CN216489939U - Stator assembly, motor stator and axial flux motor - Google Patents
Stator assembly, motor stator and axial flux motor Download PDFInfo
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- CN216489939U CN216489939U CN202122986740.5U CN202122986740U CN216489939U CN 216489939 U CN216489939 U CN 216489939U CN 202122986740 U CN202122986740 U CN 202122986740U CN 216489939 U CN216489939 U CN 216489939U
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Abstract
The utility model discloses a stator assembly, a motor stator and an axial flux motor, belonging to the technical field of motors, wherein the stator assembly comprises a stator pressing plate, a stator core and a sealing body, wherein the center of the stator pressing plate is fixedly provided with a cylinder, the stator pressing plate is provided with a plurality of core holes penetrating through two sides of the stator pressing plate, and the plurality of core holes are arranged around the cylinder; the number of the stator cores is multiple, the plurality of stator cores correspond to the plurality of iron core holes one by one, and the stator cores are arranged in the iron core holes corresponding to the stator cores; the sealing body is injection-molded between the stator pressing plates and the plurality of stator cores and seals a plurality of gaps between the stator cores and the stator pressing plates. According to the stator assembly, the motor stator and the axial flux motor, the stator assembly and the motor stator have good sealing performance, and the performance of the axial flux motor cannot be influenced.
Description
Technical Field
The utility model relates to the technical field of motors, in particular to a stator assembly, a motor stator and an axial flux motor.
Background
An axial flux motor stator generally includes a front stator pressing plate, a rear stator pressing plate, a housing, a front stator core, a rear stator core, and a coil assembly. Each axial flux motor stator comprises a plurality of front stator cores and a plurality of rear stator cores, the front stator cores are respectively installed on the front stator pressing plate, and the rear stator cores are respectively installed on the rear stator pressing plate.
Every front stator core needs to cooperate with the front stator clamp plate, forms a plurality of fitting surfaces, and similarly, back stator core needs to cooperate with back stator clamp plate, forms a plurality of fitting surfaces, when the design installation, needs to solve the sealed problem of a plurality of fitting surfaces. In the prior art, in order to ensure the sealing performance of the stator of the axial flux motor, hole structures are not arranged on the front stator pressing plate and the rear stator pressing plate, the front stator iron core is matched with a groove in the front stator pressing plate, and the rear stator iron core is matched with a groove in the rear stator pressing plate. The front stator pressing plate and the rear stator pressing plate are not provided with holes, and when the axial flux motor is designed, the clearance between the stator and the rotor of the axial flux motor needs to be larger than the sum of interference safety distances between the stator pressing plate (the front stator pressing plate or the rear stator pressing plate) and the stator and the rotor. And the vehicle motor has compact structure, the air gap is generally below 2 mm, the stator pressing plate needs to ensure the basic strength of the structure, the minimum thickness of the stator pressing plate is often larger than the optimal value of the air gap of the motor, and the motor cannot exert the optimal performance.
Therefore, the stator assembly, the motor stator and the axial flux motor which can ensure the sealing performance of the stator of the axial flux motor and cannot influence the performance of the motor are continuously designed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a stator assembly, a motor stator and an axial flux motor, wherein the stator assembly has better sealing performance and cannot influence the performance of the axial flux motor.
As the conception, the technical scheme adopted by the utility model is as follows:
a stator assembly, comprising:
the stator pressing plate is fixedly provided with a cylinder at the center and is provided with a plurality of iron core holes penetrating through two sides of the stator pressing plate, and the iron core holes are arranged around the cylinder;
the stator cores are arranged and correspond to the iron core holes one by one, and the stator cores are arranged in the iron core holes corresponding to the stator cores;
the sealing body is injection-molded between the stator pressing plates and the plurality of stator cores and seals a plurality of gaps between the stator cores and the stator pressing plates.
Optionally, the sealing body is provided with a first through hole and a plurality of second through holes, the sealing body is sleeved on the column body through the first through hole, the plurality of second through holes correspond to the plurality of stator cores one to one, and the stator cores penetrate through the second through holes corresponding to the stator cores.
Optionally, the shape of the second through hole is the same as that of the stator core, and the size of the second through hole is matched with that of the stator core.
Optionally, the sealing body is of a circular sheet structure, the outer contour of the stator pressing plate is circular, and the diameter of the outer contour of the sealing body is smaller than that of the outer contour of the stator pressing plate.
