CN104802628B - Hybrid vehicle single planetary bevel gear system's dynamic coupling device and method - Google Patents
Hybrid vehicle single planetary bevel gear system's dynamic coupling device and method Download PDFInfo
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- CN104802628B CN104802628B CN201510217000.1A CN201510217000A CN104802628B CN 104802628 B CN104802628 B CN 104802628B CN 201510217000 A CN201510217000 A CN 201510217000A CN 104802628 B CN104802628 B CN 104802628B
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Abstract
The present invention relates to a kind of hybrid vehicle single planetary bevel gear system dynamic coupling device and method, the dynamic coupling device includes engine, motor, and the planetary gear train being made up of sun gear, planet carrier, gear ring and planetary gear；Connected by first clutch between the engine and the planet carrier, connected between the engine and the sun gear by second clutch；The motor is connected with the sun gear；The first brake is provided with the planet carrier, second brake is provided with the gear ring；The gear ring is connected by power output gear with ex-ternal transmission mechanism, and power is transferred into automobile driving wheel.The dynamic coupling device both has the characteristics of compact-sized, control is simple, and and can enough realizes different mode of operations to adapt to driving operating mode complicated and changeable, can improve the fuel characteristic and power performance of automobile.
Description
Technical field
The invention belongs to new-energy automobile power technology field, and in particular to a kind of hybrid vehicle single planetary bevel gear system is moved
Power coupling device and method.
Background technology
Hybrid vehicle (Hybrid Electric Vehicle, abbreviation HEV) is the important section under energy crisis background
Skill product, the shortcomings that it overcomes conventional fuel oil automobile and pure electric automobile, by the coupled relation of multiple power conversion apparatus
Multiple-working mode is realized, so as to obtain optimal fuel consumption and emission performance.Dynamic coupling system is that different mixing are dynamic
Where the maximum difference of power garage, its structure determines the horizontal and square of HEV dynamical systems research and development with coupled modes
To being a most key link in HEV exploitations.How to realize that dynamic coupling device had both had compact-sized, control simply
The characteristics of, allow hand over different mode of operations again with adapt to driving operating mode complicated and changeable with reach fuel-efficient, emission reduction, improve it is dynamic
The purpose of power performance, it is the emphasis problem of dynamic coupling device technical research.
The content of the invention
It is an object of the invention to provide a kind of hybrid vehicle single planetary bevel gear system dynamic coupling device, and it both has knot
The characteristics of structure is compact, control is simple, and can enough realizes different mode of operations to adapt to driving operating mode complicated and changeable, Neng Gougai
The fuel characteristic and power performance of kind automobile.
Hybrid vehicle single planetary bevel gear system dynamic coupling device of the present invention, it includes engine, motor, Yi Jiyou
The planetary gear train that sun gear, planet carrier, gear ring and planetary gear are formed；Between the engine and the planet carrier by first from
Connected between clutch connection, the engine and the sun gear by second clutch；The motor connects with the sun gear
Connect；The first brake is provided with the planet carrier, second brake is provided with the gear ring；The gear ring is defeated by power
Go out gear to be connected with ex-ternal transmission mechanism, power is transferred to automobile driving wheel.
The present invention has advantages below：(1) single planetary bevel gear system is used so that the mechanism of whole dynamic coupling device more steps up
Gather, save arrangement space, control is more simple, and large carrying capacity, transmission efficiency；(2) by controlling first clutch,
The engaged/disengaged states of executive component such as two clutches, the first brake, second brake and the working condition of motor, can
A variety of typical mode of operation are realized, to adapt to driving operating mode complicated and changeable, the fuel characteristic and power of automobile can be improved
Performance.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
In figure：1- engines, 2- first clutches, 3- second clutches, the brakes of 4- first, 5- gear rings, 6- planets
Frame, 7- sun gears, 8- motors, 9- power output gears, 10- second brakes.
Embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings.
As shown in figure 1, the hybrid vehicle single planetary bevel gear system dynamic coupling device, it includes engine 1, motor 8,
And the planetary gear train being made up of sun gear 7, planet carrier 6, gear ring 5 and planetary gear；It is characterized in that：The engine with it is described
Connected by first clutch 2 between planet carrier, connected between the engine and the sun gear by second clutch 3；
The motor 8 is connected with the sun gear；The first brake 4 is provided with the planet carrier, second is provided with the gear ring
Brake 10；The gear ring 5 is connected by power output gear 9 with ex-ternal transmission mechanism, and power is transferred into Automobile drive
Wheel.
By controlling the executive components such as first clutch 2, second clutch 3, the first brake 4, second brake 10
The working condition of engaged/disengaged state and motor 8, the pure motorized motions of hybrid vehicle, generator drive, driving can be achieved
A variety of typical mode of operation such as charging, combination drive, regenerative braking, power generation in parking, the joint shape of executive component under various patterns
State represents executive component engagement referring to following table, wherein "●", and "○" represents executive component separation.
The engagement state of executive component under various patterns
Specific coupling process under each typical mode of operation is as follows：
1) pure electric Drive Mode：Under electric-only mode, first clutch 2 separates, second clutch 3 separates, the first system
Dynamic device 4 engages, and planet carrier 6 maintains static, and the motor 8 is according to load output power.Now, the reversion of motor 8 drives sun gear 7
Rotate, power is reached by gear ring 5 by planetary gears, then by power output gear 9 by power output.Under the pattern
Power transfer route is：5 → power output gear of motor 8 → sun gear, 7 → gear ring 9.
2) engine drive mode：When vehicle is travelled with higher speed, required driving power is in the efficient of engine
Workspace, now automotive service pattern is operated alone in engine.Under the pattern, first clutch 2 engages, second clutch 3
Engagement, the first brake 4 separates, second brake 10 separates, planetary gears self-locking, the conduct under the drive of engine 1
One overall operation, and the motor 8 will dally with sun gear 7.Power transfer route under the pattern is：Engine 1 → the
One clutch 2,3 → planetary gears of second clutch → power output gear 9.
3) driving charge mode：When driving a vehicle, load is smaller, when not reaching the best effort load of engine 1, the motor 8
Run in either a generation, increase the load of engine 1 to improve its efficiency, improve oil consumption characteristic, while maintain battery electric quantity to put down
Weighing apparatus.Under the pattern, first clutch 2 engages, second clutch 3 engages, and the first brake 4 separates, second brake 10 separates,
Planetary gears self-locking, an overall operation is used as under the drive of engine 1, and the motor 8 is rotated forward and generated electricity.Now send out
A power output part for motivation 1 is transferred to motor 8 by sun gear 7, for generating electricity；Another part is transferred to by gear ring 5
Power output gear 9, for driving automobile.
4) combination drive pattern is divided into two subpatterns, as follows：
1. combination drive modes I：When automobile such as is climbing, overtakes other vehicles or accelerated at high load working condition downward driving, the required driving work(
When rate is much larger than the optimal power of engine, motor supplement power so that engine is still operated on " optimal curve ".The pattern
Under, first clutch 2 engages, second clutch 3 engages, and the first brake 4 separates, second brake 10 separates, planetary gear
Mechanism self-locking, an overall operation is used as under the drive of engine 1, and the motor 8 rotates forward power output.Now, start
The power output of machine 1 is realized on planetary gears with the power output of motor 8 and coupled, and is transferred to power output gear 9,
Common driving automobile.2. combination drive mode II：When automobile high-speed cruises, to keep speed, and engine is caused to be in steady
Working condition is determined, using electric machine speed regulation.Under the pattern, first clutch 2 engages, and second clutch 3 separates, the first braking
Device 4 separates, second brake 10 separates, and the motor 8 rotates forward output smaller power, for speed governing.Now, power transfer route
There are two：5 → power output gear of engine 1 → first clutch, 2 → planet carrier, 6 → gear ring 9；8 → sun gear of motor 7 → OK
Star gear → 5 → power output gear of gear ring 9.
5) braking mode：In moderating process, motor can carry out power recovery, and vehicle energy is converted into power storage
To battery.According to the driving conditions before deceleration, regenerative braking, which is divided into, has engine to drag regenerative braking (B shelves) and without engine
Regenerative braking (D shelves) two kinds of forms of dragging are as follows：
1. engine dragging braking mode (B shelves)：When abrupt slope under automobile, using motor engine combined brake.Should
Under pattern, first clutch 2 engages, second clutch 3 engages, and the first brake 4 separates, and second brake 10 separates, planet
Gear mechanism self-locking, as an overall operation.Now, due to running car inertia, planetary gears is driven to operate, one
Power is divided to be used to overcome the anti-running resistance for dragging engine 1；Another part power generates electricity for motor 8.
2. without engine dragging braking mode (D shelves)：Under the pattern, first clutch 2 separates, and second clutch 3 separates,
First brake 4 is engaged, and planet carrier 6 is connected with frame, is maintained static, and the second brake 10 separates.Due to running car
Inertia, sun gear 7 is driven to rotate, so as to which motor 8 generates electricity.Now, power transfer route is：9 → tooth of power output gear
Enclose 5 → planetary gear → 7 → motor of sun gear 8.6) power generation in parking pattern：When the of short duration parking of automobile, in order to avoid engine
Frequent start-stop, so as to improve vehicle fuel economy, while charge level being maintained, power generation in parking pattern is divided into two subpatterns,
It is as follows：1. power generation in parking modes I：Under the pattern, first clutch 2 separates, and second clutch 3 engages, and the first brake 4 divides
From, second brake 10 engages, and gear ring 5 maintains static, and engine 1 drives sun gear 7 to rotate by second clutch 3, so as to
Drive motor 8 generates electricity, and planet carrier 6 dallies.Power transfer route is：Engine 1 → second clutch, 3 → sun gear, 7 → motor
8。
2. power generation in parking mode II：Under the pattern, first clutch 2 engages, and second clutch 3 separates, the first brake 4
Separation, second brake 10 engage, and gear ring 5 maintains static, and engine 1 drives planet carrier 6 to rotate by first clutch 2, too
Sun 7 concomitant rotations of wheel, so as to which drive motor 8 generates electricity.Power transfer route is：1 → first clutch of engine, 2 → planet carrier 6
7 → motor of → sun gear 8.
7) pure electronic reversing mode：When battery allowance is enough, as far as possible using pure electronic reversing mode, electricity can be given full play to
The characteristic of machine low speed high torque, not only increases the dynamic property of automobile, while avoids low engine speed operating condition, improves automobile
Overall fuel economy.Under the pattern, first clutch 2 separates, and second clutch 3 separates, and the first brake 4 engages, planet
Frame 6 is fixed, and the second brake 10 separates, and the motor 8 is driven forward, and so as to drive gear ring 5 to rotate backward, passes through power
Output gear 9 is by power output.8) engine reversing mode：When battery allowance deficiency, using engine reversing mode.Should
Under pattern, first clutch 2 is separated, and second clutch 3 engages, and the first brake 4 is engaged, and planet carrier 6 is fixed, second brake
10 separation, engine 1 drive sun gear 7 to rotate by second clutch 3, the motor 8 positive idle running therewith, and gear ring 5 is anti-
To rotation, by power output gear 9 by power output.
9) engine start pattern：Starting engine has two ways, including motor is directly initiated and started with decelerating through motor,
It is as follows：
1. motor directly initiates：Under the pattern, first clutch 2 separates, and second clutch 3 engages, and the first brake 4 divides
From second brake 10 engages, and the motor 8 rotates forward, and drives engine 1 to rotate by second clutch 3.
2. decelerating through motor starts：Under the pattern, first clutch 2 engages, and second clutch 3 separates, and the first brake 4 divides
From second brake 10 is engaged, and gear ring 5 is fixed, and the motor 8 rotates forward, and drives sun gear 7 to rotate, so as to drive planet
Frame 6 rotates forward, and starts engine 1 by first clutch 2.
Claims (1)
1. a kind of hybrid vehicle single planetary bevel gear system dynamic coupling device, it includes engine（1）, motor（8）, and by too
Sun wheel（7）, planet carrier（6）, gear ring（5）And the planetary gear train that planetary gear is formed；It is characterized in that：The engine and the row
Pass through first clutch between carrier（2）Pass through second clutch between connection, the engine and the sun gear（3）Even
Connect；The motor（8）It is connected with the sun gear；The first brake is provided with the planet carrier（4）, set on the gear ring
There is second brake（10）；The gear ring（5）Pass through power output gear（9）Mechanism is connected with ex-ternal transmission, and power is passed
It is handed to automobile driving wheel；
Described device realizes that the method for power coupling output is as follows：
1）Under electric-only mode：Under the pattern, first clutch（2）Separation, second clutch（3）Separation, the first brake（4）
Engagement, second brake（10）Separation, the motor（8）According to load output power；
2）Engine drive mode：When vehicle is travelled with higher speed, required driving power is in the efficient operation of engine
Area, pattern is now operated alone using engine, under the pattern, first clutch（2）Engagement, second clutch（3）Engagement, the
One brake（4）Separation, second brake（10）Separation, planetary gears self-locking, in engine（1）Drive under be used as one
Individual overall operation, the motor（8）Will be with sun gear（7）Idle running；
3）Driving charge mode：When driving a vehicle, load is smaller, when not reaching the best effort load of engine, then using driving charging
Pattern, under the pattern, first clutch（2）Engagement, second clutch（3）Engagement, the first brake（4）Separation, the second braking
Device（10）Separation, planetary gears self-locking, in engine（1）Drive under be used as an overall operation, the motor（8）With
Power generation mode is run, electrification energy storage；
4）Combination drive pattern is divided into two subpatterns：
Combination drive modes I：When high load working condition downward driving is being climbed, overtakes other vehicles or accelerated to automobile, required driving power is much larger than
During the optimal power of engine, motor supplement power so that engine is still operated on " optimal curve ", under the pattern, first
Clutch（2）, second clutch（3）Engagement, the first brake（4）, second brake（10）Separation, planetary gears is certainly
Lock, in engine（1）Drive under be used as an overall operation, and the motor（8）Rotate forward power output；
Combination drive mode II：When automobile high-speed cruises, to keep speed, and engine is caused to be in steady-working state,
Using electric machine speed regulation, under the pattern, first clutch（2）Engagement, second clutch（3）Separation, the first brake（4）Point
From, second brake（10）Separation, the motor（8）Output smaller power is rotated forward, for speed governing；
5）Braking mode, which is divided into, to be had engine dragging regenerative braking and drags two kinds of subpatterns of regenerative braking without engine：
There is engine to drag braking mode：When abrupt slope under automobile, using motor and engine combined brake, under the pattern,
One clutch（2）Engagement, second clutch（3）Engagement, the first brake（4）Separation, second brake（10）Separation, planet tooth
Mechanism self-locking is taken turns, as an overall operation；The motor（8）Run in either a generation；
Braking mode is dragged without engine：Under the pattern, first clutch（2）Separation, second clutch（3）Separation, the first system
Dynamic device（4）Engagement, second brake（10）Separation；The motor（8）Run in either a generation；
6）Power generation in parking pattern：When the of short duration parking of automobile, in order to avoid the frequent start-stop of engine, so as to improve vehicle fuel oil warp
Ji property, while maintain charge level, then using power generation in parking pattern, the pattern is divided into two subpatterns：
Power generation in parking modes I：Under the pattern, first clutch（2）Separation, second clutch（3）Engagement, the first brake（4）
Separation, second brake（10）Engagement；The motor（8）Run in either a generation；
Power generation in parking mode II：Under the pattern, first clutch（2）Engagement, second clutch（3）Separation, the first brake（4）
Separation, second brake（10）Engagement；The motor（8）Run in either a generation；
7）Pure electronic reversing mode：When battery allowance is enough, then using pure electronic reversing mode, under the pattern, the first clutch
Device（2）, second clutch（3）Separation, the first brake（4）Engagement, second brake（10）Separation；The motor（8）Rotate forward
Power output；
8）Engine reversing mode：When battery allowance deficiency, then using engine reversing mode, under the pattern, the first clutch
Device（2）Separation, second clutch（3）Engagement, the first brake（4）Engagement, second brake（10）Separation, the motor（8）
Idle running；
9）Engine start pattern：Starting engine has two kinds of subpatterns, including motor is directly initiated and started with decelerating through motor：
Motor directly initiates：Under the pattern, first clutch（2）Separation, second clutch（3）Engagement, the first brake（4）Point
From second brake（10）Engagement, the motor（8）Rotate forward and start engine；
Decelerating through motor starts：Under the pattern, first clutch（2）Engagement, second clutch（3）Separation, the first brake（4）Point
From second brake（10）Engagement, gear ring are fixed, the motor（8）Rotate forward and start engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510217000.1A CN104802628B (en) | 2015-04-30 | 2015-04-30 | Hybrid vehicle single planetary bevel gear system's dynamic coupling device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510217000.1A CN104802628B (en) | 2015-04-30 | 2015-04-30 | Hybrid vehicle single planetary bevel gear system's dynamic coupling device and method |
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| CN104802628B true CN104802628B (en) | 2017-12-29 |
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| CN106476610B (en) * | 2015-08-31 | 2019-02-26 | 比亚迪股份有限公司 | Power drive system and vehicle with it |
| CN106476600B (en) * | 2015-08-31 | 2019-02-26 | 比亚迪股份有限公司 | Power drive system and vehicle with it |
| CN106476603B (en) * | 2015-08-31 | 2019-01-11 | 比亚迪股份有限公司 | Power drive system and vehicle with it |
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| CN106394227B (en) * | 2016-12-01 | 2018-10-23 | 重庆青山工业有限责任公司 | A kind of hybrid power automobile driving system |
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| CN108215764B (en) * | 2017-12-20 | 2022-08-16 | 重庆大学 | Single-planet-row multi-mode hybrid power transmission system |
| CN110861489A (en) * | 2018-08-27 | 2020-03-06 | 郑州宇通客车股份有限公司 | Power system of electric sanitation vehicle |
| CN111016617A (en) * | 2018-10-09 | 2020-04-17 | 郑州宇通客车股份有限公司 | Planet row hybrid power system and vehicle |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005018662A1 (en) * | 2005-04-21 | 2006-11-02 | Voith Turbo Gmbh & Co. Kg | Electromechanical drive unit operating method for use in vehicle, involves connecting electrical machines using electrical coupling, and arranging transfer box and one electrical machine coaxial to each other |
| CN101000084A (en) * | 2005-12-23 | 2007-07-18 | 通用汽车环球科技运作公司 | Hybrid electro-mechanical transmission with single motor/generator and method of control |
| CN101585360A (en) * | 2008-05-21 | 2009-11-25 | 通用汽车环球科技运作公司 | Electric torque converter for a powertrain and method of operating a vehicle |
| CN204567246U (en) * | 2015-03-27 | 2015-08-19 | 黄卫全 | Two-purpose car protective cover machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012053142A1 (en) * | 2010-10-21 | 2012-04-26 | Toyota Jidosha Kabushiki Kaisha | Transmission |
-
2015
- 2015-04-30 CN CN201510217000.1A patent/CN104802628B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005018662A1 (en) * | 2005-04-21 | 2006-11-02 | Voith Turbo Gmbh & Co. Kg | Electromechanical drive unit operating method for use in vehicle, involves connecting electrical machines using electrical coupling, and arranging transfer box and one electrical machine coaxial to each other |
| CN101000084A (en) * | 2005-12-23 | 2007-07-18 | 通用汽车环球科技运作公司 | Hybrid electro-mechanical transmission with single motor/generator and method of control |
| CN101585360A (en) * | 2008-05-21 | 2009-11-25 | 通用汽车环球科技运作公司 | Electric torque converter for a powertrain and method of operating a vehicle |
| CN204567246U (en) * | 2015-03-27 | 2015-08-19 | 黄卫全 | Two-purpose car protective cover machine |
Non-Patent Citations (1)
| Title |
|---|
| 新型混合动力汽车传动系统设计与工作模式耦合特性分析;杨阳等;《汽车工程》;20121125;第34卷(第11期);第968-975页 * |
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Address after: 402760 No.100, Jianshan Road, Biquan street, Bishan District, Chongqing Patentee after: Landai Technology Group Co.,Ltd. Patentee after: Chongqing University Address before: 402760 No.100 Jianshan Road, Biquan street, Bishan County, Chongqing Patentee before: CHONGQING LANDAI POWERTRAIN Corp.,Ltd. Patentee before: Chongqing University |