CN118494160A - Single-gear-ring double-planet-row hybrid power coupling structure and control method thereof - Google Patents
Single-gear-ring double-planet-row hybrid power coupling structure and control method thereof Download PDFInfo
- Publication number
- CN118494160A CN118494160A CN202410962391.9A CN202410962391A CN118494160A CN 118494160 A CN118494160 A CN 118494160A CN 202410962391 A CN202410962391 A CN 202410962391A CN 118494160 A CN118494160 A CN 118494160A
- Authority
- CN
- China
- Prior art keywords
- motor
- gear
- engine
- ring
- planet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000008878 coupling Effects 0.000 title claims abstract description 26
- 238000010168 coupling process Methods 0.000 title claims abstract description 26
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000005611 electricity Effects 0.000 claims description 16
- 238000011084 recovery Methods 0.000 claims description 11
- 230000007246 mechanism Effects 0.000 claims description 8
- 230000001133 acceleration Effects 0.000 claims description 7
- 239000000446 fuel Substances 0.000 claims description 7
- 238000011065 in-situ storage Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000004146 energy storage Methods 0.000 description 5
- 238000010248 power generation Methods 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Electric Propulsion And Braking For Vehicles (AREA)
- Hybrid Electric Vehicles (AREA)
Abstract
The invention provides a single gear ring double planetary row hybrid power coupling structure and a control method thereof, relates to the technical field of hybrid power, aims at the problem of higher power requirement on a driving motor in the prior hybrid power driving system, adopts a double planetary row double motor structure, shares a gear ring with a front planetary row and a rear planetary row, the sun gear of the front planetary row and the sun gear of the rear planetary row are respectively connected with a motor, the working state of the planetary row is changed when the working state is switched, the use of a brake and a clutch is reduced, the simultaneous output of two motors can be realized when the electric motor is driven purely, the output power in the pure electric driving state is improved, and the power requirement on the motor is reduced.
Description
Technical Field
The invention relates to the technical field of mixing, in particular to a single gear ring double planetary gear train hybrid power coupling structure and a control method thereof.
Background
The key system of the hybrid electric vehicle is a hybrid power system, the existing double-motor hybrid power system usually distinguishes between a generator and a driving motor, the generator is only used for generating electricity and supplying power to a vehicle power battery, the vehicle is not driven, the pure electric driving state is only used for driving by a single motor, and the power requirement on the driving motor is high.
In China patent (publication No. CN 110077219B), a double-planet-row hybrid power system and a control method are disclosed, a front row gear ring of a front planet row is connected with a rear planet carrier of a rear planet row, the output end of a first motor is connected with a front row sun gear of the front planet row, the output end of a second motor is connected with a rear row sun gear of the rear planet row, a flywheel assembly is arranged, the flywheel assembly is connected with the front row gear ring through a second mode clutch, a double-planet row and a flywheel energy storage system is added, a physical energy storage effect is realized, the engine can work for a long time and high efficiency, and the power of the first motor and the second motor can be properly reduced; the power split device adopts a mutually independent double-gear-ring structure, realizes power split through the clutch, needs to additionally arrange a plurality of brakes and clutches, leads to a more complex structure and higher cost, adopts double motors which are still an ISG motor for generating power and a TM motor for driving, only a single motor is used for driving in a pure electric driving state, and still has the problem of higher power requirement on a driving motor.
Disclosure of Invention
The invention aims at overcoming the defects existing in the prior art, and provides a single gear ring double planetary row hybrid power coupling structure and a control method thereof, which adopts a double planetary row double motor structure, a first planetary row and a second planetary row share a gear ring, a sun gear of the first planetary row and a sun gear of the second planetary row are respectively connected with a motor, the planetary gear set is realized by changing the working state of the planetary gear set when the working state is switched, so that the use of a brake and a clutch is reduced, the simultaneous output of two motors can be realized when the planetary gear set is driven purely, the output power in the pure electric driving state is improved, and the power requirement on the motors is reduced.
The first object of the invention is to provide a single gear ring double planetary gear row hybrid power coupling structure, which adopts the following scheme:
The device comprises an engine, a first planetary gear, a second planetary gear, a first motor and a second motor, wherein the first planetary gear comprises a first sun gear, a first planet carrier and a gear ring, the second planetary gear comprises a second sun gear, a second planet carrier and a gear ring, and the first planetary gear and the second planetary gear share the same gear ring; the output end of the engine is connected with the first planet carrier through the input shaft, the input and output end of the first motor is connected with the first sun gear, the input and output end of the second motor is connected with the second sun gear, and the second planet carrier is connected with the output shaft.
