CN203543619U

CN203543619U - Double-motor coupling drive system of electric car

Info

Publication number: CN203543619U
Application number: CN201320779634.2U
Authority: CN
Inventors: 张运昌; 初亮; 王军年; 许楠; 郭崇; 富子丞; 李育宽
Original assignee: Jilin University
Current assignee: Jilin University
Priority date: 2013-11-29
Filing date: 2013-11-29
Publication date: 2014-04-16
Anticipated expiration: 2023-11-29

Abstract

The utility model discloses a double-motor coupling drive system of an electric car. The double-motor coupling drive system of the electric car solves the problems that the number of working modes is small, the device size is large, arrangement is difficult and the load rate of motors is low in the prior art. In the double-motor coupling drive system of the electric car, a main motor and an auxiliary motor are coaxially arranged on the two sides of the system, an output shaft of the main motor is connected with a second transmission gear, the second transmission gear is connected with a drive disc of a second clutch, a driven disc of the second clutch is connected with a sun wheel through a transmission shaft, the other end of the transmission shaft is connected with a driven disc of a third clutch, a drive disc of the third clutch is connected with an output shaft of the auxiliary motor, a first transmission gear is connected with a drive disc of a first clutch, a driven disc of the first clutch is connected with a third transmission gear, the third transmission gear is in external meshing with a gear at one end of a gear ring, one end of a lock-up device is connected with a gearbox shell, and the other end of the lock-up device is connected with the gear ring.

Description

A kind of electronlmobil double-motor coupling drive system

Technical field

The utility model belongs to new-energy automobile dynamic assembly component technology field, is specifically related to a kind of used for electric vehicle double-motor coupling drive system.

Background technology

Because the high efficient area of single motor-driven driving motor for electric automobile is fixed, the machine operation point of single motor fixed speed ratio transmission is non-adjustable, for meeting vehicle normally travelling under various operating modes, can cause requiring the most of operation point rate of load condensate of motor and the efficiency of coupling on the low side according to dynamic property.And when motor et out of order, vehicle cannot normally travel.The problems referred to above in view of traditional single motor driven electric car existence, double-motor coupling drive system is a kind of solution well, its advantage is that machine operation point is adjustable, can make full use of the high efficient area separately of two motors, and when a motor breaks down, guarantee that automobile can normally travel.

The Chinese patent that application number is 201210024534.9 provides a kind of electronlmobil double-motor couple drive and control system thereof, by one group of sun and planet gear, one group of gear drive, two drive motor, a mechanical brake, two power-transfer clutchs, formed, by can realize torque coupling output, rotating speed coupling and the independent driver output of main motor of double-motor to jointly controlling of two power-transfer clutchs and a mechanical brake.Power failure-free gearshift when this scheme has realized Vehicle Driving Cycle; When low speed, by double-motor torque coupling, realize large torque and export, during high speed, by motor rotating speed, be coupled and realize high rotating speed and export.But under the little torque operating mode of low speed, automobile is driven by main motor, because main motor load rate is lower, cause the economy of this configuration in the little torque situation of low speed not obvious; Under rotating speed coupled mode, the torque distribution of two motors is unreasonable, and high-speed working condition economy is not obvious; And because two motors adopt parallel axis arrangement, for guaranteeing suitable distance between shafts, cause device volume larger.

Application number is that 201010100671.7 Chinese patent discloses a kind of electric driver that is suitable for the motor rotating speed coupling of pure electric coach, and You Yizu simple planetary mechanism, two drive motor, a mechanical brake form.During low speed, mechanical brake is by gear ring locking, and No. one motor power is exported by pinion carrier through sun wheel, and No. one motor drives separately; During high speed, gear ring release, the second motor is connected with planetary mechanism gear ring, realizes rotating speed be coupled with the first motor by planetary mechanism.This scheme is simple in structure, by rotating speed under high-speed case, is coupled, and can reduce separate unit power of motor.Shortcoming is that mode of operation is few, during vehicle low speed, can only be driven separately by the first motor, and this just requires the first motor torque capacity to want large; Under the little torque operating mode of low speed, because rate of load condensate is on the low side, No. one motor drives the economy of configuration also also not obvious.

Summary of the invention

The purpose of this utility model is to overcome the problem that mode of operation is few, device volume large, layout difficult, motor load rate is low that prior art exists, a kind of electronlmobil double-motor coupling drive system is provided, this novel coaxially arranged double-motor multi-mode drive system, by combination and the disengagement of actuating unit, select different driving and power generation mode, can be applicable to the various operating modes of Vehicle Driving Cycle.

The utility model is to adopt following technical scheme to realize, by reference to the accompanying drawings:

A kind of electronlmobil double-motor coupling drive system is provided, comprises main motor 1, helper motor 2, gear drive, power-transfer clutch 5, No. two power-transfer clutchs 6, No. three transmission gears 7, mechanical brake 10, No. three power-transfer clutchs 11, sun and planet gear and transmission shafts 15; Gear drive is comprised of a transmission gear 3 and No. two transmission gears 4 of external toothing, and sun and planet gear comprises gear ring 8, sun wheel 9, satellite gear 12 and pinion carrier 13; Wherein, main motor 1 and helper motor 2 are coaxially arranged in system both sides, the output shaft of main motor 1 is connected with No. two transmission gears 4, No. two transmission gear 4 is connected with the driving disc spacing pressing of No. two power-transfer clutchs 6, the clutch plate of No. two power-transfer clutchs 6 is connected by transmission shaft 15 with the sun wheel of sun and planet gear 9, the other end of transmission shaft is connected with the clutch plate of No. three power-transfer clutchs 11, and the driving disc spacing pressing of No. three power-transfer clutchs 11 is connected with the output shaft of helper motor 2; No. one transmission gear 3 is connected with the driving disc spacing pressing of a power-transfer clutch 5, and the clutch plate of a power-transfer clutch 5 is connected with No. three transmission gears 7, one end gear external toothing of No. three transmission gears 7 and the gear ring 8 of sun and planet gear; Mechanical brake 10 one end are connected with gear box casing, and the other end is connected with gear ring 8.

The improvement project of a kind of electronlmobil double-motor coupling drive system providing as the utility model, the output shaft of described main motor 1 is connected by flange with the gear wheel shaft of described No. two transmission gears 4, the driving disc spacing pressing endoporus of No. two transmission gear 4 end flange and described No. two power-transfer clutchs 6 passes through spline joint, spline joint is passed through in the clutch plate endoporus of No. two power-transfer clutchs 6 and described transmission shaft 15 one end, sun wheel 9 endoporus and the transmission shaft 15 of described sun and planet gear pass through spline joint, the clutch plate endoporus spline joint of transmission shaft 15 other ends and described No. three power-transfer clutchs 11, the driving disc spacing pressing endoporus of No. three power-transfer clutchs 11 and the output shaft of described helper motor 2 pass through spline joint, described No. two transmission gears 4 and described transmission gear 3 external toothings, the driving disc spacing pressing endoporus of transmission gear 3 end flange and a power-transfer clutch 5 passes through spline joint, the clutch plate endoporus of a power-transfer clutch 5 and the shaft end of described No. three transmission gears 7 be by spline joint, one end gear external toothing of No. three transmission gears 7 and the gear ring 8 of sun and planet gear, the driving disc spacing pressing endoporus of described mechanical brake 10 and gear box casing end flange are by spline joint, and the clutch plate endoporus of mechanical brake 10 and described gear ring 8 end flange are passed through spline joint.

The improvement project of a kind of electronlmobil double-motor coupling drive system providing as the utility model, this system also comprises drive axle 14, the Driven Gear of Final Reduction Gear of

drive axle

14 and 13 external toothings of described pinion carrier.

The improvement project of a kind of electronlmobil double-motor coupling drive system providing as the utility model, a described power-transfer clutch 5, No. two power-transfer clutchs 6 and mechanical brake 10 are bidirectional clutch, and No. three power-transfer clutch 11 is bidirectional clutch or free-wheel clutch.

For overcoming the above problems, the utility model provides another kind of technical scheme simultaneously:

A kind of electronlmobil double-motor coupling drive system is provided, comprises main motor 1, helper motor 2, gear drive, power-transfer clutch 5, No. two power-transfer clutchs 6, No. three transmission gears 7, mechanical brake 10, No. three power-transfer clutchs 11, sun and planet gear and transmission shafts 15, gear transmission mechanism is comprised of a transmission gear 3 and No. two transmission gears 4 of external toothing, and sun and planet gear comprises gear ring 8, sun wheel 9, satellite gear 12 and pinion carrier 13, wherein, main motor 1 and helper motor 2 are coaxially arranged at system homonymy, and helper motor 2 is positioned at the outside of main motor 1, main motor 1 rotor shaft is interior sky, the output shaft of helper motor 2 is through the rotor shaft endoporus of main motor 1, the rotor shaft of main motor 1 is connected with No. two transmission gears 4, No. two transmission gear 4 is connected with the driving disc spacing pressing of No. two power-transfer clutchs 6, the clutch plate of No. two power-transfer clutchs 6 is connected by transmission shaft 15 one end with the sun wheel of sun and planet gear 9, the other end of transmission shaft is connected with the clutch plate of No. three power-transfer clutchs 11, the driving disc spacing pressing of No. three power-transfer clutchs 11 is connected with the output shaft of helper motor 2, No. one transmission gear 3 is connected with the driving disc spacing pressing of a power-transfer clutch 5, and the clutch plate of a power-transfer clutch 5 is connected with No. three transmission gears 7, one end gear external toothing of No. three transmission gears 7 and the gear ring 8 of sun and planet gear, mechanical brake 10 one end are connected with gear box casing, and the other end is connected with gear ring 8.

The improvement project of a kind of electronlmobil double-motor coupling drive system providing as the utility model, the rotor shaft of described main motor 1 is connected by flange with the gear wheel shaft of described No. two transmission gears 4, the driving disc spacing pressing endoporus of No. two transmission gear 4 end flange and described No. two power-transfer clutchs 6 passes through spline joint, clutch plate endoporus and the described transmission shaft 15 of No. two power-transfer clutchs 6 pass through spline joint, spline joint is passed through in sun wheel 9 endoporus and transmission shaft 15 one end of described sun and planet gear, the clutch plate endoporus spline joint of transmission shaft 15 other ends and described No. three power-transfer clutchs 11, the driving disc spacing pressing endoporus of No. three power-transfer clutchs 11 and the output shaft of described helper motor 2 pass through spline joint, described No. two transmission gears 4 and described transmission gear 3 external toothings, the driving disc spacing pressing endoporus of transmission gear 3 end flange and a power-transfer clutch 5 passes through spline joint, the clutch plate endoporus of a power-transfer clutch 5 and the shaft end of described No. three transmission gears 7 be by spline joint, one end gear external toothing of No. three transmission gears 7 and the gear ring 8 of sun and planet gear, the driving disc spacing pressing endoporus of described mechanical brake 10 and gear box casing end flange are by spline joint, and the clutch plate endoporus of mechanical brake 10 and described gear ring 8 end flange are passed through spline joint.

The improvement project of the another kind of solution of a kind of electronlmobil double-motor coupling drive system providing as the utility model, this system also comprises drive axle 14, the Driven Gear of Final Reduction Gear of

drive axle

14 and 13 external toothings of described pinion carrier.

The improvement project of a kind of electronlmobil double-motor coupling drive system providing as the utility model, a described power-transfer clutch 5, No. two power-transfer clutchs 6 and mechanical brake 10 are bidirectional clutch, and described No. three power-transfer clutchs 11 are free-wheel clutch or bidirectional clutch.

The beneficial effect that compared with prior art the utility model has is:

1. torque in the little torque operating mode of low speed, high speed, low speed high torque and high-speed working condition can adopt respectively helper motor 2 drivings, 1 driving of main motor, double-motor torque coupling and motor rotating speed coupling work mode, torque and the power capability of single motor not only can be reduced, the economy advantage of double-motor couple drive can be given full play to again.

2. under rotating speed couple drive operating mode, the power of main motor outputs to gear ring, and the power of helper motor outputs to sun wheel, can the main motor of reasonable distribution and the torque of helper motor, improve the economy of high-speed working condition.

3. two motor employings are coaxially arranged, can reduce the size of device, and arrangement is more flexible.

Accompanying drawing explanation

Fig. 1 is that double-motor coupling drive system forms structural representation;

Fig. 2 is that the system that double-motor homonymy is arranged forms structural representation;

In figure: 1. main motor, 2. helper motor, 3. a transmission gear, 4. No. two transmission gears, 5. a power-transfer clutch, 6. No. two power-transfer clutchs, 7. No. three transmission gears, 8. gear ring, 9. sun wheel, 10. mechanical brake, 11. No. three power-transfer clutchs, 12. satellite gears, 13. pinion carriers, 14. drive axles, 15. transmission shafts.

The specific embodiment

Below in conjunction with accompanying drawing, the utility model is explained in detail.

Embodiment 1

Consult Fig. 1, a kind of electronlmobil double-motor coupling drive system that the utility model provides, by main motor 1, helper motor 2, gear transmission mechanism, power-transfer clutch 5, No. two power-transfer clutchs 6, No. three transmission gears 7, mechanical brake 10, No. three power-transfer clutchs 11, sun and planet gear, drive axle 14 and transmission shafts 15, formed, gear drive is comprised of a transmission gear 3 and No. two transmission gears 4 of external toothing, and sun and planet gear comprises gear ring 8, sun wheel 9, satellite gear 12 and pinion carrier 13.Main motor 1 is coaxially arranged in system both sides with helper motor 2, the output shaft of main motor 1 is connected by flange with the gear wheel shaft of No. two transmission gears 4, the driving disc spacing pressing endoporus of No. two transmission gear 4 end flange and No. two power-transfer clutchs 6 passes through spline joint, spline joint is passed through in the clutch plate endoporus of No. two power-transfer clutchs 6 and transmission shaft 15 one end, sun wheel 9 endoporus and the transmission shaft 15 of sun and planet gear pass through spline joint, the clutch plate endoporus spline joint of transmission shaft 15 other ends and No. three power-transfer clutchs 11, the driving disc spacing pressing endoporus of No. three power-transfer clutchs 11 and the output shaft of helper motor 2 pass through spline joint.No. two transmission gears 4 and a transmission gear 3 are by external toothing transferring power, the driving disc spacing pressing endoporus of transmission gear 3 end flange and a power-transfer clutch 5 passes through spline joint, the clutch plate endoporus of a power-transfer clutch 5 and the shaft end of No. three transmission gears 7 be by spline joint, No. three transmission gears 7 with one end gear of the gear ring 8 of sun and planet gear by external toothing transfer motion power.Driving disc spacing pressing endoporus and the gear box casing end flange of mechanical brake 10 are passed through spline joint, the clutch plate endoporus of mechanical brake 10 and gear ring 8 end flange are passed through spline joint, pinion carrier 13 is with the Driven Gear of Final Reduction Gear of drive axle 14 by external toothing transferring power, and power exports drive axle 14 to by pinion carrier 13 and drives Vehicle Driving Cycle.Power-transfer clutch 5, No. two power-transfer clutchs 6 and mechanical brake 10 are all bidirectional clutches, by 3 to 5 driving disc spacing pressings and clutch plate vertically successively interval stack and form, No. three power-transfer clutch 11 can adopt bidirectional clutch or free-wheel clutch.

The principle of work of a kind of electronlmobil double-motor coupling drive system that the utility model provides is: the power of main motor 1 output is through No. two power-transfer clutchs 6, sun wheel 9, exports drive axle 14 to realize power and export by pinion carrier 13, realizes main motor 1 and drives separately; The power of helper motor 2 output is through No. three power-transfer clutchs 11, sun wheel 9, exports drive axle 14 to realize power and export by pinion carrier 13, realizes helper motor 2 and drives separately; The power of main motor 1 and helper motor 2 is coupled to sun wheel 9 through No. two power-transfer clutchs 6 and No. three power-transfer clutchs 11 respectively, by pinion carrier 13, exports drive axle 14 outputs to, realizes the torque coupling of main motor 1 and helper motor 2; The power of main motor 1 output through No. two transmission gears 4, transmission gear 3, a power-transfer clutch 5 and No. three transmission gears 7 to gear ring 8, the power of helper motor 2 outputs outputs to sun wheel through No. three power-transfer clutchs 11, power coupling exports drive axle 14 to by pinion carrier 13, realizes the rotating speed coupling of main motor 1 and helper motor 2.

The joint of double-motor coupling drive system by power-transfer clutch 5, No. two power-transfer clutchs 6, No. three power-transfer clutchs 11 and mechanical brake 10 and throw off and can realize the switching between various mode of operations, assembled state is as shown in table 1, in table, " ON " represent power-transfer clutch in engagement state or mechanical brake in lockup state, " OFF " represents that power-transfer clutch or mechanical brake are in disengaged condition, " M " represents that electrical motor adopts electronic control, " G " represents that electrical motor adopts Generation Control, and " C " expression electrical motor is closed.Table 1 is the mode of operation tables of four power elements under various mode of operations.

Table 1 power element mode of operation table

In this scheme, No. three power-transfer clutch 11 can adopt bidirectional clutch or free-wheel clutch, if No. three power-transfer clutchs 11 adopt bidirectional clutch, the mode of operation of electronlmobil double-motor coupling drive system is as follows:

Main motor drives mode of operation: No. two power-transfer clutch 6 engages, power-transfer clutch 5, No. three power-transfer clutchs 11 are thrown off, mechanical brake 10 lockings, main motor 1 is in motoring condition, the power of main motor 1 output is through No. two power-transfer clutchs 6, by sun wheel 9, inputted, by pinion carrier 13, export drive axle 14 to, drive Vehicle Driving Cycle.Under this pattern, helper motor 2 is in stopped status, and main motor 1 works independently, and drives Vehicle Driving Cycle.Power and the torque of main motor 1 are larger, and rated speed of rotation and torque rating are also larger, and therefore main motor 1 drives and is applicable to the operating mode that the speed of a motor vehicle is not too high and torque is not too large separately, can make so main motor 1 be operated in as far as possible between its high efficient area.

Helper motor drives mode of operation: No. three power-transfer clutch 11 engages, power-transfer clutch 5, No. two power-transfer clutchs 6 are thrown off, mechanical brake 10 lockings, helper motor 2 is in motoring condition, the power of helper motor 2 outputs exports drive axle 14 to through No. three power-transfer clutchs 11, sun wheel 9, pinion carriers 13, drives Vehicle Driving Cycle.Under this pattern, main motor 1 is in stopped status, and helper motor 2 works independently, and drives Vehicle Driving Cycle.Power and the torque of helper motor 2 are less, rated speed of rotation and torque rating are also less, so helper motor 2 drives and is applicable to the speed of a motor vehicle and the less operating mode of torque separately, the shortcoming of so just having avoided the conventional electric automobile list motor driving economy that easily phenomenon of the low load with strong power of appearance causes to decline.Can make like this helper motor 2 be operated in as far as possible between its high efficient area.

Double-motor torque coupling drives mode of operation: No. two power-transfer clutchs 6, No. three power-transfer clutchs 11 engage, and No. one power-transfer clutch 5 is thrown off, mechanical brake 10 lockings, main motor 1 is in motoring condition, the power of main motor 1 output through No. two power-transfer clutchs 6 to sun wheel 9; Helper motor 2 is in motoring condition, the power of helper motor 2 outputs through No. three power-transfer clutchs 11 to the power of 9, two motors outputs of sun wheel after sun wheel 9 couplings, through pinion carrier 13, export drive axle 14 to, drive Vehicle Driving Cycle.Double-motor torque coupling drives mode of operation to be applicable to low speed climbing or the anxious large torque operating mode of slow speed of revolution of accelerating of low speed, by the torque coupling of two motors, can greatly reduce the torque capacity of motor, not only convenient on manufacturing, and can pass through two rational torque distribution of motor, give full play to the high efficiency of each motor.

Motor rotating speed couple drive mode of operation: power-transfer clutch 5, No. three power-transfer clutchs 11 engage, No. two power-transfer clutch 6 is thrown off, mechanical brake 10 is thrown off, main motor 1 is in motoring condition, and the power of main motor 1 output is delivered to planet row gear ring 8 through No. two transmission gears 4, transmission gear 3, power-transfer clutch 5, No. three transmission gears 7 successively; Helper motor 2 is in motoring condition, and the power of helper motor 2 outputs carries out, after rotating speed coupling, by pinion carrier 13, exporting drive axle 14 to the power by 9, two motors of sun wheel through No. three power-transfer clutchs 11, drives Vehicle Driving Cycle.Rotating speed couple drive mode of operation is applicable to running at high speed of vehicle, we are by the rotating speed couple drive of two motors, can reduce greatly rotating speed and the power capability of single motor, and can, by reasonably distributing the rotating speed of two motors, give full play to the high efficiency of each motor.

Main motor regenerative brake mode of operation: No. two power-transfer clutch 6 engages, power-transfer clutch 5, No. three power-transfer clutchs 11 are thrown off, mechanical brake 10 lockings, main motor 1 is operated in power generation mode, the inertia torque of vehicle drags main motor 1 and rotates through drive axle 14, pinion carrier 13, sun wheel 9, No. two power-transfer clutchs 6 successively, and the electrical power storage of main motor 1 output is in energy storage equipment.Under this pattern, helper motor 2 is in stopped status, and main motor 1 works independently, and carries out braking energy recovery.Power and the torque of main motor 1 are larger, rated speed of rotation and torque rating are also larger, therefore when when main motor regenerative brake mode of operation is applicable to vehicle braking energy and reclaims, not too large, the speed of a motor vehicle of motor braking moment is not too high, can improve like this efficiency that braking energy reclaims motor, improve energy recovery utilization rate.

Helper motor regenerative brake mode of operation: No. three power-transfer clutch 11 engages, power-transfer clutch 5, No. two power-transfer clutchs 6 are thrown off, mechanical brake 10 lockings, helper motor 2 is in power generation mode, the inertia torque of vehicle takes turns to drive axle 14, pinion carrier 13, sun wheel 9 through driving successively, No. three power-transfer clutchs 11 drag helper motor 2 and rotate, and the electrical power storage of helper motor 2 outputs is in energy storage equipment.Under this pattern, main motor 1 is in stopped status, and helper motor 2 works independently, and carries out braking energy recovery.Power and the torque of helper motor 2 are less, rated speed of rotation and torque rating are also less, when when helper motor regenerative brake mode of operation is applicable to vehicle braking energy and reclaims, less, the speed of a motor vehicle of motor braking moment is lower, can improve like this efficiency that braking energy reclaims motor, improve energy recovery utilization rate.

Double-motor torque coupling regenerative brake mode of operation: No. two power-transfer clutchs 6, No. three power-transfer clutchs 11 engage, No. one power-transfer clutch 5 is thrown off, mechanical brake 10 lockings, main motor 1 and helper motor 2 are in power generation mode, inertia torque one tunnel of vehicle drags main motor 1 and rotates through drive axle 14, pinion carrier 13, sun wheel 9, No. two power-transfer clutchs 6, another road drags helper motor 2 and rotates through drive axle 14, pinion carrier 13, sun wheel 9, No. three power-transfer clutchs 11, and the electric energy of main motor 1 and helper motor 2 outputs is deposited in energy storage equipment.Double-motor torque coupling regenerative brake mode of operation is applicable to the larger operating mode of motor braking power, and for example downhill braking or emergency braking operating mode, by the torque coupling of two motors and the reasonable distribution of two motor braking moments, make full use of the efficiency of motor.

Motor rotating speed coupling regenerative brake pattern a: power-transfer clutch 5, No. three power-transfer clutch 11 engages, No. two power-transfer clutch 6 is thrown off, mechanical brake 10 is thrown off, main motor 1 and helper motor 2 are in power generation mode, inertia torque one tunnel of vehicle takes turns to drive axle 14 through driving, pinion carrier 13, gear ring 8, No. three transmission gears 7, a power-transfer clutch 5, a transmission gear 3, No. two transmission gear 4 drags main motor 1 rotation, another road takes turns to drive axle 14 through driving, pinion carrier 13, sun wheel 9, No. three power-transfer clutch 11 drags helper motor 2 rotations, the electric energy of main motor 1 and helper motor 2 outputs is deposited in energy storage equipment.Motor rotating speed coupling regenerative brake mode of operation is applicable to the damped condition of speed of a motor vehicle when higher, and we make full use of the efficiency of motor by torque coupling and two motor speed reasonable distribution of two motors.

If No. three power-transfer clutch 11 adopts free-wheel clutch, now, helper motor 2 does not participate in regenerative brake, regenerative brake pattern is only main motor regenerative brake pattern, and the mode of operation of this technical scheme becomes main motor driving, helper motor driving, the driving of double-motor torque coupling, motor rotating speed couple drive and five kinds of mode of operations of main motor regenerative brake.

Embodiment 2

Consult Fig. 2, the another kind of scheme of a kind of electronlmobil double-motor coupling drive system that the utility model provides, by main motor 1, helper motor 2, gear transmission mechanism, power-transfer clutch 5, No. two power-transfer clutchs 6, No. three transmission gears 7, mechanical brake 10, No. three power-transfer clutchs 11, sun and planet gear, drive axle 14 and transmission shafts 15, formed, gear drive is comprised of a transmission gear 3 and No. two transmission gears 4 of external toothing, and sun and planet gear comprises gear ring 8, sun wheel 9, satellite gear 12 and pinion carrier 13.Main motor 1 is coaxially arranged in system the same side with helper motor 2, and helper motor 2 is positioned at the outside of main motor 1, the rotor shaft of main motor 1 is interior sky, the output shaft of helper motor 2 is through the rotor shaft endoporus of main motor 1, the rotor shaft of main motor 1 is connected by flange with the gear wheel shaft of No. two transmission gears 4, the driving disc spacing pressing endoporus of No. two transmission gear 4 end flange and No. two power-transfer clutchs 6 passes through spline joint, spline joint is passed through in the clutch plate endoporus of No. two power-transfer clutchs 6 and transmission shaft 15 one end, spline joint is passed through in sun wheel 9 endoporus and transmission shaft 15 one end of sun and planet gear, the clutch plate endoporus spline joint of transmission shaft 15 other ends and No. three power-transfer clutchs 11, the driving disc spacing pressing endoporus of No. three power-transfer clutchs 11 and the output shaft of helper motor 2 pass through spline joint.No. two transmission gears 4 and a transmission gear 3 are by external toothing transferring power, the driving disc spacing pressing endoporus of transmission gear 3 end flange and a power-transfer clutch 5 passes through spline joint, the clutch plate endoporus of a power-transfer clutch 5 and the shaft end of No. three transmission gears 7 be by spline joint, No. three transmission gears 7 with one end gear of the gear ring 8 of sun and planet gear by external toothing transfer motion power.Driving disc spacing pressing endoporus and the gear box casing end flange of mechanical brake 10 are passed through spline joint, the clutch plate endoporus of mechanical brake 10 and gear ring 8 end flange are passed through spline joint, pinion carrier 13 is with the Driven Gear of Final Reduction Gear of drive axle 14 by external toothing transferring power, and power exports drive axle 14 to by pinion carrier 13 and drives Vehicle Driving Cycle.Power-transfer clutch 5, No. two power-transfer clutchs 6 and mechanical brake 10 are all bidirectional clutches, and No. three power-transfer clutch 11 can adopt bidirectional clutch or free-wheel clutch.

The principle of work of this technical scheme is: the power of main motor 1 output is through No. two power-transfer clutchs 6, sun wheel 9, exports drive axle 14 to realize power and export by pinion carrier 13, realizes main motor 1 and drives separately; The power of helper motor 2 output is through No. three power-transfer clutchs 11, sun wheel 9, exports drive axle 14 to realize power and export by pinion carrier 13, realizes helper motor 2 and drives separately; The power of main motor 1 and helper motor 2 is coupled to sun wheel 9 through No. two power-transfer clutchs 6 and No. three power-transfer clutchs 11 respectively, by pinion carrier 13, exports drive axle 14 outputs to, realizes the torque coupling of main motor 1 and helper motor 2; The power of main motor 1 output through No. two transmission gears 4, transmission gear 3, a power-transfer clutch 5 and No. three transmission gears 7 to gear ring 8, the power of helper motor 2 outputs outputs to sun wheel through No. three power-transfer clutchs 11, power coupling exports drive axle 14 to by pinion carrier 13, realizes the rotating speed coupling of main motor 1 and helper motor 2.

Helper motor drives mode of operation: No. three power-transfer clutch 11 engages, power-transfer clutch 5, No. two power-transfer clutchs 6 are thrown off, mechanical brake 10 lockings, helper motor 2 is in motoring condition, the power of helper motor 2 outputs exports drive axle 14 to through No. three power-transfer clutchs 11, sun wheel 9, pinion carriers 13, drives Vehicle Driving Cycle.Under this pattern, main motor 1 is in stopped status, and helper motor 2 works independently, and drives Vehicle Driving Cycle.Power and the torque of helper motor 2 are less, rated speed of rotation and torque rating are also less, so helper motor 2 drives and is applicable to the speed of a motor vehicle and the less operating mode of torque separately, the shortcoming of so just having avoided the conventional electric automobile list motor driving economy that easily phenomenon of the low load with strong power of appearance causes to decline.Now can make helper motor 2 be operated in as far as possible between its high efficient area.

Motor rotating speed coupling regenerative brake pattern a: power-transfer clutch 5, No. three power-transfer clutch 11 engages, No. two power-transfer clutch 6 is thrown off, mechanical brake 10 is thrown off, main motor 1 and helper motor 2 are in power generation mode, inertia torque one tunnel of vehicle takes turns to drive axle 14 through driving, pinion carrier 13, gear ring 8, No. three transmission gears 7, a power-transfer clutch 5, a transmission gear 3, No. two transmission gear 4 drags main motor 1 rotation, another road takes turns to drive axle 14 through driving, pinion carrier 13, sun wheel 9, No. three power-transfer clutch 11 drags helper motor 2 rotations, the electric energy of main motor 1 and helper motor 2 outputs is deposited in energy storage equipment.Motor rotating speed coupling regenerative brake mode of operation is applicable to the damped condition of speed of a motor vehicle when larger, and we make full use of the efficiency of motor by torque coupling and two motor speed reasonable distribution of two motors.

Comprehensive above embodiment, a kind of double-motor coupling drive system provided by the utility model is not only applicable to pure electric automobile, also be adapted to hybrid vehicle, wherein, main motor 1 and helper motor 2 also can replace to other propulsions source, as: fuel engines, gas engine, HM Hydraulic Motor etc., and propulsion source can identically can be also hybrid power source; In addition, pinion carrier 13 outputs do not limit and connect drive axle 14, can connect change speed gear box yet, realize more multi-operation mode.

A kind of double-motor coupling drive system provided by the utility model can realize that main motor drives separately, helper motor drives separately, the driving of double-motor torque coupling, motor rotating speed couple drive, main motor regenerative brake, helper motor regenerative brake, double-motor torque coupling regenerative brake, motor rotating speed coupling regenerative brake multiple-working mode, meet the dynamic property demand of car load, make full use of motor high efficient area, better bring into play the economy of electronlmobil.

Claims

1. A dual-motor coupling drive system for an electric vehicle, including a main motor (1), an auxiliary motor (2), a gear transmission mechanism, a No. 1 clutch (5), a No. 2 clutch (6), and a No. 3 transmission gear (7) , locker (10), No. 3 clutch (11), planetary gear mechanism and transmission shaft (15); the gear transmission mechanism is composed of No. 1 transmission gear (3) and No. 2 transmission gear (4) with external meshing. The gear mechanism includes a ring gear (8), a sun gear (9), a planetary gear (12) and a planetary carrier (13); it is characterized in that the main motor (1) and the auxiliary motor (2) are coaxially arranged on both sides of the system. side, the output shaft of the main motor (1) is connected to the No. 2 transmission gear (4), the No. 2 transmission gear (4) is connected to the driving disc of the No. The sun gear (9) of the planetary gear mechanism is connected through the transmission shaft (15), the other end of the transmission shaft is connected with the driven disc of the No. 3 clutch (11), and the driving disc of the No. 3 clutch (11) is connected with the auxiliary motor (2) The output shaft of the No. 1 clutch (5) is connected with the driving disc of the No. 1 clutch (5), the driven disc of the No. 1 clutch (5) is connected with the No. 3 transmission gear (7), and the No. 3 transmission gear (7 ) is externally meshed with one end of the ring gear (8) of the planetary gear mechanism; one end of the locker (10) is connected to the gearbox case, and the other end is connected to the ring gear (8).

2. A dual-motor coupling drive system for electric vehicles according to claim 1, characterized in that the output shaft of the main motor (1) and the gear shaft of the second transmission gear (4) pass through a flange connection, the end flange of the No. 2 transmission gear (4) is splined to the inner hole of the driving disc of the No. 2 clutch (6), and the inner hole of the driven disc of the No. 2 clutch (6) is connected to the drive shaft ( 15) One end is connected by a spline, the inner hole of the sun gear (9) of the planetary gear mechanism is connected to the drive shaft (15) by a spline, and the other end of the drive shaft (15) is connected to the slave of the No. 3 clutch (11) The inner hole of the moving disc is splined, and the inner hole of the driving disc of the third clutch (11) is splined to the output shaft of the auxiliary motor (2); the second transmission gear (4) is connected to the first transmission gear ( 3) External meshing, the flange at the end of the No. 1 transmission gear (3) is splined to the inner hole of the driving disc of the No. 1 clutch (5), and the inner hole of the driven disc of the No. 1 clutch (5) is connected to the inner hole of the No. The shaft end of the transmission gear (7) is connected by a spline, and the third transmission gear (7) is externally meshed with the gear at one end of the ring gear (8) of the planetary gear mechanism; the inner hole of the driving disc of the locker (10) It is spline-connected with the end flange of the transmission case, and the inner hole of the driven disk of the locker (10) is spline-connected with the end flange of the ring gear (8).

3. A dual-motor coupling drive system for an electric vehicle as claimed in claim 1, characterized in that the dual-motor coupling drive system for an electric vehicle further comprises a drive axle (14), the final reducer gear of the drive axle (14) and The planet carrier (13) is externally engaged.

4. A dual-motor coupling drive system for an electric vehicle according to claim 1, characterized in that the No. 1 clutch (5), the No. 2 clutch (6) and the lock-up device (10) are all two-way clutches, The No. 3 clutch (11) is a one-way clutch or a two-way clutch.

5. The electric vehicle dual-motor coupling drive system according to claim 1, characterized in that, both the main motor (1) and the auxiliary motor (2) can be replaced by other types of power sources, and the other types The power source is selected from a fuel engine, a gas engine and a hydraulic motor.

6. A dual-motor coupling drive system for an electric vehicle, including a main motor (1), an auxiliary motor (2), a gear transmission mechanism, a No. 1 clutch (5), a No. 2 clutch (6), and a No. 3 transmission gear (7) , locker (10), No. 3 clutch (11), planetary gear mechanism and transmission shaft (15); the gear transmission mechanism is composed of No. 1 transmission gear (3) and No. 2 transmission gear (4) with external meshing. The gear mechanism includes a ring gear (8), a sun gear (9), a planetary gear (12) and a planet carrier (13); it is characterized in that the main motor (1) and the auxiliary motor (2) are coaxially arranged on the same side, and the auxiliary motor (2) is located outside the main motor (1), the rotor shaft of the main motor (1) is hollow, and the output shaft of the auxiliary motor (2) passes through the inner hole of the rotor shaft of the main motor (1), The rotor shaft of the main motor (1) is connected to the No. 2 transmission gear (4), the No. 2 transmission gear (4) is connected to the driving disc of the No. 2 clutch (6), and the driven disc of the No. 2 clutch (6) is connected to the planetary gear The sun gear (9) of the mechanism is connected through one end of the transmission shaft (15), the other end of the transmission shaft is connected with the driven disc of the No. 3 clutch (11), and the driving disc of the No. The output shaft is connected; the No. 1 transmission gear (3) is connected with the driving disc of the No. 1 clutch (5), the driven disc of the No. 1 clutch (5) is connected with the No. 3 transmission gear (7), and the No. 3 transmission gear (7) It is externally meshed with one end of the ring gear (8) of the planetary gear mechanism; one end of the locker (10) is connected to the gearbox housing, and the other end is connected to the ring gear (8).

7. A dual-motor coupling drive system for an electric vehicle according to claim 6, characterized in that the rotor shaft of the main motor (1) and the gear shaft of the second transmission gear (4) pass through a flange connection, the end flange of the No. 2 transmission gear (4) is splined to the inner hole of the driving disc of the No. 2 clutch (6), and the inner hole of the driven disc of the No. 2 clutch (6) is connected to the drive shaft ( 15) Through spline connection, the inner hole of the sun gear (9) of the planetary gear mechanism is connected to one end of the transmission shaft (15) through a spline connection, and the other end of the transmission shaft (15) is connected to the slave of the No. 3 clutch (11) The inner hole of the moving disc is splined, and the inner hole of the driving disc of the third clutch (11) is splined to the output shaft of the auxiliary motor (2); the second transmission gear (4) is connected to the first transmission gear ( 3) External meshing, the flange at the end of the No. 1 transmission gear (3) is splined to the inner hole of the driving disc of the No. 1 clutch (5), and the inner hole of the driven disc of the No. 1 clutch (5) is connected to the inner hole of the No. The shaft end of the transmission gear (7) is connected by a spline, and the third transmission gear (7) is externally meshed with the gear at one end of the ring gear (8) of the planetary gear mechanism; the inner hole of the driving disc of the locker (10) It is spline-connected with the end flange of the transmission case, and the inner hole of the driven disk of the locker (10) is spline-connected with the end flange of the ring gear (8).

8. A dual-motor coupling drive system for an electric vehicle as claimed in claim 6, characterized in that the dual-motor coupling drive system for an electric vehicle further comprises a drive axle (14), the final reducer gear of the drive axle (14) and The planet carrier (13) is externally engaged.

9. A dual-motor coupling drive system for an electric vehicle according to claim 6, characterized in that the No. 1 clutch (5), the No. 2 clutch (6) and the lock-up device (10) are all two-way clutches, The No. 3 clutch (11) is a one-way clutch or a two-way clutch.

10. The electric vehicle dual-motor coupling drive system according to claim 6, characterized in that, both the main motor (1) and the auxiliary motor (2) can be replaced by other types of power sources, and the other types The power source is selected from a fuel engine, a gas engine and a hydraulic motor.