fig.12 A second connecting portion 1323 is provided on one side of the separator 132 facing the stator body 133 . The second connecting portion 1323 extends into the winding slot 1333 and is fixedly connected to the slot wedge 1332 .

[0185] The second connection part 1323 is a component for connecting the slot wedge 1332. At least part of the partition 132 is arranged opposite to the slot wedge 1332 via the notch 13335 of the winding slot 1333. The second connection part 1323 is arranged at the position where the partition 132 and the slot wedge 1332 are arranged opposite to each other and is located on the side of the partition 132 facing the slot wedge 1332. One end of the second connection part 1323 is connected to the side of the partition 132 facing the stator body 133, and the other end of the second connection part 1323 extends into the winding slot 1333 via the notch 13335 of the winding slot 1333 and is connected to the slot wedge 1332. The number of the second connection part 1323 can be one or more. In this embodiment, in order to further improve the connection strength between the slot wedge 1332 and the partition 132, the number of the second connection part 1323 is more than one, and the more than one second connection part 1323 is distributed along the length direction of the slot wedge 1332.

[0186] By adopting the above technical solution, the connection stress between the slot wedge 1332 and the partition 132 is effectively reduced, thereby effectively improving the connection stability between the slot wedge 1332 and the partition 132.

[0187] In some embodiments of this application, please refer to Fig.11 The plug-in portion 13321 defines a second connection hole 13323 , and the second connection portion 1323 is fixedly connected in the second connection hole 13323 .

[0188] The second connection hole 13323 is a structure that penetrates the plug-in portion 13321. The second connection portion 1323 is connected to the second connection hole 13323, that is, at least a portion of the second connection portion 1323 is disposed in the second connection hole 13323. The second connection portion 1323 may pass through the second connection hole 13323 or may not pass through the second connection hole 13323, which is not specifically limited herein. The shape of the second connection portion 1323 is adapted to the shape of the second connection hole 13323. For example, the second connection portion 1323 is a cylindrical structure, and the second connection hole 13323 is also a cylindrical structure. For another example, the second connection portion 1323 is a prismatic structure, and the second connection hole 13323 is also a prismatic structure.

[0189] In other embodiments of the present application, please refer to Fig.12 The plug-in portion 13321 defines a second connection groove 13324 , and the second connection portion 1323 is fixedly connected in the second connection groove 13324 .

[0190] The second connection groove 13324 is a structure recessed on the side of the plug-in portion 13321 facing the partition 132. The second connection portion 1323 is connected to the second connection groove 13324, that is, at least a portion of the second connection portion 1323 is disposed in the second connection groove 13324. The shape of the second connection portion 1323 matches the shape of the second connection groove 13324. For example, the second connection portion 1323 is a cylindrical structure, and the second connection groove 13324 is also a cylindrical structure. For another example, the second connection portion 1323 is a prismatic structure, and the second connection groove 13324 is also a prismatic structure.

[0191] By adopting the above technical solution, the connection area between the slot wedge 1332 and the partition 132 is effectively increased, thereby further improving the connection strength between the slot wedge 1332 and the partition 132.

[0192] In some embodiments of this application, please refer to Fig.13 The plug-in portion 13321 has a first connection surface 13325 on a side facing the partition 132 , and the partition 132 has a second connection surface 1324 on a side facing the stator body 133 , and the first connection surface 13325 is fixedly connected to the second connection surface 1324 .

[0193] It can be understood that the first connecting surface 13325 is arranged on the side of the plug-in portion 13321 facing the partition 132, and the second connecting surface 1324 is arranged on the side of the partition 132 facing the slot wedge 1332, and the first connecting surface 13325 and the second connecting surface 1324 are attached to each other and connected together.

[0194] In some embodiments, the first connecting surface 13325 is a plane, and the second connecting surface 1324 is also a plane, and the first connecting surface 13325 and the second connecting surface 1324 are attached to each other and connected together.

[0195] In other embodiments, the first connecting surface 13325 is a curved surface, and the second connecting surface 1324 is also a curved surface, and the shape of the first connecting surface 13325 is adapted to the shape of the second connecting surface 1324 so that the first connecting surface 13325 and the second connecting surface 1324 can be attached to each other and connected together.

[0196] By adopting the above technical solution, the connection area between the slot wedge 1332 and the partition 132 is effectively increased, thereby further improving the connection strength between the slot wedge 1332 and the partition 132.

[0197] In some embodiments of the present application, the slot wedge 1332 is heat-riveted, welded, or bonded to the partition 132 .

[0198] In some embodiments, the slot wedge 1332 includes a plug-in portion 13321 and a first connection portion 13322. The plug-in portion 13321 is plugged into the winding groove 1333. The first connection portion 13322 is arranged on the side of the plug-in portion 13321 facing the partition 132. The partition 132 is provided with a first connection hole 1321. The first connection portion 13322 extends out of the winding groove 1333 and passes through the first connection hole 1321. The end of the first connection portion 13322 away from the plug-in portion 13321 is heated so that the first connection portion 13322 is hot-riveted to the first connection hole 1321.

[0199] In other embodiments, the slot wedge 1332 includes an insert portion 13321 and a first connecting portion 13322. The insert portion 13321 is inserted into the winding groove 1333. The first connecting portion 13322 is arranged on the side of the insert portion 13321 facing the partition 132. The partition 132 is provided with a first connecting groove 1322. The first connecting portion 13322 extends out of the winding groove 1333 and is bonded to the first connecting groove 1322.

[0200] In some other embodiments, the slot wedge 1332 includes an insert portion 13321, a first connecting surface 13325 is provided on the side of the insert portion 13321 facing the partition 132, a second connecting surface 1324 is provided on the side of the partition 132 facing the stator body 133, and the first connecting surface 13325 and the second connecting surface 1324 are welded to each other, or the first connecting surface 13325 and the second connecting surface 1324 are bonded to each other.

[0201] By adopting the above technical solution, the slot wedge 1332 and the partition 132 are effectively connected.

[0202] In some embodiments of this application, please refer to Figures 14 to 18 The second housing 131 has a first outer ring wall 1317 arranged on the outer peripheral side of the stator body 133 , and the end side of the first outer ring wall 1317 facing the partition 132 is fixedly connected to the partition 132 .

[0203] The first outer annular wall 1317 is a part of the wall of the second housing 131, and the first outer annular wall 1317 and other walls of the second housing 131 are enclosed to form the second cavity 1314. The first outer annular wall 1317 is arranged on the outer peripheral side of the stator body 133, which means that the stator body 133 is arranged in the inner annular space of the first outer annular wall 1317, and the inner annular space of the first outer annular wall 1317 can be the whole space of the second cavity 1314, and can also be a part of the space of the second cavity 1314.

[0204] The end side of the first outer annular wall 1317 facing the partition 132 refers to: the side of the first outer annular wall 1317 facing the partition 132 along the axial direction of the axial flux motor 10. The end side of the first outer annular wall 1317 facing the partition 132 is fixedly connected to the partition 132, which means: the part of the partition 132 fixedly connected to the first outer annular wall 1317 is relatively fixed to the second shell 131, that is, the part of the partition 132 fixedly connected to the first outer annular wall 1317 is in a relatively static state with the second shell 131. Optionally, the first outer annular wall 1317 and the partition 132 can be fixedly connected by, but not limited to, welding, bonding, riveting, etc., which is not specifically limited here.

[0205] By adopting the above technical solution, the position of the part where the separator 132 is fixedly connected to the first outer ring wall 1317 is relatively fixed with the position of the rotor body 122, which further improves the deformation of the separator 132 toward the rotor body 122, thereby further reducing the risk of interference between the separator 132 and the rotor body 122.

[0206] In some embodiments of this application, please refer to Fig.14 and Fig.15 A third connecting portion 13171 is provided on the end side of the first outer ring wall 1317 facing the partition 132 , and the third connecting portion 13171 is fixedly connected to the partition 132 .

[0207] The third connection portion 13171 is a component for connecting the partition 132. One end of the third connection portion 13171 is connected to the end side of the first outer annular wall 1317 facing the partition 132, and the other end of the third connection portion 13171 is connected to the partition 132. The number of the third connection portion 13171 can be one or more. In this embodiment, in order to improve the connection strength between the first outer annular wall 1317 and the partition 132, the number of the third connection portion 13171 is more than one, and the multiple third connection portions 13171 are distributed along the circumference of the first outer annular wall 1317.

[0208] By adopting the above technical solution, it is convenient to fix the first outer ring wall 1317 and the partition 132 together.

[0209] In some embodiments of this application, please refer to Fig.14 The partition 132 defines a third connection hole 1325 a , and the third connection portion 13171 is fixedly connected in the third connection hole 1325 a .

[0210] The third connection hole 1325a is a structure that penetrates the partition 132. The third connection portion 13171 is connected to the third connection hole 1325a, that is, at least a portion of the third connection portion 13171 is disposed in the third connection hole 1325a. The third connection portion 13171 may pass through the third connection hole 1325a, or may not pass through the third connection hole 1325a, which is not specifically limited herein. The shape of the third connection portion 13171 is adapted to the shape of the third connection hole 1325a. For example, the third connection portion 13171 is a cylindrical structure, and the third connection hole 1325a is also a cylindrical structure. For another example, the third connection portion 13171 is a prismatic structure, and the third connection hole 1325a is also a prismatic structure.

[0211] In other embodiments of the present application, please refer to Fig.15 The partition 132 defines a third connection groove 1326a, and the third connection portion 13171 is fixedly connected in the third connection groove 1326a.

[0212] The third connection groove 1326a is a structure recessed on the side of the partition 132 facing the first outer ring wall 1317. The third connection portion 13171 is connected to the third connection groove 1326a, that is, at least part of the third connection portion 13171 is disposed in the third connection groove 1326a. The shape of the third connection portion 13171 is adapted to the shape of the third connection groove 1326a. For example, the third connection portion 13171 is a cylindrical structure, and the third connection groove 1326a is also a cylindrical structure. For another example, the third connection portion 13171 is a prismatic structure, and the third connection groove 1326a is also a prismatic structure.

[0213] By adopting the above technical solution, the connection area between the first outer annular wall 1317 and the partition 132 is effectively increased, thereby further improving the connection strength between the first outer annular wall 1317 and the partition 132.

[0214] In some embodiments of this application, please refer to Fig.16 and Fig.17 A fourth connection portion 1327 a is provided on one side of the separator 132 facing the stator body 133 , and the fourth connection portion 1327 a is fixedly connected to the end side of the first outer ring wall 1317 facing the separator 132 .

[0215] The fourth connection portion 1327a is a component for connecting the first outer annular wall 1317. The fourth connection portion 1327a is disposed at a portion of the partition 132 that is disposed opposite to the first outer annular wall 1317 and is located on a side of the partition 132 that faces the first outer annular wall 1317. One end of the fourth connection portion 1327a is connected to the side of the partition 132 that faces the first outer annular wall 1317, and the other end of the fourth connection portion 1327a is connected to the end side of the first outer annular wall 1317 that faces the partition 132. The number of the fourth connection portion 1327a can be one or more. In the present embodiment, in order to further improve the connection strength between the first outer annular wall 1317 and the partition 132, the number of the fourth connection portion 1327a is more than one, and the plurality of fourth connection portions 1327a are distributed along the circumference of the first outer annular wall 1317.

[0216] By adopting the above technical solution, it is convenient to fix the first outer ring wall 1317 and the partition 132 together.

[0217] In some embodiments of this application, please refer to Fig.16 A fourth connection hole 13172 is formed on the end side of the first outer ring wall 1317 facing the partition 132 , and the fourth connection portion 1327 a is fixedly connected in the fourth connection hole 13172 .

[0218] The fourth connection hole 13172 is a structure that penetrates the end side of the first outer ring wall 1317 facing the partition 132. The fourth connection portion 1327a is connected to the fourth connection hole 13172, that is, at least part of the fourth connection portion 1327a is arranged in the fourth connection hole 13172. The fourth connection portion 1327a may pass through the fourth connection hole 13172 or may not pass through the fourth connection hole 13172, which is not specifically limited here. The shape of the fourth connection portion 1327a is adapted to the shape of the fourth connection hole 13172. For example, the fourth connection portion 1327a is a cylindrical structure, and the fourth connection hole 13172 is also a cylindrical structure. For another example, the fourth connection portion 1327a is a prismatic structure, and the fourth connection hole 13172 is also a prismatic structure.

[0219] In other embodiments of the present application, please refer to Fig.17 A fourth connecting groove 13173 is formed on the end side of the first outer ring wall 1317 facing the partition 132 , and the fourth connecting portion 1327 a is fixedly connected in the fourth connecting groove 13173 .

[0220] The fourth connection groove 13173 is a structure recessed on the end side of the first outer ring wall 1317 facing the partition 132. The fourth connection portion 1327a is connected to the fourth connection groove 13173, that is, at least part of the fourth connection portion 1327a is disposed in the fourth connection groove 13173. The shape of the fourth connection portion 1327a is adapted to the shape of the fourth connection groove 13173. For example, the fourth connection portion 1327a is a cylindrical structure, and the fourth connection groove 13173 is also a cylindrical structure. For another example, the fourth connection portion 1327a is a prismatic structure, and the fourth connection groove 13173 is also a prismatic structure.

[0221] By adopting the above technical solution, the connection area between the first outer annular wall 1317 and the partition 132 is effectively increased, thereby further improving the connection strength between the first outer annular wall 1317 and the partition 132.

[0222] In some embodiments of this application, please refer to Fig.18 The first outer ring wall 1317 has a third connecting surface 13174 on the end side facing the partition 132, and the partition 132 has a fourth connecting surface 1328a on the side facing the stator body 133, and the third connecting surface 13174 is fixedly connected to the fourth connecting surface 1328a.

[0223] It can be understood that the third connecting surface 13174 is arranged on the end side of the first outer ring wall 1317 facing the partition 132, and the fourth connecting surface 1328a is arranged on the side of the partition 132 facing the first outer ring wall 1317, and the third connecting surface 13174 and the fourth connecting surface 1328a are adhered to each other and connected together.

[0224] In some embodiments, the third connecting surface 13174 is a plane, and the fourth connecting surface 1328a is also a plane, and the third connecting surface 13174 and the fourth connecting surface 1328a are attached to each other and connected together.

[0225] In other embodiments, the third connecting surface 13174 is a curved surface, and the fourth connecting surface 1328a is also a curved surface, and the shape of the third connecting surface 13174 is adapted to the shape of the fourth connecting surface 1328a so that the third connecting surface 13174 and the fourth connecting surface 1328a can be attached to each other and connected together.

[0226] By adopting the above technical solution, the connection area between the first outer annular wall 1317 and the partition 132 is effectively increased, thereby further improving the connection strength between the first outer annular wall 1317 and the partition 132.

[0227] In some embodiments of this application, please refer to Figures 14 to 18 The second shell 131 also has a first inner ring wall 1318 arranged in the above-mentioned shaft cavity 1335. The first inner ring wall 1318 is arranged around the rotating shaft 123. The end side of the first inner ring wall 1318 facing the partition 132 is fixedly connected to the partition 132.

[0228] The first inner ring wall 1318 is another part of the wall of the second housing 131. The first inner ring wall 1318, the first outer ring wall 1317 and other walls of the second housing 131 together form the second cavity 1314. The first inner ring wall 1318 is disposed around the shaft 123, which means that the shaft 123 passes through the inner ring space of the first inner ring wall 1318.

[0229] The end side of the first inner ring wall 1318 facing the partition 132 refers to: the side of the first inner ring wall 1318 facing the partition 132 along the axial direction of the axial flux motor 10. The end side of the first inner ring wall 1318 facing the partition 132 is fixedly connected to the partition 132, which means: the part of the partition 132 fixedly connected to the first inner ring wall 1318 is relatively fixed to the second shell 131, that is, the part of the partition 132 fixedly connected to the first inner ring wall 1318 is in a relatively static state with the second shell 131. Optionally, the first inner ring wall 1318 and the partition 132 can be fixedly connected by, but not limited to, welding, bonding, riveting, etc., which is not specifically limited here.

[0230] By adopting the above technical solution, the position of the part where the separator 132 is fixedly connected to the first inner ring wall 1318 is relatively fixed with the position of the rotor body 122, which further improves the deformation of the separator 132 toward the rotor body 122, thereby further reducing the risk of interference between the separator 132 and the rotor body 122.

[0231] In some embodiments of this application, please refer to Fig.14 and Fig.15 A fifth connecting portion 13181 is provided on the end side of the first inner ring wall 1318 facing the partition 132 , and the fifth connecting portion 13181 is fixedly connected to the partition 132 .

[0232] The fifth connection portion 13181 is a component for connecting the partition 132. One end of the fifth connection portion 13181 is connected to the end side of the first inner annular wall 1318 facing the partition 132, and the other end of the fifth connection portion 13181 is connected to the partition 132. The number of the fifth connection portion 13181 can be one or more. In this embodiment, in order to improve the connection strength between the first inner annular wall 1318 and the partition 132, the number of the fifth connection portion 13181 is more than one, and the multiple fifth connection portions 13181 are distributed along the circumference of the first inner annular wall 1318.

[0233] By adopting the above technical solution, it is convenient to fix the first inner ring wall 1318 and the partition 132 together.

[0234] In some embodiments of this application, please refer to Fig.14 The partition 132 defines a fifth connection hole 1325b, and the fifth connection portion 13181 is fixedly connected in the fifth connection hole 1325b.

[0235] The fifth connection hole 1325b is a structure that penetrates the partition 132. The fifth connection portion 13181 is connected to the fifth connection hole 1325b, that is, at least a portion of the fifth connection portion 13181 is disposed in the fifth connection hole 1325b. The fifth connection portion 13181 may pass through the fifth connection hole 1325b or may not pass through the fifth connection hole 1325b, which is not specifically limited herein. The shape of the fifth connection portion 13181 is adapted to the shape of the fifth connection hole 1325b. For example, the fifth connection portion 13181 is a cylindrical structure, and the fifth connection hole 1325b is also a cylindrical structure. For another example, the fifth connection portion 13181 is a prismatic structure, and the fifth connection hole 1325b is also a prismatic structure.

[0236] In other embodiments of the present application, please refer to Fig.15 The partition 132 defines a fifth connecting groove 1326b, and the fifth connecting portion 13181 is fixedly connected in the fifth connecting groove 1326b.

[0237] The fifth connection groove 1326b is a structure recessed on the side of the partition 132 facing the first inner ring wall 1318. The fifth connection portion 13181 is connected to the fifth connection groove 1326b, that is, at least a portion of the fifth connection portion 13181 is disposed in the fifth connection groove 1326b. The shape of the fifth connection portion 13181 matches the shape of the fifth connection groove 1326b. For example, the fifth connection portion 13181 is a cylindrical structure, and the fifth connection groove 1326b is also a cylindrical structure. For another example, the fifth connection portion 13181 is a prismatic structure, and the fifth connection groove 1326b is also a prismatic structure.

[0238] By adopting the above technical solution, the connection area between the first inner annular wall 1318 and the partition 132 is effectively increased, thereby further improving the connection strength between the first inner annular wall 1318 and the partition 132.

[0239] In some embodiments of this application, please refer to Fig.16 and Fig.17 A sixth connection portion 1327 b is provided on one side of the separator 132 facing the stator body 133 , and the sixth connection portion 1327 b is fixedly connected to the end side of the first inner ring wall 1318 facing the separator 132 .

[0240] The sixth connection portion 1327b is a component for connecting the end side of the first inner annular wall 1318 facing the partition 132. One end of the sixth connection portion 1327b is connected to the side of the partition 132 facing the first inner annular wall 1318, and the other end of the sixth connection portion 1327b is connected to the end side of the first inner annular wall 1318 facing the partition 132. The number of the sixth connection portion 1327b can be one or more. In this embodiment, in order to improve the connection strength between the first inner annular wall 1318 and the partition 132, the number of the sixth connection portion 1327b is more than one, and the multiple sixth connection portions 1327b are distributed along the circumference of the first inner annular wall 1318.

[0241] By adopting the above technical solution, it is convenient to fix the first inner ring wall 1318 and the partition 132 together.

[0242] In some embodiments of this application, please refer to Fig.16 The first inner ring wall 1318 defines a sixth connecting hole 13182 , and the sixth connecting portion 1327 b is fixedly connected in the sixth connecting hole 13182 .

[0243] The sixth connection hole 13182 is a structure that penetrates the end side of the first inner ring wall 1318 facing the partition 132. The sixth connection portion 1327b is connected to the sixth connection hole 13182, that is, at least a portion of the sixth connection portion 1327b is disposed in the sixth connection hole 13182. The sixth connection portion 1327b may pass through the sixth connection hole 13182 or may not pass through the sixth connection hole 13182, which is not specifically limited herein. The shape of the sixth connection portion 1327b is adapted to the shape of the sixth connection hole 13182. For example, the sixth connection portion 1327b is a cylindrical structure, and the sixth connection hole 13182 is also a cylindrical structure. For another example, the sixth connection portion 1327b is a prismatic structure, and the sixth connection hole 13182 is also a prismatic structure.

[0244] In other embodiments of the present application, please refer to Fig.17A sixth connecting groove 13183 is formed on the end side of the first inner ring wall 1318 facing the partition 132 , and the sixth connecting portion 1327 b is fixedly connected in the sixth connecting groove 13183 .

[0245] The sixth connection groove 13183 is a structure recessed on the end side of the first inner ring wall 1318 facing the partition 132. The sixth connection portion 1327b is connected to the sixth connection groove 13183, that is, at least part of the sixth connection portion 1327b is disposed in the sixth connection groove 13183. The shape of the sixth connection portion 1327b is adapted to the shape of the sixth connection groove 13183. For example, the sixth connection portion 1327b is a cylindrical structure, and the sixth connection groove 13183 is also a cylindrical structure. For another example, the sixth connection portion 1327b is a prismatic structure, and the sixth connection groove 13183 is also a prismatic structure.

[0246] By adopting the above technical solution, the connection area between the first inner annular wall 1318 and the partition 132 is effectively increased, thereby further improving the connection strength between the first inner annular wall 1318 and the partition 132.

[0247] In some embodiments of this application, please refer to Fig.18 The first inner ring wall 1318 has a fifth connection surface 13184 on its end side facing the partition 132, and the partition 132 has a sixth connection surface 1328b on its side facing the stator body 133, and the fifth connection surface 13184 is fixedly connected to the sixth connection surface 1328b.

[0248] It can be understood that the fifth connecting surface 13184 is arranged on the end side of the first inner ring wall 1318 facing the partition 132, and the sixth connecting surface 1328b is arranged on the side of the partition 132 facing the first inner ring wall 1318, and the fifth connecting surface 13184 and the sixth connecting surface 1328b are adhered to each other and connected together.

[0249] In some embodiments, the fifth connecting surface 13184 is a plane, the sixth connecting surface 1328b is also a plane, and the fifth connecting surface 13184 and the sixth connecting surface 1328b are attached to each other and connected together.

[0250] In other embodiments, the fifth connecting surface 13184 is a curved surface, and the sixth connecting surface 1328b is also a curved surface. The shape of the fifth connecting surface 13184 is adapted to the shape of the sixth connecting surface 1328b so that the fifth connecting surface 13184 and the sixth connecting surface 1328b can be attached to each other and connected together.

[0251] By adopting the above technical solution, the connection area between the first inner annular wall 1318 and the partition 132 is effectively increased, thereby further improving the connection strength between the first inner annular wall 1318 and the partition 132.

[0252] In some embodiments of this application, please refer to Figure 5 and Figure 6 The second shell 131 includes a frame 1311 , and the frame 1311 is fixedly connected to the stator body 133 .

[0253] The skeleton 1311 is a supporting component of the first shell 121. It can be understood that the skeleton 1311 is made of a rigid material. Optionally, the rigid material can be, but is not limited to, copper, iron, aluminum, stainless steel, aluminum alloy, carbon fiber, etc., which are not specifically limited here. The skeleton 1311 can be an integrally formed component, for example, the skeleton 1311 is integrally formed by a casting process, and the skeleton 1311 can also be an assembled component assembled from multiple parts, for example, multiple parts of the skeleton 1311 are welded together into one.

[0254] The fixed connection between the skeleton 1311 and the stator body 133 means that the skeleton 1311 and the stator body 133 are relatively fixed after being fixedly connected, that is, the skeleton 1311 and the stator body 133 are in a relatively static state. Optionally, the method of fixedly connecting the skeleton 1311 and the stator body 133 can be, but is not limited to, welding, bonding, fastening connection, etc., which is not specifically limited here.

[0255] By adopting the above technical solution, the structural strength of the second shell 131 is effectively improved, thereby effectively reducing the risk of deformation of the second shell 131 and further reducing the risk of interference between the second shell 131 and other components of the axial flux motor 10.

[0256] In some embodiments of this application, please refer to Figure 5 and Figure 6 The skeleton 1311 is a metal part, and the skeleton 1311 is arranged on the non-air gap side of the stator body 133.

[0257] In other words, the skeleton 1311 is made of metal material. Optionally, the metal material may be, but is not limited to, copper, iron, aluminum, stainless steel, aluminum alloy, etc., and is not specifically limited here.

[0258] The side of the stator body 133 facing the above-mentioned air gap is defined as the air gap side of the stator body 133, and the other sides of the stator body 133 except the air gap side are defined as the non-air gap side of the stator body 133. The non-air gap side of the stator body 133 can be the side of the stator body 133 facing away from the rotor 12, or it can be a side located between the air gap side of the stator body 133 and the side of the stator body 133 facing away from the rotor 12.

[0259] By adopting the above technical solution, the structural strength of the second housing 131 is further improved without increasing the magnetic resistance between the stator body 133 and the rotor body 122, thereby further reducing the risk of deformation of the second housing 131.

[0260] In some embodiments of this application, please refer to Figure 5 and Figure 6 The skeleton 1311 includes a first frame body, which is disposed on a side of the stator body 133 facing away from the rotor body 122 and is fixedly connected to the stator body 133 .

[0261] The first frame is a supporting component of the skeleton 1311. The first frame is generally a plate-shaped structure and covers the side of the stator body 133 facing away from the rotor body 122. Optionally, the first frame can be an integrally formed component or an assembled component assembled from multiple parts. The material of the first frame can be, but is not limited to, copper, iron, aluminum, stainless steel, aluminum alloy, etc., which is not specifically limited here. In some embodiments, when the first frame includes multiple parts, the materials of the various parts of the first frame can be the same or different, which is not specifically limited here.

