CN114616748B - Rotor structure for improving cooling function of driving motor - Google Patents
Rotor structure for improving cooling function of driving motor Download PDFInfo
- Publication number
- CN114616748B CN114616748B CN202080074024.5A CN202080074024A CN114616748B CN 114616748 B CN114616748 B CN 114616748B CN 202080074024 A CN202080074024 A CN 202080074024A CN 114616748 B CN114616748 B CN 114616748B
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- rotating shaft
- space part
- cooling
- rotor
- space
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- 238000001816 cooling Methods 0.000 title claims abstract description 53
- 239000012809 cooling fluid Substances 0.000 claims abstract description 26
- 239000007769 metal material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 15
- 230000001360 synchronised effect Effects 0.000 description 11
- 230000000903 blocking effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910052779 Neodymium Inorganic materials 0.000 description 2
- 230000001747 exhibiting effect Effects 0.000 description 2
- 229910052692 Dysprosium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- KBQHZAAAGSGFKK-UHFFFAOYSA-N dysprosium atom Chemical compound [Dy] KBQHZAAAGSGFKK-UHFFFAOYSA-N 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/32—Rotating 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
- 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
- H02K9/197—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator
-
- 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
-
- 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
- H02K1/22—Rotating parts of the magnetic circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/003—Couplings; Details of shafts
-
- 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
- H02K9/193—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with provision for replenishing the cooling medium; with means for preventing leakage of the cooling medium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
- B60K2001/006—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric motors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/90—Vehicles comprising electric prime movers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2205/00—Specific aspects not provided for in the other groups of this subclass relating to casings, enclosures, supports
- H02K2205/09—Machines characterised by drain passages or by venting, breathing or pressure compensating means
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention discloses a rotor structure for improving the cooling function of a driving motor, which comprises a rotating shaft, wherein one end of the rotating shaft is closed along the length direction, the other end of the rotating shaft is open and hollow, the inner space of the rotating shaft is provided with a first space part with a relatively larger diameter and a second space part with a relatively smaller diameter, the first space part is connected with the closed end, and the second space part is connected with the open end; the rotor core is arranged outside the first space part of the rotating shaft, and the cooling fluid supply pipe is introduced into the inner space of the rotating shaft through the opening end of the rotating shaft, and the introducing front end of the cooling fluid supply pipe exceeds the middle position of the first space part. The rotor core is arranged in the relatively large outer diameter and inner diameter intervals, so that the regional cooling oil way which plays a large cooling effect is expanded more, the regional cooling oil way which plays a relatively small cooling effect is further reduced, the integral cooling function and efficiency of the rotor are improved, and meanwhile, the supply and discharge of cooling fluid in the rotating shaft are smooth, and no stagnation and blockage are caused.
Description
Technical Field
The invention divides the rotating shaft of the driving motor rotor into two different outer diameter and inner diameter sections according to the length direction, and installs the rotor core in the section with relatively larger outer diameter and inner diameter. The cooling oil way in the region with larger cooling effect can be further enlarged, and the cooling oil way in the region with smaller cooling effect can be further reduced, so that the overall cooling function and efficiency of the rotor are improved, and meanwhile, the supply and discharge of the cooling fluid in the rotating shaft can be smoothly and non-blocking carried out, and in particular, the rotor structure with the cooling function of the driving motor is related.
Background
An electric automobile, which is generally called an eco-friendly automobile, generates a driving force by a driving motor that obtains a rotational force by electric energy.
As described above, a permanent magnet synchronous motor (Permanent Magnet Synchronous Motor:pmsm) is widely used as a driving motor for an environmental protection vehicle such as an electric vehicle or a hybrid vehicle.
In order to maximize performance under limited layout conditions, a permanent magnet synchronous motor is required to maximize performance of a permanent magnet in which a neodymium (Nd) component improves strength of the permanent magnet and a dysprosium (Dy) component improves resistance to high temperature Demagnetization (de-magnetization).
However, rare earth (Nd, dy) metal elements of these permanent magnets are limited in the storage in some countries such as china, and are very expensive and have a large price variation.
For this reason, a wound rotor synchronous motor (Wound Rotor Synchronous Motor: WRSM) that can replace a Permanent Magnet Synchronous Motor (PMSM) is recently being developed as a power source for an eco-friendly car. The wound rotor synchronous motor winds a coil not only around a stator but also around a rotor, and electromagnetically converts the rotor when a current is applied, thereby replacing permanent magnets of a Permanent Magnet Synchronous Motor (PMSM).
