WO2019132261A1 - Appareil de refroidissement de moteur et automobile le comprenant - Google Patents

Appareil de refroidissement de moteur et automobile le comprenant Download PDF

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Publication number
WO2019132261A1
WO2019132261A1 PCT/KR2018/014450 KR2018014450W WO2019132261A1 WO 2019132261 A1 WO2019132261 A1 WO 2019132261A1 KR 2018014450 W KR2018014450 W KR 2018014450W WO 2019132261 A1 WO2019132261 A1 WO 2019132261A1
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WO
WIPO (PCT)
Prior art keywords
motor
cooling
hollow
air
rotor shaft
Prior art date
Application number
PCT/KR2018/014450
Other languages
English (en)
Korean (ko)
Inventor
유진호
Original Assignee
엠에이치기술개발 주식회사
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 엠에이치기술개발 주식회사 filed Critical 엠에이치기술개발 주식회사
Publication of WO2019132261A1 publication Critical patent/WO2019132261A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/06—Arrangement in connection with cooling of propulsion units with air cooling
    • 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
    • H02K1/32—Rotating 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
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H02K5/207—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium with openings in the casing specially adapted for ambient air
    • 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
    • H02K7/003—Couplings; Details of shafts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2205/00—Specific aspects not provided for in the other groups of this subclass relating to casings, enclosures, supports
    • H02K2205/09—Machines characterised by drain passages or by venting, breathing or pressure compensating means
    • 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

Definitions

  • the present invention relates to a motor cooling apparatus and an automobile having the motor cooling apparatus, and more particularly, The present invention relates to a motor cooling device capable of enhancing cooling efficiency by forced convection of air without a separate blowing fan and an automobile equipped with the motor cooling device.
  • a motor which is a main component of a hybrid vehicle or an electric vehicle, converts electric energy into mechanical energy.
  • the motor includes a housing, a stator mounted on the housing, and a rotor.
  • the inner housing and the outer housing are separately cast and the inner housing and the outer housing are press-fitted, sealed, or welded so as to form a cooling channel between the inner housing and the outer housing.
  • Korean Patent No. 10-1761677 (Jul. 20, 2017) 'cooling apparatus for a motor housing' has a cylindrical housing body in which a housing space for housing a motor is formed,
  • the cooling effect for the motor housing can be improved by providing a motor housing including a cover for closing the housing body and a cooling pipe embedded in the housing body and having a cooling fluid flowing therein, Sealing is realized and thermal cross-torque phenomenon can be prevented.
  • the prior art as described above causes the cooling fluid to flow through the cooling channel inside the motor housing to cool the motor. That is, the outer wall of the stator of the motor is in close contact with the inner wall of the motor housing to be heat-transferred, and the motor is cooled through the cooling channel inside the motor housing, so that only a water-cooled cooling structure is adopted.
  • the stator of the motor a plurality of magnetic pole portions are formed, and a space exists between the magnetic pole portions. The heat generated in the motor is present in the space between the magnetic pole portions of the stator and the air present in this space is in a state where there is no large flow,
  • Patent Document 1 Korean Patent Laid-Open Publication No. 10-2016-0023314
  • Patent Document 2 Korean Patent Publication No. 10-1761677 (Jul. 20, 2017)
  • the present invention provides a motor cooling apparatus capable of further improving the cooling efficiency by further including a motor internal cooling structure for forming an air flow path inside the motor in the motor housing cooling apparatus so as to force forced convection by rotation of the rotation shaft will be.
  • the present invention also provides an automobile having a motor housing cooling structure and a motor cooling device formed by combining a motor internal air convection cooling structure.
  • a convection passageway formed between a bottom surface of the rotor and the motor housing and between the motor housing cover and a space in which air is convected between the outer wall of the stator and the stator magnetic pole portion;
  • the hollow is hollow in which both sides of the rotor shaft are plugged and connected only between upper and lower air holes, and a plurality of air holes communicating with the outside are further formed on the bottom surface and the cover of the motor housing.
  • one of the upper and lower air holes is formed, and a plurality of the upper and lower air holes are formed on the other side.
  • the lower air hole formed adjacent to the wing portion is one, and the upper air hole is formed in plurality.
  • the upper and lower air holes are all formed in plural.
  • the wing portion is formed of one or a plurality of wing portions.
  • the upper and lower air passages of the rotor are formed through the hollow in the rotor shaft of the motor, and forced convection is performed by using the wing portion, so that the internal air is forcedly convected by the wing portion by the rotation of the rotor shaft, Since the space between the bottom surface of the housing and the upper lid and the rotor and the space between the outer wall of the motor stator and the magnetic pole portion and the convection path through the hollow are formed, the heated air inside the motor conveys and contacts the stator outer wall, So that the cooling efficiency of the motor can be improved by cooling the inside air.
  • the motor provided with the motor cooling device of the present invention is provided as a device for cooling motors of automobiles, particularly electric vehicles, hybrid vehicles, fuel cell automobiles, etc., thereby providing a motor vehicle equipped with the motor cooling device of the present invention .
  • the motor cooling apparatus according to the present invention provides the following effects.
  • a water-cooled cooling device having a cooling channel inside the motor housing and an air-cooled cooling device that enhances the cooling efficiency by forced convection of the air inside the motor are combined to provide forced convection of the air inside the motor, It is possible to effectively cool the heat exchanger.
  • one side of the hollow is opened to the outside, a plurality of air holes are formed in the upper side, and one air hole is formed beside the wings of the lower side so that the outside air can be introduced into the hollow or exhausted to the outside, The effect can be improved.
  • FIG. 1 is a schematic diagram showing a structure of a motor cooling apparatus according to the present invention.
  • Fig. 2 is a view showing the configuration of a motor rotor shaft in which a hollow is formed according to the present invention
  • FIG. 1 is a schematic view showing a structure of a motor cooling device according to the present invention
  • FIG. 2 is a view showing the construction of a motor rotor shaft in which a hollow is formed according to the present invention.
  • the motor is inserted and installed in the center of the stator 30 in which the rotor 20 fixed to the rotor shaft 10 is provided with a plurality of magnetic pole portions 31 on the outer wall 32.
  • a motor provided with the rotor 20 and the stator 30 is inserted and installed in the center of the motor housing 40 having the seat portion on which the motor is inserted and seated and the bottom surface 42 of the motor housing 40,
  • a bearing 60 is installed on the upper cover 41 and rotatably supports the rotor shaft 10 of the motor.
  • a cooling channel 50 is installed in the motor housing 40 so that the cooling fluid flows to cool the motor.
  • the hollow 100 is formed in the rotor shaft 10
  • the air holes 120 and 130 are formed in the upper and lower portions of the hollow 100
  • the wings (110) are formed in the holes (120).
  • a structure for forced convection of the air inside the motor is provided.
  • the rotor 20 is rotatably supported on the bottom surface 42 of the motor housing 40 and between the motor housing cover 41 and the outer wall 32 of the stator 30
  • a wing unit 110 for blowing air of the air-blowing unit AA.
  • the convection passage AA is a structure in which the stator magnetic pole portion 31 is coupled to the bottom surface 42 of the motor housing 40 and the outer lid 32 of the stator 30, And a space for forming a convection passage AA through which the air passes can be provided in the stator 30 and the upper lid 41.
  • the magnetic pole portion 31 of the stator 30 is formed as shown in the right- A plurality of magnetic pole portions 31 are spaced apart from each other to form a convection passage AA through which air flows.
  • the convection passage AA communicates the hollow 100 and the convection passage AA through the upper and lower air holes 120 and 130 of the hollow 100 formed in the rotor shaft 10, Air can be convected up and down.
  • the wing portion 110 since the wing portion 110 protrudes from the rotor shaft 10, the wing portion 110 blows the air in the convection passage AA by the rotation of the rotor shaft 10, And flows into the hollow 100 through the upper air hole 130 to be convected to the lower air hole 130.
  • the hollow (100) may be formed as a hollow through the upper and lower portions of the rotor shaft (10).
  • the outside air and the air of the convection passage (AA) inside the motor can flow with each other through the hollow (100) opened to the upper and lower portions, so that the cooling efficiency can be improved.
  • noise may be generated.
  • the hollow 100 has a hollow 100, which is open to the outside through one side of the rotor shaft 10 and the other side is a membrane.
  • the air in the hollow 100 flows out through the lower air holes 130 and flows into the convection passages AA and the air in the convection passage AA and the outside air can flow into the hollow 100 through the upper air hole 120 and can be convected through the upper air hole 120.
  • the inside air may be partially discharged to the outside or the outside air may be introduced into the inside through the opening portion.
  • the hollow 100 is hollow in which both ends of the rotor shaft 10 are both closed and connected only between the upper and lower air holes 120 and 130.
  • the hollow housing 100 includes the motor housing bottom surface 42 and the cover 41, A plurality of air holes (not shown) communicating with the outside are further formed. This forms a plurality of air holes communicating with the convection passage AA on the bottom surface 42 of the motor housing 40 and the lid 41 so that the convection passage AA and the air
  • the outside air can be discharged to the outside or the outside air can flow into the convection passage AA to improve the cooling efficiency.
  • the internal air can be forcedly convected without providing a separate blowing fan outside the motor.
  • the present invention is characterized in that only one of the upper and lower air holes 120 and 130 is formed, and a plurality of the upper and lower air holes 120 and 130 are formed on the other side. This is for the purpose of effectively inducing air inflow into the hollow (100) and air discharge, thereby inducing forced convection.
  • one lower air hole 130 formed adjacent to the wing 110 is formed, and a plurality of upper air holes 120 are formed. That is, only one lower air hole 130 adjacent to the wing portion 110 is formed to discharge the air in the hollow 100 into the convection passage AA, and a plurality of air holes 130 So that air in the convection passage AA can be easily sucked into the hollow 100.
  • the present invention is not limited thereto, and the upper and lower air holes 120 and 130 may be formed in plurality.
  • the upper and lower air holes 120 and 130 of the hollow 100 can be selectively formed in a plurality of upper and lower portions, one on the lower side, and a plurality of upper portions on the upper side in consideration of the characteristics and efficiency of the motor.
  • the wing portions 110 may be formed of one or a plurality of wing portions.
  • the present invention is not limited to this, and one or more wings 110 may be formed. This makes it possible to design the size and the number of the vanes 110 within a range that does not affect the rotational force or the center of gravity of the rotor shaft 10 and to perform a blowing fan function for effectively blowing air in the convection passage AA If possible.
  • the present invention includes a motor housing cooling apparatus in which a cooling channel (50) is provided in a motor housing (40).
  • the cooling channel 50 installed in the motor housing 40 may be configured such that a spiral cooling channel 50 is wound around the outer wall of the motor housing 40 in a conventional manner,
  • the structure of the cooling channel 50 embedded in the body of the motor housing 40 is a preferred embodiment of the present invention.
  • the cross section of the cooling channel 50 which is embedded in the motor housing 40, may be polygonal, such as circular, square, or rhombic. It is desirable that the shape of the motor so as to maximize the area of contact with the outer wall of the stator 30 is desired.
  • the cooling channel 50 embedded in the motor housing 40 may be a single pipe, but may be a double pipe as shown in FIG. 1, or a triple pipe.
  • a cooling channel of a double pipe as shown in FIG. 1 it is possible to use both of the two cooling channels to flow the cooling fluid, to allow the cooling fluid to flow to the cooling channel closer to the stator, So as to prevent noise.
  • a cooling apparatus for cooling the motor by the cooling fluid flowing through the cooling channel 50 of the motor housing 40 is mainly operated.
  • the upper and lower air passages of the rotor are formed in the rotor shaft of the motor through the hollow and forced convection is performed by using the wing portion, whereby the inner air is forcefully convected by the wing portion by the rotation of the rotor shaft, Since the space between the upper cover and the rotor, the space between the outer wall of the motor stator and the magnetic pole portion, and the convection path through the hollow are formed, the heated air inside the motor is convected and brought into contact with the outer wall of the stator, The cooling efficiency of the motor can be improved by cooling the internal air.
  • the motor provided with the motor cooling device of the present invention is provided as a device for cooling motors of automobiles, particularly electric vehicles, hybrid vehicles, fuel cell automobiles, etc., thereby providing a motor vehicle equipped with the motor cooling device of the present invention .

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

Selon la présente invention, un moteur est installé par insertion dans un carter de moteur ayant un espace de réception dans lequel le moteur est reçu ; un canal de refroidissement à travers lequel s'écoule un fluide de refroidissement est formé dans le carter de moteur ; un espace creux est formé dans un arbre de rotor du moteur ; des passages de convection sont formés entre la surface inférieure du carter de moteur et un rotor, entre une partie de pôle magnétique d'un stator de moteur et la paroi extérieure du stator, et entre le rotor et un couvercle de carter de moteur ; un espace creux et des trous d'aération supérieur et inférieur sont formés dans l'arbre de rotor de façon à permettre à des passages de convection supérieur et inférieur de communiquer l'un avec l'autre ; et une partie pale est formée dans l'arbre de rotor, la rotation de l'arbre de rotor amenant la partie pale à propulser de l'air dans les passages de convection et à générer ainsi une convection d'air entre les parties supérieure et inférieure, de telle sorte que l'efficacité de refroidissement puisse être améliorée.
PCT/KR2018/014450 2017-12-27 2018-11-22 Appareil de refroidissement de moteur et automobile le comprenant WO2019132261A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020170180667A KR102575911B1 (ko) 2017-12-27 2017-12-27 모터 냉각장치 및 이를 구비한 자동차
KR10-2017-0180667 2017-12-27

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WO2019132261A1 true WO2019132261A1 (fr) 2019-07-04

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WO (1) WO2019132261A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110733334B (zh) * 2019-10-29 2022-07-12 宁波菲仕运动控制技术有限公司 一种电驱动总成的电机转子冷却系统
KR102655341B1 (ko) * 2023-10-26 2024-04-05 국립공주대학교 산학협력단 오일 직접 냉각 방식의 전기모터

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20070034375A (ko) * 2005-09-23 2007-03-28 엘지전자 주식회사 스크롤 압축기의 모터 냉각 장치
KR101312720B1 (ko) * 2013-04-15 2013-10-01 (주)모터일일사 모터 내부로 에어 유로를 형성한 모터 장치
KR20140088266A (ko) * 2012-12-28 2014-07-10 주식회사 효성 전동기의 회전자 구조
KR101761677B1 (ko) * 2016-12-29 2017-08-07 엠에이치기술개발 주식회사 모터하우징용 냉각장치
JP2017201878A (ja) * 2016-05-03 2017-11-09 アルストム トランスポート テクノロジーズ 外部冷却装置と複数の冷却回路とを備える電気モータ

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100636002B1 (ko) * 2006-03-30 2006-10-18 주식회사 한국유체기계 초고속 전동기
KR102108194B1 (ko) * 2014-01-28 2020-05-08 현대모비스 주식회사 냉각기능을 갖는 모터
KR20160023314A (ko) 2014-08-22 2016-03-03 현대모비스 주식회사 접촉식 냉각 채널 구조의 하우징을 갖는 모터 및 이의 제조 방법
KR20160116569A (ko) * 2015-03-30 2016-10-10 현대자동차주식회사 냉각구조를 갖는 전동기

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20070034375A (ko) * 2005-09-23 2007-03-28 엘지전자 주식회사 스크롤 압축기의 모터 냉각 장치
KR20140088266A (ko) * 2012-12-28 2014-07-10 주식회사 효성 전동기의 회전자 구조
KR101312720B1 (ko) * 2013-04-15 2013-10-01 (주)모터일일사 모터 내부로 에어 유로를 형성한 모터 장치
JP2017201878A (ja) * 2016-05-03 2017-11-09 アルストム トランスポート テクノロジーズ 外部冷却装置と複数の冷却回路とを備える電気モータ
KR101761677B1 (ko) * 2016-12-29 2017-08-07 엠에이치기술개발 주식회사 모터하우징용 냉각장치

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KR20190078900A (ko) 2019-07-05
KR102575911B1 (ko) 2023-09-07

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