CN111181337A - Rotor assembly, assembling method thereof, motor and electric vehicle - Google Patents
Rotor assembly, assembling method thereof, motor and electric vehicle Download PDFInfo
- Publication number
- CN111181337A CN111181337A CN202010118708.2A CN202010118708A CN111181337A CN 111181337 A CN111181337 A CN 111181337A CN 202010118708 A CN202010118708 A CN 202010118708A CN 111181337 A CN111181337 A CN 111181337A
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- rotor
- disc
- limiting
- rotor disc
- magnetic
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
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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
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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
- H02K1/2793—Rotors axially facing stators
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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
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
- H02K16/02—Machines with one stator and two or more rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/03—Machines characterised by aspects of the air-gap between rotor and stator
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention provides a rotor assembly, an assembling method of the rotor assembly, a motor and an electric vehicle. Wherein, the rotor assembly includes: a rotor disk; the magnetic pieces are distributed on the rotor disc at intervals in a ring shape; the separator is at least partially positioned between any two adjacent magnetic pieces; the first limiting part extends into the annular inner side defined by the plurality of magnetic parts and is connected with the rotor disc, and the first limiting part is locally pressed on the surface of the plurality of magnetic parts, which is deviated from the rotor disc; the second limiting part extends into the annular outer side defined by the plurality of magnetic parts and is connected with the rotor disc, and the second limiting part is locally pressed on the surface of the plurality of magnetic parts, which is deviated from the rotor disc. The multi-directional limiting of the plurality of magnetic parts is realized, the installation stability of the plurality of magnetic parts is improved, the rotor assembly is simple to assemble and process, the assembly is firm, and the production cost is reduced.
Description
Technical Field
The invention belongs to the technical field of motors, and particularly relates to a rotor assembly, an assembly method of the rotor assembly, a motor and an electric vehicle.
Background
Axial permanent magnet motors (AFPMMs), also known as disk permanent magnet motors (or axial magnetic field or flux motors), have planar air gaps with axially distributed air gap fields, which are of increasing interest due to their compact structure, high efficiency, high power density, and other advantages. The AFPMM is particularly suitable for being applied to occasions requiring high torque density and compact axial space, such as electric vehicles, renewable energy systems, flywheel energy storage systems and industrial equipment. However, in the related art, the rotor assembly of the disc-type permanent magnet motor is complex in assembly, complex in processing and high in processing cost, so that the assembly and the processing of the motor are complex and the cost is increased.
Disclosure of Invention
The present invention is directed to solving one of the technical problems of the prior art or the related art.
To this end, a first aspect of the invention proposes a rotor assembly.
A second aspect of the invention provides a method of assembling a rotor assembly.
A third aspect of the invention provides an electric machine.
A fourth aspect of the invention proposes an electric vehicle.
In view of the above, according to a first aspect of the present invention, there is provided a rotor assembly comprising: a rotor disk; the magnetic pieces are distributed on the rotor disc at intervals in a ring shape; the separator is at least partially positioned between any two adjacent magnetic pieces; the first limiting part extends into the annular inner side defined by the plurality of magnetic parts and is connected with the rotor disc, and the first limiting part is locally pressed on the surface of the plurality of magnetic parts, which is deviated from the rotor disc; the second limiting part extends into the annular outer side defined by the plurality of magnetic parts and is connected with the rotor disc, and the second limiting part is locally pressed on the surface of the plurality of magnetic parts, which is deviated from the rotor disc.
The rotor assembly provided by the invention comprises a rotor disc, a plurality of magnetic parts, a separator, a first limiting part and a second limiting part. Wherein, mutually supporting through separator, first locating part and second locating part, realized diversely spacing to a plurality of magnetic parts, improved the installation firmness of a plurality of magnetic parts, avoided a plurality of magnetic parts to drop or shift from the rotor dish to guarantee the operation validity of using this rotor core's motor, and effectively reduce rotor assembly's processing step, make things convenient for rotor assembly's assembly, reduce cost. Specifically, by disposing the separator on the rotor disk, any two adjacent magnetic members of the plurality of magnetic members are disposed on the rotor disk while being separated by the separator, which facilitates the position limitation of the plurality of magnetic members. The first limiting part extends into the annular inner side surrounded by the magnetic parts and is connected with the rotor disc, radial limiting of the magnetic parts is facilitated, the radial direction of the magnetic parts is in the same direction as the radial direction of the rotor disc, the first limiting part is locally pressed on the surface, deviating from the rotor disc, of the magnetic parts, axial limiting of the magnetic parts is facilitated, and the default axial direction of the magnetic parts is the axial direction of the rotor disc. Moreover, the second limiting part extends into the annular outer side surrounded by the magnetic parts and is connected with the rotor disc, so that radial limiting of the magnetic parts is facilitated, the second limiting part is locally pressed on the surface, deviating from the rotor disc, of the magnetic parts, and axial limiting of the magnetic parts is facilitated. The multi-azimuth limiting of the magnetic pieces is realized, the installation firmness of the magnetic pieces is improved, the situation that the magnetic pieces are easy to fall off from the rotor disc due to shaking, vibration and the like in the related technology can be effectively avoided, and the situation that the viscose is invalid due to high temperature and the magnetic pieces fall off from the rotor disc due to overlarge attracted attraction and the like is also avoided.
Moreover, by integrally partitioning the plurality of magnetic members by the partitioning member, the assembling step of the partitioning member is greatly simplified as compared with the case of separately partitioning the adjacent two magnetic members by the plurality of separate partitioning members in the related art. Moreover, by subsequently installing the first limiting part and the second limiting part on the rotor disc and locally pressing the first limiting part and the second limiting part on the plurality of magnetic parts, compared with the related art in which two limiting rings are integrally formed on the rotor disc, one limiting ring is arranged around the periphery of the other limiting ring, so that the plurality of magnetic parts are installed between the two limiting rings, the processing requirements of the two limiting rings and the processing requirements of a groove formed between the two limiting rings are considered, on one hand, the processing technology of the rotor disc is greatly simplified, the limiting rings and the rotor disc are not required to be integrally formed, and the groove is not required to be formed on the rotor disc for the installation of the magnetic parts, so that the processing requirements of the two limiting rings are also considered while the processing requirements of the rotor disc are considered, on the other hand, the axial limiting of the plurality of magnetic parts is facilitated, and the installation firmness of the plurality. The rotor assembly is assembled together with the rotor disc by the aid of the two locating parts distributed on the inner side and the outer side of the ring formed by the magnetic parts, so that the rotor assembly can be assembled simply, the rotor assembly is easy to process and firm to assemble, and production cost is reduced.
