Engineering | Design And Construction Of An Intelligent 250 Volts Battery Charger With Micro P...

Design And Construction Of An Intelligent 250 Volts Battery Charger With Micro Processor Using Seven Segment Display

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Design And Construction Of An Intelligent 250 Volts Battery Charger With Micro Processor Using Seven Segment Display

 

TABLE OF CONTENTS

Title page                                             i

Certification page                                      ii

Dedication                                                 iii

Acknowledgement                                      iv

Abstract                                                    v

Table of content                                         vi-vii

CHAPTER ONE

Introduction                                             1

What is Battery Charger                             1

What is an Intelligent Battery Charger          1

Other Types of Battery Charger                   2-3

CHAPTER TWO

Literature Review                                      4-5

CHAPTER THREE

Component     Description                          6

Micro Controller                                        6-14

Resistor                                                   14-16

Transistor                                                16

Seven Segment Display                             17-18

Capacitor                                                        18-20

Transformer                                             21

Diode                                                      21-22

CHAPTER FOUR

Principle of Operation                                23-27

Circuit Diagram                                         28

Component List                                        29

CHAPTER FIVE

Conclusion                                               30

Recommendations                                    31

References                                               32

CHAPTER ONE.

INTRODUCTION

WHAT IS A BATTERY CHARGER: A battery charger is a device used to put energy into a secondary cell or rechargeable battery. By forcing on electric current through it.

The charge current depends upon the technology and capacity of the battery being charged. For example, the current that should be applied to recharge a 12v car battery will be very different from the current for a mobile phone battery.

WHAT IS AN INTELLIGENT BATTERY CHARGER: This is a battery charger whose output current depends upon the battery’s state. An intelligent charger may monitor  the battery’s voltage, temperature and/ or time under charge to determine the optimum charge current at that instant. Charging is terminated when a combination of the voltage, temperature and/or time indicates that the battery is fully charged.

OTHER TYPE OF BATTERY CHARGERS

1.   SIMPLE  BATTERY CHARGER: A simple charger works by connecting a constant dc power source to the battery being charged. A simple charger does not alter its output based on time or the charge on the battery. This simplicity means that a simple charger is inexpensive but there is a trade off in quality.

2.   TRICKLE BATTERY CHARGER:  A trickle charger is a kind of simple charger that charges the battery slowly, at the self-discharge rate. A trickle charger is the slowest kind of battery charger.

3.   TIMER-BASED BATTERY CHARGER: The output of timer charger is terminated after a predetermined time. Timer chargers were the most common type for high-capacity Ni-Cd cells in the late 1990s

4.   FAST BATTERY CHARGER: fast chargers make use of control circuitry in the batteries being charged to rapidly charge the batteries without damaging the cells element. Most such chargers have a cooling fan to help keep the temperature of the cells under control.

5.   PULSE BATTERY CHARGER: some charger use pulse technology in       which a pulse is fed to the battery. This DC pulse has a strictly controlled rise time, pulse width, pulse repetitive rate (frequency) and amplitude. This technology is used to work with any size, voltage, capacity or chemistry of batteries including automotive and valve-regulated batteries. .

6.   INDUCTIVE BATTERY CHARGER: Inductive battery chargers use electromagnetic induction to charge batteries. A charging station sends electromagnetic energy through inductive coupling to an electrical device which stores the energy in the batteries

7.      USB-BASED BATTERY CHARGER: Since the universal serial bus specification provides for a five-volt power supply, it is possible to use a USB cable as a power source for recharging batteries. 

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