CN115811179A - Oil circuit structure of motor - Google Patents
Oil circuit structure of motor Download PDFInfo
- Publication number
- CN115811179A CN115811179A CN202111076304.2A CN202111076304A CN115811179A CN 115811179 A CN115811179 A CN 115811179A CN 202111076304 A CN202111076304 A CN 202111076304A CN 115811179 A CN115811179 A CN 115811179A
- Authority
- CN
- China
- Prior art keywords
- oil
- cooling channel
- cooling
- hole
- rotating 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.)
- Pending
Links
- 239000003921 oil Substances 0.000 claims abstract description 430
- 238000001816 cooling Methods 0.000 claims abstract description 148
- 239000010705 motor oil Substances 0.000 claims abstract description 4
- 238000002347 injection Methods 0.000 claims description 23
- 239000007924 injection Substances 0.000 claims description 23
- 238000004804 winding Methods 0.000 claims description 22
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 9
- 238000005507 spraying Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Landscapes
- Motor Or Generator Cooling System (AREA)
Abstract
The invention belongs to the technical field of motor cooling, and particularly relates to a motor oil way structure which comprises an oil way I arranged on a shell and an oil cooling channel I arranged between the shell and a stator, wherein the oil cooling channel I is communicated with the oil way I; the invention can comprehensively cool heating parts in the motor, eliminate local hot spots, improve the temperature uniformity of the motor, effectively improve the cooling efficiency under the condition of not increasing the integral size of the motor and not influencing the rotation of the hollow rotating shaft, and ensure that the oil cooling structure is more reasonable as a whole.
Description
Technical Field
The invention belongs to the technical field of motor cooling, and particularly relates to a motor oil way structure.
Background
The new energy driving motor has higher and higher requirements on power density, and the space is more and more compact. The cooling of the driving system is always the main concern of design research personnel, and under the indexes of high power density and high torque density, the temperature rise of the motor is the most difficult link to overcome. The water cooling technology is a mainstream heat dissipation mode at present, but the heat source cannot be directly cooled, the heat at the winding can be transferred to the shell through the insulating layer in the slot and the motor stator and then is carried away by the water, the transfer path is long, the heat dissipation efficiency is low, and the fit tolerance among all the parts further influences the thermal resistance of the transfer path.
Publication No. CN109327113A provides an oil-cooled motor cooling device, and it is through respectively setting up an oil inlet on casing and pivot, and two oil inlets adopt parallelly connected mode to connect, if will satisfy the rotation work of pivot when the oil feed, then require height to required oil feed connection structure, lead to overall structure complicacy and the cost is also higher. In addition, in this patent, the rotor oil path flows only along the end face of the rotor, and the cooling of the rotor is not uniform, resulting in poor effect.
Disclosure of Invention
The invention aims to solve the technical problem of providing a motor oil way structure which is uniform and comprehensive in cooling, simple and reasonable in structure and does not influence the rotation of a rotor rotating shaft.
The invention comprises an oil way I arranged on a shell and an oil cooling channel I arranged between the shell and a stator, wherein the oil cooling channel I is communicated with the oil way I; the rotor structure is characterized by further comprising a hollow rotating shaft axially penetrating through the middle of the rotor and an oil way II arranged on the end cover, wherein the two ends of the oil way II are respectively communicated with the oil way I and the hollow rotating shaft, cooling holes penetrating through the two end faces of the rotor are formed in the rotor, a pressing plate is respectively tightly attached to the two end faces of the rotor, oil inlet grooves and oil throwing holes I are formed in the two pressing plates, the two ends of each cooling hole are respectively correspondingly communicated with the oil inlet grooves and the oil throwing holes I, and oil throwing holes II communicated with the oil inlet grooves are formed in the side wall of the hollow rotating shaft.
Furthermore, the first oil way is arranged along the axis direction of the shell, the second oil way is arranged along the radial direction of the end cover, a first connecting hole is formed in the side face of one end of the second oil way, and when the end cover is fixed on the shell, the first connecting hole is aligned with the end portion of the first oil way so as to communicate the first oil way with the second oil way.
Furthermore, an oil cooling channel I is arranged on the inner wall of the casing, more than two circles of oil cooling channels I are arranged around the inner wall of the casing, an oil guide groove I is further arranged on the inner wall of the casing, penetrates through the oil cooling channel located on the outermost side and extends to be communicated with the oil cooling channel located on the other outermost side, parallel channels are formed between the oil cooling channels I with the more than two circles of oil cooling channels I, the oil guide groove I is communicated with the oil way I through an oil guide hole, and the stator is attached to the inner wall of the casing to enable an oil cooling channel region to form an oil cooling channel I and an oil guide groove region to form an oil guiding channel I.
Further, the first oil cooling channel is annular.
Furthermore, two oil cooling channels II are arranged on the inner wall of the machine shell, the oil cooling channel I is located between the two oil cooling channels II and is communicated with the oil cooling channel I, two oil collecting rings are respectively arranged at two ends of the stator and are attached to the inner wall of the machine shell, so that the oil cooling channels II are formed in the areas of the oil cooling channels II, and oil spraying holes I facing the winding are formed in the oil collecting rings.
Furthermore, an oil guide groove II is arranged on the inner wall of the shell, one end of the oil guide groove II is connected with one oil cooling channel II, the other end of the oil guide groove II penetrates through the oil cooling channel I to be connected with the other oil cooling channel II, and the oil guide groove II and the oil guide groove I are located on the same cross section penetrating through the axis of the shell.
Furthermore, the oil guide device further comprises an oil guide pipe, one end of the oil guide pipe is connected with the second oil way, the other end of the oil guide pipe extends into the hollow rotating shaft, one end of the oil guide pipe, which extends into the hollow rotating shaft, is closed, and a second oil injection hole is radially formed in the side wall of the oil guide pipe.
Furthermore, the hollow rotating shaft is matched with two bearings which are respectively arranged on the shell and the end cover, the side wall of the oil circuit II is provided with a third oil injection hole, the third oil injection hole is arranged towards the bearing arranged on the end cover, the side wall of the hollow rotating shaft is provided with a third oil throwing hole, and the third oil throwing hole is arranged towards the bearing arranged on the shell.
Furthermore, the number of the cooling holes is even, the oil inlet grooves and the first oil slingers are arranged on the pressure plate in an annular array mode, and the oil inlet grooves and the first oil slingers are arranged in a staggered mode.
Furthermore, an oil outlet communicated with the cavity of the machine shell is formed in the machine shell, and the oil outlet and the oil inlet end of the first oil way are located on the same side of the machine shell.
The invention has the advantages that the oil liquid flows into the first oil way and then respectively flows into the first oil cooling channel and the second oil way, the oil liquid flowing into the first oil cooling channel is directly contacted with the surface of the stator to dissipate the heat of the surface of the stator, the oil liquid flowing into the second oil way enters the hollow rotating shaft and enters the oil inlet tank through the second oil throwing hole, then passes through the cooling hole to be sprayed out from the first oil throwing hole, the oil liquid sprayed out along the first oil throwing hole is thrown to the inner side of the winding under the centrifugal action of the rotation of the rotor, and the oil liquid flowing out of the second oil way can dissipate the heat of the hollow rotating shaft, the rotor and the winding, thereby comprehensively cooling all heating parts in the motor, eliminating local hot spots, improving the temperature uniformity of the motor and prolonging the service life of the motor. The oil is contacted with the stator, the hollow rotating shaft, the rotor and the winding, so that a heat transfer path and thermal resistance are reduced, the cooling efficiency is high, and the power density of the motor is improved. Meanwhile, oil entering along the oil way I can simultaneously meet the cooling requirements of the stator area and the rotor area, the cooling efficiency is effectively improved under the condition that the integral size of the motor is not increased and the rotation of the hollow rotating shaft is not influenced, and the integral oil cooling structure is more reasonable.
Drawings
Fig. 1 is a left side view of the present invention.
FIG. 2 isbase:Sub>A cross-sectional view A-A of FIG. 1 according to the present invention.
Fig. 3 is a schematic view of the oil flow path of fig. 2.
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 1 in accordance with the present invention.
Fig. 5 is a schematic view of a first perspective structure of a first embodiment of the chassis according to the present invention.
Fig. 6 is a schematic diagram of a second perspective structure of a first embodiment of the chassis according to the present invention.
Fig. 7 is a schematic view of a first viewing angle structure of a second embodiment of the chassis of the present invention.
Fig. 8 is a second perspective view of the second embodiment of the housing of the present invention.
Fig. 9 is a schematic structural view of the end cap of the present invention.
FIG. 10 is a schematic view of the structure of the hollow shaft of the present invention.
FIG. 11 is a schematic view of the structure of the pressing plate of the present invention.
Fig. 12 is a schematic view of the structure of the rotor of the present invention.
Fig. 13 is a schematic structural view of an oil collecting ring in the present invention.
In the figure, 1-housing; 11-oil path one; 12-oil guide holes; 13-oil cooling channel one; 14-oil guide groove I; 15-oil guide groove II; 16-an oil cooling channel II; 17-an oil outlet; 2-end cover; 21-oil path two; 22-oil spray hole III; 23-connecting hole one; 24-connecting hole II; 3-a stator; 4-a rotor; 41-cooling holes; 5-a hollow rotating shaft; 51-oil throwing hole II; 52-oil throwing hole III; 6, pressing a plate; 61-an oil inlet tank; 62-oil throwing hole I; 7-oil guide pipe; 71-oil spray hole two; 8-winding; 9-oil collecting ring; 91-oil spray hole I; 10-bearing.
Detailed Description
As shown in fig. 1 to 13, the present invention includes a first oil passage 11 disposed on the casing 1 and a first oil cooling passage disposed between the casing 1 and the stator 3, and the first oil cooling passage is communicated with the first oil passage 11. The invention also comprises a hollow rotating shaft 5 axially penetrating through the middle part of the rotor 4 and an oil way II 21 arranged on the end cover 2, wherein the hollow rotating shaft 5 is the rotating shaft of the rotor 4, and is specifically a rotating shaft provided with a blind hole. The two ends of the oil path two 21 are directly or indirectly communicated with the oil path one 11 and the hollow rotating shaft 5 respectively, the rotor 4 is provided with cooling holes 41, the cooling holes 41 penetrate through two end faces of the rotor 4, two pressing plates 6 are respectively arranged on two end faces of the rotor 4, the two pressing plates 6 are respectively attached to the two end faces of the rotor 4, the pressing plates 6 rotate along with the rotor 4, oil inlet grooves 61 and oil throwing holes one 62 are formed in the two pressing plates 6, the oil inlet grooves 61 are formed in one face, attached to the rotor 4, of the pressing plates 6, one end of each cooling hole 41 is communicated with the oil inlet groove 61 in one of the pressing plates 6, the other end of each cooling hole 41 is communicated with the oil throwing hole one 62 in the other pressing plate 6, two oil throwing holes 51 communicated with the oil inlet grooves 61 in the two pressing plates 6 are formed in the side wall of the hollow rotating shaft 5, specifically, the two oil throwing holes 51 are arranged in two groups, the two groups are axially arranged at intervals along the hollow rotating shaft 5, and the two groups of throwing holes 51 are respectively communicated with the oil inlet grooves 61 in the two pressing plates 6.
According to the invention, oil enters the oil way I11 and then respectively flows into the oil cooling channel I and the oil way II 21, the oil flowing into the oil cooling channel I is directly contacted with the surface of the stator 3 to dissipate heat on the surface of the stator 3, the oil flowing into the oil way II 21 enters the hollow rotating shaft 5 and enters the oil inlet groove 61 through the oil throwing hole II 51, then passes through the cooling hole 41 and is sprayed out from the oil throwing hole I62, under the centrifugal action of the rotation of the rotor 4, the oil sprayed out along the oil throwing hole I62 is thrown onto the inner side of the winding 8, and the oil flowing out of the oil way II 21 can dissipate heat of the hollow rotating shaft 3, the rotor 4 and the winding 8, so that all heating parts in the motor are cooled comprehensively, local hot spots are eliminated, the temperature uniformity of the motor is improved, and the service life of the motor is prolonged. In the invention, the oil is contacted with the stator 3, the hollow rotating shaft 3, the rotor 4 and the winding 8, so that the heat transfer path and the thermal resistance are reduced, the cooling efficiency is high, and the power density of the motor is improved. Meanwhile, oil entering along the oil way I11 can simultaneously meet the cooling requirements of the stator 3 area and the rotor 4 area, the cooling efficiency is effectively improved under the condition that the integral size of the motor is not increased and the rotation of the hollow rotating shaft 5 is not influenced, and the integral oil cooling structure is more reasonable.
As shown in fig. 2, 3 and 9, the first oil path 11 is arranged along the axial direction of the casing 1, the second oil path 21 is arranged along the radial direction of the end cover 2, a connecting hole first 23 is arranged on one side surface of the second oil path 21, and when the end cover 2 is fixed on the casing 1, the connecting hole first 23 is aligned with the end part of the first oil path 11, so that the first oil path 11 and the second oil path 21 are communicated. According to the invention, the first oil way 11 and the second oil way 21 are connected without arranging an additional connecting piece, so that the complexity of the motor shell structure can be reduced, and the overall compactness of the motor is improved.
The inner wall of the shell 1 is provided with a first oil cooling channel 13, the first oil cooling channel 13 can be annular or spiral, the first oil cooling channel 13 is provided with more than two circles around the inner wall of the shell 1, the inner wall of the shell 1 is also provided with a first oil guide groove 14, the first oil guide groove 14 penetrates through the first oil cooling channel 13 on the outermost side and extends to be communicated with the first oil cooling channel 13 on the outermost side, specifically, when the number of turns of the first oil cooling channel 13 is two, the first oil guide groove 14 penetrates through the space between the two circles of the first oil cooling channels 13, two ends of the first oil guide groove 14 are respectively communicated with the two circles of the first oil cooling channels 13, when the number of turns of the first oil cooling channel 13 is more than three circles, the first oil guide groove 14 is communicated with the first oil cooling channel 13 on the outermost side, and the other end penetrates through the first oil cooling channel 13 in the middle and extends to be communicated with the first oil cooling channel 13 on the outermost side, so that a plurality of parallel channels are formed between all the first oil cooling channels 13, namely, the structure shown in figures 5-8. The first oil guide groove 14 is communicated with the first oil way 11 through the oil guide hole 12, the stator 3 is attached to the inner wall of the shell 1, so that an oil cooling channel I is formed in the first oil cooling channel 13 area, and an oil guide channel I is formed in the first oil guide groove 14 area, so that oil can be directly contacted with the surface of the stator 3. In the invention, more than two circles of oil cooling channels I13 are arranged, and then the oil guide grooves I14 are arranged, so that a plurality of parallel channels are formed among all the oil cooling channels I13, oil flows into each circle of oil cooling channels I13 along the oil guide grooves I14 respectively, the oil can be uniformly distributed into each circle of oil cooling channels I13, the oil can be uniformly distributed on the surface of the stator 3, the flowing distribution of the oil on the surface of the stator 3 is more uniform, the temperature difference of the oil flowing into each circle of oil cooling channels I13 is smaller, the flow resistance of the oil is smaller, and the uniform cooling of the stator 3 is facilitated, wherein the oil guide holes 12 are preferably communicated with the middle parts of the oil guide grooves I14, so that the speeds of the oil flowing to the two ends of the oil guide grooves I14 can be approximately the same, the uniformity of the flowing distribution of the oil is further improved, and the uniform cooling of the stator 3 is facilitated.
As shown in fig. 5 and 6, the first embodiment of the casing 1 of the present invention is shown, in which the first oil cooling channel 13 is annular. As shown in fig. 7 and 8, the second embodiment of the casing 1 of the present invention is shown, in which the first oil cooling channel 13 is spiral.
Based on any one or two embodiments, the inner wall of the casing 1 is further provided with two oil cooling channels two 16, all the oil cooling channels one 13 are located between the two oil cooling channels two 16, the two oil cooling channels two are communicated with the oil cooling channels one 13, two ends of the stator 3 are respectively provided with an oil collecting ring 9, the two oil collecting rings 9 are attached to the inner wall of the casing 1, so that the areas of the oil cooling channels two 16 form the oil cooling channels two, the oil collecting ring 9 is provided with oil spraying holes one 91 facing the winding 8, and preferably, the oil spraying holes one 91 are arranged on the oil collecting ring 9 in an annular array. The oil which flows through the first oil cooling channel 13 and cools the stator 3 flows into the second oil cooling channel and is sprayed to the outer side of the winding 8 along the first oil spraying hole 91 to cool the winding 8, and the cooling effect of the winding 8 is further improved. In the invention, the aperture of the first oil injection hole 91 is smaller, and the space of the second oil cooling channel is relatively larger than that of the first oil injection hole 91, so that the whole second oil cooling channel can be filled with oil, a certain oil pressure is formed, the uniform oil distribution of the first oil injection hole 92 is ensured, and the uniform cooling of the winding 8 is facilitated.
And the inner wall of the machine shell 1 is provided with a second oil guide groove 15, and the stator 3 is attached to the inner wall of the machine shell 1, so that a second oil guide channel is formed in the area of the second oil guide groove 15. As shown in fig. 6 and 8, one end of the oil guide groove two 15 is connected with one oil cooling channel two 16, and the other end passes through the oil cooling channel one 13 to be connected with the other oil cooling channel two 16, in order to ensure the uniformity of the oil flow distribution, the oil guide groove two 15 and the oil guide groove one 14 are located on the same cross section with the axis of the machine shell 1, so that the arc-shaped channel paths formed after all the oil cooling channels one 13 are divided by the oil guide groove two 15 and the oil guide groove one 14 are basically the same, thereby ensuring that the oil amount flowing into the two oil cooling channels two 16 is basically the same, and ensuring the temperature uniformity of the two windings 8.
The invention also comprises an oil guide pipe 7, a second connecting hole 24 is formed in the side face of one end, close to the hollow rotating shaft 5, of the second oil way 21, one end of the oil guide pipe 7 is fixedly connected with the second connecting hole 24, the other end of the oil guide pipe extends into the hollow rotating shaft 5, and the oil guide pipe 7 does not rotate along with the hollow rotating shaft 5. One end of the oil guide pipe 7 extending into the hollow rotating shaft 5 is closed, a second oil injection hole 71 is formed in the side wall of the oil guide pipe 7, the axis of the second oil injection hole 71 is perpendicular to the axis of the oil guide pipe 7, and the second oil injection hole 71 is radially arranged on the oil guide pipe 7. The hollow rotating shaft 5 is communicated with the second oil channel 21 through the oil guide pipe 7, the oil injection hole 71 is radially arranged on the oil guide pipe 7, the flow speed of oil sprayed out of the oil injection hole 71 is large, the oil can be sprayed onto the inner surface of the hollow rotating shaft 5, the convective heat transfer effect is strong, the oil injection hole 71 is preferably located between the two groups of the second oil throwing holes 51, the oil injection hole 71 is further preferably located between the two groups of the second oil throwing holes 51, the distance from the oil injection hole 71 to the two groups of the second oil throwing holes 51 is equal, oil entering the oil inlet grooves 61 of the two pressing plates 6 is more uniform, and further the cooling of the rotor 4 and the winding 8 is more uniform.
The hollow rotating shaft 5 is matched with two bearings 10, the two bearings 10 are respectively arranged on the shell 1 and the end cover 2, the side wall of the oil path two 21 is provided with an oil injection hole three 22, the oil injection hole three 22 is arranged towards the bearing 10 on the end cover 2 to cool and lubricate the bearing 10, the side wall of the hollow rotating shaft 5 is provided with an oil throwing hole three 52, the oil throwing hole three 52 is arranged towards the bearing 10 on the shell 1, oil sprayed out along the oil throwing hole three 52 is thrown onto the bearing 10 to cool and lubricate the bearing 10, the cooling comprehensiveness is improved, and all heat generating parts are comprehensively cooled.
The quantity of cooling hole 41 is the even number for oil groove 61 is the same with the quantity of getting rid of oil hole 62 on single clamp plate 6, and oil feed tank 61 is the setting of hoop array with getting rid of oil hole 62 simultaneously on clamp plate 6, and oil feed tank 61 and get rid of crisscross setting between oil hole 62, and the homogeneity that the guarantee fluid flowed in and flowed out does benefit to rotor 4 and winding 8 cooling evenly.
In the invention, the shell 1 is provided with the oil outlet 17 communicated with the cavity of the shell 1, the oil outlet 17 and the oil inlet end of the oil way I11 are positioned on the same side, so that the oil inlet pipeline and the oil outlet pipeline are convenient to mount and connect, and the compactness of the whole structure is improved.
Referring to the views shown in fig. 2-4, the specific working principle of the present invention is as follows: oil enters from the oil inlet end of the first oil way 11 of the machine shell 1 and flows rightwards along the top axial direction of the machine shell 1, and then the oil is divided into two oil cooling branches.
The first oil cooling branch: the oil cooling device is composed of a first oil cooling channel formed by matching the machine shell 1 and the stator 2, a second oil cooling channel formed by matching the oil collecting ring 9 and the machine shell 1, and a first oil injection hole 92 uniformly distributed on the oil collecting ring 9 in the circumferential direction. Oil enters a first flow guide channel 14 from an oil guide hole 12 in the middle of the top of the machine shell 1, and respectively enters a plurality of first oil cooling channels 13 (first oil cooling channels) connected in parallel through the first flow guide channel 14, and then flows from the top to the bottom along the first oil cooling channels 13 in the circumferential direction. The oil liquid flows into the second oil cooling channels 16 on the left side and the right side respectively along the axial direction after converging in the second bottom oil guide groove 15, and the oil liquid is filled in the second oil cooling channels 16 (the second oil cooling channels) from the bottom to the top and is sprayed to the outer surface of the end part of the winding 8 from the first oil spraying hole 92 of the oil collecting ring 9. The first oil cooling branch cools the stator 3 and the winding 8.
A second oil cooling branch: the cooling device comprises an oil passage II 21, an oil guide pipe 7, a hollow rotating shaft 5, an oil inlet groove 61, a cooling hole 41 and an oil throwing hole I62. Oil enters the oil passage II 21 from the right end of the top of the machine shell 1 and then flows downwards, a small part of oil is sprayed to the right end bearing 10 from the oil injection hole III 22, the rest of oil enters the oil guide pipe 7 and then flows out of the oil injection hole II 71 to the inner surface of the hollow rotating shaft 5, the oil flows to the left side and the right side in the cavity of the hollow rotating shaft 5 and enters the oil inlet groove 61 at one end of the rotor 4 along the oil throwing hole II 51 under the action of centrifugal force, and the oil flows to the other end from one end of the cooling hole 41. Due to the centrifugal force, the oil is accumulated at the top end of the cooling hole 41 far away from the axis and is finally thrown out from the oil throwing hole one 62 at the other end of the rotor 4 to the inner surface of the end part of the winding 8. Meanwhile, a small part of the oil in the hollow rotating shaft 5 is thrown out to the surface of the left end bearing 10 along the oil throwing hole 52. The second oil cooling branch is used for cooling the hollow rotating shaft 5, the rotor 4, the winding 8 and the bearing 10.
The oil liquid of the first oil cooling branch and the second oil cooling branch falls back to the bottom of the cavity of the machine shell 1 under the action of gravity and flows out to the oil liquid circulating system along the oil outlet 17.
Claims (10)
1. An oil circuit structure of a motor is characterized by comprising an oil circuit I (11) arranged on a shell (1) and an oil cooling channel I arranged between the shell (1) and a stator (3), wherein the oil cooling channel I is communicated with the oil circuit I (11); the rotor structure is characterized by further comprising a hollow rotating shaft (5) axially penetrating through the middle of the rotor (4) and an oil way II (21) arranged on the end cover (2), wherein the two ends of the oil way II (21) are communicated with the oil way I (11) and the hollow rotating shaft (5) respectively, cooling holes (41) penetrating through the two end faces of the rotor (4) are formed in the rotor (4), a pressing plate (6) is tightly attached to each end face of the rotor (4), an oil inlet groove (61) and an oil throwing hole I (62) are arranged on each pressing plate (6), the two ends of each cooling hole (41) are correspondingly communicated with the oil inlet groove (61) and the oil throwing hole I (62) respectively, and an oil throwing hole II (51) communicated with the oil inlet groove (61) is arranged on the side wall of the hollow rotating shaft (5).
2. The oil circuit structure of the motor according to claim 1, wherein the first oil circuit (11) is disposed along an axial direction of the housing (1), the second oil circuit (21) is disposed along a radial direction of the end cover (2), and a side surface of one end of the second oil circuit (21) is provided with a first connecting hole (23), and when the end cover (2) is fixed to the housing (1), the first connecting hole (23) is aligned with an end of the first oil circuit (11) to communicate the first oil circuit (11) with the second oil circuit (21).
3. The oil circuit structure of the motor according to claim 1, wherein the inner wall of the housing (1) is provided with a first oil cooling channel (13), the first oil cooling channel (13) is provided with more than two circles around the inner wall of the housing (1), the inner wall of the housing (1) is further provided with a first oil guiding groove (14), the first oil guiding groove (14) penetrates through the first oil cooling channel (13) on the outermost side and extends to be communicated with the first oil cooling channel (13) on the outermost side, so that parallel channels are formed between the two circles of the first oil cooling channels (13), the first oil guiding groove (14) is communicated with the first oil circuit (11) through an oil guiding hole (12), and the stator (3) is attached to the inner wall of the housing (1) to enable the first oil cooling channel (13) region to form a first oil cooling channel and the first oil guiding groove (14) region to form a first oil guiding channel.
4. The oil circuit structure of an electric motor according to claim 3, wherein the first oil cooling channel (13) is annular.
5. The oil circuit structure of the motor according to claim 3 or 4, wherein the inner wall of the housing (1) is provided with two oil cooling channels two (16), the oil cooling channel one (13) is located between the two oil cooling channels two (16), the two oil cooling channels two are communicated with the oil cooling channel one (13), two ends of the stator (3) are respectively provided with an oil collecting ring (9), the two oil collecting rings (9) are attached to the inner wall of the housing (1) to enable the area of the oil cooling channel two (16) to form the oil cooling channel two, and the oil collecting ring (9) is provided with a first oil injection hole (91) facing the winding (8).
6. The oil circuit structure of the motor according to claim 5, wherein the inner wall of the housing (1) is provided with a second oil guide groove (15), one end of the second oil guide groove (15) is connected with the second oil cooling channel (16), the other end of the second oil guide groove passes through the first oil cooling channel (13) to be connected with the second oil cooling channel (16), and the second oil guide groove (15) and the first oil guide groove (14) are positioned on the same cross section passing through the axis of the housing (1).
7. The oil circuit structure of the motor according to claim 1, further comprising an oil conduit (7), wherein one end of the oil conduit (7) is connected to the second oil circuit (21), the other end of the oil conduit extends into the hollow rotating shaft (5), one end of the oil conduit (7) extending into the hollow rotating shaft (5) is closed, and a second oil injection hole (71) is radially formed on the side wall of the oil conduit (7).
8. The oil circuit structure of the motor according to claim 1, wherein the hollow rotating shaft (5) is provided with two bearings (10), the two bearings (10) are respectively arranged on the casing (1) and the end cover (2), the side wall of the oil circuit two (21) is provided with an oil injection hole three (22), the oil injection hole three (22) is arranged towards the bearing (10) on the end cover (2), the side wall of the hollow rotating shaft (5) is provided with an oil throwing hole three (52), and the oil throwing hole is arranged towards the bearing (10) on the casing (1).
9. The oil circuit structure of the motor according to any one of claims 1 to 4 and 6 to 8, wherein the number of the cooling holes (41) is even, the oil inlet grooves (61) and the first oil slingers (61) are arranged on the pressure plate (6) in a circumferential array, and the oil inlet grooves (61) and the first oil slingers (61) are arranged in a staggered manner.
10. The motor oil way structure according to any one of claims 1 to 4 and 6 to 8, characterized in that an oil outlet (17) communicated with the cavity of the machine shell (1) is arranged on the machine shell (1), and the oil outlet (17) and the oil inlet end of the oil way I (11) are positioned on the same side of the machine shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111076304.2A CN115811179A (en) | 2021-09-14 | 2021-09-14 | Oil circuit structure of motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111076304.2A CN115811179A (en) | 2021-09-14 | 2021-09-14 | Oil circuit structure of motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115811179A true CN115811179A (en) | 2023-03-17 |
Family
ID=85481560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111076304.2A Pending CN115811179A (en) | 2021-09-14 | 2021-09-14 | Oil circuit structure of motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115811179A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116566123A (en) * | 2023-07-10 | 2023-08-08 | 福建华大电机有限公司 | Oil-cooled permanent magnet variable frequency motor |
-
2021
- 2021-09-14 CN CN202111076304.2A patent/CN115811179A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116566123A (en) * | 2023-07-10 | 2023-08-08 | 福建华大电机有限公司 | Oil-cooled permanent magnet variable frequency motor |
| CN116566123B (en) * | 2023-07-10 | 2023-09-19 | 福建华大电机有限公司 | Oil-cooled permanent magnet variable frequency motor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2022037263A1 (en) | Oil-water combined cooling electric motor system, and vehicle | |
| US6087744A (en) | Electrical machine | |
| WO2022001268A1 (en) | Motor, motor cooling system, and electric vehicle | |
| US9397536B2 (en) | Rotating electrical machine for vehicles with liquid cooling | |
| CN216016641U (en) | Motor oil circuit structure | |
| TWI776154B (en) | Liquid-cooled radiator and vehicle | |
| CN114629297B (en) | Liquid cooling motor | |
| CN113241880A (en) | Oil-cooled motor with built-in oil way structure | |
| CN113422472A (en) | Oil-cooled motor cooling system | |
| CN216851493U (en) | Rotor cooling structure and motor | |
| CN110868022B (en) | Oil-cooled motor structure, main drive motor and motor cooling system | |
| CN113381531A (en) | Stator cooling structure and motor with same | |
| CN100388595C (en) | Flow-through spaceblocks with deflectors and method for increased electric generator endwinding cooling | |
| US20230299629A1 (en) | Rotor, motor, and electric vehicle | |
| CN115811179A (en) | Oil circuit structure of motor | |
| US11973407B2 (en) | Thermal management techniques for electric motors | |
| CN116191707A (en) | Oil cooling heat radiation structure | |
| CN114285202B (en) | Motor and rotor thereof | |
| CN108880022B (en) | External rotor self-circulation liquid cooling permanent magnet motor | |
| CN113541401A (en) | Ultra-high speed motor rotor cooling structure and shaft end liquid stirring device thereof | |
| CN219372120U (en) | Motor with a motor housing | |
| CN115360849B (en) | Flywheel energy storage system | |
| CN110233545A (en) | A kind of multiple stators motor cooling heat radiator | |
| CN215772843U (en) | Ultra-high speed motor rotor cooling structure and shaft end liquid stirring device thereof | |
| CN112865397B (en) | Motor cooling oil circuit structure |
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 | ||
| CB02 | Change of applicant information |
Address after: No. 30, Yanxin East Road, Huishan Economic Development Zone, Wuxi City, Jiangsu Province Applicant after: Wuxi CRRC Times Electric Drive Technology Co.,Ltd. Address before: No. 30, Yanxin East Road, Huishan Economic Development Zone, Wuxi City, Jiangsu Province Applicant before: Wuxi Zhongche Haofu power assembly Co.,Ltd. |
|
| CB02 | Change of applicant information |