CN116394739A - Range-extending hybrid system for longitudinal rear-drive vehicle - Google Patents

Range-extending hybrid system for longitudinal rear-drive vehicle Download PDF

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Publication number
CN116394739A
CN116394739A CN202310568031.6A CN202310568031A CN116394739A CN 116394739 A CN116394739 A CN 116394739A CN 202310568031 A CN202310568031 A CN 202310568031A CN 116394739 A CN116394739 A CN 116394739A
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China
Prior art keywords
power
generator
motor controller
distribution box
hybrid system
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Pending
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CN202310568031.6A
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Chinese (zh)
Inventor
康海波
刘双双
秦政委
张志杰
李海亮
朱波
李秋实
罗世成
姚学森
杜加云
杨栋
左炜晨
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Anhui Jianghuai Automobile Group Corp
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Anhui Jianghuai Automobile Group Corp
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Priority to CN202310568031.6A priority Critical patent/CN116394739A/en
Publication of CN116394739A publication Critical patent/CN116394739A/en
Pending legal-status Critical Current

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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
    • 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
    • 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
    • B60K6/54—Transmission for changing ratio
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Hybrid Electric Vehicles (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention discloses a range-extending hybrid system for a longitudinal rear-drive vehicle, which provides a longitudinal rear-drive range-extending hybrid power route configuration scheme, and comprises a range extender composed of an engine and a generator, a coaxial electric drive rear axle, a power distribution box, a motor controller and other parts, wherein the generator is directly connected with the generator in a coaxial way, the generator and the engine form power coupling, and the generated electric energy of the generator can be transmitted to the coaxial electric drive axle through the motor controller; the power distribution box is respectively connected with the power battery and the motor controller; the coaxial electric drive axle comprises a motor and a differential mechanism, and the motor and the differential mechanism are coaxially arranged; the invention optimizes the complexity of a general hybrid system through reasonable system design and layout, reduces the number of parts, weight and occupied space, greatly reduces the comprehensive cost and can meet the arrangement requirements of the longitudinal rear-drive vehicles with power-on and non-power-on range-increasing hybrid operation.

Description

Range-extending hybrid system for longitudinal rear-drive vehicle
Technical Field
The invention relates to the field of hybrid automobiles, in particular to a range-extending hybrid system for a longitudinal rear-drive vehicle.
Background
The existing new energy range-extending automobiles are mostly seen in sedans and SUV (SUV) models, the power is mostly arranged horizontally, a front horizontal engine is connected with a range extender, and the range extender can synchronously integrate a driving motor and is arranged into a precursor system; or a driving motor is arranged on the rear wheel, and a rear drive or four-drive system is formed by the rear wheel and the front range extender. The longitudinal vehicle type is mostly a hybrid transmission system at present, and the hybrid transmission is integrated with a generator, a driving motor and a gear shaft system, has modes of series connection, parallel connection, direct engine driving and the like, and does not belong to a range-extending power route. The rear part of the hybrid transmission is generally matched with a driving axle of the fuel vehicle, and the hybrid transmission is connected to the driving axle through a transmission shaft, so that the rear-drive output power function is realized.
In particular, the conventional transverse hybrid or transverse range-increasing or longitudinal integrated hybrid transmission is mostly a P13 hybrid route, has a complex structure, large volume of parts, is inconvenient for the arrangement of a longitudinal rear-drive vehicle, and has extremely high implementation cost. Especially for the longitudinal hybrid vehicle type, the engine is matched with the hybrid transmission, and the power is output to the traditional rear drive axle through the transmission shaft, so that the hybrid transmission has the advantages of realizing multiple working modes of power generation, serial connection, parallel connection, direct driving of the engine and the like; the device has the defects that the structure is complex, the calibration control logic among the modes is complex, if the matching and the calibration are imperfect, the problems of pause and the like are easy to occur, and meanwhile, the problems of difficult expansion and arrangement of related parts of a transmission shaft, a chassis battery, an oil tank and the like exist.
Disclosure of Invention
In view of the foregoing, the present invention is directed to an extended range hybrid system for a longitudinal rear-drive vehicle, so as to solve the above-mentioned technical problems.
The technical scheme adopted by the invention is as follows:
the invention provides an extended range hybrid system for a longitudinal rear-drive vehicle, which comprises:
the device comprises an engine, a generator, a motor controller, a power distribution box, a power battery and a coaxial electric drive axle;
the engine is directly connected with the generator in a coaxial way, the generator and the engine form power coupling, and electric energy generated by the generator is transmitted to the coaxial electric drive axle through the motor controller;
the motor controller is connected with the integrated power distribution box, and the power distribution box is connected with the power battery;
the coaxial electric drive axle includes an electric motor and a differential, and the electric motor is arranged coaxially with the differential.
In at least one possible implementation manner, when the electric quantity of the power battery is sufficient and the whole vehicle enters the instantaneous high-power demand working condition, the electric energy generated by the generator and the electric energy of the power battery are jointly adapted to the current whole vehicle power demand.
In at least one possible implementation, the motor rotor shaft in the coaxial electric drive axle is arranged coaxially with the differential shaft, the half shaft.
In at least one possible implementation manner, the power distribution box is connected with a plurality of high-voltage electric appliances and is used for configuring a high-voltage power supply for the high-voltage electric appliances.
In at least one possible implementation manner, in a plug-in hybrid vehicle type, the power distribution box is connected with an external charging interface for quick charging or slow charging.
In at least one possible implementation, the output shaft of the engine is directly connected coaxially with the input shaft of the generator through a damper.
In at least one possible implementation manner, the motor controller is connected with the power distribution box through a direct current bus, and the power distribution box is connected with the power battery through a direct current bus.
In at least one possible implementation manner, the generator is connected with the motor controller through a three-phase high-voltage line, and the motor controller controls the coaxial electric drive axle to work through the three-phase high-voltage line.
In at least one possible implementation, the motor controller employs a dual motor controller.
Compared with the prior art, the invention has the main design concept that a longitudinal rear-drive range-increasing hybrid power route configuration scheme is provided, the range extender comprises an engine and a generator, and the components such as a coaxial electric drive rear axle, a power distribution box, a motor controller and the like, the invention has the characteristics of simple structure, small arrangement space, light weight and low cost, and can directly apply an electric drive axle without greatly changing a rear suspension of an original fuel vehicle, in particular, the engine and the generator are coaxially and directly connected, the generator and the engine form power coupling, and the electric energy generated by the generator can be transmitted to the coaxial electric drive axle through the motor controller; the power distribution box is respectively connected with the power battery and the motor controller; the coaxial electric drive axle comprises a motor and a differential mechanism, and the motor and the differential mechanism are coaxially arranged; in addition, in some embodiments, a dual-motor control system is adopted, the integration level is high, and the power distribution box can integrate various interfaces and functions, so that rich function expansion is realized. The invention optimizes the complexity of a general hybrid system through reasonable system design and layout, reduces the number of parts, weight and occupied space, greatly reduces the comprehensive cost and can meet the arrangement requirements of the longitudinal rear-drive vehicles with power-on and non-power-on range-increasing hybrid operation.
Drawings
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described with reference to the accompanying drawings, in which:
FIG. 1 is a schematic layout diagram of an extended range hybrid system (non-plug-in extended range hybrid route) for a tandem rear-drive vehicle according to an embodiment of the present invention;
fig. 2 is a schematic layout diagram (plug-in type range-extending hybrid route) of a range-extending hybrid system for a longitudinal rear-drive vehicle according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
The present invention proposes an embodiment of an extended range hybrid system for a longitudinal rear-drive vehicle, in particular as shown in fig. 1 and 2, comprising: an engine 1, a generator 2, a motor controller 3, a power distribution box 4, a power battery 5 and a coaxial electric drive axle 6.
Wherein, the engine 1 and the generator 2 are coaxially and directly connected, no gear ratio exists between the two, and the engine is started
WPE230724 3
The rotation speed of the engine 1 is the same as that of the generator 2, and the vehicle can be started directly through the generator 2 without the need of an original traditional starter. Because the engine 1 is not directly connected with the driving system, the engine 1 and the generator 2 can be controlled to work at fixed high-efficiency working points according to the power generation power requirement of the whole vehicle, thereby improving the power generation efficiency of the system and reducing the oil consumption. Specifically, the crankshaft of the engine 1 is directly connected with the input shaft of the generator 2 coaxially through the torsional vibration damper, and the input shaft of the generator 2 and the generator rotor 2b (the generator stator 2a is also shown in the figure) are the same shaft, so that the generator and the engine form power coupling, the traditional low-voltage starter of the original engine is canceled, and the engine is directly dragged by the generator to realize a starting function; when power generation is needed, the engine directly drives the generator rotor to rotate to achieve a power generation function, and in actual operation, the engine and the generator are enabled to work in a high-efficiency area through selecting proper rotation speed, so that power generation is achieved, and the power requirement of the whole vehicle is met.
The motor controller 3 adopts a double-motor controller, and the electric energy generated by the generator 2 is distributed to a driving motor control module through the motor controller and is transmitted to the coaxial electric drive axle 6 to realize the driving running of the vehicle. Specifically, the generator 2 is connected with the motor controller 3 through three-phase high-voltage wires, and the generated electric energy directly passes through the motor controller 3 to control the coaxial electric drive axle 6 to work through the three-phase high-voltage wires, so that the vehicle is driven to run.
The motor controller 3 is connected with the integrated power distribution box 4, the power distribution box 4 is connected with the power battery 5, when the electric quantity of the power battery is low, the power generation power of the generator 2 is increased by increasing the rotating speed of the engine 1, and redundant electricity is charged into the power battery 5 through the motor controller 3 and the power distribution box 4 to supplement the electric quantity. When the whole vehicle is in the working condition of larger power requirements such as climbing or accelerating, if the generated power is insufficient, the power battery 5 provides redundant electric quantity, and the power distribution box 4 supplies the power to the coaxial electric drive axle 6 through the driving motor module of the motor controller 3 to drive the vehicle to run. In actual operation, the motor controller 3 is connected with the power distribution box 4 through a direct current bus, and the power distribution box 4 is connected with the power battery 5 through a direct current bus, so that charging and discharging of the power battery can be realized. When the electric quantity of the power battery 5 is low, the rotation speed of the engine 1 and the rotation speed of the generator 2 are increased, the generated power is increased, and the redundant electric quantity enters the power distribution box 4 through the motor controller 3 to be charged into the power battery 5 while the driving power requirement of the whole vehicle is met. When the electric quantity of the power battery is sufficient and the whole vehicle enters into the working conditions of instantaneous high power demands such as acceleration, climbing and the like, the electric quantity emitted by the generator 2 is insufficient to meet the demands of the whole vehicle, at the moment, the redundant electric quantity of the power battery 5 enters into the motor controller 3 through the power distribution box 4 and then enters into the coaxial electric drive axle 6, and the energy provided by the two electric drive axles jointly meet the power demands of the whole vehicle.
The coaxial electric drive axle 6 comprises a motor and a differential mechanism, the common electric drive axle is mainly arranged by two parallel shafts, the motor is biased and is connected with the differential mechanism and a half shaft through a pair of gears, and the motor is biased, so that the arrangement space at the rear wheel is occupied, and the arrangement of other parts is not facilitated. The coaxial electric drive axle provided by the invention saves the space occupation of the chassis because the motor and the differential mechanism are coaxially arranged, and is convenient for arranging other parts of the whole vehicle. Specifically, the motor rotor shaft in the coaxial electric drive axle 6 is arranged coaxially with the differential shaft and the half shaft, namely, the drive axle stator 6a and the drive axle rotor 6b are coaxial with the half shaft, the middle of the drive axle rotor 6b is a hollow shaft, and the middle of the drive axle rotor 6b is the half shaft. Compared with a common conventional motor-biased electric drive rear axle, the structure is more compact, the size is small, and the whole vehicle arrangement is facilitated.
On the basis of the above embodiment, the power distribution box 4 may preferably further extend the following three functions: first, integrate the high-voltage distribution function, mix the motor vehicle type and generally equip high-voltage electrical apparatus 7 such as high-voltage electric compressor, high-voltage PTC, etc., the power supply distribution box can connect the said high-voltage electrical apparatus 7, provide the high-voltage power supply and distribute in order to meet the needs of such high-voltage components. And secondly, the high-voltage power supply has a DCDC function, and can output 12V of low-voltage power to meet the power consumption requirement of a low-voltage storage battery of the whole vehicle. Thirdly, the charging function is achieved, and when the vehicle is developed into a non-plug-in hybrid vehicle type, an external charging interface is not required to be configured; and when the whole vehicle is of a plug-in hybrid vehicle type, the power distribution box 4 is connected with an external charging interface for quick charging or slow charging.
In addition, the power battery 5 can select battery types with different electric quantities according to the plug-in or plug-out type, and the arrangement position of the battery types is not strictly limited.
In summary, the main design concept of the invention is to provide a longitudinal rear-drive range-extending hybrid power line configuration scheme, which comprises a range extender composed of an engine and a generator, a coaxial electric drive rear axle, a power distribution box, a motor controller and other parts, and has the characteristics of simple structure, small arrangement space, light weight and low cost, and the invention can directly apply an electric drive axle without greatly changing the rear suspension of the original fuel vehicle, in particular, the engine and the generator are coaxially and directly connected, the generator and the engine form power coupling, and the electric energy generated by the generator can be transmitted to the coaxial electric drive axle through the motor controller; the power distribution box is respectively connected with the power battery and the motor controller; the coaxial electric drive axle comprises a motor and a differential mechanism, and the motor and the differential mechanism are coaxially arranged; in addition, in some embodiments, a dual-motor control system is adopted, the integration level is high, and the power distribution box can integrate various interfaces and functions, so that rich function expansion is realized. The invention optimizes the complexity of a general hybrid system through reasonable system design and layout, reduces the number of parts, weight and occupied space, greatly reduces the comprehensive cost and can meet the arrangement requirements of the longitudinal rear-drive vehicles with power-on and non-power-on range-increasing hybrid operation.
In the embodiments of the present invention, "at least one" means one or more, and "a plurality" means two or more. "and/or", describes an association relation of association objects, and indicates that there may be three kinds of relations, for example, a and/or B, and may indicate that a alone exists, a and B together, and B alone exists. Wherein A, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of the following" and the like means any combination of these items, including any combination of single or plural items. For example, at least one of a, b and c may represent: a, b, c, a and b, a and c, b and c or a and b and c, wherein a, b and c can be single or multiple.
The construction, features and effects of the present invention are described in detail according to the embodiments shown in the drawings, but the above is only a preferred embodiment of the present invention, and it should be understood that the technical features of the above embodiment and the preferred mode thereof can be reasonably combined and matched into various equivalent schemes by those skilled in the art without departing from or changing the design concept and technical effects of the present invention; therefore, the invention is not limited to the embodiments shown in the drawings, but is intended to be within the scope of the invention as long as changes made in the concept of the invention or modifications to the equivalent embodiments do not depart from the spirit of the invention as covered by the specification and drawings.

Claims (9)

1. An extended range hybrid system for a longitudinally-positioned rear-drive vehicle, comprising: the device comprises an engine, a generator, a motor controller, a power distribution box, a power battery and a coaxial electric drive axle;
the engine is directly connected with the generator in a coaxial way, the generator and the engine form power coupling, and electric energy generated by the generator is transmitted to the coaxial electric drive axle through the motor controller;
the motor controller is connected with the integrated power distribution box, and the power distribution box is connected with the power battery;
the coaxial electric drive axle includes an electric motor and a differential, and the electric motor is arranged coaxially with the differential.
2. The range-extending hybrid system for a longitudinally-arranged rear-drive vehicle of claim 1, wherein when the power battery is sufficiently charged and the vehicle enters an instantaneous high-power demand condition, the electric energy generated by the generator and the electric energy of the power battery are jointly adapted to the current vehicle power demand.
3. The range-extending hybrid system for a longitudinal rear drive vehicle of claim 1, wherein the motor rotor shaft in the coaxial electric drive axle is coaxially disposed with the differential shaft and the axle half shaft.
4. The extended range hybrid system for a longitudinal rear drive vehicle according to claim 1, wherein the power distribution box is connected to a plurality of high-voltage electric appliances for configuring a high-voltage power supply to the high-voltage electric appliances.
5. The range-extending hybrid system for a longitudinal rear-drive vehicle according to claim 1, wherein the power distribution box is connected with an external charging interface for quick charging or slow charging in a plug-in hybrid vehicle type.
6. The extended range hybrid system for a longitudinal rear drive vehicle of claim 1, wherein the output shaft of the engine is directly connected coaxially with the input shaft of the generator through a torsional vibration damper.
7. The extended range hybrid system for a tandem rear drive vehicle of claim 1 wherein said motor controller is connected to said power distribution box by a dc bus, said power distribution box being connected to said power cell by a dc bus.
8. The extended range hybrid system for a longitudinal rear drive vehicle of claim 1, wherein the generator is connected to the motor controller via three-phase high voltage lines, the motor controller controlling the operation of the coaxial electric drive axle via three-phase high voltage lines.
9. The range-enhancing hybrid system for a longitudinally-arranged rear-drive vehicle of any one of claims 1-8, wherein the motor controller employs a dual motor controller.
CN202310568031.6A 2023-05-19 2023-05-19 Range-extending hybrid system for longitudinal rear-drive vehicle Pending CN116394739A (en)

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Application Number Priority Date Filing Date Title
CN202310568031.6A CN116394739A (en) 2023-05-19 2023-05-19 Range-extending hybrid system for longitudinal rear-drive vehicle

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Application Number Priority Date Filing Date Title
CN202310568031.6A CN116394739A (en) 2023-05-19 2023-05-19 Range-extending hybrid system for longitudinal rear-drive vehicle

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