CN113635785B - Electric tractor - Google Patents
Electric tractor Download PDFInfo
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- CN113635785B CN113635785B CN202111194781.9A CN202111194781A CN113635785B CN 113635785 B CN113635785 B CN 113635785B CN 202111194781 A CN202111194781 A CN 202111194781A CN 113635785 B CN113635785 B CN 113635785B
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- electric tractor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/61—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
The present invention provides an electric tractor comprising: the electric tractor comprises a storage battery pack, a first motor and a generator set, wherein the storage battery pack is used for providing electric power, the first motor is used for converting electric energy into mechanical energy to be output so as to drive the electric tractor to travel, the generator set is used for converting the mechanical energy into the electric energy, the generator set comprises an engine and a second motor, and the second motor is used for converting the mechanical energy generated by the engine into the electric energy to be output so as to provide the electric power; when the electric power of the storage battery pack is enough to maintain the whole machine to work, the engine is turned off, and the storage battery pack supplies power to the whole machine; when the power of the storage battery pack is not enough to maintain the work of the whole machine, the storage battery pack does not supply power, the generator set provides power for the whole machine, and meanwhile, the storage battery pack is charged. The invention effectively solves the mileage endurance problem of the pure electric tractor by arranging the generator set, and can effectively charge the storage battery while the electric tractor works so as to ensure sustainable operation.
Description
Technical Field
The invention relates to the technical field of tractors, and particularly provides an electric tractor.
Background
At present, the utilization efficiency of the whole diesel oil of the Chinese agricultural machinery is low, and along with the implementation of the agricultural scale and the improvement of the whole-course mechanization level of crops, the development of the agricultural machinery has the characteristics of large scale, multiple functions and integration, so that the increasing energy consumption can cause more pollution. From the development direction of new energy and the application field of new technology, electrodynamic agricultural machinery equipment becomes an important way for further development of agricultural mechanization, and efficient intelligent environment-friendly agricultural power machinery becomes a main attack direction of scientific and technological innovation of agricultural machinery worldwide. Tractors are important marks in the agricultural machinery industry, and therefore, it is necessary to design and develop electric tractors suitable for various working conditions.
The traditional pure electric tractor adopts a single motor to drive various working conditions such as plowing, harrowing, sowing, transporting, rotary tillage and the like, a driving motor is often in a low-efficiency area, the power of the motor cannot be fully utilized, the operation time of the tractor cannot reach an ideal state, and the single motor driving electric tractor cannot meet the requirements of multiple working conditions and economy of agricultural operation. In view of this, an electric tractor capable of meeting different working conditions is provided.
Disclosure of Invention
The invention aims to provide an electric tractor to meet the requirements of agricultural machinery on multiple working conditions and economy.
An electric tractor comprising: the electric tractor comprises a storage battery pack, a first motor and a generator set, wherein the storage battery pack is used for providing electric power, the first motor is used for converting electric energy into mechanical energy to be output so as to drive the electric tractor to travel, the generator set is used for converting the mechanical energy into the electric energy, the generator set comprises an engine and a second motor, and the second motor is used for converting the mechanical energy generated by the engine into the electric energy to be output so as to provide the electric power; when the electric power of the storage battery pack is enough to maintain the whole machine to work, the engine is turned off, and the storage battery pack supplies power to the whole machine; when the power of the storage battery pack is not enough to maintain the work of the whole machine, the storage battery pack does not supply power, the generator set provides power for the whole machine, and meanwhile, the storage battery pack is charged.
Further, the electric tractor further includes: the working machine is connected to the rear of the frame and used for working; the third motor is independently arranged in the operation machine and used for converting electric energy into mechanical energy to be output, and then power is provided for the operation machine.
Furthermore, the operation machinery is a rotary cultivator, the third motor is arranged on the rotary cultivator, the rotary cultivator comprises a reduction gearbox, and the rotating speed of the third motor is adjusted by the reduction gearbox and then is transmitted to the rotary cultivator, so that rotary cultivation operation is realized.
Further, the electric tractor further includes: one end of the lifter is connected with the frame, and the other end of the lifter is connected with the rotary cultivator and is used for controlling the rotary cultivator to ascend or descend; the lifting controller is used for controlling the lifter to lift or press down.
Further, the electric tractor further includes: the battery management system is electrically connected with the storage battery pack and used for regulating and controlling the charging and discharging of the storage battery pack, and the battery management system is electrically connected with the second motor and used for regulating and controlling the flow direction of the output current of the second motor; the first motor controller is used for controlling the rotating speed, the rotating direction and the starting and stopping of the first motor; and the third motor controller is used for controlling the rotating speed and starting and stopping of the third motor.
Further, the electric tractor comprises a vehicle control unit; the vehicle control unit is electrically connected with the first motor controller and sends a control signal to the first motor controller through the vehicle control unit so as to control the rotating speed, the rotating direction and the starting and stopping of the first motor; the vehicle control unit is electrically connected with the third motor controller, and the third motor controller of the vehicle control unit sends a control signal to further control the start and stop of a third motor; the vehicle control unit is electrically connected with the battery management system and used for sending a control signal, and the vehicle control unit sends the control signal to the battery management system so as to adjust the output power of the battery management system to the first motor or the third motor.
Further, the control signal includes: a manual control signal, a work mode signal, a linkage mode signal, an accelerator pedal signal, a gear signal, a vehicle speed signal, a brake signal, and a manual acceleration signal.
Further, the electric tractor also comprises a rectifier, wherein the rectifier is used for converting alternating current generated by the second motor into direct current and transmitting the direct current to the battery management system; the rectifier further comprises a power frequency alternating current connecting port which is used for connecting power frequency alternating current to charge the storage battery pack.
Further, the electric tractor further comprises a rotating speed controller, and the rotating speed controller is used for controlling the rotating speed of the third motor so as to control the working speed of the working machine.
Further, the electric tractor further includes: the rotating speed of the first motor is adjusted through the gearbox and then output; the differential speed running system is used for driving the electric tractor to run.
The electric tractor that provides in this scheme through setting up generating set, has effectively solved pure electric tractor's mileage continuation of the journey problem, and can charge for storage battery when can effectively satisfying electric tractor work to ensure sustainable operation.
Drawings
The invention is described in further detail below with reference to the following figures and detailed description:
fig. 1 is a schematic view of the structure of an electric tractor according to the present invention.
Fig. 2 is a schematic structural view of the electric tractor according to the present invention.
Fig. 3 is a partially enlarged view of a portion a of fig. 2.
Fig. 4 is a schematic view of the internal structure of the electric tractor according to the present invention.
Fig. 5 is a partially enlarged view of fig. 4 at B.
Reference numerals: 1-a storage battery pack, 2-a first motor, 3-a generator set, 31-an engine, 32-a second motor, 4-a frame, 5-a working machine, 51-a rotary cultivator, 511-a reduction box, 6-a third motor, 7-a lifter, 8-a lifting controller, 9-a battery management system, 10-a first motor controller, 11-a third motor controller-, 12-a whole vehicle controller, 13-a rectifier, 131-an alternating current connector, 14-a rotating speed controller, 15-a gearbox, 16-a differential speed running system, 161-a differential, 162-a driving wheel, 163-a steering wheel and 17-a national standard direct current charging port.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
For the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
In this context, it is to be understood that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings of the specification.
An electric tractor comprises a storage battery pack 1, a first motor 2, a generator set 3, a frame 4, a working machine 5, a third motor 6, a lifter 7, a lifting controller 8, a battery management system 9, a first motor controller 10, a third motor controller 11, a whole vehicle controller 12, a rectifier 13, a rotating speed controller 14, a gearbox 15 and a differential speed running system 16.
The frame 4 is used for bearing the components, the storage battery pack 1 is used for providing electric power, the first motor 2 is used for converting electric energy into mechanical energy to be output, the rotating speed of the first motor 2 is adjusted through the gearbox 15 and then is output to the differential driving system 16, and the electric tractor is driven to run through the differential driving system 16; in the present embodiment, the differential traveling system 16 includes a differential 161, a driving shaft, driving wheels 162, and steering wheels 163, the differential 161 is connected to the transmission case 15, the differential 161 is connected to the driving shaft and transmits power to the driving shaft, the driving wheels 162 are respectively installed on the left and right sides behind the frame 4 via the driving shaft, and the steering wheels 163 are respectively installed on the left and right sides in front of the frame 4; the electric tractor is driven to walk through the first motor 2, stepless speed change adjustment can be effectively achieved, and walking stability is effectively improved.
The generator set 3 is used for converting mechanical energy into electric energy, the generator set 3 comprises an engine 31 and a second electric machine 32, and the second electric machine 32 is used for converting the mechanical energy generated by the engine 31 into electric energy to output and provide electric power; the rectifier 13 is used for converting the alternating current generated by the second motor 32 into direct current and transmitting the direct current to the battery management system 9; the rectifier 13 further comprises an alternating current connection port 131 for connecting power frequency alternating current to charge the storage battery pack 1. The electric tractor further comprises: a national standard direct current charging port 17, wherein the national standard direct current charging port 17 is electrically connected with the battery management system 9 and is used for receiving direct current; the generator set 3 further comprises an external port for outputting current outwards, and the external port comprises a 220V alternating current port and a 380V alternating current port, so that alternating current can be conveniently and directly output outwards to meet other power consumption requirements; the storage battery pack 1 is used for conveying electric power for the electric tractor, zero emission is achieved, and unit noise is reduced.
The working machine 5 is connected to the rear part of the frame 4 for working; the third motor 6 is independently arranged in the working machine 5 and is used for converting the electric energy provided by the storage battery pack 1 or the electric energy provided by the second motor 32 into mechanical energy to be output, so as to provide power for the working machine 5; one end of the lifter 7 is connected with the frame 4, the other end of the lifter is connected with the working machine 5, and the lifting controller 8 is used for controlling the lifter 7 to lift or press down so as to control the lifting or descending of the working machine 5; the speed controller 14 is used to control the speed of the third electric machine 6 and thus the working speed of the working machine 5. In this embodiment, the working machine 5 is a rotary cultivator 51, the rotary cultivator 51 includes a reduction gearbox 511, and the rotation speed of the third motor 6 is adjusted by the reduction gearbox 511 and then transmitted to the rotary cultivator 51, so as to implement rotary cultivation; in other embodiments, other agricultural machines may be used; the third motor 6 is used for controlling the agricultural machine to operate, so that the first motor 2 of the electric tractor is effectively decoupled with the control motor, the independent control of running and operation is realized, and the requirements of various operation environments are met.
The battery management system 9 is electrically connected with the storage battery pack 1 and used for regulating and controlling the charging and discharging of the storage battery pack 1, and the battery management system 9 is electrically connected with the second motor 32 and used for regulating and controlling the flow direction of the output current of the second motor 32; the first motor controller 10 is used for controlling the rotating speed, the rotating direction and the start and stop of the first motor 2; the third motor controller 11 is used for controlling the rotating speed and starting and stopping of the third motor 6; the vehicle control unit 12 is electrically connected with the first motor controller 10, and sends a control signal to the first motor controller 10 through the vehicle control unit 12, so as to control the rotating speed, the rotating direction and the start-stop of the first motor 2; the vehicle control unit 12 is electrically connected with the third motor controller 11, and sends a control signal to the third motor controller 11 through the vehicle control unit 12, so as to control the start and stop of the third motor 6; the vehicle control unit 12 is electrically connected with the battery management system 9 and used for sending a control signal, and the vehicle control unit 12 sends the control signal to the battery management system 9, so as to adjust the output power of the battery management system 9 to the first motor 2 or the third motor 6; the whole vehicle is centrally controlled by arranging the vehicle control unit 12, the walking of the electric tractor and the work of the rotary cultivator 51 are uniformly regulated and controlled, the comprehensive utilization efficiency is effectively improved, and the energy is saved; in addition, the first motor 2 and the third motor 6 are arranged, so that the electric tractor can walk in a stepless speed change manner and the rotary cultivator 51 can work in a stepless speed change manner.
When the electric tractor runs and the electric power of the storage battery pack 1 is enough to maintain the whole tractor to work, the engine 31 is turned off, and the storage battery pack 1 supplies power to the whole tractor; when the power of the storage battery pack 1 is not enough to maintain the work of the whole machine, the storage battery pack 1 does not supply power, the generator set 3 provides power for the whole machine, and meanwhile, in order to ensure that the storage battery pack 1 is charged, the battery management system 9 can reduce the power output to the first motor 2 and the third motor 6, namely reduce the working strength, and further ensure that the storage battery pack 1 is charged while working; when long-time high-load work is required and the work required power is larger than the power of the generator set 3, in order to ensure the work efficiency and the endurance time, the generator set 3 directly supplies power to the whole machine and the storage battery pack 1 supplies power to ensure that the work required power is met.
In this embodiment, the control signal includes: a manual control signal, a work mode signal, a linkage mode signal, an accelerator pedal signal, a gear signal, a vehicle speed signal, a brake signal, and a manual acceleration signal.
If the vehicle needs to move forwards, a high gear position and a low gear position are directly engaged, the vehicle controller 12 outputs a gear signal to control the vehicle to move forwards, or an accelerator pedal is stepped on, the vehicle controller 12 outputs an accelerator pedal signal to control the vehicle to move forwards, or an acceleration signal is manually input, and the vehicle controller 12 outputs a manual acceleration signal to control the vehicle to move forwards; when the vehicle controller 12 detects two sets of acceleration signals simultaneously, the vehicle controller 12 preferentially responds to the acceleration pedal signal.
In this embodiment, the triggering of the manual acceleration signal needs to satisfy the following triggering mechanism:
a. the vehicle enters a state to be started up,
b. the vehicle control unit 12 detects the gear signal,
c. the accelerator pedal is always in the initial position, that is, the vehicle control unit 12 cannot detect the accelerator pedal signal,
d. the vehicle control unit 12 detects the manual acceleration signal in a short period, which is less than 30S in this embodiment, and the manual acceleration signal is input through a manual control mode switch, which is generally a self-resetting contact switch.
In the running process of the vehicle, if the vehicle controller 12 does not detect that the brake signal or the accelerator pedal signal or the manual acceleration signal is not shifted to the zero position, the vehicle always responds to the manual acceleration signal, if the vehicle controller 12 detects that one of the three signals is input, the mode is immediately adjusted to be a mode for responding to the accelerator pedal signal, and if the manual control is used, the manual control mode needs to be started according to a trigger mechanism of the manual acceleration signal.
It should be noted that no matter what operating state the vehicle is in, when the vehicle control unit 12 outputs the braking signal, the first motor controller 10 controls the first motor 2 to stop rotating for the purpose of braking the vehicle, and when the braking signal continues to exist, the first motor controller 10 does not respond to any acceleration signal until the first motor controller 10 switches to the state of responding to the acceleration pedal signal after the braking signal is cancelled, so as to ensure the safety and stability of the vehicle.
The vehicle work comprises the following two working modes:
firstly, in an independent control mode, an operation mode switch is manually started to output an operation mode signal, a vehicle control unit 12 outputs a control signal to a third motor controller 11 to further control a third motor 6 to rotate at a constant rotating speed, the rotating speed of the third motor 6 is adjusted by controlling a rotating speed controller 14, and the operation mode switch is in a contact mode; the electric tractor of this embodiment still includes and is used for controlling lifting controller 8 that raiser 7 promoted or descends, in this embodiment lifting controller 8 is electric putter formula controller, through adjusting electric putter from top to bottom, and then the free control rotary tillage operation degree of depth.
Secondly, a linkage control mode, namely linkage control is carried out on the lifter 7 and the third motor controller 11, firstly, the rotating speed of the third motor 6 is set through the rotating speed controller 14, then a linkage mode switch is started, the whole vehicle controller 12 outputs a linkage mode signal, at the moment, the third motor 6 is in a state to be started, the lifter 7 is controlled to descend or ascend through the lifting controller 8, and when the lifter 7 descends to a preset position, the third motor 6 starts to rotate and enters a working state; when the lifter 7 is raised to a preset position, the third motor 6 stops rotating and enters a standby state. The manual control mode switch, the operation mode switch and the linkage mode switch are set to be contact type self-reset switches, so that the convenience and the operation safety of operation can be effectively improved, and potential safety hazards caused by misoperation of personnel are reduced.
The "empty sleeve" mentioned in this embodiment refers to that the gear is sleeved on the shaft to realize the relative rotation on the shaft, and the empty sleeve may be that a bearing, a shaft sleeve or other parts are additionally arranged between the gear and the shaft, or the gear is directly arranged on the shaft. Both the bearing and the bushing are devices known to the person skilled in the art and are therefore not further described, neither described nor shown in the description.
It will be apparent to those skilled in the art that various modifications and variations can be made to the above-described exemplary embodiments of the present invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.
Claims (9)
1. An electric tractor, comprising:
a battery pack for providing electrical power;
the first motor is used for converting electric energy into mechanical energy to be output so as to drive the electric tractor to travel;
the generator set is used for converting mechanical energy into electric energy and comprises an engine and a second motor, and the second motor is used for converting the mechanical energy generated by the engine into electric energy and outputting the electric energy for providing electric power;
a frame;
the working machine is connected to the rear of the frame and used for working;
the third motor is independently arranged in the operation machine and is used for converting the electric energy provided by the storage battery pack and/or the generator set into mechanical energy to be output so as to provide power for the operation machine;
one end of the lifter is connected with the frame, the other end of the lifter is connected with the operation machine and used for controlling the lifting or descending of the operation machine, and the lifter is also electrically connected with the third motor and used for controlling the starting and stopping of the third motor;
when the electric power of the storage battery pack is enough to maintain the whole machine to work, the engine is turned off, and the storage battery pack supplies power to the whole machine;
when the power of the storage battery pack is not enough to maintain the work of the whole machine, the storage battery pack does not supply power, the generator set provides power for the whole machine, the first motor is driven to drive the electric tractor to run, the third motor is driven to drive the operation machinery to work, and meanwhile, the storage battery pack is charged;
the electric tractor further comprises an independent control mode and a linkage control mode,
when the electric tractor is in an independent control mode, starting and stopping of the third motor are manually controlled, and depth change of operation is realized by controlling the vertical movement of the lifter;
when the electric tractor is in a linkage control mode, the third motor is started and stopped along with the change of the position of the lifter, and the starting and stopping of the operation machinery are realized by controlling the up-and-down movement of the lifter;
the electric tractor further includes control signals for controlling operation of the vehicle, the control signals including: the system comprises a manual acceleration signal, a gear signal and an accelerator pedal signal, wherein the triggering of the manual acceleration signal needs to meet the following triggering mechanism:
a. the vehicle enters a state to be started up,
b. the vehicle detects the gear signal and the gear signal,
c. the vehicle does not detect the accelerator pedal signal,
d. the vehicle detects a manual acceleration signal within 30S.
2. The electric tractor as claimed in claim 1, wherein: the operation machinery is a rotary cultivator, the third motor is installed on the rotary cultivator, the rotary cultivator comprises a reduction gearbox, and the rotating speed of the third motor is adjusted by the reduction gearbox and then is transmitted to the rotary cultivator, so that rotary cultivation operation is achieved.
3. The electric tractor according to claim 2, further comprising:
one end of the lifter is connected with the frame, and the other end of the lifter is connected with the rotary cultivator and used for controlling the rotary cultivator to ascend or descend;
a lift controller for controlling the lift to lift or depress.
4. The electric tractor of claim 1, further comprising:
the battery management system is electrically connected with the storage battery pack and used for regulating and controlling the charging and discharging of the storage battery pack, and the battery management system is electrically connected with the second motor and used for regulating and controlling the flow direction of the output current of the second motor;
the first motor controller is used for controlling the rotating speed, the rotating direction and the starting and stopping of the first motor;
and the third motor controller is used for controlling the rotating speed and starting and stopping of the third motor.
5. The electric tractor as claimed in claim 4, wherein: the electric tractor also comprises a whole vehicle controller;
the vehicle control unit is electrically connected with the first motor controller and sends a control signal to the first motor controller through the vehicle control unit so as to control the rotating speed, the rotating direction and the starting and stopping of the first motor;
the vehicle control unit is electrically connected with the third motor controller, and sends a control signal to the third motor controller through the vehicle control unit so as to control the start and stop of a third motor;
the vehicle control unit is electrically connected with the battery management system and used for sending a control signal, and the vehicle control unit sends the control signal to the battery management system so as to adjust the output power of the battery management system to the first motor or the third motor.
6. The electric tractor of claim 5, wherein the control signals further comprise: a manual control signal, an operation mode signal, a linkage mode signal, a vehicle speed signal and a brake signal.
7. The electric tractor according to claim 4, further comprising: the rectifier is connected with the second motor and the battery management system and used for converting alternating current generated by the second motor into direct current and transmitting the direct current to the battery management system;
the rectifier further comprises a power frequency alternating current connecting port which is used for connecting power frequency alternating current to charge the storage battery pack.
8. The electric tractor as claimed in claim 1, wherein: the electric tractor further comprises a rotating speed controller, and the rotating speed controller is used for controlling the rotating speed of the third motor so as to control the operation speed of the operation machine.
9. The electric tractor of claim 1, further comprising:
the rotating speed of the first motor is adjusted through the gearbox and then is output;
and the differential driving system is used for driving the electric tractor to run.
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| CN202111194781.9A CN113635785B (en) | 2021-10-14 | 2021-10-14 | Electric tractor |
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| CN202111194781.9A CN113635785B (en) | 2021-10-14 | 2021-10-14 | Electric tractor |
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| CN113635785A CN113635785A (en) | 2021-11-12 |
| CN113635785B true CN113635785B (en) | 2022-04-22 |
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| CN201604532U (en) * | 2010-03-19 | 2010-10-13 | 沈鸿贤 | All-electric automobile with power-generation and charging device |
| CN203637541U (en) * | 2014-01-02 | 2014-06-11 | 江苏悦达集团有限公司 | Power transmission device for electric tractor |
| CN104029590A (en) * | 2014-04-28 | 2014-09-10 | 河南科技大学 | Tractor driven by tandem type hybrid power and control method thereof |
| CN111231650A (en) * | 2020-01-08 | 2020-06-05 | 同济大学 | Tractor power split hybrid power system and control method thereof |
| US11130422B1 (en) * | 2020-05-13 | 2021-09-28 | Rearden Power LLC | Hybrid battery management system |
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