CN111082572B - Motor stator and motor - Google Patents
Motor stator and motor Download PDFInfo
- Publication number
- CN111082572B CN111082572B CN201911235256.XA CN201911235256A CN111082572B CN 111082572 B CN111082572 B CN 111082572B CN 201911235256 A CN201911235256 A CN 201911235256A CN 111082572 B CN111082572 B CN 111082572B
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- cooling
- winding coil
- stator
- heat
- conductor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/24—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors
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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
- H02K1/16—Stator cores with slots for windings
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- 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
- H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
-
- 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
Abstract
The utility model provides a motor stator and motor, relates to motor technical field, this motor stator include stator core and rule in stator core's winding coil, the tip of winding coil is located outside the stator core, be provided with the cooling conductor in the tip of winding coil, be provided with the heat-conducting component on the outer peripheral face of cooling conductor, the heat-conducting component by outside the tip is extended to the tip in the tip of winding coil. The end part of the winding coil is internally provided with the cooling conductor, the cooling conductor is utilized to absorb heat generated by the winding coil, the heat conducting part is arranged on the peripheral surface of the cooling conductor and extends outwards to the outside of the winding coil, and the heat absorbed by the cooling conductor is transferred out of the winding coil by the heat conducting part so as to dissipate heat of the winding coil, so that the problem of the performance reduction of the motor caused by poor heat dissipation effect and serious heat generation of the end winding coil of the motor stator in the running process of the motor is solved, and the reliability of the motor is improved.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a motor stator and a motor.
Background
Because the heat that the winding generates heat can lead to the motor temperature rise too high in the motor operation in-process, and then influences the motor performance, consequently, good heat radiation structure is the important factor of guaranteeing the long-term steady operation of motor.
In the prior art, the air cooling effect is poor, the cooling shell is arranged on the periphery of the stator in the main mode of water cooling and oil cooling, a cooling flow channel is arranged on the cooling shell, and heat generated by the motor is taken away through flowing heat exchange of a heat dissipation medium (water or oil), so that the temperature rise of the motor is reduced. However, the stator heating source is mainly an end winding coil, the efficiency that heat generated by the end winding coil is transferred to the cooling shell only through air or an injection-molded epoxy resin material is low, the end of the winding coil cannot be effectively cooled in the running process of the motor, and the performance of the motor is limited by the heat dissipation structure of the stator.
Disclosure of Invention
One of the purposes of the invention is to provide a motor stator which avoids the defects in the prior art, and can solve the problem of the performance reduction of a motor caused by poor heat dissipation effect and serious heating of an end winding coil of the motor stator in the operation process of the motor.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a motor stator, including stator core and rule in stator core's winding coil, the tip of winding coil is located outside the stator core, be provided with the cooling conductor in the tip of winding coil, be provided with heat-conducting component on the outer peripheral face of cooling conductor, heat-conducting component by the tip of winding coil is inside to the tip extends outside the tip. The end part of the winding coil is internally provided with the cooling conductor, the cooling conductor is utilized to absorb heat generated by the winding coil, meanwhile, the heat conducting part is arranged on the peripheral surface of the cooling conductor, and the heat conducting part outwards extends to the outside of the winding coil, and the heat absorbed by the cooling conductor is transferred out of the winding coil by utilizing the heat conducting part to dissipate heat of the winding coil, so that the problems of poor heat dissipation effect, serious heat generation and reduced motor performance of a motor stator in the running process of the motor are solved, and the reliability of the motor is improved.
Further, the number of the heat conducting components is the same as the number of the slots of the stator core. The number of the heat conducting components is the same as the number of the slots of the stator core, so that the heat conducting components can be guaranteed to have the best heat conducting effect, the internal space of the motor stator is not excessively occupied, and the internal structure of the motor stator is more compact.
Further, the heat conducting member is a heat conducting fan fixed to the outer peripheral surface of the cooling conductor. The heat conducting component is a heat conducting fan blade fixed on the peripheral surface of the cooling conductor, the winding coil is radiated by utilizing the good heat radiating effect of the heat conducting fan blade, and meanwhile, the end part of the winding coil can be wound in the fan blade groove of the corresponding heat conducting fan blade according to the inserting line groove of the stator core where the winding coil is located, so that the inserting line of the winding coil is more compact, and unnecessary space waste is reduced.
