CN221202248U - Motor stator punching structure, motor and automobile - Google Patents
Motor stator punching structure, motor and automobile Download PDFInfo
- Publication number
- CN221202248U CN221202248U CN202323217685.9U CN202323217685U CN221202248U CN 221202248 U CN221202248 U CN 221202248U CN 202323217685 U CN202323217685 U CN 202323217685U CN 221202248 U CN221202248 U CN 221202248U
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- CN
- China
- Prior art keywords
- stator
- motor
- grooves
- heat dissipation
- tooth
- Prior art date
- 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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Links
- 238000004080 punching Methods 0.000 title abstract description 23
- 230000017525 heat dissipation Effects 0.000 claims abstract description 27
- 238000003466 welding Methods 0.000 claims abstract description 10
- 238000009826 distribution Methods 0.000 claims abstract description 9
- 239000000110 cooling liquid Substances 0.000 claims abstract description 8
- 238000003475 lamination Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model provides a motor stator punching structure, which comprises a stator yoke part, wherein a plurality of stator teeth are circumferentially arranged on the inner circumference of the stator yoke part at intervals, stator grooves are arranged between two adjacent stator teeth, and the motor stator punching structure further comprises: the heat dissipation grooves are circumferentially and uniformly distributed on the outer circle of the stator yoke, so that the contact area between the stator yoke and the cooling liquid is increased; the tooth part grooves are formed in the end part of each stator tooth, the distribution of air gaps along the circumferential direction is changed, the heat dissipation grooves are formed by connecting a plurality of continuous grooves, a plurality of groups of heat dissipation grooves are circumferentially distributed on the outer circle of the stator yoke, a plurality of welding spots are circumferentially distributed on the outer circle of the stator yoke, and the welding spots are uniformly distributed among the groups of heat dissipation grooves.
Description
Technical Field
The utility model relates to the technical field of motors, in particular to a motor stator punching sheet structure, a motor and an automobile.
Background
The driving motor of the electric vehicle mainly comprises a stator and a rotor. The motor rotor is a rotating part in the motor and is a motor power output mechanism, and the motor rotor consists of a rotor core, carbon steel or conducting bars and the like. The motor stator is a part fixed in the motor, generates a rotating magnetic field, pushes the rotor to rotate, and consists of a stator core, a coil winding and the like. The stator and rotor iron cores are formed by punching sheets with different specifications, which are formed by punching silicon steel sheets, so as to be suitable for motor stators and rotors with different powers. The motor works in such a way that the magnetic field acts on the current to rotate the motor. The driving motor is not separated from the use of automobiles such as electric vehicles, the traditional electric vehicle driving motor generally adopts a shell water channel for cooling, and the heat generated by a stator is taken away by cooling water in the water channel, so that the stator is cooled. However, the motor stator in this way has low heat dissipation efficiency and low motor power density. With the continuous improvement of the power density requirements of the motor of the passenger car at home and abroad, the oil cooling technology with higher heat dissipation efficiency will become a trend, and the NVH performance of the motor has very high user perception, and the use experience of a driver will be directly affected.
The existing oil cooling technology has the defects that the heat dissipation efficiency is higher than that of a water cooling technology, the power density of a motor is improved, but the aim of efficient heat dissipation still cannot be achieved, a motor stator punching sheet structure needs to be further designed to realize efficient heat dissipation of the motor, NVH noise of the motor is improved on the basis, and the driving experience of a driver is improved.
Disclosure of utility model
The embodiment of the utility model aims to provide a motor stator punching sheet structure, a motor and an automobile, and solves the problems of low motor heat dissipation efficiency, low motor power density and high motor NVH noise.
In order to achieve the above object, an embodiment of the present utility model provides a stator punching structure of a motor, including a stator yoke, a plurality of stator teeth are circumferentially arranged on an inner circumference of the stator yoke at intervals, and a stator slot is arranged between two adjacent stator teeth, and the stator punching structure further includes:
The heat dissipation grooves are circumferentially and uniformly distributed on the outer circle of the stator yoke, so that the contact area between the stator yoke and the cooling liquid is increased;
And the tooth part grooves are arranged at the end parts of each stator tooth, so that the distribution of the air gap along the circumferential direction is changed.
Optionally, the heat dissipation grooves are formed by connecting a plurality of continuous grooves, and a plurality of groups of heat dissipation grooves are circumferentially distributed on the outer circle of the stator yoke.
Optionally, the groove is a rectangular groove.
Optionally, a plurality of welding spots are circumferentially distributed on the outer circle of the stator yoke part, and the plurality of welding spots are uniformly distributed among the plurality of groups of heat dissipation grooves.
Optionally, the tooth portion groove is rectangular with an opening direction facing the center direction of the stator yoke portion.
Optionally, the rectangular tooth grooves are symmetrical about the central axis of the stator teeth.
A motor comprises the motor stator punching sheet structure.
An automobile comprises the motor stator punching sheet structure.
The utility model has the following advantages or beneficial effects:
1. An array of continuous rectangular radiating grooves are added near the outer circle of the stator punching sheet, and the cooling liquid can be cooled through the continuous rectangular radiating grooves of the outer circle by increasing the contact area between the yoke part of the stator punching sheet and the cooling liquid, so that the radiating effect of the motor is improved, and the power density of the motor is further improved;
2. Rectangular tooth grooves are formed in the stator tooth parts, and the distribution of the air gaps along the circumferential direction is changed, so that the magnetic field distribution condition at the air gaps is improved, the cogging torque is reduced, and the NVH noise is reduced;
3. the stator can be fixed together through welding spots on the punching sheet, and the stator has compact structure, good reliability, simple and effective structure and cost saving.
Drawings
Fig. 1 is a schematic structural diagram of a stator lamination structure of a motor according to an embodiment of the present utility model;
Fig. 2 is an enlarged view of fig. 1 of a stator lamination structure of a motor according to an embodiment of the present utility model;
Fig. 3 is a schematic view of a stator tooth of a stator lamination structure of a motor according to an embodiment of the present utility model.
Wherein: stator yoke 1, stator teeth 2, tooth part grooves 3, stator grooves 4, welding spots 5 and heat dissipation grooves 6.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The NVH performance of an automobile refers to Noise, vibration, harshness, which are noise, vibration and harshness, are used for measuring the quality problem of automobile manufacture, and refers to a comprehensive problem of the automobile, and basically, a great part of problems on the automobile are related to the NVH performance of the automobile.
As shown in fig. 1-3, an embodiment of the present utility model provides a stator punching structure of a motor, including a stator yoke 1, a plurality of stator teeth 2 are circumferentially arranged on an inner circle of the stator yoke 1 at intervals, and a stator slot 4 is arranged between two adjacent stator teeth 2, and further including:
As shown in fig. 1-2, the heat dissipation grooves 6 are uniformly distributed on the outer circle of the stator yoke 1 in the circumferential direction, so that the contact area between the stator yoke 1 and the cooling liquid is increased, the heat dissipation grooves 6 are formed by connecting a plurality of continuous rectangular grooves, a plurality of groups of heat dissipation grooves 6 are distributed on the outer circle of the stator yoke 1 in the circumferential direction, a plurality of groups of continuous rectangular heat dissipation grooves 6 are added near the outer circle of the stator punching sheet, and the cooling liquid can be cooled through the continuous rectangular heat dissipation grooves 6 on the outer circle by increasing the contact area between the yoke of the stator punching sheet and the cooling liquid, so that the heat dissipation effect of the motor is improved, and the power density of the motor is further improved;
the welding spots 5 are circumferentially distributed on the outer circle of the stator yoke part 1, the welding spots 5 are uniformly distributed among a plurality of groups of heat dissipation grooves 6, the stator can be fixed together through the welding spots 5 on the punching sheet, and the stator has the advantages of compact structure, good reliability, simple and effective structure and cost saving;
As shown in fig. 3, the tooth grooves 3 are formed at the end of each stator tooth 2, the distribution of the air gap along the circumferential direction is changed, the tooth grooves 3 are rectangular with the opening direction facing the center direction of the stator yoke 1, the rectangular tooth grooves 3 are symmetrical about the central axis of the stator teeth 2, the rectangular tooth grooves 3 are formed at the end of the stator teeth 2, the distribution of the air gap along the circumferential direction is changed, the magnetic field distribution at the air gap is improved, the cogging torque is reduced, the NVH noise is reduced, rectangular grooves are formed at the inner circle of the stator punching teeth, the air gap at the rectangular grooves is increased, the air gap magnetic density is reduced, the distribution of the air gap and the air gap magnetic density along the circumferential direction is changed, the amplitude of partial order harmonic of the air gap magnetic density is reduced, and the harmonic amplitude of the air gap magnetic density is in direct proportion to the cogging torque, so that the cogging torque can be reduced by forming the rectangular grooves.
In addition, the cogging torque can cause torque pulsation, and then the motor is caused to generate vibration and noise, and the smaller the cogging torque is, the smaller the torque pulsation is, so that the NVH performance can be improved by forming the rectangular grooves.
A motor comprises the motor stator punching sheet structure.
An automobile comprises the motor stator punching sheet structure.
The utility model improves the heat dissipation efficiency of the motor, improves the power density of the motor and reduces the NVH noise of the motor.
The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.
Claims (8)
1. The utility model provides a motor stator towards piece structure, includes stator yoke portion, circumference interval is provided with a plurality of stator tooth on the interior circumference of stator yoke portion, and is equipped with the stator groove between two adjacent stator teeth, its characterized in that still includes:
The heat dissipation grooves are circumferentially and uniformly distributed on the outer circle of the stator yoke, so that the contact area between the stator yoke and the cooling liquid is increased;
And the tooth part grooves are arranged at the end parts of each stator tooth, so that the distribution of the air gap along the circumferential direction is changed.
2. The motor stator lamination as defined in claim 1 wherein: the heat dissipation grooves are formed by connecting a plurality of continuous grooves, and a plurality of groups of heat dissipation grooves are circumferentially distributed on the outer circle of the stator yoke.
3. The motor stator lamination as defined in claim 2 wherein: the groove is a rectangular groove.
4. A motor stator lamination as defined in claim 3, wherein: the outer circle of the stator yoke part is also circumferentially provided with a plurality of welding spots which are uniformly distributed among a plurality of groups of heat dissipation grooves.
5. The motor stator lamination as defined in claim 1 wherein: the tooth part groove is rectangular with an opening direction facing the center direction of the stator yoke part.
6. The motor stator lamination as defined in claim 5 wherein: the rectangular tooth grooves are symmetrical about the central axis of the stator tooth.
7. An electric machine comprising the electric machine stator lamination structure of any one of claims 1-6.
8. An automobile comprising the motor stator lamination structure of any one of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323217685.9U CN221202248U (en) | 2023-11-28 | 2023-11-28 | Motor stator punching structure, motor and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323217685.9U CN221202248U (en) | 2023-11-28 | 2023-11-28 | Motor stator punching structure, motor and automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221202248U true CN221202248U (en) | 2024-06-21 |
Family
ID=91521028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323217685.9U Active CN221202248U (en) | 2023-11-28 | 2023-11-28 | Motor stator punching structure, motor and automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221202248U (en) |
-
2023
- 2023-11-28 CN CN202323217685.9U patent/CN221202248U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |