WO2020184811A1 - Axial winding-type motor - Google Patents

Axial winding-type motor Download PDF

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Publication number
WO2020184811A1
WO2020184811A1 PCT/KR2019/016521 KR2019016521W WO2020184811A1 WO 2020184811 A1 WO2020184811 A1 WO 2020184811A1 KR 2019016521 W KR2019016521 W KR 2019016521W WO 2020184811 A1 WO2020184811 A1 WO 2020184811A1
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coil
core
motor
wound
present
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French (fr)
Korean (ko)
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윤수한
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Eflow Co Ltd
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Eflow Co Ltd
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    • 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
    • H02K9/197—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/18—Windings for salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/22—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors consisting of hollow conductors

Definitions

  • the present invention relates to an axial winding type motor, and more particularly, to an axial winding type motor capable of effectively cooling heat generated from a coil.
  • a motor is composed of a stator having a core wound with a coil and a rotor with a permanent magnet having N and S poles.
  • a current is supplied to the coil, a magnetic field is generated, and the permanent magnet is generated by the generated magnetic field.
  • It is a device that converts electrical energy into mechanical energy by rotating.
  • An object of the present invention is to provide an axial winding type motor capable of directly cooling heat generated from a coil.
  • the axial winding type motor includes a rotor and a stator.
  • the stator includes a core and a coil.
  • the coil has a bar-shaped square shape with a square cross section, and is wound in one end in the width direction of the core, and is wound along the length direction of the core.
  • the coil is preferably a hollow tube so that the refrigerant flows therein.
  • the axial winding type motor includes a rotor and a stator.
  • the stator includes a core and a coil.
  • the coil is a hollow tube so that the refrigerant flows therein and is wound around the core.
  • the coil wound around the core is made of a hollow tube and a refrigerant flows inside the tube, heat generated from the coil can be directly absorbed and cooled. Therefore, it is possible to prevent damage due to heat generation of the coil, thereby improving the durability of the motor and preventing breakdown of peripheral parts.
  • the cross section of the coil wound around the core is in the shape of a square bar shape and is wound in one end in the width direction of the core, and is wound along the length direction of the core. In this case, it is possible to increase the efficiency of the motor.
  • FIG. 1 is a perspective view in which a coil of an embodiment is wound on a core of an axial winding motor according to the present invention
  • FIG. 2 is a perspective view of a core in which the coil of the embodiment shown in FIG. 1 is wound once,
  • Figure 3 is a front view of the embodiment shown in Figure 1,
  • Figure 4 is a perspective view of the coil of another embodiment winding the core of the axial winding type motor according to the present invention.
  • FIGS. 1 to 3 An embodiment of an axial winding type motor according to the present invention will be described with reference to FIGS. 1 to 3.
  • the axial winding type motor according to the present invention includes a rotor and a stator. Since the rotor is the same as that disclosed in the conventional motor, detailed description will be omitted.
  • the stator includes a core 10 and a coil 20.
  • a plurality of cores 10 are disposed at regular intervals in the circumferential direction around the motor shaft.
  • the coil 20 is made of a hollow tube in which a cooling passage 21 is formed so that the refrigerant flows therein, and is wound in one end in the width direction of the core 10 (in the direction of arrow A). It is wound around the circumference along the length direction (arrow B direction).
  • the coil 20 may be multi-stage winding in the width direction (arrow A direction), in this case, there may be a lot of friction loss when the coolant flows inside the coil 20, so in this embodiment, it is in the width direction (arrow A direction). It was made to be wound in one stage. So, if there is not much friction loss, it can be wound in multiple stages.
  • the cooling flow path 21 of the coil 20 surrounds the entire outer surface of the core 10 so as to be connected to each other in the longitudinal direction (arrow B direction). Therefore, when the refrigerant flows into one end (20a) of the coil (20), the refrigerant moves along the longitudinal direction (arrow B direction) of the core (10) to cool the heat generated in the coil (20) and It is discharged to the outside through the other end (20b). Thus, the heat generated by the coil 20 can be cooled directly over the entire core 10.
  • the cooling structure of the motor was not a method of directly cooling the coil, there was a limitation in effectively cooling the heat generated from the coil, but in this embodiment, the refrigerant flows directly into the coil 20 to cool the coil 20 Therefore, the heat generated by the motor can be effectively cooled.
  • FIG. 4 is another embodiment of an axial winding type motor according to the present invention. Another embodiment of the axial winding type motor according to the present invention will be described with reference to FIG. 4.
  • the coil 20 of the embodiment shown in FIG. 1 is formed as a hollow tube in which a cooling channel 21 is formed so that the refrigerant flows therein, but the coil 20 shown in FIG. 4 has a rectangular cross section. It is formed in a square shape. In this case, it is possible to increase the efficiency of the motor.
  • the remaining components are the same as those of the embodiment shown in FIG. 1, and thus detailed descriptions thereof will be omitted.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