[0262] By adopting the above technical solution, it is convenient to fix the skeleton 1311 and the stator body 133 together.

[0263] In some embodiments of this application, please refer to Figure 5 and Figure 6 The first frame includes a first supporting portion 13111 and a seventh connecting portion 13112. The first supporting portion 13111 is arranged around the central axis of the axial flux motor 10. The seventh connecting portion 13112 is protruded from the periphery of the first supporting portion 13111 and is fixedly connected to the side of the stator body 133 facing away from the rotor body 122.

[0264] The first support portion 13111 is a supporting part of a part of the first frame. The first support portion 13111 is arranged around the central axis of the axial flux motor 10, that is, the first support portion 13111 is arranged around the rotating shaft 123 of the rotor 12. The first support portion 13111 is generally a plate-shaped structure and is covered on the side of the stator body 133 facing away from the rotor body 122. The first support portion 13111 can be an integrally formed component, that is, the first support portion 13111 is an annular structure, and the first support portion 13111 can also be composed of multiple parts, and the multiple parts are arranged around the rotating shaft 123 of the rotor 12. Optionally, the material of the first support portion 13111 can be but not limited to copper, iron, aluminum, stainless steel, aluminum alloy, etc., and is not specifically limited here.

[0265] The seventh connection portion 13112 is a part of the connection portion of the first frame for fixed connection with the stator body 133. The seventh connection portion 13112 is protruded from the periphery of the first support portion 13111, which means that at least part of the seventh connection portion 13112 protrudes from the periphery of the first support portion 13111, and the part of the seventh connection portion 13112 protruding from the periphery of the first support portion 13111 is fixedly connected to the side of the stator body 133 facing away from the rotor body 122. In some embodiments, the seventh connection portion 13112 is protruded from the inner periphery of the first support portion 13111. In other embodiments, the seventh connection portion 13112 is protruded from the outer periphery of the first support portion 13111. The seventh connection part 13112 can be integrally formed with the first support part 13111, for example, the seventh connection part 13112 and the first support part 13111 are integrally formed through a casting process, and the seventh connection part 13112 can also be separately connected to the first support part 13111, for example, the seventh connection part 13112 and the first support part 13111 are welded. Optionally, the material of the seventh connection part 13112 can be but not limited to copper, iron, aluminum, stainless steel, aluminum alloy, etc., which is not specifically limited here. It can be understood that when the seventh connection part 13112 and the first support part 13111 are integrally formed, the material of the seventh connection part 13112 is the same as the material of the first support part 13111, and when the seventh connection part 13112 and the first support part 13111 are separately connected, the material of the seventh connection part 13112 and the material of the first support part 13111 can be the same or different. The seventh connection part 13112 is fixedly connected to the stator body 133, which means that the seventh connection part 13112 is relatively fixed to the stator body 133 after being fixedly connected, that is, the seventh connection part 13112 and the stator body 133 are in a relatively static state. Optionally, the seventh connection part 13112 and the stator body 133 can be fixedly connected by, but not limited to, welding, bonding, fastening connection, etc., which is not specifically limited here.

[0266] By adopting the above technical solution, it is convenient to fix the skeleton 1311 and the stator body 133 together.

[0267] In some embodiments of this application, please refer to Fig.19 The seventh connection portion 13112 is annular and is arranged around the central axis of the axial flux motor 10 .

[0268] Taking welding as an example of the fixed connection between the seventh connection part 13112 and the stator body 133, during the welding operation of the seventh connection part 13112 and the stator body 133, the seventh connection part 13112 and the stator body 133 can be continuously welded along the circumference of the seventh connection part 13112 to form a weld mark with a closed loop structure between the seventh connection part 13112 and the stator body 133.

[0269] By adopting the above technical solution, the connection portion between the seventh connection part 13112 and the stator body 133 can be set to a closed-loop structure. In this way, not only the connection strength between the seventh connection part 13112 and the stator body 133 is effectively improved, thereby further improving the shaking of the second shell 131, but also an annular sealing boundary can be formed between the seventh connection part 13112 and the stator body 133, and sealing can be achieved without the need to additionally set a sealing structure between the side of the stator body 133 facing away from the rotor body 122 and the second shell 131, thereby effectively simplifying the structure of the stator 13.

[0270] In some embodiments of this application, please refer to Fig. 20 The seventh connection portion 13112 includes a plurality of first connection members spaced apart along the circumferential direction of the first support portion 13111 . The first connection members are protruded from the periphery of the first support portion 13111 and are fixedly connected to the side of the stator body 133 facing away from the rotor body 122 .

[0271] It can be understood that, in the process of connecting the seventh connecting portion 13112 with the stator body 133, each first connecting member can be connected to the side of the stator body 133 facing away from the rotor body 122 one by one. The number of first connecting members can be determined according to actual application needs, and can be 6, 8, 10, etc., which is not specifically limited here. The shape of the first connecting member can be, but is not limited to, a square, a long strip, a triangle, etc., which is not specifically limited here.

[0272] By adopting the above technical solution, the material usage of the skeleton 1311 is effectively reduced while ensuring sufficient connection strength between the seventh connecting portion 13112 and the stator body 133, thereby effectively reducing the production cost of the stator 13.

[0273] In some embodiments of this application, please refer to Figure 5 and Figure 6 The skeleton 1311 further includes a second frame 13115 , which is arranged on the outer peripheral side of the stator body 133 .

[0274] The second frame 13115 is another supporting component of the skeleton 1311. The second frame 13115 is generally a cylindrical structure, and the second frame 13115 is sleeved on the outer peripheral side of the stator body 133. The second frame 13115 can be an integrally formed component, that is, the second frame 13115 is an annular structure, and the second frame 13115 can also be composed of multiple parts, and the multiple parts are arranged along the outer peripheral side of the stator body 133. Optionally, the material of the second frame 13115 can be but not limited to copper, iron, aluminum, stainless steel, aluminum alloy, etc., which is not specifically limited here.

[0275] By adopting the above technical solution, the structural strength of the second shell 131 is further improved, thereby further reducing the risk of deformation of the second shell 131.

[0276] In some embodiments of this application, please refer to Figure 5 and Figure 6 , the second frame 13115 is fixedly connected to the first supporting portion 13111.

[0277] The second frame 13115 is fixedly connected to the first support portion 13111, which means that the second frame 13115 is relatively fixed to the first support portion 13111 after being fixedly connected to the first support portion 13111, that is, the second frame 13115 and the first support portion 13111 are in a relatively static state. The second frame 13115 can be integrally formed with the first support portion 13111, for example, the second frame 13115 and the first support portion 13111 are integrally formed through a casting process, or the second frame 13115 can be separately connected to the first support portion 13111, for example, the second frame 13115 and the first support portion 13111 are welded. The second frame 13115 can be fixedly connected to any part of the first support portion 13111, for example, when the seventh connection portion 13112 is protruding from the inner periphery of the first support portion 13111, the second frame 13115 is fixedly connected to the outer periphery of the first support portion 13111.

[0278] By adopting the above technical solution, the overall structural strength of the skeleton 1311 is effectively improved, thereby further improving the structural strength of the second shell 131 and further reducing the risk of deformation of the second shell 131.

[0279] In some embodiments of this application, please refer to Figure 5 and Figure 6 The second shell 131 further includes a first insulator 1312 , and the first insulator 1312 covers the second frame 13115 .

[0280] The first insulator 1312 is made of an insulating material, which includes but is not limited to rubber, silicone, glass, ceramic, etc., and is not specifically limited here. The first insulator 1312 can be directly molded on the second frame 13115. For example, the first insulator 1312 is molded on the second frame 13115 by an injection molding process to cover the second frame 13115. The first insulator 1312 can also be molded separately and then sleeved on the second frame 13115 to cover the second frame 13115.

[0281] In the related art, for the axial flux motor 10, the winding slots 1333 of the stator body 133 penetrate the outer circumference of the stator body 133, so that the winding is exposed on the outer circumference of the stator body 133. By adopting the above technical solution, the second frame 13115 can be insulated and separated from the winding of the stator 13, thereby effectively improving the insulation performance of the stator 13.

[0282] In some embodiments, in order to further improve the insulation performance of the stator 13 , the first insulator 1312 may also cover the first support portion 13111 .

[0283] In some embodiments of this application, please refer to Figure 5 and Figure 6 The first frame also includes a second support portion 13113 and an eighth connection portion 13114. The second support portion 13113 is arranged in the inner ring space of the first support portion 13111 and is arranged around the central axis of the axial flux motor 10. The eighth connection portion 13114 is protruded from the periphery of the second support portion 13113 and is fixedly connected to the side of the stator body 133 facing away from the rotor body 122.

