CN110729830A - High-speed rotor punching sheet and rotor structure - Google Patents
High-speed rotor punching sheet and rotor structure Download PDFInfo
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- CN110729830A CN110729830A CN201911034872.9A CN201911034872A CN110729830A CN 110729830 A CN110729830 A CN 110729830A CN 201911034872 A CN201911034872 A CN 201911034872A CN 110729830 A CN110729830 A CN 110729830A
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- magnetic steel
- slot
- groove
- rotor punching
- punching sheet
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- 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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
Abstract
The technology discloses a high-speed rotor punching sheet and a rotor structure, which comprises a rotor punching sheet, wherein a rotating shaft hole is formed in the middle of the rotor punching sheet, a plurality of double-magnetic-pole slot structures are uniformly distributed in the circumferential direction of the rotor punching sheet, each double-magnetic-pole slot structure comprises a first large magnetic steel slot, a second large magnetic steel slot, a first small magnetic steel slot, a second small magnetic steel slot, a first air magnetic isolation slot and a second air magnetic isolation slot, the first small magnetic steel slot and the second small magnetic steel slot are located on the outer sides of the first large magnetic steel slot and the second large magnetic steel slot, the first air magnetic isolation slot is located on one side of the first large magnetic steel slot, the second air magnetic isolation slot is located on one side of the second large magnetic steel slot, a first strip-shaped reinforcing rib is formed between the first large magnetic steel slot and the second large magnetic steel slot, and a second strip-shaped. This technique adopts two magnetic pole groove structures, can improve the mechanical strength of rotor through the mode that increases the strengthening rib, and then improves motor running speed, and the reliability is high, has avoided producing when the motor runs at a high speed to sweep thorax, magnet steel departure scheduling problem.
Description
Technical Field
The technology belongs to the technical field of motors, and particularly relates to a high-speed rotor punching sheet and a rotor structure.
Background
The permanent magnet motor is used as an important power source, and the requirements on the rotor structure of the permanent magnet motor are high strength and high rotating speed. The existing permanent magnet motor rotor cannot bear high rotating speed, so that the problems of sweeping the chamber, flying out of magnetic steel and the like are caused when the motor runs at high speed, and a rotor core is generally formed by laminating and riveting rotor punching sheets, so that the problems are solved by providing a novel rotor punching sheet and a novel rotor structure.
Disclosure of Invention
The technical problem that this technique will be solved provides a high-speed rotor punching and rotor structure to the not enough of above-mentioned prior art, and this high-speed rotor punching and rotor structure adopts a two magnetic pole groove structure, can improve the mechanical strength of rotor through the mode that increases the strengthening rib, and then improves motor running speed, and the reliability is high, has avoided producing when the motor runs at a high speed to sweep thorax, magnet steel departure scheduling problem.
In order to achieve the technical purpose, the technical scheme adopted by the technology is as follows:
a high-speed rotor punching sheet comprises a rotor punching sheet, wherein a rotating shaft hole is arranged in the middle of the rotor punching sheet, a plurality of double-magnetic pole slot structures are uniformly distributed in the circumferential direction of the rotor punching sheet, each double-magnetic pole slot structure comprises a large magnetic steel slot I, a large magnetic steel slot II, a small magnetic steel slot I, a small magnetic steel slot II, an air magnetism isolating slot I and an air magnetism isolating slot II, the first large magnetic steel groove and the second large magnetic steel groove are positioned on the same straight line, the first small magnetic steel groove and the second small magnetic steel groove are positioned on the same straight line, the first small magnetic steel groove and the second small magnetic steel groove are positioned at the outer sides of the first large magnetic steel groove and the second large magnetic steel groove, the first air magnetic isolation groove is positioned at one side of the first large magnetic steel groove, the second air magnetic isolation groove is positioned at one side of the second large magnetic steel groove, a strip-shaped reinforcing rib I is formed between the large magnetic steel groove I and the large magnetic steel groove II, and a strip-shaped reinforcing rib II is formed between the small magnetic steel groove I and the small magnetic steel groove II.
As a further improved technical scheme of the technology, the first air magnetic isolation groove and the second air magnetic isolation groove are symmetrically arranged, a strip-shaped magnetic bridge I is formed between the first air magnetic isolation groove and the first large magnetic steel groove, and a strip-shaped magnetic bridge II is formed between the second air magnetic isolation groove and the second large magnetic steel groove.
As a further improved technical scheme of the technology, the first magnetic bridge and the second magnetic bridge are in special-shaped structures, namely two side edges of the first magnetic bridge and the second magnetic bridge are in non-linear shapes.
As a further improved technical scheme of the technology, the first reinforcing rib and the second reinforcing rib are of special-shaped structures, namely two side edges of the first reinforcing rib and the second reinforcing rib are of non-linear shapes.
As a further improved technical scheme of the technology, one end of the first large magnetic steel groove is provided with a first auxiliary groove, and the other end of the first large magnetic steel groove is provided with a second auxiliary groove.
As the technical scheme of further improvement of the technology, the number of the first auxiliary groove is 2, the number of the second auxiliary groove is 1, and the first auxiliary groove is positioned on one side close to the first reinforcing rib.
As a further improved technical scheme of the technology, the first large magnetic steel groove and the second large magnetic steel groove are identical in structure and are symmetrically arranged.
As a further improved technical scheme of the technology, the small magnetic steel groove I and the small magnetic steel groove II both contain an air magnetism isolating groove III.
As a further improved technical scheme of the technology, the rotor punching sheet is a silicon steel rotor punching sheet.
In order to achieve the technical purpose, the technology adopts another technical scheme as follows:
a high-speed rotor structure comprises the rotor punching sheet.
The beneficial effect of this technique does:
(1) the rotor punching sheet stacking structure has the advantages that the large magnetic steel groove is divided into two sections, namely the first large magnetic steel groove and the second large magnetic steel groove, the small magnetic steel groove is divided into two sections, namely the first small magnetic steel groove and the second small magnetic steel groove, reinforcing ribs are formed between the first large magnetic steel groove and the second large magnetic steel groove and between the first small magnetic steel groove and the second small magnetic steel groove, the rotor core formed by stacking the rotor punching sheets of the structure improves the mechanical strength of the rotor, and the high-speed operation, the low cost and the high reliability of the motor are realized.
(2) The first magnetic bridge and the second magnetic bridge are of special-shaped structures, and the first reinforcing rib and the second reinforcing rib are of special-shaped structures.
(3) The auxiliary groove I and the auxiliary groove II can reduce the demagnetization risk of the magnetic steel and improve the working reliability of the motor.
Drawings
Fig. 1 is a schematic structural diagram of a rotor sheet according to an embodiment of the present technology.
Fig. 2 is an enlarged view of a dual-pole slot configuration in accordance with an embodiment of the present technique.
Detailed Description
Further explanation follows regarding embodiments of the present technique with reference to fig. 1-2:
the high-speed rotor punching sheet comprises a rotor punching sheet 1, wherein a rotating shaft hole 12 is formed in the middle of the rotor punching sheet 1, a plurality of double-magnetic-pole groove structures are periodically and uniformly distributed in the circumferential direction of the rotor punching sheet, each double-magnetic-pole groove structure comprises a first large magnetic steel groove 3, a second large magnetic steel groove 6, a first small magnetic steel groove 4, a second small magnetic steel groove 5, a first air magnetic isolation groove 2 and a second air magnetic isolation groove 7, the first large magnetic steel groove 3 and the second large magnetic steel groove 6 are located on the same straight line, the first small magnetic steel groove 4 and the second small magnetic steel groove 5 are located on the same straight line, and the first small magnetic steel groove 4, the second small magnetic steel groove 5, the first large magnetic steel groove 3 and the second large magnetic steel groove 6 form a double-structure magnetic pole. Little magnetism steel slot one 4 and little magnetism steel slot two 5 are located big magnet steel slot one 3 and big magnetism steel slot two 6's the outside, air magnetism isolating slot one 2 is located one side of big magnet steel slot one 3, and air magnetism isolating slot two 7 is located one side of big magnet steel slot two 6, form banding strengthening rib one 9 between big magnetism steel slot one 3 and the big magnetism steel slot two 6, form banding strengthening rib two 10 between little magnetism steel slot one 4 and little magnetism steel slot two 5.
In this embodiment, the first air magnetic isolation groove 2 and the second air magnetic isolation groove 7 are symmetrically arranged, a strip-shaped magnetic bridge first 8 is formed between the first air magnetic isolation groove 2 and the first large magnetic steel groove 3, and a strip-shaped magnetic bridge second 11 is formed between the second air magnetic isolation groove 7 and the second large magnetic steel groove 6. Referring to fig. 2, the first small magnetic steel groove 4 and the second small magnetic steel groove 5 both contain a third air magnetic isolation groove 15, and the first small magnetic steel groove 4 and the second small magnetic steel groove 5 are symmetrically arranged.
In this embodiment, the first magnetic bridge 8 and the second magnetic bridge 11 are in a special-shaped structure, that is, two side edges of the first magnetic bridge 8 and the second magnetic bridge 11 are in a non-linear shape. The first reinforcing rib 9 and the second reinforcing rib 10 are of special-shaped structures, namely two side edges of the first reinforcing rib 9 and the second reinforcing rib 10 are of non-linear shapes. The design can eliminate stress concentration and improve the working rotating speed of the rotor.
In this embodiment, one end of the first large magnetic steel groove 3 is provided with a first auxiliary groove 13, and the other end of the first large magnetic steel groove is provided with a second auxiliary groove 14. Wherein the first auxiliary groove 13 has 2, the second auxiliary groove 14 has 1, and the first auxiliary groove 13 is positioned at one side close to the first reinforcing rib 9. And one end of the large magnetic steel groove II 6 is provided with an auxiliary groove I13, and the other end of the large magnetic steel groove II is provided with an auxiliary groove II 14. Wherein the first auxiliary groove 13 has 2, the second auxiliary groove 14 has 1, and the first auxiliary groove 13 is positioned at one side close to the first reinforcing rib 9. The auxiliary groove of this embodiment can reduce magnet steel demagnetization risk, improves motor operational reliability.
The first large magnetic steel groove 3 and the second large magnetic steel groove 6 of the embodiment are identical in structure and are symmetrically arranged.
The rotor punching sheet of the embodiment is provided with a plurality of riveting points, and the plurality of rotor punching sheets are laminated through the riveting points to form a rotor core. The first large magnetic steel slot 3 and the second large magnetic steel slot 6 of the rotor core are respectively used for inserting large magnetic steel, and the first small magnetic steel slot 4 and the second small magnetic steel slot 5 are respectively used for inserting small magnetic steel, so that a double-magnetic pole structure is formed.
The embodiment further provides a rotor structure, including a plurality of above-mentioned rotor punching, a plurality of above-mentioned rotor punching are folded through the riveting and are pressed and form rotor core, insert magnet steel and rotor core's pivot hole 12 and pivot interference or key fit and then form rotor structure in the rotor core.
This embodiment equally divide into two sections with a type magnet steel, is equipped with supplementary strengthening rib between two magnet steels, is about to big magnet steel groove and divide into two magnet steel grooves: and a first reinforcing rib 9 is formed between the first large magnetic steel groove 3 and the second large magnetic steel groove 6. Divide into two magnet steel grooves with little magnet steel groove: and a second reinforcing rib 10 is formed between the first small magnetic steel groove 4 and the second small magnetic steel groove 5. The magnetic poles of the rotor core formed by laminating the rotor punching sheets are of a double-line structure, and compared with V-shaped and straight-line structures in the prior art, the reluctance torque ratio is increased, and the flux-weakening speed expansion is facilitated. Every magnetic pole comprises four magnet steels, and two little magnet steels are put into little magnet steel groove one 4 respectively promptly, little magnet steel groove two 5 and two big magnet steels are put into big magnet steel groove one 3 respectively, big magnet steel groove two 6 respectively, and the strengthening rib 9 that is located between little magnet steel groove one 4, little magnet steel groove two 5 and the strengthening rib two 10 that is located between little magnet steel groove one 4, little magnet steel groove two 5 can improve rotor mechanical strength, and then improve rotor speed. The rotor core of the present embodiment is interference or key-fitted to the rotating shaft.
The technical scope of the present invention includes, but is not limited to, the above embodiments, the technical scope of the present invention is defined by the claims, and any replacement, modification, and improvement that can be easily conceived by those skilled in the art are included in the technical scope of the present invention.
Claims (10)
1. The utility model provides a high-speed rotor punching, includes rotor punching, its characterized in that: the rotor punching sheet is characterized in that a rotating shaft hole is formed in the middle of the rotor punching sheet, a plurality of double-magnetic-pole slot structures are uniformly distributed in the circumferential direction of the rotor punching sheet, each double-magnetic-pole slot structure comprises a large magnetic steel slot I, a large magnetic steel slot II, a small magnetic steel slot I, a small magnetic steel slot II, an air magnetic isolation slot I and an air magnetic isolation slot II, the large magnetic steel slot I and the large magnetic steel slot II are located on the same straight line, the small magnetic steel slot I and the small magnetic steel slot II are located on the outer sides of the large magnetic steel slot I and the large magnetic steel slot II, the air magnetic isolation slot I is located on one side of the large magnetic steel slot I, the air magnetic isolation slot II is located on one side of the large magnetic steel slot II, a strip-shaped reinforcing rib I is formed between the large magnetic steel slot I and the large magnetic steel slot II, and a strip-shaped reinforcing rib II is formed between the small magnetic steel slot I and the small magnetic steel slot II.
2. The high-speed rotor punching sheet according to claim 1, characterized in that: the air magnetism isolating groove I and the air magnetism isolating groove II are symmetrically arranged, a strip-shaped magnetic bridge I is formed between the air magnetism isolating groove I and the large magnetic steel groove I, and a strip-shaped magnetic bridge II is formed between the air magnetism isolating groove II and the large magnetic steel groove II.
3. The high-speed rotor punching sheet according to claim 2, characterized in that: the first magnetic bridge and the second magnetic bridge are of special-shaped structures, namely two side edges of the first magnetic bridge and the second magnetic bridge are of non-linear shapes.
4. The high-speed rotor punching sheet according to claim 3, characterized in that: the first reinforcing rib and the second reinforcing rib are of special-shaped structures, namely two side edges of the first reinforcing rib and the second reinforcing rib are of non-linear shapes.
5. The high-speed rotor punching sheet according to claim 1, characterized in that: one end of the first large magnetic steel groove is provided with a first auxiliary groove, and the other end of the first large magnetic steel groove is provided with a second auxiliary groove.
6. The high-speed rotor punching sheet according to claim 5, characterized in that: the first auxiliary groove is 2, the second auxiliary groove is 1, and the first auxiliary groove is located on one side close to the first reinforcing rib.
7. The high-speed rotor punching sheet according to claim 6, characterized in that: the first large magnetic steel groove and the second large magnetic steel groove are identical in structure and are symmetrically arranged.
8. The high-speed rotor punching sheet according to claim 1, characterized in that: and the first small magnetic steel groove and the second small magnetic steel groove both contain a third air magnetic isolation groove.
9. The high-speed rotor punching sheet according to any one of claims 1 to 8, characterized in that: the rotor punching sheet is a silicon steel rotor punching sheet.
10. A high speed rotor structure characterized by: the high-speed rotor punching sheet comprises the high-speed rotor punching sheet as claimed in any one of claims 1 to 8.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911034872.9A CN110729830A (en) | 2019-10-29 | 2019-10-29 | High-speed rotor punching sheet and rotor structure |
| PCT/CN2020/084731 WO2021082359A1 (en) | 2019-10-29 | 2020-04-14 | High-speed rotor punching sheet and rotor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911034872.9A CN110729830A (en) | 2019-10-29 | 2019-10-29 | High-speed rotor punching sheet and rotor structure |
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| Publication Number | Publication Date |
|---|---|
| CN110729830A true CN110729830A (en) | 2020-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911034872.9A Pending CN110729830A (en) | 2019-10-29 | 2019-10-29 | High-speed rotor punching sheet and rotor structure |
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| CN (1) | CN110729830A (en) |
| WO (1) | WO2021082359A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021082359A1 (en) * | 2019-10-29 | 2021-05-06 | 宁波菲仕运动控制技术有限公司 | High-speed rotor punching sheet and rotor structure |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106972663B (en) * | 2017-04-01 | 2023-09-01 | 上海英磁新能源科技有限公司 | High-torque permanent magnet motor |
| CN109245366B (en) * | 2018-11-19 | 2023-10-03 | 西安清泰科新能源技术有限责任公司 | Motor rotor punching sheet and permanent magnet synchronous motor adopting same |
| CN109639001A (en) * | 2018-12-28 | 2019-04-16 | 苏州英磁新能源科技有限公司 | A kind of rotor for synchronous magnetic resistance motor |
| CN209267298U (en) * | 2019-01-25 | 2019-08-16 | 珠海英搏尔电气股份有限公司 | A kind of magneto, rotor and rotor punching |
| CN110729830A (en) * | 2019-10-29 | 2020-01-24 | 宁波菲仕运动控制技术有限公司 | High-speed rotor punching sheet and rotor structure |
-
2019
- 2019-10-29 CN CN201911034872.9A patent/CN110729830A/en active Pending
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2020
- 2020-04-14 WO PCT/CN2020/084731 patent/WO2021082359A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021082359A1 (en) * | 2019-10-29 | 2021-05-06 | 宁波菲仕运动控制技术有限公司 | High-speed rotor punching sheet and rotor structure |
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| WO2021082359A1 (en) | 2021-05-06 |
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