摘要随着科学技术的进步，各种便携式电子产品不断涌现，对充电电池的需求不断加大，而锂离子电池作为一款能量大、寿命长、可循环使用的蓄电池受到了人们的青睐。与其它类型的充电电池相比，锂离子电池的性价比更高，在市场上其具有很高的竞争性。38508
本文详细介绍了公共场所用投币式充电器的设计。在本款充电器的设计中使用了深圳宏晶公司生产的STC89C52单片机作为主芯片，CN3052A作为充电管理芯片。在设计时可以分模块进行设计，其可以分为单片机最小系统、直流稳压电源电路、充电电路、投币控制电路以及数码管显示电路五个模块。充电时间由投币数量决定，数码管显示电路可以显示投币数目、充电时间、充电状态等信息；单片机最小系统负责各部分电路信号的整合、处理；充电电路是本设计的核心部分，负责在充电过程中对充电状态进行监控及管理。本次设计主要进行了硬件电路的设计、软件流程图的设计以及软件程序编写，整个设计还有待完善。
毕业论文关键词：公共场所充电器投币式锂离子电池STC89C52
 ABSTRACT
With the progress of science and technology, all kinds of portable electronic products continue to emerge, to charge the battery demand will continue to increase, and lithium ion battery as a high energy, long service life and can be recycled batteries by people of all ages.Compared with other types of rechargeable batteries, lithium ion battery has a higher ratio of performance to the market, and it has a high competition in the market..
This paper introduces the design of public coin charger. In the design of the charger using the Shenzhen Hong Jing Company production of STC89C52 microcontroller as the main chip, the cn3052a as charging management chip. In the design can be a sub module design,DC regulated power supply circuit, a charging circuit, coin control circuit and digital display circuit module. Charging time is determined by the number of coin, digital tube display circuit can display slot number, charging time, charging state information; the smallest single-chip system is responsible for the integration of the various parts of the circuit signal, processing; charging circuit is the core part of the design, is responsible for in the charging process of the charging state of monitoring and management.This design mainly carries on the software design and the simulation, the entire design still needs to consummate.
Keywords: publicplacescoinchargerlithium ion batterySTC89C52
目录
摘要    I
ABSTRACT    II
1  引言    1
1.1 背景和意义    1
1.2 充电器的现状    1
1.3 充电电池    2
1.3.1 充电电池介绍    2
1.3.2 锂离子电池的充电特性    3
1.4 充电方法的分析    3
1.4.1 充电速度    3
1.4.2 常用的充电方式    4
1.5 投币方式分析    6
1.6 本文的主要任务及结构    7
2  系统设计方案    8
2.1 总体方案    8
2.2 单片机的选择    9
2.2.1STC89C52的简介    9
2.2.2 STC89C52的主要特性    9
2.3 充电芯片的选择    10
2.4 集成稳压器    11
2.5 数码管显示效果    12
3  硬件电路的设计    14
3.1 硬件系统框图    14
3.2 单片机最小系统    15
3.3 直流稳压电源电路    17
3.4 充电电路    17
3.5 投币电路    21
3.6 数码管显示电路    21 STC89C52单片机投币式充电器的设计+电路图+主程序:http://www.youerw.com/zidonghua/lunwen_37506.html