E-bike by Shivendra Kumar

8/17/2019 E-bike by Shivendra Kumar

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RAJ KUMAR GOEL INSTITUTE OF TECHNOLOGY

SubSubmitted to:Submitted to:

Assist.Prof.Assist.Prof. mr.mr.

manish sharmmanish sharma

Topic : DESIGN OF ELECTRIC BIKES

http://en.wikipedia.org/wiki/File:A_mountain_bike_styled_e-bike,_Cyclotricity_Stealth.jpg


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INDEX

1. INTRODUCTION

2. CLASSES OF E-BIKES

3. TECHNICAL

4. DESIGN VARIATIONS5. ADVANTAGES

6. DISADVANTAGES

7. ENVIRONMENTAL EFFECT

8. EXIRIENCE B! COUNTR!

". REFRENCES


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INTRODUCTION

An electric bicycle, also known asan e-bike, is a bicycle with anintegrated electric motor which can

be used for propulsion. There are a

great variety of different types of e-bikes available worldwide, from e-bikes that only have a small motor toassist the rider's pedal-power (i.e.pedelecs) to somewhat morepowerful e-bikes which tend closer to

moped-style functionality allhowever retain the ability to bepedalled by the rider and are

therefore not electric motorcycles. !-

bikes use rechargeable batteries andthe lighter varieties can travel up to"# to $" km%h (& to " mph.

http://en.wikipedia.org/wiki/Bicyclehttp://en.wikipedia.org/wiki/Electric_motorhttp://en.wikipedia.org/wiki/Pedelechttp://en.wikipedia.org/wiki/Mopedhttp://en.wikipedia.org/wiki/Bicycle_pedalhttp://en.wikipedia.org/wiki/Electric_motorcycleshttp://en.wikipedia.org/wiki/File:A2B_Ultramotor_jeh.jpghttp://en.wikipedia.org/wiki/Electric_motorcycleshttp://en.wikipedia.org/wiki/Bicycle_pedalhttp://en.wikipedia.org/wiki/Mopedhttp://en.wikipedia.org/wiki/Pedelechttp://en.wikipedia.org/wiki/Electric_motorhttp://en.wikipedia.org/wiki/Bicycle


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CLASSES OF E-BIKES

espite these legal complications, the classification of e-bikes is mainly decided by whether the e-bike's motorassists the rider using a pedal-assist system or by apower-on-demand one.

Therefore, very broadly, e-bikes can be classed as- E-bikes with pedal-assist only -These are either pedelecs

(legally classed as bicycles) or S-Pedelecs (often legallyclassed as mopeds)

E-bikes with power-on-demand and pedal-assist .

E-bikes with power-on-demand only . These often havemore powerful motors than pedelecs but not always. Themore powerful of these are legally classed as mopeds ormotorcycles.

http://en.wikipedia.org/wiki/Mopedhttp://en.wikipedia.org/wiki/Moped


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HO# DOES IT #ORK$

*ith a dynamo lightthe kinetic energy ofthe spinning tyresturns the dynamo,

transferring energyand ultimatelypowering the light.!lectric bikes workoppositely. A +dynamoof sorts, in this case a

battery, producesenergy that transfersto kinetic energy inthe tyres and movesthem forward.


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TECHNICAL

otors and drivetrains

There are many possible types of electric motoriedbicycles with several technologies available, varying in cost

and comple/ity0 direct-drive and geared motor units areboth used.

An electric power-assist system may be added to almostany pedal cycle using chain drive, belt drive, hub motors or

friction drive.

123 hub motors are a common modern design with themotor built into the wheel hub itself and the stator fi/edsolidly to the a/le and the magnets attached to androtating with the wheel.

The power levels of motors used are influenced by availablelegal categories and are often, but not always limited to

under 4# watts.

http://en.wikipedia.org/wiki/Gearhttp://en.wikipedia.org/wiki/Wheel_hub_motorhttp://en.wikipedia.org/wiki/Brushless_DC_electric_motorhttp://en.wikipedia.org/wiki/Brushless_DC_electric_motorhttp://en.wikipedia.org/wiki/Wheel_hub_motorhttp://en.wikipedia.org/wiki/Gear


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Batteries in Electric Bikes

!-bikes use rechargeable batteries,electric motors and some form of control.

1attery systems in use include sealed lead-acid (52A), nickel-cadmium (6i3ad),

nickel-metal hydride (6i7), llithium-ion polymer (2i-ion), and lithium-iron phosphate (2i8e9:;). The energy costs of operating e-bikes are small,

but there can be considerable batteryreplacement costs.

1atteries vary according to the voltage, totalcharge capacity (amp hours), weight, the numberof charging cycles before performance degrades,and ability to handle over-voltage chargingconditions.

http://en.wikipedia.org/wiki/Rechargeable_batteryhttp://en.wikipedia.org/wiki/Electric_motorhttp://en.wikipedia.org/wiki/Lead%E2%80%93acid_batteryhttp://en.wikipedia.org/wiki/Nickel-cadmium_batteryhttp://en.wikipedia.org/wiki/Nickel-metal_hydride_batteryhttp://en.wikipedia.org/wiki/Lithium-ion_batteryhttp://en.wikipedia.org/wiki/Lithium_iron_phosphate_batteryhttp://en.wikipedia.org/wiki/Lithium_iron_phosphate_batteryhttp://en.wikipedia.org/wiki/Lithium-ion_batteryhttp://en.wikipedia.org/wiki/Nickel-metal_hydride_batteryhttp://en.wikipedia.org/wiki/Nickel-cadmium_batteryhttp://en.wikipedia.org/wiki/Lead%E2%80%93acid_batteryhttp://en.wikipedia.org/wiki/Electric_motorhttp://en.wikipedia.org/wiki/Rechargeable_battery


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1% L&'( A)*( +SLA% ,'&*&/0

They!e "he he#$ie%" o& "he"h!ee 'i"h "he %ho!"e%"o$e!#(( (i&e"i)e* A Le#+ Aci+

b#""e!y 'i(( (#%" #bou" ,--&u(( ch#!.e cyc(e% be&o!e i"/ee+% "o be !ep(#ce+* Thei!o/(y #+$#/"#.e i% "he c""h#" "hey!e !e(#"i$e(yco))o/p(#ce #/+ "he (e#%"e0pe/%i$e "o !ep(#ce*


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Nickel Metal Hyrie !NiMH"

Batteries#

A bi. 1u)p up &!o)SLA b#""e!ie%2 "hey!e)uch lighter #/+h#$e # be""e! o$e!#((

(i&e"i)e* A NiMHb#""e!y 'i(( (#%" #bou"3-- &u(( ch#!.e cyc(e%be&o!e i" /ee+% "o be!ep(#ce+*


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Lit$i%& I'n !Li I'n" (atteries#

The newest technology in batteries. They're prettycomparable to NiMH batteries,

with the exception of these two

differences:Lithium on batteries are alittle bit lighter.

! Lithium on battery will lastabout 800 full charge cycles

before it needs to be replaced. Lithium on batteries are

the most expensive of thethree.


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CONTROLLERS

There are two distinct types of controllers designedto match either a brushed motor or brushless motor.

Controllers for brushless motors !-bikes re


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DESIGN VARIATIONS

A bike eidekick.

!lectric cargo bikes allow the rider to carry large,

heavy items which would be difficult to transportwithout electric power supplementing the humanpower input.

http://en.wikipedia.org/wiki/Cargo_bikehttp://en.wikipedia.org/wiki/File:BLDCBicycleHubMotor.jpghttp://en.wikipedia.org/wiki/Cargo_bike


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!lectric self-balancing unicycles have also been built.

http://en.wikipedia.org/wiki/Self-balancing_unicyclehttp://en.wikipedia.org/wiki/File:Electric_Bicycle_Diagram.jpghttp://en.wikipedia.org/wiki/Self-balancing_unicycle


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Advantages

They are non-polluting vehicles. ?t ree


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Di%#+$#/"#.e%

There are negligible disadvantages of!lectric 1ikes. 8ew of them are

2ow speed3an not travel for distances above&"km.

?nstant charging is not possible.

3an not carry weight more than"kgs.


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ENVIRONMENTAL EFFECT

!-bikes are ero-emissions vehicles, as theyemit no combustion by-products. 7owever, theenvironmental effects of electricity generation

and power distribution and of manufacturingand disposing of (limited life) high storagedensity batteries must be taken into account.!ven with these issues considered, e-bikes willhave significantly lower environmental impact

than conventional automobiles, and aregenerally seen as environmentally desirable inan urban environment.


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CONCLUSION

3hina has e/perienced an e/plosive growth of sales ofnon-assisted e-bikes including scooter type, with annualsales umping from #, units ?n &BBC to over"& million in "C.

Dsers began replacing traditional bicycles andmotorcycles and, in e-bike became an alternative tocommuting by car.E"F 6evertheless, road safety concernscontinue as around ",# e-bike related deaths wereregistered in "4.


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Th#/4 You

E-bike by Shivendra Kumar

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