[0284] The second support portion 13113 is another supporting part of the first frame. The second support portion 13113 is generally a plate-shaped structure. The second support portion 13113 is arranged in the inner ring space of the first support portion 13111 and covers the side of the stator body 133 facing away from the rotor body 122. The second support portion 13113 is arranged in the inner ring space of the first support portion 13111, which means that the first support portion 13111 is arranged around the second support portion 13113. The second support portion 13113 is arranged around the central axis of the axial flux motor 10, that is, the second support portion 13113 is arranged around the rotating shaft 123 of the rotor 12. The second support portion 13113 can be an integrally formed component, that is, the second support portion 13113 is annular, and the second support portion 13113 can also be composed of multiple parts, and the multiple parts are arranged around the rotating shaft 123 of the rotor 12. Optionally, the material of the second support portion 13113 may be, but is not limited to, copper, iron, aluminum, stainless steel, aluminum alloy, etc., and is not specifically limited here.

[0285] The eighth connection portion 13114 is another connection portion of the first frame for fixedly connecting with the stator body 133. The eighth connection portion 13114 is protruding from the periphery of the second support portion 13113, which means that at least part of the eighth connection portion 13114 protrudes from the periphery of the second support portion 13113, and the part of the eighth connection portion 13114 protruding from the periphery of the second support portion 13113 is fixedly connected to the side of the stator body 133 facing away from the rotor body 122. In some embodiments, the eighth connection portion 13114 is protruding from the inner periphery of the second support portion 13113. In other embodiments, the eighth connection portion 13114 is protruding from the outer periphery of the second support portion 13113. The eighth connection part 13114 can be integrally formed with the second support part 13113, for example, the eighth connection part 13114 and the second support part 13113 are integrally formed by a casting process, and the eighth connection part 13114 can also be separately connected to the second support part 13113, for example, the eighth connection part 13114 and the second support part 13113 are welded. Optionally, the material of the eighth connection part 13114 can be but not limited to copper, iron, aluminum, stainless steel, aluminum alloy, etc., which is not specifically limited here. It can be understood that when the eighth connection part 13114 and the second support part 13113 are integrally formed, the material of the eighth connection part 13114 is the same as the material of the second support part 13113, and when the eighth connection part 13114 and the second support part 13113 are separately connected, the material of the eighth connection part 13114 and the material of the second support part 13113 can be the same or different.

[0286] The eighth connection part 13114 is fixedly connected to the stator body 133, which means that the eighth connection part 13114 is relatively fixed to the stator body 133 after being fixedly connected, that is, the eighth connection part 13114 and the stator body 133 are in a relatively static state. Optionally, the eighth connection part 13114 and the stator body 133 can be fixedly connected by, but not limited to, welding, bonding, fastening connection, etc., which is not specifically limited here.

[0287] By adopting the above technical solution, not only the structural strength of the second shell 131 is further improved, thereby further reducing the risk of deformation of the second shell 131, but also the connection strength between the skeleton 1311 and the stator body 133 is further improved, thereby further improving the shaking of the second shell 131.

[0288] In some embodiments of this application, please refer to Fig.19 The eighth connecting portion 13114 is in a ring-shaped structure and is arranged around the central axis of the axial flux motor 10.

[0289] Taking welding as an example of the fixed connection between the eighth connection part 13114 and the stator body 133, during the welding operation of the eighth connection part 13114 and the stator body 133, the eighth connection part 13114 and the stator body 133 can be continuously welded along the circumference of the eighth connection part 13114 to form a weld mark with a closed loop structure between the eighth connection part 13114 and the stator body 133.

[0290] By adopting the above technical scheme, the connection portion between the eighth connection part 13114 and the stator body 133 can be set to a closed-loop structure. In this way, not only the connection strength between the eighth connection part 13114 and the stator body 133 is effectively improved, thereby further improving the shaking of the second shell 131, but also an annular sealing boundary can be formed between the eighth connection part 13114 and the stator body 133, and sealing can be achieved without the need to additionally set a sealing structure between the side of the stator body 133 facing away from the rotor body 122 and the second shell 131, thereby effectively simplifying the structure of the stator 13.

[0291] In some embodiments of this application, please refer to Fig. 20 The eighth connection portion 13114 includes a plurality of second connection members spaced apart along the circumference of the second support portion 13113 . The second connection members are protruded from the periphery of the second support portion 13113 and fixedly connected to the side of the stator body 133 facing away from the rotor body 122 .

[0292] It can be understood that in the process of connecting the eighth connecting portion 13114 to the stator body 133, each second connecting member can be connected to the side of the stator body 133 facing away from the rotor body 122 one by one. The number of second connecting members can be determined according to actual application needs, and can be 6, 8, 10, etc., which is not specifically limited here. The shape of the second connecting member can be, but is not limited to, square, long strip, triangle, etc., which is not specifically limited here.

[0293] By adopting the above technical solution, the material usage of the skeleton 1311 is effectively reduced while ensuring sufficient connection strength between the eighth connecting portion 13114 and the stator body 133, thereby effectively reducing the production cost of the stator 13.

[0294] In some embodiments of this application, please refer to Figure 5 and Figure 6 The skeleton 1311 further includes a third frame 13116 disposed in the shaft cavity 1335 , and the third frame 13116 is arranged around the rotating shaft 123 .

[0295] The third frame 13116 is another supporting component of the skeleton 1311. The third frame 13116 is generally a cylindrical structure, and the third frame 13116 is arranged in the above-mentioned shaft cavity 1335 and sleeved on the rotating shaft 123 of the rotor 12. The third frame 13116 can be an integrally formed component, that is, the third frame 13116 is an annular structure, and the third frame 13116 can also be composed of multiple parts, and the multiple parts are arranged around the rotating shaft 123 of the rotor 12. Optionally, the material of the third frame 13116 can be but not limited to copper, iron, aluminum, stainless steel, aluminum alloy, etc., which is not specifically limited here.

[0296] By adopting the above technical solution, the structural strength of the second shell 131 is further improved, thereby further reducing the risk of deformation of the second shell 131.

[0297] In some embodiments of this application, please refer to Figure 5 and Figure 6 , the third frame 13116 is fixedly connected to the second supporting portion 13113 .

[0298] The third frame 13116 is fixedly connected to the second support portion 13113, which means that the third frame 13116 is relatively fixed to the second support portion 13113 after being fixedly connected, that is, the third frame 13116 and the second support portion 13113 are in a relatively static state. The third frame 13116 can be integrally formed with the second support portion 13113, for example, the third frame 13116 and the second support portion 13113 are integrally formed through a casting process, or the third frame 13116 can be separately connected to the second support portion 13113, for example, the third frame 13116 and the second support portion 13113 are welded. The third frame 13116 can be fixedly connected to any part of the second support portion 13113, for example, when the eighth connection portion 13114 is protruding from the outer periphery of the second support portion 13113, the third frame 13116 is fixedly connected to the inner periphery of the second support portion 13113.

[0299] By adopting the above technical solution, the overall structural strength of the skeleton 1311 is effectively improved, and the structural strength of the second shell 131 is further improved, thereby further reducing the risk of deformation of the second shell 131.

[0300] In some embodiments of this application, please refer to Figure 5 and Figure 6 The second shell 131 further includes a second insulator 1313 , and the second insulator 1313 covers the third frame 13116 .

[0301] The second insulator 1313 is made of an insulating material, including but not limited to rubber, silicone, glass, ceramic, etc., which are not specifically limited here. The second insulator 1313 can be directly molded on the third frame 13116. For example, the second insulator 1313 is molded on the third frame 13116 by injection molding to cover the third frame 13116. The second insulator 1313 can also be molded separately and then sleeved on the third frame 13116 to cover the third frame 13116.

[0302] In the related art, for the axial flux motor 10, the winding slots 1333 of the stator body 133 penetrate the peripheral wall of the shaft cavity 1335, so that the winding is exposed on the peripheral wall of the shaft cavity 1335. By adopting the above technical solution, the third frame 13116 can be insulated and separated from the winding of the stator 13, thereby effectively improving the insulation performance of the stator 13.

[0303] In some embodiments, in order to further improve the insulation performance of the stator 13 , the second insulator 1313 may also cover the second support portion 13113 .

[0304] In some embodiments of the present application, the second housing 131 is sleeved on the stator body 133 and is interference connected with the stator body 133 .

[0305] In some embodiments, when the second shell 131 includes the first outer annular wall 1317 , the first outer annular wall 1317 is sleeved on the stator body 133 and is interference fit with the stator body 133 to achieve a fixed connection between the second shell 131 and the stator body 133 .

[0306] By adopting the above technical solution, it is convenient to fix the stator body 133 and the second housing 131 together.

[0307] In some embodiments of this application, please refer to Figure 5 and Figure 6 A gap 13117 is formed on the wall of the second shell 131 , and the stator body 133 is fixedly connected to the shell 11 via the gap 13117 .

[0308] In some embodiments, when the second shell 131 includes a skeleton 1311, the seventh connection portion 13112 and the eighth connection portion 13114 of the first frame of the skeleton 1311 are spaced radially along the stator 13 to form the above-mentioned gap 13117, and the stator body 133 is fixedly connected to the shell 11 through the gap 13117.

