CN113381533A - Motor cooling structure and motor with same - Google Patents
Motor cooling structure and motor with same Download PDFInfo
- Publication number
- CN113381533A CN113381533A CN202110697700.0A CN202110697700A CN113381533A CN 113381533 A CN113381533 A CN 113381533A CN 202110697700 A CN202110697700 A CN 202110697700A CN 113381533 A CN113381533 A CN 113381533A
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- stator
- oil guide
- guide hole
- oil
- rotor
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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
- 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)
- Iron Core Of Rotating Electric Machines (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention provides a motor cooling structure and a motor with the same, wherein the motor comprises a cylindrical stator and a rotor arranged in the center of the stator, an air gap is formed between the stator and the rotor, and the rotor rotates by taking a central shaft as a rotating shaft; the stator is formed by overlapping a plurality of stator punching sheets, and the excircle of each stator punching sheet is provided with at least one notch; when adjacent stator punching sheets are mutually overlapped, part or all of a plurality of adjacent gaps are mapped and overlapped, so that at least one oil guide groove is formed on the outer surface of the stator by the gaps; the oil guide groove is communicated with an external oil pipe; the stator punching sheet is also provided with a radial oil guide hole, one end of the oil guide hole is communicated with the air gap, and the other end of the oil guide hole is communicated with the oil guide groove; the cooling oil in the external oil pipe flows through the oil guide groove to flow through the stator, flows into the air gap through the oil guide hole to contact with the surface of the rotor, and is circumferentially distributed on the surface of the rotor along with the rotation of the rotor, and meanwhile, the stator and the rotor are cooled.
Description
Technical Field
The invention relates to the technical field of motor manufacturing, in particular to a motor cooling structure and a motor with the same.
Background
The motor is an electromagnetic device for realizing electric energy conversion or transmission according to an electromagnetic induction law, and is mainly determined by a left-hand rule according to the direction of stress of a conductor. The pair of electromagnetic forces creates a moment on the armature, which in a rotating electrical machine is referred to as an electromagnetic torque, which is directed in a counter-clockwise direction in an attempt to rotate the armature in a counter-clockwise direction. If the electromagnetic torque is able to overcome the resistive torque on the armature (e.g., friction-induced resistive torque and other loading torques), the armature can rotate in a counterclockwise direction.
At present, the motor is at the actual motion in-process, when being in the big moment of torsion of low-speed, the stator and the rotor of motor can send a large amount of heats, the radiating mode of motor is mostly seting up the spiral water runner in motor machine casing inside, flow through the circulation of water in the machine casing, and then realize the refrigerated effect of motor, there is motor stator winding (coil) in this kind of cooling mode, the rotor can't obtain direct cooling, the main source of generating heat of motor can not obtain effectual cooling, consequently, motor heat load is limited, and then it is limited to lead to the motor volume.
In order to improve the cooling efficiency of the motor in the prior art, a cooling mode of oil cooling type cooling has appeared, because the cooling oil has no conductivity, the cooling oil can be directly contacted with each heating source of the motor, each heating source of the motor is effectively cooled, under the same performance requirement, the oil cooling motor is compared with the traditional water cooling motor, the heat load is improved, the motor volume can be reduced, the power density is further improved, the cooling oil can simultaneously lubricate and cool the motor bearing, the service life of the motor is further prolonged, but the oil circuit structure is complex, the processing technology is complex, the oil circuit structure adopts the processing technologies of screw fastening, welding and the like, the structure of each part is complex, and the processing cost is high.
Disclosure of Invention
In order to overcome the technical defects, the invention aims to provide a motor cooling structure capable of cooling a stator and a rotor simultaneously and a motor provided with the motor cooling structure.
The invention discloses a motor cooling structure, wherein a motor comprises a cylindrical stator and a rotor arranged in the center of the stator, an air gap is formed between the stator and the rotor, and the rotor rotates by taking a central shaft as a rotating shaft; the stator is formed by overlapping a plurality of stator punching sheets, and the excircle of each stator punching sheet is provided with at least one notch; when adjacent stator punching sheets are mutually overlapped, part or all of a plurality of adjacent notches are mapped and overlapped, so that at least one oil guide groove is formed on the outer surface of the stator by the notches; the oil guide groove is communicated with an external oil pipe; the stator punching sheet is also provided with a radial oil guide hole, one end of the oil guide hole is communicated with the air gap, and the other end of the oil guide hole is communicated with the oil guide groove; the cooling oil in the external oil pipe flows through the oil guide groove to flow through the stator, flows into the air gap through the oil guide hole, contacts with the surface of the rotor, and is circumferentially distributed on the surface of the rotor along with the rotation of the rotor.
