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Electric bike introduction and main electrical components.

Electric bicycle / electric bikes / motorized bike is one of battery powered transportation tool, its apprearance similar like normal bicycle or motor bike with pedal,chain,it can be also ridden by pedal as bicycle.

Electric bicycle /electric bikes /  motorized bike is one of battery powered transportation tool, its apprearance similar like normal bicycle or motor bike with pedal,chain,it can be also ridden by pedal as bicycle.
 
In china, according to 1999 <General technical requirements for electric bikes>, electric bike is battery powered pedal assisted bicycle. Speed within 20km/h, gross weight should be within 40KGS, it is one kind of non-motor vehicle.
 
Battery Energy
Lead Acid battery, Voltage 36V/48V, battery capacity: 12-20AH
Lithium battery: Li-polymer battery/ LiMn, LiFePO4 battery.36V/48V,10-16AH.
Now lithium battery power is becoming more and more popular because of light weight, clean energy no pollution. And lithium battery technology has become mature.
Controller
Controller is an important component use hall sensor control motor speed, usually with speed change ,undervoltage protection, overcurrent protection functions.
 
Motor
There are mainly two types of motor, DC motor with brush and brushless DC motor. Now the most popular motor apply in electric bike is brushless high speed DC hub motor. Motor power usually from 250W-500W for electric bikes. Different countries have different rules on motor power for electric bicycle.
 
Throttle and speed sensor
There can be 3 modes for electric bicycle, human riding, pure electric power by operating throttle and 1:1 pedal assistance.
 
Charger
General two-stage charging, that is, first constant voltage charging to a certain extent, and then a small current charge full.
 
Brake system
As bicycle and motor bike, there are several brake type for electric bikes, V brake, Drum brake, disc brake.
Brake lever with power cut function when braking.

If you are interested in electric bike business, want to import,distribute, open shop, agent, wholesale, you can start here.
6/19/2012 8:40:13 AM FREY VEHICLE LIMITED Google+

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Electric Bicycle Product Catalog

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