CN113733891A - Dual-mode hybrid power transmission device - Google Patents
Dual-mode hybrid power transmission device Download PDFInfo
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- CN113733891A CN113733891A CN202111157628.9A CN202111157628A CN113733891A CN 113733891 A CN113733891 A CN 113733891A CN 202111157628 A CN202111157628 A CN 202111157628A CN 113733891 A CN113733891 A CN 113733891A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/36—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
- B60K6/365—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings with the gears having orbital motion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—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
- B60K6/38—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 driveline clutches
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
- B60K6/44—Series-parallel type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- 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
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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
- B60K6/38—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 driveline clutches
- B60K2006/381—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 driveline clutches characterized by driveline brakes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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- Structure Of Transmissions (AREA)
Abstract
The invention provides a dual-mode hybrid power transmission device, which relates to the technical field of hybrid power automobile transmission and comprises a controller, a planetary gear row group, two motors and a torque transmission device, wherein the planetary gear row group, the two motors and the torque transmission device are coaxially arranged; the power split mechanism consisting of the two planetary gear rows and the torque transmission device can provide a double-mode power split mode and four fixed speed ratio pure fuel modes, wherein the double modes are divided into an input power split mode and a compound power split mode, and the four fixed speed ratios of the pure fuel mode are two speed reduction gears, a direct gear and an overdrive gear respectively. Compared with single-mode power splitting, the speed ratio range of the hybrid power transmission device can be expanded, the torque and the power of the motor can be reduced, and four pure fuel oil running modes can be provided to meet the requirements of more different working conditions.
Description
Technical Field
The invention relates to the technical field of hybrid electric vehicles, in particular to a dual-mode hybrid power transmission device.
Background
Hybrid transmissions are effective ways to reduce fuel consumption and reduce pollutant emissions of automobiles, and have become the focus of research and development by various automobile manufacturers. The hybrid power transmission adopting the power splitting configuration can realize stepless speed change, thereby reducing the oil consumption and the harmful gas emission of an engine to a greater extent. This makes this arrangement a great advantage in hybrid transmissions.
However, single mode hybrid transmissions do not meet the wide range of speed ratios. To solve these problems, a two-mode power-split hybrid transmission has been proposed by combining two power-split modes. The dual-mode power split hybrid power transmission device can have the characteristics of different power split modes, and the transmission efficiency of the system and the performance of a vehicle are improved.
Patent application No. CN201710078036.5 discloses a dual-mode hybrid transmission, which adopts a ravigneaux mechanism, and cooperates with a brake, two motors and two clutches to obtain two power splitting modes and two fixed gears. However, the invention can realize a small number of fixed gears, and when the vehicle runs in a pure fuel mode, the vehicle can have a pause feeling due to the fact that the gear is shifted by a small number of gears.
A typical common company two-mode hybrid powertrain has three planetary rows and is also capable of achieving two-mode power splitting, but because of the three planetary row transmissions, it is relatively large in axial size.
The two-mode hybrid transmission utilizes a planetary gear train, an electric machine, clutches and brakes to compose and implement multiple power-split modes. With the popularization of automobiles in the society becoming higher and higher, people have greater and greater requirements on hybrid power transmission devices capable of obviously reducing automobile oil consumption and pollutant emission, and research and development of novel dual-mode hybrid power transmission devices with wider transmission ratio range and higher transmission efficiency are necessary.
Disclosure of Invention
The invention aims to solve the technical problems of large axial size and low transmission efficiency of the conventional power transmission device in the background art, and therefore provides a dual-mode hybrid power transmission device.
To solve the above problems, the present invention provides a two-mode hybrid transmission comprising: an engine input shaft, an engine output shaft, a shell, a planetary gear row group, a torque transmission device, a controller, a first motor and a second motor,
the planetary gear row group comprises a first planetary gear row and a second planetary gear row which are sequentially arranged from front to back,
the first planetary gear row comprises a first sun gear, a first planet carrier, a first planet gear and a first gear ring, the first sun gear and the first planet gear are in external meshing transmission, the first planet gear and the first gear ring are in internal meshing transmission, and the first planet gear is rotatably supported on the first planet carrier;
the second planetary gear row comprises a second sun gear, a second planet carrier, a second planet gear and a second gear ring, the second sun gear and the second planet gear are in external meshing transmission, the second planet gear and the second gear ring are in internal meshing transmission, and the second planet gear is rotatably supported on the second planet carrier;
the engine input shaft is fixedly connected with the first planet carrier, the first gear ring is fixedly connected with the second sun gear, and the second planet carrier is fixedly connected with the engine output shaft;
a first stator of the first motor is fixedly connected with the shell, and a first rotor of the first motor is connected with the first sun gear through a motor shaft;
a second stator of the second motor is fixedly connected with the shell, and a second rotor of the second motor is connected with the first gear ring through a motor shaft;
the torque transmission device comprises a first clutch, a second clutch, a first brake and a second brake, the first brake and the second brake are fixedly connected with the shell, the first brake is connected with the second gear ring, and the second brake is connected with the first gear ring;
the first sun gear is connected with the second gear ring through the first clutch, and the second sun gear is connected with the first gear ring through the second clutch;
the controller controls the first clutch, the second clutch, the first brake, and the second brake to be selectively engaged, and the controller controls the first motor and the second motor to selectively operate, implementing a pure electric mode, an input power split mode, a compound power split mode, and a pure fuel mode.
Alternatively, the second electric machine may be operated to achieve an electric-only mode by the controller engaging the first brake and turning off the engine to leave the engine input shaft without power input.
Optionally, the controller engages the first brake and turns on engine operation to provide power input to the engine input shaft, and the first and second electric machines operate to achieve an input split power split mode.
Optionally, the controller engages the first clutch and turns on the engine to make the input shaft of the engine have power input, and the first electric machine and the second electric machine operate to realize a compound split power split mode.
Optionally, the controller engages the second clutch and the first brake and opens the engine to operate so that the engine input shaft has power input, neither the first electric machine nor the second electric machine is operated, a fuel only mode is achieved, and a first gear transmission ratio is established between the input shaft and the engine output shaft.
Optionally, the controller engages the first clutch and the first brake and opens engine operation to allow power input to the engine input shaft, neither the first electric machine nor the second electric machine is operated, a fuel only mode is achieved, and a second gear transmission ratio is established between the engine input shaft and the engine output shaft.
Optionally, the controller engages the first clutch and the second clutch and turns on the engine to enable power input to the engine input shaft, neither the first electric machine nor the second electric machine is enabled, a fuel only mode is achieved, and a third gear transmission ratio is established between the engine input shaft and the engine output shaft.
Optionally, the controller engages the first clutch and the second brake and opens engine operation to allow power input to the engine input shaft, neither the first electric machine nor the second electric machine is operated, a fuel only mode is achieved, and a fourth gear transmission ratio is established between the engine input shaft and the engine output shaft.
Optionally, the controller engages the first brake and turns off the engine such that no power is input to the engine input shaft and the second electric machine reverses direction to achieve reverse.
Optionally, the first clutch and the second clutch are both multi-plate wet clutches or dog clutches, and the first brake and the second brake are drum brakes or multi-plate wet brakes.
Compared with the prior art, the invention at least has the following beneficial effects:
1. the dual-mode hybrid power transmission device provided by the invention adopts a planetary gear train for transmission, and the two planetary gear rows have simple and compact structures and small axial size;
2. the power split modes of an input split mode and a composite split mode can be provided to meet different requirements of low-speed running and high-speed running of the vehicle, four pure fuel modes with fixed speed ratios can be provided, and the traction force which is the same as that of a traditional fuel vehicle can be driven by only using an engine when the electric quantity of a battery is insufficient;
3. control of each mode and gear only requires the engagement of one or two control elements (clutch or brake), and the engagement and disengagement of only one pair of torque transmission members is required to change between adjacent gears in a fuel gear, and the control is simple.
Drawings
FIG. 1 is a schematic structural diagram of a two-mode hybrid transmission in accordance with an embodiment of the present invention;
description of reference numerals:
1-an engine input shaft, 2-a second rotor, 3-a second stator, 4-a shell, 5-a first rotor, 6-a first stator, 7-a first gear ring, 8-a first planet gear, 9-a first planet carrier, 10-a first sun gear, 11-a second gear ring, 12-a second planet carrier, 13-a second planet carrier, 14-a second sun gear and 15-an engine output shaft.
EM 1-first electric machine, EM 2-second electric machine, C1-first clutch, C2-second clutch, B1-first brake, B2-second brake.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, an embodiment of the present invention provides a hybrid transmission device, including a controller, an engine input shaft 1, an engine output shaft 15, a housing 4, a planetary gear set, a torque transmission device, a first electric machine EM1, and a second electric machine EM2, where the planetary gear set includes a first planetary gear set and a second planetary gear set sequentially installed from front to back, and each planetary gear set is composed of a sun gear, a planet carrier, a planet gear, and a ring gear.
The first planet row consists of a first sun gear 10, a first planet carrier 9, a first planet gear 8 and a first gear ring 7, the first sun gear 10 and the first planet gear 8 are in external meshing transmission, the first planet gear 8 and the first gear ring 7 are in internal meshing transmission, and the first planet gear 8 is rotatably supported on the first planet carrier 9;
the second planet row consists of a second sun gear 14, a second planet carrier 12, a second planet gear 13 and a second gear ring 11, the second sun gear 14 and the second planet gear 13 are in external meshing transmission, the second planet gear 13 and the second gear ring 11 are in internal meshing transmission, and the second planet gear 13 is rotatably supported on the second planet carrier 12;
the torque transmitting devices include a first clutch C1, a second clutch C2, a first brake B1 and a second brake B2. The first clutch C1 interconnects the first sun gear 10 with the second ring gear 11; the second clutch C2 interconnects the first sun gear 10 with the first ring gear 7;
the first brake B1 is connected with the second ring gear 11, the second brake B2 is connected with the first ring gear 7,
the first clutch C1, the second clutch C2, the first brake B1, and the second brake B2 are selectively engaged to implement, in conjunction with the first electric machine EM1 and the second electric machine EM2, an electric-only mode, an input power-split mode, a compound power-split mode, and a fuel-only mode. The specific implementation process comprises the following steps:
the controller implements electric only mode by engaging the first brake B1 when the engine is off, no power input is applied to the engine input shaft 1 and the second electric machine EM2 is active.
Specifically, the first brake B1 is engaged to connect the second ring gear 11 with the housing 4, preventing rotation of the second ring gear 11 relative to the housing 4, and the vehicle is driven by the second electric machine EM2 alone.
The controller realizes the input split power split mode by engaging the first brake B1 when the engine works, the engine input shaft 1 has power input, and the first electric machine EM1 and the second electric machine EM2 work,
specifically, the first brake B1 is engaged to connect the second ring gear 11 with the housing 4, preventing rotation of the second ring gear 11 relative to the housing 4. At this time, the power of the engine is divided into two parts, wherein one part is input into the first planet carrier 9, flows into the second planet carrier 12 through the first gear ring 7 and the second sun gear 14, and finally flows into the engine output shaft 15; the other part of power drives the first motor EM1 to generate electricity through the first sun gear 10 and convert the electricity into electric power, then drives the second motor EM2 to work and drive the first gear ring 7 to rotate, then flows into the second planet carrier 12 through the second sun gear 14, and finally flows into the engine output shaft 15.
The controller implements a compound split power split mode by engaging the first clutch C1 when the engine is on, the engine input shaft 1 has power input, and the first electric machine EM1 and the second electric machine EM2 are on.
Specifically, the first clutch C1 is engaged so that the first sun gear 10 and the second ring gear 11 are connected for rotation. At this time, a part of the engine is input into the first planet carrier 9, flows into the second planet carrier 12 through the first ring gear 7 and the second sun gear 14, and finally flows into the engine output shaft 15; one part of the power generation device drives a first motor EM1 to generate power and convert the power into electric power through a first sun gear 10, then drives a second motor EM2 to work and drive a first gear ring 7 to rotate, then flows into a second planet carrier 12 through a second sun gear 14, and finally flows into an engine output shaft 15; a portion flows into the second ring gear 11 through the first sun gear 10, then flows into the second carrier 12, and finally flows into the engine output shaft 15, and this mode is a compound split mode suitable for running the vehicle at medium and high speeds.
The controller realizes the pure fuel mode by engaging the second clutch C2 and the first brake B1, wherein the engine works at the moment, the engine input shaft 1 has power input, and the first electric machine EM1 and the second electric machine EM2 do not work.
In particular, the second clutch C2 is engaged and the first sun gear 10 and the first ring gear 7 are connected to rotate together, with the first planet row freedom being zero and the rotation speed of the entire planet row being the same as the input shaft. The first brake B1 is engaged to connect the second ring gear 11 with the housing 4, preventing rotation of the second ring gear 11 relative to the housing 4, establishing a first gear ratio between the engine input shaft 1 and the engine output shaft 15 via the second planetary gear set, first gear being a reduction gear.
The controller realizes the pure fuel mode by engaging the first clutch C1 and the first brake B1, wherein the engine works at the moment, the engine input shaft 1 has power input, and the first electric machine EM1 and the second electric machine EM2 do not work.
Specifically, the first clutch C1 is engaged to connect the first sun gear 10 and the second ring gear 11 for rotation together, the first brake B1 is engaged to connect the second ring gear 11 with the housing 4, rotation of the second ring gear 11 relative to the housing 4 is prevented, and a second gear ratio is established between the engine input shaft 1 and the engine output shaft 15 through the first planetary row and the second planetary row, the second gear being a reduction gear.
The controller is used for realizing a pure fuel mode by engaging the first clutch C1 and the second clutch C2, wherein the engine works at the moment, the engine input shaft 1 has power input, and the first electric machine EM1 and the second electric machine EM2 do not work.
Specifically, the first clutch C1 is engaged to connect the first sun gear 10 and the second ring gear 11 for rotation, and the second clutch C2 is engaged to connect the first sun gear 10 and the first ring gear 7 for rotation, when the first and second planetary rows have a degree of freedom of 0, the rotational speed is the same as the speed of the engine input shaft 1, a third gear transmission ratio is established between the engine input shaft 1 and the engine output shaft 15, and the third gear is a direct gear.
The controller realizes the pure fuel mode by engaging the first clutch C1 and the second brake B2, wherein the engine works at the moment, the input shaft 1 has power input, and the first electric machine EM1 and the second electric machine EM2 do not work.
Specifically, the first clutch C1 is engaged to connect the first sun gear 10 and the second ring gear 11 for rotation together, the second brake B2 is engaged to connect the first ring gear 7 with the housing 4, rotation of the first ring gear 7 relative to the housing 4 is prevented, a fourth gear ratio is established between the engine input shaft 1 and the engine output shaft 15 through the first planetary gear set and the second planetary gear set, and the fourth gear is an overdrive gear.
The controller achieves reverse by engaging the first brake B1 when the engine is off, no power is input to the engine input shaft 1, and the vehicle is driven in reverse by the second electric machine EM 2.
The operating logic table of the first clutch C1, the second clutch C2, the first brake B1 and the second brake B2 is shown in Table 1:
| mode(s) | Working clutch | Working brake | Engine | First motor | Second electric machine |
| Electric only mode | / | B1 | Stop | Stop | Starting up |
| Input split mode | / | B1 | Starting up | Starting up | Starting up |
| Compound split mode | C1 | / | Starting up | Starting up | Starting up |
| Fixed gear 1 | C2 | B1 | Starting up | Stop | Stop |
| Fixed gear 2 | C1 | B1 | Starting up | Stop | Stop |
| Fixed |
C1 | C2 | Starting up | Stop | Stop |
| Fixed gear 4 | C1 | B2 | Starting up | Stop | Stop |
| Reverse gear | / | B1 | Stop | Stop | Starting up |
In the present invention, the first clutch C1 and the second clutch C2 are multi-plate wet clutches or dog clutches, and the first brake B1 and the second brake B2 are drum brakes or multi-plate wet brakes.
Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to be within the scope of the present disclosure.
Claims (10)
1. A two-mode hybrid transmission, comprising:
an engine input shaft (1), an engine output shaft (15), a shell (4), a planetary gear row group, a torque transmission device, a controller, a first electric machine (EM1) and a second electric machine (EM2),
the planetary gear row group comprises a first planetary gear row and a second planetary gear row which are sequentially arranged from front to back,
the first planetary gear row comprises a first sun gear (10), a first planet carrier (9), a first planet gear (8) and a first gear ring (7), the first sun gear (10) and the first planet gear (8) are in external meshing transmission, the first planet gear (8) and the first gear ring (7) are in internal meshing transmission, and the first planet gear (8) is rotatably supported on the first planet carrier (9);
the second planetary gear row comprises a second sun gear (14), a second planet carrier (12), second planet gears (13) and a second gear ring (11), the second sun gear (14) and the second planet gears (13) are in external meshing transmission, the second planet gears (13) and the second gear ring (11) are in internal meshing transmission, and the second planet gears (13) are rotatably supported on the second planet carrier (12);
the engine input shaft (1) is fixedly connected with the first planet carrier (9), the first gear ring (7) is fixedly connected with the second sun gear (14), and the second planet carrier (12) is fixedly connected with the engine output shaft (15);
a first stator (6) of the first motor (EM1) is fixedly connected with the shell (4), and a first rotor (5) of the first motor (EM1) is connected with the first sun gear (10) through a motor shaft;
a second stator (3) of the second motor (EM2) is fixedly connected with the shell (4), and a second rotor (2) of the second motor (EM2) is connected with the first gear ring (7) through a motor shaft;
the torque transmission device comprises a first clutch (C1), a second clutch (C2), a first brake (B1) and a second brake (B2), the first brake (B1) and the second brake (B2) are fixedly connected with the shell (4), the first brake (B1) is connected with the second ring gear (11), and the second brake (B2) is connected with the first ring gear (7);
the first sun gear (10) is connected to the second ring gear (11) via the first clutch (C1), and the second sun gear (14) is connected to the first ring gear (7) via the second clutch (C2);
the controller controls the first clutch (C1), the second clutch (C2), the first brake (B1), and the second brake (B2) to be selectively engaged, and the controller controls the first electric machine (EM1) and the second electric machine (EM2) to be selectively operated, enabling an electric-only mode, an input power-split mode, a compound power-split mode, and a fuel-only mode.
2. A two-mode hybrid transmission as claimed in claim 1, characterized by the fact that said second electric machine (EM2) operates in electric-only mode by said controller engaging said first brake (B1) and turning off the engine to leave said engine input shaft (1) without power input.
3. A two-mode hybrid transmission as claimed in claim 1, wherein said controller engages said first brake (B1) and opens engine operation to power input to said engine input shaft (1), and said first electric machine (EM1) and said second electric machine (EM2) operate in an input split power split mode.
4. A two-mode hybrid transmission as claimed in claim 1, wherein said controller engages said first clutch (C1) and opens engine operation to power input to said engine input shaft (1), said first electric machine (EM1) and said second electric machine (EM2) operating in a compound-split power-split mode.
5. A two-mode hybrid transmission as claimed in claim 1, wherein said controller engages said second clutch (C2) and said first brake (B1) and opens engine operation to power input to said engine input shaft (1), neither said first electric machine (EM1) nor said second electric machine (EM2) is active, enabling a fuel only mode, and establishing a first gear ratio between said input shaft (1) and said engine output shaft (15).
6. A two-mode hybrid transmission as claimed in claim 1, wherein said controller engages said first clutch (C1) and said first brake (B1) and opens engine operation to power input to said engine input shaft (1), neither said first electric machine (EM1) nor said second electric machine (EM2) is active, enabling a fuel only mode, and establishing a second gear ratio between said engine input shaft (1) and said engine output shaft (15).
7. A two-mode hybrid transmission as claimed in claim 1, wherein said controller engages said first clutch (C1) and said second clutch (C2) and turns on engine operation to power input said engine input shaft (1), neither said first electric machine (EM1) nor said second electric machine (EM2) is active, enabling a fuel only mode, and establishing a third gear ratio between said engine input shaft (1) and said engine output shaft (15).
8. A two-mode hybrid transmission as claimed in claim 1, wherein said controller engages said first clutch (C1) and said second brake (B2) and opens engine operation to power input to said engine input shaft (1), neither said first electric machine (EM1) nor said second electric machine (EM2) is active, enabling a fuel-only mode, and establishing a fourth gear ratio between said engine input shaft (1) and said engine output shaft (15).
9. A two-mode hybrid transmission as claimed in claim 1, wherein said controller engages said first brake (B1) and turns off the engine to leave said engine input shaft (1) without power input, and said second electric machine (EM2) reverses direction to achieve reverse gear.
10. A two-mode hybrid transmission as claimed in claim 1, wherein said first clutch (C1) and said second clutch (C2) are both multi-plate wet clutches or dog clutches, and said first brake (B1) and said second brake (B2) are drum brakes or multi-plate wet brakes.
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| CN107187309A (en) * | 2017-05-02 | 2017-09-22 | 北京理工大学 | The double mode hybrid transmissions of commercial car |
| US20210053434A1 (en) * | 2017-03-30 | 2021-02-25 | Ekontrol Drive (Suzhou) Co., Ltd | Hybrid power and electric motor drive transmission device for power system and operation method therefor |
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2021
- 2021-09-30 CN CN202111157628.9A patent/CN113733891B/en active Active
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| JP2008114812A (en) * | 2006-11-07 | 2008-05-22 | Toyota Motor Corp | Hybrid driving device |
| US20100261565A1 (en) * | 2007-12-04 | 2010-10-14 | Xiaolin Ai | Dual-mode electromechanical variable speed transmission apparatus and method of control |
| CN106828072A (en) * | 2017-02-14 | 2017-06-13 | 北京理工大学 | The double mode hybrid transmissions of passenger car |
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