CN210693580U - Stator core punching sheet, stator assembly and electronic pump - Google Patents
Stator core punching sheet, stator assembly and electronic pump Download PDFInfo
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- CN210693580U CN210693580U CN201921870255.8U CN201921870255U CN210693580U CN 210693580 U CN210693580 U CN 210693580U CN 201921870255 U CN201921870255 U CN 201921870255U CN 210693580 U CN210693580 U CN 210693580U
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- 238000004080 punching Methods 0.000 title claims abstract description 14
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 36
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 14
- 238000003780 insertion Methods 0.000 abstract description 8
- 230000037431 insertion Effects 0.000 abstract description 8
- 238000012545 processing Methods 0.000 abstract description 8
- 230000001788 irregular Effects 0.000 abstract description 6
- 229910052742 iron Inorganic materials 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 238000009413 insulation Methods 0.000 description 6
- 238000004804 winding Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000001012 protector Effects 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of electronic pumps, and discloses a stator core punching sheet, a stator assembly and an electronic pump, wherein the stator core punching sheet is provided with a plurality of first stator teeth, and the tooth top of each first stator tooth is constructed with an arc area and a plane area; the stator assembly comprises a stator core formed by stator core punching sheets, slot-shaped insulating paper, an upper insulating framework, a lower insulating framework, a platinum resistance sensor, a wiring insertion sheet, a stator coil and the like; the electronic pump includes the stator assembly. The tooth top of the first stator tooth of the stator core punching sheet is provided with the plane area and the circular arc area to form an irregular shape, so that the process difficulty and the processing time are reduced; when the rotor rotates, a motor air gap with unequal gaps is formed between the rotor and the irregular shape formed by the plane of the tooth top and the arc surface, so that the sine degree of the air gap magnetic field of the built-in permanent magnet motor is greatly improved, the harmonic content of the air gap magnetic field is reduced, the iron loss is reduced, the efficiency is improved, and the vibration noise is reduced.
Description
Technical Field
The utility model relates to an electronic pump technical field especially relates to a stator core is towards piece, stator module and electronic pump.
Background
In recent years, with the rapid development of new energy automobiles, a shielding type electronic pump is widely applied to a vehicle thermal management system due to the characteristics of safety, reliability, no leakage and the like. The permanent magnet synchronous motor is widely applied to an electronic pump of a heat management system of a new energy automobile, factors influencing the permanent magnet performance of the motor are many, but how to improve the sine degree of an air gap field of the motor is often an important consideration factor of a designer.
In the existing permanent magnet motor for the electronic pump, a rotor is often in a sine magnetizing magnetic ring structure or a built-in magnetic pole structure. Although the sine degree of the air gap magnetic field is good, the anti-demagnetization capability of the magnetic ring structure is poor. An internal permanent magnet motor (IPM for short) is generally designed to sine an air gap field on the outer circle side of a rotor, but for the internal permanent magnet motor for an electronic pump, due to the existence of a rotor shielding sleeve, special-shaped processing is not easy to be performed on the outer circle of the rotor, so that the air gap field with good sine degree is difficult to obtain, the harmonic content of the motor field is increased, the iron loss of the motor is increased, and the vibration noise is increased.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The embodiment of the utility model provides a stator core is towards piece, stator module and electronic pump to solve built-in permanent-magnet machine among the prior art because difficult air gap magnetic field sine relatively poor technical problem who leads to carrying out special-shaped processing to the rotor excircle.
(II) technical scheme
In order to solve the technical problem, the embodiment of the utility model provides a stator core is towards piece, stator core is equipped with a plurality of first stator teeth towards piece, every the tooth top structure of first stator tooth has circular arc district and plane district.
The tooth top of each first stator tooth is provided with an arc area and two plane areas, and the plane areas are respectively arranged at two end parts of the arc area.
The included angle between the plane area and the first stator tooth central line is 80-90 degrees, and the included angle between the end part of the circular arc area and the first stator tooth central line is 4-6 degrees.
The embodiment of the utility model provides a still disclose a stator module, including cell type insulated paper and a plurality of superpose together if the utility model discloses a stator core towards the stator core that the piece formed, it is adjacent be constructed with the iron core through-hole that is used for placing stator coil between the first stator tooth, cell type insulated paper place in the iron core through-hole with between the stator coil.
And the top and the bottom of the groove-shaped insulating paper are provided with flanging structures, and the flanging structures are correspondingly arranged on the upper end surface and the lower end surface of the first stator tooth respectively.
The stator core punching sheet comprises an upper insulating framework, a lower insulating framework, a first clamping column, a second clamping column, an upper positioning hole, a lower positioning hole, a first clamping column and a second clamping column.
The platinum resistance sensor is characterized by further comprising a platinum resistance sensor, the upper insulation framework and the lower insulation framework are respectively provided with a plurality of second stator teeth, and the second stator teeth of the upper insulation framework are provided with grooves for fixing the platinum resistance sensor.
And the groove of the second stator tooth of the upper insulating framework is internally provided with a clamping part protruding inwards.
The upper surface of the upper insulation framework is also provided with a plug sheet groove for fixing a wiring plug sheet, and the plug sheet groove comprises a three-phase outgoing plug sheet groove and a sensor outgoing plug sheet groove.
The embodiment of the utility model provides a still disclose an electronic pump, include the novel stator module of real usefulness.
(III) advantageous effects
The embodiment of the utility model provides a stator core towards piece, stator module and electronic pump, the tooth top of the first stator tooth of stator core towards piece is constructed and is had plane area and circular arc district and form irregular shape, carries out flat tooth and circular arc tooth processing to the stator tooth when stator core towards piece processing, need not carry out special-shaped treatment to the excircle of rotor, has reduced the technology degree of difficulty and process time; when the rotor rotates, a motor air gap with unequal gaps is formed between the rotor and the irregular shape formed by the plane of the tooth top and the arc surface, so that the sine degree of the air gap magnetic field of the built-in permanent magnet motor is greatly improved, the harmonic content of the air gap magnetic field is reduced, the iron loss is reduced, the efficiency is improved, and the vibration noise is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a stator core punching sheet according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a stator assembly according to an embodiment of the present invention;
fig. 3 is an exploded view of a stator assembly according to an embodiment of the present invention;
fig. 4 is a schematic structural view of an upper insulating framework according to an embodiment of the present invention;
fig. 5 is a schematic structural view of the lower insulating frame according to the embodiment of the present invention;
fig. 6 is a schematic structural view of a second stator tooth according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a slot-type insulation paper according to an embodiment of the present invention.
Reference numerals:
1: a wiring plug-in sheet; 11: inserting a three-phase outgoing line; 12: inserting pieces of sensor outgoing lines; 2: a platinum resistance sensor; 3: a stator coil; 4: an upper insulating framework; 41: a groove; 42: a fastening part; 43: a three-phase outgoing wire inserting groove; 44: a sensor outgoing line inserting sheet groove; 45: an insulating skeleton hole; 46: a second clamping column; 47. a first clamp post; 48. a second stator tooth; 5: groove-shaped insulating paper; 51. a flanging structure; 6: a stator core; 60: punching a stator core; 61: self-buckling points; 62: an iron core through hole; 63: a first stator tooth; 631: a planar area; 632: a circular arc region; 64: an upper positioning hole; 7: a lower insulating skeleton; y1: an auxiliary line; y2: dividing the middle line; y3: auxiliary circle
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, the embodiment of the present invention discloses a stator core punching sheet, the stator core punching sheet 60 is provided with a plurality of first stator teeth 63, and the tooth top of each first stator tooth 63 is configured with an arc area 632 and a plane area 631.
The embodiment of the utility model provides an in need not carry out special-shaped processing to the structure of rotor excircle, and change the stator tooth structure of stator to form the motor air gap in clearance that varies.
Specifically, since the outer circle of the rotor is a regular circle and the rotation track thereof is a concentric track with the auxiliary circle Y3 in fig. 1, the rotor of the present embodiment will generate different separation distances when rotating through the arc area 632 and the plane area 631, thereby generating the motor air gap with unequal gaps.
The tooth top of the first stator tooth 63 of this embodiment is formed by connecting a plurality of plane areas 631 and arc areas 632, the plane areas 631 and the arc areas 632 may have a plurality of arrangements and connection manners, and the plane areas 631 and the arc areas 632 are staggered to form an example, which includes: 1) the tooth top center area is an arc area 632, the tooth top end is a plane area 631, a plurality of arc areas 632 and/or plane areas 631 can be arranged between the tooth top center area and the end, and the number of the arc areas 632 and/or the plane areas 631 is determined according to the crossing angle of the arc areas 632, the length of the plane areas 631 and the number of the first stator teeth 63; 2) the tooth top center area is a plane area 631, the tooth top end is an arc area 632, a plurality of arc areas 632 and/or plane areas 631 can be arranged between the tooth top center area and the end, and the number of the circular areas 632 and/or the plane areas 631 is determined according to the crossing angle of the arc areas 632, the length of the plane areas 631 and the number of the first stator teeth 63.
The embodiment of the utility model provides a stator core towards piece, stator module and electronic pump, the tooth top of the first stator tooth of stator core towards piece is constructed and is had plane area and circular arc district and form irregular shape, carries out flat tooth and circular arc tooth processing to the stator tooth when stator core towards piece processing, need not carry out special-shaped treatment to the excircle of rotor, has reduced the technology degree of difficulty and process time; when the rotor rotates, a motor air gap with unequal gaps is formed between the rotor and the irregular shape formed by the plane of the tooth top and the arc surface, so that the sine degree of the air gap magnetic field of the built-in permanent magnet motor is greatly improved, the harmonic content of the air gap magnetic field is reduced, the iron loss is reduced, the efficiency is improved, and the vibration noise is reduced.
As shown in fig. 1, the tooth top of each first stator tooth 63 is configured with an arc area 632 and two plane areas 631, and the plane areas 631 are respectively disposed at two ends of the arc area 632. The arc area 632 of this embodiment is located at the center of the tooth top, and the plane area 631 is connected to the two sides of the arc area 632, i.e., the ends of the tooth top. Y3 in fig. 1 is an auxiliary circle formed by all the circular arc areas 632 of the first stator teeth 63, and the rotation locus of the rotor is a concentric circle with Y3, which forms an unequal gap motor air gap when rotating to the plane area 631 and the circular arc area 632. The planar areas 631 at both ends are disposed at an angle perpendicular to the normal of the edge portion of the circular arc area 632 connected thereto in this embodiment.
Further, the plane area 631 forms an angle of 80-90 ° with the bisector Y2 of the first stator tooth 63, and the end of the circular arc area 632 (i.e., the auxiliary line Y1) forms an angle of 4-6 ° with the bisector Y2 of the first stator tooth 63 (i.e., α).
As shown in fig. 2 and fig. 3, the embodiment of the present invention also discloses a stator assembly, which includes a slot-type insulating paper 5 and a plurality of stator cores 6 stacked together as the embodiment of the present invention, a core through hole 62 for placing a stator coil is configured between adjacent first stator teeth 63, and the slot-type insulating paper 5 is placed between the core through hole 62 and the stator coil 3. In this embodiment, a plurality of stator core punching sheets 60 are stacked via a plurality of self-fastening points 61 to form the stator core 6. In the embodiment, the insulating paper is used for replacing an insulating framework in the prior art, the thickness of the insulating paper is 0.25-0.4 mm and is less than half of that of the insulating framework, and the distance between the stator coil 3 and the stator core 6 is reduced, so that the thermal resistance between the stator coil 3 and the stator core 6 is reduced, the heat dissipation capacity of the motor is further improved, and the temperature rise of a motor winding is reduced.
As shown in fig. 7, the top and bottom of the slot type insulation paper 5 are configured with flanging structures 51, and the flanging structures 51 are respectively and correspondingly arranged on the upper end surface and the lower end surface of the first stator tooth 63. In this embodiment, the height of the flanging structure 51 of the slot-type insulating paper 5 is 2 mm to 3 mm, the slot-type insulating paper 5 is extruded to pass through the iron core through hole 62, the flanging structure 51 at the top is tightly lapped on the upper end face of the first stator teeth 63, the flanging structure 51 at the bottom is tightly lapped on the lower end face of the first stator teeth 63, and the slot-type insulating paper is clamped inside the iron core through hole 62, so that the slot-type insulating paper 5 is more tightly attached to the stator iron core 6, and the slot-type insulating paper is not easy to fall off and is convenient for production and management.
As shown in fig. 3 to 5, the stator further includes an upper insulating frame 4 and a lower insulating frame 7, a first locking column 47 is disposed at the bottom of the upper insulating frame 4, a second locking column 46 is disposed at the top of the lower insulating frame 7, an upper positioning hole 64 is disposed at the top of the stator core 6, a lower positioning hole (not shown) is disposed at the bottom of the stator core, the first locking column 47 is connected to the upper positioning hole 64 in a matching manner, and the lower insulating frame 7 is connected to the lower positioning hole 64 in a matching manner through the second locking column 46. In this embodiment, the first locking column 46 and the second locking column 47 are both non-uniformly distributed and respectively located with the upper locating hole 64 on the upper surface of the stator core 6 and the lower locating hole on the lower surface of the stator core 6, so as to realize foolproof locating press-fitting among the upper insulating framework 4, the stator core 6 and the lower insulating framework 7.
As shown in fig. 6, the platinum resistance sensor 2 is further included, the upper insulating framework 4 and the lower insulating framework 7 are both provided with a plurality of second stator teeth 48, and the second stator teeth 48 of the upper insulating framework 4 are provided with grooves 41 for fixing the platinum resistance sensor 2. The second stator tooth 48 is similar in shape to the first stator tooth 63, and also has a circular arc region and a flat region. Specifically, the insulating frame hole 45 configured by the adjacent second stator teeth 48 in the present embodiment is slightly larger than the core through hole 62, so that the slot type insulating paper 5 can be smoothly inserted into the core through hole 62. Preferably, a buckling part 42 protruding inwards is arranged in the groove 41 of the second stator tooth 48 of the upper insulating framework 4, and the platinum resistance sensor 2 is fixed in the groove 41 through the buckling part 42, so that the fixing is firmer and the platinum resistance sensor 2 is prevented from falling off in the winding process. In the embodiment, the outer diameter of the probe head of the platinum resistance sensor 2 is 2-3 mm, the length of the probe head is 10-15 mm, the width of the groove 41 of the second stator tooth 48 is 2.5-3.5 mm, the depth of the groove is 1.7-2.7 mm, and the length of the groove is 13-18 mm, the platinum resistance sensor 2 is small in size and easy to be embedded into the groove 41, and the probe head of the platinum resistance sensor 2 can be slightly higher than the tooth surface of the upper insulating framework 4, so that the platinum resistance sensor 2 and the stator coil 3 can be in close contact after the stator is wound. In the prior art, the temperature protection mode of a stator winding is usually a temperature protector or a protection mode of a motor driver is relied on to achieve the aim of indirect protection; the protection mode of the temperature protector is fuse protection, the pump is powered off and stops running, so that the thermal management system cannot work normally, and in addition, the defects exist in timeliness and stability through an indirect protection mode of the driver. Adopt platinum resistance sensor 2 in this embodiment, come indirect measurement temperature to replace the temperature protector and the motor drive's among the prior art temperature protection mode through measuring its resistance, the staff can know stator winding's real-time temperature through the mode of observing platinum resistance sensor 2, 2 detecting heads of platinum resistance sensor in this embodiment and stator coil 3 contact, temperature feedback is more real-time accurate, is convenient for realize the automatic wire winding of the centralized winding of stator, improves production efficiency.
The upper surface of the upper insulating framework 4 is also provided with a plug sheet groove for fixing the wiring plug sheet 1, and the plug sheet groove comprises a three-phase outgoing plug sheet groove 43 and a sensor outgoing plug sheet groove 44. Specifically, since the wiring insertion tab 1 includes the three-phase lead-out wire insertion tab 11 and the sensor lead-out wire insertion tab 12, a three-phase lead-out wire insertion tab slot 43 for inserting the three-phase lead-out wire insertion tab 11 and a sensor lead-out wire insertion tab slot 44 for inserting the sensor lead-out wire insertion tab 12 are correspondingly provided.
The embodiment of the utility model provides a still disclose an electronic pump, include if the utility model discloses a stator module.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The stator core stamped sheet is characterized in that the stator core stamped sheet is provided with a plurality of first stator teeth, and the tooth tops of the first stator teeth are provided with an arc area and a plane area.
2. The stator core punching sheet according to claim 1, wherein each tooth top of the first stator tooth is configured with an arc area and two plane areas, and the plane areas are respectively arranged at two ends of the arc area.
3. The stator core punching sheet according to claim 2, wherein an included angle of 80-90 degrees is formed between the plane area and the first stator tooth central line, and an included angle of 4-6 degrees is formed between the end part of the circular arc area and the first stator tooth central line.
4. A stator assembly, characterized by comprising a stator core formed by stacking a plurality of stator core stamped sheets according to any one of claims 1 to 3 together with slot-type insulating paper, wherein core through holes for placing stator coils are formed between adjacent first stator teeth, and the slot-type insulating paper is placed between the core through holes and the stator coils.
5. The stator assembly according to claim 4, characterized in that the slot-type insulating paper is configured with flanging structures at the top and the bottom, and the flanging structures are respectively and correspondingly arranged on the upper end surface and the lower end surface of the first stator tooth.
6. The stator assembly according to claim 4, further comprising an upper insulating framework and a lower insulating framework, wherein a first clamping column is arranged at the bottom of the upper insulating framework, a second clamping column is arranged at the top of the lower insulating framework, an upper positioning hole is arranged at the top of the stator core, a lower positioning hole is arranged at the bottom of the stator core, the first clamping column is in fit connection with the upper positioning hole, and the second clamping column is in fit connection with the lower positioning hole.
7. The stator assembly of claim 6, further comprising a platinum resistance sensor, wherein the upper insulating framework and the lower insulating framework are each provided with a plurality of second stator teeth, and the second stator teeth of the upper insulating framework are provided with grooves for fixing the platinum resistance sensor.
8. The stator assembly of claim 7 wherein an inwardly projecting catch is provided in the recess of the second stator tooth of the upper insulating skeleton.
9. The stator assembly of claim 6, wherein the upper surface of the upper insulating framework is further provided with a plug-in strip slot for fixing a wiring plug-in strip, and the plug-in strip slot comprises a three-phase outlet plug-in strip slot and a sensor outlet plug-in strip slot.
10. An electric pump comprising a stator assembly according to any of claims 4-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921870255.8U CN210693580U (en) | 2019-11-01 | 2019-11-01 | Stator core punching sheet, stator assembly and electronic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921870255.8U CN210693580U (en) | 2019-11-01 | 2019-11-01 | Stator core punching sheet, stator assembly and electronic pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210693580U true CN210693580U (en) | 2020-06-05 |
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ID=70886222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921870255.8U Active CN210693580U (en) | 2019-11-01 | 2019-11-01 | Stator core punching sheet, stator assembly and electronic pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210693580U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112671199A (en) * | 2021-01-20 | 2021-04-16 | 苏州博特蒙电机有限公司 | High-power permanent magnet brushless motor |
| CN112769272A (en) * | 2021-01-20 | 2021-05-07 | 苏州博特蒙电机有限公司 | Sine brushless permanent magnet motor |
-
2019
- 2019-11-01 CN CN201921870255.8U patent/CN210693580U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112671199A (en) * | 2021-01-20 | 2021-04-16 | 苏州博特蒙电机有限公司 | High-power permanent magnet brushless motor |
| CN112769272A (en) * | 2021-01-20 | 2021-05-07 | 苏州博特蒙电机有限公司 | Sine brushless permanent magnet motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240828 Address after: 3rd Floor, Production Building 1, No. 1 Yanglin Road, Baiyan Science and Technology Park, High-tech Zone, Hefei City, Anhui Province, 230000 Patentee after: Hefei Xinhu New Energy Co.,Ltd. Country or region after: China Address before: 230088 No. 1, Yanglin Road, Baiyan Industrial Park, high tech Zone, Hefei City, Anhui Province Patentee before: Hefei Xinhu Canned Motor Pump Co.,Ltd. Country or region before: China |
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| TR01 | Transfer of patent right |