CN114374281B - Stator punching structure of low-noise oil-cooled flat wire motor - Google Patents

Stator punching structure of low-noise oil-cooled flat wire motor Download PDF

Info

Publication number
CN114374281B
CN114374281B CN202210088434.6A CN202210088434A CN114374281B CN 114374281 B CN114374281 B CN 114374281B CN 202210088434 A CN202210088434 A CN 202210088434A CN 114374281 B CN114374281 B CN 114374281B
Authority
CN
China
Prior art keywords
stator
oil
flat wire
tooth
edge
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.)
Active
Application number
CN202210088434.6A
Other languages
Chinese (zh)
Other versions
CN114374281A (en
Inventor
梁德志
钟运平
杨国威
陈兆辉
张梓梁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Henan Tongyu New Source Power Co ltd
Original Assignee
Henan Tongyu New Source Power Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Henan Tongyu New Source Power Co ltd filed Critical Henan Tongyu New Source Power Co ltd
Priority to CN202210088434.6A priority Critical patent/CN114374281B/en
Publication of CN114374281A publication Critical patent/CN114374281A/en
Application granted granted Critical
Publication of CN114374281B publication Critical patent/CN114374281B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • H02K1/165—Shape, form or location of the slots
    • 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
    • H02K3/345—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation between conductor and core, e.g. slot insulation
    • 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
    • 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

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

The invention discloses a stator punching structure of a low-noise oil-cooled flat wire motor, which comprises a stator punching body, wherein a plurality of stator teeth are circumferentially and equally distributed on the stator punching body, and stator grooves are arranged between two adjacent stator teeth, and the stator punching structure is characterized in that: and each stator tooth is provided with a pair of oil holes which are symmetrically distributed about the center line of the stator tooth. The cold flat wire stator punching sheet is provided with the oil holes, the positions of the oil holes are positioned on two sides of the root of the wider stator tooth (the part close to the center of the stator punching sheet is the top of the stator tooth, and the part far away from the center of the stator punching sheet is the root of the stator tooth), and the oil holes are not arranged on the center line of the stator tooth, so that the oil holes cannot influence the flux of a magnetic field and the torque output of a motor. In addition, a plurality of bosses are additionally arranged on the stator teeth, so that the strength of the stator teeth can be increased, the stress deformation of the teeth part is improved, and the vibration noise of the motor is improved. And the utilization rate of the stator slot can be increased, which is beneficial to heat dissipation of the winding.

