CN103754099A - Double-motor multi-mode dynamic coupling driving assembly - Google Patents
Double-motor multi-mode dynamic coupling driving assembly Download PDFInfo
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- CN103754099A CN103754099A CN201410014484.5A CN201410014484A CN103754099A CN 103754099 A CN103754099 A CN 103754099A CN 201410014484 A CN201410014484 A CN 201410014484A CN 103754099 A CN103754099 A CN 103754099A
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Abstract
The invention provides a double-motor multi-mode dynamic coupling driving assembly. A first motor 15 and a second motor 3 are taken as systematic power sources. A rotor of the first motor is integrated with a gear ring to form a gear ring rotor 8, and a complete planetary gear structure is inside the gear rotor. The two motors are coaxially arranged, and a lock 4 is used for locking a sun gear and the second motor 3. The double-motor multi-mode dynamic coupling driving assembly is capable of realizing a single driving mode of the first motor 15, a first motor brake energy recovering mode, a double-motor speed coupling driving mode and a double-motor speed coupling brake energy recovering mode. In addition, the double-motor multi-mode dynamic coupling driving assembly is compact in dynamic coupling structure, small in size and large in power density. Under the condition of not changing the size of a main body of the motor 15, output torque of the motor is improved, demand characteristics on large torque of a driving system of a vehicle can be met, and demands on the driving system, with high power density, of a heavy vehicle under the condition that spatial mass is limited can be met.
Description
Technical field
The invention belongs to dynamic assembly component technology field, be specifically related to a kind of double-motor power couple drive assembly.
Background technology
The drive system of the heavy type electric automobile in China's motor vehicles for civilian use field mainly adopts a large motor to add the form of change-speed box at present, by the speed ratio of controlling change speed gear box, the driving torque of motor is regulated, to meet the climbing of automobile, the requirement of acceleration and maximum speed.But this drive form requires stricter to the bearing of large motor.Heavy-duty vehicle is operated under low speed operating mode as electric coach more, thereby causes motor to be often operated in the work area that efficiency is lower.In traditional speed-changing mechanism shift process, there will be power interruption, thereby produce the problems such as the traveling comfort that unnecessary impact and impact take.The present invention aims to provide a kind of simple in structure, compactness, and power density is large, rotating speed couple drive structure easy and simple to handle.This structure can be exported large torque actuated vehicle by a motor when low vehicle speeds, under the prerequisite that meets vehicle power, keep motor to work efficiently, during high speed, system can realize the gearshift of power failure-free, and two motor speed couplings meet the need of work of high vehicle speeds.
Application number is the motor rotating speed couple drive assembly that 201010100671.7 Chinese patent discloses a kind of applicable electric coach, one group of simple planetary mechanism, two drive motor, a mechanical brake, consists of.During low speed, a motor is connected with the sun wheel of planetary mechanism, mechanical brake locking gear ring, and power is inputted by sun wheel, by pinion carrier, is exported to realize deceleration no-load voltage ratio, is exported large torque; During high speed, mechanical brake release gear ring, No. one motor power inputs to sun wheel, and No. two motor powers input to the gear ring of the sun and planet gear being attached thereto, and realize the rotating speed coupling of two motor input powers by sun and planet gear; This scheme is simple in structure and reduced torque capacity and the power of separate unit motor.But exist following not enough: during high speed, the torque of a motor output is limited by the torque capacity of No. two motors.During low speed, a motor will carry out switching working mode when the speed of a motor vehicle is not high, cause being often operated in Vehicular shift under vulgar vehicle speed condition frequent, affect traveling comfort.Therefore vehicle is when low speed driving, and vehicle shift is frequent, and when running at high speed, No. one motor degree of utilization is lower.Another shortcoming is in shift process, to have torque sudden change, also affects traveling comfort.
Application number is that 201210024534.9 Chinese patent discloses a kind of double-motor coupling transmission system, one group of sun and planet gear, one group of fixed axis gear mechanism, two drive motor, a mechanical brake, two power-transfer clutchs, consists of.By can realize torque coupling output and the rotating speed coupling output of double-motor to jointly controlling of two power-transfer clutchs and a mechanical brake, and the switching before two kinds of output modes.Power failure-free gearshift when this scheme has realized Vehicle Driving Cycle; When low speed, by double-motor torque coupling, realize large torque output, during high speed, by motor rotating speed, be coupled and realize high rotating speed output; Be no matter in torque coupling or under rotating speed coupling, two motors all participate in work, degree of utilization is higher.But there is complicated in mechanical structure, deficiency; While switching between torque coupling mode of operation and rotating speed coupling work mode, need to manipulate two power-transfer clutchs and a mechanical brake, its linkage control device and manipulation are complicated simultaneously.
Application number is that the Chinese patent of CN201310117747.0 discloses a kind of double-motor coupling transmission system, and by two groups of planet rows, two motors and a mechanical brake composition, by realizing the torque and rotational speed coupling of system to the control of mechanical brake.When low speed, by double-motor torque coupling, realize large torque output, during high speed, by motor rotating speed, be coupled and realize high rotating speed output; The utilization ratio of motor is high.But have complicated in mechanical structure, power density is little, the deficiency that structure is compact not.
Summary of the invention
The present invention aims to provide a kind of high power density, double-motor multi-model coupling drive configuration simple in structure, easy and simple to handle, a relatively large machine operation while realizing automobile low speed driving, output high pulling torque; During galloping, motor rotating speed coupling, exports high rotating speed; Thereby make the conventional operating mode of vehicle be operated in the efficacious workaround of motor; The power density that overcomes existing transmission system is little, complex structure, manipulates loaded down with trivial details, gearshift and has the problem of power interruption.
The object of the present invention is achieved like this:
An integrate motor (15) and No. two motors (3) are coaxially arranged.The power of an integrate motor (15) is through stator (6), pass to rotor gear ring (8) by magnetic field, the power of No. two motors (3) passes to sun wheel (10) through mechanical brake (4), the power of two motors is undertaken, after rotating speed coupling, power is passed to pinion carrier (14) by the inner planet row of rotor (8), and the power of pinion carrier (14) is passed to drive axle (11) through main reduction gear (12) by power.Mechanical brake (4) is in order to realize the switching between the various mode of operations of double-motor multi-model coupling drive configuration.This structure can reduce volume and the quality of drive system, improves the power density of system, and actv. is realized vehicle multiple-working mode and demand high power density.
Accompanying drawing explanation
Accompanying drawing is the integrated couple drive structure composition of this double-motor multi-mode constructional drawing.
The specific embodiment
Now further illustrate by reference to the accompanying drawings.
The present invention is comprised of closed-center system (1), controller (2) and controller (13), No. two motors (3), mechanical brake (4), a motor (15), main reduction gear (12) and drive axle (11).Wherein a motor (15) is comprised of motor casing (5), stator (6), gear ring rotor (8), magnet steel (7), satellite gear (9), sun wheel (10), pinion carrier (14).It is characterized in that a motor (15) and No. two motors (3) are coaxially arranged.The power of a motor (15) is through stator (6), pass to rotor gear ring rotor (8) by magnetic field, the power of No. two motors (3) passes to sun wheel (10) through mechanical brake (4), the power of two motors is undertaken, after rotating speed coupling, power is passed to pinion carrier (14) by the inner planet row of rotor (8), and the power of pinion carrier (14) is passed to drive axle (11) through main reduction gear (12) by power.Mechanical brake (4) is in order to realize the switching between the various mode of operations of double-motor multi-model coupling drive configuration.
Controller (2) and controller (13) are controlled mode of operation and the power output of a motor (15) and No. two motors (3), and the power output break-make of No. two motors (3) is specifically realized by mechanical brake (4).
By controlling mechanical brake (4), can obtain the multiple-working mode of double-motor, its assembled state is as shown in table 1, wherein " 1 " represents that mechanical brake is in lockup state, " 0 " represents that mechanical brake is in released state, " M " represents that motor adopts electronic control, " G " represents that motor adopts Generation Control, and " C " expression motor cuts out.
Table 1 mode of operation
No. one motor drives mode of operation: closed-center system (1) output energy, electric machine controller (13) is operated in electric model according to a motor of driver command control (15), No. two motors (12) quit work, a motor (15) outputting power through gear ring rotor (8), satellite gear (9), pinion carrier (14), main reduction gear (14), output to drive axle (11);
A motor regenerative brake mode of operation: electric machine controller (13) is controlled a motor (15) and is operated in power generation mode, vehicle inertia torque through drive axle (11), pinion carrier (14), pass to gear ring rotor (8), electric machine controller (13) is according to the electric energy generated of a car load regenerative brake control logic motor of control (15), and to export direct current (DC) be closed-center system (1) charging.
Motor rotating speed couple drive mode of operation: closed-center system (1) output energy, mechanical brake (4) release, electric machine controller is operated in motoring condition according to a motor of driver command control (15) and No. two motors (3), and a motor (15) power exports drive axle (11) to through gear ring rotor (8), satellite gear (9), pinion carrier (14).Then No. two motors (3) power export drive axle (11) to through mechanical brake (4), sun wheel (10), pinion carrier (14);
Motor rotating speed coupling regenerative brake mode of operation a: motor of motor controller controls (15) and No. two motors (3) are operated in generating state, vehicle inertia torque is through drive axle (11), shunting output after pinion carrier (14), one No. one, route sun wheel (10), mechanical brake (4) drags No. two motors (3) rotation, the satellite gear (9) of another route sun and planet gear, drag gear ring rotor (8) rotation of No. two motors, electric machine controller (13) is according to the electric energy generated of a car load regenerative brake control logic motor of control (15) and No. two motors (12), and to export direct current (DC) be closed-center system (1) charging.
The rotor structure of a motor (15) and planet row combine and have been coupled into a gear ring rotor (8), and it can be that an overall structure can be also detachable.The inside of rotor is a complete star gear mechanism, in system matches, can, according to the demand of torque, by the characteristic parameter of coupling planet row, realize and in the situation that not changing motor size of main body, increase the output torque that output shaft is pinion carrier (14).This integration mode can improve the power density of system and the compactedness of structure greatly.
After pinion carrier (14), connecting main reduction gear and differential assembly can be for driving conventional truck.After pinion carrier (14), connect wheel, with two, overlap these system synthesis and can realize bilateral individual drive, to meet the power demand of heavy-duty vehicle to high-power driving system.
No. two motors (3) can replace with traditional driving engine as propulsion source, and this Time Controller (2) no longer needs.Now this system can be operated in driving engine (3) and a motor (15) rotating speed couple drive pattern, and driving engine (3) drives and a motor (15) generating mode of operation, and a motor (15) is drive pattern separately, a motor regenerative brake pattern.When driving engine (3) and a motor (15) rotating speed couple drive pattern, mechanical brake (4) is removed locking, and power transfer path when power operated bang path drives with two motors in claim 3 is identical; When driving engine (3) driving and a motor (15) generating mode of operation, the power of driving engine (3) is via sun wheel (10), satellite gear (9), then divide two-way, lead up to pinion carrier (14), main reduction gear passes to drive axle, the gear ring rotor of separately leading up to is delivered to motor (15), electric machine controller (13) is according to the electric energy generated of a car load regenerative brake control logic motor of control (15), and to export direct current (DC) be closed-center system (1) charging; When a motor (15), separately the service condition of drive pattern and the service condition of a motor regenerative brake pattern and the motor (15) of claim 2 is identical.
From above principle of work, can find out, the integrated couple drive structure of this double-motor multi-mode can realize single motor driving, single motor braking regenerative braking, motor rotating speed couple drive, the multiple-working mode that motor rotating speed coupling braking energy reclaims, volume is little, compact conformation, and power density is high, can meet the high-power of vehicle, the driving demand of high power density.
Claims (6)
1. double-motor multi-mode power coupling drives an assembly, closed-center system (1), controller (2) and (13), No. two motors (3), mechanical brake (4), a motor (15), main reduction gear (12) and drive axle (11), consists of.Wherein a motor (15) is comprised of motor casing (5), stator (6), gear ring rotor (8), magnet steel (7), satellite gear (9), sun wheel (10), pinion carrier (14).It is characterized in that a motor (15) and No. two motors (3) are coaxially arranged.The power of a motor (15) is through stator (6), pass to rotor gear ring (8) by magnetic field, the power of No. two motors (3) passes to sun wheel (10) through mechanical brake (4), the power of two motors is undertaken, after rotating speed coupling, power is passed to pinion carrier (14) by the inner planet row of rotor (8), and the power of pinion carrier (14) is passed to drive axle (11) through main reduction gear (12) by power.Mechanical brake (4) is in order to realize the switching between the various mode of operations of double-motor multi-model coupling drive configuration.This structure can reduce volume and the quality of drive system, improves the power density of system, and actv. is realized vehicle multiple-working mode and demand high power density.
2. according to the described double-motor multi-mode of claim 1 power coupling, drive assembly, it is characterized in that: an electrical machine working mode is divided into a motor and drives mode of operation and an electric power generation mode of operation, under an electrical machine working mode, mechanical brake (4) locking sun wheel;
Wherein at a motor, drive under mode of operation, closed-center system (1) output energy, electric machine controller (13) is operated in electric model according to a motor of driver command control (15), No. two motors (12) quit work, a motor (15) outputting power through gear ring rotor (8), satellite gear (9), pinion carrier (14), main reduction gear (14), output to drive axle (11);
Under a motor regenerative brake mode of operation, electric machine controller (13) is controlled a motor (15) and is operated in power generation mode, vehicle inertia torque through drive axle (11), pinion carrier (14), pass to gear ring rotor (8), electric machine controller (13) is according to the electric energy generated of a car load regenerative brake control logic motor of control (15), and to export direct current (DC) be closed-center system (1) charging.
3. according to the described double-motor multi-mode of claim 1 power coupling, drive assembly, it is characterized in that: motor rotating speed coupling work mode is divided into rotating speed couple drive mode of operation and rotating speed coupled electricity-generation mode of operation, under rotating speed coupling work mode, mechanical brake (4) release sun wheel (10);
Motor rotating speed couple drive mode of operation, closed-center system (1) output energy, mechanical brake (4) release, electric machine controller is operated in motoring condition according to a motor of driver command control (15) and No. two motors (3), and a motor (15) power exports drive axle (11) to through gear ring rotor (8), satellite gear (9), pinion carrier (14).Then No. two motors (3) power export drive axle (11) to through mechanical brake (4), sun wheel (10), pinion carrier (14);
Regenerative brake motor rotating speed coupled electricity-generation mode of operation, a motor of motor controller controls (15) and No. two motors (3) are operated in generating state, vehicle inertia torque is through drive axle (11), shunting output after pinion carrier (14), one No. one, route sun wheel (10), mechanical brake (4) drags No. two motors (3) rotation, the satellite gear (9) of another route sun and planet gear, drag gear ring rotor (8) rotation of No. two motors, electric machine controller (13) is according to the electric energy generated of a car load regenerative brake control logic motor of control (15) and No. two motors (12), and to export direct current (DC) be closed-center system (1) charging.
4. according to the integrated couple drive assembly of the described double-motor multi-mode of claim 1, it is characterized in that: the rotor structure of a motor (15) and planet row combine and be coupled into a gear ring rotor (8), it can be that an overall structure can be also detachable.The inside of rotor is a complete sun and planet gear, in system matches, can, according to the demand of torque, by the characteristic parameter of coupling planet row, realize and in the situation that not changing motor size of main body, increase the output torque that output shaft is pinion carrier (14).This integration mode can improve the power density of system and the compactedness of structure greatly.
5. according to the integrated couple drive assembly of the described double-motor multi-mode of claim 1, it is characterized in that: after pinion carrier (14), connecting main reduction gear and differential assembly can be for driving conventional truck.After pinion carrier (14), connect wheel, with two, overlap these system synthesis and can realize bilateral individual drive, to meet the power demand of heavy-duty vehicle to high-power driving system.
6. according to the integrated couple drive assembly of the described double-motor multi-mode of claim 1, it is characterized in that: No. two motors (3) can replace with traditional driving engine as propulsion source, and this Time Controller (2) no longer needs.Now this system can be operated in driving engine (3) and a motor (15) rotating speed couple drive pattern, and driving engine (3) drives and a motor (15) generating mode of operation, and a motor (15) is drive pattern separately, a motor regenerative brake pattern;
When driving engine (3) and a motor (15) rotating speed couple drive pattern, mechanical brake (4) is removed locking, and power transfer path when power operated bang path drives with two motors in claim 3 is identical;
When driving engine (3) driving and a motor (15) generating mode of operation, the power of driving engine (3) is via sun wheel (10), satellite gear (9), then divide two-way, lead up to pinion carrier (14), main reduction gear passes to drive axle, the gear ring rotor of separately leading up to is delivered to motor (15), electric machine controller (13) is according to the electric energy generated of a car load regenerative brake control logic motor of control (15), and to export direct current (DC) be closed-center system (1) charging;
The service condition of the independent drive pattern of a motor (15) and the service condition of a motor regenerative brake pattern and the motor (15) of claim 2 is identical.
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| CN105034782A (en) * | 2015-09-10 | 2015-11-11 | 福建万润新能源科技有限公司 | Electric automobile multi-mode power system |
| CN105128700A (en) * | 2015-09-10 | 2015-12-09 | 福建工程学院 | Double-power system of electric vehicle and control method |
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| CN108340760A (en) * | 2017-01-19 | 2018-07-31 | 台州双擎动力科技有限公司 | A kind of pure electric vehicle power assembly system |
| CN106697040A (en) * | 2017-01-20 | 2017-05-24 | 长安大学 | Dual-motor coupling electric power-assisted steering device and control method thereof |
| CN107244377B (en) * | 2017-07-04 | 2019-08-06 | 李燊 | Wheel hub electric motor of electric vehicle and wheel hub electric motor of electric vehicle control method |
| CN110065585A (en) * | 2017-07-04 | 2019-07-30 | 台州中动科技有限公司 | The control method of wheel hub electric motor of electric vehicle and wheel hub electric motor of electric vehicle |
| CN107244377A (en) * | 2017-07-04 | 2017-10-13 | 李燊 | Electric car variable speed drive motor, wheel hub electric motor of electric vehicle and motor control method |
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| CN108561525A (en) * | 2018-05-07 | 2018-09-21 | 南京越博动力系统股份有限公司 | A kind of Dual-motors Driving bridge case of pure electric automobile |
| CN108382176A (en) * | 2018-05-09 | 2018-08-10 | 马东明 | A kind of driving device with coupling device |
| CN110001904A (en) * | 2019-04-12 | 2019-07-12 | 上海丰滋新能源船舶科技有限公司 | A kind of dual motors system for pure electric vehicle ship |
| CN110639957A (en) * | 2019-09-11 | 2020-01-03 | 唐山学院 | Alloy plate rolling equipment |
| CN113263905A (en) * | 2021-06-29 | 2021-08-17 | 奇瑞汽车股份有限公司 | Power drive system and control method |
| WO2023273004A1 (en) * | 2021-06-29 | 2023-01-05 | 奇瑞汽车股份有限公司 | Power-driven system and vehicle |
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Application publication date: 20140430 |