CN210093053U

CN210093053U - Double-rotor direct-cooling motor

Info

Publication number: CN210093053U
Application number: CN201921046315.4U
Authority: CN
Inventors: 李岳
Original assignee: Shanghai Wisdom Power Technology Co Ltd
Current assignee: Shanghai Wisdom Power Technology Co Ltd
Priority date: 2019-07-06
Filing date: 2019-07-06
Publication date: 2020-02-18
Anticipated expiration: 2029-07-06

Abstract

The utility model provides a birotor direct cooling motor in motor technical field, includes outside rotor assembly part, inside rotor assembly part and stator assembly part, and outside rotor assembly part includes outer rotor support, outer rotor end plate, outer rotor iron core, outer rotor magnet steel, and inside rotor assembly part includes motor shaft, inner rotor backing plate, inner rotor iron core, inner rotor magnet steel, lead screw lock nut, and stator assembly part includes stator winding dustcoat, stator iron core, stator winding, stiff end, oil drain hole, advances oil pipe, goes out oil pipe, intermediate bottom. The utility model discloses in, intermediate bottom divide into upper and lower two parts to the oil pocket that stator winding right side dustcoat, stator core, stator outer winding, stator inner winding enclose, and upper portion oil pocket is linked together with advancing oil pipe, and lower part oil pocket is linked together with going out oil pipe. The utility model discloses a stator adopts direct oil to be cold, and the winding has solved traditional heat dissipation bottleneck and has caused power density can't be big, motor cost too high a difficult problem.

Description

Double-rotor direct-cooling motor

Technical Field

The utility model relates to a motor technical field's birotor motor, especially a stator adopt direct oil cooling's birotor direct cooling motor.

Background

Conventional motors typically have only one stator and one rotor, and either dc, synchronous or asynchronous machines have only one mechanical port. In recent years, a concept of a dual rotor motor has been proposed, which has two mechanical shafts and can realize independent transmission of energy of the two mechanical shafts. The novel motor greatly reduces the volume and the weight of equipment, improves the working efficiency, can well meet the requirements of energy conservation and speed regulation, and has superior running performance, thereby having good application prospect in many fields. At present, many scientific research institutes have proposed a variety of double-rotor motors, which are called "double-rotor motors" but are different in structure and principle.

In the prior art, some double-rotor motors also adopt the same mechanical shaft, but the heat dissipation is difficult, and the power density cannot be increased.

Disclosure of Invention

The utility model discloses to prior art's not enough, provide a birotor direct cooling motor, can effectively solve the heat dissipation problem of birotor motor.

The utility model is realized by the following technical proposal, the utility model comprises an external rotor assembly part, an internal rotor assembly part and a stator assembly part; the outer rotor assembly part and the inner rotor assembly part both comprise iron cores and magnetic steels, and the magnetic steels are arranged in the iron cores; the inner rotor assembly part also comprises a motor shaft, and the outer rotor assembly part is connected with the motor shaft together; the stator assembly part comprises a stator winding left outer cover, a stator winding right outer cover, a stator core, a stator outer winding, a stator inner winding and intermediate partitions, the stator core is of an annular structure, the stator inner winding and the stator outer winding are respectively arranged on the inner side and the outer side of the stator core, a plurality of oil discharge holes are uniformly arranged on the stator core between the stator outer winding and the stator inner winding, and the two intermediate partitions are uniformly arranged in the middle of the inside of the stator winding right outer cover; the stator winding left outer cover, the stator core, the stator outer winding and the stator inner winding are enclosed to form a left oil cavity, the stator winding right outer cover, the stator core, the stator outer winding and the stator inner winding are enclosed to form a right oil cavity, and the right oil cavity is divided into an upper part and a lower part by the two middle partition plates; a stator assembly portion is disposed between the outer rotor assembly portion and the inner rotor assembly portion.

Further, the utility model discloses in, outside rotor assembly part still includes external rotor support, external rotor left end board, external rotor right side end board, and external rotor left end board, external rotor right side end board, external rotor iron core are the ring annular structure, and external rotor left end board, external rotor iron core, external rotor right side end board arrange in external rotor support after closely leaning on together in proper order.

