Double-flywheel hybrid power dividing simplified structure and control method

Abstract

The invention relates to a double-flywheel hybrid power dividing simplified structure and a control method. The power dividing simplified structure comprises a first flywheel, an input shaft, a second flywheel and an integrated motor. The first flywheel is connected with the output end of an engine crankshaft, the input shaft is inserted into the first flywheel through a bearing, the second flywheel is connected with the input shaft, and the integrated motor is connected with the second flywheel. A gear transmission mechanism is arranged at the rear end of the first flywheel, and power dividing is achieved. The engine flywheel shell structure is improved, double-flywheel integrated output is achieved, power output can be increased according to requirements in a range extending mode, the special requirements of a vehicle are met, the improvement cost is low, and the structure is simple and reliable; on the basis of an engine integrated one-piece motor range extending scheme, a flywheel integration scheme is improved, a shunting output port is added, traditional power torque output can be achieved according to requirements while power generation is conducted, the requirements of part of special new energy vehicle models for multi-power output are met, and simplification and low cost are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of diesel engine hybridization, and in particular to a simplified dual-flywheel hybrid power split structure and a control method. Background Art

[0002] With the development of hybrid vehicle technology, the development background of hybrid vehicles is indeed closely related to the two global issues of environmental protection and energy conservation. With the intensification of the global energy crisis and the increasingly serious environmental pollution problem, it has become a top priority to find a more efficient and clean way to use energy. As a mode of transportation that can significantly reduce fuel consumption and exhaust emissions, hybrid vehicles are gradually becoming an important direction for the transformation of the automotive industry. Energy crisis: The limited resources of traditional fossil fuels have led to a tight energy supply worldwide. Finding alternative energy sources and improving energy efficiency have become the key to solving the energy crisis. Environmental pollution: Automobile exhaust emissions are one of the main causes of air pollution and the intensification of the greenhouse effect. Reducing automobile exhaust emissions, especially reducing the emission of harmful substances such as carbon dioxide, nitrogen oxides and particulate matter, is of great significance to improving air quality and protecting the ecological environment. Technological progress: The rapid development of battery technology, motor technology and power electronics technology has provided technical support for the popularization of hybrid vehicles. These technological advances have significantly improved the performance, reliability and cost of hybrid systems.

[0003] A hybrid vehicle is a vehicle whose vehicle drive system is composed of two or more single drive systems that can operate simultaneously. The vehicle's driving power is provided by the single drive systems individually or jointly according to the actual vehicle driving state.

[0004] The principle of hybrid electric vehicles is to use different power sources to give full play to their respective advantages under different working conditions to achieve the best power matching and energy management. Its power sources generally include internal combustion engines, electric motors, batteries, fuel cells, hydraulic pumps, hydraulic motors, etc., which are connected and controlled by components such as transmissions, clutches, differentials, and electronic controllers. According to the different power sources, hybrid electric vehicles can be divided into the following types: Hybrid electric vehicles: Both internal combustion engines and electric motors can drive wheels through a power distribution device, and the power distribution ratio of internal combustion engines and electric motors can be adjusted as needed. Fuel cell hybrid vehicles: Using fuel cells and batteries as power sources, fuel cells convert hydrogen and oxygen into electricity and water to power the electric motor, while batteries are used to store excess electricity or provide auxiliary power when the fuel cell cannot meet the demand. Hydraulic power hybrid vehicles: Using a hydraulic power system composed of an internal combustion engine and a hydraulic pump, hydraulic motor, hydraulic accumulator, etc. as a power source. In addition, according to whether it can be charged externally, hybrid electric vehicles can also be divided into ordinary hybrid electric vehicles (HEV) and plug-in hybrid electric vehicles (PHEV).

[0005] As an energy-saving, low-emission, high-performance vehicle, hybrid electric vehicles have the following advantages:

[0006] Low fuel consumption: With the assistance of electric motors, hybrid vehicles can be driven by batteries alone when starting and accelerating, reducing fuel consumption. Low noise: The power is better than that of pure internal combustion engine vehicles of the same displacement, which can reduce the mechanical noise in the car. Advanced technology: Instead of using traditional gearboxes, a coupling unit with a planetary gear structure (such as ECVT) is used instead. Environmental protection: Compared with fuel vehicles, hybrid vehicles have higher fuel efficiency and can travel farther at the same fuel consumption. Tax advantage: In some countries and regions, hybrid vehicles can enjoy national subsidy programs, and taxes are lower or exempted during use. Operating cost: Hybrid vehicles reduce the consumption of fossil fuels, save operating costs for users, and are less affected by rising fuel prices. Regenerative braking: Every braking of a hybrid vehicle is an energy recovery process, which can convert part of the vehicle's kinetic energy into electrical energy and store it in the battery. High value retention rate: With the continuous rise in gasoline prices, fuel vehicles have depreciated seriously, while hybrid vehicles have a higher value retention rate in the used car market.

[0007] Commercial vehicles often face higher fuel consumption and emission problems due to their heavy load and long driving distance. The application of hybrid technology in the field of commercial vehicles can significantly improve fuel economy, reduce operating costs, and reduce environmental impact.

[0008] In traditional technology, patent CN109941091A discloses a hybrid power system and working method that takes into account both power splitting and range extension. The hybrid power system mainly includes an engine, a torsional damper, an input shaft, a No. 1 motor, a No. 2 motor, a mode switching device, a planetary gear, a planetary carrier shaft, a sun gear shaft, a No. 1 motor shaft, a No. 2 motor shaft, a No. 2 motor shaft gear, a ring gear shaft, and an output shaft gear; both the No. 1 motor and the No. 2 motor have two states: power generation and electric driving.

[0009] The CN216374161U patent discloses that the present invention provides a hybrid transmission system for an automobile, which includes a small engine, a generator, a drive motor, a clutch, a sun gear shaft, a sun gear, a planet carrier, a planet carrier shaft, a planet carrier shaft gear, an outer gear ring, a drive motor gear, a differential, a transmission input shaft, an active bevel wheel, a transmission input gear, a transmission steel belt, a transmission output shaft, a driven bevel wheel, and a transmission output shaft gear; the generator has the ability to adjust power generation, and when the automobile is running in a hybrid oil-electric mode, the engine can be kept running in a high-efficiency speed range, and the engine power can be diverted to the automobile drive system by adjusting the power generation amount, and the remaining power of the driving automobile is used for the generator to generate electricity to supplement the power battery, and the peak power demand of the automobile is supplemented by the drive motor, and it has the function of peak shaving and valley filling; the system can drive the vehicle in a pure electric, low-speed range-extending, medium-high-speed oil-electric hybrid drive mode, and accurately adjust the speed of the drive motor and the engine when the automobile is running at a medium-high speed to make it run economically.

[0010] However, current hybrid vehicles cannot realize the three operating states of power-split hybrid drive, extended-range hybrid drive and pure electric. Summary of the invention

[0011] Based on this, it is necessary to provide a simplified structure and control method for dual-flywheel hybrid power splitting in response to the problems in the prior art, and to use the engine flywheel housing structure improvement to achieve dual-flywheel integrated output. In the extended-range mode, the power output can be increased according to demand to meet the special needs of the vehicle, with low modification cost, simple structure and reliability. On the basis of the engine integrated integrated motor range extension solution, the flywheel integration solution is modified to increase the split output port, and the traditional power torque output can be achieved according to demand while generating electricity, meeting the needs of some special new energy vehicle models for multiple power outputs, which is simplified and low-cost.

[0012] A dual-flywheel hybrid power split simplified structure, the power split simplified structure comprising:

[0013] A first flywheel, an input shaft, a second flywheel and an integrated electric motor;

[0014] The first flywheel is connected to the output end of the engine crankshaft, the input shaft is inserted into the first flywheel through a bearing, the second flywheel is connected to the input shaft, and the integrated motor is connected to the second flywheel;

[0015] Among them, a gear transmission mechanism is arranged at the rear end of the first flywheel to realize power splitting.

[0016] In one embodiment, the gear transmission mechanism includes an output gear, an output shaft, a clutch, an intermediate gear, an intermediate shaft, an input gear, and an input shaft. The input gear is set on the input shaft through a key, the intermediate gear is set on the intermediate shaft through a key, the intermediate gear and the input gear are meshed, the output gear is set on the output shaft through a key, the output gear and the intermediate gear are meshed, and the output shaft is controlled by the on and off of the clutch.

[0017] In one embodiment, the clutch is a hydraulic multi-plate wet clutch.

[0018] In one embodiment, the output shaft, input shaft, intermediate shaft, output gear, input gear, and intermediate gear are integrated and installed in a flywheel housing assembly, and the flywheel housing assembly is connected to the rear end surface of the cylinder body by bolts.

[0019] In one embodiment, a torsional vibration damper is connected to the first flywheel. The torsional vibration damper is an engine vibration damping system for reducing the influence of engine vibration on the power output device.

[0020] In one of the embodiments, the output shaft is externally connected to a hydraulic winch and a stirring device, and the on and off of the output shaft power is controlled by controlling the on and off of the clutch.

[0021] In one of the embodiments, after the clutch is disengaged, the output gear idles.

[0022] In one of the embodiments, after the clutch is turned on, the output gear transmits power to the output shaft, and the output shaft transmits power to the external device, and the power is output.

[0023] In one embodiment, the engine calculation formula is: ;

[0024] Where: P represents engine power, n represents speed, V represents displacement, ρ represents pressure, and t represents stroke;

[0025] The total power output of the engine is P=P1+P2, P1 is the mechanical energy output to the integrated motor 12 through the first flywheel 1, and P2 is the controllable output transmitted through gears.

[0026] In one embodiment, the present invention further provides a control method for a simplified structure of a dual-flywheel hybrid power split, the control method comprising the following steps:

[0027] When the engine is working, the engine transmits power to the first flywheel, and the torsion damper is used as the engine vibration reduction system to reduce the influence of the engine vibration on the power output device;

[0028] The first flywheel and the torsion damper transmit power to the input shaft, the input shaft transmits power to the second flywheel, and the second flywheel transmits power to the integrated motor to achieve extended-range power output;

[0029] The input shaft transmits power to the input gear, the input gear transmits power to the intermediate gear, the intermediate gear transmits power to the output gear, and the on and off of the output shaft power is controlled by the on and off of the clutch;

[0030] After the clutch is disengaged, the output gear idles;

[0031] After the clutch is connected, the output gear transmits power to the output shaft, and the output shaft transmits power to the external device for power output.

[0032] The simplified power split structure mentioned above uses the engine flywheel housing structure improvement to achieve dual flywheel integrated output. In the range-extending mode, the power output can be increased according to demand to meet the special needs of the vehicle. The modification cost is low and the structure is simple and reliable. Based on the engine integrated motor range-extending solution, the flywheel integration solution is modified to increase the split output port. While generating electricity, the traditional power torque output can be achieved according to demand to meet the needs of some special new energy vehicle models for multiple power outputs. It is a simplified and low-cost solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the cross-sectional structure of the present invention;

[0034] Figure 2 Flow chart of the control method of the present invention.

[0035] 1. First flywheel; 2. Torsional vibration damper; 3. Flywheel housing assembly; 4. Output gear; 5. Output shaft; 6. Clutch; 7. Intermediate gear; 8. Intermediate shaft; 9. Input gear; 10. Input shaft; 11. Second flywheel; 12. Integrated motor. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0041] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0042] like Figure 1 As shown, the present invention provides a simplified structure of dual-flywheel hybrid power splitting, including a first flywheel 1, a torsional damper 2, a flywheel housing assembly 3, an output gear 4, an output shaft 5, a clutch 6, an intermediate gear 7, an intermediate shaft 8, an input gear 9, an input shaft 10, a second flywheel 11 and an integrated motor 12.

[0043] A gear transmission mechanism is arranged at the rear end of the first flywheel 1 and the torsion damper 2 to split the power output of the first flywheel 1, and the energy is transmitted to the output end through the gears for the power output of the new energy extended-range vehicle, and at the same time, the extended-range power output is realized through the second flywheel 11 and the integrated motor 12. The gear transmission mechanism includes an output gear 4, an output shaft 5, a clutch 6, an intermediate gear 7, an intermediate shaft 8, an input gear 9, and an input shaft 10.

[0044] The integrated motor 12 works throughout the whole process, and the power output end can realize power split output through the use of the clutch 6, realize multi-scenario power application, and enrich the output scheme of the extended-range vehicle. Through the transformation of the power output end, the structure is simple and reliable, the transformation cost is low, the power end structure is simplified, and the control is simple.

[0045] One end of the engine is the power input end, and the other end of the external device is the power output end. When the engine is working, the power will be transmitted to the first flywheel 1, and then the first flywheel 1 and the torsional damper 2 will transmit the power to the input shaft 10, and the input shaft 10 will transmit the power to the second flywheel 11, and the second flywheel 11 will transmit the power to the integrated motor 12, and the integrated motor 12 will realize the extended-range power output.

[0046] The input shaft 10 can also transmit power to the input gear 9, the input gear 9 transmits power to the intermediate gear 7, the intermediate gear 7 transmits power to the output gear 4, the output gear transmits power to the output shaft 5, and the output shaft 5 transmits power to the clutch 6. Through the use of the clutch 6, power diversion output can be achieved, multi-scenario power application can be realized, and the output scheme of the extended-range vehicle can be enriched.

[0047] The first flywheel 1 is connected to the output end of the engine crankshaft as a power output for transmitting power. The torsional vibration damper 2 is connected to the first flywheel 1. The torsional vibration damper 2 and the first flywheel 1 have no separation function and are used to offset the impact of the rear power transmission on the engine as an engine vibration reduction system. The engine vibration reduction system is used to reduce the impact of engine vibration on the power output device and protect the vehicle engine. At the same time, it can offset the reverse impact caused by the external device to protect the engine when the shaft torque is output.

[0048] The input shaft 10 is inserted into the first flywheel 1 through a bearing, the input gear 9 is connected to the input shaft 10 through a spline, and the intermediate gear 7 is also connected to the intermediate shaft 8 through a spline. The input gear 9 is often meshed with the intermediate gear 7, and the output gear 4 is often meshed with the intermediate gear 7. The output shaft 5 is connected to the output gear 4 with a bearing in the middle. By controlling the on and off of the clutch 6, the on and off of the power of the output shaft 5 can be controlled. When the engine is running, the input gear 9, the input shaft 10, the intermediate gear 7, the intermediate shaft 8, and the output gear 4 are always rotating. The on and off of the clutch 6 can control whether the output end transmits additional torque to the outside, which is used for external vehicle needs and can match hydraulic winches, mixing equipment, etc.

[0049] The clutch 6 is a hydraulic multi-plate wet clutch.

[0050] The integrated motor 12 is connected to the second flywheel 11 and serves as a power output device for extending the range of power generation to provide power for the vehicle.

[0051] The output shaft 5, the input shaft 10, the intermediate shaft 8, the output gear 4, the input gear 9, the intermediate gear 7 and the related bearings can be integrated and installed in the flywheel housing assembly 3. The flywheel housing assembly 3 is connected to the rear end surface of the cylinder body by bolts, and the input shaft 10 is inserted into the first flywheel 1 by drawing. The second flywheel 11 is connected to the input shaft 10 by bolts, and the integrated motor 12 and the second flywheel 11 are integrated in the flywheel housing assembly 3.

[0052] The integrated motor 12 is used for range-extended power generation to charge the power battery and provide power for the range-extended vehicle.

[0053] The output shaft 5 is connected to an external power device through a clutch 6 when power output is required.

[0054] According to the engine power calculation formula: .

[0055] Where: P represents engine power, n represents speed, V represents displacement, ρ represents pressure, and t represents stroke. The simplified configuration engine outputs a total power P=P1+P2, where P1 is the mechanical energy output to the integrated motor 12 through the first flywheel 1, and P2 is the controllable output transmitted through the gears. When the clutch 6 is disconnected, the gears idle with the engine, and the output power P2=0; when the clutch 6 is connected, the output end outputs mechanical energy, which is calculated according to the speed ratio of the input gear 9 and the output gear 4 of 1:1, and P2 is calculated according to the maximum output power. At different engine speeds, the output power ratios of P1 and P2 are shown in Table 1 Engine Power Distribution Table.

[0056] Table 1 Engine power distribution table

[0057]

[0058] By improving the structure of the engine flywheel housing, dual flywheel integrated output can be achieved. In the extended-range mode, power output can be increased as needed to meet the special needs of the vehicle. The modification cost is low and the structure is simple and reliable.

[0059] Based on the engine integrated motor range extension solution, the flywheel integration solution is modified to add a shunt output port. While generating electricity, the traditional power torque output can be realized according to demand, meeting the needs of some special new energy vehicles for multiple power outputs. This is a simplified low-cost solution. This solution is integrated with the flywheel housing, has a compact layout, and occupies little space in the vehicle. The structure is simple and reliable, and the modification cost is low.

[0060] In one embodiment, Figure 2 As shown, the present invention also provides a control method of a dual-flywheel hybrid power split simplified structure, comprising the following steps:

[0061] When the engine is working, the engine transmits power to the first flywheel 1, and the torsion damper 2 is used as the engine damping system to reduce the influence of the engine vibration on the power output device;

[0062] The first flywheel 1 and the torsional damper 2 transmit power to the input shaft 10, the input shaft 10 transmits power to the second flywheel 11, and the second flywheel 11 transmits power to the integrated motor 12, thereby realizing the extended-range power output;

[0063] The input shaft 10 transmits power to the input gear 9, the input gear 9 transmits power to the intermediate gear 7, the intermediate gear 7 transmits power to the output gear 4, and the on and off of the output shaft 5 is controlled by the on and off of the clutch 6;

[0064] After the clutch 6 is disconnected, the output gear 4 idles;

[0065] After the clutch 6 is connected, the output gear 4 transmits the power to the output shaft 5, and the output shaft 5 transmits the power to the external device, and the power is output.

[0066] By improving the structure of the engine flywheel housing, the integrated output of the dual flywheels can be realized. In the extended range mode, the power output can be increased according to demand to meet the special needs of the vehicle, with low modification cost, simple structure and reliability. By adding a shunt output port, the traditional power torque output can be realized according to demand while generating electricity, meeting the needs of some special new energy models for multiple power outputs, which is a simplified and low-cost method.

[0067] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0068] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A simplified dual-flywheel hybrid power split structure, characterized in that: The power splitting simplified structure comprises: A first flywheel (1), an input shaft (10), a second flywheel (11) and an integrated motor (12); The first flywheel (1) is connected to the output end of the engine crankshaft, the input shaft (10) is inserted into the first flywheel (1) through a bearing, the second flywheel (11) is connected to the input shaft (10), and the integrated motor (12) is connected to the second flywheel (11); A gear transmission mechanism is arranged at the rear end of the first flywheel (1) to achieve power splitting.

2. The simplified power splitting structure according to claim 1, characterized in that: The gear transmission mechanism comprises an output gear (4), an output shaft (5), a clutch (6), an intermediate gear (7), an intermediate shaft (8), an input gear (9), and an input shaft (10); the input gear (9) is arranged on the input shaft (10) via a key; the intermediate gear (7) is arranged on the intermediate shaft (8) via a key; the intermediate gear (7) and the input gear (9) are meshed; the output gear (4) is arranged on the output shaft (5) via a key; the output gear (4) and the intermediate gear (7) are meshed; and the output shaft (5) is controlled to be turned on and off by turning the clutch (6) on and off.

3. The simplified power splitting structure according to claim 2, characterized in that: The clutch (6) is a hydraulic multi-plate wet clutch.

4. The simplified power splitting structure according to claim 2, characterized in that: The output shaft (5), the input shaft (10), the intermediate shaft (8), the output gear (4), the input gear (9), and the intermediate gear (7) are integrated and installed in the flywheel housing assembly (3), and the flywheel housing assembly (3) is connected to the rear end surface of the cylinder body by bolts.

5. The simplified power splitting structure according to claim 1, characterized in that: The first flywheel (1) is connected to a torsional vibration damper (2), which is an engine vibration damping system used to reduce the impact of engine vibration on the power output device.

6. The simplified power splitting structure according to claim 1, characterized in that: The output shaft (5) is externally connected to a hydraulic winch and a stirring device, and the on and off of the power of the output shaft (5) is controlled by controlling the on and off of the clutch (6).

7. The simplified power splitting structure according to claim 6, characterized in that: After the clutch (6) is disconnected, the output gear (4) idles.

8. The simplified power splitting structure according to claim 7, characterized in that: After the clutch (6) is turned on, the output gear (4) transmits power to the output shaft (5), and the output shaft (5) transmits power to an external device, thereby outputting power.

9. The simplified power splitting structure according to claim 1, characterized in that: Engine calculation formula: ; Where: P represents engine power, n represents speed, V represents displacement, ρ represents pressure, and t represents stroke; The total power generated by the engine is P=P1+P2, where P1 is the mechanical energy output to the integrated motor 12 through the first flywheel (1), and P2 is the controllable output transmitted through the gears.

10. A control method for a dual-flywheel hybrid power split simplified structure, using the power split simplified structure according to any one of claims 1 to 9, characterized in that: The control method comprises the following steps: When the engine is working, the engine transmits power to the first flywheel (1), and the torsion damper (2) is used as an engine vibration reduction system to reduce the influence of engine vibration on the power output device; The first flywheel (1) and the torsional vibration damper (2) transmit power to the input shaft (10), the input shaft (10) transmits power to the second flywheel (11), and the second flywheel (11) transmits power to the integrated motor (12), thereby achieving extended-range power output; The input shaft (10) transmits power to the input gear (9), the input gear (9) transmits power to the intermediate gear (7), the intermediate gear (7) transmits power to the output gear (4), and the on and off of the power of the output shaft (5) is controlled by the on and off of the clutch (6); After the clutch (6) is disconnected, the output gear (4) idles; After the clutch (6) is turned on, the output gear (4) transmits power to the output shaft (5), and the output shaft (5) transmits power to an external device, and the power is output.

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