[0309] In some embodiments, the stator body 133 is fixedly connected to the housing 11 via a connector. Specifically, one side of the connector is fixedly connected to the base 1334 of the stator body 133 , and the other side of the connector is fixedly connected to the housing 11 through the gap 13117 .

[0310] In other embodiments, the housing 11 is provided with a first protrusion, and the first protrusion passes through the gap 13117 and is fixedly connected to the base 1334 of the stator body 133 .

[0311] In some other implementations, the base 1334 of the stator body 133 is provided with a second protrusion, and the second protrusion passes through the gap 13117 and is fixedly connected to the shell 11.

[0312] By adopting the above technical solution, it is convenient to fix the stator body 133 and the housing 11 together.

[0313] In some embodiments of the present application, the stator body 133 is sealedly connected to the second shell 131 to seal and separate the gap 13117 from the second cavity 1314, the second shell 131 is sealedly connected to the partition 132, the second cavity 1314 contains a cooling medium, and at least a portion of the stator body 133 is immersed in the cooling medium.

[0314] The cooling medium is a medium used to absorb the heat generated by the stator body 133 and other heat-generating components. The cooling medium can be statically accommodated in the second cavity 1314, or the cooling medium can enter the second cavity 1314 during the circulation process. Optionally, the cooling medium can be, but is not limited to, cooling oil, cooling water, etc., which is not specifically limited here.

[0315] In some embodiments, when the second shell 131 includes a skeleton 1311 and the seventh connection part 13112 and the eighth connection part 13114 of the skeleton 1311 are annularly arranged on the rotating shaft 123 of the rotor 12, the seventh connection part 13112 and the stator body 133 can be continuously welded along the circumference of the seventh connection part 13112 to form a weld mark with a closed loop structure between the seventh connection part 13112 and the stator body 133, and the eighth connection part 13114 and the stator body 133 can be continuously welded along the circumference of the eighth connection part 13114 to form a weld mark with a closed loop structure between the eighth connection part 13114 and the stator body 133, so as to achieve a sealed connection between the stator body 133 and the second shell 131, thereby sealingly separating the gap 13117 from the second cavity 1314.

[0316] Of course, in other embodiments, the stator body 133 and the second housing 131 may also be sealed and connected in other ways. For example, the stator body 133 and the second housing 131 may be sealed and connected by a sealing component such as a sealing ring.

[0317] The second shell 131 is sealedly connected to the partition 132, which means that the first cavity 1211 cannot communicate with the external environment of the second shell 131 through the connection between the second shell 131 and the partition 132. In some implementations, when the second shell 131 includes a first outer annular wall 1317 and a first inner annular wall 1318, the end side of the first outer annular wall 1317 facing the partition 132 and the end side of the first inner annular wall 1318 facing the partition 132 are sealedly connected to the partition 132. The manner in which the end side of the first outer annular wall 1317 facing the partition 132 and the end side of the first inner annular wall 1318 facing the partition 132 are sealedly connected to the partition 132 can be determined according to actual application needs, for example, a sealant is filled between the end side of the first outer annular wall 1317 facing the partition 132 and the partition 132, and between the end side of the first inner annular wall 1318 facing the partition 132 and the partition 132, which is not specifically limited here.

[0318] By adopting the above technical solution, the second cavity 1314 is effectively separated from the first cavity 1211, which effectively improves the situation where the cooling medium in the second cavity 1314 directly enters the first cavity 1211, thereby reducing the risk of the rotor body 122 being immersed in the cooling medium and effectively reducing the loss of the axial flux motor 10.

[0319] In some embodiments of this application, please refer to Figure 5 The second shell 131 has a first cooling interface 1315 connected to the liquid inlet pipeline and a second cooling interface 1316 connected to the liquid outlet pipeline. The first cooling interface 1315 and the second cooling interface 1316 are connected to the second cavity 1314, and the height of the first cooling interface 1315 is less than the height of the second cooling interface 1316.

[0320] The height of the first cooling interface 1315 refers to the distance between the first cooling interface 1315 and the ground plane when the axial flux motor 10 is in use. Similarly, the height of the second cooling interface 1316 refers to the distance between the second cooling interface 1316 and the ground plane when the axial flux motor 10 is in use.

[0321] By adopting the above technical solution, the cooling medium flows into the second cavity 1314 from the lower part of the second shell 131 and flows out of the second cavity 1314 from the higher part of the second shell 131. In this way, the gas in the second cavity 1314 is effectively discharged to the outside, which effectively improves the air entrainment phenomenon of the cooling medium, thereby effectively improving the cooling efficiency of the axial flux motor 10.

[0322] In some embodiments of this application, please refer to Figure 5 The first cooling interface 1315 is opened at the bottom of the second shell 131 , and the second cooling interface 1316 is opened at the top of the second shell 131 .

[0323] The bottom of the second shell 131 and the top of the second shell 131 can be two parts of the second shell 131 divided by the central axis of the axial flux motor 10, wherein the bottom of the second shell 131 refers to the part of the second shell 131 closest to the ground plane, and the top of the second shell 131 refers to the part of the second shell 131 farthest from the ground plane.

[0324] By adopting the above technical solution, the air entrainment phenomenon of the cooling medium is further improved, thereby further improving the cooling efficiency of the axial flux motor 10.

[0325] In some embodiments of this application, please refer to Figure 6 The second shell 131 is sealed and connected with the partition 132. The axial flux motor 10 also includes a sealing assembly 14, which is arranged between the outer shell 11 and the second shell 131, so that the outer shell 11, the second shell 131, and the sealing assembly 14 are surrounded to form a third cavity. The third cavity is connected to the second cavity 1314 through a gap 13117 to form a cooling cavity. The cooling cavity contains a cooling medium, and at least a part of the stator body 133 is immersed in the cooling medium.

[0326] The sealing assembly 14 is used to seal the gap between the outer shell 11 and the second shell 131 to prevent the cooling medium in the cooling cavity from directly entering the first cavity 1211 .

[0327] By adopting the above technical solution, the cooling chamber is effectively separated from the first cavity 1211, which effectively improves the situation where the cooling medium in the cooling chamber directly enters the first cavity 1211, thereby reducing the risk of the rotor body 122 being immersed in the cooling medium and effectively reducing the loss of the axial flux motor 10.

[0328] In some embodiments of this application, please refer to Figure 6 The second shell 131 has a first inner ring wall 1318 and a first outer ring wall 1317 arranged around the first inner ring wall 1318, the stator body 133 is arranged between the first inner ring wall 1318 and the first outer ring wall 1317, the outer shell 11 has a second outer ring wall 111 arranged around the first outer ring wall 1317 and a second inner ring wall 112 arranged in the inner ring space of the first inner ring wall 1318, the sealing assembly 14 includes a first seal 141 and a second seal 142, the first seal 141 is arranged between the first outer ring wall 1317 and the second outer ring wall 111, and the second seal 142 is arranged between the first inner ring wall 1318 and the second inner ring wall 112.

[0329] The second inner annular wall 112 is used to provide a lead-out space for the rotating shaft 123. In other words, at least a portion of the rotating shaft 123 is disposed in the inner annular space of the second inner annular wall 112. The second outer annular wall 111 is disposed in annularly around the second inner annular wall 112, that is, the second inner annular wall 112 is disposed in the inner annular space of the second outer annular wall 111. In some embodiments, a bearing is installed in the inner annular space of the second inner annular wall 112, and at least a portion of the rotating shaft 123 is installed in the bearing.

[0330] The first inner annular wall 1318 is disposed in an annular space of the second inner annular wall 112, that is, the second inner annular wall 112 is disposed in the inner annular space of the first inner annular wall 1318. The second outer annular wall 111 is disposed in an annular space of the first outer annular wall 1317, that is, the first outer annular wall 1317 is disposed in the inner annular space of the second outer annular wall 111, and the first outer annular wall 1317 is disposed in annular space of the first inner annular wall 1318. In other words, the second inner annular wall 112, the first inner annular wall 1318, the first outer annular wall 1317 and the second outer annular wall 111 are sequentially nested along the radial direction of the axial flux motor 10.

[0331] The first seal 141 is a component used to close the gap between the first outer annular wall 1317 and the second outer annular wall 111. The material of the first seal 141 can be but is not limited to rubber, silicone, sealing glue, etc., which is not specifically limited here. In this embodiment, the first seal 141 is an annular structure, and the first seal 141 is sleeved on the outer peripheral side of the first outer annular wall 1317 and pressed between the first outer annular wall 1317 and the second outer annular wall 111.

[0332] The second sealing member 142 is a member for closing the gap between the first inner annular wall 1318 and the second inner annular wall 112. The material of the second sealing member 142 may be, but is not limited to, rubber, silicone, sealing glue, etc., which are not specifically limited here. In this embodiment, the second sealing member 142 is an annular structure, and the second sealing member 142 is sleeved on the outer peripheral side of the second inner annular wall 112 and pressed between the first inner annular wall 1318 and the second inner annular wall 112.

