CN105526318A - Electric drive system based on two-gear transmission device - Google Patents

Electric drive system based on two-gear transmission device Download PDF

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Publication number
CN105526318A
CN105526318A CN201610045539.8A CN201610045539A CN105526318A CN 105526318 A CN105526318 A CN 105526318A CN 201610045539 A CN201610045539 A CN 201610045539A CN 105526318 A CN105526318 A CN 105526318A
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China
Prior art keywords
clutch
oil
assembly
gear
drive system
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Granted
Application number
CN201610045539.8A
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Chinese (zh)
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CN105526318B (en
Inventor
雷雨龙
陈魏
扈建龙
刘宗晟
刘正伟
侯利国
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Jilin University
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Jilin University
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H3/00Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/44Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
    • F16H3/70Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00Arrangement or mounting of transmissions in vehicles
    • B60K17/04Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/06Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing
    • B60K17/08Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing of mechanical type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H57/00General details of gearing
    • F16H57/02Gearboxes; Mounting gearing therein
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H57/00General details of gearing
    • F16H57/08General details of gearing of gearings with members having orbital motion
    • F16H57/10Braking arrangements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H61/00Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/0021Generation or control of line pressure
    • F16H61/0025Supply of control fluid; Pumps therefore
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H61/00Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/26Generation or transmission of movements for final actuating mechanisms
    • F16H61/28Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
    • F16H61/30Hydraulic or pneumatic motors or related fluid control means therefor

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Structure Of Transmissions (AREA)

Abstract

The invention discloses an electric drive system based on a two-gear transmission device. The electric drive system comprises a driving mechanism, a planetary gear train, a brake assembly, a clutch, a one-way overrunning clutch and an output shaft; the driving mechanism comprises a driving shaft; the planetary gear train comprises a sun wheel, a planet carrier and an inner gear ring, wherein the sun wheel is fixedly connected to the driving shaft; the brake assembly is fixedly arranged and is selectively connected to the inner gear ring; the clutch is fixedly connected to the driving shaft; the one-way overrunning clutch comprises an inner ring and an outer ring, wherein the inner ring and the outer ring are coaxially arranged, the outer ring can drive the inner ring to rotate forwards in a one-way mode and is fixedly connected to the planet carrier, and the inner ring is selectively connected to the clutch; the output shaft is fixedly connected to the inner ring and outputs power. The electric drive system effectively solves the problem of power interruption in the gear shifting process of mechanical transmission devices for electric cars, realizes recovery of the braking energy of a whole car, is more compact in structure and convenient to install, lowers the performance requirement for motors, improves the operating efficiency of the motors and increases the driving range of the electric cars.

Description

A kind of electric drive system based on two shift transmissions
Technical field
The present invention relates to Automobile drive technical field, particularly a kind of electric drive system based on two shift transmissions.
Background technique
Electric vehicle is novel, energy-saving and environmental protection vehicle, especially under the overall situation that current atmospheric pollution is serious, has huge development potentiality and wide application prospect.Electric vehicle uses motor to instead of the motor of orthodox car, and motor can be with to carry and start, and meets automobile usage requirement by rational configuration, and this is the very large difference with motor.Electric motor car use multispeed manual transmission improper, if but cancel variable speed drive, then be difficult to take into account automobile climbing and run at high speed and wait requirement, particularly small and medium-sized car, be necessary the power system of the performance characteristic redesign electric vehicle for motor.
Current electric driving system for electric automobile is more and more subject to the favor of people, and through finding the retrieval of prior art, the setting type of the existing employing parallel-axis type of electric vehicle two shift transmission, has again the setting type adopting planet row type.For two shift transmissions adopting parallel-axis type setting type, how realized the switching of gear by synchronizer or clutch; For two shift transmissions adopting planet row type setting type, be mostly by clutch or the incompatible switching realizing gear of brake groups.
Compared with traditional drive system, electric driving system for electric automobile has very large advantage, is especially embodied in environmental protection aspect, but existing technology also exists some shortcomings.If two shift transmissions used for electric vehicle adopt synchronizer etc. to realize the switching of gear, it needs to install separately gear shifting actuating mechanism, and its volume is increased, and is not easy to the layout of car load, and there is power interruption in shift process; If two shift transmissions used for electric vehicle adopt clutch, break etc. to realize the switching of gear, in order to reduce the time of power interruption, it is higher to the requirement of shifting control system, not easily realizes.
Summary of the invention
The present invention has designed and developed a kind of electric drive system based on two shift transmissions, and object overcomes that existing speed changer volume is excessive, the defect of the layout that is not easy to car load, makes speed changer structure compacter, and improve transmission efficiency.
Technological scheme provided by the invention is:
Based on an electric drive system for two shift transmissions, comprising:
Driving mechanism, it comprises live axle;
Epicyclic train, it comprises sun gear, planet carrier and ring gear; Described sun gear is fixedly connected with described live axle; And
Brake assembly, it is fixedly installed in case of transmission, and optionally connects described ring gear, thus realizes the static of ring gear or rotate;
Mono-directional overrun clutch, it comprises inner ring and the outer shroud of coaxial setting, and described outer shroud can rotate by the described outer shroud of unidirectional drive facing one direction; Described outer shroud is fixedly connected with described planet carrier;
Clutch, it optionally connects described sun gear and described inner ring;
Output shaft, it is rotatable is supported on described case of transmission, for outputing power;
Wherein, when being in a gear, ring gear is fixed by described brake assembly, and described clutch makes sun gear be separated with inner ring; When being in two gears, ring gear is fixed by described brake assembly, and described clutch makes sun gear and interior engagement of loops; When be in reverse gear time, described brake assembly makes ring gear freely, and described clutch makes sun gear and interior engagement of loops.
Preferably, also comprise casing assembly, described casing assembly comprises main casing, output terminal sub-shell, end sub-shell, forms the first receiving cavity between described main casing and end sub-shell; The second receiving cavity is formed between described main casing and output terminal sub-shell; Between described first receiving cavity and the second receiving cavity, chamber wall arranges the through hole being used for live axle described in rotary support.
Preferably, described driving mechanism is motor.
Preferably, described brake assembly comprises:
Brake hub, it is fixedly connected with described main casing;
Brake plunger, it is communicated with described break oil input channel;
Brake disc, it is fixedly connected with described ring gear;
Wherein, when described break oil input channel is oil-filled, described brake plunger can be promoted and move described brake disc and brake hub joint.
Preferably, described clutch comprises:
Clutch hub, it is fixedly connected with sun gear;
Clutch plunger, it is communicated with clutch oil input channel;
Clutch disk, it is fixedly connected with described inner ring;
Wherein, when clutch oil input channel is oil-filled, oil promotes clutch plunger makes clutch disk and clutch plate compress, clutch hub and clutch disk to be engaged.
Preferably, also comprise hydraulic system assembly, it can be that described break oil input channel and clutch oil input channel are oil-filled, to change the working state of brake assembly and clutch.
Preferably, described hydraulic system assembly comprises:
Oil pump, hydraulic oil can pressurize by it;
Clutch solenoid valve, it is connected with described clutch oil input channel, optionally makes the oil in oil pump enter into described clutch oil input channel;
Break solenoid valve, it is connected with described break oil input channel, optionally makes the oil in oil pump enter into described break oil input channel.
Preferably, described clutch solenoid valve is normal-closed electromagnetic valve, and break solenoid valve is normal-open electromagnetic valve.
The invention has the beneficial effects as follows:
Electric drive system based on two shift transmissions provided by the invention relates to permagnetic synchronous motor, planet row, clutch, the technology that break and mono-directional overrun clutch combine, interrupt and Brake energy recovery problem mainly for mechanical transmission power gear shifting used for electric vehicle, pass through Proper Match, design a kind of electric drive system based on two shift transmissions, effective solution mechanical transmission shifting power used for electric vehicle interrupts and car load Brake energy recovery problem, make the structure of drive system compacter simultaneously, be convenient to install, also reduce the performance requirement to motor, improve motor operational efficiency, add the continual mileage of electric motor car.
Accompanying drawing explanation
Fig. 1 is the electric drive system general structure schematic diagram based on two shift transmissions of the present invention.
Fig. 2 is brake assembly plan view of the present invention.
Fig. 3 is that brake assembly A-A of the present invention is to sectional view.
Fig. 4 is planet row assembly plan view of the present invention.
Fig. 5 is that planet row assembly B-B of the present invention is to sectional view.
Fig. 6 is clutch assembly plan view of the present invention.
Fig. 7 is that clutch assembly C-C of the present invention is to sectional view.
Fig. 8 is mono-directional overrun clutch assembly structure schematic diagram of the present invention.
Fig. 9 is mono-directional overrun clutch partial schematic diagram of the present invention.
Figure 10 is hydraulic system assembly structural representation of the present invention.
Figure 11 is hydraulic system assembly hydraulic schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail, can implement according to this with reference to specification word to make those skilled in the art.
As shown in Figure 1, the invention provides a kind of electric drive system based on two shift transmissions, comprise housing assembly, driving mechanism assembly, brake assembly 1300, planet row assembly 1400, clutch assembly 1500, mono-directional overrun clutch assembly 1600 and hydraulic system assembly 1700.
Described housing assembly comprises main casing 1101, output terminal sub-shell 1102, end sub-shell 1103 and end bearing (ball) cover 1105 and output shaft bearing end cap 1104, wherein said output terminal sub-shell 1102 is arranged at main casing 1101 right-hand member, and is fixedly connected with main casing 1101 by bolt 1107.End sub-shell 1103 is arranged at the left end of main casing 1101, and is fixedly connected with main casing 1101 by screw 1109.End bearing (ball) cover 1105 is fixedly connected with end sub-shell 1103 by screw 1108.Output shaft bearing end cap 1104 is fixedly connected with output terminal sub-shell 1102 by screw 1106.
Output shaft 1800 is connected with output terminal sub-shell 1102 by output shaft ball bearing 1801, is provided with felt collar oil sealing 1802 at output shaft 1800 between output terminal sub-shell 1102.
Form a cavity between described main casing 1101 and end sub-shell 1103, described driving mechanism assembly is arranged in this cavity.Described driving mechanism assembly comprises stator 1201, stator coil 1203, rotor 1202, Permanent Magnet Steel 1204 and motor shaft 1205.Stator 1201 is connected with main casing 1101 interference fit, and Permanent Magnet Steel 1204 is connected with rotor 1202 by screw 1208, and rotor 1202 is connected with motor shaft 1205 interference fit, and by spring washer 1206 and nut 1207 axial restraint.Motor shaft 1205 is connected with end sub-shell 1103 by motor shaft ball bearing 1209, and the output terminal of motor shaft 1205 is fixedly connected with jack shaft 1409 by spline 1206.
As shown in Figure 2 and Figure 3, described brake assembly 1300 comprises break oil input channel 1301, break large O RunddichtringO 1302, brake hub 1303, break platen block 1304, return disc spring 1305, brake plunger 1306, the little O RunddichtringO 1307 of break, brake disc 1308, brake strip 1309, braking steel disc 1310, braking steel disc jump ring 1311.Wherein the large O RunddichtringO 1302 of break is arranged in the outer ring seal groove of brake plunger 1306, the little O RunddichtringO 1307 of break is arranged in the inner ring seal groove of brake plunger 1306, and brake plunger 1306 is arranged in the chamber of brake hub 1303.The outer ring of brake assembly 1300 and main casing 1101 interference fit, and fixed by screw 1110 and main casing 1101, object increases join strength.When brake assembly 1300 works, break oil input channel 1301 is oil-filled, and pressure oil promotes brake plunger 1306 makes brake disc 1308 and brake strip 1309 compress, and plays braking action.
As shown in Figure 4, Figure 5, described planet row assembly 1400 comprises ring gear 1401, planet wheel 1402, planet carrier 1403, planet wheel back-up ring 1404, planetary pinion shaft retaining ring 1405, planet pin jump ring 1406, sun gear 1407, planet wheel shaft 608.Wherein sun gear 1407 is connected with jack shaft 1409 by flat key 1410, and ring gear 1401 empty set is on jack shaft 1409.
As shown in Figure 6, Figure 7, described clutch assembly 1500 comprises clutch hub 1501, the large O RunddichtringO 1502 of clutch, clutch oil input channel 1503, the little O RunddichtringO 1504 of clutch, clutch retraction springs 1505, return spring jump ring 1506, clutch oil input channel O RunddichtringO 1507, clutch disk 1508, clutch plate 1509, clutch steel disc 1510, clutch steel disc jump ring 1511, clutch plunger 1512.Wherein the large O RunddichtringO 1502 of clutch is arranged in the outer ring seal groove of clutch plunger 1512, and the little O RunddichtringO 1504 of clutch is arranged in the inner ring seal groove of clutch plunger 1512, and clutch plunger 1512 is arranged in the chamber of clutch hub 1501.Wherein clutch hub 1501 is connected with jack shaft 1409 by flat key 1513.During work, clutch oil input channel 1503 is oil-filled, and pressure oil promotes clutch plunger 1512 makes clutch disk 1508 and clutch plate 1509 compress, and plays combination.
As shown in Figure 8, shown in Fig. 9, described mono-directional overrun clutch assembly 1600 comprises outer shroud 1601, fixing baffle ring 1602, baffle ring 1603, inner ring 1604, voussoir 1605, back-up ring 1606, back-up ring jump ring 1607, land 1608.Its outer-loop 1601 is fixedly connected with land 1608, and inner ring 1604 is connected with output shaft 1800 by flat key 1609.When rotating speed higher than inner ring 1604 of the rotating speed of outer shroud 1601, the 1600 one-tenth work of mono-directional overrun clutch assembly, power is passed to inner ring 1604 by outer shroud 1601; When the rotating speed of outer shroud 1601 is lower than inner ring 1604 rotating speed, inner ring 1604 is separated automatically with outer shroud 1601, and mono-directional overrun clutch assembly 1600 does not work.
The splined hole of the brake disc 508 of brake assembly 1300 coordinates with the splined shaft of the ring gear 1401 of planet row assembly 1400, the planet carrier 1403 of planet row assembly 1400 is connected by bolt 1610 with the land 908 of mono-directional overrun clutch assembly 1600, and the splined hole of the clutch disk 1508 of clutch assembly 1500 coordinates with the splined shaft of the inner ring 1604 of mono-directional overrun clutch 1600.
