CN108880045A - A kind of motor stator structure and motor with auxiliary heat dissipation tooth - Google Patents
A kind of motor stator structure and motor with auxiliary heat dissipation tooth Download PDFInfo
- Publication number
- CN108880045A CN108880045A CN201810706998.5A CN201810706998A CN108880045A CN 108880045 A CN108880045 A CN 108880045A CN 201810706998 A CN201810706998 A CN 201810706998A CN 108880045 A CN108880045 A CN 108880045A
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- CN
- China
- Prior art keywords
- stator
- tooth
- heat dissipation
- motor
- assist
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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
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention discloses a kind of motor stator structure and motor with auxiliary heat dissipation tooth, the structure includes stator yoke, the main tooth of stator, radiate assist tooth, stator winding and stator slot inner cavity, the main tooth of stator includes left main tooth and right main tooth, stator slot inner cavity includes left chamber and right chamber, heat dissipation assist tooth is connect through slot bottom with stator yoke, the main tooth of stator is connected with heat dissipation assist tooth by stator yoke, approximation is in m shape, main tooth tooth is tall and big high in assist tooth tooth, assist tooth uses suitable height to reach ideal heat dissipation effect, the electromagnetic performance of motor cannot be weakened again simultaneously, the main tooth in left and right and assist tooth are separately connected by stator yoke is formed by stator or so inner cavity, stator winding outsourcing insulation, it is placed in stator slot inner cavity.The present invention increases the heat dissipation area of stator winding by assist tooth, reduces the temperature gradient of slot inner conductor, structure is simple, good heat dissipation effect.
Description
Technical field
The invention belongs to motor construction fields, more particularly, to a kind of motor stator knot with auxiliary heat dissipation tooth
Structure and motor.
Background technique
Motor in every field using more and more extensive, in order to comply with efficiently and the demand for development of energy-saving and emission-reduction, needle
The research of the problems such as and low efficiency big to energy consumption of electrical machinery deepens continuously, and becomes so that motor is showed to what high torque density developed
Gesture.All motors are all limited by material (including copper, insulating materials and magnetic material), and electromagnetism limitation and heat are mainly thought of as
Limitation, the two limitations have quantified obtainable torque capacity.Therefore, would generally increase in design in order to improve motor torque density
It is powered on current density, however thus the increase of bring coil copper loss is easy to cause motor temperature excessively high, influences motor and works normally very
To burning motor.Wherein, machine winding is the most hot position of motor, since there are high thermal resistances for equivalent insulating layer, so that in slot
Between the loss calorific value of position winding be difficult to smoothly shed, in turn result in the temperature highest in the middle part of slot.Slot inner conductor temperature point
Cloth is uneven, and winding localized hyperthermia directly limits the overall performance of motor, therefore is directed to high torque density electrical machine, and how is research
It is most important to effectively improve winding thermal diffusivity.
Motor improves the class of insulation of motor to improve the heat resisting temperature of insulation system at present, and high heat resistance grade
Insulating materials it is expensive；Or have the external cooling air quantity of increase, increase the modes such as internal cooling channel, these result in electricity
Machine structure tends to be complicated, and increases the manufacturing cost of motor, if in the case where having special operation condition or size requires, and
This radiating mode cannot be used, and greatly limits the heat dissipation effect of motor.
Summary of the invention
Aiming at the above defects or improvement requirements of the prior art, it is fixed that the present invention provides a kind of motors with auxiliary heat dissipation tooth
Thus minor structure and motor solve existing using the external cooling air quantity of class of insulation raising, increase of motor, increase is internal cold
But existing for the modes such as channel it is at high cost, structure is complicated and heat dissipation effect limitation the technical issues of.
To achieve the above object, according to one aspect of the present invention, a kind of motor stator with auxiliary heat dissipation tooth is provided
Structure, including：The main tooth of stator yoke, stator and heat dissipation assist tooth；
The heat dissipation auxiliary tooth position is between two adjacent main teeth of stator, through slot bottom and the stator yoke phase
Even.