Preferably, the stator punching sheet comprises stator core units, and a plurality of stator core units are overlapped to form a stator core of the stator; the stator core unit is characterized in that a plurality of teeth are circumferentially arranged on the inner surface of the stator core unit, and the oil guide hole is formed between the two teeth.
Preferably, an opening extending along the radial direction of the stator punching sheet is further formed in the outer circle of part of the stator punching sheet; one end of the opening is connected with a notch, when the stator punching sheets are mutually overlapped, the stator punching sheet with the opening and the stator punching sheet without the opening are alternatively overlapped, and the positions of the adjacent openings are mutually mapped or mutually aligned.
The invention also discloses a forming method of the motor cooling structure, which is applied to the motor cooling structure and comprises the following steps: superposing a plurality of stator punching sheets to form the stator, and radially punching holes on the oil guide groove of the stator to form the oil guide holes; or one of the plurality of notches of the stator punching sheet is radially punched to form the oil guide hole, and the stator punching sheets are overlapped to form the oil guide hole on the stator.
Preferably, the stator is formed by overlapping a plurality of stator punching sheets, and the oil guide groove of the stator is radially perforated to form the oil guide hole, and the method includes: the stator is characterized in that a plurality of oil guide holes are formed in the oil guide groove in a radial punching mode, and the oil guide holes are arranged at equal intervals.
Preferably, the outer surface of the stator is provided with at least two axial oil guide grooves; the oil guide holes in the adjacent oil guide grooves are arranged in a staggered mode.
Preferably, the punching the oil guide hole radially on the oil guide groove of the stator includes: the diameter of the oil guide hole is larger than the thickness of the stator punching sheet.
Preferably, the outer surface of the stator is provided with at least two axial oil guide grooves; the stator is in radially punch on the breach of stator punching the formation lead the oilhole, will stator punching stack makes form on the stator lead the oilhole and include: when the stator punching sheets are overlapped, the oil guide holes in the adjacent oil guide grooves are overlapped in a staggered mode.
Preferably, radially punching a hole on the notch of the stator punching sheet to form the oil guide hole, and superposing the stator punching sheet to form the oil guide hole on the stator, the oil guide hole comprises: at least one stator punching sheet which is not provided with the oil guide hole is superposed between the two stator punching sheets which are provided with the oil guide hole.
The invention also discloses a motor, which comprises the motor cooling structure formed by the forming method.
After the technical scheme is adopted, compared with the prior art, the method has the following beneficial effects:
1. the axial oil guide groove is arranged on the surface of the stator to realize oil cooling of the stator, and the heating oil guide hole communicated with the oil guide groove is arranged to introduce oil into an air gap between the stator and the rotor to realize oil cooling of the rotor, so that the stator and the rotor are cooled simultaneously;
2. the stator is formed by overlapping the stator punching sheets, and the invention provides two embodiments of the oil guide hole formed on the stator, wherein the oil guide hole is formed after the stator punching sheets are overlapped, the opening is formed on the stator punching sheets, and the opening is overlapped to form the oil guide hole along with the overlapping of the stator punching sheets.
Drawings
Fig. 1 is a perspective view of a cooling structure of a motor provided by the present invention;
FIG. 2 is an axial view of the motor cooling structure provided by the present invention;
FIG. 3 is a radial view of the motor cooling structure provided by the present invention;
fig. 4 is a cross-sectional view of section a of an axial view of the motor cooling structure provided by the present invention;
fig. 5 is a schematic structural diagram of a stator punching sheet of a first embodiment of a motor cooling structure provided by the invention;
fig. 6 is a schematic structural diagram of a stator punching sheet of a second embodiment of the motor cooling structure provided by the invention.
Wherein: 1-stator, 101-stator punching sheet, 2-rotor, 3-shell, 4-oil guiding groove, 5-oil guiding hole and 6-tooth.
Detailed Description
The advantages of the invention are further illustrated in the following description of specific embodiments in conjunction with the accompanying drawings.
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection via an intermediate medium, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in themselves. Thus, "module" and "component" may be used in a mixture.
