WO2019174328A1 - Rotor structure and motor having same - Google Patents

Rotor structure and motor having same Download PDF

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Publication number
WO2019174328A1
WO2019174328A1 PCT/CN2018/119877 CN2018119877W WO2019174328A1 WO 2019174328 A1 WO2019174328 A1 WO 2019174328A1 CN 2018119877 W CN2018119877 W CN 2018119877W WO 2019174328 A1 WO2019174328 A1 WO 2019174328A1
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WIPO (PCT)
Prior art keywords
magnetic steel
rotor
magnetic
groove
steel groove
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PCT/CN2018/119877
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French (fr)
Chinese (zh)
Inventor
郭长光
张小波
刘健宁
张芳
贾金信
李广海
李忠雨
魏琼
闫瑾
王泽业
熊博文
梁建东
Original Assignee
珠海格力电器股份有限公司
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Priority to CN201810218935.5A priority Critical patent/CN108462272A/en
Priority to CN201810218935.5 priority
Application filed by 珠海格力电器股份有限公司 filed Critical 珠海格力电器股份有限公司
Publication of WO2019174328A1 publication Critical patent/WO2019174328A1/en

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22Rotating parts of the magnetic circuit
    • H02K1/27Rotor cores with permanent magnets
    • H02K1/2706Inner rotor
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22Rotating parts of the magnetic circuit
    • H02K1/27Rotor cores with permanent magnets
    • H02K1/2706Inner rotor
    • H02K1/272Inner rotor where the magnetisation axis of the magnets is radial or tangential
    • H02K1/274Inner rotor where the magnetisation axis of the magnets is radial or tangential consisting of a plurality of circumferentially positioned magnets
    • H02K1/2753Inner rotor where the magnetisation axis of the magnets is radial or tangential consisting of a plurality of circumferentially positioned magnets consisting of magnets or groups of magnets arranged with alternating polarity
    • H02K1/276Magnets embedded in the magnetic core
    • H02K1/2766Magnets embedded in the magnetic core having a flux concentration effect
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K21/00Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/14Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures

Abstract

A rotor structure and a motor having same. The rotor structure comprises a rotor body (10). The rotor body (10) is provided with magnetic steel slot sets, each magnetic steel slot set comprising a plurality of magnetic steel slots (20, 30, 40). The plurality of magnetic steel slots (20, 30, 40) are independently arranged, and a magnetic conduction channel is formed between every two adjacent magnetic steel slots (20, 30, 40). The lines extending in the radial directions of the plurality of magnetic steel slots (20, 30, 40) form a triangular. The arrangement of the magnetic steel slots can effectively increase the length of the magnetic isolation bridge formed on the rotor body (10), reducing the magnetic flux leakage of the transfer structure, and improving the anti-demagnetization capability of the rotor, i.e. effectively improving the utilization rate of the magnetic field of the rotor, and reducing the loss of the rotor. By using the technical solution, the anti-demagnetization capability of the motor rotor is improved, so that the safety factor of the motor rotor is increased; the motor rotor is easy to assembly, so that the manufacturing cost of the motor rotor is decreased; and the arrangement manner of the triangular magnetic steel slots increases the corresponding reluctance torque, so that the motor is easier to be flux-weakened, and the motor can achieve a higher rotation speed.

Description

转子结构及具有其的电机Rotor structure and motor therewith 技术领域Technical field
本发明涉及电机设备技术领域,具体而言,涉及一种转子结构及具有其的电机。The present invention relates to the field of electrical equipment, and in particular to a rotor structure and a motor therewith.
