CN111969791B - Oil-water mixed cooling motor system and vehicle - Google Patents
Oil-water mixed cooling motor system and vehicle Download PDFInfo
- Publication number
- CN111969791B CN111969791B CN202010833898.6A CN202010833898A CN111969791B CN 111969791 B CN111969791 B CN 111969791B CN 202010833898 A CN202010833898 A CN 202010833898A CN 111969791 B CN111969791 B CN 111969791B
- Authority
- CN
- China
- Prior art keywords
- oil
- rotor
- cooling
- flow passage
- rotor shaft
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
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
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- 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
Abstract
The invention relates to the technical field of driving assemblies and discloses an oil-water mixed cooling motor system and a vehicle. The motor system includes a housing, a stator, and a rotor. The first oil duct is arranged on the shell and extends to a position between the shell and the stator core; the oil injection piece is arranged on the inner side of the shell and positioned at the end part of the stator core, and cooling oil can be injected to the end winding at least through the oil injection hole; the water channel is arranged on the shell and is overlapped and staggered with at least part of the first oil channel; the oil guide piece is arranged on the rotor shaft and positioned at the end part of the rotor iron core; the second oil duct comprises an oil inlet flow passage on the rotor shaft, a magnetic steel cooling flow passage between the rotor iron core and the magnetic steel, an oil guide flow passage on the oil guide piece and a first oil throwing flow passage, the oil guide flow passage is communicated with the oil inlet flow passage and the magnetic steel cooling flow passage, and the cooling oil is at least thrown to the end winding through the first oil throwing flow passage. The vehicle includes an electric machine system. The invention simultaneously cools the stator core, the end winding and the magnetic steel, and cools the stator core and the end winding in a combined mode of water cooling and oil cooling, and the cooling effect is good.
Description
Technical Field
The invention relates to the technical field of driving assemblies, in particular to an oil-water mixed cooling motor system and a vehicle.
Background
With the rapid development of new energy vehicles, electric drive systems are also developed in the direction of high speed and high power, and the requirements on motor cooling systems are higher and higher.
Traditional water cooled machine is through cooling the casing and then to stator core cooling, and to the unable direct cooling of the serious stator winding tip that dispels the heat, the heat of winding can only cool off on to the casing through air conduction, and the cooling effect is relatively poor. The most part of the traditional oil-cooled motor is only cooled against the end part of a stator winding, and the stator core and rotor magnetic steel cannot be effectively cooled, and meanwhile, the traditional oil-cooled motor also needs to be additionally provided with a cooler to cool oil, so that the cost is high, and the occupied space is large.
Disclosure of Invention
The invention aims to provide an oil-water mixed cooling motor system and a vehicle, which can cool a stator core, a stator winding and rotor magnetic steel simultaneously, and have the advantages of good cooling effect, low cost and small occupied space.
In order to realize the purpose, the following technical scheme is provided:
in a first aspect, an oil-water mixture cooling motor system is provided, including:
a housing;
the stator is inserted into the inner side of the shell and comprises a stator iron core and an end winding;
the rotor is inserted into the inner side of the stator and comprises a rotor shaft, a rotor iron core embedded on the rotor shaft and a plurality of magnetic steels which are embedded in a plurality of parts in the rotor iron core and axially extend;
the first oil duct is arranged on the shell and extends to a position between the inner wall of the shell and the outer wall of the stator core;
the oil injection piece is arranged on the inner side of the shell and positioned at the end part of the stator core, an oil injection hole communicated with the first oil duct is formed in the oil injection piece, and cooling oil can be injected to the end winding at least through the oil injection hole;
the water channel is arranged on the shell and is overlapped and staggered with at least part of the first oil channel;
the oil guide piece is arranged on the rotor shaft and is positioned at the end part of the rotor iron core;
a second oil passage comprising:
the oil inlet flow passage is arranged on the rotor shaft;
the magnetic steel cooling runner is axially arranged between the rotor core and the magnetic steel in a penetrating manner;
the communicated oil guide flow passage and the first oil throwing flow passage are arranged on the oil guide piece, the oil guide flow passage communicates the oil inlet flow passage with the magnetic steel cooling flow passage, and cooling oil can be thrown to the end winding at least through the first oil throwing flow passage.
As a preferable scheme of the oil-water mixing cooling motor system, the first oil passages are distributed in the whole circumferential direction of the shell, and the area of the region, in which the water passage is formed, of the shell accounts for two thirds of the peripheral area of the shell.
As a preferable aspect of the oil-water mixture cooling motor system, the first oil passage includes:
the circumferential oil inlet flow passage is arranged in the middle of the shell in the axial direction;
the radial oil inlet channels are arranged at intervals along the circumferential direction of the shell, each radial oil inlet channel is communicated with the circumferential oil inlet channel, and each radial oil inlet channel comprises a first radial oil inlet groove formed in the shell and a second radial oil inlet groove formed in the outer wall of the stator core and corresponding to the first radial oil inlet groove;
the water channel is perpendicular to the radial oil inlet flow channel.
As a preferred scheme of the oil-water mixed cooling motor system, the oil guide member is a dynamic balance plate, the dynamic balance plate is embedded on the shell, and the dynamic balance plate is positioned at the end part of the rotor core; or the like, or, alternatively,
the oil guide piece is a rotor pressure ring, the rotor pressure ring is embedded on the shell, and the rotor pressure ring axially presses the rotor iron core onto the rotor shaft; or the like, or, alternatively,
the oil guide piece is a shaft shoulder on the rotor shaft, and the shaft shoulder and the rotor core are axially compressed.
As a preferable scheme of the oil-water mixed cooling motor system, the oil injection pieces are annular, and the two oil injection pieces are respectively arranged at two ends of the stator core.
As a preferable scheme of the oil-water mixed cooling motor system, the rotor shaft is coupled to the housing through a bearing, the housing is further provided with a second oil throwing flow passage communicated with the oil inlet flow passage, and the cooling oil can be at least sprayed to the bearing through the second oil throwing flow passage.
As a preferable scheme of the oil-water mixed cooling motor system, the rotor shaft is coupled to the housing through a bearing, a flow guide member is arranged on the rotor shaft, an oil guide inclined surface and/or an oil guide groove are/is arranged on the flow guide member, a cooling oil part sprayed to the end winding drops onto the flow guide member, and is guided to the bearing through the oil guide inclined surface and/or the oil guide groove.
As a preferred scheme of the oil-water mixed cooling motor system, the flow guide piece is a rotor compression ring embedded on the rotor shaft, and the rotor compression ring axially compresses the rotor iron core on the rotor shaft.
As a preferred scheme of the oil-water mixed cooling motor system, the rotor shaft is a hollow shaft, a conduit is nested in the rotor shaft, an inner cavity of the conduit is the oil inlet flow passage, and the outer diameter of the conduit is smaller than the inner diameter of the rotor shaft; or the like, or, alternatively,
the rotor shaft is a hollow shaft, the inner cavity of the rotor shaft is the oil inlet flow channel, the inner wall of the rotor shaft is provided with a drainage groove, and the spiral drainage groove extends along the axial direction of the rotor shaft.
In a second aspect, a vehicle is provided, comprising the oil-water mixture cooling motor system as described above.
The invention has the beneficial effects that:
in the oil-water mixed cooling motor system, the cooling oil in the shell and the first oil duct between the shell and the stator core cools the stator core, and meanwhile, the oil injection piece, the shell and the stator core form an end winding oil spraying system to cool the end winding. Water course and the range upon range of crisscross setting of at least partial first oil duct on the casing adopt the oil-water mixture cooling, carry out oil-cooling in the water-cooling, improve the cooling effect to stator core and end winding, and cool off the cooling oil through the cooling water, need not additionally to set up the cooler, reduce cost reduces whole motor system's occupation space. Furthermore, a second oil duct is arranged on the rotor, wherein cooling oil in an oil inlet flow passage of the rotor shaft enters a magnetic steel cooling flow passage on the rotor iron core under the guidance of the oil guide flow passage of the oil guide piece to cool the magnetic steel with oil, and meanwhile, part of the cooling oil is thrown to the end winding through a first oil throwing flow passage of the oil guide piece to further cool the end winding with oil. The oil-water mixed cooling motor system can cool the stator core, the end winding and the magnetic steel simultaneously, and cools the stator core and the end winding in a water cooling and oil cooling mode.
The vehicle provided by the invention comprises the oil-water mixed cooling motor system, the cooling effect is good, and the continuous power of the motor system is high.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
Fig. 1 is a cross-sectional view of an oil-water hybrid cooling motor system according to an embodiment of the present invention;
FIG. 2 is a schematic illustration of a portion of a first oil gallery in a housing provided in accordance with an embodiment of the present invention;
FIG. 3 is a schematic illustration of a waterway in a portion of a shell provided in accordance with an embodiment of the present invention;
FIG. 4 is a schematic illustration of a water gallery and a first oil gallery in a portion of the housing provided in accordance with an embodiment of the present invention;
fig. 5 is a side view of a stator core provided in an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of an oil injection member according to an embodiment of the present invention;
fig. 7 is a side view of a rotor core provided in an embodiment of the present invention;
FIG. 8 is a side view of a dynamic balancing plate provided by an embodiment of the present invention;
FIG. 9 is a first schematic structural view of a rotor shaft according to another embodiment of the present invention;
fig. 10 is a second schematic structural view of a rotor shaft according to another embodiment of the present invention.
Reference numerals:
1-a shell; 2-a stator; 3-a rotor; 4-oil injection piece; 5-dynamic balance plate; 6-rotor compression ring; 7-a bearing; 8-a catheter;
11-a first oil passage; 12-a water channel; 13-oil transportation duct; 131-an oil inlet; 14-a water inlet; 15-a water outlet;
111-circumferential oil inlet flow channel; 112-radial oil inlet flow passage;
1121-first radial oil intake groove;
121-a first flow channel; 122-a second flow channel; 123-intermediate flow channel;
1211 — first branch; 1212 — second branch; 1221-third branch; 1222-a fourth branch;
21-a stator core; 22-end windings;
211-a second radial oil inlet groove;
31-a rotor shaft; 32-rotor core; 33-magnetic steel;
311-oil inlet flow channel; 312-oil inlet hole; 313-shoulder; 314-a drainage groove; 315-a second oil slinging flow channel;
321-magnetic steel cooling flow channel; 322-magnetic steel reinforced cooling flow channel;
41-oil spray holes; 42-oil spray groove;
51-oil guide flow channel; 52-first oil slinger flow channel; 53-mounting holes;
511-radial slots; 512-circular ring groove;
61-oil guiding inclined plane.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, the present embodiment provides an oil-water mixture cooling motor system, which includes a housing 1, and a stator 2 and a rotor 3 disposed in the housing 1. The stator 2 is fixedly inserted into the inner cavity of the shell 1, and the rotor 3 is rotatably inserted into the inner ring of the stator 2.
The stator 2 includes a stator core 21 and an end winding 22. The stator core 21 is substantially annular, and the end winding 22 is wound around the inner circumferential surface thereof. The rotor 3 includes a rotor shaft 31, a rotor core 32, and a plurality of magnetic steels 33. The rotor shaft 31 is rotatably supported on the housing 1 by a bearing 7. The rotor core 32 is fitted to the rotor shaft 31 and is integrally rotatable with the rotor shaft 31. The outer peripheral surface of the rotor core 32 and the inner peripheral surface of the stator core 21 face each other with a predetermined gap. The rotor core 32 is formed by stacking a plurality of rotor 3 laminations in the axial direction. Each rotor 3 is formed in a disc shape. A magnet hole for embedding the magnetic steel 33 is formed inside the rotor core 32. The magnet holes are distributed at one end of the rotor core 32 in the radial direction away from the center, and each magnet hole axially penetrates through the rotor core 32 in the axial direction.
The housing 1 is provided with a first oil passage 11 and a water passage 12 for cooling the stator core 21 and the end winding 22. The first oil passage 11 extends between the inner wall of the housing 1 and the outer wall of the stator core 21. The cooling oil is injected into the housing 1 and flows between the housing 1 and the stator core 21 along the first oil passage 11 to oil-cool the stator core 21. The oil injection piece 4, the shell 1 and the stator core 21 form an end winding 22 oil spraying system.
The inner side of the shell 1 is also inserted with an oil injection piece 4, and the oil injection piece 4 is positioned at the end part of the stator iron core 21. The oil injection piece 4 is provided with an oil injection hole 41 communicated with the first oil passage 11. The cooling oil flowing along the first oil passage 11 to between the inner wall of the housing 1 and the outer wall of the stator core 21 can be injected at least to the end winding 22 by the oil injection hole 41 of the oil injection piece 4 under the action of the oil pressure to simultaneously oil-cool the end winding 22.
The water passage 12 of the housing 1 of the present embodiment is stacked and staggered with at least a portion of the first oil passage 11. Adopt the water oil mixing cooling, carry out oil-cooling when water-cooling, effectively cool off stator core 21 and end winding 22, the temperature that avoids cooling oil behind the cooling stator core 21 risees and then is not enough to end winding 22 cooling, improves the cooling capacity of motor, simultaneously, cools off cooling oil through the cooling water, need not additionally to set up the cooler, and reduce cost reduces whole motor system's occupation space.
The first oil passage 11 is distributed over the entire circumference of the housing 1 to uniformly cool the stator core 21. Due to the lamination of the water passage 12 and the first oil passage 11, an increase in the local thickness of the housing 1 is inevitable. Optionally, the area of the region of the casing 1 where the water channel 12 is opened accounts for two thirds of the peripheral area of the casing 1, and the thickness and weight of the casing 1 are both considered, so that the casing 1 is prevented from being too thick and heavy while the cooling effect of the stator core 21 and the end winding 22 is ensured. Of course, in other embodiments, the size of the area of the region where the first oil passage 11 and the water passage 12 are provided and the overlapping area of the water passage 12 and the first oil passage 11 may be adjusted according to the motor power and the like. Alternatively, the region where the water passage 12 is provided may include a plurality of regions arranged at intervals in the circumferential direction of the casing 1 to uniformly cool the cooling oil over the entire casing 1.
In the present embodiment, referring to fig. 2, the first oil passage 11 includes a circumferential oil inlet flow passage 111 and a plurality of radial oil inlet flow passages 112. The circumferential oil inlet flow passage 111 is preferably provided in the middle of the housing 1 in the axial direction. A plurality of radial oil inlet flow passages 112 are provided at intervals along the circumferential direction of the casing 1, and each radial oil inlet flow passage 112 is communicated with the circumferential oil inlet flow passage 111. The cooling oil enters the circumferential oil inlet flow channel 111 from the oil inlet 131 of the oil delivery duct 13 on the housing 1, and flows to the whole circumferential direction of the housing 1 along the circumferential oil inlet flow channel 111, and the cooling oil in the circumferential oil inlet flow channel 111 is distributed to each radial oil inlet flow channel 112. Each of the radial oil inlet flow passages 112 includes a first radial oil inlet groove 1121 provided in the housing 1 and a second radial oil inlet groove 211 provided in the outer wall of the stator core 21 and corresponding to the first radial oil inlet groove 1121 (see fig. 5).
For example, referring to fig. 3 and 4, the water channel 12 is perpendicular to the radial oil inlet flow channel 112, so that the heat exchange efficiency of the cooling water and the cooling oil is improved. The waterway 12 includes a first flow passage 121 and a second flow passage 122 which are communicated with each other, and the first flow passage 121 is located upstream of the second flow passage 122 and is communicated with each other through an intermediate flow passage 123. The first flow channel 121 includes a first branch 1211 and a second branch 1212 connected to each other. The first branch 1211 and the second branch 1212 both extend in the circumferential direction of the housing 1 and are arranged side by side in the axial direction of the housing 1, the flow directions of the first branch 1211 and the second branch 1212 are opposite, and the first branch 1211 is located upstream of the second branch 1212. Similarly, the second flow passage 122 includes a third branch 1221 and a fourth branch 1222 that communicate. The third branch 1221 and the fourth branch 1222 extend in the circumferential direction of the housing 1, and are arranged side by side in the axial direction of the housing 1, the flow directions of the third branch 1221 and the fourth branch 1222 are opposite, and the third branch 1221 is located upstream of the fourth branch 1222.
The cooling water in the water storage device (not shown) flows into the first branch 1211 through the water inlet 14 of the first branch 1211, flows into the second branch 1212 through the first branch 1211, flows into the third branch 1221 through the middle flow channel 123, flows into the fourth branch 1222, and flows back to the water storage device through the water outlet 15 of the fourth branch 1222. After the cooling water in the water storage device is cooled, the cooling water flows into the water channel 12 again, and circulates in this way to continuously cool the cooling oil in the first oil channel 11.
In other embodiments, the arrangement shape of the first oil passage 11 and the water passage 12 and the overlapping area of the two may be adjusted according to factors such as the power and the operating state of the motor, so as to adjust the heat exchange efficiency of the cooling water and the cooling oil, which is not limited herein. For example, the first oil passage 11 and/or the water passage 12 may be provided in a shape that extends spirally in the circumferential direction of the casing 1.
The water passage 12 of the present embodiment is provided on a side of the first oil passage 11 away from the rotor core 32, and the cooling water cools the cooling oil, which further cools the rotor core 32 and the end winding 22. Of course, in other embodiments, the water passage 12 may be provided on the side of the first oil passage 11 close to the rotor core 32, or the water passage 12 may be provided on both the inner side and the outer side of the first oil passage 11.
It should be noted that, for clarity of the respective structures of the water passage 12 and the first oil passage 11, the housing 1 provided with the water passage 12 and the housing 1 provided with the first oil passage 11 are shown in a split structure in fig. 2 to 4, but in practice, the entire housing 1 may be an integral structure. For example, the first oil passage 11 and the water passage 12 may be integrally cast with the housing 1.
Illustratively, referring to fig. 6, the oil injection member 4 is ring-shaped, and the oil injection member 4 is inserted into the inside of the housing 1. Two oil injection pieces 4 are respectively arranged at two ends of the stator core 21, and the axial direction of the oil injection pieces 4 is vertical to the axial direction of the stator core 21 and the axial direction of the shell 1. An oil spraying groove 42 is formed in the oil spraying part 4, and the oil spraying groove 42 is communicated with the first oil channel 11 between the inner wall of the shell 1 and the outer wall of the stator core 21. The end face of the oil injection piece 4 is in sealing fit with the end face of the stator core 21. The oil injection piece 4, the shell 1 and the stator core 21 form a sealed oil injection cavity, an oil injection hole 41 in the oil injection piece 4 is communicated with the oil injection cavity, and the cooling oil in the first flow passage 121 is injected to the end winding 22 through the oil injection hole 41.
In the present embodiment, the oil spout groove 42 extends in the circumferential direction of the annular oil spout member 4, and the oil spout groove 42 extends approximately two thirds of the circumferential direction of the oil spout member 4. In other embodiments, the oil spray groove 42 may also be provided to extend along the entire circumference of the annular oil spray member 4, so that the oil spray groove 42 communicates with each of the radial oil inlet flow passages 112. A plurality of oil spray holes 41 are preferably provided at intervals in the circumferential direction of the oil spray member 4 to ensure uniform injection of the cooling oil throughout the end winding 22. Alternatively, a plurality of oil jet holes 41 are provided at intervals along the extending direction of the oil jet 4 to form a row of oil jet holes 41. Multiple rows of oil spray holes 41 can be arranged along the axial direction of the oil spray piece 4, and the multiple rows of oil spray holes 41 can also be arranged along the extending direction of the oil spray piece 3 in a staggered mode so as to improve the uniformity of cooling oil spraying. The shape of the oil jet hole 41 may be a cylindrical shape, a conical shape, or the like, and is not limited herein.
Further, referring to fig. 1 and 8, the rotor 3 is provided with a second oil passage for cooling the magnetic steel 33 and the end winding 22. The second oil passage includes an oil inlet flow passage 311, a magnetic steel cooling flow passage 321, an oil guide flow passage 51, and a first oil slinging flow passage 52.
Specifically, referring to fig. 1, an oil inlet flow passage 311 opens on the rotor shaft 31. Illustratively, the rotor shaft 31 is a hollow shaft, and its inner cavity is the oil inlet flow passage 311. Meanwhile, the rotor shaft 31 is provided with an oil inlet 312 penetrating through the rotor shaft 31 in the thickness direction. The oil inlet hole 312 is a part of the oil inlet flow passage 311.
With continued reference to fig. 1, an oil guide is further provided on the rotor shaft 31, and the oil guide is located at an axial end of the rotor core 32. The oil guide channel 51 and the first oil slinger channel 52 which are communicated are both arranged on the oil guide piece. The oil guide passage 51 of the oil guide communicates with one end of the oil inlet hole 312 away from the center of the rotor shaft 31. The oil guide members are optionally provided in two numbers, and the two oil guide members are respectively provided at both axial ends of the rotor core 32. Correspondingly, two oil inlet holes 312 are also provided, which are respectively communicated with the oil guide flow passages 51 on the two oil guide members. Alternatively, the oil guide passage 51 is an oil guide groove opened on the oil guide. The first oil slinger flow passage 52 is communicated with the oil guide flow passage 51 and penetrates through the oil guide member.
Referring to fig. 1 and fig. 7, the magnetic steel cooling flow passage 321 is opened on the rotor core 32 and located at a connection position between the rotor core 32 and the magnetic steel 33, that is, a surface of a part of the magnetic steel 33 is exposed to the magnetic steel cooling flow passage 321. The magnetic steel cooling flow passage 321 axially penetrates the rotor core 32. The oil guide flow passage 51 communicates the oil inlet flow passage 311 with the magnetic steel cooling flow passage 321.
The cooling oil in the oil storage device is pumped to the oil inlet flow passage 311, and enters the oil guide flow passage 51 of the oil guide member through the oil inlet hole 312 of the oil inlet flow passage 311. Part of the cooling oil in the oil guide channel 51 enters the magnetic steel cooling channel 321 to cool the magnetic steel 33. Another part of the cooling oil in the oil guide passage 51 is thrown obliquely to the radial direction of the rotor core 32 by the rotating centrifugal force of the rotor 3, and reaches the end winding 22 of the stator 2 to oil-cool the end winding 22.
In this embodiment, referring to fig. 7, a magnetic steel reinforced cooling channel 322 is further disposed on the rotor core 32 to further oil-cool the magnetic steel 33. The magnetic steel reinforcing cooling channel 322 axially penetrates through the rotor core 32 and is disposed close to the magnetic steel 33. The cooling oil in the magnetic steel reinforcing cooling flow channel 322 cools the magnetic steel 33.
Optionally, the oil guiding flow passage 51 is disposed on the oil guiding member in a circular ring shape, so that the oil guiding flow passage 51 is communicated with all the magnetic steel cooling flow passages 321 and the magnetic steel reinforcing cooling flow passage 322.
Preferably, the first oil slinger flow passage 52 is disposed obliquely with respect to the axis of the rotor core 32, and the distance of the first oil slinger flow passage 52 from the axis of the rotor core 32 is greater as the distance from the end of the rotor core 32 increases, to guide the cooling oil to be slinged to the end winding 22 of the stator 2. Of course, in other embodiments, the first oil slinger flow passage 52 may have other shapes, and is not limited herein. The number of the first oil slinger flow passages 52 is also not limited.
In the present embodiment, referring to fig. 1 and 8, the oil guide is a dynamic balance plate 5. The dynamic balance plate 5 is provided with a mounting hole 53, and the dynamic balance plate 5 is embedded in the housing 1 through the mounting hole 53 and is located at an end of the rotor core 32 to dynamically balance the rotor 3, which is the prior art. The dynamic balance plate 5 is directly used as an oil guide piece, a new structure is not required to be additionally added, and the mass and the occupied space of the whole motor system are reduced. The dynamic balance plates 5 may be selectively provided in two, and the two dynamic balance plates 5 are respectively provided at both ends of the rotor core 32 in the axial direction. The oil guide passage 51 includes a plurality of radial grooves 511 and a circular groove 512 provided in the dynamic balance plate 5. One end of the radial groove 511 communicates with the mounting hole 53, and the cooling oil in the oil inlet hole 312 of the rotor shaft 31 flows into the annular groove 512 along the radial groove 511.
Further, a rotor compression ring 6 is fitted to the rotor shaft 31, and the rotor compression ring 6 axially presses the rotor core 32 and the two dynamic balance plates 5 against a shoulder 313 of the rotor shaft 31. Of course, in other embodiments, the rotor compression ring 6 may be bonded to the rotor core 32 without providing the dynamic balance plate 5, and in this case, the rotor compression ring 6 may be used as the oil guide. Alternatively, the dynamic balance plate 5 located at the rear end of the rotor shaft 31 may be omitted, and the rotor compression ring 6 may axially press the rotor core 32 and the dynamic balance plate 5 located at the front end of the rotor shaft 31 against the rotor shaft 31, in which case the rotor compression ring 6 and/or the dynamic balance plate 5 may be used as the oil guide.
In addition, the rotor shaft 31 of the present embodiment is provided with a shoulder 313 for positioning the dynamic balance plate 5. In other embodiments, the dynamic balance plate 5 may not be provided, and the shoulder 313 may be axially pressed against the rotor core 32, and the shoulder 313 may be directly used as an oil guide.
Of course, in other embodiments, the oil guiding member may also be another structure disposed on the rotor shaft 31, and is not limited herein.
Further, a second oil slinging flow passage 315 communicated with the oil inlet flow passage 311 is further formed in the rotor shaft 31, and cooling oil can be injected to at least the bearing 7 through the second oil slinging flow passage 315 to cool and lubricate the bearing 7. In this embodiment, the second oil slinger 315 is communicated with the inner cavity of the rotor shaft 31 and penetrates through the wall thickness of the rotor shaft 31. The second oil slinger flow passage 315 is provided at the rear end of the rotor shaft 31 near the bearing 7. The second oil slinger flow passage 315 is disposed obliquely with respect to the axis of the rotor shaft 31 to guide the cooling oil to be slinged to the bearing 7 as much as possible. The number and shape of the second slinger flow passages 315 are not limited.
Optionally, referring to fig. 1, a flow guiding member is disposed on the rotor shaft 31, and a flow guiding structure such as an oil guiding inclined plane 61 and/or an oil guiding groove is disposed on the flow guiding member. The cooling oil sprayed onto the end winding 22 by the oil spray hole 41 of the oil spray member 4 and the cooling oil thrown onto the end winding 22 by the first oil slinging flow channel 52 on the dynamic balance plate 5 partially drops onto the flow guide member and is guided to the bearing 7 through the oil guide inclined surface 61 and/or the oil guide groove to further oil cool and lubricate the bearing 7.
In this embodiment, the flow guiding member is a rotor compression ring 6, and the rotor compression ring 6 is provided with an oil guiding inclined surface 61. Of course, in other embodiments, the rotor compression ring 6 may further be provided with an oil guiding structure with an oil guiding groove. Obviously, the flow guide element may also be a dynamic balance plate 5 or other structures, and is not limited herein.
In order to reduce the weight of the rotor shaft 31 as much as possible, the inner cavity of the rotor shaft 31 is formed to be large. At this time, when the mechanical pump is used to pump the cooling oil in the oil storage device to the inner cavity of the rotor shaft 31, the oil inlet amount is insufficient at a low speed, the inner cavity of the rotor shaft 31 cannot be filled, and the cooling oil thrown to the bearing 7 by the second oil throwing flow passage 315 is insufficient, which affects the cooling and lubrication of the bearing 7. For this reason, referring to fig. 9, in other embodiments, the conduit 8 may be nested in the rotor shaft 31, the inner cavity of the conduit 8 is the oil inlet flow passage 311, and the outer diameter of the conduit 8 is smaller than the inner diameter of the rotor shaft 31, so as to ensure that the inner cavity of the conduit 8 can be effectively filled with cooling oil, thereby improving the cooling effect on the bearing 7. The conduit 8 is provided with a through hole to communicate the inner cavity of the conduit 8 with the oil guide passage 51 of the oil guide. Alternatively, referring to fig. 10, a drainage groove 314 may be provided in the inner wall of the rotor shaft 31, the drainage groove 314 having a spiral shape, and the spiral drainage groove 314 extends in the axial direction of the rotor shaft 31 to guide the cooling oil at the front end of the rotor shaft 31 to the rear end of the rotor shaft 31, thereby improving the filling capacity of the cooling oil. Of course, in other embodiments, drainage slots 314 can have other shapes, and are not limited herein.
In the oil-water mixture cooling motor system provided by this embodiment, the housing 1 is provided with the first oil passage 11 and the water passage 12 for cooling the stator core 21 and the end winding 22. The cooling oil in the first oil passage 11 on the housing 1 and the stator core 21 cools the stator core 21. The oil injection piece 4, the shell 1 and the stator core 21 form an end winding 22 oil spraying system to cool the end winding 22. Water course 12 and 11 range upon range of crisscross settings of at least partial first oil duct on the casing 1, adopt the oil-water mixture cooling, carry out oil-cooling in the water-cooling to effectively cool off stator core 21 and end winding 22, the temperature of the coolant oil of avoiding cooling behind stator core 21 risees and then is not enough to end winding 22 cooling, simultaneously, cools off the coolant oil through the cooling water, need not additionally to set up the cooler, reduce cost reduces whole motor system's occupation space. Further, the rotor 3 is provided with a second oil passage, wherein the cooling oil in the oil inlet flow passage 311 of the rotor shaft 31 enters the magnetic steel cooling flow passage 321 on the rotor core 32 under the guidance of the oil guide flow passage 51 of the oil guide member to cool the magnetic steel 33, and meanwhile, part of the cooling oil is thrown to the end winding 22 through the first oil throwing flow passage 52 of the oil guide member to further cool the end winding 22. In addition, a second oil slinging flow passage 315 communicated with the oil inlet flow passage 311 is further arranged on the housing 1, and the cooling oil in the oil inlet flow passage 311 is sprayed to the bearing 7 through the second oil slinging flow passage 315 to cool and lubricate the bearing 7. The oil-water mixing cooling motor system of this embodiment can cool off stator core 21, end winding 22, magnet steel 33 and bearing 7 simultaneously to cool off stator core 21 and end winding 22 through the cold mode of water-cooling oiling, the cooling effect is good, need not additionally to set up the cooler simultaneously, and reduce cost reduces whole motor system's occupation space.
The embodiment also provides a vehicle, including foretell oil-water mixture cooling motor system, the cooling effect is good, and motor system's continuous power is high.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (8)
1. The utility model provides an oil-water mixture cooling motor system which characterized in that includes:
a housing (1);
the stator (2) is inserted into the inner side of the shell (1), and the stator (2) comprises a stator iron core (21) and an end winding (22);
the rotor (3) is inserted into the inner side of the stator (2), and the rotor (3) comprises a rotor shaft (31), a rotor iron core (32) embedded on the rotor shaft (31) and a plurality of magnetic steels (33) which are embedded in a plurality of parts in the rotor iron core (32) and axially extend;
the first oil duct (11) is arranged on the shell (1) and extends between the inner wall of the shell (1) and the outer wall of the stator core (21);
the oil injection piece (4) is arranged on the inner side of the shell (1) and is positioned at the end part of the stator core (21), an oil injection hole (41) communicated with the first oil duct (11) is formed in the oil injection piece (4), and cooling oil can be injected to at least the end winding (22) through the oil injection hole (41);
the water channel (12) is arranged on the shell (1), and the water channel (12) and at least part of the first oil channel (11) are arranged in a stacked and staggered mode;
the oil guide piece is arranged on the rotor shaft (31) and is positioned at the end part of the rotor iron core (32);
a second oil passage comprising:
the oil inlet flow passage (311) is formed in the rotor shaft (31);
a magnetic steel cooling flow channel (321) axially perforated between the rotor core (32) and the magnetic steel (33);
the communicated oil guide flow passage (51) and the first oil throwing flow passage (52) are both arranged on the oil guide piece, the oil guide flow passage (51) communicates the oil inlet flow passage (311) with the magnetic steel cooling flow passage (321), and cooling oil can be thrown to the end winding (22) at least through the first oil throwing flow passage (52);
the first oil passage (11) includes:
the circumferential oil inlet flow passage (111) is arranged in the middle of the shell (1) in the axial direction;
the radial oil inlet flow channels (112) are arranged at intervals along the circumferential direction of the shell (1), each radial oil inlet flow channel (112) is communicated with the circumferential oil inlet flow channel (111), and each radial oil inlet flow channel (112) comprises a first radial oil inlet groove (1121) formed in the shell (1) and a second radial oil inlet groove (211) formed in the outer wall of the stator iron core (21) and corresponding to the first radial oil inlet groove (1121);
the water channel (12) is vertical to the radial oil inlet flow channel (112);
the oil injection pieces (4) are annular, and the two oil injection pieces (4) are respectively arranged at two ends of the stator core (21).
2. The oil-water mixture cooling motor system according to claim 1, wherein the first oil passage (11) is distributed in the entire circumferential direction of the housing (1), and an area of a region of the housing (1) where the water passage (12) is opened accounts for two thirds of an outer circumferential area of the housing (1).
3. The oil-water mixture cooling motor system according to claim 1,
the oil guide piece is a dynamic balance plate (5), the dynamic balance plate (5) is embedded on the shell (1), and the dynamic balance plate (5) is positioned at the end part of the rotor iron core (32); or the like, or, alternatively,
the oil guide piece is a rotor pressure ring (6), the rotor pressure ring (6) is embedded on the shell (1), and the rotor pressure ring (6) axially presses the rotor iron core (32) on the rotor shaft (31); or the like, or, alternatively,
the oil guide piece is a shaft shoulder (313) on the rotor shaft (31), and the shaft shoulder (313) and the rotor iron core (32) are axially compressed.
4. The oil-water mixing cooling motor system according to claim 1, wherein the rotor shaft (31) is coupled to the housing (1) through a bearing (7), the housing (1) is further provided with a second oil slinging flow passage (315) communicated with the oil inlet flow passage (311), and the cooling oil can be at least sprayed to the bearing (7) through the second oil slinging flow passage (315).
5. The oil-water mixture cooling motor system according to claim 1 or 4, wherein the rotor shaft (31) is coupled to the housing (1) through a bearing (7), a flow guide member is disposed on the rotor shaft (31), an oil guide inclined surface (61) and/or an oil guide groove is disposed on the flow guide member, and a portion of the cooling oil sprayed to the end winding (22) drops onto the flow guide member and is guided to the bearing (7) through the oil guide inclined surface (61) and/or the oil guide groove.
6. The oil-water mixture cooling motor system according to claim 5, wherein the flow guide member is a rotor pressing ring (6) embedded on the rotor shaft (31), and the rotor pressing ring (6) axially presses the rotor core (32) against the rotor shaft (31).
7. The oil-water mixed cooling motor system as claimed in claim 1, wherein the rotor shaft (31) is a hollow shaft, a conduit (8) is nested in the rotor shaft (31), an inner cavity of the conduit (8) is the oil inlet flow passage (311), and an outer diameter of the conduit (8) is smaller than an inner diameter of the rotor shaft (31); or the like, or, alternatively,
the rotor shaft (31) is a hollow shaft, the inner cavity of the rotor shaft (31) is the oil inlet flow passage (311), the inner wall of the rotor shaft (31) is provided with a drainage groove (314), and the spiral drainage groove (314) extends along the axial direction of the rotor shaft (31).
8. A vehicle characterized by comprising the oil-water mixture cooling electric machine system according to any one of claims 1 to 7.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010833898.6A CN111969791B (en) | 2020-08-18 | 2020-08-18 | Oil-water mixed cooling motor system and vehicle |
| PCT/CN2021/103018 WO2022037263A1 (en) | 2020-08-18 | 2021-06-29 | Oil-water combined cooling electric motor system, and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010833898.6A CN111969791B (en) | 2020-08-18 | 2020-08-18 | Oil-water mixed cooling motor system and vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111969791A CN111969791A (en) | 2020-11-20 |
| CN111969791B true CN111969791B (en) | 2021-12-03 |
Family
ID=73388375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010833898.6A Active CN111969791B (en) | 2020-08-18 | 2020-08-18 | Oil-water mixed cooling motor system and vehicle |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111969791B (en) |
| WO (1) | WO2022037263A1 (en) |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111756141B (en) * | 2020-07-06 | 2021-08-13 | 珠海格力电器股份有限公司 | Motor rotor cooling structure, motor and automobile |
| CN111969791B (en) * | 2020-08-18 | 2021-12-03 | 中国第一汽车股份有限公司 | Oil-water mixed cooling motor system and vehicle |
| CN114629297B (en) * | 2020-12-10 | 2023-11-17 | 宇通客车股份有限公司 | Liquid cooling motor |
| CN112701856B (en) * | 2020-12-25 | 2022-04-29 | 奇瑞汽车股份有限公司 | Oil-cooled motor cooling system |
| CN113206563A (en) * | 2021-04-21 | 2021-08-03 | 浙江零跑科技有限公司 | Oil cold-hot electric driving power rotor structure |
| CN113162300B (en) * | 2021-04-28 | 2023-04-14 | 中国第一汽车股份有限公司 | Motor cooling system, motor and vehicle |
| CN113364184A (en) * | 2021-05-07 | 2021-09-07 | 中国第一汽车股份有限公司 | Direct cooling system applied to high-speed permanent magnet motor rotor and winding |
| CN113300506A (en) * | 2021-05-28 | 2021-08-24 | 上海大学 | Slot wedge type in-slot liquid cooling motor |
| CN115566830A (en) * | 2021-06-30 | 2023-01-03 | 青岛海尔智能技术研发有限公司 | Compressor and motor thereof |
| CN113572289B (en) * | 2021-07-05 | 2022-05-31 | 合肥巨一动力系统有限公司 | Oil-cooling hollow rotating shaft structure |
| DE102021119990A1 (en) * | 2021-08-02 | 2023-02-02 | Bayerische Motoren Werke Aktiengesellschaft | Cooling fluid guiding device for an electrical machine, electrical machine and method for providing an electrical machine |
| DE102021125659A1 (en) * | 2021-10-04 | 2023-04-06 | Bayerische Motoren Werke Aktiengesellschaft | Cooling arrangements for an electromotive drive unit and its components |
| DE102021211273A1 (en) | 2021-10-06 | 2023-04-06 | Volkswagen Aktiengesellschaft | Balancing disc with relief channels |
| DE102022104357A1 (en) | 2022-02-24 | 2023-08-24 | Bayerische Motoren Werke Aktiengesellschaft | Flow element for cooling a stator |
| CN114552892A (en) * | 2022-03-01 | 2022-05-27 | 臻驱科技（上海）有限公司 | Oil-cooled driving motor and assembling method thereof |
| CN114530989A (en) * | 2022-03-01 | 2022-05-24 | 臻驱科技（上海）有限公司 | Oil-cooled driving motor and assembling method thereof |
| CN114598051B (en) * | 2022-03-02 | 2024-02-27 | 蔚来动力科技(合肥)有限公司 | Motor for vehicle and vehicle |
| CN114567102B (en) * | 2022-03-03 | 2023-07-11 | 苏州睿控电动有限公司 | Oil cooling motor rotor cooling structure |
| CN114759706B (en) * | 2022-03-17 | 2023-02-10 | 华为电动技术有限公司 | Rotor, motor and electric vehicle |
| CN114977620B (en) * | 2022-06-24 | 2023-08-29 | 金都电力江苏有限公司 | Generator for motor vehicle |
| CN115967208B (en) * | 2023-03-16 | 2023-05-12 | 四川宜宾力源电机有限公司 | New energy automobile mixes cooled motor |
| CN117318356A (en) * | 2023-11-30 | 2023-12-29 | 小米汽车科技有限公司 | Motor and vehicle |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101656445A (en) * | 2009-09-14 | 2010-02-24 | 精进电动科技（北京）有限公司 | System and method for cooling motors |
| WO2017211360A1 (en) * | 2016-06-09 | 2017-12-14 | Rainer Puls | Cooling housing for an electric motor |
| CN109038951A (en) * | 2018-07-24 | 2018-12-18 | 上海大郡动力控制技术有限公司 | The cooling structure of new-energy automobile electrical drive power assembly |
| CN109155558A (en) * | 2016-08-17 | 2019-01-04 | 宝马股份公司 | Motor and vehicle with the motor |
| CN109217541A (en) * | 2017-06-30 | 2019-01-15 | 奥迪股份公司 | motor and motor vehicle |
| CN109327113A (en) * | 2018-10-29 | 2019-02-12 | 深圳市泉胜新技术开发有限公司 | A kind of oil-cooled motor cooling device |
| CN109980825A (en) * | 2019-03-27 | 2019-07-05 | 东风汽车集团有限公司 | A kind of efficiently cooling oil-cooled motor |
| CN209184335U (en) * | 2018-12-24 | 2019-07-30 | 上海大郡动力控制技术有限公司 | The cold cooling structure of oil for rotor |
| KR102018230B1 (en) * | 2018-06-15 | 2019-09-04 | 엘지전자 주식회사 | Electric motor |
| WO2020013466A1 (en) * | 2018-07-11 | 2020-01-16 | 엘지전자 주식회사 | Motor |
| WO2020120603A1 (en) * | 2018-12-12 | 2020-06-18 | Thyssenkrupp Ag | Rotor device for an electric machine and electric machine |
| EP3687038A1 (en) * | 2019-01-25 | 2020-07-29 | LG Electronics Inc. | Electric motor |
| CN111509876A (en) * | 2020-05-27 | 2020-08-07 | 精进电动科技股份有限公司 | Stator core cooling structure and motor cooling system |
| CN111756133A (en) * | 2020-07-06 | 2020-10-09 | 珠海格力电器股份有限公司 | Motor cooling structure, motor, car |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008043133A (en) * | 2006-08-09 | 2008-02-21 | Hitachi Via Mechanics Ltd | Rocking actuator device and laser machining device |
| CN101227129B (en) * | 2007-10-08 | 2011-09-07 | 南阳防爆集团有限公司 | High-capacity non-salient pole nest plate type synchronous generator |
| JP6428434B2 (en) * | 2015-03-27 | 2018-11-28 | 株式会社豊田自動織機 | Compressor |
| CN106787452A (en) * | 2015-11-23 | 2017-05-31 | 南车株洲电力机车研究所有限公司 | A kind of oil-cooled motor |
| CN206712615U (en) * | 2017-04-25 | 2017-12-05 | 沈阳工程学院 | A kind of ultrahigh speed magneto sleeve rotor cooling structure |
| CN207426901U (en) * | 2017-10-30 | 2018-05-29 | 比亚迪股份有限公司 | Electronic assembly and with its bogie and monorail train |
| CN109756056A (en) * | 2017-11-07 | 2019-05-14 | 华为技术有限公司 | Motor, power assembly, power-equipment and motor cooling means |
| CN111511598B (en) * | 2017-12-18 | 2023-06-16 | 日本电产株式会社 | In-wheel motor |
| CN109510402A (en) * | 2019-01-18 | 2019-03-22 | 中国第汽车股份有限公司 | A kind of used in new energy vehicles oil-cooled motor system |
| KR102172262B1 (en) * | 2019-01-25 | 2020-10-30 | 엘지전자 주식회사 | Electric motor |
| CN211127444U (en) * | 2019-12-31 | 2020-07-28 | 中国第一汽车股份有限公司 | Integrated electric drive system |
| CN210431099U (en) * | 2020-02-04 | 2020-04-28 | 北京稳力科技有限公司 | Mixed cooling structure of motor |
| CN111497596A (en) * | 2020-04-14 | 2020-08-07 | 山东宏泰机械科技股份有限公司 | Double-motor driving device of electric automobile |
| CN111478521A (en) * | 2020-05-25 | 2020-07-31 | 精进电动科技股份有限公司 | Mixed cooling motor |
| CN111969791B (en) * | 2020-08-18 | 2021-12-03 | 中国第一汽车股份有限公司 | Oil-water mixed cooling motor system and vehicle |
-
2020
- 2020-08-18 CN CN202010833898.6A patent/CN111969791B/en active Active
-
2021
- 2021-06-29 WO PCT/CN2021/103018 patent/WO2022037263A1/en active Application Filing
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101656445A (en) * | 2009-09-14 | 2010-02-24 | 精进电动科技（北京）有限公司 | System and method for cooling motors |
| WO2017211360A1 (en) * | 2016-06-09 | 2017-12-14 | Rainer Puls | Cooling housing for an electric motor |
| CN109155558A (en) * | 2016-08-17 | 2019-01-04 | 宝马股份公司 | Motor and vehicle with the motor |
| CN109217541A (en) * | 2017-06-30 | 2019-01-15 | 奥迪股份公司 | motor and motor vehicle |
| KR102018230B1 (en) * | 2018-06-15 | 2019-09-04 | 엘지전자 주식회사 | Electric motor |
| WO2020013466A1 (en) * | 2018-07-11 | 2020-01-16 | 엘지전자 주식회사 | Motor |
| CN109038951A (en) * | 2018-07-24 | 2018-12-18 | 上海大郡动力控制技术有限公司 | The cooling structure of new-energy automobile electrical drive power assembly |
| CN109327113A (en) * | 2018-10-29 | 2019-02-12 | 深圳市泉胜新技术开发有限公司 | A kind of oil-cooled motor cooling device |
| WO2020120603A1 (en) * | 2018-12-12 | 2020-06-18 | Thyssenkrupp Ag | Rotor device for an electric machine and electric machine |
| CN209184335U (en) * | 2018-12-24 | 2019-07-30 | 上海大郡动力控制技术有限公司 | The cold cooling structure of oil for rotor |
| EP3687038A1 (en) * | 2019-01-25 | 2020-07-29 | LG Electronics Inc. | Electric motor |
| CN109980825A (en) * | 2019-03-27 | 2019-07-05 | 东风汽车集团有限公司 | A kind of efficiently cooling oil-cooled motor |
| CN111509876A (en) * | 2020-05-27 | 2020-08-07 | 精进电动科技股份有限公司 | Stator core cooling structure and motor cooling system |
| CN111756133A (en) * | 2020-07-06 | 2020-10-09 | 珠海格力电器股份有限公司 | Motor cooling structure, motor, car |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022037263A1 (en) | 2022-02-24 |
| CN111969791A (en) | 2020-11-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111969791B (en) | Oil-water mixed cooling motor system and vehicle | |
| KR101858441B1 (en) | Modes of cooling hybrid electric machines | |
| CN110138145B (en) | Water-cooling and oil-cooling combined permanent magnet synchronous motor | |
| CN102598479B (en) | Wind power generator having an internal coolant circuit | |
| CN112234771A (en) | Oil cooling structure of traction motor | |
| CN102379078B (en) | Driving arrangement | |
| CN110086296B (en) | High-efficiency oil-cooled permanent magnet synchronous motor | |
| CN101611526A (en) | Motor rotor and possess the compressor of this motor rotor | |
| CN113241880A (en) | Oil-cooled motor with built-in oil way structure | |
| CN114629297B (en) | Liquid cooling motor | |
| CN212367066U (en) | Double-cooling-channel motor | |
| CN216751437U (en) | Oil-cooled motor cooling system | |
| US11742721B2 (en) | Rotor cooling assembly and method for the interior of a permanent magnet motor | |
| EP4246775A1 (en) | Rotor, motor, and electric vehicle | |
| CN110868022A (en) | Oil-cooled motor structure, main drive motor and motor cooling system | |
| CN209896865U (en) | Efficient oil-cooled permanent magnet synchronous motor | |
| CN215009955U (en) | Motor cooling structure and motor | |
| US20230044524A1 (en) | Permanent magnet rotor for an axial flux motor | |
| CN217010557U (en) | Motor and vehicle | |
| CN220754513U (en) | Oil-cooled asynchronous motor | |
| WO2024087682A1 (en) | Efficient oil-cooled motor | |
| CN217935225U (en) | Oil injection cooling structure for core part of motor | |
| CN218276240U (en) | Oil-cooled motor | |
| CN214755873U (en) | Oil-cooled motor with built-in oil way structure | |
| WO2023243161A1 (en) | Rotating electrical machine and vehicle drive device equipped with same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |