CN112186920A - Disc type motor cooling structure - Google Patents
Disc type motor cooling structure Download PDFInfo
- Publication number
- CN112186920A CN112186920A CN202011195375.XA CN202011195375A CN112186920A CN 112186920 A CN112186920 A CN 112186920A CN 202011195375 A CN202011195375 A CN 202011195375A CN 112186920 A CN112186920 A CN 112186920A
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- stator
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- plate
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- cooling structure
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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
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/24—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention discloses a disc type motor cooling structure which comprises a stator core, a stator shell, a first separation plate, a second separation plate, a first coil, a second coil and a separation plate, wherein the separation plate is arranged between the first coil and the second coil, and a third cooling channel for communicating a first cavity and a second cavity is arranged between adjacent stator monomers. By adopting the cooling structure of the disc type motor, the liquid refrigerant can be in full contact with core heat-generating components such as the stator core, the first coil and the second coil for heat exchange, so that the heat dissipation efficiency of the disc type motor is improved, and the service life of the disc type motor is prolonged.
Description
Technical Field
The invention relates to the technical field of heat dissipation of disc type motors, in particular to a cooling structure of a disc type motor.
Background
In order to improve the operating efficiency of the disc motor, it is necessary to design a cooling system for the disc motor. The cooling system mainly comprises two types, one type is air cooling, and the other type 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 part, so that the cooling efficiency is low, and the service life of the disc type motor is influenced.
Therefore, how to prolong the service life of the disc motor becomes a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
The invention aims to provide a cooling structure of a disc type motor, which is used for prolonging the service life of the disc type motor.
To achieve the above object, the present invention provides a cooling structure of a disc motor, comprising:
a stator core having a plurality of stator cells;
the stator shell seals the stator core, a first cavity is defined by the stator shell and the outside of the stator core, a second cavity is defined by the stator shell and the inside of the stator core, a liquid inlet channel, a liquid outlet channel, a liquid inlet, a liquid outlet, a liquid spraying port and a liquid returning port are arranged on the stator shell, the liquid inlet channel is communicated with the liquid inlet and the liquid spraying port, and the liquid outlet channel is communicated with the liquid outlet and the liquid returning port;
the first cavity is isolated into a first cooling channel and a second cooling channel by the first barrier plate and the second barrier plate, the first cooling channel is communicated with the liquid outlet, and the second cooling channel is communicated with the liquid return port;
the first coils and the second coils are arranged on the stator single bodies, the first coils on the adjacent stator single bodies are tightly matched, and the second coils on the adjacent stator single bodies are tightly matched;
and a third cooling channel communicated with the first cavity and the second cavity is arranged between the adjacent stator monomers.
In one embodiment of the present invention, the partition plate includes a first partition plate disposed outside the stator unit and a second partition plate disposed inside the stator unit.
In one embodiment of the present invention, the first partition plate has a width smaller than that of the outer portion of the stator unit.
In one embodiment of the present invention, the first partition plate is fixed to the first coil and the second coil.
In one embodiment of the present invention, the width of the second partition plate is smaller than the width of the inside of the stator unit.
In one embodiment of the present invention, the second partition plate is fixed to the first coil and the second coil.
In one embodiment of the present invention, the stator housing includes a stator outer shell, a stator inner shell, a front stator plate and a rear stator plate, the stator outer shell has a stator core interposed between the stator outer shell and the stator inner shell, the front stator plate is disposed on a first end surface of the stator outer shell, the rear stator plate is disposed on a second end surface of the stator outer shell, and the stator outer shell, an exterior of the stator core, the front stator plate and the rear stator plate form the first cavity; the stator inner shell, the interior of the stator core, the front stator plate and the rear stator plate form the second cavity.
In one embodiment of the present invention, one or more of the liquid inlet, the liquid outlet, the liquid spraying port and the liquid returning port is disposed on the stator outer shell, the stator inner shell, the front stator plate or the rear stator plate.