Furthermore, both ends of the winding coil are located outside the stator core, and cooling conductors are arranged in both ends of the winding coil. Two ends of the winding coil are located outside the stator core, cooling conductors are arranged in the two ends of the winding coil, heat exchange channels between the winding coil and the outside can be increased, and the heat dissipation effect is improved.
Further, the cooling conductor comprises two semi-annular cooling conductor matrixes which are fixedly spliced. The cooling conductor comprises two semicircular cooling conductor matrixes which are fixedly spliced, when the cooling conductor is installed, the cooling conductor can be split into the two cooling conductor matrixes, then the two cooling conductor matrixes are installed in the winding coil and are fixedly spliced to form the cooling conductor, and the cooling conductor is convenient to install.
Furthermore, the splicing surfaces of the two semi-annular cooling conductor matrixes are respectively provided with a groove and a boss matched with the groove, and the grooves and the bosses are used for splicing the two semi-annular cooling conductor matrixes into the annular cooling conductor. The splicing surfaces of the two semi-annular cooling conductor matrixes are respectively provided with a groove and a boss matched with the groove, the two semi-annular cooling conductor matrixes are spliced into a circular cooling conductor, the bosses matched with the grooves and the grooves are adopted for splicing simultaneously, the splicing perfectness of the two cooling conductor matrixes can be ensured, and the splicing surfaces do not have any other protruding structures.
Furthermore, a cooling shell is sleeved outside the stator core, and the heat conducting component is in contact with the inner side surface of the cooling shell. The stator core overcoat is equipped with cooling shell, and the heat-conducting component contacts with cooling shell's medial surface, gives off the heat that the heat-conducting component derived with cooling shell.
Furthermore, a plurality of cooling channels are formed in the outer side surface of the cooling shell, a water inlet and a water outlet are further formed in the outer side surface of the cooling shell, and the water inlet and the water outlet are respectively communicated with the cooling channel. The lateral surface of the cooling shell is provided with a plurality of cooling flow channels, the lateral surface of the cooling shell is also provided with a water inlet and a water outlet, the water inlet and the water outlet are respectively communicated with the cooling channel, external heat dissipation media are guided into the cooling flow channels by the water inlet to absorb heat led out by the heat conduction component, and the heat dissipation effect is further improved by leading out the heat from the water outlet.
Furthermore, the plurality of cooling channels are uniformly distributed on the outer side surface of the cooling shell along the radial direction of the cooling shell, the water inlet and the water outlet are arranged on the outer side surface of the cooling shell along the axial direction of the cooling shell, and the water inlet and the water outlet are symmetrically arranged on the outer side surface of the cooling shell. The lateral surface at cooling shell is seted up along cooling shell's radial equipartition to a plurality of cooling channels, when having increased cooling channel's quantity, can also evenly take away the inside heat of motor stator, the lateral surface at cooling shell is seted up along cooling shell's axial to water inlet and delivery port, water inlet and delivery port are the symmetry setting on cooling shell's lateral surface, can guarantee that the water inlet equals from both sides to the distance of delivery port, has guaranteed the radiating homogeneity of cooling channel.
The invention has the beneficial effects that: the invention discloses a motor stator, which comprises a stator core and a winding coil embedded in the stator core, wherein the end part of the winding coil is positioned outside the stator core, a cooling conductor is arranged in the end part of the winding coil, a heat conducting component is arranged on the peripheral surface of the cooling conductor, and the heat conducting component extends from the inner part of the end part of the winding coil to the outer part of the end part. The end part of the winding coil is internally provided with the cooling conductor, the cooling conductor is utilized to absorb heat generated by the winding coil, the heat conducting part is arranged on the peripheral surface of the cooling conductor and extends outwards to the outside of the winding coil, and the heat absorbed by the cooling conductor is transferred out of the winding coil by the heat conducting part so as to dissipate heat of the winding coil, so that the problem of the performance reduction of the motor caused by poor heat dissipation effect and serious heat generation of the end winding coil of the motor stator in the running process of the motor is solved, and the reliability of the motor is improved.
The second purpose of the present invention is to provide a motor using the above-mentioned motor stator, which avoids the disadvantages of the prior art, and the motor stator is characterized in that the cooling conductor is arranged in the end portion of the winding coil, the cooling conductor is used to absorb the heat generated by the winding coil, and the heat conducting member is arranged on the outer peripheral surface of the cooling conductor, and is extended outwards to the outside of the winding coil, and the heat absorbed by the cooling conductor is transferred out of the winding coil by the heat conducting member to dissipate the heat of the winding coil, thereby solving the problem of the performance reduction of the motor caused by the poor heat dissipation effect and serious heat generation of the end winding coil of the motor stator during the operation of the motor, and increasing the reliability of the motor.