Description

Stator punching structure of low-noise oil-cooled flat wire motor
Technical Field
The invention relates to the technical field of motors, in particular to a stator punching structure of a low-noise oil-cooled flat wire motor.
Background
In the prior art, rectangular conductors are adopted by the flat wire motor, and the stator slots are parallel slots, so that stator teeth are trapezoidal, the tooth width close to the slot opening is minimum, and the tooth width close to the slot bottom is maximum. When the motor works, a magnetic field enters the stator teeth from an air gap, and the magnetic field passing through the narrowest part of the stator teeth passes through the wider root part of the stator teeth, so that the magnetic density is reduced, the tooth width is excessive, and the utilization rate of the tooth part is reduced.
Chinese patent CN110808645a discloses a cooling structure applied to an oil-cooled flat wire motor stator, wherein oil holes are provided between outer diameter ends of two adjacent winding slots on a stator core. As shown in fig. 1 below, the above patent proposes that an oil hole is provided between the outer diameter ends of two adjacent winding slots, the oil hole is located on the center line of the stator tooth portion, and a certain area is occupied on the stator yoke portion, so that the trend of magnetic force lines is affected, the fluxion of a magnetic field is weakened, the output of motor torque is affected, and the torque of the motor is reduced.
Disclosure of Invention
Aiming at the defects in the prior art, the stator punching structure of the low-noise oil-cooled flat wire motor is provided, and the problems that the position of an oil through hole influences the flux of a magnetic field and the torque output of the motor are solved.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the utility model provides a stator towards piece structure of cold flat wire motor of low noise oil, includes stator towards piece body, and circumference equidistant has laid a plurality of stator tooth on stator towards piece body, is equipped with stator groove between two adjacent stator teeth, its characterized in that: and each stator tooth is provided with a pair of oil holes which are symmetrically distributed about the center line of the stator tooth.
According to the technical scheme, the oil through holes comprise a first edge adjacent to the other oil through hole, a second edge adjacent to the stator groove and a third edge positioned on an extension line of the bottom edge line of the stator groove, the first edges of the two adjacent oil through holes are arranged in parallel, and the second edge of the oil through hole is arranged in parallel with the outer edge line of the stator groove.
According to the technical scheme, the distance between the first sides of the two oil holes on the same stator tooth is equal to the minimum distance of the tooth top of the stator; the distance between the second edge of any oil through hole and the outer edge of the stator groove is L 2 The range of the catalyst is 0.5 mm-L 2 ≤1mm。
According to the technical scheme, the connection ends of the first edge, the second edge and the third edge are subjected to rounding treatment, and the rounding R is performed 1 R is more than or equal to 0.3mm 1 ≤0.5mm。
According to the technical scheme, a plurality of bosses are additionally arranged on two side lines of the stator teeth respectively, the bosses are symmetrically distributed on the center line of tooth parts, and the bosses are positioned between two adjacent flat wire windings.
According to the technical scheme, the radius of the boss is R 3 ，R 3 R is more than or equal to 0.3mm 3 ≤0.8mm。
According to the technical scheme, the radius of the first chamfer of the flat wire winding placed in the stator slot is R2, the radius of the second chamfer at the joint of the stator tooth and the boss is also R2, and the value range of R2 is not more than 0.3mm and not more than R 2 ≤0.8mm。
According to the technical scheme, the insulation slot paper is placed in the stator slot, the shape of the insulation slot paper adopts an S shape, and adjacent flat wire windings are all spaced apart.
The invention has the following beneficial effects:
1. the stator punching sheet is provided with the oil holes, the positions of the oil holes are positioned on two sides of the root part of the wider stator tooth (the part close to the center of the stator punching sheet is the top part of the stator tooth, and the part far away from the center of the stator punching sheet is the root part of the stator tooth), and the oil holes are not positioned on the center line of the stator tooth, so that the oil holes cannot influence the flux of a magnetic field and the torque output of a motor.
2. A pair of oil holes are arranged on the stator teeth, so that the width of the tooth root is the same as that of the tooth top, the problem of reduced magnetic density caused by excessive tooth width of the stator teeth is avoided, and the utilization rate of the stator teeth is improved.
2. According to the arrangement of the flat wire windings on the stator teeth, a plurality of bosses are added, the strength of the stator teeth is increased, the stress deformation of the teeth can be improved, and the vibration noise of the motor is improved. The utilization rate of the stator slot is improved, and the heat dissipation of the winding is facilitated.