Referring to the attached drawings 1-4, the invention discloses a motor cooling structure, wherein a motor comprises a cylindrical stator 1 and a rotor 2 arranged in the center of the stator 1, an air gap exists between the stator 1 and the rotor 2, the rotor 2 rotates by taking a central shaft as a rotating shaft, and the rotor 2 cuts magnetic induction lines of the stator 1 to generate electromotive force so as to generate electric energy during rotation. The motor further comprises a shell 3, the shell 3 is arranged on the outer surface of the stator 1 in a coating mode, and the inner surface of the shell 3 and the outer surface of the stator 1 are arranged in a gapless mode and used for protecting the stator 1 and the rotor 2.
In the process, the stator 1 and the rotor 2 generate a large amount of heat to influence the power of the stator 1 and the rotor 2, so the invention cools the stator 1 and the rotor 2 through an oil cooling oil path.
Specifically, the stator 1 is formed by overlapping a plurality of stator laminations 101, at least one notch is arranged on the outer circle of each stator lamination 101, when the adjacent stator laminations 101 are overlapped, part or all of the adjacent notches are mapped and overlapped, and at least one oil guide groove 4 is formed on the outer surface of the stator 1 by the notches. The oil guide groove 4 is communicated with an external oil pipe and is used for forming an oil cooling loop of cooling oil.
The stator punching sheet 101 is further provided with a radial oil guide hole 5, one end of the oil guide hole 5 is communicated with the air gap, and the other end of the oil guide hole is communicated with the oil guide groove 4.
The external oil pipe is a first section of an oil path, the oil guide groove 4 is a second section of the oil path, the oil guide hole 5 is a third section of the oil path, and the air gap is a fourth section of the oil path, and the path of the oil cooling oil path is as follows: the cooling oil in the external oil pipe flows through the oil guide groove 4 to the oil guide groove 4, flows into the air gap through the oil guide hole 5, contacts with the surface of the rotor 2, and is circumferentially distributed on the surface of the rotor 2 along with the rotation of the rotor 2, so that the cooling oil can simultaneously cool the stator 1 and the rotor 2 in one oil path.
And this cooling structure need not to establish other cooperation subassemblies again, if adopt the spraying piece of the mode of spraying etc. only need structural processing of current motor go out groove and hole can, simple process, the effect is showing.
Preferably, the stator punching sheet 101 includes a stator core unit, the stator core unit is stacked to form a stator core of the stator 1, a plurality of teeth 6 are circumferentially arranged on an inner surface of the stator core unit, a groove for filling a stator winding is formed between the teeth 6 and the teeth 6, and the oil guiding hole 5 is formed between the two teeth 6, so that a magnetic action of the rotor 2 of the stator 1 is not changed.
Preferably, the outer circle of a part of the stator laminations 101 is further provided with an opening extending along the radial direction of the stator laminations 101, one end of the opening is connected with a notch, when the stator laminations 101 are mutually overlapped, the stator laminations 101 with the opening and the stator laminations 101 without the opening are alternatively overlapped, the positions of adjacent openings are mutually mapped or mutually aligned, and the overlapped openings form the oil guide hole 5 on the stator 1.
Therefore, various combination modes of the openings on the stator punching sheet 101 can be realized: sequentially staggered in the circumferential direction to form spiral oil guide holes 5 on the stator 1; sequentially staggered in the circumferential direction to form a folded oil guide hole 5 on the stator 1; the openings of the adjacent stator punching sheets 101 are staggered in the circumferential direction and are at the same position, so that an oil guide hole 5 with a size larger than the opening is formed, and the like.
Different structures and positions of the oil guide hole 5 can be realized through different combination modes of the stator punching sheets 101, and then different structures of an oil way are realized, so that the whole cooling structure of the motor is flexible and variable, and the motor has wide adaptability and strong adjustability.
Preferably, the oil guide groove 4 axially penetrates through the stator 1, two ends of the oil guide groove 4 are connected with the external oil pipe, and the cooling oil which does not successfully flow into the oil guide hole 5 can also flow back from the other end of the oil guide groove 4, so that an oil way dead angle is avoided.
The invention also discloses a forming method of the motor cooling structure, which is applied to the motor cooling structure and comprises two embodiments of punching the stator 1 to form the oil guide hole 5 and forming the oil guide hole 5 on the stator punching sheet 101 by overlapping the oil guide hole 5 and the oil guide hole 5 on the stator 1.
In the first embodiment, a plurality of stator punching sheets 101 are stacked to form a stator 1, and oil guide holes 5 are radially punched in oil guide grooves 4 of the stator 1. Referring to fig. 5, the stator laminations 101 are uniform in structure, and the position and the structure of the oil guide hole 5 in the stator 1 cannot be changed by overlapping the stator laminations 101. Compared with the stator punching sheet 101 provided with the opening of the second embodiment, the stator punching sheet 101 provided with the notch only in the embodiment has better strength and stronger adaptability.
In this embodiment, preferably, the oil guiding grooves 4 of the stator 1 are radially perforated to form a plurality of equidistant oil guiding holes 5, so that the oil surface introduced to the surface of the rotor 2 is uniformly distributed, the cooling effect on the surface of the rotor 2 is uniformly distributed, and the cooling effect inside the stator 1 is also uniform.
Of course, in order to be suitable for different application scenarios, the plurality of oil guiding holes 5 may also be non-uniformly arranged, and a certain section of the stator 1 or the rotor 2 may be specifically cooled, which is not limited by the present invention.
The preferred, the surface of stator 1 is equipped with two at least axial lead oil groove 4 for the oil feed route is more, and the cooling effect is better.
Further, the oil guiding holes 5 in the adjacent oil guiding grooves 4 are arranged in a staggered mode, so that the quantity of oil surfaces entering the surface of the rotor 2 is more, and better cooling effects can be achieved on the surfaces of the stator 1 and the rotor 2.
Preferably, when the oil guide hole 5 is formed by radially punching the oil guide groove 4 of the stator 1, the diameter of the oil guide hole 5 is larger than the thickness of the stator punching sheet 101, so as to realize the feeding of a larger amount of cooling oil.
For the second embodiment, referring to fig. 6, an oil guiding hole 5 is radially punched on one of the notches of the stator punching sheet 101, and the stator punching sheets 101 are stacked to form the oil guiding hole 5 on the stator 1.
It should be noted that the opening on the stator punching sheet 101 can be understood as the oil guiding hole 5 on the stator 1, and due to the combination mode of different stator punching sheets 101, the oil guiding hole 5 on the stator 1 may be a single opening or may be formed by overlapping a plurality of openings.
The preferred, stator 1's surface is equipped with two at least axial lead oil groove 4 for the oil feed route is more, and the cooling effect is better, and different lead oil groove 4 can realize many compound mode.
Stator punching 101 adds the time, and the crisscross stack of leading oilhole 5 on the adjacent oil groove 4 of leading to realize the multiple compound mode of open-ended on the stator punching 101, specifically include: sequentially staggered in the circumferential direction to form spiral oil guide holes 5 on the stator 1; sequentially staggered in the circumferential direction to form a folded oil guide hole 5 on the stator 1; the openings of the adjacent stator punching sheets 101 are staggered in the circumferential direction and are at the same position, so that an oil guide hole 5 with a size larger than the opening is formed, and the like.
Preferably, besides the continuous oil guiding holes 5, intermittent oil guiding holes 5 can be arranged, that is, at least one stator punching sheet 101 without the oil guiding holes 5 is superposed between two stator punching sheets 101 with the oil guiding holes 5.
The invention also discloses a motor which comprises the motor cooling structure formed by the forming method and is used for carrying out oil cooling on the stator 1 and the rotor 2 in the motor.
It should be noted that the embodiments of the present invention have been described in terms of preferred embodiments, and not by way of limitation, and that those skilled in the art can make modifications and variations of the embodiments described above without departing from the spirit of the invention.
Claims (10)
1. A motor cooling structure is characterized in that the motor comprises a cylindrical stator and a rotor arranged in the center of the stator, an air gap is formed between the stator and the rotor, and the rotor rotates by taking a central shaft as a rotating shaft;
the stator is formed by overlapping a plurality of stator punching sheets, and the excircle of each stator punching sheet is provided with at least one notch;
when adjacent stator punching sheets are mutually overlapped, part or all of a plurality of adjacent notches are mapped and overlapped, so that at least one oil guide groove is formed on the outer surface of the stator by the notches; the oil guide groove is communicated with an external oil pipe;
the stator punching sheet is also provided with a radial oil guide hole, one end of the oil guide hole is communicated with the air gap, and the other end of the oil guide hole is communicated with the oil guide groove;
the cooling oil in the external oil pipe flows through the oil guide groove to flow through the stator, flows into the air gap through the oil guide hole, contacts with the surface of the rotor, and is circumferentially distributed on the surface of the rotor along with the rotation of the rotor.
2. The motor cooling structure according to claim 1, wherein the stator lamination includes stator core units, and a plurality of the stator core units are stacked to form a stator core of the stator; the stator core unit is characterized in that a plurality of teeth are circumferentially arranged on the inner surface of the stator core unit, and the oil guide hole is formed between the two teeth.
3. The motor cooling structure according to claim 1, wherein an opening extending along a radial direction of the stator punching is further formed in an outer circle of part of the stator punching;
one end of the opening is connected with a notch, when the stator punching sheets are mutually overlapped, the stator punching sheet with the opening and the stator punching sheet without the opening are alternatively overlapped, and the positions of the adjacent openings are mutually mapped or mutually aligned.
4. A method for forming a cooling structure of an electric motor, which is applied to the cooling structure of an electric motor according to any one of claims 1 to 3, comprising the steps of:
superposing a plurality of stator punching sheets to form the stator, and radially punching holes on the oil guide groove of the stator to form the oil guide holes;
or one of the plurality of notches of the stator punching sheet is radially punched to form the oil guide hole, and the stator punching sheets are overlapped to form the oil guide hole on the stator.
5. The forming method according to claim 4, wherein the forming of the stator by overlapping a plurality of stator punching sheets, and the radially punching of the oil guide groove of the stator to form the oil guide hole comprises:
the stator is characterized in that a plurality of oil guide holes are formed in the oil guide groove in a radial punching mode, and the oil guide holes are arranged at equal intervals.
6. The molding method according to claim 5, wherein the outer surface of the stator is provided with at least two axial oil guide grooves; the oil guide holes in the adjacent oil guide grooves are arranged in a staggered mode.
7. The molding method according to claim 4, wherein said punching the oil guide hole radially on the oil guide groove of the stator comprises:
the diameter of the oil guide hole is larger than the thickness of the stator punching sheet.
8. The molding method according to claim 4, wherein the outer surface of the stator is provided with at least two axial oil guide grooves;
the stator is in radially punch on the breach of stator punching the formation lead the oilhole, will stator punching stack makes form on the stator lead the oilhole and include:
when the stator punching sheets are overlapped, the oil guide holes in the adjacent oil guide grooves are overlapped in a staggered mode.
9. The forming method according to claim 4, wherein the punching is performed on the notch of the stator punching sheet in the radial direction to form the oil guide hole, and the overlapping of the stator punching sheets to form the oil guide hole on the stator comprises:
at least one stator punching sheet which is not provided with the oil guide hole is superposed between the two stator punching sheets which are provided with the oil guide hole.
10. An electric motor comprising the cooling structure for an electric motor formed by the molding method according to any one of claims 4 to 9.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110613827 | 2021-06-02 | ||
| CN202110613827X | 2021-06-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113381533A true CN113381533A (en) | 2021-09-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110697700.0A Pending CN113381533A (en) | 2021-06-02 | 2021-06-23 | Motor cooling structure and motor with same |
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| CN (1) | CN113381533A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114598051A (en) * | 2022-03-02 | 2022-06-07 | 蔚来动力科技(合肥)有限公司 | Motor for vehicle and vehicle |
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| CN104065185A (en) * | 2014-06-13 | 2014-09-24 | 北京交通大学 | Multi-way soaking type motor |
| US20160006302A1 (en) * | 2014-07-07 | 2016-01-07 | Deere & Company | Arrangement for the stator cooling of an electric motor |
| CN208939688U (en) * | 2018-09-13 | 2019-06-04 | 温岭市钢锋冲件有限公司 | A kind of heat radiating type stator punching |
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2021
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|---|---|---|---|---|
| JP2011167045A (en) * | 2010-02-15 | 2011-08-25 | Nsk Ltd | Motor cooling structure and in-wheel motor |
| CN103155376A (en) * | 2010-10-04 | 2013-06-12 | 瑞美技术有限责任公司 | Coolant channels for electric machine stator |
| WO2012118008A1 (en) * | 2011-03-03 | 2012-09-07 | 日立建機株式会社 | Rotating electric machine equipped with cooling structure, and construction machine equipped with the rotating electric machine |
| CN103296836A (en) * | 2013-06-04 | 2013-09-11 | 北京交通大学 | Circumferential radial multipath oil cooling system for high-speed motor |
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| US20160006302A1 (en) * | 2014-07-07 | 2016-01-07 | Deere & Company | Arrangement for the stator cooling of an electric motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114598051A (en) * | 2022-03-02 | 2022-06-07 | 蔚来动力科技(合肥)有限公司 | Motor for vehicle and vehicle |
| CN114598051B (en) * | 2022-03-02 | 2024-02-27 | 蔚来动力科技(合肥)有限公司 | Motor for vehicle and vehicle |
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