WO2022134746A1 - 油冷电机冷却系统及车辆 - Google Patents

油冷电机冷却系统及车辆 Download PDF

Info

Publication number
WO2022134746A1
WO2022134746A1 PCT/CN2021/123354 CN2021123354W WO2022134746A1 WO 2022134746 A1 WO2022134746 A1 WO 2022134746A1 CN 2021123354 W CN2021123354 W CN 2021123354W WO 2022134746 A1 WO2022134746 A1 WO 2022134746A1
Authority
WO
WIPO (PCT)
Prior art keywords
oil
oil collecting
holes
pan
pipe
Prior art date
Application number
PCT/CN2021/123354
Other languages
English (en)
French (fr)
Inventor
顾存行
耿丽珍
周之光
李亚南
Original Assignee
奇瑞汽车股份有限公司
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 奇瑞汽车股份有限公司 filed Critical 奇瑞汽车股份有限公司
Priority to EP21908747.5A priority Critical patent/EP4270733A4/en
Priority to US18/257,434 priority patent/US20240258881A1/en
Publication of WO2022134746A1 publication Critical patent/WO2022134746A1/zh

Links

Images

Classifications

    • 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
    • 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
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/20—Stationary 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
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/24—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors
    • 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
    • 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
    • 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
    • H02K7/08—Structural association with bearings
    • H02K7/083—Structural association with bearings radially supporting the rotary shaft at both ends of the rotor
    • 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

Definitions

  • the present application relates to the technical field of vehicles, and in particular, to an oil-cooled motor cooling system and a vehicle.
  • embodiments of the present application provide an oil-cooled motor cooling system and a vehicle, which can improve the cooling effect of the motor.
  • the specific scheme of the embodiment of the present application is as follows:
  • an embodiment of the present application provides an oil-cooled motor cooling system, wherein the system includes an oil collection assembly, an oil injection pipe, an oil guide pipe, and a motor;
  • the motor includes a rotor shaft, first and second bearings supporting the rotor shaft, a stator winding, a stator core and a rotor core;
  • the oil guide pipe is aligned with the rotor shaft in the axial direction of the rotor shaft, and is used for injecting cooling oil into the inside of the rotor shaft;
  • the two ends of the shaft body of the rotor shaft are respectively provided with a first oil slinging hole and a second oil slinging hole, the first oil slinging hole corresponds to the first bearing, and the second oil slinging hole corresponds to the motor. the second bearing;
  • the fuel injection pipe is located above the center of the oil collecting assembly, and is provided with a plurality of fuel injection holes whose openings face the oil collecting assembly, the fuel injection pipe is used for receiving the cooling oil provided by the oil pump and sending the cooling oil Oil collecting component injection;
  • the oil collecting assembly includes a first oil collecting pan and a second oil collecting pan; the first oil collecting pan and the second oil collecting pan are respectively arranged above both ends of the stator winding, and the first oil collecting pan
  • the disc and the second oil collecting disc are arc shapes adapted to the shape of the stator winding, and each is provided with a plurality of through holes for allowing the cooling oil sprayed from the fuel injection pipe to flow to the on the stator winding;
  • the oil collection assembly, the fuel injection pipe and the oil guide pipe are all adapted to be connected to a transmission case.
  • both the first oil throwing hole and the second oil throwing hole are inclined holes whose outer end is closer to the end of the rotor shaft than the inner end.
  • the fuel injection pipe includes a straight pipe and a bent pipe
  • the first nozzle of the straight pipe is closed, the second nozzle is open, the straight pipe is provided with a plurality of the fuel injection holes, and the straight pipe is arranged parallel to the axis of the motor;
  • a part of the bent pipe is parallel to the straight pipe, and the other part is perpendicular to the straight pipe;
  • the first nozzle of the pipe is closed, and the second nozzle is connected with the pipe body of the straight pipe.
  • the width of the first oil collecting pan and the second oil collecting pan is the same as the width of the portion of the stator winding at the corresponding end that extends beyond the stator iron core.
  • the first oil collecting pan includes a first circular-arc disc body, two first circular-arc-shaped side edges and a plurality of first separating ribs, and the two first circular-arc-shaped side edges are located in the The two sides of the first circular arc body are raised upward, and the plurality of first separation ribs are evenly connected between the two first circular arc-shaped side edges, so that the first circular arc plate is A plurality of first oil collecting grids are formed on the body, and each of the first oil collecting grids is provided with a plurality of the through holes;
  • the second oil collecting pan includes a second arc-shaped body, two second arc-shaped sides and a plurality of second partition ribs, and the two second arc-shaped sides are located on the second arc. Both sides of the disc body are raised upward, and the plurality of second separating ribs are evenly connected between the two second arc-shaped side edges, so as to form a plurality of Second oil collection grids, each of the second oil collection grids is provided with a plurality of the through holes.
  • the arcs of the first oil collecting pan and the second oil collecting pan are both 120 degrees.
  • Each of the first oil collecting grid and each of the second oil collecting grids are provided with three through holes, the centers of the three through holes form an isosceles triangle, and the top of the isosceles triangle The corners are smaller than the bottom corners, and the three through holes are located on the lower side of the oil collecting grid where they are located.
  • the entirety of the first oil collecting pan and the second oil collecting pan is symmetrical about the center line of the respective circular arcs.
  • two ends of the first oil collecting pan adjacent to the arc-shaped side of the second oil collecting pan are respectively provided with upright first lugs, and connecting pipes are integrated on the first lugs;
  • the two ends of the second oil collecting pan adjacent to the arc-shaped side of the first oil collecting pan are respectively provided with upright second lugs, and the second lugs are opposite to the first lugs, so A connecting column is integrated on the second lug, and the connecting column is configured to be inserted into the connecting pipe.
  • two ends of the arc-shaped side of the first oil collecting pan away from the second oil collecting pan are respectively integrated with inserting posts, and the inserting posts are suitable for connecting with the gearbox casing. the hole interference fit;
  • the middle of the second oil collecting pan away from the arc-shaped side of the first oil collecting pan protrudes upward to form a positioning portion, and the end surface of the positioning portion is wavy and is suitable for connecting with the gearbox casing. inner wall contact.
  • the embodiments of the present application provide another oil-cooled motor cooling system, wherein the system includes a motor, an oil collecting assembly, and an oil injection pipe;
  • the fuel injection pipe is located above the oil collecting assembly, and is provided with a plurality of fuel injection holes whose openings face the oil collecting assembly, and the fuel injection pipe is used for the oil collecting through the plurality of fuel injection holes.
  • the oil collecting assembly includes a first oil collecting pan and a second oil collecting pan, the first oil collecting pan and the second oil collecting pan are respectively located above the first end and the second end of the stator winding of the motor , each of the first oil collecting pan and the second oil collecting pan is an arc shape adapted to the shape of the stator winding, and a plurality of first oil collecting pans are provided on the first oil collecting pan a through hole, a plurality of second through holes are opened on the second oil collecting pan, and the oil collecting assembly is used to pass through the first through hole and the second through hole, so that the fuel injection pipe can pass through the first through hole and the second through hole The sprayed cooling oil flows onto the stator windings.
  • the fuel injection pipe includes a straight pipe and a bent pipe
  • the first end of the straight pipe is closed, the second end is open, the straight pipe is provided with a plurality of the fuel injection holes, and the straight pipe is arranged in parallel with the axis of the motor;
  • the bent tube includes a first tube body and a second tube body connected to each other, the first tube body is aligned with the straight tube, and the end of the second tube body away from the first tube body is connected to the straight tube.
  • the pipe bodies of the straight pipes are connected, the first pipe body is provided with a plurality of the fuel injection holes, and the end of the first pipe body away from the second pipe body is closed.
  • the fuel injection pipe is made of stainless steel.
  • the width of the first oil collecting pan is adapted to the width of the part where the first end of the stator winding extends beyond the stator iron core, and the second oil collecting pan is the same as the second oil collecting pan of the stator winding.
  • the width of the portion of the end beyond the stator core is adapted.
  • the first oil collecting pan includes a first arc-shaped disk body, two first arc-shaped sides and a plurality of first separating ribs, and the two first arc-shaped sides are located at the The two sides of the first arc-shaped disk body protrude in the direction away from the stator winding, the plurality of first separation ribs are evenly connected between the two first arc-shaped side edges, Thereby, a plurality of first oil collecting grids are formed on the first arc-shaped disc, and the first through holes are provided on each of the first oil collecting grids;
  • the second oil collecting pan includes a second arc-shaped body, two second arc-shaped sides and a plurality of second separating ribs, and the two second arc-shaped sides are located in the second circle. Both sides of the arc-shaped disk body are protruded in a direction away from the stator winding, and the plurality of second separation ribs are evenly connected between the two second arc-shaped side edges, so that the A plurality of second oil collecting grids are formed on the second arc-shaped disk, and each of the second oil collecting grids is provided with the second through holes.
  • the arcs of the first oil collecting pan and the second oil collecting pan are both 120 degrees.
  • each of the first oil collecting compartments is provided with three first through holes, the centers of the three first through holes form an isosceles triangle, and two of the first through holes are close to each other.
  • Each of the second oil collecting compartments is provided with three second through holes, the centers of the three second through holes form an isosceles triangle, and two of the second through holes are close to the oil collecting compartment where they are located. the lower edge of the .
  • both the first oil collecting pan and the second oil collecting pan are symmetrical about their respective arc centerlines.
  • two ends of the first oil collecting pan adjacent to the arc-shaped side of the second oil collecting pan are respectively provided with upright first lugs, and the first lugs are provided with connecting pipes;
  • the two ends of the second oil collecting pan adjacent to the arc-shaped side of the first oil collecting pan are respectively provided with upright second lugs, and the second lugs are opposite to the first lugs, so The second lug is provided with a connecting column, and the connecting column is inserted into the connecting pipe.
  • the oil-cooled motor cooling system further includes a gearbox housing
  • Two ends of the first oil collecting pan away from the arc-shaped side of the second oil collecting pan are respectively provided with inserting posts, and the inserting posts are suitable for interference fit with the holes on the gearbox housing. ;
  • a positioning portion is formed in the middle of the arc-shaped side of the second oil collecting pan away from the first oil collecting pan, and the positioning portion protrudes in a wave-like shape toward the direction away from the stator winding, and the positioning portion is suitable for connecting with the stator winding.
  • the inner walls of the gearbox housing are in contact.
  • both the first oil collecting pan and the second oil collecting pan are injection molded parts made of high temperature resistant materials.
  • the system further includes an oil guide pipe;
  • the oil guide pipe is communicated with the inside of the rotor shaft of the motor, and is used for injecting the cooling oil provided by the oil pump into the inside of the rotor shaft;
  • the two ends of the shaft body of the rotor shaft of the motor are respectively provided with a first oil throwing hole and a second oil throwing hole, and the first oil throwing hole is used for throwing the cooling oil inside the rotor shaft to support the the first bearing of the rotor shaft, the second oil throwing hole is used for throwing the cooling oil inside the rotor shaft to the second bearing supporting the rotor shaft, the first bearing and the second bearing respectively near both ends of the rotor shaft.
  • the axis of the first oil throwing hole is aligned with the first bearing, and the axis of the second oil throwing hole is aligned with the second bearing.
  • each of the first oil slinging holes and the second oil slinging holes is multiple, and the plurality of first oil slinging holes and the plurality of second oil slinging holes surround the rotor shaft respectively. Axle distribution.
  • an embodiment of the present application further provides a vehicle, where the vehicle includes the above-mentioned oil-cooled motor cooling system.
  • the oil-cooled motor cooling system of the embodiment of the present application includes an oil collecting assembly, an oil injection pipe, and a motor.
  • the fuel injection pipe is provided with a plurality of fuel injection holes, so that the cooling oil in the fuel injection pipe can be sprayed onto the oil collecting assembly.
  • the oil collecting assembly includes a first oil collecting pan and a second oil collecting pan which are arc-shaped and have a plurality of through holes. The cooling oil in the oil collecting pan drips onto the stator winding and the stator iron core through the through holes, thereby The cooling of the stator winding and the stator core is achieved.
  • the system utilizes oil collecting components and fuel injection pipes with relatively simple structures to cool the stator windings and stator iron cores that generate more heat. The cooling range is wide and the cooling effect is good, avoiding the long-term accumulation of heat and causing the motor efficiency is reduced.
  • the rotor shaft of the motor may also be provided with a plurality of first oil throwing holes and a plurality of second oil throwing holes, and the oil guide pipe is used to inject the cooling oil into the rotor shaft, so that when the rotor rotates
  • the oil guide pipe is used to inject the cooling oil into the rotor shaft, so that when the rotor rotates
  • the cooling oil passes through the first oil throwing hole and the second oil throwing hole on the rotor shaft, it is splashed to the inner side of the bearings on both sides of the rotor shaft, and then bounces back to the inner side of the electric stator winding and the electric rotor iron core. Cooling of the inner side of the stator windings, the rotor core and the bearings further improves the cooling effect.
  • FIG. 1 is a main cross-sectional view of an oil-cooled motor cooling system provided by an embodiment of the application;
  • FIG. 2 is a schematic structural diagram of a first oil collecting pan provided by an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of a second oil collecting pan provided by an embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a fuel injection pipe provided by an embodiment of the application.
  • FIG. 5 is a schematic diagram of the working principle of the oil-cooled motor cooling system provided by the embodiment of the present application.
  • FIG. 6 is a schematic cross-sectional view of a rotor shaft provided with a plurality of oil throwing holes distributed around the shaft body at both ends of the shaft body according to an embodiment of the present application.
  • the embodiment of the present application provides an oil-cooled motor cooling system.
  • the system includes an oil collecting assembly 1 , an oil injection pipe 2 and a motor 4 .
  • the motor 4 includes a rotor shaft 41 , first and second bearings 42 and 43 supporting the rotor shaft 41 , a stator winding 44 , a stator iron core 45 and a rotor iron core 46 .
  • the fuel injection pipe 2 is located above the oil collecting assembly 1 , for example, the fuel injection pipe 2 is located directly above the oil collecting assembly 1 , that is, the center of the fuel injection pipe 2 is located directly above the center of the oil collecting assembly 1 in the vertical direction.
  • the fuel injection pipe 2 is provided with a plurality of fuel injection holes 23 opening toward the oil collecting assembly 1 .
  • the fuel injection pipe 2 is used to spray cooling oil to the oil collecting assembly 1 through a plurality of fuel injection holes 23 .
  • the oil collecting assembly 1 includes a first oil collecting pan 11 and a second oil collecting pan 12 .
  • the first oil collecting pan 11 and the second oil collecting pan 12 are respectively located above both ends of the stator winding 44, that is, the first oil collecting pan 11 and the second oil collecting pan 12 are respectively located above the first end and the second end of the stator winding 44,
  • the first oil collecting pan 11 and the second oil collecting pan 12 are arc shapes adapted to the shape of the stator winding 44, and each has a plurality of through holes, that is, the first oil collecting pan 11 is provided with a plurality of through holes.
  • the first through holes 118 and the second oil collecting pan 12 are provided with a plurality of second through holes 128 , so that the oil collecting assembly 1 can pass the plurality of first through holes 118 and the plurality of second through holes 128 to the fuel injection pipe 2 .
  • the sprayed cooling oil flows onto the stator windings 44 to cool the stator windings 44 .
  • the oil collecting assembly 1 can buffer the high-pressure cooling oil sprayed by the fuel injection pipe 2, and prevent the cooling oil from being directly sprayed on the stator winding 44 and causing damage to the insulating layer of the copper wire.
  • first oil collecting pan 11 and the second oil collecting pan 12 are arc shapes adapted to the shape of the stator winding 44 , so that the cooling oil can be guided, so that the stator winding 44 can be better cooled.
  • the contour of the edge of the stator winding 44 close to the first oil collecting pan 11 is in the shape of a first arc
  • the contour of the edge of the first oil collecting pan 11 close to the stator winding 44 is in the shape of a second arc
  • the first arc is in the shape of a second arc. substantially concentric with the second arc.
  • the cooling oil with a certain flow rate flows into the fuel injection pipe 2 , it is sprayed onto the disk bodies of the first oil collecting pan 11 and the second oil collecting pan 12 through the fuel injection holes 23 on the fuel injection pipe 2 .
  • the cooling oil on the two oil collecting pans flows to the corresponding ends of the stator windings 44 below through the through holes on the pans respectively, so as to cool both ends of the stator windings 44 .
  • the cooling oil accumulated in the two oil collecting pans reaches its maximum oil storage limit, the cooling oil will overflow from the oil collecting pans, thereby cooling the end faces of the stator windings 44 .
  • the cooling oil flowing into the fuel injection pipe 2 can also be directly injected onto the stator core 45 through the fuel injection hole 23 , thereby cooling the stator core 45 .
  • stator winding 44 refers to the two parts of the stator winding 44 that are not covered by the stator iron core 45 . end exposed. It should be understood that when the motor is working, the stator winding 44 generates a large amount of heat and has a high temperature, so the first oil collecting pan 11 and the second oil collecting pan 12 need to avoid contact with the stator winding 44 .
  • Both the oil collecting assembly 1 and the fuel injection pipe 2 are adapted to be connected to the transmission case 5, and the oil collecting assembly 1 and the fuel injection pipe 2 can be fixed in a preset position through the transmission case 5, so as to realize their respective functions .
  • the transmission case 5 has oil passages, so that the cooling oil provided by the oil pump M can be delivered to the oil guide pipe 3 and the fuel injection pipe 2 through the corresponding oil passages.
  • the specific structure of the upper oil passage is not limited.
  • the fuel injection pipe is located above the oil collecting assembly, and the two oil collecting discs are respectively located above both ends of the stator winding, so that the cooling oil in the fuel injection pipe can be sprayed to the two The cooling oil on the oil collecting pan, and then the cooling oil on the two oil collecting pans can flow to both ends of the stator winding through the through holes, so as to cool the stator winding with larger heat generation, and the cooling effect is better, which can improve the motor performance. work efficiency.
  • the structures of the fuel injection pipe 2 , the first oil collecting pan 11 and the second oil collecting pan 12 are set as follows in the embodiment of the present application.
  • the fuel injection pipe 2 may include a straight pipe 21 and a bent pipe 22 .
  • the first end of the straight pipe 21 is closed, the second end is open, and a plurality of oil injection holes 23 are arranged on it.
  • the open end is used to receive the cooling oil
  • the closed end is used to block the flow of the cooling oil, thereby forcing the
  • the cooling oil can only be sprayed toward the oil collecting assembly 1 through the oil injection hole 23, and the straight pipe 21 is arranged in parallel with the axis of the motor 4, wherein the open second end can be connected with the oil pump M, so as to receive the oil provided by the oil pump M. cooling oil.
  • the bent tube 22 includes a first tube body 221 and a second tube body 222 that are connected to each other, wherein the first tube body 221 is parallel to the straight tube 21 , and the end of the second tube body 222 away from the first tube body 221 is parallel to the straight tube 21 .
  • the second pipe body 222 can be perpendicular to the straight pipe 21, so that the cooling oil in the straight pipe 21 can be transported to the first pipe body 221 through the second pipe body 222, and the first pipe body 221 is provided with A plurality of oil injection holes 23, one end of the first pipe body 221 away from the second pipe body 222 is closed, and the closed end is used to block the flow of cooling oil, so that the cooling oil can only pass through the oil injection holes 23 toward the oil collecting assembly 1 spray.
  • the first pipe bodies 221 of the straight pipe 21 and the bent pipe 22 span the first oil collecting pan 11 , the stator iron core 45 and the second oil collecting pan 12 respectively.
  • the extension direction of the straight pipe 21 and the extension direction of the first pipe body 221 of the bent pipe 22 are substantially parallel to the axial direction of the stator core 45 , and the two ends of each extend to the first oil collecting pan 11 and the second Above the two oil collecting pans 12 , the cooling oil in the fuel injection pipe 2 can be sprayed onto the first oil collecting pan 11 , the stator iron core 45 and the second oil collecting pan 12 through the oil injection holes 23 .
  • the straight pipe 21 and the first pipe body 221 of the bent pipe 22 are used to spray coolant to the two semicircular arc disc bodies of the first oil collecting pan 11 and the second oil collecting pan 12 respectively. That is, the straight pipe 21 sprays the coolant to a part of the first oil collecting pan 11 and a part of the second oil collecting pan 12 , and the first pipe body 221 of the bent pipe 22 sprays the other part of the first oil collecting pan 11 and the second oil collecting pan 12 . Another part of the oil collecting pan 12 is sprayed with cooling liquid, and the areas corresponding to the cooling liquid sprayed from the first pipe body 221 of the straight pipe 21 and the first pipe body 221 of the bent pipe 22 are approximately equal in area.
  • the function of the second tube body 222 of the bent tube 22 is to connect the straight tube 21 and the bent tube 22 .
  • the oil injection holes 23 can also be opened on the second pipe body 222 to cool the stator winding 44 .
  • the centerline of the fuel injection pipe 2 may be collinear with the arc centerlines of the first oil collecting pan 11 and the second oil collecting pan 12 , that is, the distance between the straight pipe 21 and the bent pipe 22
  • the first pipe body 221 is symmetrical about the arc centerlines of the two oil collecting pans.
  • the distance between the straight tube 21 and the first tube body 221 of the bent tube 22 should be reasonably set, because the two are carried out by the second tube body 222 of the bent tube 22 . Therefore, the length of the second pipe body 222 of the bent pipe 22 should be reasonably set.
  • the cooling oil injected in the middle of the fuel injection pipe 2 will be concentrated in the middle part of the stator iron core 45 , causing the stator iron core 45
  • the cooling effect of other parts of the stator core 45 is not good; if the distance between the two is too long, the cooling oil sprayed in the middle of the fuel injection pipe 2 is concentrated on both sides of the stator core 45, resulting in poor cooling effect of the middle part of the stator core 45. it is good.
  • the lengths of the straight pipe 21 and the first pipe body 221 of the bent pipe 22 are, for example, corresponding to the distance between the first oil collecting pan 11 and the second oil collecting pan 12 , for example, are approximately the same or exceed a part.
  • the distance between the first oil collecting pan 11 and the second oil collecting pan 12 depends on the specific structure of the motor 4 . Therefore, the length of the first pipe body 221 of the straight pipe 21 and the bent pipe 22 should be set according to the specific structure of the motor 4 .
  • the straight pipe 21 is provided with three fuel injection holes 23
  • the first pipe body 221 of the bent pipe 22 is provided with three fuel injection holes 23
  • the second pipe body 222 is provided with three fuel injection holes 23 .
  • the fuel injection pipe 2 has a better effect of injecting fuel to the outside, and can meet the requirements of use.
  • the distance between the three fuel injection holes 23 on the first pipe body 221 of the straight pipe 21 and the bent pipe 22 should be reasonably set according to the specific situation, so that the cooling from the fuel injection pipe 2 Oil is sprayed evenly onto both oil pans.
  • the straight pipe 21 may continue to extend at the connection with the bent pipe 22, and the extension part is suitable for connecting with the transmission case
  • the corresponding holes on the body 5 are interference-fitted. It should be understood that, the above-mentioned extension portion of the straight pipe 21 is only for fixing the fuel injection pipe on the transmission case 5, so it is not necessary to provide the fuel injection hole 23 thereon.
  • the entire fuel injection pipe 2 may be made of stainless steel, so that sufficient strength can be ensured and rust is not easy.
  • the width of the first oil collecting pan 11 is adapted to the width of the part where the first end of the stator winding 44 extends beyond the stator iron core 45, for example, the widths of the two can be The same, or the difference in width between the two is smaller, that is, the width of the first oil collecting pan 11 may be slightly larger or slightly smaller than the width of the portion where the first end of the stator winding 44 extends beyond the stator iron core 45, so that the first oil collecting pan 11 It can be covered just above the part of the stator winding 44 beyond the stator core 45 at this end, so that the cooling effect at both ends of the stator winding 44 will not be affected due to the short width, and the cooling oil will not be prevented from overflowing due to the long width.
  • the downflow cools the end faces of the stator windings 44 .
  • the first oil collecting pan 11 may include a first circular arc-shaped pan body 116 , two first circular arc-shaped side edges 117 and a plurality of first separating ribs 111 .
  • the two first arc-shaped side edges 117 are respectively located on both sides of the first arc-shaped disk body 116 and protrude in a direction away from the stator winding 44 , and the plurality of first separating ribs 111 are evenly connected to the two first between the arc-shaped side edges 117 , a plurality of first oil collecting grids 112 are formed on the first arc-shaped disk body 116 , and each first oil collecting grid 112 is provided with a plurality of first through holes 118 .
  • the first oil collecting pan 11 is equivalent to a shallow groove, and the shallow groove is divided into a plurality of small squares. Due to the existence of the plurality of first oil collecting grids 112, the cooling oil sprayed from the fuel injection pipe 2 onto the first oil collecting pan 11 can be temporarily accumulated to form an oil surface of a certain height, which is beneficial for the cooling oil to pass through the first oil collecting pan 11.
  • the first through holes 118 on the oil pan 11 flow onto the stator windings 44 below; otherwise, if the first oil collecting grid 112 does not exist, the cooling oil sprayed onto the first oil collecting pan 11 can easily follow the pan As a result, only a small amount of cooling oil can flow through the first through hole 118 to the lower stator winding 44, and the cooling effect is not good.
  • the above-mentioned plurality of first separating ribs 111 can not only play the role of separating the first circular arc-shaped disc body 116 into a plurality of first oil collecting grids 112, but also play the role of separating the two first circles 112 from each other. Reinforcing effect of arc-shaped sides 117 .
  • the height of the protrusions of the plurality of first separating ribs 111 should be appropriate. If the height is too low, an oil surface of a certain height cannot be formed, which is not conducive to the passage of the cooling oil sprayed onto the first oil collecting pan 11 . The through holes on the pan body flow downward; if the height is too high, it will be unfavorable for the cooling oil in the first oil collecting pan 11 to overflow outward, resulting in poor cooling effect on the end face of the stator winding 44 below.
  • the radian of the first oil collecting pan 11 may be 120 degrees, that is, the first oil collecting pan 11 covers one third of the circumference of the stator winding 44 at the corresponding end. . Based on the drainage effect of the first oil collecting pan 11 with such an arc, the cooling oil can sufficiently cool the stator winding 44 at the end.
  • each first oil collecting grid 112 may be provided with three first through holes 118 , and the circle centers of the three first through holes 118 may form a Isosceles triangle, in which the two first through holes 118 are close to the lower edge of the oil collecting grid.
  • the three first through holes 118 may also be located in the lower half of the oil collecting compartment.
  • the distance between the upper first through hole 118 and the lower two first through holes 118 may be greater than the distance between the lower two first through holes 118 .
  • the location of the three first through holes 118 is in line with the flow trend of the cooling liquid, so that more cooling oil can flow through the first through holes 118 . Therefore, through the above-mentioned structural design, a better oil drenching effect can be achieved, thereby achieving good cooling of the stator windings 44 .
  • the first oil collecting pan 11 as a whole can be symmetrical about its arc centerline, that is, the first oil collecting pan 11 on both sides of the arc centerline
  • the number of the first oil collecting grids 112 is the same, and the first through holes 118 on the two first oil collecting grids 112 corresponding to the positions are also symmetrical with respect to the center line of the arc.
  • first oil collecting grids 112 may be formed on the first oil collecting pan 11 , that is, there are three first oil collecting grids 112 on both sides of the arc centerline of the first oil collecting pan 11 respectively.
  • the oil collecting grid 112 facilitates the accumulation and flow of cooling oil on each semi-circular disc.
  • the second oil collecting pan 12 can have a similar structural design as the first oil collecting pan 11 , so only the structure of the second oil collecting pan 12 will be briefly described below, and the technical effects brought by its various structural features Alternatively, for specific functions, reference may be made to the corresponding features of the first oil collecting pan 11 , which will not be repeated here.
  • the width of the second oil collecting pan 12 is adapted to the width of the part where the second end of the stator winding 44 extends beyond the stator iron core 45, for example, the widths of the two can be The same, or the difference in width between the two is smaller, that is, the width of the second oil collecting pan 12 may be slightly larger or smaller than the width of the portion where the second end of the stator winding 44 extends beyond the stator iron core 45 .
  • the second oil collecting pan 12 may include a second arc-shaped pan body 126 , two second arc-shaped side edges 127 and a plurality of second partition ribs 121 , and two second arc-shaped side edges 121 .
  • the sides 127 are respectively located on both sides of the second arc-shaped disk body 126 and protrude in a direction away from the stator winding 44 , and a plurality of second separating ribs 121 are evenly connected between the two second arc-shaped side sides 127 . , so that a plurality of second oil collecting grids 122 are formed on the second arc-shaped disc body 126 .
  • the arc of the second oil collecting pan 12 may be 120 degrees.
  • each second oil collecting grid 122 may be provided with three second through holes 128 , and the circle centers of the three second through holes 128 may constitute An isosceles triangle, wherein the two second through holes 128 are close to the lower edge of the oil collecting grid.
  • the entire second oil collecting pan 12 may be symmetrical about its arc centerline.
  • second oil collecting grids 122 may be formed on the second arc-shaped pan body 126 , that is, there are three second oil collecting grids 122 on both sides of the arc centerline of the second oil collecting pan 12 respectively. Oil collection grid 122.
  • the widths of the parts of the stator winding 44 beyond the stator core 45 may be different, so the widths of the first oil collecting pan 11 and the second oil collecting pan 12 are not necessarily the same.
  • the widths of the first oil collecting pan 11 and the second oil collecting pan 12 are not necessarily the same.
  • the number of oil collecting grids, the number and position of through holes in each oil collecting grid, and the radian of the oil collecting pan body, etc. can be the same, so that the cooling oil can pass through the different branches of the fuel injection pipe. Evenly flow onto the stator windings 44 to achieve uniform cooling of the stator windings 44 .
  • the distance between the first oil collecting pan 11, the second oil collecting pan 12 and the stator winding 44 affects the cooling effect. If the distance is too large, the flow path of the cooling oil will be too long, and the cooling time difference of each part of the stator winding 44 will be relatively short. If the distance is too small, the impact force of the cooling oil sprayed from the oil injection holes 23 will be large, which is easy to damage the insulating layer on the surface of the copper wire of the stator winding 44 . After comparative tests, in the embodiment of the present application, the distances between the first oil collecting pan 11 and the second oil collecting pan 12 and the corresponding stator windings 44 can be both 1.6 mm, so that the above problems can be better avoided.
  • the first oil collecting pan 11 and the second oil collecting pan 12 can be fixed together to form a whole, and then the first oil collecting pan 11 and the second oil collecting pan 12 can be fixed together.
  • the entirety formed by the first oil collecting pan 11 and the second oil collecting pan 12 is fixed.
  • two ends of the first oil collecting pan 11 adjacent to the arc-shaped side of the second oil collecting pan 12 may be respectively provided with upright first lugs 113 , and the first convex The lugs 113 are provided with connecting pipes 114; as shown in FIG.
  • the two ends of the second oil collecting pan 12 adjacent to the arc-shaped side of the first oil collecting pan 11 may be respectively provided with upright second lugs 123, the second The lug 123 is opposite to the first lug 113 , and the second lug 123 has a connecting column 124 , and the connecting column 124 is inserted into the connecting pipe 114 .
  • the connecting post 124 can be easily inserted into the connecting pipe 114. It should be understood here that after the connecting post 124 and the connecting pipe 114 are matched, the first oil collecting pan 11 and the second oil collecting pan 12 The distance between them should be the same as the set spacing.
  • the first oil collecting pan 11 is far away from the second Both ends of the arc-shaped side of the oil collecting pan 12 may respectively have inserting posts 115, and the inserting posts 115 are suitable for interference fit with the holes on the gearbox housing 5; as shown in FIG. 4, the second oil collecting A positioning portion 125 may be formed in the middle of the arc-shaped side of the pan 12 away from the first oil collecting pan 11 .
  • the positioning portion 125 is wavy and protrudes in the direction away from the stator winding 44 .
  • the positioning portion 125 is suitable for connecting with the gearbox housing 5 . contact with the inner wall.
  • the end surface of the positioning portion 125 is wavy, which facilitates the cooling oil of the second oil collecting pan 12 to overflow outward to cool the end surface of the stator winding 44 .
  • the plug column 115 on the first oil collecting pan 11 is fixedly connected with the gearbox housing 5, and the positioning part 125 on the second oil collecting pan 12 is in contact with the inner wall of the gearbox housing 5, so that the collecting The oil assembly 1 is integrally fixed at a predetermined position.
  • the oil-cooled motor cooling system provided by the above-mentioned embodiments of the present application is located inside the gearbox housing 5 as a whole, so that the first oil collecting pan 11 and the second oil collecting pan 12 can be fixed to the gearbox housing 5 . .
  • the first oil collecting pan 11 and the second oil collecting pan 12 can be both injection molded parts, and can be integrally formed by an injection molding process, so that the weight of the pan body can be reduced. And since the stator windings 44 under the first oil collecting pan 11 and the second oil collecting pan 12 will generate a lot of heat during operation, the first oil collecting pan 11 and the second oil collecting pan 12 can be made of high temperature resistant materials. to make.
  • the oil-cooled motor cooling system may further include an oil guide pipe 3, which is communicated with the interior of the rotor shaft 41 of the motor 4 for cooling oil. Injected into the rotor shaft 41 .
  • the oil guide pipe 3 may be connected to the oil pump M, aligned with the rotor shaft 41 in the axial direction of the rotor shaft 41 , and inject the cooling oil provided by the oil pump M into the inside of the rotor shaft 41 .
  • Both ends of the shaft body of the rotor shaft 41 are respectively provided with a first oil throwing hole 411 and a second oil throwing hole 412 , the first oil throwing hole 411 corresponds to the first bearing 42 supporting the rotor shaft 41 , and the second oil throwing hole 412 corresponds to
  • the first bearing 42 and the second bearing 43 are respectively close to both ends of the rotor shaft 41, that is, the first bearing 42 is close to the first end of the rotor shaft 41, and the second bearing 43 is close to the second end of the rotor shaft 41, so that the first oil throwing hole 411 can throw the cooling oil in the rotor shaft 41 to the inside of the first bearing 42, and the second oil throwing hole 412 can cool the cooling oil in the rotor shaft 41 The oil is thrown to the inside of the second bearing 43 .
  • the inner side of the first bearing 42 refers to the side of the first bearing 42 close to the rotor shaft 41 ; the inner side of the second bearing 43 refers to the side of the second bearing 43 close to the rotor shaft 41 .
  • the first oil throwing hole 411 and the second oil throwing hole 412 may both be closer to the outer end than the inner end.
  • the inclined holes at the end of the rotor shaft 41 that is, the axes of the first oil throwing hole 411 and the second oil throwing hole 412 are aligned with the first bearing 42 and the second bearing 43 respectively.
  • a plurality of first oil rejection holes 411 and second oil rejection holes 412 distributed around the shaft body of the rotor shaft 41 may be provided at both ends of the rotor shaft 41 ,
  • the axes of the first oil throwing hole 411 and the second oil throwing hole 412 are aligned with the center positions of the inner sides of the first bearing 42 and the second bearing 43 respectively.
  • the number of the first oil throwing holes 411 and the second oil throwing holes 412 can be three. By opening such three oil throwing holes at both ends of the shaft body of the rotor shaft 41, a sufficient amount of cooling can be achieved. Oil is sprayed to the vicinity of the first bearing 42 and the second bearing 43 .
  • the oil guide pipe 3 can be connected to the transmission case 5 , and the oil guide pipe 3 can be fixed at a preset position through the transmission case 5 .
  • the transmission case 5 has oil passages, so that the cooling oil provided by the oil pump M can be delivered to the oil guide pipe 3 through the corresponding oil passages.
  • the structure is not limited.
  • the oil-cooled motor cooling system of the embodiment of the present application includes an oil collection assembly, an oil injection pipe, an oil guide pipe, and a motor.
  • the rotor shaft of the motor is provided with a plurality of first oil throwing holes and a plurality of second oil throwing holes, and the oil guide pipe is used to inject cooling oil into the rotor shaft, so that when the rotor rotates, the cooling oil passes through the holes on the rotor shaft.
  • the first oil throwing hole and the second oil throwing hole are thrown to the inner side of the bearings on both sides of the rotor shaft, and then bounced to the inner side of the stator winding of the motor and the rotor iron core, so as to realize the inner side of the stator winding and the rotor iron core. and bearing cooling.
  • the fuel injection pipe is provided with a plurality of fuel injection holes, so that the cooling oil in the fuel injection pipe can be sprayed onto the oil collecting assembly.
  • the oil collecting assembly includes a first oil collecting pan and a second oil collecting pan which are arc-shaped and have a plurality of through holes.
  • the cooling oil in the oil collecting pan drips onto the stator winding and the stator iron core through the through holes, thereby The cooling of the stator winding and the stator core is achieved.
  • the cooling system of the embodiment of the present application utilizes the oil collecting assembly, the oil injection pipe and the oil guide pipe with relatively simple structures, and realizes the cooling of the inner and outer sides of the stator winding, the stator iron core, the rotor iron core, and the rotor shaft through two cooling oil paths. Direct cooling on both sides and inside the bearing, wide cooling range and good cooling effect.
  • the cooling oil in the gearbox oil tank reaches the preset oil inlet temperature of the motor 4 through the cooling or heating action of the oil cooler N, it is pumped into the hydraulic system of the gearbox by the oil pump M and passes through the gearbox casing.
  • the oil passages on the body 5 are respectively transported to the fuel injection pipe 2 and the oil guide pipe 3, that is, the oil-cooled motor cooling system provided by the embodiment of the present application has two oil-cooling paths:
  • the cooling oil with a certain flow rate is sprayed into the rotor shaft 41 through the oil guide pipe 3.
  • the rotating rotor shaft 41 makes the internal cooling oil splash, and the thrown cooling oil passes through the first oil throwing hole. 411 and the second oil throwing hole 412 are thrown to the inside of the first bearing 42 and the second bearing 43, so as to cool the first bearing 42 and the second bearing 43, and the cooling oil will also be washed by the first bearing 42 and the second bearing 43.
  • the bearings 43 bounce to the inner side of the stator winding 44 and both sides of the rotor core 46 , thereby cooling the inner side of the stator winding 44 and both sides of the rotor core 46 .
  • the second oil cooling path the cooling oil flowing into the fuel injection pipe 2 has two flow sub-paths: a part of the cooling oil flows into the straight pipe 21, since the straight pipe 21 spans the first oil collecting pan 11 and the stator iron core 45 and above the second oil collecting pan 12, so when this part of the cooling oil is flowing, when the cooling oil flows through the beginning of the straight pipe 21, the cooling oil can be sprayed to the first through the corresponding oil injection holes 23 on the straight pipe 21
  • One side of the oil collecting pan 11 is on the semi-circular arc body, and then this part of the cooling oil can be poured onto the stator winding 44 located under the semi-circular arc body on the side through the through holes on the disc body, so that this part of the stator winding 44 is affected.
  • One end is cooled.
  • the cooling oil flows through the middle portion of the straight pipe 21, the cooling oil is directly sprayed onto the stator core 45 through the corresponding oil injection holes 23 on the straight pipe 21, thereby cooling it.
  • the cooling oil flows through the end portion of the straight pipe 21, the cooling oil is sprayed onto the semi-circular disc on one side of the second oil collecting pan 12 through the corresponding oil injection holes 23 on the straight pipe 21, and then this part of the cooling oil passes through the disc.
  • the through holes on the body are showered onto the stator windings 44 located under the half disc body, thereby cooling this end of the stator windings 44 .
  • Another part of the cooling oil flows into the bent tube 22. Since the first tube body 221 of the bent tube 22 also straddles the first oil collecting pan 11, the stator iron core 45 and the second oil collecting pan 12, this part of the cooling oil flows into the bent tube 22.
  • the cooling oil is flowing, when the cooling oil flows through the beginning part of the first pipe body 221 of the bent pipe 22, the cooling oil is sprayed to the other side of the first oil collecting pan 11 through the corresponding oil injection holes 23 on the pipe body
  • the semi-circular arc disk body, and then this part of the cooling oil can be poured through the through holes in the disk body to the stator winding 44 located under the semi-circular arc disk body on the side, so as to cool this end of the stator winding 44 .
  • the cooling oil can be directly sprayed onto the stator core 45 through the corresponding oil injection holes 23 on the pipe body, thereby cooling it.
  • the cooling oil can be sprayed onto the other side of the semi-circular arc disc of the second oil collecting pan 12 through the corresponding oil injection holes 23 on the tube body
  • this part of the cooling oil can be showered onto the stator winding 44 located under the semi-circular disc body on the side through the through holes in the disc body, so as to cool this end of the stator winding 44 .
  • the oil-cooled motor cooling system can directly cool the outer and inner sides of the stator winding, the rotor core and the bearing, and the cooling range is wide and the cooling effect is good.
  • the oil-cooled motor cooling system utilizes the oil collecting assembly, the oil injection pipe and the oil guide pipe, and realizes the cooling of the inner side and the outer side of the stator winding, the stator iron core, the rotor, and the inner side of the bearings on both sides of the rotor shaft through two oil cooling paths.
  • cooling a wide range of cooling.
  • Both of the two oil cooling paths spray the cooling oil directly to the corresponding components of the motor, so the motor can be cooled in time, and the cooling effect is better, which avoids the long-term accumulation of heat, which reduces the efficiency of the motor and even affects the motor. life.
  • the amount of cooling oil required to achieve the same cooling effect is less, and the inlet temperature of the required cooling oil does not need to be very low, thereby reducing the load of the oil cooler.
  • the water jacket used in the existing water cooling method is relatively large and heavy, which increases the overall weight and cost of the gearbox.
  • the oil collecting assembly, the fuel injection pipe, and the oil guide pipe of the oil-cooled motor cooling system provided by the embodiment of the present application are all simple in structure, small in volume, and relatively light in weight, so that the overall weight of the gearbox is not increased.
  • the water jacket generally needs to be press-fitted with the stator core.
  • the interference fit is difficult and easy to heat unevenly, resulting in inconsistent deformation of the stator core, affecting the magnetic field generated by the motor, which in turn affects the normal performance of the motor. play.
  • the oil collecting assembly, the fuel injection pipe, and the oil guide pipe provided in the embodiment of the present application are fixed by the gearbox casing, which will not cause adverse effects on the motor.
  • Embodiments of the present application further provide a vehicle, which includes the above-mentioned oil-cooled motor cooling system.
  • a vehicle which includes the above-mentioned oil-cooled motor cooling system.

Landscapes

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

Abstract

一种油冷电机冷却系统，包括集油组件(1)、喷油管(2)和电机(4)。喷油管(2)上设有多个喷油孔(23)，从而喷油管(2)内的冷却油可以喷射到集油组件(1)上。集油组件(1)包括呈圆弧状且开设有多个通孔的第一集油盘(11)和第二集油盘(12)，集油盘里的冷却油再通过通孔滴淋在定子绕组(44)和定子铁芯(45)上。该油冷电机冷却系统用于车辆。通过结构均较为简单的集油组件和喷油管，实现了对发热量较多的定子绕组和定子铁芯的冷却，冷却范围广且冷却效果好。

Description

油冷电机冷却系统及车辆
本申请要求于2020年12月25日提交的申请号为202011562372.5、发明名称为“油冷电机冷却系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及车辆技术领域，特别涉及一种油冷电机冷却系统及车辆。
背景技术
大多数纯电动汽车或大部分混合动力汽车都是采用水冷方式来冷却电机。
采用水冷方式，需在电机的内部设置水套，以使冷却液在水套里进行循环，从而实现对电机的冷却，但这种水冷方式只能对铁芯进行冷却，导致电机的散热效果不好，致使电机效率较低。
发明内容
针对上述问题，本申请实施例提供了一种油冷电机冷却系统及车辆，可以改善电机的冷却效果。本申请实施例的具体方案如下：
第一方面，本申请实施例提供了一种油冷电机冷却系统，其中，所述系统包括集油组件、喷油管、导油管和电机；
所述电机包括转子轴、支撑所述转子轴的第一轴承和第二轴承、定子绕组、定子铁芯和转子铁芯；
所述导油管在所述转子轴的轴向上对准所述转子轴，用于将冷却油注入所述转子轴的内部；
所述转子轴的轴体两端分别设有第一甩油孔和第二甩油孔，所述第一甩油孔对应所述第一轴承，所述第二甩油孔对应所述电机的第二轴承；
所述喷油管位于所述集油组件中心的上方，且设置有开口朝向所述集油组件的多个喷油孔，所述喷油管用于接收所述油泵提供的冷却油并向所述集油组件喷射；
所述集油组件包括第一集油盘和第二集油盘；所述第一集油盘和所述第二集油盘分别设置在所述定子绕组两端的上方，所述第一集油盘和所述第二集油盘为与所述定子绕组的形状适配的圆弧状，且均开设有多个通孔，用于使从所述喷油管喷射出的冷却油流到所述定子绕组上；
所述集油组件、所述喷油管和所述导油管均适于连接到变速箱壳体。
可选地，所述第一甩油孔和所述第二甩油孔均为外端比内端更靠近所述转子轴的端部的斜孔。
可选地，所述喷油管包括直管和弯折管；
所述直管的第一管口封闭，第二管口敞口，所述直管上设有多个所述喷油孔，所述直管与电机的轴线平行设置；
所述弯折管一部分与所述直管平行，另一部分与所述直管垂直，所述弯折管与所述直管平行的部分上设有多个所述喷油孔；所述弯折管的第一管口封闭，第二管口与所述直管的管体连接。
可选地，所述第一集油盘和所述第二集油盘的宽度与对应端的所述定子绕组超出定子铁芯的部分的宽度相同。
可选地，所述第一集油盘包括第一圆弧盘身、两个第一圆弧状侧边和多个第一分隔筋，所述两个第一圆弧状侧边位于所述第一圆弧盘身的两侧且向上凸起，所述多个第一分隔筋间隔均匀地连接在所述两个第一圆弧状侧边之间，从而在所述第一圆弧盘身上形成多个第一集油格，每个所述第一集油格上设有多个所述通孔；
所述第二集油盘包括第二圆弧盘身、两个第二圆弧状侧边和多个第二分隔筋，所述两个第二圆弧状侧边位于所述第二圆弧盘身的两侧且向上凸起，所述多个第二分隔筋间隔均匀地连接在所述两个第二圆弧状侧边之间，从而在所述第二圆弧盘身上形成多个第二集油格，每个所述第二集油格上设有多个所述通孔。
可选地，所述第一集油盘和所述第二集油盘的弧度均为120度。
每个所述第一集油格和每个所述第二集油格内均设有三个所述通孔，所述三个通孔的圆心构成一个等腰三角形，所述等腰三角形的顶角小于底角，且所述三个通孔位于所在集油格的下侧。
可选地，所述第一集油盘和所述第二集油盘整体均关于各自的圆弧中心线 对称。
可选地，所述第一集油盘邻近所述第二集油盘的圆弧状侧边的两端分别设有竖立的第一凸耳，所述第一凸耳上集成有连接管；
所述第二集油盘邻近所述第一集油盘的圆弧状侧边的两端分别设有竖立的第二凸耳，所述第二凸耳与所述第一凸耳相对，所述第二凸耳上集成有连接柱，所述连接柱被设置为插接在所述连接管内。
可选地，所述第一集油盘远离所述第二集油盘的圆弧状侧边的两端分别集成有插接柱，所述插接柱适于与所述变速箱壳体上的孔过盈配合；
所述第二集油盘远离所述第一集油盘的圆弧状侧边的中间向上凸起形成定位部，所述定位部的端面呈波浪状，适于与所述变速箱壳体的内壁接触。
第二方面，本申请实施例提供了另一种油冷电机冷却系统，其中，所述系统包括电机、集油组件和喷油管；
所述喷油管位于所述集油组件的上方，且设置有开口朝向所述集油组件的多个喷油孔，所述喷油管用于通过所述多个喷油孔向所述集油组件喷射冷却油；
所述集油组件包括第一集油盘和第二集油盘，所述第一集油盘和所述第二集油盘分别位于所述电机的定子绕组的第一端和第二端的上方，所述第一集油盘和所述第二集油盘中的每个均为与所述定子绕组的形状适配的圆弧状，且所述第一集油盘上开设有多个第一通孔，所述第二集油盘上开设有多个第二通孔，所述集油组件用于通过所述第一通孔和所述第二通孔，使从所述喷油管喷射出的冷却油流到所述定子绕组上。
可选地，所述喷油管包括直管和弯折管；
所述直管的第一端为封闭，第二端为敞口，所述直管上设有多个所述喷油孔，所述直管与所述电机的轴线平行设置；
所述弯折管包括彼此相连的第一管体和第二管体，所述第一管体与所述直管行，所述第二管体远离所述第一管体的一端与所述直管的管体连接，所述第一管体上设有多个所述喷油孔，所述第一管体远离所述第二管体的一端为封闭。
可选地，所述喷油管为不锈钢材质。
可选地，所述第一集油盘的宽度与所述定子绕组的第一端超出所述定子铁芯的部分的宽度相适应，所述第二集油盘与所述定子绕组的第二端超出所述定 子铁芯的部分的宽度相适应。
可选地，所述第一集油盘包括第一圆弧状盘身、两个第一圆弧状侧边和多个第一分隔筋，所述两个第一圆弧状侧边位于所述第一圆弧状盘身的两侧且向远离所述定子绕组的方向凸起，所述多个第一分隔筋间隔均匀地连接在所述两个第一圆弧状侧边之间，从而在所述第一圆弧状盘身上形成多个第一集油格，每个所述第一集油格上设有所述第一通孔；
所述第二集油盘包括第二圆弧状盘身、两个第二圆弧状侧边和多个第二分隔筋，所述两个第二圆弧状侧边位于所述第二圆弧状盘身的两侧且向远离所述定子绕组的方向凸起，所述多个第二分隔筋间隔均匀地连接在所述两个第二圆弧状侧边之间，从而在所述第二圆弧状盘身上形成多个第二集油格，每个所述第二集油格上设有所述第二通孔。
可选地，所述第一集油盘和所述第二集油盘的弧度均为120度。
可选地，每个所述第一集油格内设有三个所述第一通孔，所述三个第一通孔的圆心构成一个等腰三角形，其中两个所述第一通孔靠近所在集油格的下侧边缘；
每个所述第二集油格内设有三个所述第二通孔，所述三个第二通孔的圆心构成一个等腰三角形，其中两个所述第二通孔靠近所在集油格的下侧边缘。
可选地，所述第一集油盘和所述第二集油盘均关于各自的圆弧中心线对称。
可选地，所述第一集油盘邻近所述第二集油盘的圆弧状侧边的两端分别设有竖立的第一凸耳，所述第一凸耳上具有连接管；
所述第二集油盘邻近所述第一集油盘的圆弧状侧边的两端分别设有竖立的第二凸耳，所述第二凸耳与所述第一凸耳相对，所述第二凸耳上具有连接柱，所述连接柱插接在所述连接管内。
可选地，所述油冷电机冷却系统还包括变速箱壳体；
所述第一集油盘远离所述第二集油盘的圆弧状侧边的两端分别具有插接柱，所述插接柱适于与所述变速箱壳体上的孔过盈配合；
所述第二集油盘远离所述第一集油盘的圆弧状侧边的中间形成定位部，所述定位部向远离定子绕组的方向呈波浪状凸起，所述定位部适于与所述变速箱壳体的内壁接触。
可选地，所述第一集油盘和所述第二集油盘均为耐高温材料制成的注塑件。
可选地，所述系统还包括导油管；
所述导油管与所述电机的转子轴的内部连通，用于将油泵提供的冷却油注入所述转子轴的内部；
所述电机的转子轴的轴体两端分别设有第一甩油孔和第二甩油孔，所述第一甩油孔用于将所述转子轴的内部的冷却油甩至支撑所述转子轴的第一轴承，所述第二甩油孔用于将所述转子轴的内部的冷却油甩至支撑所述转子轴的第二轴承，所述第一轴承和所述第二轴承分别靠近所述转子轴的两端。
可选地，所述第一甩油孔的轴线对准所述第一轴承，所述第二甩油孔的轴线对准所述第二轴承。
可选地，所述第一甩油孔和所述第二甩油孔均为多个，多个所述第一甩油孔和多个所述第二甩油孔分别环绕所述转子轴的轴体分布。
第三方面，本申请实施例还提供了一种车辆，所述车辆包括上述的油冷电机冷却系统。
本申请实施例的油冷电机冷却系统包括集油组件、喷油管和电机。其中，喷油管上设有多个喷油孔，从而喷油管内的冷却油可以喷射到集油组件上。集油组件包括呈圆弧状且开设有多个通孔的第一集油盘和第二集油盘，集油盘里的冷却油通过通孔滴淋在定子绕组和定子铁芯上，从而实现了对定子绕组和定子铁芯的冷却。该系统利用结构均较为简单的集油组件和喷油管，实现了对发热量较多的定子绕组和定子铁芯的冷却，冷却范围广且冷却效果好，避免了热量长时间堆积而使电机的效率降低。
此外，在本申请实施例中，电机的转子轴上还可设有多个第一甩油孔和多个第二甩油孔，导油管用于将冷却油注入转子轴内部，从而当转子转动时，冷却油通过转子轴上的第一甩油孔和第二甩油孔，被甩溅到转子轴两侧轴承的内侧，再被反弹到电定子绕组内侧和电转子铁芯上，实现了对定子绕组内侧、转子铁芯和轴承的冷却，进一步提高了冷却效果。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所 需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请实施例提供的油冷电机冷却系统的主剖视图；
图2为本申请实施例提供的第一集油盘的结构示意图；
图3为本申请实施例提供的第二集油盘的结构示意图；
图4为本申请实施例提供的喷油管的结构示意图；
图5为本申请实施例提供的油冷电机冷却系统的工作原理示意图；
图6为本申请实施例提供的轴体两端设有多个环绕轴体分布的甩油孔的转子轴的横截面示意图。
具体实施方式
为了使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请作进一步地详细描述，显然，所描述的实施例只是本申请一部份实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本申请保护的范围。
本申请实施例提供了一种油冷电机冷却系统，如图1所示，该系统包括集油组件1、喷油管2和电机4。
电机4包括转子轴41、支撑转子轴41的第一轴承42和第二轴承43、定子绕组44、定子铁芯45和转子铁芯46。喷油管2位于集油组件1的上方，例如，喷油管2位于集油组件1的正上方，即喷油管2的中心在竖直方向上位于集油组件1的中心的正上方。喷油管2设置有开口朝向集油组件1的多个喷油孔23。喷油管2用来通过多个喷油孔23向集油组件1喷射冷却油，例如，喷油管2可以与油泵M相连，从而能够接收来自油泵M的冷却油。
如图1、图3和图4所示，集油组件1包括第一集油盘11和第二集油盘12。第一集油盘11和第二集油盘12分别位于定子绕组44两端的上方，即第一集油盘11和第二集油盘12分别位于定子绕组44第一端和第二端的上方，并且，第一集油盘11和第二集油盘12为与定子绕组44的形状适配的圆弧状，且均开设有多个通孔，即第一集油盘11上开设有多个第一通孔118，第二集油盘12上开设有多个第二通孔128，从而集油组件1可以通过多个第一通孔118和多个第二 通孔128使喷油管2喷射出的冷却油流到定子绕组44上，对定子绕组44进行冷却。集油组件1可以对喷油管2所喷射出的高压冷却油起到缓冲作用，防止冷却油直接喷射在定子绕组44上而对铜线的绝缘层造成损伤。并且第一集油盘11和第二集油盘12为与定子绕组44形状适配的圆弧状，从而可以对冷却油起到导向作用，从而可以更好地对定子绕组44进行冷却。例如，定子绕组44与第一集油盘11接近的边缘轮廓呈第一圆弧状，相应地第一集油盘11与定子绕组44接近的边缘轮廓呈第二圆弧状，第一圆弧和第二圆弧基本同心。具有一定流速的冷却油流入喷油管2后，通过喷油管2上的喷油孔23被喷射到第一集油盘11和第二集油盘12的盘身上。两个集油盘上的冷却油分别通过盘身上的通孔淋流到下方的定子绕组44的相应端上，从而对定子绕组44的两端进行冷却。并且当两个集油盘内积存的冷却油达到其最大的存油极限后，冷却油会从集油盘内溢出，从而对定子绕组44的端面进行冷却。流入喷油管2的冷却油也能通过喷油孔23直接被喷射到定子铁芯45上，进而对定子铁芯45进行冷却。
需要说明的是，定子绕组44的两端即第一端和第二端指的是：定子绕组44未被定子铁芯45覆盖的两部分，这两部分从定子铁芯45轴向上的两端露出。且应当理解的是，电机在工作时，定子绕组44的发热量较大，温度较高，因而第一集油盘11和第二集油盘12需要避免与定子绕组44发生接触。
集油组件1和喷油管2均适于连接到变速箱壳体5，通过变速箱壳体5可以将集油组件1和喷油管2固定在预设的位置上，从而实现各自的功能。
需要说明的是，变速箱壳体5上具有油道，从而油泵M提供的冷却油可以通过相应的油道输送至导油管3和喷油管2内，本申请实施例对变速箱壳体5上的油道的具体结构不作限定。
本申请实施例提供的油冷电机冷却系统，喷油管位于集油组件上方，两个集油盘分别位于定子绕组两端的上方，从而喷油管内的冷却油可以通过喷油孔喷射到两个集油盘上，进而两个集油盘上的冷却油可以通过通孔流淋到定子绕组的两端上，从而对发热量较大的定子绕组进行冷却，冷却效果较好，进而可以提高电机的工作效率。
为了提高对定子绕组两端的冷却效果，本申请实施例对喷油管2、第一集油盘11和第二集油盘12的结构进行如下设置。
对于喷油管：
如图2所示，喷油管2可以包括直管21和弯折管22。
直管21的第一端为封闭，第二端为敞口，其上设有多个喷油孔23，敞口端用于接收冷却油，封闭端用于封堵冷却油的流动，从而迫使冷却油只能通过喷油孔23朝向集油组件1喷淋，且直管21与电机4的轴线平行设置，其中，敞口的第二端可以与油泵M连接，从而接收来自油泵M提供的冷却油。
弯折管22包括彼此相连的第一管体221和第二管体222，其中，第一管体221与直管21平行，第二管体222远离第一管体221的一端与直管21的管体连接，例如，第二管体222可以垂直于直管21，从而直管21内的冷却油可以通过第二管体222输送至第一管体221，第一管体221上设有多个喷油孔23，第一管体221远离第二管体222的一端为封闭，封闭端用于封堵冷却油的流动，从而迫使冷却油只能通过喷油孔23朝向集油组件1喷淋。
直管21和弯折管22的第一管体221分别横跨第一集油盘11、定子铁芯45和第二集油盘12。例如，直管21的延伸方向和弯折管22的第一管体221的延伸方向均与定子铁芯45的轴向大致平行，并且各自的两端分别延伸到了第一集油盘11和第二集油盘12的上方，从而喷油管2内的冷却油能够通过喷油孔23喷射到第一集油盘11、定子铁芯45和第二集油盘12上。
这里需要解释的是，直管21、弯折管22的第一管体221分别用来向第一集油盘11和第二集油盘12的两个半圆弧盘身喷射冷却液。即，直管21对第一集油盘11的一部分和第二集油盘12的一部分喷射冷却液，弯折管22的第一管体221对第一集油盘11的另一部分和第二集油盘12的另一部分喷射冷却液，直管21和弯折管22的第一管体221喷射的冷却液对应的区域的面积大致相等。弯折管22的第二管体222的作用是连接直管21和弯折管22。同时也可在第二管体222上开设喷油孔23，以对定子绕组44进行冷却。
为了实现定子绕组44的均匀冷却，应尽量保证第一集油盘11和第二集油盘12上的两个半圆弧盘身上流经的冷却油量相同，换句话说，使得第一集油盘11和第二集油盘12上的冷却油比较均匀地分布。因此，本申请实施例中，喷油管2的中心线可以与第一集油盘11和第二集油盘12的圆弧中心线共线，也即是直管21、弯折管22的第一管体221关于两个集油盘的圆弧中心线对称。
为了保证对定子铁芯45的冷却效果，直管21和弯折管22的第一管体221之间的距离应该合理设定，由于两者是借助弯折管22的第二管体222进行连接， 所以也即是弯折管22的第二管体222的长度应该合理设定。如果直管21和弯折管22的第一管体221之间的距离过短，那么喷油管2中部所喷射的冷却油都将集中在定子铁芯45的中间部分，导致定子铁芯45的其它部分冷却效果不好；如果两者的距离过长，那么喷油管2中部所喷射的冷却油都集中在定子铁芯45的两侧部分，导致定子铁芯45中间部分的冷却效果不好。
直管21、弯折管22的第一管体221的长度均例如与第一集油盘11和第二集油盘12之间距离相对应，例如大致相同或超出一部分。而第一集油盘11和第二集油盘12的间距取决于电机4的具体结构，因而直管21、弯折管22的第一管体221的长度应根据电机4的具体结构而设定。
本申请实施例通过多次模拟仿真实验，得到当直管21上设有三个喷油孔23，弯折管22的第一管体221上设有三个喷油孔23，且第二管体222上设有一个喷油孔23时，喷油管2向外喷油的效果较好，能够满足使用要求。
应当理解的是，直管21、弯折管22的第一管体221上的三个喷油孔23之间的距离要根据具体情况合理地设定，以使从喷油管2内的冷却油能够均匀地喷射到两个集油盘上。
可选地，为了将喷油管2固定在变速箱壳体5上，本申请实施例中，直管21可以在与弯折管22的连接处继续延伸，该延伸部分适于与变速箱壳体5上的相应孔过盈配合。应当理解的是，直管21的上述延伸部分仅是为了将喷油管固定在变速箱壳体5上，因此不必在其上设置喷油孔23。
由于从油泵M输送来的冷却油的油压较高，因此，本申请实施例中，喷油管2整体可以均为不锈钢材质，从而可以保证足够的强度，且不易生锈。
对于第一集油盘11和第二集油盘12：
为了实现对定子绕组44两端和两个端面更好的冷却，第一集油盘11宽度与定子绕组44的第一端超出定子铁芯45的部分的宽度相适应，例如两者的宽度可以相同，或者，两者的宽度差距较小，即第一集油盘11宽度可以略大于或者略小于定子绕组44的第一端超出定子铁芯45的部分的宽度，从而第一集油盘11能够正好罩设在该端定子绕组44超出定子铁芯45的部分上方，这样既不会因宽度过短而影响定子绕组44两端的冷却效果，也不会因宽度过长，妨碍冷却油溢出向下流动冷却定子绕组44的端面。
如图3所示，第一集油盘11可以包括第一圆弧状盘身116、两个第一圆弧 状侧边117和多个第一分隔筋111。两个第一圆弧状侧边117分别位于第一圆弧状盘身116的两侧且向远离定子绕组44的方向凸起，多个第一分隔筋111间隔均匀地连接在两个第一圆弧状侧边117之间，从而在第一圆弧状盘身116上形成多个第一集油格112，每个第一集油格112上设有多个第一通孔118。也即第一集油盘11相当于一个浅槽，该浅槽被分隔成多个小方格。由于多个第一集油格112的存在，从喷油管2喷射到第一集油盘11上的冷却油能够被暂时积存从而形成一定高度的油面，这样有利于冷却油通过第一集油盘11上的第一通孔118流淋到下方的定子绕组44上；否则，如果不存在第一集油格112，喷射到第一集油盘11上的冷却油很容易就顺着盘身的表面流动，导致仅有少量的冷却油能通过第一通孔118流淋到下方的定子绕组44上，冷却效果不好。
这里需要说明的是，上述多个第一分隔筋111既能起到将第一圆弧状盘身116分隔成多个第一集油格112的作用，又能起到对两个第一圆弧状侧边117的加强作用。
应当理解的是，多个第一分隔筋111凸起的高度应当适当，如果高度过低，会导致无法形成一定高度的油面，不利于使喷射到第一集油盘11上的冷却油通过盘身上的通孔向下流淋；如果高度过高，将不利于第一集油盘11内的冷却油向外溢出，导致对下方的定子绕组44的端面冷却效果不好。
为了实现对冷却油充分的引流，本申请实施例中，第一集油盘11的弧度可以为120度，也即第一集油盘11罩设住相应端的定子绕组44圆周的三分之一。基于这样弧度的第一集油盘11的引流作用，冷却油可以对该端定子绕组44进行充分的冷却。
为了保证第一集油盘11的淋油效果，如图3所示，每个第一集油格112可以设有三个第一通孔118，这三个第一通孔118的圆心可以构成一个等腰三角形，其中两个第一通孔118靠近所在集油格的下侧边缘。三个第一通孔118还都可位于所在集油格的下半部分。位于上方的第一通孔118与位于下方的两个第一通孔118之间的距离可以大于位于下方的两个第一通孔118之间的距离。三个第一通孔118这样的位置设置符合冷却液的流动趋势，可使更多的冷却油流过第一通孔118。因此，通过上述的结构设计可以达到较好的淋油效果，从而实现对定子绕组44的良好冷却。
为了实现对定子绕组44的均匀的冷却，如图3所示，第一集油盘11整体 可以关于其圆弧中心线对称，也即是，第一集油盘11圆弧中心线两侧的第一集油格112的个数相同，且位置对应的两个第一集油格112上的第一通孔118也均关于该圆弧中心线对称。
可选地，如图3所示，第一集油盘11上可以形成六个第一集油格112，即第一集油盘11的盘身圆弧中心线两侧分别具有三个第一集油格112，从而利于每个半圆弧盘身上冷却油的积存和流动。
同样地，第二集油盘12可以具有如第一集油盘11类似的结构设计，因此下面仅对第二集油盘12的结构作简要的说明，其各个结构特征所带来的技术效果或者作用具体可参考第一集油盘11的对应特征，不再赘述。
为了实现对定子绕组44两端和两个端面更好的冷却，第二集油盘12宽度与定子绕组44的第二端超出定子铁芯45的部分的宽度相适应，例如两者的宽度可以相同，或者，两者的宽度差距较小，即第二集油盘12宽度可以略大于或者略小于定子绕组44的第二端超出定子铁芯45的部分的宽度。
如图4所示，第二集油盘12可以包括第二圆弧状盘身126、两个第二圆弧状侧边127和多个第二分隔筋121，两个第二圆弧状侧边127分别位于第二圆弧状盘身126的两侧且向远离定子绕组44的方向凸起，多个第二分隔筋121间隔均匀地连接在两个第二圆弧状侧边127之间，从而在第二圆弧状盘身126上形成多个第二集油格122。
为了对冷却油充分地引流，第二集油盘12的弧度可以为120度。
为了保证第二集油盘12的淋油效果，如图4所示，每个第二集油格122内可以设有三个第二通孔128，这三个第二通孔128的圆心可以构成一个等腰三角形，其中两个第二通孔128靠近所在集油格的下侧边缘。
为了对定子绕组44进行均匀的冷却，如图4所示，第二集油盘12整体可以关于其圆弧中心线对称。
再进一步地，如图4所示，第二圆弧状盘身126上可以形成六个第二集油格122，即第二集油盘12的圆弧中心线两侧分别具有三个第二集油格122。
这里需要说明的是，根据不同功能需求，定子绕组44两端超出定子铁芯45的部分的宽度可能会不同，因此第一集油盘11和第二集油盘12的宽度也不一定相同。而对于其它特征，比如集油格的数量、每个集油格内的通孔的数量及位置、集油盘盘身的弧度等可以相同，从而使冷却油通过喷油管的不同支路能 均匀地流淋到定子绕组44上，实现定子绕组44的均匀冷却。
第一集油盘11、第二集油盘12与定子绕组44的间距影响着冷却效果，若间距过大，会使冷却油的流动路径过长，进而使定子绕组44各个部分的冷却时差较大，导致定子绕组44的冷却不均匀；若间距过小，从喷油孔23喷射出的冷却油的冲击力会较大，易对定子绕组44铜线表面的绝缘层造成破坏。经过对比试验，本申请实施例中，第一集油盘11和第二集油盘12与相应的定子绕组44之间的间距可以均为1.6mm，从而可以比较好地避免上述问题。
为了更好地对第一集油盘11和第二集油盘12进行固定，可以先将第一集油盘11和第二集油盘12固定在一起，从而形成一个整体，然后再对第一集油盘11和第二集油盘12形成的整体进行固定。如图3所示，本申请实施例中，第一集油盘11邻近第二集油盘12的圆弧状侧边的两端可以分别设有竖立的第一凸耳113，且第一凸耳113上具有连接管114；如图4所示，第二集油盘12邻近第一集油盘11的圆弧状侧边的两端可以分别设有竖立的第二凸耳123，第二凸耳123与第一凸耳113相对，且第二凸耳123上具有连接柱124，连接柱124插接在连接管114内。在使用时，可以方便地将连接柱124插接在连接管114内，这里应当理解的是，当连接柱124和连接管114完成配合后，第一集油盘11和第二集油盘12之间的距离应与设定间距一致。
为了将第一集油盘11和第二集油盘12插接配合所形成的整体固定在预设位置上，如图3所示，本申请实施例中，第一集油盘11远离第二集油盘12的圆弧状侧边的两端可以分别具有插接柱115，插接柱115适于与变速箱壳体5上的孔过盈配合；如图4所示，第二集油盘12远离第一集油盘11的圆弧状侧边的中间可以形成定位部125，定位部125向远离定子绕组44的方向呈波浪状凸起，定位部125适于与变速箱壳体5的内壁接触。定位部125的端面呈波浪状，从而利于第二集油盘12的冷却油向外溢出，以对定子绕组44的端面进行冷却。
也即是第一集油盘11上的插接柱115与变速箱壳体5固定连接，第二集油盘12上的定位部125与变速箱壳体5的内壁相抵接触，从而可以将集油组件1整体固定在预设位置上。
需说明的是，本申请上述实施例提供的油冷电机冷却系统整体位于变速箱壳体5的内部，从而第一集油盘11和第二集油盘12可以固定到变速箱壳体5上。
由于从喷油管2喷射出的冷却油的流速和压力有所下降，对第一集油盘11和第二集油盘12的强度要求不如喷油管2的高，因此，本申请实施例中，第一集油盘11和第二集油盘12可以均为注塑件，并可以通过注塑成型工艺一体成型而成，从而可以减轻盘身的重量。且由于第一集油盘11和第二集油盘12下方的定子绕组44在工作时会产生很多的热量，因此，第一集油盘11和第二集油盘12可以选用耐高温材料制成。
为实现对电机更好的冷却，如图1所示，本申请提供的油冷电机冷却系统还可以包括导油管3，导油管3与电机4的转子轴41的内部连通，用于将冷却油注入转子轴41的内部。例如，导油管3可以与油泵M连接，并在转子轴41的轴向上对准转子轴41，并将油泵M提供的冷却油注入转子轴41的内部。
转子轴41的轴体两端分别设有第一甩油孔411和第二甩油孔412，第一甩油孔411对应于支撑转子轴41的第一轴承42，第二甩油孔412对应于支撑转子轴41的第二轴承43，其中，第一轴承42和第二轴承43分别靠近转子轴41的两端，也即是第一轴承42靠近转子轴41的第一端，第二轴承43靠近转子轴41的第二端，这样，第一甩油孔411可以将转子轴41内的冷却油甩至第一轴承42内侧，而第二甩油孔412可以将转子轴41内的冷却油甩至第二轴承43内侧。
这里需要说明的是，第一轴承42内侧指的是第一轴承42靠近转子轴41的一侧；第二轴承43内侧指的是第二轴承43靠近转子轴41的一侧。
当转子轴41在转动时，由导油管3注入的具有一定流速的冷却油会被甩起四溅，被甩起的冷却油通过第一甩油孔411和第二甩油孔412淋到第一轴承42和第二轴承43的内侧，从而对第一轴承42和第二轴承43进行冷却，且冷却油还可被第一轴承42和第二轴承43反弹到定子绕组44的内侧及转子铁芯46的两侧，从而对定子绕组44的内侧及转子铁芯46的两侧进行冷却。
为了利于转子轴41内的冷却油从甩油孔甩出去，如图1所示，本申请实施例中，第一甩油孔411和第二甩油孔412可以均为外端比内端更靠近转子轴41的端部的斜孔，也即是第一甩油孔411和第二甩油孔412的轴线分别对准第一轴承42和第二轴承43。
为了获得更好的甩油效果，如图1和图6所示，可以在转子轴41两端设置多个环绕转子轴41轴体分布的第一甩油孔411和第二甩油孔412，并使第一甩油孔411和第二甩油孔412的轴线分别对准第一轴承42和第二轴承43内侧的 中心位置。通过上述设定，既能利于冷却油向外甩出，又能准确地将冷却油导向转子轴两侧的第一轴承42和第二轴承43处，以实现预期的冷却效果。
可选地，第一甩油孔411和第二甩油孔412的个数可以为三个，通过在转子轴41轴体两端分别开设这样的三个甩油孔，可以使足量的冷却油喷射到第一轴承42和第二轴承43附近。
本申请实施例中，导油管3可以连接到变速箱壳体5，通过变速箱壳体5可以将导油管3固定在预设的位置上。
需要说明的是，变速箱壳体5上具有油道，从而油泵M提供的冷却油可以通过相应的油道输送至导油管3，本申请实施例对变速箱壳体5上的油道的具体结构不作限定。
本申请实施例的油冷电机冷却系统包括集油组件、喷油管、导油管和电机。其中，电机的转子轴上设有多个第一甩油孔和多个第二甩油孔，导油管用于将冷却油注入转子轴内部，从而当转子转动时，冷却油通过转子轴上的第一甩油孔和第二甩油孔，被甩溅到转子轴两侧轴承的内侧，再被反弹到电机的定子绕组内侧和转子铁芯上，从而实现了对定子绕组内侧、转子铁芯和轴承的冷却。喷油管上设有多个喷油孔，从而喷油管内的冷却油可以喷射到集油组件上。集油组件包括呈圆弧状且开设有多个通孔的第一集油盘和第二集油盘，集油盘里的冷却油通过通孔滴淋在定子绕组和定子铁芯上，从而实现了对定子绕组和定子铁芯的冷却。本申请实施例的冷却系统利用结构均较为简单的集油组件、喷油管和导油管，通过两条冷却油路径，实现了对定子绕组内侧和外侧、定子铁芯、转子铁芯，转子轴两侧以及轴承内侧的直接冷却，冷却范围广且冷却效果好。
下面结合图5对本申请实施例提供的油冷电机冷却系统的工作原理进行详细说明。
如图5所示，变速箱油箱内的冷却油通过油冷器N的降温或升温作用达到电机4预设的进油口温度后，被油泵M泵入变速箱的液压系统并通过变速箱壳体5上的油道分别输送至喷油管2和导油管3，也即本申请实施例提供的油冷电机冷却系统具有两个油冷路径：
第一油冷路径，具有一定流速的冷却油经导油管3喷射到转子轴41内，转 动的转子轴41使内部的冷却油甩起四溅，被甩起的冷却油通过第一甩油孔411和第二甩油孔412甩淋到第一轴承42和第二轴承43的内侧，从而对第一轴承42、第二轴承43进行冷却，且冷却油还会被第一轴承42和第二轴承43反弹到定子绕组44的内侧及转子铁芯46的两侧，从而对定子绕组44的内侧及转子铁芯46的两侧进行冷却。
第二油冷路径，流入喷油管2内的冷却油，具有两条流动子路径：一部分冷却油流入直管21内，由于直管21横跨在第一集油盘11、定子铁芯45和第二集油盘12的上方，因而这部分冷却油在流动时，当冷却油流经直管21的始端部分时，冷却油可以通过直管21上对应的喷油孔23喷射到第一集油盘11的一侧半圆弧盘身上，进而这部分冷却油可以通过盘身上的通孔淋流到位于该侧半圆弧盘身下方的定子绕组44上，从而对定子绕组44的这一端进行冷却。当冷却油流经直管21的中间部分时，冷却油通过直管21上对应的喷油孔23直接喷射到定子铁芯45上，从而对其进行冷却。当冷却油流经直管21的末端部分时，冷却油通过直管21上对应的喷油孔23喷射到第二集油盘12的一侧半圆弧盘身上，进而这部分冷却油通过盘身上的通孔淋流到位于该半个盘身下方的定子绕组44上，从而对定子绕组44的这一端进行冷却。
另一部分冷却油流入弯折管22内，由于弯折管22的第一管体221也横跨在第一集油盘11、定子铁芯45和第二集油盘12的上方，因而这部分冷却油在流动时，当冷却油流经弯折管22的第一管体221的始端部分时，冷却油通过管体上对应的喷油孔23喷射到第一集油盘11的另一侧半圆弧盘身上，进而这部分冷却油可以通过盘身上的通孔淋流到位于该侧半圆弧盘身下方的定子绕组44上，从而对定子绕组44的这一端进行冷却。当冷却油流经弯折管22的第一管体221的中间部分时，冷却油可以通过管体上对应的喷油孔23直接喷射到定子铁芯45上，从而对其进行冷却。当冷却油流经弯折管22的第一管体221的末端部分时，冷却油可以通过管体上对应的喷油孔23喷射到第二集油盘12的另一侧半圆弧盘身上，进而这部分冷却油可以通过盘身上的通孔淋流到位于该侧半圆弧盘身下方的定子绕组44上，从而对定子绕组44的这一端进行冷却。
可见，利用该油冷电机冷却系统实现对定子绕组外侧和内侧、转子铁芯及轴承的直接冷却，冷却范围广且冷却效果较好。
本申请实施例提供的油冷电机冷却系统利用集油组件、喷油管和导油管，通过两条油冷路径实现了对定子绕组内侧和外侧、定子铁芯、转子以及转子轴两侧轴承内侧的冷却，冷却范围广。两个油冷路径均是将冷却油直接淋流到电机的相应组件上，因而可以及时地对电机进行冷却，冷却效果较好，避免了热量长时间堆积而使电机的效率降低，甚至影响电机寿命。同时达到相同的冷却效果所需要的冷却油的用量较少，且所需冷却油的进口温度也不需要很低，从而减轻了油冷器的负荷。
现有水冷方式所采用的水套体积较大且比较重，增加了变速箱整体的重量和成本。而本申请实施例提供的油冷电机冷却系统的集油组件、喷油管和导油管，结构均较为简单，体积较小，质量也相对较轻，从而不会增加变速箱整体的重量。
此外，水套一般都需要和定子铁芯进行过盈压装配合，过盈配合难度较大且容易加热不均，导致定子铁芯的变形不一致，影响电机产生的磁场，进而影响电机性能的正常发挥。而本申请实施例提供的集油组件、喷油管和导油管通过变速箱壳体进行固定，不会对电机造成不利影响。
本申请实施例还提供一种车辆，该车辆包括上述的油冷电机冷却系统。通过配置上述油冷电机冷却系统可以有效对电机进行冷却，从而可以提高电机的工作效率，进而提升车辆性能。
在本申请中，应该理解到，术语“第一”和“第二”等仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。术语“多个”指两个或两个以上，除非另有明确的限定。
以上所述仅是为了便于本领域的技术人员理解本申请的技术方案，并不用以限制本申请。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围。

Claims (15)

  1. 一种油冷电机冷却系统，其中，所述系统包括电机(4)、集油组件(1)和喷油管(2)；
    所述喷油管(2)位于所述集油组件(1)的上方，且设置有开口朝向所述集油组件(1)的多个喷油孔(23)，所述喷油管(2)用于通过所述多个喷油孔(23)向所述集油组件(1)喷射冷却油；
    所述集油组件(1)包括第一集油盘(11)和第二集油盘(12)，所述第一集油盘(11)和所述第二集油盘(12)分别位于所述电机(4)的定子绕组(44)第一端和第二端的上方，所述第一集油盘(11)和所述第二集油盘(12)中的每个均为与所述定子绕组(44)的形状适配的圆弧状，且所述第一集油盘(11)上开设有多个第一通孔(118)，所述第二集油盘(12)上开设有多个第二通孔(128)，所述集油组件(1)用于通过所述第一通孔(118)和所述第二通孔(128)，使从所述喷油管(2)喷射出的冷却油流到所述定子绕组(44)上。
  2. 根据权利要求1所述的油冷电机冷却系统，其中，所述喷油管(2)包括直管(21)和弯折管(22)；
    所述直管(21)的第一端为封闭，第二端为敞口，所述直管(21)上设有多个所述喷油孔(23)，所述直管(21)与所述电机(4)的轴线平行设置；
    所述弯折管(22)包括彼此相连的第一管体(221)和第二管体(222)，所述第一管体(221)与所述直管(21)平行，所述第二管体(222)远离所述第一管体(221)的一端与所述直管(21)的管体连接，所述第一管体(221)上设有多个所述喷油孔(23)，所述第一管体(221)远离所述第二管体(222)的一端为封闭。
  3. 根据权利要求1所述的油冷电机冷却系统，其中，所述喷油管(2)为不锈钢材质。
  4. 根据权利要求1所述的油冷电机冷却系统，其中，所述第一集油盘(11)的宽度与所述定子绕组(44)的第一端超出所述定子铁芯(45)的部分的宽度 相适应，所述第二集油盘(12)的宽度与所述定子绕组(44)的第二端超出所述定子铁芯(45)的部分的宽度相适应。
  5. 根据权利要求1所述的油冷电机冷却系统，其中，
    所述第一集油盘(11)包括第一圆弧状盘身(116)、两个第一圆弧状侧边(117)和多个第一分隔筋(111)，所述两个第一圆弧状侧边(117)分别位于所述第一圆弧状盘身(116)的两侧且向远离所述定子绕组(44)的方向凸起，所述多个第一分隔筋(111)间隔均匀地连接在所述两个第一圆弧状侧边(117)之间，从而在所述第一圆弧状盘身(116)上形成多个第一集油格(112)，每个所述第一集油格(112)上设有多个所述第一通孔(118)；
    所述第二集油盘(12)包括第二圆弧状盘身(126)、两个第二圆弧状侧边(127)和多个第二分隔筋(121)，所述两个第二圆弧状侧边(127)分别位于所述第二圆弧状盘身的两侧且向远离所述定子绕组(44)的方向凸起，所述多个第二分隔筋(121)间隔均匀地连接在所述两个第二圆弧状侧边(127)之间，从而在所述第二圆弧状盘身(126)上形成多个第二集油格(122)，每个所述第二集油格(122)上设有多个所述第二通孔(128)。
  6. 根据权利要求1所述的油冷电机冷却系统，其中，所述第一集油盘(11)和所述第二集油盘(12)的弧度均为120度。
  7. 根据权利要求5所述的油冷电机冷却系统，其特征在于，
    每个所述第一集油格(112)内设有三个所述第一通孔(118)，所述三个第一通孔(118)的圆心构成一个等腰三角形，其中两个所述第一通孔(118)靠近所在集油格的下侧边缘；
    每个所述第二集油格(122)内设有三个所述第二通孔(128)，所述三个第二通孔(128)的圆心构成一个等腰三角形，其中两个所述第二通孔(128)靠近所在集油格的下侧边缘。
  8. 根据权利要求5所述的油冷电机冷却系统，其中，所述第一集油盘(11)和所述第二集油盘(12)均关于各自的圆弧中心线对称。
  9. 根据权利要求5所述的油冷电机冷却系统，其中，
    所述第一集油盘(11)邻近所述第二集油盘(12)的圆弧状侧边的两端分别设有竖立的第一凸耳(113)，所述第一凸耳(113)具有连接管(114)；
    所述第二集油盘(12)邻近所述第一集油盘(11)的圆弧状侧边的两端分别设有竖立的第二凸耳(123)，所述第二凸耳(123)与所述第一凸耳(113)相对，所述第二凸耳(123)具有连接柱(124)，所述连接柱(124)插接在所述连接管(114)内。
  10. 根据权利要求9所述的油冷电机冷却系统，其中，所述第一集油盘(11)远离所述第二集油盘(12)的圆弧状侧边的两端分别具有插接柱(115)，所述插接柱(115)适于与变速箱壳体(5)上的孔过盈配合；
    所述第二集油盘(12)远离所述第一集油盘(11)的圆弧状侧边的中间形成定位部(125)，所述定位部(125)向远离所述定子绕组(44)的方向呈波浪状凸起，所述定位部(125)适于与所述变速箱壳体(5)的内壁接触。
  11. 根据权利要求1所述的油冷电机冷却系统，其中，所述第一集油盘(11)和所述第二集油盘(12)均为耐高温材料制成的注塑件。
  12. 根据权利要求1所述的油冷电机冷却系统，其中，所述系统还包括导油管(3)；
    所述导油管(3)与所述电机(4)的转子轴(41)的内部连通，用于将冷却油注入所述转子轴(41)的内部；
    所述电机的转子轴(41)的轴体两端分别设有第一甩油孔(411)和第二甩油孔(412)，所述第一甩油孔(411)用于将所述转子轴(41)的内部的冷却油甩至支撑所述转子轴(41)的第一轴承(42)，所述第二甩油孔(412)用于将所述转子轴(41)的内部的冷却油甩至支撑所述转子轴(41)的第二轴承(43)，所述第一轴承(42)和所述第二轴承(43)分别靠近所述转子轴(41)的两端。
  13. 根据权利要求12所述的油冷电机冷却系统，其中，所述第一甩油孔(411) 的轴线对准所述第一轴承(42)，所述第二甩油孔(412)的轴线对准所述第二轴承(43)。
  14. 根据权利要求12所述的油冷电机冷却系统，其中，所述第一甩油孔(411)和所述第二甩油孔(412)均为多个，多个所述第一甩油孔(411)和多个所述第二甩油孔(412)分别环绕所述转子轴(41)的轴体分布。
  15. 一种车辆，所述车辆包括权利要求1-14任一项所述的油冷电机冷却系统。
PCT/CN2021/123354 2020-12-25 2021-10-12 油冷电机冷却系统及车辆 WO2022134746A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP21908747.5A EP4270733A4 (en) 2020-12-25 2021-10-12 OIL-COOLED ENGINE AND VEHICLE COOLING SYSTEM
US18/257,434 US20240258881A1 (en) 2020-12-25 2021-10-12 Oil-cooled motor cooling system, and vehicle

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202011562372.5A CN112701856B (zh) 2020-12-25 2020-12-25 油冷电机冷却系统
CN202011562372.5 2020-12-25

Publications (1)

Publication Number Publication Date
WO2022134746A1 true WO2022134746A1 (zh) 2022-06-30

Family

ID=75510570

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/123354 WO2022134746A1 (zh) 2020-12-25 2021-10-12 油冷电机冷却系统及车辆

Country Status (5)

Country Link
US (1) US20240258881A1 (zh)
EP (1) EP4270733A4 (zh)
CN (1) CN112701856B (zh)
CL (1) CL2023001886A1 (zh)
WO (1) WO2022134746A1 (zh)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112701856B (zh) * 2020-12-25 2022-04-29 奇瑞汽车股份有限公司 油冷电机冷却系统
CN113507187B (zh) * 2021-07-09 2023-03-07 南京航空航天大学 一种航空发电机油冷系统
CN114421712B (zh) * 2021-12-22 2023-08-01 浙江零跑科技股份有限公司 一种油冷电机定子端部绕组喷油冷却机构
CN114189095B (zh) * 2021-12-31 2023-06-30 广州小鹏汽车科技有限公司 电机及汽车
CN114598051B (zh) * 2022-03-02 2024-02-27 蔚来动力科技(合肥)有限公司 用于车辆的电机及车辆
CN115395733A (zh) * 2022-09-21 2022-11-25 重庆长安新能源汽车科技有限公司 一种驱动电机及新能源汽车
CN116394742A (zh) * 2022-12-16 2023-07-07 精进电动科技股份有限公司 一种电驱动总成的冷却润滑装置和电驱动总成

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106160277A (zh) * 2016-07-14 2016-11-23 中国第汽车股份有限公司 一种新型车用动力电机定子结构及其冷却系统
CN108336865A (zh) * 2018-03-30 2018-07-27 北京理工大学 一种液冷驱动电机
CN109194035A (zh) * 2018-09-04 2019-01-11 恒大法拉第未来智能汽车（广东）有限公司 具有油冷系统的电机
CN109936241A (zh) * 2019-03-27 2019-06-25 上海蔚来汽车有限公司 电机
EP3644480A1 (en) * 2017-06-19 2020-04-29 LG Electronics Inc. -1- Electric motor including oil spraying part
CN111564927A (zh) * 2020-05-18 2020-08-21 珠海格力电器股份有限公司 空心轴密封环、空心轴、转子结构、电机及电动汽车
CN211606273U (zh) * 2020-01-20 2020-09-29 上海蔚来汽车有限公司 油冷电机
CN112701856A (zh) * 2020-12-25 2021-04-23 奇瑞汽车股份有限公司 油冷电机冷却系统

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2116900A1 (en) * 1994-03-03 1995-09-04 Carlo C. Di Pietro Electric vehicle motor
JP5349281B2 (ja) * 2009-12-24 2013-11-20 株式会社日本自動車部品総合研究所 回転電機
JP5575055B2 (ja) * 2010-06-24 2014-08-20 株式会社日本自動車部品総合研究所 回転電機
US8970073B2 (en) * 2010-10-19 2015-03-03 Toyota Jidosha Kabushiki Kaisha Cooling structure for rotary electric machine
CN207559714U (zh) * 2017-12-15 2018-06-29 陕西华登电机制造有限公司 一种发电机电子绕组端部冷却装置
CN111503252B (zh) * 2020-04-03 2021-07-09 武汉理工大学 一种电动轮冷却系统及方法
CN111969791B (zh) * 2020-08-18 2021-12-03 中国第一汽车股份有限公司 一种油水混合冷却电机系统及车辆

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106160277A (zh) * 2016-07-14 2016-11-23 中国第汽车股份有限公司 一种新型车用动力电机定子结构及其冷却系统
EP3644480A1 (en) * 2017-06-19 2020-04-29 LG Electronics Inc. -1- Electric motor including oil spraying part
CN108336865A (zh) * 2018-03-30 2018-07-27 北京理工大学 一种液冷驱动电机
CN109194035A (zh) * 2018-09-04 2019-01-11 恒大法拉第未来智能汽车（广东）有限公司 具有油冷系统的电机
CN109936241A (zh) * 2019-03-27 2019-06-25 上海蔚来汽车有限公司 电机
CN211606273U (zh) * 2020-01-20 2020-09-29 上海蔚来汽车有限公司 油冷电机
CN111564927A (zh) * 2020-05-18 2020-08-21 珠海格力电器股份有限公司 空心轴密封环、空心轴、转子结构、电机及电动汽车
CN112701856A (zh) * 2020-12-25 2021-04-23 奇瑞汽车股份有限公司 油冷电机冷却系统

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4270733A4 *

Also Published As

Publication number Publication date
EP4270733A4 (en) 2024-06-26
CL2023001886A1 (es) 2023-12-15
CN112701856B (zh) 2022-04-29
EP4270733A1 (en) 2023-11-01
US20240258881A1 (en) 2024-08-01
CN112701856A (zh) 2021-04-23

Similar Documents

Publication Publication Date Title
WO2022134746A1 (zh) 油冷电机冷却系统及车辆
US20220329117A1 (en) Stator core cooling structure and motor cooling system
WO2022037263A1 (zh) 油水混合冷却电机系统及车辆
CN112234771B (zh) 一种牵引电动机的油冷冷却结构
WO2022156546A1 (zh) 一种油冷电机冷却系统
WO2021042465A1 (zh) 一种油水双冷的电驱动总成和新能源汽车
KR102303799B1 (ko) 모터
CN111756133A (zh) 电机冷却结构、电机、汽车
WO2019205694A1 (zh) 一种具有冷却水道的电机减速器集成壳体
CN105703541A (zh) 一种电机冷却系统
CN110868022A (zh) 一种油冷电机结构、主驱电机及电机冷却系统
CN212033944U (zh) 油冷机壳以及油冷电机
CN109462311A (zh) 一种冷却系统以及电机
CN211880192U (zh) 电机定子冷却装置、单电机和双电机
CN209659093U (zh) 一种冷却系统以及电机
CN109450174A (zh) 一种冷却系统以及电机
CN112751449B (zh) 一种油冷式车用永磁电机的冷却结构
CN221597517U (zh) 一种电机定子冷却结构及电机
CN219304638U (zh) 油冷电机的定子冷却回路及具有定子冷却回路的油冷电机
CN110429745A (zh) 油冷电机
CN217607617U (zh) 电机以及车辆
CN111756179A (zh) 电机和具有该电机的电动车辆
CN214755873U (zh) 内置油路结构的油冷电机
CN216788553U (zh) 一种摩托车风冷汽缸头
CN216981728U (zh) 一种半直驱风力发电机油冷结构

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21908747

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2021908747

Country of ref document: EP

Effective date: 20230725

WWE Wipo information: entry into national phase

Ref document number: 523441294

Country of ref document: SA

WWE Wipo information: entry into national phase

Ref document number: 523441294

Country of ref document: SA