Electric Bike Buyer's Guide page 5

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Various features available in present electric bikes are as follows

As already discussed, electric bike drive system is power electronic based and embedded based control. Due to this, this technology got the advantage of implementation of various value adding features. This story is true for electric bikes from any country i.e. India, China, Taiwan or any other. we will discuss these features in brief

  1. Current Limit: As Electric bike is powered by battery, the power drawn from the battery depends on the load and hence there should be control over the current drawn from the battery otherwise, battery & motor life may effect. This can be easily implemented by power electronic based BLDC Controller using some hardware and software implementations. This feature allows only fixed current and limits the maximum current to the programmed value. Bike would continue to run in this condition.
  2. Over Current cut-off: As battery current drawn is out of our control and is limited by load, road conditions, we can set a maximum current point, where the drive system will shut down automatically and only can start with ignition key restarted.
  3. Low/High speed set: This features is good parental feature which will set the bike to run at two different speeds. This allows the costumer to fix the speed based on their urgency. Low speed set will give more drive range but of course kills your time.
  4. Cruise control: This feature being used in aero planes & luxury cars but now available only in electric bikes due to its easy implementation with its technology. Using Cruise control feature the vehicle can be continuously run at a desired speed and throttle can be released.
  5. Brake Electrical Cut-off: We know that brake will be stopping the motor mechanically but here in electric bikes we can cut-off the motor electrically and mechanically break it. This feature helps the system from high inrush current during braking. There are two type of braking –
    1. Normal electric brake – cutoff the motor but motor runs due to inertia when brake applied.
    2. Electromagnetic brake – cutoff the motor & motor suddenly stops when brake applied.
  6. Battery Charging Bike won’t start: This feature will not allow the bike to start when the bike is connected to a charger and is charging. This is a fool proof feature for the riders.
  7. Side stand indicator: As these bikes normally have no gears, just a rise in the accelerator will start the bike. If the bike is standing with side stand, it is accident prone situation and hence, when the bike started when side stand is on, there will be a buzzer which will remind the rider to take off the stand.
  8. Bike stop after idle for some time after ignition key on: This feature is very important in electric bikes. We know electric bikes make no noise and hence costumer once ignition key is on and kept idle for some time might forget that he has started the bike. Hence this feature will cut of the system if it is idle for some specified time after ignition key on. Costumer has to restart the bike to ride.
  9. Battery meter: Battery level is displayed using an analog meter on the handle bar which will enable the rider to plan his journey.
  10. Speedometer: For applications of e-bikes where the accuracy of e-bike and km traveled is not necessary, we need not use odometer. Usage of odometer will increase the cost. Hence the BLDC Controller can be programmed to give the required speed pulse which will show the speed in km/hr on analog scale of speedometer.


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