Preferably, the main tooth of the stator includes left main tooth and right main tooth；
The left main tooth and the right main tooth are connected by the stator yoke with the heat dissipation assist tooth, and the left master
Tooth, the right main tooth and the heat dissipation assist tooth are in m shape.
Preferably, the motor stator structure further includes：Stator slot inner cavity；The stator slot inner cavity includes stator slot left chamber
With stator slot right chamber；
The left main tooth is connected with the heat dissipation assist tooth and the stator yoke, and to be formed by rectangular enclosure be described
Stator slot left chamber, the right main tooth is connected with the heat dissipation assist tooth and the stator yoke is formed by rectangular enclosure as institute
State stator slot right chamber.
Preferably, the left main tooth is identical with the structure size of the right main tooth.
Preferably, the stator slot left chamber is identical with the Cavity surface of the stator slot right chamber.
Preferably, the tooth height of the heat dissipation assist tooth is less than the tooth height of the main tooth of the stator.
Preferably, the motor stator structure further includes：Stator winding, the stator winding are placed on institute by packet insulation
It states intracavitary in stator slot.
It is another aspect of this invention to provide that a kind of motor is provided, including motor stator knot described in above-mentioned any one
Structure.
In general, through the invention it is contemplated above technical scheme is compared with the prior art, can obtain down and show
Beneficial effect：
(1) heat dissipation area for increasing stator winding by assist tooth, reduces the temperature gradient of slot inner conductor, and structure is simple,
It does not need to increase motor volume or increase cooling duct etc., size-constrained wait is also suitable under special operation conditions, and assists
The selection of teeth material can further improve heat dissipation effect, improve electric efficiency, extend motor service life, lower cost
It is suitble to large-scale application.
(2) thermal coefficient of insulating layer of conductor is low, and stator winding is ineffective by the outside radiations heat energy of air, and dissipates
The design of heat auxiliary toothing directly increases the contact area of stator winding and stator tooth, and the increase of heat dissipation area facilitates winding
Heat derives improve winding temperature field distribution, reduce winding temperature gradient in slot, improve integral heat sink effect.
(3) assist tooth can be further improved heat dissipation effect using the material of high thermal conductivity coefficient, substantially reduce winding highest
Temperature.
(4) promotion of cooling effect does not need to increase other cooling ducts, and cost is relatively low, is conveniently widely popularized.
(5) structure of assist tooth is embedded in stator yoke, is easily achieved in technique.
(6) motor thermic load can be improved using the stator laminating structure in design of electrical motor, further increases motor torque
Density.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram with auxiliary heat dissipation tooth stator provided in an embodiment of the present invention, wherein assist tooth is
Silicon steel sheet；
Fig. 2 is another stator structure schematic diagram with auxiliary heat dissipation tooth provided in an embodiment of the present invention, wherein assist tooth
For other materials；
In all the appended drawings, identical appended drawing reference is used to denote the same element or structure, wherein：1- stator yoke,
The main tooth of 2- stator, 3- heat dissipation assist tooth, 4- stator winding, 5- stator slot inner cavity, the left main tooth of 6-, the right main tooth of 7-, 8- stator slot are left
Chamber, 9- stator slot right chamber.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below
Not constituting a conflict with each other can be combined with each other.
The present invention is not limited by motor type, provides a kind of motor stator structure with auxiliary heat dissipation toothing, is led to
The heat dissipation area that assist tooth increases stator winding is crossed, the temperature gradient of slot inner conductor is reduced, structure is simple, does not need to increase motor
Volume or increase cooling duct etc. for being also suitable under size-constrained equal special operation conditions, and assist the selection energy of teeth material
It is enough further to improve heat dissipation effect, electric efficiency is improved, motor service life is extended, lower cost is also suitble to answer on a large scale
With popularization.
Fig. 1 show a kind of band auxiliary heat dissipation tooth stator structure figure, and stator structure includes stator yoke 1, the main tooth of stator
2, heat dissipation assist tooth 3, stator winding 4 and stator slot inner cavity 5；
Wherein, the radiate teeth portion cross section of assist tooth 3 can be polygons such as rectangle, trapezoidal or triangle and other
Irregular shape does not specifically do uniqueness restriction using which kind of shape embodiment of the present invention.
