CN109450174B - Cooling system and motor - Google Patents
Cooling system and motor Download PDFInfo
- Publication number
- CN109450174B CN109450174B CN201910031452.9A CN201910031452A CN109450174B CN 109450174 B CN109450174 B CN 109450174B CN 201910031452 A CN201910031452 A CN 201910031452A CN 109450174 B CN109450174 B CN 109450174B
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- CN
- China
- Prior art keywords
- liquid
- cooling system
- stator core
- housing
- stator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000007788 liquid Substances 0.000 claims abstract description 166
- 238000005507 spraying Methods 0.000 claims abstract description 60
- 238000001816 cooling Methods 0.000 claims abstract description 58
- 239000007921 spray Substances 0.000 claims description 8
- 230000000903 blocking effect Effects 0.000 claims description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 230000000875 corresponding effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
- H02K9/197—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention discloses a cooling system and a motor, wherein the cooling system comprises: the liquid spraying cavity is arranged on the shell and used for containing liquid; a liquid inlet communicated with the liquid spraying cavity; a liquid outlet communicated with the closed cavity; and a liquid spraying hole arranged on the inner wall of the shell corresponding to the stator core. When the cooling system is adopted, liquid enters the liquid spraying cavity from the liquid inlet, liquid is sprayed on the stator core in the closed cavity through the liquid spraying Kong Xiangwei, and the liquid sprayed out through the liquid spraying hole exchanges heat with the stator core and then flows out from the liquid outlet. Compared with the prior art, the circulating liquid directly contacts and exchanges heat with the stator core, so that the cooling efficiency of the motor can be improved, and the service life of the motor is prolonged.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a cooling system and a motor.
Background
The existing automobile driving motor has complex operation condition, and various losses can be generated in the operation process of the motor due to the structural characteristics of the motor, so that the motor is heated. In order to improve the working efficiency of the motor, a cooling system is required to be designed for the motor, and the cooling system is mainly divided into two types, namely air cooling; the other is liquid cooling. Compared with air cooling, the efficiency of liquid cooling is higher. The existing liquid cooling system mainly adopts an external cooling mode, namely, cooling liquid is in indirect contact with a cooled core component, cooling efficiency is low, and service life of a motor is influenced.
Disclosure of Invention
In view of the above, the technical problem to be solved by the present invention is how to improve the cooling efficiency of the motor and prolong the service life of the motor.
In order to achieve the above purpose, the present invention provides the following technical solutions:
A cooling system for cooling a stator core, the cooling system comprising a housing and a closed cavity containing the stator core, the cooling system further comprising:
The liquid spraying cavity is arranged on the shell and used for containing liquid;
A liquid inlet communicated with the liquid spraying cavity;
a liquid outlet communicated with the closed cavity; and
And the liquid spraying hole is arranged on the inner wall of the shell corresponding to the stator core.
In one embodiment of the invention, the housing comprises:
A stator housing surrounding a circumferential surface of the stator core;
An upper cover plate and a lower cover plate closing both ends of the stator housing; and
The middle shaft sleeve is positioned in the middle of the stator housing, and the stator housing, the upper cover plate, the lower cover plate and the middle shaft sleeve enclose the closed cavity.
In another embodiment of the present invention, a first spoiler is disposed on an inner wall of the stator housing, and the area of the closed cavity close to the liquid outlet is separated into a liquid return area by the first spoiler, and the area close to the liquid spraying hole is separated into a liquid spraying area.
In another embodiment of the present invention, the number of the first spoilers is two, and the first spoilers are respectively located at two sides of the liquid outlet.
In another embodiment of the present invention, a second spoiler is disposed at a position of the intermediate sleeve near the liquid outlet.
In yet another embodiment of the present invention, the liquid inlet and/or the liquid outlet are provided on the stator housing.
In yet another embodiment of the present invention, the liquid inlet and the liquid outlet are disposed centrally on an external port of the housing.
In yet another embodiment of the present invention, the liquid spraying cavity is an annular structure.
In still another embodiment of the present invention, the number of the liquid ejecting holes is plural, and each of the liquid ejecting holes corresponds to a coil gap of the stator core.
The invention also discloses a motor, which comprises a stator core and a cooling system, wherein the cooling system is any one of the cooling systems.
In yet another embodiment of the present invention, the motor is an axial field motor.
According to the technical scheme, when the cooling system is adopted, liquid enters the liquid spraying cavity from the liquid inlet, liquid is sprayed on the stator core in the closed cavity through the liquid spraying Kong Xiangwei, and after heat exchange is carried out between the liquid sprayed out through the liquid spraying holes and the stator core, the liquid flows out from the liquid outlet. Compared with the prior art, the circulating liquid directly contacts and exchanges heat with the stator core, so that the cooling efficiency of the motor can be improved, and the service life of the motor is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an exploded structure of a cooling system according to an embodiment of the present invention;
FIG. 2 is a schematic perspective view of a cooling system according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a cooling system according to an embodiment of the present invention;
fig. 4 is a schematic diagram of another cooling system according to an embodiment of the present invention.
In the figure, 100 is a shell, 200 is a stator core, 300 is a liquid inlet, 400 is a liquid outlet, 500 is a liquid spraying cavity, 600 is a liquid spraying hole, 700 is a first spoiler, 101 is a stator shell, 102 is an upper cover plate, 103 is a lower cover plate, 104 is an intermediate shaft sleeve, and 1011 is an external port.
Detailed Description
The invention aims at providing a motor so as to improve the cooling efficiency of the motor and prolong the service life of the motor.
Furthermore, the embodiments shown below do not limit the summary of the invention described in the claims. The whole contents of the constitution shown in the following examples are not limited to the solution of the invention described in the claims.
Referring to fig. 1 to 4, a cooling system for cooling a stator core 200 according to an embodiment of the present invention includes: a housing 100; a closed cavity for accommodating the stator core 200; a liquid spraying chamber 500 provided on the housing 100 for containing liquid; a liquid inlet 300 in communication with the liquid spray cavity 500; a liquid outlet 400 in communication with the closed cavity; and liquid spraying holes 600 provided on an inner wall of the housing 100 corresponding to the stator core 200.
When the cooling system of the invention is adopted, liquid enters the liquid spraying cavity 500 from the liquid inlet 300, sprays liquid to the stator core 200 positioned in the closed cavity through the liquid spraying holes 600, exchanges heat with the stator core 200 through the liquid sprayed out of the liquid spraying holes 600, and then flows out from the liquid outlet 400. Compared with the prior art, the circulating liquid directly contacts and exchanges heat with the stator core 200, so that the cooling efficiency of the motor can be improved, and the service life of the motor is prolonged.
It should be noted that, the above-mentioned housing 100 is used for accommodating the stator core 200, a closed cavity is formed in the housing, and when the stator core 200 is mounted in the closed cavity, the liquid ejected through the liquid ejecting hole 600 can flow through the gap between the coils of the stator core 200, and finally flows out from the liquid outlet 400, thereby forming a cooling circulation loop.
The liquid spraying cavity 500 is disposed in the wall of the housing 100, that is, the portion where the liquid spraying cavity 500 is disposed is a hollow structure, and the liquid spraying cavity 500 may be adjusted according to the portion where the liquid spraying hole 600 is disposed, for example, a circumferential surface portion of the housing 100 surrounding the stator core 200 may be an end surface portion of the housing 100. The positions of the liquid inlet 300 and the liquid outlet 400 are also determined according to the position of the liquid spraying cavity 500.
