Design And Construction Of A Multicell Charger
The design and construction of a multicell charger involve the creation of a sophisticated charging system capable of simultaneously charging multiple cells, such as batteries or capacitors, efficiently and safely. This endeavor requires meticulous attention to detail in various aspects, including electrical engineering, circuit design, and thermal management. Incorporating features like individual cell monitoring, balancing circuits, and temperature sensing ensures optimal charging performance and extends the lifespan of the cells. Moreover, the charger should be designed with flexibility to accommodate different cell chemistries and capacities, making it versatile for various applications. Implementing advanced charging algorithms and control mechanisms enhances the efficiency and reliability of the charger, while also prioritizing safety by preventing overcharging, over-discharging, and overheating. Overall, the successful design and construction of a multicell charger demand a comprehensive understanding of battery technologies, electrical principles, and system integration, resulting in a robust and dependable charging solution.
ABSTRACT
Multicell charger is a battery charging device, which can safely charge up to two pieces of Ni-Cd cells or Ni-MH cells. The circuit is compact, inexpensive and easy-to-use. The 230V AC mains is down-converted to 12V AC (at 500 mA) by step-down transformer X1, converted into pulsating DC voltage by diodes D1 and D2, and fed to the battery charger terminals via current-limiting resistor R1 and silicon-controlled rectifier SCR1.
SCR1 is at the heart of the charger. Normally, it conducts due to the gate biasing voltage available through resistor R2 and diode D3, and the battery is in charging mode, which is indicated by LED1. Resistor R2 limits the charging current to a safe value. Charging current of this circuit is about 250 mA.
When the battery reaches full charge, SCR2 conducts to pull down the gate of SCR1. This state is indicated by LED2.
TABLE OF CONTENTS
COVER PAGE
TITLE PAGE
APPROVAL PAGE
DEDICATION
ACKNOWELDGEMENT
ABSTRACT
CHAPTER ONE
1.0 INTRODUCTION
1.1 BACKGROUND OF THE PROJECT
- PURPOSE OF THE PROJECT
- AIM OF THE PROJECT
- OBJECTIVE OF THE PROJECT
- PURPOSE OF THE PROJECT
- LIMITATION OF THE PROJECT
- ADVANTAGES OF THE PROJECT
- PROBLEM OF THE PROJECT
- APPLICATION OF THE PROJECT
- RESEARCH QUESTION
- PROJECT ORGANISATION
CHAPTER TWO
LITERATURE REVIEW
- OVERVIEW OF THE STUDY
- REVIEW OF THE RELATED STUDY
CHAPTER THREE
3.0 CONSTRUCTION METHODOLOGY
3.1 BASIC OF THE SYSTEM
3.2 BLOCK DIAGRAM OF THE SYSTEM
3.3 SYSTEM OPERATION
3.4 CIRCUIT DIAGRAM
3.5 CIRCUIT DESCRIPTION
3.6 DESCRIPTION OF COMPONENTS USED
3.7 POWER SUPPLY UNIT
CHAPTER FOUR
4.0 TESTING AND RESULTS
- CONSTRUCTION PROCEDURE AND TESTING
- INSTALLATION OF THE COMPLET DESIGN
- ASSEMBLING OF SECTIONS
- TESTING OF SYSTEM OPERATION
- COST ANALYSIS
CHAPTER FIVE
- CONCLUSION
- RECOMMENDATION
- REFER
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