CN111725909A - Stator module and axial magnetic field motor - Google Patents
Stator module and axial magnetic field motor Download PDFInfo
- Publication number
- CN111725909A CN111725909A CN201910209380.2A CN201910209380A CN111725909A CN 111725909 A CN111725909 A CN 111725909A CN 201910209380 A CN201910209380 A CN 201910209380A CN 111725909 A CN111725909 A CN 111725909A
- Authority
- CN
- China
- Prior art keywords
- cooling
- outer ring
- oil
- stator core
- spoilers
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- 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.)
- Pending
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- 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
-
- 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
Abstract
When the stator assembly is adopted, cooling oil enters an outer ring cooling area positioned at the head end of a cooling cycle from an oil inlet, enters a corresponding inner ring cooling area from the outer ring cooling area through an oil guide groove, enters the corresponding outer ring cooling area from the inner ring cooling area through the oil guide groove, finally enters an outer ring cooling area positioned at the tail end of the cooling cycle through the oil guide groove and flows out from an oil outlet. In the cooling circulation process, the cooling oil can directly contact with the stator core to exchange heat in the flowing process of the outer ring cooling area and the inner ring cooling area, 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 stator assembly and an axial magnetic field 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 mainly comprises 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 oil is in indirect contact with a cooled core component, so that the cooling efficiency is low, and the service life of the motor is influenced.
Disclosure of Invention
In view of this, 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 purpose, the invention provides the following technical scheme:
a stator assembly, comprising:
the stator core is arranged in the shell; the outer circular ring of the stator core and the shell enclose a first cooling space, and the inner circular ring of the stator core and the shell enclose a second cooling space;
n first spoilers disposed in the first cooling space, the plurality of first spoilers dividing the first cooling space into N outer ring cooling zones;
m second spoilers provided in the second cooling space, the plurality of second spoilers dividing the second cooling space into M inner ring cooling zones, wherein N-M is 1, the second spoilers being arranged in a staggered manner with respect to the first spoilers;
the oil guide grooves are arranged at the bottom of the shell, the inner ring cooling areas are communicated with the two adjacent outer ring cooling areas, and the M inner ring cooling areas, the N outer ring cooling areas and the corresponding oil guide grooves are sequentially communicated to form a cooling cycle; and
the oil inlet is communicated with an outer ring cooling area positioned at the head end of the cooling cycle, and the oil outlet is communicated with an outer ring cooling area positioned at the tail end of the cooling cycle.
In one embodiment of the invention, the stator core is enclosed in a space enclosed by the housing and the sealing cover plate by the sealing cover plate.
In one embodiment of the invention, the sealing cover plate is fixed to the housing by screws.
In one embodiment of the invention, one end of the sealing cover plate close to the stator core is provided with a matching rib matched with the notch of the stator core, and a matching surface matched with the tooth part of the stator core is arranged between adjacent matching ribs.
In one embodiment of the invention, the oil outlet of the housing is located at an end face of the housing.
In one embodiment of the invention, the number of the oil guiding grooves is the same as the number of teeth of the stator core.
In one embodiment of the present invention, the oil guide groove corresponds to a tooth slot of the stator core.
In one embodiment of the present invention, the number of the first spoiler is four, and the number of the second spoiler is three.
In one embodiment of the invention, an axial field machine is disclosed comprising a stator assembly as described in any of the above.
According to the technical scheme, when the stator assembly is adopted, cooling oil enters the outer ring cooling area at the head end of the cooling circulation from the oil inlet, enters the corresponding inner ring cooling area from the outer ring cooling area through the oil guide groove, enters the corresponding outer ring cooling area from the inner ring cooling area through the oil guide groove, finally enters the outer ring cooling area at the tail end of the cooling circulation through the oil guide groove, and flows out from the oil outlet. In the cooling circulation process, the cooling oil can directly contact with the stator core to exchange heat in the flowing process of the outer ring cooling area and the inner ring cooling area, 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 present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is an exploded view of a stator assembly according to an embodiment of the present invention;
fig. 2 is a schematic perspective view of a stator assembly according to an embodiment of the present invention;
fig. 3 is a schematic perspective cross-sectional structural diagram of a stator assembly according to an embodiment of the present invention;
fig. 4 is a schematic perspective view of a housing according to an embodiment of the present invention;
fig. 5 is a schematic perspective view of a sealing cover plate according to an embodiment of the present invention;
in the drawing, 100 is a housing, 200 is a stator core, 300 is a first cooling space, 400 is a second cooling space, 500 is a first spoiler, 600 is a second spoiler, 700 is a sealing cover plate, 101 is an oil inlet, 102 is an oil outlet, 103 is an oil guide groove, 301 is a first outer ring cooling region, 302 is a second outer ring cooling region, 303 is a third outer ring cooling region, 304 is a fourth outer ring cooling region, 401 is a first inner ring cooling region, 402 is a second inner ring cooling region, 403 is a third inner ring cooling region, 701 is a fitting rib, and 702 is a fitting surface.
Detailed Description
The core of the invention is to provide a stator component and an axial magnetic field motor so as to improve the cooling efficiency of the motor and prolong the service life of the motor.
The embodiments described below do not limit the contents of the invention described in the claims. The entire contents of the configurations shown in the following embodiments are not limited to those required as solutions of the inventions described in the claims.
Referring to fig. 1 to 5, a stator assembly according to an embodiment of the present invention includes:
a housing 100 and a stator core 200 disposed inside the housing 100; wherein, the outer ring of the stator core 200 and the housing 100 enclose a first cooling space 300, and the inner ring of the stator core 200 and the housing 100 enclose a second cooling space 400;
n first spoilers 500 disposed in the first cooling space 300, the plurality of first spoilers 500 dividing the first cooling space 300 into N outer ring cooling zones;
m second spoilers 600 disposed in the second cooling space 400, the plurality of second spoilers 600 dividing the second cooling space 400 into M inner loop cooling regions, where N-M is 1, the second spoilers 600 being staggered from the first spoilers 500;
a plurality of oil guide grooves 103 are formed in the bottom of the housing 100, and by means of the oil guide grooves 103, the inner ring cooling areas are communicated with the two adjacent outer ring cooling areas, and the M inner ring cooling areas, the N outer ring cooling areas and the corresponding oil guide grooves 103 are sequentially communicated to form a cooling cycle; and
an oil inlet 101 and an oil outlet 102 are provided on the housing 100, the oil inlet 101 communicating with an outer annular cooling area at the head end of the cooling cycle, and the oil outlet 102 communicating with an outer annular cooling area at the tail end of the cooling cycle.
When the stator assembly is adopted, cooling oil enters an outer ring cooling area at the head end of a cooling cycle from an oil inlet 101, enters a corresponding inner ring cooling area from the outer ring cooling area through an oil guide groove 103, enters a corresponding outer ring cooling area from the inner ring cooling area through the oil guide groove 103, finally enters an outer ring cooling area at the tail end of the cooling cycle through the oil guide groove 103, and flows out from an oil outlet 102. In the cooling circulation process, the cooling oil can directly contact with the stator core 200 to exchange heat in the flowing process of the outer ring cooling area and the inner ring cooling area, so that the cooling efficiency of the motor can be improved, and the service life of the motor is prolonged.
In the embodiment of the present invention, the first spoiler 500 and the second spoiler 600 are arranged to allow the cooling oil to flow along a specific trajectory, so as to prolong the contact time of the cooling oil with the stator core 200, and simultaneously allow the cooling oil to contact with most of the stator core 200, so as to make the temperature on the stator core 200 more uniform.
For example: referring to fig. 3, in the embodiment of the present invention, four first spoilers 500 divide the first cooling space 300 into four outer ring cooling areas, which are a first outer ring cooling area 301, a second outer ring cooling area 302, a third outer ring cooling area 303 and a fourth outer ring cooling area 304, and the four outer ring cooling areas are sequentially arranged along a circumferential direction, wherein the first outer ring cooling area 301 is located at a head end of a cooling cycle, the fourth outer ring cooling area 304 is located at a tail end of the cooling cycle, the first outer ring cooling area 301 is communicated with the oil inlet 101, and the fourth outer ring cooling area 304 is communicated with the oil outlet 102.
In the embodiment of the present invention, the second cooling space 400 is divided into three inner ring cooling zones, i.e., a first inner ring cooling zone 401, a second inner ring cooling zone 402, and a third inner ring cooling zone 403, by three second spoilers 600.
The cooling oil enters the first outer ring cooling area 301 through the oil inlet 101, enters the first inner ring cooling area 401 from the first outer ring cooling area 301, enters the second outer ring cooling area 302 from the first inner ring cooling area 401, enters the second inner ring cooling area 402 from the second outer ring cooling area 302, enters the third outer ring cooling area 303 from the second inner ring cooling area 402, enters the third inner ring cooling area 403 from the third outer ring cooling area 303, enters the fourth outer ring cooling area 304 from the third inner ring cooling area 403, and finally flows out of the oil outlet 102 to complete a cooling cycle.
The above description is only given by taking N-4 and M-3 as an example, and the embodiment of the present invention is not limited to the above form, and any arrangement form that can enable the embodiment of the present invention to form the first spoiler 500 and the second spoiler 600 that perform the circulation cooling according to the specific trajectory is within the scope of the present invention.
The stator assembly includes one case or a plurality of cases 100, and when a plurality of cases 100 are included, one stator core 200 is mounted to each case 100. All of the plurality of housings 100 may be two housings 100, three housings 100, four housings 100, and so on. The plurality of housings 100 are coaxially arranged, that is: the end faces of the adjacent housings 100 are in abutment with each other. The number of the housings 100 may be determined according to the magnitude of the output power. In two adjacent shells, the oil outlet of the front shell is communicated with the oil inlet of the rear shell.
In two adjacent housings 100, the oil outlet 102 of one housing 100 is communicated with the oil inlet 101 of the other housing 100. The connection may be made by a peripheral pipe, or the oil inlet 101 of one housing 100 may be arranged coaxially with the oil outlet 102 of the other housing 100. Namely, the oil outlet 102 and the oil inlet 101 are both disposed on the end surface, and when the two housings 100 are butted, the oil outlet 102 and the oil inlet 101 are self-communicated.
Taking two shells 100 as an example, the oil outlet 102 of one shell 100 is arranged on the end surface, the oil inlet 101 of the other shell 100 is arranged on the end surface, and when the two shells 100 are butted, the oil outlet 102 of the previous shell 100 is communicated with the oil inlet 101 of the next shell 100.
In the plurality of housings 100, the oil inlet 101 of the housing 100 at one end and the oil outlet 102 of the housing 100 at the other end may be located on an end surface of the corresponding housing 100, or may be located on a circumferential surface of the corresponding housing 100. Preferably, in order to facilitate installation of subsequent parts, in the embodiment of the present invention, the oil inlet 101 of the housing 100 at one end and the oil outlet 102 of the housing 100 at the other end are both disposed on the circumferential surface of the housing 100, and further, the oil inlet 101 of the housing 100 at one end and the oil outlet 102 of the housing 100 at the other end are both disposed on the same side.
In the embodiment of the present invention, the number of oil guiding grooves 103 is multiple, wherein the number of oil guiding grooves 103 is the same as or different from the number of teeth of stator core 200, and in the embodiment of the present invention, the number of oil guiding grooves 103 is the same as the number of teeth of stator core 200.
Further, oil guide grooves 103 correspond to tooth slots of stator core 200. Since the coil is a main heat generating part in stator core 200, when oil guide groove 103 corresponds to the coil gap of stator core 200, the cooling oil entering oil guide groove 103 can sufficiently contact the coil gap, so that the cooling effect can be further improved.
In order to prevent the liquid leakage, in the embodiment of the present invention, the stator core 200 is enclosed in the space enclosed by the housing 101 and the sealing cover 700 by the sealing cover 700. The sealing cover plate 700 is fixed to the housing 101 by screws, or may be coupled by a pressing plate, welding, riveting, or dovetail.
In one embodiment of the present invention, one end of the sealing cover plate 700 near the stator core 200 is provided with a fitting rib 701 that fits the notch of the stator core 200, and a fitting surface 702 that fits the tooth of the stator core 200 is provided between adjacent fitting ribs 701.