[0333] In some embodiments, when the axial flux motor 10 is a dual-stator 13 single-rotor 12 motor, the number of first seals 141 and the number of second seals 142 are at least two, one first seal 141 is pressed between the first outer annular wall 1317 of one stator 13 and the second outer annular wall 111 of the outer casing 11, another first seal 141 is pressed between the first outer annular wall 1317 of another stator 13 and the second outer annular wall 111 of the outer casing 11, one second seal 142 is pressed between the first inner annular wall 1318 of one stator 13 and the second inner annular wall 112 of the outer casing 11, and another second seal 142 is pressed between the first inner annular wall 1318 of another stator 13 and the second inner annular wall 112 of the outer casing 11.

[0334] In other embodiments, when the axial flux motor 10 is a dual-rotor 12 single-stator 13 motor, the number of first seals 141 and the number of second seals 142 are at least two, one first seal 141 is pressed between one end side of the first outer ring wall 1317 of the stator 13 and the second outer ring wall 111 of the outer casing 11, another first seal 141 is pressed between the other end side of the first outer ring wall 1317 of the stator 13 and the second outer ring wall 111 of the outer casing 11, one second seal 142 is pressed between one end side of the first inner ring wall 1318 of the stator 13 and the second inner ring wall 112 of the outer casing 11, and another second seal 142 is pressed between the other end side of the first inner ring wall 1318 of the stator 13 and the second inner ring wall 112 of the outer casing 11.

[0335] By adopting the above technical solution, the cooling chamber is effectively separated from the first cavity 1211, which effectively improves the situation where the cooling medium in the cooling chamber directly enters the first cavity 1211, thereby reducing the risk of the rotor body 122 being immersed in the cooling medium and effectively reducing the loss of the axial flux motor 10.

[0336] In some embodiments of this application, please refer to Figure 6 The shell 11 has a third cooling interface 113 connected to the liquid inlet pipeline and a fourth cooling interface 114 connected to the liquid outlet pipeline. The third cooling interface 113 and the fourth cooling interface 114 are connected to the cooling cavity, and the height of the third cooling interface 113 is less than the height of the fourth cooling interface 114.

[0337] The height of the third cooling interface 113 refers to the distance between the third cooling interface 113 and the ground plane when the axial flux motor 10 is in use. Similarly, the height of the fourth cooling interface 114 refers to the distance between the fourth cooling interface 114 and the ground plane when the axial flux motor 10 is in use.

[0338] By adopting the above technical solution, the cooling medium flows into the cooling cavity from the lower part of the shell 11 and flows out of the cooling cavity from the higher part of the shell 11. In this way, the gas in the cooling cavity is effectively discharged to the outside, which effectively improves the air entrainment phenomenon of the cooling medium, thereby effectively improving the cooling efficiency of the axial flux motor 10.

[0339] In some embodiments of this application, please refer to Figure 6 The third cooling interface 113 is opened at the bottom of the shell 11 , and the fourth cooling interface 114 is opened at the top of the shell 11 .

[0340] The bottom of the shell 11 and the top of the shell 11 can be two parts of the shell 11 divided by the central axis of the axial flux motor 10, wherein the bottom of the shell 11 refers to the part of the shell 11 closest to the ground plane, and the top of the shell 11 refers to the part of the shell 11 farthest from the ground plane.

[0341] By adopting the above technical solution, the air entrainment phenomenon of the cooling medium is further improved, thereby further improving the cooling efficiency of the axial flux motor 10.

[0342] In some embodiments of this application, please refer to Figure 5 and Figure 6 A through hole 1212 is formed in the cavity wall of the first cavity 1211 .

[0343] The through hole 1212 is a hole portion for connecting the first cavity 1211 with other spaces except the second cavity 1314. In other words, the air in the first cavity 1211 can enter other spaces except the second cavity 1314 through the through hole 1212. For example, the air in the first cavity 1211 can enter the space between the outer wall of the first shell 121 and the inner wall of the housing 11 through the through hole 1212. Optionally, the shape of the through hole 1212 can be, but is not limited to, circular, square, triangular, etc., which is not specifically limited here.

[0344] By adopting the above technical solution, the first cavity 1211 is connected to the external space of the first shell 121. During the high-speed rotation of the rotor body 122, the air pressure in the first cavity 1211 and the air pressure in the external space of the first shell 121 can be in a balanced state, thereby effectively improving the performance of the rotor 12.

[0345] In some embodiments of this application, please refer to Figure 5 and Figure 6 The number of the through holes 1212 is multiple, and the multiple through holes 1212 are arranged along the circumferential direction of the rotor body 122 .

[0346] In this embodiment, the plurality of through holes 1212 are evenly distributed along the circumference of the rotor body 122. Of course, in other embodiments, the plurality of through holes 1212 are unevenly distributed along the circumference of the rotor body 122. It should be noted that the number of through holes 1212 can be set according to actual application needs, and the number of through holes 1212 can be two, three, four, five, etc., which is not specifically limited here.

[0347] By adopting the above technical solution, the air pressure in the first cavity 1211 and the air pressure in the external space of the first shell 121 are more effectively maintained in a balanced state, thereby further improving the performance of the rotor 12 .

[0348] In some embodiments of this application, please refer to Figure 5 and Figure 6 There are two stators 13 , and the rotor 12 is disposed between the two stators 13 .

[0349] In other words, the axial flux motor 10 is a double-stator 13 single-rotor 12 motor.

[0350] In some embodiments, when the second cavity 1314 contains a cooling medium, the second cavities 1314 of the two stators 13 may be connected or not connected, which is not specifically limited herein.

[0351] By adopting the above technical solution, the performance of the double-stator 13 single-rotor 12 motor is effectively improved.

[0352] Second, please also refer to Figure 3 and Figure 4 , an embodiment of the present application further provides an electric drive device 100, comprising the axial flux motor 10 described in any one of the above embodiments.

[0353] The electric drive device 100 provided in the embodiment of the present application adopts the above-mentioned axial flux motor 10 , thereby effectively improving the performance of the electric drive device 100 .

[0354] Third, see Figure 1 The embodiment of the present application further provides an electric drive system, including a battery 200 and the above-mentioned electric drive device 100, and the battery 200 is electrically connected to the electric drive device 100.

[0355] The electric drive system provided in the embodiment of the present application adopts the above-mentioned electric drive device 100, thereby effectively improving the performance of the electric drive system.

[0356] Fourth, please refer to Figure 1 , an embodiment of the present application also provides an electric device, including the above-mentioned electric drive system.

[0357] The electric device provided in the embodiment of the present application adopts the above-mentioned electric drive system, thereby effectively improving the performance of the electric device.

[0358] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An axial flux motor, characterized in that: The axial flux motor comprises: shell; A rotor is accommodated in the housing, the rotor comprising a first shell and a rotor body, the first shell having a first cavity for accommodating the rotor body; A stator is accommodated in the outer shell, and the stator includes a second shell, a partition and a stator body, the second shell has a second cavity for accommodating the stator body, the partition is arranged between the first shell and the second shell to separate the first cavity from the second cavity, the second shell and the partition are fixedly connected to the stator body, and the stator body is fixedly connected to the outer shell.

2. The axial flux motor according to claim 1, characterized in that: The stator body includes a plurality of iron cores and a plurality of slot wedges. A winding slot is formed between two adjacent iron cores. The slot wedges are inserted into the winding slots and fixedly connected to the partitions.

3. The axial flux motor according to claim 2, characterized in that: The slot wedge includes an inserting portion and a first connecting portion, the inserting portion is inserted into the winding slot, the first connecting portion is arranged on a side of the inserting portion facing the partition, and the first connecting portion extends out of the winding slot and is fixedly connected to the partition.

4. The axial flux motor according to claim 3, characterized in that: The separator is provided with a first connection hole, and the first connection portion is fixedly connected in the first connection hole; or, The separator is provided with a first connecting groove, and the first connecting portion is fixedly connected in the first connecting groove.

5. The axial flux motor according to claim 2, characterized in that: A second connecting portion is provided on a side of the separator facing the stator body. The second connecting portion extends into the winding slot and is fixedly connected to the slot wedge.

6. The axial flux motor according to claim 5, characterized in that: The slot wedge comprises an inserting portion, and the inserting portion is inserted into the winding slot; The plug-in portion is provided with a second connection hole, and the second connection portion is fixedly connected in the second connection hole; or, The plug-in portion is provided with a second connection groove, and the second connection portion is fixedly connected in the second connection groove.

7. The axial flux motor according to claim 2, characterized in that: The slot wedge includes an insert portion, which is inserted into the winding slot. The insert portion has a first connecting surface on a side facing the partition, and the partition has a second connecting surface on a side facing the stator body. The first connecting surface is fixedly connected to the second connecting surface.

8. The axial flux motor according to any one of claims 2 to 7, characterized in that: The slot wedge is heat-riveted, welded or bonded to the partition.

9. The axial flux motor according to any one of claims 1 to 8, characterized in that: The second housing has a first outer annular wall arranged around the outer circumference of the stator body, and the end side of the first outer annular wall facing the partition is fixedly connected to the partition.

10. The axial flux motor according to claim 9, characterized in that: A third connecting portion is provided on the end side of the first outer ring wall facing the partition, and the third connecting portion is fixedly connected to the partition.

11. The axial flux motor according to claim 10, characterized in that: The partition is provided with a third connection hole, and the third connection portion is fixedly connected in the third connection hole; or, The partition is provided with a third connecting groove, and the third connecting portion is fixedly connected in the third connecting groove.

12. The axial flux motor according to claim 9, characterized in that: A fourth connection portion is provided on a side of the separator facing the stator body, and the fourth connection portion is fixedly connected to an end side of the first outer ring wall facing the separator.

13. The axial flux motor according to claim 12, characterized in that: A fourth connection hole is formed on the end side of the first outer ring wall facing the partition, and the fourth connection portion is fixedly connected in the fourth connection hole; or, A fourth connecting groove is formed on the end side of the first outer ring wall facing the partition, and the fourth connecting portion is fixedly connected in the fourth connecting groove.

14. The axial flux motor according to claim 9, characterized in that: The end side of the first outer ring wall facing the partition has a third connection surface, and the side of the partition facing the stator body has a fourth connection surface, and the third connection surface is fixedly connected to the fourth connection surface.

15. The axial flux motor according to any one of claims 9 to 14, characterized in that: An axial cavity is opened in the middle of the stator body, and the rotor also includes a rotating shaft fixedly connected to the rotor body, and the rotating shaft is passed through the axial cavity. The second shell also has a first inner ring wall arranged in the axial cavity, and the first inner ring wall is arranged around the rotating shaft. The end side of the first inner ring wall facing the partition is fixedly connected to the partition.

16. The axial flux motor according to claim 15, characterized in that: A fifth connecting portion is provided on the end side of the first inner ring wall facing the partition, and the fifth connecting portion is fixedly connected to the partition.

17. The axial flux motor according to claim 16, characterized in that: The partition is provided with a fifth connection hole, and the fifth connection portion is fixedly connected in the fifth connection hole; or, The partition is provided with a fifth connecting groove, and the fifth connecting portion is fixedly connected in the fifth connecting groove.

18. The axial flux motor according to claim 15, characterized in that: A sixth connection portion is provided on a side of the separator facing the stator body, and the sixth connection portion is fixedly connected to an end side of the first inner ring wall facing the separator.

19. The axial flux motor according to claim 18, characterized in that: The first inner ring wall is provided with a sixth connecting hole, and the sixth connecting portion is fixedly connected in the sixth connecting hole; or, A sixth connecting groove is formed on the end side of the first inner ring wall facing the partition, and the sixth connecting portion is fixedly connected in the sixth connecting groove.

20. The axial flux motor according to claim 15, characterized in that: The end side of the first inner ring wall facing the partition has a fifth connection surface, and the side of the partition facing the stator body has a sixth connection surface, and the fifth connection surface is fixedly connected to the sixth connection surface.

21. The axial flux motor according to any one of claims 1 to 8, characterized in that: The second shell includes a frame, and the frame is fixedly connected to the stator body.

22. The axial flux motor according to claim 21, characterized in that: The frame is a metal part, and the frame is arranged on the non-air gap side of the stator body.

23. The axial flux motor according to claim 22, characterized in that: The frame includes a first frame body, which is arranged on a side of the stator body facing away from the rotor body and is fixedly connected to the stator body.

24. The axial flux motor according to claim 23, characterized in that: The first frame includes a first supporting portion and a seventh connecting portion. The first supporting portion is arranged around the central axis of the axial flux motor. The seventh connecting portion is protruded from the periphery of the first supporting portion and is fixedly connected to a side of the stator body facing away from the rotor body.

25. The axial flux motor according to claim 24, characterized in that: The seventh connecting portion is an annular structure and is arranged around the central axis of the axial flux motor.

26. The axial flux motor according to claim 24, characterized in that: The seventh connection portion includes a plurality of first connection members spaced apart along the circumference of the first support portion. The first connection members are protruded from the periphery of the first support portion and fixedly connected to a side of the stator body facing away from the rotor body.

27. The axial flux motor according to any one of claims 24 to 26, characterized in that: The frame also includes a second frame body, and the second frame body is arranged around the outer peripheral side of the stator body.

28. The axial flux motor according to claim 27, characterized in that: The second frame is fixedly connected to the first supporting portion.

29. The axial flux motor according to claim 27 or 28, characterized in that: The second shell further includes a first insulator, and the first insulator covers the second frame.

30. The axial flux motor according to any one of claims 24 to 29, characterized in that: The first frame also includes a second supporting portion and an eighth connecting portion. The second supporting portion is arranged in the inner ring space of the first supporting portion and is arranged around the central axis of the axial flux motor. The eighth connecting portion is protruded from the periphery of the second supporting portion and is fixedly connected to the side of the stator body facing away from the rotor body.

31. The axial flux motor according to claim 30, characterized in that: The eighth connecting portion is an annular structure and is arranged around the central axis of the axial flux motor.

32. The axial flux motor of claim 30, wherein: The eighth connection portion includes a plurality of second connection members spaced apart along the circumference of the second support portion. The second connection members are protruded from the circumference of the second support portion and fixedly connected to a side of the stator body facing away from the rotor body.

33. The axial flux motor according to any one of claims 30 to 32, characterized in that: An axial cavity is opened in the middle of the stator body, the rotor also includes a rotating shaft fixedly connected to the rotor body, the rotating shaft passes through the axial cavity, and the skeleton also includes a third frame arranged in the axial cavity, and the third frame is arranged around the rotating shaft.

34. The axial flux motor of claim 33, wherein: The third frame is fixedly connected to the second supporting portion.

35. An axial flux motor according to claim 33 or 34, characterized in that: The second shell further includes a second insulator, and the second insulator covers the third frame.

36. The axial flux motor of claim 1, wherein: The second housing is sleeved on the stator body and is interference connected with the stator body.

37. The axial flux motor according to any one of claims 1 to 8, characterized in that: A gap is formed on the wall of the second shell, and the stator body is fixedly connected to the shell through the gap.

38. The axial flux motor of claim 37, wherein: The stator body is sealedly connected to the second shell to seal and separate the gap from the second cavity. The second shell is sealedly connected to the partition. The second cavity contains a cooling medium. At least a part of the stator body is immersed in the cooling medium.

39. The axial flux motor of claim 38, wherein: The second shell has a first cooling interface connected to the liquid inlet pipeline and a second cooling interface connected to the liquid outlet pipeline. The first cooling interface and the second cooling interface are connected to the second cavity. The height of the first cooling interface is smaller than the height of the second cooling interface.

40. The axial flux motor according to claim 39, characterized in that: The first cooling interface is opened at the bottom of the second shell, and the second cooling interface is opened at the top of the second shell.

41. The axial flux motor of claim 37, wherein: The second shell is sealed and connected to the partition. The axial flux motor also includes a sealing assembly, which is arranged between the outer shell and the second shell, so that the outer shell, the second shell, and the sealing assembly enclose a third cavity, and the third cavity is connected to the second cavity through the gap to form a cooling cavity. The cooling cavity contains a cooling medium, and at least a portion of the stator body is immersed in the cooling medium.

42. The axial flux motor of claim 41, wherein: The second shell has a first inner ring wall and a first outer ring wall arranged in an annular shape around the first inner ring wall, the stator body is arranged between the first inner ring wall and the first outer ring wall, the outer shell has a second outer ring wall arranged in annular shape around the first outer ring wall and a second inner ring wall arranged in the inner ring space of the first inner ring wall, the sealing assembly includes a first seal and a second seal, the first seal is arranged between the first outer ring wall and the second outer ring wall, and the second seal is arranged between the first inner ring wall and the second inner ring wall.

43. An axial flux motor according to claim 41 or 42, characterized in that: The shell has a third cooling interface connected to the liquid inlet pipeline and a fourth cooling interface connected to the liquid outlet pipeline. The third cooling interface and the fourth cooling interface are connected to the cooling cavity. The height of the third cooling interface is smaller than the height of the fourth cooling interface.

44. The axial flux motor of claim 43, wherein: The third cooling interface is opened at the bottom of the shell, and the fourth cooling interface is opened at the top of the shell.

45. An axial flux motor according to any one of claims 1 to 44, characterized in that: The cavity wall of the first cavity is provided with a through hole.

46. ​​The axial flux motor of claim 45, wherein: The number of the through holes is plural, and the plurality of through holes are arranged along the circumferential direction of the rotor body.

47. An axial flux motor according to any one of claims 1 to 46, characterized in that: The number of the stators is two, and the rotor is arranged between the two stators.

48. An electric drive device, characterized in that: The electric drive device comprises an axial flux motor as described in any one of claims 1-47.

49. An electric drive system, characterized in that: The electric drive system includes a battery and the electric drive device as claimed in claim 48, and the battery is electrically connected to the electric drive device.

50. An electric device, characterized in that: The electric device includes the electric drive system as claimed in claim 49.

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