CN219749508U

CN219749508U - Hybrid power module

Info

Publication number: CN219749508U
Application number: CN202320106147.3U
Authority: CN
Inventors: 柴绪; 陈可; 包振庆; 陈超超; 廖兴阳; 张子阳; 赵诗鑫; 周月发
Original assignee: Chongqing Tsingshan Industrial Co Ltd
Current assignee: Chongqing Tsingshan Industrial Co Ltd
Priority date: 2023-02-03
Filing date: 2023-02-03
Publication date: 2023-09-26
Anticipated expiration: 2033-02-03

Abstract

A hybrid module including a motor, a single clutch, a first clutch, and a second clutch; the motor comprises a motor shell, a motor stator is fixedly arranged in the motor shell, a rotatable motor rotor is arranged on the inner side of the motor stator, the single clutch comprises a single clutch inner hub, the single clutch inner hub can be combined with the single clutch outer hub integrated with the motor rotor, the first clutch comprises a first clutch outer hub which is in transmission connection with the motor rotor, the first clutch outer hub can be combined with a first clutch inner hub which is in transmission connection with a first output shaft, the second clutch comprises a second clutch outer hub, the second clutch outer hub is in transmission connection with the first clutch outer hub through a main support hub, the second clutch outer hub can be combined with a second clutch inner hub which is in transmission connection with the second output shaft, the main support hub is axially limited on a support seat, and the support seat is matched with the motor shell to provide support for the hybrid power module.

Description

Hybrid power module

Technical Field

The utility model relates to the technical field of automobile power, in particular to a hybrid power module.

Background

The hybrid power P2 structure is mostly a high-integration module of a motor and three clutches, and has complex structure and high development cost. The hybrid power P2 structure can realize that the motor independently drives wheels, and can cut off connection with an engine when kinetic energy is recovered. And because there can be the transmission ratio with the output shaft, therefore does not need too big moment of torsion, can reduce cost and volume of the electrical machinery, so its fuel economy is stronger. However, in the existing highly integrated P2 hybrid module solution, one end is usually used to support the entire P2 hybrid module or to position it on the outer input shaft, which makes the radial stress of the entire three clutches uneven, and increases the axial length of the transmission, and also has to sacrifice the positioning accuracy in the axial and radial directions for saving the axial space due to the limitation of the axial space.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art, provides a hybrid power module, and solves the problems of uneven radial stress and low axial and radial positioning accuracy of three clutches of the hybrid power module.

The purpose of the utility model is realized in the following way:

a hybrid module including a motor, a single clutch, a first clutch, and a second clutch; the motor comprises a motor shell, a motor stator is fixedly arranged in the motor shell, a rotatable motor rotor is arranged on the inner side of the motor stator, the single clutch, the first clutch and the second clutch are all positioned in the motor shell, the single clutch comprises a single clutch inner hub in transmission connection with the output end of an engine, the single clutch inner hub can be combined with the motor rotor integrated with a single clutch outer hub, and the rotating power of the single clutch inner hub is transmitted to the motor rotor; the first clutch comprises a first clutch outer hub in transmission connection with the motor rotor, and the first clutch outer hub can be combined with a first clutch inner hub in transmission connection with the first output shaft to transmit the rotary power of the first clutch outer hub to the first clutch inner hub; the second clutch comprises a second clutch outer hub, the second clutch outer hub is in transmission connection with the first clutch outer hub through a main support hub, the second clutch outer hub can be combined with a second clutch inner hub in transmission connection with a second output shaft, the rotating power of the second clutch outer hub is transmitted to the second clutch inner hub, the main support hub is axially limited on a support seat, and the support seat is matched with a motor shell to provide support for a hybrid power module.

The motor rotor is provided with a limiting part axially extending towards the direction of the motor shell, one end of the limiting part is axially limited on the motor shell through a first bearing and a first clamping ring, and a disc spring and a third bearing are arranged between the other end of the limiting part and the inner hub of the single clutch.

The second clutch is located inside the first clutch, the first clutch outer hub and the second clutch outer hub are both fixed on the main support hub, the main support hub is axially limited on the support seat through the second bearing, the second clamping ring and the third clamping ring, a third bearing is arranged between the second clutch inner hub and the first clutch inner hub, and the first clutch inner hub is axially limited on the first output shaft through the fourth clamping ring.

