CN217522645U - Stator module and motor with same - Google Patents
Stator module and motor with same Download PDFInfo
- Publication number
- CN217522645U CN217522645U CN202221423909.4U CN202221423909U CN217522645U CN 217522645 U CN217522645 U CN 217522645U CN 202221423909 U CN202221423909 U CN 202221423909U CN 217522645 U CN217522645 U CN 217522645U
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- stator
- cooling
- stator core
- baffle
- cooling medium
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- 238000001816 cooling Methods 0.000 claims abstract description 83
- 239000002826 coolant Substances 0.000 claims abstract description 52
- 238000004080 punching Methods 0.000 claims abstract description 26
- 230000000694 effects Effects 0.000 abstract description 7
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 239000000110 cooling liquid Substances 0.000 description 22
- 239000000112 cooling gas Substances 0.000 description 21
- 230000004888 barrier function Effects 0.000 description 6
- 238000003475 lamination Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
Images
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The utility model provides a stator module and have its motor, stator module wherein, include: the stator core comprises a plurality of stator punching sheets, each stator punching sheet is provided with a yoke ring, cooling holes penetrating through the yoke ring in the radial direction are formed in the yoke ring, the stator punching sheets are coaxially stacked together to form the stator core, and the cooling holes in the stator punching sheets sequentially deflect a preset angle around the axis of the stator core so that the cooling holes are communicated with each other to form a cooling flow channel extending spirally along the axial direction of the stator core. According to the utility model discloses, the formation of cooling runner has made things convenient for direct and stator core internal contact of coolant, flows through the in-process of cooling runner when coolant, can be direct and stator core's inside takes place the heat exchange and in time takes away a large amount of heats to improve heat exchange efficiency, strengthened the cooling effect, solved the difficult problem that gives off of high-speed motor stator inside heat.
Description
Technical Field
The utility model belongs to the technical field of the motor, concretely relates to stator module and have its motor.
Background
With the rapid development of the high-speed motor industry, the motor field is continuously developed to high speed and miniaturization. Because the motor power and the rotational speed of the high-speed motor are further improved, a large amount of heat can be generated by the iron consumption and the copper consumption of the stator assembly in the working process, the temperature of the stator assembly is overhigh due to the heat, and then the insulating paint on the enameled wire of the stator is melted to burn out the short circuit of the stator, so that the normal work of the motor is influenced, and a cooling structure is required to be designed to timely discharge the heat generated inside the motor. At present, the cooling mode inside the motor is to arrange a flow channel in a motor shell, heat generated by the motor is transferred to a shell through a stator core, and then the heat is taken out of the motor by a cooling medium in the flow channel inside the shell. Although this cooling method is feasible, the stator of a high-speed motor generates a large amount of heat, and if this cooling method is used to cool the motor in such a way that the cooling medium cannot directly contact the inside of the stator assembly, the heat exchange efficiency is low, and the cooling effect of the stator is not good.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model provides a stator module can overcome the unable directness of coolant and stator module internal contact and carry out the heat exchange, causes the not good not enough of cooling effect.
In order to solve the above problem, the utility model provides a stator module, include: the stator core comprises a plurality of stator punching sheets, the stator punching sheets are provided with yoke rings, cooling holes penetrating through the yoke rings in the axial direction are constructed on the yoke rings, the stator punching sheets are coaxially stacked together to form the stator core, and the cooling holes in the stator punching sheets deflect preset angles around the axis of the stator core in sequence so that the cooling holes are mutually communicated to form cooling flow channels extending around the axial spiral direction of the stator core.
In some embodiments, the predetermined angle is 1 ° to 5 °.
In some embodiments, the predetermined angle is 2.5 ° to 3.5 °.
In some embodiments, the number of the cooling flow channels is plural, and the cooling flow channels are distributed at intervals in the stator core.
In some embodiments, a first baffle plate is installed at one axial end of the stator core, and a first annular groove surrounding the first baffle plate is formed in the first baffle plate, so that a cooling medium in the first annular groove can enter the cooling flow channel.
In some embodiments, a cooling medium inlet is formed on an end face of the first baffle plate facing away from the stator core or on an outer circumferential surface of the first baffle plate, and the cooling medium inlet communicates with the first annular groove.
In some embodiments, the number of the cooling medium inlets is at least two, and each of the cooling medium inlets is arranged at intervals on the first baffle.
In some embodiments, a second baffle plate is installed at one end of the stator core, which is far away from the first baffle plate, a second annular groove surrounding the second baffle plate in a circle is formed in the second baffle plate, and the cooling medium can enter the second annular groove through the cooling flow channel.
In some embodiments, a cooling medium outlet is formed on an end face of the second baffle facing away from the stator core or on an outer circumferential surface of the second baffle, which cooling medium outlet communicates with the second annular groove.
In some embodiments, the number of the cooling medium outlets is at least two, and the cooling medium outlets are arranged at intervals on the second baffle.
The utility model also provides a motor, including foretell stator module.
The utility model provides a stator module and have its motor, cooling runner's formation has made things convenient for direct and stator core internal contact of coolant, and wherein coolant can be liquid or gaseous, and when cooling liquid or the in-process of gas flow through cooling runner, can be direct and stator core's inside take place the heat exchange and in time take away a large amount of heats to improve heat exchange efficiency, strengthened the cooling effect, solved the difficult problem that gives off of high-speed motor stator inside heat. Meanwhile, the cooling flow channel is a spirally extending flow channel, so that the path of the cooling flow channel in the stator core is longer, the cooling liquid or gas entering the cooling flow channel can take away more heat in the stator core at one time, and the heat exchange efficiency is higher.
Drawings
Fig. 1 is a schematic structural view of a stator assembly according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a cooling flow passage of a stator assembly according to an embodiment of the present invention;
fig. 3 is a top view of a stator assembly according to an embodiment of the present invention;
figure 4 is a cross-sectional view of a stator assembly of an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a stator lamination of a stator assembly according to an embodiment of the present invention;
fig. 6 is a schematic structural view of a first baffle of a stator assembly according to an embodiment of the present invention;
fig. 7 is a side sectional view of a first baffle of a stator assembly of an embodiment of the present invention.
The reference numerals are represented as:
1. stator punching; 2. a cooling hole; 3. a stator core; 4. a cooling flow channel; 5. a first baffle plate; 6. a first annular groove; 7. a cooling medium inlet; 8. a second baffle; 9. a second annular groove; 10. and a cooling medium outlet.
Detailed Description
Referring collectively to fig. 1-7, according to an embodiment of the present invention, there is provided a stator assembly, comprising: including stator core 3, stator core 3 includes a plurality of stator punching sheet 1, and stator punching sheet 1 has the yoke ring, constructs on the yoke ring to run through yoke ring axial cooling hole 2, and each stator punching sheet 1 is coaxial to be laminated together and forms stator core 3, and the cooling hole 2 on each stator punching sheet 1 deflects preset angle so that each cooling hole 2 communicates each other and forms the cooling flow channel 4 that encircles stator core 3's axial spiral extension around stator core 3 around the axis of stator core 3 in proper order. In the technical scheme, each stator punching sheet 1 is provided with a cooling hole 2 which penetrates through the stator punching sheet 1 in the axial direction, and in two adjacent stator punching sheets 1, the cooling hole 2 on the latter stator punching sheet 1 deflects for a certain preset angle relative to the cooling hole 2 on the former stator punching sheet 1, so that when the stator punching sheets 1 are coaxially and fixedly stacked together, a cooling flow channel 4 which spirally extends around the stator core 3 in the axial direction is formed in the formed stator core 3. The formation of cooling runner 4 has made things convenient for the direct and stator core 3's of coolant internal contact, and wherein coolant can be liquid or gaseous, flows through the in-process of cooling runner 4 when cooling liquid or gas, can be direct take place the heat exchange and in time take away a large amount of heats with stator core 3's inside to improve heat exchange efficiency, strengthened the cooling effect, solved the difficult problem that gives off of high-speed motor stator inside heat. Meanwhile, because the cooling flow channel 4 is a spirally extending flow channel, the path of the cooling flow channel in the stator core 3 is longer, and the cooling liquid or gas entering the cooling flow channel can take away more heat in the stator core 3 at one time, so that the heat exchange efficiency is higher. Furthermore, the formation of the cooling flow passage 4 also reduces the weight of the motor, improves the inherent frequency of the motor, reduces the vibration intensity of the motor, improves the reliability and the safety of the operation of the motor, and improves the power density and the rotating speed of the high-speed motor.
In one specific embodiment, the predetermined angle is 1 ° to 5 °.
In the embodiment, a preset angle is an angle of deflection of the cooling hole 2 on the following stator lamination 1 relative to the cooling hole 2 on the preceding stator lamination 1 in the two adjacent stator laminations 1, on the cylindrical surface, an acute angle between the tangent line of the cylindrical spiral line and the straight generatrix of the cylindrical surface passing through the tangent point is a spiral angle, therefore, when the preset angle, i.e., the helix angle of the cooling flow channels 4, is 1 to 5, the number of turns of the cooling flow channel 4 rotating on the stator core 3 can be controlled to be 2-8, at the moment, the cooling holes 2 on two adjacent stator punching sheets 1 are staggered from each other and cannot be too large, that is, the overlapping parts of the cooling holes 2 on two adjacent stator laminations 1 are more, so that the cooling medium has a proper flow speed in the cooling flow channel 4, and a better effect is achieved in the aspect of taking away the heat inside the stator core 3.
In a specific embodiment, the predetermined angle is 2.5 ° to 3.5 °.
In the present embodiment, a more preferable configuration is one in which the helix angle of the cooling flow channels 4 is 2.5 ° to 3.5 °, and the cooling medium is more effective in terms of flow rate and heat removal from the inside of the stator core 3 when flowing through the cooling flow channels 4.
Specifically, the number of the cooling passages 4 is plural, and the cooling passages 4 are distributed at intervals in the stator core 3.
In the present embodiment, it is preferable that the cooling flow passages 4 are uniformly spaced around the stator core 3, and the plurality of cooling flow passages 4 uniformly distributed can not only improve the cooling efficiency but also uniformly cool the stator core 3.
As a specific embodiment, a first baffle 5 is installed at one axial end of the stator core 3, a first annular groove 6 surrounding the first baffle 5 is configured on the first baffle 5, and the cooling medium in the first annular groove 6 can enter the cooling flow passage 4.
In the present embodiment, as shown in fig. 1 and 6, it is preferable that the radial section of the first barrier 5 matches the radial section of the stator core 3, and the first annular groove 6 and the first barrier 5 are coaxial. When the first baffle 5 is fitted to the axial end portion of the stator core 3, the opening of the first annular groove 6 faces the stator core 3, and the first annular groove 6 communicates with all the cooling flow passages 4 at the same time, and at this time, the cooling liquid or gas fed into the first annular groove 6 enters each cooling flow passage 4. The first annular grooves 6 have a flow dividing effect which ensures that the cooling liquid or gas is distributed simultaneously and uniformly in the individual cooling channels 4.
As a specific embodiment, a coolant inlet 7 is formed on the end face of the first baffle 5 facing away from the stator core 3 or on the outer circumferential surface of the first baffle 5, the coolant inlet 7 communicating with the first annular groove 6.
In this embodiment, cooling liquid or gas can be fed into the first annular groove 6 via the cooling medium inlet 7.
In a specific embodiment, the number of the cooling medium inlets 7 is at least two, and the cooling medium inlets 7 are arranged at intervals on the first baffle 5.
In this embodiment, since the number of the cooling channels 4 is plural, if only one cooling medium inlet 7 is used to feed the cooling liquid or gas into the first annular groove 6, and then the cooling liquid or gas enters each cooling channel 4 from the first annular groove 6, it will happen that less cooling liquid or gas enters each cooling channel 4 per unit time, and the cooling efficiency is low. In order to increase the cooling efficiency, two or more cooling medium inlets 7 may be provided in the first baffle 5, and then cooling liquid or gas may be simultaneously supplied into the first annular groove 6 from each cooling medium inlet 7.
As a specific embodiment, the end of the stator core 3 facing away from the first baffle 5 is provided with a second baffle 8, the second baffle 8 is configured with a second annular groove 9 surrounding the second baffle 8 for one circle, and the cooling medium can enter the second annular groove 9 through the cooling flow channel 4.
In this embodiment, it is preferable that the second barrier 8 and the first barrier 5 have the same structure, the radial cross section of the second barrier 8 matches the radial cross section of the stator core 3, and the second annular groove 9 and the second barrier 8 are coaxial. When the second baffle plate 8 is fitted to the end of the stator core 3 facing away from the first baffle plate 5, the second annular groove 9 opens toward the stator core 3, and the second annular groove 9 communicates with all the cooling flow passages 4 at the same time, and the cooling liquid or gas flowing through each cooling flow passage 4 enters the second annular groove 9. The second annular groove 9 has a collecting function, and can collect the cooling liquid or gas in each cooling flow passage 4 together at the same time for recycling.
As a specific embodiment, a cooling medium outlet 10 is formed on the end face of the second baffle 8 facing away from the stator core 3 or on the outer circumferential surface of the second baffle 8, the cooling medium outlet 10 communicating with the second annular groove 9.
In the present embodiment, the opening of the cooling medium outlet 10 realizes the re-pumping of the cooling liquid or gas entering the stator core 3, and the recycling of the cooling liquid or gas can be realized by pumping the cooling liquid or gas out of the cooling medium outlet 10 and inputting the cooling liquid or gas into the first annular groove 6 from the cooling medium inlet 7.
In a specific embodiment, the number of the cooling medium outlets 10 is at least two, and the cooling medium outlets 10 are arranged at intervals on the second baffle 8.
In the present embodiment, since the number of the cooling channels 4 is plural, the amount of the cooling liquid or gas collected from each cooling channel 4 into the second annular groove 9 per unit time is large, and if only one cooling medium outlet 10 is used for extracting the cooling liquid or gas, it is obvious that the amount of the cooling liquid or gas extracted per unit time is small, the circulation efficiency of the cooling liquid or gas is low, and the heat inside the stator core 3 cannot be taken out promptly and quickly. In order to increase the circulation efficiency, at least two or more cooling medium outlets 10 may be provided in the second baffle 8.
After the stator core 3, the first baffle 5 and the second baffle 8 are assembled together to form a stator, the whole stator is subjected to paint dipping treatment, so that gaps among the stator punching sheets 1 are ensured, and no gap exists between the stator punching sheets 1 and the first baffle 5 and the second baffle 8, so that when the fixed cooling liquid or gas advances in the cooling flow channel 4, the leakage phenomenon cannot occur.
According to the utility model discloses an embodiment still provides a motor, including foretell stator module.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention. The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (11)
1. The stator assembly is characterized by comprising a stator core (3), wherein the stator core (3) comprises a plurality of stator punching sheets (1), each stator punching sheet (1) is provided with a yoke ring, cooling holes (2) which penetrate through the yoke ring in the axial direction are constructed on the yoke ring, the stator punching sheets (1) are coaxially stacked together to form the stator core (3), and the cooling holes (2) on each stator punching sheet (1) sequentially deflect around the axis of the stator core (3) by preset angles so that the cooling holes (2) are communicated with each other to form a cooling flow channel (4) which spirally extends in the axial direction and surrounds the stator core (3).
2. The stator assembly of claim 1, wherein the predetermined angle is 1 ° -5 °.
3. The stator assembly of claim 2, wherein the predetermined angle is 2.5 ° -3.5 °.
4. The stator assembly according to claim 1, characterized in that the number of the cooling flow channels (4) is multiple, and the cooling flow channels (4) are distributed at intervals in the stator core (3).
5. The stator assembly according to any of the claims 1 to 4, characterized in that a first baffle plate (5) is mounted at one axial end of the stator core (3), a first annular groove (6) surrounding the first baffle plate (5) is constructed on the first baffle plate (5), and the cooling medium in the first annular groove (6) can enter the cooling flow channel (4).
6. The stator assembly according to claim 5, characterized in that a cooling medium inlet (7) is formed on the end face of the first baffle plate (5) facing away from the stator core (3) or on the outer circumferential surface of the first baffle plate (5), the cooling medium inlet (7) communicating with the first annular groove (6).
7. The stator assembly according to claim 6, characterized in that the number of the cooling medium inlets (7) is at least two, and each of the cooling medium inlets (7) is arranged at intervals on the first baffle (5).
8. The stator assembly according to claim 5, characterized in that a second baffle (8) is mounted at the end of the stator core (3) facing away from the first baffle (5), a second annular groove (9) is formed in the second baffle (8) and surrounds the second baffle (8), and the cooling medium can enter the second annular groove (9) through the cooling flow channel (4).
9. The stator assembly according to claim 8, characterized in that a cooling medium outlet (10) is formed on the end face of the second baffle plate (8) facing away from the stator core (3) or on the outer circumferential surface of the second baffle plate (8), the cooling medium outlet (10) communicating with the second annular groove (9).
10. The stator assembly according to claim 9, characterized in that the number of the cooling medium outlets (10) is at least two, and the cooling medium outlets (10) are arranged at intervals on the second baffle (8).
11. An electrical machine comprising a stator assembly according to any of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221423909.4U CN217522645U (en) | 2022-06-06 | 2022-06-06 | Stator module and motor with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221423909.4U CN217522645U (en) | 2022-06-06 | 2022-06-06 | Stator module and motor with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217522645U true CN217522645U (en) | 2022-09-30 |
Family
ID=83391980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221423909.4U Active CN217522645U (en) | 2022-06-06 | 2022-06-06 | Stator module and motor with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217522645U (en) |
-
2022
- 2022-06-06 CN CN202221423909.4U patent/CN217522645U/en active Active
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