In one embodiment of the present invention, the number of the liquid ejecting ports is multiple, and each of the liquid ejecting ports corresponds to the middle portion of the stator unit.
In one embodiment of the invention, the stator core is a segmented core.
By adopting the disc type motor cooling structure, liquid refrigerant enters the liquid inlet channel from the liquid inlet and enters the first cooling channel through the oil nozzle; the liquid refrigerant entering the first cooling channel exchanges heat with the first coil and the second coil outside the stator core, then enters the third cooling channel, exchanges heat with the first coil and the second coil on the stator monomer corresponding to the third cooling channel, enters the second cavity, exchanges heat with the first coil and the second coil inside the stator core, then enters the third channel, exchanges heat with the first coil and the second coil on the stator monomer corresponding to the third cooling channel, enters the second cooling channel, exchanges heat with the first coil and the second coil outside the stator core, enters the liquid outlet channel through the liquid return port, and flows out of the liquid outlet. Therefore, in the process, the liquid refrigerant can be in direct contact heat exchange with core heat-generating components such as the stator core, the first coil and the second coil, so that the heat dissipation efficiency of the disc motor is improved, and the service life of the disc 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 embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic perspective view of a cooling structure of a disc motor according to an embodiment of the present invention;
fig. 2 is a partially enlarged schematic view of a cooling structure of a disc motor according to an embodiment of the present invention;
fig. 3 is an exploded view of a cooling structure of a disc motor according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a cooling structure of a disc motor according to an embodiment of the present invention.
Wherein: 100 is a stator core, 200 is a stator shell, 300 is a first baffle plate, 400 is a second baffle plate, 500 is a first coil, 600 is a second coil, 700 is a separation plate, 800 is a first cavity, 900 is a second cavity, 101 is a stator monomer, 201 is a liquid inlet, 202 is a liquid outlet, 203 is a liquid inlet channel, 204 is a liquid outlet channel, 205 is a liquid spraying port, 206 is a liquid return port, 701 is a first separation plate, 702 is a second separation plate, 801 is a first cooling channel, and 802 is a second cooling channel;
200-1 is a stator outer shell, 200-2 is a stator inner shell, 200-3 is a front stator plate, and 200-4 is a rear stator plate.
Detailed Description
The core of the invention is to provide a cooling structure of a disc type motor so as to prolong the service life of the disc type motor.
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and embodiments.
Referring to fig. 1 to 4, the cooling structure of a disc motor disclosed in the present invention includes a stator core 100, a stator housing 200, a first barrier plate 300, a second barrier plate 400, a first coil 500, a second coil 600, and a partition plate 700, wherein the stator core 100 has a plurality of stator units 101; the stator shell 200 seals the stator core 100, the stator shell 200 and the outside of the stator core 100 enclose a first cavity 800, the stator shell 200 and the inside of the stator core 100 enclose a second cavity 900, the stator shell 200 is provided with a liquid inlet channel 203, a liquid outlet channel 204, a liquid inlet 201, a liquid outlet 202, a liquid spraying port 205 and a liquid returning port 206, the liquid inlet channel 203 is communicated with the liquid inlet 201 and the liquid spraying port 205, and the liquid outlet channel 204 is communicated with the liquid outlet 202 and the liquid returning port 206; the first barrier plate 300 and the second barrier plate 400 are arranged between the outside of the stator core 100 and the stator housing 200, the first cavity 800 is isolated into a first cooling channel 801 and a second cooling channel 802 by the first barrier plate 300 and the second barrier plate 400, the first cooling channel 801 is communicated with the liquid outlet 202, and the second cooling channel 802 is communicated with the liquid return port 206; the first coil 500 and the second coil 600 are arranged on the stator units 101, the first coil 500 on the adjacent stator unit 101 is tightly matched, and the second coil 600 on the adjacent stator unit 101 is tightly matched; the partition plate 700 is interposed between the first and second coils 500 and 600, and a third cooling passage communicating the first and second cavities 800 and 900 is provided between the adjacent stator units 101.