The shape of the housing 100 may be any shape, as long as the liquid spraying cavity 500 and the liquid spraying hole 600 can be provided, which are all within the scope of the present invention. In one embodiment of the present invention, the housing 100 includes:
a stator housing 101 surrounding a circumferential surface of the stator core 200;
An upper cover plate 102 and a lower cover plate 103 closing both ends of the stator housing 101; and
The middle shaft sleeve 104 is positioned in the middle of the stator housing 101, and the stator housing 101, the upper cover plate 102, the lower cover plate 103 and the middle shaft sleeve 104 enclose a closed cavity.
It can be seen that, in the embodiment of the present invention, the housing 100 is integrally divided into four parts, and the housing 100 may be further divided into three parts according to specific requirements, for example, the upper cover plate 102 and the stator housing 101 are integrally formed, the lower cover plate 103 and the stator housing 101 are integrally formed, or a part of the stator housing 101 and the upper cover plate 102 are integrally formed, another part of the stator housing 101 and the lower cover plate 103 are integrally formed, and so on.
In order to further improve the cooling efficiency, in another embodiment of the present invention, a first spoiler 700 is disposed on the inner wall of the stator housing 101, and the area of the closed cavity close to the liquid outlet 400 is divided into a liquid return area and the area close to the liquid spraying hole 600 is divided into a liquid spraying area by the first spoiler 700.
Under the action of the first spoiler 700, the closed cavity is divided into a liquid return area and a liquid spraying area, the liquid spraying hole 600 in the liquid spraying area sprays liquid, and the sprayed liquid exchanges heat with the stator core 200, is collected in the liquid return area and flows out through the liquid outlet 400. In this case, the liquid sprayed from the liquid spraying hole 600 can flow from the outside to the inside of the stator core 200 uniformly by the first spoiler 700, so that the stator core 200 can be cooled uniformly.
The number of the first spoilers 700 can be one or more, so long as the structure that can prevent the liquid from flowing is within the scope of the present invention. In the illustration, the number of the first spoilers 700 is two, and the first spoilers are respectively located at two sides of the liquid outlet 400. So that the two first spoilers 700 form a liquid return area near the area between the liquid outlets 400 and a liquid spraying area far from the area between the liquid outlets 400, and the liquid spraying holes 600 are all arranged on the inner wall of the stator housing 101 in the liquid spraying area.
Further, a second spoiler is disposed on the intermediate sleeve 104 near the liquid outlet 400. The second spoilers function to uniformly flow the liquid inside the stator core 200 from the inside of the stator core 200 into the liquid return area to improve cooling efficiency.
Depending on the housing configuration, the spray cavities 500 may be provided on the stator housing 101, the upper cover plate 102 or the lower cover plate 103, while the corresponding inlets 300 and outlets 400 may be provided on the stator housing 101, the upper cover plate 102 or the lower cover plate 103. In the embodiment of the present invention, the liquid spraying cavity 500 is disposed on the stator housing 101, and the liquid inlet 300 and/or the liquid outlet 400 are disposed on the stator housing 101.
The liquid spraying cavity 500 comprises one or two liquid inlets 300, and when the liquid inlet 300 is formed, the liquid inlet is formed at one end of the liquid spraying cavity 500, as shown in fig. 3; in the case of two liquid inlets 300, two liquid inlets 300 are disposed at both ends of the liquid spraying chamber 500, as shown in fig. 4.
The liquid inlet 300 is provided with two liquid inlets, which are respectively positioned at two ends of the liquid spraying cavity 500, and an outlet is arranged at an external connection port of the liquid inlet 300. Or one of the liquid inlets 300 is positioned at one end of the liquid spraying cavity 500, and the corresponding external connection port of the liquid inlet 300 is provided with an outlet.
When disposed on the stator housing 101, the spray chamber 500 may be of annular configuration, surrounding the entire stator housing 101, or surrounding portions of the stator housing 101. In order to simplify the processing process, the liquid inlet 300 and the liquid outlet 1014 are disposed in a concentrated manner on the external port 1011 of the first housing 100. Of course, the external ports 1011 of the liquid inlet 300 and the liquid outlet 1014 may be separately provided as needed.
Further, when two liquid inlets 300 are provided and two liquid inlets 300 are located at two ends of the liquid spraying cavity 500, a partition plate is provided at the middle of the liquid spraying cavity 500 in order to avoid turbulence of the liquid located at the middle.
The stator housing 101 may be an integral structure or a split structure, wherein the integral structure is that the stator housing 101 is processed and the structure of the liquid spraying cavity 500 is processed together, for example, by casting. When the stator housing 101 is of a split structure, the stator housing 101 includes: the liquid spraying device comprises a stator base shell with a hollow structure and a sealing ring for sealing the hollow structure, wherein the sealing ring and the stator base shell jointly enclose a liquid spraying cavity 500.
The liquid spraying hole 600 is used for cooling the stator core 200 by spraying, in the embodiment of the invention, the liquid spraying hole is a nozzle, the liquid injected into the liquid spraying cavity 500 has a certain pressure, and the sprayed liquid is fine liquid under the action of the pressure through the liquid spraying hole 600, so that the contact area between the liquid and the stator core 200 is increased. The number of the liquid ejection holes 600 is one or more, and the plurality of liquid ejection holes 600 can further increase the liquid ejection area of the liquid ejection holes 600. Further, each of the spray holes 600 corresponds to a coil gap of the stator core 200, and each of the coil gaps corresponds to one spray hole. The liquid sprayed out of the liquid spraying holes can be directly contacted with the heat source, the cooling effect is better, the liquid can be uniformly split under the action of the first flow blocking plate 700 and the second flow blocking plate, the cooling is more uniform, and the temperature of the stator core 200 is well reduced.
The invention also discloses a motor, which comprises a stator core 200 and a cooling system, wherein the cooling system is any one of the cooling systems. Since the above cooling system has the above effects, the motor including the above cooling system also has the corresponding effects, and will not be described herein.
In a further embodiment of the invention, the motor is a radial field motor or an axial field motor, preferably an axial field motor.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A cooling system for cooling a stator core, the cooling system comprising a housing and a closed cavity housing the stator core, the cooling system further comprising:
The liquid spraying cavity is arranged on the shell and used for containing liquid;
A liquid inlet communicated with the liquid spraying cavity;
a liquid outlet communicated with the closed cavity; and
A liquid spraying hole arranged on the inner wall of the shell corresponding to the stator core;
the housing includes:
A stator housing surrounding a circumferential surface of the stator core;
An upper cover plate and a lower cover plate closing both ends of the stator housing; and
The middle shaft sleeve is positioned in the middle of the stator housing, and the stator housing, the upper cover plate, the lower cover plate and the middle shaft sleeve form a closed cavity;
The inner wall of the stator shell is provided with a first flow blocking plate, the area, close to the liquid outlet, of the closed cavity is divided into a liquid return area through the first flow blocking plate, and the area, close to the liquid spraying hole, is divided into a liquid spraying area.
2. The cooling system of claim 1, wherein the number of first spoilers is two and each is located on either side of the liquid outlet.
3. The cooling system of claim 1, wherein the intermediate sleeve is provided with a second spoiler adjacent to the liquid outlet.
4. The cooling system of claim 1, wherein the liquid inlet and/or the liquid outlet are provided on the stator housing.
5. The cooling system of any one of claims 1 to 4, wherein the liquid inlet and the liquid outlet are centrally disposed on an external port of the housing.
6. The cooling system of any one of claims 1 to 4, wherein the spray cavity is of annular configuration.
7. The cooling system according to any one of claims 1 to 4, wherein the number of the liquid ejection holes is plural, each of the liquid ejection holes corresponding to a coil gap of the stator core.
8. An electric machine comprising a stator core and a cooling system, characterized in that the cooling system is a cooling system according to any one of claims 1 to 7.