3. S-shaped slot paper is placed in the stator slot, so that slot insulation between the flat wire conductor and the stator iron core, interlayer insulation and interphase insulation between the conductors are realized, and the safety performance of the motor is improved.
Drawings
FIG. 1 is a schematic diagram of a prior art structure;
FIG. 2 is a schematic view of a stator lamination in accordance with an embodiment of the present invention;
FIG. 3 is an enlarged view of the stator lamination structure of an embodiment of the present invention;
FIG. 4 is a detailed view of an oil passage hole according to an embodiment of the present invention;
FIG. 5 is a detail view of a tooth boss of an embodiment of the present invention;
in the figure, 1, a stator punching sheet body; 2. stator teeth; 3. a stator groove; 3-1, a first chamfer; 3-2, a second chamfer; 4. oil holes; 4-1, a first side; 4-2, a second side; 4-3, a third side; 5. a flat wire winding; 6. a boss; 7. insulation groove paper; A. a stator tooth centerline; B. the outer edge of the stator teeth.
Detailed Description
The invention will now be described in detail with reference to the drawings and examples.
Referring to fig. 1-2, the stator punching structure of the low-noise oil-cooled flat wire motor provided by the invention comprises a stator punching body 1, a plurality of stator teeth 2 are circumferentially and equally distributed on the stator punching body at equal intervals, and stator grooves 3 are arranged between two adjacent stator teeth. Each stator tooth is provided with a pair of oil through holes 4 which are symmetrically distributed about the center line A of the stator tooth. According to the embodiment, the arrangement mode of the oil holes is changed, so that the oil holes are not arranged on the central line of the stator teeth, the oil holes cannot influence the flux of a magnetic field, and the torque output of the motor cannot be influenced.
According to the technical scheme, the oil through holes comprise a first edge 4-1 adjacent to another oil through hole, a second edge 4-2 adjacent to the stator groove and a third edge 4-3 positioned on an extension line of the bottom edge of the stator groove, the first edges of two adjacent oil through holes are arranged in parallel, and the second edge of the oil through hole is arranged in parallel with the outer edge of the stator groove.
According to the technical scheme, the distance between the first sides of the two oil holes on the same stator tooth is equal to the minimum distance of the tooth top of the stator; the distance between the second edge of any oil through hole and the outer edge of the stator groove is L 2 The range of the catalyst is 0.5 mm-L 2 ≤1mm。
According to the technical scheme, the connection ends of the first edge, the second edge and the third edge are subjected to rounding treatment, and the rounding R is performed 1 R is more than or equal to 0.3mm 1 ≤0.5mm。
According to the technical scheme, a plurality of layers of flat wire windings 5 are placed in the stator slot, a plurality of bosses 6 are respectively additionally arranged on two side wires of the stator teeth, the center lines of tooth forming parts of the bosses are symmetrically distributed, and the bosses are positioned between the two connected flat wire windings 5.
According to the technical scheme, the radius of the boss is R 3 ，R 3 R is more than or equal to 0.3mm 3 ≤0.8mm。
According to the technical scheme, the radius of the first chamfer 3-1 of the flat wire winding 5 placed in the stator slot is R2, the radius of the second chamfer 3-2 at the joint of the stator tooth and the boss is also R2, and the value range of R2 is not more than 0.3mm and not more than R 2 ≤0.8mm。
According to the technical scheme, the insulating slot paper 7 is placed in the stator slot, the shape of the insulating slot paper adopts an S shape, and adjacent flat wire windings are all spaced.
The working principle of the invention is as follows:
1. the stator punching sheet is provided with the oil holes, the positions of the oil holes are positioned on two sides of the root part of the wider stator tooth (the part close to the center of the stator punching sheet is the top part of the stator tooth, and the part far away from the center of the stator punching sheet is the root part of the stator tooth), and the oil holes are not positioned on the center line of the stator tooth, so that the oil holes cannot influence the flux of a magnetic field and the torque output of a motor.
2. A pair of oil holes are arranged on the stator teeth, so that the width of the tooth root is the same as that of the tooth top, the problem of reduced magnetic density caused by excessive tooth width of the stator teeth is avoided, and the utilization rate of the stator teeth is improved.
2. According to the arrangement of the flat wire windings on the stator teeth, a plurality of bosses are added, the strength of the stator teeth is increased, the stress deformation of the teeth can be improved, and the vibration noise of the motor is improved. The utilization rate of the stator slot is improved, and the heat dissipation of the winding is facilitated.
3. S-shaped slot paper is placed in the stator slot, so that slot insulation between the flat wire conductor and the stator iron core, interlayer insulation and interphase insulation between the conductors are realized, and the safety performance of the motor is improved.
The foregoing is merely illustrative of the present invention and is not intended to limit the scope of the invention, which is defined by the claims and their equivalents.