背景技术Background technique
永磁同步电机具有效率高、噪音低及可靠性高等优点,已经成为未来汽车驱动电机的主要趋势,永磁同步电机一般采用稀土材料的钕铁硼磁钢,占整个电机的总成本的20-30%。新能源汽车作为汽车领域全球未来降低碳排放的唯一蓝图及技术方向,将逐步取代燃油车。未来对汽车驱动电机将会有很大的需求,势必造成稀土的大量使用,所以采用现有技术中的电机容易造成成本大的问题。进一步地,现有技术中的电机转子结构具有漏磁量大、抗退磁能力低的问题。Permanent magnet synchronous motors have the advantages of high efficiency, low noise and high reliability. They have become the main trend of automotive drive motors in the future. Permanent magnet synchronous motors generally use NdFeB magnets of rare earth materials, accounting for 20- of the total cost of the entire motor. 30%. As the only blueprint and technical direction for the global future of reducing carbon emissions in the automotive sector, new energy vehicles will gradually replace fuel vehicles. In the future, there will be a great demand for automotive drive motors, which will inevitably lead to the use of rare earths. Therefore, the use of motors in the prior art is likely to cause cost problems. Further, the rotor structure of the prior art has a problem of large magnetic flux leakage and low anti-demagnetization capability.
发明内容Summary of the invention
本发明的主要目的在于提供一种转子结构及具有其的电机,以解决现有技术中电机转子的抗退磁能力低的问题。SUMMARY OF THE INVENTION A primary object of the present invention is to provide a rotor structure and a motor therewith to solve the problem of low demagnetization resistance of the rotor of the motor in the prior art.
为实现上述目的,根据本发明的一个方面,提供了一种转子结构,包括:转子本体,转子本体上开设有磁钢槽组,磁钢槽组包括多个磁钢槽,多个磁钢槽独立地设置,相邻的两个磁钢槽之间形成导磁通道,多个磁钢槽的径向方向的延长线围设成三角形。In order to achieve the above object, according to an aspect of the present invention, a rotor structure is provided, including: a rotor body having a magnetic steel groove group formed thereon, the magnetic steel groove group including a plurality of magnetic steel grooves, and a plurality of magnetic steel grooves Independently disposed, a magnetic conductive channel is formed between two adjacent magnetic steel grooves, and an extension line of a plurality of magnetic steel grooves in a radial direction is surrounded by a triangle.
进一步地,多个磁钢槽包括:第一磁钢槽,第一磁钢槽的第一端朝向转子本体的圆心延伸,第一磁钢槽的第二端朝向转子本体的外边沿延伸;第二磁钢槽,第二磁钢槽的第一端朝向转子本体的圆心延伸并与第一磁钢槽的第一端相邻地设置,第二磁钢槽的第二端朝向转子本体的外边沿延伸并逐渐远离第一磁钢槽,第一磁钢槽与第二磁钢槽围成V形结构。Further, the plurality of magnetic steel grooves include: a first magnetic steel groove, a first end of the first magnetic steel groove extends toward a center of the rotor body, and a second end of the first magnetic steel groove extends toward an outer edge of the rotor body; a second magnetic steel groove, the first end of the second magnetic steel groove extends toward a center of the rotor body and is disposed adjacent to the first end of the first magnetic steel groove, and the second end of the second magnetic steel groove faces the outer side of the rotor body The edge extends and gradually moves away from the first magnetic steel groove, and the first magnetic steel groove and the second magnetic steel groove enclose a V-shaped structure.
进一步地,多个磁钢槽还包括:第三磁钢槽,第三磁钢槽的第一端朝向第一磁钢槽的第一端延伸设置,第三磁钢槽的第二端朝向第二磁钢槽的第二端延伸设置,第三磁钢槽位于第一磁钢槽和第二磁钢槽形成的夹角内。Further, the plurality of magnetic steel grooves further include: a third magnetic steel groove, the first end of the third magnetic steel groove extends toward the first end of the first magnetic steel groove, and the second end of the third magnetic steel groove faces the The second end of the two magnetic steel troughs is extended, and the third magnetic steel trough is located in an angle formed by the first magnetic steel trough and the second magnetic steel trough.
进一步地,第三磁钢槽的长度方向的第三几何中心线的中垂线过转子本体的圆心。Further, the mid-perpendicular line of the third geometric center line in the longitudinal direction of the third magnetic steel groove passes through the center of the rotor body.
进一步地,第三磁钢槽的沿转子本体的径向方向从内到外相对设置的两个侧壁中至少一个侧壁为直面。Further, at least one of the two side walls of the third magnetic steel groove which are oppositely disposed from the inside to the outside in the radial direction of the rotor body is a straight surface.
进一步地,第三磁钢槽的沿转子本体的径向方向从内到外相对设置的两个侧壁相互平行地设置。Further, the two side walls of the third magnetic steel groove which are disposed oppositely from the inside to the outside in the radial direction of the rotor body are disposed in parallel with each other.
进一步地,第三磁钢槽的远离转子本体的圆心的侧壁与转子本体外边沿具有距离地设置以形成隔磁桥。Further, a side wall of the third magnetic steel groove away from the center of the rotor body is disposed at a distance from the outer edge of the rotor body to form a magnetic isolation bridge.
进一步地,转子结构还包括:第一磁钢,第一磁钢设置于第三磁钢槽内,第一磁钢的至少一端与第三磁钢槽的内壁具有距离地设置以形成空气槽。Further, the rotor structure further includes: a first magnetic steel, the first magnetic steel is disposed in the third magnetic steel groove, and at least one end of the first magnetic steel is disposed at a distance from an inner wall of the third magnetic steel groove to form an air groove.
进一步地,转子结构还包括:第二磁钢,设置于第一磁钢槽和第二磁钢槽内,第一磁钢和第二磁钢为铁氧体磁钢,或者,第一磁钢和第二磁钢中的一个为铁氧体磁钢,第一磁钢和第二磁钢中的另一个为稀土钕铁硼磁钢。Further, the rotor structure further includes: a second magnetic steel disposed in the first magnetic steel trough and the second magnetic steel trough, wherein the first magnetic steel and the second magnetic steel are ferrite magnetic steel, or the first magnetic steel One of the first magnetic steel and the second magnetic steel is a ferrite magnetic steel, and the other of the first magnetic steel and the second magnetic steel is a rare earth neodymium iron boron magnetic steel.
根据本发明的另一个方面,提供了一种电机,包括转子结构,转子结构为上述的转子结构。According to another aspect of the present invention, there is provided an electric machine comprising a rotor structure, the rotor structure being the rotor structure described above.
应用本发明的技术方案,转子结构包括转子本体,转子本体上开设有磁钢槽组,磁钢槽组包括多个磁钢槽,多个磁钢槽独立地设置,相邻的两个磁钢槽之间形成导磁通道。多个磁钢槽的径向方向的延长线围设成三角形。这种磁钢槽的排布方式,能够有效地增加形成于转子本体上的隔磁桥的长度,减少了转接结构的漏磁量,提升了转子的抗退磁能力,即有效地提高了转子磁场的利用率,并降低了转子的损耗。According to the technical solution of the present invention, the rotor structure comprises a rotor body, and the rotor body is provided with a magnetic steel groove group, the magnetic steel groove group comprises a plurality of magnetic steel grooves, and the plurality of magnetic steel grooves are independently arranged, and the adjacent two magnetic steels A magnetic conductive path is formed between the grooves. The extension line of the plurality of magnetic steel grooves in the radial direction is surrounded by a triangle. The arrangement of the magnetic steel trough can effectively increase the length of the magnetic isolation bridge formed on the rotor body, reduce the magnetic flux leakage of the adapter structure, and improve the anti-demagnetization capability of the rotor, that is, effectively improve the rotor The utilization of the magnetic field and the loss of the rotor.
附图说明DRAWINGS
构成本申请的一部分的说明书附图用来提供对本发明的进一步理解,本发明的示意性实施例及其说明用于解释本发明,并不构成对本发明的不当限定。在附图中:The accompanying drawings, which are incorporated in the claims of the claims In the drawing:
图1示出了根据本发明的转子结构的实施例的结构示意图。Figure 1 shows a schematic structural view of an embodiment of a rotor structure in accordance with the present invention.
其中,上述附图包括以下附图标记:Wherein, the above figures include the following reference numerals:
10、转子本体;11、隔磁桥;10, the rotor body; 11, magnetic bridge;
20、第一磁钢槽;30、第二磁钢槽;40、第三磁钢槽;50、第一磁钢;60、第二磁钢;70、定子;71、线圈;72、定子齿。20, the first magnetic steel trough; 30, the second magnetic steel trough; 40, the third magnetic steel trough; 50, the first magnetic steel; 60, the second magnetic steel; 70, the stator; 71, the coil; .
具体实施方式detailed description
需要说明的是,在不冲突的情况下,本申请中的实施例及实施例中的特征可以相互组合。下面将参考附图并结合实施例来详细说明本发明。It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. The invention will be described in detail below with reference to the drawings in conjunction with the embodiments.
结合图1所示,根据本发明的实施例,提供了一种转子结构。In conjunction with Figure 1, a rotor structure is provided in accordance with an embodiment of the present invention.
具体地,该转子结构包括转子本体10,转子本体10上开设有磁钢槽组,磁钢槽组包括多个磁钢槽,多个磁钢槽独立地设置,相邻的两个磁钢槽之间形成导磁通道,多个磁钢槽的径向方向的延长线围设成三角形。Specifically, the rotor structure includes a rotor body 10, and the rotor body 10 is provided with a magnetic steel groove group, the magnetic steel groove group includes a plurality of magnetic steel grooves, and the plurality of magnetic steel grooves are independently disposed, and the adjacent two magnetic steel grooves A magnetic conductive path is formed therebetween, and an extension line of the plurality of magnetic steel grooves in the radial direction is surrounded by a triangle.
在本实施例中,多个磁钢槽的径向方向的延长线围设成三角形。这种磁钢槽的排布方式,能够有效地增加形成于转子本体上的隔磁桥11的长度,减少了转接结构的漏磁量,提升了转子的抗退磁能力,即有效地提高了转子磁场的利用率,并降低了转子的损耗。In the present embodiment, the extension lines of the plurality of magnetic steel grooves in the radial direction are surrounded by a triangle. The arrangement of the magnetic steel trough can effectively increase the length of the magnetic isolation bridge 11 formed on the rotor body, reduce the magnetic flux leakage of the transfer structure, and improve the anti-demagnetization capability of the rotor, thereby effectively improving the magnetic flux. The utilization of the rotor magnetic field and the loss of the rotor.
其中,多个磁钢槽包括第一磁钢槽20和第二磁钢槽30。第一磁钢槽20的第一端朝向转子本体10的圆心延伸,第一磁钢槽20的第二端朝向转子本体10的外边沿延伸。第二磁钢槽30的第一端朝向转子本体10的圆心延伸并与第一磁钢槽20的第一端相邻地设置,第二磁钢槽30的第二端朝向转子本体10的外边沿延伸并逐渐远离第一磁钢槽20,第一磁钢槽20与第二磁钢槽30围成V形结构。这样设置便于配合“一”字型第三磁钢槽40,共同形成更稳定的转子磁场。Wherein, the plurality of magnetic steel grooves include the first magnetic steel groove 20 and the second magnetic steel groove 30. The first end of the first magnetic steel groove 20 extends toward the center of the rotor body 10, and the second end of the first magnetic steel groove 20 extends toward the outer edge of the rotor body 10. The first end of the second magnetic steel groove 30 extends toward the center of the rotor body 10 and is disposed adjacent to the first end of the first magnetic steel groove 20, and the second end of the second magnetic steel groove 30 faces the outer side of the rotor body 10. The edge extends and gradually moves away from the first magnetic steel groove 20, and the first magnetic steel groove 20 and the second magnetic steel groove 30 enclose a V-shaped structure. This arrangement facilitates the cooperation with the "one" type third magnetic steel groove 40 to jointly form a more stable rotor magnetic field.
在本实施例中,多个磁钢槽还包括第三磁钢槽40。第三磁钢槽40的第一端朝向第一磁钢槽20的第一端延伸设置,第三磁钢槽40的第二端朝向第二磁钢槽30的第二端延伸设置,第三磁钢槽40位于第一磁钢槽20和第二磁钢槽30形成的夹角内。这样设置能够有效减少转子结构的漏磁量。In the present embodiment, the plurality of magnetic steel grooves further include a third magnetic steel groove 40. The first end of the third magnetic steel groove 40 extends toward the first end of the first magnetic steel groove 20, and the second end of the third magnetic steel groove 40 extends toward the second end of the second magnetic steel groove 30, and the third The magnetic steel groove 40 is located within an angle formed by the first magnetic steel groove 20 and the second magnetic steel groove 30. This arrangement can effectively reduce the amount of magnetic leakage of the rotor structure.
其中,第三磁钢槽40的长度方向的第三几何中心线的中垂线过转子本体10的圆心。这样设置能够保证转子的磁场分布均匀。The center line of the third geometric center line in the longitudinal direction of the third magnetic steel groove 40 passes through the center of the rotor body 10. This arrangement ensures a uniform magnetic field distribution of the rotor.
如图1所示,第三磁钢槽40的沿转子本体10的径向方向从内到外相对设置的两个侧壁中至少一个侧壁为直面。这样设置便于磁钢安装于磁钢槽内且定位精确。As shown in FIG. 1, at least one of the two side walls of the third magnetic steel groove 40 which are disposed oppositely from the inside to the outside in the radial direction of the rotor body 10 is a straight surface. This arrangement facilitates the installation of the magnetic steel in the magnetic steel trough and the positioning is accurate.
如图1所示,第三磁钢槽40的沿转子本体10的径向方向从内到外相对设置的两个侧壁相互平行地设置。这样设置便于磁钢安装,且保证了转子在高速旋转过程中受力均匀,保证了转子的使用寿命。As shown in FIG. 1, the two side walls of the third magnet groove 40 which are disposed oppositely from the inside to the outside in the radial direction of the rotor body 10 are disposed in parallel with each other. This arrangement facilitates the installation of the magnetic steel and ensures that the rotor is evenly stressed during the high-speed rotation process, thereby ensuring the service life of the rotor.
如图1所示,第三磁钢槽40的远离转子本体10的圆心的侧壁与转子本体10外边沿具有距离地设置以形成隔磁桥11。隔磁桥11处于第三磁钢槽40和定子70上的定子齿72之间,其中,定子齿72在定子70上均匀周向排列,且定子齿72之间安有线圈71,这样设置减少了转子磁场的漏磁。As shown in FIG. 1, the side wall of the third magnet groove 40 away from the center of the rotor body 10 is disposed at a distance from the outer edge of the rotor body 10 to form a magnetic bridge 11. The magnetic isolation bridge 11 is between the third magnetic steel groove 40 and the stator teeth 72 on the stator 70, wherein the stator teeth 72 are uniformly circumferentially arranged on the stator 70, and the coils 71 are disposed between the stator teeth 72, so that the arrangement is reduced. The magnetic flux leakage of the rotor magnetic field.
在本实施例中,转子结构还包括第一磁钢50。第一磁钢50设置于第三磁钢槽40内。第一磁钢50的至少一端与第三磁钢槽40的内壁具有距离地设置以形成空气槽。这样设置使得安装磁钢安装更加方便。In the present embodiment, the rotor structure further includes a first magnetic steel 50. The first magnet 50 is disposed in the third magnet channel 40. At least one end of the first magnet 50 is disposed at a distance from the inner wall of the third magnet groove 40 to form an air groove. This arrangement makes mounting the magnetic steel more convenient.
其中,转子结构还包括第二磁钢60。第二磁钢60设置于第一磁钢槽20和第二磁钢槽30内。第一磁钢50和第二磁钢60均为铁氧体磁钢。这样设置用铁氧体磁钢代替传统稀土材料的钕铁硼磁钢,使得制造转子的成本大大降低,并且使转子在低温及高温的环境下更能发挥自身的效能。另外,铁氧体磁钢磁性较弱,相较钕铁硼磁钢更易安装。Wherein, the rotor structure further includes a second magnetic steel 60. The second magnet steel 60 is disposed in the first magnet steel tank 20 and the second magnet steel tank 30. The first magnet 50 and the second magnet 60 are both ferrite magnets. In this way, the replacement of the conventional rare earth material of neodymium iron boron magnetic steel with ferrite magnetic steel makes the cost of manufacturing the rotor greatly reduced, and the rotor can exert its own performance in a low temperature and high temperature environment. In addition, ferrite magnets are weaker in magnetic properties and easier to install than NdFeB magnets.
其中,第一磁钢和第二磁钢中的一个为铁氧体磁钢,第一磁钢和第二磁钢中的另一个为稀土钕铁硼磁钢。这样设置同样能够降低转子的生产成本。Wherein one of the first magnetic steel and the second magnetic steel is a ferrite magnetic steel, and the other of the first magnetic steel and the second magnetic steel is a rare earth neodymium iron boron magnetic steel. This arrangement can also reduce the production cost of the rotor.
在本实施例中,上述实施例中的转子结构还可以用于电机设备技术领域,即根据本发明的另一个方面,提供了一种电机。该电机包括转子结构,转子结构为上述实施例中的转子结构。这样设置降低了电机的整体成本,增加了隔磁桥11的有效长度,减少了转子漏磁,提高了转子的磁场利用率。现有技术中采用的钕铁硼磁钢适合在低温环境下运行,温度越低性能越佳。而铁氧体磁钢则在高温环境下依然能够具有很好的性能。In the present embodiment, the rotor structure in the above embodiment can also be used in the technical field of electrical equipment, that is, in accordance with another aspect of the present invention, an electric machine is provided. The motor includes a rotor structure which is the rotor structure in the above embodiment. This arrangement reduces the overall cost of the motor, increases the effective length of the magnetic isolation bridge 11, reduces the leakage flux of the rotor, and improves the magnetic field utilization of the rotor. The neodymium iron boron magnetic steel used in the prior art is suitable for operation in a low temperature environment, and the lower the temperature, the better the performance. Ferrite magnets still have good performance in high temperature environments.
具体地,在本实施例中,第一磁钢为稀土钕铁硼磁钢,第二磁钢为铁氧体磁钢,即第一磁钢槽20和第二磁钢槽30内设置铁氧体磁钢,第三磁钢槽40内设置稀土钕铁硼磁钢,两种磁钢的结合使用可扩大电机的使用坏境温度,使电机在低温或高温的恶劣环境下运行均能很好的发挥电机的性能。采用两种磁钢的结合,减少了钕铁硼磁钢在电机转子的使用量,铁氧体磁钢价格便宜降低了成本。进一步地,使用这种电机产生的空载反电势变低,使得控制器安全系数变高,在汽车出现异常情况时可减少对控制器IGBT模块的伤害。并且,三角形磁钢槽的排布方式使得相应的磁阻转矩增大,电机更容易弱磁,进而电机可达到更高的转速。而且铁氧体磁钢磁性较弱,钕铁硼磁钢的厚度也比现有技术中的磁钢的厚度降低50%,降低了装配难度,提高了生产效率。Specifically, in the embodiment, the first magnetic steel is a rare earth neodymium iron boron magnetic steel, and the second magnetic steel is a ferrite magnetic steel, that is, the first magnetic steel tank 20 and the second magnetic steel tank 30 are provided with ferrite. In the magnetic steel, the third magnetic steel tank 40 is provided with rare earth neodymium iron boron magnetic steel. The combination of the two magnetic steels can expand the use temperature of the motor, so that the motor can run well under the harsh environment of low temperature or high temperature. The performance of the motor. The combination of two types of magnetic steel reduces the amount of NdFeB magnet used in the rotor of the motor, and the price of the ferrite magnet is cheaper and lowers the cost. Further, the no-load back EMF generated by using such a motor becomes low, so that the safety factor of the controller becomes high, and damage to the IGBT module of the controller can be reduced when an abnormality occurs in the automobile. Moreover, the arrangement of the triangular magnetic steel grooves makes the corresponding reluctance torque increase, and the motor is more susceptible to weakening of the magnetic force, so that the motor can reach a higher rotational speed. Moreover, the magnetic properties of the ferrite magnetic steel are weak, and the thickness of the neodymium iron boron magnetic steel is also reduced by 50% compared with the thickness of the magnetic steel in the prior art, which reduces the assembly difficulty and improves the production efficiency.
从以上的描述中,可以看出,本发明上述的实施例实现了如下技术效果:From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:
应用本发明的技术方案,转子结构包括转子本体,转子本体上开设有磁钢槽组,磁钢槽组包括多个磁钢槽,多个磁钢槽独立地设置,相邻的两个磁钢槽之间形成导磁通道。多个磁钢槽的径向方向的延长线围设成三角形。这种磁钢槽的排布方式,能够有效地增加形成于转子本体上的隔磁桥的长度,减少了转接结构的漏磁量,提升了转子的抗退磁能力,即有效地提高了转子磁场的利用率,降低了转子的损耗。According to the technical solution of the present invention, the rotor structure comprises a rotor body, and the rotor body is provided with a magnetic steel groove group, the magnetic steel groove group comprises a plurality of magnetic steel grooves, and the plurality of magnetic steel grooves are independently arranged, and the adjacent two magnetic steels A magnetic conductive path is formed between the grooves. The extension line of the plurality of magnetic steel grooves in the radial direction is surrounded by a triangle. The arrangement of the magnetic steel trough can effectively increase the length of the magnetic isolation bridge formed on the rotor body, reduce the magnetic flux leakage of the adapter structure, and improve the anti-demagnetization capability of the rotor, that is, effectively improve the rotor The utilization of the magnetic field reduces the loss of the rotor.
以上所述仅为本发明的优选实施例而已,并不用于限制本发明,对于本领域的技术人员来说,本发明可以有各种更改和变化。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims (10)

  1. 一种转子结构,其特征在于,包括:A rotor structure, comprising:
    转子本体(10),所述转子本体(10)上开设有磁钢槽组,所述磁钢槽组包括多个磁钢槽,多个所述磁钢槽独立地设置,相邻的两个所述磁钢槽之间形成导磁通道,多个所述磁钢槽的径向方向的延长线围设成三角形。a rotor body (10), the rotor body (10) is provided with a magnetic steel groove group, the magnetic steel groove group includes a plurality of magnetic steel grooves, and the plurality of the magnetic steel grooves are independently arranged, and two adjacent ones A magnetic conductive channel is formed between the magnetic steel grooves, and an extension line of a plurality of the magnetic steel grooves in a radial direction is surrounded by a triangle.
  2. 根据权利要求1所述的转子结构,其特征在于,多个所述磁钢槽包括:The rotor structure of claim 1 wherein a plurality of said magnetic steel channels comprise:
    第一磁钢槽(20),所述第一磁钢槽(20)的第一端朝向所述转子本体(10)的圆心延伸,所述第一磁钢槽(20)的第二端朝向所述转子本体(10)的外边沿延伸;a first magnetic steel groove (20), a first end of the first magnetic steel groove (20) extends toward a center of the rotor body (10), and a second end of the first magnetic steel groove (20) faces Extending the outer edge of the rotor body (10);
    第二磁钢槽(30),所述第二磁钢槽(30)的第一端朝向所述转子本体(10)的圆心延伸并与所述第一磁钢槽(20)的第一端相邻地设置,所述第二磁钢槽(30)的第二端朝向所述转子本体(10)的外边沿延伸并逐渐远离所述第一磁钢槽(20),所述第一磁钢槽(20)与所述第二磁钢槽(30)围成V形结构。a second magnetic steel groove (30), a first end of the second magnetic steel groove (30) extending toward a center of the rotor body (10) and a first end of the first magnetic steel groove (20) Adjacently disposed, a second end of the second magnetic steel groove (30) extends toward an outer edge of the rotor body (10) and gradually away from the first magnetic steel groove (20), the first magnetic The steel trough (20) and the second magnetic steel trough (30) enclose a V-shaped structure.
  3. 根据权利要求2所述的转子结构,其特征在于,多个所述磁钢槽还包括:The rotor structure according to claim 2, wherein the plurality of the magnetic steel grooves further comprises:
    第三磁钢槽(40),所述第三磁钢槽(40)的第一端朝向所述第一磁钢槽(20)的第一端延伸设置,所述第三磁钢槽(40)的第二端朝向所述第二磁钢槽(30)的第二端延伸设置,所述第三磁钢槽(40)位于所述第一磁钢槽(20)和所述第二磁钢槽(30)形成的夹角内。a third magnetic steel groove (40), a first end of the third magnetic steel groove (40) extending toward a first end of the first magnetic steel groove (20), the third magnetic steel groove (40) a second end extending toward the second end of the second magnetic steel groove (30), the third magnetic steel groove (40) being located in the first magnetic steel groove (20) and the second magnetic The steel groove (30) is formed within an included angle.
  4. 根据权利要求3所述的转子结构,其特征在于,所述第三磁钢槽(40)的长度方向的第三几何中心线的中垂线过所述转子本体(10)的圆心。The rotor structure according to claim 3, characterized in that the mid-perpendicular line of the third geometric center line in the longitudinal direction of the third magnetic steel groove (40) passes through the center of the rotor body (10).
  5. 根据权利要求3所述的转子结构,其特征在于,所述第三磁钢槽(40)的沿所述转子本体(10)的径向方向从内到外相对设置的两个侧壁中至少一个侧壁为直面。The rotor structure according to claim 3, wherein at least two of the two side walls of the third magnetic steel groove (40) are disposed oppositely from the inside to the outside in a radial direction of the rotor body (10) One side wall is straight.
  6. 根据权利要求3所述的转子结构,其特征在于,所述第三磁钢槽(40)的沿所述转子本体(10)的径向方向从内到外相对设置的两个侧壁相互平行地设置。The rotor structure according to claim 3, characterized in that the two side walls of the third magnetic steel groove (40) disposed oppositely from the inside to the outside in the radial direction of the rotor body (10) are parallel to each other Ground setting.
  7. 根据权利要求3所述的转子结构,其特征在于,所述第三磁钢槽(40)的远离所述转子本体(10)的圆心的侧壁与所述转子本体(10)外边沿具有距离地设置以形成隔磁桥(11)。The rotor structure according to claim 3, wherein a side wall of the third magnetic steel groove (40) away from a center of the rotor body (10) has a distance from an outer edge of the rotor body (10) Ground to form a magnetic bridge (11).
  8. 根据权利要求3所述的转子结构,其特征在于,所述转子结构还包括:The rotor structure according to claim 3, wherein the rotor structure further comprises:
    第一磁钢(50),所述第一磁钢(50)设置于所述第三磁钢槽(40)内,所述第一磁钢(50)的至少一端与所述第三磁钢槽(40)的内壁具有距离地设置以形成空气槽。a first magnetic steel (50), the first magnetic steel (50) is disposed in the third magnetic steel tank (40), at least one end of the first magnetic steel (50) and the third magnetic steel The inner wall of the groove (40) is disposed at a distance to form an air groove.
  9. 根据权利要求8所述的转子结构,其特征在于,所述转子结构还包括:The rotor structure according to claim 8, wherein the rotor structure further comprises:
    第二磁钢(60),设置于所述第一磁钢槽(20)和所述第二磁钢槽(30)内,所述第一磁钢(50)和所述第二磁钢(60)为铁氧体磁钢,或者,a second magnetic steel (60) disposed in the first magnetic steel trough (20) and the second magnetic steel trough (30), the first magnetic steel (50) and the second magnetic steel ( 60) is a ferrite magnet, or,
    所述第一磁钢(50)和所述第二磁钢(60)中的一个为铁氧体磁钢,所述第一磁钢 (50)和所述第二磁钢(60)中的另一个为稀土钕铁硼磁钢。One of the first magnetic steel (50) and the second magnetic steel (60) is a ferrite magnetic steel, and the first magnetic steel (50) and the second magnetic steel (60) The other is a rare earth neodymium iron boron magnetic steel.
  10. 一种电机,包括转子结构,其特征在于,所述转子结构为权利要求1至9中任一项所述的转子结构。An electric machine comprising a rotor structure, characterized in that the rotor structure is the rotor structure according to any one of claims 1 to 9.
PCT/CN2018/119877 2018-03-16 2018-12-07 Rotor structure and motor having same WO2019174328A1 (en)

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