CN111098924B - Special chassis of all-wheel drive hybrid electric vehicle without intermediate transmission shaft and control method thereof - Google Patents
Special chassis of all-wheel drive hybrid electric vehicle without intermediate transmission shaft and control method thereof Download PDFInfo
- Publication number
- CN111098924B CN111098924B CN202010041763.6A CN202010041763A CN111098924B CN 111098924 B CN111098924 B CN 111098924B CN 202010041763 A CN202010041763 A CN 202010041763A CN 111098924 B CN111098924 B CN 111098924B
- Authority
- CN
- China
- Prior art keywords
- engine
- frame
- wheel
- shaft
- vehicle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/18—Understructures, i.e. chassis frame on which a vehicle body may be mounted characterised by the vehicle type and not provided for in groups B62D21/02 - B62D21/17
-
- 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
-
- 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
- B60K6/40—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 assembly or relative disposition of components
- B60K6/405—Housings
-
- 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
- B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
- B60K6/52—Driving a plurality of drive axles, e.g. four-wheel drive
-
- 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
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/32—Control or regulation of multiple-unit electrically-propelled vehicles
- B60L15/38—Control or regulation of multiple-unit electrically-propelled vehicles with automatic control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/61—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D11/00—Steering non-deflectable wheels; Steering endless tracks or the like
- B62D11/02—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides
- B62D11/04—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of separate power sources
-
- 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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/421—Speed
-
- 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
-
- 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
Abstract
The invention discloses a special chassis of an all-wheel drive hybrid electric vehicle without an intermediate transmission shaft, which comprises: a frame; the front transmission device is arranged at one end of the frame and drives front wheels of the hybrid electric vehicle; a rear drive axle assembly which is arranged at the other end of the frame and drives rear wheels of the hybrid electric vehicle; and the power battery pack is used for providing power for the rear drive axle assembly. The invention also discloses a special chassis control method of the all-wheel drive hybrid electric vehicle without the intermediate transmission shaft, which precisely controls the rotation speeds of the two driving motors through the ECU according to the rotation speed of the engine, so that the vehicle runs more smoothly, the driving is simpler, and the passengers feel more comfortable.
Description
Technical Field
The invention relates to the technical field of automobile chassis, in particular to a special chassis of an all-wheel drive hybrid electric vehicle without an intermediate transmission shaft and a control method thereof.
Background
The hybrid electric vehicle generally refers to a vehicle with power energy provided by oil and electricity hybrid, and has the advantages of improving the fuel economy of the whole vehicle, reducing pollutant emission and the like. On the premise that the problems of battery energy density and the like are not solved substantially temporarily, the related research of the hybrid electric vehicle is obviously a better solving way, and the related technology of hybrid electric drive in China is widely used on passenger vehicles and commercial vehicles, but the special chassis design of the hybrid electric vehicle is further researched deeply according to the actual situation in China.
The arrangement form of the engine of the automobile can be divided into a front position, a middle position and a rear position according to the position of the engine relative to the chassis, wherein the front position is the most common, and the arrangement form can optimize the whole automobile space to the maximum extent, simultaneously, the structure of the power and the drive train is more compact, the maintenance is convenient, and the safety of passengers in the automobile is improved. In addition, the engine can be divided into transverse arrangement and longitudinal arrangement according to the direction of an engine output shaft, wherein the longitudinal arrangement of the engine can optimize the front and rear axle weights, so that the front and rear axle load ratio is close to an ideal 50:50, the balance of the chassis under the limiting working condition is improved, and meanwhile, for a rear-drive vehicle, the longitudinal arrangement of the engine can obviously improve the transmission efficiency due to the reduction of the number of direction conversion times of power transmission. In addition, for the transportation vehicles with large dead weight and load, the output power of the engine is usually larger in consideration of the power performance requirement of the whole vehicle, the size of the engine is also relatively larger, and the width limit of large vehicles in China is 2550mm, which means that the engine can only be in a longitudinal arrangement mode, and the arrangement of the power system of the whole vehicle is a great test.
Conventional vehicles, which are intended to achieve four-wheel drive, necessarily require an intermediate drive shaft to effect transfer and adjustment of power between the front and rear axles through a transfer case. In theory, the engine is longitudinally arranged to realize four-wheel drive, compared with the transverse engine, the power transmission loss can be obviously reduced, the four-wheel drive is more beneficial to realization, but the middle transmission shaft is not easy to arrange a vehicle chassis due to longer longitudinal dimension, and the height of the vehicle body is raised, so that the space in the vehicle or the space in a container is influenced. Meanwhile, the overlarge connection angle between the middle transmission shaft and the front and rear shafts can make power transmission extremely unstable, and the service lives of all parts are reduced. Therefore, in combination with the hybrid driving technology, there is a need to develop a chassis special for a hybrid vehicle, which adopts four-wheel drive but can eliminate an intermediate transmission shaft, and a related control method thereof.
Disclosure of Invention
The invention aims to design and develop a special chassis of an all-wheel drive hybrid electric vehicle without an intermediate transmission shaft, wherein the front wheel and the rear wheel of the vehicle are respectively driven by an engine and two driving motors, and the two driving motors are used for realizing acceleration starting and energy recovery during braking, so that the driving mileage of the vehicle is improved, and meanwhile, the effects of energy conservation and emission reduction are realized.
The invention further aims to design and develop a special chassis control method of the all-wheel drive hybrid electric vehicle without the intermediate transmission shaft, the rotation speeds of the two driving motors are determined according to the rotation speeds of the engines, the control is accurate, and the comfort experience of passengers is improved.
The technical scheme provided by the invention is as follows:
a special chassis for an all-wheel drive hybrid vehicle without an intermediate drive shaft, comprising:
a frame; and
a front transmission device which is arranged at the front end of the frame and drives the front wheels of the hybrid electric vehicle;
a rear drive axle assembly provided at a rear end of the frame, and driving rear wheels of the hybrid vehicle;
a power battery pack for powering the rear drive axle assembly;
wherein, the rear drive axle assembly includes:
the two driving motors are arranged at the lower part of the frame and are connected with the power battery pack;
the input ends of the two reducers are respectively connected with the output ends of the two driving motors in a one-to-one correspondence manner;
and one ends of the two first half shafts are respectively connected with the output ends of the two speed reducers in a one-to-one correspondence manner, and the other ends of the two first half shafts are respectively connected with the rear wheels in a one-to-one correspondence manner.
Preferably, the front transmission device includes:
an engine longitudinally disposed at an upper portion of the frame;
the driving part of the clutch is a flywheel of the engine;
the driving shaft of the speed changer is a driven shaft of the clutch;
wherein the engine, clutch and transmission are rigidly fixed as a powertrain, and the clutch and transmission are suspended and fixed to the frame by the engine;
the axle lowering box penetrates through the middle of the frame, and the input shaft of the axle lowering box is an output shaft of the transmission;
one end of the universal joint transmission device is connected with the output shaft of the axle box;
one end of the differential mechanism is connected with the other end of the universal joint transmission device;
and one end of each second half shaft is symmetrically connected with the other end of the differential mechanism, and the other end of each second half shaft is connected with the front wheel.
Preferably, the universal joint transmission device includes:
one end of the first universal joint is connected with the output shaft of the axle box;
one end of the front transmission shaft is connected with the other end of the first universal joint;
and one end of the second universal joint is connected with the other end of the front transmission shaft, and the other end of the second universal joint is connected with one end of the differential mechanism.
Preferably, the power battery pack further includes:
the battery box body is formed by connecting a plurality of battery monomers in series and in parallel, and is fixed at the upper part of the frame;
and one end of the inverter is connected with the output end of the battery box body, and the other end of the inverter is connected with the two motors.
Preferably, the method further comprises:
the electric drive axle housing is arranged outside the two drive motors, the two speed reducers and the two first half shafts;
a front suspension provided at a lower portion of the frame for connecting the front wheels and the frame;
and the rear suspension is arranged at the lower part of the frame and is used for connecting the rear frame and the electric drive axle housing.
Preferably, the method further comprises:
and the ECU is connected with the two driving motors and the engine and enables the front wheels and the rear wheels to move in a coordinated manner.
A special chassis control method of an all-wheel drive hybrid electric vehicle without an intermediate transmission shaft comprises the following steps:
when the vehicle runs straight, the engine runs normally, and the ECU controls the rotation speed of the two driving motors to be the same as the rotation speed of the engine so that the rotation speeds of the front wheels and the rear wheels are the same;
when the vehicle runs on a curve, the engine runs normally, and the ECU controls the rotation speeds of the two driving motors to meet the following conditions:
the rotation speed of a driving motor of the wheel at the outer side of the curve:
wherein n is wv The rotation speed of a driving motor of the wheel at the outer side of the curve, n f For engine speed, M c G is the weight of the vehicle, g is the gravitational acceleration, F 1 As a first safety factor, P d For the output frequency of the power battery pack, P f For engine output frequency, V d For the output voltage of the power battery, V f For the engine output voltage, θ is the front wheel bias angle,toe angle for rear wheels;
the rotation speed of a driving motor of a wheel at the inner side of a curve:
wherein n is nv The rotation speed of the driving motor of the wheel at the inner side of the curve F 2 Is a second safety factor.
