WO2020059909A1 - Moteur électrique et module de production d'énergie intelligent le comprenant - Google Patents

Moteur électrique et module de production d'énergie intelligent le comprenant Download PDF

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Publication number
WO2020059909A1
WO2020059909A1 PCT/KR2018/011160 KR2018011160W WO2020059909A1 WO 2020059909 A1 WO2020059909 A1 WO 2020059909A1 KR 2018011160 W KR2018011160 W KR 2018011160W WO 2020059909 A1 WO2020059909 A1 WO 2020059909A1
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WO
WIPO (PCT)
Prior art keywords
oil
motor housing
oil passage
stator core
housing
Prior art date
Application number
PCT/KR2018/011160
Other languages
English (en)
Korean (ko)
Inventor
정승모
김선호
이장원
Original Assignee
엘지전자 주식회사
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Filing date
Publication date
Application filed by 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Priority to PCT/KR2018/011160 priority Critical patent/WO2020059909A1/fr
Publication of WO2020059909A1 publication Critical patent/WO2020059909A1/fr

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    • 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
    • H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
    • 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
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • 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

Definitions

  • the present invention relates to an electric motor that directly cools a motor with oil, an electric motor that combines oil and water, and an intelligent power generation module having the same.
  • IPGM Intelligent Power Generation Module
  • the electric motor includes a rotor and a stator, and a rotor may be rotatably provided inside the stator.
  • the stator has a stator coil wound on the stator core, and when current is passed through the stator coil to rotate the rotor, technologies are being developed to cool the heat generated by the stator coil and heat generated by the electric motor.
  • cooling the heat generated by the electric motor plays an important role in miniaturization and efficiency improvement of the electric motor.
  • IPGM cooling structures include Type 1 using oil for cooling the motor and cooling water for cooling the inverter, and Type 2 (cooling water for cooling the motor and inverter). type 2).
  • the direct cooling method using the oil has an advantage of high cooling efficiency and good cooling performance compared to the indirect cooling method using the cooling water. Recently, research and development of the direct cooling method have been actively conducted.
  • Patent Document 1 discloses a rotating electric device that cools an end coil by installing a guide around the end coil and flowing oil through a hole drilled in the guide.
  • the present invention was created to solve the conventional problems, and has an object to provide an electric motor capable of spreading oil evenly on a stator coil and an intelligent power generating module having the same, without having a separate guide.
  • another object of the present invention is to provide an electric motor that does not generate a dead zone when spraying oil on the stator coil and an intelligent power generation module having the same.
  • another object of the present invention is to provide an electric motor capable of improving cooling performance by spraying oil directly on a stator core, bearing, rotating shaft, rotor, etc., as well as a stator coil, and an intelligent power generation module having the same.
  • the electric motor according to the present invention includes a motor housing accommodating the stator and the rotor therein; A housing cover provided to cover the front and rear of the motor housing; An oil passage formed inside the motor housing so that oil flows; And a plurality of oil dripping nozzles which are formed to penetrate from the oil passage to the inner space of the motor housing, and spray the oil into the inner space of the motor housing.
  • the oil passage a first oil passage portion extending in the longitudinal direction from the top of the motor housing; And it may include a second oil flow path portion formed in a branch in the first oil flow path portion in a direction crossing the first oil flow path portion.
  • each of the plurality of oil dripping nozzles, the stator core, the end coil of the stator coil and the housing cover are arranged to be spaced apart in the longitudinal direction of the first oil passage part A plurality of first oil dripping nozzles; And a plurality of second oil dripping nozzles spaced apart in the longitudinal direction of the second oil passage portion to spray the oil along the circumferential direction of the stator core.
  • the upper plate is disposed on the upper portion of the motor housing, the upper plate to form the oil passage in the form of a negative; And it may further include an oil cover mounted on the upper portion of the upper plate to cover the oil passage.
  • an oil supply unit for supplying oil to the oil passage; And an oil passage connecting part connecting the oil supply part and the oil passage in communication.
  • an oil sump portion formed on an inner bottom surface of the motor housing to temporarily store oil sprayed into an inner space of the motor housing; And an oil pump connected to the oil supply unit and moving the oil from the oil sump unit to the plurality of oil dripping nozzles.
  • the bearing mounting portion formed on the inner surface of the housing cover; An oil supply hole formed through the radial direction on the upper portion of the bearing mounting portion; And a plurality of ribs extending radially on the inner surface of the housing cover to guide the oil to the oil supply hole.
  • connection ring is provided axially mounted on one side of the stator core, and supplying power to the stator coil or having a bus bar connected to the neutral wire therein;
  • An oil inlet groove formed on an upper portion of the connection ring to flow the oil into the connection ring; It may be further connected to the oil inlet groove, a plurality of oil guide grooves extending in the radial direction of the connection ring to guide the oil to the bus bar.
  • connection ring a bus bar coupling portion for coupling by inserting the bus bar;
  • a coupling protrusion inserted into a key extending in the longitudinal direction on the outer circumferential surface of the stator core, and fixing the bus bar coupling portion to one end in the axial direction of the stator core; It may include a plurality of engaging projection engaging portion extending toward the engaging projection from the bus bar engaging portion.
  • An intelligent power generation module includes a motor housing accommodating a stator and a rotor therein; A housing cover provided to cover the front and rear of the motor housing; An inverter housing accommodating the IGBT and the capacitor therein, integrally formed with the motor housing, and disposed on the motor housing; An oil passage formed inside the motor housing so that oil flows; A cooling water flow path formed inside the inverter housing so that cooling water flows; And a plurality of oil dripping nozzles which are formed to penetrate from the oil passage to the inner space of the motor housing, and spray the oil into the inner space of the motor housing.
  • the intelligent power generation module of the present invention is mounted on one side of the motor housing, an oil pump for pumping the oil stored on the bottom surface of the motor housing with the plurality of oil dripping nozzles; And a heat exchanger mounted on the other side of the motor housing to exchange the cooling water flowing from the cooling water flow path with the oil flowing from the oil flow path to cool the oil by the cooling water.
  • the oil passage a first oil passage portion extending in the longitudinal direction from the top of the motor housing; And it may include a second oil flow path portion formed in a branch in the first oil flow path portion in a direction crossing the first oil flow path portion.
  • the cooling water flow path one side is connected to the cooling water inlet formed on one side of the bottom surface of the inverter housing, the other side is a cooling water outlet formed on one side of the heat exchanger It is connected in communication with, it may be disposed on the upper portion of the oil passage.
  • a press-in surface extending along the circumferential direction so that the stator core is press-fit inside the motor housing;
  • a plurality of press-fitting surface extensions extending from the press-fitting surface in the longitudinal direction of the motor housing to expand a contact area between the stator core and the motor housing;
  • a plurality of oil penetrating portions arranged alternately in the circumferential direction with the plurality of press-fitting surface extension portions to penetrate the oil into the stator core.
  • the oil is extended to be branched along the circumferential direction from the oil passage to the press-fitting surface, so that the oil flows along the circumferential direction of the stator core to cool the stator core It may further include a euro groove.
  • the oil is directly injected into the stator coil to separate the stator coil parts
  • the oil can be distributed evenly.
  • the plurality of oil dripping nozzles are arranged spaced apart in the longitudinal and circumferential directions on the upper part of the motor housing so as to jet oil toward the stator coil, the stator core, the bearing, the rotating shaft, and the rotor, thereby varying the spray direction of the oil at various angles. It is possible to increase the cooling performance of oil by spraying with.
  • the stator hot spot high temperature portion is efficiently through the plurality of oil dripping nozzles. It can be cooled.
  • the inner surface of the housing cover (front cover or rear cover) has an oil receiving structure, that is, a plurality of ribs serving as oil guides and an oil supply hole formed in the bearing mounting portion to supply oil to the bearing to improve the cooling performance of the bearing And it is possible to improve the reliability of parts by extending the life.
  • cooling the inverter with cooling water and cooling the motor with oil in cooling the intelligent power generation module. Cooling is possible through the combined cooling and cooling, and the cooling water flows into the inside of the inverter housing to cool the IGBT and capacitors, and then heat exchange. It is possible to cool the oil to be introduced into the interior of the motor housing by flowing into the gas and exchanging heat with the oil.
  • an oil sump portion is provided on the inner bottom surface of the motor housing, and oil is temporarily stored in the oil sump portion, whereby the amount of oil required to cool the electric motor can be sufficiently secured.
  • the space provided in the motor housing in the axial direction of the motor housing can be extended or varied in the longitudinal direction (lamination direction) of the stator core, and the space provided in the inverter housing in the height direction of the inverter housing is provided with IGBT And the length of the capacitor can be varied.
  • FIG. 1 is a conceptual diagram showing an oil cooling structure of an electric motor according to a first embodiment of the present invention.
  • FIG. 2 is a cross-sectional view taken along II-II of FIG. 1.
  • FIG 3 is a plan view showing a state in which a plurality of oil dripping nozzles are formed in an oil passage according to a second embodiment of the present invention.
  • FIG. 4 is a conceptual diagram showing a movement path of oil in FIG. 1.
  • FIG. 5 is a conceptual view showing a housing cover structure having an oil receiving structure for cooling a bearing according to a third embodiment of the present invention.
  • FIG. 6 is a conceptual view showing an oil supply hole formed in the housing cover of FIG. 5.
  • FIG. 7 is a conceptual view showing a state in which the stator core is installed inside the motor housing according to the fourth embodiment of the present invention.
  • FIG. 8 is a conceptual view showing a state in which a connection ring and a bus bar are installed in the stator core of FIG. 7.
  • FIG. 9 is a conceptual diagram showing a state in which oil is injected into the oil guide groove and the coil injection part of the connection ring in FIG. 8.
  • FIG. 10 is a conceptual view showing a state viewed from the side in the radial direction of the stator core of FIG. 8.
  • FIG. 11 is a conceptual view showing a state in which the connection ring is viewed in an axial direction after the bus bar is removed in FIG. 8.
  • connection ring is coupled to the stator key groove in FIG. 11.
  • IPGM intelligent power generation module
  • FIG. 14 is an exploded view of FIG. 13.
  • FIG. 15 is a conceptual view showing a state in which a plurality of injection nozzles are formed on the cooling plate of the upper part of the motor housing in FIG. 13.
  • FIG. 16 is a cross-sectional view taken along XVI-XVI in FIG. 15.
  • FIG. 17 is a conceptual view showing the movement path of oil in FIG. 13.
  • FIG. 18 is a conceptual view showing a movement path of cooling water in FIG. 13.
  • FIG. 19 is an exploded view showing a state in which the cooling plate is disassembled in FIG.
  • FIG. 20 is a plan view showing a cooling water flow path formed on the lower cooling plate in FIG. 19.
  • 21 is a conceptual view showing a press-in surface inside a motor housing according to a sixth embodiment of the present invention.
  • FIG. 22 is a conceptual view showing a state in which an oil channel groove is formed in the press-in surface in FIG.
  • FIG. 23 is a bottom view taken along XXIII-XXIII in FIG. 21, and shows a state in which a plurality of oil jet nozzles are formed on the press-in surface.
  • 24 is a conceptual view showing a state in which an oil flow path groove is formed in an indentation surface extension part according to a seventh embodiment of the present invention.
  • FIG. 1 is a conceptual view showing an oil cooling structure of an electric motor 10 according to a first embodiment of the present invention
  • FIG. 2 is a cross-sectional view taken along II-II of FIG. 1.
  • the electric motor 10 of the present invention can be used as a driving source for driving an electric vehicle.
  • the electric motor 10 includes a stator 11, a rotor 14, and a motor housing 17.
  • the stator 11 may be composed of a stator core 12 and a stator coil 13.
  • the stator core 12 includes a plurality of teeth and slots, and a rotor receiving hole may be extended in the axial direction inside the plurality of teeth and slots.
  • the plurality of teeth protrude radially from the inner circumference of the stator core 12, and may be spaced apart in the circumferential direction. Slots may be formed between two adjacent teeth in the circumferential direction.
  • the stator coil 13 can be wound between a plurality of teeth.
  • the stator coil 13 may have end coils protruding axially from both ends of the stator core 12.
  • the rotor 14 may be rotatably installed with a gap inside the stator core 12.
  • the rotor 14 includes a rotor core 15 and a permanent magnet 16, and can be rotated relative to the stator 11 by a magnetic field formed around the stator coil 13.
  • the motor housing 17 may be configured to surround the outside of the stator core 12.
  • the motor housing 17 may be formed in a cylindrical shape.
  • An oil passage 21 may be formed inside the motor housing 17.
  • the oil passage 21 is made to flow oil.
  • the oil passage 21 may be formed inside the upper plate 27 of the motor housing 17.
  • the upper plate 27 may be integrally formed with the motor housing 17.
  • the oil inlet 28 may be formed on the top or side of the motor housing 17.
  • the oil outlet 29 may be formed on the bottom surface of the motor housing 17.
  • the oil inlet 28 shows a state formed on the upper portion of the motor housing (17).
  • Oil may be circulated through the oil passage 21.
  • the oil pump 30 is mounted on the outer side of the motor housing 17 to circulate oil.
  • the oil connection pipe may be configured to connect the oil inlet 28 and the oil outlet 29 to the outside of the motor housing 17.
  • the oil is discharged through the oil outlet 29 and sucked into the oil pump 30, and can be transferred to the oil inlet 28 by moving along the oil connection pipe by the oil pump 30.
  • Oil introduced into the oil inlet 28 is injected into the inner space of the motor housing 17 through the oil dripping nozzle formed in the oil passage 21, the stator coil 13, the stator core 12, the bearing 32 ), The rotating shaft 31 and the rotor 14 can be cooled.
  • a plurality of oil dripping nozzles are formed in the oil passage 21, and the plurality of oil dripping nozzles are for the stator coil 13 for spraying oil to the stator coil 13, and the stator core 12 ) May include a stator core 12 for spraying oil, a bearing 32 for spraying oil through a bearing 32, and the like.
  • the oil passage 21 may be composed of a first oil passage part 22 extending in the longitudinal direction of the motor housing 17 and a second oil passage part 23 extending in the circumferential direction of the motor housing 17. .
  • the second oil passage portion 23 may be branched in both circumferential directions from the first oil passage portion 22.
  • the second oil passage part 23 is not necessarily limited to the circumferential direction, and may not be formed in an arc shape along the circumferential direction, but may be formed to be inclined at a constant angle or polygonal shape.
  • the oil dripping nozzle 24 for a stator coil, the oil dripping nozzle 25 for a stator core, and the oil dripping nozzle 26 for a bearing are each a stator coil 13 installed inside the motor housing 17, and a stator. Depending on the position of the core 12 and the bearing 32 may be configured to face different directions.
  • the oil dripping nozzle 25 for the stator core may be disposed adjacent to the longitudinal center portion of the stator core 12 or spaced apart on both sides in the longitudinal direction, thereby spraying oil toward the stator core 12.
  • the oil dripping nozzle 25 for the stator core may extend radially inward and penetrate into the inner space of the motor housing 17.
  • the oil dripping nozzle 24 for the stator coil may spray oil toward the end coil protruding in the axial direction from both ends of the stator core 12.
  • the oil dripping nozzle 24 for the stator coil may extend radially inward, and may be spaced apart in the longitudinal direction of the stator core 12 than for the stator core 12.
  • the oil dripping nozzle 26 for bearings may be disposed at both ends of the first oil passage 22.
  • the bearing oil dripping nozzle 26 may be formed to be inclined at a constant angle toward the bearing 32 spaced axially from the end coil.
  • the second oil flow path part 23 may be formed in plural.
  • the plurality of second oil passage parts 23 may be arranged to be spaced apart from the front end and the rear end in the longitudinal direction of the motor housing 17.
  • the oil dripping nozzle 24 for the stator coil and the oil dripping nozzle 25 for the stator core may be respectively disposed in the plurality of second oil passages 23.
  • the plurality of oil dripping nozzles axially spaced apart from the first oil passage portion 22 spray oil into the stator core 12, the stator coil 13, and the bearing 32, respectively,
  • the stator coil 13 as well as the stator core 12 and the bearing 32 can be cooled, thereby improving the cooling performance.
  • the plurality of oil dripping nozzles 24, 25, and 26 arranged in the circumferential direction spaced apart from the second oil flow path portion 23 respectively follow the circumferential direction of the stator core 12 and the stator coil 13.
  • the oil sprayed from the oil dripping nozzle for the bearing 32 cools the bearing 32 and then moves on the rotating shaft 31 to the rotor core 15, so that the bearing 32 as well as the rotating shaft 31 and The rotor 14 can be cooled, and the cooling performance of oil can be maximized.
  • FIG. 3 is a plan view showing a state in which a plurality of oil dripping nozzles are formed in an oil passage 21 according to a second embodiment of the present invention
  • FIG. 4 is a conceptual view showing a movement path of oil in FIG. 1.
  • This embodiment differs from the first embodiment (FIG. 1) in that the oil inlet 28 is formed on the side of the motor housing 17, and the oil is formed to extend upward from the bottom of the motor housing 17. There is.
  • the oil inlet 28 is disposed on the upper part of the motor housing 17 and in the center in the longitudinal direction of the motor housing 17 and is formed through the thickness direction, but in this embodiment, the motor housing 17 It may be arranged to be spaced in one lateral direction from the upper center of the.
  • an oil passage connecting portion 129 for connecting the oil inlet 128 and the first oil passage portion 22 may be formed.
  • the oil passage connecting portion 129 may extend in parallel with the second oil passage portion 23.
  • One side of the oil passage connecting portion 129 may be connected to the central portion in the longitudinal direction of the first oil passage portion 22, and the other side of the oil passage connecting portion 129 may be connected to communicate with the oil inlet 28.
  • the oil passage connecting portion 129 is a flow path for supplying oil, an oil dripping nozzle is not required. This is because when the oil dripping nozzle is formed in the oil passage connecting portion 129, the oil is drained through the oil dripping nozzle before the oil is supplied to the oil passage 21, thereby reducing the oil supply amount.
  • FIG. 5 is a conceptual view showing a structure of a housing cover 218 having an oil receiving structure for cooling a bearing 32 according to a third embodiment of the present invention
  • FIG. 6 is oil formed in the housing cover 218 of FIG. 5
  • It is a conceptual diagram showing the supply hole 235.
  • the main housing 200 of this embodiment may be configured by integrally molding the motor housing 217 and the inverter housing 233.
  • the main housing 200 may be applied to an intelligent power generation module (IPGM) having a motor and an inverter.
  • IPGM intelligent power generation module
  • the main housing 200 may be composed of a motor housing 217 in which the stator 11 and the rotor 14 are accommodated, and an inverter housing 233 in which IGBTs and capacitors are accommodated.
  • the inverter housing 233 may be disposed on the motor housing 217.
  • the inverter housing 233 is blocked in the front, rear, left, and right directions, and is opened upward.
  • the lower portion of the inverter housing 233 is blocked by an internal partition wall.
  • the inverter cover 434 is mounted on the upper portion of the inverter housing 233, and may be configured to cover the opening of the inverter housing 233.
  • the motor housing 217 may be opened in the front-rear direction.
  • the front cover 219 of the housing cover 218 may be mounted to cover the front of the motor housing 217.
  • the rear cover 220 may be mounted to cover the rear of the motor housing 217.
  • the housing cover 218 may be divided into a front cover 219 and a rear cover 220 depending on whether the rotating shaft 31 penetrates.
  • the front cover 219 may not pass through the rotating shaft 31 and the rear cover 220 may pass through the rotating shaft 31.
  • a bearing mounting portion 234 may be formed on the inner surface of the rear cover 220.
  • the bearing mounting portion 234 may be configured in a cylindrical shape to receive and wrap the bearing 32.
  • the upper center portion of the bearing mounting portion 234 may be formed with an oil supply hole 235 so that oil can be supplied.
  • a plurality of ribs 236 may be formed on the inner surface of the rear cover 220. Each of the plurality of ribs 236 may extend radially. Each of the plurality of ribs 236 may have an inner end connected to the bearing mounting portion 234, and an outer end extending radially smaller than a diameter of the inner space portion of the motor housing 217.
  • Each of the plurality of ribs 236 may be formed to have a smaller axial height from the inner end to the outer end.
  • An oil supply hole 235 is disposed between two ribs 236 that are adjacent in the circumferential direction among the plurality of ribs 236, and the oil is guided by the two ribs 236 and bearing through the oil supply hole 235 ( 32).
  • the two ribs 236 communicating with the oil supply hole 235 may be located in the upper central portion of the bearing mounting portion 234.
  • the oil is concentrated in a larger amount to the oil supply hole 235 along a plurality of ribs 236 serving as an oil guide to cool more heat from the bearing 32.
  • FIG. 7 is a conceptual view showing a state in which the stator core 12 is installed inside the motor housing 317 according to the fourth embodiment of the present invention
  • FIG. 8 is a connection ring 339 to the stator core 12 of FIG. 7
  • FIG. 9 is a conceptual view showing a state in which a bus bar is installed
  • FIG. 9 is a conceptual view showing a state in which oil is injected into the oil guide groove 344 and the coil injection part of the connection ring 339 in FIG. 8,
  • FIG. 11 is a conceptual view showing the state of the connection ring 339 viewed in the axial direction after removing the bus bar in FIG. 8, and FIG. 12 is in FIG. 11.
  • It is a conceptual diagram showing a structure in which the connection ring 339 is coupled to the stator keyway 349.
  • the main housing 300 of this embodiment may be configured by applying the oil receiving structure of the third embodiment to the housing cover 318.
  • the stator core 12 may be forced into the motor housing 317 by heat.
  • the stator core 12 may be formed of iron (Fe) or steel, and the motor housing 317 may be formed of aluminum (Al) or aluminum alloy.
  • the stator coil 13 may be composed of a three-phase coil.
  • a bus bar for supplying power to each phase coil of the stator coil 13 may be connected.
  • the power supply bus bar 337 is configured for each phase, and a terminal unit for connecting an external power line may be formed at each end of the plurality of power supply bus bars 337.
  • a through hole may be formed to allow a bolt or the like to pass through the terminal portion.
  • the bus bar may be formed in a polygonal shape and inclined along the circumferential direction.
  • the bus bars can be arranged spaced apart in the circumferential direction.
  • a busbar 338 for a neutral wire connecting the ends of each phase coil may be connected to the stator coil 13.
  • the plurality of power supply bus bars 337 and the neutral conductor bus bars 338 may be arranged to be spaced apart from one end in the longitudinal direction of the stator core 12.
  • the power supply bus bar 337 may be disposed inside the radial direction of the bus bar 338 for the neutral wire.
  • the length of the bus bar 338 for the neutral wire may be longer in the circumferential direction than the bus bar 337 for power supply.
  • the plurality of power supply bus bars 337 and the neutral conductor bus bars 338 may be mounted on the connection ring 339.
  • the connection ring 339 may be formed in a circular shape.
  • the connection ring 339 may be formed in a C-shape opened in one direction.
  • connection ring 339 includes a plurality of first bus bar coupling portions 340 and a plurality of second bus bar coupling portions 342 extending in a circumferential direction.
  • Each of the plurality of first bus bar coupling portions 340 may be spaced apart in the circumferential direction.
  • Each of the plurality of second bus bar coupling portions 342 may be spaced apart in the circumferential direction.
  • the first bus bar coupling part 340 is configured to connect the bus bar 338 for the neutral wire, and the second bus bar coupling part 342 is configured to connect the bus bar 337 for power supply.
  • the first bus bar coupling portion 340 may be formed to extend radially outward from one side of the first bus bar coupling portion 340.
  • the plurality of first bus bar coupling parts 340 and the plurality of second bus bar coupling parts 342 may be disposed on concentric circles with each other and may have different phase differences.
  • Each of the plurality of first bus bar coupling parts 340 and the plurality of second bus bar coupling parts 342 may include bus bar coupling grooves 341 and 343 and an oil guide groove 344.
  • the first bus bar coupling groove 341 may be extended in a circumferential direction to correspond to the shape of the bus bar 338 for a neutral wire.
  • the second bus bar coupling groove 343 is formed to correspond to the shape of the bus bar in a “V” shape or a polygonal shape, so that the bus bars 319 and 320 can be fitted into the bus bar coupling grooves 341 and 343.
  • One first bus bar coupling portion 340 may be integrally formed with one second bus bar coupling portion 342 adjacent in the radial direction.
  • the oil guide groove 344 may extend in the radial direction between the first bus bar coupling portion 340 and the second bus bar coupling portion 342 integrally connected.
  • the outer side of the oil guide groove 344 is connected to the bus bar coupling grooves 341 and 343 of the first bus bar coupling portion 340, and the inner side of the oil guide groove 344 is the second bus bar coupling portion 342. It can be connected in communication with the bus bar coupling groove (341,343).
  • the plurality of oil guide grooves 344 may be formed between the first bus bar coupling portion 340 and the second bus bar coupling portion 342 connected in the radial direction.
  • the plurality of oil guide grooves 344 may be provided one for each three phases.
  • two oil guide grooves 344 are formed at a portion connecting one first bus bar coupling portion 340 and a second bus bar coupling portion 342, and the other first bus bar coupling portion ( 340) and a second oil guide groove 344 may be formed at a portion connecting the second bus bar coupling portion 342.
  • An oil inlet groove 345 for supplying oil to the inside of the connection ring 339 may be formed.
  • the oil inlet groove 345 may be formed at the top end of the connection ring 339.
  • the oil inlet groove 345 may be formed to be inclined downward in the axial direction toward the bus bar coupling grooves 341 and 343.
  • the oil inlet groove 345 may be formed to communicate with the first bus bar coupling groove 341 of the first bus bar coupling portion 340.
  • the first bus bar engaging portion 340 and the bus bar for neutral wire 338 A gap may be formed in between.
  • the oil may flow into the oil inlet groove 345 and flow into the first bus bar coupling groove 341 through the gap.
  • An oil guide connecting groove 346 may be formed inside the first bus bar coupling groove 341.
  • the oil guide connecting groove 346 extends along the circumferential direction to connect a plurality of oil guide grooves 344 spaced apart in the circumferential direction.
  • the oil introduced into the first bus bar coupling groove 341 may be supplied to each of the plurality of oil guide grooves 344 by moving in the circumferential direction along the oil guide connecting groove 346.
  • the oil supplied along each of the plurality of oil guide grooves 344 is configured to move to the second bus bar coupling groove 343 of the second bus bar coupling portion 342.
  • the second bus bar coupling groove 343 may be formed to be inclined downward from the inner end of the oil guide groove 344 so that the oil can be easily moved from the oil guide groove 344 to each of the second bus bar coupling grooves 343. have.
  • the oil can not only cool the busbar 338 for the neutral wire and the power supply busbar 337 mounted on the connection ring 339, but also the stator coil 13 connected to each busbar. have.
  • An oil passage hole 347 may be formed at the top end of the connection ring 339.
  • the oil passage hole 347 may be spaced apart from the rear of the oil inlet groove 345.
  • the oil passage hole 347 may be disposed on the same line in the axial direction with the oil inlet groove 345.
  • the oil dripping nozzle formed inside the motor housing 317 may spray oil to the connection ring 339 in the direction of gravity.
  • the position of the connection ring 339 located at the shortest distance from the motor housing 317 is the uppermost part, and the angle at which the oil falls and the connection ring 339 cross vertically, flowing into the oil inlet groove 345 It is possible to secure as much oil as possible.
  • connection ring 339 is disposed between the oil dripping nozzle and the end coil of the motor housing 317, oil sprayed from the oil dripping nozzle may be blocked by the connection ring 339.
  • first busbar coupling portion 340 and the second busbar coupling portion 342 of the connection ring 339 are preferably spaced apart in the longitudinal direction from the end of the stator core 12. Do.
  • the connection ring 339 may include a plurality of coupling protrusions 350 to couple the first and second busbar coupling portions 322 and 324 and the stator core 12.
  • the plurality of coupling protrusions 350 may be respectively inserted and coupled to the plurality of key grooves 349 formed on the outer circumferential surface of the stator core 12.
  • the plurality of key grooves 349 may be spaced apart in the circumferential direction of the stator core 12.
  • Each of the plurality of key grooves 349 may extend in the longitudinal direction of the stator core 12.
  • the plurality of engaging projections 350 may be spaced apart in the circumferential direction of the stator core 12.
  • the plurality of coupling protrusions 350 may be connected to the first bus bar coupling part 340 by coupling parts of the coupling protrusion 350.
  • the engaging projection engaging portion 351 includes a first engaging projection engaging portion 352 extending in the axial direction and a second engaging projection engaging portion 353 extending in the radial direction.
  • the first coupling protrusion coupling portion 352 may be spaced radially inward from the outermost end of the stator, and the first coupling protrusion coupling portion 352 may be formed to extend in the axial direction.
  • the front end portion of the first coupling protrusion coupling portion 352 is connected to the first bus bar coupling portion 340, and the rear end portion of the first coupling protrusion coupling portion 352 may be extended to contact the stator core 12.
  • the second coupling protrusion coupling portion 353 extends radially outward at the rear end of the first coupling protrusion coupling portion 352 to connect the first coupling protrusion coupling portion 352 and the coupling protrusion 350.
  • the first and second coupling protrusion coupling parts 352 and 353 may be formed to have a wider width than the coupling protrusion 350.
  • the engaging projection 350 may be coupled to the key groove 349 by interference fit.
  • connection ring 339 can be easily assembled to the stator core 12 by fitting the engaging projection 350 in the axial direction to the key groove 349.
  • a plurality of support parts 348 may extend in the axial direction toward the stator core 12 from the longitudinal rear end of the first bus bar coupling part 340.
  • An oil passage hole 347 may be formed between the plurality of support parts 348.
  • the front end of the plurality of support parts 348 is integrally connected to the first bus bar coupling part 340, and the rear ends of the plurality of support parts 348 are contacted and supported by the stator core 12 so that the connection ring 339 is motor It is possible to prevent the housing 317 from moving in the longitudinal direction.
  • FIG. 13 is a perspective view showing the appearance of an intelligent power generation module 400 (IPGM) according to a fifth embodiment of the present invention
  • FIG. 14 is an exploded view of FIG. 13
  • FIG. 15 is a motor housing 417 in FIG.
  • FIG. 16 is a cross-sectional view taken along XVI-XVI in FIG. 15,
  • FIG. 17 is a conceptual view showing an oil movement path in FIG. 18 is a conceptual view showing a movement path of the cooling water in FIG. 13
  • FIG. 19 is an exploded view showing a disassembled cooling plate in FIG. 18, and
  • FIG. 20 is a plan view showing a cooling water flow path formed in the lower cooling plate in FIG. to be.
  • an oil passage and an oil dripping nozzle according to the first or second embodiment can be applied.
  • This embodiment can apply the oil receiving structure for supplying oil to the bearing according to the third embodiment.
  • the oil guide groove structure of the connection ring according to the embodiment of FIG. 4 may be applied.
  • the main housing 401 of this embodiment can be applied to the intelligent power generation module 400.
  • the main housing 401 is an integrated housing in which the inverter housing 433 and the motor housing 417 are integrally formed.
  • the inverter housing 433 may be disposed above the main housing 401 and the motor housing 417 may be disposed below the main housing 401.
  • the inverter housing 433 may be formed in a square shape.
  • the inverter is configured to drive an electric motor, and for this purpose, the inverter housing 433 can accommodate an IGBT and a capacitor. IGBTs and capacitors can be cooled by cooling water.
  • Cooling water may be configured to flow inside the cooling plate 438.
  • a cooling water channel 445 may be formed inside the cooling plate 438.
  • the cooling plate 438 may be installed inside the inverter housing 433 so as to contact the IGBT and the capacitor.
  • the cooling plate 438 may be installed on the bottom surface of the inverter housing 433.
  • the cooling water flow path 445 may be configured to indirectly cool the IGBT and the capacitor.
  • the cooling plate 438 may be disposed on the bottom surface of the IGBT and capacitor.
  • the cooling plate 438 may be disposed on the oil cover 448.
  • the cooling plate 438 may include a lower cooling plate 4380 and an upper cooling plate 4380.
  • the upper cooling plate (4382) and the lower cooling plate (4381) are stacked in the vertical direction and can be fastened to each other.
  • a cooling water flow path 445 may be formed on the upper surface of the lower cooling plate 4380.
  • the cooling water flow path 445 may be formed in an intaglio shape or concave on the upper surface of the lower cooling plate 4380.
  • the cooling water flow path 445 may be arranged to exchange heat with the bottom surface of the IGBT and the capacitor.
  • the cooling water flow path 445 may include a plurality of first cooling water flow paths 4451 extending in the transverse direction of the inverter housing 433 and a plurality of second cooling water flow paths 4452 extending in the longitudinal direction of the inverter housing 433. You can.
  • the lateral direction may be referred to as a direction perpendicular to the axial direction of the rotating shaft 31.
  • the longitudinal direction may be referred to as a direction parallel to or the same as the axial direction of the rotating shaft 31.
  • the plurality of first cooling water channels 4451 may be spaced apart in the longitudinal direction.
  • the plurality of second cooling water channels 4452 may be arranged to be spaced apart in the horizontal direction, and may be configured to connect the plurality of first cooling water channels 4451 in communication.
  • One of the plurality of second cooling water channels 4452 may be connected to the cooling water inlet, and one of the plurality of first cooling water channels 4451 may be connected to the cooling water outlet.
  • the inlet-side second cooling water channel 4452 and the outlet-side first cooling water channel 4451 may be arranged to be spaced apart from each other in a diagonal direction.
  • the cooling water flow path 445 may be formed in a zigzag form in the left and right directions so as to be sufficiently cooled through heat exchange with the IGBT and the capacitor, that is, to sufficiently secure the heat exchange area (see FIGS. 18 and 20).
  • the motor housing 417 may be formed in a cylindrical shape.
  • the motor housing 417 may accommodate the stator 11 and the rotor 14 therein.
  • An oil sump portion 441 is provided on the bottom surface of the motor housing 417 to sufficiently secure the amount of oil for cooling the oil.
  • the oil sump portion 441 may be formed to communicate with the inner space of the motor housing 417 on the bottom surface of the motor housing 417.
  • a first front cover 4191 and a second front cover 4192 may be installed in front of the motor housing 417.
  • the first front cover 4191 may be configured to cover a portion open in front of the motor housing 417, and the second front cover 4192 may cover a portion formed through the first front cover 4191.
  • the rotating shaft 31 of the rotor 14 penetrates the first front cover 4191, but does not penetrate the second front cover 4192.
  • the second front cover 4192 may be configured to cover the rotating shaft 31.
  • Both ends of the rotating shaft 31 may be rotatably supported by a plurality of bearings 32.
  • One bearing 32 of the plurality of bearings 32 is installed inside the bearing mounting portion 34 formed on the inner surface of the first front cover 4191, so that one end of the rotating shaft 31 can be rotatably supported. have.
  • the gearbox 435 may be disposed behind the motor housing 417.
  • the gearbox housing 436 may be configured to receive gears therein.
  • a rear cover 420 may be installed between the gearbox housing 436 and the motor housing 417. The rear cover 420 may be disposed behind the motor housing 417 toward the opposite side of the first and second front covers 4191 and 4192.
  • the rear cover 420 may be disposed to cover an open portion behind the motor housing 417.
  • the rotating shaft 31 may be configured to penetrate the center of the rear cover 420.
  • a bearing mounting portion 34 may be formed on the inner surface of the rear cover 420.
  • Another bearing 32 for rotatably supporting the rotating shaft 31 may be installed inside the bearing mounting portion 34 of the rear cover 420.
  • the rear end of the rotating shaft 31 penetrating the rear cover 420 may be connected to gears of the gearbox 435 to transmit power.
  • the gears of the gearbox 435 are driven by receiving power from the rotating shaft 31 and can increase or decrease the torque of the vehicle by changing the number of revolutions of the electric motor.
  • the oil passage 421 may be formed on the motor housing 417.
  • the upper plate 437 may be integrally formed with the motor housing 417, and the oil passage 421 may be formed with an engraved shape on the upper plate 437.
  • the oil passage 421 may be opened upward and closed downward.
  • the oil passage 421 may be formed in a fine shape downward.
  • An oil cover 448 may be mounted on the upper portion of the upper plate 437 to cover the oil passage 421.
  • a cooling plate 438 may be disposed on the oil cover 448. The oil cover 448 and the cooling plate 438 may be combined with each other.
  • the oil passage 421 may include a first oil passage part 422 and a second oil passage part 423.
  • the first oil passage part 422 may extend in the longitudinal direction of the motor housing 417.
  • the second oil flow path part 423 may extend in the circumferential direction or both side directions of the motor housing 417 in the first oil flow path part 422 so as to intersect with the first oil flow path part 422.
  • the first oil passage part 422 may extend horizontally.
  • the second oil passage part 423 may include a horizontal extension part 4231 that extends horizontally, and a slope part 4232 that is formed to be inclined downward in the lateral direction from the horizontal extension part 4231.
  • a plurality of oil dripping nozzles may be formed in each of the first oil flow path part 422 and the second oil flow path part 423. Each of the plurality of oil dripping nozzles is formed to penetrate the upper plate 437, and oil supplied to the oil passage 421 may be injected into the inner space of the motor housing 417.
  • the oil passage 421 of this embodiment may be configured to be the same or similar to the oil passage of the second embodiment.
  • the oil passage connecting portion 429 may be formed in various shapes and positions according to the position of the oil pump 440. In this embodiment, the oil passage connecting portion 429 may extend from the middle right side of the first oil passage portion 422 toward the rear side of the motor housing 417.
  • Oil pump 440 may be installed on the right side of the motor housing (417).
  • the oil pump 440 may be disposed obliquely on the lower side of the motor housing 417.
  • the oil pump 440 may be inclined on the right side of the oil sump portion 441.
  • the oil pump 440 moves the oil from the inner space of the motor housing 417 to the oil passage 421 via the oil sump portion 441 or from the oil passage 421 to the inner space of the motor housing 417 again. It can be configured to circulate.
  • the heat exchanger 443 may be configured to exchange heat between oil and cooling water.
  • the heat exchanger 443 may be mounted on one side of the motor housing 417.
  • the heat exchanger 443 may be formed in a box shape.
  • a “c” shaped heat exchanger bracket 444 may be combined to surround the three sides of the heat exchanger 443.
  • a plurality of fastening portions may be respectively formed on both sides of the heat exchanger bracket 444.
  • a fastening hole for fastening a bolt or the like may be formed in each of the fastening parts.
  • a plurality of fastening guide grooves are formed in a semi-circular shape on both sides of the heat exchanger bracket 444, so that the bolt can be easily inserted toward the fastening hole.
  • the heat exchanger 443 may be connected to the oil sump portion 441.
  • One side of the oil inlet pipe is connected to the oil sump portion 441, and the other side is connected to the heat exchanger 443, so that the oil can move from the oil sump portion 441 to the heat exchanger 443 through the oil inlet pipe. .
  • the heat exchanger 443 may be connected to the oil pump 440.
  • the oil connection pipe is connected to one side in communication with the heat exchanger 443, and the other side is connected to the oil pump 440, so that the oil moves from the heat exchanger 443 to the oil pump 440 through the oil connection pipe. You can.
  • the heat exchanger 443 can cool the oil by exchanging heat with the cooling water for oil to be supplied to the oil pump 440.
  • a cooling water inlet 446 may be connected to the cooling water flow path 445 on one bottom surface of the inverter housing 433, and a cooling water outlet 447 may be formed on one side of the heat exchanger 443.
  • the cooling water flows along the cooling water flow path 445 to cool the inverter, and then flows into the heat exchanger 443 to heat the oil inside the heat exchanger 443 to cool the oil.
  • the cooling water inlet 446 and the cooling water outlet 447 are connected to the radiator, and the cooling water flowing out through the cooling water outlet 447 discharges heat from the radiator to the outside and then again through the cooling water inlet 446 to the inverter housing 433 It may be introduced into the cooling water flow path (445).
  • the oil pump 440 may supply the oil sucked from the oil sump portion 441 via the heat exchanger 443 to the oil flow path 421 through the oil flow path connection portion 429.
  • the oil pump 440 may be connected to the oil flow path connection part 429 through the oil supply part 442.
  • the lower side of the oil supply unit 442 may be connected to the oil pump 440 in communication, and the upper side of the oil supply unit 442 may be connected to the oil flow path connection unit 429.
  • Oil is injected into the inner space of the motor housing 417 through a plurality of oil dripping nozzles, stator core 12, stator coil 13, bearing 32, rotating shaft 31 and rotor 14, etc. It can be cooled directly.
  • the oil cooling the stator core 12 and the like may be temporarily stored by moving to the oil sump portion 441.
  • the oil is sucked into the oil pump 440 by receiving circulating power from the oil pump 440, and after rising from the oil pump 440 to the oil passage connecting portion 429 through the oil supply unit 442, the oil passage connecting portion ( 429) to the oil passage 421.
  • the oil is distributed through a plurality of oil dripping nozzles in the oil passage 421, and is sprayed to the stator core 12, the stator coil 13, the bearing 32, and the rotating shaft 31 to cool the electric motor. .
  • FIG. 21 is a conceptual view showing an indentation surface 5170 inside the motor housing 517 according to the sixth embodiment of the present invention
  • FIG. 22 is an oil passage groove 5171 formed on the indentation surface 5170 in FIG. Is a conceptual view showing
  • FIG. 23 is a bottom view taken along XXIII-XXIII in FIG. 21 and shows a state in which a plurality of oil jet nozzles are formed on the press-in surface.
  • This embodiment can be combined with at least one of the preceding first to fifth embodiments.
  • a press-in surface 5170 may be formed along the inner circumferential direction of the motor housing 517.
  • the press-in surface 5170 means a surface in which the stator core 12 is forcibly pressed by heat. Since the motor housing 517 and the stator core 12 have different coefficients of thermal expansion, the stator core 12 may be pressed into the motor housing 517.
  • the motor housing 517 may be made of aluminum, and the stator core 12 may be made of iron or steel.
  • Aluminum has a higher coefficient of thermal expansion than iron. That is, if the aluminum has a greater thermal expansion rate due to temperature change than iron under a certain pressure, and the stator core 12 is inserted inside the motor housing 517 at a high temperature and then cooled to a predetermined temperature or less, the motor housing 517
  • the silver stator core 12 can be fixed by pressing in the radial direction.
  • the force that the motor housing 517 presses the stator core 12 in the radial direction may be referred to as a pressing force.
  • the contact area between the motor housing 517 and the stator core 12 affects the pressing force of the motor housing 517, in order to maintain the required pressing force or higher, the motor housing 517 and the stator core 12
  • the contact area must be more than a certain size.
  • stator core 12 in order to release more heat generated in the stator core 12, it is preferable to increase the amount of oil contacting the stator core 12.
  • the oil penetration portion 5174 may be formed around the indentation surface 5170 so as to minimize the indentation surface 5170 of the motor housing 517 and allow oil to penetrate into the outer circumferential surface of the stator core 12.
  • a plurality of oil penetrating portions 5174 may be arranged spaced along the circumferential direction around the press-fitting surface 5170.
  • a press-fit surface 5170 may be formed to extend along the circumferential direction on the inner circumferential surface of the motor housing 517.
  • a plurality of indentation surface extension portions 5172 at the indentation surface 5170 may extend in the longitudinal direction of the motor housing 517.
  • the plurality of press-fit surface extension portions 5172 may be spaced apart in the circumferential direction.
  • the plurality of press-fitting surface extension portions 5172 may be spaced apart on the same straight line in both front and rear directions of the press-fitting surface 5170.
  • the oil penetrating portion 5174 and the press-fitting surface extension portion 5172 may be alternately arranged along the circumferential direction.
  • Each of the oil penetrating portion 5174 and the press-fit surface extension portion 5172 is formed of four, but is not limited to this number.
  • the press-in surface extension portion 5172 may increase the press-in of the motor housing 517 by securing a wide contact area between the motor housing 517 and the stator core 12.
  • the oil penetrating portion 5174 increases the heat dissipation of the stator core 12 by increasing the contact area between the oil and the stator core 12, and further improves the cooling performance.
  • An axial movement preventing jaw 5173 is formed at the end of the press-fit surface extension portion 5172, to prevent the stator core 12 from moving in the axial direction when inserted into the inner space of the motor housing 517.
  • the plurality of axial movement preventing jaws 5173 may be spaced apart in the circumferential direction.
  • Each of the plurality of axial movement preventing jaws 5173 may extend along the circumferential direction.
  • the oil passage groove 5171 may be extended along the circumferential direction at the center of the press-fitting surface 5170 in the longitudinal direction.
  • the oil passage groove 5171 may be connected to a plurality of oil dripping nozzles in communication.
  • the upper portion of the oil passage groove 5171 may be disposed to overlap with the oil passage 431 disposed in the upper portion of the motor housing 517 in the thickness direction.
  • the upper portion of the oil passage groove 5151 may be disposed to overlap with at least one oil dripping nozzle 525.
  • the plurality of oil dripping nozzles 525 and 526 are spaced apart from each other to cross the indentation surface 5172 and the oil penetrating portion 5174 in the axial direction to spray oil into the stator core.
  • a plurality of oil dripping nozzles 524 spaced apart in the circumferential direction are disposed adjacent to the oil penetrating portion 5174 or the press-fit surface extension portion 5172, and the oil is used as a stator coil. Can be sprayed.
  • the upper part of the oil passage groove 5171 may be connected to the first oil passage part or the second oil passage part through a plurality of oil dripping nozzles 524,525,526.
  • the oil moves along the oil passage groove 5171 in the first oil passage portion, and is in contact with the longitudinal center portion of the stator core 12 to effectively cool the region having the highest temperature in the stator core 12 can do.
  • 24 is a conceptual view showing a state in which an oil channel groove 5175 is formed in the press-fit surface extension portion 5172 according to the seventh embodiment of the present invention.
  • the oil passage groove 5175 may be formed on at least one of the indentation surface 5170 and the indentation surface extension part 5172.
  • the oil passage groove 5175 shows the shape formed in the press-fit surface extension portion 5172.
  • the oil passage groove 5175 may extend along the circumferential direction to cross the press-fit surface extension portion 5172 in the circumferential direction.
  • Both ends of the oil passage groove 5175 may be in communication with the oil penetrating portion 5174.
  • the oil penetrates into the indentation surface extension portion 5172 through the oil penetrating portion 5174, thereby increasing the cooling performance by expanding the contact area between the stator core and the oil.
  • the present invention by dividing a channel in the interior of the motor housing (engraved) to form an oil passage, and by forming a plurality of oil dripping nozzles spaced apart in the circumferential direction, the oil is directly injected into the stator coil. By doing so, it is possible to uniformly distribute the oil for each stator coil.
  • the plurality of oil dripping nozzles are arranged spaced apart in the longitudinal and circumferential directions on the upper part of the motor housing so as to spray oil toward the stator coil, stator core, bearing, rotating shaft, and rotor, thereby varying the spray direction of oil. It is possible to increase the cooling performance of oil by spraying at an angle.
  • the stator hot spot high-temperature portion is efficiently provided through the plurality of oil dripping nozzles. It can be cooled.
  • the inner surface of the housing cover (front cover or rear cover) has an oil receiving structure, that is, a plurality of ribs serving as oil guides and an oil supply hole formed in the bearing mounting portion to supply oil to the bearing to improve the cooling performance of the bearing And it is possible to improve the reliability of parts by extending the life.
  • connection ring on which the bus bar for supplying power to the stator coil or connecting the neutral wire is mounted, the oil is guided to the bus bar or stator coil through the oil guide groove, thereby cooling the stator coil. Performance can be improved.
  • cooling the intelligent power generation module it is possible to cool the inverter with cooling water and cooling with an oil-water cooling system that cools the motor together with oil.
  • the cooling water flows into the inside of the inverter housing to cool the IGBT and capacitors, and then heat exchange It is possible to cool the oil to be introduced into the interior of the motor housing by flowing into the gas and exchanging heat with the oil.
  • an oil sump portion is provided on the inner bottom surface of the motor housing to temporarily store oil in the oil sump portion, thereby sufficiently securing the amount of oil required to cool the electric motor.

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

Abstract

La présente invention concerne un moteur électrique directement refroidi avec de l'huile, et un module de production d'énergie intelligent le comprenant, le moteur électrique comprenant : un carter de moteur pour recevoir un stator et un rotor en son sein ; un couvercle de boîtier pour recouvrir le côté avant et le côté arrière du carter de moteur ; un trajet d'écoulement d'huile formé à l'intérieur du carter de moteur de telle sorte que l'huile s'écoule en son sein ; et une pluralité de buses d'égouttement d'huile formées pour pénétrer à partir du trajet d'écoulement d'huile dans l'espace intérieur du carter de moteur, pulvérisant ainsi l'huile dans l'espace intérieur du carter de moteur.
PCT/KR2018/011160 2018-09-20 2018-09-20 Moteur électrique et module de production d'énergie intelligent le comprenant WO2020059909A1 (fr)

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Application Number Priority Date Filing Date Title
PCT/KR2018/011160 WO2020059909A1 (fr) 2018-09-20 2018-09-20 Moteur électrique et module de production d'énergie intelligent le comprenant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/KR2018/011160 WO2020059909A1 (fr) 2018-09-20 2018-09-20 Moteur électrique et module de production d'énergie intelligent le comprenant

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023186210A1 (fr) * 2022-03-29 2023-10-05 Schaeffler Technologies AG & Co. KG Stator
DE102022128307A1 (de) 2022-10-26 2024-05-02 Schaeffler Technologies AG & Co. KG Stator

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004180376A (ja) * 2002-11-25 2004-06-24 Nippon Soken Inc 回転電機
JP2008253041A (ja) * 2007-03-30 2008-10-16 Toyota Motor Corp モータ駆動装置
JP2009089456A (ja) * 2007-09-27 2009-04-23 Toyota Motor Corp 固定子構造
JP2012191719A (ja) * 2011-03-09 2012-10-04 Hitachi Constr Mach Co Ltd 永久磁石式発電電動機および油圧ショベル用永久磁石式発電電動機
US20150101838A1 (en) * 2013-10-10 2015-04-16 Hamilton Sundstrand Corporation Housings with embedded bus bars and standoffs

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004180376A (ja) * 2002-11-25 2004-06-24 Nippon Soken Inc 回転電機
JP2008253041A (ja) * 2007-03-30 2008-10-16 Toyota Motor Corp モータ駆動装置
JP2009089456A (ja) * 2007-09-27 2009-04-23 Toyota Motor Corp 固定子構造
JP2012191719A (ja) * 2011-03-09 2012-10-04 Hitachi Constr Mach Co Ltd 永久磁石式発電電動機および油圧ショベル用永久磁石式発電電動機
US20150101838A1 (en) * 2013-10-10 2015-04-16 Hamilton Sundstrand Corporation Housings with embedded bus bars and standoffs

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023186210A1 (fr) * 2022-03-29 2023-10-05 Schaeffler Technologies AG & Co. KG Stator
DE102022128307A1 (de) 2022-10-26 2024-05-02 Schaeffler Technologies AG & Co. KG Stator

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