CN117284266A - Hybrid power driving system and method of loader and loader - Google Patents
Hybrid power driving system and method of loader and loader Download PDFInfo
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- CN117284266A CN117284266A CN202311272336.9A CN202311272336A CN117284266A CN 117284266 A CN117284266 A CN 117284266A CN 202311272336 A CN202311272336 A CN 202311272336A CN 117284266 A CN117284266 A CN 117284266A
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 239000010720 hydraulic oil Substances 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000004134 energy conservation Methods 0.000 abstract description 4
- 239000000446 fuel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/20—Conjoint control of vehicle sub-units of different type or different function including control of steering systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/24—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means
- B60W10/26—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means for electrical energy, e.g. batteries or capacitors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/30—Conjoint control of vehicle sub-units of different type or different function including control of auxiliary equipment, e.g. air-conditioning compressors or oil pumps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Hybrid Electric Vehicles (AREA)
- Operation Control Of Excavators (AREA)
Abstract
The utility model provides a hybrid power driving system, method and loader of loader, includes engine, ISG motor, steering pump, group battery, walking motor, work hydraulic motor, complete machine controller, engine, ISG motor and steering pump are transmission connection in proper order, ISG motor, walking motor, work hydraulic motor are connected with the group battery through complete machine controller respectively, engine, steering pump are connected with complete machine controller respectively, walking motor, work hydraulic motor still are connected with the ISG motor respectively. The whole machine controller judges whether the power required by the running system, the working hydraulic system and the steering system can be met according to the acquired power requirements and the battery pack SOC values output by the running system, the working hydraulic system and the steering system, so as to control the output power of the ISG motor and/or the battery pack, coordinate the running system, the working hydraulic system and the steering system to work, improve the energy utilization rate and achieve the purposes of energy conservation and consumption reduction.
Description
Technical Field
The invention relates to the field of engineering machinery, in particular to a hybrid power driving system and method of a loader and the loader.
Background
The traditional fuel loader adopts an engine, a torque converter, a gearbox and a drive axle to transmit driving force so as to meet the running requirement of the whole machine, and a force taking port is arranged through the gearbox to output driving force to a working pump so as to meet the hydraulic power requirement. Because the efficient section of the torque converter is narrower, the working efficiency of the loader is mostly lower than 70%, and more than 30% of energy is wasted in a heating mode, the energy utilization efficiency of the loader is low, and meanwhile, in order to meet the power requirements of walking, working and steering, the power selection of the engine is generally larger, so that flameout caused by insufficient power is prevented, the cost is higher, and the noise is larger.
The electric loader transmits driving force through a battery and a motor, transmits driving force through a traveling motor, a transmission shaft and a driving axle to meet the requirement of whole machine traveling, and outputs driving force to a working pump or a steering pump through a hydraulic motor to meet the requirement of hydraulic power. The power requirement of the motor is completely supplied by the battery, so that the power requirements of walking, working and steering are met, the total electric quantity requirement of the battery is larger, and the power needs to be stopped for charging to meet the requirement of 8 hours of the conventional endurance capacity of the loader, so that the cost is higher.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a hybrid power driving system and method of a loader and the loader. The power output of the engine and the battery can be coordinated according to the power requirements of the walking, working and steering systems of the loader, the energy utilization rate is improved, and the purposes of energy conservation and consumption reduction are achieved.
The invention provides a hybrid power driving system of a loader, which comprises an engine, an ISG motor, a steering pump, a battery pack, a traveling motor, a working hydraulic motor and a complete machine controller, wherein the engine, the ISG motor and the steering pump are sequentially connected in a transmission way, the ISG motor converts kinetic energy of the engine into electric energy, and meanwhile, the power of the engine is transmitted to the steering pump; the ISG motor, the walking motor and the working hydraulic motor are respectively connected with the battery pack through a complete machine controller; the engine and the steering pump are respectively connected with the whole machine controller, and the walking motor and the working hydraulic motor are also respectively connected with the ISG motor through the whole machine controller.
Preferably, a walking motor controller is arranged between the walking motor and the whole machine controller, a working hydraulic motor controller is arranged between the working hydraulic motor and the whole machine controller, and the whole machine controller is connected with the walking motor controller and the working hydraulic motor controller through CAN buses respectively.
Preferably, the engine, the steering pump and the battery pack are respectively provided with a control unit, and the complete machine controller is respectively connected with the control units on the engine, the steering pump and the battery pack through a CAN bus.
Preferably, the hybrid power driving system further comprises a steering system, a traveling system and a working hydraulic system, wherein the steering system comprises a priority valve and a steering device, and the steering device is connected with a steering pump through the priority valve; the walking system comprises a transmission shaft and a walking device, and the walking device is connected with a walking motor through the transmission shaft; the working hydraulic system comprises a working pump, a multi-way valve and a working device, wherein the working hydraulic motor is in transmission connection with the working pump, and the working device is connected with the working pump through the multi-way valve.
Preferably, the priority valve is connected with the multi-way valve through a pipeline.
A second aspect of the present invention proposes a driving method of a hybrid drive system of a loader, the method comprising the steps of: the whole machine controller obtains the running states of the walking motor, the working hydraulic motor and the steering pump through a CAN bus; the whole machine controller acquires the SOC value of the battery pack through the CAN bus and judges whether the SOC value of the battery pack meets the power required by the walking motor, the working hydraulic motor and the steering pump; thereby controlling the ISG motor and/or the battery pack to output power to the traveling motor, the working hydraulic motor and the steering pump.
Wherein, running states of the walking motor, the working hydraulic motor and the steering pump comprise:
the whole machine controller receives the walking signal and then transmits the walking signal to the walking motor controller, and the walking motor controller controls the walking motor to drive a walking system according to the vehicle speed signal so as to drive the whole machine to walk;
the whole machine controller receives the working signal and then transmits the working signal to the working hydraulic motor controller, and the working hydraulic motor controller controls the working hydraulic motor to drive the working pump according to the pressure signal of the working hydraulic system so as to drive the working hydraulic system to work;
the whole machine controller receives the steering signal and transmits the steering signal to a control unit on the steering pump, and the control unit of the steering pump controls the opening degree of a valve core of the steering pump according to the pressure signal of the steering hydraulic system so as to drive steering action
The whole machine controller obtains the SOC value of the battery pack through the CAN bus and judges the SOC value by the following steps:
when the SOC of the battery is higher than the power required by the walking motor, the working hydraulic motor and the steering pump, the engine does not work, and the whole machine controller controls the battery pack to provide power for the walking motor, the working hydraulic motor and the ISG motor so as to drive the whole machine to work;
the battery SOC is lower than the power required by the walking motor, the working hydraulic motor and the steering pump, the whole machine controller controls the engine to drive the ISG motor to generate power and controls the ISG motor to provide power for the walking motor and the working hydraulic motor to drive the whole machine to work, and meanwhile, the ISG motor charges the battery pack;
when the power requirement of the combined operation of the whole machine is larger than the power output, the whole machine controller controls the ISG motor and the battery pack to simultaneously provide power to drive the whole machine to work.
When the steering action is not executed, the complete machine controller controls hydraulic oil to flow to a hydraulic multi-way valve of the steering system for driving the working device.
A third aspect of the invention proposes a loader comprising a hybrid drive system of a loader as described above.
The beneficial effects of the invention are as follows:
1. the invention provides a hybrid power driving system and method of a loader and the loader, and the power requirements and battery pack SOC values output by a running system, a working hydraulic system and a steering system are obtained through a complete machine controller, so that whether the power required by the running system, the working hydraulic system and the steering system can be met or not is judged, and the output power of an ISG motor and/or a battery pack is controlled, so that the running system, the working hydraulic system and the steering system are coordinated to work, the energy utilization rate is improved, and the purposes of energy conservation and consumption reduction are achieved.
2. The invention provides a hybrid power driving system of a loader, which reduces a gearbox and a torque converter, namely reduces the energy consumption of a running system, and achieves the purposes of energy conservation and consumption reduction.
3. The invention provides a hybrid power driving system and a driving method of a loader, which can realize the optimal control of an engine working area through the power output distribution of an engine, an ISG motor and a battery pack, so that the overall system is more efficient, and the fuel economy of the whole loader is further improved.
4. The invention provides a loader, which comprises the hybrid power driving system and the hybrid power driving method, can reduce the power and torque requirements of an engine, and can improve the working efficiency and save the cost compared with the existing high-power, large-displacement engine and/or large-battery pack.
5. The invention provides a loader, which comprises the hybrid power driving system and the hybrid power driving method, can reduce the power requirement of a battery pack, does not need to stop charging, and can meet the endurance capability, save the cost and improve the working efficiency compared with the existing high-power battery pack.
Drawings
FIG. 1 is a schematic diagram of the present invention;
in the figure: 1. an ISG motor; 2. an engine; 3. a complete machine controller; 4. a battery pack; 5. a walking motor controller; 6. a working pump; 7. a walking motor; 8. a transmission shaft; 9. a walking device; 10. a walking system; 11. A steering pump; 12. working a hydraulic motor controller; 13. working a hydraulic motor; 14. a priority valve; 15. a multiway valve; 16. a working hydraulic system; 17. a working device; 18. a steering device; 19. a steering system.
Description of the embodiments
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1, a hybrid power driving system of a loader comprises an engine 2, an ISG motor 1, a steering pump 11, a battery pack 4, a traveling motor 7, a working hydraulic motor 13 and a complete machine controller 3, wherein an output shaft of the engine 2 is fixedly connected with an input shaft of the ISG motor 1, an output shaft of the ISG motor 1 is fixedly connected with an input shaft of the steering pump 11, and the engine 2 is respectively arranged on the same axis with working shafts of the ISG motor 1 and the steering pump 11; the ISG motor 1 converts kinetic energy of the engine 2 into electric energy while transmitting power of the engine 2 to the steering pump 11. The ISG motor 1, the walking motor 7 and the working hydraulic motor 13 are respectively connected with the battery pack 4 through the whole machine controller 3, the walking motor controller 5 is arranged between the walking motor 7 and the whole machine controller 3, the working hydraulic motor controller 12 is arranged between the working hydraulic motor 13 and the whole machine controller 3, and the whole machine controller 3 is respectively connected with the walking motor controller 5 and the working hydraulic motor controller 12 through a CAN bus. The engine 2, the ISG motor 1, the steering pump 11 and the battery pack 4 are respectively provided with a control unit, and the whole machine controller 3 is respectively connected with the control units on the engine 2, the ISG motor 1, the steering pump 11 and the battery pack 4 through a CAN bus. The complete machine controller 3 obtains the running states required by the walking motor 7, the working hydraulic motor 13 and the steering pump 11 through the CAN bus, and judges whether the power required by the walking motor 7, the working hydraulic motor 13 and the steering pump 11 CAN be met or not. The traveling motor 7, the working hydraulic motor 13 and the ISG motor 1 are respectively and electrically connected with the battery pack 4, and meanwhile, the traveling motor 7 and the working hydraulic motor 13 are respectively and also connected with the ISG motor 1, so that the whole machine controller 3 can control the ISG motor 1 and/or the battery pack 4 to provide power for the traveling motor 7 and the working hydraulic motor 13.
Specifically, the hybrid power driving system further comprises a steering system 19, a traveling system 10 and a working hydraulic system 16, wherein the steering system 19 comprises a priority valve 14 and a steering device 18, and the steering device 18 is connected with the steering pump 11 through the priority valve 14; the whole machine controller 3 receives the steering signal and then transmits the steering signal to a control unit on the ISG motor 1, the ISG motor 1 drives the steering pump 11 to work, meanwhile, the whole machine controller 3 receives the steering signal and then transmits the steering signal to the control unit on the steering pump 11, and the control unit on the steering pump 11 controls the opening degree of the valve core according to the pressure signal of the steering hydraulic system so as to drive the steering action. The traveling system 10 comprises a transmission shaft 8 and a traveling device 9, and the traveling device 9 is connected with the traveling motor 7 through the transmission shaft 8; the whole machine controller 3 receives the walking signal and transmits the walking signal to the walking motor controller 5, and the walking motor controller 5 controls the walking motor 7 to drive the walking system 10 according to the vehicle speed signal so as to drive the whole machine to walk. The working hydraulic system 16 comprises a working pump 6, a multi-way valve 15 and a working device 17, the working hydraulic motor 13 is in transmission connection with the working pump 6, the working device 17 is connected with the working pump 6 through the multi-way valve 15, the whole machine controller 3 receives working signals and transmits the working signals to the working hydraulic motor controller 12, and the working hydraulic motor controller 12 controls the working hydraulic motor 13 to drive the working pump 6 according to the pressure signals of the working hydraulic system 16 so as to drive the working hydraulic system 16 to work.
The whole machine controller 3 obtains the running states of the walking motor 7, the working hydraulic motor 13 and the steering pump 11 through a CAN bus; the whole machine controller 3 obtains the SOC value of the battery pack through the CAN bus and judges whether the SOC value of the battery pack meets the power required by the walking motor 7, the working hydraulic motor 13 and the steering pump 11; thereby controlling the ISG motor 1 and/or the battery pack 4 to output power to the travel motor 7, the working hydraulic motor 13, and the steering pump 11.
Specifically, when the battery SOC is higher than the power required by the running motor 7, the working hydraulic motor 13 and the steering pump 11, the engine 2 does not work, and the whole machine controller 3 controls the battery pack 4 to provide power for the running motor 7, the working hydraulic motor 13 and the ISG motor 1 so as to drive the whole machine to work;
the battery SOC is lower than the power required by the traveling motor 7, the working hydraulic motor 13 and the steering pump 11, the whole machine controller 3 controls the engine 2 to drive the ISG motor 1 to generate power and controls the ISG motor 1 to provide power for the traveling motor 7 and the working hydraulic motor 13, the ISG motor 1 drives the steering pump 11 to work, the traveling motor 7 drives the traveling system 10 to work, the working hydraulic motor 13 drives the working hydraulic system 16 to work, and meanwhile, the ISG motor 1 charges the battery pack 4;
when the power required by the combined operation of the whole machine is larger than the power output, namely, the power required by the traveling motor 7, the working hydraulic motor 13 and the steering pump 11 is larger than the power generated by the battery SOC and the ISG motor 1, the whole machine controller 3 controls the battery pack 4 to provide power, meanwhile, the whole machine controller 3 controls the engine 2 to drive the ISG motor 1 to generate power, and the battery pack 4 and the ISG motor 1 simultaneously provide power to drive the whole machine to work.
Preferably, the priority valve 14 of the steering system 19 is connected to the multiple-way valve 15 of the working hydraulic system 16 through a pipeline, and when the steering system 19 does not perform steering operation, the overall controller 3 controls the hydraulic oil to flow into the multiple-way valve 15 of the steering system 19, so as to drive the working device 17, and improve the energy utilization efficiency.
The present embodiment also provides a loader including the hybrid driving system of the loader as described above, and controlled by the above-described hybrid driving method for a loader. The whole machine controller 3 acquires states of the loader traveling system 10, the working hydraulic system 16 and the steering system 19 and the SOC of the battery pack 4 through the CAN bus, so that whether power required by the traveling system 10, the working hydraulic system 16 and the steering system 19 CAN be met or not is judged, the output power of the ISG motor 1 and/or the battery pack 4 is controlled, and the traveling system 10, the working hydraulic system 16 and the steering system 19 are coordinated to work, so that the whole machine is driven to work.
The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (10)
1. The hybrid power driving system of the loader is characterized by comprising an engine (2), an ISG motor (1), a steering pump (11), a battery pack (4), a traveling motor (7), a working hydraulic motor (13) and a complete machine controller (3), wherein the engine (2), the ISG motor (1) and the steering pump (11) are sequentially connected in a transmission way, and the ISG motor (1) converts kinetic energy of the engine (2) into electric energy and simultaneously transmits the power of the engine (2) to the steering pump (11); ISG motor (1), walking motor (7), work hydraulic motor (13) are connected with group battery (4) through complete machine controller (3) respectively, engine (2), steering pump (11) are connected with complete machine controller (3) respectively, walking motor (7), work hydraulic motor (13) still are connected with ISG motor (1) through complete machine controller (3) respectively.
2. The hybrid power driving system for the loader according to claim 1, wherein a traveling motor controller (5) is arranged between the traveling motor (7) and the complete machine controller (3), a working hydraulic motor controller (12) is arranged between the working hydraulic motor (13) and the complete machine controller (3), and the complete machine controller (3) is respectively connected with the traveling motor controller (5) and the working hydraulic motor controller (12) through a CAN bus.
3. The hybrid power driving system for the loader according to claim 1, wherein control units are respectively arranged on the engine (2), the ISG motor (1), the steering pump (11) and the battery pack (4), and the control units on the engine (2), the ISG motor (1), the steering pump (11) and the battery pack (4) are respectively connected through a CAN bus by the complete machine controller (3).
4. Hybrid drive system for a loader according to claim 1, characterized in that it further comprises a steering system (19), a travelling system (10) and a working hydraulic system (16), the steering system (19) comprising a priority valve (14) and a steering device (18), the steering device (18) being connected to the steering pump (11) via the priority valve (14); the walking system (10) comprises a transmission shaft (8) and a walking device (9), and the walking device is connected with the walking motor (7) through the transmission shaft (8); the working hydraulic system (16) comprises a working pump (6), a multi-way valve (15) and a working device (17), the working hydraulic motor (13) is in transmission connection with the working pump (6), and the working device (17) is connected with the working pump (6) through the multi-way valve (15).
5. Hybrid drive system for a loader according to claim 4, characterized in that the priority valve (14) is connected with the multiplex valve (15) by means of a pipe.
6. The driving method of the hybrid drive system for a loader according to any one of claims 1 to 5, wherein the complete machine controller (3) acquires the running states of the travel motor (7), the working hydraulic motor (13) and the steering pump (11) through a CAN bus; the whole machine controller (3) acquires the SOC value of the battery pack (4) through a CAN bus and judges whether the SOC value of the battery pack (4) meets the power required by the walking motor (7), the working hydraulic motor (13) and the steering pump (11); thereby controlling the output power of the ISG motor (1) and/or the battery pack (4) to the traveling motor (7), the working hydraulic motor (13) and the steering pump (11).
7. The driving method of the hybrid drive system of the loader according to claim 6, wherein the operating states of the travel motor (7), the working hydraulic motor (13), and the steering pump (11) include:
the whole machine controller (3) receives the walking signal and then transmits the walking signal to the walking motor controller (5), and the walking motor controller (5) controls the walking motor (7) to drive the walking system (10) according to the vehicle speed signal so as to drive the whole machine to walk;
the whole machine controller (3) receives the working signal and then transmits the working signal to the working hydraulic motor controller (12), and the working hydraulic motor controller (12) controls the working hydraulic motor (13) to drive the working pump (6) according to the pressure signal of the working hydraulic system (16) so as to drive the working hydraulic system (16) to work;
the whole machine controller (3) receives the steering signal and then transmits the steering signal to a control unit on the steering pump (11), and the control unit on the steering pump (11) controls the opening degree of a valve core of the steering pump (11) according to the pressure signal of the steering hydraulic system so as to drive steering action.
8. The driving method of the hybrid power driving system for a loader according to claim 6, wherein the overall machine controller (3) obtains and judges the SOC value of the battery pack (4) through the CAN bus, by:
when the battery SOC is higher than the power required by the walking motor (7), the working hydraulic motor (13) and the steering pump (11), the engine (2) does not work, and the whole machine controller (3) controls the battery pack (4) to provide power for the walking motor (7), the working hydraulic motor (13) and the ISG motor (1) so as to drive the whole machine to work;
the battery SOC is lower than the power required by the walking motor (7), the working hydraulic motor (13) and the steering pump (11), the whole machine controller (3) controls the engine (2) to drive the ISG motor (1) to generate power, controls the ISG motor (1) to provide power for the walking motor (7) and the working hydraulic motor (13), drives the whole machine to work, and simultaneously the ISG motor (1) charges the battery pack (4);
when the power requirement of the combined operation of the whole machine is larger than the power output, the whole machine controller (3) controls the ISG motor (1) and the battery pack (4) to simultaneously provide power to drive the whole machine to work.
9. The method for driving the hybrid drive system for a loader according to claim 6, wherein the complete machine controller (3) controls the hydraulic oil to merge into the hydraulic multiplex valve (15) of the steering system (19) for driving the working device (17) when the steering operation is not performed.
10. A loader comprising the hybrid drive system for a loader according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311272336.9A CN117284266A (en) | 2023-09-28 | 2023-09-28 | Hybrid power driving system and method of loader and loader |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311272336.9A CN117284266A (en) | 2023-09-28 | 2023-09-28 | Hybrid power driving system and method of loader and loader |
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| CN117284266A true CN117284266A (en) | 2023-12-26 |
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| CN202311272336.9A Pending CN117284266A (en) | 2023-09-28 | 2023-09-28 | Hybrid power driving system and method of loader and loader |
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| CN203463396U (en) * | 2013-07-29 | 2014-03-05 | 徐工集团工程机械股份有限公司科技分公司 | Third oil source system for loading machine |
| CN204870528U (en) * | 2015-07-01 | 2015-12-16 | 潍柴动力股份有限公司 | Electric liquid hybrid power system of vehicle oil |
| CN108790780A (en) * | 2018-03-22 | 2018-11-13 | 河南科技大学 | A kind of control method of new oil electricity mixing sweeper power drive system |
| CN209368915U (en) * | 2018-12-28 | 2019-09-10 | 徐工集团工程机械股份有限公司科技分公司 | Driving control system applied to pure electric vehicle loading machine |
| CN111231648A (en) * | 2020-02-06 | 2020-06-05 | 江苏大学 | Power transmission system of hybrid power forklift and control method thereof |
| CN113135223A (en) * | 2021-04-25 | 2021-07-20 | 徐工集团工程机械股份有限公司科技分公司 | Steering drive control system and engineering machinery |
| CN113911097A (en) * | 2021-10-12 | 2022-01-11 | 东风越野车有限公司 | Control system and control method of hybrid vehicle with single ISG motor |
| CN116119533A (en) * | 2023-01-10 | 2023-05-16 | 徐州重型机械有限公司 | Electric drive hybrid power transmission crane |
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