CN114123567A - Stator water-cooling structure of stator non-magnetic yoke axial flux permanent magnet motor - Google Patents
Stator water-cooling structure of stator non-magnetic yoke axial flux permanent magnet motor Download PDFInfo
- Publication number
- CN114123567A CN114123567A CN202111292641.5A CN202111292641A CN114123567A CN 114123567 A CN114123567 A CN 114123567A CN 202111292641 A CN202111292641 A CN 202111292641A CN 114123567 A CN114123567 A CN 114123567A
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- CN
- China
- Prior art keywords
- stator
- water
- winding
- supports
- permanent magnet
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
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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
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
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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
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
- H02K1/182—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to stators axially facing the rotor, i.e. with axial or conical air gap
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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
- H02K3/18—Windings for salient poles
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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
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/325—Windings characterised by the shape, form or construction of the insulation for windings on salient poles, such as claw-shaped poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
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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
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
- H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
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- 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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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/12—Transversal flux machines
Abstract
The invention discloses a stator water cooling structure of a stator yoke-free axial flux permanent magnet motor, which aims to improve the heat dissipation capacity of a stator core and a winding. According to the stator yoke-free modular axial flux permanent magnet motor cooling structure, the cooling water channel is arranged between the stator core and the winding of the motor, so that cooling liquid can be simultaneously contacted with the stator core and the winding, the contact area is large, the heat dissipation capacity of the stator core and the winding is greatly improved, the uniformity of the temperature distribution of the stator core and the winding is obviously improved, and the heat dissipation capacity of the motor is greatly improved.
Description
Technical Field
The invention relates to the technical field of permanent magnet motors, in particular to a stator water cooling structure of a permanent magnet motor with a non-magnetic yoke and axial magnetic flux.
Background
The axial magnetic motor without magnetic yoke for stator is one kind of permanent magnet motor and has the advantages of small size, high power density, high efficiency, etc. However, the conventional stator-yoke-free modular axial flux permanent magnet motor has a compact structure and high power density, and the huge loss generated by a compact space easily causes the excessively high temperature rise of a winding and damages the insulation of the winding, so that how to improve the heat dissipation capacity of a stator core and the winding becomes a problem to be solved by those skilled in the art. The cooling system of the motor adopted in the prior art usually makes the cooling liquid only contact with the winding, which often results in poor cooling effect of the stator core.
The invention aims to provide a stator water-cooling structure of a stator of a permanent magnet motor without a magnetic yoke and axial magnetic flux, so as to improve the heat dissipation capacity of a stator core and a winding.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a stator water cooling structure of a permanent magnet motor with a non-magnetic yoke and an axial magnetic flux.
In order to achieve the purpose, the invention provides the following technical scheme:
a stator water cooling structure of a stator non-magnetic yoke axial flux permanent magnet motor comprises a stator core, a water cooling device, an armature winding and a machine shell, wherein the water cooling device is composed of a plurality of stator supports distributed in an annular array; the outer rings of the adjacent stator supports are connected through two first baffle plates, the inner rings of the adjacent stator supports are connected through two second baffle plates, and openings communicated with the interior of the stator supports are formed in the joints of the two ends of each stator support; the part of the stator pole in the stator bracket is sealed by a third baffle plate arranged on the outer peripheral surface of the stator pole; the armature winding is divided into two layers and wound on the water cooling device, a first water channel is formed between the two layers of armature winding and the first baffle, a second water channel is formed between the two layers of armature winding and the second baffle, and a third water channel positioned between the stator pole and the winding is formed between the third baffle and the stator support; the shell is fixed on the periphery of the armature windings, and a gap between the shell and the two layers of armature windings is encapsulated by epoxy resin; and the upper side and the lower side of the shell are correspondingly provided with a water inlet and a water outlet, and the upper side and the lower side of the water cooling device are respectively provided with through holes corresponding to the water inlet and the water outlet.
In a preferred embodiment of the present invention, a spoiler is disposed between the stator support located on the left and right sides of the water cooling device and the third baffle plate located in the stator support.
The invention has the following beneficial effects:
according to the stator yoke-free modular axial flux permanent magnet motor cooling structure, the cooling water channel is arranged between the stator core and the winding of the motor, so that cooling liquid can be simultaneously contacted with the stator core and the winding, the contact area is large, the heat dissipation capacity of the stator core and the winding is greatly improved, the uniformity of the temperature distribution of the stator core and the winding is obviously improved, and the heat dissipation capacity of the motor is greatly improved.
Drawings
Fig. 1 is an exploded view of a stator water-cooling structure of a stator yokeless axial flux permanent magnet motor according to an embodiment of the present invention;
fig. 2 is a schematic view of a cooling water channel of a stator water-cooling structure of a stator permanent magnet motor without a magnetic yoke according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, a stator water-cooling structure of a stator permanent magnet motor without a magnetic yoke and axial magnetic flux comprises a stator core 1, a water-cooling device 2, an armature winding 3 and a casing 4, wherein the water-cooling device 2 is composed of a plurality of stator supports 2.1 distributed in an annular array, the stator core 1 is of a block type structure and is provided with a plurality of stator poles 1.1, and the stator poles 1.1 correspond to the stator supports 2.1 and are fixed in the stator supports 2.1 through epoxy resin potting; the outer rings of the adjacent stator supports 2.1 are connected through two first baffles 9, the inner rings of the adjacent stator supports are connected through two second baffles 10, and openings communicated with the interiors of the stator supports 2.1 are formed in the joints of the two ends of each stator support; the part of the stator pole 1.1 located in the stator frame 2.1 is sealed by a third baffle plate 11 arranged around the outer circumferential surface; the armature winding 3 is divided into two layers and wound on the water cooling device, a first water channel 5 is formed between the two layers of the armature winding 3 and the first baffle 9, a second water channel 6 is formed between the two layers of the armature winding 3 and the second baffle 10, and a third water channel 7 positioned between the stator pole 1.1 and the armature winding 3 is formed between the third baffle 11 and the stator support 2.1; the shell 4 is fixed on the periphery of the armature winding 3, and a gap between the shell and the armature winding 3 is encapsulated by epoxy resin; and, there are water inlet 12 and water outlet 13 on the upper and lower both sides of the said chassis 4 correspondingly, there are through holes corresponding to said water inlet 12 and water outlet 13 on the upper and lower both sides of the said water-cooling plant 2 separately, the through hole is offered on the outer circumference of the stator support 2.1 corresponding to water inlet 12, water outlet 13.