As shown in Figure 10, Figure 11, described hydraulic system assembly 1700 comprises hydraulic pressure assembly oil inlet pipe 1701, coarse filtration 1702, valve plate 1703, Oil pump electrical machinery 1704, oil pump 1705, clutch pressure sensor 1706, brake pressure sensor 1707, clutch solenoid valve 1708, break solenoid valve 1709, TCU wire harness 1710, TCU1711, relief valve 1712, main oil pressure pressure transducer 1713, essence filter 1714, accumulator 1715.Clutch solenoid valve 1708 is clutch assembly 1500 fuel feeding, and break solenoid valve 1709 is brake assembly 1300 fuel feeding.
Wherein, clutch solenoid valve 1708 is normal-closed electromagnetic valve, and break solenoid valve 1709 is normal-open electromagnetic valve.Power to break solenoid valve 1709, break oil input channel 1301 is oil-filled, and brake assembly 1300 works, and vehicle travels with forward gear, power when not giving clutch solenoid valve 1708, clutch oil input channel 1503 emptying, clutch assembly 1500 does not work, and car load travels with a gear, power when giving clutch solenoid valve 1708, clutch oil input channel 1503 is oil-filled, and clutch assembly 1500 works, and power system can be made to switch to two gears by a gear; All power to clutch solenoid valve 1708 and break solenoid valve 1709, break oil input channel 1301 emptying, clutch oil input channel 1503 is oil-filled, motor reversal, can realize reversing gear.
Working procedure of the present invention is as follows:
When a gear runs, brake assembly 1300 works, then ring gear 1401 maintains static relative to main casing 1101.Clutch assembly 1500 does not work, the sun gear 1407 of planet row assembly 1400 and the inner ring 1604 of mono-directional overrun clutch assembly 1600 disconnect, now the rotating speed of motor passes to the outer shroud 1601 of mono-directional overrun clutch assembly 1600 by the planet carrier 1403 of planet row assembly 1400, the rotating speed of outer shroud 1601 is higher than the rotating speed of inner ring 1604, mono-directional overrun clutch assembly 1600 works, the outer shroud 1601 of mono-directional overrun clutch assembly 1600 drives inner ring 1604 to rotate, rotation is passed to output shaft 1800 by flat key 10II by inner ring 1604 again, outputs power.
When two gears run, brake assembly 1300 works, then ring gear 1401 maintains static.Clutch assembly 1500 works, the sun gear 1407 of planet row assembly 1400 and the inner ring 1604 of mono-directional overrun clutch assembly 1600 combine, because sun gear 1407 rotating speed of planet row is higher than the rotating speed of planet carrier 1403, now, inner ring 1604 rotating speed of mono-directional overrun clutch assembly 1600 is higher than the rotating speed of outer shroud 906, inner ring 1604 and outer shroud 906 depart from, mono-directional overrun clutch assembly 1600 does not work, the rotating speed of motor is directly delivered to output shaft 1800 by the sun gear 1407 of planet row assembly 1400 and the inner ring 1604 of mono-directional overrun clutch assembly 1600, output power.
The process of two gears is switched to by a gear, only need the clutch solenoid valve 1708 of hydraulic control system synthesis 1700, oil-filled to the clutch oil input channel 1503 of clutch assembly 1500, clutch assembly 1500 is started working, the rotating speed of motor is delivered to mono-directional overrun clutch assembly 1600 by during a gear by the planet carrier 1403 of planet row assembly 1400, arrive output shaft 1800 again and change sun gear 1407 by planet row assembly 1400 into, be delivered to the inner ring 1604 of mono-directional overrun clutch assembly 1600, then to output shaft 1800.In the process of upshift, only need solenoidoperated cluthes assembly 1500, control program is simple, can realize gearshift, due to upshift process, the outer shroud 1601 of mono-directional overrun clutch assembly 1600 is also in rotation, namely two gears are raising speeds on the basis of a gear, so upshift process ensure that power failure-free.
The process of a gear is switched to by two gears, only need the clutch solenoid valve 1708 of hydraulic control system synthesis 1700, to clutch oil input channel 1503 emptying of clutch assembly 1500, clutch assembly 1500 is not worked, the sun gear 1407 of planet row assembly 1400 and the inner ring 1604 of mono-directional overrun clutch assembly 1600 separated, output shaft 1800 starts reduction of speed under the effect of car load running resistance, when inner ring 1604 rotating speed of mono-directional overrun clutch assembly 1600 drops to equal with the rotating speed of outer shroud 1601, mono-directional overrun clutch assembly 1600 is started working automatically, power is passed to the outer shroud 906 of mono-directional overrun clutch assembly 1600 by the planet carrier 1403 of planet row assembly 1400, mono-directional overrun clutch assembly 1600 works, outer shroud 1601 drives inner ring 1604, output shaft 1800 is passed to again by the inner ring 1604 of mono-directional overrun clutch assembly 1600, realize Power output.
When reversing gear, brake assembly 1300 does not work, ring gear 1401 is rotatable, clutch assembly 1500 works, motor reversal, the rotating speed of motor is passed to the inner ring 1604 of mono-directional overrun clutch assembly 1600 by the sun gear 1407 of planet row assembly 1400, then is passed to output shaft 1800, output power, realize reversing gear.
When car load travels with forward gear, brake assembly 1300 works.When car load needs braking with a gear operation, clutch assembly 1500 can be made to work, and output shaft 1800 is connected with the sun gear 1407 of planet row assembly 1400, and sun gear 1407 dragging motor axle 1205 rotates, magneto is converted to generator mode by electric motor mode, realizes Brake energy recovery; When car load needs braking with two gear operations, output shaft 1800 is connected with the sun gear 1407 of planet row assembly 1400, and sun gear 1407 dragging motor axle 1205 rotates, and magneto is converted to generator mode by electric motor mode, realizes Brake energy recovery.
Although embodiment of the present invention are open as above, but it is not restricted to listed in specification and mode of execution utilization, it can be applied to various applicable the field of the invention completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the present invention is not limited to specific details and illustrates here and the legend described.