The invention also discloses an axial magnetic field motor which comprises the stator assembly. Because above-mentioned stator module has above beneficial effect, including above-mentioned stator module's axial magnetic field motor also has corresponding effect, and this place is no longer repeated.
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 stator assembly, comprising:
the stator core is arranged in the shell; the outer circular ring of the stator core and the shell enclose a first cooling space, and the inner circular ring of the stator core and the shell enclose a second cooling space;
n first spoilers disposed in the first cooling space, the plurality of first spoilers dividing the first cooling space into N outer ring cooling zones;
m second spoilers provided in the second cooling space, the plurality of second spoilers dividing the second cooling space into M inner ring cooling zones, wherein N-M is 1, the second spoilers being arranged in a staggered manner with respect to the first spoilers;
the oil guide grooves are arranged at the bottom of the shell, the inner ring cooling areas are communicated with the two adjacent outer ring cooling areas, and the M inner ring cooling areas, the N outer ring cooling areas and the corresponding oil guide grooves are sequentially communicated to form a cooling cycle; and
the oil inlet is communicated with an outer ring cooling area positioned at the head end of the cooling cycle, and the oil outlet is communicated with an outer ring cooling area positioned at the tail end of the cooling cycle.
2. The stator assembly of claim 1 wherein said stator core is enclosed within a space enclosed by said housing and said sealing cover plate by a sealing cover plate.
3. The stator assembly of claim 2 wherein the seal cover plate is secured to the housing by screws.
4. The stator assembly of claim 2, wherein one end of the sealing cover plate near the stator core is provided with matching ribs matched with the notches of the stator core, and matching surfaces matched with the teeth of the stator core are arranged between the adjacent matching ribs.
5. The stator assembly of claim 1 wherein the oil outlet of the housing is located at an end face of the housing.
6. The stator assembly of claim 1, wherein the number of oil-guiding slots is the same as the number of teeth of the stator core.
7. The stator assembly of claim 6, wherein the oil-guiding slots correspond to tooth slots of the stator core.
8. The stator assembly of claim 1, wherein the first spoilers are four in number and the second spoilers are three in number.
9. An axial field machine comprising a stator assembly according to any of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910209380.2A CN111725909A (en) | 2019-03-19 | 2019-03-19 | Stator module and axial magnetic field motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910209380.2A CN111725909A (en) | 2019-03-19 | 2019-03-19 | Stator module and axial magnetic field motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111725909A true CN111725909A (en) | 2020-09-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910209380.2A Pending CN111725909A (en) | 2019-03-19 | 2019-03-19 | Stator module and axial magnetic field motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111725909A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112671125A (en) * | 2020-12-30 | 2021-04-16 | 上海盘毂动力科技股份有限公司 | Disc type motor cooling structure and disc type motor |
| CN113794301A (en) * | 2021-08-09 | 2021-12-14 | 华为技术有限公司 | Axial flux motor and vehicle |
| WO2023151754A1 (en) * | 2022-02-14 | 2023-08-17 | Schaeffler Technologies AG & Co. KG | Axial flux machine, electric axle drivetrain, and motor vehicle |
-
2019
- 2019-03-19 CN CN201910209380.2A patent/CN111725909A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112671125A (en) * | 2020-12-30 | 2021-04-16 | 上海盘毂动力科技股份有限公司 | Disc type motor cooling structure and disc type motor |
| CN112671125B (en) * | 2020-12-30 | 2023-07-28 | 上海盘毂动力科技股份有限公司 | Disc motor cooling structure and disc motor |
| CN113794301A (en) * | 2021-08-09 | 2021-12-14 | 华为技术有限公司 | Axial flux motor and vehicle |
| CN113794301B (en) * | 2021-08-09 | 2023-03-10 | 华为数字能源技术有限公司 | Axial flux motor and vehicle |
| WO2023151754A1 (en) * | 2022-02-14 | 2023-08-17 | Schaeffler Technologies AG & Co. KG | Axial flux machine, electric axle drivetrain, and motor vehicle |
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