CN102673358B - A kind of pure electric automobile chassis - Google Patents
A kind of pure electric automobile chassis Download PDFInfo
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- CN102673358B CN102673358B CN201210011699.2A CN201210011699A CN102673358B CN 102673358 B CN102673358 B CN 102673358B CN 201210011699 A CN201210011699 A CN 201210011699A CN 102673358 B CN102673358 B CN 102673358B
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- battery
- vehicle frame
- chassis
- electric automobile
- pure electric
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Abstract
The invention discloses a kind of pure electric automobile chassis.Comprise repacking chassis, the position reserved after driving engine on the vehicle frame on repacking chassis above front axle is removed is provided with electrical motor, the output shaft of electrical motor and power-transfer clutch are rigidly connected by flange and by transmission of power to change-speed box, front axle, vehicle frame is equipped with the polylith battery to powering electric motors, each battery be divided into that four parts are installed on that correspondence on vehicle frame arranges first, two, three, on four battery installing racks, pure electric automobile chassis of the present invention is by scattering device before and after battery, do not change the chassis centroid position of former car and integral structure as far as possible and meet the requirement of city car, productive costs can be greatly reduced.
Description
Technical field
The invention belongs to electronlmobil field, particularly a kind of pure electric automobile chassis.
Background technology
The high speed development of auto-industry and people, for the continuous increase of automobile user demand, have driven the lasting rising of automobile production and recoverable amount, thus exacerbate energy problem and the environmental problem of the current common concern of people.The feature that pure electric automobile has low noise, pollution-free, energy source is diversified, energy efficiency is high is the important channel of the automotive problems solved in urbanization.Development pure electric automobile, by adjustment Industry Structure, the innovation ability improving major fields and the market competitiveness, promotes that coordinated development of the economy and society exerts far reaching influence.From the development of auto-industry, developing rapidly of electronlmobil is irreversible trend.Therefore, China should catch this opportunity as world car big producing country, accelerates the development of electronlmobil.
In recent decades, developed country is that the exploitation of battery-driven car has dropped into a large amount of manpower and financial resources, and every correlation technique of battery-driven car also achieves great progress.Since working out elec. vehicle study program from the U.S. in 1976, General Corporation and Ford all drop into the research and development that substantial contribution carries out electronlmobil, but the too high and continual mileage of the price due to pure electric vehicle fails to meet the demand of user, and therefore such as EV-1, ChryslerEPIC etc. stop production in succession.But American national laboratory also proceeds the in-depth study of the advanced drive system of pure electric automobile, advanced battery and management system thereof etc.European Countries has set up European Electric Auto Association, and obtains support and the subsidy of Economic Commission of Europe.Japanese government takes much count of the development of electronlmobil always, has formulated Development of Electric Vehicles plan very early.In China, since " eight or five ", electrocar, e-bus, electric vehicle system design and development, subsystem and parts are developed, energy storing device, demonstrating running and the many-side such as standard formulation and research in policy all achieve many achievements.Tsing-Hua University has just put on display the electronic minibus of EV6580 type in the international EV exhibition in nineteen ninety Beijing, the function sample cars such as multiple EV, HEV, FCEV that have been many automobile manufacturing company developments again after that.Xi'an Communications University has researched and developed 15 national inventing patents at electronlmobil key technology area, duly authorized 5; In the research of electronlmobil drived control and Energy Recovery Technology, take the lead in robust control to be applied on Energy Recovery for Electric Vehicle.
The development of electronlmobil defines common recognition in China, but in view of the factor of technical restriction and present situation, and China, to the various researchs of electronlmobil, mostly all can only to be based upon on the basis of remoulded car.Electronlmobil will move towards market-oriented, practical, from the feature of itself, must carry out electronlmobil design truly, inherently could improve the performance of car load.Therefore, in today that battery technology not yet makes a breakthrough, how to utilize the storage battery of finite energy to reequip performance-oriented as far as possible electronlmobil, the very worth discussion of its method of modifying.
Summary of the invention
The object of the present invention is to provide a kind of with original pure electric automobile chassis taking Thermal Motor as the car chassis of propulsion source and repack into.
