智能充電系統(tǒng)的設計

摘    要
近年來，隨著電子產(chǎn)品向智能化，小型化方向的發(fā)展，充電電源正在向顯示直觀、操作方便等方向發(fā)展。傳統(tǒng)的充電電源雖然使用操作方便，但是一般功能比較單一而且一種充電電源往往只能適用于特定的某些產(chǎn)品，并且輸出電壓電流不穩(wěn)定。本文所設計的智能充電系統(tǒng)，充電電源采用了以Mega16單片機為核心控制器。采用線性恒流恒壓電源作為主充電機構（開關電源備用）。因而本產(chǎn)品具有快充慢充數(shù)字可控、LCD顯示電壓電流及溫度、恒壓恒流自動切換、過熱保護的功能。充電主體部分具有受電網(wǎng)電壓影響小、輸出恒流恒壓精度高、紋波小的特點。軟件部分主要實現(xiàn)電源狀態(tài)、充電模式、溫度保護等。

關鍵詞：充電電源；恒壓恒流；單片機Mega16；數(shù)字控制

Intelligent Charging Power Supply 
ABSTRACT
In recent years, electronic products develop to the intelligent and smart, but the Function of traditional charging power device is more often single and a kind of charging power supply can only be applied to certain products in specific. The charging device this paper designed employs Mega16 as the core controller and linear voltage and current regulator as the main charging part. The device has the following functions: quick and slow charging controlled, output voltage and current test and display with LCD, automatic switch between voltage regulator and current regulator, overheat protection and so on. The main charging part can output precise voltage and current almost not influenced by the grid voltage. The design of software could achieve many functions such as the major power status。 
Keywords: charging device; voltage and current regulator; Mega16; digital control

 
目 錄
引 言 1
第一章 方案論證與比較 2
1.1充電電源主體論證 2
1.2控制電路論證 3
第二章 電路設計與參數(shù)計算 5
2.1系統(tǒng)總體結(jié)構設 5
2.1.1ATMEGA16簡介 5
2.1.2系統(tǒng)設計框圖 6
2.2單元電路設計 7
2.2.1充電電路設計 7
2.2.2鍵盤顯示設計 8
2.2.3電壓、電流檢測設計 9
2.2.4溫度測量及保護電路設計 11
第三章 軟件設計 12
3.1程序設計方法簡介 12
3.2數(shù)控電源程序流程圖 12
第四章 模擬仿真數(shù)據(jù) 14
4.1系統(tǒng)輸入變化電壓仿真數(shù)據(jù) 14
4.2 系統(tǒng)處于恒流狀態(tài)仿真數(shù)據(jù) 14
4.3系統(tǒng)處于恒壓狀態(tài)仿真數(shù)據(jù) 15
第五章 結(jié) 論 16
參考文獻 17
謝 辭 18