Optionally, the hole wall of the iron core hole is provided with an iron core positioning lug, the stator iron core is provided with a positioning groove matched with the iron core positioning lug, and the iron core positioning lug can be clamped in the positioning groove.
Optionally, the iron core hole is provided with iron core positioning projections along two radial hole walls of the stator pressing plate, and two ends of the stator iron core are provided with positioning grooves respectively.
A motor stator comprises a coil assembly, a shell and two stator assemblies as above;
two the stator core one-to-one of stator assembly connects, the coil assembly includes a plurality of coils, and every coil is around locating two of connecting outside the stator core, the casing is hollow tube-shape, just the terminal surface rigid coupling of casing one end in one the stator clamp plate of stator assembly, the terminal surface rigid coupling of the casing other end in another the stator clamp plate of stator assembly, stator core reaches the coil is located by casing and two in the installation cavity that stator clamp plate formed.
Optionally, the housing has a liquid inlet and a liquid outlet, a first cooling channel communicated with the liquid inlet and the liquid outlet is formed between the housing and the coils, a second cooling channel communicated with the first cooling channel is formed between two adjacent coils, and a third cooling channel communicated with the second cooling channel is formed between the coil and the column.
Optionally, the housing includes a first flange, a second flange, and a housing body connected between the first flange and the second flange, the first flange is connected to one of the stator pressing plates in a sealing manner, and the second flange is connected to the other of the stator pressing plates in a sealing manner.
An axial flux electric machine comprising a machine stator as claimed in any preceding claim.
The utility model has at least the following beneficial effects:
according to the stator assembly, the motor stator and the axial flux motor, the sealing body is arranged at the connecting position of the stator iron core and the stator pressing plate, so that the sealing body seals a gap between the stator iron core and the stator pressing plate, the problem of sealing of a matching surface between the stator iron core and the stator pressing plate is solved, the stator iron core is fixed on the stator pressing plate through the iron core hole, the structure of the stator assembly cannot influence the performance of the axial flux motor, and the effect that the performance of the axial flux motor is not influenced on the basis of ensuring the sealing performance of the stator assembly is achieved.
Drawings
Fig. 1 is a schematic structural diagram of a stator assembly according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a stator assembly provided in accordance with an embodiment of the present invention;
FIG. 3 is an exploded view of a stator assembly according to one embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a stator pressing plate according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a sealing body according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a stator core according to an embodiment of the present invention;
fig. 7 is a side view of a stator core according to a first embodiment of the present invention;
fig. 8 is a schematic structural diagram of a stator of an electric motor according to a second embodiment of the present invention;
fig. 9 is an exploded schematic view of a stator of an electric motor according to a second embodiment of the present invention;
fig. 10 is a schematic cross-sectional view of a stator of an electric machine according to a second embodiment of the present invention;
fig. 11 is a schematic structural diagram of a housing according to a second embodiment of the present invention;
fig. 12 is a schematic partial cross-sectional view of a stator of an electric machine according to a second embodiment of the present invention;
FIG. 13 is an enlarged view of the point A shown in FIG. 12 according to a second embodiment of the present invention;
fig. 14 is a schematic cross-sectional view of a stator of an electric machine according to a second embodiment of the present invention.
In the figure:
1. a stator pressing plate; 11. a cylinder; 12. an iron core hole; 13. an iron core positioning lug;
2. a stator core; 21. positioning a groove;
3. a seal body; 31. a first through hole; 32. a second through hole;
10. a coil assembly; 101. a coil; 20. a housing; 201. a liquid inlet; 202. a liquid outlet; 203. a first flange; 204. a second flange; 205. a housing body; 30. a stator assembly;
401. a first cooling channel; 402. a second cooling channel; 403. a third cooling channel.
Detailed Description
In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
Example one
The embodiment provides a stator assembly which has good sealing performance and cannot influence the performance of an axial flux motor. The stator assembly can be applied to a motor stator, and the electronic stator can be applied to an axial flux motor or other motors.
