WO2022041117A1 - 平衡板和内转子电机 - Google Patents

平衡板和内转子电机 Download PDF

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Publication number
WO2022041117A1
WO2022041117A1 PCT/CN2020/112102 CN2020112102W WO2022041117A1 WO 2022041117 A1 WO2022041117 A1 WO 2022041117A1 CN 2020112102 W CN2020112102 W CN 2020112102W WO 2022041117 A1 WO2022041117 A1 WO 2022041117A1
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Prior art keywords
balance plate
rotor
balance
plate
axial direction
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PCT/CN2020/112102
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English (en)
French (fr)
Inventor
刘磊
黄建成
李越
钟虎
田振旻
Original Assignee
舍弗勒技术股份两合公司
刘磊
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Application filed by 舍弗勒技术股份两合公司, 刘磊 filed Critical 舍弗勒技术股份两合公司
Priority to PCT/CN2020/112102 priority Critical patent/WO2022041117A1/zh
Publication of WO2022041117A1 publication Critical patent/WO2022041117A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/04—Balancing means

Definitions

  • the present invention relates to the field of electrical machines (motors and/or generators), and in particular to inner rotor electrical machines and their balance plates.
  • the motor is likely to generate heat during the rotation process.
  • a common motor heat dissipation method configures a cooling liquid pipeline for the motor rotor.
  • such a heat dissipation device has a complex structure and high cost.
  • Chinese patent CN207459903U discloses a motor and its rotor balance plate.
  • fan blades are arranged on the outer side of the rotor balance plate to increase the air flow near the rotor, thereby helping to dissipate heat.
  • the heat dissipation effect of the rotor balance plate in this patent is limited, and the structure of the rotor balance plate is relatively complex and occupies a large space.
  • the purpose of the present invention is to overcome or at least alleviate the above-mentioned deficiencies of the prior art, and to provide a balance plate and an inner rotor motor including the balance plate.
  • a balance plate for being disposed at an end portion in the axial direction of a rotor of an inner rotor motor, the balance plate having a disc shape, the balance plate including a plate body and a The plate body is connected to a plurality of blades, wherein,
  • the plurality of blades are spaced apart in the circumferential direction of the rotor, and an opening is formed between two adjacent blades,
  • the vanes are at least partially recessed relative to the plate body to allow the balance plate and the A cavity is formed between the rotors,
  • the cavity communicates with the opening on at least one side in the circumferential direction.
  • both sides of the cavity in the circumferential direction communicate with one opening.
  • the plate body includes an inner ring and an outer ring both of which are annular, the outer ring is located on the outer circumference of the inner ring, and in the radial direction of the balance plate, the vanes are located at the between the inner ring and the outer ring to connect the inner ring and the outer ring.
  • the thickness of the blade is smaller than the thickness of the plate body in the axial direction.
  • At least one of the two surfaces of the vane in the axial direction is non-parallel to a plane perpendicular to the axial direction.
  • the vanes do not protrude from the plate body.
  • the balance plate is a casting.
  • the balancing plate has a number of balancing holes in the portion located on the outer periphery of the blade.
  • an inner rotor motor which includes a rotor, a stator, and two balance plates, the balance plates are connected to the rotor in a non-rotatable manner on both sides of the rotor in the axial direction. , the rotor and the balance plate are located on the inner circumference of the stator, wherein,
  • the balance plate is a balance plate according to the present invention.
  • the rotor has a through hole passing through in the axial direction, and the opening of the balance plate at least partially coincides with the through hole in the radial and circumferential directions of the rotor.
  • the structure is simple, and the heat dissipation adjustment capability of the motor rotor is strong.
  • the inner rotor motor according to the invention has the same advantages.
  • FIG. 1 shows an axial cross-sectional view of an inner rotor electric machine according to an embodiment of the present invention.
  • FIG. 2 shows a schematic diagram of the installation of a balance plate and a rotor according to an embodiment of the present invention.
  • FIG. 3 shows a schematic view of FIG. 2 in axial section.
  • Figure 4 shows a schematic diagram of a balance plate according to one embodiment of the present invention.
  • FIG. 5 shows the schematic diagram of FIG. 4 in radial section.
  • Ep balance plate 10 inner ring; 20 outer ring; 30 blade; 40 opening; 50 cavity;
  • A represents the axial direction of the rotor balance plate, which is consistent with the axial direction of the rotor of the motor;
  • R represents the radial direction of the rotor balance plate, which is the same as the radial direction of the rotor of the motor. Consistent.
  • an inner rotor motor E also referred to as a motor E for short
  • its balance plate Ep according to the present invention
  • a motor E includes a stator Es, a rotor Er, and a rotor balance plate Ep.
  • the stator Es is arranged in a torsionally (non-rotatable) manner relative to the casing of the motor E, and the rotor Er is arranged on the inner circumference of the stator Es (so the motor E is also called an inner rotor motor).
  • the rotor Er can rotate relative to the stator Es, thereby driving the rotating shaft connected with the rotor Er to rotate, or the rotating shaft drives the rotor Er to rotate relative to the stator Es.
  • a balance plate Ep is provided on both sides of the axial direction A of the rotor Er, and the balance plate Ep is connected to the rotor Er in a non-rotatable manner, that is, during the rotation of the rotor Er, the balance plate Ep will follow the rotor Er to rotate.
  • the balance plate Ep is substantially disc-shaped, and has a through hole in the middle for the rotating shaft to pass through.
  • the balance plate Ep includes a plate body including an inner ring 10 and an outer ring 20 and blades 30 . Both the inner ring 10 and the outer ring 20 are annular, the outer ring 20 is located on the outer peripheral side of the inner ring 10 , and the vanes 30 are located between the inner ring 10 and the outer ring 20 in the radial direction R and connect the inner ring 10 and the outer ring 20 .
  • Each vane 30 extends in the radial direction R substantially along the radial direction R of the balance plate Ep.
  • An opening 40 is formed between two adjacent vanes 30 , and the opening 40 allows the balance plate Ep to pass through in the axial direction A. As shown in FIG.
  • the blades 30 can agitate the air and make the air pass through the balance plate Ep through the opening 40, so as to facilitate the air flow near the rotor Er and help the rotor Er to dissipate heat.
  • the rotor Er has a plurality of through holes (also called weight-reducing holes) extending along the axial direction A.
  • the opening 40 at least partially coincides with the through holes of the rotor Er in the radial direction R and the circumferential direction, so as to be The air stirred by the blades 30 easily passes through the through holes of the rotor Er, which is beneficial to the heat dissipation of the rotor Er.
  • the two sides (inner side and outer side) of the blade 30 in the axial direction A are not parallel to the plane perpendicular to the axial direction A, and the inclined blade 30 is more conducive to agitating the air.
  • the side of the balance plate Ep facing the rotor Er is called the inner side of the balance plate Ep
  • the side of the balance plate Ep facing away from the rotor Er is called the outer side of the balance plate Ep.
  • the left side of the balance plate Ep is its outer side
  • the right side of the balance plate Ep is its inner side
  • the upper side of the balance plate Ep is the outer side
  • the lower side of the balance plate Ep is the inner side.
  • the surface of the blade 30 facing the inner side of the balance plate Ep is at least partially (in this embodiment completely) recessed toward the outer side of the balance plate Ep, so that in the A cavity 50 is formed on the inner side of the balance plate Ep.
  • the recessed vanes 30 allow air to flow through the cavity 50 between the vanes 30 and the rotor to carry more heat away.
  • the cavity 50 in the circumferential direction preferably needs to satisfy that at least one side of the cavity 50 in the circumferential direction is communicated with one opening 40, so that the Air can flow to cavity 50 through opening 40 .
  • the thickness of the blade 30 in the axial direction A is smaller than the thickness of the inner ring 10 or the outer ring 20 in the axial direction A. More preferably, the blade 30 does not protrude from the outer side of the main body of the balance plate Ep in the axial direction A, or only partially protrudes from the outer side surface of the main body of the balance plate Ep, so that the space occupied by the balance plate Ep in the axial direction A is small. .
  • the balance plate Ep is a metal casting.
  • a number of balance holes may be formed on the main body of the balance plate Ep.
  • the balance hole is located in the outer ring 20, and more preferably, the balance hole does not penetrate the outer ring 20 in the axial direction A, but is formed as a concave structure on the outer side of the outer ring 20.
  • the balance hole is machined in real-time machining.
  • the balance plate Ep according to the present invention can agitate the air in the process of following the rotation of the rotor Er, and make the air flow through the inner and axial end faces of the rotor Er, taking away the air generated by the rotor Er, or the rotor Er and the stator Es heat.
  • the balance plate Ep according to the present invention has a simple structure and occupies a small space in the axial direction A.
  • the motor E according to the present invention does not need to install additional components and can have good heat dissipation performance.
  • the present invention does not limit the number of blades 30 on each balance plate Ep.
  • the present invention does not limit the size (angle of coverage) of each blade 30 in the circumferential direction.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

一种平衡板，其用于设置在内转子电机的转子(Er)的轴向(A)上的端部，所述平衡板呈圆盘形，所述平衡板包括板主体和与所述板主体相连的多个叶片(30)，所述多个叶片(30)在所述转子(Er)的周向上间隔开地排布，相邻的两个所述叶片(30)之间形成开口(40)，在所述平衡板的所述轴向(A)上的一侧，所述叶片(30)至少部分地相对于所述板主体凹进，以在所述平衡板安装到所述转子(Er)时在所述平衡板和所述转子(Er)之间形成空腔(50)，所述空腔(50)在所述周向上的至少一侧与所述开口(40)相连通。本发明还提供一种内转子电机。

Description

平衡板和内转子电机 技术领域
本发明涉及电机(电动机和/或发电机)领域，且特别地涉及内转子电机及其平衡板。
背景技术
电机在转动过程中容易产生热量，常用的电机散热方式例如为电机转子配置冷却液管路，然而，这种散热装置结构复杂、成本高。
中国专利CN207459903U公开了一种电机及其转子平衡板，该专利通过在转子平衡板的外侧设置扇叶，以增加转子附近的空气流动，从而帮助散热。然而，该专利中的转子平衡板的散热效果有限，且转子平衡板的结构较复杂、所占空间较大。
发明内容
本发明的目的在于克服或至少减轻上述现有技术存在的不足，提供一种平衡板和包括该平衡板的内转子电机。
根据本发明的第一方面，提供一种平衡板，其用于设置在内转子电机的转子的轴向上的端部，所述平衡板呈圆盘形，所述平衡板包括板主体和与所述板主体相连的多个叶片，其中，
所述多个叶片在所述转子的周向上间隔开地排布，相邻的两个所述叶片之间形成开口，
在所述平衡板的所述轴向上的一侧，所述叶片至少部分地相对于所述板主体凹进，以在所述平衡板安装到所述转子时在所述平衡板和所述转子之间形成空腔，
所述空腔在所述周向上的至少一侧与所述开口相连通。
在至少一个实施方式中，所述空腔的所述周向上的两侧均与一个开口相连通。
在至少一个实施方式中，所述板主体包括均为圆环形的内圈和外圈，所述外圈位于所述内圈的外周，在所述平衡板的径向上，所述叶片位于所述内圈和所述外圈之间以连接所述内圈和所述外圈。
在至少一个实施方式中，在所述轴向上，所述叶片的厚度小于所述板主体的厚度。
在至少一个实施方式中，所述叶片在所述轴向上的两个表面中的至少一者与垂直于所述轴向的平面不平行。
在至少一个实施方式中，在所述轴向上的两侧，所述叶片均不凸出于所述板主体。
在至少一个实施方式中，所述平衡板为铸件。
在至少一个实施方式中，所述平衡板在位于所述叶片的外周的部分具有若干平衡孔。
根据本发明的第二方面，提供一种内转子电机，其包括转子、定子和两个平衡板，所述平衡板在所述转子的轴向上的两侧与所述转子不能相对转动地连接，所述转子和所述平衡板位于所述定子的内周，其中，
所述平衡板为根据本发明的平衡板。
在至少一个实施方式中，所述转子具有在所述轴向上贯通的通孔，所述平衡板的所述开口在所述转子的径向和周向上与所述通孔至少部分地重合。
根据本发明的平衡板结构简单，对电机转子的散热调节能力强。根据本发明的内转子电机具有同样的优点。
附图说明
图1示出了根据本发明的一个实施方式的内转子电机的轴向剖视图。
图2示出了根据本发明的一个实施方式的平衡板与转子安装的示意图。
图3示出了图2的沿轴向剖开的示意图。
图4示出了根据本发明的一个实施方式的平衡板的示意图。
图5示出了图4的沿径向剖开的示意图。
附图标记说明：
E电机；Er转子；Er1转子通孔；Es定子；
Ep平衡板；10内圈；20外圈；30叶片；40开口；50空腔；
A轴向；R径向。
具体实施方式
下面参照附图描述本发明的示例性实施方式。应当理解，这些具体的说明仅用于示教本领域技术人员如何实施本发明，而不用于穷举本发明的所有可行的方式，也不用于限制本发明的范围。
除非特别说明，参照图1，A表示转子平衡板的轴向，该轴向A与电机的转子的轴向一致；R表示转子平衡板的径向，该径向R与电机的转子的径向一致。
参照图1至图5介绍根据本发明的内转子电机E(也简称电机E)及其平衡板Ep。
参照图1，根据本发明的电机E包括定子Es、转子Er和转子平衡板Ep。
定子Es相对于电机E的壳体抗扭地(不能相对转动地)设置，转子Er设置于定子Es的内周(因此电机E也叫内转子电机)。转子Er能相对于定子Es转动，进而带动与转子Er相连的转轴转动，或者转轴带动转子Er相对于定子Es转动。
转子Er的轴向A上的两侧各设有一个平衡板Ep，平衡板Ep与转子Er不能 相对转动地连接，即，在转子Er转动的过程中，平衡板Ep会跟随转子Er转动。
参照图2至图5，平衡板Ep呈大致盘状，其中部具有通孔以供转轴穿过。平衡板Ep包括板主体和叶片30，其中板主体包括内圈10和外圈20。内圈10和外圈20均呈环形，外圈20位于内圈10的外周侧，叶片30在径向R上位于内圈10和外圈20之间并连接内圈10和外圈20。
叶片30有多个(在本实施方式中为7个)，多个叶片30在周向上间隔开地排列。每个叶片30在径向R上大致沿平衡板Ep的径向R延伸。相邻的两个叶片30之间形成一个开口40，开口40使平衡板Ep在轴向A上贯通。
于是当平衡板Ep跟随转子Er转动时，叶片30能搅动空气、并使空气通过开口40穿过平衡板Ep，以利于转子Er附近的空气流动、帮助转子Er散热。
通常，转子Er具有多个沿轴向A延伸的通孔(也称减重孔)，优选地，开口40在径向R上和周向上至少部分地与转子Er的通孔重合，从而使被叶片30搅动的空气容易穿过转子Er的通孔、利于转子Er的散热。
优选地，叶片30在轴向A上的两个侧面(内侧面和外侧面)与垂直于轴向A的平面不平行，倾斜的叶片30更有利于搅动空气。
在轴向A上，将平衡板Ep的朝向转子Er的一侧称为平衡板Ep的内侧，将平衡板Ep的背向转子Er的一侧称为平衡板Ep的外侧。对于图3中的左侧的平衡板Ep，图中，该平衡板Ep的左侧为其外侧，该平衡板Ep的右侧为其内侧；对于图5所示的平衡板Ep，图中，该平衡板Ep的上侧为其外侧，该平衡板Ep的下侧为其内侧。
相比于板主体的朝向平衡板Ep的内侧的表面，叶片30的朝向平衡板Ep的内侧的表面至少部分地(在本实施方式中是完全地)向平衡板Ep的外侧凹进，从而在平衡板Ep的内侧形成空腔50。
由于板主体大致紧贴转子Er的轴向端面设置，凹陷的叶片30使得空气能流经位于叶片30和转子之间的空腔50，以带走更多的热量。
值得说明的是，在本实施方式中，由于叶片30的朝向平衡板Ep的内侧的 表面完全地凹进，因此空气能从开口40的周向上的两侧流入或流出空腔50，或者说，每一个空腔50的周向上的两侧均与一个开口40相连通。
若叶片30的朝向平衡板Ep的内侧的表面只是部分地凹进，则此时空腔50在周向上优选地需要满足：空腔50在周向上的至少一侧与一个开口40相连通，从而使空气能通过开口40流至空腔50。
优选地，叶片30在轴向A上的厚度小于内圈10或外圈20在轴向A上的厚度。更优选地，叶片30在轴向A上不凸出于、或是只部分地少量地凸出于平衡板Ep的主体的外侧面，从而平衡板Ep在轴向A上所占据的空间较小。
优选地，平衡板Ep为金属铸件。
值得说明的是，为实现平衡板Ep对电机的平衡性的调整功能，平衡板Ep的主体上可以形成有若干平衡孔(图未示)。优选地，平衡孔位于外圈20，且更优选地，平衡孔在轴向A上不贯穿外圈20、而是形成为在外圈20的外侧面的凹陷结构，这样的布置便于在制造装配电机E时以实时地机加工的方式加工平衡孔。
下面简单说明本发明的上述实施方式的部分有益效果。
(i)根据本发明的平衡板Ep能在跟随转子Er转动的过程中搅动空气，且使空气流过转子Er的内部和轴向端面，带走由转子Er，或者转子Er和定子Es产生的热量。
(ii)根据本发明的平衡板Ep结构简单，且在轴向A上占据的空间小。
(iii)根据本发明的电机E不需要安装额外的零部件而能具有良好的散热性能。
应当理解，上述实施方式仅是示例性的，不用于限制本发明。本领域技术人员可以在本发明的教导下对上述实施方式做出各种变型和改变，而不脱离本发明的范围。例如，
(i)本发明对于每个平衡板Ep上叶片30的数量不作限制。
(ii)本发明对于每个叶片30在周向上的尺寸(覆盖的角度)不作限制。

Claims (10)

  1. 一种平衡板，其用于设置在内转子电机的转子(Er)的轴向(A)上的端部，所述平衡板呈圆盘形，所述平衡板包括板主体和与所述板主体相连的多个叶片(30)，其中，
    所述多个叶片(30)在所述转子(Er)的周向上间隔开地排布，相邻的两个所述叶片(30)之间形成开口(40)，
    在所述平衡板的所述轴向(A)上的一侧，所述叶片(30)至少部分地相对于所述板主体凹进，以在所述平衡板安装到所述转子(Er)时在所述平衡板和所述转子(Er)之间形成空腔(50)，
    所述空腔(50)在所述周向上的至少一侧与所述开口(40)相连通。
  2. 根据权利要求1所述的平衡板，其特征在于，所述空腔(50)的所述周向上的两侧均与一个开口(40)相连通。
  3. 根据权利要求1所述的平衡板，其特征在于，所述板主体包括均为圆环形的内圈(10)和外圈(20)，所述外圈(20)位于所述内圈(10)的外周，在所述平衡板的径向(R)上，所述叶片(30)位于所述内圈(10)和所述外圈(20)之间以连接所述内圈(10)和所述外圈(20)。
  4. 根据权利要求1所述的平衡板，其特征在于，在所述轴向(A)上，所述叶片(30)的厚度小于所述板主体的厚度。
  5. 根据权利要求1所述的平衡板，其特征在于，所述叶片(30)在所述轴向(A)上的两个表面中的至少一者与垂直于所述轴向(A)的平面不平行。
  6. 根据权利要求1所述的平衡板，其特征在于，在所述轴向(A)上的两侧，所述叶片(30)均不凸出于所述板主体。
  7. 根据权利要求1所述的平衡板，其特征在于，所述平衡板为铸件。
  8. 根据权利要求1所述的平衡板，其特征在于，所述平衡板在位于所述 叶片(30)的外周的部分具有若干平衡孔。
  9. 一种内转子电机，其包括转子(Er)、定子(Es)和两个平衡板(Ep)，所述平衡板(Ep)在所述转子(Er)的轴向(A)上的两侧与所述转子(Er)不能相对转动地连接，所述转子(Er)和所述平衡板(Ep)位于所述定子(Es)的内周，其特征在于，
    所述平衡板(Ep)为根据权利要求1至8中任一项所述的平衡板。
  10. 根据权利要求9所述的内转子电机，其特征在于，所述转子(Er)具有在所述轴向(A)上贯通的通孔，所述平衡板(Ep)的所述开口(40)在所述转子(Er)的径向(R)和周向上与所述通孔至少部分地重合。
PCT/CN2020/112102 2020-08-28 2020-08-28 平衡板和内转子电机 WO2022041117A1 (zh)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201733178U (zh) * 2010-03-19 2011-02-02 永济新时速电机电器有限责任公司 导风平衡盘及发电机
JP2012105487A (ja) * 2010-11-11 2012-05-31 Komatsu Ltd 電動モータの冷却装置
CN203161648U (zh) * 2013-03-25 2013-08-28 Abb高压电机有限公司 导风平衡盘及包含其的电机或发电机
CN109861446A (zh) * 2019-02-18 2019-06-07 浙江龙芯电驱动科技有限公司 一种电机内冷却转子动平衡板结构
CN209016868U (zh) * 2018-10-10 2019-06-21 华域汽车电动系统有限公司 一种电机转子动平衡板

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201733178U (zh) * 2010-03-19 2011-02-02 永济新时速电机电器有限责任公司 导风平衡盘及发电机
JP2012105487A (ja) * 2010-11-11 2012-05-31 Komatsu Ltd 電動モータの冷却装置
CN203161648U (zh) * 2013-03-25 2013-08-28 Abb高压电机有限公司 导风平衡盘及包含其的电机或发电机
CN209016868U (zh) * 2018-10-10 2019-06-21 华域汽车电动系统有限公司 一种电机转子动平衡板
CN109861446A (zh) * 2019-02-18 2019-06-07 浙江龙芯电驱动科技有限公司 一种电机内冷却转子动平衡板结构

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