Side-opening multilayer axial flux motor

Abstract

The invention relates to the technical field of motors, and discloses a side-opening multilayer axial flux motor which comprises a shell assembly, a stator assembly, a rotor assembly and a heat dissipation assembly. The housing assembly of the motor adopts a butt joint structure which is symmetrically arranged up and down, so that the disassembly and assembly difficulty is reduced to a great extent; and meanwhile, a stator mounting groove of the stator assembly and a mounting gap of the rotor assembly are defined in the shell assembly. The number of the stator assemblies and the number of the rotor assemblies can be flexibly designed and adjusted according to different application scenes, multi-layer stacking of the stator and the rotor can be achieved through one-time mold opening of equipment, compared with an existing motor, flexibility and applicability can be greatly improved, the motor can be arranged to be a synchronous motor, an asynchronous motor, a hybrid motor and other types according to requirements, and the motor is suitable for large-scale popularization and application. The multi-layer stacked stator and rotor structure can make full use of magnetic induction lines generated by the electromagnets on the two sides, a large magnetic path is formed, then the power is enhanced, the motor response is faster, the torque is larger, the overall structure is compact, and the size is small.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a side-opening multi-layer axial flux motor. Background Art

[0002] Electric motors are a common power source, widely used in vehicles, industry, and other fields. With the rapid advancement of technology, the performance requirements for electric motors in various fields are becoming increasingly stringent, requiring motors with small size and high power density. However, commercially available motors struggle to meet these requirements. Furthermore, existing motors suffer from difficulties in disassembling and assembling the stator and rotor, and the inability to flexibly adjust the number of stators and rotors, resulting in poor applicability.

[0003] In view of this, how to provide a motor with small size, high power, convenient stator and rotor disassembly and improved applicability is an urgent problem that needs to be solved by those skilled in the art. Summary of the Invention

[0004] The purpose of the present invention is to provide a side-opening multi-layer axial flux motor to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the present invention provides a side-opening multi-layer axial flux motor, comprising: a housing assembly, a stator assembly, and a rotor assembly, wherein the housing assembly comprises:

[0006] Two semicircular housing assemblies are symmetrically arranged in a vertical direction and can be connected to form a cylindrical motor housing. The inner surface of the semicircular housing assembly defines a plurality of stator mounting slots, and the stator assembly is disposed in the stator mounting slots. The plurality of stator mounting slots are spaced apart along the length of the semicircular housing assembly, and a rotor mounting gap is formed between adjacent stator mounting slots. The rotor assembly is disposed in the rotor mounting gap and spaced apart from the stator assembly. The rotor assembly is keyed to a rotating shaft, and a through hole is defined in the middle of the stator assembly for passage of the rotating shaft.

[0007] Two semicircular bearing assemblies are arranged symmetrically up and down and can be docked to form a bearing fixing seat. The bearing fixing seat is coaxially arranged with the motor housing, and the outer edge of the bearing fixing seat is fixed to the front end or rear end of the motor housing; a bearing is arranged in the bearing fixing seat, and the rotating shaft is rotatably connected to the bearing.

[0008] Furthermore, the semicircular bearing assembly includes:

[0009] Two semicircular bearing sleeves are installed on the semicircular fixing plate. The two groups of semicircular bearing sleeves and the semicircular fixing plate are symmetrically arranged up and down and can be connected to form a bearing fixing seat. The outer edge of the semicircular fixing plate is fixed to the front end or rear end of the motor housing.

[0010] Furthermore, the shell assembly also includes: a shell fixing ring, the outer surface of the semicircular shell component is provided with multiple reinforcing ribs, the shell fixing ring covers the outer end surface of the semicircular fixing plate and is fixedly connected to the reinforcing ribs.

[0011] Furthermore, the semicircular housing component is provided with a plurality of slots through the inner and outer surfaces, the slots are arranged in a one-to-one correspondence with the stator mounting slots, and the stator assembly is installed in the stator mounting slots and the slots.

[0012] Furthermore, the stator assembly includes:

[0013] Two stator housing assemblies are arranged in a front-to-back correspondence and can be docked to form a stator housing and form a stator mounting chamber in the stator housing;

[0014] A stator core fixing frame is arranged in the stator installation chamber, and defines a plurality of core installation holes therein. The stator core is arranged in the core installation holes, and a stator coil is provided on the outer surface of the stator core.