Claims (8)

1. based on an electric drive system for two shift transmissions, it is characterized in that, comprising:
Driving mechanism, it comprises live axle;
Epicyclic train, it comprises sun gear, planet carrier and ring gear; Described sun gear is fixedly connected with described live axle; And
Brake assembly, it is fixedly installed in case of transmission, and optionally connects described ring gear, thus realizes the static of ring gear or rotate;
Mono-directional overrun clutch, it comprises inner ring and the outer shroud of coaxial setting, and described outer shroud can the described inner ring of unidirectional drive rotate facing one direction; Described outer shroud is fixedly connected with described planet carrier;
Clutch, it is optionally in conjunction with described sun gear and described inner ring;
Output shaft, it is rotatable is supported on described case of transmission, for outputing power;
Wherein, when being in a gear, ring gear is fixed by described brake assembly, and described clutch makes sun gear be separated with inner ring; When being in two gears, ring gear is fixed by described brake assembly, and described clutch makes sun gear and interior engagement of loops; When be in reverse gear time, described brake assembly makes ring gear freely, and described clutch makes sun gear and interior engagement of loops.
2. the electric drive system based on two shift transmissions according to claim 1, it is characterized in that, also comprise casing assembly, described casing assembly comprises main casing, output terminal sub-shell, end sub-shell, forms the first receiving cavity between described main casing and end sub-shell; The second receiving cavity is formed between described main casing and output terminal sub-shell; Between described first receiving cavity and the second receiving cavity, chamber wall arranges the through hole being used for live axle described in rotary support.
3. the electric drive system based on two shift transmissions according to claim 2, is characterized in that, described driving mechanism is motor.
4. the electric drive system based on two shift transmissions according to claim 2, is characterized in that, described brake assembly comprises:
Brake hub, it is fixedly connected with described main casing;
Brake plunger, it is communicated with described break oil input channel;
Brake disc, it is fixedly connected with described ring gear;
Wherein, when described break oil input channel is oil-filled, oil can promote described brake plunger and move described brake disc and brake hub joint.
5. the electric drive system based on two shift transmissions according to claim 4, is characterized in that, described clutch comprises:
Clutch hub, it is fixedly connected with sun gear;
Clutch plunger, it is communicated with clutch oil input channel;
Clutch disk, it is fixedly connected with described inner ring;
Wherein, when clutch oil input channel is oil-filled, oil promotes clutch plunger makes clutch disk and clutch plate compress, clutch hub and clutch disk to be engaged.
6. the electric drive system based on two shift transmissions according to claim 5, is characterized in that, also comprise hydraulic system assembly, and it can be that described break oil input channel and clutch oil input channel are oil-filled, to change the working state of brake assembly and clutch.
7. the electric drive system based on two shift transmissions according to claim 6, is characterized in that, described hydraulic system assembly comprises:
Oil pump, hydraulic oil can pressurize by it;
Clutch solenoid valve, it is connected with described clutch oil input channel, optionally makes the oil in oil pump enter into described clutch oil input channel;
Break solenoid valve, it is connected with described break oil input channel, optionally makes the oil in oil pump enter into described break oil input channel.
8. the electric drive system based on two shift transmissions according to claim 7, is characterized in that, described clutch solenoid valve is normal-closed electromagnetic valve, and break solenoid valve is normal-open electromagnetic valve.
CN201610045539.8A 2016-01-22 2016-01-22 A kind of power drive system based on two shift transmissions Active CN105526318B (en)

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CN105864372A (en) * 2016-06-24 2016-08-17 吉林博承传动系统科技有限公司 Planet row type two-gear transmission and gear shift control method thereof
CN106678357A (en) * 2017-01-22 2017-05-17 北京航空航天大学 Two-gear automatic transmission hydraulic system for pure electric car
CN107499119A (en) * 2017-08-02 2017-12-22 武汉理工大学 A kind of automobile-used single epicyclic train two of integrated electric keeps off drive system
CN107701664A (en) * 2017-11-09 2018-02-16 屠申富 The transmission mechanism of bi-directional variable speed motor
CN109340324A (en) * 2018-12-19 2019-02-15 绍兴前进齿轮箱有限公司 A kind of power shift gear-box for wheel excavator
CN111677822A (en) * 2019-12-24 2020-09-18 熵零技术逻辑工程院集团股份有限公司 Driving mechanism
CN113513563A (en) * 2021-04-26 2021-10-19 合肥工业大学 Multi-gear hub transmission with three motors and two brakes
CN115366671A (en) * 2022-08-26 2022-11-22 燕山大学 Overrunning clutch type permanent magnet two-gear transmission of electric automobile and gear shifting method thereof
WO2023236231A1 (en) * 2022-06-10 2023-12-14 刘建平 Transmission having controllable multi-state overrunning clutch

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