【正文】 V ARADL MOV PADA 電源電壓是否正常 SUB A5V4 JBC R3C JMP PRENORMAL 系統(tǒng)判斷電源電壓和環(huán)境溫度是否正常如果正常循環(huán)執(zhí)行預(yù)沖電 階段的操作如果不正常系統(tǒng)進(jìn)入 PRENORMAL 子塊操作 PABNORMALP BS FLAGFABNORMALP JMP REPC PABNORMALT BS FLAGFABNORMALT JMP REPC 接下來(lái)系統(tǒng)將做進(jìn)一步檢測(cè)處理如果滿足條件將退出預(yù)充電階段并 給出充電的綠色 LED 指示如果不滿足條件將發(fā)出錯(cuò)誤警告紅色 LED 指示 PRENORMAL BC FLAGFABNORMALP 清異常標(biāo)志 MOV ATAD1 電壓正常 MOV R4A CALL AVERAGE 計(jì)算溫度采 樣平均值 MOV ARADL MOV R4A CALL AVERAGE 計(jì)算溫度采 樣平均值 MOV ARADL MOV T_ADA SUB A43C 8743c T 186 _0c 溫 度是否位于正 常范圍 JBC R3C JMP PABNORMALT 溫度高于 43 度 MOV AT_AD SUB A_0C JBS R3C JMP PABNORMALT 小于 186即大于 0度則返回 下面做電池電壓的判斷 BC FLAGFABNORMALT MOV AU_AD1 MOV R4A CALL AVERAGE 計(jì)算電池電 壓平均值 MOV RR_ADL MOV U_ADA 同 42V 進(jìn)行比較 SUB A_4V2 JBS R3C RET 大于 42V 則表示充好退出 這是預(yù)充電階段的最后一部分它實(shí)現(xiàn)了紅色綠色 LED 指示燈的功能 SUB A_5V4 JBC R3C JMP PRE_NORMAL 系統(tǒng)判斷電源電壓和環(huán)境溫度是否正常如果正常循環(huán)執(zhí)行預(yù)充電階段的操作如果不正常系統(tǒng)進(jìn)入 PRE_NORMAL 子塊操作 PABNORMALP BS FLAGFABNORMALP JMP RE_PC PABNORMALT BS FLAGFABNORMALT JMP RE_PC 接下來(lái)系統(tǒng)將做進(jìn) 一步檢測(cè)處理如果滿足條件將退出預(yù)充電階段并給出充電正常的綠色 LED 知識(shí)如果不滿足條件將發(fā)出錯(cuò)誤警告紅色 LED 指示 PRE_NORMAL BC FLAGFABNORMALP 清異常標(biāo) 志 MOV AT_AD1 電壓正常 MOV R4A CALL AVERAGE 計(jì)算溫度 采樣平均值 MOV AR_ADL MOV T_ADA SUB A_43C 87_43c t 186 _0c 溫度是否位于正常范圍 JBC R3C JMP PABNORMALT 溫度高于 43 度 MOV AT_AD SUB A_0C JBS R3C JMP PABNORMALT 小于 186 即大于 0 度則返回 下面做電池電壓的判斷 BC PLAGFABNORMALT MOV AU_AD1 MOV R4A CALL AVERAGE 計(jì)算電池電壓平均值 MOV AR_ADL MOV U_ADA 同 42V 進(jìn)行比較 SUB A_4V2 JBS R3C RET 大于 42V 則表明充好退出 這是預(yù)充電階段的最后一部分它實(shí)現(xiàn)了紅色綠色 LED 指示燈的功能 PRE_SHOW BS P5RED 。 01V而充電時(shí)間大于 4個(gè)小時(shí) C 階段涓流充電階段 本階段電池電壓維持在 42177。畢業(yè)設(shè)計(jì)（論文）鋰離子電池充電器設(shè)計(jì) 摘 要 隨著移動(dòng)電話筆記本電腦個(gè)人數(shù)字助理 PDA 攝錄像機(jī)及小體積高功率電器的廣泛使用鋰離子電池被廣泛地作供電電源鋰電池具有工作電壓高能量密度大重量輕壽命長(zhǎng)及環(huán)保性佳等優(yōu)點(diǎn)目前鋰離子電池已大量應(yīng)用于可攜帶式電子產(chǎn)品上未來(lái)更可作為電動(dòng)工具交通工具等的動(dòng)力來(lái)源其未來(lái)需求及發(fā)展前景是相當(dāng)廣闊 鋰離子電池在各個(gè)領(lǐng)域的廣泛應(yīng)用推動(dòng)了對(duì)鋰離子電池充電器及充電管理芯片的研究充電管理芯片通常都具有以下特點(diǎn)限流保護(hù)電流短路與反充保護(hù) 線路設(shè)計(jì)自動(dòng)及快速充電充滿電后自動(dòng)關(guān)斷等有些還具有 LED 充電狀態(tài)顯示低噪聲模擬微電腦控制系統(tǒng)等特點(diǎn)鋰離子的特點(diǎn)使得其對(duì)充電管理芯片的要求比較苛刻充電方式通常采用恒流恒壓方式 本文所設(shè)計(jì)系統(tǒng)以 EM78P458 單片機(jī)為控制核心電路按照實(shí)際電路功能可劃分為系統(tǒng)指示燈電路電源電壓與環(huán)境溫度采用電路精確基準(zhǔn)電壓產(chǎn)生電路和開(kāi)關(guān)控制電路具體分析了鋰離子電池的充電原理與充電方法硬件電路設(shè)計(jì)軟件程序設(shè)計(jì)等實(shí)現(xiàn)了電池充電 LED 指示保護(hù)機(jī)制及異常處理等功能 關(guān)鍵詞鋰離子電池 EM78P458 充電器 硬件電路 軟件設(shè)計(jì) Abstract With mobile phones notebook puters personal digital assistant PDA video recorders and small perturbation high volume of the widespread use of electrical power lithiumion batteries are widely for power supply Lithium battery voltage with high energy density light weight long life and environmental advantages of good The current lithiumion battery has a large number can be used in portable electronic products the future will be as electric tools such as transport of power sources its future needs and development prospects are very broad Lithiumion batteries in a wide range of applications in various fields promote the lithiumion rechargeable battery charger and management chip research Charging management chips generally have the following characteristics current limit protection and countercharge current shortcircuit protection circuit design automatic and quick and full of power after the automatic shutdown and so on Some also have LED charging status low noise analog microputer control system and so on The characteristics of lithiumion rechargeable management makes its chips on the request of relatively harsh usually charging a constant current constant pressure methods This paper designed to EM78P458 SCM system for the control of the core the circuit functions in accordance with the actual circuit can be divided into light circuit system power supply voltage and temperature using circuit precision reference voltage circuit and a switch control circuits Specific analysis of the lithiumion rechargeable battery with the principle of charging method hardware design software design To achieve a batt