By adopting the disc type motor cooling structure, liquid refrigerant enters the liquid inlet channel 203 from the liquid inlet 201 and enters the first cooling channel 801 through the oil nozzle; the liquid refrigerant introduced into the first cooling passage 801 exchanges heat with the first and second coils 500 and 600 outside the stator core 100, then enters the third cooling channel, exchanges heat with the first coil 500 and the second coil 600 on the stator unit 101 corresponding to the third cooling channel, and then enters the second cavity 900, the liquid refrigerant in the second cavity 900 exchanges heat with the first coil 500 and the second coil 600 inside the stator core 100, and then passes through the third channel, and exchanges heat with the first coil 500 and the second coil 600 on the stator unit 101 corresponding to the third cold channel, and then enters the second cooling channel 802, the liquid refrigerant entering the second cooling channel 802 exchanges heat with the first coil 500 and the second coil 600 outside the stator core 100, and then enters the liquid outlet channel 204 through the liquid return port 206 and flows out of the liquid outlet port 202. Therefore, in the process, the liquid refrigerant can be in direct contact heat exchange with core heat-generating components such as the stator core 100, the first coil 500 and the second coil 600, so that the heat dissipation efficiency of the disc motor is improved, and the service life of the disc motor is prolonged.
The partition plate 700 is used to partition the first coil 500 and the second coil 600, so that a third cooling channel is formed between the first coil 500, the second coil 600 and the stator unit 101, and core heat generating components such as the stator unit 101, the first coil 500 and the second coil 600 around the third cooling channel are radiated through the third cooling channel. The thicknesses of the first coil 500 and the second coil 600 may be equal or different, and in order to improve the cooling effect of the stator core 100, the thicknesses of the first coil 500 and the second coil 600 are equal.
In order to reduce the occupied volume of the partition plate 700 and increase the sectional area of the third cooling passage, the contact area of the stator unit 101, the first coil 500, and the second coil 600 with the third cooling passage. The partition plate 700 includes a first partition plate 701 and a second partition plate 702, wherein the first partition plate 701 is disposed outside the stator unit 101, and the second partition plate 702 is disposed inside the stator unit 101. The first and second partition plates 701 and 702 have a cubic structure, and any structure capable of partitioning the first and second coils 500 and 600 may be understood as the partition plate 700.
The width of the first partition plate 701 is greater than or equal to the width of the outside of the stator unit 101. It is within the scope of the present invention to form the third cooling passage between the adjacent stator units 101. The width of the optional first partition plate 701 is smaller than the width of the outer part of the stator unit 101, which not only can reduce the consumption of the first partition plate 701, but also can increase the effective contact area between the stator unit 101 and the third cooling channel.
The first partition plate 701 is fixed to the first coil 500 and the second coil 600, or the first partition plate 701 is fixed to the stator unit 101, wherein the fixing of the first partition plate 701 to the first coil 500, the second coil 600, or the stator unit 101 may be achieved in the form of bonding.
The width of the second partition plate 702 is greater than or equal to the width of the interior of the stator unit 101. It is within the scope of the present invention to form the third cooling passage between the adjacent stator units 101. The width of the optional second partition plate 702 is smaller than the width of the exterior of the stator unit 101, which not only reduces the consumption of the second partition plate 702, but also increases the effective contact area between the stator unit 101 and the third cooling channel.
The second separation plate 702 is fixed to the first coil 500 and the second coil 600, or the second separation plate 702 is fixed to the stator unit 101, wherein the second separation plate 702 is fixed to the first coil 500, the second coil 600, or the stator unit 101 may be bonded.
