CN110875657A - Motor rotor, motor and electric automobile - Google Patents
Motor rotor, motor and electric automobile Download PDFInfo
- Publication number
- CN110875657A CN110875657A CN201811015452.1A CN201811015452A CN110875657A CN 110875657 A CN110875657 A CN 110875657A CN 201811015452 A CN201811015452 A CN 201811015452A CN 110875657 A CN110875657 A CN 110875657A
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- China
- Prior art keywords
- permanent magnet
- rotor
- motor
- magnet
- center line
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Classifications
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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]
-
- 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
-
- 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
Abstract
The utility model relates to a motor rotor, motor and electric automobile, motor rotor include the rotor core that is formed by a plurality of rotor punching stacks to and the magnetic pole group, the magnetic pole group sets up in each magnetic steel groove of rotor core along circumference interval, and each magnetic pole group includes first permanent magnet, second permanent magnet and third permanent magnet, and first permanent magnet and third permanent magnet all follow circumference arranges the structure of symmetry separately about radial center line, and the third permanent magnet is located the inboard of first permanent magnet on radial center line direction interval, and the second permanent magnet is a pair of and arranges the both sides at first permanent magnet and third permanent magnet about radial center line interval symmetry each other. From this, through add the third permanent magnet on the basis that sets up first permanent magnet along circumference on the rotor core for the whole quantity grow of permanent magnet of electric motor rotor improves the air gap flux density, makes the electromagnetic torque grow and plays the effect that improves the total torque of motor.
Description
Technical Field
The disclosure relates to the technical field of motors, in particular to a motor rotor, a motor and an electric automobile.
Background
The motor is widely applied to various technical fields as a driving device, for example, the motor can be used as a driving motor of an electric automobile to realize the function of driving the automobile to run, in this case, because the driving motor is limited by the yield strength of silicon steel sheets in a high-speed working state, a small-volume driving motor is usually required to be designed, and because the small-volume driving motor is limited by the arrangement space, the consumption of magnetic steel is too small, and the air gap flux density and the electromagnetic torque are reduced. In this regard, in order to meet the torque requirement of the motor, a large current is generally supplied to the stator of the motor, which in turn leads to an increase in the copper consumption of the stator, so that the heat dissipation problem of the small-sized motor is further worsened. Therefore, how to reasonably design a technology capable of simultaneously considering the heat dissipation performance of the motor and the torque requirement of the motor is a problem to be solved at present.
Disclosure of Invention
The purpose of the present disclosure is to provide a motor rotor, a motor including the motor rotor, and an electric vehicle, which can improve the total torque of the motor while ensuring heat dissipation performance.
In order to achieve the above object, the present disclosure provides an electric motor rotor, electric motor rotor includes the rotor core that is formed by a plurality of rotor punching stacks to and the magnetic pole group, the magnetic pole group sets up along circumference interval each magnetic steel inslot of rotor core, and each magnetic pole group includes first permanent magnet, second permanent magnet and third permanent magnet, first permanent magnet with the third permanent magnet all follows circumference arranges the structure of symmetry separately about radial center line, the third permanent magnet is in interval is located in the radial center line direction the inboard of first permanent magnet, the second permanent magnet is a pair of and about radial center line interval arrangement is symmetrical each other in first permanent magnet with the both sides of third permanent magnet.
Optionally, the width of the third permanent magnet in the circumferential direction is smaller than the width of the first permanent magnet.
Optionally, the first permanent magnet is disposed at a position close to an outer end of the second permanent magnet in the radial centerline direction, and the third permanent magnet is disposed at a position close to an inner end of the second permanent magnet in the radial centerline direction.
Optionally, in each of the magnetic pole groups, the first permanent magnet is a symmetrical one with the radial center line as a reference, and the cross section of the first permanent magnet is formed into a flat structure extending along the circumferential direction, or in each of the magnetic pole groups, the first permanent magnet is a pair of permanent magnets arranged along the circumferential direction at intervals, the pair of permanent magnets are symmetrical with each other with the radial center line as a reference, and the pair of permanent magnets are matched into a V-shaped structure with a radial outward opening.
Optionally, in each of the magnetic pole groups, the third permanent magnet is one of the magnetic pole groups that is symmetrical with respect to the radial center line, and has a cross section that is formed as a flat structure extending in the circumferential direction, or in each of the magnetic pole groups, the third permanent magnet is a pair of permanent magnets that are arranged at intervals in the circumferential direction, the pair of permanent magnets are symmetrical with respect to the radial center line, and the pair of permanent magnets are matched with each other to form a V-shaped structure that is open radially outward.
Alternatively, a pair of the second permanent magnets may be inclined radially inward toward a direction approaching each other to be configured as a V-shaped structure in cooperation with each other.
Optionally, the magnet steel slot includes first magnet steel slot, second magnet steel slot and third magnet steel slot, first magnet steel slot is used for inserting first permanent magnet, second magnet steel slot is used for inserting the second permanent magnet, third magnet steel slot is used for inserting the third permanent magnet, the third permanent magnet is arranged two position between the inner of second magnet steel slot, third magnet steel slot respectively with two be provided with between the second magnet steel slot and separate the magnetic bridge.
Optionally, the first permanent magnet and the second permanent magnet are formed in the same structure.
According to another aspect of the present disclosure, there is provided an electric machine comprising a stator and a rotor, the rotor being disposed within the stator and the rotor being an electric machine rotor as described above.
According to still another aspect of the present disclosure, there is provided an electric vehicle including the drive motor as described above.
Through the technical scheme, promptly, this disclosed electric motor rotor need not to adopt the increase to the electric current of motor supply and under the circumstances of guaranteeing motor heat dispersion as in the existing, through add the third permanent magnet on the basis that sets up first permanent magnet along circumference on the rotor core, make electric motor rotor's whole quantity grow of permanent magnet in the magnetic pole group, the first permanent magnet in the rotor punching of piling up, the part that second permanent magnet and third permanent magnet enclosed jointly constitutes for the magnetic circuit region, the air gap magnetic density in this magnetic circuit region has been showing to have improved because of the addding of third permanent magnet here, consequently make electromagnetic torque grow and play the effect that improves the total torque of motor.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
FIG. 1 is a cross-sectional schematic view of a rotor of an electric machine showing one pole group according to one embodiment of the present disclosure;
FIG. 2 is a cross-sectional schematic view of a rotor of an electric machine showing one pole group in accordance with another embodiment of the present disclosure;
fig. 3 is a block diagram of a rotor of an electric machine according to an embodiment of the present disclosure.
Description of the reference numerals
1 magnetic steel groove 2 magnetic pole group
3 magnetic isolation bridge 4 magnetic circuit area
10 rotor punching 11 first magnetic steel groove
12 second magnetic steel groove and 13 third magnetic steel groove
21 first permanent magnet 22 second permanent magnet
23 radial center line of third permanent magnet A
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
In the present disclosure, unless otherwise stated, the use of directional terms such as "inner and outer" generally refers to inner and outer with respect to the outer contour of the electric machine rotor, "circumferential and radial" refer to circumferential and radial with respect to the electric machine rotor, and the reference to "cross section" in the present disclosure refers to the section shown in the direction of the corresponding drawing.
The present disclosure provides a motor rotor, a motor and an electric vehicle, wherein the motor may be a permanent magnet synchronous motor or the like, for example, may be a multi-pair permanent magnet synchronous motor having four pairs of poles, five pairs of poles or six pairs of poles as shown in fig. 3, especially an ultra high speed motor, that is, a motor having a rotation speed of 20000rpm or more, and the motor mentioned in the present disclosure may be used as a driving motor of an electric vehicle or the like. However, the present disclosure is not limited thereto, and may be applied to other technical fields.
As shown in fig. 1, according to an aspect of the present disclosure, there is provided an electric machine rotor, which includes a rotor core formed by stacking a plurality of rotor sheets 10, and a magnetic pole group 2, where the magnetic pole group 2 is circumferentially disposed at intervals in each magnetic steel slot 1 of the rotor core, each magnetic pole group 2 includes a first permanent magnet 21, a second permanent magnet 22, and a third permanent magnet 23, the first permanent magnet 21 and the third permanent magnet 23 are circumferentially disposed in a structure that is respectively symmetrical with respect to a radial center line a, the third permanent magnet 23 is circumferentially disposed at intervals in an inner side of the first permanent magnet 21 in the direction of the radial center line a, and the second permanent magnets 22 are a pair and are symmetrically disposed at intervals on two sides of the first permanent magnet 21 and the third permanent magnet 23 with respect to the radial center line a.
In the prior art, the ultra-high speed motor is generally small in design size due to the influence of the yield strength of a rotor punching sheet, so that the amount of magnetic steel installed in the rotor punching sheet is small, and the air gap flux density and the electromagnetic torque of the motor are reduced. In this regard, to meet the total torque requirement of the motor in a high speed state, a large current is generally supplied to the stator of the motor, which leads to an increase in copper loss of the stator, so that the heat dissipation problem of the small-sized motor is further worsened. To address this problem, the present disclosure is directed to the structure described above, that is, by providing a third permanent magnet 23 between two second permanent magnets 22 of the rotor core, the third permanent magnet 23 being located inside the first permanent magnet 21 in the radial center line a direction, wherein the first permanent magnet 21 and the third permanent magnet 23 are each symmetrical with respect to the radial center line a, and the two second permanent magnets 22 are symmetrical with respect to the radial center line a. Here, the no-load air gap flux density is mainly improved according to the permanent magnets on the motor rotor, and the motor rotor of the present disclosure does not need to increase the current supplied to the motor as in the prior art, and under the condition of ensuring the heat dissipation performance of the motor, by additionally providing the third permanent magnet 23 on the rotor core along the circumferential direction, the total amount of the permanent magnets of the motor rotor, specifically, in the magnetic pole group 2, the portion surrounded by the first permanent magnet 21, the second permanent magnet 22 and the third permanent magnet 23 in the stacked rotor sheets 10 is configured as the magnetic circuit region 4, and therefore, the air gap flux density in the magnetic circuit region 4 is significantly improved due to the addition of the third permanent magnet 23, so that the electromagnetic torque is increased, and the effect of improving the total torque of the motor is achieved.
The arrangement structure of the first permanent magnet 21, the second permanent magnet 22 and the third permanent magnet 23 may take various suitable forms as long as the function of increasing the total torque of the motor can be achieved, and here, since the total torque of the motor is the sum of the electromagnetic torque and the reluctance torque, the first permanent magnet 21 and the third permanent magnet 23 mainly affect the electromagnetic torque of the motor, and the second permanent magnet 22 mainly affects the reluctance torque and the electromagnetic torque of the motor, the effect of increasing the total torque can be finally achieved by reasonably designing the arrangement structure of the first permanent magnet 21, the second permanent magnet 22 and/or the third permanent magnet 23 to increase the electromagnetic torque and/or the reluctance torque.
Here, in order to facilitate the third permanent magnet 23 to be disposed inside the first permanent magnet 21 in the radial center line a direction, so that the arrangement structure of the first permanent magnet 21, the second permanent magnet 22, and the third permanent magnet 23 on the rotor core is more compact and rational, optionally, the width of the third permanent magnet 23 in the circumferential direction is smaller than the width of the first permanent magnet 21. In order to optimize the layout and reasonably utilize the space of the first permanent magnet 21, the second permanent magnet 22 and the third permanent magnet 23 in each magnetic pole group, optionally, the first permanent magnet 21 is arranged at a position close to the outer end of the second permanent magnet 22 in the direction of the radial center line a, and the third permanent magnet 23 is arranged at a position close to the inner end of the second permanent magnet 22 in the direction of the radial center line a. Therefore, the first permanent magnet 21, the second permanent magnet 22 and the third permanent magnet 23 jointly form a wider magnetic circuit area 4, and the magnetic circuit design of the motor rotor is optimized.
According to an embodiment of the present disclosure, optionally, in each of the magnetic pole groups 2, the first permanent magnet 21 is one that is symmetrical with respect to the radial center line a, and the cross section is formed in a flat structure extending along the circumferential direction, so that the first permanent magnet 21 has good electromagnetic performance and has an effect of facilitating machining and assembling. Or, according to another embodiment of the present disclosure, optionally, in each of the magnetic pole groups 2, the first permanent magnet 21 is a pair of permanent magnets arranged at intervals along the circumferential direction, the pair of permanent magnets are symmetrical to each other with the radial center line a as a reference, and the pair of permanent magnets are matched to form a V-shaped structure with a radially outward opening. Therefore, under the condition that the electromagnetic performance requirement of the first permanent magnet 21 is met, the overall strength of the motor rotor is optimized, the first permanent magnet 21 with the V-shaped structure is more suitable for an ultrahigh rotating speed motor, the problem of stress concentration of the motor rotor in an ultrahigh rotating speed working state is solved, and the use reliability of the motor is further improved.
Accordingly, according to an embodiment of the present disclosure, optionally, in each of the magnetic pole groups 2, the third permanent magnet 23 is one that is symmetrical with respect to the radial center line a, and the cross section is formed in a flat structure extending in the circumferential direction, so that the third permanent magnet 23 has good electromagnetic performance and has an effect of facilitating machining and assembling. Or, according to another embodiment of the present disclosure, optionally, in each of the magnetic pole groups 2, the third permanent magnet 23 is a pair of permanent magnets arranged at intervals along the circumferential direction, the pair of permanent magnets are symmetrical to each other with the radial center line a as a reference, and the pair of permanent magnets are matched with each other to form a V-shaped structure which is open radially outward. Therefore, under the condition that the electromagnetic performance requirement of the third permanent magnet 23 is met, the overall strength of the motor rotor is optimized, the problem of stress concentration of the motor rotor in a use state is solved, and the use reliability of the motor is improved. Here, the first permanent magnet 21 and the third permanent magnet 23 may adopt various combined arrangement structures, for example, as shown in fig. 1, the first permanent magnet 21 and the third permanent magnet 23 respectively adopt one arrangement mode, as shown in fig. 2, the first permanent magnet 21 and the third permanent magnet 23 respectively adopt one arrangement mode, and as another example, the first permanent magnet 21 and the third permanent magnet 23 may adopt one arrangement mode, or the first permanent magnet 21 and the third permanent magnet 23 respectively adopt two arrangement modes, and as for the various arrangement structures, the disclosure does not particularly limit the arrangement structures. Here, in order to ensure that the motor rotor has excellent electromagnetic performance, improve the overall strength of the motor rotor, and meanwhile, be convenient for assembling each permanent magnet and make the arrangement structure of each magnetic pole group on the rotor core more reasonable, optionally, an arrangement structure in which the first permanent magnet 21 is two and the third permanent magnet 23 is one is adopted.
In addition, in order to further increase the total torque of the motor, it is particularly preferable that the pair of second permanent magnets 22 are inclined radially inward toward a direction approaching each other to be configured into a V-shaped configuration in cooperation with each other. The expression "radially" in the context of the second permanent magnets 22 being inclined radially inwardly towards each other as indicated in the present disclosure is to be understood as being inclined radially, i.e. may include the second permanent magnets 22 being in the strict sense radially, as well as the second permanent magnets 22 being at a small angle to the radial direction. For example, the structural design of the pair of second permanent magnets 22 arranged radially can change the saliency to improve the reluctance torque of the motor by selecting an appropriate saliency, as described above, the electromagnetic torque of the motor can be improved by the arrangement structure of the first permanent magnets 21 and the third permanent magnets 23, and the reluctance torque of the motor can be improved by the structure of the pair of second permanent magnets 22, whereby the motor of the present disclosure can obtain a significantly improved total torque. For another example, when the pair of second permanent magnets 22 is arranged, the pair of second permanent magnets 22 may be arranged at a certain angle with the radial direction in combination with the strength of the rotor sheet 10, rather than being arranged strictly in the radial direction, so that the arrangement may improve the magnetic group torque of the motor while reducing the influence on the strength of the rotor sheet.
Optionally, as shown in fig. 1, the magnetic steel slot 1 includes a first magnetic steel slot 11 for inserting the first permanent magnet 21, a second magnetic steel slot 12 for inserting the second permanent magnet 22, and a third magnetic steel slot 13 for inserting the third permanent magnet 23, the third permanent magnet 23 is disposed at a position between inner ends of the two second magnetic steel slots 12, and in order to reduce magnetic leakage, magnetic isolation bridges 3 are disposed between the third magnetic steel slot 13 and the two second magnetic steel slots 12, respectively. The smaller the magnetic isolation bridge 3, the better, thereby reducing the magnetic leakage and increasing the air gap flux density. However, the present disclosure is not limited thereto, and alternatively, magnetic isolation holes may be provided between the third magnetic steel grooves 13 and the two second magnetic steel grooves 12, respectively. In addition, in order to enhance the strength of the entire rotor punching sheet 10, the lengths of the long sides of the first permanent magnet 21 and the second permanent magnet 22 in the direction shown in fig. 1 may be designed to be shorter.
Alternatively, the first permanent magnet 21 and the second permanent magnet 22 are formed in the same structure. Here, the first permanent magnet 21 and the second permanent magnet 22 may be made of the same material, and the same type of permanent magnet is beneficial to reducing the manufacturing and controlling costs of the permanent magnet, and also has the effect of facilitating the rapid assembly of the first permanent magnet 21 and the second permanent magnet 22 into the corresponding first magnet slot 11 and second magnet slot 12. However, the present disclosure is not limited thereto, and the first permanent magnet 21 and the second permanent magnet 22 may be designed appropriately according to actual needs, and for example, the first permanent magnet 21 and the second permanent magnet 22 may have structures with different shapes or sizes.
According to another aspect of the present disclosure, there is provided an electric machine comprising a stator and a rotor, the rotor being disposed within the stator and the rotor being an electric machine rotor as described above.
According to another aspect of the present disclosure, there is provided an electric vehicle including a driving motor, which is the motor as described above.
Namely, the motor provided by the disclosure can be suitable for being used as an ultra-high speed driving motor with the rotating speed of 20000rpm in an electric automobile, and the motor volume designed by the existing ultra-high speed driving motor is too small due to the limitation of the yield strength of a rotor punching sheet. When the motor volume is too small, the torque output by the motor is directly influenced despite the high rotation speed, so that the requirement for driving the motor cannot be met. In the prior art, in order to meet the total torque requirement of the motor in a high-speed state, a large current is usually supplied to a stator of the motor, which can increase copper loss of the stator, so that the heat dissipation problem of the small-volume motor is further worsened. In view of the above problem, the present disclosure adopts the structure as described above, that is, the third permanent magnet 23 is added on the basis of the first permanent magnet 21 circumferentially disposed on the rotor core, so that the overall usage amount of the permanent magnets of the motor rotor is increased, specifically, in the magnetic pole group 2, the portion surrounded by the first permanent magnet 21, the second permanent magnet 22 and the third permanent magnet 23 in the stacked rotor sheets 10 is constituted as the magnetic circuit region 4, and the air gap flux density in the magnetic circuit region 4 is significantly increased due to the addition of the third permanent magnet 23, so that the electromagnetic torque is increased to achieve the effect of increasing the total torque of the motor, so that the performance of the motor is significantly improved, and further, the performance of the electric vehicle is also significantly improved, and the present disclosure has wide practicability.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (10)
1. A motor rotor comprises a rotor core formed by overlapping a plurality of rotor punching sheets (10), and magnetic pole groups (2), wherein the magnetic pole groups (2) are arranged in the magnetic steel grooves (1) of the rotor core at intervals along the circumferential direction, characterized in that each magnetic pole group (2) comprises a first permanent magnet (21), a second permanent magnet (22) and a third permanent magnet (23), the first permanent magnet (21) and the third permanent magnet (23) are each arranged in the circumferential direction in a configuration which is symmetrical with respect to a radial center line (A), the third permanent magnet (23) is located inside the first permanent magnet (21) at an interval in the radial center line (A) direction, the second permanent magnets (22) are a pair and are arranged on both sides of the first permanent magnet (21) and the third permanent magnet (23) at intervals symmetrically with each other about the radial center line (A).
2. An electric machine rotor according to claim 1, characterized in that the width of the third permanent magnet (23) in the circumferential direction is smaller than the width of the first permanent magnet (21).
3. An electric machine rotor according to claim 1, characterized in that the first permanent magnet (21) is arranged in the direction of the radial centre line (a) in a position close to the outer end of the second permanent magnet (22), and the third permanent magnet (23) is arranged in the direction of the radial centre line (a) in a position close to the inner end of the second permanent magnet (22).
4. An electric machine rotor according to any one of claims 1-3, characterized in that in each pole group (2), the first permanent magnet (21) is one that is itself symmetrical with respect to the radial center line (A) and is formed in a flat-like structure extending in the circumferential direction in cross section, or in each pole group (2), the first permanent magnet (21) is a pair of permanent magnets arranged at intervals in the circumferential direction, the pair of permanent magnets being symmetrical with each other with respect to the radial center line (A), and the pair of permanent magnets are fitted into a V-shaped structure that is open radially outward.
5. An electric machine rotor according to any one of claims 1-3, characterized in that in each pole group (2), the third permanent magnet (23) is one that is itself symmetrical with respect to the radial center line (A) and is formed in a flat-like structure extending in the circumferential direction in cross section, or in each pole group (2), the third permanent magnet (23) is a pair of permanent magnets arranged at intervals in the circumferential direction, which are symmetrical with each other with respect to the radial center line (A), and which are fitted to each other in a V-shaped structure that is open radially outward.
6. An electric machine rotor, according to any of the claims 1-3, characterized in that said pair of second permanent magnets (22) are inclined radially inwards towards each other to cooperate with each other to form a V-shaped structure.
7. A motor rotor according to any one of claims 1-3, characterised in that the magnet steel slots (1) comprise a first magnet steel slot (11), a second magnet steel slot (12) and a third magnet steel slot (13), the first magnet steel slot (11) being intended for the insertion of the first permanent magnet (21), the second magnet steel slot (12) being intended for the insertion of the second permanent magnet (22), the third magnet steel slot (13) being intended for the insertion of the third permanent magnet (23), the third permanent magnet (23) being arranged at a position between the inner ends of the two second magnet steel slots (12), and that a magnetic separation bridge (3) is arranged between the third magnet steel slot (13) and the two second magnet steel slots (12), respectively.
8. An electric machine rotor, according to claim 1, characterized in that said first permanent magnet (21) and said second permanent magnet (22) are formed in the same structure.
9. An electrical machine comprising a stator and a rotor, the rotor being disposed within the stator and the rotor being an electrical machine rotor according to any one of claims 1 to 8.
10. An electric vehicle characterized by comprising a drive motor according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811015452.1A CN110875657A (en) | 2018-08-31 | 2018-08-31 | Motor rotor, motor and electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811015452.1A CN110875657A (en) | 2018-08-31 | 2018-08-31 | Motor rotor, motor and electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110875657A true CN110875657A (en) | 2020-03-10 |
Family
ID=69716201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811015452.1A Pending CN110875657A (en) | 2018-08-31 | 2018-08-31 | Motor rotor, motor and electric automobile |
Country Status (1)
| Country | Link |
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| CN (1) | CN110875657A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114094740A (en) * | 2020-07-31 | 2022-02-25 | 安徽威灵汽车部件有限公司 | Rotor punching sheet, rotor, motor and vehicle |
| WO2022047889A1 (en) * | 2020-09-03 | 2022-03-10 | 瑞声声学科技(深圳)有限公司 | Linear motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100079026A1 (en) * | 2008-10-01 | 2010-04-01 | Seok-Hee Han | Electric machine |
| CN103339831A (en) * | 2011-02-03 | 2013-10-02 | 丰田自动车株式会社 | Rotor for electric machine |
| CN104221261A (en) * | 2012-03-30 | 2014-12-17 | 会田工程技术有限公司 | Permanent magnet motor |
| WO2017220430A1 (en) * | 2016-06-21 | 2017-12-28 | Jaguar Land Rover Limited | Electrical machine |
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2018
- 2018-08-31 CN CN201811015452.1A patent/CN110875657A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100079026A1 (en) * | 2008-10-01 | 2010-04-01 | Seok-Hee Han | Electric machine |
| CN103339831A (en) * | 2011-02-03 | 2013-10-02 | 丰田自动车株式会社 | Rotor for electric machine |
| CN104221261A (en) * | 2012-03-30 | 2014-12-17 | 会田工程技术有限公司 | Permanent magnet motor |
| WO2017220430A1 (en) * | 2016-06-21 | 2017-12-28 | Jaguar Land Rover Limited | Electrical machine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114094740A (en) * | 2020-07-31 | 2022-02-25 | 安徽威灵汽车部件有限公司 | Rotor punching sheet, rotor, motor and vehicle |
| CN114094740B (en) * | 2020-07-31 | 2023-03-14 | 安徽威灵汽车部件有限公司 | Rotor punching sheet, rotor, motor and vehicle |
| WO2022047889A1 (en) * | 2020-09-03 | 2022-03-10 | 瑞声声学科技(深圳)有限公司 | Linear motor |
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Application publication date: 20200310 |
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