Further, a first inner gear ring is arranged at one end of the gear ring, a second inner gear ring is arranged at the other end of the gear ring, the first planet wheel is meshed with the first inner gear ring, and the second planet wheel is meshed with the second inner gear ring.
Further, the perpendicular bisector of the axial midpoint of the gear ring is taken as a reference plane, the first inner gear ring and the second inner gear ring are symmetrically distributed relative to the reference plane, and the first inner gear ring and the second inner gear ring synchronously rotate.
Further, the first motor and the second motor are both generator motors.
Further, a torsional vibration damper is connected between the input shaft and the output end of the engine, and the output shaft is connected with the wheel end through a differential mechanism.
A second object of the present invention is to provide a control method of a single-ring gear double-planetary-row hybrid power coupling structure, which is applied to the single-ring gear double-planetary-row hybrid power coupling structure as described in the first object, including:
when in-situ charging, the engine participates in working, and drives the first motor and the second motor to generate power respectively, and the generated power is stored in the power battery;
when the engine runs purely, the engine does not participate in the work, and the first motor and/or the second motor work to drive the output shaft to output;
When the hybrid operation is performed, the engine participates in the operation, the engine divides the power to the first motor to generate electricity and the output shaft to output, and the second motor works and cooperates with the motor to drive the output shaft.
Further, when the direct drive is operated, the engine independently works to drive the output shaft to output, and the first motor and the second motor do not work;
When the hybrid operation is performed, the engine participates in the work, and the engine, the first motor and the second motor work cooperatively to jointly drive the output shaft;
when energy is recovered, the engine does not participate in work, the output shaft reversely drags the second motor to generate electricity, and the generated electricity can be stored in the power battery.
Further, when the vehicle speed is not zero and is lower than the first set speed, acquiring a vehicle running state;
If the vehicle is in an acceleration state, the first motor and the second motor work cooperatively to drive the output shaft;
if the vehicle is in a uniform speed state, the first motor or the second motor works to drive the output shaft;
if the vehicle is in a decelerating state, energy recovery is performed.
Further, when the vehicle speed is not lower than the first set speed and not higher than the second set speed, the series-parallel operation is executed, the engine participates in the work and is in the working condition meeting the set fuel economy, the output shaft is driven to operate, and the second motor is used as auxiliary power to assist in driving the output shaft to operate.
Further, when the vehicle speed is higher than the second set speed, the vehicle running state is acquired,
If the vehicle is in an acceleration state, executing hybrid operation, and driving an output shaft by the cooperation of the engine, the first motor and the second motor;
If the vehicle is in a uniform speed state, executing direct drive operation, and driving an output shaft by engine operation;
if the vehicle is in a decelerating state, energy recovery is performed.
Compared with the prior art, the invention has the advantages and positive effects that:
(1) The novel double-planetary-gear-row hybrid power drive system aims at the problem that the power requirement on a drive motor in the existing hybrid power drive system is high, a double-planetary-row double-motor structure is adopted, a front planetary row and a rear planetary row share a gear ring, a sun gear of the front planetary row and a sun gear of the rear planetary row are respectively connected with a motor, the working states of the planetary rows are changed when the working states are switched, the use of a brake and a clutch is reduced, the simultaneous output of the double motors can be realized when the novel double-planetary-gear-row hybrid power drive system is purely electric drive, the output power in the purely electric drive state is improved, and the power requirement on the motors is reduced.
(2) The characteristics of the engine and the motor are fully utilized, the symmetrical structure arrangement of the single gear ring and the double planetary gear rows and the double motors is adopted, the double motors can be utilized to realize driving and power generation, the double motors can be driven simultaneously or respectively according to the requirements, the series-parallel operation or the mixed operation is realized, and the flexibility of the hybrid power output is improved.
(3) By utilizing the operation of the double motors and the engine, when the vehicle speed is relatively high, the engine can be kept under the working condition of better fuel economy, the change of the vehicle speed can be realized through motor auxiliary driving, the operation oil consumption of the engine is reduced, and the operation power of the vehicle is ensured.