[0015] a first stator fixing housing, arranged on the front side of the stator housing;

[0016] a second stator fixed housing, disposed at the rear side of the stator housing, wherein the first stator fixed housing and the second stator fixed housing can be butted together to form a stator fixed housing, and the stator housing is clamped between the first stator fixed housing and the second stator fixed housing;

[0017] The upper end of the stator housing extends upward to form an oil cooling and heat dissipation channel, and the oil cooling and heat dissipation channel is connected to the stator mounting chamber; the lower end of the stator housing extends downward to form a line channel, and the stator fixed shell is provided with a first channel opening corresponding to the oil cooling and heat dissipation channel, and a second channel opening corresponding to the line channel; the stator fixed shell is installed in the stator mounting slot, and the oil cooling and heat dissipation channel and the line channel are respectively installed in the slot openings.

[0018] Furthermore, a sealing assembly is provided in the middle of each of the first stator fixed housing and the second stator fixed housing, and the middle of the sealing assembly has a through hole for the rotation shaft to pass through; when the first stator fixed housing and the second stator fixed housing are docked, an annular, sealed stator installation chamber is formed between the sealing assembly and the inner side wall of the stator fixed shell; and an oil inlet channel and an oil outlet channel connected to the stator installation chamber are provided in the oil cooling heat dissipation channel.

[0019] Furthermore, it also includes: a heat dissipation assembly, the heat dissipation assembly including:

[0020] An oil-cooled heat sink is arranged on the motor housing through a heat dissipation fixing frame; the oil inlet pipeline of the oil-cooled heat sink is connected to the oil outlet channel, and the oil outlet pipeline of the oil-cooled heat sink is connected to the oil inlet channel, and an oil-cooled pump body is provided on the oil inlet pipeline or the oil outlet pipeline.

[0021] Furthermore, the heat dissipation assembly further includes:

[0022] A fan is connected to the rotating shaft in a transmission manner, and an air outlet end of the fan corresponds to the oil cooling fin.

[0023] Furthermore, a stator sealing ring adapted to the inner diameter of the through hole is provided in the through hole in the middle of the sealing assembly.

[0024] Furthermore, the rotor assembly includes:

[0025] The rotor disc is arranged in the rotor installation gap and is keyed to the shaft;

[0026] A strong magnet is installed in a magnet fixing housing. The rotor disc is provided with a plurality of magnet mounting holes along the circumference, and the magnet fixing housing is installed in the magnet mounting holes.

[0027] The rotor fixing flanges are arranged on the front and rear end surfaces of the rotor disc, wherein one of the rotor fixing flanges is connected to the fixing pipe, and the rotor fixing flange is keyed to the rotating shaft.

[0028] The present invention discloses the following technical effects:

[0029] 1. The motor's housing assembly adopts a docking structure that is symmetrically arranged up and down. Compared with the existing cylindrical motor housing, it greatly reduces the difficulty of disassembly and assembly. At the same time, the stator mounting slot of the stator assembly and the installation gap of the rotor assembly are defined in the housing assembly. The number of stator assemblies and rotor assemblies can be flexibly designed and adjusted according to different application scenarios. The equipment can achieve multi-layer stacking of stators and rotors in one mold. Compared with existing motors, it can greatly improve flexibility and applicability. The multi-layer stacked stator and rotor structure can make full use of the magnetic flux lines generated by the electromagnet on both sides and form a large magnetic path, thereby enhancing power, making the motor respond faster and having greater torque. The overall structure is compact and small in size, which can meet the performance requirements of motors in various fields.

[0030] 2. Both the stator assembly and the rotor assembly adopt a modular structure. The types of stator and rotor assemblies can be flexibly designed according to the application scenario. Different types of stators and rotors (such as axial asynchronous motor rotors and axial permanent magnet synchronous motor rotors) can be installed in different stator mounting slots and mounting gaps to form different types of axial multi-layer stator and rotor structures, thereby forming an axial hybrid motor, further improving the flexibility and applicability of the motor.

[0031] 3. The heat dissipation assembly includes an oil-cooling part and an air-cooling part. The installation position of the heat dissipation assembly is not limited and can be flexibly set on the motor housing of the housing assembly. As long as the oil inlet and oil outlet pipes of the oil-cooling heat sink are connected to the oil outlet channel and the oil inlet channel respectively, the design range of the motor shape can be expanded, and it can also be adapted to scenarios with higher installation space requirements.

[0032] 4. The housing assembly, stator assembly, rotor assembly and heat dissipation assembly in the motor all adopt a modular structure. They can be produced independently during the production process, reducing production costs. In addition, they can also improve the disassembly and assembly efficiency and overall operation and maintenance efficiency during the later operation and maintenance process. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 It is a schematic diagram of the structure of the present invention;

[0035] Figure 2 This is an exploded schematic diagram of the structure of the present invention;

[0036] Figure 3 Schematic diagram of the housing assembly;

[0037] Figure 4 This is an exploded schematic diagram of the housing assembly;

[0038] Figure 5 This is a structural diagram of the integrated semicircular housing assembly and the semicircular bearing assembly;

[0039] Figure 6 It is a schematic diagram of the assembly of the semicircular housing assembly and the semicircular bearing assembly;

[0040] Figure 7 Schematic diagram of the outer shell fixing ring;

[0041] Figure 8 Schematic diagram of the back screw holes;

[0042] Figure 9 Schematic diagram of the stator assembly;

[0043] Figure 10 This is an exploded diagram of the stator assembly (one of the stator cores and stator coils is disassembled);

[0044] Figure 11 Schematic diagram of the docking between the first stator fixed housing and the second stator fixed housing;

[0045] Figure 12 is a schematic diagram of the stator housing assembly;

[0046] Figure 13 Schematic diagram of stator housing assembly;

[0047] Figure 14 Schematic diagram of the stator core fixing frame, stator core and stator coil;

[0048] Figure 15 Schematic diagram of the stator core fixing frame, stator core and stator coil assembled into a yokeless stator;

[0049] Figure 16 A schematic diagram of the connection protrusions of the two stator housing assembly structures;

[0050] Figure 17 Schematic diagram of the connection groove of the yoke stator;

[0051] Figure 18 Schematic diagram of the stator assembly for installing a conventional yoke stator without connecting to the oil cooling fins;

[0052] Figure 19 A schematic diagram of a ring-shaped fixing structure with a protrusion provided for the stator housing assembly;

[0053] Figure 20 Schematic diagram of a yoke stator;

[0054] Figure 21 Schematic diagram of the rotor assembly;

[0055] Figure 22 This is a schematic diagram of the rotor assembly explosion (one of the strong magnets and the magnet fixing housing is disassembled);

[0056] Figure 23 This is a schematic diagram of the cooperation between the strong magnet and the magnet fixing housing;

[0057] Figure 24 This is a diagram of the heat dissipation assembly installation (excluding the heat dissipation protective shell);

[0058] Figure 25 This is a schematic diagram of the heat dissipation assembly;

[0059] Among them, 1. housing assembly; 101. semicircular housing assembly; 1011. stator mounting slot; 1012. notch; 102. semicircular bearing assembly; 1021. semicircular bearing sleeve; 1022. semicircular fixing plate; 103. housing fixing ring; 104. reinforcing rib;

[0060] 2. Stator assembly; 201. Stator housing assembly; 2011. Ring-shaped fixing structure;

[0061] 202, stator core fixing frame; 203, stator core; 204, stator coil; 205, first stator fixing housing; 206, second stator fixing housing; 207, oil cooling channel; 2071, oil inlet channel; 2072, oil outlet channel; 208, line channel; 209, sealing assembly; 2010, stator sealing ring;

[0062] 3. Rotor assembly; 301. Rotor disc; 302. Strong magnet; 303. Magnet fixing housing; 304. Rotor fixing flange; 305. Fixing tube;

[0063] 4. Rotating shaft;

[0064] 5. Heat dissipation assembly; 501. Oil cooling fin; 502. Heat dissipation bracket; 503. Oil inlet pipe; 504. Oil outlet pipe; 505. Oil cooling pump body; 506. Fan; 507. Heat dissipation protective shell;

[0065] 6. U-shaped stator; 7. Semicircular stator. DETAILED DESCRIPTION

[0066] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0067] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0068] like Figure 1-Figure 25 As shown, an embodiment of the present invention provides a side-opening multi-layer axial flux motor, comprising: a housing assembly 1, a stator assembly 2 and a rotor assembly 3, wherein the housing assembly 1 comprises:

[0069] Two semicircular housing assemblies 101 are symmetrically arranged in a vertical direction and can be connected to form a cylindrical motor housing. The inner surface of the semicircular housing assembly 101 defines a plurality of stator mounting slots 1011, and the stator assembly 2 is disposed in the stator mounting slots 1011. The plurality of stator mounting slots 1011 are spaced apart along the length of the semicircular housing assembly 101, and a rotor mounting gap is formed between adjacent stator mounting slots 1011. The rotor assembly 3 is disposed in the rotor mounting gap and spaced apart from the stator assembly 2. The rotor assembly 3 is keyed to the rotating shaft 4. The central portion of the stator assembly 2 has a through hole for the rotating shaft 4 to pass through.

