CN112104115A - Improved structure of oil-cooled motor - Google Patents
Improved structure of oil-cooled motor Download PDFInfo
- Publication number
- CN112104115A CN112104115A CN202010890797.2A CN202010890797A CN112104115A CN 112104115 A CN112104115 A CN 112104115A CN 202010890797 A CN202010890797 A CN 202010890797A CN 112104115 A CN112104115 A CN 112104115A
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- China
- Prior art keywords
- stator
- oil
- cooling
- casing
- boss
- 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.)
- Pending
Links
- 238000001816 cooling Methods 0.000 claims abstract description 56
- 238000004804 winding Methods 0.000 claims abstract description 16
- 238000005507 spraying Methods 0.000 claims description 21
- 239000007921 spray Substances 0.000 claims description 10
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention discloses an improved structure of an oil-cooled motor. It includes casing and stator, be equipped with the cooling runner on the stator, the cooling runner is the annular setting on the periphery of stator, the cooling runner along the stator axial, make a round trip to turn back between stator both ends face, the top surface of cooling runner is opened, the cooling runner is equipped with out oil breach at stator both ends face, the casing top is equipped with the inlet port, inlet port and cooling runner intercommunication, the chassis bottom is equipped with the oil outlet, the stator is fixed in the casing, the sealed cooling runner's of casing inside wall top surface. The invention has simple structure and reasonable design, the cooling oil directly contacts with the end part of the winding and the surface of the stator to take away heat, thereby achieving good cooling effect, the diameter of the inner circle of the shell is consistent after the shell is not provided with a cooling flow passage, the manufacture is easy, and the invention can meet the design and manufacture of various types and specifications by changing the length of the stator, thereby improving the generalization degree of the shell, and achieving the purposes of reducing the manufacture difficulty, short production period and low cost.
Description
Technical Field
The invention relates to the technical field of motors, in particular to an improved structure of an oil-cooled motor.
Background
In recent years, in most motor applications, a demand for weight reduction of motors has been made. The motor is required to output a larger torque and a higher power in a smaller volume. The liquid cooling mode is a cooling mode which is relatively simple, high in safety and cooling efficiency and meets higher requirements for heat dissipation of the motor to guarantee safety, reliability, light weight and the like of the motor. Based on the requirements, the liquid cooling motor in the current market adopts a metal casing comprising a cooling flow channel, a motor stator is cooled by water-based cooling liquid in the cooling flow channel, and a cooling medium is not contacted with the stator; and secondly, cooling oil is adopted by the motor to flow through the outer surface of the motor iron core and is sprayed to the winding to carry out contact type heat conduction cooling. However, in the above applications, the motor core and the winding are cooled by the cooling flow channel and the oil spraying device which are arranged on the casing, but since the cooling flow channel and the oil spraying device are arranged on the casing, the difficulty is increased for manufacturing and processing the motor casing, and the motor of each model needs different flow channels, which inevitably affects the generalization of the motor casing, increases the number of the molds and the casing, is not beneficial to the mass production of the motor, reduces the manufacturing efficiency of the motor, increases the difficulty, and further affects the economic benefit.
Disclosure of Invention
The invention aims to provide an improved structure of an oil-cooled motor, which has high universality of a machine shell and is easy to manufacture.
The object of the invention is thus achieved.
The utility model provides an improvement structure of oil-cooling motor, includes casing and stator, be equipped with the cooling runner on the stator, the cooling runner is the annular setting in the periphery of stator, and the cooling runner is along the stator axial, make a round trip to turn back between stator both ends face, and the top surface of cooling runner is opened, and the cooling runner is equipped with out oil breach at stator both ends face, and the casing top is equipped with the inlet port, inlet port and cooling runner intercommunication, and the chassis bottom is equipped with the oil outlet, and the stator is fixed in the casing, the sealed top surface that cools off the runner of casing inside wall.
The technical scheme can be further perfected as follows.
More specifically, the spraying rings are respectively arranged on two end faces of the stator, the spraying rings are provided with annular flow channels, the spraying rings are provided with oil inlet gaps, one ends of the oil inlet gaps are communicated with the oil outlet gaps, the other ends of the oil inlet gaps are communicated with the annular flow channels, a plurality of oil injection holes are formed in the inner circumferential surfaces of the spraying rings and communicated with the annular flow channels, the outer circumferential surfaces of the spraying rings are open, and the inner side wall of the shell seals the outer circumferential surfaces of the spraying rings.
