Hybrid combine harvester and control method

Abstract

The application provides a kind of hybrid combine and control method, it is related to agricultural machinery technical field.The hybrid combine includes hybrid power system, header system, cleaning system, threshing system, walking system and control system;Hybrid power system includes power battery pack, engine, clutch and generator, engine is connected with generator through power take-off and is connected with power take-off shaft PTO through clutch, power take-off shaft PTO is connected with header system and cleaning system respectively through transmission device, generator and power battery pack are connected with walking motor, drum motor, fan motor and reel motor respectively through power distribution device, control system is used to control the work of power battery pack, engine and generator.Simplify transmission system, high operation efficiency, fast response speed, strong overload capacity, reduce labor intensity, more energy saving.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of agricultural machinery, in particular to a hybrid combine harvester and a control method. BACKGROUND

[0002] Agricultural machinery equipment is an important foundation of modern agriculture. With the development of new production modes and new production modes of modern agriculture, higher and higher requirements are put forward for production efficiency, environmental protection, green energy saving and other aspects. The traditional combine harvester adopts the mode of diesel engine + mechanical transmission, and its power transmission device is through the output of the engine through multi-stage transmission, which has many components, long path, low transmission efficiency and high failure rate; under different working conditions, the working parameters cannot be accurately adjusted in real time, which makes the machine operation performance unstable, the energy utilization rate is low, and the fuel consumption and carbon emission of the whole machine are greatly increased.

[0003] A series oil-electric hybrid combine harvester provided in the prior art inputs the power of the engine into the power take-off shaft PTO and the generator through the transfer case, and a clutch is arranged between the generator and the transfer case. By cutting off the power driving the generator, all the power of the engine is transmitted to the power take-off shaft PTO to drive the cylinder of the threshing system and the fan of the cleaning system. If there is no such clutch, it will affect the working efficiency of the cylinder of the threshing system and the fan of the cleaning system. Therefore, the prior art has the following disadvantages:

[0004] (1) The generator and the power take-off shaft PTO are connected through a transfer case, and a clutch is arranged between the generator and the transfer case, which has a complex structure and the transfer case increases the efficiency loss;

[0005] (2) The cylinder and the fan of the cleaning system are directly connected with the engine through a transmission device, and the real-time feeding amount cannot be detected. When the feeding amount is too large, the engine speed decreases or even stops, which greatly reduces the working efficiency and increases the labor intensity;

[0006] (3) The cylinder with the largest power of the feeding system is directly driven by the engine through the power take-off shaft PTO, and the real-time power of the cylinder cannot be detected. The power or speed of other systems cannot be adjusted through the real-time power of the cylinder, so that the current engine power cannot be maximized, which reduces the working efficiency and increases the energy consumption. SUMMARY

[0007] The present application aims to provide a hybrid combine harvester and a control method to solve the problems in the prior art.

[0008] To achieve the above object, in a first aspect, the application provides a hybrid combine harvester, comprising a hybrid power system, a header system, a cleaning system, a threshing system, a walking system and a control system;

[0009] The hybrid power system comprises a power battery pack, an engine, a clutch and a generator, the engine is connected with the generator through a power take-off port and connected with a power take-off shaft PTO through the clutch, and the generator is connected with the power battery pack, wherein the power take-off shaft PTO is connected with the header system and the cleaning system through a transmission device respectively, and the generator and the power battery pack are connected with a walking motor in the walking system, a cylinder motor for driving a threshing cylinder to rotate in the threshing system, a fan motor in the cleaning system and a reel motor in the header system through a power distribution device respectively, and the power distribution device is used for on-demand distribution of electric energy provided by the generator and the power battery pack.

[0010] The control system is used for controlling the working of the power battery pack, the engine and the generator.

[0011] As a further improvement of the above technical solution:

[0012] In combination with the first aspect, in a possible implementation, the control system comprises:

[0013] a motor controller connected with the power distribution device, the generator and the power battery pack respectively;

[0014] a vehicle controller connected with the engine, the power battery pack and the motor controller; and

[0015] a sensor used for detecting the rotating speed of the power take-off shaft PTO and feeding back a rotating speed signal to the motor controller and the vehicle controller, and the motor controller and the vehicle controller are used for controlling the power compensation of the corresponding generator, engine and power battery pack according to the rotating speed signal, so as to adjust the torque and rotating speed of the walking motor, the cylinder motor, the fan motor and the reel motor.

[0016] In combination with the first aspect, in a possible implementation, the header system further comprises a reel, a cutter, a header auger and a conveyor belt, the reel is connected with the reel motor, and the cutter, the header auger and the conveyor belt are connected with the power take-off shaft PTO.

[0017] With reference to the first aspect, in a possible implementation manner, the cleaning system further comprises a fan, a cleaning sieve, a chaff stirrer and a grain stirrer, the fan is connected with the fan motor, and the cleaning sieve, the chaff stirrer and the grain stirrer are connected with the power take-off (PTO).

[0018] With reference to the first aspect, in a possible implementation manner, the cleaning sieve comprises a shaking plate and an upper sieve, a lower sieve and a tail sieve which are sequentially arranged on the shaking plate, and the shaking plate is connected with the power take-off (PTO).

[0019] With reference to the first aspect, in a possible implementation manner, the hybrid combine harvester further comprises a straw crushing system, and the straw crushing system is connected with the power take-off (PTO) through the transmission device.

[0020] With reference to the first aspect, in a possible implementation manner, the traveling system further comprises a traveling transmission, a left driving wheel and a right driving wheel, the traveling transmission is connected with the traveling motor, and the traveling transmission is drivingly connected with the left driving wheel and the right driving wheel.

[0021] With reference to the first aspect, in a possible implementation manner, the hybrid combine harvester further comprises a vehicle frame and a grain storage box arranged on the vehicle frame.

[0022] To achieve the above object, the second aspect provides a control method of a hybrid combine harvester, which applies the hybrid combine harvester provided in the first aspect.

[0023] starting the engine through the generator reverse traction;

[0024] driving the header system and the cleaning system to work by the power output by the engine through the power take-off (PTO);

[0025] distributing the electric energy output by the power battery pack and the generator through the power distribution device according to needs to drive the traveling motor, the cylinder motor, the fan motor and the reel motor to work;

[0026] monitoring the torque and rotating speed of the traveling motor, the cylinder motor, the fan motor and the reel motor, controlling the rotating speed and torque of the generator, controlling the electric quantity of the power battery pack in a preset range, and controlling the engine to maintain in a high-efficiency working interval according to the charging and discharging of the power battery pack.

[0027] In combination with the second aspect, in a possible implementation, the power currently consumed by the drum motor is calculated according to the torque and rotational speed of the drum motor, and in the case that the power of the drum motor is greater than a preset value, the rotational speed and torque of the traveling motor are reduced, and the torque and rotational speed of the fan motor and the reel motor are adjusted to adapt.

[0028] Compared with the prior art, the application has the following beneficial effects:

[0029] The application provides a hybrid combine harvester and a control method, wherein the hybrid combine harvester outputs electric energy through a generator connected to an engine and a power battery set to drive corresponding traveling motors, drum motors, fan motors and reel motors to work, thereby simplifying a transmission system, improving work efficiency and response speed, and reducing overall energy consumption.

[0030] The engine is directly connected to the generator without a clutch, so that the engine can be directly started by reverse dragging the engine through the generator, the engine power output is realized by controlling the torque of the generator, the structure is simplified, the cost is reduced, the engine is started faster and more stably.

[0031] After the traveling motors, the drum motors, the fan motors and the reel motors are started, the rotational speed and torque of the traveling motors, the fan motors and the reel motors are adjusted by monitoring the real-time output power of the drum motors to avoid the clogging of the grain drum in the threshing system, thereby improving work efficiency and reducing the failure rate; meanwhile, the traveling speed is adjusted in real time according to the power of the grain drum motor, so that the traveling speed does not need to be controlled by an operator during the operation process, and the labor intensity is greatly reduced.

[0032] By cooperatively controlling the power of the drum motor, the fan motor, the reel motor and the traveling motor, controlling the torque of the generator and the rotational speed of the engine, and adjusting the output current of the power battery set, the engine can work in the high-efficiency interval for a long time, the problem of high engine specific fuel consumption of the combine harvester under different working conditions such as harvesting (crop states: dry, semi-dry, green, wet, etc.), unloading, field conversion, etc. is solved, and the comprehensive work energy consumption of the combine harvester is reduced.

[0033] Other features and advantages of the application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0034] The accompanying drawings are included to provide a further understanding of the application, and constitute a part of the specification, and together with the following specific embodiments, serve to explain the application. It should be understood that the following drawings only show some embodiments of the application, and therefore should not be considered as limiting the scope, and other related drawings can be obtained by those skilled in the art without paying creative labor. In the drawings:

[0035] Figure 1 A principle diagram of a hybrid power combine harvester provided by the embodiment of the application is shown;

[0036] Figure 2 A front view of the hybrid power combine harvester provided by the embodiment of the application is shown;

[0037] Figure 3 A top view of the hybrid power combine harvester provided by the embodiment of the application is shown;

[0038] Figure 4 A rear view of the hybrid power combine harvester provided by the embodiment of the application is shown;

[0039] Figure 5 A partial view of the hybrid power combine harvester provided by the embodiment of the application is shown;

[0040] Figure 6 A control logic diagram of the generator anti-drag engine starting control mode of the hybrid power combine harvester provided by the embodiment of the application is shown;

[0041] Figure 7 A control logic diagram of the cylinder anti-blocking control mode of the hybrid power combine harvester provided by the embodiment of the application is shown;

[0042] Figure 8 A control logic diagram of the coordinated control and energy consumption optimal control mode of the hybrid power combine harvester provided by the embodiment of the application is shown.

[0043] Explanation of reference signs:

[0044] 10, header system; 11, header auger; 12, cutter; 13, conveyor belt; 14, reel; 14a, reel motor;

[0045] 20, cleaning system; 21, residue auger; 22, grain auger; 23, cleaning sieve; 23a, shaking plate; 23b, upper sieve; 23c, lower sieve; 23d, tail sieve; 24, fan; 24a, fan motor;

[0046] 30, engine; 31, clutch; 32, power take-off (PTO); 33, generator; 34, power battery pack;

[0047] 40, control system; 41, vehicle controller; 42, sensor; 43, motor controller;

[0048] 50, threshing system; 51, threshing cylinder; 51a, cylinder motor;

[0049] 60, walking system; 61a, walking motor; 61b, walking transmission; 61c, left drive wheel; 61d, right drive wheel;

[0050] 70, grass chopping system; 71, chopper drum;

[0051] 81, grain storage tank. DETAILED DESCRIPTION

[0052] The specific implementation of the embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the embodiments of the present application, and is not intended to limit the embodiments of the present application.

[0053] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0054] In the embodiments of the present application, it is understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0055] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0056] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0057] The present application will be described in detail below with reference to the accompanying drawings and in combination with exemplary embodiments.

[0058] Embodiments

[0059] Referring to Figure 1 The embodiment provides a hybrid combine harvester. The hybrid combine harvester comprises a frame, a hybrid power system arranged on the frame, a header system 10, a cleaning system 20, a threshing system 50, a walking system 60 and a control system 40.

[0060] The hybrid power system comprises a power battery pack 34, an engine 30, a clutch 31 and a generator 33. The engine 30 and the power battery pack 34 are energy sources of the whole machine, and the clutch 31, a power take-off, the generator 33 and a power take-off shaft PTO 32 jointly form the hybrid power system of the whole machine. It can be understood that in the embodiment, the power of the engine 30 is selectively transmitted to the power take-off shaft PTO 32 through the clutch 31 for external output and to the generator 33 and the power battery pack 34 through a power take-off for external output, forming a hybrid power system.

[0061] The engine 30 is connected to the generator 33 through a power take-off and connected to the power take-off shaft PTO 32 through the clutch 31, so that the power output by the engine 30 can be selectively transmitted to the power take-off shaft PTO 32 through the clutch 31. The power take-off shaft PTO 32 is drivingly connected to the header system 10 and the cleaning system 20 through a transmission device. In the embodiment, the power take-off shaft PTO 32 is not connected to the reel 14 in the header system 10 and the fan 24 in the cleaning system 20.

[0062] The generator 33 is connected to the power battery pack 34, and the power battery pack 34 can be charged through the generator 33. The power battery pack 34 can also be charged through an external power source. Further, the generator 33 and the power battery pack 34 are both connected to a walking motor 61a in the walking system 60, a cylinder motor 51a in the threshing system 50, a fan motor 24a in the cleaning system 20 and a reel motor 14a in the header system 10 through a power distribution device, and the power distribution device is used for on-demand distribution of the electric energy provided by the generator 33 and the power battery pack 34 to drive the corresponding walking motor 61a, cylinder motor 51a, fan motor 24a and reel motor 14a to work. The control system 40 is used for controlling the working of the power battery pack 34, the engine 30 and the generator 33.

[0063] The control system 40 includes a motor controller 43, a vehicle controller 41 and a sensor 42. The motor controller 43 is connected to the power distribution device, the generator 33 and the power battery pack 34 respectively. The vehicle controller 41 is connected to the engine 30. The sensor 42 is used to detect the rotating speed of the power take-off shaft PTO 32 and feed the rotating speed signal to the motor controller 43 and the vehicle controller 41, which are used to control the power compensation of the corresponding generator 33, engine 30 and power battery pack 34 according to the rotating speed signal.

[0064] Please refer to Figure 2 、 Figure 3 、 Figure 4 and Figure 5 The header system 10 further includes a beater 14, a cutter 12, a header auger 11 and a conveyor belt 13. The beater 14 is connected to a beater motor 14a and driven by the beater motor 14a to work. The cutter 12, the header auger 11 and the conveyor belt 13 are all connected to the power take-off shaft PTO 32 and driven by the power take-off shaft PTO 32 to work.

[0065] The cleaning system 20 further includes a fan 24, a cleaning sieve 23, a chaffer 21 and a kernel auger 22. The fan 24 is connected to a fan motor 24a and driven by the fan motor 24a to work. The cleaning sieve 23, the chaffer 21 and the kernel auger 22 are all connected to the power take-off shaft PTO 32 and driven by the power take-off shaft PTO 32 to work.

[0066] Further, in the embodiment, the cleaning sieve 23 includes a shaking plate 23a and an upper sieve 23b, a lower sieve 23c and a tail sieve 23d arranged on the shaking plate 23a in sequence. The shaking plate 23a is connected to the power take-off shaft PTO 32, and the power take-off shaft PTO 32 can drive the shaking plate 23a to vibrate at a preset frequency.

[0067] The hybrid combine harvester further includes a grass chopping system 70, wherein the grass chopping system 70 includes a chopper drum 71 which is drivingly connected to the power take-off shaft PTO 32 by a transmission device, so that the chopper drum 71 is indirectly provided by the engine 30 directly.

[0068] The threshing system 50 further includes a threshing drum 51 which is connected to a drum motor 51a and driven by the drum motor 51a to work.

[0069] The walking system 60 further comprises a walking transmission 61b, a left driving wheel 61c and a right driving wheel 61d. The walking transmission 61b is connected with the walking motor 61a, and the walking transmission 61b is drivingly connected with the left driving wheel 61c and the right driving wheel 61d. Thus, the power output by the walking motor 61a is firstly transmitted to the walking transmission 61b, and then the walking transmission 61b drives the left driving wheel 61c and the right driving wheel 61d to rotate synchronously, so as to drive the hybrid combine harvester to move.

[0070] In the embodiment, the hybrid combine harvester further comprises a grain storage tank 81 arranged on the frame, and the grain storage tank 81 is used to collect the grain processed by the threshing system 50.

[0071] Further, the embodiment also provides a control method of the hybrid combine harvester, which applies the hybrid combine harvester provided above. The control method of the hybrid combine harvester comprises the following steps.

[0072] starting the engine 30 by the generator 33 in reverse traction;

[0073] driving the header system 10, the cleaning system 20 and the straw crushing system 70 to work by the power output shaft PTO 32 and the power output by the engine 30;

[0074] distributing the electric energy output by the power battery pack 34 and the generator 33 according to the needs by the power distribution device, so as to drive the walking motor 61a, the drum motor 51a, the fan motor 24a and the reel motor 14a to work;

[0075] monitoring the torque and the rotating speed of the walking motor 61a, the drum motor 51a, the fan motor 24a and the reel motor 14a, controlling the rotating speed and the torque of the generator 33, so as to control the electric quantity of the power battery pack 34 in a preset range, and controlling the engine 30 to maintain in the high-efficiency working interval according to the charging and discharging of the power battery pack 34.

[0076] Please refer to Figure 6The control logic of the above-mentioned "starting the engine 30 by reverse traction of the generator 33" is as follows: after the vehicle controller 41 detects the key power-on signal, each system (the hybrid system, the header system 10, the cleaning system 20, the threshing system 50, the walking system 60, the chaff cutting system 70, and the control system 40) starts self-checking, and after no fault is found, the vehicle controller 41 issues a high-voltage instruction to the power battery pack 34, and the power battery pack 34 completes the high-voltage charging. After detecting the key start signal, the vehicle controller 41 requests the generator 33 to enter the torque mode with a target speed of 450 rpm, and starts timing. The generator 33 drives the engine 30 to rotate, and when the speed of the engine 30 is greater than 400 rpm, fuel injection is started. When the speed of the engine 30 is greater than 700 rpm, the engine 30 is successfully started, the vehicle controller 41 requests the generator 33 to unload the torque, the generator 33 exits the speed mode, and rotates with the engine 30. At this time, the engine 30 drives the generator 33 to generate electricity.

[0077] Further, the control method of the hybrid combine harvester further comprises:

[0078] According to the torque and speed of the cylinder motor 51a, the current power consumption of the cylinder motor 51a is calculated. In the case where the power of the cylinder motor 51a is greater than a preset value, the speed and torque of the walking motor 61a are reduced, and the torque and speed of the fan motor 24a and the reel motor 14a are adjusted for adaptation.

[0079] Please refer to Figure 7 In particular, the vehicle controller 41 collects the current speed and torque of the cylinder motor 51a in real time, so as to calculate the current power of the cylinder motor 51a. The current power of the cylinder motor 51a is compared with a preset power. When the power of the cylinder motor 51a is within the preset range, the vehicle controller 41 requests the walking motor 61a, the reel motor 14a, and the fan motor 24a to maintain the current speed. When the power of the cylinder motor 51a is less than the preset value, the vehicle controller 41 requests the walking motor 61a, the reel motor 14a, and the fan motor 24a to increase the speed and increase the feeding amount. When the power of the cylinder motor 51a is greater than the preset value, the vehicle controller 41 requests the walking motor 61a, the reel motor 14a, and the fan motor 24a to reduce the speed and reduce the feeding amount. Through the above control mode, the clogging of the threshing cylinder 51 can be prevented.

[0080] Please refer to Figure 8 The current working condition of the machine is determined by the on-off state of the clutch 31 between the engine 30 and the power take-off shaft PTO 32:

[0081] When clutch 31 is engaged, it indicates that the hybrid combine harvester is in harvesting operation; when clutch 31 is disengaged, it indicates that the hybrid combine harvester is in unloading or transfer mode. During harvesting, due to the speed requirements of components such as the grain auger 22 and the shredder drum 71, the engine 30 needs to run at a fixed 2200 rpm. The operator sets the operating speed through the operating device, and the vehicle controller 41 controls the travel motor 61a to run at the set target speed. At the same time, it controls the speed of the reel motor 14a and the blower motor 24a to be linearly proportional to the speed of the travel motor 61a. When the operating speed is low, the speed of the reel motor 14a and the blower motor 24a also decreases accordingly, avoiding high energy consumption caused by high speed when the feed rate is low. During operation, the speed and torque of the drum motor 51a fluctuate significantly depending on the crop's dryness (dry, semi-dry, green, wet) and the vehicle speed. The vehicle controller 41 monitors the speed and torque of the drum motor 51a in real time, calculates its power, and compares it with a preset power. When the real-time power of the drum motor 51a is within the preset range (a power range set between maximum and minimum), the vehicle controller 41 controls the travel motor 61a to maintain its current speed. When the power of the drum motor 51a is less than the preset value, the vehicle controller 41 requests the travel motor 61a, reel motor 14a, and blower motor 24a to increase their speeds, thereby increasing the feed rate. When the power of the drum motor 51a is greater than the preset value, the vehicle controller 41 requests the travel motor 61a, reel motor 14a, and blower motor 24a to decrease their speeds, thereby reducing the feed rate. This control method prevents the threshing drum 51 from clogging. In summary, by adjusting the speed of the travel motor 61a, a constant maximum feed rate is maintained in the hybrid combine harvester.

[0082] When the hybrid combine harvester is unloading grain or moving to another location, the clutch 31 is disengaged, and the engine 30 operates at an adjustable speed. In unloading and moving operation modes, the vehicle controller 41 calculates the current load power requirement and controls the output power of the generator 33. Since the power requirement for unloading and speed operation is relatively small compared to the rated power of the engine 30, the engine 30 can be controlled to operate at a lower speed.

[0083] The whole vehicle controller 41 determines the optimal fuel consumption working interval of the engine 30 by calculating the power of the current walking motor 61a, the reel motor 14a, the drum motor 51a and the fan motor 24a, combining the current SOC value of the power battery pack 34 and the opening and closing state of the clutch 31, and looking up the engine 30 map. When the SOC of the power battery pack 34 is higher than the preset SOC value, the output power of the generator 33 is reduced by the whole vehicle controller 41; when the SOC of the power battery pack 34 is lower than the preset SOC value, the output power of the generator 33 is increased by the whole vehicle controller 41, so that the engine 30 works in the current demand power and the lowest fuel consumption working interval, thereby reducing the energy consumption of the whole machine of the hybrid combine harvester.

[0084] Compared with the prior art, in the hybrid combine harvester provided in the embodiment, the engine 30 can be directly started by the generator 33, the engine 30 has faster starting response and lower cost. The motor is directly driven in the threshing system 50, the walking system 60, the fan 24 and the reel 14. In the working mode, the output torque (power) of the drum motor 51a is automatically adjusted according to the dry, semi-dry, green and wet states of crops, and the walking speed, the reel 14 and the fan 24 are automatically adjusted following the power change of the drum motor 51a. The harvesting speed is more reasonable in different working conditions, the threshing drum 51 is prevented from being blocked, and the maximum power of the engine 30 can be exerted.

[0085] Further, the power distribution device is arranged between the generator 33 and the power battery pack 34. The generator 33 is directly connected to the motors (the walking motor 61a, the drum motor 51a, the fan motor 24a and the reel motor 14a) of the systems and sub-components through the power distribution device, and always works with the power battery pack 34 according to the power demand. Through the charging and discharging of the power battery pack 34, the energy is reasonably and effectively distributed from the multiple power sources to the multiple target loads, that is, the engine 30 works in the lowest specific fuel consumption interval of the current load demand, and the power of the engine 30 is maximized to improve the working efficiency.

[0086] It should be noted that the transmission device described above is a common mechanical transmission device, including but not limited to gear transmission, chain wheel transmission and belt wheel transmission.

[0087] The optional embodiments of the embodiments of the application are described in detail above with reference to the drawings, but the embodiments of the application are not limited to the specific details in the above embodiments. Various simple modifications can be made to the technical solutions of the embodiments of the application within the technical concept of the embodiments of the application, and these simple modifications all belong to the protection scope of the embodiments of the application.

[0088] It should be further noted that various specific technical features described in the above specific embodiments can be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described again in the embodiments of the present application.

[0089] In addition, various different embodiments of the present application can be combined with each other as long as they do not conflict with each other, and they should also be considered as disclosed in the present application.

Claims

1. A hybrid power combine harvester, characterized in that, It includes a hybrid power system, a header system (10), a cleaning system (20), a threshing system (50), a walking system (60), and a control system (40). The hybrid power system includes a power battery pack (34), an engine (30), a clutch (31), and a generator (33). The engine (30) is connected to the generator (33) via a power take-off port and to the power output shaft PTO (32) via the clutch (31). The generator (33) is connected to the power battery pack (34). The power output shaft PTO (32) is connected to the header system (10) and the cleaning system (20) via a transmission device. The generator (33) and the power battery pack (34) are connected to the walking motor (61a) in the walking system (60), the drum motor (51a) that drives the threshing drum (51) in the threshing system (50), the fan motor (24a) in the cleaning system (20), and the reel motor (14a) in the header system (10) via a power distribution device. The power distribution device is used to distribute the electrical energy provided by the generator (33) and the power battery pack (34) on demand. The control system (40) is used to control the operation of the power battery pack (34), the engine (30) and the generator (33); The header system (10) further includes a reel (14), which is connected to a reel motor (14a), and the cleaning system (20) further includes a blower (24), which is connected to a blower motor (24a).

2. The hybrid power combine harvester according to claim 1, characterized in that, The control system (40) includes: The motor controller (43) is connected to the power distribution device, the generator (33) and the power battery pack (34) respectively. The vehicle controller (41) is connected to the engine (30), the power battery pack (34), and the motor controller (43); and Sensor (42) is used to detect the rotational speed of the power output shaft PTO (32) and feed the rotational speed signal back to the motor controller (43) and the vehicle controller (41). The motor controller (43) and the vehicle controller (41) are used to control the corresponding generator (33), engine (30) and power battery pack (34) to perform power compensation according to the rotational speed signal, so as to adjust the torque and rotational speed of the walking motor (61a), the roller motor (51a), the fan motor (24a) and the reel motor (14a).

3. The hybrid power combine harvester according to claim 1, characterized in that, The cutting platform system (10) also includes a cutter (12), a cutting platform auger (11), and a conveyor belt (13), all of which are connected to the power output shaft PTO (32).

4. The hybrid power combine harvester according to claim 1, characterized in that, The cleaning system (20) also includes a cleaning screen (23), an impurity auger (21), and a grain auger (22), all of which are connected to the power output shaft PTO (32).

5. The hybrid power combine harvester according to claim 4, characterized in that, The cleaning screen (23) includes a shaking plate (23a) and an upper screen (23b), a lower screen (23c) and a tail screen (23d) arranged sequentially on the shaking plate (23a). The shaking plate (23a) is connected to the power output shaft PTO (32).

6. The hybrid power combine harvester according to claim 1, characterized in that, The hybrid combined harvester also includes a grass-chopping system (70), which is connected to the power output shaft PTO (32) via the transmission device.

7. The hybrid power combine harvester according to claim 1, characterized in that, The walking system (60) further includes a walking gearbox (61b), a left drive wheel (61c) and a right drive wheel (61d). The walking gearbox (61b) is connected to the walking motor (61a), and the walking gearbox (61b) drives the left drive wheel (61c) and the right drive wheel (61d).

8. The hybrid power combine harvester according to any one of claims 1-7, characterized in that, The hybrid combined harvester also includes a frame and a grain storage bin (81) mounted on the frame.

9. A control method for a hybrid power combine harvester, characterized in that, The hybrid power combine harvester according to any one of claims 1-8 is used, and the control method of the hybrid power combine harvester includes: The engine (30) is started by reverse dragging the generator (33); The power output from the engine (30) via the power output shaft PTO (32) drives the cutting platform system (10) and the cleaning system (20) to work. The power distribution device distributes the electrical energy output from the power battery pack (34) and the generator (33) as needed to drive the corresponding walking motor (61a), the roller motor (51a), the fan motor (24a) and the reel motor (14a). Monitor the torque and speed of the walking motor (61a), the drum motor (51a), the fan motor (24a) and the reel motor (14a), control the speed and torque output of the generator (33) to keep the power battery pack (34) within a preset range, and control the engine (30) to maintain it in the high-efficiency working range according to the charging and discharging of the power battery pack (34).

10. The control method for a hybrid power combine harvester according to claim 9, characterized in that, The control method for the hybrid power combine harvester also includes: Based on the torque and speed of the roller motor (51a), the current power consumed by the roller motor (51a) is calculated. If the power of the roller motor (51a) is greater than the preset value, the speed and torque of the walking motor (61a) are reduced, and the torque and speed of the fan motor (24a) and the reel motor (14a) are adjusted for adaptation.

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