Preferably, the engine speed satisfies:
wherein T is f Is the engine torque.
The beneficial effects of the invention are as follows:
(1) The special chassis of the all-wheel drive hybrid electric vehicle without the intermediate transmission shaft is beneficial to arrangement of all parts of the chassis, reduces the height of the vehicle body, reduces the angles of the front transmission shaft and the second half shaft, ensures stable power transmission and prolongs the service life of the parts; the chassis realizes four-wheel drive of the hybrid electric vehicle, not only can improve the driving performance of the vehicle, but also can improve the driving mileage of the vehicle and reduce the oil consumption; and the chassis is suitable for various frame types.
(2) According to the special chassis control method for the all-wheel drive hybrid electric vehicle without the intermediate transmission shaft, the rotation speeds of the two driving motors are precisely controlled through the ECU according to the rotation speeds of the engine, so that the vehicle runs more smoothly, the driving is simpler, and passengers feel more comfortable.
Drawings
Fig. 1 is a schematic diagram of a front view of a special chassis of an all-wheel drive hybrid vehicle without an intermediate drive shaft according to the present invention.
FIG. 2 is a schematic cross-sectional view of a rear axle assembly according to the present invention.
Fig. 3 is a schematic top sectional view of a special chassis of an all-wheel drive hybrid electric vehicle without an intermediate transmission shaft according to the present invention.
Detailed Description
The present invention is described in further detail below with reference to the drawings to enable those skilled in the art to practice the invention by referring to the description.
As shown in fig. 1, the invention provides a special chassis of an all-wheel drive hybrid electric vehicle without an intermediate transmission shaft, wherein the front wheels of the hybrid electric vehicle are driven by an engine, the rear wheels of the hybrid electric vehicle are driven by two driving motors, and the transmission of the front wheels and the rear wheels is more stable due to the absence of the intermediate transmission shaft.
As shown in fig. 1, the special chassis of the all-wheel drive hybrid vehicle without the intermediate transmission shaft includes: the vehicle frame 100, a front transmission device (not shown), a power battery pack and a rear drive axle assembly (not shown), wherein the vehicle frame 100 can be any vehicle frame type, and is not limited to a specific one, the vehicle frame 100 in the embodiment is a side beam type vehicle frame, and is formed by connecting two longitudinal beams and a plurality of transverse beams through bolts or rivets, the cross section of the longitudinal beams is in a groove shape, and the cross section of the transverse beams is I-shaped, tubular or box-shaped; the two front wheels 120 are symmetrically fixed at the bottom of the front end of the frame 100 through two front suspensions 121, the front transmission device is arranged at one end of the frame 100, and the front transmission device drives the front wheels 120 of the hybrid electric vehicle; the rear drive axle assembly is arranged at the other end of the frame 100, and drives the rear wheels 140 of the hybrid electric vehicle; the power battery pack provides power for the rear drive axle assembly.
As shown in fig. 1 and 3, the front transmission device includes: an engine 111, a clutch 112, a transmission 113, a drop shaft housing 114, a differential 115, two first half shafts 116, a front propeller shaft 117, and two universal joints 118, wherein the engine 111 provides driving force of only front wheels 120, and the engine 111 is longitudinally arranged due to the limitation of the vehicle body size and fixed to the upper portion of the vehicle frame 100 through respective support members; the flywheel of the engine 111 is the driving member of the clutch 112, the driven shaft of the clutch 112 is the driving shaft of the transmission 113, the engine 111, the clutch 112 and the transmission 113 are integrated into a power assembly and rigidly fixed together by bolts, and then suspended and fixed to the front part of the frame 100 by the engine 111. The axle lowering box 114 is positioned in the middle of the frame 100, the input shaft of the axle lowering box 114 is an output shaft of the transmission 113, the rotation speed of the transmission system is reduced by meshing an internal gear pair, the height of the front transmission shaft 117 can be reduced, the included angle between the front transmission shaft 117 and the two first half shafts 116 is reduced, the transmission is stable, the service life is prolonged, and the axle lowering box 114 is rigidly fixed on a cross beam of the frame 100 through a mounting hole on a shell of the axle lowering box 114 by bolts; the two ends of the front transmission shaft 117 are respectively connected with the output shaft of the drop axle box 114 and the input end of the differential 115 through two universal joints 118; the output end of the differential 115 is connected to one end of two first half shafts 116, respectively, and the other end of the two first half shafts 116 is connected to the front wheels 120, respectively.
As shown in fig. 1 and 2, the rear drive axle assembly includes: the electric drive axle housing 130, the first drive motor 133, the second drive motor 134, the first speed reducer 135, the second speed reducer 136, the second half axle 137 and the third half axle 138, wherein the electric drive axle housing 130 is of a hollow structure, a containing chamber and two channels communicated with the containing chamber are formed in the electric drive axle housing 130, the first speed reducer 135 and the second speed reducer 136 are symmetrically arranged on two sides of the inside of the containing chamber respectively, the input end of the first speed reducer 135 is connected with the output end of the first drive motor 133, the input end of the second speed reducer 136 is connected with the output end of the second drive motor 134, the first drive motor 133 and the second drive motor 134 independently drive the rear wheel 140, one end of the second half axle 137 is connected with the output end of the first speed reducer 135, the other end of the second half axle 138 is connected with the other rear wheel 140, and the second half axle 137 and the third half axle 138 are respectively arranged in the two channels; the first driving motor 133, the second driving motor 134, the first speed reducer 135 and the second speed reducer 136 are integrated together and fixed inside the electric drive axle housing 130, so that the transmission efficiency is improved, and the electric drive axle housing 130 is connected with the vehicle frame 100 through the rear suspension 141.
As shown in fig. 1 and 3, the power battery pack includes: the battery box 131 is formed by connecting a plurality of battery monomers in series and in parallel, so that rated voltage and rated current required to be used are achieved, mounting holes are formed in two sides of the battery box 131, and the battery box 131 is fixedly connected to a longitudinal beam on the rear side of the frame 100 through bolts; one end of the inverter 132 is connected to the output end of the battery box 131, the other end is connected to the first driving motor 133 and the second driving motor 134, and the direct current output by the power battery pack needs to be converted into alternating current by the inverter 132 and then transmitted to the first driving motor 133 and the second driving motor 134.
The working process of the invention is as follows: the engine 111 is started, power is transmitted to the transmission 113 through the clutch 112, then the power is transmitted to the axle-reducing box 114, the axle-reducing box 114 is meshed through an internal gear pair to reduce the rotation speed of a transmission system, and the power transmitted by the axle-reducing box 114 is transmitted to the differential 115 through the two universal joints 118 and the front transmission shaft 117 and then transmitted to the front wheels 120 through the two first half shafts 116; meanwhile, the direct current output by the power battery pack needs to be converted into alternating current through the inverter 132 and then transmitted to the first driving motor 133 and the second driving motor 134, the driving force transmitted by the first driving motor 133 and the second driving motor 134 is respectively transmitted to the rear wheels 140 after the rotation speed is reduced through the first speed reducer 135 and the second speed reducer 136, the electric drive axle does not need a differential mechanism, the rotation speed of the first driving motor 133 and the second driving motor 134 is directly controlled through the ECU of the automobile, and the steering of the automobile is assisted by utilizing the differential mechanism.
The special chassis of the all-wheel drive hybrid electric vehicle without the intermediate transmission shaft is driven by the engine when the front drive axle is driven by the drive motor, the rear drive axle is a novel hybrid power configuration, the motor in the rear drive axle can be used for realizing acceleration starting, and energy recovery during braking.
The invention also provides a control method of the special chassis of the all-wheel drive hybrid electric vehicle without the intermediate transmission shaft, which comprises the following steps:
when the vehicle runs straight, the engine runs normally, and the ECU controls the rotation speeds of the two driving motors to be the same as the rotation speed of the engine;
when the vehicle runs on a curve, the engine runs normally, and the ECU controls the rotation speeds of the two driving motors to meet the following conditions:
the rotation speed of a driving motor of the wheel at the outer side of the curve:
wherein n is wv The rotation speed of a driving motor of the wheel at the outer side of the curve, n f For engine speed, M c G is the weight of the vehicle, g is the gravitational acceleration, F 1 As a first safety factor, P d For the output frequency of the power battery pack, P f For engine output frequency, V d For the output voltage of the power battery, V f For the engine output voltage, θ is the front wheel bias angle,toe angle for rear wheels;
the rotation speed of a driving motor of a wheel at the inner side of a curve:
wherein n is nv The rotation speed of the driving motor of the wheel at the inner side of the curve F 2 Is a second safety factor.
Wherein the engine speed satisfies:
wherein T is f Is the engine torque.
According to the special chassis control method for the all-wheel drive hybrid electric vehicle without the intermediate transmission shaft, the rotation speeds of the two driving motors are precisely controlled through the ECU according to the rotation speeds of the engine, so that the vehicle runs more smoothly, the driving is simpler, and passengers feel more comfortable.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the invention would be readily apparent to those skilled in the art, and accordingly, the invention is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (7)
1. A special chassis control method of an all-wheel drive hybrid vehicle without an intermediate drive shaft, using a special chassis of an all-wheel drive hybrid vehicle without an intermediate drive shaft, comprising:
when the vehicle runs straight, the engine runs normally, and the ECU controls the rotation speed of the two driving motors to be the same as the rotation speed of the engine so that the rotation speeds of the front wheels and the rear wheels are the same;
when the vehicle runs on a curve, the engine runs normally, and the ECU controls the rotation speeds of the two driving motors to meet the following conditions:
the rotation speed of a driving motor of the wheel at the outer side of the curve:
wherein n is wv The rotation speed of a driving motor of the wheel at the outer side of the curve, n f For engine speed, M c G is the weight of the vehicle, g is the gravitational acceleration, F 1 As a first safety factor, P d For the output frequency of the power battery pack, P f For engine output frequency, V d For the output voltage of the power battery, V f For the engine output voltage, θ is the front wheel bias angle,toe angle for rear wheels;
the rotation speed of a driving motor of a wheel at the inner side of a curve:
wherein n is nv The rotation speed of the driving motor of the wheel at the inner side of the curve F 2 Is a second safety factor;
the special chassis of the all-wheel drive hybrid electric vehicle without the intermediate transmission shaft comprises:
a frame; and
a front transmission device which is arranged at the front end of the frame and drives the front wheels of the hybrid electric vehicle;
a rear drive axle assembly provided at a rear end of the frame, and driving rear wheels of the hybrid vehicle;
a power battery pack for powering the rear drive axle assembly;
wherein, the rear drive axle assembly includes:
the two driving motors are arranged at the lower part of the frame and are connected with the power battery pack;
the input ends of the two reducers are respectively connected with the output ends of the two driving motors in a one-to-one correspondence manner;
and one ends of the two first half shafts are respectively connected with the output ends of the two speed reducers in a one-to-one correspondence manner, and the other ends of the two first half shafts are respectively connected with the rear wheels in a one-to-one correspondence manner.
2. The special chassis control method of an all-wheel drive hybrid vehicle without an intermediate drive shaft according to claim 1, the front transmission device comprising:
an engine longitudinally disposed at an upper portion of the frame;
the driving part of the clutch is a flywheel of the engine;
the driving shaft of the speed changer is a driven shaft of the clutch;
wherein the engine, clutch and transmission are rigidly fixed as a powertrain, and the clutch and transmission are suspended and fixed to the frame by the engine;
the axle lowering box penetrates through the middle of the frame, and the input shaft of the axle lowering box is an output shaft of the transmission;
one end of the universal joint transmission device is connected with the output shaft of the axle box;
one end of the differential mechanism is connected with the other end of the universal joint transmission device;
and one end of each second half shaft is symmetrically connected with the other end of the differential mechanism, and the other end of each second half shaft is connected with the front wheel.
3. The special chassis control method of an all-wheel drive hybrid vehicle without an intermediate drive shaft according to claim 2, wherein the universal joint transmission includes:
one end of the first universal joint is connected with the output shaft of the axle box;
one end of the front transmission shaft is connected with the other end of the first universal joint;
and one end of the second universal joint is connected with the other end of the front transmission shaft, and the other end of the second universal joint is connected with one end of the differential mechanism.
4. The special chassis control method for an all-wheel drive hybrid vehicle without an intermediate drive shaft according to claim 3, wherein the power battery pack further comprises:
the battery box body is formed by connecting a plurality of battery monomers in series and in parallel, and is fixed at the upper part of the frame;
and one end of the inverter is connected with the output end of the battery box body, and the other end of the inverter is connected with the two driving motors.
5. The method for controlling a dedicated chassis of an all-wheel drive hybrid vehicle without an intermediate drive shaft according to claim 4, wherein the dedicated chassis of an all-wheel drive hybrid vehicle without an intermediate drive shaft further comprises:
the electric drive axle housing is arranged outside the two drive motors, the two speed reducers and the two first half shafts;
a front suspension provided at a lower portion of the frame for connecting the front wheels and the frame;
and the rear suspension is arranged at the lower part of the frame and is used for connecting the frame and the electric drive axle housing.
6. The method for controlling a dedicated chassis of an all-wheel drive hybrid vehicle without an intermediate drive shaft according to claim 5, wherein the dedicated chassis of an all-wheel drive hybrid vehicle without an intermediate drive shaft further comprises:
and the ECU is connected with the two driving motors and the engine and enables the front wheels and the rear wheels to move in a coordinated manner.
7. The special chassis control method for an all-wheel drive hybrid vehicle without an intermediate drive shaft according to claim 1, wherein the engine speed satisfies:
wherein T is f Is the engine torque.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010041763.6A CN111098924B (en) | 2020-01-15 | 2020-01-15 | Special chassis of all-wheel drive hybrid electric vehicle without intermediate transmission shaft and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010041763.6A CN111098924B (en) | 2020-01-15 | 2020-01-15 | Special chassis of all-wheel drive hybrid electric vehicle without intermediate transmission shaft and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111098924A CN111098924A (en) | 2020-05-05 |
| CN111098924B true CN111098924B (en) | 2023-08-04 |
Family
ID=70426199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010041763.6A Active CN111098924B (en) | 2020-01-15 | 2020-01-15 | Special chassis of all-wheel drive hybrid electric vehicle without intermediate transmission shaft and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111098924B (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2008854A1 (en) * | 2007-06-27 | 2008-12-31 | Bayerische Motoren Werke Aktiengesellschaft | Hybrid car, in particular hybrid car with front wheel drive |
| CN101445047A (en) * | 2008-12-19 | 2009-06-03 | 海博瑞德（北京）汽车技术有限公司 | Driving system of all wheel drive hybrid powered vehicle |
| CN201900980U (en) * | 2010-11-10 | 2011-07-20 | 胡枝清 | Novel electric sports car with front powder driver and rear power driver |
| CN203819018U (en) * | 2014-04-29 | 2014-09-10 | 福州大学 | Hardware structure of driving system of plug-in multi-mode hybrid car |
| CN104590269A (en) * | 2014-12-14 | 2015-05-06 | 励春亚 | Hybrid power vehicle SOC preserved energy management method |
| CN105946970A (en) * | 2016-03-27 | 2016-09-21 | 林洪立 | Intelligent steering angle driving unit of electric car |
| CN107825955A (en) * | 2017-10-18 | 2018-03-23 | 武汉理工大学 | A kind of distributed Two axle drive hybrid power system and its driving method |
| CN108284737A (en) * | 2018-01-25 | 2018-07-17 | 吉林大学 | A kind of hydraulic hybrid power system for road sweeper |
| CN108482103A (en) * | 2018-03-07 | 2018-09-04 | 武汉理工大学 | A kind of Two axle drive hybrid power system and driving method |
| CN109080627A (en) * | 2018-06-05 | 2018-12-25 | 东南大学 | A kind of lateral force control method when automatic driving vehicle turning driving |
| CN208602320U (en) * | 2018-05-18 | 2019-03-15 | 长沙桑铼特农业机械设备有限公司 | A kind of tractor transmission system and 4 wheel driven type tractor |
| CN109878319A (en) * | 2019-03-06 | 2019-06-14 | 吉林大学 | The plug-in series-parallel four-wheel-drive hybrid power system of one kind and control method |
| CN110287526A (en) * | 2019-05-20 | 2019-09-27 | 北京理工大学 | Hybrid vehicle model building method |
| CN211468576U (en) * | 2020-01-15 | 2020-09-11 | 吉林大学 | Special chassis of all-wheel drive hybrid electric vehicle without intermediate transmission shaft |
-
2020