9. The motor of claim 8, wherein the motor is an axial field motor.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910031452.9A CN109450174B (en) | 2019-01-14 | 2019-01-14 | Cooling system and motor |
| PCT/CN2019/129106 WO2020147551A1 (en) | 2019-01-14 | 2019-12-27 | Cooling system, stator assembly, and axial magnetic field motor |
| EP19910377.1A EP3913777B1 (en) | 2019-01-14 | 2019-12-27 | Axial magnetic field motor with liquid cooled stator |
| EP25159114.5A EP4535619A3 (en) | 2019-01-14 | 2019-12-27 | Axial magnetic field motor with liquid cooled stator |
| US17/422,424 US11942828B2 (en) | 2019-01-14 | 2019-12-27 | Cooling system, stator assembly, and axial magnetic field motor |
| US18/400,968 US20240235298A9 (en) | 2019-01-14 | 2023-12-29 | Cooling system, stator assembly, and axial magnetic field motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910031452.9A CN109450174B (en) | 2019-01-14 | 2019-01-14 | Cooling system and motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109450174A CN109450174A (en) | 2019-03-08 |
| CN109450174B true CN109450174B (en) | 2024-09-06 |
Family
ID=65544148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910031452.9A Active CN109450174B (en) | 2019-01-14 | 2019-01-14 | Cooling system and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109450174B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4535619A3 (en) | 2019-01-14 | 2025-07-23 | Shanghai Pangood Power Technology Co., Ltd. | Axial magnetic field motor with liquid cooled stator |
| CN109462311B (en) * | 2019-01-14 | 2025-04-04 | 上海盘毂动力科技股份有限公司 | A cooling system and a motor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102396134A (en) * | 2009-02-13 | 2012-03-28 | Isis创新有限公司 | Electric machine - cooling |
| CN207234586U (en) * | 2017-08-24 | 2018-04-13 | 长城汽车股份有限公司 | Motor and vehicle |
| CN109462311A (en) * | 2019-01-14 | 2019-03-12 | 上海盘毂动力科技股份有限公司 | A kind of cooling system and motor |
| CN209659094U (en) * | 2019-01-14 | 2019-11-19 | 上海盘毂动力科技股份有限公司 | A kind of cooling system and motor |
| CN209659093U (en) * | 2019-01-14 | 2019-11-19 | 上海盘毂动力科技股份有限公司 | A kind of cooling system and motor |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4611857B2 (en) * | 2005-10-11 | 2011-01-12 | 本田技研工業株式会社 | motor |
| JP6270213B2 (en) * | 2014-06-05 | 2018-01-31 | 株式会社神戸製鋼所 | Electric motor |
| JP6254926B2 (en) * | 2014-11-06 | 2017-12-27 | 株式会社神戸製鋼所 | Axial gap type brushless motor |
| US20160164378A1 (en) * | 2014-12-04 | 2016-06-09 | Atieva, Inc. | Motor Cooling System |
| JP2016163373A (en) * | 2015-02-26 | 2016-09-05 | 株式会社日立製作所 | Axial gap motor |
| CN105576927B (en) * | 2016-03-09 | 2019-01-15 | 深圳小象电动科技有限公司 | The disc-type electric motor that stator immersion oil radiates and rotor is built-in |
-
2019
- 2019-01-14 CN CN201910031452.9A patent/CN109450174B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102396134A (en) * | 2009-02-13 | 2012-03-28 | Isis创新有限公司 | Electric machine - cooling |
| CN207234586U (en) * | 2017-08-24 | 2018-04-13 | 长城汽车股份有限公司 | Motor and vehicle |
| CN109462311A (en) * | 2019-01-14 | 2019-03-12 | 上海盘毂动力科技股份有限公司 | A kind of cooling system and motor |
| CN209659094U (en) * | 2019-01-14 | 2019-11-19 | 上海盘毂动力科技股份有限公司 | A kind of cooling system and motor |
| CN209659093U (en) * | 2019-01-14 | 2019-11-19 | 上海盘毂动力科技股份有限公司 | A kind of cooling system and motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109450174A (en) | 2019-03-08 |
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