摘要(yao)(yao)：本應用筆記(ji)簡單介(jie)紹了鎳(nie)鎘(NiCd)、鎳(nie)氫(qing)(NiMH)和鋰(li)離子(Li-Ion，Li+)可充(chong)電電池(chi)(chi),討論它(ta)們(men)的性能，并說明在不需要(yao)(yao)微控制器(qi)的情況下如何構建單機結構，安全、快速地(di)為(wei)鎳(nie)氫(qing)和鋰(li)離子電池(chi)(chi)充(chong)電。

車載充電器摘要(yao)：本應用筆記簡(jian)單(dan)介紹了鎳(nie)鎘(NiCd)、鎳(nie)氫(qing)(NiMH)和(he)鋰離(li)(li)子(Li-Ion，Li+)可充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)池,討(tao)論它們的(de)(de)性能(neng)，并說明在(zai)(zai)不需(xu)要(yao)微(wei)控(kong)制器的(de)(de)情況下如何(he)構建單(dan)機(ji)結(jie)構，安(an)全、快速地為鎳(nie)氫(qing)和(he)鋰離(li)(li)子電(dian)(dian)(dian)(dian)(dian)池充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)。概述充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)池已經(jing)成為當今電(dian)(dian)(dian)(dian)(dian)子產品的(de)(de)一種標準(zhun)電(dian)(dian)(dian)(dian)(dian)源，特(te)別是便攜(xie)設(she)備(bei)：筆記本電(dian)(dian)(dian)(dian)(dian)腦、手(shou)機(ji)、數(shu)(shu)碼相(xiang)(xiang)機(ji)。盡管電(dian)(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)(dian)壓(ya)在(zai)(zai)不斷降(jiang)低，但(dan)可充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)池消耗的(de)(de)絕對功(gong)率仍在(zai)(zai)不斷增大。功(gong)耗增長的(de)(de)主要(yao)原因是設(she)備(bei)功(gong)能(neng)的(de)(de)增強(qiang)，例如：數(shu)(shu)碼相(xiang)(xiang)機(ji)與手(shou)機(ji)的(de)(de)功(gong)能(neng)整

　　概述充(chong)(chong)電(dian)電(dian)池已經成為當今(jin)電(dian)子(zi)產品的(de)一種標(biao)(biao)準電(dian)源(yuan)，特別是(shi)(shi)便攜(xie)設備(bei)(bei)：筆記(ji)本電(dian)腦(nao)、手機(ji)(ji)(ji)、數碼(ma)相機(ji)(ji)(ji)。盡管電(dian)源(yuan)電(dian)壓在(zai)不斷(duan)降低，但可充(chong)(chong)電(dian)電(dian)池消(xiao)耗(hao)的(de)絕對功(gong)率仍在(zai)不斷(duan)增(zeng)(zeng)大(da)。功(gong)耗(hao)增(zeng)(zeng)長的(de)主(zhu)要原因(yin)是(shi)(shi)設備(bei)(bei)功(gong)能(neng)的(de)增(zeng)(zeng)強，例(li)如(ru)：數碼(ma)相機(ji)(ji)(ji)與手機(ji)(ji)(ji)的(de)功(gong)能(neng)整合，筆記(ji)本電(dian)腦(nao)更(geng)高的(de)運算速度以及大(da)尺寸屏(ping)幕的(de)需(xu)求(qiu)等(deng)等(deng)。便攜(xie)設備(bei)(bei)功(gong)耗(hao)的(de)增(zeng)(zeng)大(da)使(shi)得(de)用可充(chong)(chong)電(dian)電(dian)池要比標(biao)(biao)準電(dian)池性價比更(geng)高。更(geng)為重(zhong)要的(de)是(shi)(shi)，可充(chong)(chong)電(dian)電(dian)池更(geng)有(you)利于環保。使(shi)用充(chong)(chong)電(dian)電(dian)池可極大(da)地減(jian)少有(you)害物質的(de)排(pai)放、材料的(de)消(xiao)耗(hao)、以及生產同(tong)等(deng)一次性電(dian)池所需(xu)的(de)能(neng)源(yuan)。

　　本文(wen)介紹了(le)可充電(dian)(dian)電(dian)(dian)池的(de)化學成(cheng)分；同時(shi)說明了(le)各種充電(dian)(dian)電(dian)(dian)池的(de)典型特征和選擇電(dian)(dian)池類(lei)型時(shi)需(xu)要重(zhong)點注意的(de)事(shi)項(xiang)。另外還討(tao)論了(le)在(zai)不使用微(wei)控制器或電(dian)(dian)源浪涌(yong)的(de)主適(shi)配器的(de)情況下如何構建(jian)單機結構，安全、快(kuai)速地對鎳氫和鋰離子充電(dian)(dian)電(dian)(dian)池進行充電(dian)(dian)。

　　可充電(dian)電(dian)池類型20世(shi)紀(ji)80年代(dai)的便攜設備(bei)，如數字無繩(sheng)電(dian)話、隨身聽和電(dian)動剃(ti)須刀(dao)等，主要由鎳鎘(NiCd)電(dian)池供電(dian)。到了90年代(dai)后期(qi)，鎳氫(NiMH)電(dian)池和鋰離子(zi)(Li-Ion)電(dian)池逐漸進入(ru)市場并(bing)開始(shi)流行(xing)。

　　因為價格比鎳氫和鋰離子電池便宜，鎳鎘電池在低端應用(yong)中十(shi)分普遍。鎳鎘電池可提(ti)供最高的(de)放(fang)電電流，適合(he)短時(shi)間內(nei)需要大功率(lv)輸出(chu)的(de)應用(yong)。

　　另一(yi)(yi)方(fang)面，鎳(nie)鎘(ge)(ge)電(dian)池曾經被所謂的(de)記憶效應(ying)困擾(現在的(de)鎳(nie)鎘(ge)(ge)電(dian)池很少考慮這個因(yin)素(su))，使電(dian)池容量降低。如果鎳(nie)鎘(ge)(ge)電(dian)池在未完(wan)全放電(dian)的(de)情況下再(zai)充電(dian)，一(yi)(yi)些活性物(wu)質(zhi)會(hui)累積并且開始結(jie)晶(在陽極(ji)有100μm的(de)鎘(ge)(ge)累積層)，通(tong)過化(hua)學反應(ying)這層物(wu)質(zhi)會(hui)自行(xing)消失(一(yi)(yi)塊全新(xin)電(dian)池的(de)陽極(ji)大約(yue)有1微米厚度的(de)鎘(ge)(ge)結(jie)晶)。

　　出現(xian)記(ji)憶(yi)效應會(hui)導致電(dian)(dian)(dian)池(chi)容量越(yue)來越(yue)小，端電(dian)(dian)(dian)壓越(yue)來越(yue)低(di)，使得電(dian)(dian)(dian)池(chi)到達(da)最低(di)可(ke)用端電(dian)(dian)(dian)壓(關斷點(dian))的(de)時(shi)(shi)間比預期的(de)早(zao)許多，如圖1所(suo)示。鎳鎘電(dian)(dian)(dian)池(chi)的(de)另一(yi)個缺點(dian)是它的(de)活(huo)性物質中含有有毒的(de)鎘(Cd)，早(zao)期的(de)鎳鎘電(dian)(dian)(dian)池(chi)在(zai)(zai)處(chu)理時(shi)(shi)會(hui)產(chan)生和成(cheng)本問題。。所(suo)以，歐洲法規(gui)2000/53/EG在(zai)(zai)2005年12月31號后銷售鎳鎘充(chong)電(dian)(dian)(dian)電(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1.鎳(nie)(nie)鎘電池的(de)(de)(de)記憶效應(ying)與鎳(nie)(nie)氫電池的(de)(de)(de)惰性(xing)效應(ying)之間(jian)的(de)(de)(de)比較

　　鋰(li)電(dian)子(zi)可充電(dian)電(dian)池價格最高，但具有足夠高的能量密(mi)度，因而(er)可以在(zai)給定尺(chi)寸(cun)下提供更(geng)優性能，更(geng)適合小尺(chi)寸(cun)、高集成度的便攜設備。

　　表1給(gei)出(chu)了各種類型電池(chi)的主要特性。

　　表1.各種類型充電電池(chi)概(gai)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(ran)(ran)很多人更偏愛鋰離(li)子電(dian)池(chi)，鎳氫(qing)電(dian)池(chi)的使用依然(ran)(ran)很流行(xing)。因為鎳氫(qing)電(dian)池(chi)比(bi)鋰離(li)子電(dian)池(chi)便宜很多，所以在MP3播放器(qi)、閃(shan)光燈配件(jian)、車燈等設備(bei)中(zhong)經常能看(kan)到標準的AA和(he)AAA鎳氫(qing)電(dian)池(chi)。

　　一(yi)塊可充(chong)(chong)電(dian)(dian)鎳氫(qing)電(dian)(dian)池(chi)的(de)溫度(du)和端電(dian)(dian)壓隨著電(dian)(dian)池(chi)的(de)充(chong)(chong)電(dian)(dian)逐步上升(sheng)，在電(dian)(dian)池(chi)完全(quan)(quan)充(chong)(chong)滿后開始下降(圖2)。所以(yi)(yi)，鎳氫(qing)電(dian)(dian)池(chi)充(chong)(chong)電(dian)(dian)器的(de)主要任(ren)務是檢測(ce)到(dao)(dao)這個突變點并中斷充(chong)(chong)電(dian)(dian)，或者從快(kuai)速(su)充(chong)(chong)電(dian)(dian)切換到(dao)(dao)涓流充(chong)(chong)電(dian)(dian)。另外，在充(chong)(chong)電(dian)(dian)過程中對溫度(du)和電(dian)(dian)壓進行連續(xu)可以(yi)(yi)提供系統的(de)安全(quan)(quan)性。

　　圖2.這(zhe)些(xie)曲線顯(xian)示了(le)NiMH充電(dian)電(dian)池充電(dian)過程(cheng)中典(dian)型的電(dian)壓(頂部)和溫度(du)(底部)隨時(shi)間的變化

　　DS2711/DS2712充電器具備上述(shu)功能(neng)。另(ling)外，它們(men)可以單(dan)機工(gong)作(zuo)，不需要微控制(zhi)器(qi)或微處(chu)理器(qi)。該系列產品是專門為單(dan)節AA或AAA可充(chong)電電池(chi)(chi)設計(ji)的(de)(de)，同時(shi)也適用(yong)于或并(bing)聯的(de)(de)兩節電池(chi)(chi)。DS2711采(cai)用(yong)線性控制(zhi)結構，DS2712采(cai)用(yong)開關控制(zhi)結構。為了最大限度地延長工(gong)作(zuo)時(shi)間(jian)、節約電池(chi)(chi)能(neng)量，這些(xie)充(chong)電器(qi)有4種充(chong)電模式(shi)：預充(chong)電、快(kuai)速充(chong)電、浮充(chong)和涓流充(chong)電。在浮充(chong)模式(shi)下，電池(chi)(chi)充(chong)滿后(hou)充(chong)電速率(lv)被(bei)切換到一個比較低(di)的(de)(de)速率(lv)(對(dui)于DS2711而言(yan)是25%)。

　　簡單充(chong)(chong)電(dian)機電(dian)路圖除(chu)功能外，DS2711/DS2712充(chong)(chong)電(dian)器還帶有內部(bu)計時(shi)器，通過(guo)連接(jie)到TMR引腳的外部(bu)電(dian)阻設(she)(she)定最(zui)大充(chong)(chong)電(dian)時(shi)間(jian)(jian)，可將快速(su)充(chong)(chong)電(dian)時(shi)間(jian)(jian)設(she)(she)置在0.5到10小時(shi)。浮(fu)充(chong)(chong)時(shi)間(jian)(jian)已(yi)經(jing)設(she)(she)定為最(zui)大充(chong)(chong)電(dian)時(shi)間(jian)(jian)的一(yi)半(ban)(0.25到5小時(shi))。根據所要求的充(chong)(chong)電(dian)時(shi)間(jian)(jian)(TAPPROX)，由下式計算電(dian)阻值：

　　R=1000TAPPROX/1.5

　　快速充(chong)(chong)(chong)電(dian)模式(shi)下，如(ru)(ru)果(guo)超過最大充(chong)(chong)(chong)電(dian)時(shi)(shi)(shi)間，充(chong)(chong)(chong)電(dian)器會從快速充(chong)(chong)(chong)電(dian)模式(shi)切換(huan)到浮(fu)充(chong)(chong)(chong)模式(shi)，同時(shi)(shi)(shi)復位(wei)計時(shi)(shi)(shi)器。計時(shi)(shi)(shi)器開始為浮(fu)充(chong)(chong)(chong)過程計時(shi)(shi)(shi)，如(ru)(ru)果(guo)達到預定的浮(fu)充(chong)(chong)(chong)時(shi)(shi)(shi)間，充(chong)(chong)(chong)電(dian)器將(jiang)從浮(fu)充(chong)(chong)(chong)模式(shi)切換(huan)到涓流模式(shi)(圖3)。

　　圖3.該典型應用電(dian)中，DS2711電(dian)池(chi)充電(dian)器為2個(ge)的(de)鎳氫(qing)充電(dian)電(dian)池(chi)充電(dian)

　　VP1、VP2用于電(dian)(dian)(dian)壓，THM1、THM2配合熱(re)敏電(dian)(dian)(dian)阻用來監(jian)測(ce)電(dian)(dian)(dian)池的(de)溫度。TMR(計時器)和(he)(he)RSNS(檢流電(dian)(dian)(dian)阻)用于設定充(chong)(chong)電(dian)(dian)(dian)時間(jian)和(he)(he)充(chong)(chong)電(dian)(dian)(dian)電(dian)(dian)(dian)流。DS2711/DS2712的(de)另外(wai)一個特(te)性是可以檢測(ce)電(dian)(dian)(dian)池充(chong)(chong)電(dian)(dian)(dian)故障和(he)(he)堿性原電(dian)(dian)(dian)池。如果發生這些情況，充(chong)(chong)電(dian)(dian)(dian)器會自(zi)行關機。該特(te)性十分重(zhong)要(yao)，因為如果給堿性電(dian)(dian)(dian)池充(chong)(chong)電(dian)(dian)(dian)會造成電(dian)(dian)(dian)池泄漏，產生有害的(de)液體和(he)(he)/或氣(qi)(qi)體。有毒氣(qi)(qi)體以及(ji)會與(yu)周圍材料起反應的(de)液體通(tong)常會損(sun)壞電(dian)(dian)(dian)和(he)(he)/或外(wai)圍設備(bei)。

　　如何檢測(ce)堿(jian)性(xing)電(dian)池(chi)全新的(de)(de)(de)鎳氫(qing)AA電(dian)池(chi)的(de)(de)(de)典型(xing)內(nei)(nei)阻(zu)在(zai)30mΩ到100mΩ，堿(jian)性(xing)電(dian)池(chi)的(de)(de)(de)內(nei)(nei)阻(zu)一般在(zai)200mΩ到300mΩ(根據充(chong)電(dian)狀態，最高(gao)可到700mΩ)，出現故障的(de)(de)(de)充(chong)電(dian)電(dian)池(chi)會(hui)有很(hen)高(gao)的(de)(de)(de)內(nei)(nei)阻(zu)。DS2711/DS2712通過檢測(ce)到的(de)(de)(de)電(dian)池(chi)電(dian)壓(VP1和VP2)和已設定的(de)(de)(de)充(chong)電(dian)電(dian)流(liu)可以計算出待充(chong)電(dian)電(dian)池(chi)的(de)(de)(de)內(nei)(nei)阻(zu)。

　　CTST引(yin)(yin)腳(用(yong)于電(dian)(dian)池測(ce)試、設置(zhi)門限)控制電(dian)(dian)池內阻(zu)的(de)測(ce)量。VCTST是(shi)充電(dian)(dian)過程中的(de)電(dian)(dian)池電(dian)(dian)壓(ya)減去無充電(dian)(dian)電(dian)(dian)流時(shi)的(de)開電(dian)(dian)池電(dian)(dian)壓(ya)(OCV)后的(de)差值(zhi)。這個(ge)值(zhi)等于充電(dian)(dian)電(dian)(dian)流乘(cheng)(cheng)以電(dian)(dian)池內阻(zu)的(de)乘(cheng)(cheng)積。如果檢測(ce)引(yin)(yin)腳(VP1、VP2和VN1)與電(dian)(dian)池沒有采用(yong)Kelvin連接，引(yin)(yin)線電(dian)(dian)阻(zu)也將(jiang)計(ji)(ji)入測(ce)量值(zhi)，影響VCTST。計(ji)(ji)算外部電(dian)(dian)阻(zu)RCTST的(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

　　單機鋰(li)離(li)子(zi)電(dian)(dian)池快速充電(dian)(dian)器(qi)因為不(bu)需(xu)要檢測電(dian)(dian)壓變化(hua)率(dV/dt)，鋰(li)離(li)子(zi)電(dian)(dian)池充電(dian)(dian)器(qi)比鎳(nie)氫電(dian)(dian)池簡單。同(tong)時，由(you)于鋰(li)離(li)子(zi)電(dian)(dian)池對過充非常(chang)，充電(dian)(dian)器(qi)需(xu)要一個精(jing)確(que)的(de)4.2V±50mV電(dian)(dian)源恒電(dian)(dian)流充電(dian)(dian)。至于鎳(nie)氫電(dian)(dian)池，充電(dian)(dian)器(qi)不(bu)僅(jin)需(xu)要電(dian)(dian)壓監(jian)測，還需(xu)要其它功能(neng)(溫(wen)度、計(ji)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5.MAX8601鋰離(li)子(zi)電(dian)(dian)池(chi)單機充電(dian)(dian)器的典型應用(yong)電(dian)(dian)圖

　　MAX8601充電(dian)(dian)(dian)器(qi)的(de)主(zhu)要優點是可以(yi)通(tong)過外(wai)部適配(pei)器(qi)或USB端(duan)口(kou)給電(dian)(dian)(dian)池充電(dian)(dian)(dian)(圖6)。USB端(duan)口(kou)根據USEL引腳(jiao)的(de)設置可以(yi)提供100mA、500mA電(dian)(dian)(dian)流(典型(xing)USB輸出電(dian)(dian)(dian)流)。該芯片會自(zi)動選擇(ze)外(wai)部電(dian)(dian)(dian)源(yuan)(yuan)(主(zhu)適配(pei)器(qi)或USB)。如(ru)果(guo)兩個電(dian)(dian)(dian)源(yuan)(yuan)同(tong)時(shi)存在，它會選擇(ze)主(zhu)適配(pei)器(qi)進行充電(dian)(dian)(dian)。任(ren)何一個電(dian)(dian)(dian)源(yuan)(yuan)都必須(xu)能夠(gou)提供最小(xiao)4.5V的(de)電(dian)(dian)(dian)壓。通(tong)過USB端(duan)口(kou)充電(dian)(dian)(dian)可以(yi)降低外(wai)部電(dian)(dian)(dian)源(yuan)(yuan)模塊的(de)成本，電(dian)(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)(di)電池(chi)(chi)電壓(ya)預充(chong)、限壓(ya)/限流快速充(chong)電和浮充(chong)模式等(deng)控制算法，優化了鋰離子電池(chi)(chi)充(chong)電。器件還有(you)上(shang)電復(fu)位以及(ji)電池(chi)(chi)過壓(ya)、高溫(wen)/低(di)(di)溫(wen)檢測和充(chong)電時(shi)間(jian)(jian)的連續監測功能。充(chong)電過程中出現過壓(ya)、高溫(wen)或低(di)(di)溫(wen)會(hui)造成(cheng)充(chong)電電池(chi)(chi)的永(yong)久(jiu)損壞，降低(di)(di)電池(chi)(chi)容(rong)量和使(shi)用時(shi)間(jian)(jian)，甚至(zhi)使(shi)電池(chi)(chi)報廢。最壞的情況下，會(hui)造成(cheng)電池(chi)(chi)泄漏或爆(bao)炸。MAX8601確保充(chong)電過程中不會(hui)出現上(shang)述(shu)危害，從而延長了電池(chi)(chi)使(shi)用時(shi)間(jian)(jian)，消除了潛在的情況。

　　圖(tu)6.圖(tu)5中充電器的(de)充電流(liu)程圖(tu)

　　結論DS2711/DS2712和MAX8601都是單機(ji)充(chong)電器(qi)(qi)，它(ta)們具有多種功(gong)(gong)能(電壓(ya)、功(gong)(gong)率、溫度、計(ji)時等(deng))，既不(bu)需要(yao)微(wei)控制(zhi)器(qi)(qi)，也不(bu)需要(yao)電源浪涌，而且提供清晰、簡單的外部切換(huan)。

　　常見問題及解答

　　什(shen)么場合不適合使用可(ke)再(zai)充電(dian)電(dian)池？

　　答：不(bu)要(yao)在諸如遙控和煙霧報警等應(ying)用(yong)中使用(yong)充電(dian)(dian)電(dian)(dian)池。因(yin)為這些(xie)應(ying)用(yong)的(de)(de)(de)電(dian)(dian)源要(yao)求比(bi)較低，而且(qie)設備不(bu)經常(chang)使用(yong)。可再充電(dian)(dian)電(dian)(dian)池比(bi)普通(tong)電(dian)(dian)池具有更(geng)高的(de)(de)(de)自放電(dian)(dian)率。譬如，鎳(nie)氫電(dian)(dian)池每天損(sun)失1%的(de)(de)(de)電(dian)(dian)量(liang)。因(yin)而它的(de)(de)(de)工作(zuo)時間不(bu)太長。

　　能否(fou)給一(yi)次性(xing)電(dian)(dian)池(如堿性(xing)電(dian)(dian)池)充電(dian)(dian)？

　　答：不能給(gei)堿(jian)性(xing)電池充電。堿(jian)性(xing)電池的(de)(de)化(hua)學成分及(ji)構造不適合進行充電，入的(de)(de)能量會發熱，隨(sui)著內部溫度的(de)(de)上升，電池通常會出現泄漏現象，有(you)時(shi)可能會爆炸。電池內部的(de)(de)有(you)毒物(wu)質對的(de)(de)影響很大。

　　為什么(me)監(jian)測充(chong)電(dian)電(dian)池的(de)溫度十分重要？

　　答：盡管充(chong)(chong)(chong)電(dian)(dian)(dian)電(dian)(dian)(dian)池(chi)的(de)化學成分及構造(zao)適合進(jin)行充(chong)(chong)(chong)電(dian)(dian)(dian)，但(dan)對電(dian)(dian)(dian)池(chi)允許的(de)電(dian)(dian)(dian)量及充(chong)(chong)(chong)電(dian)(dian)(dian)速率有所。短時(shi)(shi)間(jian)內充(chong)(chong)(chong)入過多電(dian)(dian)(dian)量會(hui)(hui)使內部溫(wen)度升高，同(tong)堿(jian)性(xing)電(dian)(dian)(dian)池(chi)一樣，可(ke)能(neng)造(zao)成電(dian)(dian)(dian)池(chi)泄漏甚(shen)至爆炸。一旦充(chong)(chong)(chong)電(dian)(dian)(dian)電(dian)(dian)(dian)池(chi)充(chong)(chong)(chong)滿電(dian)(dian)(dian)，額外的(de)電(dian)(dian)(dian)荷會(hui)(hui)使電(dian)(dian)(dian)池(chi)發熱。如果不對溫(wen)度進(jin)行監測，并降低充(chong)(chong)(chong)電(dian)(dian)(dian)速率或(huo)停(ting)止充(chong)(chong)(chong)電(dian)(dian)(dian)，可(ke)能(neng)會(hui)(hui)對產生(sheng)同(tong)樣的(de)危害。這(zhe)就是(shi)DS2711/DS2712/MAX8601在充(chong)(chong)(chong)電(dian)(dian)(dian)過程(cheng)中監測諸(zhu)多參數的(de)原因(yin)所在，這(zhe)樣將確保較長(chang)的(de)電(dian)(dian)(dian)池(chi)使用時(shi)(shi)間(jian)以及安全的(de)充(chong)(chong)(chong)電(dian)(dian)(dian)過程(cheng)。