Furthermore, in the utility model, the outer rotor magnetic steel of the outer rotor assembly part is uniformly arranged on the inner wall surface of the outer rotor iron core, and the outer rotor magnetic steel is arc-shaped; the left end plate of the outer rotor is the same as the right end plate of the outer rotor in structure.

Further, the utility model discloses in, inside rotor assembly part still includes inner rotor left backing plate, inner rotor right backing plate, lead screw lock nut, and the motor shaft is the step shaft structure, and inner rotor left backing plate, inner rotor right backing plate, inner rotor iron core, lead screw lock nut are the ring annular structure, and inner rotor left backing plate, inner rotor iron core, inner rotor right backing plate link together through lead screw lock nut and motor shaft after tightly leaning on together in proper order.

Furthermore, in the utility model, the inner rotor assembly part further comprises a retaining ring, a retaining ring groove, a pin key and a pin key groove, the retaining ring groove and the pin key groove are sequentially arranged at the left end of the motor shaft, and the outer rotor bracket is connected with the motor shaft through the retaining ring and the pin key which are respectively arranged in the retaining ring groove and the pin key groove; the right end of the motor shaft is provided with a torque output gear.

Further, the utility model discloses in, inner rotor left side backing plate, inner rotor right side backing plate structure are the same, and inner rotor magnet steel is the V style of calligraphy in the inner rotor iron core and arranges.

Further, the utility model discloses in, stator assembly part still including advancing oil pipe, play oil pipe, advance oil pipe, go out oil pipe and arrange respectively at the last lower extreme of stator winding right side dustcoat right side wall, advance oil pipe and right side oil pocket upper portion phase intercommunication, go out oil pipe and right side oil pocket lower part and be linked together.

Further, the utility model discloses in, stator assembly part still includes stiff end, cylinder stabilizer blade, screw hole, and cylinder stabilizer blade, screw hole equipartition are put at the stiff end, have cylinder stabilizer blade through hole on the right wall of stator winding right side dustcoat, and the cylinder stabilizer blade on the stiff end passes behind the cylinder stabilizer blade through hole on the right wall of stator winding right side dustcoat, is in the same place with the riveting of stator core.

Furthermore, in the present invention, the stator assembly is partially fixed to the motor housing through a threaded hole on the fixed end.

Further, the utility model discloses in, all have inside and outside two-layer cusp sealing strip, sealing strip structure and stator core structure phase-match on stator winding left side dustcoat, stator winding right side dustcoat.

Compared with the prior art, the utility model discloses have following beneficial effect and do: the utility model relates to a rationally, the structure is ingenious, can effectively solve the heat dissipation problem of birotor motor, improves the power of motor.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

FIG. 3 is a schematic view of the main components of the outer rotor assembly of the present invention;

FIG. 4 is a schematic view of the main components of the inner rotor assembly of the present invention;

FIG. 5 is a schematic view of the main components at the left end of the stator assembly of the present invention;

FIG. 6 is a schematic view of the main components at the right end of the stator assembly of the present invention;

fig. 7 is a schematic structural view of the oil drain hole of the present invention;

fig. 8 is a schematic structural view of a right outer cover of the stator winding of the present invention;

wherein: 1. the outer rotor support, 2, the outer rotor left end plate does not, 3, the outer rotor right end plate, 4, the outer rotor iron core, 5, outer rotor magnetic steel, 6, the motor shaft, 7, the inner rotor left base plate, 8, the inner rotor iron core, 9, the inner rotor magnetic steel, 10, the inner rotor right base plate, 11, the lead screw lock nut, 12, the retainer ring, 13, the retainer ring groove, 14, the pin key, 15, the pin key groove, 16, the stator winding left outer cover, 17, the stator winding right outer cover, 18, the stator iron core, 19, the stator outer winding, 20, the stator inner winding, 21, the fixed end, 22, the oil discharge hole, 23, the oil inlet pipe, 24, the oil outlet pipe, 25, the middle partition plate, 26, the cylindrical support leg, 27 and.

Detailed Description

The embodiments of the present invention will be described in detail with reference to the accompanying drawings, and the embodiments of the present invention are based on the technical solution of the present invention and provide detailed embodiments and specific operation processes, but the scope of the present invention is not limited to the following embodiments.

Example 1

Detailed description of the preferred embodimentsfigures 1-8, the present invention includes an outer rotor assembly portion, an inner rotor assembly portion, and a stator assembly portion; the outer rotor assembly part comprises an outer rotor support 1, an outer rotor left end plate 2, an outer rotor right end plate 3, an outer rotor iron core 4 and outer rotor magnetic steel 5, wherein the outer rotor left end plate 2, the outer rotor right end plate 3 and the outer rotor iron core 4 are all of circular ring structures, the outer rotor left end plate 2, the outer rotor iron core 4 and the outer rotor right end plate 3 are sequentially arranged in the outer rotor support 1 after being abutted together, the outer rotor magnetic steel 5 is arranged on the inner wall surface of the outer rotor iron core 4, and the outer rotor magnetic steel 5 is in an; the inner rotor assembly part comprises a motor shaft 6, an inner rotor left base plate 7, an inner rotor iron core 8, inner rotor magnetic steel 9, an inner rotor right base plate 10, a screw rod locking nut 11, a check ring 12, a check ring groove 13, a pin key 14 and a pin key groove 15, the motor shaft 6 is of a stepped shaft structure, the inner rotor left base plate 7, the inner rotor right base plate 10, the inner rotor iron core 8 and the screw rod locking nut 11 are all of annular structures, the inner rotor left base plate 7, the inner rotor iron core 8 and the inner rotor right base plate 10 are sequentially and tightly abutted together and then connected with the motor shaft 6 through the screw rod locking nut 11, and the inner rotor magnetic steel 9 is arranged in the inner rotor; the retainer ring groove 13 and the pin key groove 15 are sequentially arranged at the left end of the motor shaft 6, and the outer rotor bracket 1 is connected with the motor shaft 6 through the retainer ring 12 and the pin key 14 which are respectively arranged in the retainer ring groove 13 and the pin key groove 15; the stator assembly part comprises a stator winding left outer cover 16, a stator winding right outer cover 17, a stator iron core 18, a stator outer winding 19, a stator inner winding 20, a fixed end 21, oil discharge holes 22, an oil inlet pipe 23, an oil outlet pipe 24, a middle partition plate 25, a cylindrical support leg 26 and a threaded hole 27, wherein the stator outer winding 19, the stator inner winding 20 and the stator iron core 18 are connected together, the oil discharge holes 22 are uniformly arranged on the stator iron core 18 between the stator outer winding 19 and the stator inner winding 20, the middle partition plate 25 is arranged in the middle of the inside of the stator winding right outer cover 17, the oil inlet pipe 23 and the oil outlet pipe 24 are respectively arranged at the upper end and the lower end of the right side wall of the stator winding right outer cover 17, the cylindrical support legs 26 and the threaded holes 27 are uniformly arranged on the fixed end 21, a cylindrical support leg through hole is arranged on the right wall surface of the stator winding right outer cover 17, the stator winding left outer cover 16, the stator outer winding 19 and the stator inner winding 20 are assembled together and then arranged between the inner rotor assembly part and the outer rotor assembly part; a left oil cavity is enclosed by the stator winding left outer cover 16, the stator iron core 18, the stator outer winding 19 and the stator inner winding 20, a right oil cavity is enclosed by the stator winding right outer cover 17, the stator iron core 18, the stator outer winding 19 and the stator inner winding 20, the right oil cavity is divided into an upper part and a lower part by the middle partition plate 25, the upper part oil cavity is communicated with the oil inlet pipe 23, and the lower part oil cavity is communicated with the oil outlet pipe 24; the cylindrical support leg 26 on the fixed end 21 is riveted with the stator core 18 after penetrating through the cylindrical support leg through hole on the right wall surface of the stator winding right outer cover 17; the stator assembly part is fixed with the motor shell through a threaded hole 27 on the fixed end 21; the structure of the outer rotor left end plate 2 is the same as that of the outer rotor right end plate 3, and the structure of the inner rotor left base plate 7 is the same as that of the inner rotor right base plate 10; a torque output gear is arranged at the right end of the motor shaft 6; the left stator winding outer cover 16 and the right stator winding outer cover 17 are respectively provided with an inner layer tooth-shaped sealing strip and an outer layer tooth-shaped sealing strip, and the sealing strip structure is matched with the stator core 18 structure.

The utility model discloses an in the implementation, external rotor left end board 2, external rotor right end board 3, external rotor iron core 4, external rotor magnet steel 5 are fixed in external rotor support 1. The inner rotor left backing plate 7, the inner rotor iron core 8, the inner rotor magnetic steel 9, the inner rotor right backing plate 10, the lead screw locking nut 11 and the motor shaft 6 are connected together. The outer rotor support 1 is connected with the motor shaft 6 through a retainer ring 12 and a pin key 14 which are respectively arranged in a retainer ring groove 13 and a pin key groove 15, and the retainer ring 12 and the pin key 14 start fixing and positioning functions on the outer rotor support 1, so that the outer rotor support 1 and the motor shaft 6 can synchronously rotate. The stator winding left outer cover 16, the stator winding right outer cover 17, the stator core 18, the stator outer winding 19, the stator inner winding 20 and the fixed end 21 are assembled together and then fixed with the motor shell through the threaded hole 27 on the fixed end 21.

The middle partition plate 25 divides a right oil cavity enclosed by the stator winding right outer cover 17, the stator core 18, the stator outer winding 19 and the stator inner winding 20 into an upper part and a lower part, the upper part oil cavity is communicated with the oil inlet pipe 23, and the lower part oil cavity is communicated with the oil outlet pipe 24; the left oil cavity enclosed by the stator winding left outer cover 16, the stator core 18, the stator outer winding 19 and the stator inner winding 20 is an integral oil cavity and is not divided into an upper part and a lower part. Cooling oil firstly enters the upper part of the right oil cavity through an oil inlet pipe 23 and enters the left oil cavity through an oil discharge hole 22 at the upper end of the stator core 18; then the oil in the left oil chamber enters the lower part of the right oil chamber through an oil discharge hole 22 at the lower end of the stator core 18; finally, the oil in the lower portion of the right oil chamber is drained through the oil outlet pipe 24, thereby cooling the motor.

Example 2

In embodiment 1, the oil drain hole 22 has a circular structure, and in this embodiment, the oil drain hole 22 may have a rectangular structure.

In embodiment 1, the oil inlet pipe 23 and the oil outlet pipe 24 are respectively arranged at the upper and lower ends of the right side wall of the stator winding right housing 17; in this embodiment, the arrangement positions of the oil inlet pipe 23 and the oil outlet pipe 24 can be re-optimized according to the space limitation, as long as the upper oil chamber is communicated with the oil inlet pipe 23 and the lower oil chamber is communicated with the oil outlet pipe 24.

In embodiment 1, two middle partition plates 25 are both arranged in the middle of the inside of the stator winding right outer cover 17, and the circumferential distribution angles of the upper oil cavity and the lower oil cavity are not limited; according to computational analysis of hydrodynamics and heat transfer, the circumferential distribution angle of the upper oil cavity can be limited to 190 degrees in the embodiment, namely the upper oil cavity is large and the lower oil cavity is small.

The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention.

Claims

1. A dual rotor direct cooling motor comprises an outer rotor assembly part, an inner rotor assembly part and a stator assembly part;

the external rotor assembly part and the internal rotor assembly part both comprise iron cores and magnetic steels, and the magnetic steels are arranged in the iron cores;

the inner rotor assembly part also comprises a motor shaft, and the outer rotor assembly part is connected with the motor shaft together;

the stator assembly part comprises a stator winding left outer cover, a stator winding right outer cover, a stator iron core, a stator outer winding, a stator inner winding and intermediate partitions, the stator iron core is of an annular structure, the stator inner winding and the stator outer winding are respectively arranged on the inner side and the outer side of the stator iron core, a plurality of oil discharge holes are uniformly arranged on the stator iron core between the stator outer winding and the stator inner winding, and the two intermediate partitions are uniformly arranged in the middle of the inside of the stator winding right outer cover; the stator winding left outer cover, the stator core, the stator outer winding and the stator inner winding are enclosed to form a left oil cavity, the stator winding right outer cover, the stator core, the stator outer winding and the stator inner winding are enclosed to form a right oil cavity, and the right oil cavity is divided into an upper part and a lower part by the two middle partition plates;

the stator assembly portion is disposed between the outer rotor assembly portion and the inner rotor assembly portion.

2. The dual-rotor direct-cooling motor according to claim 1, wherein the outer rotor assembly further comprises an outer rotor support, an outer rotor left end plate, and an outer rotor right end plate, the outer rotor left end plate, the outer rotor right end plate, and the outer rotor core are all in a circular structure, and the outer rotor left end plate, the outer rotor core, and the outer rotor right end plate are arranged in the outer rotor support after being sequentially abutted together.

3. The dual-rotor direct-cooling motor according to claim 2, wherein the outer rotor magnetic steel of the outer rotor assembly portion is uniformly arranged on an inner wall surface of the outer rotor core, and the outer rotor magnetic steel is arc-shaped; the left end plate of the outer rotor is the same as the right end plate of the outer rotor in structure.

4. The dual-rotor direct cooling motor according to claim 1, wherein the inner rotor assembly further comprises an inner rotor left backing plate, an inner rotor right backing plate, and a lead screw locking nut, the motor shaft is of a stepped shaft structure, the inner rotor left backing plate, the inner rotor right backing plate, the inner rotor core, and the lead screw locking nut are all of a circular structure, and the inner rotor left backing plate, the inner rotor core, and the inner rotor right backing plate are sequentially abutted together and then connected with the motor shaft through the lead screw locking nut.

5. The dual-rotor direct cooling motor according to claim 4, wherein the inner rotor assembly further comprises a retaining ring, a retaining ring groove, a pin key, and a pin key groove, the retaining ring groove and the pin key groove are sequentially disposed at the left end of the motor shaft, and the outer rotor bracket is connected with the motor shaft through the retaining ring and the pin key respectively disposed in the retaining ring groove and the pin key groove; the right end of the motor shaft is provided with a torque output gear.

6. The dual-rotor direct-cooling motor of claim 5, wherein the inner rotor left base plate and the inner rotor right base plate have the same structure, and the inner rotor magnetic steel is arranged in a V shape in the inner rotor core.

7. The dual-rotor direct cooling motor as claimed in claim 1, wherein the stator assembly further comprises an oil inlet pipe and an oil outlet pipe, the oil inlet pipe and the oil outlet pipe are respectively disposed at the upper and lower ends of the right side wall of the right housing of the stator winding, the oil inlet pipe is communicated with the upper portion of the right oil chamber, and the oil outlet pipe is communicated with the lower portion of the right oil chamber.

8. The dual-rotor direct cooling motor according to claim 7, wherein the stator assembly further comprises a fixed end, a cylindrical leg and a threaded hole, the cylindrical leg and the threaded hole are both disposed on the fixed end, the right wall surface of the right outer cover of the stator winding is provided with a cylindrical leg through hole, and the cylindrical leg on the fixed end is riveted with the stator core after passing through the cylindrical leg through hole on the right wall surface of the right outer cover of the stator winding.

9. The dual rotor direct cooling electric machine of claim 8, wherein said stator assembly portion is secured to the machine housing by threaded holes in the securing end.

10. The dual-rotor direct cooling motor according to claim 9, wherein the stator winding left outer cover and the stator winding right outer cover are respectively provided with an inner layer tooth-shaped sealing strip and an outer layer tooth-shaped sealing strip, and the sealing strip structure is matched with the stator core structure.