As shown in fig. 1, the stator assembly 30 includes a stator pressing plate 1, a stator core 2, and a sealing body 3. Wherein, the cylinder 11 is fixedly arranged at the center of one side of the stator pressing plate 1, the cylinder 11 is a hollow cylinder, and the stator pressing plate 1 has a hole structure communicated with the cylinder 11, in some embodiments, the stator pressing plate 1 and the cylinder 11 are integrally formed. The stator pressing plate 1 has a plurality of core holes 12 penetrating both sides thereof, and the core holes 12 and the column 11 are located on the same side of the stator pressing plate 1. A plurality of core holes 12 are provided around the cylinder 11, and specifically, the plurality of core holes 12 are provided at intervals.
As shown in fig. 2 and 3, the plurality of stator cores 2 are provided, the plurality of stator cores 2 correspond to the plurality of core holes 12 one by one, and each stator core 2 is installed in the core hole 12 corresponding thereto, so that the stator core 2 is limited by the core hole 12. In this embodiment, the cross section of the stator core 2 is trapezoidal, and the outline of the core hole 12 matches with the outline of the stator core 2. In a direction perpendicular to the stator pressing plate 1, one end of the stator core 2 is fixed in the core hole 12, and the other end of the stator core 2 is used for the coil 101 of the coil assembly 10 to wind.
In the present embodiment, as shown in fig. 1 and 2, the sealing body 3 is provided between the stator pressing plate 1 and the plurality of stator cores 2, and seals gaps between the plurality of stator cores 2 and the stator pressing plate 1. Specifically, the joint between each stator core 2 and the stator pressing plate 1 is provided with a sealing body 3, and the sealing body 3 can seal a gap between any one of the stator cores 2 and the stator pressing plate 1, so as to ensure the sealing performance of the stator assembly 30. The seal body 3 is formed on the stator pressing plate 1 by injection molding, and the gap between the stator pressing plate 1 and the stator core 2 can be filled with the raw liquid of the seal body 3 when the raw liquid flows. It is understood that, in order to prevent the raw liquid of the sealing body 3 from flowing irregularly, a mold may be provided to cooperate with the stator core 2 and the stator pressing plate 1 so as to form the sealing body 3 in accordance with the requirements. In this embodiment, the surface of the sealing body 3 facing the stator pressing plate 1 is completely attached to the stator pressing plate 1, so as to have a better sealing effect.
Alternatively, as shown in fig. 5, the sealing body 3 has a first through hole 31 and a plurality of second through holes 32. Wherein, the sealing body 3 is located on the cylinder 11 through the first through-hole 31 cover, that is, the sealing body 3 that this embodiment provided can also seal the gap between cylinder 11 and stator core 2, has further guaranteed stator assembly 30's sealed effect. The plurality of second through holes 32 correspond to the plurality of stator cores 2 one to one, and each stator core 2 passes through the second through hole 32 corresponding thereto, so that the sealing body 3 can also be filled between two adjacent stator cores 2.
Further, the shape of the second through hole 32 is the same as the shape of the stator core 2, and the size of the second through hole 32 matches the size of the stator core 2, so that the sealing body 3 can seal the gap between the stator core 2 and the stator pressing plate 1. In some embodiments, the wall of the second through hole 32 completely fits the stator core 2, so as to have a better sealing effect.
As shown in fig. 5, the sealing body 3 has a circular sheet-like structure, and the first through hole 31 is a circular hole and is located at the center of the sealing body 3. The plurality of second through holes 32 are arranged one turn around the first through holes 31. The contour of the stator pressing plate 1 is circular, and as shown in fig. 2, the diameter of the contour of the sealing body 3 is smaller than that of the contour of the stator pressing plate 1, so as to avoid the sealing body 3 from interfering with the installation of the stator pressing plate 1 and the housing 20.
Optionally, referring to fig. 4, the hole wall of the core hole 12 is provided with a core positioning protrusion 13, as shown in fig. 6 and 7, the stator core 2 is provided with a positioning groove 21 matched with the core positioning protrusion 13, and the core positioning protrusion 13 can be clamped in the positioning groove 21, so that the stator core 2 is installed in the core hole 12. In this embodiment, the surface of the iron core positioning protrusion 13 is coplanar with the side surface of the stator pressing plate 1 not provided with the column 11, the extending direction of the iron core positioning protrusion 13 is perpendicular to the hole wall of the iron core hole 12, and the positioning groove 21 can accommodate the iron core positioning protrusion 13. In some embodiments, the stator core 2 may be bonded or welded in the core hole 12. The stator core 2 can be limited in the thickness direction of the stator pressing plate 1 by arranging the core positioning lug 13.
Further, please refer to fig. 4, the two ends of the iron core hole 12 along the radial direction of the stator pressing plate 1 are respectively provided with an iron core positioning protrusion 13, and as shown in fig. 7, the two ends of the stator iron core 2 are respectively provided with a positioning groove 21, and the two iron core positioning protrusions 13 are respectively clamped in one positioning groove 21, so that the stator iron core 2 can be limited in the radial direction of the stator pressing plate 1.
The stator assembly 30 provided by the embodiment has a simple structure, is convenient to manufacture and produce in mass, and has a better sealing effect.
Example two
The present embodiment provides a motor stator, as shown in fig. 8 to 14, the motor stator includes a coil assembly 10, a housing 20, and two stator assemblies 30 according to the first embodiment.
The stator cores 2 of the two stator assemblies 30 are connected in a one-to-one correspondence to form a whole body of a plurality of stator cores, and in some embodiments, as shown in fig. 10, the two corresponding stator cores 2 are butted and coaxial. The coil assembly 10 includes a plurality of coils 101, and each coil 101 is around locating outside two stator core 2 of interconnect, namely, each whole overcoat of stator core is established a coil 101.
The casing 20 is hollow cylinder shape, and the terminal surface of casing 20 one end rigid coupling in the stator clamp plate 1 of a stator assembly 30, and the terminal surface of casing 20 other end rigid coupling in the stator clamp plate 1 of another stator assembly 30, and stator core 2 and coil 101 all are located the installation cavity that is formed by casing 20 and two stator clamp plates 1 to casing 20 and two stator clamp plates 1 can protect coil 101 and stator core 2 still. It should be noted that the columns 11 of the two stator assemblies 30 are butted.
Alternatively, as shown in fig. 11, the housing 20 has an inlet port 201 and an outlet port 202, and the inlet port 201 and the outlet port 202 are disposed opposite to each other in a radial direction of the housing 20. As shown in fig. 14, a first cooling channel 401 communicating with the liquid inlet 201 and the liquid outlet 202 is formed between the housing 20 and the coil 101, so that the cooling liquid can flow into the first cooling channel 402 through the liquid inlet 201 to cool one end surface of the coil 101. A second cooling channel 402 communicated with the first cooling channel 401 is formed between two adjacent coils 101, so that the cooling liquid in the first cooling channel 401 can flow into the second cooling channel 402, and the side surfaces of the coils 101 can be cooled. A third cooling channel 403 communicated with the second cooling channel 402 is formed between the coil 101 and the column 11, so that the cooling liquid in the second cooling channel 402 can flow into the third cooling channel 403, and then the other end surface of the coil 101 can be cooled.
As shown in fig. 14, the cooling liquid in the first cooling channel 401 flows into a part of the second cooling channel 402, flows from the part of the second cooling channel 402 into the third cooling channel 403, and flows back to the first cooling channel 401 through another part of the second cooling channel 402, and flows out from the liquid outlet 202. In fig. 14, a solid line with arrows indicates the flow direction of the coolant.
In this embodiment, referring to fig. 11 to 13, the housing 20 includes a first flange 203, a second flange 204, and a housing body 205 connected between the first flange 203 and the second flange 204. The first flange 203 is sealingly connected to one stator pressure plate 1, and the second flange 204 is sealingly connected to the other stator pressure plate 1.
The motor stator provided by the embodiment has better sealing performance and better cooling effect.
EXAMPLE III
The present embodiment provides an axial-flux electric machine including the electric machine stator of embodiment two. It can be understood that the axial flux motor further includes a rotor, and the structure of the rotor and the assembly manner of the rotor and the stator of the motor may refer to the prior art, which is not described herein again in this embodiment.
The axial flux motor provided by the embodiment has better sealing performance, and the performance of the axial flux motor cannot be influenced.