The present invention relates to a motor and, more specifically, to a motor capable of effectively cooling heat generated by a coil without having a separate cooling member. The axial winding-type motor according to the present invention comprises: a rotor; and a stator. Here, the stator has a core and a coil. The coil has a rectangular bar-shaped and flat-angled cross section and is wound with one end in the width direction of the core, and then wound along the longitudinal direction of the core. According to the present invention, the coil wound around the core is formed of a hollow tube, and when a refrigerant flows inside the tube, heat generated by the coil can be directly absorbed and cooled. Therefore, it is possible to prevent damage caused by heat generation of the coil, thereby improving durability of the motor and preventing failure of peripheral parts. In addition, according to the present invention, the cross section of the coil wound around the core is rectangular bar-shaped and flat-angled and is wound with one end in the width direction of the core and wound along the longitudinal direction of the core. In this case, efficiency of the motor can be increased.

Description

축방향 권선형 모터Axial winding motor

본 발명은 축방향 권선형 모터에 대한 것으로서, 더욱 상세하게는 코일에서 발생하는 열을 효과적으로 냉각시킬 수 있는 축방향 권선형 모터에 대한 것이다. The present invention relates to an axial winding type motor, and more particularly, to an axial winding type motor capable of effectively cooling heat generated from a coil.

일반적으로 모터는 코일이 권선된 코어를 구비한 스테이터와, N,S극을 갖는 영구자석을 구비한 로터로 구성되며, 코일에 전류가 공급되면 자기장이 발생하고, 발생된 자기장에 의하여 영구자석이 회전을 하여 전기적 에너지를 기계적 에너지로 변환시키는 장치이다. In general, a motor is composed of a stator having a core wound with a coil and a rotor with a permanent magnet having N and S poles. When a current is supplied to the coil, a magnetic field is generated, and the permanent magnet is generated by the generated magnetic field. It is a device that converts electrical energy into mechanical energy by rotating.

코일에 전류가 공급되어 모터가 작동되면, 코어에 권선된 코일에서 열이 발생된다. 모터의 작동으로 장시간 발생되는 열은 모터의 수명을 단축시키고 모터의 출력에 영향을 줄 뿐만 아니라 주변부품의 고장을 유발하게 된다. When current is supplied to the coil and the motor is operated, heat is generated from the coil wound around the core. The heat generated for a long time due to the operation of the motor shortens the life of the motor, affects the output of the motor, and causes failure of peripheral parts.

종래에는 상기의 문제를 해결하기 위하여 모터하우징에 냉각수가 이동하는 유로를 형성하고, 모터하우징 내부에 방열부재를 설치하여 코일에서 발생된 열을 냉각시켰다. 그러나 종래의 모터의 냉각구조는 코일을 직접 냉각하는 방식이 아니므로 코일에서 발생된 열을 효과적으로 냉각시키는 데는 한계가 있었다. Conventionally, in order to solve the above problem, a flow path through which cooling water moves is formed in the motor housing, and heat generated from the coil is cooled by installing a heat dissipating member inside the motor housing. However, since the cooling structure of the conventional motor does not directly cool the coil, there is a limit to effectively cooling the heat generated from the coil.

대한민국 공개특허 제10-2014-0011449호(공개일 2014.01.28)Republic of Korea Patent Publication No. 10-2014-0011449 (published on 2014.01.28)

본 발명은 상기의 문제점을 해결하기 위한 것이다. 본 발명은 코일에서 발생하는 열을 직접 냉각시킬 수 있는 축방향 권선형 모터를 제공하는 것을 목적으로 한다. The present invention is to solve the above problems. An object of the present invention is to provide an axial winding type motor capable of directly cooling heat generated from a coil.

본 발명에 따른 축방향 권선형 모터는 로터와 스테이터를 포함한다. 여기서 상기 스테이터는 코어와 코일을 구비한다. 상기 코일은 단면이 사각형인 바형태의 평각모양이며 상기 코어의 폭방향으로 하나의 단으로 권선되어 상기 코어의 길이방향을 따라 권선된다. The axial winding type motor according to the present invention includes a rotor and a stator. Here, the stator includes a core and a coil. The coil has a bar-shaped square shape with a square cross section, and is wound in one end in the width direction of the core, and is wound along the length direction of the core.

또한, 상기의 축방향 권선형 모터에 있어서, 상기 코일은 내부에 냉매가 흐를 수 있도록 중공의 관으로 되는 것이 바람직하다. In addition, in the above-described axial winding type motor, the coil is preferably a hollow tube so that the refrigerant flows therein.

본 발명에 따른 축방향 권선형 모터는 로터와 스테이터를 포함한다. 여기서 상기 스테이터는 코어와 코일을 구비한다. 상기 코일은 내부에 냉매가 흐를 수 있도록 중공의 관으로 되어 상기 코어에 권선된다. The axial winding type motor according to the present invention includes a rotor and a stator. Here, the stator includes a core and a coil. The coil is a hollow tube so that the refrigerant flows therein and is wound around the core.

본 발명에 의하면, 코어에 권선되는 코일이 중공의 관으로 이루어지고, 관 내부에 냉매를 흘려보내면, 코일에서 발생하는 열을 직접 흡수 및 냉각시킬 수 있다. 그래서 코일의 발열로 인한 손상을 방지하여 모터의 내구성을 향상시키고 주변 부품의 고장을 방지할 수 있다. According to the present invention, when the coil wound around the core is made of a hollow tube and a refrigerant flows inside the tube, heat generated from the coil can be directly absorbed and cooled. Therefore, it is possible to prevent damage due to heat generation of the coil, thereby improving the durability of the motor and preventing breakdown of peripheral parts.

또한, 본 발명에 의하면, 코어에 권선되는 코일의 단면이 사각형인 바형태의 평각모양이며 코어의 폭방향으로 하나의 단으로 권선되어 코어의 길이방향을 따라 권선된다. 이 경우, 모터의 효율을 증가시킬 수 있다. In addition, according to the present invention, the cross section of the coil wound around the core is in the shape of a square bar shape and is wound in one end in the width direction of the core, and is wound along the length direction of the core. In this case, it is possible to increase the efficiency of the motor.

도 1은 본 발명에 따른 축방향 권선형 모터의 코어에 일 실시예의 코일이 권선된 사시도, 1 is a perspective view in which a coil of an embodiment is wound on a core of an axial winding motor according to the present invention;

도 2는 도 1에 도시된 실시예의 코일이 1회전 권선된 코어의 사시도, FIG. 2 is a perspective view of a core in which the coil of the embodiment shown in FIG. 1 is wound once,

도 3은 도 1에 도시된 실시예의 정면도, Figure 3 is a front view of the embodiment shown in Figure 1,

도 4는 본 발명에 따른 축방향 권선형 모터의 코어에 다른 실시예의 코일이 권선 사시도이다.Figure 4 is a perspective view of the coil of another embodiment winding the core of the axial winding type motor according to the present invention.

10 : 코어 20 : 코일10: core 20: coil

20a : 일단 20b : 타단20a: first 20b: the other end

21 : 냉각유로21: cooling flow path

도 1 내지 도 3을 참조하여 본 발명에 따른 축방향 권선형 모터의 일 실시예를 설명한다. An embodiment of an axial winding type motor according to the present invention will be described with reference to FIGS. 1 to 3.

본 발명에 따른 축방향 권선형 모터는 로터와, 스테이터를 포함한다. 로터는 종래의 모터에 개시된 것과 동일하므로 자세한 설명은 생략한다. The axial winding type motor according to the present invention includes a rotor and a stator. Since the rotor is the same as that disclosed in the conventional motor, detailed description will be omitted.

스테이터는 코어(10)와, 코일(20)을 구비한다. The stator includes a core 10 and a coil 20.

코어(10)는 모터 샤프트를 중심으로 원주 방향을 따라 일정간격 이격하여 복수개가 배치된다. A plurality of cores 10 are disposed at regular intervals in the circumferential direction around the motor shaft.

코일(20)은 내부에 냉매가 흐를 수 있도록 냉각유로(21)가 형성된 중공의 관으로 이루어지며, 코어(10)의 폭방향(화살표 A방향)으로 하나의 단으로 권선되어 코어(10)의 둘레를 길이방향(화살표 B방향)을 따라 감싸도록 권선된다. 코일(20)이 폭방향(화살표 A방향)으로 다단 권선될 수 있지만, 이 경우에는 냉각수가 코일(20) 내부로 흐를 때 마찰 손실이 많을 수 있으므로 본 실시예에서는 폭방향(화살표 A방향)으로 하나의 단으로 권선되도록 하였다. 그래서 마찰손실이 많지 않을 경우에는 다단으로 권선할 수 있다. The coil 20 is made of a hollow tube in which a cooling passage 21 is formed so that the refrigerant flows therein, and is wound in one end in the width direction of the core 10 (in the direction of arrow A). It is wound around the circumference along the length direction (arrow B direction). Although the coil 20 may be multi-stage winding in the width direction (arrow A direction), in this case, there may be a lot of friction loss when the coolant flows inside the coil 20, so in this embodiment, it is in the width direction (arrow A direction). It was made to be wound in one stage. So, if there is not much friction loss, it can be wound in multiple stages.

본 실시예의 경우, 코일(20)의 냉각유로(21)가 코어(10)의 외면 전체를 길이방향(화살표 B방향)으로 서로 이어지게 감싸게 된다. 따라서 코일(20)의 일단(20a)으로 냉매가 유입되면, 냉매가 코어(10)의 길이방향(화살표 B방향)을 따라 이동하면서 코일(20)에서 발생되는 열을 냉각시키고 코일(20)의 타단(20b)을 통해 외부로 배출된다. 그래서 코일(20)에서 발생되는 열을 코어(10) 전체에 걸쳐 직접 냉각시킬 수 있다. In this embodiment, the cooling flow path 21 of the coil 20 surrounds the entire outer surface of the core 10 so as to be connected to each other in the longitudinal direction (arrow B direction). Therefore, when the refrigerant flows into one end (20a) of the coil (20), the refrigerant moves along the longitudinal direction (arrow B direction) of the core (10) to cool the heat generated in the coil (20) and It is discharged to the outside through the other end (20b). Thus, the heat generated by the coil 20 can be cooled directly over the entire core 10.

종래에는 모터의 냉각구조가 코일을 직접 냉각하는 방식이 아니어서 코일에서 발생된 열을 효과적으로 냉각시키는데 한계가 있었으나, 본 실시예의 경우, 냉매가 코일(20) 내부에 직접 흘러서 코일(20)을 냉각시키므로 모터에서 발생되는 열을 효과적으로 냉각시킬 수 있다. Conventionally, since the cooling structure of the motor was not a method of directly cooling the coil, there was a limitation in effectively cooling the heat generated from the coil, but in this embodiment, the refrigerant flows directly into the coil 20 to cool the coil 20 Therefore, the heat generated by the motor can be effectively cooled.

도 4는 본 발명에 따른 축방향 권선형 모터의 다른 실시예이다. 도 4를 참조하여 본 발명에 따른 축방향 권선형 모터의 다른 실시예를 설명한다. 4 is another embodiment of an axial winding type motor according to the present invention. Another embodiment of the axial winding type motor according to the present invention will be described with reference to FIG. 4.

도 1에 도시된 실시예의 코일(20)은 내부에 냉매가 흐를 수 있도록 냉각유로(21)가 형성된 중공의 관으로 형성되지만, 도 4에 도시된 코일(20)은 단면이 사각형인 바형태의 평각모양으로 형성된다. 이 경우, 모터의 효율을 증가시킬 수 있다. 나머지 구성요소는 도 1에 도시된 실시예와 동일하므로 자세한 설명은 생략한다. The coil 20 of the embodiment shown in FIG. 1 is formed as a hollow tube in which a cooling channel 21 is formed so that the refrigerant flows therein, but the coil 20 shown in FIG. 4 has a rectangular cross section. It is formed in a square shape. In this case, it is possible to increase the efficiency of the motor. The remaining components are the same as those of the embodiment shown in FIG. 1, and thus detailed descriptions thereof will be omitted.

Claims (3)

로터와, 스테이터를 포함하는 축방향 권선형 모터에 있어서, In the axial winding type motor comprising a rotor and a stator, 상기 스테이터는 코어와, 단면이 사각형인 바형태의 평각모양이며 상기 코어의 폭방향으로 하나의 단으로 권선되어 상기 코어의 길이방향을 따라 권선된 코일을 구비하는 것을 특징으로 하는 축방향 권선형 모터. The stator is an axial winding motor, characterized in that it has a core and a coil of a bar shape having a square cross section and wound in one end in the width direction of the core and wound along the length direction of the core. . 제1항에 있어서, The method of claim 1, 상기 코일은 내부에 냉매가 흐를 수 있도록 중공의 관으로 된 것을 특징으로 하는 축방향 권선형 모터. The coil is an axial winding type motor, characterized in that the hollow tube to allow the refrigerant to flow therein. 로터와, 스테이터를 포함하는 축방향 권선형 모터에 있어서, In the axial winding type motor comprising a rotor and a stator, 상기 스테이터는 코어와, 내부에 냉매가 흐를 수 있도록 중공의 관으로 되어 상기 코어에 권선된 코일을 구비하는 것을 특징으로 하는 축방향 권선형 모터. The stator is an axial winding type motor, characterized in that it comprises a core and a coil wound around the core as a hollow tube to allow the refrigerant to flow therein.
PCT/KR2019/016521 2019-03-08 2019-11-28 Axial winding-type motor Ceased WO2020184811A1 (en)

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KR20190026919 2019-03-08

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002335648A (en) * 2001-04-20 2002-11-22 Alstom Cooling of electric machine
JP2004320974A (en) * 2003-04-04 2004-11-11 Nissan Motor Co Ltd Stator cooling structure
KR20090004694A (en) * 2007-07-03 2009-01-12 제너럴 일렉트릭 캄파니 Assembly and method for magnetizing the permanent magnet rotor of an electric machine
JP2009033898A (en) * 2007-07-27 2009-02-12 Nissan Motor Co Ltd Cooling structure of rotating electric machine
KR20140005159A (en) * 2010-10-18 2014-01-14 라펜란난 테크닐리넨 일리오피스토 A stator of an electrical machine and an electrical machine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002335648A (en) * 2001-04-20 2002-11-22 Alstom Cooling of electric machine
JP2004320974A (en) * 2003-04-04 2004-11-11 Nissan Motor Co Ltd Stator cooling structure
KR20090004694A (en) * 2007-07-03 2009-01-12 제너럴 일렉트릭 캄파니 Assembly and method for magnetizing the permanent magnet rotor of an electric machine
JP2009033898A (en) * 2007-07-27 2009-02-12 Nissan Motor Co Ltd Cooling structure of rotating electric machine
KR20140005159A (en) * 2010-10-18 2014-01-14 라펜란난 테크닐리넨 일리오피스토 A stator of an electrical machine and an electrical machine

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