摘要随着当今社会科学技术的发展，二次电源的市场迅速拓展。而锂离子电池以其高效、无污染、噪声小等优点成为电动汽车、便携设备等行业的一个重要研究领域。而锂离子电池的使用寿命和容量受充电电路的影响较大，故一个性能优异的充电器显得尤为重要。67653

本文主要介绍了锂离子电池的工作原理、应用和发展以及几种充电原理和方法。运用一种电池模型,搭建了恒流、恒压、恒流-恒压三种充电电路。通过Multisim软件进行了几种充电电路的仿真研究，并通过示波器观察电流、电压变化曲线，并与理论曲线相比较。这样更加透彻的了解了锂电池的充电过程,直观地反映了各种充电方法的优缺点，为更加优异的充电方法提供了思路。

毕业论文关键词  锂电池 恒流/恒压 充电器 Multisim

毕业设计说明书（论文）外文摘要

Title    Study of constant voltage / constant current charging technology for battery                              

Abstract 

In today's society with the development of science and technology, the market of secondary power expands rapidly. The lithium-ion battery become an important research area of the electric car, portable equipment and other industries due to its advantages of high efficiency, no pollution, little noise. And the service life of the lithium-ion battery and capacity are greatly influenced by the charging circuit，so a excellent charger is of great importance.

This paper mainly introduces the working principle, application and development of the lithium ion battery as well as the charging principle and methods.We set up three models of charging circuit,constant current constant voltage and constant current-constant voltage included,and have a research of the charging circuits with the help of Multisim.By comparing the current, voltage curve with the theoretical curve,we can have a thoroughly understanding of the charging process of the lithium ion battery and see the advantages and disadvantages of various charging methods.This provides a way for better charging methods.

Keywords  The lithium-ion battery  Constant current-constant voltage  Charger  Multisim

目   次  

1引言 1

1.1背景 1

1.2结构安排 2

2 锂电池简介和发展 3

2.1锂电池介绍 3

2.2锂电池的应用 7

2.3锂电池的市场和生产状况 7

2.4发展趋势 7

3充电原理和方法 9

3.1理论基础 9

3.2充电方法 10

3.3均衡充电 13

4 充电器件及电路 16

4.1充电电池模型 16

4.2器件LM317介绍 17

4.3充电保护 20

4.4变压器整流直流电源的产生 21

5 仿真及结果 23

5.1简单稳压充电 23

5.2恒流充电 24

5.3恒流恒压充电 25