Technical scheme of the present invention is: a kind of pure electric automobile chassis, comprise at least removal of engine, fuel tank and at least retain vehicle frame, front axle, rear axle, power-transfer clutch, the repacking chassis of being changed by motor-vehicle chassis of change-speed box, repacking chassis is propons drive-type chassis, the position reserved after driving engine on vehicle frame above front axle is removed is provided with electrical motor, the output shaft of electrical motor is connected with driven by clutches and by transmission of power to change-speed box, front axle, vehicle frame is equipped with the polylith battery to powering electric motors, each battery be divided into that four parts are installed on that correspondence on vehicle frame arranges first, two, three, on four battery installing racks, first battery installing rack is fixed on the vehicle frame in electrical motor front, second battery installing rack to be located at above electrical motor and to be fixed on vehicle frame, before 3rd battery installing rack is fixed on, between rear axle on the vehicle frame of the position of rear axle, 4th battery is fixed on the vehicle frame at rear axle rear, 4th battery installing rack is also provided with the controller controlling motor and run.
Described each battery installing rack include the undercarriage fixed with vehicle frame and be assemblied on undercarriage for putting the added of storage battery, the pulley gear slided for both and the latching device be fixed together are housed between upper and lower frame.
Described electrical motor is alternating current asynchronous squirrel-cage motor.
Described electrical motor horizontal positioned, adopts flange to be rigidly connected with power-transfer clutch.
Described battery is lead-acid battery.
Described repacking chassis also comprises the brake system of drum-type after shroud and electric boosted formula steering swivel system.
Described repacking chassis also comprises bumper and forward and backward suspension, and the span of the steel wire diameter of the spring of forward and backward suspension is 14-16mm.
Pure electric automobile chassis of the present invention is by scattering device before and after battery, and do not change the chassis centroid position of former car and integral structure as far as possible and meet the requirement of city car, the Parameters variation of major part is little, can greatly reduce productive costs.
Further, electrical motor horizontal positioned, adopts flange to be rigidly connected with power-transfer clutch, can increase its rigidity so on the one hand, also can reduce transmission link on the other hand, reduces mechanical loss, improves output efficiency, extending driving range.
Further, the battery that chassis is arranged is lead-acid battery, and it arranges the centroid position not changing former car as far as possible, and as far as possible near electric motor and controller system, to improve stability, the control comfort of car load, reduces the electric energy loss of contact resistance.
Further, drum-type after the brake system employing shroud on chassis, and use employing electric boosting steering system, make general layout more flexible.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment on pure electric automobile chassis of the present invention;
Fig. 2 is the birds-eye view of Fig. 1;
Fig. 3 is pure electric automobile acceleration capability curve of the present invention.
Detailed description of the invention
As Fig. 1, shown in Fig. 2, the embodiment on pure electric automobile chassis of the present invention, comprise at least removal of engine, fuel tank and at least retain vehicle frame 4, front axle 9, rear axle 10, power-transfer clutch 12, the repacking chassis of being changed by motor-vehicle chassis of change-speed box 3, repacking chassis is the passenger-car chassis of propons drive-type, the position reserved after driving engine on vehicle frame 4 above front axle 9 is removed is provided with electrical motor 15, electrical motor is alternating current asynchronous squirrel-cage motor, the output shaft of electrical motor 15 and power-transfer clutch 12 are rigidly connected by flange 13 and by transmission of power to change-speed box 3, front axle 9, drive the left and right front-wheel 8 of front axle 9.Vehicle frame 4 is equipped with the polylith battery to powering electric motors, battery adopts lead-acid battery and block number is more, in order to the complete vehicle quality not affecting former car distributes as far as possible, so be divided into that four parts are installed on that correspondence on vehicle frame arranges first, two, three, on four battery installing racks, first battery installing rack 1 is fixed on the vehicle frame 4 in electrical motor 15 front, second battery installing rack 14 to be located at above electrical motor 15 and to be fixed on vehicle frame 4, first, the position of two battery installing racks originally laid engine accessory power rating (water tank, inlet channel) place, be positioned at the front on chassis.3rd battery installing rack 5 is fixed on the vehicle frame 4 of the position of close rear axle 10 between forward and backward vehicle bridge.4th battery 11 is fixed on the vehicle frame 4 at rear axle 10 rear.Each battery installing rack include the undercarriage fixed with vehicle frame and be assemblied on undercarriage for putting the added of storage battery, the pulley gear slided for both and the latching device be fixed together are housed between upper and lower frame, thus can be not only convenient but also quick, laborsaving when overhauling and change storage battery.Described 4th battery installing rack 11 is also provided with control electrical motor 15 and runs the controller 7 that electrical motor is mated with car load driving system, each like this accessory equipment is more flexible in general layout, more reasonably can utilize structure space.
In addition, running device has selected the tire that load-carrying capacity is large again, strengthens the steel wire diameter of front suspension 2 and rear suspension 6 spring, retains former car shock absorber.Because former car engine is removed, change mechanical type hydraulic power steering mechanism original on vehicle frame 4 into electric booster turning mechanism in the present embodiment, vacuum booster changes electronic vacuum pump into, and the force lift of a/c system also uses driven by power instead; Certainly in other embodiments of the invention, above-mentioned power-assisted, air supply rate can not have yet, or still use the hydraulic efficiency pressure system of former car, and the transmission of power of electrical motor are given corresponding Hydraulic Pump; In addition, in other embodiments of the invention, battery carrier also can adopt the not stratified rectangular frame of stationary battery.
The mechanical parameter of electronlmobil: a. dimensional parameters: length × wide × height is 4680 × 1700 × 1423mm, wheelbase is 2656mm, and track front is 1414mm, and track rear is 1422mm, and road clearance is 138mm; B. mass parameter: curb mass is 1756kg, car load total mass 2081kg; C. change-speed box: pattern is synchro formula five grades, and speed ratio is 3.455-1.944-1.286-0.969-0.800/R3.167, and base ratio is 4.444; D. power-transfer clutch: monolithic, dry type.
The electrical quantity of electronlmobil: a. electrical motor: type is alternating current asynchronous, rating horsepower is 22kw, and rated current is 154A, and rated voltage is 240V, and rated speed of rotation is 3000r/min, and quality is 120kg; B. battery: model is lead-acid battery, single-unit capacity is 150Ah, and voltage is 12V, is of a size of 300 × 170 × 210mm, and number of battery cells is 12 joints.
The mass parameter of automobile and centroid position directly affect the main in-use performance such as the tractive force of automobile, crossing ability, braking ability and road-holding property.The method of test is adopted to measure the complete vehicle curb weight of remoulded car and the distribution on antero posterior axis thereof at this.Experimental set-up is the platform scale of Chinese first trac. research institute.Test car is unloaded, first reaches weighing platform from a direction low speed, weighs front axle quality, complete vehicle curb weight, rear axle quality successively; Then turn around, weigh three quality from contrary direction again, finally get its aviation value.Experimental result shows, after repacking, curb mass is 1756kg, and increase 636kg than former car, this is because remoulded car is pure electric automobile, it take lead-acid battery as the energy, and it is the former automobile of power that its curb mass must be greater than with combustion engine.But due to remoulded car is orientated as city car, the city gradient is less, and average ground speed is lower, so curb mass increases slightly and is unlikely to produce too much impact to dynamic property.Because storage battery takes up space very large, for rationally settling battery, move in repacking after center of gravity, axle load reaches antero posterior axis and respectively accounts for 50% and can acquire a certain degree of difficulty.But consider that the accumulator quality of increase is arranged lower, so height of center of mass will comparatively be reequiped front low after repacking, the city driving speed of a motor vehicle is not very high, f-w-d, front axle rate of load condensate is 0.48, and its tack is not a problem, and does not also have larger impact to travelling and road-holding property.
Dynamic property is the most basic, most important performance in the various performance of automobile, and it mainly can be evaluated by the index of three aspects, that is: max. climb slope i
max, maximum speed u
amaxwith pick-up time t.Obtain max. climb slope and maximum speed by the method calculated, obtain pick-up time by the method for test, verify whether remoulded car reequips successfully.
The power balance equation formula of vehicle traveling process is:
F
t=F
f+ F
w+ F
i+ F
j(1) or
In formula, F
tfor propulsive effort; F
ffor rolling resistance; F
wfor air resistance; F
ifor grade resistance; F
jfor resistance due to acceleration; T
tqfor Motor torque; i
gfor transmission ratio; i
0for final driver ratio; η
tfor driving efficiency; R is radius of wheel; M is car load total mass; F is coefficient of rolling resistance; α is inclination of ramp; C
dfor aerodynamic drag factor; A is wind area; u
afor the speed of a motor vehicle; δ is rotating mass conversion factor;
for pickup.
Because inclination of ramp α is general smaller, cos α ≈ 1 can be thought.The hill climbing ability of general so-called automobile, refers to that automobile overcomes F in good road surface
f+ F
wafter surplus energy be all used for (i.e. constant speed) overcome F
ithe gradient can climbed up during grade resistance, so make in formula (2)
just can try to achieve
Ratio of slope i can be obtained by i=tan α.The max. climb slope i of automobile
maxmax. climb slope when referring to I grade.So, use i
g1i in replacement formula (3)
gjust max. climb slope can be obtained.
From the principal parameter of SP-EV2000 electronlmobil, i
g1=3.455, i
0=4.444, m=2081kg, r=0.283m, P
eduring=22kW, T
tq=52.5Nm; C
dget 0.31, A=2m
2, f gets 0.015, η
tget 0.98.At u
aduring=50km/h, calculate i
max=42.2%, be greater than design objective 30%, meet design objective and city traffic operating needs.
Maximum speed refers to that the highest line that can reach of getting on the car on the road surface that level is good sails the speed of a motor vehicle.Make in formula (2)
α=0, with IV grade of transmitting ratio i
g5replace i
g,
In formula (4), each meaning of parameters is see the explanation of formula (2), i
g5=0.800, the value of other parameter is the same, can calculate u by formula (4)
amax=110km/h.The design objective of maximum speed is 95km/h, and visible, remoulded car can meet city traffic operating needs.
The present invention adopts in-house test, and test facility adopts micro-processor controlled DCG-10E type twin-roll chassis dynamometer.This equipment possesses the function of simulation 500kg ~ 7000kg equivalence car mass, and every 500kg is one grade, is applicable to the automobile that axle loaden mass is not more than 10t, Output power of driving wheel is not more than 160KW.Its velocity test principle is: when automobile driving car wheel drives cylinder to rotate, the gear synchronous be contained on the gear driven speed encoder on cylinder rotates, and produces impulse singla, and this signal input computing machine after treatment, demonstrates the speed of automobile.Data noise are ± 0.5%.Its pick-up time test philosophy is: when automobile reaches rate of onset, computing machine starts timing, reaches termination speed computer-chronograph and stops timing.Pick-up time is by display window Dynamic Announce.
Utilize the whole resistances in the simulation accelerated process of DCG-10E chassis dynamometer, i.e. rolling resistance, air resistance and resistance due to acceleration.Adopt I grade to change to II grade and change to III grade again, accelerate to 100km/h by Standing start and do Standing start accelerated test, adopt direct speed IV grade to accelerate to 100km/h by 30km/h with all strength and to overtake other vehicles accelerated test.According to the acceleration capability curve of test results Plotting data as shown in Figure 3.Consider city car, speed of operation is within the 40km/h that is everlasting, so tentatively determine that the pick-up time of 0 ~ 40km/h is no more than 14s, the pick-up time of 0 ~ 40km/h is 13s as seen from Figure 3, reaches designing requirement.
Claims (7)
1. a pure electric automobile chassis, is characterized in that: comprise at least removal of engine, fuel tank and at least retain vehicle frame, front axle, rear axle, power-transfer clutch, the repacking chassis of being changed by motor-vehicle chassis of change-speed box, repacking chassis is propons drive-type chassis, and the position reserved after the driving engine on vehicle frame above front axle is removed is provided with electrical motor, electrical motor and power-transfer clutch, change-speed box is pressed fore-and-aft direction and is arranged, the output shaft of electrical motor is connected with driven by clutches and by transmission of power to change-speed box, front axle, vehicle frame is equipped with the polylith battery to powering electric motors, each battery be divided into that four parts are installed on that correspondence on vehicle frame arranges first, two, three, on four battery installing racks, the first battery installing rack is fixed on the vehicle frame in electrical motor front, and the second battery installing rack to be located at above electrical motor and to be fixed on vehicle frame, and first, the position of two battery installing racks originally laid engine accessory power rating: water tank, the place of inlet channel, is positioned at the front on repacking chassis, before the 3rd battery installing rack is fixed on, between rear axle on the vehicle frame of the position of rear axle, the 4th battery is fixed on the vehicle frame at rear axle rear, and the 3rd battery and the 4th battery, all across the central axis of vehicle frame, the 4th battery installing rack are also provided with the controller controlling motor and run.
2. pure electric automobile chassis according to claim 1, it is characterized in that: described each battery installing rack includes the undercarriage fixed with vehicle frame and is assemblied in added for pond of discharging on undercarriage, and the pulley gear slided for both and the latching device be fixed together are housed between upper and lower frame.
3. pure electric automobile chassis according to claim 1, is characterized in that: described electrical motor is alternating current asynchronous squirrel-cage motor.
4. the pure electric automobile chassis according to claim 1 or 2 or 3, is characterized in that: described electrical motor horizontal positioned, adopts flange to be rigidly connected with power-transfer clutch.
5. pure electric automobile chassis according to claim 1, is characterized in that: described each battery is lead-acid battery.
6. pure electric automobile chassis according to claim 1, is characterized in that: described repacking chassis also comprises the brake system of drum-type after shroud and electric boosted formula steering swivel system.
7. pure electric automobile chassis according to claim 1, is characterized in that: described repacking chassis also comprises bumper and forward and backward suspension, and the span of the steel wire diameter of the spring of forward and backward suspension is 14-16mm.
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| CN201210011699.2A CN102673358B (en) | 2012-01-15 | 2012-01-15 | A kind of pure electric automobile chassis |
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| CN201210011699.2A CN102673358B (en) | 2012-01-15 | 2012-01-15 | A kind of pure electric automobile chassis |
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| CN102673358B true CN102673358B (en) | 2015-08-05 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104325892A (en) * | 2014-09-30 | 2015-02-04 | 大连吉祥专用车有限公司 | Pure electric traction vehicle |
| CN109975699B (en) * | 2017-12-27 | 2021-08-13 | 上海大郡动力控制技术有限公司 | Simulation test method for electric drive system of electric automobile |
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| CN2166994Y (en) * | 1993-08-24 | 1994-06-01 | 胡运雄 | Mini electric car |
| CN2825345Y (en) * | 2005-09-30 | 2006-10-11 | 深圳市陆地方舟电动车有限公司 | Front-drive electric vehicle chassis |
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| CN202029698U (en) * | 2011-03-03 | 2011-11-09 | 重庆小康汽车集团有限公司 | Chassis of electric vehicles |
| CN202448723U (en) * | 2012-01-15 | 2012-09-26 | 河南科技大学 | Chassis for pure electric automobile |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2195459Y (en) * | 1994-07-27 | 1995-04-26 | 边正富 | Miniature electric automobile |
| US20030037987A1 (en) * | 2001-08-23 | 2003-02-27 | Chernoff Adrian B. | Vehicle having systems responsive to non-mechanical control signals |
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2012
- 2012-01-15 CN CN201210011699.2A patent/CN102673358B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2166994Y (en) * | 1993-08-24 | 1994-06-01 | 胡运雄 | Mini electric car |
| CN2825345Y (en) * | 2005-09-30 | 2006-10-11 | 深圳市陆地方舟电动车有限公司 | Front-drive electric vehicle chassis |
| CN201530302U (en) * | 2009-08-10 | 2010-07-21 | 北京理工大学 | Electric truck chassis with four battery boxes and battery box replacing system thereof |
| CN201777110U (en) * | 2010-04-29 | 2011-03-30 | 比亚迪股份有限公司 | Battery mounting device for vehicles |
| CN202029895U (en) * | 2011-03-02 | 2011-11-09 | 重庆小康汽车集团有限公司 | Front-driving type chassis for mini-electric automobile |
| CN202029698U (en) * | 2011-03-03 | 2011-11-09 | 重庆小康汽车集团有限公司 | Chassis of electric vehicles |
| CN202448723U (en) * | 2012-01-15 | 2012-09-26 | 河南科技大学 | Chassis for pure electric automobile |
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