A power transmission device

Abstract

The present invention provides a power transmission device, mainly including a dual-motor planetary mechanism, a third motor, a dual-power-input single-power-output dual clutch, and a differential. The present invention can more reasonably distribute the power of three motors in two gears, transmit motion through the direct drive mode of the motor and the power modes of increasing speed and reducing torque or reducing speed and increasing torque, and can also use engine power to implement various hybrid drives, effectively meeting the requirements of different vehicle working conditions and speeds. The overall power has a high power density per unit volume, a compact structure, diverse power modes, increased cruising range, and reduced configuration and operating costs.

Description

Technical Field

[0001] The present invention relates to the field of transmission devices, and particularly to a power transmission device. Background Art

[0002] New energy electric vehicles are highly efficient, energy-saving and environment-friendly. The configuration of their power transmission devices directly affects the operating functions, efficiency and cost of the entire electric vehicle. The efficiency of the electric vehicle drive motor varies with different loads and speeds. The conventional power device mode has limitations in terms of volume and function, resulting in high energy consumption of the vehicle, reduced cruising range, and increased vehicle operating costs.

[0003] The present invention provides a power transmission device to solve the problems of existing electric vehicles, such as few transmission functions, high energy consumption, short cruising range, and high vehicle operating costs. The present invention integrates three motors with a double planetary transmission mechanism, a dual-clutch with dual power inputs, and an engine for hybrid power and power generation, which can more reasonably utilize various power combinations to transmit motion modes, enabling the power assembly to operate in a wider high-efficiency working range, meeting the requirements of different working conditions and speeds for the vehicle, being suitable for longitudinal installation, having a compact structure and multiple functions, increasing the cruising range, and reducing the configuration cost and operating cost of the entire vehicle. Summary of the Invention

[0004] A power transmission device provided by the present invention includes a first planetary power integration, a second planetary power integration, a third motor integration, a dual-clutch and a differential arranged inside an integrated housing.

[0005] The first planetary power integration includes a first sun gear, a first planet gear, a first planet carrier, a first internal gear ring, a first output shaft, a first motor, a first rotor, a first stator and a first motor shaft. The first stator is arranged on the right side inside the integrated housing. The first rotor is rotatably arranged inside the first stator. The first motor shaft is a tubular sleeve arranged inside the first rotor. The first sun gear is concentrically connected to the right end of the first motor shaft. The first planet gear consists of more than three identical independent gears evenly distributed around the first sun gear, located between the first sun gear and the first internal gear ring, meshing with the first sun gear and the first internal gear ring. The first planet gear and the first planet carrier are supported and correspondingly connected by a bearing sleeve. The first internal gear ring is fixed to the inner wall of the integrated housing. The left end of the first output shaft is connected to the first planet carrier and the right end is connected to the first flywheel.

[0006] The second planetary power integration includes the second motor, the second stator, the second rotor, the second motor shaft, the second sun gear, the second planetary gears, the second planetary carrier, the second internal gear ring, and the second output shaft. The second stator is fixedly arranged on the left side of the main housing. The second rotor is rotatably arranged inside the second stator. The second motor shaft is a tubular sleeve arranged inside the second rotor. The second sun gear is concentrically connected to the left end of the second motor shaft. The second planetary gears are composed of more than three identical independent gears evenly distributed around the second sun gear, located between the second sun gear and the second internal gear ring, and meshed with the second sun gear and the second internal gear ring. The second planetary gears and the second planetary carrier are supported and connected by bearing loose sleeves correspondingly. The second internal gear ring is fixed on the inner wall of the integrated housing. The second output shaft penetrates through the support plate, the bearing, the second motor shaft, the first motor shaft, and the first output shaft from left to right. The left end of the second output shaft is connected to the second planetary carrier, and the right end is connected to the second flywheel.

[0007] The third motor integration includes the third flywheel and the third clutch. The third motor shaft is connected to the third flywheel. The third clutch is connected to the end of the second output shaft passing through the left support plate. The third flywheel is coupled or separated from the third clutch.

[0008] It is further characterized in that, optionally, the first planetary power integration and the second planetary power integration can be composed of multi-stage planetary transmissions with deceleration or speed increase. Optionally, a synchronizer and a clutch can be provided in the first planetary power integration and the second planetary power integration.

[0009] The dual clutch includes the first clutch and the first flywheel, the second clutch and the second flywheel, and the third output shaft. The left end of the third output shaft is coaxially connected to the first clutch and the second clutch in sequence. The second clutch is contained inside the first clutch. The first flywheel is connected to the right end of the first output shaft and is coupled or separated from the first clutch. The second flywheel is connected to the right end of the second output shaft and is coupled or separated from the second clutch. The right end of the third output shaft is connected to the differential.

[0010] The integrated housing includes an outer peripheral cylindrical housing and five vertical facade support plates with different diameters. Bearings are arranged coaxially on the support plates. Hollow passages can be selectively provided to allow gas or liquid to flow through the passages.

[0011] Optionally, the engine and the third motor are replaced. The engine shaft is connected to the third flywheel. The third clutch is connected to the end of the second output shaft passing through the left support plate. The third flywheel is coupled or separated from the third clutch.

[0012] According to the power transmission device provided by the present invention, it is characterized in that it includes a differential, and the differential is connected to the right end of the third output shaft.

[0013] The inside of the integrated housing is a hollow passage structure, enabling gas or liquid to flow through the passage.

[0014] According to the power transmission device provided by the present invention, it is characterized in that it further includes a vertical facade support plate and its bearings connected to the integrated housing. The inside of the integrated housing is a hollow passage structure, enabling gas or liquid to flow through the passage.

[0015] According to the power transmission device provided by the present invention, optionally, the sun gear, the planet gear, and the internal gear ring are spur gears, helical gears, or herringbone gears.

[0016] According to the power transmission device provided by the present invention, optionally, the transmission ratios of the first planetary power integration and the second planetary power integration are the same or different.

[0017] According to the power transmission device provided by the present invention, optionally, the first motor and the second motor are internal rotor structure motors or external rotor structure motors.

[0018] According to the power transmission device provided by the present invention, optionally, the first planetary power integration, the second planetary power integration, and the third motor or the engine can perform direct drive transmission movements separately or jointly.

[0019] According to the power transmission device provided by the present invention, optionally, the first planetary power integration and the second planetary power integration can perform speed reduction and torque increase transmission movements separately or jointly. The third motor or the engine performs direct drive while the first planetary power integration and the second planetary power integration perform speed reduction and torque increase, and they jointly perform transmission movements with different power combinations.

[0020] According to the power transmission device provided by the present invention, the first motor, the second motor, and the third motor perform energy feedback, and the engine drives the second motor to generate electricity.

[0021] According to the power transmission device provided by the above-mentioned present invention, including an electric vehicle body, it is characterized in that it further includes an electric vehicle power assembly, a pure electric vehicle, an extended-range electric vehicle, and a hybrid electric vehicle. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 is a side sectional view of a power transmission device of the present invention;

[0024] Figure 2 is a side sectional view of a power transmission device of the present invention configured with a synchronizer;

[0025] Figure 3 is a side sectional view of a power transmission device of the present invention configured with a clutch;

[0026] Figure 4 is a side sectional view of a power transmission device of the present invention with the first planet gear as the driving wheel;

[0027] Reference numerals:

[0028] 11: Third motor; 12: Differential; 13: First motor; 14: First stator;

[0029] 15: First rotor; 16: First motor shaft; 17: Second motor; 18: Second stator;

[0030] 19: Second rotor; 20: Second motor shaft; 21: First output shaft; 22: Second output shaft; 23: Third output shaft; 24: First sun gear; 25: First planet gear;

[0031] 26: First planet carrier; 27: First internal gear ring; 28: Second sun gear;

[0032] 29: Second planet gear; 30: Second planet carrier; 31: Second internal gear ring;

[0033] 32: First flywheel; 33: First clutch; 34: Second flywheel; 35: Second clutch; 36: Third flywheel; 37: Third clutch; 38: Integrated housing; 39: Engine. Detailed embodiments

[0034] The following will further describe in detail the embodiments of the present invention in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0035] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationships indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the embodiments of 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 should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance.

[0036] In the description of the embodiments of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "coupled" 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 directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0037] In the embodiments of the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0038] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0039] Embodiment 1 is as shown in the attached Figure 1As shown: A power transmission device, characterized in that it includes a first planetary power integration, a second planetary power integration, a third motor integration, a dual clutch and a differential. The first planetary power integration includes a first sun gear 24, a first planetary gear 25, a first planetary carrier 26, a first internal gear ring 27 and a first output shaft 21, a first motor 13, a first stator 14, a first rotor 15 and a first motor shaft 16. The first stator 14 is arranged on the right side inside the integration housing 38. The first rotor 15 is rotatably arranged inside the first stator 14. The first motor shaft 16 is a tubular sleeve arranged inside the first rotor 15. The first sun gear 24 is concentrically connected to the first motor shaft 16. The first planetary gear 25 consists of more than three identical independent gears evenly distributed around the first sun gear 24 and meshes with each other between the first sun gear 24 and the first internal gear ring 27. The support of the first planetary gear 25 and the first planetary carrier 26 is correspondingly connected by a bearing loose sleeve. The first internal gear ring 27 is fixed on the inner wall of the integration housing 38. The left end of the first output shaft 21 is connected to the first planetary carrier 26, and the right end is connected to the first flywheel 32.

[0040] The second planetary power integration includes a second motor 17, a second stator 18, a second rotor 19 and a second motor shaft 20, a second sun gear 28, a second planetary gear 29, a second planetary carrier 30, a second internal gear ring 31, a second output shaft 22. The second stator 18 is arranged on the left side inside the integration housing 38. The second rotor 19 is rotatably arranged inside the second stator 18. The second motor shaft 20 is a tubular sleeve arranged inside the second rotor 19. The second sun gear 28 is concentrically connected to the second motor shaft 20. The second planetary gear 29 consists of more than three identical independent gears evenly distributed around the second sun gear 28 and meshes with each other between the second sun gear 28 and the second internal gear ring 31. The support of the second planetary gear 29 and the second planetary carrier 30 is correspondingly connected by a bearing loose sleeve. The second internal gear ring 31 is fixed on the inner wall of the integration housing 38. The second output shaft 22 passes through the support plate and the bearing, the second motor shaft 20, the first motor shaft 16, and the first output shaft 21 from left to right. The left end of the second output shaft 22 is connected to the second planetary carrier 30, and the right end is connected to the second flywheel 34.

[0041] The third motor integration includes a third flywheel 36 and a third clutch 37. The rotating shaft of the third motor 11 is connected to the third flywheel 36. The third clutch 37 is connected to the end of the second output shaft 22 passing through the left support plate. The third flywheel 36 is coupled or separated from the third clutch 37.

[0042] Optionally, the first planetary power integration and the second planetary power integration can be composed of a multi-stage planetary transmission mechanism with a decelerating or accelerating effect. Optionally, synchronizers and clutches are arranged on the first motor shaft 16, the second motor shaft 20, the first output shaft 21, and the second output shaft 22.

[0043] The dual clutch includes a first flywheel 32 and a first clutch 33, a second flywheel 34 and a second clutch 35, and a third output shaft 23. The left end of the third output shaft 23 is coaxially and sequentially connected to the first clutch 33 and the second clutch 35. The second clutch 35 is disposed within the first clutch 33. The first flywheel 32 is connected to the right end of the first output shaft 21 and is coupled or separated from the first clutch 33. The second flywheel 34 is connected to the right end of the second output shaft 22 and is coupled or separated from the second clutch 35. The right end of the third output shaft 23 is connected to a differential 12.

[0044] The integrated housing 38 includes an outer peripheral cylindrical housing and five vertical facade support plates with different diameters. Bearings are coaxially arranged on the support plates. A hollow passage can be selectively provided within the integrated housing 38 to allow gas or liquid to flow through the passage.

[0045] Example 2 is as shown in the appendix Figure 2 As shown, a synchronizer can be selectively configured. A two-way synchronizer is provided at the left end of the first output shaft 21 to engage or disengage from the engagement gear ring at the right end of the first motor shaft 16 or the engagement gear ring on the left side of the first planet carrier 26. A synchronizer is provided at the right end of the first motor shaft 16 to engage or disengage from the engagement gear ring on the left side of the first sun gear 24. Needle bearings are respectively sleeved on the axles of the first sun gear 24 and the first planet carrier 26. A two-way synchronizer is provided at the left end of the second output shaft 22 to engage or disengage from the engagement gear ring at the left end of the second motor shaft 20 or the engagement gear ring on the right side of the second planet carrier 30. A synchronizer is provided at the left end of the second motor shaft 20 to engage or disengage from the engagement gear ring on the right side of the second sun gear 28. Needle bearings are respectively sleeved on the axles of the second sun gear 28 and the second planet carrier 30.

[0046] Example 3 is as shown in the appendix Figure 3 As shown, a clutch can be selectively configured. The right port of the first motor shaft 16 is connected to a flywheel. A clutch is provided at the left port of the first output shaft 21 to be coupled or separated from the flywheel. The left port of the second motor shaft 20 is connected to a flywheel. A clutch is provided at the left end of the second output shaft 22 to be coupled or separated from the flywheel.

[0047] When the second motor 17 operates in direct drive, the engagement gear ring of the second sun gear 28 is separated from the synchronizer on its right side. The flywheel at the left end of the second motor shaft 20 is coupled to the clutch at the left end of the second output shaft 22. The second clutch 35 is coupled and the third clutch 37 is separated.

[0048] When the second motor 17 operates in variable speed, the engagement gear ring of the second sun gear 28 is engaged with the synchronizer on the right side. The clutch on the right side of the second planet carrier 30 is coupled. The second clutch 35 is coupled and the third clutch 37 is separated.

[0049] When the engine 11 drives the second motor 17 to generate electricity, the third clutch 37 is coupled, the second clutch 35 is disengaged, the clutch on the right side of the second planet carrier 30 is coupled, and the synchronizer on the right side of the second sun gear 28 is disengaged.

[0050] Example 4 is as shown in the appendix Figure 4 As shown, the planet gear can be selectively used as the driving wheel. The first planet carrier 26 is connected to the right end of the first motor shaft 16. The first sun gear 24 is connected to the left end of the first output shaft 21. The first planet gear 25 meshes with the first sun gear 24 and the first internal gear ring 27. When the first motor shaft 16 rotates, the planetary mechanism performs a speed increasing and torque reducing transmission motion.

[0051] Example 5 is as shown in the appendix Figure 1 As shown, the first motor 13 operates with speed reduction and torque increase, and the second motor 17 does not operate. The first clutch 33 is coupled, the second clutch 35 is disengaged. The first motor 13 transmits power to the first output shaft 21, the first flywheel 32, the first clutch 33, the third output shaft 23 and the differential 12 through the first sun gear 24, the first planet gear 25 and the first planet carrier 26.

[0052] Example 6 is as shown in the appendix Figure 1 As shown, the second motor 17 operates with speed reduction and torque increase, and the first motor 13 does not operate. The second clutch 35 is coupled, and the first clutch 33 and the third clutch 37 are disengaged. The second motor 17 transmits power to the second output shaft 22 through the second sun gear 28, the second planet gear 29 and the second planet carrier 30. The second output shaft 22 transmits the motion to the third output shaft 23 and the differential 12 through the second flywheel 34 and the second clutch 35.

[0053] Example 7 is as shown in the appendix Figure 1 As shown, the first motor 13 and the second motor 17 operate together with speed reduction and torque increase. Through speed regulation by the controller, the angular velocities of the first motor 13 and the second motor 17 transmitted to the first output shaft 21 and the second output shaft 22 are the same. The first clutch 33 is coupled, the second clutch 35 is coupled, and the third clutch 37 is disengaged. The first motor 13 transmits power to the first output shaft 21 through the first sun gear 24, the first planet gear 25 and the first planet carrier 26. The second motor 17 transmits power to the second output shaft 22 through the second sun gear 28, the second planet gear 29 and the second planet carrier 30. The first output shaft 21 and the second output shaft 22 transmit the resultant force to the third output shaft 23 and the differential 12 through the coupled first clutch 33 and second clutch 35.

[0054] Example 8 is as shown in the appendix Figure 2As shown, the first motor 13 operates directly, and the second motor 17 does not operate. When the first motor 13 operates, the synchronizer on the left side of the first sun gear 25 disengages, and the two-way synchronizer on the right side of the first sun gear 25 meshes with the engaging gear ring at the port of the first motor shaft 16, disengaging from the engaging gear ring of the first planet carrier 26. The first clutch 33 is coupled, and the second clutch 35 is disengaged. The first motor 13 transmits power to the differential 12 through the two-way synchronizer, the first output shaft 21, the first flywheel 32, the first clutch 33, and the third output shaft 23.

[0055] Embodiment Nine is as shown in the appendix Figure 2 As shown, the second motor 17 operates directly, and the first motor 13 does not operate. When the second motor 17 operates, the synchronizer on the right side of the second sun gear 28 disengages, and the two-way synchronizer on the left side of the second sun gear 28 meshes with the engaging gear ring of the second motor shaft 20, disengaging from the engaging gear ring of the second planet carrier 30. The second clutch 35 is coupled, and the first clutch 33 is disengaged. The second motor 17 transmits power to the differential 12 through the two-way synchronizer, the second output shaft 22, the second flywheel 34, the second clutch 35, and the third output shaft 23.

[0056] Embodiment Ten is as shown in the appendix Figure 2 As shown, the first motor 13 and the second motor 17 operate directly together. When the first motor 13 and the second motor 17 operate together, the first clutch 33 and the second clutch 35 are coupled, and the third clutch 37 is disengaged. The synchronizer on the left side of the first sun gear 24 and the synchronizer on the right side of the second sun gear 28 disengage from the corresponding engaging gear rings respectively;

[0057] The two-way synchronizer of the first planetary mechanism meshes with the engaging gear ring at the port of the first motor shaft 16, and the first motor 13 transmits motion to the third output shaft 23 through the two-way synchronizer, the first output shaft 21, and the first clutch 33;

[0058] The two-way synchronizer of the second planetary mechanism meshes with the engaging gear ring at the port of the second motor shaft 20, and the second motor 17 transmits motion to the third output shaft 23 through the two-way synchronizer, the second output shaft 22, and the second clutch 35;

[0059] Through speed regulation by the controller, the angular velocities of the first motor 13 and the second motor 17 transmitted to the third output shaft 23 are the same, and the resultant force is transmitted to the differential 12.

[0060] Embodiment Eleven is as shown in the appendix Figure 2As shown in the figure, the first motor 13 directly drives and the second motor 17 runs with speed reduction and torque increase. The direct drive operation mode of the first motor 13 is the same as that of the eighth embodiment; for the operation mode of the second motor 17 with simultaneous speed reduction and torque increase, the first clutch 33 is coupled, the second clutch 35 is coupled, the third clutch 37 is disengaged, the two-way synchronizer of the second planetary mechanism meshes with the engaging gear ring of the second planetary carrier 30, the synchronizer on the right side of the second sun gear 28 meshes with the corresponding engaging gear ring, and the second motor 17 transmits motion to the third output shaft 23 through the second sun gear 28, the second planet gear 29, the second planetary carrier 30, the second output shaft 22, and the second clutch 35. Through speed regulation by the controller, the angular velocities of the first motor 13 and the second motor 17 transmitted to the third output shaft 23 are the same, and the third output shaft 23 transmits the resultant force to the differential 12.

[0061] Embodiment Twelve is as shown in the appendix Figure 4 As shown in the figure, the first motor 13 runs with speed increase and torque reduction, and the second motor 17 runs with speed reduction and torque increase. The operation mode of the first motor 13 with speed increase and torque reduction is the same as that of the fourth embodiment; the operation mode of the second motor 17 with speed reduction and torque increase is the same as that of the eleventh embodiment, the first clutch 33 is coupled, the second clutch 35 is coupled, and the third clutch 37 is disengaged.

[0062] Under the condition of reasonably configuring the rated speed and rated torque of the first motor 13 and the second motor 17, according to the different working conditions and speed requirements of vehicle driving, when the vehicle is cruising at a relatively high speed and low torque, the speed increase and torque reduction function of the planetary mechanism can be used, and when the vehicle is driving at a relatively low speed and large torque, the speed reduction and torque increase function of the planetary mechanism can be used, which can make the motor operate more economically and efficiently, reduce power consumption, and increase the service life of the motor.

[0063] Embodiment Thirteen, as shown in the appendix Figure 1 As shown in the figure, optionally, the third motor 11 directly drives, the first motor 13 and the second motor 17 do not operate, the third clutch 37 is coupled, the second clutch is coupled, and the third motor 11 transmits the rotational power to the differential 12 through the third flywheel 36 and the third clutch 37, the second output shaft 22, the second flywheel 34 and the second clutch 35, and the third output shaft 23.

[0064] Embodiment Fourteen is as shown in the appendix Figure 2 As shown in the figure, the engine 39 drives the second motor 17 to generate electricity, and the first motor 13 runs with speed reduction and torque increase or directly drives.

[0065] When the engine 39 runs, it drives the second planetary carrier 30, the second planet gear 29, the second sun gear 28, and the second motor shaft 20 through the coupling of the third clutch 37 and the second output shaft 22 to make the second rotor 19 and the second stator 18 generate electricity inductively, and the second clutch 35 is disengaged;

[0066] The engine 39 operates to drive the second motor shaft 20 through the third flywheel 36 and the third clutch 37 and the second output shaft 22, causing the second rotor 19 and the second stator 18 to generate electricity by induction. The two-way synchronizer of the second planetary power mechanism engages with the engaging gear of the second motor shaft 20. The synchronizer on the right side of the second sun gear 28 disengages from the corresponding engaging gear, and the second clutch 35 disengages.

[0067] When the engine 39 drives the second motor 17 to generate electricity in this embodiment, optionally, the first motor 13 operates in a speed reduction and torque increase mode or in a direct drive mode.

[0068] Embodiment Fifteen As shown in the appendix Figure 2 shown, the second motor 17 starts the engine 39 to operate. At this time, the second clutch 35 disengages, the third clutch 37 couples, the engaging gear ring of the second sun gear 28 disengages from the synchronizer on its right side, the engaging gear ring at the left port of the second motor shaft 20 engages with the two-way synchronizer on its left side. The second motor 17 transmits power to the engine 39 through the second motor shaft 20, the second output shaft 22, and the third clutch 37. The first motor 13 can operate optionally or not operate.

[0069] Embodiment Sixteen Optionally, the engine 39 and the first motor 13 and the second motor 17 jointly drive and operate. When the first motor 13 and the second motor 17 operate in direct drive or variable speed as described in the above embodiments, the engine 39 is selected to operate simultaneously, the third clutch 37 couples, the angular velocities of the engine 39 and the second motor 17 acting on the second output shaft 22 are the same, the angular velocities of the second output shaft 22 and the first output shaft 21 acting on the third output shaft 23 are the same, and the third output shaft 23 transmits the hybrid resultant force of the first motor 13, the second motor 17, and the engine 39 to the differential 12.

[0070] Embodiment Seventeen The first motor 13 and the second motor 17 and the third motor 11 perform energy recovery operation. When the vehicle travels without power, the wheels drive the third output shaft 23 to reverse and transmit the rotational power along the transmission system to the first motor 13 and the second motor 17 or the third motor 39 to generate electricity by electromagnetic induction. At this time, the third clutch 37 disengages. Optionally, the first motor 13, the second motor 17, and the third motor 11 are used to generate kinetic energy, or they can jointly enter the power generation mode. The third clutch couples or disengages according to the working state of the third motor.

[0071] A power transmission device provided by the present invention has multiple working operation modes. Only some embodiments are given here for illustration and cannot be used to limit all the working motion modes of a power transmission device of the present invention.

Claims

1. A power transmission device, characterized in that, It includes a first planetary power integration, a second planetary power integration, a third motor integration, a dual clutch and a differential; The first planetary power integration includes a first sun gear, a first planet gear, a first planet carrier, a first internal gear ring and a first output shaft, a first motor, a first rotor, a first stator and a first motor shaft. The first stator is arranged on the right side inside the integration housing. The first rotor is rotatably arranged inside the first stator. The first motor shaft is a hollow tube sleeved in the central hole of the first rotor. The first sun gear is concentrically connected to the right end of the first motor shaft. The first planet gear consists of more than three identical independent gears evenly distributed around the first sun gear, located between the first sun gear and the first internal gear ring, and meshing with the first sun gear and the first internal gear ring. The support of the first planet gear and the first planet carrier is correspondingly connected by a bearing loose sleeve. The first internal gear ring is fixed on the inner wall of the integration housing. The left end of the first output shaft is connected to the first planet carrier, and the right end is connected to a first flywheel; The second planetary power integration includes a second motor, a second stator, a second rotor and a second motor shaft, a second sun gear, a second planet gear, a second planet carrier, a second internal gear ring, a second output shaft. The second stator is fixed on the left side inside the integration housing. The second rotor is rotatably arranged in the inner cavity of the second stator. The second motor shaft is a hollow structure fixed in the central hole of the second rotor. The second sun gear is concentrically connected to the left end of the second motor shaft. The second planet gear consists of more than three identical gears evenly distributed around the second sun gear, located between the second sun gear and the second internal gear ring, and meshing with the external teeth of the second sun gear and the internal teeth of the second internal gear ring. The support of the second planet gear and the second planet carrier is correspondingly connected by a bearing loose sleeve. The second internal gear ring is fixed on the inner wall of the integration housing. The second output shaft penetrates through the support plate and the bearing, the second motor shaft, the first motor shaft, and the first output shaft from left to right. The left end of the second output shaft is connected to the second planet carrier, and the right end is connected to a second flywheel; The third motor integration includes a third motor, a third flywheel, and a third clutch. The third motor shaft is connected to the third flywheel. The third clutch is fixed on the left port of the second output shaft passing through the left support plate. The third flywheel is coupled or separated from the third clutch; It is further characterized in that the first planetary power integration and the second planetary power integration are composed of a multi-stage planetary transmission with variable speed, and a synchronizer and a clutch are provided in the first planetary power integration and the second planetary power integration; The dual clutch includes a first clutch and a first flywheel, a second clutch and a second flywheel, and a third output shaft. The left end of the third output shaft is coaxially and sequentially connected to the first clutch and the second clutch. The right end of the third output shaft is connected to a differential. The second clutch is disposed within the first clutch. The first flywheel is connected to the right end of the first output shaft and is coupled or disengaged from the first clutch. The second flywheel is connected to the right end of the second output shaft and is coupled or disengaged from the second clutch.

2. The power transmission device according to claim 1, wherein It includes an integrated housing, and the integrated housing includes an outer peripheral cylindrical housing and a vertical facade support plate. Coaxial bearings are provided on the support plate, and a hollow passage is provided within the integrated housing for gas or liquid to flow therein.

3. A power transmission device according to claim 1, characterized in that It includes a differential, and the differential is connected to the right end of the third output shaft.

4. A power transmission device according to claim 1, characterized in that, The sun gear, the planet gear, and the internal gear ring are spur gears, helical gears, or herringbone gears.

5. A power transmission device according to claim 1, characterized in that, The transmission ratios of the first planetary power integration and the second planetary power integration are the same or different.

6. A power transmission device according to claim 1, characterized in that The first motor and the second motor are internal rotor structure motors or external rotor structure motors.

7. A power transmission device according to claim 1, characterized in that, The first planetary power integration, the second planetary power integration, and the third motor can perform direct drive transmission movements separately or jointly.

8. A power transmission device according to claim 1, wherein, The first planetary power integration and the second planetary power integration can perform speed reduction and torque increase transmission movements separately or jointly. The third motor performs direct drive while the first planetary power integration and the second planetary power integration perform speed reduction and torque increase, and they jointly perform transmission movements with different power combinations.

9. A power transmission device according to claim 1, characterized in that, The first motor, the second motor, and the third motor perform energy feedback.

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