The oil duct for supplying oil to the first clutch and the second clutch is respectively designed on the supporting seat, and an oil duct sealing ring is arranged between the supporting seat and the main supporting hub.

A single clutch friction assembly is arranged between a motor rotor of the single clutch and a single clutch inner hub, a single clutch piston is arranged between the motor rotor and the single clutch friction assembly, a single clutch piston pressing plate is arranged between the single clutch piston and the single clutch inner hub, and a single clutch spring is arranged between the single clutch piston and the single clutch piston pressing plate.

An axial extension section connected with the output end of the engine is arranged on the single clutch inner hub of the single clutch.

A first clutch friction assembly is arranged between a first clutch outer hub and a first clutch inner hub of the first clutch, a first clutch piston is arranged between the first clutch outer hub and the first clutch friction assembly, and a first clutch spring is arranged between the first clutch piston and a second clutch outer hub.

The clutch comprises a clutch body, a clutch spring support plate, a clutch outer hub, a clutch inner hub, a clutch outer hub, a clutch spring support plate, a clutch outer hub and a clutch inner hub, and is characterized in that a clutch friction assembly is arranged between the clutch outer hub and the clutch inner hub of the clutch, a clutch piston is arranged between the clutch outer hub and the clutch friction assembly, a clutch spring support plate is arranged between the clutch piston and the clutch inner hub, and a clutch spring is arranged between the clutch piston and the clutch spring support plate.

The hybrid power module comprises a motor, a single clutch, a first clutch and a second clutch; the motor comprises a motor shell, a motor stator is fixedly arranged in the motor shell, a rotatable motor rotor is arranged on the inner side of the motor stator, the single clutch, the first clutch and the second clutch are all positioned in the motor shell, the single clutch comprises a single clutch inner hub in transmission connection with the output end of an engine, the single clutch inner hub can be combined with the motor rotor integrated with a single clutch outer hub, and the rotating power of the single clutch inner hub is transmitted to the motor rotor; the motor rotor is integrated with the single clutch outer hub of the single clutch, and the motor module and the single clutch module are integrated to obtain the single clutch hybrid power module. The first clutch comprises a first clutch outer hub in transmission connection with the motor rotor, and the first clutch outer hub can be combined with a first clutch inner hub in transmission connection with the first output shaft to transmit the rotary power of the first clutch outer hub to the first clutch inner hub; the second clutch comprises a second clutch outer hub, the second clutch outer hub is in transmission connection with the first clutch outer hub through a main support hub, the second clutch outer hub can be combined with a second clutch inner hub in transmission connection with a second output shaft, the rotating power of the second clutch outer hub is transmitted to the second clutch inner hub, the main support hub is axially limited on a support seat, and the support seat is matched with a motor shell to provide support for a hybrid power module. The supporting seat is matched with the motor shell to provide support for two ends of the hybrid power module, the motor shell is responsible for supporting the single clutch and bears the axial force of the single clutch, and the supporting seat is responsible for supporting the first clutch and the second clutch and bears the axial force of the first clutch and the second clutch, so that the axial stress condition inside the clutch is optimized, the radial stress of the clutch is uniform, and the axial and radial accurate positioning of the hybrid power module is realized.

According to the hybrid power module, the supporting seat is adopted for positioning, positioning on a transmission shafting is not needed, influence of the shafting on a clutch is reduced, and meanwhile shafting load is reduced. The plastic cushion block is adopted to isolate the inner hub of the second clutch, the use amount of the bearing is reduced, the cost is saved, and the clutch is always in a compressed state by adjusting the clearance of the single clutch through the butterfly spring. Meanwhile, the mounting difficulty is reduced, the mounting time is reduced, the assembly efficiency is improved, and the cost is reduced.

Drawings

Fig. 1-2 are schematic structural diagrams of hybrid modules.

Reference numerals: the motor 1, single clutch 2, first clutch 3, second clutch 4, axial extension 5, rubber sealing block 6, first collar 7, first bearing 8, single clutch spring 9, single clutch piston pressure plate 10, single clutch inner hub 11, single clutch piston 12, single clutch friction pack 13, motor rotor 14, motor core 15, motor stator 16, motor housing 17, first clutch outer hub 18, first clutch friction pack 19, first clutch piston 20, second clutch friction pack 21, second clutch outer hub 22, second clutch spring 23, second clutch piston 24, first clutch spring 25, oil pump gear 26, main support hub 27, support seat 28, oil gallery sealing ring 29, second output shaft 30, second clutch spring support plate 31, second bearing 32, second collar 33, third collar 34, plastic spacer 35, second clutch inner hub 36, first clutch inner hub 37, third bearing 38, fourth 39, first output shaft 40, fifth collar 41, fourth collar 42, fourth collar spring 43, fourth bearing 44.

Detailed Description

Referring to fig. 1 to 2, a hybrid module includes a motor 1, a single clutch 2, a first clutch 3, and a second clutch 4; the motor 1 comprises a motor shell 17, a motor stator 16 is fixedly arranged in the motor shell 17, a rotatable motor rotor 14 is arranged on the inner side of the motor stator 16, and the single clutch 2, the first clutch 3 and the second clutch 4 are all positioned in the motor shell 17. The motor shell 17 and the motor stator 16 are fixed through interference press fitting, a motor iron core 15 is arranged between the motor stator 16 and the motor rotor 14, and the motor iron core 15 is installed on the motor rotor 14 through interference press fitting.

The single clutch 2 comprises a single clutch inner hub 11 in driving connection with the output end of the engine, the single clutch inner hub 11 can be combined with a motor rotor 14 integrated with a single clutch outer hub to transmit the rotary power of the single clutch inner hub 11 to the motor rotor 14, and the single clutch 2 is used for connecting and disconnecting the power input of the engine. The motor rotor 14 is provided with a limiting part 43 extending axially towards the motor housing 17, one end of the limiting part 43 is axially limited on the motor housing 17 through the first bearing 8 and the first clamping ring 7, and a belleville spring 42 and a third bearing 38 are arranged between the other end of the limiting part 43 and the single clutch inner hub 11. The axial play of the single clutch 2 is adjusted by the third bearing 38 and the disk spring 42. The first bearing 8 is a ball bearing, the outer ring of the first bearing 8 is in interference fit with the motor shell 17, the first bearing 8 is positioned on a shaft shoulder of the motor shell 17 during installation, the inner ring of the first bearing 8 is in clearance fit with the motor rotor 14, and the motor rotor 14 is axially limited through a first clamping ring 7 at two ends of the inner ring of the first bearing 8. The first collar 7 is a wedge-shaped collar. A single clutch friction assembly 13 is arranged between the motor rotor 14 of the single clutch 2 and the single clutch inner hub 11, a single clutch piston 12 is arranged between the motor rotor 14 and the single clutch friction assembly 13, a single clutch piston pressing plate 10 is arranged between the single clutch piston 12 and the single clutch inner hub 11, and a single clutch spring 9 is arranged between the single clutch piston 12 and the single clutch piston pressing plate 10. The single clutch friction pack 13 includes a pair of plates splined to the motor rotor 14 and a single clutch friction plate splined to the single clutch inner hub 11. The motor rotor 14 and the single clutch piston 12 form a sealed single clutch annular piston cavity through a sealing component, and under the action of pressure oil in the single clutch annular piston cavity, the single clutch piston 12 can be pushed to enable the single clutch friction assembly 13 to be combined, and the rotation power of the engine is transmitted to the motor rotor 14. The single clutch overcomes the single clutch centrifugal force by enhancing the spring force. The motor housing 17 is provided with an oil passage for supplying oil to the single clutch. The single clutch inner hub 11 of the single clutch 2 is provided with an axial extension 5 connected to the output of the engine. A fourth bearing 44 is arranged between the axial extension 5 and the stop 43 of the motor housing 17. A fifth bearing 41 is provided between the axially extending segment 5 and the first output shaft 40. The fourth bearing 44 and the fifth bearing 41 are needle bearings. A rubber sealing block 6 is arranged between the axial extension 5 and the motor housing 17. The motor rotor is integrated with the single clutch outer hub of the single clutch, and the motor module and the single clutch module are integrated to obtain the single clutch hybrid power module.

The first clutch 3 comprises a first clutch outer hub 18 in driving connection with the motor rotor 14, the first clutch outer hub 18 can be combined with a first clutch inner hub 37 in driving connection with a first output shaft 40, the rotating power of the first clutch outer hub 18 is transmitted to the first clutch inner hub 37, and accordingly the rotating power is transmitted to the first output shaft 40, and the first clutch 3 is used for realizing odd-gear power transmission. The motor rotor 14 is in driving connection with the first clutch outer hub 18 via splines.

The second clutch 4 includes a second clutch outer hub 22, the second clutch outer hub 22 is in driving connection with the first clutch outer hub 18 through a main support hub 27, the second clutch outer hub 22 is capable of being combined with a second clutch inner hub 36 in driving connection with the second output shaft 30, the rotational power of the second clutch outer hub 22 is transmitted to the second clutch inner hub 36, and thus the rotational power is transmitted to the second output shaft 30, and the second clutch 4 is used for achieving even-numbered gear power transmission. The main support hub 27 is axially limited to a support seat 28, and the support seat 28 and the motor housing 17 cooperate to provide support for the hybrid module. The second clutch 4 is located inside the first clutch 3, the first clutch outer hub 18 and the second clutch outer hub 22 are both fixed on the main support hub 27, the main support hub 27 is axially limited on the support seat 28 through the second bearing 32, the second clamping ring 33 and the third clamping ring 34, a third bearing 38 is arranged between the second clutch inner hub 36 and the first clutch inner hub 37, and the first clutch inner hub 37 is axially limited on the first output shaft 40 through the fourth clamping ring 39. A third bearing 38 is arranged between the single clutch 2 and the first clutch 3. A plastic spacer 35 is disposed between the second clutch inner hub 36 and the support base 28. The axial clearance in the first clutch 3 and the second clutch 4 is adjusted by a plastic cushion block 35, a third bearing 38 and a fourth clamping ring 39. The third bearing 38 is a thrust bearing. The first clutch outer hub 18 and the second clutch outer hub 22 are fixedly connected with the main support hub 27 by welding. The right end of the main support hub 27 is axially limited on the right end shaft shoulder of the support seat 28, and the left end of the main support hub 27 is axially limited on the support seat 28 through a second bearing 32, a second clamping ring 33 and a third clamping ring 34. The second bearing 32 is a ball bearing, the outer ring of the second bearing 32 is fixed at the left end of the main support hub 27 in an interference fit manner, and is positioned on the shaft shoulder of the main support hub 27 during installation, the outer ring is axially limited on the main support hub 27 through a second clamping ring 33, the inner ring of the second bearing 32 is in clearance fit with the support seat 28, and is positioned on the shaft shoulder at the left end of the support seat 28 during installation, and the inner ring is axially limited on the support seat 28 through a third clamping ring 34. The second collar 33 and the third collar 34 are wedge-shaped collars.

The motor housing 17 and the supporting seat 28 are fixed on the gearbox body through screws, and the motor housing 17, the supporting seat 28, the first bearing 8 and the second bearing 32 are matched to provide radial support for the hybrid power module, so that the radial stress of the three clutches is uniform, and meanwhile, the axial and radial accurate positioning of the hybrid power module is realized.

The supporting seat 28 is respectively provided with an oil passage for supplying oil to the first clutch 3 and the second clutch 4, an oil passage sealing ring 29 is arranged between the supporting seat 28 and the main supporting hub 27, and the main supporting hub 27 is provided with an oil passage connected with the oil passage of the supporting seat 28. The main support hub 27 is provided with an oil pump gear 26 in an interference press fit mode and is limited axially through a clamping ring.

A first clutch friction assembly 19 is arranged between the first clutch outer hub 18 and the first clutch inner hub 37 of the first clutch 3, a first clutch piston 20 is arranged between the first clutch outer hub 18 and the first clutch friction assembly 19, and a first clutch spring 25 is arranged between the first clutch piston 20 and the second clutch outer hub 22. The first clutch friction pack 19 includes dual plates splined to the first clutch outer hub 18 and single clutch friction plates splined to the first clutch inner hub 37. The first clutch outer hub 18, the first clutch piston 20 and the main support hub 27 form a sealed first clutch annular piston cavity through sealing components, and under the action of pressure oil in the first clutch annular piston cavity, the first clutch piston 20 can be pushed to combine the dual plates and the friction plates of the first clutch friction assembly 19, so that the rotation power of the first clutch outer hub 18 is transmitted to the first clutch inner hub 37. The first clutch piston 20, the second clutch outer hub 22 and the main support hub 27 constitute an oil pressure balance chamber that compensates for the centrifugal pressure of the first clutch.

A second clutch friction assembly 21 is arranged between the second clutch outer hub 22 and the second clutch inner hub 36 of the second clutch 4, a second clutch piston 24 is arranged between the second clutch outer hub 22 and the second clutch friction assembly 21, a second clutch spring support plate 31 is arranged between the second clutch piston 24 and the second clutch inner hub 36, and a second clutch spring 23 is arranged between the second clutch piston 24 and the second clutch spring support plate 31. The second clutch friction pack 21 includes dual plates splined to the second clutch outer hub 22 and single clutch friction plates splined to the second clutch inner hub 36. The second clutch outer hub 22, the second clutch piston 24 and the main support hub 27 form a sealed second clutch annular piston cavity through sealing components, and under the action of pressure oil in the second clutch annular piston cavity, the second clutch piston 24 can be pushed to combine the dual plates and the friction plates of the second clutch friction assembly 21, so that the rotation power of the second clutch outer hub 22 is transmitted to the second clutch inner hub 36. The second clutch spring support plate 31, the second clutch piston 24, and the second clutch inner hub 36 constitute an oil pressure balance chamber that compensates for the centrifugal pressure of the second clutch.

The supporting seat 28 is respectively provided with a hydraulic oil port and a lubrication oil port, and is respectively connected with corresponding oil passages on the gearbox body. Hydraulic oil flows into an annular oil groove on the outer side of the supporting seat 28 from the hydraulic oil port through an axial oil passage and a radial oil passage on the supporting seat 28, and the annular oil groove is respectively connected with the radial oil passages of the first clutch piston cylinder and the second clutch piston cylinder to respectively push the first clutch piston and the second clutch piston, so that the combination of the first clutch and the second clutch is controlled. The lubricating oil flows into an axial oil passage on the supporting seat 28 from the lubricating oil port and is divided into three oil passages, and one passage flows to an oil pressure balance cavity of the centrifugal pressure of the first clutch; one path flows to an oil pressure balance cavity of the centrifugal pressure of the second clutch; and the rest of the lubricating oil mainly flows to the first clutch friction assembly and the second clutch friction assembly for lubrication and cooling.

In the hybrid power module, under the driving mode of the engine, a single clutch is combined, the engine transmits power to a motor rotor, when the first clutch friction assembly or the second clutch friction assembly is combined, the power of the first clutch is transmitted to a corresponding first output shaft or a corresponding second output shaft, and when the first clutch friction assembly or the second clutch friction assembly is separated, the power from the first clutch or the second clutch cannot be transmitted to the corresponding first output shaft or the corresponding second output shaft.

In the pure electric mode, the single clutch is separated, engine power is disconnected, the motor stator drives the motor rotor to rotate, when the first clutch friction assembly or the second clutch friction assembly is combined, power of the first clutch is transmitted to the corresponding first output shaft or power of the second clutch is transmitted to the corresponding second output shaft, and when the first clutch friction assembly or the second clutch friction assembly is separated, power from the first clutch or the second clutch cannot be transmitted to the corresponding first output shaft or the corresponding second output shaft.

In the hybrid mode, the single clutch is combined, the motor and the motor jointly drive the motor rotor, when the first clutch friction assembly or the second clutch friction assembly is combined, the power of the first clutch is transmitted to the corresponding first output shaft or the power of the second clutch is transmitted to the corresponding second output shaft, and when the first clutch friction assembly or the second clutch friction assembly is separated, the power from the first clutch or the second clutch cannot be transmitted to the corresponding first output shaft or the corresponding second output shaft.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the utility model, and those skilled in the art will appreciate that the modifications made to the utility model fall within the scope of the utility model without departing from the spirit of the utility model.

Claims

1. A hybrid module comprising an electric machine (1), a single clutch (2), a first clutch (3) and a second clutch (4); the motor (1) comprises a motor shell (17), a motor stator (16) is fixedly installed in the motor shell (17), a rotatable motor rotor (14) is arranged on the inner side of the motor stator (16), and the single clutch (2), the first clutch (3) and the second clutch (4) are all located in the motor shell (17), and the motor is characterized in that: the single clutch (2) comprises a single clutch inner hub (11) in transmission connection with the output end of the engine, the single clutch inner hub (11) can be combined with a motor rotor (14) integrated with a single clutch outer hub, and the rotating power of the single clutch inner hub (11) is transmitted to the motor rotor (14); the first clutch (3) comprises a first clutch outer hub (18) in transmission connection with the motor rotor (14), the first clutch outer hub (18) can be combined with a first clutch inner hub (37) in transmission connection with the first output shaft (40), and the rotating power of the first clutch outer hub (18) is transmitted to the first clutch inner hub (37); the second clutch (4) comprises a second clutch outer hub (22), the second clutch outer hub (22) is in transmission connection with the first clutch outer hub (18) through a main support hub (27), the second clutch outer hub (22) can be combined with a second clutch inner hub (36) in transmission connection with a second output shaft (30), the rotating power of the second clutch outer hub (22) is transmitted to the second clutch inner hub (36), the main support hub (27) is axially limited to a support seat (28), and the support seat (28) is matched with a motor shell (17) to provide support for the hybrid power module.

2. The hybrid module according to claim 1, wherein: the motor rotor (14) is provided with a limiting part (43) axially extending towards the direction of the motor shell (17), one end of the limiting part (43) is axially limited on the motor shell (17) through a first bearing (8) and a first clamping ring (7), and a disc spring (42) and a third bearing (38) are arranged between the other end of the limiting part (43) and the inner hub (11) of the single clutch.

3. The hybrid module according to claim 1, wherein: the second clutch (4) is located inside the first clutch (3), the first clutch outer hub (18) and the second clutch outer hub (22) are both fixed on the main support hub (27), the main support hub (27) is axially limited on the support seat (28) through the second bearing (32), the second clamping ring (33) and the third clamping ring (34), a third bearing (38) is arranged between the second clutch inner hub (36) and the first clutch inner hub (37), and the first clutch inner hub (37) is axially limited on the first output shaft (40) through the fourth clamping ring (39).

4. The hybrid module according to claim 1, wherein: the oil duct for supplying oil to the first clutch (3) and the second clutch (4) is respectively designed on the supporting seat (28), and an oil duct sealing ring (29) is arranged between the supporting seat (28) and the main supporting hub (27).

5. The hybrid module according to claim 1, wherein: a single clutch friction assembly (13) is arranged between a motor rotor (14) of the single clutch (2) and a single clutch inner hub (11), a single clutch piston (12) is arranged between the motor rotor (14) and the single clutch friction assembly (13), a single clutch piston pressing plate (10) is arranged between the single clutch piston (12) and the single clutch inner hub (11), and a single clutch spring (9) is arranged between the single clutch piston (12) and the single clutch piston pressing plate (10).

6. The hybrid module according to claim 1, wherein: an axial extension section (5) connected with the output end of the engine is arranged on a single clutch inner hub (11) of the single clutch (2).

7. The hybrid module according to claim 1, wherein: a first clutch friction assembly (19) is arranged between a first clutch outer hub (18) and a first clutch inner hub (37) of the first clutch (3), a first clutch piston (20) is arranged between the first clutch outer hub (18) and the first clutch friction assembly (19), and a first clutch spring (25) is arranged between the first clutch piston (20) and a second clutch outer hub (22).

8. The hybrid module according to claim 1, wherein: a second clutch friction assembly (21) is arranged between a second clutch outer hub (22) and a second clutch inner hub (36) of the second clutch (4), a second clutch piston (24) is arranged between the second clutch outer hub (22) and the second clutch friction assembly (21), a second clutch spring supporting plate (31) is arranged between the second clutch piston (24) and the second clutch inner hub (36), and a second clutch spring (23) is arranged between the second clutch piston (24) and the second clutch spring supporting plate (31).