Wherein, the main tooth 2 of stator yoke 1, stator is silicon steel sheet, and the material of the assist tooth 3 that radiates can be the same as stator yoke 1 and fixed
The main tooth 2 of son is identical, is silicon steel sheet, assist tooth is integrated with stator at this time can simplify as Fig. 1 structure.
Assist tooth also can choose the other materials of high thermal conductivity coefficient, is illustrated in figure 2 and a kind of determines with auxiliary heat dissipation tooth
Minor structure figure (assist tooth is other highly heat-conductive materials), heat dissipation assist tooth 3 is embedded in stator yoke 1, and two size shapes are complete
Identical left main tooth 6 and right main tooth 7 are connected by stator yoke 1 with heat dissipation assist tooth 3, and approximation is in m shape.Left main tooth 6 and heat dissipation
Assist tooth 3 and stator yoke 1 are connected, and to be formed by rectangular enclosure be stator slot left chamber 8, right main tooth 7 and heat dissipation assist tooth 3 with
And the connected rectangular enclosure that is formed by of stator yoke 1 is stator slot right chamber 9, the rectangle Cavity surface size shape of left and right chamber is all the same.
Stator winding 4 is placed in stator slot inner cavity 5.
Left main tooth 6 is identical with right main 7 structure size of tooth, and the Cavity surface of stator slot left chamber 8 and stator slot right chamber 9 is rectangle
And the two is identical.
Heat dissipation assist tooth 3 is embedded in stator yoke 1, is easier to realize in this structure process, and the tooth for the assist tooth 3 that radiates is high
H is less than the high H of tooth of the main tooth 2 of stator, and increased heat dissipation 3 structure of assist tooth does not influence the magnetic field of stator yoke 1 at this time, and to teeth portion
Distribution of Magnetic Field influences smaller, it is ensured that motor can operate normally.
The material of high thermal conductivity coefficient may be selected in the material of motor radiating assist tooth 3, and the heat dissipation assist tooth 3 added is considered as
Stator slot inner cavity 5 two identical units, i.e. stator slot left chamber 8 and stator slot right chamber 9, therefore stator winding 4 have been separated into
It has been also divided into two units.Therefore stator winding 4 is considerably increased with the contact area of stator tooth, due to wire insulation
Thermal coefficient can preferably export the heat that winding energization generates, change far below auxiliary teeth material, therefore in motor work
Stator winding has been apt to it and has passed through the ineffective defect of the outside radiations heat energy of air, to effectively reduce winding temperature rise, has improved
Integral heat sink effect.
Motor thermic load can be improved using said stator lamination structure in design of electrical motor, be suitable for this high torque density
Motor, and structure is simple, cost is relatively low, is suitble to large-scale promotion application.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (8)
1. a kind of motor stator structure with auxiliary heat dissipation tooth, which is characterized in that including：Stator yoke (1), the main tooth of stator (2)
And heat dissipation assist tooth (3)；
Heat dissipation assist tooth (3) is between two adjacent main teeth of stator (2), through slot bottom and the stator yoke
(1) it is connected.
2. motor stator structure according to claim 1, which is characterized in that the main tooth of stator (2) includes left main tooth (6)
With right main tooth (7)；
The left main tooth (6) and the right main tooth (7) are connected by the stator yoke (1) with the heat dissipation assist tooth (3), and
The left main tooth (6), the right main tooth (7) and the heat dissipation assist tooth (3) are in m shape.
3. motor stator structure according to claim 2, which is characterized in that the motor stator structure further includes：Stator
Slot inner cavity (5)；The stator slot inner cavity (5) includes stator slot left chamber (8) and stator slot right chamber (9)；
The left main tooth (6) is connected with the heat dissipation assist tooth (3) and the stator yoke (1) to be formed by rectangular enclosure and is
The stator slot left chamber (8), the right main tooth (7) are connected institute's shape with the heat dissipation assist tooth (3) and the stator yoke (1)
At rectangular enclosure be the stator slot right chamber (9).
4. motor stator structure according to claim 2, which is characterized in that the left main tooth (6) and the right main tooth (7)
Structure size it is identical.
5. motor stator structure according to claim 3, which is characterized in that the stator slot left chamber (8) and the stator
The Cavity surface of slot right chamber (9) is identical.
6. according to claim 1 to motor stator structure described in 5 any one, which is characterized in that the heat dissipation assist tooth (3)
Tooth height be less than the main tooth of the stator (2) tooth it is high.
7. motor stator structure according to claim 6, which is characterized in that the motor stator structure further includes：Stator
Winding (4), the stator winding (4) are placed in the stator slot inner cavity (5) by packet insulation.
8. a kind of motor, which is characterized in that including motor stator structure described in claim 1 to 7 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810706998.5A CN108880045A (en) | 2018-07-02 | 2018-07-02 | A kind of motor stator structure and motor with auxiliary heat dissipation tooth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810706998.5A CN108880045A (en) | 2018-07-02 | 2018-07-02 | A kind of motor stator structure and motor with auxiliary heat dissipation tooth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108880045A true CN108880045A (en) | 2018-11-23 |
Family
ID=64297955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810706998.5A Pending CN108880045A (en) | 2018-07-02 | 2018-07-02 | A kind of motor stator structure and motor with auxiliary heat dissipation tooth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108880045A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109391090A (en) * | 2018-09-29 | 2019-02-26 | 宁波诺丁汉大学 | Conducive to the stator, rotor and motor of heat dissipation |
| CN109599958A (en) * | 2018-12-20 | 2019-04-09 | 江苏大学 | A kind of high reliability, high power density novel permanent-magnet motor |
| EP3772798A1 (en) * | 2019-08-06 | 2021-02-10 | Hamilton Sundstrand Corporation | Segmented and individually wound stator core for electric propulsion motor |
| CN113258693A (en) * | 2021-04-16 | 2021-08-13 | 上海大学 | Novel permanent magnet synchronous motor stator structure with high heat conduction and low pulsation |
| CN113904472A (en) * | 2021-09-14 | 2022-01-07 | 华中科技大学 | Rotor permanent magnet double-salient-pole motor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103208871A (en) * | 2012-01-13 | 2013-07-17 | 发那科株式会社 | Electric Motor Comprising Iron Core Having Primary Teeth And Secondary Teeth |
| CN106655563A (en) * | 2016-12-01 | 2017-05-10 | 华中科技大学 | Motor cooling structure and non-casing motor with same |
-
2018
- 2018-07-02 CN CN201810706998.5A patent/CN108880045A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103208871A (en) * | 2012-01-13 | 2013-07-17 | 发那科株式会社 | Electric Motor Comprising Iron Core Having Primary Teeth And Secondary Teeth |
| CN106655563A (en) * | 2016-12-01 | 2017-05-10 | 华中科技大学 | Motor cooling structure and non-casing motor with same |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109391090A (en) * | 2018-09-29 | 2019-02-26 | 宁波诺丁汉大学 | Conducive to the stator, rotor and motor of heat dissipation |
| CN109599958A (en) * | 2018-12-20 | 2019-04-09 | 江苏大学 | A kind of high reliability, high power density novel permanent-magnet motor |
| EP3772798A1 (en) * | 2019-08-06 | 2021-02-10 | Hamilton Sundstrand Corporation | Segmented and individually wound stator core for electric propulsion motor |
| CN113258693A (en) * | 2021-04-16 | 2021-08-13 | 上海大学 | Novel permanent magnet synchronous motor stator structure with high heat conduction and low pulsation |
| CN113904472A (en) * | 2021-09-14 | 2022-01-07 | 华中科技大学 | Rotor permanent magnet double-salient-pole motor |
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181123 |
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| RJ01 | Rejection of invention patent application after publication |