Extended-range hybrid power electrically-driven harvester

Abstract

The utility model relates to the technical field of harvesters, in particular to an extended-range hybrid electric-driven harvester which comprises an extended-range power supply system, a power battery power supply system, a power management system and a power utilization system, the extended-range power supply system and the power battery power supply system are connected to the power management system in parallel, and the power management system is connected with the power utilization system. The two power supply systems are used as a source of energy of the whole harvester, the power management system is used for distributing electric power, and the power utilization system is used for driving all working parts of the extended-range hybrid power electric drive harvester to work. Therefore, double power supplies of extended-range power supply and power battery are adopted to provide power for the whole machine, sufficient endurance operation time is ensured, a motor type can save fuel oil, reduce carbon emission and improve operation precision, the electric power framework is a brand-new electric power framework, and a transmission path is simplified through motor direct drive, so that oil consumption and the failure rate of a transmission system are reduced, and the service life of the whole machine is prolonged. And the direct-drive response speed of the motor is high, and the speed regulation range is wide.

Description

Technical Field

[0001] This application relates to the field of harvester technology, and in particular to a range-extended hybrid electric harvester. Background Technology

[0002] Currently, new energy electric-driven harvesters are easier to automate, become autonomous, and become intelligent. They are characterized by easy operation quality detection and high level of intelligent control, which can bring many benefits such as energy saving and emission reduction, precision operation, harvesting operation information perception and intelligent regulation. They are of great significance for improving the quality and efficiency of agriculture.

[0003] Traditional harvesters mostly use diesel engines for power output, which drives the intermediate shaft via a belt and pulleys. The shaft then drives the electrical components such as the header module, threshing module, cleaning module, and unloading module through pulleys, belts, gears, and chains to harvest grain. However, using a single power source not only affects the quality of operation due to variations in ground speed and engine speed, but also results in high energy consumption, large pollution emissions, and poor operational precision. Utility Model Content

[0004] The purpose of this application is to provide a range-extended hybrid electric-drive harvester, which to some extent solves the technical problems of existing harvesters that mostly use a single power source, whose work quality is affected by changes in ground forward speed and engine speed, and which have disadvantages such as high energy consumption, large pollution emissions, and poor work accuracy.

[0005] This application provides a range-extended hybrid electric harvester, including: a range-extended power supply system, a power battery power supply system, a power management system, and an electrical system; wherein, the range-extended power supply system and the power battery power supply system are connected in parallel to the power management system, the power management system is also connected to the electrical system, and the range-extended power supply system and the power battery power supply system are used as the energy source for the entire vehicle, the power management system is used to allocate electrical power, and the electrical system is used to drive the various working components of the range-extended hybrid electric harvester to complete the harvesting operation.

[0006] In the above technical solution, the range-extended power supply system further includes an engine, a generator, and an AC-DC converter; wherein the engine is connected to the generator to form a range extender; the input terminal of the AC-DC converter is connected to the three-phase line of the generator, and the output terminal of the AC-DC converter is connected to the power management system.

[0007] In any of the above technical solutions, the power battery power supply system further includes a power battery, and the positive and negative terminals of the power battery are respectively connected to the power management system.

[0008] In any of the above technical solutions, the power battery power supply system further includes a DC-DC converter, the input terminals of which are respectively connected to the positive and negative terminals of the power battery, and the output terminal of which is connected to the power management system.

[0009] In any of the above technical solutions, the power management system further includes a power distribution unit (PDU), the output terminals of the range-extended power supply system and the power battery power supply system are all connected in parallel to the input terminal of the power distribution unit (PDU) via a DC bus, and the output terminal of the power distribution unit (PDU) is connected to the power consumption system.

[0010] In any of the above technical solutions, the power system further includes a cutting table module drive system, and the cutting table module drive system includes a cutting table motor driver, a cutting table module drive motor, and a cutting table mechanism. The cutting table motor driver is connected to the input terminal of the cutting table module drive motor, and the output terminal of the cutting table module drive motor is connected to the cutting table mechanism.

[0011] The cutter module drive system also includes a cutter module reducer, and the output end of the cutter module drive motor is connected to the cutter mechanism through the cutter module reducer.

[0012] In any of the above technical solutions, the power system further includes a separation module drive system, and the separation module drive system includes a separation motor driver, a separation module drive motor, and a separation mechanism. The separation motor driver is connected to the input terminal of the separation module drive motor, and the output terminal of the separation module drive motor is connected to the separation mechanism.

[0013] The separation module drive system also includes a separation module reducer, and the output end of the separation module drive motor is connected to the separation mechanism through the separation module reducer.

[0014] In any of the above technical solutions, the power system further includes a walking drive system, which includes three walking motor drivers, three walking module drive motors, two wheel-side reducers, and a walking mechanism; wherein, the three walking motor drivers are respectively connected to the input terminals of the three corresponding walking module drive motors.

[0015] The outputs of two of the walking module drive motors directly drive the left and right rear wheels of the walking mechanism through two corresponding wheel-side reducers, respectively. The other walking module drive motor directly drives the gearbox, and the gearbox drives the front wheels of the walking mechanism through the axle.

[0016] In any of the above technical solutions, the power system further includes a grain unloading module drive system, and the grain unloading module drive system includes a grain unloading module driver, a grain unloading module drive motor, and a grain unloading mechanism. The grain unloading module driver is connected to the input terminal of the grain unloading module drive motor, and the output terminal of the grain unloading module drive motor is connected to the grain unloading mechanism.

[0017] In any of the above technical solutions, the power system further includes a cleaning module drive system, and the cleaning module drive system includes a cleaning motor driver, a cleaning module drive motor, and a cleaning mechanism. The cleaning motor driver is connected to the input end of the cleaning module drive motor, and the output end of the cleaning module drive motor is connected to the cleaning mechanism.

[0018] The cleaning module drive system also includes a cleaning module reducer, and the output end of the cleaning module drive motor is connected to the cleaning mechanism through the cleaning module reducer.

[0019] In any of the above technical solutions, the range-extended hybrid electric harvester further includes a cooling system, which includes a water pump, a radiator, a water tank, and water pipes. Other systems included in the electrical system are connected in series with the water pump through the water pipes and then connected in parallel to the radiator and the water tank.

[0020] In any of the above technical solutions, the power system further includes a DC-DC step-down system, and the DC-DC step-down system includes a DC-DC step-down module, and the input terminal of the DC-DC step-down module is connected to the output terminal of the power management system, and the output terminal of the DC-DC step-down module is connected to the 24V system control power of the whole machine.

[0021] Compared with the prior art, the beneficial effects of this application are as follows:

[0022] This application provides a novel range-extended hybrid electric harvester that uses a dual power source of range-extended power supply and a power battery to provide power to the whole machine, ensuring sufficient operating time. Moreover, the electric motor type can save fuel, reduce carbon emissions, and improve operating accuracy. It is a completely new electric architecture. Furthermore, the direct drive of the motor simplifies the transmission path, thereby reducing fuel consumption and transmission system failure rate. The direct drive of the motor has a fast response speed and a wide speed range, and can realize stepless speed change and automatic adjustment of drum speed, fan speed, and reel speed according to the vehicle speed and feed rate. In addition, the direct drive of the motor has the ability to output twice the torque instantaneously, making it easier to get out of the dirt, climb slopes and cross ridges, and improve the efficiency of operation and relocation. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a range-extended hybrid electric harvester provided in an embodiment of this application;

[0025] Figure 2 A schematic diagram of the structure of the range-extended power supply system, the power battery power supply system, the power management system, and the power consumption system provided in the embodiments of this application;

[0026] Figure 3 This is a schematic diagram of the heat dissipation system provided in an embodiment of this application.

[0027] Figure label:

[0028] 1-Engine, 2-Generator, 3-AC-DC converter, 4-Power battery, 5-DC-DC converter, 6-Power distribution unit (PDU), 7-Heading head motor driver, 8-Heading head module drive motor, 9-Heading head module reducer, 10-Bridge drive shaft, 11-Cutter, 12-Feeding auger, 13-Reel, 14-Cleaning motor driver, 15-Cleaning module drive motor, 16-Cleaning module reducer, 17-Cleaning transition wheel, 18-Blower, 19-Grain conveyor, 20-Screen box 21-Miscellaneous waste conveyor; 22-Walking motor driver; 23-Walking module drive motor; 24-Wheel-side reducer; 25-Unloading module driver; 26-Unloading module drive motor; 27-Unloading intermediate transmission shaft; 28-Output sprocket; 29-Grain box bottom auger; 30-Unloading cylinder; 31-Separation motor driver; 32-Separation module drive motor; 33-Separation module reducer; 34-Drum; 35-Water pump; 36-Radiator; 37-Water tank; 38-Water pipe; 39-DC-DC step-down module. Detailed Implementation

[0029] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0030] The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of this application provided in the drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application.

[0031] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0032] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0034] The following reference Figures 1 to 3 This application describes a range-extended hybrid electric harvester according to some embodiments.

[0035] See Figure 1 As shown, an embodiment of this application provides a range-extended hybrid electric harvester, including: a range-extended power supply system, a power battery power supply system, a power management system, and an electrical system; wherein, the range-extended power supply system and the power battery power supply system are connected in parallel to the power management system, the power management system is also connected to the electrical system, and the range-extended power supply system and the power battery power supply system are used as the energy source for the entire vehicle, the power management system is used to allocate electrical power, and the electrical system is used to drive the various working parts of the range-extended hybrid electric harvester to work in order to complete the harvesting operation.

[0036] As can be seen from the structure described above, this application provides a novel range-extended hybrid electric harvester that uses a dual power source of range-extended power supply and a power battery to provide power to the whole machine, ensuring sufficient operating time. Moreover, the electric motor type can save fuel, reduce carbon emissions, and improve operating accuracy, representing a completely new power architecture.

[0037] In this embodiment, preferably, as follows: Figure 1 As shown, the range-extended power supply system includes an engine 1, a generator 2, and an AC-DC converter 3; wherein, the engine 1 is connected to the generator 2 to form a range extender; the input terminal of the AC-DC converter 3 is connected to the three-phase line of the generator 2, and the output terminal of the AC-DC converter 3 is connected to the power management system.

[0038] As can be seen from the structure described above, the output end of engine 1 and the shaft of generator 2 can be connected by splines, couplings, or transition flanges to form a range extender, which is installed on the range extender base bracket. The three-phase lines of generator 2 are electrically connected to the AC input end of AC-DC converter 3. The output end of AC-DC converter 3 is positive and negative two-phase DC power. Engine 1 drives generator 2 to rotate and generate electricity in speed mode. AC-DC converter 3 is used to control the power output of generator 2 and convert the AC power generated by generator 2 into DC power, which is output to the DC bus of the power system of this harvester. The DC bus is connected to the power distribution unit PDU6 described below. When the power battery 4 has a low charge, the electrical energy output by the range extender power supply system will also be stored in the power battery 4 described below.

[0039] Furthermore, preferably, this engine 1 is a diesel engine. Of course, it is not limited to this and can also be selected according to actual needs, such as a gas engine, a fuel cell engine, etc.

[0040] In this embodiment, preferably, as follows: Figure 2 As shown, the power battery power supply system includes a power battery 4, and the positive and negative terminals of the power battery 4 are respectively connected to the power management system.

[0041] Further, preferably, such as Figure 2 As shown, the power battery power supply system also includes a DC-DC converter 5. The input terminals of the DC-DC converter 5 are connected to the positive and negative terminals of the power battery 4, respectively, and the output terminal of the DC-DC converter 5 is connected to the power management system.

[0042] As described above, the positive and negative terminals of the power battery 4 are connected to the input terminals of the DC-DC converter 5, and the output terminal of the DC-DC converter 5 is also connected to the DC bus. The power battery 4 outputs electrical energy to the DC-DC converter 5, which boosts the voltage of the electrical energy output by the power battery 4 and outputs it to the DC bus of the harvester's power system. The power battery 4 needs to be connected to a nine-hole DC fast charger and a seven-hole AC slow charger. When the harvester is not in use, the power battery 4 needs to be charged regularly to prevent damage to the power battery 4.

[0043] Preferably, such as Figure 1 As shown, the power battery power supply system is equipped with a support mechanism, which consists of an iron frame and an iron plate. The iron frame of the support mechanism is used to support two iron plates, which are divided into upper and lower layers. The upper iron plate mainly holds the power battery 4, and the lower iron plate mainly holds the DC-DC booster. The support mechanism is located on the lower left side of the range extender base bracket, that is, in the middle of the left side of the vehicle.

[0044] In this embodiment, preferably, as follows: Figure 2As shown, the power management system includes a power distribution unit (PDU6). The output terminals of the range-extended power supply system and the power battery power supply system are all connected in parallel to the input terminal of the power distribution unit (PDU6) via a DC bus. The output terminal of the power distribution unit (PDU6) is connected to the power consumption system.

[0045] As can be seen from the structure described above, the input terminal of the power distribution unit PDU6 is electrically connected to the DC bus of the DC output terminal of the AC-DC converter 3 of the range-extended power supply system and the DC bus of the output terminal of the power battery power supply system. The output terminal is electrically connected to the drivers and motors of each drive system part of the power consumption system. The power distribution unit PDU6 is used to distribute the power consumption of each drive system. Preferably, the power distribution unit is placed on the iron plate of the support mechanism on the same layer as the DC-DC converter 5.

[0046] In this embodiment, preferably, as follows: Figure 1 and Figure 2 As shown, the power system includes a header module drive system, and the header module drive system includes a header motor driver 7, a header module drive motor 8, and a header mechanism. The header motor driver 7 is connected to the input terminal of the header module drive motor 8, and the output terminal of the header module drive motor 8 is connected to the header mechanism.

[0047] The cutter module drive system includes a cutter module reducer 9, and the output end of the cutter module drive motor 8 is connected to the cutter mechanism through the cutter module reducer 9.

[0048] Based on the structure described above, existing header mechanisms generally include components such as a bridge drive shaft 10, a cutter 11, a feeding auger 12, and a reel 13. The output shaft of the header module drive motor 8 is mechanically connected to the left side of the bridge drive shaft 10 via the header module reducer 9. The rotation of the motor drives the bridge drive shaft 10 to rotate, which in turn drives the cutter 11, the feeding auger 12, and the reel 13 through components such as pulleys and chain gears. The reel 13 rotates and pushes the grain backward toward the cutter 11. After the cutter 11 cuts the crop, the reel 13 pushes it onto the header. The spiral blades on both sides of the feeding auger 12 push the cut grain to the feeding inlet in the middle of the header. The telescopic teeth of the auger push the grain toward the bridge and then feed it into the longitudinal axial flow drum 34 via a chain rake for threshing and separation. The header mechanism and its working process described above are existing technologies and will not be described in detail here.

[0049] Among them, the header motor driver 7, the header module drive motor 8, and the header module reducer 9 need to be installed on the support structure. The support structure is installed on the left side of the bridge. The header module drive motor 8 can also be directly connected to the left side of the bridge drive shaft 10 through a coupling to realize direct motor drive. Furthermore, if the stepless speed regulation of the reel 13 and the bridge reversal function are realized, two more small-power motors can be added for drive.

[0050] It is evident that direct motor drive simplifies the transmission path, thereby reducing fuel consumption and transmission system failure rate. Furthermore, direct motor drive has a fast response speed and a wide speed range, enabling stepless speed change and automatic adjustment of the reel 13's rotational speed according to vehicle speed and feed rate.

[0051] In this embodiment, preferably, as follows: Figure 1 and Figure 2 As shown, the power system also includes a separation module drive system, which includes a separation motor driver 31, a separation module drive motor 32, and a separation mechanism. The separation motor driver 31 is connected to the input terminal of the separation module drive motor 32, and the output terminal of the separation module drive motor 32 is connected to the separation mechanism.

[0052] The separation module drive system also includes a separation module reducer 33, and the output end of the separation module drive motor 32 is connected to the separation mechanism through the separation module reducer 33.

[0053] As can be seen from the structure described above, the existing threshing mechanism generally includes a drum 34, a belt, and a shredder. The threshing motor driver 31 is electrically connected to the threshing module drive motor 32. The output shaft of the threshing module drive motor 32 is mechanically connected to the threshing module reducer 33 and the right-side grass discharge wheel of the whole vehicle. The rotation of the motor drives the grass discharge wheel and the shaft of the drum 34 to rotate. Furthermore, the left side of the shaft of the drum 34 is connected to the main pulley of the shredder via a belt. The threshed grains, along with the husks, broken ears, and stalks, fall onto the shaking plate through the grid screen holes of the concave plate. The long stalks move to the tail of the longitudinal axial flow drum 34 and are discharged from the machine body, or are cut and discharged by the shredder. The above-mentioned threshing mechanism and its working process are existing technologies and will not be described in detail here.

[0054] The separating motor driver 31, the separating module drive motor 32, and the separating module reducer 33 need to be mounted on the support structure. The support structure is mounted on the right side of the grass discharge wheel (drum 34 shaft). The separating module drive motor 32 can also be directly connected to the right side of the grass discharge wheel shaft via a coupling to achieve direct motor drive. Furthermore, if the speed regulation function of drum 34 is desired, a separate motor can be selected to drive drum 34, and a separate low-power motor can be selected to drive the shredder, or the shredder can be omitted.

[0055] It is evident that direct motor drive simplifies the transmission path, thereby reducing fuel consumption and transmission system failure rate. Furthermore, direct motor drive offers fast response and a wide speed range, enabling stepless speed regulation and automatic adjustment of the drum 34's rotational speed.

[0056] In this embodiment, preferably, as follows: Figure 1 and Figure 2 As shown, the power system includes a walking drive system, which includes three walking motor drivers 22, three walking module drive motors 23, two wheel-side reducers 24, and a walking mechanism; wherein, the three walking motor drivers 22 are respectively connected to the input terminals of the three corresponding walking module drive motors 23.

[0057] The outputs of two of the walking module drive motors 23 directly drive the left and right rear wheels of the walking mechanism through two corresponding wheel-side reducers 24, respectively. The other walking module drive motor 23 directly drives the gearbox, and the gearbox drives the front wheels of the walking mechanism through the axle.

[0058] As can be seen from the structure described above, the traveling mechanism generally includes a front axle gearbox, axle, rear wheels, and front wheels. The traveling motor driver 22 and the traveling module drive motor 23 are electrically connected. The output shaft of one of the traveling module drive motors 23 is mechanically connected to the front axle gearbox and axle to drive the front wheels of the harvester. The traveling module drive motor 23 of the gearbox axle is mounted on the motor cover. The output shafts of the other two traveling module drive motors 23 are mechanically connected to the wheel-side reducer 24 and the left and right wheels of the rear axle of the harvester to drive the rear wheels of the harvester. That is, the rear wheels adopt a wheel-side drive or wheel hub drive scheme. The traveling module drive motor 23 replaces the original traveling motor. The above-mentioned traveling mechanism and its working process are existing technologies and will not be described in detail here.

[0059] It is evident that direct motor drive simplifies the transmission path, thereby reducing fuel consumption. Furthermore, direct motor drive offers fast response, a wide speed range, and twice the instantaneous torque output capability, making it easier to get out of trouble, climb slopes, and cross ridges, resulting in high efficiency in work relocation.

[0060] In this embodiment, preferably, as follows: Figure 1 and Figure 2 As shown, the power system also includes a grain unloading module drive system, which includes a grain unloading module driver 25, a grain unloading module drive motor 26, and a grain unloading mechanism. The grain unloading module driver 25 is connected to the input terminal of the grain unloading module drive motor 26, and the output terminal of the grain unloading module drive motor 26 is connected to the grain unloading mechanism.

[0061] As described above, the unloading mechanism generally includes an intermediate unloading drive shaft 27, an output sprocket 28, a grain tank bottom auger 29, and an unloading cylinder 30. The unloading motor driver is electrically connected to the unloading module drive motor 26. The output shaft of the unloading module drive motor 26 is mechanically connected to the left side of the intermediate unloading drive shaft 27 via a coupling. The rotation of the unloading module drive motor 26 drives the intermediate unloading drive shaft 27 to rotate. Furthermore, it is connected to the grain tank bottom auger 29 and the auger inside the unloading cylinder 30 via chain gears and other components. The unloading motor driver and the unloading module drive motor 26 are mounted on a support frame on the left rear of the grain tank's intermediate unloading shaft, achieving direct motor drive. It should be noted that this unloading mechanism is an existing structure and will not be described in detail here.

[0062] It is evident that direct motor drive simplifies the transmission path, thereby reducing fuel consumption and transmission system failure rate. Furthermore, direct motor drive offers fast response and a wide speed range, enabling stepless speed regulation and automatic adjustment of the rotational speed and feed rate of the augers in the grain tank bottom auger 29 and unloading drum 30.

[0063] In this embodiment, preferably, as follows: Figure 1 and Figure 2 As shown, the power system also includes a cleaning module drive system, which includes a cleaning motor driver 14, a cleaning module drive motor 15, and a cleaning mechanism. The cleaning motor driver 14 is connected to the input terminal of the cleaning module drive motor 15, and the output terminal of the cleaning module drive motor 15 is connected to the cleaning mechanism.

[0064] The cleaning module drive system also includes a cleaning module reducer 16, and the output end of the cleaning module drive motor 15 is connected to the cleaning mechanism through the cleaning module reducer 16.

[0065] As can be seen from the structure described above, the cleaning mechanism generally includes a cleaning transition wheel 17, a blower 18, a grain elevator 19, a sieve box 20, and a waste elevator 21. The cleaning motor driver 14 is electrically connected to the cleaning module drive motor 15. The output shaft of the cleaning module drive motor 15 is mechanically connected to the cleaning module reducer 16 and the blower 18 shaft of the cleaning transition pulley. The rotation of the cleaning module drive motor 15 drives the cleaning transition pulley and the blower 18 shaft to rotate. Furthermore, the grain elevator 19, sieve box 20, and waste elevator 21 are driven to work through components such as pulleys and chain gears. The mixture of threshed grains, impurities, husks, and short stalks jumps from front to back on the shaking plate. During the backward shaking and conveying process, the grains and husks gradually separate. Due to the difference in specific gravity, the grains are below the broken husks.

[0066] When the material moves to the tail of the vibrating plate, the grains and chaff particles fall through the gaps in the bars, forming a material curtain. Under the airflow of the blower 18, this curtain is separated and falls into different parts of the screen box 20. Meanwhile, broken stalks and impurities are held up by the bars and further separated, falling onto the upper and lower screens, and finally discharged from the machine through the tail screen. After the initial separation, the material enters the cleaning chamber and is dispersed by the airflow of the fan. Lighter chaff and broken stalks are blown out of the machine, while clean grains fall through the screen holes onto the grain slide plate and enter the grain auger. The grain auger pushes the material to the right and sends it to the grain bin via the grain elevator 19 and the top auger. Unthreshed impurities and broken ears fall through the tail screen holes onto the impurity slide plate and enter the impurity auger. The impurity elevator 21 pushes the material back to the threshing drum 34 for secondary threshing and separation. It should be noted that the cleaning mechanism is an existing structure; therefore, its structure and working process will not be described in detail.

[0067] The cleaning motor driver 14, the cleaning module drive motor 15, and the cleaning module reducer 16 need to be mounted on a support structure. The support structure is mounted on the right side of the cleaning transition wheel 17 (fan 18 shaft). The cleaning module drive motor 15 can also be directly connected to the right side of the fan 18 shaft via a coupling to achieve direct motor drive. Furthermore, if the speed regulation function of the fan 18 is to be achieved, a small-power motor can be selected to drive the fan 18 separately, while the other cleaning working components operate using the aforementioned cleaning module drive motor 15 drive scheme.

[0068] It is evident that direct motor drive simplifies the transmission path, thereby reducing fuel consumption and transmission system failure rate. Furthermore, direct motor drive offers fast response and a wide speed range, enabling stepless speed change and automatic adjustment during cleaning and screening.

[0069] In this embodiment, preferably, as follows: Figure 1 and Figure 3 As shown, the range-extended hybrid electric harvester also includes a cooling system, which includes a water pump 35, a radiator 36, a water tank 37, and a water pipe 38. Other systems included in the electrical system are connected in series with the water pump 35 via the water pipe 38, and then connected in parallel to the radiator 36 and the water tank 37.

[0070] As can be seen from the structure described above, the motor drivers and motors in the above-mentioned module drive systems are connected to the low-power water pump 35 through water pipe 38, and then connected in parallel to a radiator 36 and a water tank 37 for circulation to achieve the purpose of heat dissipation. Alternatively, the motor drivers and motors in the above-mentioned module drive systems can be connected to the high-power water pump 35 and a water tank 37 through water pipe 38 for circulation.

[0071] In this embodiment, preferably, as follows: Figure 1 and Figure 2As shown, the power system also includes a DC-DC step-down system, and the DC-DC step-down system includes a DC-DC step-down module 39. The input terminal of the DC-DC step-down module 39 is connected to the output terminal of the power management system, and the output terminal of the DC-DC step-down module 39 is connected to the 24V system control power of the whole machine.

[0072] As can be seen from the structure described above, the input terminal of the DC-DC step-down module 39 is electrically connected to the output terminal of the power distribution unit PDU6, and the output terminal of the DC-DC step-down module 39 is connected to the 24V system control power of the whole machine, which is used to supply power to the low-voltage electrical components such as the low-voltage controller, BCM, headlight, sensor, and display screen of this harvester.

[0073] In summary, this application provides a range-extended hybrid electric harvester. The electric harvester includes a range-extended power supply system, a power battery power supply system, a power management system, a header module drive system, a threshing module drive system, a walking drive system, a grain unloading module drive system, a cleaning module drive system, a cooling system, and a DC-DC step-down system. Among these, the range-extended power supply system and the power battery power supply system are the energy sources for the entire vehicle. The drive system is used to drive the various working parts of the harvester to complete the harvesting operation. The cooling system is used to dissipate heat from the motor and the driver. The DC-DC step-down system is used to supply power to the low-voltage 24V electrical components of the entire machine.

[0074] It is evident that by using a range-extended power supply and a dual power source of the battery to power the entire machine, there is no range anxiety, fuel savings, and reduced carbon emissions. Furthermore, the direct drive of the motor simplifies the transmission path, thereby reducing fuel consumption and transmission system failure rate. The direct drive of the motor has a fast response speed and a wide speed range, enabling stepless speed regulation and automatic adjustment of the speed of the drum 34, the fan 18, and the reel 13 according to changes in vehicle speed and feed rate. Moreover, the direct drive of the motor has an instantaneous torque output capability of twice that of the original, making it easier to get out of trouble, climb slopes, and cross ridges, and improving the efficiency of operation and relocation.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A range-extended hybrid electric harvester, characterized in that, include: The system includes a range-extended power supply system, a power battery power supply system, a power management system, and an electrical consumption system. The range-extended power supply system and the power battery power supply system are connected in parallel to the power management system, which is also connected to the electrical consumption system. The range-extended power supply system and the power battery power supply system serve as the energy source for the entire vehicle. The power management system is used to allocate electrical power. The electrical consumption system is used to drive the various working components of the range-extended hybrid electric harvester to complete the harvesting operation. The power system also includes a grain unloading module drive system, which includes a grain unloading module driver, a grain unloading module drive motor, and a grain unloading mechanism. The grain unloading module driver is connected to the input terminal of the grain unloading module drive motor, and the output terminal of the grain unloading module drive motor is connected to the grain unloading mechanism. The power system also includes a cleaning module drive system, which includes a cleaning motor driver, a cleaning module drive motor, and a cleaning mechanism. The cleaning motor driver is connected to the input terminal of the cleaning module drive motor, and the output terminal of the cleaning module drive motor is connected to the cleaning mechanism.

2. The range-extended hybrid electric harvester according to claim 1, characterized in that, The range-extended power supply system includes an engine, a generator, and an AC-DC converter; wherein the engine is connected to the generator to form a range extender; the input terminal of the AC-DC converter is connected to the three-phase lines of the generator, and the output terminal of the AC-DC converter is connected to the power management system.

3. The range-extended hybrid electric harvester according to claim 1, characterized in that, The power battery power supply system includes a power battery, and the positive and negative terminals of the power battery are respectively connected to the power management system.

4. The range-extended hybrid electric harvester according to claim 3, characterized in that, The power battery power supply system also includes a DC-DC converter, the input terminals of which are connected to the positive and negative terminals of the power battery respectively, and the output terminal of which is connected to the power management system.

5. The range-extended hybrid electric harvester according to claim 1, characterized in that, The power management system includes a power distribution unit (PDU). The output terminals of the range-extended power supply system and the power battery power supply system are both connected in parallel to the input terminal of the power distribution unit (PDU) via a DC bus. The output terminal of the power distribution unit (PDU) is connected to the power consumption system.

6. The range-extended hybrid electric harvester according to claim 1, characterized in that, The power system includes a header module drive system, and the header module drive system includes a header motor driver, a header module drive motor, and a header mechanism. The header motor driver is connected to the input terminal of the header module drive motor, and the output terminal of the header module drive motor is connected to the header mechanism. The cutter module drive system also includes a cutter module reducer, and the output end of the cutter module drive motor is connected to the cutter mechanism through the cutter module reducer.

7. The range-extended hybrid electric harvester according to claim 1, characterized in that, The power system also includes a separation module drive system, which includes a separation motor driver, a separation module drive motor, and a separation mechanism. The separation motor driver is connected to the input terminal of the separation module drive motor, and the output terminal of the separation module drive motor is connected to the separation mechanism. The separation module drive system also includes a separation module reducer, and the output end of the separation module drive motor is connected to the separation mechanism through the separation module reducer.

8. The range-extended hybrid electric harvester according to claim 1, characterized in that, The power system includes a walking drive system, which includes three walking motor drivers, three walking module drive motors, two wheel-side reducers, and a walking mechanism; wherein, the three walking motor drivers are respectively connected to the input terminals of the three corresponding walking module drive motors. The outputs of two of the walking module drive motors directly drive the left and right rear wheels of the walking mechanism through two corresponding wheel-side reducers, respectively. The other walking module drive motor directly drives the gearbox, and the gearbox drives the front wheels of the walking mechanism through the axle.

9. The range-extended hybrid electric harvester according to any one of claims 1 to 8, characterized in that, The cleaning module drive system further includes a cleaning module reducer, and the output end of the cleaning module drive motor is connected to the cleaning mechanism through the cleaning module reducer; and / or The range-extended hybrid electric harvester also includes a cooling system, which includes a water pump, a radiator, a water tank, and water pipes. Other systems included in the electrical system are connected in series with the water pump through the water pipes and then connected in parallel to the radiator and the water tank. The power system also includes a DC-DC step-down system, and the DC-DC step-down system includes a DC-DC step-down module. The input terminal of the DC-DC step-down module is connected to the output terminal of the power management system, and the output terminal of the DC-DC step-down module is connected to the 24V system control power of the whole machine.

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