CN103231643A - Electro-hydraulic hybrid electric bus with double energy storage systems - Google Patents
Electro-hydraulic hybrid electric bus with double energy storage systems Download PDFInfo
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- CN103231643A CN103231643A CN2013101736821A CN201310173682A CN103231643A CN 103231643 A CN103231643 A CN 103231643A CN 2013101736821 A CN2013101736821 A CN 2013101736821A CN 201310173682 A CN201310173682 A CN 201310173682A CN 103231643 A CN103231643 A CN 103231643A
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- 238000004146 energy storage Methods 0.000 title claims abstract description 58
- 238000004886 process control Methods 0.000 claims description 35
- 230000005540 biological transmission Effects 0.000 claims description 31
- 239000003921 oil Substances 0.000 claims description 28
- 239000007788 liquid Substances 0.000 claims description 19
- 238000009825 accumulation Methods 0.000 claims description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000002828 fuel tank Substances 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 239000010720 hydraulic oil Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000005381 potential energy Methods 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 208000028659 discharge Diseases 0.000 description 6
- 230000005611 electricity Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
Abstract
The invention relates to an electro-hydraulic hybrid electric bus with double energy storage systems. According to the hybrid electric bus, an auxiliary energy storage system and a braking energy storage system are combined, inertia potential energy of a large electric bus during traveling is converted into hydraulic energy to be stored in a bag type accumulator through control of systems, when the bus is required to be started, the hydraulic energy is converted into mechanical energy to drive the bus to go forward, the bus is driven by electric energy after a certain speed is reached, and when the bus is driven through hydraulic energy, a drive motor of the original electric bus does not work, so that consumption of electric energy can be avoided, and energy is saved. According to the hybrid electric bus, when the pressure does not exist in the bag type accumulator, the bus is started through the auxiliary energy storage system instead of the high-power motor, and the power consumption of auxiliary energy storage is much lower than that of the high-power electric energy when the bus is started, so that energy is saved; and when the bus runs at an uniform speed, the energy consumption is reduced, and the capacity of a battery pack and the rated power of the motor of the electro-hydraulic hybrid electric bus with double energy storage systems can be reduced by 1/3.
Description
Technical field
What the present invention relates to is that a kind of genemotor is the city electric passenger vehicle of active force, what be specifically related to is to combine with auxiliary energy-storage system and braking energy-storage system, potential energy during with vehicle operating when self kinetic energy and vehicle descending etc. is converted into the city electric passenger vehicle of the propulsion source of HM Hydraulic Motor, cooperation by driving engine active force and oil motor power-assisted, realize the purpose of energy-saving and emission-reduction, the present invention is adapted to the electrobus that moves at urban highway, belongs to traffic and transport field.
Background technology
The city all adopts lithium cell as propulsion source with the mature technology of new forms of energy electrobus present stage, and with the direct motor drive vehicle, simple in structure, speed control is convenient and do not have discharging under steam.But its weak point is that battery pack is bulky, deal heavy, passenger vehicle can reach 3 tons with the 500AH battery weight, charging duration is long, sufficient about 4 hours of 500AH, battery pack is expensive, and setting up of the battery-charging station of battery power passenger vehicle also is a very big input. the therefore power consumption of how to save electronic motorcoach, alleviate battery capacity and weight, reduce the battery pack price, reduce electrical motor rating horsepower and weight, improving the effective utilization of electronic motorcoach, is the problem to be solved in the present invention.
Summary of the invention
The present invention converts the control of electronic motorcoach inertia potential energy in the process of moving by system to hydraulic pressure and can be stored in the bladder type hydropneumatic accumulator, control by system when vehicle need start can convert hydraulic pressure to mechanical energy and drive vehicle and advance, and drives normal vehicle operation by electric energy again after reaching certain speed.The driving motor of former battery-driven car is not worked in the time of starting with hydraulic pressure, thereby does not have the consumption of electric energy, reaches purpose of energy saving.The object that the present invention adapts to is city Large Electric bus transportation car, and the working condition because city bus frequently is in starting, travels, stops to restart in operational process provides possibility for braking accumulation of energy and hydraulic efficiency starting.Electrical motor is in high-power, high pulling torque output stage during vehicle launch, also is the stage that battery pack is in heavy-current discharge.So it is apparent that electronic motorcoach can start its energy-saving effect with hydraulic pressure.Because of the stop spacing of city bus shorter, for avoiding the not enough of between two stop spacings contingent accumulation of energy, the present invention is provided with the auxiliary energy-storage system, namely when vehicle immobilization, do not reach setting value as accumulation of energy this moment pressure, little auxiliary energy-storage pump running automatically in the system of the present invention, supplementary pressure oil is to setting value in the bladder type hydropneumatic accumulator.Because the hydraulic pump discharge in the auxiliary energy-storage system is very little, the power of its driving motor is also very little, and the ratio of required consumption of current also was very little when the consumption of current that is equivalent to 1/25. thereby its additional accumulation of energy of vehicle driving motor power started with power supply with vehicle.When electronic motorcoach need restart behind long-time stagnation of movement, will make battery pack be in the heavy-current discharge stage and consume a large amount of electric energy (so time energy storage in do not have the hydraulic pressure energy) as drive vehicle with electric energy.This moment, electric process control system can instruct the auxiliary energy-storage system works, hydraulic oil is squeezed into bladder type hydropneumatic accumulator make its pressure to setting value, can start with hydraulic pressure then.What use because of the auxiliary energy-storage system is that its driving power of Hydraulic Pump of high-pressure low-flow is very little, so the ratio of required consumption of current also is very little when the consumption of current during auxiliary energy-storage starts with power supply with vehicle.
The two energy-storage system hybrid power passenger cars of a kind of electric liquid of the present invention, this passenger vehicle comprises:: fuel tank 1, bladder type hydropneumatic accumulator 2, vehicle bridge 3 before the battery-driven car, radiator 4, boiler check valve 5, hydraulic pressure process control system 6, auxiliary energy-storage system motors 7, auxiliary energy-storage system liquid press pump 8, pneumatic process control system 9, bent axis type axial piston pump 10, hold exoergic transmission gearbox 11, battery-driven car driving motor 12, transmission shaft 13, vehicle bridge 14 behind the battery-driven car, electric process control system 15, pressure sensor 16, car speed sensor 17, reversing sensor 18, braking sensor 19, throttle sensor 20, battery pack 21, its method of attachment is: during auxiliary energy-storage, electrobus is in suspended state, 7 rotations of auxiliary energy-storage system motors, drive the 8 rotation oil-feeds of auxiliary energy-storage system liquid press pump, hydraulic oil becomes high pressure oil, enter bladder type hydropneumatic accumulator 2, when the pressure in the bladder type hydropneumatic accumulator reaches setting value, auxiliary energy-storage system motors 7 quits work, during exoergic, electrobus remains static, high pressure oil in the bladder type hydropneumatic accumulator 2 promotes bent axis type axial piston pump 10 rotations, driving vehicle by transmission shaft 13 advances, battery pack 21 beginnings provide electric energy to the battery-driven car driving motor after reaching certain speed of a motor vehicle, battery-driven car driving motor normal operation, driving vehicle by transmission shaft 13 advances, passenger vehicle relies on electric energy to enter normal motoring condition, during the braking accumulation of energy, the battery-driven car driving motor 12 of electrobus has quit work, vehicle is slidable travel under the effect of force of inertia, hold exoergic transmission gearbox 11 and drive bent axis type axial piston pump 10 rotations, the corresponding valve member of compression high pressure oil in hydraulic pressure process control system 6 squeezed in the bladder type hydropneumatic accumulator 2 and stored, reached setting value as the pressure in the bladder type hydropneumatic accumulator 2, brake accumulation of energy and play retarded acting this moment.
Characteristics of the present invention:
1. the two energy-storage system hybrid power passenger cars of the present invention's electricity liquid store the energy transmission gearbox is attached to the battery-driven car driving motor with flange rear end, the front end of its input shaft is connected with combined cover with the shaft extension of battery-driven car electrical motor rear end, braking energy in the battery-driven car driving process is passed to bent axis type axial piston pump make its rotary pump oil by storing wet friction clutch in can transmission gearbox, or the output torque of HM Hydraulic Motor is passed to vehicle bridge drive vehicle and advance.The present invention stores the steel friction clutch that can transmission gearbox adopts and has that volume is little, rigidity is big, driving torque is big, wear-resisting long service life, combination advantages such as friction, noiselessness when separating.
2. two its mouths of energy-storage system hybrid power passenger car of the present invention's electricity liquid link to each other with the shaft extension of bent axis type axial piston pump with an inner spline housing.Switch the power of transmission gearbox input and output with the steel friction clutch in the inside of holding the exoergic transmission gearbox.The positive pressure of steel friction clutch comes from an annular Pneumatic pressure cylinder, and the big I of its positive pressure is regulated by pneumatic process control system, to adapt to different output torques.
3. the power element of the accumulation of energy of the two energy-storage system hybrid power passenger cars of the present invention's electricity liquid and exoergic adopts the shared form of Hydraulic Pump and HM Hydraulic Motor.Utilize the invertibility of bent axis type axial piston pump, by adjusting the size of distributing groove in the pump housing, can have the compatibility of Hydraulic Pump and HM Hydraulic Motor well, can accomplish a thing dual-purpose.When plunger pump is as hydraulic pump works when inclined shaft, force of inertia by vehicle bridge, transmission shaft, motor reel, hold the exoergic transmission gearbox and drive the bent axis type axial piston pump rotation.The oil inlet of bent axis type axial piston pump advances low pressure oil, and oil outlet goes out high pressure oil, and high pressure oil squeezed in the bladder type hydropneumatic accumulator stores.When bent axis type axial piston pump is worked as HM Hydraulic Motor, the oil inlet of bent axis type axial piston pump advances high pressure oil, oil outlet goes out low pressure oil, and bent axis type axial piston pump rotates under the promotion of high pressure oil, drives vehicle by rotor shaft, transmission shaft, the vehicle bridge of holding exoergic transmission gearbox, electrical motor and advances.
4. the energy when the auxiliary energy-storage system of the two energy-storage system hybrid power passenger cars of the present invention electricity liquid remedies the possible insufficient pressure of braking accumulation of energy or provides battery-driven car to lean on hydraulic pressure to start when battery-driven car starts for the first time with the Hydraulic Pump of the little discharge capacity of high pressure.Might be subjected to the influence of operating mode at that time in the driving process of electronic public transport motorcoach between two stations and brake accumulation of energy and fail to reach setup pressure value, and influence hydraulic pressure next time can start, the auxiliary energy-storage system starts work automatically when vehicle stops, and promotes pressure in the energy storage to setting value with low power consumption.What use because of the auxiliary energy-storage system is the Hydraulic Pump of the little discharge capacity of high pressure, so its consumption of current is very little.In addition when vehicle behind long-time stagnation of movement, do not have pressure in the bladder type hydropneumatic accumulator this moment, as being in the heavy-current discharge stage with electric energy starting battery pack this moment, will consume a large amount of electric energy.Thereby this moment start the auxiliary energy-storage system and promote pressure in the energy storage to setting value, can start with hydraulic pressure then.Because the consumption of current of auxiliary energy-storage is much smaller than the consumption of current with electric energy launching trolley, so be energy-conservation at this moment, when vehicle entered at the uniform velocity the speed of a motor vehicle, energy consumption reduced, and battery and electrical motor rating horsepower that therefore should the two energy-storage system hybrid power passenger cars of electricity liquid can reduce.
5. use the present invention can save power consumption 30%, as keep vehicle galvanic battery capacity constant increase the continuation of the journey mileage 30%, also can reduce dead weight of vehicle and cost-cutting by reducing battery capacity 30% and reducing electrical motor rating horsepower 30% than the passenger transport line of short distance in this way, obtain low-cost and better power consumption ratio.
Fig. 1 is apparatus of the present invention scheme drawing.
The specific embodiment
As shown in Figure 1:
The present invention mainly contains:
Fuel tank 1, bladder type hydropneumatic accumulator 2, vehicle bridge 3 before the battery-driven car, radiator 4, boiler check valve 5, hydraulic pressure process control system 6, auxiliary energy-storage system motors 7, auxiliary energy-storage system liquid press pump 8, pneumatic process control system 9, bent axis type axial piston pump 10, hold exoergic transmission gearbox 11, battery-driven car driving motor 12, transmission shaft 13, vehicle bridge 14 behind the battery-driven car, electric process control system 15, pressure sensor 16, car speed sensor 17, reversing sensor 18, braking sensor 19, throttle sensor 20, battery pack 21.
1, auxiliary energy-storage: electronic motorcoach is in suspended state during auxiliary energy-storage.This moment electric process control system 15 automatic detected pressures signals, vehicle speed signal, astern signal, as the detected pressures signal less than setting value, vehicle speed signal is zero and when not having astern signal, corresponding valve member under the instruction of electric process control system 15 in the hydraulic pressure process control system 6 is opened, 7 rotations of auxiliary energy-storage system motors, driving 8 rotations of auxiliary energy-storage system liquid press pump buys oil, hydraulic oil is through fuel tank 1 boiler check valve 5, corresponding valve member in the hydraulic pressure process control system 6 enters auxiliary energy-storage system liquid press pump 8, hydraulic oil becomes high pressure oil under the continuous rotation of auxiliary energy-storage Hydraulic Pump 8 and compression, squeeze into bladder type hydropneumatic accumulator 2 through the corresponding valve member in the hydraulic pressure process control system 6 again, when the pressure in the bladder type hydropneumatic accumulator reaches setting value, auxiliary energy-storage system motors 7 quits work under the instruction of electric process control system 6, and hydraulic pressure process control system 6 restPoses.
2, hydraulic pressure energy exoergic: electronic motorcoach remains static when utilizing hydraulic pressure to start vehicle.After electric process control system 15 receives the signal of throttle sensor 20, instruct pneumatic process control system 9 to work, under action of air pressure, hold the steel friction clutch combination in the exoergic transmission gearbox 11.Corresponding valve member in the electric process control system 15 instruction hydraulic pressure process control systems 6 is opened, the corresponding valve member of high pressure oil in the bladder type hydropneumatic accumulator 2 in hydraulic pressure process control system 6 enters bent axis type axial piston pump 10, high pressure oil promotes bent axis type axial piston pump 10 rotations, rotor shaft, the transmission shaft 13 of the bent axis type axial piston pump 10 of rotation by holding exoergic transmission gearbox 11, battery-driven car driving motor 12 drives vehicle bridge 14 rotations after the vehicle bridge 3 and battery-driven car before the battery-driven cars, drives vehicle and advances.Corresponding valve member, the radiator 4 of low pressure oil in hydraulic pressure process control system 6 that bent axis type axial piston pump 10 is discharged flows back to fuel tank 1.Step on the throttle after reaching certain speed of a motor vehicle, under the instruction of electric process control system 15, battery pack 21 beginnings provide electric energy to the battery-driven car driving motor, and battery-driven car driving motor normal operation drives vehicle by transmission shaft 13 and advances.Motorcoach relies on electric energy to enter normal motoring condition.
3, braking accumulation of energy: the driving motor 12 of electronic motorcoach has quit work during the braking accumulation of energy, and vehicle is slidable travel under the effect of force of inertia.Receive pneumatic process control system 9 work of instruction behind the signal of braking sensor 16 when electric process control system 15, under action of air pressure, hold the steel friction clutch combination in the exoergic transmission gearbox 11.Corresponding valve member in the electric process control system 15 instruction hydraulic pressure process control systems 6 is opened.The force of inertia of vehicle by battery-driven car before behind vehicle bridge 3 and the battery-driven car vehicle bridge 14, transmission shaft 13, battery-driven car driving motor 12 rotor shaft, hold exoergic transmission gearbox 11, drive bent axis type axial piston pump 10 rotations.The bent axis type axial piston pump 10 of rotation produces negative pressure hydraulic oil is sucked joining in the oil pocket of bent axis type axial piston pump 11 from the corresponding valve member of fuel tank 1 through boiler check valve 5, hydraulic pressure process control system 6, compression through pump housing inner plunger becomes high pressure oil again, and the corresponding valve member of high pressure oil in hydraulic pressure process control system 6 squeezed in the bladder type hydropneumatic accumulator 2 and stored under plunger pump 10 constantly rotated and compresses when inclined shaft.Reached setting value as the pressure in the bladder type hydropneumatic accumulator 2, pressure-gradient control valve, the radiator 4 of high pressure oil in hydraulic pressure process control system 6 that this moment, bent axis type axial piston pump 10 was got flows back to fuel tank 1, and brake accumulation of energy and play retarded acting this moment.
Claims (5)
1. two energy-storage system hybrid power passenger cars of an electric liquid, it is characterized in that, this passenger vehicle comprises:: fuel tank (1), bladder type hydropneumatic accumulator (2), vehicle bridge (3) before the battery-driven car, radiator (4), boiler check valve (5), hydraulic pressure process control system (6), auxiliary energy-storage system motors (7), auxiliary energy-storage system liquid press pump (8), pneumatic process control system (9), bent axis type axial piston pump (10), hold exoergic transmission gearbox (11), battery-driven car driving motor (12), transmission shaft (13), vehicle bridge behind the battery-driven car (14), electric process control system (15), pressure sensor (16), car speed sensor (17), reversing sensor (18), braking sensor (19), throttle sensor (20), battery pack (21), its method of attachment is: during auxiliary energy-storage, electrobus is in suspended state, auxiliary energy-storage system motors (7) rotation, drive auxiliary energy-storage system liquid press pump (8) rotation oil-feed, hydraulic oil becomes high pressure oil, enter bladder type hydropneumatic accumulator (2), when the pressure in the bladder type hydropneumatic accumulator reaches setting value, auxiliary energy-storage system motors (7) quits work, during exoergic, electrobus remains static, high pressure oil in the bladder type hydropneumatic accumulator (2) promotes bent axis type axial piston pump (10) rotation, driving vehicle by transmission shaft (13) advances, battery pack after reaching certain speed of a motor vehicle (21) beginning provides electric energy to the battery-driven car driving motor, battery-driven car driving motor normal operation, driving vehicle by transmission shaft (13) advances, passenger vehicle relies on electric energy to enter normal motoring condition, during the braking accumulation of energy, the battery-driven car driving motor (12) of electrobus quits work, vehicle is slidable travel under the effect of force of inertia, hold exoergic transmission gearbox (11) and drive bent axis type axial piston pump (10) rotation, the corresponding valve member of compression high pressure oil in hydraulic pressure process control system (6) squeezed in the bladder type hydropneumatic accumulator (2) and stored, reached setting value as the pressure in the bladder type hydropneumatic accumulator (2), brake accumulation of energy and play retarded acting this moment.
2. two energy-storage system hybrid power passenger cars of electric liquid according to claim 1, it is characterized in that storing transmission gearbox to be to link to each other with motor rear end plate with flange, its input end links to each other with the axle of electrical motor rear end with combined cover, its mouth links to each other with the shaft extension of bent axis type axial piston pump with an inner spline housing, switch the power of transmission gearbox input and output with the steel friction clutch in the inside of holding the exoergic transmission gearbox, the positive pressure of steel friction clutch comes from an annular Pneumatic pressure cylinder, the big I of its positive pressure is regulated by pneumatic process control system, to adapt to different output torques.
3. two energy-storage system hybrid power passenger cars of electric liquid according to claim 1, it is characterized in that its bent axis type axial piston pump is the common elements of a Hydraulic Pump and HM Hydraulic Motor, by adjusting the size of distributing groove in the bent axis type axial piston pump, the compatibility that can have Hydraulic Pump and HM Hydraulic Motor has well been accomplished a thing dual-purpose.
4. the two energy-storage system hybrid power passenger cars of electric liquid according to claim 1 is characterized in that the auxiliary energy-storage system utilizes the Hydraulic Pump of the little discharge capacity of high pressure to be used as replenishing when braking accumulation of energy insufficient pressure.
5. the two energy-storage system hybrid power passenger cars of electric liquid according to claim 1 is characterized in that under the no pressure condition, utilizing the auxiliary energy-storage system to start passenger vehicle when vehicle in bladder type hydropneumatic accumulator, replace high power motor to start passenger vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310173682.1A CN103231643B (en) | 2013-05-13 | 2013-05-13 | The two energy-storage system hybrid power passenger car of electricity liquid |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310173682.1A CN103231643B (en) | 2013-05-13 | 2013-05-13 | The two energy-storage system hybrid power passenger car of electricity liquid |
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| CN103231643A true CN103231643A (en) | 2013-08-07 |
| CN103231643B CN103231643B (en) | 2016-03-23 |
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| CN201310173682.1A Expired - Fee Related CN103231643B (en) | 2013-05-13 | 2013-05-13 | The two energy-storage system hybrid power passenger car of electricity liquid |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103552458A (en) * | 2013-11-15 | 2014-02-05 | 宁波吉江汽车制造有限责任公司 | Special range-extended hybrid school bus |
| CN110039989A (en) * | 2017-05-02 | 2019-07-23 | 北京理工大学 | Commercial vehicle hybrid transmissions with slow function |
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| CN102555758A (en) * | 2012-01-20 | 2012-07-11 | 邵群生 | Liquid and electricity hybrid power system for bus |
| WO2012102654A1 (en) * | 2011-01-27 | 2012-08-02 | Parker Hannifin Ab | Hyraulic accumulator system |
| CN203472507U (en) * | 2013-05-13 | 2014-03-12 | 苏州蓝奥汽车科技有限公司 | Electro-hydraulic hybrid electric bus with double energy storage systems |
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2013
- 2013-05-13 CN CN201310173682.1A patent/CN103231643B/en not_active Expired - Fee Related
Patent Citations (6)
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| US20100141024A1 (en) * | 2008-12-09 | 2010-06-10 | Developpement Effenco Inc. | Braking energy recovery system for a vehicle and vehicle equipped with same |
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| CN103231643B (en) | 2016-03-23 |
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