CN114844262A - Half magnetic bridge PMSM rotor, motor and vehicle - Google Patents

Half magnetic bridge PMSM rotor, motor and vehicle Download PDF

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Publication number
CN114844262A
CN114844262A CN202210585498.7A CN202210585498A CN114844262A CN 114844262 A CN114844262 A CN 114844262A CN 202210585498 A CN202210585498 A CN 202210585498A CN 114844262 A CN114844262 A CN 114844262A
Authority
CN
China
Prior art keywords
rotor
permanent magnet
stator
magnetic
bridge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210585498.7A
Other languages
Chinese (zh)
Inventor
郭守仑
林展汐
王斯博
赵慧超
王宇
柴之龙
尹相睿
苍衍
李佩
齐红阳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FAW Group Corp
Original Assignee
FAW Group Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by FAW Group Corp filed Critical FAW Group Corp
Priority to CN202210585498.7A priority Critical patent/CN114844262A/en
Publication of CN114844262A publication Critical patent/CN114844262A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/16—Stator cores with slots for windings
    • H02K1/165—Shape, form or location of the slots
    • 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
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • 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)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

The invention relates to the technical field of vehicles, and particularly discloses a semi-magnetic bridge permanent magnet synchronous motor rotor, a motor and a vehicle. According to the semi-magnetic bridge permanent magnet synchronous motor rotor provided by the invention, the grooves which are inwards concavely arranged on the edges of the rotor iron core are arranged on the two sides of the second magnetic pole pair to replace the traditional rotor magnetic isolation bridge arranged at the excircle of the rotor iron core, so that the magnetic leakage of the permanent magnet can be greatly reduced, the power factor is improved, the utilization rate of the permanent magnet is improved, the cost of the motor is reduced, the salient pole ratio can be increased, the reluctance torque is improved, and the output capacity of the motor is improved; set up rotor magnetic isolation bridge between two permanent magnets of first magnetic pole pair, set up rotor magnetic isolation bridge between two permanent magnets of second magnetic pole pair, set up rotor magnetic isolation bridge between recess and second magnetic pole pair, the permanent magnet location of being convenient for to with the cooperation of rotor sheath, guarantee rotor core's structural strength, satisfy vehicle driving motor's high rotational speed demand.

Description

Half magnetic bridge permanent magnet synchronous motor rotor, motor and vehicle
Technical Field
The invention relates to the technical field of vehicles, in particular to a semi-magnetic bridge permanent magnet synchronous motor rotor, a motor and a vehicle.
Background
With the continuous improvement of living standard, the demand of people for automobiles is gradually increased, and new energy automobiles become an important development direction of the automobile industry for saving energy and protecting the environment. The motor is used as the heart of a new energy automobile, and in order to further improve the power density of the new energy automobile, the existing permanent magnet synchronous motor for the automobile mostly adopts a multilayer permanent magnet rotor, and the requirement on the rotating speed is higher and higher.
The high-speed challenge that forms to traditional motor design, when the centrifugal force that produces when the motor rotates at a high speed was used in motor rotor iron core, probably resulted in the magnetism bridge that separates of rotor excircle department to produce deformation, slight deformation can make motor magnetic field density distribution change, influences the performance, and serious deformation can cause motor rotor to sweep the thorax, damages the motor. Therefore, when the motor rotates at a high speed, the magnetic isolation bridge is required to be as wide as possible, the magnetic leakage is increased due to the wide magnetic isolation bridge, the power factor of the motor is reduced, the utilization rate of the permanent magnet is low, and the cost is increased. If in order to improve the air gap flux density of the motor and increase the reluctance torque, the permanent magnet is thicker when the motor rotor is designed, so that the magnetic isolation bridge at the excircle part of the rotor is as narrow as possible, and although the magnetic leakage can be reduced, the permanent magnet is subjected to a large centrifugal force when the motor rotates at a high speed, and the magnetic isolation bridge at the excircle part of the rotor is possibly deformed.
Therefore, it is desirable to provide a half-bridge permanent magnet synchronous motor rotor to solve the above technical problems.
Disclosure of Invention
The invention aims to provide a half-magnetic bridge permanent magnet synchronous motor rotor, a motor and a vehicle, which solve the problems of low power factor and low salient pole ratio caused by high magnetic leakage of the existing permanent magnet synchronous motor rotor, and further cause small reluctance torque, improve the utilization rate of permanent magnets and reduce cost.
In order to achieve the purpose, the invention adopts the following technical scheme:
provided is a half magnetic bridge permanent magnet synchronous motor rotor, including:
the rotor core is provided with a plurality of pairs of rotor magnetic poles along the circumferential direction, each pair of rotor magnetic poles comprises at least one first magnetic pole pair and at least one second magnetic pole pair which are arranged inwards from the outer edge of the rotor core, rotor magnetic isolation bridges are respectively arranged between two permanent magnets of the first magnetic pole pair and between two permanent magnets of the second magnetic pole pair, grooves which are inwards recessed from the outer edge of the rotor core are respectively arranged on two sides of the second magnetic pole pair, and a rotor magnetic isolation bridge is arranged between each groove and the second magnetic pole pair;
and the rotor sheath is sleeved outside the rotor core.
According to an optional technical scheme of the rotor of the half-magnetic bridge permanent magnet synchronous motor, two first permanent magnet grooves are arranged on the rotor core at intervals, permanent magnets of the first magnetic pole pair are arranged in the first permanent magnet grooves, and one end of each first permanent magnet groove penetrates through the edge of the rotor core;
and two second permanent magnet grooves which are arranged at intervals are formed in the rotor core, and permanent magnets of a second magnetic pole pair are arranged in the second permanent magnet grooves.
According to an optional technical scheme of the semi-magnetic bridge permanent magnet synchronous motor rotor, structural glue is coated on the magnetizing surfaces of the permanent magnets of the first magnetic pole pair and the inner surface of the first permanent magnet groove;
and structural glue is coated on the magnetizing surface of the permanent magnet of the second magnetic pole pair and the inner surface of the second permanent magnet groove.
According to an optional technical scheme of the semi-magnetic bridge permanent magnet synchronous motor rotor, the width of the rotor magnetic isolation bridge is matched with the thickness of the rotor sheath.
According to an optional technical scheme of the semi-magnetic bridge permanent magnet synchronous motor rotor, the rotor sheath is made of carbon fiber or alloy material.
The motor comprises a stator and the rotor of the half-magnetic bridge permanent magnet synchronous motor, wherein the stator surrounds the outer side of the rotor of the half-magnetic bridge permanent magnet synchronous motor.
According to an optional technical scheme of the motor, the stator comprises a stator core, stator slots are formed in the stator core, and stator windings are arranged in the stator slots.
According to an optional technical scheme of the motor, a stator yoke oil duct is circumferentially arranged on an outer ring of the stator core, and the number of the stator yoke oil ducts is the same as that of the stator slots;
the inner ring of the stator core is provided with a stator notch oil passage, the stator notch oil passage and the stator slots are arranged in a one-to-one correspondence mode, and the stator notch oil passage is communicated with the stator slots.
According to an optional technical scheme of the motor, the inner wall of the stator core is attached with a stator oil-separating ring.
There is provided a vehicle comprising an electric machine as claimed in any one of the preceding claims.
The invention has the beneficial effects that:
according to the semi-magnetic bridge permanent magnet synchronous motor rotor provided by the invention, the grooves which are inwards concavely arranged on the edges of the rotor iron core are arranged on the two sides of the second magnetic pole pair to replace the traditional rotor magnetic isolation bridge arranged at the excircle of the rotor iron core, so that the magnetic leakage of the permanent magnet can be greatly reduced, the power factor is improved, the utilization rate of the permanent magnet is improved, the cost of the motor is reduced, the salient pole ratio can be increased, the reluctance torque is improved, and the output capacity of the motor is improved; set up rotor magnetic isolation bridge between two permanent magnets of first magnetic pole pair, set up rotor magnetic isolation bridge between two permanent magnets of second magnetic pole pair, set up rotor magnetic isolation bridge between recess and second magnetic pole pair, the permanent magnet location of being convenient for to with the cooperation of rotor sheath, guarantee rotor core's structural strength, satisfy vehicle driving motor's high rotational speed demand.
The motor provided by the invention reduces the electromagnetic air gap of the motor and improves the magnetic load and the motor torque.
Drawings
FIG. 1 is a schematic structural diagram of a motor stator and a motor rotor connection provided by an embodiment of the invention;
FIG. 2 is a schematic structural diagram of a rotor of an electric machine according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a stator of an electric machine according to an embodiment of the present invention.
In the figure:
1. a rotor core; 3. a permanent magnet; 4. a rotor magnetic isolation bridge; 5. a groove; 6. a rotor sheath; 7. a stator;
21. a first magnetic pole pair; 211. a first permanent magnet slot; 22. a second magnetic pole pair;
71. a stator core; 72. a stator slot; 73. a stator winding; 74. a stator yoke oil passage; 75. a stator slot oil passage; 76. stator oil-separating ring.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
To among the prior art, when the centrifugal force that produces when the motor rotates at a high speed acted on motor rotor core, probably resulted in the magnetism bridge that separates of rotor excircle department to produce deformation, slight deformation can make motor magnetic field density distribution change, influence the performance, serious deformation can cause motor rotor to sweep the thorax, damages the problem of motor, and this embodiment provides a half magnetic bridge permanent magnet synchronous motor rotor, motor and vehicle in order to solve above-mentioned problem.
Specifically, as shown in fig. 1, the motor provided in this embodiment includes a stator 7 and a half-magnetic-bridge permanent magnet synchronous motor rotor, where the stator 7 surrounds the outer side of the half-magnetic-bridge permanent magnet synchronous motor rotor.
As shown in fig. 2, the half-magnetic bridge permanent magnet synchronous motor rotor is a half-magnetic bridge double-layer built-in rotor structure, and specifically, a linear, single-V or double-V double-layer permanent magnet structure may be adopted. The semi-magnetic bridge permanent magnet synchronous motor rotor comprises a rotor core 1 and a rotor sheath 6, and the rotor core 1 is sleeved with the rotor sheath 6. Rotor core 1 is equipped with many pairs of rotor magnetic poles along circumference, every rotor magnetic pole all includes by 1 outward flange of rotor core inwards set up at least one first magnetic pole pair 21 and at least one second magnetic pole pair 22, be equipped with rotor magnetic isolation bridge 4 between two permanent magnets 3 of first magnetic pole pair 21 and between two permanent magnets 3 of second magnetic pole 22 pair respectively, the both sides of second magnetic pole pair 22 all are equipped with by 1 outward flange of rotor core inwards concave groove 5 of establishing, be equipped with rotor magnetic isolation bridge 4 between every groove 5 and the second magnetic pole pair 22.
In the semi-magnetic bridge permanent magnet synchronous motor rotor provided by the embodiment, the grooves 5 which are inwards recessed and arranged at the edges of the rotor iron core 1 are arranged at the two sides of the second magnetic pole pair 22 to replace the traditional rotor magnetic isolation bridge 4 which is arranged at the excircle of the rotor iron core 1, so that the magnetic leakage of the permanent magnet 3 can be greatly reduced, the power factor is improved, the utilization rate of the permanent magnet 3 is improved, the motor cost is reduced, the salient pole ratio can be increased, the reluctance torque is improved, and the motor output capacity is improved; set up rotor magnetic isolation bridge 4 between two permanent magnets 3 of first magnetic pole pair 21, set up rotor magnetic isolation bridge 4 between two permanent magnets 3 of second magnetic pole pair 22, set up rotor magnetic isolation bridge 4 between recess 5 and second magnetic pole pair 22, the permanent magnet 3 location of being convenient for to with the cooperation of rotor sheath 6, guarantee rotor core 1's structural strength, satisfy driving motor's for the vehicle high rotational speed demand.
The motor using the semi-magnetic bridge permanent magnet synchronous motor rotor reduces the electromagnetic air gap of the motor and improves the magnetic load and the motor torque.
In this embodiment, a first magnetic pole pair 21 and a second magnetic pole pair 22 are provided, that is, each pair of rotor magnetic poles is provided with four rotor magnetic isolation bridges 4, so as to ensure the strength of the rotor core 1, and the four rotor magnetic isolation bridges 4 are used for enhancing the strength of the rotor core 1 in cooperation with the rotor sheath 6, so that the deformation of the rotor in the high-speed rotation process is reduced, and the position of the permanent magnet 3 is convenient to fix. Meanwhile, the magnetic leakage is greatly reduced, the salient pole ratio is increased, the reluctance torque is improved, and the motor cost is reduced. In other embodiments, the first magnetic pole pair 21 and the second magnetic pole pair 22 may be respectively provided in plural, and are not particularly limited herein.
In this embodiment, be equipped with the first permanent magnet groove 211 that two intervals set up on rotor core 1, be equipped with the permanent magnet 3 of first magnetic pole pair 21 in the first permanent magnet groove 211, the edge of rotor core 1 is run through to the one end in first permanent magnet groove 211, has further reduced 3 magnetic leakages of permanent magnet, and cooperates with rotor sheath 6 in order to improve rotor core 1's structural strength. The rotor magnetic isolation bridge 4 is formed between the two first permanent magnet slots 211.
And two second permanent magnet grooves which are arranged at intervals are arranged on the rotor core 1, and permanent magnets 3 of a second magnetic pole pair 22 are arranged in the second permanent magnet grooves. A rotor magnetic isolation bridge 4 is formed between the two second permanent magnet grooves, and the other end of each second permanent magnet groove is arranged at intervals with the groove 5 to form the rotor magnetic isolation bridge 4.
Structural glue is coated on the magnetizing surface of the permanent magnet 3 of the first magnetic pole pair 21 and the inner surface of the first permanent magnet groove 211 to form a bonding layer for bonding the permanent magnet, so that the permanent magnet 3 is convenient to mount, and the connection mode is simple.
Structural glue is coated on the magnetizing surface of the permanent magnet 3 of the second magnetic pole pair 22 and the inner surface of the second permanent magnet groove to form a bonding layer for bonding the permanent magnet 3, so that the permanent magnet 3 is convenient to mount, and the connection mode is simple.
In this embodiment, the width of the rotor magnetic isolation bridge 4 and the thickness of the rotor sheath 6 need to be optimally designed according to the maximum magnetic load principle and the requirement of meeting the rotor strength, and the width of the rotor magnetic isolation bridge 4 and the thickness of the rotor sheath 6 need to be set in a matching manner, so as to improve the click power density. After optimization, the narrow rotor magnetic isolation bridge 4 and the rotor sheath 6 are matched to meet the strength requirement of the rotor core 1, and the generation of magnetic leakage is reduced.
Specifically, the specific dimensions of the width of the rotor magnetic isolation bridge 4 and the thickness of the rotor sheath 6 are not specifically limited herein, and the structural strength of the rotor core 1 is satisfied, so that the generation of magnetic leakage is reduced.
Rotor sheath 6 covers the outside of locating rotor core 1, exerts the pretightning force to rotor sheath 6 through the machine, makes rotor sheath 6 and 1 interference fit of rotor core.
The rotor sheath 6 is made of carbon fiber or alloy material, and if the motor is a high-speed motor, the rotor sheath 6 is preferably made of carbon fiber material, so that eddy current loss is reduced, and overheating of a motor rotor is avoided.
The rotor magnetic isolation bridge 4 can be made of non-magnetic materials, so that magnetic leakage is further inhibited, and the utilization rate of the permanent magnet 3 is improved.
When the motor rotor is assembled, the permanent magnets 3 are sequentially arranged in the first permanent magnet grooves 211 and the second permanent magnet grooves on the rotor core 1 through a machine tool, after the structural adhesive between the magnetizing surface of the permanent magnets 3 and the first permanent magnet grooves 211 or the second permanent magnet grooves on the rotor core 1 is dried, the pretightening force is applied by the machine to circumferentially wind the rotor sheath 6 on the periphery of the rotor core 1, and the motor rotor is assembled. And then, carrying out dynamic balance test and high-speed rotation test of the motor rotor in sequence, and if the motor rotor does not deviate and the rotor sheath 6 does not crack under the highest rotating speed required by the motor, indicating that the motor rotor is qualified.
As shown in fig. 3. The stator 7 includes a stator core 71, a stator slot 72 is formed on the stator core 71, and a stator winding 73 is disposed in the stator slot 27.
The stator core 71 is provided with a stator yoke oil passage 74 in the circumferential direction of the outer ring, and the number of the stator yoke oil passages 74 is the same as the number of the stator slots 72. The inner ring of the stator core 71 is provided with a stator slot oil passage 75, the stator slot oil passage 75 corresponds to the stator slots 72 one by one, and the stator slot oil passage 75 is communicated with the stator slots 72. Specifically, the stator yoke portion oil passage 74 and the stator slot opening oil passage 75 are arranged, oil immersion cooling is adopted, the problems of high loss density and high temperature rise of the motor at a high speed can be effectively solved, and the requirement of the motor on high power density is met.
The inner wall of the stator core 71 is attached with a stator oil-separating ring 76, and the stator oil-separating ring 76 is used for sealing the stator notch oil passage 75.
The rotor core 1 excircle in the motor that this embodiment provided does not have the magnetic bridge structure, greatly reduced the magnetic leakage, improved motor magnetic load, adopt stator yoke portion and stator notch cooling simultaneously, can further improve motor electric load, effectively reduce the loss density of motor under the high-speed condition.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. The utility model provides a half magnetic bridge PMSM rotor which characterized in that includes:
the rotor comprises a rotor core (1), wherein a plurality of pairs of rotor magnetic poles are arranged on the rotor core (1) along the circumferential direction, each pair of rotor magnetic poles comprises at least one first magnetic pole pair (21) and at least one second magnetic pole pair (22) which are inwards arranged from the outer edge of the rotor core (1), rotor magnetic isolation bridges (4) are respectively arranged between two permanent magnets (3) of the first magnetic pole pair (21) and between two permanent magnets (3) of the second magnetic pole pair (22), grooves (5) which are inwards recessed from the outer edge of the rotor core (1) are respectively arranged on two sides of the second magnetic pole pair (22), and a rotor magnetic isolation bridge (4) is arranged between each groove (5) and the second magnetic pole pair (22);
and the rotor sheath (6) is sleeved on the outer side of the rotor core (1).
2. The rotor of the half-magnetic bridge permanent magnet synchronous motor according to claim 1, wherein two first permanent magnet slots (211) are arranged on the rotor core (1) at intervals, the permanent magnets (3) of the first magnetic pole pair (21) are arranged in the first permanent magnet slots (211), and one end of each first permanent magnet slot (211) penetrates through the edge of the rotor core (1);
and two second permanent magnet grooves which are arranged at intervals are formed in the rotor iron core (1), and permanent magnets (3) of second magnetic pole pairs (22) are arranged in the second permanent magnet grooves.
3. The rotor of a half-bridge permanent magnet synchronous motor according to claim 2, wherein the magnetizing surfaces of the permanent magnets (3) of the first magnetic pole pair (21) and the inner surfaces of the first permanent magnet slots (211) are coated with structural glue;
structural glue is coated on the magnetizing surface of the permanent magnet (3) of the second magnetic pole pair (22) and the inner surface of the second permanent magnet groove.
4. A half-bridge permanent magnet synchronous motor rotor according to claim 1, characterized in that the width of the rotor magnetic bridges (4) and the thickness of the rotor sheath (6) are arranged in a matching manner.
5. The rotor of the half-magnetic bridge permanent magnet synchronous motor according to claim 1, wherein the material of the rotor sheath (6) is carbon fiber or alloy material.
6. An electric machine comprising a stator (7) and a half-bridge PMSM rotor according to any of claims 1-5, said stator (7) being wound around the outside of said half-bridge PMSM rotor.
7. An electric machine according to claim 6, characterized in that the stator (7) comprises a stator core (71), that the stator core (71) is provided with stator slots (72), and that the stator slots (72) are provided with stator windings (73).
8. The motor according to claim 7, wherein the outer ring of the stator core (71) is circumferentially provided with a stator yoke oil passage (74), and the number of the stator yoke oil passages (74) is the same as the number of the stator slots (72);
the inner ring of the stator core (71) is provided with a stator notch oil passage (75), the stator notch oil passage (75) and the stator slots (72) are arranged in a one-to-one correspondence mode, and the stator notch oil passage (75) is communicated with the stator slots (72).
9. The motor according to claim 8, characterized in that the inner wall of the stator core (71) is provided with a stator oil-separating ring (76) in a fitting manner.
10. A vehicle, characterized in that it comprises an electric machine according to any one of claims 6-9.
CN202210585498.7A 2022-05-26 2022-05-26 Half magnetic bridge PMSM rotor, motor and vehicle Pending CN114844262A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210585498.7A CN114844262A (en) 2022-05-26 2022-05-26 Half magnetic bridge PMSM rotor, motor and vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210585498.7A CN114844262A (en) 2022-05-26 2022-05-26 Half magnetic bridge PMSM rotor, motor and vehicle

Publications (1)

Publication Number Publication Date
CN114844262A true CN114844262A (en) 2022-08-02

Family

ID=82572502

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210585498.7A Pending CN114844262A (en) 2022-05-26 2022-05-26 Half magnetic bridge PMSM rotor, motor and vehicle

Country Status (1)

Country Link
CN (1) CN114844262A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116633051A (en) * 2023-07-24 2023-08-22 中国第一汽车股份有限公司 Motor rotor, permanent magnet synchronous motor and vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116633051A (en) * 2023-07-24 2023-08-22 中国第一汽车股份有限公司 Motor rotor, permanent magnet synchronous motor and vehicle
CN116633051B (en) * 2023-07-24 2023-10-24 中国第一汽车股份有限公司 Motor rotor, permanent magnet synchronous motor and vehicle

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