CN218783636U - Driving motor stator core cooling structure and driving motor - Google Patents
Driving motor stator core cooling structure and driving motor Download PDFInfo
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- CN218783636U CN218783636U CN202222843050.9U CN202222843050U CN218783636U CN 218783636 U CN218783636 U CN 218783636U CN 202222843050 U CN202222843050 U CN 202222843050U CN 218783636 U CN218783636 U CN 218783636U
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- oil injection
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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Abstract
The utility model discloses a cooling structure of a stator core of a driving motor, which comprises a shell, an iron core arranged in the shell and oil injection rings arranged at the two ends of the iron core, wherein the oil injection rings are provided with oil injection holes; the surface of the iron core is provided with the cooling liquid groove, the cooling liquid directly flows on the outer surface of the iron core to cool the internal winding, the cooling path is short, the transfer thermal resistance is small, the cooling effect is good, and the cooling liquid groove is particularly suitable for a high-power long iron core motor; the end part of the iron core is additionally provided with the oil injection ring, so that the cooling liquid is sprayed out from the oil injection hole of the oil injection ring to cool the end winding, and the cooling range is further expanded; the cooling liquid grooves are uniformly distributed along the circumferential direction of the iron core, so that the windings in the iron core can be cooled more uniformly, and high-heat nodes are avoided; additionally, the utility model discloses an iron core design is simple, and the processing degree of difficulty is low, and the manufacturing and low in manufacturing cost of being convenient for, convenient to popularize and use.
Description
Technical Field
The utility model relates to a new energy automobile field, in particular to driving motor stator core cooling structure and driving motor.
Background
The new energy automobile driving technology is developing towards high rotating speed, high power and miniaturization, and the requirements lead to the problems that the heat load of a driving motor is too high, and the insulation failure of the driving motor is easily caused by high temperature. To solve this problem, an oil-cooled motor with more efficient cooling needs to be adopted, and the design of the cooling system directly determines the performance of the motor in terms of continuous power, power density and the like.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a motor stator core cooling structure and driving motor, the cooling effect is good, accords with new energy automobile drive technology to high rotational speed, high power, miniaturized development demand.
In order to solve the technical problem, the utility model provides a pair of driving motor stator core cooling structure, include:
the outer surface of the iron core is provided with a cooling liquid groove along the axial direction of the iron core, and the cooling liquid groove extends from one end of the iron core to the other end of the iron core;
the oil injection rings are arranged at two ends of the iron core, and are provided with oil injection holes which are communicated along the thickness direction of the oil injection rings;
the oil injection ring is arranged on the outer surface of the iron core and is in contact with the part of the outer surface of the iron core, which is not provided with the cooling liquid groove, two ends of the shell extend to the end part of the oil injection ring and are in sealing connection with the end part of the oil injection ring, a gap along the circumferential direction is arranged between the oil injection ring and the shell, the gap is communicated with the cooling liquid groove, and cooling liquid flows into the gap from the cooling liquid groove and is sprayed out of the oil injection hole to a stator end winding.
Preferably, the outer surface of the iron core is provided with a plurality of cooling liquid grooves.
Preferably, the plurality of cooling liquid grooves are uniformly distributed along the circumferential direction of the outer surface of the iron core.
Preferably, an annular groove is formed in the inner wall of the housing along the circumferential direction, and the annular groove is communicated with the plurality of cooling liquid grooves.
Preferably, the annular groove is formed at an axially intermediate portion of the housing.
Preferably, the housing is opened with a cooling liquid inlet, and the cooling liquid inlet is communicated with the annular groove.
Preferably, the cross-sectional shape of the cooling liquid tank is rectangular or trapezoidal.
Preferably, the cooling liquid tank is formed by a stamping process.
In order to solve the technical problem, the utility model also provides a driving motor including aforementioned cooling structure.
The utility model discloses a set up the cooling cistern at the iron core surface, the coolant liquid directly flows at the iron core surface in order to cool down to internal winding, and the cooling path is short, and the transmission thermal resistance is little, and the cooling effect is good, is particularly suitable for high-power long iron core motor, simultaneously, because the cooling cistern has been set up to the iron core surface, has compressed the iron core diameter, has reduced the iron core cost; the end part of the iron core is additionally provided with the oil injection ring, so that the cooling liquid is sprayed out from the oil injection hole of the oil injection ring to cool the end winding, and the cooling range is further expanded; the cooling liquid grooves are uniformly distributed along the circumferential direction of the iron core, so that the windings in the iron core can be cooled more uniformly, and high-heat nodes are avoided; additionally, the utility model discloses an iron core design is simple, and the processing degree of difficulty is low, and the manufacturing and low in manufacturing cost of being convenient for, convenient to popularize and use.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings required for the present invention are briefly introduced below, and 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 these drawings without creative efforts.
Fig. 1 is a partial sectional view of an embodiment of a stator core cooling structure of a driving motor according to the present invention;
fig. 2 is an axial sectional view of an embodiment of a stator core cooling structure of a driving motor according to the present invention;
FIG. 3 is an enlarged view at A in FIG. 2;
fig. 4 is a radial cross-sectional view of an embodiment of a stator core cooling structure of a driving motor according to the present invention;
in the figure, 1-iron core; 11-a cooling liquid tank; 2-oil spraying ring; 21-oil spray holes; 3-a shell; 31-a ring groove; 32-coolant inlet; 4-a gap; 5-end winding.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments, but not all embodiments, of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1 and 2, a cooling structure for a stator core of a driving motor according to the present invention is shown, including:
the outer surface of the iron core is provided with a cooling liquid groove along the axial direction of the iron core, and the cooling liquid groove extends from one end of the iron core to the other end of the iron core;
the oil injection rings are arranged at two ends of the iron core, and are provided with oil injection holes which are communicated along the thickness direction of the oil injection rings;
the oil injection ring is arranged on the outer surface of the iron core and is in contact with the part of the outer surface of the iron core, which is not provided with the cooling liquid groove, two ends of the shell extend to the end part of the oil injection ring and are in sealing connection with the end part of the oil injection ring, a gap along the circumferential direction is formed between the oil injection ring and the shell, the gap is communicated with the cooling liquid groove, and cooling liquid flows into the gap from the cooling liquid groove and is sprayed out of the oil injection hole to a stator end winding.
In the embodiment of the utility model, the cooling liquid groove is arranged along the surface of the iron core, the cooling of the winding inside the iron core is completed when the cooling liquid flows in the cooling liquid groove on the surface of the iron core, the cooling path is short, the transfer thermal resistance is small, the cooling effect is good, and the cooling liquid groove is particularly suitable for a high-power long iron core motor; meanwhile, the cooling liquid groove is formed in the surface of the iron core, so that the diameter of the iron core is reduced, the size of the iron core is reduced, and the cost of the iron core is reduced. The part of the surface of the iron core, which is not provided with the cooling liquid groove, is abutted against the shell to form a sealed and fastened connecting structure, and understandably, the shell and the iron core can be in interference fit. The oil injection ring is arranged at two ends of the iron core, namely the two ends of the iron core are provided with the oil injection rings, the shell extends towards the two ends of the iron core so that the oil injection rings are covered in the shell and are in sealed connection with the ends of the oil injection rings, as shown in figure 3; the outer diameter of the oil injection ring is smaller than the inner diameter of the shell, namely a gap can be formed between the oil injection ring and the inner wall of the shell, the cooling liquid groove is communicated with the gap, the oil injection ring is provided with an oil injection hole, and cooling liquid flowing to the gap is sprayed out of the oil injection hole to the end winding at the end part of the iron core so as to cool the end winding. The embodiment of the utility model provides a cooling structure can accomplish the cooling to winding and tip simultaneously, and the cooling effect is good, simultaneously, because the cooling cistern axial runs through the iron core, promptly, each towards the shape of piece the same, its design is simple and the processing degree of difficulty is low.
In a specific embodiment, referring to fig. 4, a plurality of cooling liquid grooves are opened on the outer surface of the iron core; preferably, the plurality of cooling liquid grooves are uniformly distributed along the circumferential direction of the outer surface of the iron core. Understandably, the cooling liquid grooves which are uniformly distributed have more uniform cooling effect on the windings inside the iron core, and high-heat nodes can be effectively avoided.
In a specific embodiment, an annular groove is formed on the inner wall of the shell along the circumferential direction, and the annular groove is communicated with the plurality of cooling liquid grooves; preferably, the annular groove is formed at an axially intermediate portion of the housing; more preferably, the housing is opened with a cooling liquid inlet, and the cooling liquid inlet is communicated with the ring groove. The flow path of the cooling liquid is as follows: the cooling liquid enters the annular grooves from the cooling liquid inlet, the annular grooves distribute the cooling liquid to the cooling liquid grooves, and the cooling liquid flows towards the direction of the oil injection ring at the end part in the cooling liquid grooves, flows to a gap formed by the oil injection ring and the shell and then is injected from the oil injection hole.
In a specific embodiment, the cross-sectional shape of the cooling liquid tank is rectangular or trapezoidal; preferably, the shape of the cooling liquid groove can be punched on the punching sheet by adopting a punching process.
The utility model also provides a driving motor, this driving motor contain the cooling structure in the aforesaid scheme, consequently, possess all beneficial effects that the aforesaid scheme brought at least.
To sum up, the utility model discloses a set up the cooling cistern at the iron core surface, the coolant liquid directly flows at the iron core surface in order to cool down internal winding, and the cooling route is short, and the transfer thermal resistance is little, and the cooling effect is good, is particularly suitable for high-power long iron core motor, and the cooling cistern has been seted up on the iron core surface, and simultaneously, the iron core diameter has been compressed, has reduced the iron core cost; the end part of the iron core is additionally provided with the oil injection ring, so that the cooling liquid is sprayed out from the oil injection hole of the oil injection ring to cool the end winding, and the cooling range is further expanded; the cooling liquid grooves are uniformly distributed along the circumferential direction of the iron core, so that the windings in the iron core can be cooled more uniformly, and high-heat nodes are avoided; additionally, the utility model discloses an iron core design is simple, and the processing degree of difficulty is low, and the manufacturing and low in manufacturing cost of being convenient for, convenient to popularize and use.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A drive motor stator core cooling structure, comprising:
the outer surface of the iron core is provided with a cooling liquid tank along the axial direction of the iron core, and the cooling liquid tank extends from one end of the iron core to the other end of the iron core;
the oil injection rings are arranged at two ends of the iron core, and are provided with oil injection holes which are communicated along the thickness direction of the oil injection rings;
the oil injection ring is arranged on the outer surface of the iron core and is in contact with the part of the outer surface of the iron core, which is not provided with the cooling liquid groove, two ends of the shell extend to the end part of the oil injection ring and are in sealing connection with the end part of the oil injection ring, a gap along the circumferential direction is arranged between the oil injection ring and the shell, the gap is communicated with the cooling liquid groove, and cooling liquid flows into the gap from the cooling liquid groove and is sprayed out of the oil injection hole to a stator end winding.
2. The cooling structure according to claim 1, wherein a plurality of cooling liquid grooves are formed in an outer surface of the core.
3. The cooling structure according to claim 2, wherein the plurality of cooling liquid grooves are uniformly distributed in a circumferential direction of the outer surface of the core.
4. The cooling structure according to claim 2, wherein a ring groove is formed in the inner wall of the housing in the circumferential direction, and the ring groove communicates with the plurality of cooling liquid grooves.
5. The cooling structure according to claim 4, wherein the annular groove is formed at an axially intermediate portion of the housing.
6. The cooling structure of claim 4, wherein the housing defines a coolant inlet, the coolant inlet communicating with the ring groove.
7. The cooling structure according to claim 1, wherein the cross-sectional shape of the cooling liquid tank is rectangular or trapezoidal.
8. The cooling structure of claim 1, wherein the cooling fluid bath is formed by a stamping process.
9. A driving motor comprising the cooling structure according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222843050.9U CN218783636U (en) | 2022-10-27 | 2022-10-27 | Driving motor stator core cooling structure and driving motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222843050.9U CN218783636U (en) | 2022-10-27 | 2022-10-27 | Driving motor stator core cooling structure and driving motor |
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| Publication Number | Publication Date |
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| CN218783636U true CN218783636U (en) | 2023-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222843050.9U Active CN218783636U (en) | 2022-10-27 | 2022-10-27 | Driving motor stator core cooling structure and driving motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116054441A (en) * | 2023-04-01 | 2023-05-02 | 博格华纳汽车零部件（武汉）有限公司 | Driving motor stator oil cooling structure and oil cooling method thereof |
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2022
- 2022-10-27 CN CN202222843050.9U patent/CN218783636U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116054441A (en) * | 2023-04-01 | 2023-05-02 | 博格华纳汽车零部件（武汉）有限公司 | Driving motor stator oil cooling structure and oil cooling method thereof |
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