CN109733174A - A control device for electric tractor dual-motor power confluence - Google Patents
A control device for electric tractor dual-motor power confluence Download PDFInfo
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- CN109733174A CN109733174A CN201811492532.6A CN201811492532A CN109733174A CN 109733174 A CN109733174 A CN 109733174A CN 201811492532 A CN201811492532 A CN 201811492532A CN 109733174 A CN109733174 A CN 109733174A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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Abstract
本发明公开了一种电动拖拉机双电机动力汇流的控制装置，涉及拖拉机领域，包括湿式离合器控制油路和动力汇流变速箱；所述湿式离合器控制油路按照液压油路顺序相连；所述动力汇流变速箱包括两根动力输入轴、两根动力输出轴、第一湿式离合器、中间轴和数对齿轮；所述湿式离合器控制油路控制湿式离合器的分离与结合；双电机动力汇流控制装置，不仅仅能够协调两个电机的工作区域，还能进行大转矩输出，有效地克服电动拖拉机在大负荷工况下动力不足的问题，同时提高两电机的工作效率，也实现了电动拖拉机不同驱动模式之间的切换，使电动拖拉机的动力性和经济性达到要求。
The invention discloses a control device for dual-motor power confluence of an electric tractor, and relates to the field of tractors. The gearbox includes two power input shafts, two power output shafts, a first wet clutch, an intermediate shaft and several pairs of gears; the wet clutch control oil circuit controls the separation and combination of the wet clutch; the dual motor power confluence control device, not only It can only coordinate the working areas of the two motors, and can also output large torque, which effectively overcomes the problem of insufficient power of the electric tractor under heavy load conditions, improves the working efficiency of the two motors, and realizes different driving modes of the electric tractor. The switch between them makes the power and economy of the electric tractor meet the requirements.
Description
Technical field
The invention belongs to tractor fields, are related to a kind of control device of electric tractor double-motor power confluence.
Background technique
Electric tractor mainly includes the classifications such as pure electric vehicle, hybrid power at present, with the essential distinction of traditional tractor
Specifically include that 1) vehicle power source；2) vehicle drive system.Lot of domestic and international universities and colleges and scientific research institution etc. are to electronic dilatory
Vehicle drive system scheme has numerous studies.In pure electric vehicle driving method, has plenty of using single motor and gearbox, have
It is to be driven using more motor distributions, i.e., motor respectively drives front-rear axle or driving wheel.Both the above frame mode is main
It is disadvantageous in that, since tractor needs to complete the farmland operation of a variety of big loads, suffered load fluctuation is frequent, needs
The continuous variation of load and running resistance can in time be adapted to and adjust the torque exported, guarantee the dynamic property of tractor.If
Single motor adds gearbox, and may result in gearbox, structure is complicated, can also increase the requirement to driving motor.If more motors
Distribution driving, may increase the control difficulty to vehicle drive system.
Summary of the invention
The present invention to solve the above-mentioned problems, provides a kind of control dress of gardening electric tractor double-motor power confluence
It sets.
In order to achieve the above objectives, the present invention adopts the following technical scheme:
A kind of control device of electric tractor double-motor power confluence, including wet clutch control oil circuit and power converge
Flow gearbox；The wet clutch control oil circuit is connected according to hydraulic circuit sequence；The power confluence gearbox includes two
Root power input shaft, two power output shafts, the first wet clutch, jackshaft sum number are to gear；The wet clutch control
The separation and combination of liquefaction road control wet clutch.
Further, two power input shafts are connected with movable motor with the output shaft of PTO motor respectively；Two power
Output shaft is respectively used to driving walking and PTO.
Further, movable motor is controlled by electric machine controller respectively with PTO motor, and electric machine controller passes through CAN communication
Information exchange is carried out with entire car controller.
Further, several pairs of gears include the first driving gear, the first driven gear, the second driven gear, the second active
Gear, third driving gear and third driven gear；First driving gear and third driving gear are separately mounted to two
On power input shaft, the first driven gear and the second driving gear are mounted on two power output shafts one therein, third
Driven gear is mounted on two power output shafts another therein, be equipped on jackshaft third driving gear and second from
Moving gear；And second is provided with the second wet clutch, the second wet clutch control between driven gear and third driving gear
The transmission of power between brake force input shaft and jackshaft, clutch are that the power of the first power input shaft and the second power is defeated
The power for entering axis exports again after coupling at jackshaft, i.e., second clutch is the power by two power input shafts in centre
After being coupled at axis, then export through power output shaft.