Drawings
The invention is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be derived on the basis of the following drawings without inventive effort.
Fig. 1 is a sectional view showing the overall structure of a stator of an electric motor according to the present invention.
Fig. 2 is a top view of the overall structure of a stator of an electric machine of the present invention.
Fig. 3 is a schematic view of the structure of the cooling conductors and the heat conducting members of the stator of an electric machine according to the invention.
Fig. 4 is a schematic structural view of a cooling housing of a stator of an electric machine according to the present invention.
Fig. 5 is a side view of the structure of a cooling housing of a stator of an electric machine of the present invention.
The figure includes:
Detailed Description
The invention is further described with reference to the following examples.
Example 1
A motor stator of this embodiment, as shown in fig. 1-5, including stator core 1 and rule in stator core 1's winding coil 2, the tip of winding coil 2 is located outside stator core 1, be provided with cooling conductor 3 in winding coil 2's the tip, be provided with heat-conducting component 4 on cooling conductor 3's the outer peripheral surface, heat-conducting component 4 by the tip of winding coil 2 is inside to the tip extension outside to the tip. Through set up cooling conductor 3 in the tip of winding coil 2, utilize cooling conductor 3 to absorb the heat that winding coil 2 produced, set up heat-conducting part 4 on the outer peripheral face of cooling conductor 3 simultaneously, and make heat-conducting part 4 outwards extend to outside winding coil 2, thereby utilize heat-conducting part 4 to carry out the heat dissipation of winding coil 2 with the heat transfer that cooling conductor 3 absorbed out winding coil 2, thereby solved because of the poor radiating effect of end winding coil 2 of motor stator among the motor operation process, it is serious to generate heat, and the problem that the motor performance that causes descends, the reliability of motor has been increased. The cooling conductor 3 and the heat conducting member 4 are made of materials (such as copper, aluminum alloy 1050, aluminum alloy 1350 and aluminum alloy 6063) with thermal conductivity larger than 200W/(m.k), and all edges of the cooling conductor 3 and the heat conducting member 4 need to be rounded. The heat conductivity of the cooling conductor 3 and the heat conducting part 4 is more than 200W/(m.k), the heat conductivity of air is only 0.03W/(m.k), and the heat conductivity of the common epoxy resin injection molding material is basically less than 1W/(m.k), so the heat dissipation efficiency of the motor stator can be further greatly improved by selecting the materials of the cooling conductor 3 and the heat conducting part 4.
The number of the heat-conducting members 4 is the same as the number of the slots of the stator core 1. The number of the heat conducting components 4 is the same as the number of the slots of the stator core 1, so that the heat conducting components 4 can ensure that the internal space of the motor stator is not excessively occupied while the best heat conducting effect is achieved, and the internal structure of the motor stator is more compact.
The heat-conducting member 4 is a heat-conducting fan fixed to the outer peripheral surface of the cooling conductor 3. The heat conducting component 4 is a heat conducting fan blade fixed on the outer peripheral surface of the cooling conductor 3, the winding coil 2 is radiated by utilizing the good heat radiating effect of the heat conducting fan blade, and meanwhile, the end part of the winding coil 2 can be wound in the fan blade groove of the corresponding heat conducting fan blade according to the embedded wire groove of the stator core 1 where the winding coil is located, so that the embedded wire of the winding coil 2 is more compact, and unnecessary space waste is reduced.
Both ends of the winding coil 2 are located outside the stator core 1, and cooling conductors 3 are provided in both ends of the winding coil 2. Two ends of winding coil 2 are all located outside stator core 1, all are provided with cooling conductor 3 in two ends of winding coil 2, can increase winding coil 2 and external heat exchange channel, increase the radiating effect.
The cooling conductor 3 comprises two semi-annular cooling conductor substrates 5 which are fixed in a splicing manner. The cooling conductor 3 comprises two semicircular cooling conductor matrixes 5 which are fixedly spliced, when the cooling conductor 3 is installed, the cooling conductor 3 can be split into the two cooling conductor matrixes 5, then the two cooling conductor matrixes 5 are installed in the winding coil 2 and are fixedly spliced to form the cooling conductor 3, and the cooling conductor 3 is convenient to install.
The splicing surfaces of the two semi-annular cooling conductor matrixes 5 are respectively provided with a groove 6 and a boss 7 matched with the groove 6, and the grooves 6 and the bosses are used for splicing the two semi-annular cooling conductor matrixes 5 into the annular cooling conductor 3. The splicing surfaces of the two semi-annular cooling conductor matrixes 5 are respectively provided with the lug bosses 7 with the grooves 6 and the matching grooves 6, the two semi-annular cooling conductor matrixes 5 are spliced into the annular cooling conductor 3, meanwhile, the lug bosses 7 with the grooves 6 and the matching grooves 6 are adopted for splicing, the splicing perfectness of the two cooling conductor matrixes 5 can be guaranteed, and the splicing surfaces do not have any other protruding structures.
The stator core 1 is sleeved with a cooling shell 8, and the heat conducting component 4 is in contact with the inner side surface of the cooling shell 8. Stator core 1 overcoat is equipped with cooling shell 8, and heat-conducting member 4 contacts with cooling shell 8's medial surface, gives off with cooling shell 8 the heat that heat-conducting member 4 derived.
A plurality of cooling channels 9 are formed on the outer side surface of the cooling housing 8, a water inlet 10 and a water outlet 11 are further formed on the outer side surface of the cooling housing 8, and the water inlet 10 and the water outlet 11 are respectively communicated with the cooling channel 9. The outer side surface of the cooling shell 8 is provided with a plurality of cooling flow channels 9, the outer side surface of the cooling shell 8 is further provided with a water inlet 10 and a water outlet 11, the water inlet 10 and the water outlet 11 are respectively communicated with the cooling channels 9, external heat dissipation media are guided into the cooling flow channels 9 through the water inlet 10, heat conducted out by the heat conduction components is absorbed, and the heat dissipation effect is further improved through the water outlet 11.
The plurality of cooling channels 9 are uniformly arranged on the outer side surface of the cooling housing 8 along the radial direction of the cooling housing 8, the water inlet 10 and the water outlet 11 are arranged on the outer side surface of the cooling housing 8 along the axial direction of the cooling housing 8, and the water inlet 10 and the water outlet 11 are symmetrically arranged on the outer side surface of the cooling housing 8. A plurality of cooling flow channels 9 are seted up at cooling housing 8's lateral surface along cooling housing 8's radial equipartition, when having increased cooling channel 9's quantity, the inside heat of motor stator can also evenly be taken away, water inlet 10 and delivery port 11 are seted up at cooling housing 8's lateral surface along cooling housing 8's axial, water inlet 10 and delivery port 11 are the symmetry setting on cooling housing 8's lateral surface, can guarantee that water inlet 10 equals from both sides to delivery port 11's distance, the radiating homogeneity of cooling channel 9 has been guaranteed.
Firstly, embedding a winding coil 2 into a wire embedding groove of a stator core 1 according to a conventional motor wire embedding mode, installing a cooling conductor substrate 5 at the end part, extending a heat conducting part 4 outwards to the outside of the winding coil 2, then respectively placing the end winding coil 2 into a fan blade groove of the heat conducting part 4 corresponding to the wire embedding groove of the stator core 1 where the end winding coil is located, and assembling two cooling conductor substrates 5 at each end into a whole annular cooling conductor 3 through a groove 6 and a boss 7 arranged at the half surface; further, since the cooling conductor 3 and the heat conductive member 4 are made of a metal material having high thermal conductivity, an insulation protection (e.g., a wound imide film, etc.) must be disposed between the end-turn coil 2 and the cooling conductor 3; further, the cooling housing 8 is assembled with the motor stator so that the heat conducting member 4 is in direct contact with the cooling housing 8; furthermore, epoxy resin injection molding materials are filled in gaps of the stator end winding and the lower wire slot, and the cooling conductor 3, the winding coil 2, the stator core 1 and the cooling shell 8 are molded into a whole.
Example 2
This embodiment provides a motor, this motor uses the motor stator described in embodiment 1, because through setting up cooling conductor 3 in the tip of winding coil 2, utilize cooling conductor 3 to absorb the heat that winding coil 2 produced, set up heat-conducting member 4 on the peripheral face of cooling conductor 3 simultaneously, and make heat-conducting member 4 outwards extend to winding coil 2 outside, utilize heat-conducting member 4 to transfer the heat that cooling conductor 3 absorbed out winding coil 2 and thus dispel the heat to winding coil 2, solved because of the poor radiating effect of end winding coil 2 of motor stator in the motor running process, generate heat seriously, and the problem that the motor performance that causes descends, increased the reliability of motor.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (8)
1. The utility model provides a motor stator, includes stator core and rule in stator core's winding coil, its characterized in that: the end part of the winding coil is positioned outside the stator core, a cooling conductor is arranged in the end part of the winding coil, a heat conducting component is arranged on the peripheral surface of the cooling conductor, and the heat conducting component extends from the inside of the end part of the winding coil to the outside of the end part;
the number of the heat conducting components is the same as that of the slots of the stator core, the heat conducting components are heat conducting fan blades fixed on the outer peripheral surface of the cooling conductor, a fan blade slot for accommodating a winding coil is formed in a gap between every two adjacent heat conducting components, the number of the fan blade slots is the same as that of the slots of the stator core, and the end part of the winding coil is wound in the fan blade slot of the corresponding heat conducting fan blade according to the embedded slot of the stator core where the winding coil is located.
2. A stator for an electrical machine, as defined in claim 1, wherein: and two end parts of the winding coil are positioned outside the stator core, and cooling conductors are arranged in the two end parts of the winding coil.
3. A stator for an electrical machine, as defined in claim 1, wherein: the cooling conductor comprises two semi-annular cooling conductor substrates which are fixedly spliced.
4. A stator for an electrical machine according to claim 3, wherein: the splicing surfaces of the two semi-annular cooling conductor matrixes are respectively provided with a groove and a boss matched with the groove, and the grooves and the bosses are used for splicing the two semi-annular cooling conductor matrixes into the annular cooling conductor.
5. A stator for an electrical machine, as defined in claim 1, wherein: the stator core is sleeved with a cooling shell, and the heat conducting component is in contact with the inner side face of the cooling shell.
6. An electric machine stator as claimed in claim 5, wherein: the outer side surface of the cooling shell is provided with a plurality of cooling flow channels, the outer side surface of the cooling shell is also provided with a water inlet and a water outlet, and the water inlet and the water outlet are respectively communicated with the cooling flow channels.
7. A stator for an electrical machine according to claim 6, wherein: the cooling channels are uniformly distributed on the outer side surface of the cooling shell along the radial direction of the cooling shell, the water inlet and the water outlet are arranged on the outer side surface of the cooling shell along the axial direction of the cooling shell, and the water inlet and the water outlet are symmetrically arranged on the outer side surface of the cooling shell.
8. An electric machine characterized by: comprising a stator for an electrical machine according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911235256.XA CN111082572B (en) | 2019-12-05 | 2019-12-05 | Motor stator and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911235256.XA CN111082572B (en) | 2019-12-05 | 2019-12-05 | Motor stator and motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111082572A CN111082572A (en) | 2020-04-28 |
| CN111082572B true CN111082572B (en) | 2021-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911235256.XA Active CN111082572B (en) | 2019-12-05 | 2019-12-05 | Motor stator and motor |
Country Status (1)
| Country | Link |
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| CN (1) | CN111082572B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11150929A (en) * | 1997-11-19 | 1999-06-02 | Denso Corp | Armature of rotating machine, and its manufacture |
| CN201063515Y (en) * | 2007-07-27 | 2008-05-21 | 北京交通大学 | Electric vehicle mounted full enclosed type switch reluctance motor device |
| CN105356671A (en) * | 2015-12-07 | 2016-02-24 | 合肥巨一动力系统有限公司 | Motor stator heat radiation structure |
| CN207766072U (en) * | 2017-11-13 | 2018-08-24 | 中山大洋电机股份有限公司 | A kind of phase-change heat motor stator component and its ventilated machine of application |
| CN209001747U (en) * | 2018-09-04 | 2019-06-18 | 上海盘毂动力科技股份有限公司 | Disc type electric machine and disc type electric machine cooling system |
| CN209170145U (en) * | 2019-01-24 | 2019-07-26 | 北京车和家信息技术有限公司 | Motor and vehicle with it |
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2019
- 2019-12-05 CN CN201911235256.XA patent/CN111082572B/en active Active
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| CN111082572A (en) | 2020-04-28 |
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