More specifically, the oil injection hole structure further comprises a stator winding, wherein the stator winding is fixed in the stator, and the oil injection hole is obliquely arranged towards the end part of the stator winding.
More specifically scheme, a plurality of the nozzle opening is the annular and arranges, and the equidistance interval sets up between the nozzle opening.
More specifically, the oil inlet notch is located at the bottom of the spray ring.
More specific scheme, be equipped with even number boss in the periphery of stator, the boss sets up along the stator axial, and the equidistance interval sets up between the boss, forms even number recess between the boss, and the length of boss is shorter than stator length, and adjacent boss is close to a tip of stator respectively to make adjacent recess intercommunication, and form at the terminal surface of stator the breach of producing oil constitutes behind the recess intercommunication cooling runner.
The cooling oil enters the cooling flow channel through the oil inlet hole on the casing and flows through the periphery of the stator, and is sprayed out to the end part of the stator winding through the spraying hole on the spraying ring and then discharged through the oil outlet hole on the casing; the cooling oil directly contacts with the end part of the stator winding and the surface of the stator to take away heat, and a good cooling effect is achieved. The diameters of the inner circles of the casing are consistent after the cooling flow channel is not arranged on the casing, so that the casing is easy to manufacture, and the design and manufacture of various types and specifications can be met by changing the length of the stator, thereby improving the generalization degree of the casing, and achieving the purposes of reducing the manufacturing difficulty, shortening the production period and reducing the cost.
Drawings
Fig. 1 is a schematic structural diagram of the first embodiment (omitting the chassis).
Fig. 2 is a schematic structural diagram of a stator and a stator winding in the first embodiment.
Fig. 3 is a schematic structural diagram of a stator according to a first embodiment.
Fig. 4 is a schematic structural view of a spray ring according to a first embodiment.
Fig. 5 is a schematic structural diagram of a chassis according to an embodiment.
Fig. 6 is a schematic cross-sectional structure diagram according to the first embodiment.
Detailed Description
The invention is further described with reference to the following figures and examples:
first embodiment, referring to fig. 1 to 6, an improved structure of an oil-cooled motor includes a casing 1, a stator 2, and a stator winding 3, where the stator winding 3 is fixed in the stator 2 and is subjected to insulation treatment, and the stator 2 is fixed in the casing 1.
Be equipped with even number boss 21 in stator 2's the periphery, boss 21 sets up along 2 axial of stator, equidistance interval sets up between the boss 21, form even number recess 22 between the boss 21, the length of boss 21 is shorter than 2 length of stator, adjacent boss 21 is close to a tip of stator 2 respectively, so that adjacent recess 22 intercommunication, and form out oil breach 23 at the terminal surface of stator 2, constitute cooling runner 20 behind the recess 22 intercommunication, cooling runner 20 is the annular setting promptly, cooling runner 20 is along the stator 2 axial, make a round trip to turn back between 2 terminal surfaces of stator, the formation of turning back of going back an oil breach 23.
The two end faces of the stator 2 are respectively provided with a spraying ring 4, the spraying ring 4 is provided with an annular flow passage 40, the bottom of the spraying ring 4 is provided with an oil inlet notch 41, one end of the oil inlet notch 41 is communicated with the oil outlet notch 23 at the bottom of the stator 2, the other end of the oil inlet notch 41 is communicated with the annular flow passage 40, the inner circumferential surface of the spraying ring 4 is provided with a plurality of oil spray holes 42, the oil spray holes 42 are annularly arranged, the oil spray holes 42 are equidistantly arranged at intervals, the oil spray holes 42 are obliquely arranged towards the end part of the stator winding 3, the oil spray holes 42 are communicated with the annular flow.
The top of the machine shell 1 is provided with an oil inlet hole 11, the bottom of the machine shell 1 is provided with an oil outlet hole 12, and the oil inlet hole 11 is communicated with the cooling flow channel 20.
During assembly, the stator winding 3 is fixed in the stator 2, the spraying ring 4 is fixed on the end faces of the two ends of the stator 2, finally the stator 2 is integrally installed in the casing 1, and the inner side wall of the casing 1 seals the peripheral surface of the spraying ring 4 and the top surface of the cooling flow channel 20. Cooling oil flows into the cooling flow passage 20 from the oil inlet hole 11 of the casing 1, the cooling oil in the cooling flow passage 20 flows downwards in two paths, namely, the cooling oil is coiled and passes through the surface of the stator 2 in the flowing process, meanwhile, the cooling oil in the cooling flow passage 20 flows into the annular flow passage 40 of the spray ring 4 through the oil outlet gap 23 and the oil inlet gap 41, the cooling oil is sprayed out of the end part of the stator winding 3 from the oil spray hole 42, and finally the cooling oil is collected at the bottom of the casing 1 and is discharged from the oil outlet hole 12.
The cooling oil directly contacts with the tip of stator winding 3 and 2 surperficial direct contact of stator, has reduced thermal conduction links, and the motor radiating effect is good, simultaneously, because cooling flow channel 20 no longer sets up on casing 1, the interior circle diameter of casing 1 is unanimous, can adopt multiple modes such as drawing, casting, spinning to make, and it is easy to make, and the length of the different stators 2 of cooperation can satisfy the manufacturing and designing of multiple model specification to improve the purpose of casing 1 universalization degree.
Claims (6)
1. The utility model provides an improvement structure of oil-cooled motor, includes casing and stator, its characterized in that: be equipped with the cooling flow way on the stator, the cooling flow way is the annular setting on the periphery of stator, the cooling flow way along the stator axial, make a round trip to turn back between stator both ends face, the top surface of cooling flow way is opened, the cooling flow way is equipped with out oil breach at stator both ends face, the casing top is equipped with the inlet port, inlet port and cooling flow way intercommunication, the chassis bottom is equipped with the oil outlet, the stator is fixed in the casing, the sealed top surface that cools off the flow way of casing inside wall.
2. The improved structure of the oil-cooled motor according to claim 1, characterized in that: the spraying ring is arranged on two end faces of the stator respectively, an annular flow passage is arranged on the spraying ring, an oil inlet notch is formed in the spraying ring, one end of the oil inlet notch is communicated with the oil outlet notch, the other end of the oil inlet notch is communicated with the annular flow passage, a plurality of oil injection holes are formed in the inner peripheral surface of the spraying ring and communicated with the annular flow passage, the outer peripheral surface of the spraying ring is open, and the inner side wall of the shell seals the outer peripheral surface of the.
3. The improved structure of the oil-cooled motor according to claim 2, characterized in that: the oil injection hole is obliquely arranged towards the end part of the stator winding.
4. The improved structure of the oil-cooled motor according to claim 2, characterized in that: a plurality of the nozzle opening is the annular and arranges, and the equidistance interval sets up between the nozzle opening.
5. The improved structure of the oil-cooled motor according to claim 2, characterized in that: the oil inlet gap is positioned at the bottom of the spray ring.
6. The improved structure of the oil-cooled motor according to claim 1, characterized in that: be equipped with even number boss in the periphery of stator, the boss sets up along the stator axial, and the equidistance interval sets up between the boss, forms even number recess between the boss, and the length of boss is shorter than stator length, and adjacent boss is close to a tip of stator respectively to make adjacent recess intercommunication, and form at the terminal surface of stator the breach of producing oil constitutes behind the recess intercommunication cooling runner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010890797.2A CN112104115A (en) | 2020-08-29 | 2020-08-29 | Improved structure of oil-cooled motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010890797.2A CN112104115A (en) | 2020-08-29 | 2020-08-29 | Improved structure of oil-cooled motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112104115A true CN112104115A (en) | 2020-12-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010890797.2A Pending CN112104115A (en) | 2020-08-29 | 2020-08-29 | Improved structure of oil-cooled motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112104115A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113422473A (en) * | 2021-05-14 | 2021-09-21 | 珠海格力电器股份有限公司 | Outer lane oil spout structure, driving motor and new energy automobile |
| CN113612351A (en) * | 2021-06-29 | 2021-11-05 | 臻驱科技（上海）有限公司 | Cooling structure and method of driving motor, oil-cooled motor and automobile |
| CN114285197A (en) * | 2021-12-30 | 2022-04-05 | 浙江吉利控股集团有限公司 | Stator core, motor, power assembly and car |
| CN114421712A (en) * | 2021-12-22 | 2022-04-29 | 浙江零跑科技股份有限公司 | Oil cooling motor stator end winding oil spout cooling body |
| CN114530989A (en) * | 2022-03-01 | 2022-05-24 | 臻驱科技（上海）有限公司 | Oil-cooled driving motor and assembling method thereof |
| WO2022257507A1 (en) * | 2021-06-09 | 2022-12-15 | 浙江吉利控股集团有限公司 | Stator core, electric motor, power assembly, automobile and vehicle |
| WO2024170362A1 (en) * | 2023-02-13 | 2024-08-22 | Zf Friedrichshafen Ag | Fluid-conducting element for an electric machine, electric machine, and vehicle |
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| CN108336865A (en) * | 2018-03-30 | 2018-07-27 | 北京理工大学 | A kind of liquid cooling driving motor |
| CN109217541A (en) * | 2017-06-30 | 2019-01-15 | 奥迪股份公司 | motor and motor vehicle |
| CN109936241A (en) * | 2019-03-27 | 2019-06-25 | 上海蔚来汽车有限公司 | Motor |
| CN110808645A (en) * | 2019-11-04 | 2020-02-18 | 合肥巨一动力系统有限公司 | Cooling structure applied to oil-cooled flat wire motor stator |
| CN110855083A (en) * | 2019-10-21 | 2020-02-28 | 浙江龙芯电驱动科技有限公司 | Oil circuit structure of oil-cooled motor |
| CN211183563U (en) * | 2019-11-28 | 2020-08-04 | 武汉海王机电工程技术有限公司 | Liquid cooling stator core and motor |
| CN111509876A (en) * | 2020-05-27 | 2020-08-07 | 精进电动科技股份有限公司 | Stator core cooling structure and motor cooling system |
-
2020
- 2020-08-29 CN CN202010890797.2A patent/CN112104115A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109217541A (en) * | 2017-06-30 | 2019-01-15 | 奥迪股份公司 | motor and motor vehicle |
| CN108336865A (en) * | 2018-03-30 | 2018-07-27 | 北京理工大学 | A kind of liquid cooling driving motor |
| CN109936241A (en) * | 2019-03-27 | 2019-06-25 | 上海蔚来汽车有限公司 | Motor |
| CN110855083A (en) * | 2019-10-21 | 2020-02-28 | 浙江龙芯电驱动科技有限公司 | Oil circuit structure of oil-cooled motor |
| CN110808645A (en) * | 2019-11-04 | 2020-02-18 | 合肥巨一动力系统有限公司 | Cooling structure applied to oil-cooled flat wire motor stator |
| CN211183563U (en) * | 2019-11-28 | 2020-08-04 | 武汉海王机电工程技术有限公司 | Liquid cooling stator core and motor |
| CN111509876A (en) * | 2020-05-27 | 2020-08-07 | 精进电动科技股份有限公司 | Stator core cooling structure and motor cooling system |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113422473A (en) * | 2021-05-14 | 2021-09-21 | 珠海格力电器股份有限公司 | Outer lane oil spout structure, driving motor and new energy automobile |
| WO2022257507A1 (en) * | 2021-06-09 | 2022-12-15 | 浙江吉利控股集团有限公司 | Stator core, electric motor, power assembly, automobile and vehicle |
| CN113612351A (en) * | 2021-06-29 | 2021-11-05 | 臻驱科技（上海）有限公司 | Cooling structure and method of driving motor, oil-cooled motor and automobile |
| CN114421712A (en) * | 2021-12-22 | 2022-04-29 | 浙江零跑科技股份有限公司 | Oil cooling motor stator end winding oil spout cooling body |
| CN114421712B (en) * | 2021-12-22 | 2023-08-01 | 浙江零跑科技股份有限公司 | Oil-cooled motor stator end winding oil spray cooling mechanism |
| CN114285197A (en) * | 2021-12-30 | 2022-04-05 | 浙江吉利控股集团有限公司 | Stator core, motor, power assembly and car |
| CN114530989A (en) * | 2022-03-01 | 2022-05-24 | 臻驱科技（上海）有限公司 | Oil-cooled driving motor and assembling method thereof |
| WO2024170362A1 (en) * | 2023-02-13 | 2024-08-22 | Zf Friedrichshafen Ag | Fluid-conducting element for an electric machine, electric machine, and vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201218 |
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| RJ01 | Rejection of invention patent application after publication |