[0070] Two semicircular bearing assemblies 102 are arranged symmetrically up and down and can be docked to form a bearing fixing seat. The bearing fixing seat is coaxially arranged with the motor housing, and the outer edge of the bearing fixing seat is fixed to the front end or rear end of the motor housing; a bearing is arranged in the bearing fixing seat, and the rotating shaft 4 is rotatably connected to the bearing.

[0071] In this embodiment, the semicircular bearing assembly 102 includes:

[0072] Two semicircular bearing sleeves 1021 are installed on the semicircular fixing plate 1022 (the semicircular bearing sleeves 1021 are located on the inner side of the semicircular fixing plate 1022). The two sets of semicircular bearing sleeves 1021 and the semicircular fixing plate 1022 are arranged symmetrically up and down and can be connected to form a bearing fixing seat. The outer edge of the semicircular fixing plate 1022 is fixed at the front end or rear end of the motor housing.

[0073] like Figure 5 As shown, in some other embodiments, the semicircular bearing assembly 102 can also be set integrally with the semicircular housing assembly 101. During production, the integrated structure of the semicircular housing assembly 101 and the semicircular bearing assembly 102 can be obtained by opening the mold once, which speeds up production efficiency, reduces production costs and shortens assembly time.

[0074] In this embodiment, the housing assembly 1 also includes: a housing fixing ring 103, and a plurality of reinforcing ribs 104 are provided on the outer surface of the semicircular housing component 101. The housing fixing ring 103 covers the outer end surface of the semicircular fixing plate 1022 and is fixedly connected to the reinforcing ribs 104. The reinforcing ribs 104 are used to increase the structural strength of the motor housing.

[0075] In this embodiment, the housing assembly 1 includes multiple docking structures, such as the aforementioned semicircular housing assembly 101 and semicircular bearing assembly 102. When docked, the corresponding structures can be secured using screws or threaded holes (disposed at appropriate locations within the housing assembly 1, with no specific limitation on the specific locations). In other embodiments, a snap-fit ​​connection method or other connection method that facilitates assembly and disassembly can also be employed. Each of the docking structures described below utilizes a similar docking method and mechanism as the housing assembly 1 and will not be further described here.

[0076] like Figure 1 、 Figure 6 and Figure 8As shown, in this embodiment, a plurality of notches 1012 are formed through the inner and outer surfaces of the semicircular housing assembly 101. The notches 1012 are arranged in a one-to-one correspondence with the stator mounting slots 1011. The stator assembly 2 is mounted within the stator mounting slots 1011 and the notches 1012. The mounting slots 1011 are recessed downward relative to the semicircular housing assembly 101. The number of mounting slots 1011 corresponds to the number of stator assemblies 2. The recessed mounting slots 1011 serve to secure the stator assembly 2. Back screw holes are provided on the exterior of the semicircular housing assembly 101 at positions corresponding to the mounting slots 1011. The back screw holes extend to the mounting slots 1011 for securing the stator assembly 2.

[0077] In this embodiment, the stator assembly 2 includes:

[0078] Two stator housing assemblies 201 are arranged in a front-to-back correspondence and can be connected to form a stator housing and a stator installation chamber is formed in the stator housing;

[0079] The stator core fixing frame 202 is arranged in the stator installation chamber, and a plurality of core installation holes are defined in the stator core 203. The stator core 203 is arranged in the core installation holes. The stator coil 204 is arranged on the outer surface of the stator core 203 (the stator core 203, the stator coil 204 and the stator core fixing member 202 together constitute a yokeless stator). Figure 14 shown);

[0080] A first stator fixed housing 205 is provided on the front side of the stator housing;

[0081] The second stator fixed housing 206 is provided at the rear side of the stator housing. The first stator fixed housing 205 and the second stator fixed housing 206 can be connected to form a stator fixed housing, and the stator housing is clamped between the first stator fixed housing 205 and the second stator fixed housing 206;

[0082] The upper end of the stator housing extends upward to form an oil cooling and heat dissipation channel 207, which is connected to the stator mounting chamber; the lower end of the stator housing extends downward to form a line channel 208, and the stator fixed shell is provided with a first channel opening corresponding to the oil cooling and heat dissipation channel 207, and a second channel opening corresponding to the line channel 208; the stator fixed shell is installed in the stator mounting slot 1011, and the oil cooling and heat dissipation channel 207 and the line channel 208 are respectively installed in the slot 1012.

[0083] like Figure 9 As shown, in this embodiment, the stator fixing housing is provided with stator assembly mounting screw holes ( Figure 9The stator assembly 2 can be fixed in the mounting groove 1011 through the stator assembly mounting screw hole and the back screw hole. The specific setting position of the mounting groove 1011, the stator assembly mounting screw hole and the position of the back screw hole can be flexibly adjusted according to actual conditions.

[0084] In this embodiment, a sealing assembly 209 is provided in the middle of each of the first stator fixed housing 205 and the second stator fixed housing 206. The middle of the sealing assembly 209 has a through hole for the rotation shaft 4 to pass through. When the first stator fixed housing 205 and the second stator fixed housing 206 are docked, an annular, sealed stator installation chamber is formed between the sealing assembly 209 and the inner side wall of the stator fixed housing. An oil inlet channel 2071 and an oil outlet channel 2072 connected to the stator installation chamber are provided in the oil cooling channel 207.

[0085] In this embodiment, the heat dissipation assembly 5 is further included. The heat dissipation assembly 5 includes:

[0086] The oil-cooling heat sink 501 is mounted on the motor housing via a heat sink mounting bracket 502. The oil inlet pipe 503 of the oil-cooling heat sink 501 communicates with the oil outlet channel 2072, while the oil outlet pipe 504 of the oil-cooling heat sink 501 communicates with the oil inlet channel 2071. An oil cooling pump 505 is mounted on either the oil inlet pipe 503 or the oil outlet pipe 504. The specific placement of the oil-cooling heat sink 501 and its connecting pipes is not limited; as long as the oil inlet pipe 503 of the oil-cooling heat sink 501 communicates with the oil outlet channel 2072, and the oil outlet pipe 504 of the oil-cooling heat sink 501 communicates with the oil inlet channel 2071, it suffices. In other embodiments, the heat sink assembly 5 and the motor housing may be separately mounted.

[0087] In this embodiment, the heat dissipation assembly 5 further includes:

[0088] The fan 506 is in driving connection with the rotating shaft 4 , and the air outlet end of the fan 506 corresponds to the oil cooling fin 501 .

[0089] In this embodiment, the oil-cooling heat sink 501 and the fan 506 are arranged at the rear end of the motor housing, and the fan 506 is located at the rear end of the oil-cooling heat sink 501. The rotating shaft 4 seals and passes through part of the oil-cooling heat sink 501 (without affecting the normal use of the oil-cooling heat sink 501) and is transmission-connected to the fan 506. The oil-cooling heat sink 501 and the fan 506 are externally covered with a hollow heat dissipation protective shell 507, and the heat dissipation protective shell 507 is connected to the motor housing.

[0090] In this embodiment, the oil-cooling pump body 505 is also connected to an oil cooling chamber for adding or replacing cooling oil. The cooling oil flows along the following path: oil-cooling pump body 505 - oil outlet line 504 - oil inlet channel 2071 - oil outlet channel 2072 - oil inlet line 503 - heat sink - oil-cooling pump body 505.

[0091] In this embodiment, a stator sealing ring 2010 matching the inner diameter of the through-hole in the middle of the sealing assembly 209 is disposed within the through-hole. The stator sealing ring 2010 does not provide sealing, but rather supports and limits the sealing assembly 209, preventing vibration and displacement of the sealing assembly 209. Sealing measures such as sealing rings and sealant may be disposed outside the sealing assembly 209 of the first stator stationary housing 205 and the second stator stationary housing 206. Such sealing measures may also be disposed between the stator housing and the stator stationary housing.

