WO2022116127A1 - 永磁电机圆弧形磁瓦的充磁装置及径向充磁方法 - Google Patents

永磁电机圆弧形磁瓦的充磁装置及径向充磁方法 Download PDF

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WO2022116127A1
WO2022116127A1 PCT/CN2020/133772 CN2020133772W WO2022116127A1 WO 2022116127 A1 WO2022116127 A1 WO 2022116127A1 CN 2020133772 W CN2020133772 W CN 2020133772W WO 2022116127 A1 WO2022116127 A1 WO 2022116127A1
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magnetic pole
magnetizing
magnetic
arc
tile
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PCT/CN2020/133772
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English (en)
French (fr)
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刘楷
林有余
周建辉
汪洋
陈伟
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江苏苏美达五金工具有限公司
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Publication of WO2022116127A1 publication Critical patent/WO2022116127A1/zh

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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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F13/00—Apparatus or processes for magnetising or demagnetising
    • H01F13/003—Methods and devices for magnetising permanent magnets

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  • the invention relates to the technical field of processing and manufacturing of permanent magnet motors and components thereof, in particular to a magnetizing device and a radial magnetizing method for arc-shaped magnetic tiles of a permanent magnet motor.
  • the magnetization methods generally include thickness magnetization (see Figure 5), radial magnetization (see Figure 6), and axial magnetization.
  • Magnetization is relatively simple, all magnetic sheets or tiles are stacked together, separated by plastic plates, wrapped into a long strip, put into the magnetizing tunnel of the magnetizer, and the magnetizer is instantly discharged. That is done.
  • Radial magnetization is relatively troublesome in comparison, and is basically assembled into components for overall magnetization, resulting in low production efficiency.
  • the purpose of the present invention is to provide a magnetizing device and a radial magnetizing method for the arc-shaped magnetic tile of a permanent magnet motor, which can conveniently perform radial magnetization on the arc-shaped magnetic tile, so that the assembled motor magnetic tile can be It can provide a more reasonably distributed magnetic field in the motor air gap and improve the performance of the motor.
  • a magnetizing device for an arc-shaped magnetic tile of a permanent magnet motor comprising an inner magnetic pole, an outer magnetic pole, a yoke ring, an excitation coil and a magnetizing power supply;
  • the inner magnetic pole includes a cylindrical middle portion, the excitation coil is wound around the outer circumference of the cylindrical middle portion of the inner magnetic pole, and both ends of the excitation coil are electrically connected to a magnetizing power source;
  • Both ends of the inner magnetic pole face an outer magnetic pole respectively, and a magnetizing space for placing the magnetic tile to be magnetized is arranged between the inner magnetic end face and the opposite outer magnetic end face;
  • the inner magnetic pole is located inside the magnetic yoke ring, and the end of the outer magnetic pole facing away from the inner magnetic pole is connected to the magnetic yoke ring.
  • the magnetic tile when magnetization is required, the magnetic tile is stopped in the magnetization space, and is attached to the outer magnetic pole and the inner magnetic pole, and a strong excitation magnetic field can be generated when the magnetization power supply is started to discharge instantaneously, and the magnetic tile is completed.
  • radial magnetization The magnetization space can be set as required, which can adapt to the simultaneous magnetization of different numbers of magnetic tiles.
  • the magnetizing device further includes a cylinder corresponding to each outer magnetic pole, the free end of the cylinder piston rod faces the outer magnetic pole, so as to be able to drive the outer magnetic pole to move toward the end of the inner magnetic pole.
  • the cylinder is located outside the yoke ring, and the end of the outer magnetic pole facing away from the inner magnetic pole is connected to the inner ring of the yoke ring.
  • the cylinder piston rod When the cylinder piston rod is stretched, it directly pushes the yoke ring of the section connected to the outer magnetic pole, and then drives the outer magnetic pole inside the yoke ring to move to the magnetizing space, so that the outer magnetic pole, the magnetic tile and the inner magnetic pole can be connected during magnetization.
  • the three are connected reliably.
  • the opposite end faces of the outer magnetic pole and the inner magnetic pole are arc-shaped surfaces, and are respectively adapted to the shapes of the two sides of the arc-shaped magnetic tile to be magnetized.
  • This design can make the effective contact surface between the surface of the magnetic tile to be magnetized and the inner and outer magnetic poles larger during magnetization, and provide a wider range of transmission paths for the magnetic lines of force, thereby achieving higher magnetization efficiency.
  • the two arc-shaped end surfaces of the inner magnetic pole, the arc-shaped end surface of the outer magnetic pole facing the inner magnetic pole, and the arc-shaped magnetic tile to be magnetized have the same curvature and radially coincide. It can achieve higher conduction efficiency of magnetic lines of force, so as to achieve better magnetization efficiency.
  • the yoke ring is circular or oval. Other closed loops can also be selected.
  • the present invention also provides a magnetizing method for the above-mentioned magnetizing device, comprising:
  • the outer magnetic pole is driven to move in the direction of the inner magnetic pole, until the outer magnetic pole, the magnetic tile and the inner magnetic pole are in contact;
  • the number of magnetic tiles is one or more, and the plurality of magnetic tiles are stacked side by side.
  • the structural coordination of the inner magnetic pole, the outer magnetic pole and the yoke ring realizes a magnetizing space capable of radially magnetizing the magnetic tile, and the magnetization efficiency is high.
  • the design of the cylinder It can ensure the effective fit between the inner magnetic pole, the magnetic tile and the outer magnetic pole during magnetization, provide a wider range of magnetic force line paths, and further improve the magnetization effect.
  • the magnetic tile parts magnetized by the magnetizing device and the magnetizing method of the present invention are assembled and used in a permanent magnet motor, which can provide a more reasonably distributed magnetic field in the air gap of the motor and improve the performance of the motor.
  • FIG. 1 is a schematic diagram of the application structure of the magnetizing device of the present invention.
  • FIG. 2 shows a schematic diagram of the structure state during magnetization of the inner magnetic pole, the outer magnetic pole, the yoke ring and the magnetic tile in the magnetizing device of the present invention
  • FIG. 3 is a schematic diagram of an existing thickness magnetization magnetic circuit
  • Figure 4 shows a schematic diagram of an existing radial magnetization magnetic circuit
  • FIG. 5 is a schematic diagram of an existing radial magnetization method
  • FIG. 6 is a schematic diagram of a conventional thickness magnetization method.
  • the magnetizing device of the arc-shaped magnetic tile of the permanent magnet motor of the present invention includes an inner magnetic pole 2, an outer magnetic pole 3, a yoke ring 4, an excitation coil 5 and a magnetizing power source 7;
  • the inner magnetic pole includes a cylindrical middle portion, The excitation coil is wound on the outer periphery of the cylindrical middle portion of the inner magnetic pole, and both ends of the excitation coil are electrically connected to the magnetization power supply;
  • the magnetic tile when magnetization is required, the magnetic tile is stopped in the magnetization space, and is attached to the outer magnetic pole and the inner magnetic pole, and a strong excitation magnetic field can be generated when the magnetization power supply is started to discharge instantaneously, and the magnetic tile is completed.
  • radial magnetization The magnetization space can be set as required, which can adapt to the simultaneous magnetization of different numbers of magnetic tiles.
  • the magnetizing device includes an inner magnetic pole 2, an outer magnetic pole 3, a yoke ring 4, an excitation coil 5, a magnetizing power source 7, and a cylinder 6 respectively provided corresponding to each outer magnetic pole.
  • the free end faces the outer magnetic pole, so as to be able to drive the outer magnetic pole to move towards the end of the inner magnetic pole.
  • the cylinder is located outside the magnetic yoke ring, and the end of the outer magnetic pole away from the inner magnetic pole is connected to the inner ring of the magnetic yoke ring.
  • the cylinder piston rod When the cylinder piston rod is extended, it directly pushes the magnetic yoke ring of the section connected to the outer magnetic pole, and then drives the outer magnetic pole inside the magnetic yoke ring to move to the magnetizing space, so that the outer magnetic pole, the magnetic tile and the inner magnetic pole can be connected during magnetization.
  • the three are connected reliably.
  • the two sides of the magnetic tile can be effectively attached to the outer magnetic pole and the inner magnetic end face respectively, allowing a wider range of magnetic force line circulation paths.
  • the end faces of the inner magnetic pole and the outer magnetic pole opposite Both are arc-shaped surfaces, and are adapted to the shapes of the two sides of the arc-shaped magnetic tile to be magnetized; preferably, the two arc-shaped end faces of the inner magnetic pole, the arc-shaped end face of the outer magnetic pole facing the inner magnetic pole, and the circular arc-shaped end face to be magnetized are designed.
  • the arc-shaped magnetic tile has the same curvature and radial coincidence. It can achieve higher conduction efficiency of magnetic lines of force, so as to achieve better magnetization efficiency.
  • the yoke ring is circular or oval, and other closed rings can also be selected. Both the inner and outer magnetic poles can be replaced and matched according to the size requirements of the arc-shaped magnetic tiles, so they are suitable for radial magnetization of various arc-shaped magnetic tiles.
  • the excitation coil can be cooled by water or air cooling according to the possible degree of heat generation, that is, the magnetizing device is additionally provided with a water cooling or air cooling device. In order to fully excite the magnetic tile, a sufficient margin can also be reserved for the design of the exciter coil.
  • the magnetizing method using the above-mentioned magnetizing device includes:
  • each group of magnetic tiles Put 2 groups of magnetic tiles into the magnetizing space on both sides of the inner magnetic pole; in each group of magnetic tiles, the number of magnetic tiles is one or more, and if there are multiple magnetic tiles, the number of magnetic tiles is the same.
  • the radian direction is juxtaposed and stacked between the outer circular arc surface of the inner magnetic pole and the inner circular arc surface of the outer magnetic pole;
  • the instantaneous discharge When the magnetizer is started, the instantaneous discharge generates a strong magnetizing magnetic field, that is, the radial magnetization of the arc-shaped magnetic tile is completed.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

一种永磁电机圆弧形磁瓦的充磁装置及径向充磁方法，充磁装置包括内磁极（2）、外磁极（3）、磁轭环（4）、激磁线圈（5）和充磁电源（7）；所述内磁极（2）包括柱形中部，所述激磁线圈（5）缠绕于内磁极（2）的柱形中部外周，激磁线圈（5）的两端电连接充磁电源（7）；内磁极（2）的两端分别朝向一个外磁极（3），内磁极（2）端面与相对的外磁极（3）端面之间设有用于放置待充磁磁瓦的充磁空间；所述内磁极（2）位于磁轭环（4）内部，外磁极（3）背离内磁极（2）的一端连接磁轭环（4）。在充磁时，将磁瓦置于充磁空间内，并与外磁极（3）和内磁极（2）贴合，启动充磁电源（7）瞬间放电即可产生很强的激励磁场，完成充磁。利用上述技术方案能够方便的对圆弧形磁瓦进行径向充磁，使得部装后的电机磁瓦能够在电机气隙中提供分布更合理的磁场，提高电机性能。

Description

永磁电机圆弧形磁瓦的充磁装置及径向充磁方法 技术领域
本发明涉及永磁电机及其部件加工制造技术领域，特别是一种永磁电机圆弧形磁瓦的充磁装置及径向充磁方法。
背景技术
在永磁电机中，充磁方式一般有厚度充磁(见图5)、径向充磁(见图6)和轴向充磁等方式，其中轴向充磁在电机中应用不多，厚度充磁比较简单，都是将磁片或磁瓦叠在一起，片与片之间用塑料板隔开，包裹成一个长条，放入充磁机的充磁隧道中，充磁机瞬间放电即完成。而径向充磁比较而言相对麻烦，基本上都是组装成部件来进行整体充磁，生产效率较低。
厚度充磁的电机磁路参考图3，径向充磁的电机磁路参考图4，可以看出，相较于厚度充磁的电机磁场而言，径向充磁的电机磁场(圆弧磁瓦电机)在电机气隙中的分布更合理一点，能够产生的沿转子圆周的切向力会更大，因而效能更好。因此实际应用中，若能将厚度充磁的电机磁瓦改换成径向充磁的磁瓦，将能够提高电机性能，但径向充磁的生产效率问题一直是实际应用中选择径向充磁方式的制约因素。
发明内容
本发明的目的是提供一种永磁电机圆弧形磁瓦的充磁装置及径向充磁方法，能够方便的对圆弧形磁瓦进行径向充磁，使得部装后的电机磁瓦能够在电机气隙中提供分布更合理的磁场，提高电机性能。
本发明采用的技术方案为：一种永磁电机圆弧形磁瓦的充磁装置，包括内磁极、外磁极、磁轭环、激磁线圈和充磁电源；
所述内磁极包括柱形中部，所述激磁线圈缠绕于内磁极的柱形中部外周，激磁线圈的两端电连接充磁电源；
内磁极的两端分别朝向一个外磁极，内磁极端面与相对的外磁极端面之间设有用于放置待充磁磁瓦的充磁空间；
所述内磁极位于磁轭环内部，外磁极背离内磁极的一端连接磁轭环。
本发明在应用中，需要充磁时，将磁瓦止于充磁空间内，并与外磁极和内磁极贴合，启动充磁电源瞬间放电即可产生很强的激励磁场，完成对磁瓦的径向充磁。充磁空间可根据需要设置，能够适应不同数量的磁瓦的同时充磁。
可选的，充磁装置还包括对应各外磁极分别设置的气缸，气缸活塞杆的自由端朝向外磁极，以能够驱动外磁极向内磁极端部方向移动。
可选的，所述气缸位于磁轭环外部，外磁极背离内磁极的一端连接于磁轭环的内环。气缸活塞杆伸长时，直接推动外磁极所连区段的磁轭环，进而带动磁轭环内侧的外磁极向充磁空间移动，从而可在充磁时使外磁极、磁瓦与内磁极三者可靠对接。
可选的，所述外磁极与内磁极两者相对的端面皆为弧形面，并分别与待充磁圆弧形磁瓦的两面形状相适应。这种设计能够在充磁时使待充磁磁瓦的表面与内外磁极之间的有效接触面更大，为磁力线提供更大范围的传输路径，从而实现更高的充磁效率。
可选的，所述内磁极的两弧形端面、外磁极朝向内磁极的弧形端面和待充磁的圆弧形磁瓦，三者弯曲弧度一致，且径向重合。能够实现更高的磁力线传导效率，从而达到更佳的充磁效率。
可选的，所述磁轭环为圆形或椭圆形。也可以选择其它封闭式的环形。
本发明还提供一种上述充磁装置的充磁方法，包括：
将2组磁瓦分别置入内磁极两侧的充磁空间中；
通过控制气缸动作，驱动外磁极向内磁极方向移动，直至外磁极、磁瓦与内磁极三者贴接；
启动充磁电源使其瞬间放电，完成磁瓦充磁。
可选的，各组磁瓦中，磁瓦数量为1个或多个，多个磁瓦之间为并列叠置。
有益效果
本发明充磁装置中，内磁极、外磁极、磁轭环的结构配合，实现了一种能够对磁瓦进行径向充磁的充磁空间，充磁效率较高，同时，结合气缸的设计能够确保充磁时，内磁极、磁瓦与外磁极之间的有效贴合，提供更大范围的磁力线路径，进一步提升充磁效果。将利用本发明充磁装置和充磁方法充磁完成的磁瓦部装后用于永磁电机，可在电机气隙中提供分布更合理的磁场，提高电机性能。
附图说明
图1所示为本发明充磁装置应用结构示意图；
图2所示为本发明充磁装置中，内磁极、外磁极、磁轭环与磁瓦的充磁时结构状态示意图；
图3所示为现有厚度充磁磁路示意图；
图4所示为现有径向充磁磁路示意图；
图5所述为现有径向充磁方式示意图；
图6所示为现有厚度充磁方式示意图。
具体实施方式
以下结合附图和具体实施例进一步描述。
参考图1所示，本发明永磁电机圆弧形磁瓦的充磁装置包括内磁极2、外磁极3、磁轭环4、激磁线圈5和充磁电源7；内磁极包括柱形中部，所述激磁线圈缠绕于内磁极的柱形中部外周，激磁线圈的两端电连接充磁电源；内磁极的两端分别朝向一个外磁极，内磁极端面与相对的外磁极端面之间设有用于放置待充磁磁瓦的充磁空间；内磁极位于磁轭环内部，外磁极背离内磁极的一端连接磁轭环。
本发明在应用中，需要充磁时，将磁瓦止于充磁空间内，并与外磁极和内磁极贴合，启动充磁电源瞬间放电即可产生很强的激励磁场，完成对磁瓦的径向充磁。充磁空间可根据需要设置，能够适应不同数量的磁瓦的同时充磁。
实施例
如图1所示的实施例，充磁装置包括内磁极2、外磁极3、磁轭环4、激磁线圈5、充磁电源7，以及对应各外磁极分别设置的气缸6，气缸活塞杆的自由端朝向外磁极，以能够驱动外磁极向内磁极端部方向移动。
气缸位于磁轭环外部，外磁极背离内磁极的一端连接于磁轭环的内环。气缸活塞杆伸长时，直接推动外磁极所连区段的磁轭环，进而带动磁轭环内侧的外磁极向充磁空间移动，从而可在充磁时使外磁极、磁瓦与内磁极三者可靠对接。
为了确保充磁时，磁瓦两侧面分别能够与外磁极与内磁极端面之间有效贴合，允许更大 范围的磁力线循环路径，本实施例中：内磁极与外磁极两者相对的端面皆为弧形面，并分别与待充磁圆弧形磁瓦的两面形状相适应；优选设计为，内磁极的两弧形端面、外磁极朝向内磁极的弧形端面和待充磁的圆弧形磁瓦，三者弯曲弧度一致，且径向重合。能够实现更高的磁力线传导效率，从而达到更佳的充磁效率。
磁轭环为圆形或椭圆形，也可以选择其它封闭式的环形。内、外磁极都是可以根据圆弧形磁瓦的尺寸要求进行更换实配，从而适用于各种圆弧形磁瓦径向充磁。
考虑到激磁线圈的充放电发热问题，可以根据可能的发热程度对激磁线圈进行水冷或风冷降温，即充磁装置另外设置水冷或风冷装置。为了能够对磁瓦充分激磁，对激磁线圈在设计上也可留有足够的裕量。
利用上述充磁装置的充磁方法，包括：
将2组磁瓦分别置入内磁极两侧的充磁空间中；各组磁瓦中，磁瓦数量为1个或多个，若为多个磁瓦，则多个磁瓦之间为同弧度方向并列叠置在内磁极外圆弧面与外磁极内圆弧面之间；
控制气缸动作，对磁瓦处的磁轭环部位对顶，驱动外磁极向内磁极方向移动，使磁瓦与两磁极贴牢；
启动充磁机瞬间放电产生很强的激磁磁场，即完成圆弧形磁瓦径向充磁。
充磁完成后，松开磁轭环对顶气缸，采用相应工装将磁瓦取出供生产使用。
以上结合附图对本发明的实施例进行了描述，但是本发明并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本发明的启示下，在不脱离本发明宗旨和权利要求所保护的范围情况下，还可做出很多形式，这些均属于本发明的保护之内。

Claims (8)

  1. 一种永磁电机圆弧形磁瓦的充磁装置，其特征是，包括内磁极、外磁极、磁轭环、激磁线圈和充磁电源；
    所述内磁极包括柱形中部，所述激磁线圈缠绕于内磁极的柱形中部外周，激磁线圈的两端电连接充磁电源；
    内磁极的两端分别朝向一个外磁极，内磁极端面与相对的外磁极端面之间设有用于放置待充磁磁瓦的充磁空间；
    所述内磁极位于磁轭环内部，外磁极背离内磁极的一端连接磁轭环。
  2. 根据权利要求1所述的永磁电机圆弧形磁瓦的充磁装置，其特征是，充磁装置还包括对应各外磁极分别设置的气缸，气缸活塞杆的自由端朝向外磁极，以能够驱动外磁极向内磁极端部方向移动。
  3. 根据权利要求2所述的永磁电机圆弧形磁瓦的充磁装置，其特征是，所述气缸位于磁轭环外部，外磁极背离内磁极的一端连接于磁轭环的内环。
  4. 根据权利要求2或3所述的永磁电机圆弧形磁瓦的充磁装置，其特征是，所述外磁极与内磁极两者相对的端面皆为弧形面，并分别与待充磁圆弧形磁瓦的两面形状相适应。
  5. 根据权利要求4所述的永磁电机圆弧形磁瓦的充磁装置，其特征是，所述内磁极的两弧形端面、外磁极朝向内磁极的弧形端面和待充磁的圆弧形磁瓦，三者弯曲弧度一致，且径向重合。
  6. 根据权利要求2-5任一项所述的永磁电机圆弧形磁瓦的充磁装置，其特征是，所述磁轭环为圆形或椭圆形。
  7. 一种权利要求2-6任一项所述充磁装置的充磁方法，其特征是，包括：
    将2组磁瓦分别置入内磁极两侧的充磁空间中；
    通过控制气缸动作，驱动外磁极向内磁极方向移动，直至外磁极、磁瓦与内磁极三者贴接；
    启动充磁电源使其瞬间放电，完成磁瓦充磁。
  8. 根据权利要求7所述的充磁方法，其特征是，各组磁瓦中，磁瓦数量为1个或多个，多个磁瓦之间为上下并列叠置。
PCT/CN2020/133772 2020-12-03 2020-12-04 永磁电机圆弧形磁瓦的充磁装置及径向充磁方法 WO2022116127A1 (zh)

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JPS61189157A (ja) * 1985-02-15 1986-08-22 Sanyo Electric Co Ltd マグネツト着磁装置
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JPS55156309A (en) * 1979-05-24 1980-12-05 Matsushita Electric Ind Co Ltd Magnetization of annular magnet
JPS5843167A (ja) * 1981-09-08 1983-03-12 Mitsubishi Electric Corp 界磁集合体の着磁装置
JPS61189157A (ja) * 1985-02-15 1986-08-22 Sanyo Electric Co Ltd マグネツト着磁装置
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CN115049027A (zh) * 2022-08-17 2022-09-13 深圳市恒拓高工业技术股份有限公司 基于神经网络识别电机良品的方法及装置
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