CN103231643B - The two energy-storage system hybrid power passenger car of electricity liquid - Google Patents

The two energy-storage system hybrid power passenger car of electricity liquid Download PDF

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Publication number
CN103231643B
CN103231643B CN201310173682.1A CN201310173682A CN103231643B CN 103231643 B CN103231643 B CN 103231643B CN 201310173682 A CN201310173682 A CN 201310173682A CN 103231643 B CN103231643 B CN 103231643B
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energy
vehicle
storage system
electric
hydraulic
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CN103231643A (en
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郝广城
郭一新
周宪坡
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Jiangsu blue car technology Co., Ltd.
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郭一新
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/62Hybrid vehicles

Abstract

The present invention relates to one to combine with auxiliary energy-storage system and braking energy-storage system, converting electric coach inertia potential energy in the process of moving to hydraulic energy by the control of system is stored in bladder type hydropneumatic accumulator, when vehicle need start, hydraulic energy being converted to mechanical energy drives vehicle to advance, normally travelled by electrical energy drive vehicle again after reaching certain speed, when starting with hydraulic energy, the driving motor of former battery-driven car does not work, thus there is no the consumption of electric energy, reach energy-conservation object.The present invention in vehicle bladder type hydropneumatic accumulator without under pressure condition, auxiliary energy-storage system is utilized to start passenger vehicle, high power motor is replaced to start passenger vehicle, because the consumption of current of auxiliary energy-storage is much smaller than the consumption of current starting vehicle with high-power power, so be now energy-conservation, vehicle enter at the uniform velocity the speed of a motor vehicle time, energy consumption reduces, and therefore the battery capacity of the two energy-storage system hybrid power passenger car of this electric liquid and electrical motor rating horsepower can reduce 1/3.

Description

The two energy-storage system hybrid power passenger car of electricity liquid
Technical field
The city electric passenger vehicle of to be a kind of genemotor the be active force that the present invention relates to, what be specifically related to is combine with auxiliary energy-storage system and braking energy-storage system, the city electric passenger vehicle of the propulsion source of HM Hydraulic Motor is converted into the potential energy etc. when self kinetic energy during vehicle operating and vehicle descending, by the cooperation of driving engine active force and oil motor power-assisted, realize the object of energy-saving and emission-reduction, the present invention is adapted to the electrobus run on urban highway, belongs to traffic and transport field.
Background technology
The mature technology of city New energy electric passenger vehicle present stage all adopts lithium cell as propulsion source, with motor car, structure is simple, speed control is convenient and under steam without discharge.But its weak point is that battery pack is bulky, heavy weight, passenger vehicle 500AH battery weight can reach 3 tons, charging duration is long, 500AH abundance about 4 hours, battery pack is expensive, and setting up of the battery-charging station of battery power passenger vehicle is also a very large input. therefore how to save the power consumption of electric coach, alleviate battery capacity and weight, reduce battery pack price, reduce electrical motor rating horsepower and weight, improving the effective utilization of electric coach, is the problem to be solved in the present invention.
Summary of the invention
The present invention converts electric coach inertia potential energy in the process of moving to hydraulic energy by the control of system and is stored in bladder type hydropneumatic accumulator, converting hydraulic energy to mechanical energy when vehicle need start by the control of system drives vehicle to advance, and is normally travelled after reaching certain speed by electrical energy drive vehicle again.When starting with hydraulic energy, the driving motor of former battery-driven car does not work, and does not thus have the consumption of electric energy, reaches energy-conservation object.The object that the present invention adapts to is city Large Electric bus transportation car, because city bus is frequently in startings, travelings, the stopping working condition of restarting in operational process, for braking accumulation of energy and hydraulic efficiency starting provides possibility.During vehicle launch, electrical motor is in high-power, high pulling torque output stage, is also the stage that battery pack is in heavy-current discharge.So it is apparent that electric coach hydraulic energy starts its energy-saving effect.Because the stop spacing of city bus is shorter, for avoiding the inadequate of between two stop spacings contingent accumulation of energy, the present invention is provided with auxiliary energy-storage system, namely when vehicle immobilization, as now energy-storage pressure does not reach setting value, in present system, a little auxiliary energy-storage pump can operate automatically, and in bladder type hydropneumatic accumulator, supplementary pressure oil is to setting value.Because the hydraulic pump discharge in auxiliary energy-storage system is very little, the power of its driving motor is also very little, and the ratio of consumption of current required when the consumption of current being equivalent to 1/25. thus its supplementary accumulation of energy of vehicle driving motor power starts with vehicle power is also very little.When electric coach needs to restart after long-time stagnation of movement, consume a large amount of electric energy (not having hydraulic energy because of in now energy storage) as battery pack made to be in the heavy-current discharge stage with electrical energy drive vehicle.Now electrically process control system can instruction auxiliary energy-storage system works, hydraulic oil is squeezed into bladder type hydropneumatic accumulator and makes its pressure to setting value, then start with hydraulic energy.Because of auxiliary energy-storage system is that its driving power of Hydraulic Pump of high-pressure low-flow is very little, so the ratio of consumption of current required when consumption of current during auxiliary energy-storage starts with vehicle power is also very little.
The two energy-storage system hybrid power passenger car of a kind of electric liquid of the present invention, this passenger vehicle comprises: fuel tank 1, bladder type hydropneumatic accumulator 2, battery-driven car front axle 3, 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, aerodynamic program control system 9, bent axis type axial piston pump 10, store exoergic transmission gearbox 11, electric car drive electromotor 12, transmission shaft 13, battery-driven car rear axle 14, electric process control system 15, pressure sensor 16, car speed sensor 17, car backing 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 rotates, auxiliary energy-storage system liquid press pump 8 is driven to rotate oil-feed, hydraulic oil becomes high pressure oil, enter bladder type hydropneumatic accumulator 2, when the pressure in bladder type hydropneumatic accumulator reaches setting value, auxiliary energy-storage system motors 7 quits work, during exoergic, electrobus remains static, high pressure oil in bladder type hydropneumatic accumulator 2 promotes bent axis type axial piston pump 10 and rotates, vehicle is driven to advance by transmission shaft 13, after reaching certain speed of a motor vehicle, battery pack 21 starts to provide electric energy to electric car drive electromotor, electric car drive electromotor normal operation, vehicle is driven to advance by transmission shaft 13, passenger vehicle relies on electric energy to enter normal motoring condition, during braking accumulation of energy, the electric car drive electromotor 12 of electrobus quits work, vehicle is slidable travel under the effect of force of inertia, storing exoergic transmission gearbox 11 drives bent axis type axial piston pump 10 to rotate, the corresponding valve member of compression high pressure oil in hydraulic pressure process control system 6 is squeezed in bladder type hydropneumatic accumulator 2 and is stored, as the pressure in bladder type hydropneumatic accumulator 2 reaches setting value, now brake accumulation of energy and play retarded acting.
Feature of the present invention:
1. the two energy-storage system hybrid power passenger car of the present invention's electricity liquid stores the rear end that energy transmission gearbox flange is attached to electric car drive electromotor, the front end of its input shaft and the shaft extension combined cover of electric vehicle electric machine rear end are connected together, by the wet friction clutch stored in energy transmission gearbox, the braking energy in battery-driven car driving process is passed to bent axis type axial piston pump and make its rotary pump oil, or the output torque of HM Hydraulic Motor is passed to the advance of vehicle bridge driving vehicle.The present invention store can the steel friction clutch that adopts of transmission gearbox have that volume is little, rigidity is large, driving torque is large, wear-resisting long service life, combination and the advantage such as friction, noiselessness when being separated.
2. two its mouth of energy-storage system hybrid power passenger car one inner spline housing of the present invention's electricity liquid is connected with the shaft extension of bent axis type axial piston pump.Storing the inside steel friction clutch of exoergic transmission gearbox to switch the power of transmission gearbox input and output.The positive pressure of steel friction clutch comes from an annular Pneumatic pressure cylinder, and the size of its positive pressure regulates by aerodynamic program control system, to adapt to different output torques.
3. the accumulation of energy of the two energy-storage system hybrid power passenger car of the present invention's electricity liquid and the power element of exoergic adopt the shared form of Hydraulic Pump and HM Hydraulic Motor.Utilize the invertibility of bent axis type axial piston pump, by the size of distributing groove in the adjustment pump housing, the compatibility of Hydraulic Pump and HM Hydraulic Motor can be had well, a thing dual-purpose can be accomplished.When inclined shaft, plunger pump is as hydraulic pump works, force of inertia by vehicle bridge, transmission shaft, motor reel, store exoergic transmission gearbox drive bent axis type axial piston pump rotate.The oil inlet of bent axis type axial piston pump enters low pressure oil, and oil outlet goes out high pressure oil, and is squeezed in bladder type hydropneumatic accumulator by high pressure oil and store.When bent axis type axial piston pump works as HM Hydraulic Motor, the oil inlet of bent axis type axial piston pump enters 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, by storing exoergic transmission gearbox, the rotor shaft of electrical motor, transmission shaft, the advance of vehicle bridge driving vehicle.
4. the energy when auxiliary energy-storage system of the two energy-storage system hybrid power passenger car of the present invention's electricity liquid makes up the possible insufficient pressure of braking accumulation of energy with the Hydraulic Pump of high-pressure small-displacement or provides battery-driven car to lean on hydraulic energy to start when battery-driven car first time starts.Likely brake accumulation of energy in the driving process of Electric Transit Bus between two stations by the impact of operating mode at that time and fail to reach setup pressure value, and impact hydraulic energy next time starts, when vehicle stops, auxiliary energy-storage system starts work automatically, promotes pressure in energy storage to setting value with low power consumption.Because of auxiliary energy-storage system is the Hydraulic Pump of high-pressure small-displacement, so its consumption of current is very little.In addition when vehicle is after long-time stagnation of movement, now in bladder type hydropneumatic accumulator without pressure, be in the heavy-current discharge stage as started now battery pack with electric energy, a large amount of electric energy will be consumed.Thus now start auxiliary energy-storage system and promote pressure in energy storage to setting value, then start with hydraulic energy.Because the consumption of current of auxiliary energy-storage is much smaller than the consumption of current with electric energy launching trolley, so be now energy-conservation, vehicle enter at the uniform velocity the speed of a motor vehicle time, energy consumption reduces, and therefore the battery of the two energy-storage system hybrid power passenger car of this electric liquid and electrical motor rating horsepower can reduce.
5. use the present invention can save power consumption 30%, as kept, vehicle galvanic battery capacity is constant increases course continuation mileage 30%, also reduce dead weight of vehicle and reduce costs by reducing battery capacity 30% and reducing electrical motor rating horsepower 30% compared with the passenger transport line of short distance in this way, obtaining low cost and better power consumption ratio.
Fig. 1 is apparatus of the present invention schematic diagram.
Detailed description of the invention
As shown in Figure 1:
The present invention mainly contains:
Fuel tank 1, bladder type hydropneumatic accumulator 2, battery-driven car front axle 3, 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, aerodynamic program control system 9, bent axis type axial piston pump 10, store exoergic transmission gearbox 11, electric car drive electromotor 12, transmission shaft 13, battery-driven car rear axle 14, electric process control system 15, pressure sensor 16, car speed sensor 17, car backing sensor 18, braking sensor 19, throttle sensor 20, battery pack 21.
1, auxiliary energy-storage: during auxiliary energy-storage, electric coach is in suspended state.Now electric process control system 15 detected pressures signal automatically, vehicle speed signal, astern signal, as detected pressures signal is less than setting value, vehicle speed signal be zero and without astern signal time, corresponding valve member under the instruction of electric process control system 15 in hydraulic pressure process control system 6 is opened, auxiliary energy-storage system motors 7 rotates, drive auxiliary energy-storage system liquid press pump 8 to rotate to buy oil, hydraulic oil is through fuel tank 1 boiler check valve 5, corresponding valve member in 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 and compression of auxiliary energy-storage Hydraulic Pump 8, corresponding valve member again in hydraulic pressure process control system 6 squeezes into bladder type hydropneumatic accumulator 2, when the pressure in bladder type hydropneumatic accumulator reaches setting value, under the instruction of electric process control system 6, auxiliary energy-storage system motors 7 quits work, hydraulic pressure process control system 6 restPoses.
2, hydraulic energy exoergic: utilize hydraulic energy start vehicle time electric coach remain static.After electric process control system 15 receives the signal of throttle sensor 20, instruction aerodynamic program control system 9 works, and the steel friction clutch stored under the effect of air pressure in exoergic transmission gearbox 11 combines.Corresponding valve member in electric process control system 15 instruction hydraulic pressure process control system 6 is opened, the corresponding valve member of high pressure oil in 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 and rotates, the bent axis type axial piston pump 10 rotated rotates by storing exoergic transmission gearbox 11, the rotor shaft of electric car drive electromotor 12, transmission shaft 13 driving electric car front axle 3 and battery-driven car rear axle 14, drives vehicle to advance.The corresponding valve member of low pressure oil in hydraulic pressure process control system 6, the radiator 4 of bent axis type axial piston pump 10 discharge flow 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 starts to provide electric energy to electric car drive electromotor, and electric car drive electromotor normal operation drives vehicle to advance by transmission shaft 13.Motorcoach relies on electric energy to enter normal motoring condition.
3, accumulation of energy is braked: during braking accumulation of energy, the driving motor 12 of electric coach quits work, and vehicle is slidable travel under the effect of force of inertia.After electric process control system 15 receives the signal of braking sensor 16, instruction aerodynamic program control system 9 works, and the steel friction clutch stored under the effect of air pressure in exoergic transmission gearbox 11 combines.Corresponding valve member in electric process control system 15 instruction hydraulic pressure process control system 6 is opened.The force of inertia of vehicle by the rotor shaft of battery-driven car front axle 3 and battery-driven car rear axle 14, transmission shaft 13, electric car drive electromotor 12, store exoergic transmission gearbox 11, drive bent axis type axial piston pump 10 to rotate.What the bent axis type axial piston pump 10 rotated produced that hydraulic oil sucks 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 by negative pressure joins in oil pocket, compression again through pump housing inner plunger becomes high pressure oil, and when inclined shaft, plunger pump 10 constantly rotates and under compression, the corresponding valve member of high pressure oil in hydraulic pressure process control system 6 is squeezed in bladder type hydropneumatic accumulator 2 and stored.As the pressure in bladder type hydropneumatic accumulator 2 reaches setting value, the pressure-gradient control valve of high pressure oil in hydraulic pressure process control system 6, radiator 4 that now bent axis type axial piston pump 10 is got flow back to fuel tank 1, now brake accumulation of energy and play retarded acting.

Claims (3)

1. the two energy-storage system hybrid power passenger car of electric liquid, it is characterized in that, this passenger vehicle comprises: fuel tank (1), bladder type hydropneumatic accumulator (2), battery-driven car front axle (3), 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), aerodynamic program control system (9), bent axis type axial piston pump (10), store exoergic transmission gearbox (11), electric car drive electromotor (12), transmission shaft (13), battery-driven car rear axle (14), electric process control system (15), pressure sensor (16), car speed sensor (17), car backing 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) rotates, auxiliary energy-storage system liquid press pump (8) is driven to rotate oil-feed, hydraulic oil becomes high pressure oil, enter bladder type hydropneumatic accumulator (2), when the pressure in bladder type hydropneumatic accumulator reaches setting value, auxiliary energy-storage system motors (7) quits work, during exoergic, electrobus remains static, high pressure oil in bladder type hydropneumatic accumulator (2) promotes bent axis type axial piston pump (10) and rotates, vehicle is driven to advance by transmission shaft (13), after reaching certain speed of a motor vehicle, battery pack (21) starts to provide electric energy to electric car drive electromotor, electric car drive electromotor normal operation, vehicle is driven to advance by transmission shaft (13), passenger vehicle relies on electric energy to enter normal motoring condition, during braking accumulation of energy, the electric car drive electromotor (12) of electrobus quits work, vehicle is slidable travel under the effect of force of inertia, storing exoergic transmission gearbox (11) drives bent axis type axial piston pump (10) to rotate, the corresponding valve member of compression high pressure oil in hydraulic pressure process control system (6) is squeezed in bladder type hydropneumatic accumulator (2) and is stored, as the pressure in bladder type hydropneumatic accumulator (2) reaches setting value, now brake accumulation of energy and play retarded acting, store and can be connected with motor rear end plate by transmission gearbox flange, its input end combined cover is connected with the axle of electrical motor rear end, its mouth one inner spline housing is connected with the axle of bent axis type axial piston pump, storing the inside steel friction clutch of exoergic transmission gearbox to switch the power of transmission gearbox input and output, the positive pressure of steel friction clutch comes from an annular Pneumatic pressure cylinder, the size of its positive pressure regulates by aerodynamic program control system, to adapt to different output torques, bent axis type axial piston pump is the common elements of a Hydraulic Pump and HM Hydraulic Motor, by the size of distributing groove in adjustment bent axis type axial piston pump, the compatibility of Hydraulic Pump and HM Hydraulic Motor can be had well, accomplish a thing dual-purpose.
2. the two energy-storage system hybrid power passenger car of electric liquid according to claim 1, is characterized in that auxiliary energy-storage system utilizes the Hydraulic Pump of high-pressure small-displacement to be used as supplementing when braking energy-storage pressure and being not enough.
3. the two energy-storage system hybrid power passenger car of electric liquid according to claim 1, it is characterized in that working as vehicle without under pressure condition in bladder type hydropneumatic accumulator, utilize auxiliary energy-storage system to start passenger vehicle, replacement high power motor starts passenger vehicle.
CN201310173682.1A 2013-05-13 2013-05-13 The two energy-storage system hybrid power passenger car of electricity liquid Expired - Fee Related CN103231643B (en)

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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
CN107215200B (en) * 2017-05-02 2019-09-20 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
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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Publication number Priority date Publication date Assignee Title
CN201472134U (en) * 2009-09-11 2010-05-19 北京工业大学 Mechanic-hydraulic hybrid power driven system
CN102555758A (en) * 2012-01-20 2012-07-11 邵群生 Liquid and electricity hybrid power system for bus
CN102529671A (en) * 2012-02-22 2012-07-04 苏州蓝奥汽车科技有限公司 Double-power passenger vehicle hydraulic controller with constant-pressure speed regulating device
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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