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如何把握筆記本電池充電時間

      筆(bi)(bi)記(ji)本(ben)電(dian)池充電(dian)時(shi)間注意,到(dao)底筆(bi)(bi)記(ji)本(ben)要(yao)充電(dian)多少時(shi)間才是正確的(de),在充電(dian)過程只能夠要(yao)把握什(shen)么(me)?時(shi)間多少是否會影(ying)響筆(bi)(bi)記(ji)本(ben)電(dian)池的(de)使用壽(shou)命呢?下(xia)面就這些問題擴展開,看看對于筆(bi)(bi)記(ji)本(ben)中(zhong)最脆弱的(de)筆(bi)(bi)記(ji)本(ben)有什(shen)么(me)可以注意的(de)地方(fang)。

筆記本電池充電時間

謠傳一:新(xin)電池的激(ji)活

新電池應該用循環充放(fang)電的(de)(de)方(fang)式來激活電池的(de)(de)性能。

真相:準(zhun)確(que)地(di)說(shuo)上(shang)述說(shuo)法并不是謠傳。因為有的(de)筆記本(ben)電(dian)池(chi)從生產以后到(dao)客戶(hu)的(de)手(shou)里會有一(yi)定的(de)時(shi)(shi)間(jian)差,短(duan)則一(yi)個月(yue),多則半年。對于時(shi)(shi)間(jian)差較(jiao)長的(de)電(dian)池(chi),其電(dian)極材料(liao)會鈍化(hua),因此(ci)廠商建議初次(ci)使用的(de)電(dian)池(chi)最好(hao)進(jin)行3~5次(ci)完全充放(fang)(fang)(fang)電(dian)過程,以便消除電(dian)極材料(liao)的(de)鈍化(hua),達到(dao)最大容量。但一(yi)般的(de)這里的(de)充放(fang)(fang)(fang)電(dian)不是深(shen)度放(fang)(fang)(fang)電(dian),而是淺放(fang)(fang)(fang)電(dian),這里就有一(yi)個筆記本(ben)電(dian)池(chi)充電(dian)時(shi)(shi)間(jian)的(de)把(ba)握問(wen)題了。

筆記本電池“前三次”充電

謠(yao)傳二:當一(yi)款(kuan)新的(de)電(dian)(dian)池買回來以(yi)后,一(yi)般會說(shuo)最(zui)好進行三(san)次(ci)循(xun)環充(chong)放(fang)電(dian)(dian),而筆記(ji)本電(dian)(dian)池充(chong)電(dian)(dian)放(fang)電(dian)(dian)時間應該(gai)超過12小(xiao)時,以(yi)便激(ji)活電(dian)(dian)池最(zui)大效能。

真相:鎳氫電池為了達到最完美的飽和狀態,需要經過“補充”和“涓流”過程,這個時間一般在5小時左右。而目前鋰離子電池的(de)“恒(heng)流”、“恒(heng)壓”充(chong)(chong)電(dian)特(te)性(xing)更是將其(qi)深(shen)充(chong)(chong)電(dian)時(shi)間控制在4小(xiao)時(shi)以內。一旦充(chong)(chong)滿(man),電(dian)池內部的(de)保護電(dian)路便會自動停止充(chong)(chong)電(dian),因此這(zhe)種做法是不科學也(ye)沒有實際意義(yi)的(de)。

有人曾(ceng)用(yong)手(shou)機做過(guo)試驗。在用(yong)旅充(chong)(chong)充(chong)(chong)電(dian)(dian)(dian)器(qi)將電(dian)(dian)(dian)池(chi)充(chong)(chong)滿后,轉(zhuan)用(yong)座(zuo)充(chong)(chong)充(chong)(chong)電(dian)(dian)(dian)器(qi)來確(que)認(ren)電(dian)(dian)(dian)池(chi)的飽(bao)和(he)(he)程度(du)。當他發(fa)現座(zuo)充(chong)(chong)充(chong)(chong)電(dian)(dian)(dian)器(qi)仍(reng)(reng)然對(dui)電(dian)(dian)(dian)池(chi)進行(xing)充(chong)(chong)電(dian)(dian)(dian)時,便認(ren)為(wei)(wei)電(dian)(dian)(dian)池(chi)仍(reng)(reng)未達到(dao)飽(bao)和(he)(he)狀態。其實這(zhe)個測試方法欠缺(que)嚴謹。原因(yin)在于(yu),座(zuo)充(chong)(chong)充(chong)(chong)電(dian)(dian)(dian)器(qi)的指示燈并不是檢(jian)測真正飽(bao)和(he)(he)與否的惟一(yi)標(biao)準(zhun)(zhun),座(zuo)充(chong)(chong)充(chong)(chong)電(dian)(dian)(dian)器(qi)的基準(zhun)(zhun)電(dian)(dian)(dian)壓(ya)不一(yi)定等(deng)于(yu)手(shou)機的基準(zhun)(zhun)電(dian)(dian)(dian)壓(ya),因(yin)此當手(shou)機認(ren)為(wei)(wei)電(dian)(dian)(dian)池(chi)達到(dao)飽(bao)和(he)(he)狀態時,座(zuo)充(chong)(chong)充(chong)(chong)電(dian)(dian)(dian)器(qi)也許(xu)并不這(zhe)么認(ren)為(wei)(wei),依然進行(xing)充(chong)(chong)電(dian)(dian)(dian),但是否充(chong)(chong)進去(qu),就只有它自己知(zhi)道了。

只要筆記本電(dian)池充(chong)電(dian)時(shi)間放電(dian)時(shi)間把握得當,則有可(ke)能(neng)會(hui)達到最佳狀(zhuang)態(tai)

謠傳三:只要充電(dian)(dian)電(dian)(dian)池使用得(de)當,就會在某一段循環范圍內出(chu)現最(zui)佳狀態,達到最(zui)大(da)容(rong)量(liang)。

例如(ru)早期的鎳氫(qing)、鎳鎘(ge)電池,如(ru)果使(shi)用得當,定期維護(hu),會在15~203個循環點中(zhong)達(da)到其(qi)容量的最大值(出(chu)廠容量為1200mAh的鎳氫(qing)電池在循環120次后,容量有可能達(da)到1200mAh)。

真相:這種說(shuo)法在(zai)日系(xi)產品(pin)電(dian)池(chi)(chi)中(zhong)(zhong)比較常見,在(zai)其技術規格書(shu)中(zhong)(zhong)的(de)(de)(de)循環特性圖中(zhong)(zhong)通常可以(yi)看到。然而對(dui)目前(qian)主流的(de)(de)(de)鋰離子電(dian)池(chi)(chi)而言,這種循環的(de)(de)(de)峰(feng)值(zhi)現(xian)(xian)(xian)象是(shi)不(bu)存在(zai)的(de)(de)(de)。因為鋰離子電(dian)池(chi)(chi)從(cong)出(chu)廠到報廢(fei),其容(rong)量(liang)的(de)(de)(de)表(biao)現(xian)(xian)(xian)為循環一次少一次,從(cong)未出(chu)現(xian)(xian)(xian)過(guo)容(rong)量(liang)回升的(de)(de)(de)現(xian)(xian)(xian)象。也許(xu)有(you)朋友(you)會(hui)問,某些(xie)ThinkPad筆記本用戶通過(guo)深放電(dian),可以(yi)恢(hui)復(fu)電(dian)池(chi)(chi)的(de)(de)(de)容(rong)量(liang)。實(shi)際上那(nei)只是(shi)測試軟件的(de)(de)(de)錯(cuo)誤檢測而已,電(dian)池(chi)(chi)的(de)(de)(de)實(shi)際容(rong)量(liang)根本沒有(you)提(ti)高。

筆(bi)記(ji)本電(dian)池使用時間(jian)正確的(de)(de)(de)影(ying)響的(de)(de)(de)因素是筆(bi)記(ji)本電(dian)池所處的(de)(de)(de)環(huan)境(jing)的(de)(de)(de)溫度,當然筆(bi)記(ji)本充電(dian)時間(jian)也有一(yi)定(ding)的(de)(de)(de)關系,不過還是次于環(huan)境(jing)的(de)(de)(de)影(ying)響。

鋰離子電池到底有沒有最佳狀態?答案是肯定的,這跟其所受環境溫度的變化有關。一般情況下,鋰離子電池在(zai)26℃~41℃的環境下會(hui)表現出極(ji)好的性(xing)能。而(er)到了(le)低(di)溫(wen)或高溫(wen)狀態,其性(xing)能就(jiu)(jiu)要(yao)大打(da)折扣了(le)。例如你(ni)在(zai)室(shi)外(wai)陽光直照的情況下使(shi)用(yong)筆記(ji)本電腦,就(jiu)(jiu)沒有在(zai)室(shi)內使(shi)用(yong)的時(shi)間(jian)長。

謠傳(chuan)四:兩個標稱(cheng)容量(liang)相同(例如(ru)800mAh)的電池來說,如(ru)果(guo)一個實際測得容量(liang)為860mAh,另一個為805mAh,那么860mAH的就一定比(bi)805mAh的好。

真相(xiang):一般而言,不同(tong)型號(不同(tong)體積(ji))的鋰離子(zi)電(dian)(dian)池(chi)(chi),容(rong)(rong)(rong)量越高使(shi)用(yong)(yong)的時(shi)間也就(jiu)(jiu)越長。如(ru)果(guo)拋開體積(ji)和重量等(deng)因(yin)素,當然(ran)是容(rong)(rong)(rong)量越高越好。但對(dui)于(yu)(yu)兩(liang)個標稱容(rong)(rong)(rong)量相(xiang)同(tong)(例如(ru)上例)的電(dian)(dian)池(chi)(chi)卻未(wei)必。因(yin)為實際容(rong)(rong)(rong)量高的那(nei)個電(dian)(dian)池(chi)(chi),很可能(neng)在電(dian)(dian)極材(cai)料中添加(jia)了(le)用(yong)(yong)于(yu)(yu)增加(jia)初始容(rong)(rong)(rong)量的物質(zhi),減少了(le)用(yong)(yong)于(yu)(yu)穩定電(dian)(dian)極的物質(zhi)。其(qi)結果(guo)就(jiu)(jiu)表現在循環(huan)了(le)幾十次之后(hou),容(rong)(rong)(rong)量高的那(nei)塊迅(xun)速衰減,而容(rong)(rong)(rong)量低的卻依(yi)然(ran)堅挺。國內許(xu)多(duo)廠(chang)(chang)商為了(le)縮減成(cheng)本,擴大銷量,往往就(jiu)(jiu)采用(yong)(yong)了(le)這(zhe)種手段來生產(chan)高容(rong)(rong)(rong)量電(dian)(dian)池(chi)(chi)。用(yong)(yong)戶在使(shi)用(yong)(yong)半(ban)年后(hou)就(jiu)(jiu)會(hui)發現工作(zuo)時(shi)間大為縮短。總之,提高容(rong)(rong)(rong)量的代價就(jiu)(jiu)是犧牲循環(huan)壽命,廠(chang)(chang)商不在電(dian)(dian)池(chi)(chi)的材(cai)料上下文章,是不可能(neng)真正(zheng)提高電(dian)(dian)池(chi)(chi)容(rong)(rong)(rong)量

電池的保存

謠(yao)傳五:充電電池如果不使用,應(ying)該放(fang)光了電再保(bao)存。

真相:其實(shi)不僅(jin)僅(jin)有上面(mian)提到的(de)(de)(de)(de)謠傳,鋰(li)離子(zi)電(dian)池(chi)到底該充滿了(le)(le)保存(cun)還是(shi)放光了(le)(le)保存(cun)肯定會讓(rang)很多人感到迷惑(huo)?這(zhe)一問題的(de)(de)(de)(de)解答(da)要從其先天(tian)性的(de)(de)(de)(de)缺陷(xian)談起,那就是(shi)“老化(hua)效(xiao)應”。鋰(li)離子(zi)電(dian)池(chi)在存(cun)儲(chu)一段時(shi)間后,即使不進(jin)行循環使用,其部分容(rong)量也會永久(jiu)性的(de)(de)(de)(de)喪(sang)失(shi),這(zhe)是(shi)因為鋰(li)離子(zi)電(dian)池(chi)的(de)(de)(de)(de)正負極(ji)材料(liao)自出廠時(shi)便開始了(le)(le)它(ta)們的(de)(de)(de)(de)衰竭(jie)歷程。不同(tong)的(de)(de)(de)(de)溫度及飽和(he)程度下老化(hua)的(de)(de)(de)(de)幅度也是(shi)不同(tong)的(de)(de)(de)(de),具(ju)體幅度可見表所示。

由此可見,存儲溫度越高、電池充的越滿,容量的幅度就越大。因此對于鋰離子電池的長(chang)期(qi)保存(cun)(cun),用戶應當(dang)將其電量控(kong)制(zhi)在40%,并(bing)存(cun)(cun)儲在15℃甚至更低的溫度下即可(ke)。至于那些鎳氫和鎳鎘電池則不存(cun)(cun)在這一(yi)“老化效應”,長(chang)期(qi)儲存(cun)(cun)后只需進行幾次完全(quan)充放電即可(ke)恢復(fu)其原始容量充滿電后續充

謠傳六:筆記本電(dian)(dian)池(chi)(chi)充(chong)電(dian)(dian)時(shi)間(jian)一般是(shi)有控制的,對于筆記本電(dian)(dian)池(chi)(chi)充(chong)電(dian)(dian)充(chong)滿(man)以后,在繼續對電(dian)(dian)池(chi)(chi)充(chong)電(dian)(dian)充(chong)1~2小時(shi),這樣(yang)做有利(li)于增(zeng)強電(dian)(dian)池(chi)(chi)的飽(bao)和度。

   其實現(xian)在(zai)的筆記本而電(dian)(dian)(dian)池一(yi)般都有筆記本過電(dian)(dian)(dian)保護電(dian)(dian)(dian)路(lu),充滿點以后他會自(zi)動切斷(duan)充電(dian)(dian)(dian)電(dian)(dian)(dian)路(lu)。所以充電(dian)(dian)(dian)時間是(shi)固定的,滿了以后電(dian)(dian)(dian)源(yuan)只對筆記本設(she)備進(jin)行供電(dian)(dian)(dian),即時電(dian)(dian)(dian)池再充12個小時也是(shi)沒有用處的。

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