Further, the wet clutch control oil circuit includes hydraulic valve, hydraulic cylinder, fuel tank and hydraulic pump.
Further, several pairs of gears include that the 4th driven gear, the 4th driving gear, the 5th driving gear and the 5th are driven
Gear；Two power input shafts include movable motor power input shaft and PTO motor power input shaft；Two power output shaft packets
Include gearbox postposition PTO shaft and output shaft of gear-box；The 4th driven gear and the 5th driven gear, and are provided on jackshaft
The first wet clutch is provided between four driven gears and the 5th driven gear；It is defeated that first wet clutch controls two power
Enter the transmission of power between axis and jackshaft, i.e. first clutch is will to walk motor power input shaft and the input of PTO motor power
The power of axis exports after coupling at jackshaft, then through movable motor power input shaft；The 5th driving gear setting is expert at
It walks on motor power input shaft, low gear clutch collar and high gear clutch collar is additionally provided on movable motor power input shaft；Gearbox
Low gear gear attachment ring and high gear gear attachment ring are provided on output shaft；Low gear gear attachment ring and low gear clutch collar cooperate,
High gear gear attachment ring and high gear clutch collar cooperate；The 4th driving gear and PTO gear are provided on PTO motor power input shaft
Attachment ring；The PTO clutch collar being arranged on the PTO gear attachment ring and gearbox postposition PTO shaft cooperates.
Further, the 5th driving gear and the 5th driven gear are normal meshing state.
Beneficial effects of the present invention:
1. current pure electric vehicle tractor driving system structure is all that most of uses are all the structures that single motor adds gearbox,
In order to meet the farm work of big load, the driving motor of selection is all large torque, it is also desirable to which gearbox increases to realize to slow down
The function of torsion.But this programme can use two lesser motors of torque to realize the output of big torque, power confluence gearbox
Certain protective effect is also acted as to tractor driving motor.Meanwhile before fully meeting electric tractor dynamic property and requiring
It puts, moreover it is possible to simplify the internal structure of power confluence gearbox.
The drive system 2. gardening electric tractor double-motor power converges not only realizes the multi-mode driving of drive system
Switching, while the working region of two motors can be coordinated, improve the working efficiency of two motors, make entire drive system
Efficiency is optimal, and improves the dynamic property and economy of vehicle.
3. mature double-motor power confluence scheme is all for electric car currently on the market, the present invention is conducive to be promoted
The research level of gardening electric tractor double-motor power confluence drive system.
4. calculating the load torque of analysis comparison vehicle and the target torque of single motor by entire car controller, then pass through
The control device of double-motor power confluence further determines that the operating mode of double-motor power confluence drive system, drives electronic
Tractor work.Double-motor power confluence control device, can not only coordinate the working region of two motors, moreover it is possible to carry out big
Torque output the problem of being short of power under high load working condition efficiently against electric tractor, while improving the work of two motors
Make efficiency, also achieve the switching between electric tractor different driving mode, makes the dynamic property and economy of electric tractor
Reach requirement.
5. the control device structure is simple, transmission internal structure is not only simplified, and electronic dilatory to gardening
The bi-motor of machine has certain protective effect.When a certain motor failure, guarantees electric tractor driving walking, fully meet existing
For orchard or the requirement of tea place production and management.
Detailed description of the invention
Fig. 1 be the present invention relates to electric tractor double-motor power coupling mechanism schematic diagram of mechanism；
Fig. 2 is the structure diagram of gardening electric tractor double-motor power confluence control device of the invention；
Fig. 3 is the flow chart of the present invention to power confluence control.
Appended drawing reference is as follows:
1, movable motor；2, movable motor power input shaft；3, the 4th driven gear；4, the 5th driving gear；5, low gear
Gear attachment ring；6, low gear clutch collar；7, high gear clutch collar；8, high gear gear attachment ring；9, output shaft of gear-box；10, speed change
Case postposition PTO shaft；11, PTO clutch collar；12, PTO gear attachment ring；13, the 5th driven gear；14, the first wet clutch；
15, the 4th driving gear；16, PTO motor power input shaft；17, PTO motor；18, jackshaft；201, the first driving gear；
202, the first driven gear；203, the second driven gear, the 204, second driving gear；205, third driving gear；206, third
Driven gear；207, the second wet clutch；The first power output shaft of 208-；The second power output shaft of 209-.
Specific embodiment
For the present invention will be further described, now in conjunction with attached drawing, the present invention will be further described:
A kind of control device of electric tractor double-motor power confluence, which is characterized in that controlled including wet clutch
Oil circuit and power confluence gearbox；The wet clutch control oil circuit is connected according to hydraulic circuit sequence；The power confluence
Gearbox includes two power input shafts, two power output shafts, wet clutch, jackshaft sum number to gear；The wet type
The separation and combination of clutch control oil control wet clutch；Two power input shafts are electric with movable motor 1 and PTO respectively
The output shaft of machine 17 is connected；Two power output shafts are respectively used to driving walking and PTO.Movable motor 1 and PTO motor 17 divides
It is not controlled by electric machine controller, electric machine controller carries out information exchange by CAN communication and entire car controller.
In conjunction with attached drawing 1, several pairs of gears include the first driving gear 201, the first driven gear 202, the second driven gear
203, the second driving gear 204, third driving gear 205 and third driven gear 206；First driving gear 201 and
Three driving gears 205 are separately mounted on two power input shafts, and the first driven gear 202 and the second driving gear 204 are installed
On two power output shafts one therein, third driven gear 206 is mounted on two power output shafts another therein
On, third driving gear 205 and the second driven gear 203 are installed on jackshaft；And second driven gear 203 with third actively
Be provided with the second wet clutch 207 between gear 205, the second wet clutch 207 control power input shaft and jackshaft it
Between power transmission.
When electric tractor needs to carry out big load operation, i.e., when single motor is unable to satisfy the requirement of vehicle load torque,
PTO motor E2 starting, then switches to bonding state by separating for wet clutch, and vehicle enters double-motor power coupling and drives
Dynamic model formula can meet the job requirement of the big torque of electric tractor.
In order to clutch K can steadily be combined, following condition need to be met:In formula: n1: movable motor E1's
Revolving speed；n2: PTO motor E2Revolving speed；i1: the transmission ratio of the first driving gear 201 and the first driven gear 202；i2: second is main
The transmission ratio of moving gear 204 and the second driven gear 203.
In conjunction with attached drawing 2, a kind of control device of gardening electric tractor double-motor power confluence, including wet clutch control
Liquefaction road and power confluence gearbox；Wherein, wet clutch control oil circuit include hydraulic cylinder, hydraulic pump, hydraulic valve and
Fuel tank is connected according to hydraulic circuit sequence in succession；The hydraulic cylinder is mounted on electric tractor vehicle frame.Power confluence
Gearbox include the first wet clutch 14, movable motor power input shaft 2, PTO motor power input shaft 16, jackshaft 18,
Output shaft of gear-box 9, gearbox postposition PTO shaft 10 and several pairs of gears.The movable motor of driving motor and confluence gearbox is dynamic
Power input shaft 2 is connected by spline, and PTO motor 17 is connect with the PTO motor power input shaft 16 of confluence gearbox by spline,
First wet clutch 14 is mounted on confluence gearbox jackshaft 18, is in normal discrete state, and the 4th in gearbox is driven
Gear 3 and the 4th driving gear 15, the 5th driving gear 4 and the 5th driven gear 13 are in normal meshing state, gearbox output
Axis 9, is connected with main reducing gear, and driving tractor walking, gearbox postposition PTO shaft 10 is mounted with farm implements.
Movable motor 1 and PTO motor 17 are connected with electric machine controller, and are controlled by different electric machine controllers
, electric machine controller carries out information interchange by CAN communication and entire car controller.First wet clutch 14 is in often separation shape
State is controlled the working condition of the first wet clutch 14 by hydraulic valve, and then determines the Working mould of dual-motor drive system
Formula.Power confluence transmission internal realizes the commutation of power using gear mesh structure, and power transmission efficiency is high.Power confluence speed change
There are two power output shafts for case, and wherein power output shaft is directly by PTO motor control, and box house does not need setting and reverses gear
Mechanism, making transmission internal, the structure can be simplified.Power confluence gearbox, box house realize power using gear mesh structure
Commutation；The working condition that wet clutch is controlled by hydraulic valve further determines that the Working mould of dual-motor drive system
Formula.
The output shaft of gardening electric tractor double-motor power confluence gearbox, wherein for PTO, it is directly electric with PTO
Machine is directly connected by spline.In addition, not needing setting reverse gear mechanism in terms of Gearbox design, further simplifying remittance
Flow the structure of transmission internal；On arrangement, bi-motor arrangement is more flexible and convenient；Meanwhile guaranteeing to lose in a certain motor
When effect, another motor can guarantee that tractor can be with normal walking.
In conjunction with attached drawing 3, under the control of gardening electric tractor double-motor power confluence control device, different driving mode
Under each executive component working condition and power transmission route, it is as shown in the table:
(1) entire car controller is by analytical calculation, the load needed for the target torque Te of single motor can not overcome vehicle
Torque Tf, i.e. Te<Tf.By control hydraulic valve, so that the first wet clutch 14 is switched to bonding state by discrete state, i.e., from
Dynamic branch pattern switching is at power confluence mode.Power transmission route under this mode are as follows: the power of movable motor output exists
From movable motor power input shaft 2, successively passes through the 4th driven gear 3, low gear clutch collar 6, high gear clutch collar 7 are made by shift fork
Right (left side) is moved, and is engaged with low gear gear attachment ring 5, high gear gear attachment ring 8, and PTO motor power passes through input shaft 16, is successively passed through
Cross gear 15, the 4th driven gear 3, the 5th driven gear 13, the power of last two motor by output shaft 9, reach rear axle and
Rear drive sprocket drives vehicle to run；
(2) entire car controller is by analytical calculation, the load needed for the target torque Te of single motor can overcome vehicle
Torque Tf, i.e. Te>Tf.By controlling hydraulic valve, so that the first wet clutch 14 is switched to discrete state by bonding state, that is, move
Power converges pattern switching into dynamic branch mode.Power transmission route under this mode are as follows: by shift fork make low gear clutch collar 6,
High gear clutch collar 7 left (right side) moves, and engages with low gear gear attachment ring 5, high gear gear attachment ring 8, the power that movable motor provides,
From movable motor power input shaft 2, successively pass through gear 4, be transferred to output shaft of gear-box 9, reach rear axle and rear drive sprocket, drives
Dynamic tractor walking.
Wet clutch is mounted on confluence gearbox jackshaft 18, is in normal discrete state.Case the intracorporal 5th is actively
Gear 4, low gear clutch collar 6, high gear clutch collar 7 are mounted on gearbox movable motor power input shaft 2；4th driving gear 15
It is mounted on the second input shaft of gearbox 16 with PTO gear attachment ring 12；4th driven gear 3 and the 5th driven gear 13 are mounted in
On gearbox jackshaft 18.Wherein, the 4th driven gear 3 and the 4th driving gear 15, the 5th driving gear 4 and five driven gears
13 all in normal meshing state.
The embodiment is a preferred embodiment of the present invention, but present invention is not limited to the embodiments described above, not
In the case where substantive content of the invention, any conspicuous improvement that those skilled in the art can make, replacement
Or modification all belongs to the scope of protection of the present invention.
Claims (8)
1. a kind of control device of electric tractor double-motor power confluence, which is characterized in that control oil including wet clutch
Road and power confluence gearbox；The wet clutch control oil circuit is connected according to hydraulic circuit sequence；The power confluence becomes
Fast case includes two power input shafts, two power output shafts, wet clutch, jackshaft sum number to gear；The wet type from
Clutch controls the separation and combination of oil circuit control wet clutch.
2. the control device of electric tractor double-motor power confluence according to claim 1, which is characterized in that two dynamic
Power input shaft is connected with movable motor (1) with the output shaft of PTO motor (17) respectively；Two power output shafts are respectively used to drive
Dynamic walking and PTO.
3. the control device of electric tractor double-motor power confluence according to claim 1, which is characterized in that walking electricity
Machine (1) is controlled by electric machine controller respectively with PTO motor (17), and electric machine controller is carried out by CAN communication and entire car controller
Information exchange.
4. the control device of electric tractor double-motor power confluence according to any one of claims 1 to 3, feature exist
In several pairs of gears include the first driving gear (201), the first driven gear (202), the second driven gear (203), the second active
Gear (204), third driving gear (205) and third driven gear (206)；First driving gear (201) and third master
Moving gear (205) is separately mounted on two power input shafts, and the first driven gear (202) and the second driving gear (204) are pacified
On two power output shafts one therein, it is therein another that third driven gear (206) is mounted on two power output shafts
Third driving gear (205) and the second driven gear (203) are installed on one, on jackshaft；And second driven gear (203)
It is provided between third driving gear (205) the second wet clutch (207), the second wet clutch (207) controls power
The connection and disconnection of input shaft and jackshaft, i.e. second clutch (207) are the power by two power input shafts in jackshaft
Locate after coupling, then exported through power output shaft.
5. the control device of electric tractor double-motor power according to claim 4 confluence, which is characterized in that described the
Two driven gears (203), the second driving gear (204) are normal meshing state.
6. the control device of electric tractor double-motor power confluence according to claim 1, which is characterized in that described wet
Formula clutch control oil includes hydraulic valve, hydraulic cylinder, fuel tank and hydraulic pump.
7. the control device of electric tractor double-motor power confluence according to any one of claims 1 to 3, feature exist
In several pairs of gears include the 4th driven gear (3), the 4th driving gear (15), the 5th driving gear (4) and the 5th driven gear
(13)；Two power input shafts include movable motor power input shaft (2) and PTO motor power input shaft (16)；Two power
Output shaft includes gearbox postposition PTO shaft (10) and output shaft of gear-box (9)；Jackshaft is provided with the 4th driven gear on (18)
(3) with the 5th driven gear (13), and be provided between the 4th driven gear (3) and the 5th driven gear (13) the first wet type from
Clutch (14)；First wet clutch (14) controls the connection and disconnection of two power input shafts and jackshaft, i.e. the first clutch
Device (14) be by the power of movable motor power input shaft (2) and PTO motor power input shaft (16) at jackshaft (18) coupling
After conjunction, then through movable motor power input shaft (2) output；Motor power input of being expert at is arranged in 5th driving gear (4)
On axis (2), low gear clutch collar (6) and high gear clutch collar (7) are additionally provided on movable motor power input shaft (2)；Gearbox is defeated
Low gear gear attachment ring (5) and high gear gear attachment ring (8) are provided on shaft (9)；Low gear gear attachment ring (5) connects with low gear
Trap (6) cooperation, high gear gear attachment ring (8) and high gear clutch collar (7) cooperate；It is arranged on PTO motor power input shaft (16)
There are the 4th driving gear (15) and PTO gear attachment ring (12)；The PTO gear attachment ring (12) and gearbox postposition PTO shaft
(10) PTO clutch collar (11) cooperation being arranged on.
8. the control device of electric tractor double-motor power confluence according to claim 7, which is characterized in that the 5th is main
Moving gear (4) and the 5th driven gear (13) are normal meshing state.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811492532.6A CN109733174A (en) | 2018-12-07 | 2018-12-07 | A control device for electric tractor dual-motor power confluence |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811492532.6A CN109733174A (en) | 2018-12-07 | 2018-12-07 | A control device for electric tractor dual-motor power confluence |
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Cited By (7)
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| CN110217089A (en) * | 2019-06-28 | 2019-09-10 | 洛阳智能农业装备研究院有限公司 | A kind of electric tractor is double to set power-driven system |
| CN110843554A (en) * | 2019-11-27 | 2020-02-28 | 洛阳智能农业装备研究院有限公司 | Tractor power converging and shunting distribution method based on double-motor configuration |
| CN110843492A (en) * | 2019-11-27 | 2020-02-28 | 洛阳智能农业装备研究院有限公司 | Tractor power confluence reposition of redundant personnel transmission system based on bi-motor configuration |
| CN111231650A (en) * | 2020-01-08 | 2020-06-05 | 同济大学 | Tractor power split hybrid power system and control method thereof |
| CN114635950A (en) * | 2020-12-16 | 2022-06-17 | 韩虎产业株式会社 | Transmission for electric vehicles |
| CN115946526A (en) * | 2023-01-05 | 2023-04-11 | 中联重科股份有限公司 | Double-motor coupling transmission device, control method and power transmission machine |
| EP4397520A1 (en) * | 2023-01-04 | 2024-07-10 | Kubota Corporation | Work vehicle |
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| CN115946526A (en) * | 2023-01-05 | 2023-04-11 | 中联重科股份有限公司 | Double-motor coupling transmission device, control method and power transmission machine |
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