This document outlines a design project for developing a modular wheel for an electric bicycle. It will have a sophisticated power source and embedded control system. The project involves designing a retrofit wheel that integrates a hub motor, battery pack with battery management system, and motor controller onto a single PCB. The motivation is to design a compact system for electrifying bicycles. A literature review is presented covering past e-bike designs and components. The work plan involves designing the motor, controller, battery pack, and integrating them onto a single PCB within the wheel. Design calculations for the required motor power are also shown.

1. Development of a modular wheel with
a sophisticated power source and
embedded control system
Name: Sharanraj K
Reg No: 22MMT1003
Guide: Dr Sakthivel G
Course Name: Design Project
Course Code:
First Review
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2. Contents
 Abstract
 Introduction
 Motivation
 Literature survey
 Literature gap
 Work Plan
 Work done
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3. Abstract
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4. Introduction
• In transportation we have developed quite a lot by the range of
hi-tech vehicles we have; still the importance of bicycle cannot
be neglected.
• Bicycle is popular in all groups because it is easy to handle by
its light weight, and do not cost money to operate as it does not
require fuel to run, still very efficient in small distant traveling.
• Similar to this, e-bike on the other hand is a modified version
of the same. An electronic bicycle (e-bike) is a bicycle that has
an electric drivetrain, involving a motor, a power source, a
motor controller, and a method of speed control.
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5. • In this project, we have designed a retrofit
wheel which has all components (hub motor,
battery pack with battery management system
and controller) and main objective is designing
PCB intergating BMS and controlling circuit of
motor.
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6. Motivation
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7. Literature survey
SL. NO Author and Year of
Publication
Important findings
1 Design and Development of
an Innovative E-Bike.
C. Abagnalea, M. Cardoneb
(2016)
• Idea of the pedelec prototype.
• Two different gearboxes: the first one
is a planetary gearbox and the second
one is a simple bevel gear.
2 Fabrication of E-bike
Mohammed Hassan Khan,
Mohammed Habeeb Ullah
Shareef(2020).
• Design of Sprocket and Chain for
Electric Bike.
• Components used to make E-bike.
3 R&D on Electric Bike.
Yashwant Sharma,Praveen
Banker(2018)
• Model of Springer fork and PIC
controller.
• Power assist system is a combination of
POWER ON DEMAND and PEDAL
ASSIST .
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8. 4
SL.
NO
Author and Year of
Publication
Important findings
4 Design and Fabrication of
Electric Bike.
Deep R Prajapati, Kunjan Shinde
(2017)
• Braking system - spring loaded
friction- shoe mechanism
• Design of shaft and selection of pitch
of sprocket
5 Design, Modeling and
Simulation of an Electric
Vehicle
Iqbal Husain and Mohammad S.
Islam, SAE Transactions( 1999)
• The design of an electric vehicle
system using a switched reluctance
motor drive.
• The capability of SRMs in operating
over a wide speed range in the constant
power region.
6 Design and Development of
BLDC controller and its
Implementation on E-Bike
Khan Farhan Ibne Faruque,
Nuzhat Nawshin
• PROTEUS simulator is used to design
the BLDC controller
• Only 10 batteries, the cycle is capable
to run for almost 30 minutes
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9. Literature Gap
• Folding bike .
• High speed bike.
• Design of Integrated PCB for controller and
BMS.
• Future developments with no spokes
and creative concept.
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10. Work Plan
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Charger
BLDC
Motor
350W
Controller
Hall Effect sensor
Wheel
Throttle
Bluetooth Module
Brake
Battery
Battery
Management system

11. Design of Motor
• Required Motor Power: P = m*g*V*sinα
• Vehicle Weight: 15 kg
• Load: 70 kg
• Speed: 40 kmph
• Gradient: 5%
• Power: 346.2 W
• Wheel Diameter: 24 inches
• Torque Required: 15.59 Nm
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