[0092] like Figure 13 As shown, in some other embodiments, the stator mounting chamber within the stator housing can also be installed with a traditional yoke stator and can be unconnected to the oil-cooled heat sink 501. In this case, the oil-cooled heat dissipation channel 207 serves only as a connector for the stator assembly 2 to be mounted in the slot 1012. Since this structure does not include oil cooling, the sealing assembly 209 does not need to be provided in the middle of the first stator fixed housing 205 and the second stator fixed housing 206. The stator housing can also be provided with heat dissipation holes through the front and rear surfaces, exposing the internal stator core 203 and stator coil 204 to facilitate heat dissipation through the heat dissipation holes. In addition, the motor can also be provided with various heat dissipation structures used in existing motors, without using the above-mentioned heat dissipation assembly 5.

[0093] like Figure 12 and Figure 16 As shown, in this embodiment, connecting protrusions are provided inside the two stator housing components 201. Figure 17 As shown, both the conventional yoke stator and the above-mentioned yokeless stator are provided with connecting grooves, and the conventional yoke stator and the above-mentioned yokeless stator can be installed in two stator housing assemblies 201 through connecting protrusions and connecting grooves.

[0094] like Figure 20 As shown, in some other embodiments, the conventional ordinary yoke stator can be transformed into a U-shaped stator 6 and a semicircular stator 7. The conventional stator after the transformation can be fixed to the two stator housing components 201 in a low-cost manner, such as Figure 19 As shown, a protruding annular fixing structure 2011 can be installed on the stator housing assembly 201 (the original oil cooling channel 207 and line channel 208 are removed and the annular fixing structure 2011 is installed in place). The stator housing assembly 201 is then welded to the conventional stator. The annular fixing structure 2011 is then clipped onto the housing and secured with screws. This installation method can greatly increase the speed of stator installation and reduce installation costs.

[0095] In this embodiment, the rotor assembly 3 includes:

[0096] The rotor disc 301 is arranged in the rotor installation gap and is key-connected to the rotating shaft 4;

[0097] The strong magnet 302 is installed in the magnet fixing housing 303. The rotor disk 301 is provided with a plurality of magnet mounting holes along the circumference, and the magnet fixing housing 303 is installed in the magnet mounting holes;

[0098] The rotor fixing flanges 304 are arranged on the front and rear end surfaces of the rotor disc 301 , wherein one of the rotor fixing flanges 304 is connected to the fixing pipe 305 , and the rotor fixing flange 304 is key-connected to the rotating shaft 4 .

[0099] In this embodiment, the magnet fixing housing 303 is composed of two parts, and also adopts a docking fixing structure, which fully wraps the strong magnet 302 inside, enhances the structural strength, and prevents the strong magnet 302 from vibration damage caused by long-term operation.

[0100] In this embodiment, the function of the fixing tube 305 is to define the distance between different rotor assemblies 3 .

[0101] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying 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 limiting the present invention.

[0102] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by persons skilled in the art should fall within the scope of protection defined by the claims of the present invention.

Claims

1. A side-opening multi-layer axial flux motor, characterized in that: include: A housing assembly (1), a stator assembly (2) and a rotor assembly (3), wherein the housing assembly (1) comprises: Two semicircular housing components (101) are symmetrically arranged in an upper and lower direction and can be connected to form a cylindrical motor housing. The inner surface of the semicircular housing component (101) defines a plurality of stator mounting grooves (1011), and the stator assembly (2) is arranged in the stator mounting grooves (1011); the plurality of stator mounting grooves (1011) are spaced apart along the length direction of the semicircular housing component (101), and a rotor mounting gap is formed between adjacent stator mounting grooves (1011). The rotor assembly (3) is arranged in the rotor mounting gap and spaced apart from the stator assembly (2). The rotor assembly (3) is key-connected to a rotating shaft (4), and a through hole for the rotating shaft (4) to pass through is provided in the middle of the stator assembly (2); Two semicircular bearing assemblies (102) are symmetrically arranged up and down and can be butted together to form a bearing fixing seat, the bearing fixing seat is coaxially arranged with the motor housing, and the outer edge of the bearing fixing seat is fixed to the front end or the rear end of the motor housing; a bearing is arranged in the bearing fixing seat, and the rotating shaft (4) is rotatably connected to the bearing.

2. The side-opening multi-layer axial flux motor according to claim 1, characterized in that: The semicircular bearing assembly (102) comprises: Two semicircular bearing sleeves (1021) are mounted on a semicircular fixing plate (1022). The two groups of semicircular bearing sleeves (1021) and the semicircular fixing plate (1022) are symmetrically arranged up and down and can be butted together to form a bearing fixing seat. The outer edge of the semicircular fixing plate (1022) is fixed to the front end or the rear end of the motor housing.

3. The side-opening multi-layer axial flux motor according to claim 2, characterized in that: The housing assembly (1) further comprises: a housing fixing ring (103); a plurality of reinforcing ribs (104) are provided on the outer surface of the semicircular housing component (101); the housing fixing ring (103) covers the outer end surface of the semicircular fixing plate (1022) and is fixedly connected to the reinforcing ribs (104).

4. A side-opening multi-layer axial flux motor according to any one of claims 1 to 3, characterized in that: The semicircular housing component (101) is provided with a plurality of notches (1012) through the inner and outer surfaces, the notches (1012) being arranged in a one-to-one correspondence with the stator mounting slots (1011), and the stator assembly (2) being installed in the stator mounting slots (1011) and the notches (1012).

5. The side-opening multi-layer axial flux motor according to claim 4, characterized in that: The stator assembly (2) comprises: Two stator housing assemblies (201) are arranged in a front-to-back correspondence and can be butted together to form a stator housing and a stator installation chamber within the stator housing; A stator core fixing frame (202) is arranged in the stator installation chamber, and defines a plurality of core installation holes therein. The stator core (203) is arranged in the core installation holes, and a stator coil (204) is provided on the outer surface of the stator core (203); A first stator fixing housing (205) is provided on the front side of the stator housing; A second stator fixed housing (206) is provided at the rear side of the stator housing, the first stator fixed housing (205) and the second stator fixed housing (206) can be butted together to form a stator fixed housing, and the stator housing is clamped between the first stator fixed housing (205) and the second stator fixed housing (206); The upper end of the stator housing extends upward to form an oil cooling and heat dissipation channel (207), and the oil cooling and heat dissipation channel (207) is communicated with the stator installation chamber; the lower end of the stator housing extends downward to form a line channel (208), and the stator fixed housing is provided with a first channel opening corresponding to the oil cooling and heat dissipation channel (207), and a second channel opening corresponding to the line channel (208); the stator fixed housing is installed in the stator installation slot (1011), and the oil cooling and heat dissipation channel (207) and the line channel (208) are respectively installed in the slot opening (1012).

6. The side-opening multi-layer axial flux motor according to claim 5, characterized in that: The middle of each of the first stator fixed housing (205) and the second stator fixed housing (206) is provided with a sealing assembly (209), and the middle of the sealing assembly (209) has a through hole for the rotation shaft (4) to pass through; when the first stator fixed housing (205) and the second stator fixed housing (206) are docked, an annular, sealed stator installation chamber is formed between the sealing assembly (209) and the inner side wall of the stator fixed housing; and an oil inlet channel (2071) and an oil outlet channel (2072) that are connected to the stator installation chamber are provided in the oil cooling and heat dissipation channel (207).

7. The side-opening multi-layer axial flux motor according to claim 6, characterized in that: Also includes: A heat dissipation assembly (5), comprising: An oil cooling fin (501) is arranged on the motor housing via a heat dissipation fixing frame (502); The oil inlet pipeline (503) of the oil cooling fin (501) is in communication with the oil outlet channel (2072), the oil outlet pipeline (504) of the oil cooling fin (501) is in communication with the oil inlet channel (2071), and an oil cooling pump body (505) is provided on the oil inlet pipeline (503) or the oil outlet pipeline (504).

8. The side-opening multi-layer axial flux motor according to claim 7, characterized in that: The heat dissipation assembly (5) further comprises: A fan (506) is connected to the rotating shaft (4) in a transmission manner, and an air outlet end of the fan (506) corresponds to the oil cooling fin (501).

9. The side-opening multi-layer axial flux motor according to claim 6, characterized in that: A stator sealing ring (2010) adapted to the inner diameter of the through hole is provided in the through hole in the middle of the sealing assembly (209).

10. The side-opening multi-layer axial flux motor according to claim 5, characterized in that: The rotor assembly (3) comprises: A rotor disc (301) is disposed in the rotor installation gap and is key-connected to the rotating shaft (4); A strong magnet (302) is installed in a magnet fixing housing (303); the rotor disc (301) is provided with a plurality of magnet mounting holes along the circumferential direction; the magnet fixing housing (303) is installed in the magnet mounting holes; The rotor fixing flanges (304) are arranged on the front and rear end surfaces of the rotor disc (301), wherein one rotor fixing flange (304) is connected to the fixing pipe (305), and the rotor fixing flange (304) is key-connected to the rotating shaft (4).

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