The foregoing embodiments are merely illustrative of the principles and features of this invention, which is not limited to the above-described embodiments, but rather is susceptible to various changes and modifications without departing from the spirit and scope of the utility model, which changes and modifications are within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (10)
1. A stator assembly, comprising:
the stator pressing plate (1) is characterized in that a cylinder (11) is fixedly arranged at the center of the stator pressing plate (1), the stator pressing plate (1) is provided with a plurality of iron core holes (12) penetrating through two sides of the stator pressing plate, and the plurality of iron core holes (12) are arranged around the cylinder (11);
the stator core (2) is provided with a plurality of stator cores (2), the plurality of stator cores (2) correspond to the plurality of core holes (12) one by one, and the stator cores (2) are arranged in the corresponding core holes (12);
the sealing body (3), the sealing body (3) injection moulding in stator clamp plate (1) and a plurality of between stator core (2), and sealed a plurality of stator core (2) with the gap between stator clamp plate (1).
2. The stator assembly according to claim 1, wherein the sealing body (3) has a first through hole (31) and a plurality of second through holes (32), the sealing body (3) is sleeved on the column body (11) through the first through hole (31), the plurality of second through holes (32) are in one-to-one correspondence with the plurality of stator cores (2), and the stator cores (2) pass through the second through holes (32) corresponding thereto.
3. The stator assembly according to claim 2, characterized in that the shape of the second through hole (32) is the same as the shape of the stator core (2) and the size of the second through hole (32) matches the size of the stator core (2).
4. The stator assembly according to claim 2, characterized in that the sealing body (3) is a circular sheet structure, the stator pressure plate (1) has a circular outer contour, and the sealing body (3) has a smaller diameter than the stator pressure plate (1).
5. The stator assembly according to claim 1, wherein the hole wall of the core hole (12) is provided with a core positioning protrusion (13), the stator core (2) is provided with a positioning groove (21) matched with the core positioning protrusion (13), and the core positioning protrusion (13) can be clamped in the positioning groove (21).
6. The stator assembly according to claim 5, wherein the core hole (12) is provided with core positioning protrusions (13) along two hole walls in the radial direction of the stator pressing plate (1), and the two ends of the stator core (2) are provided with positioning grooves (21).
7. An electric machine stator, characterized by comprising a coil assembly (10), a housing (20) and two stator assemblies according to any one of claims 1-6;
two stator assembly's stator core (2) one-to-one is connected, coil assembly (10) are including a plurality of coils (101), every coil (101) are around locating two of connecting stator core (2) are outer, casing (20) are hollow tube-shape, just the terminal surface rigid coupling of casing (20) one end in one stator assembly's stator clamp plate (1), the terminal surface rigid coupling of casing (20) other end in another stator assembly's stator clamp plate (1), stator core (2) reach coil (101) are located by casing (20) and two in the installation cavity that stator clamp plate (1) formed.
8. The motor stator according to claim 7, wherein the housing (20) has a liquid inlet (201) and a liquid outlet (202), a first cooling channel communicated with the liquid inlet (201) and the liquid outlet (202) is formed between the housing (20) and the coils (101), a second cooling channel communicated with the first cooling channel is formed between two adjacent coils (101), and a third cooling channel communicated with the second cooling channel is formed between the coils (101) and the column (11).
9. The electric machine stator according to claim 7, characterized in that the housing (20) comprises a first flange (203), a second flange (204) and a housing body (205) connected between the first flange (203) and the second flange (204), the first flange (203) being sealingly connected to one stator pressure plate (1) and the second flange (204) being sealingly connected to the other stator pressure plate (1).
10. An axial flux machine comprising a stator according to any one of claims 7 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122986740.5U CN216489939U (en) | 2021-12-01 | 2021-12-01 | Stator assembly, motor stator and axial flux motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122986740.5U CN216489939U (en) | 2021-12-01 | 2021-12-01 | Stator assembly, motor stator and axial flux motor |
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| Publication Number | Publication Date |
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| CN216489939U true CN216489939U (en) | 2022-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122986740.5U Active CN216489939U (en) | 2021-12-01 | 2021-12-01 | Stator assembly, motor stator and axial flux motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115065196A (en) * | 2022-07-25 | 2022-09-16 | 浙江卓瑞机电有限公司 | Noise control frame and noise control motor in motor |
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2021
- 2021-12-01 CN CN202122986740.5U patent/CN216489939U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115065196A (en) * | 2022-07-25 | 2022-09-16 | 浙江卓瑞机电有限公司 | Noise control frame and noise control motor in motor |
| CN115065196B (en) * | 2022-07-25 | 2023-06-23 | 浙江卓瑞机电有限公司 | Noise-proof frame and noise-proof motor in motor |
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