CN216751437U - Oil-cooled motor cooling system - Google Patents
Oil-cooled motor cooling system Download PDFInfo
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- CN216751437U CN216751437U CN202123000157.9U CN202123000157U CN216751437U CN 216751437 U CN216751437 U CN 216751437U CN 202123000157 U CN202123000157 U CN 202123000157U CN 216751437 U CN216751437 U CN 216751437U
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- oil
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- hollow shaft
- end cover
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Abstract
The utility model discloses an oil-cooled motor cooling system, which comprises a hollow shaft, an end cover, an end winding, a stator core, a casing and a rotor core; the two end covers are respectively arranged at two ends of the shell, two ends of the hollow shaft are respectively arranged at the central positions of the two end covers through bearings, the rotor core is arranged on the hollow shaft, and the hollow shaft is provided with a hollow shaft oil inlet arranged along the axial direction and a hollow shaft oil injection hole arranged along the radial direction; the oil inlet of the hollow shaft is a blind hole and is communicated with the oil injection hole of the hollow shaft; the winding is embedded in the groove of the stator core, the winding outside the stator core is an end winding, and the bottom of the machine shell is provided with an oil outlet. The utility model has simple structure and low cost; the utility model discloses an inside and outside and side of end winding all have the coolant oil spray cooling, and the cooling effect is good.
Description
Technical Field
The utility model belongs to the technical field of the motor, concretely relates to oil-cooling motor cooling system.
Background
Along with the development of electric automobiles, the motor requirements of the electric automobiles are higher and higher, the high power density and the high torque density enable the size of the motor to be smaller and smaller, the generated heat is concentrated, the conventional air cooling and water cooling cannot meet the requirements due to limited cooling effect of indirect cooling of a heat source, and oil can directly cool the heat source due to non-magnetic and non-conductive properties, so that the cooling effect is good.
Disclosure of Invention
In order to solve the technical problem, the utility model provides a simple structure, it is with low costs, the oil-cooling motor cooling system that the cooling effect is good.
The technical scheme of the utility model is that: a cooling system of an oil-cooled motor comprises a hollow shaft, an end cover, an end winding, a stator core, a shell and a rotor core; the two end covers are respectively arranged at two ends of the shell, two ends of the hollow shaft are respectively arranged at the central positions of the two end covers through bearings, the rotor core is arranged on the hollow shaft, and the hollow shaft is provided with a hollow shaft oil inlet arranged along the axial direction and a hollow shaft oil injection hole arranged along the radial direction; the oil inlet of the hollow shaft is a blind hole and is communicated with the oil injection hole of the hollow shaft; the winding is embedded in the groove of the stator core, the winding outside the stator core is an end winding, and the bottom of the machine shell is provided with an oil outlet.
Furthermore, a shell oil inlet, a shell oil passing hole, a shell circumferential oil groove and a shell oil injection hole are formed in the shell, the shell oil passing hole is formed in the shell along the axial direction of the shell, and the shell circumferential oil groove is arc-shaped and is formed in the shell along the axial direction of the shell; the shell oil passing hole is communicated with the shell oil inlet and the shell circumferential oil groove; and a plurality of shell oil injection holes are formed in the inner wall of the shell circumferential oil groove and communicated with the inner cavity of the shell.
Furthermore, an end cover oil groove and an end cover oil passing hole are formed in the end cover; the oil passing hole of the end cover is arranged along the radial direction of the end cover, the oil groove of the end cover is annular, the oil passing hole of the end cover is communicated with the oil passing hole of the shell and the oil groove of the end cover, and the inner wall of the oil groove of the end cover is provided with an oil spraying hole of the end cover communicated with the inner cavity of the shell.
Further, the hollow shaft and the rotor core are in interference fit.
The utility model discloses following beneficial effect has:
1. the utility model has simple structure and low cost; the cooling oil spray cooling is arranged on the inner side, the outer side and the side surface of the end winding of the utility model, and the cooling effect is good;
2. the utility model discloses a casing oil groove is the arc recess, and the nozzle opening is located stator core first half, and cooperation oil pressure and gravity cooling can reduce the oil pressure loss.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a sectional view of the housing of the present invention.
Fig. 3 is a cross-sectional view of the end cap of the present invention.
In the figure:
a hollow shaft 1; an end cap 2; an end winding 3; a stator core 4; a housing 5; a rotor core 6; a bearing 7; a hollow shaft oil inlet 101; a hollow shaft injector hole 102; end cover oil grooves 201; an end cover oil passing hole 202; the end cover oil passing hole 203; an oil hole 501 is arranged on the machine shell; a housing oil inlet 502; a casing circumferential oil groove 503; case spray holes 504; an oil outlet 505.
Detailed Description
The scheme of the present invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, the present invention includes a hollow shaft 1, an end cap 2, an end winding 3, a stator core 4, a casing 5, and a rotor core 6. Two end covers 2 are respectively arranged at two ends of the machine shell 5. A shell oil inlet 502, a shell oil passing hole 501, a shell circumferential oil groove 503 and a shell oil injection hole 504 are formed in the shell 5, the shell oil passing hole 501 is arranged along the axial direction of the shell, and the shell circumferential oil groove 503 is arc-shaped and is arranged along the circumferential direction of the shell 5; the shell oil passing hole 501 is communicated with a shell oil inlet 502 and a shell circumferential oil groove 503. The inner wall of the circumferential oil groove 503 of the shell 5 is provided with a plurality of shell oil injection holes 504, and the oil injection holes 504 are communicated with the inner cavity of the shell.
The casing oil inlet 502 is located at the top of the casing, and the flow of the cooling oil can meet the requirements of a casing cooling circuit and an end cover cooling circuit at the same time by controlling the size of the casing oil inlet 502. Casing circumference oil groove 503 is one section arc recess, is located stator core 4 first half, and control casing circumference oil groove 503's angle size makes the cooling oil cool off more winding outsides under the action of gravity, enlarges the cooling area, improves the cooling effect. Be equipped with casing nozzle opening 504 on casing circumference oil groove 503, can realize good cooling effect through quantity and the size of control casing nozzle opening 504. Two oil outlets 505 are arranged at the bottom of the machine shell, and the two oil outlets 505 are respectively positioned at two sides of the stator core 4 and used for recovering cooling oil.
The end cover 2 is provided with an end cover oil groove 201 and an end cover oil passing hole 202; the end cover oil passing hole 202 is arranged along the radial direction of the end cover, the end cover oil groove 201 is annular, the end cover oil passing hole 202 is communicated with the machine shell oil passing hole 501 and the end cover oil groove 201, and an end cover oil spraying hole 203 communicated with the inner cavity of the shell 5 is arranged on the inner wall of the end cover oil groove 201. And the end cover oil spray holes 203 are positioned at two sides of the rotor core 6 and are used for cooling the side surfaces of the windings.
Two ends of a hollow shaft 1 are arranged at the central positions of two end covers 2 through bearings 7, a rotor core 6 is in interference fit with the hollow shaft, and the hollow shaft 1 is provided with a hollow shaft oil inlet 101 arranged along the axial direction and a hollow shaft oil injection hole 102 arranged along the radial direction; the hollow shaft oil inlet 101 is a blind hole, and the hollow shaft oil inlet 101 is communicated with the hollow shaft oil injection hole 102. The windings are embedded in the slots of the stator core 4, and the windings of the stator core 4 are end windings. The cooling oil fills hollow shaft oil inlet 101, cools off the winding inboard through hollow shaft nozzle 102, and the nozzle is evenly distributed along circumference on the hollow shaft, and under the effect of centrifugal force and oil pressure, the winding can evenly be cooled off to the cooling oil.
It should be noted that the above-mentioned are only preferred embodiments of the present invention for explaining or explaining the technical solution of the present invention, and not limiting the same. Not deviating the utility model discloses a under the technical scheme's the condition, direct or indirect application all is included in other technical field the utility model discloses a within the range of protection from the patent.
Claims (4)
1. The utility model provides an oil-cooled motor cooling system which characterized in that: the motor comprises a hollow shaft (1), an end cover (2), an end winding (3), a stator core (4), a casing (5) and a rotor core (6); the two end covers (2) are respectively arranged at two ends of the shell (5), two ends of the hollow shaft (1) are arranged at the central positions of the two end covers (2) through bearings (7), the rotor iron core (6) is arranged on the hollow shaft, and the hollow shaft (1) is provided with a hollow shaft oil inlet (101) arranged along the axial direction and a hollow shaft oil injection hole (102) arranged along the radial direction; the hollow shaft oil inlet (101) is a blind hole, and the hollow shaft oil inlet (101) is communicated with the hollow shaft oil injection hole (102); the winding is embedded in a groove of the stator core (4), the winding outside the stator core (4) is an end winding (3), and an oil outlet (505) is formed in the bottom of the shell (5).
2. The oil cooled machine cooling system of claim 1, wherein: a shell oil inlet (502), a shell oil passing hole (501), a shell circumferential oil groove (503) and a shell oil spraying hole (504) are formed in the shell (5), the shell oil passing hole (501) is formed in the axial direction of the shell, and the shell circumferential oil groove (503) is arc-shaped and is formed in the circumferential direction of the shell; the shell oil passing hole (501) is communicated with a shell oil inlet (502) and a shell circumferential oil groove (503); the inner wall of the circumferential oil groove (503) of the shell is provided with a plurality of shell oil injection holes (504), and the oil injection holes (504) are communicated with the inner cavity of the shell.
3. The oil cooled machine cooling system of claim 2, wherein: an end cover oil groove (201) and an end cover oil passing hole (202) are arranged on the end cover (2); the end cover oil passing hole (202) is arranged along the radial direction of the end cover, the end cover oil groove (201) is annular, the end cover oil passing hole (202) is communicated with the machine shell oil passing hole (501) and the end cover oil groove (201), and an end cover oil spraying hole (203) communicated with the inner cavity of the machine shell (5) is formed in the inner wall of the end cover oil groove (201).
4. The oil cooled machine cooling system of claim 1, wherein: the hollow shaft (1) and the rotor iron core (6) are in interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123000157.9U CN216751437U (en) | 2021-12-02 | 2021-12-02 | Oil-cooled motor cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123000157.9U CN216751437U (en) | 2021-12-02 | 2021-12-02 | Oil-cooled motor cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216751437U true CN216751437U (en) | 2022-06-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123000157.9U Active CN216751437U (en) | 2021-12-02 | 2021-12-02 | Oil-cooled motor cooling system |
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| Country | Link |
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| CN (1) | CN216751437U (en) |
Cited By (3)
| 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 |
| CN116111753A (en) * | 2023-04-13 | 2023-05-12 | 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 |
| WO2024179305A1 (en) * | 2023-02-27 | 2024-09-06 | 北京车和家汽车科技有限公司 | Oil-cooled electric motor and vehicle |
-
2021
- 2021-12-02 CN CN202123000157.9U patent/CN216751437U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024179305A1 (en) * | 2023-02-27 | 2024-09-06 | 北京车和家汽车科技有限公司 | Oil-cooled electric motor and vehicle |
| 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 |
| CN116111753A (en) * | 2023-04-13 | 2023-05-12 | 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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