CN116014924B - Stator punching sheet, stator assembly, electronic water pump and new energy automobile applying same - Google Patents
Stator punching sheet, stator assembly, electronic water pump and new energy automobile applying same Download PDFInfo
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- CN116014924B CN116014924B CN202310000317.4A CN202310000317A CN116014924B CN 116014924 B CN116014924 B CN 116014924B CN 202310000317 A CN202310000317 A CN 202310000317A CN 116014924 B CN116014924 B CN 116014924B
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- yoke
- stator
- center
- parts
- tooth
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- 238000004080 punching Methods 0.000 title claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 238000004804 winding Methods 0.000 claims abstract description 44
- 238000009966 trimming Methods 0.000 claims abstract description 23
- 238000010030 laminating Methods 0.000 claims description 3
- 229910000976 Electrical steel Inorganic materials 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Classifications
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- 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 invention relates to a stator punching sheet, a stator assembly, an electronic water pump and a new energy automobile using the same, which comprises a tooth part, a yoke part and a boot part, wherein the yoke part is of an annular structure, the tooth part is arranged on the yoke part by taking the center of the yoke part as the center of a circle, the boot part is arranged on two sides of the end part of the tooth part, each two adjacent tooth parts and the similar boot part and yoke part surround to form a winding groove, the outer side of the yoke part is provided with an outer circular trimming edge, the outer surfaces of the four outer circular trimming edges are equidistantly arranged along the outer surface of the yoke part, the winding groove aligned with the outer circular trimming edge is provided with an inner circular straight edge, and the inner circular straight edge is parallel to the outer circular trimming edge. Through set up excircle side cut and interior circle straight flange on stator punching, can effectively make stator punching high punching blanking arrange compacter and reasonable when guaranteeing motor electromagnetic properties, effectively reduce silicon steel sheet material width and step, promote material utilization and reduce part product cost, electronic water pump has advantages such as small in size weight, and the motor energy efficiency is high, and stator core is with low costs, promotes the market competition of product.
Description
Technical Field
The invention relates to the technical field of electronic water pumps, in particular to a stator punching sheet, a stator assembly, an electronic water pump and a new energy automobile using the same.
Background
Along with the increasing requirements of new energy automobiles on endurance mileage, manufacturers of the whole automobiles require that the electronic cooling water pump of key components thereof have the characteristics of small volume, low weight, high power density, low cost and the like. In the related art, the electronic water pump has the disadvantages of large volume, heavy weight, low efficiency, high cost and the like, is difficult to meet the requirements of users on the electronic water pump products, and has a large improvement space.
Because the phenomenon that the magnetic Lewis saturation is easy to occur on the tooth part and the yoke part of the motor stator, the iron loss and copper loss of the motor are unreasonable to be distributed, the performance of the motor is affected, and the working efficiency of the motor is reduced. In the prior art in the electronic water pump industry, the stator core mainly has the following two problems: (1) In order to avoid magnetic circuit saturation of the tooth part and the yoke part stator core, the tooth part width and the yoke part width are directly widened, so that the slot area is reduced, the winding process difficulty is increased, and the weight of the stator core is increased; (2) The stator core is of a full-circle structure, is unfavorable for arrangement of high-impact blanking, and has the advantages of large material width, large step pitch, low material interest rate and high part cost.
Disclosure of Invention
The invention mainly aims to provide a stator punching sheet, a stator assembly, an electronic water pump and a new energy automobile using the same, so as to solve the technical problems, and the stator punching sheet is small in size, light in weight and high in motor energy efficiency.
In order to achieve the above purpose, the invention adopts the following technical scheme:
The utility model provides a stator punching, includes tooth portion, yoke portion and boots portion, the yoke portion is cyclic annular structure, the tooth portion with the centre of a circle of yoke portion is as centre of a circle array set up in on the yoke portion, boots portion set up in the both sides of tooth portion tip, every two adjacent tooth portions and similar boots portion and yoke portion are around forming the wire winding groove, the quantity of wire winding groove is 3 x 2N (N is the integer), the outside of yoke portion is provided with the excircle and cuts the edge, four excircle cut the edge the surface equidistance of yoke portion set up, with be provided with interior circle straight flange on the wire winding groove that the excircle cuts the edge alignment, interior circle straight flange with the excircle cut edge that the wire winding groove center aligns is parallel to above-mentioned structure satisfies following relational expression:
Wherein R1 is the radius of the outer circle of the yoke, R2 is the radius of the inner circle of the yoke, L1 is the distance between the edge cutting of the outer circle and the center of the yoke, and L2 is the distance between the straight edge of the inner circle and the center of the yoke.
As a preferable technical scheme, when the number of the winding grooves is 3×2n/4, the four outer circle trimming edges are aligned with the center of the winding groove.
As a preferred technical solution, when the number of winding slots is 3×2n/4, which is not an integer, two of the outer circumferential cutting edges are aligned with the winding slot center, and the other two outer circumferential cutting edges are aligned with the tooth center.
As another aspect of the present invention, a stator assembly includes a stator core, a bobbin, a winding, a three-phase terminal, and a ground terminal, wherein the stator core is formed by laminating a plurality of stator punching sheets, the bobbin is mounted at two ends of the stator core, the winding is wound on the bobbin, the three-phase terminal is mounted on the bobbin, and the ground terminal is connected with the stator core through the bobbin.
As a preferable technical solution, the yoke portion is provided with a positioning groove, the positioning groove is disposed on an outer surface of the yoke portion and aligned with the tooth portion center, and the positioning groove satisfies the following relation:
When (when) When R1-L3 > L3-R2;
When (when) When R1-L3 is less than L3-R2;
Wherein B2 is the width of the positioning groove; b1 is the width of the tooth part, and B1 is less than or equal to 4mm; l3 is the distance between the bottom of the positioning groove and the center of the yoke, and L3 is more than or equal to 25mm.
As a preferable embodiment, a connection portion is provided at an end portion of the ground terminal, and the connection portion abuts against the positioning groove.
As a preferable technical scheme, the two sides of the connecting part are provided with saw tooth structures, the maximum width of the connecting part is B3, and B3 is more than B2.
As another scheme of the invention, the electronic water pump comprises the stator assembly, a pump cover, a stator housing, an impeller assembly, an electric control plate assembly and a rear end cover, wherein the stator assembly is arranged in the stator housing, the impeller assembly penetrates through the stator assembly, the electric control plate assembly is electrically connected with the stator assembly, and the pump cover and the rear end cover are arranged at two ends of the stator housing.
As still another aspect of the present invention, a new energy automobile, to which the above-described electronic water pump is applied.
The invention has the beneficial effects that: above-mentioned stator punching, stator subassembly, electronic water pump and use its new energy automobile, through set up excircle side cut and interior round straight flange on the stator punching, can effectively make stator punching high punching blanking arrange compacter and reasonable in the time of guaranteeing motor electromagnetic properties, effectively reduce silicon steel sheet material width and stride, promote material utilization and reduce the part product cost, connecting portion and constant head tank adopt interference fit to install, can effectively guarantee stator subassembly's ground connection reliability, can effectively reduce the risk of switching on badly, electronic water pump has small in size weight, the motor energy efficiency is high, stator core advantage such as with low costs, can fully satisfy market customer demand, promote the market competitiveness of product.
Drawings
Fig. 1 is a schematic diagram of high-punching blanking arrangement of stator punching sheets on silicon steel sheets when a stator core is in a full-circle structure;
FIG. 2 is a schematic view of a stator lamination according to the present invention;
FIG. 3 is a schematic diagram of the arrangement of stator punching sheets in high-punching blanking of silicon steel sheets;
FIG. 4 is a schematic structural view of a stator assembly according to the present invention;
FIG. 5 is a side view of a stator assembly in accordance with the present invention;
FIG. 6 is an enlarged view of a portion of FIG. 5 at a;
fig. 7 is a schematic structural view of a ground terminal according to the present invention;
FIG. 8 is an exploded view of an electronic water pump according to the present invention;
Fig. 9 is a schematic diagram showing the result of performing magnetic density (magnetic saturation) performance analysis of the electronic water pump according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 2, a stator punching sheet 10 includes a tooth 2, a yoke 1 and a shoe 3, the yoke 1 is in an annular structure, the tooth 2 is fixedly arranged on the yoke 1 by using the center of the yoke 1 as a center array, the shoe 3 is arranged on two sides of the end of the tooth 2, all the shoes 3 are connected to form a circle, each two adjacent teeth 2 and the adjacent shoe 3 and the yoke 1 are jointly surrounded to form a winding slot 4, the number of the winding slots 4 is 3 x 2N (N is an integer), the outer side of the yoke 1 is provided with an outer circle trimming 5, the outer circle trimming 5 is provided with four outer circle trimming 5, the four outer circle trimming 5 are equidistantly arranged along the outer surface of the yoke 1, the winding slots 4 aligned with the outer circle trimming 5 are provided with an inner circle 6, the inner circle trimming 6 is parallel to the outer circle trimming 5 aligned with the center of the winding slots 4, and the outer circle trimming 5 has two setting modes as a preferred technical scheme of the invention: when the number of the winding grooves 4 is 3 x 2N/4, the four outer circle trimming edges 5 are aligned with the center of the winding grooves 4; when the number of the winding slots 4 is 3×2n/4, two of the outer circumferential cut edges 5 are aligned with the center of the winding slot 4, the other two outer circumferential cut edges 5 are aligned with the center of the tooth portion 2, and the outer circumferential cut edges 5 and the inner circumferential straight edges 6 satisfy the following relationship:
wherein R1 is the radius of the outer circle of the yoke part 1, R2 is the radius of the inner circle of the yoke part 1, L1 is the distance between the outer circle trimming 5 and the center of the yoke part 1, and L2 is the distance between the inner circle straight edge 6 and the center of the yoke part 1.
As shown in fig. 3, when the outer circular edge 5 and the inner circular edge 6 meet the above relation, the electromagnetic performance efficiency of the motor can be ensured, by setting the outer circular edge 5, the stator punching sheet 10 is more compact and reasonable in high-punching blanking arrangement of the silicon steel sheet, the width and the step pitch of the silicon steel sheet are effectively reduced by more than 5%, the material utilization rate of the silicon steel is improved by more than 4%, the product cost of parts is reduced, the inner circular edge 6 and the outer circular edge 5 are correspondingly set, the magnetic circuit area lost by the outer circular edge 5 can be compensated, the saturation of a magnetic circuit is avoided, and the electromagnetic performance of the motor is ensured.
Referring to fig. 4 and 5, a stator assembly 100 includes a stator core 60, a winding frame 20, windings 30, three-phase terminals 40 and a grounding terminal 50, wherein the stator core 60 is formed by laminating a plurality of stator punching sheets 10, the winding frame 20 is mounted at two ends of the stator core 60, the windings 30 are wound on the winding frame 20 and pass through the winding grooves 4, the three-phase terminals 40 are provided with three, the three-phase terminals 40 are mounted on the winding frame 20, and the grounding terminal 50 passes through the winding frame 20 and is connected with the stator core 60.
As shown in fig. 2,4 and 5, the yoke 1 is provided with a positioning groove 7, the positioning groove 7 is disposed on the outer surface of the yoke 1 and aligned with the center of the tooth 2, as a preferred scheme in this embodiment, the positioning groove 7 is not disposed on the outer circumferential edge 5, i.e. the positioning groove 7 is disposed on the outer surface of the yoke 1 outside the center of the tooth 2 without the outer circumferential edge 5, and the positioning groove 7 satisfies the following relationship:
When (when) When R1-L3 > L3-R2;
When (when) When R1-L3 is less than L3-R2;
Wherein B2 is the width of the positioning groove 7; b1 is the width of the tooth part 2, and B1 is less than or equal to 4mm; l3 is the distance between the bottom of the positioning groove 7 and the center of the yoke part 1, and L3 is more than or equal to 25mm.
When the positioning slot 7 satisfies the above relation, it can be ensured that the stator core 60 can be provided with the bobbin 20 and the grounding terminal 50, that is, the bobbin 20 and the grounding terminal 50 are mounted on the stator core 60 through the positioning slot 7, and if the setting parameters of the positioning slot 7 do not satisfy the above relation, the positioning slot 7 can cause local magnetic circuit saturation, increase iron loss and copper loss, and reduce the electromagnetic performance of the motor.
As shown in fig. 6 and 7, the end of the grounding terminal 50 is provided with a connecting portion 51, the connecting portion is abutted to the positioning groove 7, saw tooth structures 52 are disposed on two sides of the connecting portion 51, the maximum width of the connecting portion 51 is B3, and B3 is greater than B2, that is, the connecting portion 51 and the positioning groove 7 are mounted by interference fit, so that the reliability of grounding conduction of the stator assembly 100 can be effectively ensured, and the risk of poor conduction can be effectively reduced.
As shown in fig. 8, an electronic water pump includes a stator assembly 100, a pump cover 400, a stator housing 300, an impeller assembly 200, an electric control plate assembly 500 and a rear end cover 600, wherein the stator assembly 100 is installed in the stator housing 300, the impeller assembly 200 is inserted into the stator assembly 100, the electric control plate assembly 500 is electrically connected with the stator assembly 100, and the pump cover 400 and the rear end cover 600 are installed at two ends of the stator housing 300. The electronic water pump has the advantages of small volume and weight, high motor energy efficiency, low cost of the stator core 60 and the like, can fully meet the demands of market clients, and improves the market competitiveness of products.
The electromagnetic simulation test is performed on the electronic water pump, the test result is shown in fig. 9, a plurality of test points are selected from the test result, and the test result is shown in the following table 1, and it can be seen that the maximum magnetic density (magnetic saturation) is 1.37T and not more than 1.5T, so that it can be seen that after the stator punching sheet 10 is subjected to the excircle trimming, slotting and stator tooth width reduction, the phenomenon of magnetic circuit saturation does not occur in the stator punching sheet 10, and the motor performance is improved to a certain extent.
TABLE 1 magnetic density (magnetic saturation) Performance analysis results values
The embodiment also provides a new energy automobile, which is applied with the electronic water pump.
Through this electronic water pump, provide the power supply for the whole cooling system of new energy automobile, make power battery, the driving motor etc. of new energy automobile generate heat the part and can drive the coolant liquid through electronic water pump and carry out the circulative cooling. The new energy automobile has the advantages of small volume, high motor efficiency, low cost of the stator core and the like, and can effectively cool heating components such as a power battery, a driving motor and the like.
The above embodiments are only preferred examples of the present invention and are not intended to limit the scope of the present invention, so that all equivalent changes or modifications of the structure, characteristics and principles described in the claims are included in the scope of the present invention.
Claims (5)
1. The stator assembly is characterized by comprising a stator core, a winding frame, windings, three-phase terminals and grounding terminals, wherein the stator core is formed by laminating a plurality of stator punching sheets, the winding frame is arranged at two ends of the stator core, the windings are wound on the winding frame, the three-phase terminals are arranged on the winding frame, and the grounding terminals penetrate through the winding frame and are connected with the stator core;
The stator punching sheet comprises tooth parts, yoke parts and shoe parts, wherein the yoke parts are of annular structures, the tooth parts are arranged on the yoke parts by taking the circle center of the yoke parts as a circle center array, the shoe parts are arranged on two sides of the end parts of the tooth parts, every two adjacent tooth parts and the similar shoe parts and yoke parts surround to form a winding groove, the number of the winding grooves is 3 x 2N (N is an integer), the outer sides of the yoke parts are provided with outer circle trimming edges, four outer circle trimming edges are arranged on the outer surfaces of the yoke parts at equal intervals, inner circle straight edges are arranged on the winding grooves aligned with the outer circle trimming edges, the inner circle straight edges are parallel to the outer circle trimming edges aligned with the center of the winding groove, and the structure meets the following relational expression:
wherein R1 is the radius of the outer circle of the yoke, R2 is the radius of the inner circle of the yoke, L1 is the distance between the edge cutting of the outer circle and the center of the yoke, and L2 is the distance between the straight edge of the inner circle and the center of the yoke;
when the number of the winding grooves is 3 x 2N/4, the four outer circle trimming edges are aligned with the center of the winding grooves; when the number of the winding grooves is 3 x 2N/4 and is not an integer, two outer circle trimming edges are aligned with the center of the winding grooves, and the other two outer circle trimming edges are aligned with the center of the tooth part;
The yoke is provided with a positioning groove, the positioning groove is arranged on the outer surface of the yoke and aligned with the center of the tooth part, and the positioning groove meets the following relation:
When (when) When R1-L3 > L3-R2;
When (when) When R1-L3 is less than L3-R2;
Wherein B2 is the width of the positioning groove; b1 is the width of the tooth part, and B1 is less than or equal to 4mm; l3 is the distance between the bottom of the positioning groove and the center of the yoke, and L3 is more than or equal to 25mm.
2. The stator assembly according to claim 1, wherein an end of the ground terminal is provided with a connection portion that abuts the positioning groove.
3. The stator assembly according to claim 2, wherein the connection portion is provided with a saw tooth structure on both sides, the connection portion has a maximum width B3, and B3 > B2.
4. An electronic water pump, comprising the stator assembly, a pump cover, a stator housing, an impeller assembly, an electric control plate assembly and a rear end cover according to claim 3, wherein the stator assembly is installed in the stator housing, the impeller assembly penetrates through the stator assembly, the electric control plate assembly is electrically connected with the stator assembly, and the pump cover and the rear end cover are installed at two ends of the stator housing.
5. A new energy automobile, characterized in that the electronic water pump of claim 4 is applied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310000317.4A CN116014924B (en) | 2023-01-02 | 2023-01-02 | Stator punching sheet, stator assembly, electronic water pump and new energy automobile applying same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310000317.4A CN116014924B (en) | 2023-01-02 | 2023-01-02 | Stator punching sheet, stator assembly, electronic water pump and new energy automobile applying same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116014924A CN116014924A (en) | 2023-04-25 |
| CN116014924B true CN116014924B (en) | 2024-06-11 |
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ID=86028167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310000317.4A Active CN116014924B (en) | 2023-01-02 | 2023-01-02 | Stator punching sheet, stator assembly, electronic water pump and new energy automobile applying same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116014924B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004336997A (en) * | 2004-08-30 | 2004-11-25 | Matsushita Ecology Systems Co Ltd | Stator of inner revolution type dynamo-electric motor |
| JP2005287288A (en) * | 2004-03-03 | 2005-10-13 | Mikuni Corp | Stepping motor |
| JP2006158174A (en) * | 2004-10-29 | 2006-06-15 | Hitachi Ltd | Rotary electric machine and manufacturing method thereof |
| CN210122954U (en) * | 2018-12-29 | 2020-03-03 | 赛默（厦门）智能科技有限公司 | Novel automobile electronic water pump |
| CN115136453A (en) * | 2020-02-26 | 2022-09-30 | 阿莫泰克有限公司 | Axial gap type motor and water pump using same |
-
2023
- 2023-01-02 CN CN202310000317.4A patent/CN116014924B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005287288A (en) * | 2004-03-03 | 2005-10-13 | Mikuni Corp | Stepping motor |
| JP2004336997A (en) * | 2004-08-30 | 2004-11-25 | Matsushita Ecology Systems Co Ltd | Stator of inner revolution type dynamo-electric motor |
| JP2006158174A (en) * | 2004-10-29 | 2006-06-15 | Hitachi Ltd | Rotary electric machine and manufacturing method thereof |
| CN210122954U (en) * | 2018-12-29 | 2020-03-03 | 赛默（厦门）智能科技有限公司 | Novel automobile electronic water pump |
| CN115136453A (en) * | 2020-02-26 | 2022-09-30 | 阿莫泰克有限公司 | Axial gap type motor and water pump using same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116014924A (en) | 2023-04-25 |
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