CN214590828U - High-speed permanent magnet motor rotor punching sheet structure - Google Patents
High-speed permanent magnet motor rotor punching sheet structure Download PDFInfo
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- CN214590828U CN214590828U CN202121117727.XU CN202121117727U CN214590828U CN 214590828 U CN214590828 U CN 214590828U CN 202121117727 U CN202121117727 U CN 202121117727U CN 214590828 U CN214590828 U CN 214590828U
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- 238000004080 punching Methods 0.000 title claims abstract description 67
- 229910000976 Electrical steel Inorganic materials 0.000 claims abstract description 19
- 238000002955 isolation Methods 0.000 claims abstract description 13
- 238000004891 communication Methods 0.000 claims abstract description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012938 design process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
A high-speed permanent magnet motor rotor punching structure comprises a first rotor punching and a second rotor punching, wherein the first rotor punching is a non-oriented silicon steel sheet, the second rotor punching is an oriented silicon steel sheet, a plurality of magnet mounting holes are uniformly distributed in the circumferential direction of the first rotor punching, a plurality of pairs of strip-shaped holes are uniformly distributed in the outer edge of the first rotor punching, the cross section of each pair of strip-shaped holes forms a V-shaped structure which expands along the radial direction, the second rotor punching is composed of a plurality of first sub-modules and a plurality of second sub-modules which are equal in number, the second sub-modules disconnect the communication of the bottoms of the strip-shaped holes of the V-shaped structure to form a magnetic isolation bridge structure, the rotor punching adopts a punching structure formed by mixing oriented silicon steel and non-oriented silicon steel, the requirements of a built-in high-speed permanent magnet motor on high power density and high rotation speed are met, and the rotor punching structure has the advantages of high mechanical structure strength, high rigidity and long service life, The magnetic leakage coefficient is small, the application requirements on a high-speed and high-power permanent magnet motor are effectively met, and the high-speed and high-power permanent magnet motor has better economical efficiency and reliability.
Description
Technical Field
The utility model relates to a motor field especially relates to permanent-magnet machine rotor punching technique, specifically is a high-speed permanent-magnet machine rotor punching structure.
Background
The permanent magnet motor has the advantages of high power density, high operation efficiency and the like, and is widely applied to the industry of new energy drive motors at present. Permanent magnet motors can be divided into surface-mounted permanent magnet motors, embedded permanent magnet motors and built-in permanent magnet motors according to the spatial geometric distribution of permanent magnets. The built-in permanent magnet motor is favored in new energy electric vehicle application because of the advantages of large torque density, wide flux weakening range, high operating efficiency and the like.
At present, the mechanical strength and the rigidity of a motor rotor are important technical indexes of a high-speed built-in permanent magnet motor. When the motor runs at a high speed, the magnetic isolation bridge is used as the most easily broken part of the rotor structure of the permanent magnet motor and mainly bears the action of centrifugal force. Meanwhile, the magnetic isolation bridge plays a role of preventing excessive magnetic leakage, so that the magnetic isolation bridge is required to have a slim size in terms of electromagnetic performance. And the magnetic isolation bridge with a long and thin size can generate larger stress under the action of centrifugal force due to small bearing area under the condition of high rotating speed, and the stress often exceeds the yield strength of non-oriented silicon steel materials, so that the strength of the whole rotor structure is insufficient, and the risk is brought to the rotor. And if the design of the magnetic isolation bridge with larger cross section area is adopted, although the strength can be satisfied, the magnetic performance can be weakened. With the development of the new energy motor industry and the higher requirement of high speed on the strength of the motor rotor, the traditional motor rotor punching structure cannot meet the requirements of the built-in permanent magnet motor rotor on high power density and high rotating speed.
Disclosure of Invention
An object of the utility model is to provide a high-speed permanent-magnet machine rotor punching sheet structure, adopt the punching sheet structure that oriented silicon steel and non-oriented silicon steel mix, strength properties and the magnetic property of material have been given play to, a mechanical strength and rigidity are high and magnetic leakage coefficient is less relatively built-in permanent-magnet machine rotor punching sheet structure is provided, in order to satisfy built-in high-speed permanent-magnet machine to high power density and high rotational speed requirement, mechanical structure intensity has, rigidity is high, long service life, magnetic leakage coefficient is little, satisfy high rotational speed, the last application demand of high-power permanent-magnet machine.
The utility model discloses a high-speed permanent magnet motor rotor punching sheet structure, including install the first rotor punching sheet on the output shaft and with the second rotor punching sheet of first rotor punching sheet lock joint, first rotor punching sheet is non-oriented silicon steel sheet, the second rotor punching sheet is oriented silicon steel sheet, a plurality of magnet mounting holes have been seted up to the circumference equipartition of first rotor punching sheet, the outer fringe department equipartition of first rotor punching sheet has seted up many pairs of bar-shaped hole, the cross section of each pair of bar-shaped hole constitutes the V font structure of radial extension, bar-shaped magnet steel all places in bar-shaped hole and the magnet mounting hole, the second rotor punching sheet comprises a plurality of first submodule pieces and a plurality of sub second submodule pieces equal in quantity, first submodule piece passes through buckle structure equipartition and connects on the outer circumference of first rotor punching sheet, and with the top in V font structure bar-shaped hole is connected, the second sub-modules are installed in the first rotor punching sheet in the radial direction through a buckle structure and located at the bottom of the V-shaped structure strip-shaped hole, and the second sub-modules are disconnected from the bottom of the V-shaped structure strip-shaped hole to form a magnetic isolation bridge structure.
Furthermore, the rotor punching sheets are four pairs of pole rotor punching sheets, three strip-shaped magnetic steels are arranged corresponding to each pole, and the number of the first sub-modules and the number of the second sub-modules are eight.
Furthermore, the second rotor punching sheet and the first rotor punching sheet are connected in a buckling mode through a concave-convex structure.
The utility model discloses a theory of operation is: in the design and manufacturing process of the rotor punching sheet, the design of the oriented silicon steel magnetic isolation bridge is adopted to replace a non-oriented silicon steel material, the effect that the width of the magnetic isolation bridge is increased and the electromagnetic performance is not influenced is achieved, on the other hand, the yield strength of the oriented silicon steel is larger than that of the non-oriented steel through a proper heat treatment process, and the rotor structure used by the rotor punching sheet is suitable for high rotating speed through the increase of the sectional area and the increase of the mechanical performance of the material.
Compared with the prior art, the utility model, its effect is positive and obvious. The utility model discloses an adopt the lamination structure that oriented silicon steel and non-oriented silicon steel mix, give play to combined material's intensity performance and magnetic property, realize mechanical strength and the high and relatively less rotor lamination structure of magnetic leakage coefficient of rigidity to satisfy built-in high-speed permanent-magnet machine to high power density and high rotational speed's requirement, mechanical structure intensity has, rigidity is high, long service life, the magnetic leakage coefficient is little, effectively satisfy high rotational speed, the last application demand of high-power permanent-magnet machine, better economic nature and reliability have.
Drawings
Fig. 1 is the overall structure schematic diagram of the rotor sheet of the present invention.
Fig. 2 is a schematic view of a local structure of a rotor sheet of the present invention.
Detailed Description
Example 1:
as shown in fig. 1 and fig. 2, the high-speed permanent magnet motor rotor punching structure of the present invention includes a first rotor punching sheet 1 mounted on an output shaft and a second rotor punching sheet 2 fastened to the first rotor punching sheet 1, the first rotor punching sheet 1 is provided with lightening holes, the first rotor punching sheet 1 is a non-oriented silicon steel sheet, the second rotor punching sheet 2 is an oriented silicon steel sheet, a plurality of magnet mounting holes 101 are uniformly distributed and opened in the circumferential direction of the first rotor punching sheet 1, a plurality of pairs of bar-shaped holes 102 are uniformly distributed and opened at the outer edge of the first rotor punching sheet 1, the cross section of each pair of bar-shaped holes 102 forms a V-shaped structure expanding in the radial direction, bar-shaped magnetic steels 103 are placed in the bar-shaped holes 102 and the magnet mounting holes 101, the second rotor punching sheet 2 is composed of a plurality of first sub-modules 201 and a plurality of second sub-modules 202 equal in number, the first sub-modules 201 are uniformly connected to the outer circumference of the first rotor punching sheet 1 through a buckle structure, the sub-second sub-module 202 is installed in the first rotor punching sheet 1 along the radial direction and located at the bottom of the V-shaped structure strip-shaped hole 102 through a buckle structure, the sub-second sub-module 202 breaks communication of the bottom of the V-shaped structure strip-shaped hole 102 to form a magnetic isolation bridge structure, the magnetic isolation bridge structure is located on the second rotor punching sheet 2, the width of the magnetic isolation bridge structure is larger than that of the prior art, mechanical strength and rigidity of the rotor are improved, and due to the fact that the second rotor punching sheet 2 is made of the oriented silicon steel material, the electromagnetic performance of the whole rotor cannot be affected by the increase of the width.
Further, the rotor punching sheet is a four-pair-pole rotor punching sheet, three strip-shaped magnetic steels 103 are arranged corresponding to each pole, and the first sub-module 201 and the second sub-module 202 of the second rotor punching sheet 2 both have 8 identical structures.
Furthermore, the buckling connection mode of the second rotor punching sheet 2 and the first rotor punching sheet 1 is a concave-convex structure, and the installation process of the rotor can be flexibly adjusted according to the requirement by adopting the mode.
Claims (3)
1. The utility model provides a high-speed permanent-magnet machine rotor punching structure which characterized in that: the first rotor punching sheet is a non-oriented silicon steel sheet, the second rotor punching sheet is an oriented silicon steel sheet, a plurality of magnet mounting holes are uniformly distributed in the circumferential direction of the first rotor punching sheet, a plurality of pairs of strip-shaped holes are uniformly distributed at the outer edge of the first rotor punching sheet, the cross section of each pair of strip-shaped holes forms a V-shaped structure which expands along the radial direction, strip-shaped magnetic steel is arranged in each strip-shaped hole and each magnet mounting hole, the second rotor punching sheet is composed of a plurality of first sub-modules and a plurality of second sub-modules which are equal in number, the first sub-modules are uniformly distributed and connected to the outer circumference of the first rotor punching sheet through buckle structures and connected to the top of the V-shaped structure strip-shaped holes, and the second sub-modules are radially mounted in the first rotor punching sheet through the buckle structures and located at the bottoms of the V-shaped structure strip-shaped holes And at the position, the sub-second sub-module disconnects the communication of the bottoms of the strip-shaped holes of the V-shaped structure to form a magnetic isolation bridge structure.
2. The rotor sheet structure of the high-speed permanent magnet motor according to claim 1, wherein: the rotor punching sheet is a four-pair-pole rotor punching sheet, three strip-shaped magnetic steels are arranged corresponding to each pole, and the number of the first sub-modules and the number of the second sub-modules are eight.
3. The rotor sheet structure of the high-speed permanent magnet motor according to claim 1, wherein: the second rotor punching sheet and the first rotor punching sheet are connected in a buckling mode through a concave-convex structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121117727.XU CN214590828U (en) | 2021-05-24 | 2021-05-24 | High-speed permanent magnet motor rotor punching sheet structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121117727.XU CN214590828U (en) | 2021-05-24 | 2021-05-24 | High-speed permanent magnet motor rotor punching sheet structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214590828U true CN214590828U (en) | 2021-11-02 |
Family
ID=78362865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121117727.XU Active CN214590828U (en) | 2021-05-24 | 2021-05-24 | High-speed permanent magnet motor rotor punching sheet structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214590828U (en) |
-
2021
- 2021-05-24 CN CN202121117727.XU patent/CN214590828U/en active Active
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