CN209833416U - Hybrid electric tractor - Google Patents
Hybrid electric tractor Download PDFInfo
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- CN209833416U CN209833416U CN201821695992.4U CN201821695992U CN209833416U CN 209833416 U CN209833416 U CN 209833416U CN 201821695992 U CN201821695992 U CN 201821695992U CN 209833416 U CN209833416 U CN 209833416U
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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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- 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
- Y02T10/72—Electric energy management in electromobility
Abstract
The utility model provides a hybrid electric tractor, wherein hybrid electric tractor includes a tractor body, a whole car control module, a power supply unit, a power device and a drive assembly. Power supply unit includes a fuel cell device and a rechargeable battery device, wherein power supply unit quilt whole car control module control to power device provides the electric energy, power device includes an at least motor device and an at least machine controller, wherein machine controller is in whole car control module's control down will power supply unit's electric energy transmission extremely motor device, transmission assembly includes a speed change gear, wherein speed change gear can connect with the motor device the drive under motor device's the drive effect the tractor body is marchd and is driven the operating system work of hybrid electric tractor.
Description
Technical Field
The present invention relates to the field of tractors, and more particularly, to a hybrid electric tractor.
Background
The tractor is widely applied to agricultural operation and transportation industry, and the power device of a traditional tractor is a fuel oil engine under general conditions, but the fuel oil engine can generate a large amount of smoke in the working process, so that the environment is greatly influenced, and large noise can be generated when the engine runs, so that a driver can be greatly influenced. On the other hand, the conventional fuel oil tractor consumes a lot of energy and has a low energy conversion rate, and a large part of the energy generated by the fuel oil is dissipated in the form of heat energy.
Based on this kind of traditional fuel tractor, utility model goes out neotype tractor, for example electric tractor, hybrid tractor, this kind of electric tractor adopts electric drive motor's form to replace the working method of original fuel engine to provide the electric energy for the tractor. However, since the tractor needs a large amount of load during operation, and the conventional electric tractor is powered by a storage battery, the efficiency of the battery power supply cannot fully meet the power requirement required when the tractor is fully loaded. On the other hand, the tractor operating with the storage battery needs a long time of charging energy after the electric energy is consumed, and the electric tractor cannot normally operate in the process.
The hybrid power tractor adopts a mode of hybrid operation of an electric energy and an oil-fired machine, the tractor can use the electric energy to drive the motor to provide power for the tractor, and the tractor can also be provided with power by adopting a mode of generating heat energy by the traditional oil-fired machine. The hybrid tractor can meet the requirement of a tractor for large power in the working process. However, the hybrid tractor needs to be equipped with a battery device and a motor device, and the original engine device is also kept, so that the design and manufacturing cost of the hybrid tractor is relatively high, the structure is complicated, and the requirements of users, particularly users with low income cannot be met. On the other hand, the hybrid tractor inevitably needs to use fuel to work, so that pollution gas and noise are generated when an internal combustion engine is used for working, and great influence is caused on the environment and users.
Disclosure of Invention
An object of the utility model is to provide a hybrid electric tractor, wherein hybrid electric tractor adopts the two energy supply forms of fuel cell energy supply and lithium cell energy supply to provide the electric energy for the tractor to the adaptation tractor meets the required energy demand of different use scenes at the operation in-process.
Another object of the present invention is to provide a hybrid electric tractor, wherein the hybrid electric tractor drives the running and driving operation system by the electric energy provided by the power supply device, and does not produce pollutants during the operation process, thereby avoiding polluting the environment.
Another object of the present invention is to provide a hybrid electric tractor, wherein the hybrid electric tractor has three different operation modes, i.e. a smooth operation mode, a high power operation mode and a low power operation mode, and when the high power operation mode, the fuel cell and the lithium battery simultaneously supply power to the tractor, and when the smooth operation mode is performed, only the fuel cell supplies power to the tractor, and when the low power operation mode is performed, only the lithium battery supplies power to the tractor, and when the battery use efficiency is improved, the electric energy of different power supply devices can be fully utilized.
Another object of the present invention is to provide a hybrid electric tractor, wherein the hybrid electric tractor the fuel cell device can be the lithium battery device supplies power, thereby it does not need the external power supply again the hybrid electric tractor supplies power and just can operate for a long time.
Another object of the present invention is to provide a hybrid electric tractor, wherein the power device of the hybrid electric tractor adopts an ac motor, and the performance is more stable, the energy utilization rate is high, and the service life is long, thereby increasing the service life of the hybrid electric tractor.
According to an aspect of the utility model, the utility model discloses a further provide a hybrid electric tractor, include:
a tractor body;
a vehicle control module, wherein the vehicle control module is used for controlling the operation of the hybrid electric tractor;
the power supply device comprises a fuel cell device and a rechargeable battery device electrically connected with the fuel cell device, wherein the power supply device is communicably connected with the whole vehicle control module and controls the power supply device to supply power by the whole vehicle control module;
the power device comprises at least one motor device and at least one motor controller, the motor controller of the power device is electrically connected with the power supply device and the motor device and can be connected with the vehicle control module in a communication mode, and the motor controller transmits the electric energy of the power supply device to the motor device under the control of the vehicle control module so as to enable the motor device to work;
a transmission assembly, wherein the transmission assembly includes a speed change device, the speed change device of the transmission assembly is connected with the motor device of the power device in a transmission manner, so as to drive the tractor body to travel and drive the operation system of the hybrid electric tractor to work under the driving action of the motor device of the power device.
According to the utility model discloses an embodiment, whole car control module has the even running mode, the operational mode of three kinds of differences in high power operational mode and low power operational mode, whole car control module is according to the operational mode control of three kinds of differences hybrid electric tractor's operation.
According to an embodiment of the present invention, when the hybrid electric tractor is in the steady operation mode, the vehicle control module allows the power supply device to supply power to the power device independently from the fuel cell device, when the hybrid electric tractor is in the high power operation mode, the vehicle control module allows the power supply device to supply power to the power device simultaneously from the fuel cell device and the rechargeable battery device, and when the hybrid electric tractor is in the low power operation mode, the vehicle control module allows the rechargeable battery device to supply power to the power device independently from the rechargeable battery device.
According to the utility model discloses an embodiment, whole car control module includes a detection receiving module, a judgment module and a control switching module, wherein it is used for detecting to detect the receiving module the current running state of hybrid electric tractor to transmit the testing result extremely the judgment module, by the judgment module generates corresponding judgement result according to the testing result that detects the receiving module, then by control switching module control the running state of hybrid electric tractor.
According to an embodiment of the present invention, wherein the power supply device the fuel cell device is electrically connected to the rechargeable battery device, when the electric quantity of the rechargeable battery device is lower than a certain level, by the whole vehicle control module controls the fuel cell device to charge the rechargeable battery device.
According to an embodiment of the present invention, said fuel cell device of said power supply unit is a hydrogen-oxygen fuel cell assembly.
According to an embodiment of the present invention, the fuel cell device comprises a fuel cell power generation device, at least one fuel cell fuel storage device and at least one fuel cell cooling device, wherein the fuel cell fuel storage device is configured to be communicatively connected to the fuel cell power generation device to provide power generation fuel to the fuel cell power generation device, and the fuel cell cooling device is configured to reduce heat generated by the fuel cell power generation device during power generation.
According to an embodiment of the present invention, the rechargeable battery device of the power supply device is a lithium battery device.
According to an embodiment of the present invention, the rechargeable battery comprises at least one lithium battery pack and at least one rechargeable battery cooling device, wherein the rechargeable battery cooling device is configured to reduce the heat generated by the rechargeable battery during operation, thereby preventing overheating of the power supply device due to long-term operation, and the lithium battery pack is configured to store the electric energy from the fuel cell device and transmit the stored electric energy to the power device, thereby providing the power device with electric energy.
According to an embodiment of the present invention, wherein the hybrid electric tractor further comprises an electric energy processing device, wherein the electric energy processing device is electrically connected to the power supply device and the power device, the electric energy processing device is configured to increase the voltage from the power supply device and transmit the processed electric energy to the power device for the power device to work normally.
According to an embodiment of the present invention, wherein the electric energy processing device is electrically connected to the power supply device the fuel cell power generation device of the fuel cell device and the power device, the electric energy generated by the fuel cell device of the power supply device is directly transmitted to the electric energy processing device, and the electric energy processing device will the voltage of the fuel cell device is increased and the electric energy after the voltage is increased is transmitted to the power device, so that the power device can normally work.
According to an embodiment of the present invention, the motor device of the power device is an ac motor.
According to the utility model discloses an embodiment, wherein power device the machine controller be in under control module's control action will the direct current electric energy conversion that power supply unit produced is alternating current electric energy, and with the alternating current transmission of conversion extremely motor device, for power device the motor device work.
According to the utility model discloses an embodiment, wherein whole car control module further includes a power control module, wherein power control module is used for control power device's operation, power device motor controller is in whole car control module's under the control action of power control module will the direct current that power supply unit produced turns into the alternating current of different frequencies, and then changes power device's motor device's rotational speed and running direction.
According to an embodiment of the present invention, wherein the transmission assembly further comprises a transmission shaft, wherein the transmission shaft is pivotably connected to the transmission of the transmission assembly and the tire of the tractor body of the hybrid electric tractor, so that the transmission assembly drives the tractor body to travel by the transmission shaft.
According to an embodiment of the present invention, wherein the transmission assembly further includes a power take-off shaft, the power take-off shaft is drivingly connected to the transmission assembly's transmission and the hybrid tractor's operating system, so as to drive by the transmission assembly the hybrid tractor's operating system works.
According to an embodiment of the present invention, the transmission device of the transmission assembly is a transmission device.
According to the utility model discloses an embodiment, wherein power device the motor device includes an at least in-wheel motor and an at least driving motor, wherein in-wheel motor set up in hybrid electric tractor the tire of tractor body, with the drive hybrid electric tractor marchs, driving motor is set up and is used for the drive hybrid electric tractor the operating system work.
According to the utility model discloses an embodiment, wherein power device motor device in wheel hub motor with driving motor is in whole car control module but stand-alone work or simultaneous working under the control action of power control module works as when hybrid electric tractor does not need drive operating system in the operation process, wheel hub motor quilt whole car control module power control module control allows work, and driving motor is prevented the operation, prevents the transmission shaft is in hybrid electric tractor process of marcing cavity and the energy that leads to the fact is extravagant.
Drawings
Fig. 1 is an overall view of a hybrid electric tractor according to a first preferred embodiment of the present invention.
Fig. 2 is an overall view of the hybrid electric tractor according to the first preferred embodiment of the present invention.
Fig. 3 is a block diagram illustrating the operation of the hybrid electric tractor according to the first preferred embodiment of the present invention.
Fig. 4 is an operation block diagram of a first modified embodiment of the hybrid electric tractor according to the first preferred embodiment of the present invention.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents and other technical solutions without departing from the spirit and scope of the invention.
It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purpose of limitation.
It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.
Referring to fig. 1 to 3 of the drawings of the present invention, a hybrid electric tractor according to a first preferred embodiment of the present invention is illustrated in the following description, wherein the hybrid electric tractor includes a tractor body 10, a power supply device 20, a vehicle control module 30, an electric energy processing device 40, a power device 50 and a transmission assembly 60, wherein the power supply device 20, the vehicle control module 30, the power processing device 40, the power device 50 and the transmission assembly 60 are disposed on the tractor body 10, and convert electric energy into mechanical kinetic energy to be provided to the tractor body 10 for the operation of the tractor body 10.
Accordingly, the tractor body 10 includes a body frame 11, a housing 12 and an auxiliary power unit 13, wherein the body frame 11 is used for supporting and connecting the power unit 20, the electric energy processing unit 40, the power unit 50 and the transmission assembly 60. The housing 12 is used to cover the upper end of the vehicle body frame 11 and is used to protect the power supply device 20, the vehicle control module, and the like carried and supported by the vehicle body frame 11. The auxiliary power supply device 13 is provided at a side of the body frame 11 and is used to supply electric power to an electric system of the hybrid electric tractor, such as a lighting system of the hybrid electric tractor, a dashboard of the hybrid electric tractor, and the like. Preferably, the auxiliary power supply device 13 is a battery device.
The tractor body 10 of the hybrid electric tractor further includes a direction system 14, a brake system 15 and a power control device 16, wherein the direction system 14 is configured to control the direction of travel of the tractor body 10. Preferably, the steering system 14 is a steering wheel control device, and controls the tire running direction of the tractor body 10 by controlling the steering wheel control device. The brake system 15 is used to control the traveling state of the tractor body 10. According to the first preferred embodiment of the present invention, the braking system 15 is a braking device, and the travel or stop of the tractor body 10 is controlled by the braking system 15. It is worth mentioning that according to the first preferred embodiment of the present invention, the braking system 15 is configured to control the traveling state of the tractor body 10 in a manner of controlling the rotation of the tires of the tractor body 10, and to control the traveling state of the tractor body 10 in a manner of controlling the operation state of the power unit 50 of the hybrid electric tractor. When the hybrid electric tractor is in a braking state, the tires of the tractor body 10 are prevented from running by the braking system, and on the other hand, the power unit 50 is also stopped at this time to prevent power from being output to the tractor body 10. It should be noted that the braking system 15 controls the operation of the power device 50 through the vehicle control module 30, so as to control the braking state of the hybrid electric tractor.
The power control device 16 is configured to adjust or control the operation power of the tractor body 10, for example, when the hybrid electric tractor is controlled to be in an acceleration state or in a high load state, the operation power of the hybrid electric tractor is adjusted to meet the operation power required by the hybrid electric tractor at the time by adjusting the power control device 16 to adjust the operation power of the hybrid electric tractor. Preferably, the power control device 16 is a throttle device, and the power control device controls the throttle device to adjust the output power of the power device 50, so as to control the operation power of the hybrid electric tractor. It should be noted that the power control device 16 is communicably connected to the vehicle control module 30, and the power control device 16 sends a power adjustment command to the vehicle control module 30, and then controls the output current of the power supply device 20 by the vehicle control module 30 to control the output power of the power device 50.
According to the first preferred embodiment of the present invention, the braking system 15, the direction system 14 and the power control system 16 of the tractor body 10 are installed at the front end of the driving position of the tractor body 10, so as to be operated by the driver. It is contemplated that the braking system 15, the steering system 14 and the power control system 16 of the tractor body 10 may be integrated into a controller device that an operator controls to control the operation of the hybrid electric tractor.
The power supply device 20 provides power for the hybrid electric tractor, and the power supply device 20 includes a fuel cell device 21 and a rechargeable battery device 22, wherein the fuel cell device 21 can provide power for the power device 50, and can store the generated power in the rechargeable battery device 22. The rechargeable battery unit 22 can supply power to the power unit 50 of the hybrid electric tractor alone or in combination with the fuel cell unit 21 to supply power to the power unit 50, and the power unit 50 can be supplied with electric energy to convert the electric energy into mechanical kinetic energy. In other words, the power supply device 20 has three different power supply modes, i.e., the fuel cell device 21 supplies power alone; the rechargeable battery device 22 supplies power alone and the fuel cell device 21 and the rechargeable battery 22 collectively supply power to the power plant 50 of the hybrid electric tractor.
Accordingly, the hybrid electric tractor has three different operating modes, which are a smooth operating mode, a high power operating mode and a low power operating mode, respectively, and three different power supply modes correspond to the three different operating modes of the hybrid electric tractor. When the hybrid electric tractor is in the smooth operation mode, the fuel cell device 21 of the power supply device 20 alone supplies power to the power device 50 of the hybrid electric tractor, and the rechargeable battery device 22 is in the off state at the moment, so that the charging and discharging times of the rechargeable battery device 22 are reduced, and the service life of the rechargeable battery device 22 is also prolonged to a certain extent. On the other hand, the power unit 50 of the electric tractor is supplied with power by the fuel cell unit 21 of the power unit 20, so that the path for transmitting electric energy is saved, and the loss of electric energy in the process of converting fuel biological energy into electric energy and then converting the electric energy into mechanical kinetic energy are reduced.
When the hybrid electric tractor is in a low power operation mode, such as no load or low speed operation, the power required by the hybrid electric tractor at this time is relatively small, and the rechargeable battery device 22 alone supplies power to the power device 50, so that the power supply can be satisfied. Since the rechargeable battery device 22 can be started to supply power to the power device 50 at any time, for example, when the hybrid tractor is started up, the rechargeable battery device 22 is selected to supply power when the hybrid tractor is in low-power operation, so that the hybrid tractor can be started up more quickly and can supply stable power to the power device 50.
When the hybrid electric tractor is in high-power operation, that is, the hybrid electric tractor needs to run with large power at this time, for example, when the hybrid electric tractor is in high-load operation, or is in a climbing stage, or is in wading operation, a situation that the power supply is insufficient may occur if the fuel cell device 21 alone or the rechargeable battery device 22 alone is used for supplying power, so the fuel cell device 21 and the rechargeable battery device 22 provided with the power supply device 20 at this time work together to supply power to the power device 50 of the hybrid electric tractor, and sufficient power can be supplied so that the power device 50 can meet the power requirement.
Three power supply modes of the power supply device 20 corresponding to the three operation modes of the hybrid electric tractor, wherein the three power supply modes of the power supply device 20 are judged by the whole vehicle control module 30 according to the actual operation condition of the hybrid electric tractor. In other words, the vehicle control module 30 determines the operation mode of the hybrid electric tractor according to the actual operation condition of the hybrid electric tractor, and selects the power supply mode of the power supply device 20 according to the operation mode.
Correspondingly, the vehicle control module 30 includes a detection receiving module 31, a judgment module 32 and a control switching module 33, wherein the detection receiving module 31 is used for detecting the current operation state of the hybrid electric tractor, and transmitting the detection result to the judgment module 32, and the judgment module 32 generates a corresponding judgment result according to the detection result of the detection receiving module 31, and then controls the operation state of the hybrid electric tractor by the control switching module 33. In other words, the vehicle control module 30 receives usage signals from the power plant 50 of the hybrid electric tractor and operation signals from an operator, such as control signals to raise the operating power of the hybrid electric tractor when the hybrid electric tractor is currently in a grade climbing phase. The detection receiving module 31 of the whole vehicle control module 30 transmits the received detection signal to the judging module 32, then the judging module 32 judges the working mode of the hybrid electric tractor at the moment according to the detected detection signal, and transmits the judgment result to the whole vehicle control module 30, the control switching module 33, by the control switching module 33 controls the running mode of the hybrid electric tractor, namely, controls the power supply mode of the power supply device 20. Work as whole car control module 30 judges the hybrid electric tractor at this moment and is in the smooth operation, control power supply unit 20 fuel cell device 21 alone to power device 50 power supply works as whole car control module 30 judges the hybrid electric tractor at this moment and is in the low power operation, control module 30 controls power supply unit 20 rechargeable battery device 22 alone to power device 50 power supply works as whole car control module 30 judges the hybrid electric tractor at this moment and is in the high power operation, controls power supply unit 20 fuel cell device 21 with rechargeable battery device 22 jointly to power device 50 supplies power in order to satisfy the required electric energy of hybrid electric tractor.
Preferably, the fuel cell device 21 of the power device 20 is an oxyhydrogen fuel cell assembly, wherein the fuel cell device 21 comprises a fuel cell power generation device 211, at least one fuel cell fuel storage device 212 and at least one fuel cell cooling device 213, wherein the fuel cell power generation device 211 of the fuel cell device 21 of the power device 20 is configured to be mounted on the tractor body 10. The fuel cell power plant 211 converts the power generation fuel supplied from the fuel cell fuel storage 212 into electric energy. The fuel cell storage device 212 is conductively connected to the fuel cell power generation device 211, and the fuel cell cooling device 213 is configured to reduce heat generated by the fuel cell power generation device 211 of the fuel cell device 21 during operation, thereby preventing overheating of the fuel cell power generation device due to long-term operation.
Preferably, the fuel cell cooling device 213 is a water cooling device, which transfers the heat generated by the fuel cell power generation device 211 to the external environment by heat exchange, so as to lower the temperature of the fuel cell power generation device 211 of the fuel cell device 21. Accordingly, the fuel cell cooling device 213 is provided on the side of the fuel cell power generation device 211 of the fuel cell device 21.
Preferably, the fuel cell fuel storage means 212 of the fuel cell apparatus 21 includes fuel storage tanks that supply fuel to the fuel cell power generation apparatus 211 in a mutually switchable manner.
Accordingly, the body frame 11 of the tractor body 10 includes a power supply mounting portion 111 and a fuel storage device mounting portion 112, wherein the power supply mounting portion 111 is provided for mounting and fixing the fuel cell power generation device 211 of the fuel cell device 21 and the rechargeable battery device 22 of the power supply device 20. The fuel storage device 112 is provided for supporting and fixing the fuel storage device 212 of the fuel cell device 21 of the power supply device 20. Wherein the power supply mounting part 111 and the fuel storage device mounting part 112 are respectively provided at front and rear ends of the tractor body 10 to balance front and rear weights of the tractor body 10, preventing center instability due to an excessive difference in the front and rear weights. Preferably, the power supply mounting portion 111 is provided at a front end position of the body frame 11 of the tractor body 10, and the fuel storage device 112 is provided at a rear end position of the body frame 11.
It is worth mentioning that the power supply mounting portion 111 of the vehicle body bracket 11 has a fuel cell mounting position 1111 and a rechargeable cell mounting position 1112, wherein the fuel cell mounting position 1111 and the rechargeable cell mounting position 1112 are communicated with each other. Preferably, the fuel cell mounting position 1111 and the fuel cell power generation device 211 located at the upper end of the rechargeable cell mounting position 1112, that is, the fuel cell power generation device 211 of the fuel cell device 21 are provided at the upper end of the rechargeable cell device 22. Since the weight of the rechargeable battery pack 22 is larger than that of the rechargeable battery power generation device 211, the rechargeable battery pack 22 is arranged at the lower end of the fuel battery power generation device 211 so as to lower the center of the hybrid electric tractor, and therefore, the rollover of the vehicle body caused by the too high center of gravity can be avoided during operation. It will be understood by those skilled in the art that the fuel cell mounting location 1111 and the rechargeable cell mounting location 1112 are oppositely disposed together. Alternatively, the fuel cell mounting location 1111 is provided at the lower end of the rechargeable battery mounting location 1112, or the fuel cell mounting location 1111 and the rechargeable battery mounting location 1112 are provided back and forth.
The rechargeable battery device 22 is electrically connected to the fuel cell device 21 and the power device 50, and the rechargeable battery device 22 receives and stores the electric energy from the fuel cell device 21 and outputs the electric energy stored in the rechargeable battery to the power device 50 for the power device 50 to work. The fuel cell device 21 charges the rechargeable battery device 22 when the amount of electricity in the rechargeable battery device 22 is below a certain level, and the fuel cell device 21 stops charging the rechargeable battery device 22 when the amount of electricity in the rechargeable battery device 22 is above a certain level.
Preferably, the rechargeable battery device 22 is a lithium battery device, and the rechargeable battery device 22 includes at least one lithium battery pack 221 and at least one rechargeable battery cooling device 222, wherein the rechargeable battery cooling device 222 is configured to reduce the heat generated by the rechargeable battery during operation, so as to avoid overheating of the power supply device due to long-term operation. It should be noted that the charging of the rechargeable battery device 22 by the fuel cell device 21 is controlled by the vehicle control module 30. The fuel cell means 21 of the power supply means 20 supplies power to the rechargeable battery means 22 when the charge 22 of the rechargeable battery is below a certain level, and the fuel cell means 21 of the power supply means 20 stops supplying power to the rechargeable battery means 22 when the charge of the rechargeable battery means 22 is above a certain level to avoid overcharging the rechargeable battery.
The power processing device 40 is electrically connected to the power device 20 and the power device 50, and the power processing device 40 is configured to process the power from the power device 20 and transmit the processed power to the power device 50 for normal use of the power device 50. It will be understood by those skilled in the art that the voltage and current of the electric energy required by the power plant 50 during normal operation are higher than the voltage of the electric energy generated by the fuel cell device 21 of the power plant 20, so that the electric energy generated by the fuel cell device 21 of the power plant 20 needs to pass through the electric energy processing device 40 before being used to drive the power plant 50 to operate.
As will be understood by those skilled in the art, under normal operation of the rechargeable battery device 22 of the power supply device 20, the voltage of the electric energy is relatively stable, and the driving voltage of the rechargeable battery device 22 is adapted to the operation voltage of the power device 50. In other words, when the rechargeable battery 22 supplies power to the power device 50, the electric energy generated by the rechargeable battery 22 can be directly transmitted to the power device 50 without passing through the power processing device 40, so as to drive the power device 50 to operate.
In accordance with the first preferred embodiment of the present invention, wherein the power processing device 40 is a DC-DC booster device, the voltage of the electric power generated by the fuel cell device 21 of the power supply device 20 is boosted by the power processing device 40 so as to supply the power device 50 with power. Preferably, the electric energy processing device 40 is disposed at the front end of the tractor body 10 and located at the front side of the power supply device 20, the electric energy generated by the power supply device 20 is input to the electric energy processing device 40, and then the electric energy with corresponding voltage obtained by boosting the electric energy processing device 40 is output to the power device 50, so that the power device 50 can work.
Power device 50 is in generate kinetic energy under power supply unit 20's the energy supply effect, and with the kinetic energy transmission that generates extremely transmission assembly 50, and then the drive hybrid electric tractor removes and drives hybrid electric tractor's operating system work. Accordingly, the power unit 50 is electrically connected to the rechargeable battery device 22 of the power supply device 20 and the power processing device 40, in other words, the power unit 50 can receive the power from the rechargeable battery device 22 of the power supply device 20 and the power from the fuel cell device 21 after passing through the power processing device 40. The power device 50 includes at least one motor device 51 and at least one motor controller 52, wherein the motor controller 52 is electrically connected to the motor device 51 and the power device 20. In the first preferred embodiment of the present invention, the motor device 51 is an ac motor device, wherein the motor device 51 transmits the generated kinetic energy to the transmission assembly 60 under the energy supply effect of the power supply device 20.
It is worth mentioning that the motor device 51 of the power device 50 may be selected from an ac synchronous motor, an ac asynchronous motor, a reluctance motor, a hub motor, and the like. Since the electric power generated by the fuel cell device 21 and the rechargeable battery device 22 of the power supply device 20 is direct current, the electric power of the power supply device 20 needs to be converted from direct current to alternating current before the electric power generated by the power supply device 20 is transmitted to the motor device 51 of the power device 50. Accordingly, the motor control device 52 is used to convert the electric energy generated by the rechargeable battery device 22 of the power supply device 20 and the direct current electric energy transmitted by the electric energy processing device 40 into alternating current for the operation of the motor device 51 of the power device 50.
According to the first preferred embodiment of the present invention, wherein the motor unit 51 of the power unit 50 is preferably an ac asynchronous motor, the power unit 50 is provided to the tractor body 10. Accordingly, the tractor body 10 further includes a power unit mounting portion 17, wherein the power unit mounting portion 17 is configured to mount and secure the power unit 50. The power unit mounting portion 17 of the tractor body 10 is integrally formed at the bottom end of the body frame 11 of the tractor body 10 so as to fix the power unit 50 to the body frame 11 of the tractor body 10. The motor controller 52 of the power unit 50 is configured to control the operation of the motor unit 51 of the power unit 50 and convert the dc power of the power unit 20 into ac power. The motor controller of the power unit 50 controls the rotation direction of the motor unit 51 of the power unit 50. The vehicle control module 30 further includes a power control module 35, wherein the power control module 35 is configured to control the operation of the power plant 50. In other words, the power control module 35 of the entire vehicle control module 30 is communicably connected to the motor controller 52 of the power device 50, and when the rotation direction of the motor device 51 needs to be switched, the power control module 35 of the entire vehicle control module 30 controls the motor controller 52 of the power device 50, so as to adjust the operation direction of the motor device 51. On the other hand, the power control module 35 of the vehicle control module 30 further controls the motor controller 52 of the power device 50 to make the motor controller 52 generate ac power with different frequency ranges after receiving the dc power from the power device 20.
It can be understood that, when the hybrid tractor is in the power-up stage, the power control device 16 is operated to send a power control command to the vehicle control module 30, so that the vehicle control module 30 controls the power supply device 20 to provide sufficient electric energy to the power device 50 and controls the motor controller 52 of the power device 50 to increase the frequency of the alternating current, thereby increasing the rotation speed of the motor device 52. The motor controller 52 of the power unit 50 converts the direct current from the rechargeable battery device 22 of the power supply device 20 and the electric energy processing device 40 into alternating current of different frequencies, thereby changing the rotational speed of the motor device 51.
According to the first preferred embodiment of the present invention, the transmission assembly 60 is provided to drive the operation of the hybrid electric tractor and to output power to the outside to drive the operation of the work system attached to the hybrid electric tractor. The transmission assembly 60 is drivingly connected to the power unit 50, and the motor unit 51 of the power unit 50 transmits the generated power to the transmission assembly 60 to drive the operation of the hybrid electric tractor. The transmission assembly 60 includes a speed changing device 61, a transmission shaft 62 and a power output shaft 63, wherein the speed changing device 61 is drivingly connected to the motor device 51 of the power unit 50, receives the kinetic energy from the motor device 51, and converts the kinetic energy from the motor device 51 into kinetic energy suitable for driving the hybrid electric tractor. The transmission assembly 60 is fixedly provided to the body frame 11 of the tractor body 10. The transmission 61 drives the transmission shaft 62, and thus drives the hybrid electric tractor to operate and drives the power output shaft 63 to output power to a working system, such as a plowing device, a sowing device, or a transportation device, etc., attached to the hybrid electric tractor.
Preferably, the Transmission 61 is a Transmission, and as will be understood by those skilled in the art, the Transmission 61 may be an MT Transmission (Manual Transmission), an AT Transmission (automatic Transmission), a CVT Transmission (Continuously Variable Transmission), or the like. Since the motor unit 51 of the power unit 50 is maintained at a relatively stable rotation speed under normal operation, the rotation speed of the power unit 50 is adjusted by the speed changing unit 61 of the transmission assembly 60, thereby controlling the operation speed and output power of the hybrid electric tractor. Specifically, the rotation speed of the motor unit 51 of the power unit 50 is reduced by the speed change unit 61 of the transmission assembly 60, so that the output torque of the speed change unit 61 is increased, and is output to the transmission shaft 62 and the power output shaft 63.
It is worth mentioning that the transmission shaft 62 of the transmission assembly 60 is pivotally connected to the tire of the tractor body 10, so that the tractor body 10 is driven to run by the transmission shaft 62. Accordingly, the power take-off shaft 63 of the transmission assembly 60 is pivotally connected to a working system of the hybrid electric tractor, such as a tilling device, a sowing device or a transporting device, etc. In the first preferred embodiment of the present invention, the rotating shaft 62 and the power take-off shaft 63 of the transmission assembly 60 are pivotally connected to the speed changing device 61 of the transmission assembly 60. In other words, the kinetic energy generated by the power device 50 drives the transmission shaft 62 and the power output shaft 63 to run simultaneously through the speed changing device 61 of the transmission assembly 60, thereby driving the hybrid electric tractor to travel and the operation system attached to the hybrid electric tractor to run.
Referring to fig. 4 of the drawings, a first modified embodiment of a hybrid electric tractor according to a first preferred embodiment of the present invention is illustrated in the following description, wherein the hybrid electric tractor in the modified embodiment has a structure substantially similar to that of the hybrid electric tractor in the first preferred embodiment, except for a power unit 50A, wherein the power unit 50A includes at least one motor unit 51A and at least one motor controller 52A, wherein the motor controller 52A is electrically connected to the motor unit 51A and the power unit 20. The motor device 51A is an ac motor device, wherein the motor device 51A transmits the generated kinetic energy to the transmission assembly 60 under the power supply of the power supply device 20, so as to drive the operation system attached to the hybrid electric tractor to work by the transmission assembly 60. The motor controller 52A of the power unit 50A converts the direct current from the rechargeable battery device 22 of the power supply device 20 and from the electric power processing device 40 into alternating current of different frequencies, thereby changing the rotational speed of the motor device 51A.
In detail, the motor device 51A of the power device 50A includes at least one in-wheel motor 511A and a transmission motor 512A, wherein the in-wheel motor 511A of the motor device 51A is disposed on the tire of the tractor body 10 of the hybrid electric tractor for driving the movement of the tire of the tractor body 10, thereby driving the travel of the hybrid electric tractor. Accordingly, the transmission motor 512A is configured to drive the rotation of the power output shaft 63 of the transmission assembly 60, so as to drive the operation system of the tractor, such as a plowing device, a sowing device or a transportation device, to which the power output shaft 63 is pivoted. Preferably, the driving motor 512A is an ac asynchronous motor, and is provided to the power unit mounting portion 17 of the tractor body 10, wherein kinetic energy generated by the driving motor 512A during operation is directly used to drive the operation system of the hybrid electric tractor to work, and is not used to drive the tractor body 10 of the hybrid electric tractor to travel.
Since the electric power generated by the fuel cell device 21 and the rechargeable battery device 22 of the power supply device 20 is direct current, the electric power of the power supply device 20 needs to be converted from direct current to alternating current before the electric power generated by the power supply device 20 is transmitted to the motor device 51A of the power device 50A. Accordingly, the motor control device 52A is used to convert the electric energy generated by the rechargeable battery device 22 of the power supply device 20 and the dc electric energy transmitted by the electric energy processing device 40 into ac electric energy for the operation of the motor device 51A of the power device 50A. The motor controller 52A of the power unit 50A is configured to control the operation of the motor unit 51A of the power unit 50A and convert the dc power of the power unit 20 into ac power.
It should be noted that, in the present modified embodiment, the in-wheel motor 511A and the transmission motor 512A of the motor device 51A of the power device 50A may operate simultaneously or individually under the control of the power control module 35 of the vehicle control module 30. For example, when the operation system of the tractor does not need to be used for working during traveling, the transmission motor 512A does not need to work, and at this time, the power control module 35 of the vehicle control module 30 can control the hub motor to work to drive the hybrid electric tractor to travel and prevent the transmission motor 512A from running, so as to reduce the waste of energy caused by the operation of the transmission motor 512A. On the other hand, when the hybrid electric tractor is not required to travel to drive the work system to work, the power control module 35 of the vehicle control module 30 of the hybrid electric tractor controls to allow the driving motor 512A to operate to drive the work system of the hybrid electric tractor to work and to block the operation of the in-wheel motor 511A, so as to reduce the loss of energy due to the energization of the in-wheel motor 511A. Accordingly, it is required that the power control module 35 of the vehicle control module 30 controls to allow the in-wheel motor 511A and the driving motor 512A to be operated at the same time when the hybrid electric tractor operates during traveling. As will be understood by those skilled in the art, the output powers of the in-wheel motor 511A and the transmission motor 512A of the motor device 51A of the power device 50A can be respectively adjusted, and different operation modes can be selected according to different operation conditions, so as to control the operation of the motor device 51A of the power device 50A.
According to another aspect of the present invention, the present invention further provides a transmission method for a hybrid electric tractor, comprising the steps of:
(1) the whole vehicle control module 30 detects the current running state of the hybrid electric tractor and sends a control instruction to the power supply device 20 according to the current running state so as to control the power supply device 20 to supply power to the power device 50; (2) the motor device 51 of the power device 50 operates under the energizing effect of the power device 20 to generate kinetic energy and transmit the generated kinetic energy to the transmission assembly 60; and (3) the transmission 61 of the transmission assembly 60 receives the kinetic energy generated from the power unit 50 and transmits the kinetic energy to the tractor body 10 of the hybrid electric tractor to drive the hybrid electric tractor to travel and drive the work system of the hybrid electric tractor to work.
In the transmission method of the hybrid electric tractor, in step (1), the vehicle control module 30 detects the current operation state of the hybrid electric tractor and sets three different operation modes, i.e., a smooth operation mode, a high power operation mode and a low power operation mode, according to the operation state. When the high power operation mode, whole car control module 30 control power supply unit 20 fuel cell device 21 with rechargeable battery device 22 simultaneously to power device 50 supplies power, works as when hybrid electric tractor is in the low power operation mode, whole car control module 30 control power supply unit 20 rechargeable battery device 22 alone to the power device power supply, works as when hybrid electric tractor is in the even running mode, whole car control module 30 control power supply unit 20 fuel cell device 21 alone to power device 50 supplies power.
Step (2) further includes that the fuel cell device 21 of the power supply device 20 transmits electric energy to the electric energy processing device 40, and then the processed electric energy is transmitted to the power device 50 by the electric energy processing device 40, so as to provide the power device 50 with operation.
It will be understood by those skilled in the art that the embodiments of the present invention as described above and shown in the drawings are given by way of example only and are not limiting of the present invention. The objects of the present invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the embodiments without departing from the principles, embodiments of the present invention may have any deformation or modification.
Claims (19)
1. A hybrid electric tractor, comprising:
a tractor body;
a vehicle control module, wherein the vehicle control module is used for controlling the operation of the hybrid electric tractor;
the power supply device comprises a fuel cell device and a rechargeable battery device electrically connected with the fuel cell device, wherein the power supply device is communicably connected with the whole vehicle control module and controls the power supply device to supply power by the whole vehicle control module;
the power device comprises at least one motor device and at least one motor controller, the motor controller of the power device is electrically connected with the power supply device and the motor device and can be connected with the vehicle control module in a communication mode, and the motor controller transmits the electric energy of the power supply device to the motor device under the control of the vehicle control module so as to enable the motor device to work;
a transmission assembly, wherein the transmission assembly includes a speed change device, the speed change device of the transmission assembly is connected with the motor device of the power device in a transmission manner, so as to drive the tractor body to travel and drive the operation system of the hybrid electric tractor to work under the driving action of the motor device of the power device.
2. The hybrid electric tractor as defined by claim 1 wherein said vehicle control module has three different operating modes, a smooth operating mode, a high power operating mode and a low power operating mode, said vehicle control module controlling operation of said hybrid electric tractor according to said three different operating modes.
3. The hybrid electric tractor according to claim 2, the vehicle control module allowing the fuel cell device of the power supply device to supply power alone to the power device when the hybrid electric tractor is in a smooth operation mode, allowing the fuel cell device and the rechargeable battery device of the power supply device to simultaneously supply power to the power device when the hybrid electric tractor is in a high power operation mode, and allowing the rechargeable battery device to supply power alone to the power device when the hybrid electric tractor is in a low power operation mode.
4. The hybrid electric tractor according to claim 3, wherein the vehicle control module comprises a detection receiving module, a judging module and a control switching module, wherein the detection receiving module is used for detecting the current operation state of the hybrid electric tractor and transmitting the detection result to the judging module, the judging module generates a corresponding judgment result according to the detection result of the detection receiving module, and then the control switching module controls the operation state of the hybrid electric tractor.
5. The hybrid electric tractor according to claim 1, wherein the fuel cell device of the power supply device is electrically connected to the rechargeable battery device, and the fuel cell device is controlled by the vehicle control module to charge the rechargeable battery device when the charge of the rechargeable battery device is below a certain level.
6. The hybrid electric tractor according to claim 5, wherein the fuel cell device of the power supply device is a hydrogen-oxygen fuel cell assembly.
7. The hybrid electric tractor according to claim 6, wherein the fuel cell means comprises a fuel cell power plant, at least one fuel cell fuel storage device configured to be communicatively coupled to the fuel cell power plant to provide power generation fuel to the fuel cell power plant, and at least one fuel cell cooling device configured to reduce heat generated by the fuel cell power plant of the fuel cell means during power generation.
8. The hybrid electric tractor according to claim 5, wherein the rechargeable battery device of the power supply device is a lithium battery device.
9. The hybrid electric tractor as defined by claim 8 wherein the rechargeable battery comprises at least one lithium-cell battery pack and at least one rechargeable battery cooling device, wherein the rechargeable battery cooling device is configured to reduce heat generated by the rechargeable battery during operation to avoid overheating of the power supply unit due to prolonged operation, and wherein the lithium-cell battery pack is configured to store electrical energy from the fuel-cell unit and transfer the stored electrical energy to the power unit to provide electrical energy to the power unit.
10. The hybrid electric tractor as defined by claim 1 wherein the hybrid electric tractor further comprises an electrical energy processing device, wherein the electrical energy processing device is electrically connectable to the power supply device and the power plant, the electrical energy processing device being configured to boost the voltage from the power supply device and to deliver processed electrical energy to the power plant for normal operation of the power plant.
11. The hybrid electric tractor according to claim 10, wherein the power processing device is electrically connected to the fuel cell power generation device of the fuel cell device of the power supply device and the power device, the power generated by the fuel cell device of the power supply device is directly transmitted to the power processing device, and the voltage of the fuel cell device is boosted by the power processing device and the boosted power is transmitted to the power device for normal operation of the power device.
12. The hybrid electric tractor according to claim 1, wherein the motor means of the power plant is an ac motor.
13. The hybrid electric tractor according to claim 1, wherein the motor controller of the power plant converts the direct current electric power generated by the power plant into alternating current electric power under the control of the control module and transmits the converted alternating current electric power to the motor plant for operation of the motor plant of the power plant.
14. The hybrid electric tractor according to claim 4, wherein the vehicle control module further comprises a power control module, wherein the power control module is used for controlling the operation of the power device, and the motor controller of the power device converts the direct current generated by the power supply device into alternating currents of different frequencies under the control of the power control module of the vehicle control module, thereby changing the rotation speed and the operation direction of the motor device of the power device.
15. The hybrid electric tractor according to claim 1, wherein the drive assembly further comprises a drive shaft, wherein the drive shaft is pivotally connected to the transmission of the drive assembly and to a tire of a tractor body of the hybrid electric tractor such that the drive assembly drives the tractor body to travel via the drive shaft.
16. The hybrid electric tractor as defined by claim 15 wherein the transmission assembly further comprises a power take-off shaft drivingly connected to the transmission assembly transmission and the hybrid tractor operating system to drive the hybrid tractor operating system via the transmission assembly.
17. The hybrid electric tractor according to claim 15 or 16, wherein the transmission of the drive assembly is a gearbox device.
18. The hybrid electric tractor according to claim 15, wherein the motor means of the power means includes at least one in-wheel motor provided to a tire of the tractor body of the hybrid electric tractor to drive travel of the hybrid electric tractor, and at least one transmission motor provided to drive the operation system of the hybrid electric tractor to operate.
19. The hybrid electric tractor according to claim 18, wherein the in-wheel motor and the transmission motor of the motor arrangement of the power plant are operable individually or simultaneously under the control of the power control module of the overall vehicle control module.
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| CN201821695992.4U CN209833416U (en) | 2018-10-18 | 2018-10-18 | Hybrid electric tractor |
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| CN201821695992.4U CN209833416U (en) | 2018-10-18 | 2018-10-18 | Hybrid electric tractor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109591660A (en) * | 2018-10-18 | 2019-04-09 | 丰疆智慧农业股份有限公司 | Hybrid electrically tractor and its drive method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109591660A (en) * | 2018-10-18 | 2019-04-09 | 丰疆智慧农业股份有限公司 | Hybrid electrically tractor and its drive method |
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