In addition, according to the rotor assembly in the above technical solution provided by the present invention, the following additional technical features may also be provided:
in one possible design, the rotor disk comprises a disk body, and a plurality of magnetic members are adhered to the disk body.
In this design, the rotor disk includes a disk body, and does not include a rotor core, and in this case, a plurality of magnetic members need to be provided on the disk body. Furthermore, a plurality of magnetic pieces can be adhered to the tray body, and the installation is convenient.
In one possible embodiment, the rotor disk comprises a disk body and a rotor core, which is embedded in the disk body. Further, a plurality of magnetic members are bonded to the rotor core.
In this design for the rotor dish includes disk body and rotor core, and this moment, sets up rotor core on the disk body, and further, sets up rotor core embedding on the dish, is favorable to the firm installation of rotor core, and glues the separator and establish on rotor core, glues a plurality of magnetic part and establish on rotor core.
In one possible design, in the case of a rotor disk comprising a disk body, the partition is glued to the disk body, or the partition is welded to the disk body, or the partition is mounted on the disk body by means of a connection.
In the design, the rotor disc comprises the disc body and does not comprise the rotor iron core, and at the moment, the separator can be adhered to the disc body or welded on the disc body, so that the mounting is convenient. Of course, the partition may be fixed to the tray body by a connecting member such as a screw or a bolt.
In a possible design, in the case of a rotor disk comprising a rotor core, the separating elements are at least partially glued to the rotor core, or the separating elements are partially welded to the disk body, or the separating elements are partially mounted on the disk body by means of connecting elements.
In the design, the rotor disc comprises a disc body and a rotor core, at the moment, the rotor core can be coated with viscose, the separator is wholly or partially stuck on the rotor core, and the magnetic pieces are stuck on the rotor core according to the positions limited by the separator, so that the assembly is convenient. Or the separator is arranged to avoid the part of the rotor core and is welded on the disc body or is fixed on the disc body through a connecting piece such as a screw or a bolt.
In one possible design, the first limiting element is welded to the rotor disc, or the first limiting element is mounted on the rotor disc via a connecting element; the second limiting member is welded on the rotor disc, or the second limiting member is installed on the rotor disc through a connecting member.
In the design, the first limiting part is specifically limited to be welded on the rotor disc so as to be firmly connected, and the first limiting part can also be installed on the rotor disc through a connecting piece, such as a screw or a bolt, so that the first limiting part can be conveniently pressed on a plurality of magnetic pieces by closing the connecting piece, and the first limiting part and the rotor disc can be also favorably and firmly installed. In addition, the second limiting part can be welded on the rotor disc so as to be firmly connected with the rotor disc, and the second limiting part can be installed on the rotor disc through a connecting piece, such as a screw or a bolt, so that the second limiting part can be conveniently pressed on a plurality of magnetic pieces by closing the connecting piece, and the second limiting part can be also favorably and firmly installed with the rotor disc.
In one possible design, the divider includes: a connecting part located inside a ring surrounded by the plurality of magnetic members; and the plurality of separating parts are connected with the connecting part, and each separating part is positioned between two adjacent magnetic pieces.
In this design, the partitioning member is specifically defined to include a connecting portion and a plurality of partitioning portions, the plurality of partitioning portions are integrally connected by the connecting portion, and the partitioning of the adjacent two magnetic members by the partitioning portions is achieved by the integrated partitioning member. Compared with the prior art in which a plurality of independent separating components are adopted to separate two adjacent magnetic pieces independently, the assembling steps of the separating pieces are greatly simplified, the phenomenon that the installation position is accurately found for each independent separating component is avoided, and the position of the connecting part is only needed to be accurately found once, so that the accuracy of the installation positions of the plurality of magnetic pieces is guaranteed. Wherein, default a plurality of separating parts are annularly around the connecting portion and are equidistantly distributed.
In a possible design, a first mounting hole is formed in the first limiting member, a second mounting hole is formed in the connecting portion, and the rotor assembly further includes a connecting member extending into the rotor disc through the first mounting hole and the second mounting hole.
In the design, a first mounting hole is formed in the first limiting part, a second mounting hole is formed in the connecting part of the separating part, and then the connecting part penetrates through the first mounting hole and the second mounting hole to extend into the rotor disc, so that the first limiting part is mounted and positioned, and the separating part is limited. Wherein, the connecting piece can be a screw or a bolt, etc.
In one possible design, the first position-limiting member includes a first mounting portion and a first position-limiting ring, the first mounting portion extends into an annular inner side surrounded by the plurality of magnetic members and is connected with the rotor disc, and the first position-limiting ring is pressed on a surface of the plurality of magnetic members facing away from the rotor disc; the second limiting part comprises a second mounting part and a second limiting ring, the second mounting part extends into the annular outer side formed by the plurality of magnetic parts and is connected with the rotor disc, and the second limiting ring is locally pressed on the surface of the plurality of magnetic parts, which is deviated from the rotor disc.
In this design, specifically prescribe a limit to first locating part and include first installation department and first spacing ring, stretch into annular inboard that a plurality of magnetic parts enclose through first installation department and be connected with the rotor dish, and then realize that first locating part presses on a plurality of magnetic parts deviate from the surface of rotor dish, has realized spacing to the axial of a plurality of magnetic parts, has improved the installation fastness of a plurality of magnetic parts. The second limiting part is limited to comprise a second mounting part and a second limiting ring, the second mounting part extends into the annular outer side formed by the surrounding of the magnetic parts to be connected with the rotor disc, and therefore the second limiting part is pressed on the surface, deviating from the rotor disc, of the magnetic parts, axial limiting of the magnetic parts is achieved, and mounting firmness of the magnetic parts is improved. The situation that the magnetic pieces are easy to fall off from the rotor disc due to shaking, vibration and the like caused by only sticking the magnetic pieces on the rotor disc can be effectively avoided, and the situation that the adhesive is ineffective due to high temperature, the attractive force of the magnetic pieces is too large and the like to fall off from the rotor disc is also avoided.
