CN112319205A - Dual-motor automatic gear range-increasing hybrid drive system and automobile using same - Google Patents
Dual-motor automatic gear range-increasing hybrid drive system and automobile using same Download PDFInfo
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- CN112319205A CN112319205A CN202011347327.8A CN202011347327A CN112319205A CN 112319205 A CN112319205 A CN 112319205A CN 202011347327 A CN202011347327 A CN 202011347327A CN 112319205 A CN112319205 A CN 112319205A
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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
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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
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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
- B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
- B60K6/54—Transmission for changing ratio
- B60K6/547—Transmission for changing ratio the transmission being a stepped gearing
Abstract
The application belongs to the technical field of vehicle hybrid power systems, and particularly relates to a double-motor automatic gear range-increasing hybrid drive system and an automobile using the same, wherein the double-motor automatic gear range-increasing hybrid drive system comprises an engine, a generator and a motor, an output shaft of the engine is connected with one end of a power generation main shaft, the other end of the power generation main shaft is arranged in the power generation main shaft in a penetrating manner, the engine, the generator and the power generation main shaft are coaxially arranged, the power generation main shaft and the power generation main shaft are respectively in rotating connection with an electric coupling; the electric coupling gearbox comprises a gear actuating mechanism, a mode switching mechanism and a gearbox intermediate shaft connected with the gear actuating mechanism and the mode switching mechanism; the gear executing mechanism realizes the connection or disconnection of the electric main shaft and the power output shaft; the mode switching mechanism realizes connection or disconnection of the power generation main shaft and the power output shaft. The application realizes multiple driving modes; the driving energy consumption of a pure motor at high speed is reduced, and the power following performance and the climbing performance are improved; matching engine and generator speed ratios; the system has compact and reliable structure and high power transmission efficiency.
Description
Technical Field
The application belongs to the technical field of vehicle hybrid power systems, and particularly relates to a double-motor automatic gear range-extending type hybrid driving system and an automobile using the same.
Background
The electric automobile as a new energy vehicle has the characteristics of low noise, high energy utilization efficiency, no mobile waste emission and the like. Energy supply is an important link in the industry chain of electric automobiles, and the energy supply mode is closely related to the development of the electric automobiles. The range extending electric automobile is characterized in that the range extender automatically starts and continuously provides electric energy for the vehicle-mounted battery when the electric quantity of the vehicle-mounted battery is low. The battery capacity of the range-extended electric automobile only needs about 40% of that of a pure electric automobile, and the range-extended electric automobile is directly driven by the motor without a clutch and a gearbox and has a simple structure.
For example, as shown in fig. 1, a generator, a motor and a battery are electrically connected, and a battery pack can provide electric energy to the motor, and the electric energy is transmitted to a main speed reducer by the motor to drive wheels of the range-extended electric vehicle to move forward. The engine and the generator are connected through a transmission device. When the electric quantity of the battery pack is exhausted quickly, the engine provides mechanical energy for the generator, the generator keeps the best torque to operate and outputs electric energy with fixed power, the generator provides electric energy for the motor, and the motor is transmitted to the main speed reducer to drive wheels of the range-extended electric automobile to move forwards. The engine here is used only to drive the generator rotor to provide electrical power to the battery. The pure electric machine driving of the automobile at high speed has the problems of high power consumption, insufficient power following performance, low speed, difficult climbing, insufficient power and the like; at present, a hybrid range-extending power system mostly adopts a planetary gear mechanism, and the process is complex; the engine and the generator are not matched in speed ratio and only output in single speed ratio, so that the requirements of more working conditions of the automobile are difficult to adapt, and the power and the efficiency cannot be brought into the best state; when the layout of the motor and the generator is not reasonable, the occupied space of the power system is too large.
Disclosure of Invention
In order to reduce the energy consumption of pure motor driving when the automobile is at a high speed, the power following performance is increased, and the climbing performance of the automobile is enhanced; matching engine and generator speed ratios; the motor and the generator are reasonably arranged, and the occupied space is reduced. The application provides a dual-motor automatic gear range-increasing hybrid drive system.
In a first aspect, the application provides a dual-motor automatic gear range-extending hybrid drive system, which is implemented by adopting the following technical scheme.
The double-motor automatic gear range-extending hybrid driving system comprises an engine, a generator and a motor, wherein an output shaft of the engine is connected with one end of a power generation main shaft through a power generation gear box, the other end of the power generation main shaft penetrates through the electric main shaft and is coaxially arranged, the power generation main shaft and the electric main shaft are respectively and rotatably connected with an electric coupling gearbox, and the electric coupling gearbox is used for being connected with a power output shaft;
at least two gears for transmitting power to each other are arranged in the power generation gear box, the output shaft of the engine is connected with one gear in the power generation gear box, and the other gear in the power generation gear box is connected with the power generation main shaft.
The electric coupling gearbox comprises a gear executing mechanism, a mode switching mechanism and a gearbox intermediate shaft connected with the gear executing mechanism and the mode switching mechanism;
the gear executing mechanism realizes connection or disconnection of the electric main shaft and the power output shaft;
the mode switching mechanism realizes connection or disconnection of the power generation main shaft and the power output shaft;
the gear executing mechanism comprises at least one electric movable gear sleeve connected with the electric main shaft and at least two gears which are matched with the electric movable gear sleeve and transmit power to the power output shaft
The mode switching mechanism comprises at least one power generation movable gear sleeve connected with a power generation main shaft and at least one pair of gear sets matched with the power generation movable gear sleeve and used for transmitting power to a power output shaft.
By adopting the technical scheme, various modes such as pure electric drive, pure oil drive, hybrid power generation and hybrid drive, idling power generation and brake quality recovery are realized, and the power generation gear box plays a role in power conversion between the engine and the power generation assembly.
Preferably, the gear actuating mechanism comprises an electric movable gear sleeve connected with the electric main shaft, a pair of externally meshed gear low-speed gears and a pair of externally meshed gear high-speed gears;
wherein:
one gear low-speed gear is a driving gear low-speed gear which can be matched with the electric movable gear sleeve, and the other gear low-speed gear is a driven gear low-speed gear which is connected with the middle shaft of the gearbox;
one gear high-speed gear is a driving gear high-speed gear and can be matched with the electric movable gear sleeve, and the other gear high-speed gear is a driven gear high-speed gear and is connected with the intermediate shaft of the gearbox.
Through adopting above-mentioned technical scheme, can realize that electronic main shaft is connected with power take off shaft with two fender position respectively.
Preferably, the mode switching mechanism comprises a power generation movable gear sleeve connected with the power generation main shaft, a pair of externally meshed mode low-speed gears and a pair of externally meshed mode high-speed gears;
wherein:
one mode low-speed gear is a driving mode low-speed gear which can be matched with the power generation movable gear sleeve, and the other mode low-speed gear is a driven mode low-speed gear which is connected with the intermediate shaft of the gearbox;
one mode low-speed gear is a driving mode high-speed gear which can be matched with the power generation movable gear sleeve, and the other mode low-speed gear is a driven mode high-speed gear which is connected with the intermediate shaft of the gearbox.
Through adopting above-mentioned technical scheme, can realize that the electricity generation main shaft is connected with power take off shaft with two fender position respectively.
Preferably, the electric coupling gearbox is provided with a gear control mechanism and a mode control mechanism, and the gear control mechanism controls the motion state of the gear execution mechanism; the mode control mechanism controls the movement state of the mode switching mechanism.
By adopting the technical scheme, the connection relation between the power generation main shaft and the power output shaft and the connection relation between the electric main shaft and the power output shaft are controlled.
Preferably, keep off position control mechanism and include that keep off position driving motor, keep off the position driving medium, keep off the position shifting block and keep off the position shift fork with keeping off position shifting block complex that the position driving medium is connected.
Through adopting above-mentioned technical scheme, realize the output gear control to the engine shaft.
Preferably, the mode control mechanism comprises a mode driving motor, a mode transmission member, a mode shifting block connected with the mode transmission member, and a mode shifting fork matched with the mode shifting block.
By adopting the technical scheme, the output gear control of the power generation main shaft is realized.
In a second aspect, the present application provides an automobile using the above dual motor automatic range-increasing hybrid drive system.
By adopting the technical scheme, the automobile adopting the driving mechanism can realize various driving modes, the power following performance and the climbing performance are enhanced, and the high-speed cruising and accelerating performance are optimized.
In summary, the present application includes at least the following advantageous technical effects:
1. the power generation gearbox and the electric coupling gearbox are arranged at two ends of the motor, and traditional gear sets with different transmission ratios are used, so that multiple working modes of pure electric drive, pure oil drive, hybrid power generation, hybrid drive, idle speed power generation, neutral gear parking, braking energy recovery and the like are realized.
2. The engine outputs power through multi-gear high-efficiency power of the power generation gearbox and the electric coupling gearbox, so that the energy consumption of pure motor driving when the automobile outputs at a high speed is reduced, and energy conservation and emission reduction are realized; the multi-gear power output of the motor is realized through different movement directions of the motor movable gear sleeve on the motor shaft, the power following performance is improved, the climbing performance of the automobile is enhanced, and the performances of high-speed cruising, acceleration and the like are optimized; two gears of the power generation gearbox and four gears of the electric coupling gearbox can realize the selection and replacement of two gears of the generator, two gears of the motor and four gears of the engine, and more movable gear sleeves, transmission gear sets and related control mechanisms are added in the same way, so that the requirement of matching more speed ratios of the engine and the generator can be met.
3. The concentric shafts of the engine, the generator and the motor are used for power output, the integral power structure is compact, and the power transmission is efficient; the radial occupied space is small, the space requirement of the rear-drive vehicle is fully met, and the rear-drive vehicle is extremely suitable for being applied to the rear-drive vehicle.
4. The gear control mechanism and the mode control mechanism with the driving motor and the sensor are combined with the electronic control unit to realize full-automatic switching and gear switching of the power of the motor and the engine and realize automatic energy conversion of the engine and the generator.
Drawings
Fig. 1 is a working block diagram of a current electric vehicle driving system.
Fig. 2 is an operation block diagram of the drive system of embodiment 1.
Fig. 3 is a composition diagram of a drive system of embodiment 1.
Fig. 4 is a schematic diagram of a drive system of embodiment 1.
Fig. 5 is a schematic view of the structure of a drive system of embodiment 1.
Fig. 6 is a diagram of an electrically-coupled transmission gear set of embodiment 1.
Fig. 7 is a structural diagram of a shift position control mechanism and a mode control mechanism in embodiment 1.
FIG. 8 is an operation diagram of a gear shift fork and a mode shift fork according to the embodiment 1.
FIG. 9 is a schematic view of the mechanism of the drive system of embodiment 2.
Description of reference numerals: 1. an engine; 11. an engine output shaft; 2. a power generation gearbox; 21. a first case gear; 22. a second case gear; 23. a third case gear; 24. a fourth case gear; 25. a gearbox intermediate shaft; 26. a movable gear sleeve of the gear box; 27. a gearbox sensor; 3. a generator; 31. a power generation main shaft; 311. a movable power generation gear sleeve; 32. a power generation stator; 33. a power generation rotor; 4. an electric motor; 41. an electric spindle; 411. an electric movable gear sleeve; 42. an electric stator; 43. an electric rotor; 5. an electrically-coupled transmission; 51. a power take-off shaft; 52. a gearbox countershaft; 53. a gear actuator; 531. a driving gear low-speed gear; 532. a driven gear low-speed gear; 533. a driving gear high-speed gear; 534. a driven gear high-speed gear; 54. a mode switching mechanism; 541. an active mode low speed gear; 542. a driven mode low speed gear; 543. an active mode high speed gear; 544. a driven mode high speed gear; 55. a gear control mechanism; 551. a gear driving motor; 552. a gear transmission part; 553. a gear shifting block; 554. a gear shifting fork; 555. a gear sensor; 56. a mode control mechanism; 561. a mode driving motor; 562. a mode transmission member; 563. a mode shifting block; 564. a mode shift fork; 565. a mode sensor; 57. and supporting the shaft.
Detailed Description
The present application is described in further detail below with reference to figures 1-8.
Example 1
The embodiment 1 of the application discloses a dual-motor four-gear range-extending hybrid drive system.
Referring to fig. 2, the dual-motor automatic gear range-increasing hybrid drive system comprises an engine 1, a power generation gearbox, a generator 3, a motor 4 and an electric coupling gearbox 5, wherein the motor 4 is transmitted to a differential rear axle through the electric coupling gearbox 5, the generator 3 is connected with the engine 1 through the power generation gearbox, the generator 3 can drive the engine 1 to start, and the engine 1 can also drive the generator 3 to generate power. The engine 1 can be directly driven to the electric coupling gearbox 5 through the power generation gearbox, and the electric coupling gearbox 5 is driven to a differential rear axle of the extended range electric vehicle, so that the engine 1 is driven.
Referring to fig. 3, the driving system includes an engine 1, a power generation gearbox 2, a generator 3, a motor 4, and an electric coupling gearbox 5, which are sequentially connected in series.
Referring to fig. 4 and 5, the engine output shaft 11 is connected to the power generation gearbox 2, the power generation gearbox 2 includes a first box gear 21, a second box gear 22, a third box gear 23, a fourth box gear 24 and a gearbox intermediate shaft 25, the engine output shaft 11 is fixedly connected to the first box gear 21, the first box gear 21 is externally engaged with the second box gear 22, the second box gear 22 is fixedly connected to the gearbox intermediate shaft 25, the gearbox intermediate shaft 25 is fixedly connected to the fourth box gear 24, the fourth box gear 24 is externally engaged with the third box gear 23, the third box gear 23 is connected to the power generation spindle 31, the power generation spindle 41 is hollow, i.e. the power generation spindle 41 is a hollow sleeve, the power generation spindle 31 is inserted into the power generation spindle 41 and is coaxially arranged, i.e. the power generation spindle 31 and the power generation spindle 41 output concentrically but do not transmit power to each other, the power generation spindle 31 and the power generation spindle 41 are inserted into the power coupling gearbox, the electric coupling gearbox 5 comprises a gear actuator 53 (see fig. 5), a gear control mechanism 55 (see fig. 5), a mode switching mechanism 54 (see fig. 5), a mode control mechanism 56 (see fig. 5) and a gearbox intermediate shaft 52, wherein the gear control mechanism 55 (see fig. 5) realizes connection or disconnection of the electric main shaft 41 and the gear actuator 53 (see fig. 5), and the mode control mechanism 56 (see fig. 5) realizes connection or disconnection of the power generation main shaft 31 and the mode switching mechanism 54 (see fig. 5).
The gear executing mechanism 53 comprises a driving gear low-speed gear 531, a driven gear low-speed gear 532, a driving gear high-speed gear 533, a driven gear high-speed gear 534 and an electric movable gear sleeve 411; the mode switching mechanism 54 includes a driving mode low-speed gear 541, a driven mode low-speed gear 542, a driving mode high-speed gear 543, a driven mode high-speed gear 544, and a power generation movable sleeve 311.
The driving gear low-speed gear 531 is externally meshed with the driven gear low-speed gear 532, and the driving gear high-speed gear 533 is externally meshed with the driven gear high-speed gear 534; the drive mode low-speed gear 541 is externally engaged with the driven mode low-speed gear 542, and the drive mode high-speed gear 543 and the driven mode high-speed gear 544 are externally engaged.
The driven low-gear 532, driven high-gear 534, driven low-gear 542 and driven high-gear 544 are all grounded to the transmission countershaft 52.
The driving gear low-speed gear 531 and the driving gear high-speed gear 533 are respectively arranged on the electric main shaft 41 in a penetrating manner, the driving gear low-speed gear 531 is not in transmission with the electric main shaft 41, and the driving gear high-speed gear 533 is not in transmission with the electric main shaft 41; the driving mode low-speed gear 541 and the driving mode high-speed gear 543 are respectively inserted into the power generation spindle 31, the driving mode low-speed gear 541 is not in transmission with the power generation spindle 31, and the driving mode high-speed gear 543 is not in transmission with the power generation spindle 31. The active mode high-speed gear 543 is connected with the power output shaft 51, so as to realize the connection between the electric coupling gearbox 5 and the differential rear axle of the extended range electric vehicle.
An electric movable gear sleeve 411 is connected to the electric main shaft 41 in the electric coupling gearbox 5, the electric movable gear sleeve 411 and the electric main shaft 41 are connected through splines and move together, and the electric movable gear sleeve 411 can move axially along the electric main shaft 41. The driving gear low-speed gear 531 and the driving gear high-speed gear 533 are respectively provided with a fixed gear sleeve; the power generation main shaft 31 in the electric coupling gearbox 5 is connected with a power generation movable gear sleeve 311, the power generation movable gear sleeve 311 and the power generation main shaft 31 are connected through splines and move together, and the power generation movable gear sleeve 311 can move along the axial direction of the power generation main shaft 31. The drive mode low-speed gear 541 and the drive mode high-speed gear 543 are respectively provided with a fixed gear sleeve.
The gear control mechanism 55 comprises a gear driving motor 551, a gear transmission 552, a gear shifting block 553 connected with the gear transmission 552, and a gear shifting fork 554 engaged with the gear shifting block 553; mode control mechanism 56 includes a mode drive motor 561, a mode driver 562, a mode dial 563 connected to mode driver 562, and a mode shift 564 engaged with mode dial 563.
Referring to fig. 5, the engine output shaft 11 transmits power to the power generation main shaft 31 via the first case gear 21, the second case gear 22, the gear case intermediate shaft 25, the fourth case gear 24, and the third case gear 23, the power generation main shaft 31 is fixed to the power generation rotor 33, and the power generation rotor 33 is rotatable with respect to the power generation stator 32. The electric main shaft 41 is arranged in a hollow mode, the power generation main shaft 31 penetrates through the electric main shaft 41 and extends to the electric coupling gearbox 5, the electric main shaft 41 is fixedly connected with the electric rotor 43, the electric rotor 43 can rotate relative to the electric stator 42, and the power generation main shaft 31 and the electric main shaft 41 are arranged coaxially and do not transmit power with each other.
The gear control mechanism 55 controls the gear actuator 53 to be connected to or disconnected from the power output shaft 51, and the mode control mechanism 56 controls the mode switching mechanism 54 to be connected to or disconnected from the power output shaft 51.
Referring to fig. 6 and 4, the driving range low gear 531 is externally meshed with the driven range low gear 532, and the driving range high gear 533 is externally meshed with the driven range high gear 534; the drive mode low-speed gear 541 is externally engaged with the driven mode low-speed gear 542, and the drive mode high-speed gear 543 and the driven mode high-speed gear 544 are externally engaged. The driven low-gear 532, driven high-gear 534, driven low-gear 542 and driven high-gear 544 are all grounded to the transmission countershaft 52.
The electric movable sleeve gear 411 is arranged between the driving gear low-speed gear 531 and the driving gear high-speed gear 533 in the axial direction of the electric main shaft 41; the power generation movable sleeve 311 is disposed between the drive mode low-speed gear 541 and the drive mode high-speed gear 543 in the axial direction of the power generation main shaft 31.
The active mode high-speed gear 543 is connected to the power output shaft 51. Namely, the electric coupling gearbox 5 is connected with a rear axle of a differential of the vehicle, and the power output shaft 51 is controlled by a vehicle control system to be connected with the engine output shaft 11 and/or the electric main shaft 41 or to be separated from the connection state. When the engine output shaft 11 is connected, the engine 1 is directly driven to the rear axle differential, and two driving speed ratios can be realized; when the electric main shaft 41 is connected, the electric main shaft 41 is connected with the power output shaft 51, and the motor 4 drives a rear axle differential of the vehicle; when the engine 1 and the motor 4 are connected together, the engine 1 and the motor 4 are connected to the rear axle with the power output shaft 51 to form hybrid power assistance.
Referring to fig. 7, the gear control mechanism 55 includes a gear driving motor 551, a gear transmission 552, a gear shifting block 553 and a gear shifting fork 554, wherein a gear sensor 555 feeds a detected position signal back to a vehicle control system, the vehicle control system receives the signal of the gear sensor 555, the vehicle control system accurately controls the motion of the gear driving motor 551, the gear shifting block 553 is transmitted through the gear transmission 552, the gear shifting block 553 is transmitted to the gear shifting fork 554, the gear shifting fork 554 is slidably connected with a support shaft 57, and the support shaft 57 is parallel to the electric spindle 41.
The gear control mechanism 55 in the electric coupling gearbox 5 controls the switching of high and low gears, and the output of the motor 4 is two high and low gears. The device is suitable for different working conditions such as low-speed starting, climbing and high-speed running.
The mode control mechanism 56 comprises a mode driving motor 561, a mode transmission member 562, a mode shifting block 563 connected with the mode transmission member 562 and a mode shifting fork 564 matched with the mode shifting block 563, the mode sensor 565 feeds back a detected position signal to a vehicle control system, the vehicle control system receives a signal of the gear sensor 555, the vehicle control system accurately controls the mode driving motor 561 to move, the mode driving motor 562 transmits the position signal to the mode shifting block 563, the mode shifting block 563 transmits the position signal to the mode shifting fork 564, and the mode shifting fork 564 is in sliding connection with the support shaft 57.
Referring to fig. 8, the gear shifter 554 is inserted into the annular groove of the electric movable sleeve 411, and the gear shifter 554 moves the electric movable sleeve 411 toward the driving gear low-speed gear 531 or toward the driving gear high-speed gear 533. The end of the driving gear low-speed gear 531 is fixedly provided with a fixed gear sleeve, the end of the driving gear high-speed gear 533 is fixedly provided with a fixed gear sleeve, the fixed gear sleeve is sleeved on the electric main shaft 41 and is not connected with the electric main shaft 41 and can idle around the electric main shaft 41, the gear shifting fork 554 moves to enable the electric movable gear sleeve 411 to be connected with the fixed gear sleeve, power is transmitted to the driving gear low-speed gear 531 or the driving gear high-speed gear 533, and therefore the two gears are changed. Therefore, the gear shifting fork 554 can be engaged with different gear sets to realize the electric high-low gear shifting, and can also be placed in the middle position to be separated from the gear, so as to realize the complete separation from the electric main shaft 41. In fig. 8, the electric movable sleeve gear 411 is in the neutral position and is not connected to either the driving low-speed gear 531 or the driving high-speed gear 533.
The mode shift fork 564 is inserted into the ring groove of the power generation moving gear sleeve 311, and the mode shift fork 564 drives the power generation moving gear sleeve 311 to move toward the active mode low-speed gear 541 or the active mode high-speed gear 543. The end of the active mode low-speed gear 541 is provided with a fixed gear sleeve, the fixed gear sleeve is sleeved on the power generation main shaft 31 and is not connected with the power generation main shaft 31, the fixed gear sleeve can idle around the power generation main shaft 31, the end of the active mode high-speed gear 543 is fixedly provided with a fixed gear sleeve, the power generation movable gear sleeve 311 is connected with the fixed gear sleeve by the movement of a shifting fork, power is transmitted to the active mode low-speed gear 541 or the active mode high-speed gear 543, and therefore the two gears are changed. The power generation movable sleeve 311 in fig. 8 is not connected to the drive mode low-speed gear 541 nor the drive mode high-speed gear 543 in the neutral position.
Referring to fig. 4, the transmission relationships of the various drive modes are detailed as follows:
the dual-motor four-gear range-extending hybrid drive system of the embodiment has four transmission shafts, namely an engine output shaft 11, a power generation main shaft 31, an electric main shaft 41 and a power output shaft 51, which are coaxially arranged.
1. Drive transmission path of pure electric low-gear drive mode
The electric movable gear sleeve 411 is connected with the driving gear low-speed gear 531, and the power generation movable gear sleeve 311 is located at the middle position.
The electric motor 4, the electric main shaft 41, the electric movable gear sleeve 411, the driving gear low-speed gear 531, the driven gear low-speed gear 532, the gearbox intermediate shaft 52, the driven mode high-speed gear 544, the driving mode high-speed gear 543, the power output shaft 51 and the vehicle rear axle.
2. Drive transmission path of pure electric high gear drive mode
The electric movable gear sleeve 411 is connected with the driving gear high-speed gear 533, and the power generation movable gear sleeve 311 is located at the middle position.
The electric motor 4, the electric main shaft 41, the power generation movable gear sleeve 311, the driving gear high-speed gear 533, the driven gear high-speed gear 534, the gearbox intermediate shaft 52, the driven mode high-speed gear 544, the driving mode high-speed gear 543, the power output shaft 51 and the vehicle rear axle.
3. Driving transmission path of engine 1 direct drive mode speed ratio 1
The electric movable gear sleeve 411 is located at the middle position, and the power generation movable gear sleeve 311 is connected with the active mode high-speed gear 543.
The power generation device comprises an engine 1, an engine output shaft 11, a first box gear 21, a second box gear 22, a gearbox intermediate shaft 25, a fourth box gear 24, a third box gear 23, a power generation main shaft 31, a power generation movable gear sleeve 311, an active mode high-speed gear 543, a power output shaft 51 and a vehicle rear axle.
4. Driving transmission path of engine 1 direct drive mode speed ratio 2
The electric movable gear sleeve 411 is located at the middle position, and the power generation movable gear sleeve 311 is connected with the active mode low-speed gear 541.
The power generation device comprises an engine 1, an engine output shaft 11, a first box gear 21, a second box gear 22, a gear box intermediate shaft 25, a fourth box gear 24, a third box gear 23, a power generation main shaft 31, a power generation movable gear sleeve 311, a driving mode low-speed gear 541, a driven mode low-speed gear 542, a gearbox intermediate shaft 52, a driven mode high-speed gear 544, a driving mode high-speed gear 543, a power output shaft 51 and a vehicle rear axle.
5. Drive transmission path in hybrid power generation mode
The electric movable sleeve gear 411 is connected to the driving gear low-speed gear 531 (driving gear high-speed gear 533), and the power generation movable sleeve gear 311 is located at the neutral position.
The electric motor 4, the electric main shaft 41, the electric movable gear sleeve 411, the driving gear low-speed gear 531 (driving gear high-speed gear 533), the driven gear low-speed gear 532 (driven gear high-speed gear 534), the gearbox intermediate shaft 52, the driven mode high-speed gear 544, the driving mode high-speed gear 543, the power output shaft 51 and the vehicle rear axle.
The generator comprises an engine 1, an engine output shaft 11, a first box gear 21, a second box gear 22, a gearbox intermediate shaft 25, a fourth box gear 24, a third box gear 23, a power generation main shaft 31, a power generation rotor 33 and a power generator 3.
6. Drive transmission path in hybrid power-assisted mode
The electric movable sleeve 411 is connected to the drive low-speed gear 531 (drive high-speed gear 533), and the electric movable sleeve 311 is connected to the drive mode high-speed gear 543.
The electric motor 4, the electric main shaft 41, the electric movable gear sleeve 411, the driving gear low-speed gear 531 (driving gear high-speed gear 533), the driven gear low-speed gear 532 (driven gear high-speed gear 534), the gearbox intermediate shaft 52, the driven mode high-speed gear 544, the driving mode high-speed gear 543, the power output shaft 51 and the vehicle rear axle.
The power generation device comprises an engine 1, an engine output shaft 11, a first box gear 21, a second box gear 22, a gearbox intermediate shaft 25, a fourth box gear 24, a third box gear 23, a power generation main shaft 31, a power generation movable gear sleeve 311, an active mode high-speed gear 543, a power output shaft 51 and a vehicle rear axle.
When the hybrid power-assisted driving mode works, the power generation movable gear sleeve 311 is in the middle position or is connected with the active mode high-speed gear 543, so that the engine 1 is switched between the power generation mode and the direct driving mode of the engine 1. The hybrid power-assisted driving mode is characterized in that a pure electric driving mode and a pure oil driving mode of the engine 1 are operated together, and the driving path is switched and adjusted according to different driving loads. The method is used for the driving condition that the vehicle needs to accelerate and climb the slope. Under the pure electric driving working condition, the vehicle control system can simultaneously control the high-low gear change of electric driving according to signals of vehicle speed, an accelerator pedal and the like, can change four output powers and speeds according to vehicle condition requirements, judges that the vehicle system needs the assistance of the engine 1 when entering a heavy load working condition of climbing or accelerating, firstly starts the engine 1 and adjusts the rotating speed of the engine 1 to be synchronous with the rotating speed of the motor, and then outputs a signal to drive the mode switching mechanism 54 to be in gear shifting, so that the assistance working mode of the engine 1 is realized.
7. Path of braking energy recovery mode
The electric movable gear sleeve 411 is connected with the driving gear high-speed gear 533, and the power generation movable gear sleeve 311 is located at the middle position.
The rear axle of the wheel, the power output shaft 51, the driving mode high-speed gear 543, the driven mode high-speed gear 544, the intermediate shaft 52 of the gearbox, the driven gear high-speed gear 534, the driving gear high-speed gear 533, the electric movable gear sleeve 411, the electric main shaft 41 and the electric motor 4.
8. Path of idle power generation mode
The electric movable gear sleeve 411 is located at the middle position, and the power generation movable gear sleeve 311 is located at the middle position.
The generator comprises an engine 1, an engine output shaft 11, a first box gear 21, a second box gear 22, a gearbox intermediate shaft 25, a fourth box gear 24, a third box gear 23, a power generation main shaft 31, a power generation rotor 33 and a power generator 3.
When the engine 1 is in a pure oil driving mode and a hybrid power-assisted driving mode, the power generation main shaft 31 rotates, the generator 3 is controlled to output torque to be zero by adjusting the motor controller, the generator 3 stops generating power at the moment, no-load running loss is small, and loss and influence are avoided on the whole system.
The dual-motor four-gear range-extending hybrid driving system can be used in the field of range-extending electric vehicles or hybrid driving.
The implementation principle of the dual-motor automatic gear range-increasing hybrid drive system of the embodiment 1 is as follows: the wide combination of multi-gear speed ratio selection is adopted, so that the extended range automobile can achieve the best power energy consumption and driving comfort under various working conditions, and the working modes of hybrid power and pure oil can be realized. The starting and low speed adopt a pure low gear mode, a pure high gear mode for middle and middle speed and load, a hybrid power-assisted mode for acceleration or climbing, and various speed ratio modes which are directly driven by the available engine 1 and have middle and high speed for power saving.
Example 2
Referring to fig. 9, the present embodiment is different from embodiment 1 in that the third box gear 23 in the generator gear box 2 is not fixedly connected to the generator shaft 31, but is sleeved on the generator shaft 31, a fixed gear sleeve is provided on the outer periphery of the third box gear 23, a gear box movable gear sleeve 26 is provided on the generator shaft 31 between the first box gear 21 and the third box gear 23, and when the gear box movable gear sleeve 26 moves towards the generator 1, the engine output shaft 11 is directly connected to the generator shaft 31 connected to the gear box movable gear sleeve 26, so as to realize transmission; when the movable gear sleeve 26 of the gear box moves in the direction away from the generator 1, the output shaft 11 of the engine enters the first box gear 21, the second box gear 22, the third box gear 23 and the fourth box gear 24 and is transmitted to the generator shaft 31.
A gearbox control mechanism comprising a gearbox sensor 27 is also provided within the power generating gearbox 2 to control the direction of movement of the gearbox moving sleeve 26.
The implementation principle of the embodiment is basically the same as that of the embodiment 1, a movable gear sleeve 26 of the gear box is additionally arranged in the power generation gear box 2, and two transmission ratios are realized through different movement directions of the movable gear sleeve 26 of the gear box, so that two gears from the engine 1 to the generator 3 are selected.
Example 3
The present embodiment differs from embodiment 1 in that the power generation gearbox 2 is not included, and the engine output shaft 11 is connected to the power generation main shaft 31.
The present embodiment is basically the same as embodiment 1, except that there is no power conversion between the engine 1 and the generator.
Example 4
This example differs from example 1 in that: and a movable power generation gear sleeve 311 is added, and a gear set and a fixed gear sleeve which can be connected with the movable power generation gear sleeve are added correspondingly.
The implementation principle of the embodiment is basically the same as that of the embodiment 1, and one or two gears can be added to the engine.
Example 5
This example differs from example 1 in that: an electric movable gear sleeve 411 is added, and a gear set and a fixed gear sleeve which can be connected with the electric movable gear sleeve are added correspondingly.
The implementation principle of the present embodiment is basically the same as that of embodiment 1, and one or two gears can be added to the motor.
Example 6
This embodiment provides an automobile using the two-motor automatic transmission range-extending hybrid drive system described in embodiment 1.
The principle of implementation of the drive system of the present embodiment is the same as that of embodiment 1.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, structure and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. Bi-motor automatic gear increases form hybrid drive system, including engine (1), generator (3) and motor (4), its characterized in that: the generator is characterized in that an engine output shaft (11) is connected with one end of a power generation main shaft (31), the other end of the power generation main shaft (31) penetrates through an electric main shaft (41) and is coaxially arranged, the power generation main shaft (31) and the electric main shaft (41) are respectively and rotatably connected with an electric coupling gearbox (5), and the electric coupling gearbox (5) is used for connecting a power output shaft (51);
the electric coupling gearbox (5) comprises a gear actuator (53), a mode switching mechanism (54) and a gearbox intermediate shaft (52) which is connected with the gear actuator (53) and the mode switching mechanism (54);
the gear executing mechanism (53) realizes connection or disconnection of the electric main shaft (41) and the power output shaft (51);
the mode switching mechanism (54) realizes connection or disconnection of the power generation main shaft (31) and the power output shaft (51).
2. The dual-motor automatic-gear range-extending hybrid drive system according to claim 1, wherein: the gear executing mechanism (53) comprises at least one electric movable gear sleeve (411) connected with the electric main shaft (41) and at least two gears which are matched with the electric movable gear sleeve (411) and transmit power to the power output shaft (51).
3. The dual-motor automatic-gear range-extending hybrid drive system according to claim 2, wherein: the gear actuating mechanism (53) comprises an electric movable gear sleeve (411) connected with the electric main shaft (41), a pair of externally meshed gear low-speed gears and a pair of externally meshed gear high-speed gears;
wherein:
one gear low-speed gear is a driving gear low-speed gear (531) which can be matched with the electric movable gear sleeve (411), and the other gear low-speed gear is a driven gear low-speed gear (532) which is connected with the intermediate shaft (52) of the gearbox;
one gear high-speed gear is a driving gear high-speed gear (533) which can be matched with the electric movable gear sleeve (411), and the other gear is a driven gear high-speed gear (534) which is connected with the intermediate shaft (52) of the gearbox.
4. The dual-motor automatic-gear range-extending hybrid drive system according to claim 1 or 2, characterized in that: the mode switching mechanism (54) comprises at least one power generation movable gear sleeve (311) connected with a power generation main shaft (31) and at least one pair of gear sets which are matched with the power generation movable gear sleeve (311) and transmit power to a power output shaft (51).
5. The dual-motor automatic-gear range-extending hybrid drive system according to claim 4, wherein: the mode switching mechanism (54) comprises a power generation movable gear sleeve (311) connected with the power generation main shaft (31), a pair of externally meshed mode low-speed gears and a pair of externally meshed mode high-speed gears;
wherein:
one mode low-speed gear is a driving mode low-speed gear (541) which can be matched with the power generation movable gear sleeve (311), and the other mode low-speed gear is a driven mode low-speed gear (542) which is connected with the gearbox intermediate shaft (52);
one mode low-speed gear is a driving mode high-speed gear (543) which can be matched with the power generation movable gear sleeve (311), and the other mode low-speed gear is a driven mode high-speed gear (544) which is connected with the gearbox intermediate shaft (52).
6. The dual-motor automatic-gear range-extending hybrid drive system according to claim 4, wherein: the power generation device is characterized by further comprising a power generation gearbox (2), wherein at least two gears which transmit power mutually are arranged in the power generation gearbox (2), an engine output shaft (11) is connected with one gear in the power generation gearbox (2), and the other gear in the power generation gearbox (2) is connected with the power generation main shaft (31).
7. The dual-motor automatic-gear range-extending hybrid drive system according to claim 6, wherein: the electric coupling gearbox (5) is provided with a gear control mechanism (55) and a mode control mechanism (56), wherein the gear control mechanism (55) controls the motion state of the gear execution mechanism (53); the mode control mechanism (56) controls the movement state of the mode switching mechanism (54).
8. The dual-motor automatic-gear range-extending hybrid drive system according to claim 7, wherein: the gear control mechanism (55) comprises a gear driving motor (551), a gear transmission part (552), a gear shifting block (553) connected with the gear transmission part (552) and a gear shifting fork (554) matched with the gear shifting block (553).
9. The dual-motor automatic-gear range-extending hybrid drive system according to claim 7, wherein: the mode control mechanism (56) comprises a mode driving motor (561), a mode transmission piece (562), a mode shifting block (563) connected with the mode transmission piece (562) and a mode shifting fork (564) matched with the mode shifting block (563).
10. A vehicle employing the dual motor automatic range extending hybrid drive system of any of claims 1-9.
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| CN202011347327.8A CN112319205A (en) | 2020-11-26 | 2020-11-26 | Dual-motor automatic gear range-increasing hybrid drive system and automobile using same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113619378A (en) * | 2021-09-13 | 2021-11-09 | 无锡明恒混合动力技术有限公司 | Multi-gear double-motor planet row power distribution driving system |
| CN113665344A (en) * | 2021-08-05 | 2021-11-19 | 南通大任永磁电机制造有限公司 | Dual-motor four-speed-ratio range-extended electric vehicle power assembly and electric vehicle |
-
2020
- 2020-11-26 CN CN202011347327.8A patent/CN112319205A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113665344A (en) * | 2021-08-05 | 2021-11-19 | 南通大任永磁电机制造有限公司 | Dual-motor four-speed-ratio range-extended electric vehicle power assembly and electric vehicle |
| CN113665344B (en) * | 2021-08-05 | 2023-12-15 | 南通大任永磁电机制造有限公司 | Dual-motor four-speed-ratio range-extended electric vehicle power assembly and electric vehicle |
| CN113619378A (en) * | 2021-09-13 | 2021-11-09 | 无锡明恒混合动力技术有限公司 | Multi-gear double-motor planet row power distribution driving system |
| CN113619378B (en) * | 2021-09-13 | 2024-01-12 | 无锡明恒混合动力技术有限公司 | Multi-gear double-motor planetary gear power split driving system |
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