Powertrain for agricultural tractor with dual drive and dual independent output electrical machine

Abstract

To provide a powertrain for an agricultural tractor, with dual drive and dual independent electrical output.SOLUTION: A powertrain comprises: two or more output drive shafts (105, 107) coupled to two or more loads; and a single power source (113) connected to multiple loads (101, 103, 104), by the first solid shaft (105) connecting a machine 1 to a load 1 (101) on one end through a coupling device (106) and optionally to a prime mover (109) on a front end through a coupling unit (110).SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to the field of agricultural machinery and implements. In particular, the present invention relates to a powertrain for an agricultural tractor. Furthermore, the present invention relates to a method of operating a powertrain for an agricultural tractor. [Background technology]

[0002] The trend toward designing and manufacturing fuel-efficient, low-emission vehicles has certainly gained significant momentum over the past decade. At the forefront of this movement are hybrid vehicles, which seamlessly integrate a relatively efficient combustion engine with an electric drive motor. These vehicles have both a power source and an IC engine. The efficiency of accommodating multiple loads in hybrid vehicles has yet to be explored. This invention allows for the independent management of multiple loads without placing a strain on either the mechanical or electrical components of the tractor.

[0003] Patent Document 1 provides a dual-drive electric machine that reduces power loss that occurs when the output end / input end and the load are separated, compared to conventional rotating electric machines. The dual-drive electric machine is connected to an epicyclic gear train (EG101). A clutch device is constructed using a controllable braking device. By controlling the controllable braking device to lock or release the brake, the output end / input end rotating shaft (S101), the output end / input end rotating shaft (S102), and the output end / input end sleeve rotating shaft (AS101) of the epicyclic gear train (EG101) are operated, connecting or disconnecting the drive, and operating the dual-drive electric machine (EM100) between the output end / input end.

[0004] Patent Document 2 discloses a dual-drive motor with two independent terminal outputs for electric vehicles. The dual-drive motor includes an upper motor housing, a lower motor housing, and left and right motors. The upper and lower motor housings are removably attached to form a fixed drive axle housing. The left motor includes a left motor stator and a left motor rotor, and the right motor includes a right motor stator and a right motor rotor. The left and right motor stators are fixedly attached to both sides of the drive axle housing. The left motor rotor's rotating shaft is directly connected to the left wheel, and the right motor rotor's rotating shaft is directly connected to the right wheel. Bearing sleeves are disposed between the left and right motor rotor's rotating shafts and the drive axle housing, and the outside of the drive axle housing is connected to the vehicle frame via left and right suspension connecting pieces. The dual-drive motor has a simple and reliable structure. The integrated drive axle and drive motor saves space, reduces weight, and facilitates modular design of the electric vehicle.

[0005] Patent Document 3 discloses a dual-motor drive multi-planetary train power coupling for an electric tractor. The power coupling between the drive motor and PTO motor uses a combination of three planetary gear mechanisms and a synchronizer gear shift mechanism. In particular, by engaging and disengaging the left and right synchronizers and locking and unlocking the first and second brakes, various operating modes can be realized, including dual-motor independent drive, dual-motor coupled drive traveling, and dual-motor coupled drive rotary tillage. Furthermore, various operating conditions for the tractor, such as low-speed light load, low-speed heavy load, and high-speed transportation, can be met. This improves the electric tractor's environmental adaptability and increases the motor utilization rate.

[0006] Therefore, there is a need for a powertrain that combines dual drives and dual independent outputs from multiple machines to overcome the shortcomings of existing vehicles. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-178971 [Patent Document 2] Chinese Patent Application Publication No. 109130820A [Patent Document 3] Chinese Patent Application Publication No. 111775722A Summary of the Invention [Problem to be solved by the invention]

[0008] SUMMARY OF THE INVENTION It is an object of the present invention to provide a powertrain that is practical for use in agricultural tractors.

[0009] It is an object of the present invention to provide a powertrain for a tractor that is more compact and easier to manufacture than those known in the art.

[0010] Another object of the present invention is to provide a powertrain for a tractor that integrates multiple machines and implements to reduce packing constraints.

[0011] It is yet another object of the present invention to provide a powertrain in which multiple loads operate independently at different speeds.

[0012] It is yet another object of the present invention to provide a powertrain that provides combined power flows from a common powertrain. [Means for solving the problem]

[0013] A primary aspect of the present invention is a powertrain for an agricultural tractor, comprising: a power source (107) for providing rotational force; an input shaft coupled to a power source for receiving rotational power; two or more output drive shafts connected to two or more loads selected from a first load (101) and a second load (102); A controller; The object of the present invention is to provide a powertrain for an agricultural tractor, comprising: a powertrain connected to multiple loads (101, 102) via a single energy source by a first shaft which is a solid shaft connecting machine 1 to load 1 and a second hollow shaft connecting machine 2 to load 2; the machines are electric machines which function as both motors and generators and are configured to operate independently of each other at different speeds; and load 1 and load 2 are configured to operate independently by drive shafts.

[0014] Another aspect of the present invention is a powertrain for an agricultural tractor, comprising: a power source (113) for providing rotational force; an input shaft coupled to a power source for receiving rotational power; two or more output drive shafts (105, 107) coupled to two or more loads (101, 103, and 102) selected from a first two or more machines including a first machine (109) and a second machine (111); A controller; the powertrain is connected to multiple loads (101, 103) via a single energy source (113) by a first solid shaft (105) connecting machine 1 to load 3 (104) at one end and to load 1 via a coupling device (106) at the other end, the solid shaft being configured to pass through the front and rear ends of machine 1, and a second hollow shaft connecting machine 2 to load 2; the machines are electric machines that function as both motors and generators and are configured to operate independently of each other at different speeds; load 3 and load 2 are connected, load 1 is removable; machine 1 is configured to run load 1 and load 3 simultaneously, and load 2 is configured to operate independently via a drive shaft.

[0015] Yet another aspect of the present invention is a powertrain for an agricultural tractor, comprising: a power source (113) for providing rotational force; an input shaft coupled to a power source (113) for receiving rotational power; two or more output drive shafts (105, 107) coupled to two or more loads including a first load (101), a second load (103), and a third load (104); A controller; The powertrain includes a single power source (113) connected to multiple loads (101, 102, 103) by a first solid shaft (105) connecting machine 1 to load 3 (104) at one end and to load 1 via a coupling device (106) at the other end, and a second hollow shaft connecting machine 2 to load 2, the machines being electric machines functioning as both motors and generators and configured to operate independently of each other at different speeds, the hollow shaft (107) and the solid shaft (105) being coupled by a second coupling unit (108) to provide combined power generated by machine 1 and machine 2 to load 2, and configured to selectively decouple load 1 by the first coupling unit (106).

[0016] Another aspect of the present invention is a powertrain for an agricultural tractor, comprising: a power source (113) for providing rotational force; an input shaft coupled to a power source (113) for receiving rotational power; two or more output drive shafts (105, 107) coupled to two or more loads including a first load (101), a second load (103), and a third load (104); a prime mover or IC engine; A controller; two or more linkage units (106, 108, 110); The powertrain comprises a single power source (113) connected to multiple loads (101, 103, 104) by a first solid shaft (105) connecting machine 1 at one end to load 1 (101) via a coupling device (106) and at the front end to a prime mover (109) via a coupling unit (110), and a second hollow shaft (107) connecting machine 2 to load 2, the machines being electric machines functioning as both motors and generators and configured to operate independently of each other at different speeds, the hollow shaft (107) and the solid shaft (105) being connected to the first coupling unit (110). and a powertrain for an agricultural tractor, the powertrain being configured to selectively disconnect load 1 by a first coupling unit (106) and provide combined power generated from both machine 1 and machine 2 to load 2, the powertrain being coupled by a second coupling unit (108), the prime mover or engine being connected to the front axle of machine 1, and to function as a generator to charge a power source after disconnecting loads (101, 103, 104), and to provide energy to load 2 by providing additional power to machine 1 and machine 2 when high power is required.

[0017] Yet another aspect of the present invention provides a powertrain for an agricultural tractor, wherein the power source is an energy storage system selected from an electrochemical system, a mechanical system, or a pneumatic system.

[0018] Yet another aspect of the present invention provides a powertrain for an agricultural tractor, wherein the linkage unit is selected from a mechanical system, an electromechanical system, or a pneumatic system.

[0019] Another aspect of the present invention provides a powertrain for an agricultural tractor, wherein the load is selected from any type of drivetrain or geartrain system.

[0020] Another aspect of the present invention provides a powertrain for an agricultural tractor, wherein Load 1 (101) is selected from a vehicle traction wheel with or without any implement such as a tractor, a tiller, a rotary tiller, a mower, a sprayer, etc.

[0021] Another aspect of the present invention provides a powertrain for an agricultural tractor, wherein Load 2 (103) is selected from any implement such as a vehicle PTO or hydraulic pump drive, HVAC unit / tiller, rotary tiller, mower, sprayer, etc.

[0022] Another aspect of the present invention provides a powertrain for an agricultural tractor, wherein load 3 (104) is selected from a vehicle PTO or any implement such as a blower, brush / tiller, rotary tiller, mower, sprayer, etc.

[0023] Another aspect of the present invention provides a powertrain for an agricultural tractor, wherein the power source (113) is a lead acid battery / Li-ion battery / sodium-based battery / all-solid-state battery or a hydrogen power cell. [Brief explanation of the drawings]

[0024] [Figure 1] 1 is a diagram illustrating a system configuration of a first exemplary embodiment of the present invention. [Figure 2] FIG. 10 is a diagram illustrating a system configuration according to a second exemplary embodiment of the present invention. [Figure 3] FIG. 10 is a diagram illustrating a system configuration according to a third exemplary embodiment of the present invention. [Figure 4] FIG. 10 is a diagram showing the system configuration of a fourth embodiment of a powertrain for a tractor. [Figure 5] FIG. 10 is a diagram illustrating a use case of Example 4 according to the fourth embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0025] The present invention, embodied as a "powertrain for an agricultural tractor with dual drive and dual independent output electric machines," succinctly fulfills the above-mentioned need in the art. The present invention has objectives resulting from the above-mentioned need, which are listed below. While the objectives of the present invention are listed, it will be apparent to those skilled in the art that the listed objectives are not exhaustive of the entire invention, but are included for illustrative purposes only. Furthermore, the present invention is intended to encompass within its scope and purview any and all structural alternatives and / or functional equivalents, even if such structural alternatives and / or functional equivalents are not expressly mentioned herein or elsewhere in this disclosure. Accordingly, the present invention is intended to encompass within its scope and purview any and all improvements / modifications applied to structural / functional alternatives. The present invention may be embodied in other specific forms without departing from its essential attributes.

[0026] Throughout this specification, the use of the term "comprise" and variations such as "comprises" and "comprising" may imply the inclusion of element(s) not specifically recited.

[0027] Definition: M / C - Any type of electric machine. In various embodiments, the machine is selected from an electric motor or generator. Energy source: Lead acid battery / Li-ion battery / Sodium based battery / Solid state battery or Hydrogen power cell. Load - Through any type of drivetrain / geartrain system. For the purposes of this specification, a load is any additional agricultural machinery implement connected directly to the solid or hollow shaft or by any mechanical / electromechanical / hydraulic linkage. Energy Source - Any energy storage system (electrochemical, mechanical or pneumatic) Unit A - Any mechanical / electromechanical / hydraulic link Unit B - Any mechanical / electromechanical / hydraulic link Unit C - Any mechanical / electromechanical / hydraulic link Shafts: hollow and solid shafts.

[0028] The present invention discloses a powertrain configured for and suitable for a tractor, including a drive unit and an engine. In particular, the powertrain of the present invention includes dual drive and dual independent output electric machines that drive the tractor and are connectable to the tractor and function to transmit energy to at least one attachment unit or implement coupled thereto. The present invention addresses the problem of compact packaging for a tractor that can operate for extended periods of time and provide a constant power supply. Furthermore, an objective is to provide additional or combined power for implements (referred to herein as loads) that require high power to operate. The present invention provides a plurality of machines selected from any or all types of electric machines (M / C).

[0029] The powertrain of the present invention functions to transmit energy to consumers of a tractor and / or at least one attachment unit. The powertrain is configured to drive an attachment unit that can be connected to the tractor and includes a suitable power take-off, in particular a power take-off shaft. The term "attachment" in this specification is synonymous with the term "load" (101, 102, 103, 104). In particular, the power take-off forms the mechanical drive source for the attachment unit. The power take-off can be selectively located at the front or rear of the tractor. The attachment unit or load can be an attachment unit towed or carried by the tractor, or a fixed attachment unit that can be driven via the power take-off or is simultaneously driven via the power take-off.

[0030] The vehicle transmission has at least one or exactly one transmission output configured and / or suitable to drive at least one or exactly one vehicle axle, in particular the vehicle axle being the rear drive axle or alternatively the front drive axle of a tractor.

[0031] The drive device includes one or more electric machines. In particular, two electric machines (M / C) (109, 111) are configured in each case as rotating electric machines. Preferably, the two electric machines have in each case a motor shaft via which they are mechanically integrated with the drive device.

[0032] The present invention, in various embodiments, discloses a powertrain for an agricultural tractor (100) with dual drive and dual independent electrical outputs. The powertrain includes a power source (113) for providing rotational power, an input shaft coupled to the power source for receiving the rotational power, and two or more output drive shafts (105, 107) coupled to two or more loads. As used herein, a load is any type of implement configured to be coupled to the tractor.

[0033] The present invention includes a master control unit, the Vehicle Control Unit (VCU-120). Each machine and battery has a control unit, and all of these control units are integrated into the VCU. User inputs at the steering unit are operated by the user, and depending on the user input, the VCU decides whether to activate Load 1 (101), Load 2 (102), Load 3 (103), or Load 4 or Prime Mover (115). The VCU (120) collects information from the various other control units and activates the energy source (113) to provide energy to the respective selected load (i.e., Load 1, Load 2, or Load 3).

[0034] In a first embodiment, a first load (101) and a second load (103), and a controller are provided. The powertrain connects multiple loads (101, 103) via a single energy source by a first shaft, which is a solid shaft (105) connecting machine 1 to load 1, and a second hollow shaft (107) connecting machine 2 to load 2, where the machines are electric machines that function as both motors and generators and are configured to operate independently of each other at different speeds, and load 1 and load 2 are configured to operate independently via drive shafts.

[0035] Example 1: The first embodiment is illustrated by an energy source (113) selected from a battery. The battery is connected to a control unit, which is further connected to a VCU or vehicle control unit, i.e., master unit. When a user wants to activate Load 1 or Load 2, the VCU collects information from various other control units and activates an energy source to provide energy to the selected load (i.e., Load 1 or Load 2). The powertrain connects to multiple loads, where Load 1 is selected from a vehicle tow wheel with or without any implement, such as a tractor, tiller, rotary tiller, mower, sprayer, etc. Load 2 is selected from a vehicle PTO or hydraulic pump drive, HVAC unit / tiller, rotary tiller, mower, sprayer, etc. The powertrain is configured such that a solid shaft (105) connects Machine 1 (M / C-1 109) to Load 1 (101). Machine 2 (M / C-2-111) is connected to Load 2 via a hollow shaft (107). Here, energy (113) from the battery is electrical energy sent to M / C-1 (109) and M / C-2 (111), which converts the electrical energy into mechanical energy and transmits it to Load 1 and Load 2. Both operate independently with Machines 1 and 2. Here, the two machines are integrated and two different loads are operating simultaneously.

[0036] Referring to FIG. 2, a second embodiment of the present invention is disclosed, including a first load (101) and a second load (103) and a controller. The powertrain connects multiple loads (101, 103) through a single energy source (113) by a first solid shaft (105) configured to pass through the front and rear ends of machine 1, with machine 1 connected at one end to load 3 (104) and the other end to load 1 via a coupling device (106). The powertrain further includes a second hollow shaft (107) connecting machine 2 (111) to load 2, where the machines are electric machines functioning as both motors and generators and configured to operate independently of each other at different speeds, with load 3 connected to machine 1 and load 2 connected to machine 2. Load 1 is removably coupled via coupling unit A (106). Machine 1 is configured to run loads 1 and 3 simultaneously, with load 2 configured to operate independently via a drive shaft. In this configuration, machine 1 runs two loads (101 and 103) and machine 2 runs load 2 independently.

[0037] An important aspect of the present invention is the configuration in which Machine 1 can be dedicated to providing power only to Load 3 in use cases where Load 3 requires more power than Machine 1. This is achieved by decoupling Load 1 so that all power generated by Machine 1 is used to power Load 3. Load 3 is driven by a stator and rotor set. Machine 1 is driven by a first set of controller, stator, and rotor, and Machine 2 is driven by a second set of controller, stator, and rotor. Unit A is a mechanical, hydraulic, or electromechanical coupling that connects or disconnects Load 1. Loads 2 and 3 are always connected, and Load 1 is connected or disconnected as needed. Machine 1, Load 3 (104) is always connected, while Load 1 (101) is coupled.

[0038] Example 2: The second embodiment is illustrated by an energy source (113) selected from a battery. The battery is connected to a control unit, which is connected to a VCU or vehicle control unit (120). The powertrain connects Machine 1 at one end to Load 3 (104) through a coupling device (106) and to multiple loads (101, 103) via a single energy source (113) by a first solid shaft (105) that connects to Load 1 at the other end by a solid shaft (105). The solid shaft (105) is configured to pass through the front and rear ends of Machine 1 (109), connecting and powering Load 1 (101) and Load 3 (104). The powertrain further includes a second hollow shaft (107) connecting Machine 2 (111) to Load 2 (103), the machines being electric machines that function as both motors and generators, configured to operate independently of each other at different speeds. Load 1 (101) is removably connected via connection unit A (106). Machine 1 (109) is configured to operate Load 1 (101) and Load 3 (104) simultaneously, while Load 2 (103) is configured to operate independently via a drive shaft.

[0039] In this specification, the energy from the battery is electrical energy sent to M / C-1 (109) and M / C-2 (111), which convert the electrical energy into mechanical energy and transmit it to Load 1 and Load 2. Both operate independently with Machine 1 and Machine 2.

[0040] Load-1: Vehicle towing wheel with or without any implements such as towing machine, tiller, rotary tiller, mower, sprayer, etc. Load-2: Vehicle PTO or hydraulic pump drives, HVAC units / any implements such as tillers, rotary tillers, mowers, sprayers, etc. Load-3: Vehicle PTO or any implement such as blower, brush / tiller, rotary tiller, mower, sprayer, etc.

[0041] Machine 1 may be connected, for example, to a vehicle tow wheel only, or may be coupled to an implement such as a tractor or rotary tiller, mower, sprayer, etc., forming load 1. Machine 2 is connected by a hollow shaft to a vehicle PTO / hydraulic pump drive, an HVAC unit, or any implement such as a tiller, rotary tiller, mower, sprayer, etc. Load 3 is attached to machine 1 and may be a vehicle PTO or blower, a brush or tiller, rotary tiller, mower, sprayer, etc. As used herein, the powertrain of this embodiment is configured to always run load 3 and load 2, and also run load 1 selected from a vehicle tow wheel with or without any implement such as a tractor, tiller, rotary tiller, mower, sprayer, etc., and can disconnect load 1 if load 2 or load 3 requires increased power supply from the battery.

[0042] Referring to FIG. 3, a third embodiment of the present invention discloses a powertrain including a power source (113) for providing rotational power. The drive device includes an input shaft coupled to the power source (113) to receive the rotational power. The drive device further includes two or more output drive shafts (105, 107) coupled to two or more loads, namely, a first load (101), a second load (103), and a third load (104). The third embodiment has two coupling units, referred to as Unit A (106) and Unit B (108). Unit B (108) is a locking mechanism provided to couple the power outputs of Machine 1 and Machine 2. The power of the combined power output of Machine 1 and Machine 2 can accommodate all of the aforementioned loads (Loads 1, 2, and 3). In the third embodiment, Unit B couples the solid shaft (105) and the hollow shaft (107). Unit B further includes a controller. The powertrain includes a single power source (113) connected to multiple loads (101, 103, 104) by a first solid shaft (105) connecting Machine 1 to Load 3 (104) at one end and to Load 1 (101) at the other end via Unit A, i.e., coupling device (106), and a second hollow shaft connecting Machine 2 (111) to Load 2 (103). The machines are electric machines that function as both motors and generators and are configured to operate independently of each other at different speeds, and the hollow shaft (107) and solid shaft (105) are coupled by a second coupling unit / locking mechanism (108) to provide the combined power generated by Machine 1 and Machine 2 to Load 2, and are configured to selectively decouple Load 1 by the first coupling unit (106). In this embodiment, when load 2 requires high power, the power generated by machine 1 and machine 2 is combined and supplied to load 2, and at the same time, load 1 is uncoupled to reduce the load on machine 1, thereby allowing load 2 (103) to operate efficiently.

[0043] Working Example: Example 3 Referring to Figure 3, a third embodiment of the present invention discloses a powertrain including a power source (113), which in an exemplary embodiment is a battery. The drive device includes an input shaft coupled to the power source (113) to receive rotational power. The drive device further includes two or more output drive shafts (105, 107) coupled to at least three loads: a first load (101), a second load (103), and a third load (104). The drive device includes two coupling units, referred to as Unit A (106) and Unit B (108). Unit B is a locking mechanism provided to couple the power outputs of Machine 1 and Machine 2.

[0044] Unit B is a locking mechanism that couples the power of Machine 1 and Machine 2, and the combined power output can accommodate all of the loads mentioned above (Loads-1, 2, and 3). Unit B connects the solid shaft (105) and the hollow shaft (107). Unit B also includes a controller. The power source (113) is a battery connected to Machines M / C-1 and M / C-2, which are connected to the loads. The first solid shaft (105) connects Machine 1 at one end to Load 3 (104), which can be selected from a vehicle PTO or any implement such as a blower, brush / tiller, rotary tiller, mower, sprayer, etc.

[0045] At the other end, the solid shaft is connected to Load 1 (101) via a coupling device (106), where Load 1 is selected from a vehicle towing wheel alone, with or without any implements, such as a tractor, tiller, rotary tiller, brush cutter, sprayer, etc. A second hollow shaft connects Machine 2 to Load 2 (103), where the machine is an electric machine that functions as both a motor and a generator, configured to operate independently of each other at different speeds. The hollow shaft (107) and the solid shaft (105) are coupled by a second coupling unit / locking mechanism (108) to provide combined power generated by Machine 1 and Machine 2 to Load 2, and are configured to selectively decouple Load 1 via the first coupling unit (106). When Load 2 requires higher power, the power generated by Machine 1 and Machine 2 is combined and supplied to Load 2, which may include, for example, an HVAC unit or a rotary tiller. Load 1 may be simultaneously disconnected to reduce the load on Machine 1 so that Load 2 (103) can operate efficiently.

[0046] In a fourth embodiment, a powertrain is provided that includes an internal combustion engine, particularly a diesel engine. The internal combustion engine, also referred to as a prime mover (109), is operatively connected to one of two electric machines, the corresponding electric machine being capable of operating in a generator mode to generate electrical energy. A power source (113) provides rotational power. The powertrain includes an input shaft coupled to the power source (113) to receive the rotational power, two or more output drive shafts (105, 107) coupled to two or more loads, including a first load (101), a second load (103), and a third load (104), a prime mover or IC engine, a controller, and two or more coupling units (106, 108, 110). Coupling unit A is configured to removably attach load 1 (101) to machine 1 (109). Coupling unit C (110) is removably attached to the prime mover (109). The powertrain comprises a single power source (113) connected to multiple loads (101, 103, 104) by a first solid shaft (105) connecting machine 1 at one end to load 1 (101) via a coupling device (106) and at the front end to a prime mover (109) via a coupling unit (110), and a second hollow shaft (107) connecting machine 2 to load 2. The machines are electric machines that function as both motors and generators and are configured to operate independently of each other at different speeds, and the hollow shaft (107) and solid shaft (105) are coupled by a second coupling unit (108) by selectively disconnecting load 1 by a first coupling unit (106) to provide combined power generated from both machine 1 and machine 2 to load 2, and a prime mover or engine is connected to the front shaft of machine 1 and is configured to function as a generator to charge the power source (113) after disconnecting the loads (101, 103, 104) and also provide additional power to machine 1 and machine 2 to provide energy to load 2 when high power is required.

[0047] In the first use case, the prime mover (115) is connected to Machine 1 (109) and acts as a generator, charging the energy source (113) via Machine 1.

[0048] In the second use case, when all loads, i.e., Load 1 (101), Load 2 (103), and Load 3 (104), are operating and the power generated by Machine 1 and Machine 2 is insufficient, the prime mover (115) can provide additional power via Unit C. The prime mover 115, Machine 1, and Machine 2 provide mechanical power. If this power is insufficient to run all the loads, the prime mover (115) provides additional energy to run the loads. The prime mover (115) can be used as a generator in certain use cases and can charge the energy source (113). Load 2 and Load 3 can be disconnected and the prime mover (115) can be used to recharge the energy source.

[0049] Example 4 In a fourth embodiment, a powertrain is provided that includes an internal combustion engine, particularly a diesel engine. The internal combustion engine, also referred to as a prime mover (109), is operably connected to one of two electric machines, which can operate in generator mode to generate electrical energy. A power source (113) provides rotational power. The powertrain includes an input shaft coupled to the power source (113) to receive the rotational power, two or more output drive shafts (105, 107) coupled to two or more loads, including a first load (101R, 101L), a second load (103), and a third load (104), a prime mover or IC engine, a controller, and two or more coupling units (106, 108, 110). There are multiple control units, including a control unit for the battery (113), a first control unit (121) for machine 1 (109), and a second control unit (122) for machine 2 (112).

[0050] Load-1: The solid shaft (105) connects on the right side to the vehicle towing wheel of Load 1 (101R) with or without any implements such as a tractor, tiller, rotary tiller, mower, sprayer, etc. The hollow shaft connects to Load 2 through Unit B (108). In this embodiment, Load 2 requires high power, which is provided by the combined power of Machine 1 (M / C-1 109) and Machine 2 (M / C-2) (111). Load-2: Vehicle PTO or hydraulic pump drives, HVAC units / any implements such as tillers, rotary tillers, mowers, sprayers, etc. Load-3: Vehicle PTO or any implement such as blower, brush / tiller, rotary tiller, mower, sprayer, etc. Energy source: Lead acid battery / Li-ion battery / Sodium based battery / Solid state battery or Hydrogen power cell.

[0051] Referring to Figure 5, the prime mover converts electrical energy from the battery into mechanical energy and supplies it to Load 1 (101L) and Load 3 (104) on the left side. The battery is also configured to send electrical energy to Machine 1 and Machine 2, and the control unit supplies electrical energy to Machines 1 and 2. This energy is converted by Machine 1 and Machine 2 and provided to Load 2 via Coupling Unit B (108).

[0052] Coupling unit A is configured to removably attach load 1 (101) to machine 1 (109). Coupling unit C (110) is removably attached to prime mover (109). The powertrain includes a single power source (113) connected to multiple loads (101, 103, 104) by a first solid shaft (105) connecting machine 1 at one end to load 1 (101) via a coupling device (106) and at its front end to the prime mover (109) via a coupling unit (110), and a second hollow shaft (107) connecting machine 2 to load 2 (103). The machines are electric machines that function as both motors and generators and are configured to operate independently of each other at different speeds, and the hollow shaft (107) and solid shaft (105) are coupled by a second coupling unit (108) by selectively disconnecting load 1 by a first coupling unit (106) to provide combined power generated from both machine 1 and machine 2 to load 2, and a prime mover or engine is connected to the front shaft of machine 1 and is configured to function as a generator to charge the power source after disconnecting the loads (101, 103, 104) and also provide additional power to machine 1 and machine 2 to provide energy to load 2 when high power is required. [Explanation of symbols]

[0053] 10A-10C are reference numbers in system configurations of various embodiments of a powertrain for an agricultural tractor according to various embodiments of the present invention. 101-Load 1 101R - Right Load 1 101L - Left Load 1 103-Load 2 104-Load 3 105-Solid shaft 106-Unit A 107-Hollow shaft 108-Unit B 109-Machine 1 110-Unit C 111-Machine 2 113-Energy Source 115-Motor / IC Engine 120-Vehicle Control Unit (VCU) 121-Machine 1 Control Unit 122-Machine 2 Control Unit

Claims

1. 1. A powertrain for an agricultural tractor, comprising: a power source (107) for providing rotational force; an input shaft coupled to the power source for receiving the rotational force; two or more output drive shafts connected to two or more loads selected from a first load (101) and a second load (102); A controller; the powertrain is connected to multiple loads (101, 102) via a single energy source by a first shaft, which is a solid shaft, connecting machine 1 to load 1, and a second hollow shaft, which connects machine 2 to load 2, the machines being electric machines that function as both motors and generators and configured to operate independently of each other at different speeds, and load 1 and load 2 being configured to operate independently by the drive shafts.

2. 1. A powertrain for an agricultural tractor, comprising: a power source (113) for providing rotational force; an input shaft coupled to the power source for receiving the rotational force; two or more output drive shafts (105, 107) coupled to two or more loads (101, 103, and 102) selected from the first two or more machines including a first machine (109) and a second machine (111); A controller; the powertrain is connected to multiple loads (101, 103) via a single energy source (113) by means of the first solid shaft (105) connecting machine 1 at one end to load 3 (104) and at the other end to load 1 via a coupling device (106), the solid shaft being configured to pass through the front and rear ends of machine 1, and a second hollow shaft connecting machine 2 to said load 2, the machines being electric machines functioning as both motors and generators and configured to operate independently of each other at different speeds, load 3 and load 2 being connected and load 1 being removable, machine 1 being configured to run load 1 and load 3 simultaneously, and load 2 being configured to operate independently via said drive shaft.

3. 1. A powertrain for an agricultural tractor, comprising: a power source (113) for providing rotational force; an input shaft coupled to the power source (113) to receive the rotational force; two or more output drive shafts (105, 107) coupled to two or more loads including a first load (101), a second load (103), and a third load (104); A controller; the powertrain includes a single power source (113) connected to multiple loads (101, 102, 103) by the first solid shaft (105) connecting machine 1 to load 3 (104) at one end and to load 1 via a coupling device (106) at the other end, and a second hollow shaft connecting machine 2 to the load 2, the machines being electric machines functioning as both motors and generators and configured to operate independently of each other at different speeds, the hollow shaft (107) and solid shaft (105) being coupled by a second coupling unit (108) to provide combined power generated by machine 1 and machine 2 to load 2, and configured to selectively decouple load 1 by the first coupling unit (106).

4. 1. A powertrain for an agricultural tractor, comprising: a power source (113) for providing rotational force; an input shaft coupled to the power source (113) to receive the rotational force; two or more output drive shafts (105, 107) coupled to two or more loads including a first load (101), a second load (103), and a third load (104); a prime mover or IC engine; A controller; two or more linkage units (106, 108, 110); The power train comprises a single power source (113) connected to multiple loads (101, 103, 104) by the first solid shaft (105) connecting Machine 1 at one end to Load 1 (101) through a coupling device (106) and at the front end to a prime mover (109) through a coupling unit (110), and a second hollow shaft (107) connecting Machine 2 to Load 2, the machines being electric machines functioning as both motors and generators and configured to operate independently of each other at different speeds, the hollow shaft (107) and the solid shaft (105) being connected to the first A powertrain for an agricultural tractor, wherein a load 1 is selectively disconnected by a coupling unit (106) and coupled by a second coupling unit (108) to provide a combined power generated from both a machine 1 and a machine 2 to a load 2, the prime mover or engine being connected to the front axle of the machine 1 and configured to also provide energy to the load 2 by functioning as a generator to charge the power source after disconnecting the load (101, 103, 104) and providing additional power to the machines 1 and 2 when high power is required.

5. 5. A powertrain for an agricultural tractor according to claims 1, 2, 3 and 4, wherein the power source is an energy storage system selected from an electrochemical system, a mechanical system, or a pneumatic system.

6. 5. A powertrain for an agricultural tractor according to claims 1, 2, 3 and 4, wherein the linkage unit is selected from a mechanical system, an electromechanical system, or a pneumatic system.

7. 5. A powertrain for an agricultural tractor according to claims 1, 2, 3 and 4, wherein the load is selected from any type of drivetrain or geartrain system.

8. 5. A powertrain for an agricultural tractor according to claims 1, 2, 3 and 4, wherein the load 1 (101) is selected from a vehicle traction wheel with or without any implement such as a traction machine, a tiller, a rotary tiller, a mower, a sprayer, etc.

9. 5. The powertrain for an agricultural tractor according to claims 2, 3 and 4, wherein Load 2 (103) is selected from a vehicle PTO or hydraulic pump drive, HVAC unit / tiller, rotary tiller, mower, sprayer, or any implement.

10. 5. The powertrain for an agricultural tractor according to claims 2, 3 and 4, wherein the load 3 (104) is selected from a vehicle PTO or any implement such as a blower, a brush / tiller, a rotary tiller, a mower, a sprayer, etc.

11. 6. The powertrain for an agricultural tractor according to claim 5, wherein the power source (113) is a lead acid battery / Li-ion battery / sodium-based battery / all-solid-state battery or a hydrogen power cell.

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