摘(zhai)要：本(ben)應用筆(bi)記簡單介紹了鎳(nie)(nie)鎘(NiCd)、鎳(nie)(nie)氫(NiMH)和鋰離子(Li-Ion，Li+)可(ke)充電(dian)(dian)電(dian)(dian)池,討論它們的性能，并(bing)說(shuo)明(ming)在不需要微控(kong)制器的情況下(xia)如何構(gou)建單機結構(gou)，安全、快速地為鎳(nie)(nie)氫和鋰離子電(dian)(dian)池充電(dian)(dian)。

車載充電器摘要：本應用筆(bi)(bi)記簡單(dan)介紹了(le)鎳(nie)(nie)鎘(NiCd)、鎳(nie)(nie)氫(qing)(NiMH)和鋰離子(Li-Ion，Li+)可(ke)充電(dian)(dian)電(dian)(dian)池(chi),討論它們(men)的(de)性(xing)能，并說明在(zai)不需要微控制器的(de)情況下(xia)如何構建(jian)單(dan)機(ji)結構，安全、快速地為鎳(nie)(nie)氫(qing)和鋰離子電(dian)(dian)池(chi)充電(dian)(dian)。概述充電(dian)(dian)電(dian)(dian)池(chi)已經成為當今(jin)電(dian)(dian)子產品的(de)一種標準(zhun)電(dian)(dian)源，特別是便攜(xie)設(she)備：筆(bi)(bi)記本電(dian)(dian)腦、手(shou)(shou)機(ji)、數(shu)碼相機(ji)。盡(jin)管電(dian)(dian)源電(dian)(dian)壓在(zai)不斷降(jiang)低(di)，但可(ke)充電(dian)(dian)電(dian)(dian)池(chi)消耗的(de)絕對功率(lv)仍在(zai)不斷增大。功耗增長的(de)主要原因(yin)是設(she)備功能的(de)增強，例(li)如：數(shu)碼相機(ji)與(yu)手(shou)(shou)機(ji)的(de)功能整

　　概述充電(dian)(dian)電(dian)(dian)池(chi)(chi)已經成為(wei)當(dang)今電(dian)(dian)子產品(pin)的(de)(de)(de)(de)一(yi)種標準(zhun)電(dian)(dian)源，特(te)別是(shi)便(bian)攜(xie)設備：筆記(ji)本(ben)電(dian)(dian)腦、手機(ji)、數碼相機(ji)。盡管電(dian)(dian)源電(dian)(dian)壓在(zai)不(bu)斷降(jiang)低，但可充電(dian)(dian)電(dian)(dian)池(chi)(chi)消耗(hao)的(de)(de)(de)(de)絕對(dui)功率仍在(zai)不(bu)斷增(zeng)(zeng)大。功耗(hao)增(zeng)(zeng)長的(de)(de)(de)(de)主要(yao)(yao)原因(yin)是(shi)設備功能的(de)(de)(de)(de)增(zeng)(zeng)強，例如：數碼相機(ji)與手機(ji)的(de)(de)(de)(de)功能整合，筆記(ji)本(ben)電(dian)(dian)腦更高的(de)(de)(de)(de)運算速度以及大尺寸屏幕(mu)的(de)(de)(de)(de)需求等(deng)等(deng)。便(bian)攜(xie)設備功耗(hao)的(de)(de)(de)(de)增(zeng)(zeng)大使得用可充電(dian)(dian)電(dian)(dian)池(chi)(chi)要(yao)(yao)比(bi)標準(zhun)電(dian)(dian)池(chi)(chi)性(xing)價比(bi)更高。更為(wei)重要(yao)(yao)的(de)(de)(de)(de)是(shi)，可充電(dian)(dian)電(dian)(dian)池(chi)(chi)更有利于(yu)環保。使用充電(dian)(dian)電(dian)(dian)池(chi)(chi)可極大地減少有害(hai)物質的(de)(de)(de)(de)排放、材(cai)料的(de)(de)(de)(de)消耗(hao)、以及生產同等(deng)一(yi)次性(xing)電(dian)(dian)池(chi)(chi)所(suo)需的(de)(de)(de)(de)能源。

　　本文介紹了(le)可充(chong)電(dian)(dian)電(dian)(dian)池的(de)化學成分；同時說明了(le)各種充(chong)電(dian)(dian)電(dian)(dian)池的(de)典(dian)型特征和選擇(ze)電(dian)(dian)池類型時需要重(zhong)點(dian)注意的(de)事(shi)項。另(ling)外還討論了(le)在不使用微控制器或電(dian)(dian)源浪涌的(de)主適配(pei)器的(de)情況下如(ru)何構建(jian)單機(ji)結構，安全(quan)、快速地對鎳氫和鋰離子(zi)充(chong)電(dian)(dian)電(dian)(dian)池進行充(chong)電(dian)(dian)。

　　可充(chong)電電池類型20世紀80年代的便攜設備，如(ru)數字無繩電話、隨(sui)身聽(ting)和(he)(he)電動(dong)剃須刀(dao)等，主(zhu)要由鎳鎘(NiCd)電池供電。到了(le)90年代后期，鎳氫(NiMH)電池和(he)(he)鋰(li)離子(Li-Ion)電池逐漸(jian)進入市場并開始流行。

　　因為價格比鎳氫和(he)鋰離子(zi)電(dian)池(chi)便宜，鎳鎘電(dian)池(chi)在低端應(ying)用中十分普遍。鎳鎘電(dian)池(chi)可提供最高的(de)放電(dian)電(dian)流，適合(he)短時間內需要大功率輸出(chu)的(de)應(ying)用。

　　另一(yi)方(fang)面，鎳(nie)鎘電(dian)(dian)池曾經被所謂的(de)記憶效應困擾(現在的(de)鎳(nie)鎘電(dian)(dian)池很少(shao)考慮(lv)這個因素)，使(shi)電(dian)(dian)池容量降低。如果鎳(nie)鎘電(dian)(dian)池在未(wei)完全(quan)放(fang)電(dian)(dian)的(de)情(qing)況下再充(chong)電(dian)(dian)，一(yi)些活性物質會累積并且開始結晶(jing)(在陽(yang)極(ji)有100μm的(de)鎘累積層(ceng))，通(tong)過(guo)化學(xue)反應這層(ceng)物質會自行消失(一(yi)塊(kuai)全(quan)新電(dian)(dian)池的(de)陽(yang)極(ji)大約有1微米厚度的(de)鎘結晶(jing))。

　　出現記(ji)憶效(xiao)應會(hui)(hui)導致(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)容(rong)量(liang)越來(lai)越小(xiao)，端(duan)電(dian)(dian)(dian)(dian)(dian)(dian)壓越來(lai)越低(di)，使(shi)得電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)到達最低(di)可用端(duan)電(dian)(dian)(dian)(dian)(dian)(dian)壓(關斷點)的(de)時(shi)間比預期的(de)早許多，如圖1所(suo)(suo)示。鎳鎘電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)的(de)另一個缺點是它的(de)活性物質(zhi)中(zhong)含有有毒(du)的(de)鎘(Cd)，早期的(de)鎳鎘電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)在(zai)處(chu)理時(shi)會(hui)(hui)產(chan)生(sheng)和成本問(wen)題(ti)。。所(suo)(suo)以，歐洲法規2000/53/EG在(zai)2005年12月31號(hao)后銷售鎳鎘充電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)。

　　鎳氫電池比鎳鎘電池更環保，但是價格更貴。鎳氫電池的放電電流略小，但受惰性效應的影響。惰性效應是比鎳鎘電池記憶效應稍輕的一種現象。惰性效應是由于鎳的結晶導致的。惰性效應和記憶效應一樣，導致無法完全使用可充電電池的全部容量，但都可以通過使用帶有放電功能的充電器來避免。

　　圖(tu)1.鎳(nie)鎘(ge)電池的(de)記憶效(xiao)應與鎳(nie)氫電池的(de)惰性效(xiao)應之(zhi)間的(de)比(bi)較

　　鋰電(dian)子可充電(dian)電(dian)池價格最高，但具有足(zu)夠(gou)高的能(neng)量密(mi)度，因而(er)可以在給定(ding)尺寸下(xia)提供更優性能(neng)，更適合小(xiao)尺寸、高集成度的便攜(xie)設備。

　　表(biao)1給出了各種類型電池(chi)的主要特性。

　　表1.各(ge)種類型充(chong)電電池概述

　　MaximumDischargeCurrent>5C<3C<2C

　　室溫下。

　　C=電池容量。

　　單機鎳氫電池快速充電器雖然很(hen)多人更偏(pian)愛鋰離子電(dian)池(chi)(chi)，鎳氫電(dian)池(chi)(chi)的使用依然很(hen)流行。因為鎳氫電(dian)池(chi)(chi)比(bi)鋰離子電(dian)池(chi)(chi)便宜很(hen)多，所(suo)以(yi)在MP3播放器、閃(shan)光(guang)燈配件(jian)、車燈等設備中經常能看到標準的AA和AAA鎳氫電(dian)池(chi)(chi)。

　　一塊(kuai)可充(chong)(chong)(chong)(chong)電(dian)(dian)鎳(nie)(nie)氫(qing)電(dian)(dian)池(chi)的(de)溫(wen)度和(he)端電(dian)(dian)壓隨(sui)著電(dian)(dian)池(chi)的(de)充(chong)(chong)(chong)(chong)電(dian)(dian)逐步上(shang)升，在電(dian)(dian)池(chi)完全充(chong)(chong)(chong)(chong)滿后開始下(xia)降(圖2)。所(suo)以，鎳(nie)(nie)氫(qing)電(dian)(dian)池(chi)充(chong)(chong)(chong)(chong)電(dian)(dian)器的(de)主要任務是檢測(ce)到這個突變點并中斷充(chong)(chong)(chong)(chong)電(dian)(dian)，或(huo)者(zhe)從快速充(chong)(chong)(chong)(chong)電(dian)(dian)切(qie)換到涓流充(chong)(chong)(chong)(chong)電(dian)(dian)。另(ling)外，在充(chong)(chong)(chong)(chong)電(dian)(dian)過程中對(dui)溫(wen)度和(he)電(dian)(dian)壓進行連續可以提供系統的(de)安全性。

　　圖2.這(zhe)些曲線顯示了NiMH充(chong)電(dian)(dian)電(dian)(dian)池充(chong)電(dian)(dian)過程(cheng)中典型的電(dian)(dian)壓(頂部(bu))和溫度(底部(bu))隨時間的變化

　　DS2711/DS2712充電器具備上述功(gong)能(neng)。另外，它們可以(yi)單機(ji)工作，不需(xu)要微(wei)控(kong)制器或微(wei)處理器。該系列產品(pin)是(shi)專(zhuan)門為(wei)單節AA或AAA可充(chong)電電池設計的，同時也適用于或并聯的兩節電池。DS2711采用線(xian)性控(kong)制結(jie)構，DS2712采用開關控(kong)制結(jie)構。為(wei)了最大限(xian)度地延長(chang)工作時間、節約電池能(neng)量，這些充(chong)電器有4種充(chong)電模式(shi)：預(yu)充(chong)電、快速(su)充(chong)電、浮充(chong)和(he)涓流充(chong)電。在浮充(chong)模式(shi)下，電池充(chong)滿后充(chong)電速(su)率被切換(huan)到(dao)一個(ge)比較低的速(su)率(對于DS2711而言是(shi)25%)。

　　簡單(dan)充電(dian)(dian)(dian)機電(dian)(dian)(dian)路(lu)圖除功能外，DS2711/DS2712充電(dian)(dian)(dian)器還帶有內(nei)部計時(shi)器，通過(guo)連接(jie)到TMR引腳(jiao)的外部電(dian)(dian)(dian)阻設(she)(she)定最(zui)大充電(dian)(dian)(dian)時(shi)間(jian)，可(ke)將快速充電(dian)(dian)(dian)時(shi)間(jian)設(she)(she)置(zhi)在0.5到10小時(shi)。浮充時(shi)間(jian)已經設(she)(she)定為最(zui)大充電(dian)(dian)(dian)時(shi)間(jian)的一半(0.25到5小時(shi))。根據所要求的充電(dian)(dian)(dian)時(shi)間(jian)(TAPPROX)，由下(xia)式計算電(dian)(dian)(dian)阻值：

　　R=1000TAPPROX/1.5

　　快(kuai)速(su)(su)充(chong)(chong)電模(mo)式(shi)下，如果超(chao)過最大充(chong)(chong)電時(shi)(shi)間，充(chong)(chong)電器會從快(kuai)速(su)(su)充(chong)(chong)電模(mo)式(shi)切換(huan)到(dao)浮(fu)充(chong)(chong)模(mo)式(shi)，同時(shi)(shi)復(fu)位(wei)計時(shi)(shi)器。計時(shi)(shi)器開始為(wei)浮(fu)充(chong)(chong)過程計時(shi)(shi)，如果達到(dao)預定(ding)的浮(fu)充(chong)(chong)時(shi)(shi)間，充(chong)(chong)電器將從浮(fu)充(chong)(chong)模(mo)式(shi)切換(huan)到(dao)涓流(liu)模(mo)式(shi)(圖3)。

　　圖3.該典型應用電(dian)中，DS2711電(dian)池充電(dian)器為(wei)2個的鎳(nie)氫充電(dian)電(dian)池充電(dian)

　　VP1、VP2用(yong)于電(dian)(dian)(dian)壓(ya)，THM1、THM2配合熱敏電(dian)(dian)(dian)阻用(yong)來(lai)監測電(dian)(dian)(dian)池(chi)(chi)的(de)溫度。TMR(計時器(qi))和(he)RSNS(檢(jian)流電(dian)(dian)(dian)阻)用(yong)于設(she)定充(chong)電(dian)(dian)(dian)時間和(he)充(chong)電(dian)(dian)(dian)電(dian)(dian)(dian)流。DS2711/DS2712的(de)另外一(yi)個特(te)(te)性(xing)是可以檢(jian)測電(dian)(dian)(dian)池(chi)(chi)充(chong)電(dian)(dian)(dian)故障(zhang)和(he)堿(jian)性(xing)原電(dian)(dian)(dian)池(chi)(chi)。如(ru)果發生這些情(qing)況，充(chong)電(dian)(dian)(dian)器(qi)會(hui)(hui)自行關機(ji)。該特(te)(te)性(xing)十分重要，因(yin)為(wei)如(ru)果給堿(jian)性(xing)電(dian)(dian)(dian)池(chi)(chi)充(chong)電(dian)(dian)(dian)會(hui)(hui)造成(cheng)電(dian)(dian)(dian)池(chi)(chi)泄(xie)漏，產(chan)生有害的(de)液體(ti)和(he)/或(huo)氣(qi)體(ti)。有毒氣(qi)體(ti)以及會(hui)(hui)與周(zhou)圍材料起(qi)反應(ying)的(de)液體(ti)通常會(hui)(hui)損壞電(dian)(dian)(dian)和(he)/或(huo)外圍設(she)備。

　　如何檢測堿性電(dian)(dian)(dian)(dian)池(chi)(chi)全新(xin)的(de)鎳氫(qing)AA電(dian)(dian)(dian)(dian)池(chi)(chi)的(de)典型內阻(zu)在30mΩ到(dao)100mΩ，堿性電(dian)(dian)(dian)(dian)池(chi)(chi)的(de)內阻(zu)一般在200mΩ到(dao)300mΩ(根據充電(dian)(dian)(dian)(dian)狀態(tai)，最高可到(dao)700mΩ)，出現故(gu)障的(de)充電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)池(chi)(chi)會有很(hen)高的(de)內阻(zu)。DS2711/DS2712通過檢測到(dao)的(de)電(dian)(dian)(dian)(dian)池(chi)(chi)電(dian)(dian)(dian)(dian)壓(ya)(VP1和(he)VP2)和(he)已設(she)定的(de)充電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)流可以計(ji)算出待充電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)池(chi)(chi)的(de)內阻(zu)。

　　CTST引腳(用(yong)于電(dian)(dian)(dian)池(chi)測(ce)試、設(she)置門限)控制(zhi)電(dian)(dian)(dian)池(chi)內阻的(de)(de)測(ce)量。VCTST是(shi)充電(dian)(dian)(dian)過程中的(de)(de)電(dian)(dian)(dian)池(chi)電(dian)(dian)(dian)壓減去無充電(dian)(dian)(dian)電(dian)(dian)(dian)流(liu)時(shi)的(de)(de)開(kai)電(dian)(dian)(dian)池(chi)電(dian)(dian)(dian)壓(OCV)后的(de)(de)差值(zhi)。這個(ge)值(zhi)等于充電(dian)(dian)(dian)電(dian)(dian)(dian)流(liu)乘(cheng)以電(dian)(dian)(dian)池(chi)內阻的(de)(de)乘(cheng)積。如果(guo)檢(jian)測(ce)引腳(VP1、VP2和VN1)與電(dian)(dian)(dian)池(chi)沒有(you)采用(yong)Kelvin連接，引線電(dian)(dian)(dian)阻也將計(ji)入測(ce)量值(zhi)，影(ying)響VCTST。計(ji)算外(wai)部電(dian)(dian)(dian)阻RCTST的(de)(de)公式為(wei)：

　　RCTST=8000[V2/A]/VCTST,whereVCTST=ICharge×RCELL

　　圖4.圖3中所示充電器的充電流程

　　單(dan)機鋰離(li)子(zi)電(dian)池(chi)快速充(chong)電(dian)器因為不需要檢測電(dian)壓(ya)變(bian)化(hua)率(dV/dt)，鋰離(li)子(zi)電(dian)池(chi)充(chong)電(dian)器比(bi)鎳氫(qing)電(dian)池(chi)簡單(dan)。同時，由于(yu)鋰離(li)子(zi)電(dian)池(chi)對過充(chong)非常，充(chong)電(dian)器需要一個精(jing)確的4.2V±50mV電(dian)源(yuan)恒電(dian)流充(chong)電(dian)。至于(yu)鎳氫(qing)電(dian)池(chi)，充(chong)電(dian)器不僅(jin)需要電(dian)壓(ya)監測，還需要其它功(gong)能(溫度、計時等)。

　　單機鋰離子電池充電器MAX8601內置所謂的VBATT可控電壓源，它可以在+25°C提供4.2V±0.021V，或在40°C

　　圖(tu)(tu)5.MAX8601鋰離子電池單(dan)機充(chong)電器(qi)的(de)典型(xing)應用(yong)電圖(tu)(tu)

　　MAX8601充(chong)電(dian)(dian)器的主要優點(dian)是可以(yi)(yi)通(tong)過(guo)外部(bu)適(shi)配器或USB端(duan)(duan)口給電(dian)(dian)池充(chong)電(dian)(dian)(圖6)。USB端(duan)(duan)口根據USEL引腳的設置可以(yi)(yi)提供(gong)100mA、500mA電(dian)(dian)流(典型USB輸出電(dian)(dian)流)。該芯片會自動選擇外部(bu)電(dian)(dian)源(yuan)(yuan)(主適(shi)配器或USB)。如果兩個電(dian)(dian)源(yuan)(yuan)同時存在，它會選擇主適(shi)配器進行充(chong)電(dian)(dian)。任何一個電(dian)(dian)源(yuan)(yuan)都必須能夠提供(gong)最(zui)小4.5V的電(dian)(dian)壓(ya)。通(tong)過(guo)USB端(duan)(duan)口充(chong)電(dian)(dian)可以(yi)(yi)降低外部(bu)電(dian)(dian)源(yuan)(yuan)模塊的成本，電(dian)(dian)源(yuan)(yuan)模塊通(tong)常體積較(jiao)大且效率較(jiao)低。

　　MAX8601具有(you)低(di)電(dian)(dian)(dian)(dian)(dian)池電(dian)(dian)(dian)(dian)(dian)壓預充(chong)、限壓/限流快速充(chong)電(dian)(dian)(dian)(dian)(dian)和(he)(he)浮充(chong)模式等控(kong)制算法，優化了鋰離子電(dian)(dian)(dian)(dian)(dian)池充(chong)電(dian)(dian)(dian)(dian)(dian)。器(qi)件(jian)還有(you)上電(dian)(dian)(dian)(dian)(dian)復位以(yi)及(ji)電(dian)(dian)(dian)(dian)(dian)池過(guo)壓、高溫(wen)/低(di)溫(wen)檢測和(he)(he)充(chong)電(dian)(dian)(dian)(dian)(dian)時間的連續監測功能。充(chong)電(dian)(dian)(dian)(dian)(dian)過(guo)程(cheng)中出(chu)現過(guo)壓、高溫(wen)或低(di)溫(wen)會造成充(chong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)池的永久(jiu)損壞(huai)，降低(di)電(dian)(dian)(dian)(dian)(dian)池容量和(he)(he)使(shi)用時間，甚(shen)至使(shi)電(dian)(dian)(dian)(dian)(dian)池報廢。最壞(huai)的情況下，會造成電(dian)(dian)(dian)(dian)(dian)池泄漏或爆炸。MAX8601確(que)保充(chong)電(dian)(dian)(dian)(dian)(dian)過(guo)程(cheng)中不會出(chu)現上述(shu)危害，從而延長了電(dian)(dian)(dian)(dian)(dian)池使(shi)用時間，消(xiao)除了潛在的情況。

　　圖(tu)6.圖(tu)5中充(chong)電(dian)器的(de)充(chong)電(dian)流程圖(tu)

　　結(jie)論DS2711/DS2712和MAX8601都是單(dan)機(ji)充電(dian)器(qi)，它(ta)們(men)具有(you)多(duo)種功(gong)能(電(dian)壓、功(gong)率、溫(wen)度、計時等(deng))，既不需(xu)要微控制器(qi)，也不需(xu)要電(dian)源(yuan)浪涌，而且提供清晰(xi)、簡單(dan)的外部切換。

　　常見問題及解答

　　什么場(chang)合不適合使用(yong)可再充電電池？

　　答：不要(yao)在諸(zhu)如遙控(kong)和(he)煙霧報警等應用中使用充電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)池。因(yin)為(wei)這些(xie)應用的電(dian)(dian)(dian)(dian)(dian)源要(yao)求比(bi)較低，而(er)且設備(bei)不經(jing)常(chang)使用。可(ke)再充電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)池比(bi)普通(tong)電(dian)(dian)(dian)(dian)(dian)池具有更高的自放電(dian)(dian)(dian)(dian)(dian)率。譬如，鎳氫電(dian)(dian)(dian)(dian)(dian)池每(mei)天(tian)損失1%的電(dian)(dian)(dian)(dian)(dian)量(liang)。因(yin)而(er)它(ta)的工作(zuo)時(shi)間(jian)不太(tai)長(chang)。

　　能否(fou)給一次性電池(chi)(chi)(如堿性電池(chi)(chi))充電？

　　答：不(bu)能給(gei)堿性電(dian)池(chi)充電(dian)。堿性電(dian)池(chi)的化學成(cheng)分及構造不(bu)適合進行充電(dian)，入(ru)的能量會發熱，隨(sui)著內部(bu)溫度(du)的上升(sheng)，電(dian)池(chi)通常(chang)會出現泄漏現象，有(you)時可能會爆(bao)炸。電(dian)池(chi)內部(bu)的有(you)毒物質對(dui)的影響很大。

　　為什么(me)監測充(chong)電電池(chi)的溫度十(shi)分重(zhong)要？

　　答(da)：盡管充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)池(chi)的(de)化學成分及構造(zao)適合進(jin)行充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)，但對電(dian)(dian)(dian)(dian)(dian)池(chi)允許的(de)電(dian)(dian)(dian)(dian)(dian)量及充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)速率有(you)所。短時間(jian)內(nei)充(chong)(chong)入過(guo)多電(dian)(dian)(dian)(dian)(dian)量會使內(nei)部(bu)溫度升高，同堿性電(dian)(dian)(dian)(dian)(dian)池(chi)一(yi)樣(yang)，可能造(zao)成電(dian)(dian)(dian)(dian)(dian)池(chi)泄漏甚至爆炸。一(yi)旦充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)池(chi)充(chong)(chong)滿電(dian)(dian)(dian)(dian)(dian)，額外的(de)電(dian)(dian)(dian)(dian)(dian)荷會使電(dian)(dian)(dian)(dian)(dian)池(chi)發(fa)熱。如果不對溫度進(jin)行監測(ce)，并(bing)降低充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)速率或停止充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)，可能會對產生同樣(yang)的(de)危害。這(zhe)就(jiu)是(shi)DS2711/DS2712/MAX8601在(zai)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)過(guo)程中監測(ce)諸多參數(shu)的(de)原(yuan)因所在(zai)，這(zhe)樣(yang)將確(que)保較(jiao)長的(de)電(dian)(dian)(dian)(dian)(dian)池(chi)使用(yong)時間(jian)以及安(an)全(quan)的(de)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)過(guo)程。