In one possible design, the first mounting portion abuts a surface of the plurality of magnetic elements facing the centerline of the rotor disk; the second mounting portion abuts a surface of the plurality of magnetic elements facing away from a centerline of the rotor disk.
In the design, the first installation part is abutted to the surfaces of the magnetic parts facing to the central line of the rotor disc, namely the first installation part compresses the annular inner side surface surrounded by the magnetic parts, and the second installation part is matched with the surfaces of the magnetic parts deviating from the central line of the rotor disc to be abutted to the surfaces of the magnetic parts, namely the second installation part compresses the annular outer side surface surrounded by the magnetic parts, so that the radial limitation of the magnetic parts can be realized, and the installation firmness of the magnetic parts is further improved.
A second aspect of the present invention provides a method for assembling a rotor assembly, which is used for the rotor assembly according to any one of the above technical solutions, and the method for assembling the rotor assembly includes the following steps: gluing on a rotor disc; mounting a separator in a preset position of a rotor disc; the magnetic parts are positioned in a separated mode according to the separating pieces, so that the magnetic parts are distributed at intervals in a ring shape and are adhered to the rotor disc; the first limiting piece extends into the annular inner side surrounded by the plurality of magnetic pieces and is arranged on the rotor disc so as to press the first limiting piece on the surface of the plurality of magnetic pieces, which is far away from the rotor disc; the second limiting piece extends into the annular outer side surrounded by the plurality of magnetic pieces and is installed on the rotor disc, so that the first limiting piece is pressed on the surface, deviating from the rotor disc, of the plurality of magnetic pieces.
The rotor assembly assembling method provided by the invention realizes the accurate positioning of the magnetic parts through the separators by gluing the rotor disc, such as evenly gluing the preset area of the rotor disc, installing the separators at the preset position of the rotor disc, such as arranging the centers of the separators on the central line of the rotor disc, separating the plurality of magnetic parts according to the separators, and gluing the magnetic parts on the rotor disc through gluing the rotor disc. Then, under the condition that the magnetic parts are adhered to the rotor disc, the first limiting part is extended into the annular inner side surrounded by the plurality of magnetic parts and is pressed on the surface of the plurality of magnetic parts departing from the rotor disc, the first limiting part is connected with the rotor disc, the second limiting part is extended into the annular outer side surrounded by the plurality of magnetic parts and is pressed on the surface of the plurality of magnetic parts departing from the rotor disc, the second limiting part is connected with the rotor disc, the axial and even radial limiting of the plurality of magnetic parts by the first limiting part and the second limiting part is realized, the installation firmness of the plurality of magnetic parts is favorably improved, the condition that the plurality of magnetic parts are adhered to the rotor disc only in the related technology, the plurality of magnetic parts are easy to fall off from the rotor disc due to shaking, vibration and the like can be effectively avoided, and the failure of the adhesive due to high temperature can be avoided, and the magnetic piece is attracted by the magnetic piece, so that the magnetic piece is excessively attracted and falls off from the rotor disc, and the whole rotor assembly is firm and reliable.
Moreover, by adopting the assembling mode, the assembling is convenient and quick. Compared with the prior art that a plurality of independent separating parts are adopted to separate two adjacent magnetic pieces separately, the assembling step of the separating part is greatly simplified. Compared with the prior art in which two limiting rings are integrally formed on a rotor disc, one limiting ring is arranged around the periphery of the other limiting ring, so that a plurality of magnetic parts are arranged between the two limiting rings, the processing requirements of the two limiting rings are not only required to be considered, but also the processing requirements of a groove formed between the two limiting rings are also required to be considered, on one hand, the processing technology of the rotor disc is greatly simplified, the limiting rings and the rotor disc are not required to be integrally formed, and the groove is not required to be formed on the rotor disc for the installation of the magnetic parts, the processing requirements of the two limiting rings are also considered while the processing requirements of the rotor disc are considered, on the other hand, the axial limiting of the plurality of magnetic parts is facilitated, and the installation firmness of a plurality. The assembly cost and the processing cost are reduced.
In one possible design, the step of applying glue to the rotor disc comprises in particular: gluing the disc body of the rotor disc; or gluing the disc body of the rotor disc, adhering the rotor core on the disc body, and gluing the exposed surface of the rotor core.
In this design, in the case where the rotor disk includes the disk body without including the rotor core, the adhesive may be directly applied to the disk body so that the plurality of magnetic members are adhered to the disk body. And under the condition that the rotor disc comprises a disc body and a rotor core, the bottom of a mounting groove for accommodating the rotor core on the disc body is uniformly coated with glue, the rotor core is adhered to the disc body, and then the surface of the rotor core exposed out of the disc body is coated with the glue, so that a plurality of subsequent magnetic pieces are adhered to the rotor core.
In one possible design, the step of mounting the partition on the rotor disc comprises in particular: adhering or welding the separator to the disc body of the rotor disc; or the separator is arranged on the disk body of the rotor disk through a connecting piece; or at least part of the separator is glued to the rotor core of the rotor disc.
In this design, in the case where the rotor disk includes the disk body without including the rotor core, the partitioning member may be directly adhered to the disk body, or the partitioning member may be welded to the disk body, or the partitioning member may be fixed to the disk body by a connecting member such as a screw or a bolt. In the case where the rotor disk includes the disk body and the rotor core, at least a part of the partitioning member, such as the partitioning portion, may be adhered to the rotor core, or a part of the partitioning member, such as the connecting portion, may be avoided from the rotor core, such as the connecting portion, may be welded to the disk body or fixed to the disk body by a connecting member. A secure connection of the separator and the rotor disc is achieved.
In one possible design, the step of inserting the first limiting member into the annular inner side surrounded by the plurality of magnetic members and mounting the first limiting member on the rotor disc specifically includes: and welding the first limiting member on the rotor disc, or mounting the first limiting member on the rotor disc through a connecting member.