As a preferable configuration of the embodiment of the present invention, a spoiler 8 is disposed between the stator support 2.1 located on the left and right sides of the water cooling device 2 and the third baffle 11 located in the stator support 2.1.
The working process of the invention is as follows: the cooling water is injected into the water inlet 12 to enter the first water channel 5, then flows to the third water channel 7 and the second water channel 6, after the cooling water flows through the first half-cycle water channel, the first water channel 5 is blocked by the spoiler 8, the flowing path of the cooling water is from the second water channel 6 to the third water channel 7 and the first water channel 5 between the stator pole and the winding, the cooling water is fully contacted with the stator core and the winding, and the heat dissipation capacity is improved to the maximum extent.
According to the stator yoke-free modular axial flux permanent magnet motor cooling structure, the cooling water channel is arranged between the stator core and the winding of the motor, so that cooling liquid can be simultaneously contacted with the stator core and the winding, the contact area is large, the heat dissipation capacity of the stator core and the winding is greatly improved, the uniformity of the temperature distribution of the stator core and the winding is obviously improved, and the heat dissipation capacity of the motor is greatly improved.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims above, any of the claimed embodiments may be used in any combination. The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Claims (2)
1. A stator water cooling structure of a stator non-magnetic yoke axial flux permanent magnet motor comprises a stator core, a water cooling device, an armature winding and a machine shell, and is characterized in that the water cooling device is composed of a plurality of stator supports distributed in an annular array, the stator core is of a block type structure and is provided with a plurality of stator poles, and the stator poles correspond to the stator supports and are fixed in the stator supports through epoxy resin in an encapsulating manner; the outer rings of the adjacent stator supports are connected through two first baffle plates, the inner rings of the adjacent stator supports are connected through two second baffle plates, and openings communicated with the interior of the stator supports are formed in the joints of the two ends of each stator support; the part of the stator pole in the stator bracket is sealed by a third baffle plate arranged on the outer peripheral surface of the stator pole; the armature winding is divided into two layers and wound on the water cooling device, a first water channel is formed between the two layers of armature winding and the first baffle, a second water channel is formed between the two layers of armature winding and the second baffle, and a third water channel positioned between the stator pole and the winding is formed between the third baffle and the stator support; the shell is fixed on the periphery of the armature windings, and a gap between the shell and the two layers of armature windings is encapsulated by epoxy resin; and the upper side and the lower side of the shell are correspondingly provided with a water inlet and a water outlet, and the upper side and the lower side of the water cooling device are respectively provided with through holes corresponding to the water inlet and the water outlet.
2. The stator water-cooling structure of the stator yokeless axial flux permanent magnet motor of claim 1, wherein spoilers are arranged between the stator supports positioned at the left and right sides of the water-cooling device and the third baffles positioned in the stator supports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111292641.5A CN114123567A (en) | 2021-11-03 | 2021-11-03 | Stator water-cooling structure of stator non-magnetic yoke axial flux permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111292641.5A CN114123567A (en) | 2021-11-03 | 2021-11-03 | Stator water-cooling structure of stator non-magnetic yoke axial flux permanent magnet motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114123567A true CN114123567A (en) | 2022-03-01 |
Family
ID=80380357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111292641.5A Withdrawn CN114123567A (en) | 2021-11-03 | 2021-11-03 | Stator water-cooling structure of stator non-magnetic yoke axial flux permanent magnet motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114123567A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114977564A (en) * | 2022-06-16 | 2022-08-30 | 沈阳工业大学 | Stator liquid cooling structure and stator structure of stator yoke-free disc type motor |
| WO2024036659A1 (en) * | 2022-08-16 | 2024-02-22 | 浙江盘毂动力科技有限公司 | Cooling structure, stator, axial magnetic field motor, and assembly method thereof |
-
2021
- 2021-11-03 CN CN202111292641.5A patent/CN114123567A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114977564A (en) * | 2022-06-16 | 2022-08-30 | 沈阳工业大学 | Stator liquid cooling structure and stator structure of stator yoke-free disc type motor |
| US11855487B1 (en) | 2022-06-16 | 2023-12-26 | Shenyang University Of Technology | Stator liquid cooling structure and stator structure of stator yokeless disc motor |
| WO2024036659A1 (en) * | 2022-08-16 | 2024-02-22 | 浙江盘毂动力科技有限公司 | Cooling structure, stator, axial magnetic field motor, and assembly method thereof |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20220301 |
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| WW01 | Invention patent application withdrawn after publication |