It should be noted that, the thickness and the width can be understood as follows, in the overall description of the stator core 100, the axial direction of the stator core 100 is the thickness, the peripheral surface of the stator core 100 is the width, the thickness of the stator unit 101 is the distance between the upper end surface and the lower end surface of the stator unit 101 in the axial direction, and the width of the stator unit 101 is the distance between two side surfaces of the stator unit 101, because the stator unit 101 is of a trapezoid-like structure, the distance between two side surfaces of the stator unit 101 near the axial center of the stator core 100 is smaller, and the distance between two side surfaces of the stator unit 101 far away from the axial center of the stator core 100 is larger.
The stator housing 200 is used for mounting the stator core 100, wherein the stator housing 200 comprises a stator outer shell 200-1, a stator inner shell 200-2, a front stator plate 200-3 and a rear stator plate 200-4, the stator core 100 is arranged between the stator outer shell and the stator inner shell 200-2, the front stator plate 200-3 is arranged at a first end face of the stator outer shell 200-1, the rear stator plate 200-4 is arranged at a second end face of the stator outer shell 200-1, and the stator outer shell 200-1, the outside of the stator core 100, the front stator plate 200-3 and the rear stator plate 200-4 form a first cavity 800; the stator inner case 200-2, the inside of the stator core 100, the front stator plate 200-3 and the rear stator plate 200-4 form a second cavity 900. The above is only one of the structural forms of the stator housing 200, and any structure capable of sealing the stator core 100 may be used as the stator housing 200, and the embodiment of the present invention is not specifically described herein.
In the above structure, one or more of the liquid inlet 201, the liquid outlet 202, the liquid spray port 205, and the liquid return port 206 are provided on the stator outer shell 200-1, the stator inner shell 200-2, the front stator plate 200-3, or the rear stator plate 200-4. It is understood herein that the liquid inlet 201, the liquid outlet 202, the liquid spray opening 205 and the liquid return opening 206 may be provided on the stator outer shell 200-1 at the same time, or on the stator inner shell 200-2 at the same time, or on the front stator plate 200-3 at the same time, or on the rear stator plate 200-4 at the same time; two of the liquid inlet 201, the liquid outlet 202, the liquid spraying port 205 and the liquid returning port 206 are simultaneously arranged on the stator outer shell 200-1, or simultaneously arranged on the stator inner shell 200-2, or simultaneously arranged on the front stator plate 200-3, or simultaneously arranged on the rear stator plate 200-4; three of the liquid inlet 201, the liquid outlet 202, the liquid spraying port 205 and the liquid returning port 206 are simultaneously arranged on the stator outer shell 200-1, or simultaneously arranged on the stator inner shell 200-2, or simultaneously arranged on the front stator plate 200-3, or simultaneously arranged on the rear stator plate 200-4. Of course, the liquid inlet 201, the liquid outlet 202, the liquid ejecting port 205 and the liquid returning port 206 may be provided across the components, for example, a part of the liquid inlet passage 203 is provided on the stator housing 200-1, a part of the liquid inlet passage 203 is provided on the front stator plate 200-3, a part of the liquid outlet passage 204 is provided on the stator housing 200-1, and a part of the liquid outlet passage 204 is provided on the front stator plate 200-3. In the illustration, the inlet port 201, the outlet port 202, the spray port 205 and the return port 206 are all disposed on the stator housing 200-1.
In one embodiment of the present invention, the number of the liquid ejecting ports 205 is multiple, and each liquid ejecting port 205 corresponds to the middle of the stator unit 101; or each liquid jet 205 corresponds to the third cooling channel, in order to prolong the residence time of the liquid refrigerant in the first cooling channel 801, the liquid jet 205 in the invention corresponds to the middle part of the stator single body 101, when the liquid refrigerant enters the first cooling channel 801 through the liquid jet 205, the liquid refrigerant is firstly jetted onto the stator single body 101 when the pressure is larger, and then flows towards two sides under the action of reflection of the stator single body 101, thereby prolonging the residence time of the liquid refrigerant in the first cooling channel 801, and improving the heat dissipation efficiency.