In this design, the first limiting member is welded to the rotor disc or the first limiting member is mounted to the rotor disc through a connecting member, such as a screw or a bolt, so that the first limiting member and the rotor disc are securely mounted, and stable mounting of the plurality of magnetic members is ensured. Further, the first limiting member is welded to the disk body of the rotor disk, or the first limiting member is mounted to the disk body of the rotor disk through a connecting member.
In one possible design, the step of inserting the second limiting member into the outer side of the ring shape surrounded by the plurality of magnetic members and mounting the second limiting member on the rotor disc specifically includes: and welding the second limiting member on the rotor disc, or mounting the second limiting member on the rotor disc through a connecting member.
In this design, the second limiting member is welded to the rotor disc or is mounted to the rotor disc through a connecting member, such as a screw or a bolt, so that the second limiting member is securely mounted to the rotor disc, and the plurality of magnetic members are stably mounted. Further, the second limiting member is welded to the disk body of the rotor disk, or the second limiting member is mounted to the disk body of the rotor disk through a connecting member.
A third aspect of the invention proposes an electric machine comprising: a stator assembly; and a rotor assembly as in any one of the previous claims.
The motor provided by the invention has the beneficial effects of any one of the above technical schemes due to the rotor assembly of any one of the above technical schemes, which is described in detail herein.
Furthermore, the number of the rotor assemblies is two, and the two rotor assemblies are respectively positioned at two sides of the stator assembly in the axial direction. One stator assembly is matched with the two rotor assemblies; or the number of the rotor assemblies is one, the rotor assemblies are positioned on one axial side of the stator assemblies, and one stator assembly is matched with one rotor assembly.
A fourth aspect of the invention proposes an electric vehicle including: the motor according to any one of the above aspects.
The electric vehicle provided by the invention has the advantages of any one of the above technical solutions due to the motor of any one of the above technical solutions, which is described in detail herein.
Further, the electric vehicle includes a vehicle body, a battery, wheels, a brake system, a refrigeration system, and the like. The motor can be applied to a braking system and also can be applied to a refrigerating system.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 shows an exploded view of a rotor core of one embodiment of the present invention;
FIG. 2 illustrates a process flow diagram of an assembly method of assembly of a rotor core of an embodiment of the present invention;
fig. 3 shows a process flow diagram of an assembly method of assembly of a rotor core of another embodiment of the present invention.
Wherein, the corresponding relation between the reference numbers and the part names in fig. 1 is:
the rotor comprises a 110 rotor disc, a 1101 disc body, a 1102 rotor core, 120 magnetic elements, 130 separators, 1301 connecting parts, 1302 separators, 140 first stoppers and 150 second stoppers.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
A rotor assembly according to some embodiments of the present invention is described below with reference to fig. 1-3.
The first embodiment is as follows:
as shown in fig. 1, a rotor assembly includes: a rotor disk 110; a plurality of magnetic members 120, the plurality of magnetic members 120 being annularly distributed on the rotor disc 110 at intervals; a separator 130 at least partially positioned between any adjacent two of the magnetic members 120; the first limiting member 140 extends into the annular inner side surrounded by the plurality of magnetic members 120 and is connected to the rotor disc 110, and the first limiting member 140 partially presses on a surface of the plurality of magnetic members 120 facing away from the rotor disc 110; the second limiting member 150 extends into an outer side of the ring shape defined by the plurality of magnetic members 120 and is connected to the rotor disc 110, and the second limiting member 150 partially presses on a surface of the plurality of magnetic members 120 facing away from the rotor disc 110.
The rotor assembly of the present invention includes a rotor disc 110, a plurality of magnetic members 120, a spacer 130, a first limiting member 140 and a second limiting member 150. The separator 130, the first limiting part 140 and the second limiting part 150 are matched with each other, so that multi-directional limitation of the plurality of magnetic parts 120 is realized, the installation firmness of the plurality of magnetic parts 120 is improved, the plurality of magnetic parts 120 are prevented from falling off or shifting from the rotor disc 110, the operation effectiveness of the motor using the rotor core 1102 is guaranteed, the processing steps of the rotor assembly are effectively reduced, the assembly of the rotor assembly is facilitated, and the cost is reduced. Specifically, by disposing the separator 130 on the rotor disk 110, any adjacent two magnetic members 120 of the plurality of magnetic members 120 are disposed on the rotor disk 110 separated by the separator 130, which facilitates the spacing of the plurality of magnetic members 120. The first limiting member 140 extends into the annular inner side surrounded by the plurality of magnetic members 120 to be connected to the rotor disc 110, so as to facilitate radial limiting of the plurality of magnetic members 120, where the radial direction of the plurality of magnetic members 120 is the same as the radial direction of the rotor disc 110, and the first limiting member 140 is partially pressed on the surface of the plurality of magnetic members 120 facing away from the rotor disc 110, so as to facilitate axial limiting of the plurality of magnetic members 120, where the default is the axial direction of the plurality of magnetic members 120, i.e. the axial direction of the rotor disc 110. Moreover, the second limiting member 150 extends into the annular outer side surrounded by the plurality of magnetic members 120 to be connected to the rotor disc 110, so as to facilitate radial limiting of the plurality of magnetic members 120, and the second limiting member 150 is partially pressed on the surface of the plurality of magnetic members 120 away from the rotor disc 110, so as to facilitate axial limiting of the plurality of magnetic members 120. The multi-directional limitation of the plurality of magnetic members 120 is realized, the installation firmness of the plurality of magnetic members 120 is further improved, the situation that the plurality of magnetic members 120 are easy to fall off from the rotor disc 110 due to shaking, vibration and the like in the related art can be effectively avoided, and the situation that the viscose is ineffective due to high temperature and the magnetic members 120 fall off from the rotor disc 110 due to overlarge attracted attraction force and the like can be avoided.
Moreover, by integrally partitioning the plurality of magnetic members 120 by the partition 130, the assembly step of the partition 130 is greatly simplified as compared with the related art in which two adjacent magnetic members 120 are separately partitioned by a plurality of independent partition members. Moreover, by subsequently installing the first limiting member 140 and the second limiting member 150 on the rotor disc 110 and partially pressing on the plurality of magnetic members 120, compared with the related art in which two limiting rings are integrally formed on the rotor disc 110 and one limiting ring surrounds the periphery of the other limiting ring, the plurality of magnetic members 120 are installed between the two limiting rings, which not only needs to consider the processing requirements of the two limiting rings, but also needs to consider the processing requirements of the groove formed between the two limiting rings, on one hand, the processing process of the rotor disc 110 is greatly simplified, the limiting rings are not required to be integrally formed with the rotor disc 110, the groove is not required to be formed on the rotor disc 110 for the installation of the magnetic members 120, and the problems of the screw and the magnet are not required to be considered, the processing requirements of the two limiting rings are also considered while the processing requirements of the rotor disc 110 are not required, on the other hand, the axial limiting of the plurality of magnetic members 120 is, the installation firmness of a plurality of locating parts is improved. That is, the split design of the rotor disc 110, the first limiting member 140 and the second limiting member 150 not only realizes the fixation of the plurality of magnetic members 120, but also simplifies the assembly and processing process. In addition, the whole assembly process of the rotor assembly is realized by arranging the separator 130 on the rotor disc 110, arranging the plurality of magnetic members 120 according to the positioning of the separator 130, and distributing the two limit members on the inner side and the outer side of the ring surrounded by the plurality of magnetic members 120 to be assembled with the rotor disc 110, so that the assembly of the rotor assembly can be completed, the assembly of the rotor assembly is simple, the processing is simple, the assembly is firm, and the production cost is reduced.
Example two:
on the basis of the first embodiment, it is further defined that the rotor disk 110 includes a disk body 1101, and the plurality of magnetic members 120 are adhered to the disk body 1101.
In this embodiment, the rotor disk 110 includes the disk body 1101, and does not include the rotor core 1102, and at this time, it is necessary to dispose the plurality of magnetic members 120 on the disk body 1101. Further, a plurality of magnetic members 120 can be adhered to the tray 1101, so that the installation is convenient.
Further, the separator 130 is adhered to the tray body 1101, or the separator 130 is welded to the tray body 1101. The installation is convenient. Of course, the partition 130 may be fixed to the tray 1101 by a connecting member such as a screw or a bolt.
Example three:
on the basis of the first embodiment, as shown in fig. 1, the rotor disk 110 is further defined to include a disk body 1101 and a rotor core 1102, and the rotor core 1102 is embedded on the disk body 1101. The plurality of magnetic members 120 are adhered to the rotor core 1102.
In this embodiment, the rotor disk 110 includes a disk body 1101 and a rotor core 1102, and at this time, the rotor core 1102 is disposed on the disk body 1101, and further, the rotor core 1102 is disposed embedded in the disk, which facilitates the firm installation of the rotor core 1102, and the separator 130 is bonded to the rotor core 1102, and the plurality of magnetic members 120 is bonded to the rotor core 1102.
Further, the separator 130 is at least partially adhered to the rotor core 1102. Specifically, the adhesive may be applied on the rotor core 1102, and the separator 130 may be fully or partially adhered to the rotor core 1102, for example, the separator 1302 may be adhered to the rotor core 1102, and the plurality of magnetic members 120 may be adhered to the rotor core 1102 according to the positions defined by the separator 130, so that the assembly is convenient.
Or further, the part of the separator 130 avoiding the rotor core 1102 is adhered to the disc 1101 or welded to the disc 1101 or fixed to the disc 1101 by a connector.
Example four:
on the basis of any of the above embodiments, it is further limited that the first limiting member 140 is welded to the rotor disc 110, or the first limiting member 140 is mounted on the rotor disc 110 through a connecting member; the second limiting member 150 is welded to the rotor disc 110, or the second limiting member 150 is mounted on the rotor disc 110 through a connecting member.
In this embodiment, it is specifically limited that the first limiting member 140 is welded on the rotor disc 110, so that the first limiting member 140 and the rotor disc 110 are firmly connected, and the first limiting member 140 can also be installed on the rotor disc 110 through a connecting member, such as a screw or a bolt, so as to facilitate the first limiting member 140 to press the plurality of magnetic members 120 by fastening the connecting member, and also facilitate the first limiting member 140 and the rotor disc 110 to be firmly installed. In addition, the second limiting member 150 can be welded to the rotor disc 110 to enable the two members to be firmly connected, or the second limiting member 150 can be installed on the rotor disc 110 by a connecting member, such as a screw or a bolt, so that the second limiting member 150 can be conveniently pressed against the plurality of magnetic members 120 by fastening the connecting member, and the second limiting member 150 can be advantageously and firmly installed on the rotor disc 110.
Example five:
on the basis of any of the above embodiments, as shown in fig. 1, the partition 130 is further defined to include: a connection portion 1301 positioned inside an annular shape surrounded by the plurality of magnetic members 120; and a plurality of partition portions 1302, each of the plurality of partition portions 1302 being connected to the connection portion 1301, each of the plurality of partition portions 1302 being located between two adjacent magnetic members 120.
In this embodiment, the partition 130 is specifically defined to include a connection portion 1301 and a plurality of partition portions 1302, the plurality of partition portions 1302 are integrally connected by the connection portion 1301, and two adjacent magnetic members 120 are separated by the partition portions 1302, so that all the magnetic members 120 are separated by the integral partition 130. Compared with the prior art that a plurality of independent separating components are adopted to separate two adjacent magnetic pieces 120 independently, the assembling steps of the separating piece 130 are greatly simplified, the aim of finding the mounting position for each independent separating component is avoided, and the position of the connecting part 1301 only needs to be found once, so that the accuracy of the mounting positions of the plurality of magnetic pieces 120 is favorably ensured. The default plurality of partitions 1302 are annularly and equally spaced around the connection portion 1301.
Further, the first limiting member 140 is provided with a first mounting hole, the connecting portion 1301 is provided with a second mounting hole, and the rotor assembly further includes a connecting member, which passes through the first mounting hole and the second mounting hole and extends into the rotor disc 110. Specifically, a first mounting hole is formed in the first limiting member 140, a second mounting hole is formed in the connecting portion 1301 of the separating member 130, and a connecting member passes through the first mounting hole and the second mounting hole and extends into the rotor disc 110, so that the first limiting member 140 is mounted and positioned, and the separating member 130 is also limited. Wherein, the connecting piece can be a screw or a bolt, etc.
Example six:
in addition to any of the above embodiments, the first limiting member 140 further includes a first mounting portion (not shown) and a first limiting ring (not shown), the first mounting portion extends into an inner side of the ring shape surrounded by the plurality of magnetic members 120 and is connected to the rotor disc 110, and the first limiting ring is pressed on a surface of the plurality of magnetic members 120 facing away from the rotor disc 110; the second position-limiting member 150 includes a second mounting portion (not shown) and a second position-limiting ring (not shown), the second mounting portion extends into the annular outer side surrounded by the plurality of magnetic members 120 and is connected to the rotor disc 110, and the second position-limiting ring partially presses on a surface of the plurality of magnetic members 120 away from the rotor disc 110.
In this embodiment, the first limiting member 140 specifically includes a first mounting portion and a first limiting ring, and the first mounting portion extends into the annular inner side surrounded by the plurality of magnetic members 120 to be connected to the rotor disc 110, so that the first limiting member 140 is pressed on the surface of the plurality of magnetic members 120 departing from the rotor disc 110, thereby achieving axial limiting of the plurality of magnetic members 120, and improving the mounting firmness of the plurality of magnetic members 120. The second limiting member 150 is limited to include a second mounting portion and a second limiting ring, and the second mounting portion extends into the annular outer side surrounded by the plurality of magnetic members 120 to be connected with the rotor disc 110, so that the second limiting member 150 is pressed on the surface of the plurality of magnetic members 120 departing from the rotor disc 110, the axial limitation of the plurality of magnetic members 120 is realized, and the mounting firmness of the plurality of magnetic members 120 is improved. The situation that the plurality of magnetic members 120 are easily separated from the rotor disc 110 due to shaking, vibration and the like caused by only sticking the plurality of magnetic members 120 on the rotor disc 110 can be effectively avoided, and the situation that the adhesive is separated from the rotor disc 110 due to high-temperature failure, overlarge attraction force of the magnetic members 120 and the like can also be avoided.
Further, the first mounting portion abuts a surface of the plurality of magnetic pieces 120 facing the centerline of the rotor disk 110; the second mounting portion abuts a surface of the plurality of magnetic members 120 facing away from the centerline of the rotor disk 110.
By making the first mounting portion abut against the surfaces of the plurality of magnetic members 120 facing the center line of the rotor disk 110, that is, the first mounting portion presses the annular inner side surface surrounded by the plurality of magnetic members 120, and by matching the second mounting portion to abut against the surfaces of the plurality of magnetic members 120 away from the center line of the rotor disk 110, that is, the second mounting portion presses the annular outer side surface surrounded by the plurality of magnetic members 120, the radial limitation of the plurality of magnetic members 120 can be realized, and the mounting firmness of the plurality of magnetic members 120 is further improved.
Hereinafter, a rotor assembly according to an embodiment of the present invention will be described in detail.
The rotor assembly includes the rotor disc 110, a rotor core 1102 (optional) and magnets (one of the magnetic members 120), and the rotor core 1102 is embedded in the annular groove of the rotor disc 110 and bonded (or otherwise) to the rotor disc 110. The separator 130 is fixed to the rotor core 1102 or the rotor disc 110 by welding or gluing. The magnets are glued to the rotor core 1102 or the rotor disc 110 by the positioning of the spacer 130. Meanwhile, the first limiting member 140 and the second limiting member 150 are used to compress all the magnets, and the two limiting members are fixed on the rotor disc 110 by welding or other methods (such as screw fastening) to realize the compression and fastening of all the magnets, so that the rotor core 1102, the separating member 130 and the magnets can be firmly fixed, and the magnets can be prevented from falling off due to high-temperature adhesive failure or excessive attraction force. Specifically, the rotor core 1102 is a toroidal core wound from a silicon steel plate.
Example seven:
a method of assembling a rotor assembly for use in a rotor assembly as claimed in any one of the preceding claims. As shown in fig. 2, the method for assembling a rotor assembly according to an embodiment of the present invention includes the steps of:
step 202: gluing on a rotor disc;
step 204: mounting a separator in a preset position of a rotor disc;
step 206: the magnetic parts are positioned in a separated mode according to the separating pieces, so that the magnetic parts are distributed at intervals in a ring shape and are adhered to the rotor disc;
step 208: the first limiting piece extends into the annular inner side surrounded by the plurality of magnetic pieces and is arranged on the rotor disc so as to press the first limiting piece on the surface of the plurality of magnetic pieces, which is far away from the rotor disc;
step 210: and the second limiting part extends into the annular outer side surrounded by the plurality of magnetic parts and is arranged on the rotor disc so as to press the second limiting part on the surface of the plurality of magnetic parts, which is deviated from the rotor disc.
The rotor assembly assembling method provided by the invention realizes the accurate positioning of the magnetic parts through the separators by gluing the rotor disc, such as evenly gluing the preset area of the rotor disc, installing the separators at the preset position of the rotor disc, such as arranging the centers of the separators on the central line of the rotor disc, separating the plurality of magnetic parts according to the separators, and gluing the magnetic parts on the rotor disc through gluing the rotor disc. Then, under the condition that the magnetic parts are adhered to the rotor disc, the first limiting part is extended into the annular inner side surrounded by the plurality of magnetic parts and is pressed on the surface of the plurality of magnetic parts departing from the rotor disc, the first limiting part is connected with the rotor disc, the second limiting part is extended into the annular outer side surrounded by the plurality of magnetic parts and is pressed on the surface of the plurality of magnetic parts departing from the rotor disc, the second limiting part is connected with the rotor disc, the axial and even radial limiting of the plurality of magnetic parts by the first limiting part and the second limiting part is realized, the installation firmness of the plurality of magnetic parts is favorably improved, the condition that the plurality of magnetic parts are adhered to the rotor disc only in the related technology, the plurality of magnetic parts are easy to fall off from the rotor disc due to shaking, vibration and the like can be effectively avoided, and the failure of the adhesive due to high temperature can be avoided, and the magnetic piece is attracted by the magnetic piece, so that the magnetic piece is excessively attracted and falls off from the rotor disc, and the whole rotor assembly is firm and reliable.
Moreover, by adopting the assembling mode, the assembling is convenient and quick. Compared with the prior art that a plurality of independent separating parts are adopted to separate two adjacent magnetic pieces separately, the assembling step of the separating part is greatly simplified. Compared with the prior art in which two limiting rings are integrally formed on a rotor disc, one limiting ring is arranged around the periphery of the other limiting ring, so that a plurality of magnetic parts are arranged between the two limiting rings, the processing requirements of the two limiting rings are not only required to be considered, but also the processing requirements of a groove formed between the two limiting rings are also required to be considered, on one hand, the processing technology of the rotor disc is greatly simplified, the limiting rings and the rotor disc are not required to be integrally formed, and the groove is not required to be formed on the rotor disc for the installation of the magnetic parts, the processing requirements of the two limiting rings are also considered while the processing requirements of the rotor disc are considered, on the other hand, the axial limiting of the plurality of magnetic parts is facilitated, and the installation firmness of a plurality. The assembly cost and the processing cost are reduced.
In a specific embodiment, step 202 specifically includes: glue is applied to the body of the rotor disc.
In this embodiment, in the case where the rotor disk includes the disk body without including the rotor core, the adhesive may be directly applied to the disk body so that the plurality of magnetic members are adhered to the disk body.
Further, step 204 specifically includes: the separator is pasted or welded to the body of the rotor disk, or the separator is mounted on the body of the rotor disk by a connecting member. A secure connection of the separator and the rotor disc is achieved.
In another specific embodiment, step 202 specifically includes: and gluing the disc body of the rotor disc, adhering the rotor core to the disc body, and gluing the exposed surface of the rotor core.
In this embodiment, in the case that the rotor disc includes the disc body and the rotor core, the glue may be uniformly applied to the bottom of the mounting groove for receiving the rotor core on the disc body, the rotor core is adhered to the disc body, and then the glue is applied to the surface of the rotor core exposed out of the disc body, so that the plurality of subsequent magnetic members are adhered to the rotor core.
Further, step 204 specifically includes: at least part of the separator is adhered to the rotor core of the rotor disc, such as the separator is adhered to the rotor core, or part of the separator avoiding the rotor core, such as the connecting part is welded on the disc body or fixed on the disc body through the connecting part. A secure connection of the separator and the rotor disc is achieved.
In a specific embodiment, step 208 specifically includes: the first limiting piece is inserted into the annular inner side surrounded by the plurality of magnetic pieces and welded on the rotor disc, or the first limiting piece is installed on the rotor disc through a connecting piece, so that the first limiting piece is pressed on the surface of the plurality of magnetic pieces, which is far away from the rotor disc.
In this embodiment, the first limiting member is welded to the rotor disc or is mounted on the rotor disc through a connecting member, such as a screw or a bolt, so that the first limiting member is securely mounted on the rotor disc, and thus the plurality of magnetic members are stably mounted.
Further, the first limiting member is welded to the disk body of the rotor disk, or the first limiting member is mounted to the disk body of the rotor disk through a connecting member.
In a specific embodiment, step 210 specifically includes: and extending the second limiting piece into the annular outer side surrounded by the plurality of magnetic pieces, and welding the second limiting piece on the rotor disc, or installing the second limiting piece on the rotor disc through a connecting piece so as to press the second limiting piece on the surface of the plurality of magnetic pieces, which is far away from the rotor disc.
In this embodiment, the second limiting member is welded to the rotor disc or is mounted on the rotor disc through a connecting member, such as a screw or a bolt, so that the second limiting member is securely mounted on the rotor disc, and thus the plurality of magnetic members are stably mounted.
Further, the second limiting member is welded to the disk body of the rotor disk, or the second limiting member is mounted to the disk body of the rotor disk through a connecting member.
Referring now to fig. 3, a method of assembling a rotor assembly according to an embodiment of the present invention is described in detail, including the steps of:
step 302: uniformly coating glue on the plane of the disc body of the rotor disc;
step 304: assembling the rotor core to the disc body;
step 306: uniformly coating glue on the exposed surface of the rotor core;
step 308: assembling the separator to the rotor core on a position-by-position basis (i.e., mounting the separator at a predetermined position of the rotor disk);
step 310: positioning a plurality of magnets (one type of magnetic member) through a spacer, and then adhering the magnets to a rotor core by using glue;
step 312: the first limiting member and the second limiting member are assembled on the rotor disc and fixed on the rotor disc by welding (e.g., laser welding) or other fixing methods (e.g., screw fastening). And the axial fixation of all the magnets is realized.
In this embodiment, realized the accurate location to magnet through the separator, when magnet has sticky fixed, reuse first locating part and second locating part are fixed all magnets, have realized the firm fixed of rotor core, separator and magnet, prevent that magnet from taking place to drop because of high temperature gluing inefficacy or appeal is too big. Low cost and firm and reliable fixation.
Example eight:
an electric machine comprising: a stator assembly; and a rotor assembly as in any one of the previous embodiments. The motor provided by the present invention has the rotor assembly according to any one of the above embodiments, and further has the beneficial effects according to any one of the above embodiments, which are described in detail herein.
Furthermore, the number of the rotor assemblies is two, and the two rotor assemblies are respectively positioned at two sides of the stator assembly in the axial direction. One stator assembly is matched with two rotor assemblies, and N/S poles of the magnetic parts 120 on the two rotor assemblies are distributed in pairs in the axial direction of the stator assembly; or the number of the rotor assemblies is one, the rotor assemblies are positioned on one axial side of the stator assemblies, and one stator assembly is matched with one rotor assembly.
Example nine:
an electric vehicle comprising: an electrical machine as claimed in any one of the preceding embodiments. The electric vehicle provided by the invention has the advantages of any one of the embodiments as described above due to the motor provided by any one of the embodiments, which is described in detail herein.
Further, the electric vehicle includes a vehicle body, a battery, wheels, a brake system, a refrigeration system, and the like. The motor can be applied to a braking system and also can be applied to a refrigerating system.
In the present invention, the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (15)
1. A rotor assembly, comprising:
a rotor disk;
a plurality of magnetic members annularly and intermittently distributed on the rotor disc;
a separator at least partially located between any two adjacent magnetic members;
the first limiting part extends into the annular inner side surrounded by the plurality of magnetic parts and is connected with the rotor disc, and the first limiting part is partially pressed on the surface of the plurality of magnetic parts, which is deviated from the rotor disc;
and the second limiting part extends into the annular outer side surrounded by the plurality of magnetic parts and is connected with the rotor disc, and the second limiting part is locally pressed on the surface of the plurality of magnetic parts, which is deviated from the rotor disc.
2. The rotor assembly of claim 1,
the rotor disc comprises a disc body, and the plurality of magnetic pieces are adhered to the disc body; or
The rotor disc comprises a disc body and a rotor core, the rotor core is embedded in the disc body, and the plurality of magnetic pieces are adhered to the rotor core.
3. The rotor assembly of claim 2,
in the case that the rotor disc comprises the disc body, the separator is adhered to the disc body, or the separator is welded to the disc body, or the separator is mounted on the disc body through a connecting piece;
in the case that the rotor disk includes the rotor core, the partitioning member is at least partially stuck to the rotor core, or the partitioning member is partially welded to the disk body, or the partitioning member is partially mounted on the disk body by a connecting member.
4. A rotor assembly according to any of claims 1 to 3,
the first limiting member is welded on the rotor disc, or the first limiting member is installed on the rotor disc through a connecting member;
the second limiting member is welded to the rotor disc, or the second limiting member is mounted on the rotor disc through a connecting member.
5. A rotor assembly according to any one of claims 1 to 3, wherein the spacer comprises:
a connecting part located inside an annular shape surrounded by the plurality of magnetic members; and
the plurality of separating parts are connected with the connecting part, and each separating part is positioned between two adjacent magnetic pieces.
6. The rotor assembly of claim 5,
the rotor assembly further comprises a connecting piece, and the connecting piece penetrates through the first mounting hole and the second mounting hole to extend into the rotor disc.
7. A rotor assembly according to any of claims 1 to 3,
the first limiting part comprises a first mounting part and a first limiting ring, the first mounting part extends into the annular inner side surrounded by the plurality of magnetic parts and is connected with the rotor disc, and the first limiting ring is pressed on the surface of the plurality of magnetic parts departing from the rotor disc;
the second limiting part comprises a second mounting part and a second limiting ring, the second mounting part extends into the annular outer side surrounded by the magnetic parts and is connected with the rotor disc, and the second limiting ring is locally pressed on the surface of the magnetic parts departing from the rotor disc.
8. The rotor assembly of claim 7,
the first mounting portion abuts a surface of the plurality of magnetic members facing a centerline of the rotor disk;
the second mounting portion abuts a surface of the plurality of magnetic members facing away from a centerline of the rotor disk.
9. A method of assembling a rotor assembly for a rotor assembly according to any one of claims 1 to 8, comprising the steps of:
gluing on a rotor disc;
mounting a separator in a preset position of the rotor disc;
the magnetic pieces are positioned in a separated mode according to the separating pieces, so that the magnetic pieces are distributed at intervals in a ring shape and are adhered to the rotor disc;
a first limiting piece extends into the annular inner side surrounded by the plurality of magnetic pieces and is installed on the rotor disc, so that the first limiting piece is pressed on the surface, deviating from the rotor disc, of the plurality of magnetic pieces;
and extending a second limiting piece into the annular outer side surrounded by the plurality of magnetic pieces, and installing the second limiting piece on the rotor disc so as to press the first limiting piece on the surface of the plurality of magnetic pieces departing from the rotor disc.
10. A method of assembling a rotor assembly according to claim 9, wherein the step of applying glue to the rotor discs comprises in particular:
gluing the disc body of the rotor disc; or
And gluing the disc body of the rotor disc, adhering the rotor core to the disc body, and gluing the exposed surface of the rotor core.
11. Method for assembling a rotor assembly according to claim 9, wherein said step of mounting the partition on the rotor disc comprises in particular:
adhering or welding the separator to a disc body of the rotor disc; or
Mounting the partition on a disk body of the rotor disk by a connection member; or
And adhering at least part of the separator to the rotor core of the rotor disc.
12. The method of assembling a rotor assembly according to claim 9, wherein the step of inserting the first retaining member into the inside of the ring shape surrounded by the plurality of magnetic members and mounting the first retaining member on the rotor disc specifically includes:
and welding the first limiting member on the rotor disc, or mounting the first limiting member on the rotor disc through a connecting member.
13. The method of assembling a rotor assembly according to claim 9, wherein the step of inserting a second retaining member into an outer side of the ring shape surrounded by the plurality of magnetic members and mounting the second retaining member on the rotor disc specifically includes:
and welding the second limiting member on the rotor disc, or mounting the second limiting member on the rotor disc through a connecting member.
14. An electric machine, comprising:
a stator assembly; and
a rotor assembly as claimed in any one of claims 1 to 8.
15. An electric vehicle, characterized by comprising:
the electric machine of claim 14.
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| CN202010118708.2A CN111181337B (en) | 2020-02-26 | 2020-02-26 | Rotor assembly, assembling method thereof, motor and electric vehicle |
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| CN202010118708.2A CN111181337B (en) | 2020-02-26 | 2020-02-26 | Rotor assembly, assembling method thereof, motor and electric vehicle |
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| CN113394926A (en) * | 2021-07-01 | 2021-09-14 | 浙江盘毂动力科技有限公司 | Rotor, and apparatus and method for manufacturing the same |
| CN113612358A (en) * | 2021-08-05 | 2021-11-05 | 浙江盘毂动力科技有限公司 | Forming method of disc type motor rotor |
| CN113612326A (en) * | 2021-08-05 | 2021-11-05 | 浙江盘毂动力科技有限公司 | Double-air-gap motor rotor structure |
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