In the wound rotor synchronous motor, a certain gap is arranged in a stator by a rotor, when the coils of the stator and the rotor are electrified, a magnetic system is formed, and the rotor rotates under the magnetic action generated between the coils.
On the other hand, in the process of rotating the driving motor such as the permanent magnet synchronous motor and the wound rotor synchronous motor at high speed, high-temperature heat is generated around the rotor and the coil.
Also, since the driving motor may be deteriorated in efficiency and damage of internal parts due to heat generated from the rotor and the coil part due to power loss, various forms of cooling techniques are being studied and proposed in order to prevent such occurrence.
As shown in fig. 1, fig. 1 is a schematic diagram of a rotor structure of a conventional driving motor. The rotary shaft 11 of the rotor 10 has a closed hollow structure at one end in the longitudinal direction, and a supply pipe 12 for cooling fluid is provided inside the rotary shaft 11, which is a means for providing a cooling function to the rotor 10. Unexplained symbol 13 is schematically indicated as a rotor core.
However, in the above-described conventional method, since the rotary shaft 11 of the rotor 10 has the straight pipe structure having the same outer diameter and inner diameter extending, the cooling effect of the cooling fluid in the rotary shaft 11 plays the same role for the entire rotary shaft 11, and there is an aspect of low efficiency, which may cause a decrease in the cooling efficiency of the rotor 10.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide a rotor structure for improving the cooling function of a driving motor, a rotor rotating shaft of the driving motor is divided into two different outer diameter and inner diameter sections according to the length direction of the rotor rotating shaft, and a rotor core is arranged in a relatively larger outer diameter section and an inner diameter section. In the region with larger cooling effect, the cooling oil way can be further enlarged, and the cooling oil way in the region with relatively smaller cooling effect is further reduced, so that the overall cooling capacity and efficiency of the rotor are improved, and meanwhile, the supply and discharge of the cooling fluid in the rotating shaft can be smoothly performed without blocking.
In order to achieve the above object, the present invention is realized by the following technical scheme:
the embodiment of the invention provides a rotor structure for improving the cooling function of a driving motor, which comprises a rotating shaft, wherein one end of the rotating shaft is closed along the length direction, the other end of the rotating shaft is open and hollow, the inner space of the rotating shaft is provided with a first space part with a relatively larger diameter and a second space part with a relatively smaller diameter, the first space part is connected with the closed end, and the second space part is connected with the open end; the rotor core is arranged outside the first space part of the rotating shaft, and the cooling fluid supply pipe is introduced into the inner space of the rotating shaft through the opening end of the rotating shaft, and the introducing front end of the cooling fluid supply pipe exceeds the middle position of the first space part.
As a further implementation, there is a difference between an outer diameter of one side formed by the first space portion and an outer diameter of the other side formed by the second space portion of the rotating shaft.
As a further implementation manner, the connecting portion of the first space portion and the second space portion has a tapered surface with a gradually reduced diameter and extending based on the diameter of the first space portion.
As a further implementation manner, the rotating shaft comprises a first unit shaft with one end in the length direction being closed and the other end being open, and a first space part formed on the inner side, and a second space part with two ends in the length direction being open; and a second unit shaft structure connected with the first unit shaft in a state that the second space part is connected with the first space part.
As a further implementation, the first unit shaft and the second unit shaft are respectively formed of a metal material and are connected by welding.
As a further implementation manner, the closed end of the rotating shaft forms a round shape with a convex inside to the outside.
The beneficial effects of the invention are as follows:
according to the embodiment of the invention, the length direction of the rotating shaft of the rotor of the driving motor is divided into two different outer diameter and inner diameter sections, and the rotor core is arranged in the section with the relatively larger outer diameter and inner diameter. The cooling oil way of the region with larger cooling effect is further enlarged, and the cooling oil way of the region with smaller cooling effect is further reduced, so that the overall cooling function and efficiency of the rotor are improved, the supply and discharge of the cooling fluid in the rotating shaft can be smoothly carried out, and no stagnation and blockage phenomenon can occur.
Drawings
Fig. 1 is a schematic diagram of a rotor structure of a conventional driving motor of an electric automobile;
FIG. 2 is a schematic diagram of a structure in accordance with one or more embodiments of the invention.
Wherein, 10, the rotor, 11, the spindle, 12, the supply pipe, 13, rotor core;
100. a rotation shaft 110, a first space part 120, a second space part 130, a tapered surface 140, a first unit shaft 150, a second unit shaft 200, a rotor core 300, and a cooling fluid supply pipe.
Detailed Description
Embodiment one:
the following detailed description of the invention is exemplary of possible implementations of the invention and is presented in terms of the examples of implementations with reference to the accompanying drawings. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It is to be understood that the various embodiments of the invention are different and need not be mutually exclusive. For example, the specific shape, structure, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the present invention. In addition, it is to be understood that the location or arrangement of individual elements within each illustrated embodiment may be modified without departing from the spirit and scope of the invention.
The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is defined only by the appended claims, along with the full range of equivalents to which such claims are entitled. Like reference symbols in the various drawings indicate the same or similar functionality.
The terms used in the present invention have been selected as widely used as possible in view of functions in the present invention, but may be different depending on intention or judgment of those skilled in the art, appearance of new technology, and the like. In addition, in some cases, there are also terms arbitrarily selected by the applicant, and in this case, the meanings thereof will be explained in detail in the description section of the corresponding invention. Accordingly, the terms used in the present invention are not simple term names, but are defined based on the meaning of the terms and the overall content of the present invention.
In the present invention, when some of the components are "included" in the whole, this means that other components may be included without excluding other components unless specifically stated to the contrary. The terms "part", module "and the like in the specification refer to at least one function or unit for processing one action, and may be implemented by hardware or software, or may be implemented by a combination of hardware and software.
The present embodiment provides a rotor structure for improving a cooling function of a driving motor, as shown in fig. 2, including a rotary shaft 100 and a rotor core 200.
The shaft 100 is hollow with one end closed and the other end open, based on the length direction thereof, and the inner space of the shaft 100 has a relatively large diameter, and has a connection form of a first space portion 110 adjacent to the closed end of the shaft 100 and a second space portion 120 having a relatively small diameter and being connected to the open other end of the shaft 100.
The rotor core 200 is coupled with the first space portion 110 of the rotation shaft 100 and the corresponding outside.
Then, the cooling fluid supply pipe 300 is introduced into the inner space of the rotating shaft 100 through the open other end of the rotating shaft 100, and such a front end of the cooling fluid supply pipe 300 in the introduction direction of the rotating shaft 100 exceeds the middle position of the first space portion 110. The shaft 100 may be rounded with a closed end having an inner surface that is convex outwardly.
According to the above-described configuration, as the first space portion 110, in which a part of the cooling oil passage is formed in the rotating shaft 100, is formed to have a larger diameter, more cooling water can be supplied to the cooling oil passage in the rotating shaft 100, thereby greatly improving the cooling function and efficiency of the rotor. In addition, by combining the rotor core 200 with the outer diameter of the first space portion 110 forming the rotation shaft 100, the cooling function and efficiency of the rotor can be further improved.
In addition, according to the rounded shape formed by the protrusion of the inner surface of the closed end of the rotating shaft 100, one side end of the first space portion 110 forming a part of the cooling oil path in the rotating shaft is rounded, and thus, the cooling fluid discharged into the first space portion 110 through the cooling fluid supply pipe 300 is discharged while striking the closed end of the first space portion 110, maximally preventing the phenomenon of stagnation by clogging, naturally flowing along the rounded surface of the first space portion 110 and being redirected.
That is, the supply and discharge of the cooling fluid in the first space portion 110 becomes smooth, which allows the newly supplied cooling fluid to be rapidly discharged after the cooling effect while successively generating the effect of the new cooling fluid, thereby greatly improving the cooling function and efficiency of the rotor.
In addition, the rotation shaft 100 may be formed based on a difference between an inner diameter of the first space portion 110 and an inner diameter of the second space portion 120 between an outer diameter of one side where the first space portion 110 is formed and an outer diameter of the other side where the second space portion 120 is formed. That is, the outer diameter of one side of the rotation shaft 100 forming the first space portion 110 is larger than the outer diameter of the other side forming the second space portion 120.
According to the present embodiment, the rotary shaft 100 has a coupled state of the first unit shaft 140 and the second unit shaft 150, and the first unit shaft 140 is formed in such a manner that one end in the longitudinal direction is closed and the other end in the longitudinal direction is opened, and the first space portion 110 is formed inside. The second unit shaft 150 is open at both ends in the longitudinal direction, and a second space portion 120 is formed inside, and the second space portion 120 is coupled to the first unit shaft 140 in a state where it is coupled to the first space portion 110.
Also, in the present embodiment, the first unit shaft 140 and the second unit shaft 150 are respectively formed of a metal material and are coupled to each other by welding, but the present description is not limited thereto.
According to the above-described structure, since the second space portion 120 forming a part of the cooling oil passage in the rotating shaft 100 has a smaller diameter, the overall outer diameter of the rotating shaft 100 is reduced, so that the cooling function of the rotor is further improved.
The shaft 100 may be in the form of an elongated tapered surface 130 in which the inner diameter of the connecting portion between the first space portion 110 and the second space portion 120 is gradually reduced with reference to the inner diameter of the first space portion 110.
With the above structure, the cooling fluid having a cooling effect in the first space portion of the rotating shaft can smoothly flow into the second space portion having a smaller diameter than the first space portion along the guide of the tapered surface when being discharged in the direction of the second space portion. It is added that after the first space portion has a cooling effect, the cooling fluid moving toward the second space portion smoothly flows into the second space portion while avoiding the occurrence of the blocking stagnation phenomenon to the maximum extent due to the diameter difference between the first space portion and the second space portion. And, this can make the supply and discharge of the cooling fluid in the pivot smooth and easy, no jam and stagnation, thus improve the cooling function and efficiency of the rotor greatly.
As is apparent from the above examples, according to the present invention, a rotor structure for improving a cooling function of a driving motor is divided into two different outer and inner diameter sections based on a length direction of a rotor shaft of the driving motor, and a rotor core is mounted in a section of a relatively large diameter and inner diameter. Therefore, the cooling oil passage in the region exhibiting the large cooling effect is further enlarged, and the oil passage in the region exhibiting the small cooling effect is further reduced, thereby improving the overall cooling function and efficiency of the rotor.
Therefore, the cooling fluid in the rotating shaft can be smoothly supplied and discharged, and no stagnation or blockage phenomenon occurs.
While specific matters and limited examples of embodiments and drawings similar to those of specific components have been described in the above description, the present invention is not limited to the examples of embodiments described above, and various modifications and changes are possible to those skilled in the art, so that the present invention is more fully understood.
Claims (3)
1. The rotor structure for improving the cooling function of the driving motor is characterized by comprising a rotating shaft, wherein one end of the rotating shaft is closed along the length direction, the other end of the rotating shaft is open and hollow, the inner space of the rotating shaft is provided with a first space part with a relatively larger diameter and a second space part with a relatively smaller diameter, the first space part is connected with the closed end, and the second space part is connected with the open end; wherein,
the outer diameter of one side formed by the first space part of the rotating shaft is different from the outer diameter of the other side formed by the second space part;
the connecting part of the first space part and the second space part takes the diameter of the first space part as a reference, and is provided with a conical surface with a gradually reduced diameter and an extended shape; the method comprises the steps of,
the rotating shaft comprises a first unit shaft with one end in the length direction being closed and the other end being open, and a first space part formed on the inner side of the first unit shaft, and a second space part with two ends in the length direction being open; the second unit shaft is connected with the first unit shaft in a state that the second space part is connected with the first space part;
when the cooling fluid playing a role in cooling in the first space part of the rotating shaft is discharged to the second space part, the cooling fluid can smoothly flow into the second space part with a diameter smaller than that of the first space part along the guiding of the conical surface, so that the cooling function and efficiency of the rotor are improved;
the rotor core is arranged outside the first space part of the rotating shaft; and a cooling fluid supply pipe introduced into the rotating shaft inner space through the open end of the rotating shaft, the introduction front end of the cooling fluid supply pipe exceeding the intermediate position of the first space portion.
2. The rotor structure for improving a cooling function of a driving motor according to claim 1, wherein the first unit shaft and the second unit shaft are respectively formed of a metal material, and are connected by welding.
3. A rotor structure for improving a cooling function of a driving motor according to claim 1, wherein the closed end of the rotating shaft is formed in a circular shape protruding from the inside to the outside.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020190140795A KR102275325B1 (en) | 2019-11-06 | 2019-11-06 | Rotor structure for improving cooling function of driven motor |
| KR10-2019-0140795 | 2019-11-06 | ||
| PCT/KR2020/014860 WO2021091157A1 (en) | 2019-11-06 | 2020-10-29 | Rotor structure for improving cooling function of drive motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114616748A CN114616748A (en) | 2022-06-10 |
| CN114616748B true CN114616748B (en) | 2024-04-05 |
Family
ID=75848396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202080074024.5A Active CN114616748B (en) | 2019-11-06 | 2020-10-29 | Rotor structure for improving cooling function of driving motor |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR102275325B1 (en) |
| CN (1) | CN114616748B (en) |
| WO (1) | WO2021091157A1 (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003235210A (en) * | 2002-02-06 | 2003-08-22 | Nissan Motor Co Ltd | Cooling structure of rotating body |
| JP2012524514A (en) * | 2009-04-20 | 2012-10-11 | ゼネラル・エレクトリック・カンパニイ | Integrated brushless starter / generator system |
| JP2015091198A (en) * | 2013-11-06 | 2015-05-11 | 日産自動車株式会社 | Rotor shaft core cooling structure |
| CN206268235U (en) * | 2016-12-20 | 2017-06-20 | 北京新能源汽车股份有限公司 | Motor rotating shaft structure, motor and automobile |
| CN207021794U (en) * | 2016-09-02 | 2018-02-16 | 现代摩比斯株式会社 | Motor rotor with cooling end |
| DE102017221552A1 (en) * | 2017-10-13 | 2019-04-18 | Hyundai Motor Company | GRINDING ROLLER MOTOR FOR A VEHICLE |
| KR20190061189A (en) * | 2017-11-27 | 2019-06-05 | 현대자동차주식회사 | Rotor of wrsm motor |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7489057B2 (en) | 2007-05-01 | 2009-02-10 | Tesla Motors, Inc. | Liquid cooled rotor assembly |
| KR100907937B1 (en) | 2007-06-29 | 2009-07-16 | 한국산업기술대학교산학협력단 | Electric motor cooling device |
| KR20140004313A (en) | 2012-07-02 | 2014-01-13 | 현대모비스 주식회사 | Cooling structure for motor rotator |
| DE102015223631B4 (en) * | 2015-11-30 | 2017-06-08 | Thyssenkrupp Ag | Built rotor hollow shaft with Kühlmediumverteilelement |
| EP3465886B1 (en) * | 2016-06-07 | 2022-08-03 | Tesla, Inc. | Electric motor cooling system |
-
2019
- 2019-11-06 KR KR1020190140795A patent/KR102275325B1/en active IP Right Grant
-
2020
- 2020-10-29 CN CN202080074024.5A patent/CN114616748B/en active Active
- 2020-10-29 WO PCT/KR2020/014860 patent/WO2021091157A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003235210A (en) * | 2002-02-06 | 2003-08-22 | Nissan Motor Co Ltd | Cooling structure of rotating body |
| JP2012524514A (en) * | 2009-04-20 | 2012-10-11 | ゼネラル・エレクトリック・カンパニイ | Integrated brushless starter / generator system |
| JP2015091198A (en) * | 2013-11-06 | 2015-05-11 | 日産自動車株式会社 | Rotor shaft core cooling structure |
| CN207021794U (en) * | 2016-09-02 | 2018-02-16 | 现代摩比斯株式会社 | Motor rotor with cooling end |
| CN206268235U (en) * | 2016-12-20 | 2017-06-20 | 北京新能源汽车股份有限公司 | Motor rotating shaft structure, motor and automobile |
| DE102017221552A1 (en) * | 2017-10-13 | 2019-04-18 | Hyundai Motor Company | GRINDING ROLLER MOTOR FOR A VEHICLE |
| CN109672300A (en) * | 2017-10-13 | 2019-04-23 | 现代自动车株式会社 | Wound-rotor motor for vehicle |
| KR20190061189A (en) * | 2017-11-27 | 2019-06-05 | 현대자동차주식회사 | Rotor of wrsm motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114616748A (en) | 2022-06-10 |
| KR20210054755A (en) | 2021-05-14 |
| KR102275325B1 (en) | 2021-07-09 |
| WO2021091157A1 (en) | 2021-05-14 |
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