The stator core 100 is a segment core or an integral core.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
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 (10)
1. A disc motor cooling structure, comprising:
a stator core having a plurality of stator cells;
the stator shell seals the stator core, a first cavity is defined by the stator shell and the outside of the stator core, a second cavity is defined by the stator shell and the inside of the stator core, a liquid inlet channel, a liquid outlet channel, a liquid inlet, a liquid outlet, a liquid spraying port and a liquid returning port are arranged on the stator shell, the liquid inlet channel is communicated with the liquid inlet and the liquid spraying port, and the liquid outlet channel is communicated with the liquid outlet and the liquid returning port;
the first cavity is isolated into a first cooling channel and a second cooling channel by the first barrier plate and the second barrier plate, the first cooling channel is communicated with the liquid outlet, and the second cooling channel is communicated with the liquid return port;
the first coils and the second coils are arranged on the stator single bodies, the first coils on the adjacent stator single bodies are tightly matched, and the second coils on the adjacent stator single bodies are tightly matched;
and a third cooling channel communicated with the first cavity and the second cavity is arranged between the adjacent stator monomers.
2. The disc motor cooling structure according to claim 1, wherein the partition plate includes a first partition plate and a second partition plate, wherein the first partition plate is provided outside the stator unit body, and the second partition plate is provided inside the stator unit body.
3. The disc motor cooling structure according to claim 2, wherein the first partition plate has a width smaller than that of the outer portion of the stator unit.
4. The disc motor cooling structure according to claim 3, wherein the first partition plate is fixed to the first coil and the second coil.
5. The disc motor cooling structure according to claim 2, wherein the width of the second partition plate is smaller than the width of the inside of the stator unit.
6. The disc motor cooling structure according to claim 5, wherein the second partition plate is fixed to the first coil and the second coil.
7. The disc motor cooling structure according to claim 1, wherein the stator housing includes a stator outer shell, a stator inner shell, a front stator plate and a rear stator plate, the stator core is interposed between the stator outer shell and the stator inner shell, the front stator plate is provided at a first end surface of the stator outer shell, the rear stator plate is provided at a second end surface of the stator outer shell, and the stator outer shell, an outside of the stator core, the front stator plate and the rear stator plate form the first cavity; the stator inner shell, the interior of the stator core, the front stator plate and the rear stator plate form the second cavity.
8. The disc motor cooling structure according to claim 7, wherein one or more of the liquid inlet, the liquid outlet, the liquid ejecting port, and the liquid returning port is provided on the stator outer shell, the stator inner shell, the front stator plate, or the rear stator plate.
9. The disc motor cooling structure according to claim 8, wherein the number of the liquid ejection ports is plural, and each of the liquid ejection ports corresponds to a middle portion of the stator unit.
10. The disc motor cooling structure according to any one of claims 1 to 9, wherein the stator core is a segment core.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011195375.XA CN112186920A (en) | 2020-10-30 | 2020-10-30 | Disc type motor cooling structure |
| PCT/CN2021/072814 WO2022088527A1 (en) | 2020-10-30 | 2021-01-20 | Cooling structure for disc-type motor |
| EP21884272.2A EP4239854A1 (en) | 2020-10-30 | 2021-01-20 | Cooling structure for disc-type motor |
| US18/250,729 US20230396105A1 (en) | 2020-10-30 | 2021-01-20 | Cooling structure for disc-type motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011195375.XA CN112186920A (en) | 2020-10-30 | 2020-10-30 | Disc type motor cooling structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112186920A true CN112186920A (en) | 2021-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011195375.XA Pending CN112186920A (en) | 2020-10-30 | 2020-10-30 | Disc type motor cooling structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112186920A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022088527A1 (en) * | 2020-10-30 | 2022-05-05 | 上海盘毂动力科技股份有限公司 | Cooling structure for disc-type motor |
-
2020
- 2020-10-30 CN CN202011195375.XA patent/CN112186920A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022088527A1 (en) * | 2020-10-30 | 2022-05-05 | 上海盘毂动力科技股份有限公司 | Cooling structure for disc-type motor |
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