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手機(jī)鋰電池的智能充電器的設(shè)計(jì)畢業(yè)論文-wenkub

2023-07-13 14:24:28 本頁面
 

【正文】 器硬件設(shè)計(jì)…………………………………………9 設(shè)計(jì)思路分析…………………………………………………………………………9 充電器的智能化要求……………………………………………………………9 充電器智能化實(shí)現(xiàn)………………………………………………………………9 主要器件及其功能……………………………………………………………………9 AT89C51引腳說明………………………………………………………………9 MAX1898引腳說明………………………………………………………………11 6N137引腳說明…………………………………………………………………13 電路原理圖及說明……………………………………………………………………14 單片機(jī)電路………………………………………………………………………14 電壓轉(zhuǎn)換及光藕隔離部分電路…………………………………………………15 充電控制電路……………………………………………………………………15 充電過程………………………………………………………………………………16 預(yù)充………………………………………………………………………………16 快充………………………………………………………………………………16 滿充………………………………………………………………………………16 斷電………………………………………………………………………………17 報(bào)警………………………………………………………………………………17第3章 手機(jī)鋰電池智能充電器軟件設(shè)計(jì)…………………………………………18 實(shí)現(xiàn)功能………………………………………………………………………………18 程序程序圖……………………………………………………………………………18 流程圖一…………………………………………………………………………18 流程圖二…………………………………………………………………………19 流程圖三…………………………………………………………………………19 程序說明………………………………………………………………………………21第4章 系統(tǒng)調(diào)試…………………………………………………………………………24 硬件調(diào)試………………………………………………………………………………24 軟件調(diào)試………………………………………………………………………………24第5章 展望………………………………………………………………………………25 設(shè)計(jì)總結(jié)………………………………………………………………………………25 智能充電器發(fā)展展望…………………………………………………………………25結(jié)束語………………………………………………………………………………………26致謝詞………………………………………………………………………………………27參考文獻(xiàn)……………………………………………………………………………………28附錄一:原理圖……………………………………………………………………………29附錄二:PCB板圖…………………………………………………………………………31附錄三:程序………………………………………………………………………………32第1章 緒論 電池定義電池的應(yīng)用從來沒有像現(xiàn)在這么廣泛。AbstractAs the popularization of the mobile phone, the mobile charger bees the universal electric appliance in family. Although the difference of the brands and models exists, the principle and function of mobile phone and mobile charger are similar, and their circuits are also resemblance. The entire mobile phone charger contains a constant voltage source and some circuits that contains the constant current, limit voltage or limit time. In this thesis, an intelligent charger with the center of MCU and a charge chip MAX1898 is elaborates. The main task of the project is the design and realization of an intelligent phone charger based on the MCU. The emphasis of this thesis contains two parts: first, realization of charge, second, realization of intelligence. There are five chapters posed this thesis. The first part is preface. It elaborates the knowledge about battery, charger and how to charge the battery. It also introduces the task of the project and the purpose of this design.The second part introduces the hardware construction of the designed intelligent mobile telephone charger for Lithium battery. It is one of the emphases of this thesis. It introduces the design’s thought and the main chips, and then, introduces the main construction and all parts of the circuit in detail. It also gives the principle schemes. The third chapter is another emphasis of this thesis. It is software design of mobile phone battery charger. This part introduces the main construction and procedure of the charger in detail. It introduces how to realize the function at last.The forth part introduces how to realize and debug this charge system. It contains the environment of debugging hardware/software, debugging procedure, the problem that will be found in debug and how to deal with it and also gives some result of debugging. The last chapter is to summarize this research and gives the prospect of MCU’s mobile phone intelligent charger.Keywords: intelligent charger。 第四章是系統(tǒng)實(shí)現(xiàn)及調(diào)試部分。第二章是手機(jī)鋰電池智能充電器的硬件結(jié)構(gòu)設(shè)計(jì)部分,該部分是本論文的重點(diǎn)之一。本論文的重點(diǎn)有兩方面內(nèi)容:;。雖然手機(jī)的品牌和型號眾多,各種手充電器形狀和接口不同,但它們的原理和功能基本一樣,電路結(jié)構(gòu)大同小異。所有手機(jī)充電器其實(shí)都是由一個(gè)穩(wěn)定電源加上必要的恒流、限壓、限時(shí)等控制電路構(gòu)成。論文共分為五章。首先介紹了設(shè)計(jì)思路和主要器件,然后詳細(xì)地介紹了手機(jī)鋰電池智能充電器硬件部分的總體結(jié)構(gòu)設(shè)計(jì)和各部分電路的設(shè)計(jì),并給出了相應(yīng)原理圖。這一章主要介紹了軟硬件調(diào)試環(huán)境,調(diào)試過程,調(diào)試中碰到的問題及其解決方法,并給出了系統(tǒng)部分調(diào)試的結(jié)果。 MAX1898。電池正在變得更小、更輕,在單位容積內(nèi)可容納更多能量?! ∫淮涡噪姵?稱之為不可充電或初級電池)從恒定變化電池的化學(xué)反應(yīng)產(chǎn)生電能?! 〕潆娀蚍烹婋娏?安培)通常表示為額定容量的倍數(shù)(稱之為C率)。電池的化學(xué)成分和設(shè)計(jì)一起限定電池所能提供的電流。沒有一個(gè)電池能永久地儲(chǔ)存能量。[1] 電池充電下面六個(gè)圖是不同的充電方式的時(shí)間與電流、電壓關(guān)系示意圖?! ∶看纬潆姴僮鞲鶕?jù)電池的化學(xué)成分依序加電壓和電流。電池充電經(jīng)常遇到的術(shù)語是:用于NiCl 和NiMH電池的恒流(CC)和用于鋰離子和鋰聚合物電池的恒流/恒壓(CC/CV)。因此,他的重要特征是放電容量盡管在大電流放電時(shí)也不出現(xiàn)低下現(xiàn)象()。LIB的主要特點(diǎn)是具有較高的重量能量密度,可在20℃~60℃的溫度范圍內(nèi)工作,無存儲(chǔ)效應(yīng),自放電率低(因而不能大電流放電)。充電主要是通過快速充電來完成。其中,K為常數(shù),C為放電容量。并且當(dāng)以小電流長時(shí)間放電,a值低;而已大電流短時(shí)間放電;a值高。許多優(yōu)秀的快充電設(shè)備采用閉環(huán)控制,因而對蓄電池充電程度和是否充滿電以及對其他現(xiàn)象的檢測技術(shù)也非常重要,如溫升出氣與效率等。1.最高電壓法(Vmax):~,從充電開始,充電器就不斷自動(dòng)檢測電池端電壓,當(dāng)發(fā)現(xiàn)電池端電壓達(dá)到制造者預(yù)先設(shè)定的電壓值后,認(rèn)為電池已被充足電,則停止充電。 2.恒流定時(shí)法(IT):使用這種方法的充電器,預(yù)設(shè)定充電電流在IC以下,人工或自動(dòng)控制充電時(shí)間,以充入的電量為電池容量的120%~140%為限。 這種充電方法的缺點(diǎn)一是耗時(shí),二是不管電池狀態(tài)怎樣(是否還有剩余電量、循環(huán)使用過多少次、電池實(shí)際容量已降低等),不到設(shè)定時(shí)間不停止充電。但在充電器上對不同廠家生產(chǎn)的電
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