Claims (5)

1. The utility model provides a stator towards piece structure of cold flat wire motor of low noise oil, includes stator towards piece body, and circumference equidistant has laid a plurality of stator tooth on stator towards piece body, is equipped with stator groove between two adjacent stator teeth, its characterized in that: each stator tooth is provided with a pair of oil holes which are symmetrically distributed about the center line of the stator tooth;
the oil holes comprise a first edge adjacent to the other oil hole, a second edge adjacent to the stator groove and a third edge positioned on an extension line of the bottom edge of the stator groove, the first edges of the two adjacent oil holes are arranged in parallel, and the second edge of the oil hole is arranged in parallel with the outer edge of the stator groove;
the distance between the first sides of the two oil holes on the same stator tooth is equal to the minimum distance of the tooth top of the stator; the distance between the second edge of any oil through hole and the outer edge of the stator groove is L 2 The range of the catalyst is 0.5 mm-L 2 ≤1mm；
The connection ends of the first side, the second side and the third side are rounded, and the round angle R is rounded 1 R is more than or equal to 0.3mm 1 ≤0.5mm。
2. The stator punching structure of a low noise oil cooled flat wire motor of claim 1, wherein: a plurality of bosses are respectively added on two side lines of the stator teeth, the bosses are symmetrically distributed on the center line of tooth parts, and the bosses are positioned between two adjacent flat wire windings.
3. The stator punching structure of a low noise oil-cooled flat wire motor of claim 2, wherein: the radius of the boss is R 3 ，R 3 R is more than or equal to 0.3mm 3 ≤0.8mm。
4. The stator punching structure of low-noise oil-cooled flat wire motor of claim 2The method is characterized in that: the radius of the first chamfer of the flat wire winding placed in the stator slot is R 2 The radius of the second chamfer at the joint of the stator teeth and the boss is also R 2 ，R 2 R is more than or equal to 0.3mm 2 ≤0.8mm。
5. The stator punching structure of a low noise oil-cooled flat wire motor of claim 2, wherein: and placing insulation slot paper in the stator slot, wherein the shape of the insulation slot paper adopts an S shape, and the adjacent flat wire windings are all spaced apart.
CN202210088434.6A 2022-01-25 2022-01-25 Stator punching structure of low-noise oil-cooled flat wire motor Active CN114374281B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210088434.6A CN114374281B (en) 2022-01-25 2022-01-25 Stator punching structure of low-noise oil-cooled flat wire motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210088434.6A CN114374281B (en) 2022-01-25 2022-01-25 Stator punching structure of low-noise oil-cooled flat wire motor

Publications (2)

Publication Number Publication Date
CN114374281A CN114374281A (en) 2022-04-19
CN114374281B true CN114374281B (en) 2023-08-29

Family

ID=81145785

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210088434.6A Active CN114374281B (en) 2022-01-25 2022-01-25 Stator punching structure of low-noise oil-cooled flat wire motor

Country Status (1)

Country Link
CN (1) CN114374281B (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103001354A (en) * 2012-10-29 2013-03-27 无锡金阳电机有限公司 Motor with magnetic rotor
CN207475301U (en) * 2016-08-17 2018-06-08 源捷公司 Electromotor cooling system
CN213402600U (en) * 2020-11-26 2021-06-08 长城汽车股份有限公司 Cooling structure of stator core and oil-cooled motor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103001354A (en) * 2012-10-29 2013-03-27 无锡金阳电机有限公司 Motor with magnetic rotor
CN207475301U (en) * 2016-08-17 2018-06-08 源捷公司 Electromotor cooling system
CN213402600U (en) * 2020-11-26 2021-06-08 长城汽车股份有限公司 Cooling structure of stator core and oil-cooled motor

Also Published As

Publication number Publication date
CN114374281A (en) 2022-04-19

Similar Documents

Publication Publication Date Title
WO2009084251A1 (en) Rotator for induction electric motor, induction electric motor, compressor, blower, and air-conditioning device
US20180226846A1 (en) Stacked iron core for armature, and armature
WO2023103668A1 (en) Stator, motor, compressor, and electrical device
EP3483905A1 (en) Choke
CN114374281B (en) Stator punching structure of low-noise oil-cooled flat wire motor
CN104578484B (en) Ventilation channel steel, manufacturing method thereof, ventilation structure and motor
WO2017092191A1 (en) Stator punching, stator assembly and external rotor motor
US20220149676A1 (en) Stator core assembly, and motor and vehicle having same
CN112186915A (en) Stator assembly
CN110417141B (en) Stator reaches motor including it
CN109888955B (en) High-power-density disc type motor winding structure and winding preparation method thereof
JP2590117Y2 (en) Motor stator
JP5244363B2 (en) Split stator and motor
CN114421659B (en) Stator and flat wire motor adapting to temperature zone distribution characteristics
JP7331748B2 (en) Rotating electric machine stator and segment coil manufacturing method
CN115296452A (en) Stator punching sheet structure of low-loss oil-cooled flat wire motor
CN107257169B (en) Tooth iron core blank, stator iron core and processing method of stator iron core
CN216904452U (en) Stator cooling structure and stator
CN220382825U (en) Stator core with inner and outer heat dissipation channels
CN116388420A (en) High-efficiency oil-cooled motor
CN219145118U (en) Motor stator core
CN220964417U (en) High-speed motor stator structure capable of enhancing heat dissipation of winding
CN220544755U (en) Round flat wire motor stator
CN219372125U (en) Spliced stator
CN219247548U (en) Stator punching sheet, stator core and motor

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant