CN102700407A - Horizontal power-driven device based on two-gear mechanical automatic transmission for pure electric automobile - Google Patents

Horizontal power-driven device based on two-gear mechanical automatic transmission for pure electric automobile Download PDF

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Publication number
CN102700407A
CN102700407A CN2012101850358A CN201210185035A CN102700407A CN 102700407 A CN102700407 A CN 102700407A CN 2012101850358 A CN2012101850358 A CN 2012101850358A CN 201210185035 A CN201210185035 A CN 201210185035A CN 102700407 A CN102700407 A CN 102700407A
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China
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gear
power
input shaft
clutch
diff
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CN2012101850358A
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Chinese (zh)
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高炳钊
梁琼
陈虹
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Jilin University
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Jilin University
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Publication of CN102700407A publication Critical patent/CN102700407A/en
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Abstract

The invention relates to a horizontal power-driven device based on a two-gear mechanical automatic transmission for a pure electric automobile. The device comprises a motor, the two-gear mechanical automatic transmission, a dry clutch, a main reducing gear and a differential, wherein the two-gear mechanical automatic transmission consists of a meshing gear pair formed by gears A, B, E and F, a meshing sleeve T, an input shaft M and an output shaft N; the meshing gear pair comprises a first gear formed by the gears A and B and a second gear formed by the gears E and F; the main reducing gear consists of a gear pair G and H; a clutch driven part of the clutch is in rigid connection with the gear E; and the meshing sleeve T and the clutch are controlled so as to realize gearshift. The horizontal power-driven device has the advantages of effectively utilizing the high-efficient operation region of the motor, being interrupted without power during gearshift, being good in gradeability and being suitable for a horizontal arrangement mode.

Description

The pressure-bearing type Power Drive Unit of the pure electric automobile of 2 grades of automatic speed changer for machine
Technical field
The present invention relates to a kind of Power Drive Unit of the pure electric automobile based on automatic speed changer for machine, belong to a kind of Power Drive Unit of walking machine.
Background technology
How to reduce the energy resource consumption of automobile and the theme that environmental pollution becomes current automobile industry development.Chinese science and technology portion representes; Greatly develop electronlmobil and advance transportation and energy's transition; Become the emphasis that the China and world government of main developed country supports; The development of electronlmobil has caused a global industrial transformation, is related to the future of global automobile industry, more is related to the sustainability of human society future development.The development of nearly 2 years China's pure electric automobiles is rapid, and a plurality of enterprises have released pure electric automobile on market, and pure electric automobile has got into industrialization.Pure electric automobile has the many advantages better than the traditional combustion engine vehicle, and for example zero-emission, high efficiency, irrelevant and peace and quiet move reposefully with oil.
The driver train of pure electric automobile has multiple, for example disposes the conventional drive system of many grades of drivings device and power-transfer clutch, single grade of driving device of no-clutch, two independently electrical motors and the fixing shelves driving device that has axle drive shaft.The conventional drive cording that disposes many grades of drivings device and power-transfer clutch has a plurality of gear accelerating abilitys good, but dynamic interruption during gear shift; Single grade of driving device of no-clutch can be realized stepless change, but accelerating ability, hill climbing ability are poor, and the efficient of electrical motor is not given full play to; Two independently electrical motors and many, the complex structure of fixing shelves driving device number of motors that has axle drive shaft, accelerating ability is poor.
The present invention has an electrical motor and second gear automatic speed changer for machine, and layout not only simple in structure is more convenient, and accelerating ability and hill climbing ability be all than higher, and power-transfer clutch is different with the traditional arrangement form, adopts the dry type clutch driving efficiency higher.Power did not interrupt when operated clutch can realize gear shift, and dynamic property is more outstanding, thereby improved the Combination property of pure electric automobile.
Pressure-bearing type can shorten the length overall of automobile, adds the influence of having cancelled factors such as transmission shaft, and the material of automobile consumption obviously reduces, and curb mass is alleviated; Pressure-bearing type can reduce the headstock cabin, and the space is driven in maximization.The longitudinal space that pressure-bearing type takies is little, and greatly limit has shortened the longitudinal space in headstock cabin, and what bring is spacious driving space, the space that especially front-seat passenger's shank is expanded.This is particularly important for the limited compact car of size.The longitudinal space that pressure-bearing type takies is less, therefore can in the headstock cabin, reserve more crumple energy-absorbing space, and bumping is to guarantee that motor and change-speed box are not easy to invade driving compartment, makes front-seat passenger have higher safety factor.For the normal domestic use car, using pressure-bearing type is only selection.
In general, forerunner's compact car, most intermediate-size car and minority luxury car have all adopted the arrangement of pressure-bearing type.
For passenger vehicle, adopt the back pressure-bearing type can increase vehicle wheelbase, increase the area of effectively standing in the car, vehicle postmedian space availability ratio is higher, and the low floor region area is bigger, improves the ride comfort of vehicle '.
Summary of the invention
Technical matters of the present invention is that a kind of compact conformation will be provided, can gear shift, can guarantee the pressure-bearing type Power Drive Unit of the unbroken a kind of pure electric automobile based on automatic speed changer for machine of power again.
In order to solve above technical matters, the invention provides a kind of pressure-bearing type Power Drive Unit of the pure electric automobile based on automatic speed changer for machine.Device comprises 1, one two grades of automatic speed changer for machine of an electrical motor, a dry type clutch 28, main reduction gear and diff 31.Right and shift sleeve T7 of the engaging gear that two grades of automatic speed changer for machine are made up of gear A 5, B36, E9, F30 and input shaft M38, output shaft N34 form.Engaging gear is formed one grade to A5, B36, and gear mesh E9, F30 form second gear, and gear mesh G35, H32 form main reduction gear.The combination indented joint of the gear A 5 on shift sleeve T7 and the input shaft M38 or separate.Through handling engaging tooth and power-transfer clutch, realize power failure-free gear shift during gear shift.One grade when changing to second gear, power-transfer clutch 28 combines gradually, and the moment of shift sleeve T7 is all taken over, and shift sleeve T7 separates with the combination tooth of gear A 5, and one grade is moved back shelves, and power-transfer clutch 28 combines gradually fully again, so just accomplishes one grade and changes to second gear.When changing to one grade from second gear, power-transfer clutch 28 separates gradually, the rotating speed of the motor 1 that raises simultaneously; When the rotating speed of gear A 5 and shift sleeve T7 is identical, the indented joint that combines of shift sleeve T7 and gear A 5, put in first gear; Power-transfer clutch 28 separates fully again then, accomplishes second gear and changes to one grade.The input shaft M38 two ends of change-speed box are supported in the case of transmission through angular contact ball bearing 3 and 22.Gear A 5, E9 are enclosed within on the input shaft M38 through the needle bearing sky respectively.Gear E9 two ends are supported on respectively in case of transmission and the flywheel through angular contact ball bearing 11,23.Flywheel 16 and flange 20 bolt togethers.Gear B 36 is made of one with output shaft N34, and gear G35, F30 are connected with output shaft N34 through flat key respectively.The two ends of output shaft N34 are supported in the case of transmission through angular contact ball bearing 29,33.Coupling disengage device is formed: rotary release thrust bearing 24 skies of inner ring are enclosed within on the gear E9; Bearing carge 27 connects the outer ring of cutoff clutch 26 and the rotary release thrust bearing 24 of inner ring, and wavy spring 25 is close to the right side of the rotary release thrust bearing of inner ring 24 outer rings and the left side of bearing carge 27.The operating fork 12 that operates the clutch promotes cutoff clutch 26 and moves axially to the right; The outer ring that cutoff clutch 26 promotes the rotary release thrust bearing 24 of inner ring; The outer ring promotes ball, promotes diaphragm spring 15 thereby ball promotes the inner ring of the rotary release thrust bearing 24 of inner ring, realizes the closure of power-transfer clutch 28.The clutch plate 17 of power-transfer clutch 28 is rigidly connected with gear E9 through clutch plate hub 19, and flywheel 16 is rigidly connected through the input shaft M38 of spline on the flange 20 and change-speed box, and purpose is exactly operated clutch 28 realization power failure-free drivings when gear shift.
Advantage of the present invention is effectively to utilize the high-efficient operation district of electrical motor; Power failure-free during gear shift; Hill climbing ability is good; Simple in structure, adopt the dry type clutch driving efficiency high; Be fit to horizontal arrangement form.Main reduction gear, diff and change-speed box are contained in the housing, the dynamic assembly compact conformation; Do not need between change-speed box and main reduction gear, transmission shaft to be set, power transmission is apart from weak point, and the direction of transmission of power does not change, and has controlled the degradation of energy in the power transmission process effectively, improved the efficient of transmission of power, so driving efficiency is very high.Can solve simultaneously car and drive the problem of insufficient space, shorten the longitudinal space in headstock cabin etc.
Automatic speed changer for machine is arranged to two gears, and purpose is exactly to improve the acceleration capability and the hill climbing ability of automobile, makes electrical motor all the time in the running of efficient district.Two-speed transmission is simple in structure, compact.
Opening on the case of transmission is for the Vidacare corp of gear-shifting actuating mechanism is installed.
Power-transfer clutch arrangement form of the present invention is different with traditional power-transfer clutch, and power-transfer clutch 28 links to each other with output shaft N34 through a pair of gear cluster (gear E9, gear F30).The drive part of power-transfer clutch is connected by spline with the input shaft M38 of change-speed box, and secondary part is connected with gear E9 through splined hub.Power failure-free drives in the time of can realizing gear shift.
Insert one grade during starting, electrical motor 1 drives starting, and power-transfer clutch 28 combines gradually when acceleration shifting; The moment of shift sleeve T7 is all taken over, and shift sleeve T7 separates with the combination tooth of gear A 5, and one grade is moved back shelves; Power-transfer clutch 28 combines gradually fully again, so just accomplishes one grade and changes to second gear.When changing to one grade from second gear, power-transfer clutch 28 separates gradually, the rotating speed of the motor 1 that raises simultaneously, and when the rotating speed of gear A 5 and shift sleeve T7 is identical, the indented joint that combines of shift sleeve T7 and gear A 5, put in first gear, power-transfer clutch 28 separates gradually fully again then.Accomplishing second gear changes to one grade.The power failure-free that so just can realize automobile drives.Improve the accelerating ability and the dynamic property of automobile.
In addition, electrical motor 1 can forward and reversely rotate, and during reversing, put in the first speed electrical motor 1 backward rotation realizes reverse travel.
Glancing impact carries out braking energy and reclaims, and promptly mouth is former input end, i.e. electrical motor; Input end is former mouth, i.e. the rotating speed of wheel, and electrical motor becomes generating state by driving condition, and energy is from the wheel to the motor.The realization braking energy reclaims.
Description of drawings
Fig. 1 is a schematic diagram of the present invention;
Fig. 2 is integral structure figure of the present invention;
Fig. 3 is the power-transfer clutch partial enlarged drawing;
Fig. 4 is the power transmission line of one grade of driving;
The power transmission line that Fig. 5 drives for second gear;
Fig. 6 is the power transmission line of one grade of braking;
Fig. 7 is the power transmission line of second gear braking;
Fig. 8 is one grade of power transmission line conversion process that changes to second gear;
Fig. 9 changes the power transmission line conversion process to a grade for second gear;
The structure principle chart of Figure 10 scheme two;
Figure 11. 21 grades of drivings of scheme;
Figure 12. scheme two second gears drive;
Figure 13. 21 grades of brakings of scheme;
Figure 14. the braking of scheme two second gears;
Figure 15. scheme two is by one grade of power transmission line conversion process that changes to second gear;
Figure 16. scheme two is changed the power transmission line conversion process to a grade by second gear.
Among the figure: wherein: 38-input shaft M, 5-gear A, 7-shift sleeve T, 9-gear E, 28-power-transfer clutch, 34-transmission output shaft N, 36-gear B, 35-gear G, 32-gear H, 30-gear F, 31-diff.
Among the figure: 1-motor, 2-rubber oil sea, 3, the 22-angular contact ball bearing, 4-mission case, 5-gear A, 6-needle bearing; 7-shift sleeve T, 8-sleeve, 9-gear E, 10, the 23-angular contact ball bearing, 11-rubber oil sea, 12-clutch throw-out fork; The 13-clutch-bell cover, 14-diaphragm spring, 15-platen, 16-flywheel, 17-clutch plate, 18-damping spring; The 19-clutch plate hub, 20-flange, 21-sleeve, the rotary release thrust bearing of 24-inner ring, 25-wavy spring, 26-cutoff clutch; The 27-bearing carge, 28-power-transfer clutch, 29, the 33-angular contact ball bearing, 30-gear F, 31-diff, 32-gear H; 34-transmission output shaft N, 35-gear G, 36-gear B, 37-bearing cap shim, 38-input shaft M
The specific embodiment
Consult accompanying drawing, the present invention is further described.
Consult Fig. 1, the invention provides a kind of Power Drive Unit of the pure electric automobile based on automatic speed changer for machine.Device comprises 1, one two grades of automatic speed changer for machine of an electrical motor, a dry type clutch 28, main reduction gear and diff 31.Right and shift sleeve T7 of the engaging gear that two grades of automatic speed changer for machine are made up of gear A 5, B36, E9, F30, G35, H32 and input shaft M38, output shaft N34 form.Engaging gear is formed one grade to A5, B36, and gear mesh E9, F30 form second gear, and gear mesh G35, H32 form main reduction gear.Handle shift sleeve T7 and power-transfer clutch 28 and realize the conversion of gear.The combination indented joint or the separation of the gear A 5 of shift sleeve T7 on input shaft M38.The input shaft M38 two ends of change-speed box are supported in the case of transmission through angular contact ball bearing 3 and 22.Gear A 5, E9 are enclosed within on the input shaft M38 through the needle bearing sky respectively.Gear E9 two ends are supported on respectively in case of transmission and the flywheel through angular contact ball bearing 11,23.Flywheel 16 and flange 20 bolt togethers.Gear B 36 is made of one with output shaft N34, and gear G35, F30 are connected with output shaft N34 through flat key respectively.The two ends of output shaft N34 are supported in the case of transmission through angular contact ball bearing 29,33.Coupling disengage device is formed: rotary release thrust bearing 24 skies of inner ring are enclosed within on the gear E9; Bearing carge 27 connects the outer ring of cutoff clutch 26 and the rotary release thrust bearing 24 of inner ring, and wavy spring 25 is close to the right side of the rotary release thrust bearing of inner ring 24 outer rings and the left side of bearing carge 27.The operating fork 12 that operates the clutch promotes cutoff clutch 26 and moves axially to the right, the outer ring that cutoff clutch 26 promotes release thrust bearing 24, and the outer ring promotes ball, promotes diaphragm spring 15 thereby ball promotes the inner ring of release thrust bearing 26, realizes the closure of power-transfer clutch 28.The clutch plate 17 of power-transfer clutch 28 is connected with gear E9 through clutch plate hub 19, and flywheel 16 is connected with the input shaft M38 of change-speed box through the spline on the flange 20, and purpose is exactly operated clutch 28 realization power failure-free drivings when gear shift.
Automatic speed changer for machine is arranged to two gears, and purpose is exactly to improve the acceleration capability and the hill climbing ability of automobile, makes electrical motor all the time in the running of efficient district.Two-speed transmission is simple in structure, compact.
The present invention can realize following mode of operation through two-speed transmission.
One grade of driving: consult Fig. 4, one grade when driving, a shift sleeve T7 left side combines, and power transmission line is consulted among the figure shown in the heavy line: through gear A 5, gear B 36, gear G35, gear H32, diff 31, exported by semiaxis.Electrical motor 1 can forward and reversely rotate, and realizes reverse travel during backward rotation.
Second gear drives: consult Fig. 5, when second gear drove, shift sleeve T7 is right to be combined, and power transmission line is shown in heavy line among the figure: through gear E9, gear F30, gear G35, gear H32, diff 31, exported by semiaxis.
The glancing impact automobile is operated in braking mode, and wheel drive motor generating charges the battery, and divides two kinds of situation:
One grade of braking: when one grade of driving of automobile is gone; Stepping on brake pedal brakes; Power transmission line is shown in heavy line among Fig. 4: through semiaxis, diff 31, gear H32, gear G35, gear B 36, gear A 5, electrical motor 1, and the drive motor generating.When battery electric quantity is full of, change mechanical braking into.
The second gear braking: the automobile second gear drives when going, and steps on brake pedal and brakes, and power transmission line is shown in heavy line among Fig. 5: through semiaxis, diff 31, gear H32, gear G35, gear F30, gear E9, electrical motor 1, and the drive motor generating.When battery electric quantity is full of, change mechanical braking into.
Gearshift procedure: when changing to second gear, need 28 combinations of completion power-transfer clutch, shift sleeve T7 to withdraw from a left side and combine by one grade.When changing to one grade, need to accomplish actions such as power-transfer clutch 28 separation, electrical motor 1 speed governing, shift sleeve T7 left side combination by second gear.Concrete action: one grade when changing to second gear such as Fig. 8, power-transfer clutch 28 combines gradually, and the moment of shift sleeve T7 is all taken over, and shift sleeve T7 separates with the combination tooth of gear A 5, and one grade is moved back shelves, and power-transfer clutch 28 is combination fully gradually again, so just accomplishes one grade and changes to second gear.When changing to one grade from second gear such as Fig. 9, power-transfer clutch 28 separates gradually, the rotating speed of the motor 1 that raises simultaneously, and when the rotating speed of gear A 5 and shift sleeve T7 is identical, the indented joint that combines of shift sleeve T7 and gear A 5, put in first gear, power-transfer clutch 28 separates fully again then.Accomplishing second gear changes to one grade.The power failure-free that so just can realize automobile drives.Improve the accelerating ability and the dynamic property of automobile.
The effect of clutch operating is to realize that in gearshift procedure power failure-free drives, and improves the dynamic property of automobile.
Can find out that from top explanation good effect of the present invention is to make full use of the high-efficient operation district of electrical motor, reduce power waste, can realize power failure-free gear shift; Main reduction gear, diff and change-speed box are contained in the housing, the dynamic assembly compact conformation; Do not need between change-speed box and main reduction gear, transmission shaft to be set, shortened the transmission distance, direction is consistent, and driving efficiency is high; Shorten the length overall of automobile, reduced complete vehicle curb weight; Reduce the cabin, the space is driven in maximization.
This scenario-frame is simple, easy to operate.But when automobile went with second gear, power-transfer clutch was closed all the time, just needed steering unit pushing away always, and each parts of power-transfer clutch are in the stress rupture that this state can add speed clutch always, reduced service life.In order to address this problem; Second kind of scheme proposed now; Structure principle chart is shown in figure 10, shift sleeve and and power-transfer clutch bonded assembly gear mesh E, F between add one-level gear mesh C8, D29, added gear mesh is as second speed gear; With power-transfer clutch bonded assembly gear mesh E, F then as in the gearshift procedure, change-speed box is the assurance of outputting power all the time.
The specific embodiment of gearshift procedure: when changing to second gear from one grade, power-transfer clutch 28 combines gradually, and the moment of shift sleeve T7 is all taken over; Shift sleeve T7 separates with the combination tooth of gear A 5, and one grade is moved back shelves, and power-transfer clutch 28 combines gradually again; When the rotating speed of gear C 8 and shift sleeve T7 was identical, shift sleeve T7 combined throw in second gear with the tooth that combines of gear C 8; Power-transfer clutch 28 separates again then, accomplishes one grade and changes to second gear.When changing to one grade from second gear, power-transfer clutch 28 engages gradually, and the moment of shift sleeve T7 is all taken over; Shift sleeve T7 separates with the combination tooth of gear C 8, and second gear moves back shelves, the rotating speed of the motor 1 that raises simultaneously; When the rotating speed of gear A 6 and shift sleeve T7 is identical, the indented joint that combines of shift sleeve T7 and gear A 5, put in first gear; Power-transfer clutch 28 separates again then, accomplishes second gear and changes to one grade.
In gearshift procedure, all the time can outputting power in order to make change-speed box, must guarantee, be less than the second gear transmitting ratio of change-speed box with the transmitting ratio of power-transfer clutch bonded assembly gear mesh.Rotating speed of motor is n e, the rotating speed of one grade of driving gear A is n A, the rotating speed of first speed driven gear B is n B, the rotating speed of second gear driving gear C is n C, the rotating speed of second gear driven gear D is n D, be respectively n with the rotating speed of clutch bonded assembly gear mesh E, F E, n FOne grade of transmitting ratio is i 1, the second gear transmitting ratio is i 2, with the transmitting ratio of power-transfer clutch bonded assembly gear mesh E, F be i 3, i 1>i 2>i 3When going with one grade, n A=n e, n B=n A/ i 1, n F=n B, n E=n F* i 3=n A* i 3/ i 1=n e* i 3/ i 1, because i 3<i 1, therefore, n E<n eWhen going with second gear, n C=n e, n D=n C/ i 2, n F=n D, n E=n F* i 3=n C* i 3/ i 2=n e* i 3/ i 2, because i 2>i 3, n E<n eThe rotating speed of power-transfer clutch A end equals motor speed, and the rotating speed of secondary part equals the rotating speed of gear E, therefore; During the gearshift procedure engaging clutch; The rotating speed of the A end of power-transfer clutch is all the time greater than secondary part, and electrical motor can drive automobile by outputting power, power failure-free when realizing gear shift all the time.
The mode of operation of scheme two:
One grade of driving is shown in figure 11, and second gear drives shown in figure 12, and one grade of braking is shown in figure 13, and the second gear braking is shown in figure 14.
Gearshift procedure: when changing to second gear (consulting shown in Figure 15) from one grade,, power-transfer clutch 28 combines gradually; The moment of shift sleeve T7 is all taken over, and shift sleeve T7 separates with the combination tooth of gear A 5, and one grade is moved back shelves; Power-transfer clutch 28 combines gradually again, and when the rotating speed of gear C 8 and shift sleeve T7 was identical, shift sleeve T7 combined with gear C 8; Throw in second gear, power-transfer clutch 28 separates again then, accomplishes one grade and changes to second gear.When changing to one grade from second gear (shown in figure 16), power-transfer clutch 28 engages gradually, and the moment of shift sleeve T7 is all taken over; Shift sleeve T7 separates with the combination tooth of gear C 8, and second gear moves back shelves, the rotating speed of the motor 1 that raises simultaneously; When the rotating speed of gear A 6 and shift sleeve T7 is identical; The indented joint that combines of shift sleeve T7 and gear A 5, put in first gear, power-transfer clutch 28 separates again then.Accomplishing second gear changes to one grade.
Scheme two had both solved the problem that release thrust bearing promotes power-transfer clutch all the time, guaranteed again in the gearshift procedure that electrical motor all the time can outputting power, power failure-free when having realized gear shift.

Claims (2)

1. the pressure-bearing type Power Drive Unit of the pure electric automobile of 2 grades of automatic speed changer for machine; Comprise an electrical motor (1), two grades of automatic speed changer for machine, a dry type clutch; Main reduction gear and diff; It is characterized in that: said two grades of automatic speed changer for machine comprise: sky be enclosed within gear A (5) and gear E (9) on the input shaft M (38), through spline be connected shift sleeve T (7) on the input shaft M (38), the gear B (36) that is made of one with transmission output shaft N (34), with transmission output shaft N (34) through key bonded assembly gear F (30); Gear A (5) is formed one grade of gear mesh with gear B (36); Gear E (9) is right with gear F (30) composition second speed gear; Said input shaft M (38) one ends are driven by electrical motor (1), and said power-transfer clutch (28) is contained in the other end of input shaft M (38) through gear E (9);
Said two grades of automatic speed changer for machine also comprise diff (31), by being contained in the gear G (35) on the transmission output shaft N (34) and being contained in the main reduction gear that the gear H (32) on the diff (31) forms; Gear A (5) on shift sleeve T (7) and the input shaft M (38) combines indented joint or separates; During gear shift; Realize power failure-free gear shift through handling shift sleeve T (7) and power-transfer clutch (28), through diff (31) outputting power.
2. the pressure-bearing type Power Drive Unit of the pure electric automobile of 2 grades of automatic speed changer for machine; Comprise an electrical motor (1), two grades of automatic speed changer for machine, a dry type clutch; Main reduction gear and diff; It is characterized in that: said two grades of automatic speed changer for machine comprise: sky be enclosed within gear A (5) and gear E (9) on the input shaft M (38), through spline be connected shift sleeve T (7) on the input shaft M (38), the gear B (36) that is made of one with transmission output shaft N (34), with transmission output shaft N (34) through key bonded assembly gear F (30); Gear A (5) is formed one grade of gear mesh with gear B (36); Said input shaft M (42) one ends are driven by electrical motor (1), and said power-transfer clutch (28) is contained in the other end of input shaft M (42) through gear E (9);
Said two grades of automatic speed changer for machine also comprise diff (31), by be contained in the gear G (35) on the transmission output shaft N (34) and be contained in main reduction gear that the gear H (32) on the diff (31) forms, to form second speed gear right by being contained in the gear E (9) on the input shaft M (38) and being contained in gear F (30) on the transmission output shaft N (34); Shift sleeve T (7) switches between gear A (5) on the input shaft M (38) and gear C (8); During gear shift; Realize power failure-free gear shift through handling shift sleeve T (7) and power-transfer clutch (28), through diff (31) outputting power.
CN2012101850358A 2012-06-06 2012-06-06 Horizontal power-driven device based on two-gear mechanical automatic transmission for pure electric automobile Pending CN102700407A (en)

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CN105299219A (en) * 2015-10-29 2016-02-03 吉林大学 Electric vehicle double-gear gearbox with normally engaged clutch
CN105299192A (en) * 2015-10-29 2016-02-03 吉林大学 Electric vehicle double-gear gearbox with dry clutches
CN105299153A (en) * 2015-10-29 2016-02-03 吉林大学 Electric vehicle double-gear gearbox
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CN106321744A (en) * 2016-11-04 2017-01-11 吉林大学 Dual-motor two-gear speed changing box for electric vehicle and gear-shifting control method thereof
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Application publication date: 20121003