CN109130831B - A vehicle multi-mode hybrid power coupling device - Google Patents
A vehicle multi-mode hybrid power coupling device Download PDFInfo
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- CN109130831B CN109130831B CN201811041103.7A CN201811041103A CN109130831B CN 109130831 B CN109130831 B CN 109130831B CN 201811041103 A CN201811041103 A CN 201811041103A CN 109130831 B CN109130831 B CN 109130831B
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- 238000000034 method Methods 0.000 claims 1
- 230000001133 acceleration Effects 0.000 abstract description 5
- 238000011084 recovery Methods 0.000 description 11
- 230000005540 biological transmission Effects 0.000 description 7
- 239000000446 fuel Substances 0.000 description 4
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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
- 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 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 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 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 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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Abstract
本发明公开一种系统效率均衡、加速性能好的汽车多模混合动力耦合装置，其包括内燃机(1)、第一、二电动机/发电机(2、3)、输出轴(4)、第一、二行星齿轮系(5、6)、齿轮(7)、制动器Ⅰ、Ⅱ(8、9)和离合器(10)，第一行星齿轮系(5)一端与制动器Ⅰ(8)和内燃机(1)固定连接，另一端与第二行星齿轮系(6)固定连接，第二行星齿轮系(6)一端与制动器Ⅱ(9)固定连接，另一端与齿轮(7)固定连接，第一行星齿轮系(5)还通过离合器(10)与第二行星齿轮系(6)连接，第一电动机/发电机(2)的输出轴与第一行星齿轮系(5)固定连接，第二电动机/发电机(3)的输出轴与第二行星齿轮系(6)固定连接。
The invention discloses an automobile multi-mode hybrid power coupling device with balanced system efficiency and good acceleration performance, which comprises an internal combustion engine (1), first and second electric motors/generators (2, 3), an output shaft (4), a first , two planetary gear trains (5, 6), gears (7), brakes I, II (8, 9) and clutch (10), one end of the first planetary gear train (5) is connected with brake I (8) and internal combustion engine (1) ) is fixedly connected, the other end is fixedly connected with the second planetary gear train (6), one end of the second planetary gear train (6) is fixedly connected with the brake II (9), the other end is fixedly connected with the gear (7), the first planetary gear The train (5) is also connected with the second planetary gear train (6) through the clutch (10), the output shaft of the first motor/generator (2) is fixedly connected with the first planetary gear train (5), and the second motor/generator The output shaft of the machine (3) is fixedly connected with the second planetary gear train (6).
Description
Technical Field
The invention belongs to the technical field of power transmission of hybrid electric vehicles, and particularly relates to a multimode hybrid power coupling device which has balanced system efficiency and good acceleration performance under multi-working condition and is suitable for a plug-in hybrid electric vehicle.
Background
In recent years, with the attention on energy conservation and environmental protection all over the world, the energy conservation and environmental protection technology of vehicles gradually draws attention, and all regulations are increasingly strict, so that various new energy vehicles come into operation, and the more prominent ones are pure electric vehicles and hybrid electric vehicles. However, the existing pure electric vehicles have the problems of insufficient cruising ability, slow charging speed and the like which are not negligible, and meanwhile, the pure electric vehicles on the market are generally higher in selling price, and even government subsidies are difficult to be rapidly accepted by consumers. The hybrid electric vehicle effectively improves the fuel economy through the coordinated work of the two power sources, well controls the cost, has little difference from the traditional internal combustion engine vehicle in driving experience, and has great advantages in the new energy vehicle market.
The hybrid electric vehicle has the advantages that the development is rapid in recent years, the products of the hybrid electric vehicle are increased explosively, the market share of the hybrid electric vehicle is high at present, the hybrid electric vehicle is suitable for several families such as Honda, Toyota and general hybrid electric vehicles, and most of vehicle types adopt the planetary gear row as a power coupling structure. Toyota, as a leading sheep in the hybrid electric vehicle industry, has the earliest practical application of the hybrid electric technology, and the flag-under oil-electric hybrid electric vehicle Puruisi is very representative. This model currently uses a double planetary row structure to couple the engine, generator, motor and vehicle output shaft together. The level of general automobile companies in the hybrid power industry is the first lead, corresponding double-planet-row hybrid power automobiles are provided, and meanwhile, two clutches are added to the system, so that two different power splitting working modes can be realized.
However, under the push of policy, the plug-in hybrid vehicle is becoming the leading force for future development, and the hybrid system does not have a pure electric driving mode, so that it is difficult to apply the plug-in hybrid vehicle. If the power split driving mode is still used in the high-speed cruise mode, the secondary energy conversion between the mechanical energy and the electric energy brings about no small loss, and the energy utilization rate is low.
In summary, the prior art has the following problems: the system efficiency of the hybrid electric vehicle is unbalanced under the multi-working condition, and the acceleration performance is poor.
Disclosure of Invention
The invention aims to provide an automobile multimode hybrid power coupling device which is balanced in system efficiency and good in acceleration performance under the multi-working-condition.
The technical solution for realizing the purpose of the invention is as follows:
a multimode hybrid power coupling device of an automobile comprises an internal combustion engine 1, a first motor/generator 2, a second motor/generator 3, an output shaft 4, a first planetary gear train 5, a second planetary gear train 6, a gear 7, a brake I8, a brake II 9 and a clutch 10,
one end of the first planetary gear train 5 is fixedly connected with a brake I8 and the internal combustion engine 1, the other end is fixedly connected with a second planetary gear train 6,
one end of the second planetary gear train 6 is fixedly connected with a brake II 9, the other end is fixedly connected with a gear 7,
the first planetary gear 5 is also connected to the second planetary gear 6 via a clutch 10,
the output shaft of the first motor/generator 2 is fixedly connected to a first planetary gear train 5, the output shaft of the second motor/generator 3 is fixedly connected to a second planetary gear train 6,
the gear 7 is fixedly connected with the output shaft 4.
Compared with the prior art, the invention has the following remarkable advantages:
1. and (3) balancing system efficiency: by adopting the double-row planetary gear structure, the power split type hybrid driving can be realized, and the system efficiency is higher compared with that of series and parallel hybrid electric vehicles. The power division driving mode can provide higher efficiency under the low-speed working condition; the dual-motor pure electric driving mode can reduce energy loss caused by secondary conversion between mechanical energy and electric energy when the vehicle is cruising at high speed, and improve the system efficiency; the single-motor pure electric driving mode can well solve the loss caused by repeated starting and stopping of the engine under the urban congestion road condition.
2. The acceleration performance is good: the motor can also output very high torque under the low-speed working condition, all parts of the system can output high torque in the dual-motor pure electric driving mode, the two motors work simultaneously, the performance requirement on a single motor can be reduced, the cost is saved, and the dynamic property and the fuel economy of the vehicle are effectively improved. Meanwhile, the existence of the pure electric mode enables the device to be suitable for the plug-in hybrid electric vehicle.
The invention is described in further detail below with reference to the figures and the detailed description.
Drawings
Fig. 1 is a schematic structural diagram of an automotive multimode hybrid power coupling device according to the invention.
In the figure, 1 internal combustion engine, 2 first motor/generator, 3 second motor/generator, 4 output shafts, 5 first planetary gear, 51 sun gear i, 52 planet carrier i, 53 ring gear i, 6 second planetary gear, 61 sun gear ii, 62 planet carrier ii, 63 ring gear ii, 7 gears, 8 brake i, 9 brake ii, 10 clutches.
Detailed Description
As shown in FIG. 1, the multi-mode hybrid coupling device for an automobile of the present invention comprises an internal combustion engine 1, a first motor/generator 2, a second motor/generator 3, an output shaft 4, a first planetary gear train 5, a second planetary gear train 6, a gear 7, a brake I8, a brake II 9 and a clutch 10,
one end of the first planetary gear train 5 is fixedly connected with a brake I8 and the internal combustion engine 1, the other end is fixedly connected with a second planetary gear train 6,
one end of the second planetary gear train 6 is fixedly connected with a brake II 9, the other end is fixedly connected with a gear 7,
the first planetary gear 5 is also connected to the second planetary gear 6 via a clutch 10,
the output shaft of the first motor/generator 2 is fixedly connected to a first planetary gear train 5, the output shaft of the second motor/generator 3 is fixedly connected to a second planetary gear train 6,
the gear 7 is fixedly connected with the output shaft 4.
The first planetary gear train 5 comprises a sun gear I51, a planet carrier I52 and a gear ring I53, one end of the planet carrier I52 is meshed with the sun gear I51, the other end of the planet carrier I52 is meshed with the gear ring I53, the other end of the gear ring I53 is fixedly connected with the internal combustion engine 1 and a brake I8 at the same time,
the second planetary gear train 6 comprises a sun gear II 61, a planet carrier II 62 and a gear ring II 63, one end of the planet carrier II 62 is meshed with the sun gear II 61, the other end of the planet carrier II 62 is meshed with the gear ring II 63, the gear ring II 63 is also fixedly connected with a brake II 9,
one end of the clutch 10 is fixedly connected with a sun gear I51, the other end is fixedly connected with a sun gear II 61,
one end of the planet carrier II 62 is fixedly connected with the planet carrier I52, the other end is fixedly connected with the gear 7,
the output shaft of the first motor/generator 2 is fixedly connected with the sun gear I51, and the output shaft of the second motor/generator 3 is fixedly connected with the sun gear II 61.
Example one
The invention realizes a double-motor pure electric driving mode, a power shunt driving mode and a single-motor pure electric driving mode by controlling the connection and the disconnection of the brake I8, the brake II 9 and the clutch 10. The system also has a pure electric drive mode, a hybrid drive mode, a braking energy recovery mode and a parking mode according to whether the engine is started or not and whether the vehicle is accelerated or decelerated.
The operation mode and state of the hybrid transmission will be described based on the state of the system actuator, the engine start state, and the like.
1. Parking mode I: the brake I8, the brake II 9 and the clutch 10 are all in a separation state and do not work, and the vehicle is in a static state.
2. And in the dual-motor pure electric driving mode, the brake I8 is engaged, and the brake II 9 and the clutch 10 are both separated.
In this mode, the ring gear i 53 is fixed, the carrier i 52, the carrier ii 62 connect the first planetary gear train 5 with the second planetary gear train 6, and the first motor/generator 2 forms a fixed gear ratio with the output shaft 4 through the first planetary gear train 5. In the mode, the internal combustion engine 1 does not work, when the first motor/generator 2 and the second motor/generator 3 both work as motors, the vehicle can be driven to move forward by coordinating the two motors, so that a pure electric driving mode is realized, and when the output shaft needs to output torque with the same magnitude through double-motor driving, the output power of a single motor is reduced, so that the cost of the motors is greatly reduced; when the vehicle is in a braking deceleration state, the first motor/generator 2 and the second motor/generator 3 both work as generators to convert braking energy into electric energy so as to charge a battery, and because both motors in the mode can participate in braking energy recovery, the braking energy recovery state in the mode is called high-power braking energy recovery; if the internal combustion engine 1 is not operated and the first and second motor/generators 2 and 3 do not consume energy, the vehicle is in a stopped state. The hybrid power transmission device has a pure electric mode due to the double-motor pure electric driving mode, so that the hybrid power transmission device can be applied to a plug-in hybrid electric vehicle.
3. In the power-split drive mode, the brake i 9 is engaged, and the brake i 8 and the clutch 10 are both disengaged.
In this mode, the ring gear ii 63 is fixed, the carrier i 52 and the carrier ii 62 connect the first planetary gear train 5 and the second planetary gear train 6, and the internal combustion engine 1 and the first motor/generator 2 are connected to the carrier ii 62 through the carrier i 52. In this mode, when the internal combustion engine 1 is in operation, power is input to the ring gear i 53 of the first row planetary gear train through the output shaft of the internal combustion engine 1, and is further transmitted to the planet gears i 52. At this time, the entire first-row planetary gear train set functions as a power split mechanism, coupling the internal combustion engine 1 and the first motor/generator 2 together, and a continuously variable transmission function can be realized. The primary function of the first motor/generator 2 is to operate the internal combustion engine 1 in the region of optimum fuel economy efficiency by adjusting its own rotational speed. When the energy of the internal combustion engine is more than the required power, the first motor/generator 2 is used as a generator to convert the redundant energy of the internal combustion engine into electric energy to charge the battery, and when the energy of the internal combustion engine is less than the required power, the first motor/generator 2 is used as a motor to provide energy to assist in driving the vehicle; in this mode, when the internal combustion engine 1 is not operating, a pure electric drive mode or a braking energy recovery mode can also be achieved by coordinating the two electric motor/generators, both electric motors can participate in braking energy recovery, so the braking energy recovery mode is high-power braking energy recovery. In the pure electric mode, the control of the motor is relatively complex; when the engine works, a hybrid driving mode can be realized.
4. And in the single-motor pure electric driving mode, the brake I8 and the brake II 9 are both engaged, and the clutch 10 is disengaged.
In this mode, the ring gear i 53 and the ring gear ii 63 are fixed, and the carrier i 52 and the carrier ii 62 connect the first planetary gear train 5 and the second planetary gear train 6, and the rotation speeds of the corresponding components of the two planetary gear trains are the same. The first motor/generator 2 forms a fixed gear ratio with the output shaft 4 through the first planetary gear train 5, and the second motor/generator 3 forms a fixed gear ratio with the output shaft 4 through the second planetary gear train 6. In the mode, the internal combustion engine 1 does not work, and when the first motor/generator 2 or the second motor/generator 3 works as a motor, the vehicle can be driven to move forward, so that a single-motor pure electric driving mode is realized; when the vehicle is in a braking deceleration state, the first motor/generator 2 and the second motor/generator 3 both work as generators to convert braking energy into electric energy so as to charge a battery, and because both motors in the mode can participate in braking energy recovery, the braking energy recovery state in the mode is called high-power braking energy recovery; if the internal combustion engine 1 is not operated and the first and second motor/generators 2 and 3 do not consume energy, the vehicle is in a stopped state. The hybrid power transmission device has a pure electric mode due to the pure electric driving mode of the single motor, so that the hybrid power transmission device can be applied to a plug-in hybrid electric vehicle.
5. And a parking mode II: brake I8, brake II 9 and clutch 10 are all in the engaged state, and the vehicle is at a standstill.
The following table is a summary of the working modes of the invention:
TABLE 1 summary of operating modes
The invention realizes power split type hybrid driving by utilizing a double-row planetary gear structure, and has higher system efficiency compared with a series-connection hybrid electric vehicle and a parallel-connection hybrid electric vehicle.
And a double-motor pure electric driving mode, a power shunt driving mode and a single-motor pure electric driving mode can be realized through the connection and the separation of the brake I, the brake II and the clutch.
The power device can adapt to complex and variable working environments by multiple working modes, and the dynamic property and the fuel economy of the vehicle are effectively improved. The device can realize a pure electric driving mode, so the device is suitable for the current mainstream plug-in hybrid electric vehicles.
The power distribution driving mode can provide higher efficiency under the low-speed working condition, the double-motor pure electric driving mode can reduce energy loss caused by secondary conversion between mechanical energy and electric energy when a vehicle is in high-speed cruising, the system efficiency is improved, and the single-motor pure electric driving mode can well solve the problem of loss caused by repeated starting and stopping of an engine in urban congestion road conditions.
Claims (4)
1. A multimode hybrid power coupling device of an automobile comprises an internal combustion engine (1), a first motor/generator (2), a second motor/generator (3), an output shaft (4), a first planetary gear train (5), a second planetary gear train (6), a gear (7), a brake I (8), a brake II (9) and a clutch (10),
one end of the first planetary gear train (5) is fixedly connected with the brake I (8) and the internal combustion engine (1), the other end is fixedly connected with the second planetary gear train (6),
one end of the second planetary gear train (6) is fixedly connected with a brake II (9), the other end is fixedly connected with a gear (7),
the first planetary gear train (5) is also connected with the second planetary gear train (6) through a clutch (10),
the output shaft of the first motor/generator (2) is fixedly connected with the first planetary gear train (5), the output shaft of the second motor/generator (3) is fixedly connected with the second planetary gear train (6),
the gear (7) is fixedly connected with the output shaft (4);
the method is characterized in that:
the first planetary gear train (5) comprises a sun gear I (51), a planet carrier I (52) and a gear ring I (53), one end of the planet carrier I (52) is meshed with the sun gear I (51), the other end of the planet carrier I (52) is meshed with the gear ring I (53), the other end of the gear ring I (53) is fixedly connected with the internal combustion engine (1) and a brake I (8) at the same time,
the second planetary gear train (6) comprises a sun gear II (61), a planet carrier II (62) and a gear ring II (63), one end of the planet carrier II (62) is meshed with the sun gear II (61), the other end of the planet carrier II (62) is meshed with the gear ring II (63), the gear ring II (63) is also fixedly connected with a brake II (9),
one end of the clutch (10) is fixedly connected with a sun gear I (51), the other end is fixedly connected with a sun gear II (61),
one end of the planet carrier II (62) is fixedly connected with the planet carrier I (52), the other end is fixedly connected with the gear (7),
the output shaft of the first motor/generator (2) is fixedly connected with a sun gear I (51), and the output shaft of the second motor/generator (3) is fixedly connected with a sun gear II (61).
2. The coupling device of claim 1, wherein:
and in the dual-motor pure electric driving mode, the brake I (8) is engaged, and the brake II (9) and the clutch (10) are both separated.
3. The coupling device of claim 1, wherein:
in the power-split driving mode, the brake II (9) is engaged, and the brake I (8) and the clutch (10) are both disengaged.
4. The coupling device of claim 1, wherein:
and in the single-motor pure electric driving mode, the brake I (8) and the brake II (9) are both engaged, and the clutch (10) is disengaged.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811041103.7A CN109130831B (en) | 2018-09-07 | 2018-09-07 | A vehicle multi-mode hybrid power coupling device |
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| CN201811041103.7A CN109130831B (en) | 2018-09-07 | 2018-09-07 | A vehicle multi-mode hybrid power coupling device |
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| CN109130831B true CN109130831B (en) | 2021-04-27 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112009231A (en) * | 2020-09-16 | 2020-12-01 | 山东科技大学 | Single-motor hybrid coupling device based on double-row planetary system |
| CN113085519A (en) * | 2021-05-06 | 2021-07-09 | 华中科技大学 | Dual-motor electric automobile driving system |
| CN113665353A (en) * | 2021-09-14 | 2021-11-19 | 燕山大学 | A dual-motor coupling drive system |
| CN113696721A (en) * | 2021-09-14 | 2021-11-26 | 燕山大学 | Dual-motor coupling driving system based on double-row single sun wheel type planetary mechanism |
| CN114655347A (en) * | 2022-04-19 | 2022-06-24 | 山东理工大学 | Driving system for electric power-assisted bicycle based on double planetary gear mechanisms and double motors |
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| CN103863083A (en) * | 2012-12-12 | 2014-06-18 | 现代自动车株式会社 | Power transmission system of hybrid electric vehicle |
| WO2014166723A1 (en) * | 2013-04-08 | 2014-10-16 | Volkswagen Aktiengesellschaft | Hybrid drive arrangement for a motor vehicle |
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| CN107654591A (en) * | 2017-09-07 | 2018-02-02 | 上海奥觅电子科技有限公司 | Multiple mode power shunting hybrid gearbox comprising double planetary gear unit |
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| CN103863083A (en) * | 2012-12-12 | 2014-06-18 | 现代自动车株式会社 | Power transmission system of hybrid electric vehicle |
| WO2014166723A1 (en) * | 2013-04-08 | 2014-10-16 | Volkswagen Aktiengesellschaft | Hybrid drive arrangement for a motor vehicle |
| CN107082014A (en) * | 2017-04-17 | 2017-08-22 | 南京理工大学 | A kind of automobile multimodal fusion dynamic coupling device |
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