(4) The combination of the different modes and states of the three input ends of the engine, the first motor and the second motor can generate a plurality of different working modes, the first motor and the second motor can generate power and drive and output, the pure electric double-motor output mode is high in power utilization rate and good in acceleration performance, meanwhile, the design requirement of the motors is reduced, the layout of a transmission device is optimized, the motors with the same configuration can be adopted for the two motors, the batch purchase cost is effectively reduced, the first motor can replace a starting motor to be used for starting the engine, the structure is simplified, the cost is reduced, the engine can be directly driven, the power is directly output, the transmission efficiency is high, and the optimal performance and oil consumption can be achieved for driving the vehicle.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
Fig. 1 is a schematic diagram of a single-ring-gear double-planetary-row hybrid power coupling structure in embodiments 1 and 2 of the present invention.
Fig. 2 is a schematic diagram of the power supply at the time of in-situ charging in examples 1 and 2 of the present invention.
Fig. 3 is a schematic diagram of the power supply in the pure electric operation in embodiments 1 and 2 of the present invention.
Fig. 4 is a schematic diagram of the power supply during series-parallel operation in embodiments 1 and 2 of the present invention.
Fig. 5 is a schematic diagram of the power supply in the direct drive operation in embodiments 1 and 2 of the present invention.
Fig. 6 is a schematic diagram of power supply at the time of energy recovery in examples 1 and 2 of the present invention.
Wherein, 1, an engine, 2, a torsional vibration damper, 3, an input shaft, 4, a first motor, 5, a first sun gear, 6, a first planet gear, 7, a first planet carrier, 8, ring gear, 9, second planet carrier, 10, second planet gears, 11, second sun gear, 12, second electric machine, 13, output shaft, 14, differential, 15, wheel end.
Detailed Description
Example 1
In an exemplary embodiment of the present invention, a single ring gear double planetary row hybrid power coupling configuration is provided, as shown in fig. 1-6.
In the existing double-motor hybrid power system, physical energy storage is realized by adding a flywheel energy storage system, so that the power of the double motors is reduced, but after the flywheel energy storage system is added, a clutch and a brake which are matched with the flywheel are required to be additionally arranged, the complexity of the structure is increased, and the adopted double motors still cannot realize double-motor power generation and double-motor driving, so that the motors are difficult to effectively utilize, and the power requirement on the driving motor is still higher. Based on this, the present embodiment provides a single-gear-ring double-planetary-row double-motor hybrid power system driving device, which adopts a single-gear-ring double-planetary-row double-motor structure, and the engine 1 can drive the double motors to charge simultaneously, and the double motors can drive the output shafts 13 simultaneously or respectively to provide driving force, so as to improve the output power in a pure electric driving state, and reduce the requirement for motor power.
As shown in fig. 1, a single-gear-ring double-planetary-row hybrid power coupling structure comprises an engine 1, a first planetary row, a second planetary row, a first motor 4 and a second motor 12, wherein the engine 1 and the first motor 4 and the second motor 12 work cooperatively to realize switching of various running states.
The first planet row comprises a first sun gear 5, a first planet gear 6, a first planet carrier 7 and a gear ring 8, wherein the first planet gear 6 is rotatably arranged on the first planet carrier 7, the first sun gear 5 and an inner gear ring of the gear ring 8 are coaxially distributed, one side of the first planet gear 6 is meshed with the inner gear ring part of the gear ring 8, the other side of the first planet gear 6 is meshed with the first sun gear 5, and a shaft body of the first planet carrier 7 and the gear ring 8 are coaxially distributed; the second planet row comprises a second sun gear 11, a second planet gear 10, a second planet carrier 9 and a gear ring 8, the second planet gear 10 is rotatably arranged on the second planet carrier 9, the second sun gear 11 and an inner gear ring of the gear ring 8 are coaxially distributed, one side of the second planet gear 10 is meshed with the inner gear ring part of the gear ring 8, the other side of the second planet gear 10 is meshed with the second sun gear 11, and a shaft body of the second planet carrier 9 and the gear ring 8 are coaxially distributed. In the present embodiment, the first planetary gear row and the second planetary gear row share the same ring gear 8, and are engaged at different positions of the ring gear 8.
The output end of the engine 1 is connected with the first planet carrier 7 through the input shaft 3, the input and output end of the first motor 4 is connected with the first sun gear 5, the input and output end of the second motor 12 is connected with the second sun gear 11, the second planet carrier 9 is connected with the output shaft 13, and the output shaft 13 can be connected with the wheel end 15 to provide power for the wheel end 15.
