CN110588322A - Hybrid power transmission and vehicle - Google Patents
Hybrid power transmission and vehicle Download PDFInfo
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- CN110588322A CN110588322A CN201910950726.4A CN201910950726A CN110588322A CN 110588322 A CN110588322 A CN 110588322A CN 201910950726 A CN201910950726 A CN 201910950726A CN 110588322 A CN110588322 A CN 110588322A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 89
- 230000007246 mechanism Effects 0.000 claims abstract description 15
- 238000010248 power generation Methods 0.000 claims abstract description 9
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/24—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 combustion engines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/26—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/36—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
- B60K6/365—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings with the gears having orbital motion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/50—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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Structure Of Transmissions (AREA)
Abstract
The invention provides a hybrid transmission and a vehicle, and relates to the technical field of vehicle transmission mechanisms, in particular to the hybrid transmission which comprises the following components: the power generation mechanism comprises an engine and a first motor, and power of the engine can be output and then can generate power for the first motor; and the driving mechanism comprises a second motor and a planetary gear system, wherein the planetary gear system can transmit the power of the second motor and the power of the engine, and the pure electric driving mode and the hybrid power driving mode are driven. The invention adopts a double-motor and single-planet-wheel structure, and compared with the traditional pure electric transmission, the structure is simpler and more compact. The introduction of the double motors shortens the axial dimension, and the single planetary wheel realizes a larger transmission ratio. The motor can more accurately operate within a power range, and ultralow energy consumption is realized. The stepless speed change of the motor is realized through the planet wheel, the speed ratio range is larger, the electric quantity consumption is less, and the efficiency is higher.
Description
Technical Field
The invention relates to the technical field of vehicle transmission mechanisms, in particular to a hybrid power transmission and a vehicle.
Background
With the increasing severity of the national environmental protection policy, the emission standard of the traditional fuel oil automobile is improved continuously, so that the domestic market is not friendly to the transmission fuel oil automobile. And each host factory also continuously increases the investment on the development of new energy automobiles. The development of the pure electric vehicle is limited by the technical problems of the motor and the battery, so that great breakthrough is difficult to obtain in a short time, and meanwhile, the endurance mileage of the pure electric vehicle is consistent and is a problem for people. Therefore, the hybrid technology development which can improve the economical efficiency and the environmental protection and does not worry about the endurance mileage is very important.
The traditional transmission has a single structure and low integration level in a power system; there is no way to provide more assistance to the economy of the vehicle. The hybrid technology can improve the economy and the environmental protection of the vehicle in different ranges, and the endurance problem of the pure electric vehicle is not needed to be worried about. Thus, micro-hybrid and deep hybrid technologies have become mainstream in the current transmission technology development. The existing single-stage and two-stage transmissions are limited in speed ratio and only depend on a motor for speed regulation, so that the economical efficiency and the dynamic property of vehicle running are influenced. The existing gear transmission has large gear shifting impact and can influence the running smoothness of a vehicle. The existing transmission engine and the motor have lower working efficiency, and cause higher oil consumption and power consumption.
Disclosure of Invention
The invention aims to provide a hybrid power transmission, which solves the problems of poor dynamic property and poor fuel economy in the prior art.
Another object of the present invention is to solve the problem of poor ride comfort of the prior art vehicles.
Another object of the present invention is to solve the problems of high fuel consumption and high power consumption of the prior art vehicles.
It is a further object of the present invention to provide a vehicle having the above hybrid transmission.
In particular, the present invention provides a hybrid transmission comprising:
the power generation mechanism comprises an engine and a first motor, the engine outputs power and drives the first motor to generate power, and the electric energy generated by the first motor is used for charging the power battery; and
and the driving mechanism comprises a second motor and a planetary wheel system, wherein the transmission comprises a pure electric driving mode and a hybrid driving mode, when the transmission adopts the pure electric driving mode, the power battery is used as a power source alone, power is transmitted out of the planetary wheel system through the second motor alone to drive the vehicle, when the transmission adopts the hybrid driving mode, the power battery and the engine are used as the power source together, and the second motor and the engine transmit power out of the planetary wheel system to drive the vehicle. Optionally, the power generation mechanism further comprises an input shaft, a driving gear and a driven gear, the driving gear is fixedly connected to the input shaft, the driving gear is meshed with the driven gear, the driven gear is fixedly connected to the first motor, the engine outputs power through the input shaft, and power is transmitted to the first motor through the driving gear and the driven gear, so that the first motor is charged.
Optionally, the planetary gear system includes a sun gear, a planetary gear, a planet carrier, and a ring gear, the sun gear is connected to the motor shaft of the second motor, the sun gear is engaged with the planetary gear, and power of the second motor is transmitted through the sun gear, the planetary gear, and the planet carrier; the ring gear with the input shaft links firmly, the ring gear with the planet wheel meshing, the engine passes through the input shaft rotates will the power of engine by the ring gear the planet wheel reaches the planet carrier transmits away.
Optionally, the clutch further comprises a brake, and the brake is fixedly connected with the input shaft to fix or release the input shaft and the gear ring.
Optionally, the power transmission device further comprises an output shaft, wherein the output shaft is fixedly connected with the planet carrier so as to transmit the power transmitted to the planet wheel out through the planet carrier and the output shaft.
Optionally, when the transmission is driven in the pure electric drive mode, the engine and the ring gear are fixed by the brake, and the second motor outputs power to the output shaft through the planet wheel and the planet carrier through the sun gear and then transmits the power.
Optionally, when the transmission is driven in a hybrid drive mode, the brake releases the engine and the gear ring, the second motor outputs power from the planet gear and the planet carrier to the output shaft through the sun gear and then transmits the power, the engine inputs power to the planet gear and the planet carrier through the gear ring and then transmits the power through the output shaft, and meanwhile, the power of the engine is transmitted to the first motor through the driving gear and the driven gear to generate power for the first motor.
Alternatively, when the transmission generates power for the first motor alone, the second motor idles, the rotation speeds of the planet carrier and the output shaft are both 0, and the power of the engine is transmitted to the first motor from the driving gear and the driven gear to generate power for the first motor.
Optionally, the first motor is connected with a power battery, so that when the engine generates power for the first motor, the first motor charges the power battery; the power battery is connected with the second motor and provides power for the second motor.
In particular, the invention also provides a vehicle comprising the hybrid transmission described above.
The transmission of the invention uses two motors and one engine, the motors can provide power for the vehicle in a pure electric mode, and the engine can be used as a power source to provide power for the vehicle and can also be used for starting the motors, thereby charging the power battery. The invention adopts a double-motor and single-planet-wheel structure, and compared with the traditional pure electric transmission, the structure is simpler and more compact. The introduction of the double motors shortens the axial dimension, and the single planetary wheel realizes a larger transmission ratio. The motor can more accurately operate within a power range, and ultralow energy consumption is realized. The stepless speed change of the motor is realized through the planet wheel, the speed ratio range is larger, the electric quantity consumption is less, and the efficiency is higher.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
FIG. 1 is a schematic structural diagram of a hybrid transmission according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a hybrid transmission according to one embodiment of the present invention when transmitting power in an electric-only drive mode;
FIG. 3 is a schematic structural diagram of a hybrid transmission according to an embodiment of the present invention in a hybrid drive mode for power transmission;
FIG. 4 is a schematic diagram of a hybrid transmission according to one embodiment of the present invention in generating power for a first electric machine;
FIG. 5 is a schematic representation of the transmission speed ratios of the output shaft when transmitting power in the hybrid drive mode of the hybrid transmission according to one embodiment of the present invention;
FIG. 6 is a schematic representation of the transmission speed ratios of the output shaft when transmitting power in the electric-only drive mode of the hybrid transmission according to one embodiment of the present invention.
Detailed Description
Fig. 1 is a schematic structural diagram of a hybrid transmission 100 according to an embodiment of the invention. The hybrid transmission 100 of the embodiment may include the power generation mechanism 10 and the drive mechanism 20. The power generation mechanism 10 comprises an engine 11 and a first motor 12, wherein the engine 11 outputs power and drives the first motor 12 to generate power, and the power generated by the first motor 12 is used for charging a power battery. The driving mechanism 20 includes a second electric machine 21 and a planetary gear system 22, wherein the transmission 100 includes a pure electric driving mode and a hybrid driving mode, when the transmission 100 adopts the pure electric driving mode, the power battery is used as a power source alone, the power is transmitted by the second electric machine 21 from the planetary gear system 22 alone to drive the vehicle, when the transmission 100 adopts the hybrid driving mode, the power battery and the engine 11 are used together as a power source, and the power is transmitted by the second electric machine 21 and the engine 11 from the planetary gear system 22 to drive the vehicle.
The transmission 100 of the embodiment uses two motors and one engine 11, the motors can provide power for the vehicle in a pure electric mode, and the engine 11 can be used as a power source to provide power for the vehicle and can also be used for starting the motors so as to charge a power battery. The dual-motor single-planet-wheel structure is adopted in the embodiment, and compared with a traditional pure electric transmission, the structure is simpler and more compact. The introduction of the double motors shortens the axial dimension, and the single planetary wheel realizes a larger transmission ratio. The motor can more accurately operate within a power range, and ultralow energy consumption is realized. The stepless speed change of the motor is realized through the planet wheel, the speed ratio range is larger, the electric quantity consumption is less, and the efficiency is higher.
As a specific embodiment of the present invention, the power generation mechanism 10 of the present embodiment may further include an input shaft 13, a driving gear 14 and a driven gear 15, the driving gear 14 is fixedly connected to the input shaft 13, the driving gear 14 is engaged with the driven gear 15, the driven gear 15 is fixedly connected to the first electric machine 12, the engine 11 outputs power through the input shaft 13, and the power is transmitted to the first electric machine 12 through the driving gear 14 and the driven gear 15 to charge the first electric machine 12.
As a specific embodiment of the present invention, the planetary gear system 22 may include a sun gear 221, a planetary gear 222, a planet carrier 223, and a ring gear 224, the sun gear 221 is connected to a motor shaft of the second motor 21, the sun gear 221 is engaged with the planetary gear 222, and the power of the second motor 21 is transmitted through the sun gear 221, the planetary gear 222, and the planet carrier 223. The gear ring 224 is fixedly connected with the input shaft 13, the gear ring 224 is meshed with the planet gear 222, and when the engine 11 transmits power through the input shaft 13, the power of the engine 11 is transmitted by the gear ring 224, the planet gear 222 and the planet carrier 223 through the rotation of the input shaft 13. The transmission speed ratio of the embodiment is adjusted through the planetary gear system 22, no clutch is intervened at the engine 11, no gear shifting impact is generated, and the vehicle runs more stably.
As a specific embodiment of the present invention, the transmission 100 of the present embodiment may further include a brake 30, and the brake 30 is fixed to the input shaft 13 to fix or release the input shaft 13 and the ring gear 224. The brake 30 can control the transmission of the power of the engine 11. When the brake 30 fixes the input shaft 13, the power of the engine 11 cannot be output, and only the second electric machine 21 drives the vehicle in the electric-only driving mode. When the brake 30 releases the input shaft 13, the power of the engine 11 can be output to the first motor 12 to generate electricity, and the power of the engine 11 can be output to drive the vehicle to run.
As a specific embodiment of the present invention, the transmission 100 of the present embodiment may further include an output shaft 40, and the output shaft 40 is fixedly connected to the planet carrier 223, so that the power transmitted to the planet gear 222 is transmitted by the planet carrier 223 and the output shaft 40.
Specifically, the transmission 100 of the present embodiment has three power transmission paths as one specific embodiment of the present invention.
FIG. 2 is a schematic configuration diagram of a hybrid transmission according to an embodiment of the present invention when transmitting power in an electric-only drive mode. When the transmission 100 is driven in the electric-only driving mode, the brake 30 fixes the engine 11 and the ring gear 224, and the second electric machine 21 outputs power from the planetary gear 222 and the planetary gear carrier 223 to the output shaft 40 through the sun gear 221 and then transmits the power. In the specific figure, the thick line and the dotted line arrows are transmission paths, and the transmission paths are also suitable for the working conditions of reverse gear and reverse-drive power generation.
Fig. 3 is a schematic configuration diagram of a hybrid transmission according to an embodiment of the present invention when transmitting power in a hybrid drive mode. When the transmission 100 is driven in the hybrid drive mode, the brake 30 releases the engine 11 and the ring gear 224, the second electric machine 21 outputs power from the planetary gear 222 and the planetary carrier 223 to the output shaft 40 through the sun gear 221 and transmits the power, and the engine 11 inputs power to the planetary gear 222 and the planetary carrier 223 through the ring gear 224 and transmits the power from the output shaft 40. By adjusting the rotation speeds of the second motor 21 and the engine 11 within a certain range, continuously variable hybrid driving is realized. Meanwhile, the power of the engine 11 is transmitted to the first motor 12 by the driving gear 14 and the driven gear 15 to generate electricity for the first motor 12.
The transmission 100 of the embodiment can realize a pure electric drive mode in which the second motor 21 alone transmits power, and can also realize hybrid drive in which the second motor 21 and the engine 11 output power together, thereby improving the overall output torque and efficiency of the transmission 100.
Fig. 4 is a schematic structural diagram of a hybrid transmission according to an embodiment of the present invention when generating power for a first electric machine. When the transmission 100 alone generates power for the first motor 12, the second motor 21 idles, the rotation speed of the planet carrier 223 and the output shaft 40 is 0, the power of the engine 11 is transmitted to the first motor 12 from the driving gear 14 and the driven gear 15 to generate power for the first motor 12, and the vehicle with the transmission 100 can realize the function of generating power on site.
More specifically, the first motor 12 is connected to a power battery (not shown in the figure) so that the first motor 12 charges the power battery when the engine 11 generates power for the first motor 12. The power battery is connected with the second motor 21, and the power battery provides power for the second motor 21. When the engine 11 generates power for the first motor 12, the first motor 12 charges the power battery to improve the driving range of the power battery.
FIG. 5 is a schematic representation of the transmission speed ratios of the output shaft when transmitting power in the hybrid drive mode of the hybrid transmission according to one embodiment of the present invention; the thick line area between the two lines indicates the rotation speed of each component in the high-efficiency section. For example, the leftmost appearance region represents a high-efficiency rotation speed section of the second motor, the rightmost thick line region represents a high-efficiency rotation speed section of the engine, and the middle appearance region represents a rotation speed section of the output shaft.
FIG. 6 is a schematic representation of the transmission speed ratios of the output shaft when transmitting power in the electric-only drive mode of the hybrid transmission according to one embodiment of the present invention. Similarly, when power is output in the pure electric drive mode, the engine does not operate, so that only the leftmost thick line represents the high-efficiency rotation speed section of the second motor, and the middle thick line represents the output rotation speed section of the output shaft when power is output in the pure electric drive mode.
As can be seen from the above, the transmission 100 of the present embodiment has two driving modes, so that the speed ratio range is expanded, the motor and the engine are matched with each other, and the transmission can work in more optimal working ranges, thereby improving the dynamic property, the economy and the acceleration performance of the vehicle.
The present embodiment also provides, as a specific embodiment of the invention, a vehicle including the above hybrid transmission 100. The vehicle of this embodiment adopts bi-motor, single-pinion 222 structure, compares with traditional pure electric transmission, and the structure is more succinct, compact. The introduction of the double motor shortens the axial dimension, and the single-planetary wheel 222 realizes a larger transmission ratio. The motor can more accurately operate within a power range, and ultralow energy consumption is realized. The stepless speed change of the motor is realized through the planet wheel 222, the speed ratio range is larger, the electric quantity consumption is less, and the efficiency is higher.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (10)
1. A hybrid transmission, comprising:
the power generation mechanism comprises an engine and a first motor, the engine outputs power and drives the first motor to generate power, and the electric energy generated by the first motor is used for charging the power battery; and
and the driving mechanism comprises a second motor and a planetary wheel system, wherein the transmission comprises a pure electric driving mode and a hybrid driving mode, when the transmission adopts the pure electric driving mode, the power battery is used as a power source alone, power is transmitted out of the planetary wheel system through the second motor alone to drive the vehicle, when the transmission adopts the hybrid driving mode, the power battery and the engine are used as the power source together, and the second motor and the engine transmit power out of the planetary wheel system to drive the vehicle.
2. The hybrid transmission of claim 1, wherein the electric power generation mechanism further comprises an input shaft, a drive gear, and a driven gear,
the driving gear rigid coupling is in on the input shaft, the driving gear with driven gear meshes, driven gear with first motor links firmly, the engine passes through input shaft output power, and pass through the driving gear with driven gear gives power transmission first motor, for first motor charges.
3. The hybrid transmission of claim 2, wherein the planetary gear system includes a sun gear, a planet carrier, and a ring gear,
the sun gear is connected with a motor shaft of the second motor, the sun gear is meshed with the planet gear, and the power of the second motor is transmitted out through the sun gear, the planet gear and the planet carrier;
the ring gear with the input shaft links firmly, the ring gear with the planet wheel meshing, the engine passes through the input shaft rotates will the power of engine by the ring gear the planet wheel reaches the planet carrier transmits away.
4. The hybrid transmission of claim 3,
the brake is fixedly connected with the input shaft so as to fix or release the input shaft and the gear ring.
5. The hybrid transmission of claim 4,
the output shaft is fixedly connected with the planet carrier so as to transmit the power transmitted to the planet wheel out through the planet carrier and the output shaft.
6. The hybrid transmission of claim 4 or 5,
when the transmission is driven in the pure electric drive mode, the engine and the gear ring are fixed by the brake, and the second motor transmits power to the output shaft through the sun gear, the planet gear and the planet carrier.
7. The hybrid transmission of claim 4 or 5,
when the transmission is driven in a hybrid power driving mode, the brake releases the engine and the gear ring, the second motor outputs power to the planet wheel and the planet carrier through the sun gear and then transmits the power to the output shaft, the engine inputs power to the planet wheel and the planet carrier through the gear ring and then transmits the power to the output shaft, and meanwhile, the power of the engine is transmitted to the first motor through the driving gear and the driven gear to generate power for the first motor.
8. The hybrid transmission of any one of claims 3-5,
when the transmission independently generates power for the first motor, the second motor idles at the moment, the rotating speeds of the planet carrier and the output shaft are both 0, and the power of the engine is transmitted to the first motor from the driving gear and the driven gear to generate power for the first motor.
9. The hybrid transmission of any one of claims 2-5,
the first motor is connected with a power battery, so that when the engine generates power for the first motor, the first motor charges the power battery; the power battery is connected with the second motor and provides power for the second motor.
10. A vehicle characterized by comprising the hybrid transmission of any one of claims 1-9.
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| CN201910950726.4A CN110588322A (en) | 2019-10-08 | 2019-10-08 | Hybrid power transmission and vehicle |
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| CN201910950726.4A CN110588322A (en) | 2019-10-08 | 2019-10-08 | Hybrid power transmission and vehicle |
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| CN107791821A (en) * | 2017-11-06 | 2018-03-13 | 吉林大学 | Double planet wheel rows of mixing series-parallel connection bimodulus hybrid power system |
| CN108725176A (en) * | 2018-07-03 | 2018-11-02 | 陈海军 | A kind of mixed dynamic power transmission of power dividing type |
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| CN101323243A (en) * | 2008-07-24 | 2008-12-17 | 上海交通大学 | Hybrid power vehicle double electric machine double row planetary gear single clutch drive apparatus |
| AU2013291659A1 (en) * | 2012-07-17 | 2015-02-26 | Altigreen Propulsion Labs Private Limited | A dual-structured electric drive and power system for hybrid vehicles |
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Application publication date: 20191220 |