Hydraulic oil way of hybrid power gearbox

Abstract

The invention discloses a hybrid power gearbox hydraulic oil circuit, which belongs to the technical field of automobile parts, and comprises an EM2 motor stator and a rear cover arranged on the outer side of the EM2 motor stator, a transmission shell is arranged on the inner side of the rear cover, the EM2 motor stator is arranged on the inner wall of the transmission shell, a rotor bracket is arranged between the rear cover and the transmission shell, and a rotor is arranged on the rotor bracket. An EM2 motor rotor is installed on the rotor support, the EM2 motor rotor and an EM2 motor stator form a motor EM2 through installation and matching of parts, according to the hydraulic oil way of the hybrid power gearbox, the size of the throttling hole is set, the lubricating flow is reasonably distributed, it is guaranteed that each lubricating point can obtain enough lubricating oil, meanwhile, through structural arrangement of the parts, the lubricating oil flow is reasonably distributed, and the reliability of the hydraulic oil way is improved. According to the lubricating oil circuit system, reliable operation of the lubricating oil circuit system is guaranteed, all cooling and lubricating points of the lubricating oil circuit are fully cooled and lubricated by setting reasonable pressure and utilizing the effect of centrifugal force, and the structural arrangement of the whole hybrid gearbox is more reasonable.

Description

Technical Field

[0001] The invention relates to the field of automobile parts, and in particular to a hybrid power transmission hydraulic oil circuit. Background Art

[0002] With the increasing popularity of new energy technologies in automobiles, how to continuously improve automobile fuel efficiency and reduce automobile fuel consumption has become an important means to improve automobile market competitiveness. In the transmission structure of hybrid vehicles, the general DHT (hybrid-specific transmission) hybrid-specific hydraulic system is different from the P-architecture hybrid technology. Its advantage lies in that through the coordination of dual motors, it has multiple gears for different working conditions, which can increase the operating efficiency of the engine. At the same time, the transmission is compactly arranged and low-cost, and has obvious advantages in efficiency and fuel saving.

[0003] During the use of traditional hybrid transmissions, various parts will wear out, which will reduce the life of the transmission. In order to address the wear of parts, lubricating oil is installed inside the traditional transmission. However, during the use of traditional transmission lubricating oil, the oil circuit distribution is not reasonable. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a hybrid power transmission hydraulic oil circuit, which overcomes the deficiencies in the prior art and solves the problem that various parts of a conventional hybrid power transmission will wear out during use, thereby reducing the life of the transmission. In view of the wear of parts, lubricating oil is provided inside a conventional transmission, but the oil circuit distribution of the conventional transmission lubricating oil is not reasonable during use.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a hybrid transmission hydraulic oil circuit, comprising an EM2 motor stator and a rear cover arranged on the outside of the EM2 motor stator, a transmission housing is installed on the inner side of the rear cover, the EM2 motor stator is installed on the inner wall of the transmission housing, a rotor bracket is arranged between the rear cover and the transmission housing, an EM2 motor rotor is installed on the rotor bracket, the EM2 motor rotor and the EM2 motor stator constitute the motor EM2 through the installation and matching of parts, a lubrication oil supply port and a clutch oil supply port are arranged on the inner wall of the rear cover, a support plate is installed on the inner wall of the rear cover, a small lubrication oil hole and a large lubrication oil hole are opened on the inner wall of the support plate, an EM2 drive shaft is installed on the outer wall of the support plate, The rotor bracket is installed on the outside of the EM2 drive shaft, the rear oil guide pipe is installed on the inner side of the support plate, the front oil guide pipe is installed on the outer wall of the rear oil guide pipe, the input shaft body is installed on the outer wall of the EM2 drive shaft, the outer wall of the input shaft body is installed with a centering shaft head, the outer wall of the centering shaft head is provided with a clutch housing, the inner wall of the clutch housing is provided with a clutch lubricating oil hole, the inner wall of the input shaft body is provided with a clutch oil inlet hole, the inner walls of the EM2 drive shaft, the centering shaft head and the input shaft body are respectively provided with throttling holes, the inner wall of the rear cover is installed with a retaining ring 2, one side of the retaining ring 2 is clamped and installed with a resolver rotor, the outer wall of the resolver rotor is installed with a resolver stator, and a needle bearing is provided between the centering shaft head and the input shaft body.

[0006] By adopting the above technical solution, when in use, the lubrication flow rate is reasonably distributed through the setting of the throttling hole size of the hydraulic oil circuit of the hybrid transmission, ensuring that each lubrication point can obtain sufficient lubricating oil. At the same time, through the structural arrangement of components, it is ensured that the lubrication oil circuit system can operate reliably. The lubrication oil circuit sets a reasonable pressure and utilizes the effect of centrifugal force to ensure that each cooling and lubrication point is fully cooled and lubricated, making the structural arrangement of the entire hybrid transmission more reasonable.

[0007] As a preferred technical solution of the present invention, an O-ring 1 is arranged between the support plate and the rear cover, a dynamic seal 1 is arranged between the support plate and the EM2 drive shaft, a dynamic seal 2 is arranged between the support plate and the rear oil guide pipe, a needle bearing 1 is arranged between the support plate and the rear oil guide pipe, a retaining ring 1 is installed on the inner wall of the rear cover, and the clamping end of the support plate is located between the retaining ring 1 and the rear cover.

[0008] By adopting the above technical solution, the O-ring 1, the dynamic seal 2 and the dynamic seal 1 can play a sealing role, and the needle bearing 1 can facilitate the rotation between the support plate and the rear oil guide pipe.

[0009] As a preferred technical solution of the present invention, a deep groove ball bearing 1 is arranged between the rear cover and the EM2 drive shaft, a deep groove ball bearing 3 is arranged between the transmission housing and the EM2 drive shaft, a dynamic seal 3 is arranged between the EM2 drive shaft and the input shaft body, and a needle bearing 4 is arranged between the EM2 drive shaft and the input shaft body, a thrust bearing 3 and a sleeve are arranged at the port of the EM2 drive shaft, an input shaft gear 2 is arranged on one side of the sleeve, and the input shaft gear 2 is installed on the outer wall of the input shaft body.

[0010] By adopting the above technical solution, the deep groove ball bearing 1 can facilitate the rotation between the EM2 drive shaft and the rear cover, and the deep groove ball bearing 3 can facilitate the rotation between the transmission housing and the EM2 drive shaft, and the dynamic seal 3 can play a sealing role, and the setting of the needle bearing 4 and the thrust bearing 3 can facilitate the rotation of the input shaft body and the EM2 drive shaft respectively.

[0011] As a preferred technical solution of the present invention, a needle roller bearing 3 and an input shaft bushing are installed on the inner side of the input shaft gear 2, and the inner side of the needle roller bearing 3 is installed with the input shaft body.

[0012] By adopting the above technical solution, the input shaft gear 2 and the input shaft body can be easily rotated through the needle bearing 3 and the input shaft bushing.

[0013] As a preferred technical solution of the present invention, a synchronizer gear hub is installed on the outer wall of the input shaft body, a synchronizer ring is installed inside the synchronizer gear hub, and a coupling tooth is installed at the port of the synchronizer gear hub.

[0014] By adopting the above technical solution, the synchronizer ring can be installed through the synchronizer gear hub, and the synchronizer gear hub can fix the coupling teeth.

[0015] As a preferred technical solution of the present invention, an input shaft gear 1 is installed on the outer wall of the input shaft body located on the side of the coupling tooth, and a needle bearing 2 is arranged between the input shaft gear 1 and the input shaft body.

[0016] By adopting the above technical solution, the rotation between the input shaft body and the input shaft gear 1 can be facilitated by the needle bearing 2 .

[0017] As a preferred technical solution of the present invention, a working pin baffle is installed on the outer wall of the input shaft body located on one side of the input shaft gear 1, a sealing ring is arranged between the working pin baffle and the input shaft body, a clutch piston is installed on the inner side of the working pin baffle, an outer D-ring 2 is arranged on the inner wall of the working pin baffle to abut against the clutch piston, an inner D-ring 1 is arranged in the inner wall of the clutch piston to abut against the input shaft body, a gear 4 is arranged on the inner side of the clutch piston located above the inner D-ring 1, an outer D-ring 1 is arranged in the inner wall of the gear 4 to abut against the inner wall of the clutch piston, a clutch spring is fixedly installed on the inner wall of the gear 4, a clutch baffle is installed on the other side of the clutch spring, the clutch baffle is installed with the clutch piston, and a push rod is slidably installed in the inner wall of the gear 4, and the push rod corresponds to the clutch baffle.

[0018] By adopting the above technical solution, the outer D-ring 2, the sealing ring, the inner D-ring 1 and the outer D-ring 1 can seal the working pin baffle and the clutch piston, and the spring can reset the clutch baffle.

[0019] As a preferred technical solution of the present invention, a deep groove ball bearing 2 is arranged between the clutch housing and the centering shaft head, a lip seal is arranged between the clutch housing and the inner wall outside the centering shaft head, and a thrust bearing 1 is arranged between the centering shaft head and the gear 4.

[0020] By adopting the above technical solution, the lip seal can seal the centering shaft head and the clutch housing, and the deep groove ball bearing 2 can facilitate the rotation of the clutch housing and the centering shaft head.

[0021] As a preferred technical solution of the present invention, a clutch outer hub is arranged in the inner wall of the clutch housing, a steel plate is arranged on the inner side of the clutch outer hub, a friction plate is arranged on the inner side of the steel plate, a clutch inner hub is arranged on the inner wall of the friction plate, and an oil collecting pan is installed on the outer side of the gear 4, and the oil collecting pan corresponds to the position of the deep groove ball bearing 2.

[0022] By adopting the above technical solution, the arrangement of the clutch outer hub can serve to store and install the steel plate, the friction plate and the clutch inner hub, and the oil collecting pan can serve to collect oil.

[0023] As a preferred technical solution of the present invention, positioning sleeves are respectively installed on the inner walls between the transmission housing and the clutch housing, and the output shaft is installed on the outer walls of the two positioning sleeves. Tapered bearings 2 and tapered bearings 1 are respectively arranged between the clutch housing and the transmission housing at both ends of the output shaft, and gears 3, 2 and 1 are installed on the outer wall of the output shaft. The gears 3 and 4 are meshed with each other, and the gears 2 and the input shaft gears 2 are meshed with each other.

[0024] By adopting the above technical solution, the positioning sleeve can be used to position the output shaft, and the output shaft can fix gears 2, 3 and 1, and the arrangement of tapered bearings 1 and 2 can facilitate the rotation of the output shaft.

[0025] Compared with the prior art, the present invention has the following beneficial effects: The present invention reasonably distributes the lubrication flow rate by setting the size of the throttling hole in the hybrid transmission hydraulic oil circuit, thereby ensuring that each lubrication point can obtain sufficient lubrication oil. At the same time, the structural arrangement of parts and components ensures that the lubrication oil circuit system can operate reliably. The lubrication oil circuit sets a reasonable pressure and utilizes the effect of centrifugal force to ensure that each cooling and lubrication point is fully cooled and lubricated, making the structural arrangement of the entire hybrid transmission more reasonable. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a front cross-sectional view in the present invention.

[0027] Description of reference numerals: 1. EM2 motor stator; 2. EM2 motor rotor; 3. rotor bracket; 4. rear cover; 5. deep groove ball bearing 1; 6. O-ring 1; 7. support plate; 8. EM2 drive shaft; 9. dynamic seal 1; 10. rear oil guide pipe; 11. dynamic seal 2; 12. needle roller bearing 1; 13. snap ring 1; 14. snap ring 2; 15. resolver rotor; 16. resolver stator; 17. positioning sleeve; 18. transmission housing; 19. tapered bearing 1; 20. gear 1; 21. gear 2; 22. gear 3; 23. tapered bearing 2; 24. output shaft; 25. clutch housing; 26. clutch outer hub; 27. steel plate; 28. friction plate; 29. ​​clutch inner hub; 30. oil collecting pan; 31. deep groove ball bearing 2; 32. lip seal; 33. needle roller bearing; 34. centering shaft head; 35. input Shaft body; 36, thrust bearing 1; 37, inner D-ring 1; 38, clutch piston; 39, outer D-ring 1; 40, clutch spring; 41, push rod; 42, gear 4; 43, outer D-ring 2; 44, clutch baffle; 45, working pin baffle; 46, sealing ring; 47, needle roller bearing 2; 48, input shaft gear 1; 49, coupling gear; 50, synchronizer ring; 51, synchronizer gear hub; 52, input shaft bushing; 53, front guide oil pipe; 54, needle roller bearing 3; 55, input shaft gear 2; 56, bushing; 57, thrust bearing 3; 58, needle roller bearing 4; 59, dynamic seal 3; 60, deep groove ball bearing 3; A, small lubricating oil hole; B, lubricating oil supply port; C, large lubricating oil hole; D, clutch oil supply port; E, clutch lubricating oil hole; F, clutch oil inlet hole; H, throttle hole. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1A hybrid transmission hydraulic oil circuit comprises an EM2 motor stator 1 and a rear cover 4 arranged on the outside of the EM2 motor stator 1, a transmission housing 18 is installed on the inner side of the rear cover 4, the EM2 motor stator 1 is installed on the inner wall of the transmission housing 18, a rotor bracket 3 is arranged between the rear cover 4 and the transmission housing 18, an EM2 motor rotor 2 is installed on the rotor bracket 3, the EM2 motor rotor 2 is installed with the EM2 motor stator 1, a lubrication oil supply port B and a clutch oil supply port D are arranged on the inner wall of the rear cover 4, a support plate 7 is installed on the inner wall of the rear cover 4, a small lubrication oil hole A and a large lubrication oil hole C are opened on the inner wall of the support plate 7, and a clutch oil supply port B and a clutch oil supply port D are arranged on the outer wall of the support plate 7. There is an EM2 drive shaft 8, a rotor bracket 3 is installed on the outside of the EM2 drive shaft 8, a rear oil guide pipe 10 is installed on the inner side of the support plate 7, a front oil guide pipe 53 is installed on the outer wall of the rear oil guide pipe 10, an input shaft body 35 is installed on the outer wall of the EM2 drive shaft 8, a centering shaft head 34 is installed on the outer wall of the input shaft body 35, a clutch housing 25 is arranged on the outer wall of the centering shaft head 34, a clutch lubricating oil hole E is opened on the inner wall of the clutch housing 25, a clutch oil inlet hole F is opened on the inner wall of the input shaft body 35, a throttle hole H is opened in the inner wall of the EM2 drive shaft 8, the centering shaft head 34 and the input shaft body 35, respectively, and a retaining ring 2 is installed on the inner wall of the rear cover 4 14, a resolver rotor 15 is mounted on one side of the retaining ring 2 14, a resolver stator 16 is mounted on the outer wall of the resolver rotor 15, a needle bearing 33 is arranged between the centering shaft head 34 and the input shaft body 35, and the hybrid gearbox hydraulic oil circuit is reasonably distributed through the setting of the throttle hole H diameter, ensuring that each lubrication point can get enough lubricating oil, and at the same time, through the structural arrangement of the parts, the lubrication oil circuit system is guaranteed to operate reliably, and the lubrication oil circuit is set by setting a reasonable pressure and utilizing the effect of centrifugal force, so that each cooling and lubrication point is fully cooled and lubricated, so that the structural arrangement of the entire hybrid gearbox is more reasonable, and the throttle hole H is provided with H1, H2, H3, H4, H5 and H6, and H1 is arranged on the inner wall of the EM2 drive shaft 8, H2-H5 are arranged on the inner wall of the input shaft body 35, and H6 is arranged on the inner wall of the centering shaft head 34.

[0030] For details, see Figure 1, a deep groove ball bearing 15 is arranged between the rear cover 4 and the EM2 drive shaft 8, a deep groove ball bearing 360 is arranged between the transmission housing 18 and the EM2 drive shaft 8, a dynamic seal 359 is arranged between the EM2 drive shaft 8 and the input shaft body 35, and a needle bearing 458 is arranged between the EM2 drive shaft 8 and the input shaft body 35, a thrust bearing 357 and a sleeve 56 are arranged at the port of the EM2 drive shaft 8, an input shaft gear 255 is arranged on one side of the sleeve 56, and the input shaft gear 255 is installed on the outer wall of the input shaft body 35, and the deep groove ball bearing 15 can facilitate the rotation between the EM2 drive shaft 8 and the rear cover 4, and the deep groove ball bearing 360 can facilitate the rotation between the transmission housing 18 and the EM2 drive shaft 8, and the dynamic seal 359 can play a sealing role, and the arrangement of the needle bearing 458 and the thrust bearing 357 can facilitate the rotation of the input shaft body 35 and the EM2 drive shaft 8 respectively; A needle bearing 354 and an input shaft bushing 52 are installed on the inner side of the input shaft gear 255, and the inner side of the needle bearing 354 is installed with the input shaft body 35. The needle bearing 354 and the input shaft bushing 52 enable the input shaft gear 255 and the input shaft body 35 to rotate. A synchronizer gear hub 51 is installed on the outer wall of the input shaft body 35, and a synchronizer ring 50 is installed inside the synchronizer gear hub 51, and a coupling tooth 49 is installed at the port of the synchronizer gear hub 51. The synchronizer ring 50 can be installed through the synchronizer gear hub 51, and the synchronizer gear hub 51 can fix the coupling tooth 49.

[0031] For details, see Figure 1An input shaft gear 148 is installed on the outer wall of the input shaft body 35 located on the side of the coupling tooth 49, and a needle bearing 247 is arranged between the input shaft gear 148 and the input shaft body 35. The needle bearing 247 can facilitate the rotation of the input shaft body 35 and the input shaft gear 148. A working pin baffle 45 is installed on the outer wall of the input shaft body 35 located on the side of the input shaft gear 148. A sealing ring 46 is arranged between the working pin baffle 45 and the input shaft body 35. A clutch piston 38 is installed on the inner side of the working pin baffle 45. An outer D-ring 243 is arranged on the inner wall of the working pin baffle 45 to abut against the clutch piston 38. An inner D-ring 137 is arranged in the inner wall of the clutch piston 38 to abut against the input shaft body 35. A gear 442 is arranged on the inner side of the clutch piston 38 above the inner D-ring 137. An outer D-ring 139 is provided in the inner wall of the gear 442 to abut against the inner wall of the clutch piston 38. A clutch spring 40 is fixedly installed on the inner wall of the gear 442. A clutch baffle 44 is installed on the other side of the clutch spring 40. The clutch baffle 44 is installed with the clutch piston 38, and a push rod 41 is slidably installed in the inner wall of the gear 442, and the push rod 41 corresponds to the clutch baffle 44. The outer D-ring 243, the sealing ring 46, the inner D-ring 137 and the outer D-ring 139 can seal the working pin baffle 45 and the clutch piston 40, and the spring can reset the clutch baffle 44.

[0032] For details, see Figure 1 A deep groove ball bearing 231 is arranged between the clutch housing 25 and the centering shaft head 34, and a lip seal 32 is arranged between the inner wall of the clutch housing 25 and the outer side of the centering shaft head 34, and a thrust bearing 136 is arranged between the centering shaft head 34 and the gear 442, and the lip seal 32 can seal the centering shaft head 34 and the clutch housing 25, and the deep groove ball bearing 231 can facilitate the rotation of the clutch housing 25 and the centering shaft head 34, a clutch outer hub 26 is arranged in the inner wall of the clutch housing 25, a steel sheet 27 is arranged on the inner side of the clutch outer hub 26, a friction sheet 28 is arranged on the inner side of the steel sheet 27, and a clutch inner hub 29 is arranged on the inner wall of the friction sheet 28, and an oil collecting pan 30 is installed on the outer side of the gear 442, and the oil collecting pan 30 and the deep groove ball bearing 231 are arranged on the inner wall of the clutch housing 25. 31, the clutch outer hub 26 can be used to store and install the steel plate 27, the friction plate 28, and the clutch inner hub 29, and the oil collecting pan 30 can collect oil; The inner walls between the transmission housing 18 and the clutch housing 25 are respectively installed with positioning sleeves 17, and the outer walls of the two positioning sleeves 17 are installed with the output shaft 24. The two ends of the output shaft 24 are respectively provided with tapered bearings 223 and tapered bearings 119 between the clutch housing 25 and the transmission housing 18. The outer wall of the output shaft 24 is installed with gears 322, 221 and 120. The gears 322 and 442 are meshed with each other, and the gears 221 and the input shaft gears 255 are meshed with each other. The positioning sleeves 17 can be used to position the output shaft 24, and the output shaft 24 can fix the gears 221, 322 and 120. The provision of tapered bearings 119 and tapered bearings 223 can facilitate the rotation of the output shaft 24.

[0033] For details, see Figure 1 An O-ring 16 is provided between the support plate 7 and the rear cover 4, a dynamic seal 19 is provided between the support plate 7 and the EM2 drive shaft 8, a dynamic seal 211 is provided between the support plate 7 and the rear oil guide pipe 10, a needle bearing 112 is provided between the support plate 7 and the rear oil guide pipe 10, a snap ring 113 is installed on the inner wall of the rear cover 4, and the snap-connecting end of the support plate 7 is located between the snap ring 113 and the rear cover 4. The O-ring 16, the dynamic seal 211 and the dynamic seal 19 can play a sealing role, and the needle bearing 112 can facilitate the rotation between the support plate 7 and the rear oil guide pipe 10.

[0034] Working principle: The lubricating oil is supplied by the hybrid transmission oil supply system. The oil supply system usually takes several forms: a mechanical pump, a combination of a mechanical pump and an electronic pump, a single electronic pump, or two electronic pumps. The pump source is used to supply oil to the transmission hydraulic system. In this lubricating oil circuit system, the electronic pump supplies oil to the lubrication cooling system.

[0035] Lubrication and cooling oil circuit on the input shaft: The lubricating cooling oil supplied by the pump source passes through the oil channel set on the rear cover 4 and reaches the lubricating oil supply port B. After flowing through the lubricating oil supply port B, it reaches the cavity composed of the part rear cover 4, O-ring 16, and support plate 7. Among them, the part O-ring 16 has a certain compression rate and filling rate, which plays a sealing role to prevent the cooling lubricating oil from leaking through the gap between the rear cover 4 and the O-ring 16. Since the cooling lubricating oil has a certain pressure, in order to prevent the part support plate 7 from moving in the axial direction under the action of the liquid pressure, the part retaining ring 113 plays a fixing role to keep the part support plate 7 in the installation position. The part support plate 7 is provided with two lubricating cooling ports, one of which is a small lubricating oil hole A. After the oil passes through the small lubricating oil hole A, it reaches the part deep groove ball bearing 15, the part support plate 7, the part EM2 drive shaft 8, and the part dynamic seal 1 9, and then lubricate the steel ball of the deep groove ball 15 of the part. The direction of the lubricating oil is shown in the figure. The green arrows in the figure are all lubricating cooling oil circuits, and the red oil circuit is the clutch working oil circuit. After the cooling lubricating oil passes through the deep groove ball bearing 15 of the part, the cooling lubricating oil performs centrifugal motion under the action of centrifugal force, and a part of the oil passes through the circumferential holes set on the part rotor bracket 3 to cool the EM2 motor rotor 2, and a part of the oil passes through the axial aperture on the part rotor bracket 3 to cool the part rotary rotor 15 and the part rotary stator 16. After a part of the oil passes through the gap between the part rotor bracket 3 and the part rotary stator 16, it splashes onto the part EM2 motor stator 1 under the action of centrifugal force to cool the part EM2 motor stator 1. The flow direction of the oil is shown by the green arrow in the figure.

[0036] Another cooling and lubrication port provided on the part support plate 7 is a large lubricating oil hole C. After the oil passes through the large lubricating oil hole C, a part of the oil is used to lubricate the part needle bearing 1 12, and the other part of the oil passes through the oil channel formed by the part rear oil guide pipe 10 and the part EM2 drive shaft 8 to continuously supply oil for lubrication and cooling of subsequent parts. The part EM2 drive shaft 8 is provided with a radial throttle hole H1 throttle hole numbered H, and the multiple groups of throttle holes are H1-H6 respectively. As shown in the figure, under the action of lubrication pressure and centrifugal force, a part of the cooling lubricating oil passes through the radial throttle hole H1 provided on the part EM2 drive shaft 8 and flows to the oblique oil hole provided on the part rotor bracket 3, and a part of it is used to lubricate the part deep groove ball bearing 3 60, and a part of it passes through the oblique oil hole to cool the part rotary transformer rotor 15 and the part rotary transformer stator 16. The oil flow direction is shown by the green arrow in the figure, and passes through the part deep groove ball bearing 3 60. The oil behind the rotary transformer rotor 15 and the rotary transformer stator 16 returns to the oil tank and enters a continuous circulation cooling process under the action of the pump.

[0037] In addition to the oil passing through the radial throttle hole H1 on the part EM2 drive shaft 8, the other part of the oil passing through the large lubricating oil hole C is dry lubricating oil. It passes through the oil channel formed by the rear oil guide pipe 10 of the part and the part EM2 drive shaft 8, and continues to supply oil to the rear end parts. The cooling lubricating oil reaches the connection between the part EM2 drive shaft 8 and the part input shaft body 35. The part EM2 drive shaft 8 is provided with an oil channel in the axial direction of the connection. After the oil passes through the oil channel, a part of the oil passes through the radial throttle hole H2 set on the part input shaft body 35 to lubricate the part needle bearing 458 under the action of lubrication pressure and centrifugal force. After passing through the part needle bearing 58, the oil lubricates the part thrust bearing 357. After passing through the part thrust bearing 357, the oil returns to the oil tank. The part input shaft body 35 is provided with an annular groove, and the part dynamic seal 359 is placed therein, which is connected with the part dynamic seal 1 9, under the action of oil pressure and centrifugal force, plays a sealing role, ensuring the reasonable distribution of subsequent lubricating and cooling oil. The rear oil guide pipe 10 of the part and the front oil guide pipe 53 of the part are interference fit, ensuring that the lubricating oil can be stable, reliable and leak-free during oil supply and circulation.

[0038] The cooling lubricating oil continues to supply cooling and lubrication to the rear-end parts under the action of pressure. When the cooling lubricating oil reaches the hole H3, the dry lubricating oil continues to supply oil to the rear-end parts. Under the action of pressure and centrifugal force, a part of the cooling lubricating oil flows through the hole H3 set on the input shaft body 35 of the part to the oil hole set on the input shaft bushing 52 of the part, and then lubricates the needle roller bearing 3 54 of the part. There is a gap on 54. After passing through the gap between the needle rollers, the oil flows to both ends respectively. The left end passes through the gap between the part sleeve 56 and the part input shaft gear 55, and circulates into the oil tank under the action of centrifugal force. The right end passes through the radial aperture set on the part synchronizer gear hub 51 and flows to the cavity composed of the part coupling tooth 49 and the part synchronizer gear hub 51. After passing through the cavity, the oil flows to the gap between the part coupling tooth 49 and the part synchronizer ring 50 under the action of centrifugal force, cooling and lubricating the working surfaces of the two parts, so that the two parts work in a reasonable temperature range when they are in relative motion. After passing through the gap, the oil circulates into the oil tank under the action of centrifugal force.

[0039] The dry line lubricating and cooling oil continues to supply oil to the rear end parts. When the lubricating and cooling oil reaches hole H4, under the action of centrifugal force and liquid pressure, the oil enters hole H4 set on the part input shaft body 35 to lubricate the part needle bearing 2 47. There is a gap between the rollers of the part needle bearing 2 47. After passing through its rotor, the oil is divided into left and right paths. The left oil path passes through the part synchronizer gear hub 51 to cool and lubricate the mating surface of the part coupling tooth 49 and the part synchronizer ring 50. The right lubricating oil passes through the gap set on the right side of the part input shaft gear 48 and returns to the oil tank under the action of centrifugal force to enter a continuous circulation oil supply.

[0040] The front oil pipe 53 of the part and the input shaft body 35 of the part are interference fit, which ensures that the oil channel formed therebetween can be well sealed without leakage. After the dry lubricating oil flows through the hole H4, it continues to flow to the right end under the action of the lubricating pressure, and flows through the throttle hole H5 set on the input shaft body 35 of the part. Under the action of centrifugal force, a part of the oil flows into the balancing oil chamber composed of the input shaft body 35 of the part, the inner D-ring 1 37 of the part, the clutch piston 38 of the part, and the outer D-ring 1 39 of the part, thereby generating a balancing force. The main function of this part of the hydraulic oil is to ensure that the clutch is in a disengaged state, and to ensure that the friction plate 28 and the steel plate 27 will not be combined, thereby ensuring that the friction plate 28 and the steel plate 27 will not be burned due to the relative sliding friction between the friction plate 28 and the steel plate 27 due to the pressure generated at the working oil chamber end due to the oil in the clutch working oil chamber not being completely drained.

[0041] Under the action of pressure, the lubricating cooling oil flows through the hole H5, continues to flow to the right end, passes through the oil channel inside the part input shaft body 35, and reaches the cavity formed by the part input shaft body 35 and the part centering shaft head 34. After a part of the hydraulic oil passes through the hole H6 set on the part centering shaft head 34, under the action of centrifugal force, it flows to the cavity composed of the part centering shaft head 34, the part lip seal 32, and the part clutch housing 25, and then flows through the gap between the part deep groove ball bearing 231 and the part clutch housing 25 to lubricate the part deep groove ball bearing 231. Because the part deep groove ball bearing 231 is a deep groove ball bearing with a large gap, the oil after passing through the part deep groove ball bearing 231 flows to the part clutch inner hub 29 and the part deep groove ball bearing 231 under the action of centrifugal force. 31. After the oil passes through the gap between the clutch housing 25, the oil passes through the orifice set on the clutch inner hub 29. When the clutch is separated or sliding, the oil enters the gap between the steel plate 27 and the friction plate 28 to cool and lubricate the friction plate 28 and the steel plate 27. When the clutch is engaged or locked, the oil passes through the groove oil channel set in the friction plate 28 to cool the friction plate 28 and the steel plate 27. Another part of the oil lubricates the needle roller bearing 33 through the oblique gap between the input shaft body 35 and the centering shaft head 34. Under the action of liquid pressure and centrifugal force, the cooling lubricating oil flows through the cavity gap composed of the gear 4 42, the centering shaft head 34 and the input shaft body 35 to lubricate the thrust bearing 1 36. After passing through the thrust bearing 1 36, the oil changes direction under the obstruction of the oil collecting pan 30, passes through the hole set in the clutch inner hub 29, and passes through the deep groove ball bearing 2 The cooling and lubricating oil of 31 is gathered into one path, and together they cool and lubricate the steel plate 27 and friction plate 28 on the clutch. After that, the oil enters the oil tank for a continuous cooling and lubrication cycle. The oil flow direction is shown by the green arrow in the figure.

[0042] Cooling and lubrication oil circuit on the output shaft: The cooling lubricating oil supplied by the pump source passes through the oil channel arranged inside the hybrid transmission and reaches the clutch lubricating oil hole E arranged on the clutch housing 25. The lubricating cooling oil reaches the clutch lubricating oil hole E and reaches the cavity of the output shaft 24 under the action of the lubricating pressure. A part of the lubricating cooling oil passes through the gap between the output shaft 24 and the clutch housing 25 and lubricates the tapered bearing 223 under the action of centrifugal force. After passing through the tapered bearing 223, the oil returns to the oil tank and enters the circulation. A part of the oil passes through the gap between the positioning sleeve 17 and the transmission housing 18 to lubricate the tapered bearing 119. After passing through the tapered bearing 119, the cooling lubricating oil returns to the oil tank and enters the circulation. The flow direction of the lubricating oil is shown by the green arrow in the figure.

[0043] Splash lubrication of gears: The meshing of part gear 1 20 with the gear on part EM2 drive shaft 8 adopts splash lubrication, the meshing of part gear 2 21 with part input shaft gear 2 55 adopts splash lubrication, and the meshing of part gear 3 22 with part input shaft gear 1 48 adopts splash lubrication.

[0044] Clutch working oil circuit: The clutch oil supply circuit is a high-pressure oil circuit, which is mainly used for the engagement and disengagement of the clutch, thereby controlling the intervention and disconnection of the engine power. After the clutch oil supply circuit passes through the oil channel inside the hybrid gearbox, it reaches the clutch oil supply port D set on the rear cover 4 of the part. The high-pressure oil passes through the clutch oil supply port D to supply oil to the clutch, as shown by the red arrow in the figure. The high-pressure oil passes through the part support plate 7, the part rear oil guide pipe 10, the part front oil guide pipe 53, and the part input shaft body 35 in turn. The part support plate 7 is provided with a groove, and the part dynamic seal 2 11 is placed therein to ensure that the high-pressure oil will not leak into the low-pressure oil circuit. The oil reaches the clutch oil inlet hole F set on the part input shaft body 35. The clutch oil inlet hole F is an oil channel port provided in the radial direction of the part input shaft body 35. After the high-pressure oil passes through the radial oil channel on the part input shaft body 35, it reaches the part input shaft body 35, the part inner D-ring 1 37, the part clutch piston 38, and the part outer D-ring 2 43. The working oil chamber composed of the working pin baffle 45 and the sealing ring 46 of the parts, under the action of the hydraulic pressure, the clutch piston 38 moves to the right, pushing the clutch baffle 44 to move to the right, and the clutch baffle 44 pushes the push rod 41 to move to the right, pushing the clutch to overcome the spring force of the clutch spring 40 to complete the combination of the friction plate 28 and the steel plate 27. In this process, the friction plate 28 and the steel plate 27 first slide and then lock to complete the clutch combination control. When the clutch is separated, the solenoid valve corresponding to the clutch is controlled to work until the hydraulic oil in the working oil chamber is drained in the opposite direction of the red arrow under the action of the spring force of the spring 40 of the parts, thereby completing the separation of the clutch.

[0045] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0046] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the aforementioned embodiments or to replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hybrid transmission hydraulic oil circuit, comprising an EM2 motor stator (1) and a rear cover (4) arranged outside the EM2 motor stator (1), characterized in that: A transmission housing (18) is mounted on the inner side of the rear cover (4); the EM2 motor stator (1) is mounted on the inner wall of the transmission housing (18); a rotor bracket (3) is arranged between the rear cover (4) and the transmission housing (18); an EM2 motor rotor (2) is mounted on the rotor bracket (3); the EM2 motor rotor (2) and the EM2 motor stator (1) constitute the motor EM2 by means of the assembly and matching of parts; a lubrication oil supply port (B) and a clutch oil supply port (D) are arranged on the inner wall of the rear cover (4); a support plate (7) is mounted on the inner wall of the rear cover (4); a small lubrication oil hole (A) and a large lubrication oil hole (C) are opened on the inner wall of the support plate (7); an EM2 drive shaft (8) is mounted on the outer wall of the support plate (7); the rotor bracket (3) is mounted on the outer side of the EM2 drive shaft (8); a rear oil guide pipe (10) is mounted on the inner side of the support plate (7); the rear oil guide pipe (10) is mounted on the inner side of the support plate (7); A front oil pipe (53) is installed on the outer wall of the oil pipe (10); an input shaft body (35) is installed on the outer wall of the EM2 drive shaft (8); a centering shaft head (34) is installed on the outer wall of the input shaft body (35); a clutch housing (25) is provided on the outer wall of the centering shaft head (34); a clutch lubricating oil hole (E) is provided on the inner wall of the clutch housing (25); a clutch oil inlet hole (F) is provided on the inner wall of the input shaft body (35); a throttle hole (H) is provided in the inner walls of the EM2 drive shaft (8), the centering shaft head (34) and the input shaft body (35); a retaining ring 2 (14) is installed on the inner wall of the rear cover (4); a rotary variable rotor (15) is mounted on one side of the retaining ring 2 (14); a rotary variable stator (16) is installed on the outer wall of the rotary variable rotor (15); and a needle bearing (33) is provided between the centering shaft head (34) and the input shaft body (35).

2. A hybrid power transmission hydraulic oil circuit according to claim 1, characterized in that: An O-ring 1 (6) is provided between the support plate (7) and the rear cover (4), a dynamic seal 1 (9) is provided between the support plate (7) and the EM2 drive shaft (8), a dynamic seal 2 (11) is provided between the support plate (7) and the rear oil guide pipe (10), a needle bearing 1 (12) is provided between the support plate (7) and the rear oil guide pipe (10), a retaining ring 1 (13) is installed on the inner wall of the rear cover (4), and the retaining end of the support plate (7) is located between the retaining ring 1 (13) and the rear cover (4).

3. The hybrid power transmission hydraulic oil circuit according to claim 1, characterized in that: A deep groove ball bearing 1 (5) is arranged between the rear cover (4) and the EM2 drive shaft (8); a transmission housing (18) is installed on the inner side of the rear cover (4); a deep groove ball bearing 3 (60) is arranged between the transmission housing (18) and the EM2 drive shaft (8); a dynamic seal 3 (59) is arranged between the EM2 drive shaft (8) and the input shaft body (35); and a needle bearing 4 (58) is arranged between the EM2 drive shaft (8) and the input shaft body (35); a thrust bearing 3 (57) and a shaft sleeve (56) are arranged at the port of the EM2 drive shaft (8); an input shaft gear 2 (55) is arranged on one side of the shaft sleeve (56); and the input shaft gear 2 (55) is installed on the outer wall of the input shaft body (35).

4. A hybrid power transmission hydraulic oil circuit according to claim 3, characterized in that: A needle roller bearing 3 (54) and an input shaft bushing (52) are installed on the inner side of the input shaft gear 2 (55), and the inner side of the needle roller bearing 3 (54) is installed on the input shaft body (35).

5. The hybrid power transmission hydraulic oil circuit according to claim 4, characterized in that: A synchronizer gear hub (51) is installed on the outer wall of the input shaft body (35), a synchronizer ring (50) is installed inside the synchronizer gear hub (51), and a coupling tooth (49) is installed at the port of the synchronizer gear hub (51).

6. A hybrid power transmission hydraulic oil circuit according to claim 5, characterized in that: An input shaft gear 1 (48) is installed on the outer wall of the input shaft body (35) located on the side of the coupling tooth (49), and a needle roller bearing 2 (47) is arranged between the input shaft gear 1 (48) and the input shaft body (35).

7. A hybrid power transmission hydraulic oil circuit according to claim 6, characterized in that: A working pin baffle (45) is installed on the outer wall of the input shaft body (35) located on one side of the input shaft gear 1 (48), a sealing ring (46) is provided between the working pin baffle (45) and the input shaft body (35), a clutch piston (38) is installed on the inner side of the working pin baffle (45), an outer D-shaped ring 2 (43) is provided on the inner wall of the working pin baffle (45) and is in abutment with the clutch piston (38), an inner D-shaped ring 1 (37) is provided in the inner wall of the clutch piston (38) and is in abutment with the input shaft body (35), and a sealing ring (46) is provided between the working pin baffle (45) and the input shaft body (35). A gear 4 (42) is provided on the inner side of the clutch piston (38) at the top, an outer D-shaped ring 1 (39) is provided in the inner wall of the gear 4 (42) and abuts against the inner wall of the clutch piston (38), a clutch spring (40) is fixedly installed on the inner wall of the gear 4 (42), a clutch baffle (44) is installed on the other side of the clutch spring (40), the clutch baffle (44) is installed on the clutch piston (38), and a push rod (41) is slidably installed in the inner wall of the gear 4 (42), and the push rod (41) corresponds to the clutch baffle (44).

8. The hybrid power transmission hydraulic oil circuit according to claim 7, characterized in that: A deep groove ball bearing 2 (31) is provided between the clutch housing (25) and the centering shaft head (34), a lip seal (32) is provided between the inner wall of the clutch housing (25) and the outer side of the centering shaft head (34), and a thrust bearing 1 (36) is provided between the centering shaft head (34) and the gear 4 (42).

9. The hybrid power transmission hydraulic oil circuit according to claim 8, characterized in that: A clutch outer hub (26) is arranged in the inner wall of the clutch housing (25), a steel plate (27) is arranged on the inner side of the clutch outer hub (26), a friction plate (28) is arranged on the inner side of the steel plate (27), a clutch inner hub (29) is arranged on the inner wall of the friction plate (28), and an oil collecting pan (30) is installed on the outer side of the gear 4 (42), the oil collecting pan (30) corresponds to the position of the deep groove ball bearing 2 (31).

10. The hybrid power transmission hydraulic oil circuit according to claim 9, characterized in that: Positioning sleeves (17) are respectively installed on the inner walls between the transmission housing (18) and the clutch housing (25); an output shaft (24) is installed on the outer walls of the two positioning sleeves (17); tapered bearings 2 (23) and tapered bearings 1 (19) are respectively arranged between the clutch housing (25) and the transmission housing (18) at both ends of the output shaft (24); a gear 3 (22), a gear 2 (21) and a gear 1 (20) are installed on the outer wall of the output shaft (24); the gear 3 (22) and the gear 4 (42) are meshed with each other; the gear 2 (21) and the input shaft gear 2 (55) are meshed with each other.

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