The first planet row and the second planet row share the same gear ring 8, a first inner gear ring is arranged at one end of the gear ring 8, a second inner gear ring is arranged at the other end of the gear ring, the first planet wheel 6 is meshed with the first inner gear ring, the second planet wheel 10 is meshed with the second inner gear ring, and other components except the gear ring 8 are isolated from other components except the gear ring 8.
Specifically, the perpendicular bisector of the axial midpoint of the ring gear 8 is used as a reference plane, the first ring gear and the second ring gear are symmetrically distributed relative to the reference plane, and the first ring gear and the second ring gear synchronously rotate. After the first inner gear ring and the second inner gear ring are symmetrically distributed, the matched planet gears, the planet carrier and the sun gear are also positioned at corresponding positions.
The first motor 4 and the second motor 12 are both generating motors, so that the requirements of the output torque driving the output shaft 13 during motor auxiliary driving can be met, and the generating requirements during kinetic energy recovery and engine 1 driving can be met. As shown in fig. 2,4 and 6, the first motor 4 and the second motor 12 transmit the electric energy generated by the generation to the power battery for storage, and as shown in fig. 3 and 5, when the first motor 4 and the second motor 12 work externally to output torque, the power is taken from the power battery.
The first motor 4 and the second motor 12 can be permanent magnet synchronous motors, which can be used as motors to convert electric energy into mechanical energy, and can also be used as generators to convert mechanical energy into electric energy; in other alternative embodiments, other forms of motors may be employed as the first motor 4 and the second motor 12. The first motor 4 can replace a starting motor for starting the engine 1, so that the structure is simplified, and the cost is reduced.
A torsional vibration damper 2 is connected between the input shaft 3 and the output end of the engine 1, and the output shaft 13 is connected to a wheel end 15 through a differential 14. The torsional vibration damper 2 is mainly composed of an elastic element, a damping element, and the like, and reduces the torsional vibration natural frequency of the drive train by reducing the torsional rigidity of the joint portion of the crankshaft of the engine 1 and the drive train. The resonance phenomenon generated in the running process of the transmission system is reduced, and the stability and smoothness of transmission are improved. Torsional damping of the driveline is increased, and amplitude due to torsional resonance is suppressed. When the automobile turns, the differential mechanism 14 enables the left wheel and the right wheel to roll at different rotation speeds, so that pure rolling motion of the driving wheels at two sides is ensured, and the slipping of tires and the ground is avoided.
The characteristics of the engine 1 and the motor are fully utilized, the symmetrical structure arrangement of the single gear ring and the double planetary gear rows is adopted, the double motors can be utilized to realize driving and power generation, the double motors can be driven simultaneously or respectively according to the requirements, the series-parallel operation or the mixed operation is realized, and the flexibility of the hybrid power output is improved.
Example 2
In another exemplary embodiment of the present invention, as shown in fig. 1 to 6, a control method of a single ring gear double planetary gear hybrid coupling structure is provided, using a single ring gear double planetary gear hybrid coupling structure as in embodiment 1.
Comprising the following steps:
In the in-situ charging, as shown in fig. 2, the engine 1 participates in the operation, and the engine 1 drives the first motor 4 and the second motor 12 to generate power respectively and stores the generated power in the power battery;
In pure electric operation, as shown in fig. 3, the engine 1 does not participate in the operation, the first motor 4 and/or the second motor 12 operate, and the output shaft 13 is driven to output;
in the hybrid operation, as shown in fig. 4, the engine 1 is engaged in the operation, the engine 1 splits power to the first motor 4 to generate electricity and the output shaft 13 to output, and the second motor 12 is operated and drives the output shaft 13 in cooperation with the motor;
In the direct drive operation, as shown in fig. 5, the engine 1 works independently to drive the output shaft 13 to output, and the first motor 4 and the second motor 12 do not work;
During the hybrid operation, the engine 1 participates in the operation, and the engine 1, the first motor 4 and the second motor 12 work cooperatively to jointly drive the output shaft 13;
When energy is recovered, as shown in fig. 6, the engine 1 does not participate in operation, the output shaft 13 reversely drags the second electric motor 12 to generate electricity, and the generated electricity is stored in the power battery.
The control method of the single-gear-ring double-planet-row hybrid power coupling structure comprises the steps of controlling the single-gear-ring double-planet-row hybrid power coupling structure to execute a plurality of working modes, and correspondingly realizing an in-situ charging mode, a pure electric mode, a series-parallel mode, a direct drive mode, a hybrid mode and an energy recovery mode.
After the power reaches the output shaft 13, it is distributed to the wheel ends 15 via the differential 14.
As shown in fig. 2, when the power battery is low, the in-situ charging mode may be switched to perform in-situ charging, and the engine 1 drives the first motor 4 and the second motor 12 to operate to generate electricity, and stores the electric energy in the power battery.
The pure electric mode may be further divided into a single-motor pure electric mode and a dual-motor pure electric mode according to the operation state of the first motor 4 or the second motor 12, in combination with fig. 1 and 3.
When the single-motor pure electric mode is adopted, the engine 1 and the first motor 4 do not work, and the second motor 12 drives the output shaft 13 for driving the vehicle; alternatively, the engine 1 and the second motor 12 are not operated, and the first motor 4 drives the output shaft 13 to drive the vehicle.
When the double-motor pure electric mode is adopted, as shown in fig. 3, the engine 1 does not work, the input shaft 3 and the first planet carrier 7 connected with the input shaft 3 are locked, the first motor 4 drives the gear ring 8 to move through the first sun gear 5, so as to drive the second planet gears 10 to move, meanwhile, the second motor 12 drives the second planet gears 10 to move through the second sun gear 11, and the first motor 4 and the second planet carrier 9 drive the output shaft 13 to move together to drive the vehicle.
Specifically, when the pure electric mode is adopted, the working states of the first motor 4 and the second motor 12 can be adjusted according to the motion state of the vehicle, including:
When the vehicle speed is not zero and is lower than the first set speed, acquiring a vehicle running state;
If the vehicle is in an accelerating state, a double-motor pure electric mode is executed, the first motor 4 and the second motor 12 work cooperatively to drive the output shaft 13; the double motors are operated to improve the driving torque, the rotating speed of the output shaft 13 can be changed by changing the torque and the rotating speed of the two motors, the operation is convenient, the double motors are adopted to output the torque outwards in the starting or accelerating state of the vehicle, the explosive force is strong, the power utilization rate of the motors is high, the accelerating performance is good, and meanwhile, the power design requirement of the motors is reduced so as to reduce the cost;
If the vehicle is in a uniform speed state, executing a single-motor pure electric mode, then the first motor 4 or the second motor 12 works to drive the output shaft 13; in a low-speed uniform-speed pure electric state of the vehicle, the required torque is relatively low, and the single motor driving can meet the working condition requirement, so that the electric energy loss is effectively reduced;
if the vehicle is in a decelerating state, energy recovery is performed.
As shown in fig. 4, when the vehicle speed is not lower than the first set speed and not higher than the second set speed, the series-parallel mode is adopted to execute the series-parallel operation, the engine 1 participates in the operation and is in the working condition meeting the set fuel economy, the output shaft 13 is driven to operate, the second motor 12 is used as auxiliary power, the torque from the engine 1 is coupled and then transmitted to the output shaft 13, and the output shaft 13 is driven to operate.
Specifically, the engine 1 is started and is in an optimal working state, a part of torque is transmitted to the first motor 4 through the output shaft 13, the first planet carrier 7, the first planet gears 6 and the first sun gear 5 to generate electricity, the other part of torque is transmitted to the output shaft 13 through the output shaft 13, the first planet carrier 7, the first planet gears 6, the gear ring 8, the second planet gears 10 and the second planet carrier 9, and is distributed to the wheel end 15 through the differential mechanism 14, the torque of the second motor 12 is transmitted to the second planet carrier 9 through the second sun gear 11 and the second planet gears 10 connected with the torque, and is coupled with the torque transmitted by the engine 1 and then is transmitted to the output shaft 13 to be output, and the overall torque is improved through the series-parallel operation, so that the engine 1 is ensured to be in the optimal working state, and oil saving is realized.
As shown in fig. 5 and 6, when the speed of the vehicle reaches a speed interval where the fuel economy of the engine 1 is high, the fuel economy and torque output of the engine 1 can be ensured by executing the direct drive mode or the hybrid mode by the engine 1.
When the vehicle speed is higher than the second set speed, the vehicle running state is acquired,
If the vehicle is in an acceleration state, switching to a hybrid mode, executing hybrid operation, and enabling the engine 1, the first motor 4 and the second motor 12 to work cooperatively to drive the output shaft 13; torque is transmitted to an output shaft 13 through an output shaft 13, a first planet carrier 7, a first planet wheel 6, a gear ring 8, a second planet wheel 10 and a second planet carrier 9, is distributed to a wheel end 15 through a differential mechanism 14, torque output by a first motor 4 is transmitted to the second planet carrier 9 through a first sun wheel 5, the first planet wheel 6 and the gear ring 8 connected with the torque, torque of a second motor 12 is transmitted to the second planet carrier 9 through a second sun wheel 11 and a second planet wheel 10 connected with the torque, and is transmitted to the output shaft 13 for output after being coupled with torque transmitted by the first motor 4, and is distributed to the wheel end 15 through the differential mechanism 14; the first motor 4 and the second motor 12 operate to output torque, and serve as auxiliary power, so that the torque of the output shaft 13 is improved, and sufficient power is provided for high-speed overtaking of the vehicle;
if the vehicle is in a constant speed state, switching to a direct drive mode, executing direct drive operation, and operating the engine 1 to drive the output shaft 13; torque is transmitted to the output shaft 13 through the output shaft 13, the first planet carrier 7, the first planet gears 6, the gear ring 8, the second planet gears 10 and the second planet carrier 9, is distributed to the wheel end 15 through the differential mechanism 14, the first motor 4 and the second motor 12 idle, the torque of the engine 1 is directly transmitted to the output shaft 13, and is distributed to the wheel end 15 through the differential mechanism 14; in a high-speed running state of the vehicle, the engine 1 is high in direct drive transmission efficiency and high in fuel economy;
if the vehicle is in a decelerating state, the vehicle is switched to an energy recovery mode, and energy recovery is performed.
As shown in fig. 6, during deceleration of the vehicle, when the state of charge of the battery of the vehicle does not exceed the upper limit of the state of charge of the battery, the vehicle enters an energy recovery mode, torque is transmitted from the wheel end 15, the differential 14, the output shaft 13, the second planet carrier 9, the second planet wheel 10 and the second sun wheel 11 to the second motor 12, at this time, the second motor 12 generates electricity, on the one hand, the second motor 12 generates electricity and supplies the electricity to the power battery for storage, and on the other hand, the second motor 12 can provide braking force to decelerate the vehicle.
In the emergency braking situation, a part of the torque is transmitted from the wheel end 15, the differential gear 14, the output shaft 13, the second planet carrier 9, the second planet wheel 10 and the second sun wheel 11 to the second motor 12, and the other part of the torque is transmitted from the wheel end 15, the differential gear 14, the output shaft 13, the second planet carrier 9, the second planet wheel 10, the gear ring 8, the first planet wheel 6 and the first sun wheel 5 to the first motor 4, and at the moment, the first motor 4 and the second motor 12 simultaneously generate electricity, recover energy and provide larger braking force, so that the vehicle is rapidly decelerated.
It can be understood that the first set speed and the second set speed in this embodiment may be selected and adjusted according to the requirement, the value of the second set speed is greater than the value of the first set speed, the first set speed may be 40km/h, 50km/h, etc., and the second set speed may be 90km/h, 100km/h, etc.
The combination of the different modes and states of the three input ends of the engine 1, the first motor 4 and the second motor 12 can generate a plurality of different working modes, the first motor 4 and the second motor 12 can generate power and drive and output, the pure electric double-motor output mode has high power utilization rate and good acceleration performance, meanwhile, the design requirement of the motors is reduced, the layout of a transmission device is optimized, the motors with the same configuration can be adopted by the two motors, the batch purchase cost is effectively reduced, the first motor 4 can replace a starting motor to be used for starting the engine 1, the structure is simplified, the cost is reduced, the engine 1 can be directly driven, the power is directly output, the transmission efficiency is high, and the optimal performance and the oil consumption can be achieved to drive the vehicle.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The single-gear-ring double-planet-row hybrid power coupling structure is characterized by comprising an engine, a first planet row, a second planet row, a first motor and a second motor, wherein the first planet row comprises a first sun gear, a first planet wheel, a first planet carrier and a gear ring, the second planet row comprises a second sun gear, a second planet wheel, a second planet carrier and a gear ring, and the first planet row and the second planet row share the same gear ring; the output end of the engine is connected with the first planet carrier through the input shaft, the input and output end of the first motor is connected with the first sun gear, the input and output end of the second motor is connected with the second sun gear, and the second planet carrier is connected with the output shaft.
2. The single-gear-ring double-planet-row hybrid power coupling structure according to claim 1, wherein a first inner gear ring is arranged at one end of the gear ring, a second inner gear ring is arranged at the other end of the gear ring, the first planet gears are meshed with the first inner gear ring, and the second planet gears are meshed with the second inner gear ring.
3. The single-ring gear double-planet-row hybrid power coupling structure according to claim 2, wherein a perpendicular bisector of an axial midpoint of the ring gear is used as a reference plane, the first ring gear and the second ring gear are symmetrically distributed relative to the reference plane, and the first ring gear and the second ring gear synchronously rotate.
4. The single ring gear double planetary row hybrid power coupling structure of claim 1, wherein the first motor and the second motor are both generator motors.
5. The single-ring gear double-planet-row hybrid power coupling structure according to claim 1, wherein a torsional damper is connected between the input shaft and the output end of the engine, and the output shaft is connected with the wheel end through a differential mechanism.
6. A control method of a single-gear-ring double-planetary-row hybrid power coupling structure, applied to the single-gear-ring double-planetary-row hybrid power coupling structure as claimed in any one of claims 1 to 5, characterized by comprising:
when in-situ charging, the engine participates in working, and drives the first motor and the second motor to generate power respectively, and the generated power is stored in the power battery;
when the engine runs purely, the engine does not participate in the work, and the first motor and/or the second motor work to drive the output shaft to output;
When the hybrid operation is performed, the engine participates in the operation, the engine divides the power to the first motor to generate electricity and the output shaft to output, and the second motor works and cooperates with the motor to drive the output shaft.
7. The control method of the single-gear-ring double-planetary-row hybrid power coupling structure according to claim 6, wherein when the direct-drive engine is operated, the engine works independently to drive the output shaft to output, and the first motor and the second motor do not work;
When the hybrid operation is performed, the engine participates in the work, and the engine, the first motor and the second motor work cooperatively to jointly drive the output shaft;
when energy is recovered, the engine does not participate in work, the output shaft reversely drags the second motor to generate electricity, and the generated electricity can be stored in the power battery.
8. The control method of a single ring gear double planetary gear set hybrid power coupling structure according to claim 7, wherein the vehicle running state is obtained when the vehicle speed is not zero and is lower than a first set speed;
If the vehicle is in an acceleration state, the first motor and the second motor work cooperatively to drive the output shaft;
if the vehicle is in a uniform speed state, the first motor or the second motor works to drive the output shaft;
if the vehicle is in a decelerating state, energy recovery is performed.
9. The control method of the single-ring gear double-planetary-row hybrid power coupling structure according to claim 7, wherein when the vehicle speed is not lower than a first set speed and not higher than a second set speed, series-parallel operation is performed, the engine participates in the operation and is in a working condition meeting the set fuel economy, the output shaft is driven to operate, and the second motor serves as auxiliary power to assist in driving the output shaft to operate.
10. The control method of the single ring gear double planetary gear set hybrid coupling structure according to claim 7, wherein the vehicle running state is obtained when the vehicle speed is higher than the second set speed,
If the vehicle is in an acceleration state, executing hybrid operation, and driving an output shaft by the cooperation of the engine, the first motor and the second motor;
If the vehicle is in a uniform speed state, executing direct drive operation, and driving an output shaft by engine operation;
if the vehicle is in a decelerating state, energy recovery is performed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410962391.9A CN118494160A (en) | 2024-07-18 | 2024-07-18 | Single-gear-ring double-planet-row hybrid power coupling structure and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410962391.9A CN118494160A (en) | 2024-07-18 | 2024-07-18 | Single-gear-ring double-planet-row hybrid power coupling structure and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118494160A true CN118494160A (en) | 2024-08-16 |
Family
ID=92241379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410962391.9A Pending CN118494160A (en) | 2024-07-18 | 2024-07-18 | Single-gear-ring double-planet-row hybrid power coupling structure and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118494160A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101323242A (en) * | 2008-07-24 | 2008-12-17 | 上海交通大学 | Hybrid power vehicle double row planetary gear electromechanical coupling driving mechanism |
| CN201856622U (en) * | 2010-01-17 | 2011-06-08 | 王少辉 | Dynamic coupling mechanism assembly capable of being applied to hybrid electric vehicle |
| CN108407599A (en) * | 2017-10-24 | 2018-08-17 | 广西玉柴机器股份有限公司 | A kind of hybrid power system with limp-home module |
| CN112356654A (en) * | 2020-12-08 | 2021-02-12 | 芜湖皖江知识产权运营中心有限公司 | Dual-motor hybrid power driving system and using method thereof |
| CN213354167U (en) * | 2020-10-10 | 2021-06-04 | 无锡明恒混合动力技术有限公司 | Double-hybrid power driving structure |
| CN116872712A (en) * | 2023-06-20 | 2023-10-13 | 浙江吉利控股集团有限公司 | Hybrid power system, driving control method and vehicle |
| CN117656814A (en) * | 2023-12-12 | 2024-03-08 | 中国地质大学（武汉） | Dual-mode hybrid power transmission device |
-
2024
- 2024-07-18 CN CN202410962391.9A patent/CN118494160A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101323242A (en) * | 2008-07-24 | 2008-12-17 | 上海交通大学 | Hybrid power vehicle double row planetary gear electromechanical coupling driving mechanism |
| CN201856622U (en) * | 2010-01-17 | 2011-06-08 | 王少辉 | Dynamic coupling mechanism assembly capable of being applied to hybrid electric vehicle |
| CN108407599A (en) * | 2017-10-24 | 2018-08-17 | 广西玉柴机器股份有限公司 | A kind of hybrid power system with limp-home module |
| CN213354167U (en) * | 2020-10-10 | 2021-06-04 | 无锡明恒混合动力技术有限公司 | Double-hybrid power driving structure |
| CN112356654A (en) * | 2020-12-08 | 2021-02-12 | 芜湖皖江知识产权运营中心有限公司 | Dual-motor hybrid power driving system and using method thereof |
| CN116872712A (en) * | 2023-06-20 | 2023-10-13 | 浙江吉利控股集团有限公司 | Hybrid power system, driving control method and vehicle |
| CN117656814A (en) * | 2023-12-12 | 2024-03-08 | 中国地质大学（武汉） | Dual-mode hybrid power transmission device |
Non-Patent Citations (1)
| Title |
|---|
| 辛喆: "《汽车拖拉机发动机原理 第3版》", 31 January 2022, 中国农业大学出版社, pages: 301 - 304 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109130830B (en) | Transmission and power system for hybrid vehicle | |
| CN104175860B (en) | Planetary series-parallel power system and vehicle adopting same | |
| US11391348B2 (en) | Transmission and power system for use in hybrid vehicle | |
| CN107599823B (en) | Differential multimode hybrid vehicle drive system | |
| CN108909433B (en) | Powertrain for hybrid vehicle | |
| CN102514479B (en) | Range extended electric vehicle power system | |
| CN110385977B (en) | Double-planet-row double-mode hybrid electric vehicle driving system configuration and vehicle | |
| CN106627097A (en) | Double-planetary row dual-mode power split type hybrid system | |
| CN107444098B (en) | Series-parallel hybrid power transmission device for passenger car | |
| CN207809039U (en) | Hybrid electric drive system and vehicle | |
| CN108569129B (en) | Hybrid power system and vehicle using same | |
| CN211166416U (en) | Double-planet-row series-parallel power coupling mechanism | |
| CN207670178U (en) | Differential multimodal fusion power car drive system | |
| CN111688470A (en) | Series-parallel configuration plug-in hybrid power system and control method thereof | |
| CN109114198A (en) | Three shift transmissions of hybrid vehicle | |
| CN111976461B (en) | Differential coupling hybrid power assembly | |
| CN118494160A (en) | Single-gear-ring double-planet-row hybrid power coupling structure and control method thereof | |
| CN111114279B (en) | Hybrid power driving system and vehicle | |
| CN115339310A (en) | Automobile shunting type hybrid power mechanism | |
| CN113400919A (en) | Multi-mode power split hybrid electric vehicle driving system and vehicle | |
| CN109955708B (en) | Dual-mode planetary gear hybrid power system and vehicle | |
| CN108032724B (en) | Double-planetary-gear-system type automobile hybrid power system | |
| CN219257057U (en) | Series-parallel power system and vehicle | |
| CN219133842U (en) | Hybrid power system and vehicle | |
| CN109795306B (en) | Power transmission device for hybrid electric vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |