CN214799077U - Motor with parallel oil cooling structure - Google Patents
Motor with parallel oil cooling structure Download PDFInfo
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- CN214799077U CN214799077U CN202120263546.1U CN202120263546U CN214799077U CN 214799077 U CN214799077 U CN 214799077U CN 202120263546 U CN202120263546 U CN 202120263546U CN 214799077 U CN214799077 U CN 214799077U
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Abstract
The utility model relates to a motor with parallel oil cooling structure, which comprises a shell, a stator component, a rotor component, end covers positioned at two sides of the shell, a stator oil nozzle, a rotor oil nozzle, a stator oil cooling channel, a rotor oil cooling channel and an oil nozzle; the rotor oil cooling channel comprises an oil storage cavity and a rotor inner channel, the oil storage cavity is arranged in the rotating shaft, the rotor inner channel is arranged in the rotor iron core, oil throwing holes are distributed on the rotating shaft and used for communicating the oil storage cavity with the rotor inner channel, each rotor end plate is provided with an open slot communicated with the gap of the inner cavity of the machine shell, the end part of the rotor inner channel is connected with the open slot, and a rotor oil nozzle is arranged at one end of the rotating shaft and connected with the oil storage cavity; the oil outlet nozzle is arranged at the bottom of the machine shell and communicated with the gap of the inner cavity of the machine shell. Compared with the prior art, the utility model discloses realize the independent cooling and lubrication of stator module and the rotor subassembly of motor structure, realize the directional fuel feeding of motor ration, the high-efficient intelligence of cooling is controllable.
Description
Technical Field
The utility model relates to an oil-cooled motor structure especially relates to a motor with cold structure of block form oil.
Background
With the rapid development and technical promotion of electric vehicles, the market puts higher demands and expectations on the performance of a driving motor, and a driving motor having small volume, light weight and high performance has been the target of the next generation of electric vehicles. The current water-cooled motor cannot well meet the market pursuit, a new motor design scheme is urgently needed to meet the market target, and the oil-cooled motor has the advantage just compared with the water-cooled motor, so that more engineers and enterprises try to adopt the oil-cooled motor design to meet the market demand. The existing oil-cooled motor is usually designed only by carrying out an oil-cooled structure on a stator part, and the heat dissipation capability and the heat dissipation efficiency are still required to be improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a motor with parallel oil cooling structure in order to overcome the defect that above-mentioned prior art exists, adopt motor stator and rotor parallel oil cooling structure, effectively improve the cooling radiating efficiency of motor, realize the high power and the miniaturization of motor.
The purpose of the utility model can be realized through the following technical scheme:
a motor with a parallel oil cooling structure comprises a machine shell, a stator component, a rotor component and end covers positioned on two sides of the machine shell, wherein the stator component is fixed on the inner side wall of the machine shell, the rotor component is arranged in the stator component and comprises a bearing, a rotating shaft, a rotor core and two rotor end plates, the rotating shaft is arranged on the machine shell through the bearing, the two rotor end plates are fixed at two ends of the rotor core and are jointly arranged on the rotating shaft, a gap of an inner cavity of the machine shell is formed among the rotor component, the stator component and the machine shell, and the motor also comprises a stator oil nozzle, a rotor oil nozzle, a stator oil cooling channel, a rotor oil cooling channel and an oil outlet nozzle,
the stator oil cooling channel is axially arranged in the top end of the shell, a stator annular oil groove is formed in the inner side wall of the shell, an annular oil cavity is formed by the stator annular oil groove and the stator assembly, the stator oil cooling channel and the annular oil cavity are communicated through an oil distributing hole, and the stator oil nozzle is connected with one end of the oil cooling channel;
the rotor oil cooling channel comprises an oil storage cavity and a rotor inner channel, the oil storage cavity is arranged in the rotating shaft, the rotor inner channel is arranged in the rotor core, the rotating shaft is provided with a rotor annular oil groove, oil throwing holes are distributed in the rotor annular oil groove and used for communicating the oil storage cavity with the rotor inner channel, each rotor end plate is provided with an open slot communicated with the gap of the inner cavity of the shell, the end part of the rotor inner channel is connected with the open slot, and the rotor oil nozzle is arranged at one end of the rotating shaft and connected with the oil storage cavity;
the oil outlet nozzle is arranged at the bottom of the machine shell and communicated with the gap of the inner cavity of the machine shell.
Further, the stator assembly comprises a long screw and a winding iron core, the winding iron core is fixed on the casing through the long screw, two ends of the winding iron core are winding end portions, the oil guide arc mechanism is arranged between the winding end portions and the inner wall of the top casing, the oil guide arc mechanism bends downwards, the center of the top of the oil guide arc mechanism is communicated with a stator oil cooling channel through a side oil hole, and oil spraying holes are distributed in the oil guide arc mechanism.
Furthermore, the open slot is communicated with the gap of the inner cavity of the machine shell through an oil discharge hole, and the outlet end of the oil discharge hole points to the end part of the winding.
Furthermore, the end cover on be equipped with and lead oil groove and bearing room, the bearing is installed in the bearing room, be equipped with oblique oilhole on the cold passageway of stator oil, lead the oblique oilhole of oil groove intercommunication.
Furthermore, the rotor core comprises a plurality of first iron cores and a second iron core, the first iron cores are symmetrically distributed on two sides of the second iron core, oil passing grooves are distributed on the side wall of the shaft hole of the second iron core, punching sheet oil passages are distributed on the first iron core, the oil passing grooves are communicated with the punching sheet oil passages to jointly form a rotor inner channel, the oil passing grooves are communicated with the oil throwing holes, and the punching sheet oil passages of the first iron core on the outermost side are communicated with the open grooves.
Further, the shaft hole of the second iron core is nested outside the annular oil groove of the rotor, and the width of the second iron core is larger than that of the annular oil groove of the rotor.
Furthermore, one end of the rotating shaft is provided with a central oil hole, and the rotor oil nozzle is connected with the oil storage cavity through the central oil hole.
Furthermore, a rotary transformer wiring cavity is formed between the end cover on one side and the cover plate of the rotary transformer wiring cavity, an oil return hole is formed in the bottom end of the rotary transformer wiring cavity and used for communicating the gap of the inner cavity of the machine shell, and the joint of the central oil hole and the rotor oil nozzle is located in the rotary transformer wiring cavity.
Furthermore, the inner side wall of the shell is provided with a plurality of rows of parallel stator annular oil grooves.
Furthermore, one side end cover is motor three-phase leading-out terminal, and end cover and three-phase line pass through the connection terminal sealed to pass through the oil blanket with the rotor subassembly and seal.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model designs the contact cooling structure adopting lubricating oil for the stator assembly and the rotor assembly of the motor, thereby rapidly and effectively dissipating the heat of the motor and expanding the power lifting space of the motor; compare traditional single stator cooling, the increase of stator rotor oil cooling structure can effectively reduce the magnet steel high temperature demagnetization effect in the rotor, ensures motor power density and moment of torsion density, promotes motor adaptability.
2. The utility model discloses a block design of stator glib talker and rotor glib talker realizes the cold control of independent oil to stator module and rotor subassembly, can adopt different fuel feeding tactics and cooling scheme to stator module and rotor subassembly according to quick-witted heat dissipation power and motor speed, realizes whole cooling system's optimization regulation and control, makes power assembly system's energy consumption optimization.
3. The utility model discloses the most serious winding overhang that generates heat has increased oil guide arc mechanism in to stator module, carries out the local cooling and strengthens, makes motor shaft fully get into the lubricated operating mode of oil simultaneously, improves the bearing reliability, effectively draws the highest design rotational speed of motor.
4. And final lubricating oil in the rotor oil cooling mechanism flows to the winding end part with the most serious heat generation in the stator assembly through the open slot and the oil discharge hole, so that the cooling and lubricating effects are further improved.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic sectional view of the internal structure of the present invention.
Fig. 3 is a partial cross-sectional schematic view of the housing.
Fig. 4 is a partial cross-sectional schematic view of a stator assembly.
Fig. 5 is a schematic view of the end cap structure.
Fig. 6 is a schematic view of a stator assembly.
Fig. 7 is a schematic sectional view of the rotating shaft.
Fig. 8 is a schematic structural view of the second core.
Fig. 9 is a schematic structural diagram of the first core.
Fig. 10 is a schematic structural view of a rotor end plate.
Reference numerals:
1-machine shell, 11-machine shell inner cavity gap, 12-stator annular oil groove, 13-annular oil cavity, 14-rotary transformer wiring cavity and 15-wiring seat;
2-end cover, 21-oil guiding groove, 22-bearing chamber;
3-stator component, 31-long screw, 32-winding iron core, 321-winding end;
4-rotor component, 41-bearing, 42-rotating shaft, 421-rotor annular oil groove, 422-oil throwing hole, 423-central oil hole, 43-rotor core, 431-first core, 431 a-stamped oil channel, 432-second core, 432 a-oil passing groove, 44-rotor end plate, 441-open slot and 442-oil discharge hole;
5-stator oil nozzle;
6-rotor oil nozzle;
7-stator oil cooling channel, 71-oil dividing hole, 72-side oil hole and 73-inclined oil hole;
8-rotor oil cooling channel, 81-oil storage chamber;
9-oil outlet;
10-oil guide arc mechanism and 101-oil spraying hole.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
As shown in fig. 1 and 2, the present embodiment provides an electric machine having a side-by-side oil-cooled structure, including a machine case 1, a stator assembly 3, a rotor assembly 4, and end caps 2 at both sides of the machine case 1. One side end cover 2 is motor three-phase outlet terminal, and end cover 2 and three-phase line pass through connection terminal 15 sealed to pass through the oil blanket with rotor subassembly 4 and seal. Stator module 3 is fixed on the inside wall of casing 1, and rotor subassembly 4 is installed in stator module 3. A shell inner cavity gap 11 is formed among the rotor assembly 4, the stator assembly 3 and the machine shell 1. The motor also comprises a stator oil nozzle 5, a rotor oil nozzle 6, a stator oil cooling channel 7, a rotor oil cooling channel 8 and an oil nozzle 9. The stator oil nozzle 5 is arranged right above the rear end cover 2 assembly and is connected with a stator oil cooling channel 7; the rotor oil nozzle 6 is arranged at the central position of the rear end cover 2; the oil outlet nozzle 9 is provided at the bottom of the rear end cap 2.
The stator assembly 3 includes a long screw 31 and a winding core 32, and the winding core 32 is fixed on the inner sidewall of the casing 1 by the long screw 31. As shown in fig. 3 and 4, the stator oil cooling passage 7 is axially provided in the top end of the casing 1. The stator oil cooling passage 7 is provided with an oil distribution hole 71, a side oil hole 72, and an inclined oil hole 73 in this order from the center to both sides. The center of the inner side wall of the casing 1 is provided with a plurality of parallel rows of stator annular oil grooves 12, an annular oil chamber 13 is formed between the stator annular oil grooves 12 and the winding core 32, and the annular oil chamber 13 and the stator oil cooling passage 7 are communicated through oil passing holes 71.
The winding core 32 has two ends, which are winding ends 321, and the oil guiding arc mechanisms 10 are respectively disposed above the two winding ends 321, as shown in fig. 2 and 4. The oil guide arc mechanism 10 is fixed on the casing 1 and is bent downward. The center of the top of the stator is communicated with the stator oil cooling channel 7 through the side oil hole 72, and downward oil spraying holes 101 are distributed on the body of the stator for pouring oil like the winding end part 321 to realize the reinforced cooling of the winding end part 321.
As shown in fig. 5, the rear end cap 2 is provided with an oil guide groove 21 and a bearing chamber 22, the bearing chamber 22 is used for fixing the bearing 41 of the rotor assembly 4, and the oil guide groove 21 is connected with the inclined oil hole 73 on the stator oil cooling channel 7 and is used for conveying oil to the bearing 41 for cooling. The front end cover is similar in structure to the rear end cover 2, and is also provided with an oil guide groove 21 and a bearing chamber 22.
Thus, when the lubricating oil is delivered to the stator oil cooling passage 7 through the stator oil nipple 5, a part of the lubricating oil forms an oil film in the stator annular oil groove 12 through the oil delivery hole 71, and the wound core 32 is cooled and lubricated; the other part of the lubricating oil enters the oil guide arc-shaped mechanism 10 through the side oil hole 72, and the oil is sprayed to the winding end part 321 for enhanced cooling and lubrication; the last part of the lubricating oil enters the oil guide groove 21 and the bearing chamber 22 through the oblique oil hole 73 to cool and lubricate the bearing 41. All the lubricating oil finally enters the gap 11 of the inner cavity of the machine shell and is recovered through the oil outlet nozzle 9.
As shown in fig. 6 and 7, the rotor assembly 4 includes a bearing 41, a rotating shaft 42, a rotor core 43, and two rotor end plates 44. The rotating shaft 42 is mounted on the housing 1 through a bearing 41, and the bearing 41 is specifically mounted in the bearing cavity 22 of the end cover 2. Two rotor end plates 44 are fixed at both ends of the rotor core 43, and the rotor end plates 44 and the rotor core 43 are mounted together on the rotating shaft 42. The rotor oil cooling channel 8 comprises an oil storage cavity 81 and a rotor inner channel, wherein the oil storage cavity 81 is arranged in the rotating shaft 42, namely the rotating shaft 42 is a hollow shaft, and the cavity of the rotating shaft is the oil storage cavity 81. One end of the oil storage chamber 81 is provided with a center oil hole 423 for connecting the rotor oil nipple 6, and the lubricating oil is injected into the oil storage chamber 81 through the center oil hole 423. A circle of rotor annular oil groove 421 is arranged at the center of the rotating shaft 42, and oil throwing holes 422 are distributed inside the rotor annular oil groove. The rotor internal passage is provided in the rotor core 43. The rotor core 43 specifically includes four first cores 431 and one second core 432. The first cores 431 are symmetrically arranged on two sides of the second core 432 in pairs. As shown in fig. 8 and 9, oil passing grooves 432a are distributed on the side wall of the shaft hole of the second iron core 432, and stamping oil passages 431a are distributed on the first iron core 431, and after the first iron core 431 and the second iron core 432 are installed, the oil passing grooves 432a and the stamping oil passages 431a are communicated with each other, so that a rotor inner channel is formed. When the rotor is installed, the shaft hole of the second iron core 432 is nested outside the annular oil groove 421 of the rotor, and the width of the second iron core 432 is larger than that of the annular oil groove 421 of the rotor, so that the center of the inner channel of the rotor is communicated with the oil storage cavity 81 through the oil passing groove 432a and the oil throwing hole 422. An open groove 441 communicating with the gap of the inner cavity of the casing is provided in the rotor end plate 44, the open groove 441 communicates with the gap of the inner cavity of the casing through an oil discharge hole 442, and an outlet end of the oil discharge hole 442 points to the winding end 321. The punching sheet oil passage 431a of the outermost first iron core 431 communicates with the open groove 441.
The lubricating oil enters the oil reservoir chamber 81 through the rotor nipple 6. When the motor rotates, the lubricating oil enters the opening groove 441 of the rotor end plate 44 from the oil slinger 422 through the annular oil groove and the punching oil passage 431a, and finally the lubricating oil is thrown to the winding end 321 through the radial oil passage.
A rotary transformer wiring cavity 14 is formed between the end cover 2 at one side and the cover plate, and an oil return hole is formed at the bottom end of the rotary transformer wiring cavity 14 and used for communicating the gap of the inner cavity of the machine shell. The joint of the central oil hole 423 and the rotor oil nipple 6 is positioned in the rotary transformer wiring cavity 14. When the oil storage chamber 81 is in an excessive amount, the lubricating oil overflows through the central oil hole 423, flows into the rotary transformer wiring chamber 14, flows into the gap of the inner cavity of the machine shell through an oil return port, and is finally discharged through the oil outlet nozzle 9.
To sum up, the motor structure design of this embodiment has two inlet ports, and stator module 3 and rotor subassembly 4 respectively distribute an oil feed mouth, and the oil duct structure that two oil feed mouths correspond exists side by side in that the motor is inside, realizes stator module 3 and the independent cooling and lubrication of rotor subassembly 4, and the design of motor oil nozzle can be in motor bottom, can with external oil circuit circulation intercommunication. Compared with the prior art, this embodiment has realized the independent cooling and lubrication of stator module 3 and rotor subassembly 4 of motor structure, realizes the directional fuel feeding of motor ration, and the high-efficient intelligence of cooling is controllable.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. The utility model provides a motor with cold structure of block form oil, includes casing (1), stator module (3), rotor subassembly (4) to and be located end cover (2) of casing (1) both sides, stator module (3) are fixed on the inside wall of casing (1), install in stator module (3) rotor subassembly (4), including bearing (41), pivot (42), rotor core (43) and two rotor end plates (44), install on casing (1) through bearing (41) pivot (42), two rotor end plates (44) are fixed at the both ends of rotor core (43), install jointly on pivot (42), form between rotor subassembly (4), stator module (3) and casing (1) three and have shell inner chamber clearance (11), its characterized in that still includes stator glib talker (5), rotor glib (6), A stator oil cooling channel (7), a rotor oil cooling channel (8) and an oil outlet nozzle (9),
the stator oil cooling channel (7) is axially arranged in the top end of the machine shell (1), a stator annular oil groove (12) is formed in the inner side wall of the machine shell (1), an annular oil cavity (13) is formed by the stator annular oil groove (12) and the stator assembly (3), the stator oil cooling channel (7) is communicated with the annular oil cavity (13) through an oil passing hole (71), and the stator oil nozzle (5) is connected with one end of the oil cooling channel;
the rotor oil cooling channel (8) comprises an oil storage cavity (81) and a rotor inner channel, the oil storage cavity (81) is arranged in a rotating shaft (42), the rotor inner channel is arranged in a rotor core (43), the rotating shaft (42) is provided with a rotor annular oil groove (421), oil throwing holes (422) are distributed in the rotor annular oil groove (421), the oil throwing holes (422) are used for communicating the oil storage cavity (81) with the rotor inner channel, each rotor end plate (44) is provided with an open slot (441) communicated with a shell inner cavity gap (11), the end part of the rotor inner channel is connected with the open slot (441), and the rotor oil nozzle (6) is arranged at one end of the rotating shaft (42) and connected with the oil storage cavity (81);
the oil outlet nozzle (9) is arranged at the bottom of the machine shell (1) and communicated with the gap (11) of the inner cavity of the machine shell.
2. The motor with the parallel oil cooling structure according to claim 1, further comprising an oil guiding arc mechanism (10), wherein the stator assembly (3) comprises a long screw (31) and a winding core (32), the winding core (32) is fixed on the machine shell (1) through the long screw (31), two ends of the winding core (32) are winding end portions (321), the oil guiding arc mechanism (10) is arranged between the winding end portions (321) and the inner wall of the top machine shell (1), the oil guiding arc mechanism (10) is bent downwards, the center of the top of the oil guiding arc mechanism is communicated with the stator oil cooling channel (7) through a side oil hole (72), and oil spraying holes (101) are distributed on the oil guiding arc mechanism (10).
3. An electric machine with a side-by-side oil-cooled structure according to claim 2, characterized in that the open grooves (441) communicate with the housing interior space (11) through oil drain holes (442), the outlet ends of the oil drain holes (442) pointing to the winding heads (321).
4. The motor with the parallel oil cooling structure according to claim 1, wherein the end cover (2) is provided with an oil guide groove (21) and a bearing chamber (22), the bearing (41) is installed in the bearing chamber (22), the stator oil cooling channel (7) is provided with an oblique oil hole (73), and the oil guide groove (21) is communicated with the oblique oil hole (73).
5. The motor with the parallel oil cooling structure is characterized in that the rotor core (43) comprises a plurality of first cores (431) and a second core (432), the first cores (431) are symmetrically distributed on two sides of the second core (432), oil passing grooves (432a) are distributed on the side wall of the shaft hole of the second core (432), punching oil passages (431a) are distributed on the first cores (431), the oil passing grooves (432a) are communicated with the punching oil passages (431a) to jointly form a rotor inner channel, the oil passing grooves (432a) are communicated with oil throwing holes (422), and the punching oil passages (431a) of the first core (431) on the outermost side are communicated with an open groove (441).
6. An electric machine with a side-by-side oil-cooled structure according to claim 5, characterized in that the shaft hole of the second iron core (432) is nested outside the rotor annular oil groove (421), and the width of the second iron core (432) is larger than the width of the rotor annular oil groove (421).
7. The motor with the parallel oil cooling structure as claimed in claim 1, wherein one end of the rotating shaft (42) is provided with a central oil hole (423), and the rotor oil nipple (6) is connected with the oil storage chamber (81) through the central oil hole (423).
8. The motor with the parallel oil cooling structure according to claim 7, wherein a rotary transformer wiring cavity (14) is formed between the end cover (2) on one side and the cover plate of the motor, an oil return hole is formed at the bottom end of the rotary transformer wiring cavity (14) and used for communicating the gap (11) of the inner cavity of the machine shell, and the joint of the central oil hole (423) and the rotor oil nozzle (6) is positioned in the rotary transformer wiring cavity (14).
9. An electric machine with a side-by-side oil-cooled structure according to claim 1, characterized in that the inner side wall of the machine casing (1) is provided with a plurality of parallel rows of stator ring-shaped oil grooves (12).
10. The motor with the parallel oil cooling structure is characterized in that one side end cover (2) is a three-phase outlet end of the motor, the end cover (2) and the three-phase line are sealed through a wire holder (15), and the end cover and a rotor assembly (4) are sealed through oil seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120263546.1U CN214799077U (en) | 2021-01-30 | 2021-01-30 | Motor with parallel oil cooling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120263546.1U CN214799077U (en) | 2021-01-30 | 2021-01-30 | Motor with parallel oil cooling structure |
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| Publication Number | Publication Date |
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| CN214799077U true CN214799077U (en) | 2021-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120263546.1U Active CN214799077U (en) | 2021-01-30 | 2021-01-30 | Motor with parallel oil cooling structure |
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| CN (1) | CN214799077U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114567102A (en) * | 2022-03-03 | 2022-05-31 | 苏州睿控电动有限公司 | Oil-cooled motor rotor cooling structure |
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2021
- 2021-01-30 CN CN202120263546.1U patent/CN214799077U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114567102A (en) * | 2022-03-03 | 2022-05-31 | 苏州睿控电动有限公司 | Oil-cooled motor rotor cooling structure |
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