- 2020-01-15 CN CN202010041763.6A patent/CN111098924B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2008854A1 (en) * | 2007-06-27 | 2008-12-31 | Bayerische Motoren Werke Aktiengesellschaft | Hybrid car, in particular hybrid car with front wheel drive |
| CN101445047A (en) * | 2008-12-19 | 2009-06-03 | 海博瑞德（北京）汽车技术有限公司 | Driving system of all wheel drive hybrid powered vehicle |
| CN201900980U (en) * | 2010-11-10 | 2011-07-20 | 胡枝清 | Novel electric sports car with front powder driver and rear power driver |
| CN203819018U (en) * | 2014-04-29 | 2014-09-10 | 福州大学 | Hardware structure of driving system of plug-in multi-mode hybrid car |
| CN104590269A (en) * | 2014-12-14 | 2015-05-06 | 励春亚 | Hybrid power vehicle SOC preserved energy management method |
| CN105946970A (en) * | 2016-03-27 | 2016-09-21 | 林洪立 | Intelligent steering angle driving unit of electric car |
| CN107825955A (en) * | 2017-10-18 | 2018-03-23 | 武汉理工大学 | A kind of distributed Two axle drive hybrid power system and its driving method |
| CN108284737A (en) * | 2018-01-25 | 2018-07-17 | 吉林大学 | A kind of hydraulic hybrid power system for road sweeper |
| CN108482103A (en) * | 2018-03-07 | 2018-09-04 | 武汉理工大学 | A kind of Two axle drive hybrid power system and driving method |
| CN208602320U (en) * | 2018-05-18 | 2019-03-15 | 长沙桑铼特农业机械设备有限公司 | A kind of tractor transmission system and 4 wheel driven type tractor |
| CN109080627A (en) * | 2018-06-05 | 2018-12-25 | 东南大学 | A kind of lateral force control method when automatic driving vehicle turning driving |
| CN109878319A (en) * | 2019-03-06 | 2019-06-14 | 吉林大学 | The plug-in series-parallel four-wheel-drive hybrid power system of one kind and control method |
| CN110287526A (en) * | 2019-05-20 | 2019-09-27 | 北京理工大学 | Hybrid vehicle model building method |
| CN211468576U (en) * | 2020-01-15 | 2020-09-11 | 吉林大学 | Special chassis of all-wheel drive hybrid electric vehicle without intermediate transmission shaft |
Non-Patent Citations (1)
| Title |
|---|
| 电动轮汽车驱动助力转向与稳定性协调控制;靳立强 等;机械工程学报;第54卷(第16期);第160-169页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111098924A (en) | 2020-05-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10752300B2 (en) | Motor gearbox assembly | |
| US10071627B2 (en) | Integrated steering drive axle for vehicle and electric vehicle | |
| AU2016263240A1 (en) | Mid-engined extended range electric vehicle | |
| CN111169225A (en) | Integrated double-motor distributed drive electric drive axle | |
| US20210039492A1 (en) | An electric axle assembly | |
| CN105480078B (en) | A kind of hybrid power offroad vehicle assembly panelized arrangement | |
| CN211468576U (en) | Special chassis of all-wheel drive hybrid electric vehicle without intermediate transmission shaft | |
| CN206633739U (en) | A kind of amphibious vehicle hybrid power system arrangement using bridge motor | |
| CN111098924B (en) | Special chassis of all-wheel drive hybrid electric vehicle without intermediate transmission shaft and control method thereof | |
| CN213973547U (en) | Electric power train and electric vehicle using the same | |
| CN101890908B (en) | Drive axle for electric vehicle or hybrid electric vehicle | |
| CN102310754A (en) | Transmission system and chassis | |
| CN211764707U (en) | Integrated double-motor distributed drive electric drive axle | |
| CN217415462U (en) | Novel multimode is indulged and is put rear-guard power unit | |
| CN217347479U (en) | Hybrid power transmission with compact structure | |
| CN218750255U (en) | Heavy integrated variable speed electric drive axle and vehicle | |
| CN218054841U (en) | Hybrid power chassis power system | |
| CN114454664A (en) | Heavy variable-speed integrated electric drive bridge | |
| CN114734755A (en) | Electric drive bridge system and pure electric motion industry vehicle using same | |
| CN103770626A (en) | Four-wheel drive chassis structure for hybrid electric vehicle | |
| Petr | Proposal to Improve Powertrain Efficiency by Using a Multi-Stage Gearbox | |
| CN116674363A (en) | Electric drive system of heavy-duty vehicle for wide mining | |
| CN115583141A (en) | Heavy integrated variable speed electric drive axle and vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |