CN110001379B - Multi-shaft hybrid vehicle driving system - Google Patents
Multi-shaft hybrid vehicle driving system Download PDFInfo
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- CN110001379B CN110001379B CN201910332364.2A CN201910332364A CN110001379B CN 110001379 B CN110001379 B CN 110001379B CN 201910332364 A CN201910332364 A CN 201910332364A CN 110001379 B CN110001379 B CN 110001379B
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/26—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/36—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
- B60K6/365—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings with the gears having orbital motion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
- B60K6/44—Series-parallel type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/10—Dynamic electric regenerative braking
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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)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Power Engineering (AREA)
- Hybrid Electric Vehicles (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a multi-shaft hybrid power vehicle driving system, which aims to solve the contradiction between the trafficability characteristic and the fuel economy of a multi-shaft vehicle in the prior art.
Description
Technical Field
The invention belongs to the fields of automobile energy saving technology and new energy automobiles, and mainly relates to a multi-shaft vehicle driving system, in particular to a multi-shaft vehicle hybrid power driving system utilizing electromechanical liquid coupling, which has the characteristics of high trafficability and good fuel economy.
Background
The multi-axle vehicle has large cargo carrying capacity and complex and changeable working environment, and in order to improve the trafficability of the multi-axle vehicle, the traditional method utilizes the transfer case to divide the power of the engine to different driving axles, so that the engine with larger power is inevitably selected, and the multi-axle vehicle works on a long-distance road section frequently, so that the condition of 'big maraca' can occur. It can be seen that the traditional multi-axle vehicle has a contradiction between trafficability and fuel economy. The prior art aims at a multi-axle vehicle driving system, mainly utilizes a mechanical transfer case mode to realize high trafficability, and meanwhile, a hydraulic auxiliary driving system is often installed on a front axle of the multi-axle vehicle to carry out auxiliary driving, but the driving technologies often cause that an engine is overlarge in power when being selected, and the fuel economy of the multi-axle vehicle which is frequently transported is poor, namely, the multi-axle vehicle is not provided with the characteristics of good fuel economy and high trafficability. The electromechanical-hydraulic coupling hybrid power driving system is matched with the hub hydraulic driving system, the electronic stepless speed change system and the motor power switching device, so that the contradiction between economy and trafficability in the running process of the multi-axle vehicle can be reasonably solved, the fuel economy can be fully improved, the defect of poor long-distance fuel economy of the multi-axle vehicle is overcome, the switching driving mode of the hub hydraulic motor and the motor power under the condition of small displacement of an engine can be ensured, the multi-axle vehicle realizes time-sharing multi-axle driving, the advantage of hybrid power is fully utilized, and the trafficability of the whole vehicle is improved.
The invention adopts a hydraulic hub motor driving system on a front axle and combines an original rear axle driving system to form a hybrid power system to drive the whole vehicle, thereby solving the defect of poor dynamic property of the traditional rear-drive heavy vehicle on a low-adhesion road surface. The invention combines a set of dual-mode planetary series-parallel system with proper control strategy, plays the advantage of series-parallel mixing system as far as possible, and improves the fuel economy.
In summary, in the existing hybrid vehicle driving system, the hydraulic hub driving technology is used to enhance the passing performance of the vehicle, and in the other direction, the hybrid vehicle driving system is used to enhance the fuel economy, but the hybrid vehicle driving system and the vehicle driving system are combined and applied to the multi-shaft hybrid vehicle, and meanwhile, the hybrid vehicle driving system has the characteristics of high passing performance and good fuel economy. Accordingly, there is a need to provide a multi-axle hybrid vehicle drive system that overcomes the deficiencies of the prior art.
Disclosure of Invention
The invention aims to solve the contradiction between the trafficability and the fuel economy of a multi-axle vehicle in the prior art, combines the prior hybrid power technology and the hub hydraulic driving technology, and provides a multi-axle hybrid power vehicle driving system which not only can fully exert the hybrid power technology to ensure that the fuel economy of the vehicle is improved as much as possible, but also can realize time-sharing all-wheel driving by means of a generator and a motor in the hybrid driving system and combining the hub hydraulic driving technology to ensure that the trafficability of the vehicle is improved as much as possible under complex and changeable road conditions.
In order to solve the technical problems, the invention is realized by adopting the following technical scheme:
The multi-shaft hybrid vehicle driving system comprises an engine 14, a generator 11, an electric motor 7, a planetary gear mechanism 9, a power supply 4, an electric motor control driver 3, an electric motor control driver 5, a hydraulic motor 1, a hydraulic pump 15, a hydraulic valve group 16 and a hydraulic accumulator 18, and is characterized in that the hydraulic pump 15 is connected with an output shaft of an engine power takeoff 13, the hydraulic motor 1 is a hub hydraulic motor, an electric motor output shaft 19 is connected with a sun gear shaft 33 of the planetary gear mechanism through a power switching device 10, an electric motor output shaft 26 is connected with a gear ring 23 of the planetary gear through a power switching device 8, and an engine output shaft 22 is connected with a planet carrier of the planetary gear. The planetary gear mechanism comprises a sun gear 32, a planet wheel 31, a planet carrier 30 and a gear ring 23. The power switching device 10 comprises a synchronous gear 20, a switching synchronous ring 21, a switching gear 35, a synchronous gear 34, a sun gear shaft 33, a main speed reducer 36 and a differential 37; the power switching device 10 switches the power of the generator between the drive axle and the sun gear of the planetary gear set. The power switching device 8 comprises a synchronous gear 24, a switching synchronous ring 28, a switching gear 29, a synchronous gear 27, a main speed reducer 38 and a differential 39; the power switching device 8 switches the power of the motor between the drive axle and the gear ring of the planetary gear set. The main speed reducer of the drive axle is a hyperboloid gear reducer, the output shaft of the generator is a hollow shaft, and the output shaft of the motor is a hollow shaft.
The driving system can work in different modes according to different driving conditions, wherein the driving system comprises the following six modes, one of which is as follows: the rear axle is independently driven, the whole vehicle works in a series-parallel hybrid power mode, and the whole vehicle is in an economical working state in the mode; and two,: all-wheel driving, wherein a generator, a motor and an engine respectively drive a third driving shaft, a fourth driving shaft and a fifth driving shaft, a hub hydraulic driving system drives the first two driving shafts, and the whole vehicle in the mode outputs larger driving force; and thirdly,: the first two shafts are driven, only the hub hydraulic driving system works by using an engine, and enters a creeping mode, and the mode is entered when the whole vehicle has unexpected faults; fourth, it is: and the braking energy recovery A mode is adopted, the generator idles, the motor and the hydraulic accumulator recover braking energy of different degrees according to the braking intensity, and the whole vehicle enters the mode when the mode is used for braking together. Fifth, it is: and the braking energy recovery mode B is that the generator, the motor and the hydraulic accumulator recover braking energy of different degrees according to the braking strength, and the whole vehicle enters the mode when braking is carried out in the mode two. Sixth, it: and the hydraulic accumulator performs braking energy recovery of different degrees according to the braking strength, and the whole vehicle enters the braking mode when the braking is performed in the third mode.
Compared with the prior art, the invention has the beneficial effects that:
1. the series-parallel hybrid power system is applied to the multi-axle vehicle, so that the fuel economy of the whole vehicle can be improved as much as possible;
2. The power output of the generator and the motor is converted from a series-parallel power system to a drive single drive axle by utilizing a power switching device, and the hydraulic hub drive system is combined to realize all-wheel drive, so that the whole vehicle obtains the maximum driving force, and the trafficability of the whole vehicle is improved;
3. The hydraulic hub driving system can realize braking energy recovery by utilizing the energy accumulator when in a braking working condition by adopting an electromechanical-hydraulic coupling hybrid power system, and the generator and the motor can also realize braking energy recovery;
4. The hydraulic driving system of the hub is adopted, so that a creeping control mode can be adopted under the condition that the system fails or a component fails, and the hydraulic driving system of the engine driving hub can drive a vehicle to slowly run;
drawings
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic diagram of the overall architecture of a multi-axle hybrid vehicle drive system according to the present invention;
FIG. 2 is a schematic diagram of a power switching device and planetary gear set transmission according to the present invention;
FIG. 3 is a schematic diagram of a final drive and differential of a drive axle according to the present invention;
FIG. 4 is a schematic illustration of a multi-axis hybrid vehicle drive system of the present invention operating with a rear axle separately driven hybrid drive power switching device and planetary gear set power transfer;
FIG. 5 is a schematic illustration of a multi-axle hybrid vehicle drive system of the present invention operating with a rear axle independently driven hybrid drive system;
FIG. 6 is a schematic illustration of a multi-axle hybrid vehicle drive system of the present invention operating with an all-wheel drive hybrid power switching device and planetary gear set power transmission;
FIG. 7 is a schematic representation of a drive system of the multi-axle hybrid vehicle drive system of the present invention operating in hybrid drive of an all-wheel drive;
FIG. 8 is a schematic representation of the energy flow of the multi-axle hybrid vehicle drive system of the present invention operating in a mode;
FIG. 9 is a schematic energy flow diagram of a multi-axle hybrid vehicle drive system of the present invention operating in mode two;
FIG. 10 is a schematic energy flow diagram of a multi-axle hybrid vehicle drive system of the present invention operating in mode three;
FIG. 11 is a schematic energy flow diagram of a multi-axle hybrid vehicle drive system of the present invention operating in mode four;
FIG. 12 is a schematic energy flow diagram of a multi-axle hybrid vehicle drive system of the present invention operating in mode five;
FIG. 13 is a schematic representation of the energy flow of the multi-axle hybrid vehicle drive system of the present invention operating in mode six;
Detailed Description
The invention is described in detail below with reference to the attached drawing figures:
Referring to fig. 1, the multi-shaft hybrid vehicle drive system includes a hydraulic motor 1, wheels 2, a generator control driver 3, a power source 4, a motor control driver 5, a rear drive axle 6, a motor 7, a power switching device 8, a planetary gear mechanism 9, a power switching device 10, a generator 11, a clutch 12, a power take-off 13, an engine 14, a hydraulic pump 15, a hydraulic valve group 16, a hydraulic line 17, and a hydraulic accumulator 18. Wherein the hydraulic motor 1 is a hub hydraulic motor; the power switching device 10 switches the power of the generator between the drive axle and the sun gear of the planetary gear set; the power switching device 8 switches the power of the motor between the transaxle and the ring gear of the planetary gear set.
Referring to fig. 2, showing details of the power switching device, the power switching device 10 includes a synchronizing gear 20, a switching synchronizing ring 21, a switching gear 35, a synchronizing gear 34, a sun gear shaft 33, a final drive 36, and a differential 37; the switching device 8 comprises a synchronous gear 24, a switching synchronous ring 28, a switching gear 29, a synchronous gear 27, a main reducer 38 and a differential 39; dynamic and planetary row transmission structure diagram. The synchronous gear 20 and the synchronous gear 27 are respectively sleeved on the generator power output shaft 19 and the motor power output shaft 26 in a hollow mode, the generator power output shaft 19 is a hollow shaft, the engine power output shaft 22 penetrates through the center of the generator power output shaft 19 and is connected with a planet carrier of a planet row, the motor power output shaft 26 is a hollow shaft, and the planet row gear ring power output shaft 25 penetrates through the center of the motor power output shaft 26 and is connected with the rear drive axle 6. The power switching principle of the power switching device is similar to the gear shifting principle of a traditional mechanical transmission, when the switching synchronizing ring 21 is shifted leftwards, the switching gear 35 carries the empty synchronizing gear 20 to synchronously rotate under the action of the switching synchronizing ring, namely the power of the generator is transmitted to the synchronizing gear 20, so that the third drive axle is driven; when the switching synchronizing ring 21 is shifted rightwards, the switching gear 35 and the synchronizing gear 34 synchronously rotate under the action of the switching synchronizing ring, namely, the power of the generator is transmitted to the synchronizing gear 34, so that the sun gear 32 in the planetary row is driven, and the series-parallel hybrid power system is formed by the combination of the engine and the motor. When the switching synchronizing ring 28 is shifted leftwards, the switching gear 29 carries the empty synchronizing gear 24 to synchronously rotate under the action of the switching synchronizing ring, namely, the power of the motor is transmitted to the synchronizing gear 24, so that the gear ring in the planetary row is driven, and the engine and the generator are combined into a series-parallel hybrid power system. It should be noted that when the switching synchronizing ring 21 is shifted to the left, the power of the generator drives the third drive axle, and the sun gear of the planetary row is in a free rotation state, so that the sun gear must be locked by the brake (right of the synchronizing gear 34), and the engine can transmit power to the rear via the planetary row and drive the fifth rear axle.
Referring to fig. 3, the final drive and differential of the drive axle are considered to be part of the two power switching devices, wherein the drive axle corresponding to power switching device 10 is shown on the left and the drive axle corresponding to power switching device 8 is shown on the right. 36. 38 are main speed reducers, 37 and 39 are differentials, wherein the input end of the main speed reducer 36 is a synchronous gear 20, and the input end of the main speed reducer 38 is a synchronous gear 27. It is worth to say that, because the main reducer is a hyperboloid gear reducer, the main reducer input shaft and the output shaft have eccentricity in space, so that interference between the differential and the main reducer input shaft (namely, the motor power output shaft or the motor power output shaft) can not be generated under certain large main reducer conditions.
Referring to fig. 4 and fig. 5, in fig. 4, it can be seen that the power output shaft of the generator drives the sun gear of the planetary gear, and the power output shaft of the motor drives the ring gear of the planetary gear, and in fig. 5, a simplified power transmission configuration diagram of the power switching device according to fig. 4 is shown. It can be seen that in the mode, the rear axle is independently driven, the three power sources of the engine, the motor and the generator form a series-parallel hybrid power system through the planetary rows, and the hub hydraulic driving system controls the hydraulic valve group so that the hydraulic motor does not output energy or absorb energy, and the hydraulic motor is in a bypass state; the synchronous gear of the generator is synchronous with the sun gear of the planetary gear, the synchronous gear of the motor is synchronous with the gear ring of the planetary gear, namely, the engine is connected with the planet carrier, the generator is connected with the sun gear, and the motor is connected with the gear ring, and finally, the power is output through the central shaft of the gear ring to drive the fifth drive axle, the generator and the motor work according to the corresponding working condition by matching with the engine, and the fuel economy of the hybrid power drive system can be fully exerted under the whole vehicle working condition of the multi-axle vehicle. Normally, the vehicle is operated in this mode, improving fuel economy as much as possible.
Referring to fig. 6 and 7, in fig. 6, it can be seen that, from the power switching device, the generator switches power to drive the driving axle (third driving axle), the motor also switches power to drive the driving axle (fourth driving axle), the sun gear in the planetary row is locked, the engine drives the fifth driving axle after the planetary row performs speed ratio conversion, from fig. 7, the power switching device a is a dashed frame a part in fig. 6, the power output shaft of the generator is used as the input of the power switching device a, two half shafts of the third driving axle are used as the output of the power switching device a, the power switching device B is a dashed frame B part in fig. 6, the power output shaft of the motor is used as the input of the power switching device B, and two half shafts of the fourth driving axle are used as the output of the power switching device B; meanwhile, a hydraulic hub driving system is added, so that the first driving axle and the second driving axle are driven by a hub hydraulic motor; it can be seen that in this mode the vehicle is in an all wheel drive condition, the hub hydraulic motor, engine, generator, motor driving the first and second, third, fourth and fifth drive axles respectively, in which case the vehicle obtains maximum drive force, enabling a stronger throughput of the whole vehicle.
Referring to fig. 8, the rear axle is driven independently, and the three power sources of the generator, the motor and the engine are matched with the planetary gear set, so that the whole vehicle works in a series-parallel hybrid power mode. Under the mode, the engine outputs power, the motor and the generator continuously output power to discharge or generate electricity to charge the battery under the logic control of the whole vehicle controller, and then the engine, the motor and the generator are combined through the planet row to form the whole series-parallel system to output power to drive the fifth drive axle.
Referring to fig. 9, the wheel hub hydraulic driving system, the generator, the motor and the engine respectively drive the first driving shaft, the second driving shaft, the third driving shaft, the fourth driving shaft and the fifth driving shaft, so that the power output by the generator and the motor discharges the storage battery, the power output by the engine passes through the planetary gear set to output power, and the hydraulic pump takes part of the engine power through the power takeoff to drive the hydraulic motor to rotate.
Referring to fig. 10, the hydraulic drive system operates in a mode in which the hydraulic pump takes part of the engine power through the power take-off to drive the hydraulic motor to rotate. The series-parallel hybrid power system does not work.
Referring to fig. 11, the braking energy recovery a mode is a mode in which braking is performed to enter this mode. The hydraulic motor charges the accumulator in reverse, thereby providing an additional source of energy for the next actuation of the hydraulic motor. Similarly, the series-parallel hybrid power system generates power through the motor, the planet carrier connected with the engine is locked, and the generator idles, and does not generate power or consume power.
Referring to fig. 12, the braking energy recovery B mode is braking in mode two to enter this mode. The hydraulic motor charges the accumulator in reverse, thereby providing an additional source of energy for the next actuation of the hydraulic motor. The generator is driven by the third drive axle in the reverse direction to generate electricity, and the motor is driven by the fourth drive axle in the reverse direction to generate electricity.
Referring to fig. 13, the braking energy recovery C mode is entered by braking in mode three. The hydraulic motor charges the accumulator in reverse, providing an additional source of energy for the next actuation of the hydraulic motor.
Claims (1)
1. The multi-shaft hybrid vehicle driving system comprises an engine (14), a generator (11), a motor (7), a planetary gear mechanism (9), a power supply (4), a generator control driver (3), a motor control driver (5), a hydraulic motor (1), a hydraulic pump (15), a hydraulic valve group (16) and a hydraulic accumulator (18), and is characterized in that the hydraulic pump (15) is connected with a power takeoff (13) of the engine, the hydraulic motor is a hub hydraulic motor, a generator output shaft (19) is connected with a sun gear shaft (33) of the planetary gear mechanism through a first power switching device (10), the motor output shaft (26) is connected with the gear ring (23) of the planetary row through a second power switching device (8), the engine output shaft (22) is connected with the planet carrier of the planetary row, the planetary row mechanism comprises a sun gear (32), a planet wheel (31), a planet carrier (30) and the gear ring (23), and the first power switching device (10) comprises a first synchronous gear (20), a first switching synchronous ring (21), a first switching gear (35), a second synchronous gear (34), a sun gear shaft (33), a first main speed reducer (36) and a first differential mechanism (37); the first power switching device (10) switches the power of the generator between the drive axle and the sun gear of the planetary row, and the second power switching device (8) comprises a third synchronous gear (24), a second switching synchronous ring (28), a second switching gear (29), a fourth synchronous gear (27), a second main reducer (38) and a second differential (39); the second power switching device (8) switches the power of the motor between the drive axle and the gear rings of the planetary rows, when the first switching synchronizing ring is shifted leftwards, the first switching gear carries the first synchronizing gear which is sleeved with the first switching synchronizing ring to synchronously rotate under the action of the first switching synchronizing ring, namely the power of the generator is transmitted to the first synchronizing gear, so that the third drive axle is driven; when the first switching synchronizing ring is shifted rightwards, the first switching gear and the second synchronizing gear synchronously rotate under the action of the first switching synchronizing ring, namely the power of the generator is transmitted to the second synchronizing gear, so that the sun gear in the planetary row is driven, and the engine and the motor are combined into a series-parallel hybrid power system; when the second switching synchronizing ring is shifted leftwards, the second switching gear carries the third synchronizing gear which is in the idle state to synchronously rotate under the action of the second switching synchronizing ring, namely the power of the motor is transmitted to the third synchronizing gear, so that the gear ring in the planetary row is driven, the engine and the generator are combined into a series-parallel hybrid power system, and when the second switching synchronizing ring is shifted rightwards, the second switching gear and the fourth synchronizing gear synchronously rotate under the action of the second switching synchronizing ring, namely the power of the motor is transmitted to the fourth synchronizing gear, so that the fourth driving axle is driven; when the first switching synchronizing ring is shifted leftwards, the power of the generator drives the third drive axle, and the sun gear of the planetary row is in a free rotation state, so that the sun gear is locked through a brake, and the engine can transmit power backwards by virtue of the planetary row and drive the fifth rear axle; the main speed reducer of the drive axle is a hyperboloid gear speed reducer; the electric generator output shaft is a hollow shaft, the electric motor output shaft is a hollow shaft, the driving system can work in different modes according to different driving conditions, and the electric generator output shaft comprises the following six modes, namely: the rear axle is independently driven, the whole vehicle works in a series-parallel hybrid power mode, and the whole vehicle is in an economical working state in the mode; and two,: all-wheel driving, wherein a generator, a motor and an engine respectively drive a third driving shaft, a fourth driving shaft and a fifth driving shaft, a hub hydraulic driving system drives the first two driving shafts, and the whole vehicle in the mode outputs larger driving force; and thirdly,: the first two shafts are driven, only the hub hydraulic driving system works by using an engine, and enters a creeping mode, and the mode is entered when the whole vehicle has unexpected faults; fourth, it is: the braking energy recovery mode A is characterized in that the generator idles, the motor and the hydraulic accumulator recover braking energy to different degrees according to the braking intensity, and the whole vehicle enters the braking mode when braking is carried out in the mode; fifth, it is: the braking energy recovery mode B comprises the steps that the generator, the motor and the hydraulic accumulator recover braking energy of different degrees according to braking intensity, and the whole vehicle enters a mode when braking is carried out in the mode two; sixth, it: and the hydraulic accumulator performs braking energy recovery of different degrees according to the braking strength, and the whole vehicle enters the braking mode when the braking is performed in the third mode.
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| CN110422043A (en) * | 2019-08-30 | 2019-11-08 | 吉林大学 | A kind of hydraulic unmanned chassis of auxiliary multi-wheel combination drive |
| CN110588323B (en) * | 2019-10-29 | 2020-04-17 | 吉林大学 | Oil-electricity hybrid power system of continuous oil pipe operation vehicle |
| CN110962616B (en) * | 2019-12-20 | 2021-01-22 | 湘潭大学 | Vehicle composite energy system integrating hydraulic power and battery and control method thereof |
| CN111267600B (en) * | 2020-03-04 | 2021-02-09 | 中国矿业大学 | Multi-power coupling timely full-drive system of heavy transport vehicle and control method |
| CN111942159A (en) * | 2020-08-14 | 2020-11-17 | 江苏电子信息职业学院 | Braking energy recovery system of electric automobile and control method |
| CN114906037B (en) * | 2021-02-09 | 2023-03-14 | 沈阳新松机器人自动化股份有限公司 | Emergency rescue car robot exhibition receipts power of getting mechanism |
| CN113022544B (en) * | 2021-04-29 | 2022-10-11 | 吉林大学 | Power split type hybrid power system and parameter matching method thereof |
| CN113147377B (en) * | 2021-05-10 | 2022-04-19 | 上海中科深江电动车辆有限公司 | Single-motor electro-hydraulic hybrid driving system |
| CN113700432B (en) * | 2021-08-26 | 2024-06-04 | 廊坊双力钻探设备制造有限公司 | Power system for drill rod drilling rig and drill rod drilling rig |
| CN116101086B (en) * | 2023-04-11 | 2023-06-13 | 唐山昌宏科技有限公司 | Intelligent speed increasing device of mining electric drive vehicle |
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