筆(bi)記(ji)本(ben)電(dian)池(chi)(chi)電(dian)量(liang)越(yue)用越(yue)少正常嗎 筆(bi)記(ji)本(ben)電(dian)池(chi)(chi)電(dian)量(liang)計量(liang)方(fang)法

筆(bi)記(ji)(ji)本(ben)電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)電(dian)(dian)(dian)(dian)量越(yue)用越(yue)少(shao)正(zheng)常(chang)嗎？要解釋這(zhe)個問題，就(jiu)得從電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)的(de)自身結(jie)構(gou)談起。我(wo)們之前(qian)了(le)解了(le)電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)的(de)基(ji)本(ben)結(jie)構(gou)，筆(bi)記(ji)(ji)本(ben)電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)是由(you)電(dian)(dian)(dian)(dian)芯(xin)(xin)和管(guan)(guan)理(li)芯(xin)(xin)片構(gou)成的(de)。電(dian)(dian)(dian)(dian)芯(xin)(xin)是電(dian)(dian)(dian)(dian)量的(de)存儲“倉庫”，管(guan)(guan)理(li)芯(xin)(xin)片則能(neng)計算(suan)電(dian)(dian)(dian)(dian)量和管(guan)(guan)理(li)充放電(dian)(dian)(dian)(dian)過程。電(dian)(dian)(dian)(dian)芯(xin)(xin)中(zhong)起作用的(de)主要元素是鋰，這(zhe)是一種活躍的(de)元素，為了(le)保(bao)障(zhang)安全，只(zhi)能(neng)以離(li)子態存在(zai)(zai)在(zai)(zai)電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)中(zhong)。鋰電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)電(dian)(dian)(dian)(dian)芯(xin)(xin)外形跟(gen)普通電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)差不(bu)多，但做(zuo)筆(bi)記(ji)(ji)本(ben)電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)時，往往是成組出(chu)現的(de)。我(wo)們常(chang)看到的(de)“四芯(xin)(xin)”、“六芯(xin)(xin)”電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)就(jiu)是指電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)里的(de)電(dian)(dian)(dian)(dian)芯(xin)(xin)數。

電(dian)(dian)(dian)芯(xin)(xin)多，意味著容(rong)量(liang)(liang)也大，高容(rong)電(dian)(dian)(dian)池(chi)(chi)的(de)(de)(de)電(dian)(dian)(dian)芯(xin)(xin)數量(liang)(liang)一(yi)般都在八個(ge)左右。之所(suo)以(yi)談到電(dian)(dian)(dian)芯(xin)(xin)組(zu)(zu)(zu)，是因為成組(zu)(zu)(zu)的(de)(de)(de)電(dian)(dian)(dian)芯(xin)(xin)正(zheng)是導致電(dian)(dian)(dian)池(chi)(chi)電(dian)(dian)(dian)量(liang)(liang)減少的(de)(de)(de)“罪魁(kui)禍首”。電(dian)(dian)(dian)芯(xin)(xin)組(zu)(zu)(zu)中(zhong)的(de)(de)(de)各個(ge)電(dian)(dian)(dian)芯(xin)(xin)，其品(pin)質和放電(dian)(dian)(dian)水平不盡相同。在放電(dian)(dian)(dian)以(yi)后，為了保持(chi)電(dian)(dian)(dian)壓(ya)穩定，管理(li)芯(xin)(xin)片會(hui)檢(jian)測(ce)到最差的(de)(de)(de)那一(yi)個(ge)電(dian)(dian)(dian)芯(xin)(xin)進行充電(dian)(dian)(dian)保護。常此(ci)以(yi)往，整個(ge)電(dian)(dian)(dian)池(chi)(chi)的(de)(de)(de)電(dian)(dian)(dian)量(liang)(liang)自然會(hui)逐漸減少。出(chu)現這(zhe)(zhe)種現象后就可以(yi)使用(yong)電(dian)(dian)(dian)池(chi)(chi)校正(zheng)的(de)(de)(de)功能(neng)了，這(zhe)(zhe)個(ge)功能(neng)可以(yi)平衡(heng)多節(jie)電(dian)(dian)(dian)池(chi)(chi)所(suo)負擔的(de)(de)(de)“工作”。

在這里應該提一下電(dian)池電(dian)量的(de)計(ji)量方(fang)式，常見的(de)方(fang)法有4種，但一般來(lai)說(shuo)都是綜合幾種方(fang)法使用，以其中一種為(wei)主要計(ji)算(suan)(suan)方(fang)法，其余輔助計(ji)算(suan)(suan)的(de)方(fang)式實(shi)現電(dian)量計(ji)算(suan)(suan)、管理。

開路電壓測量法

這(zhe)種(zhong)方(fang)法(fa)是通過測量(liang)電(dian)(dian)池(chi)(chi)(chi)在(zai)靜止狀(zhuang)態下的(de)電(dian)(dian)壓(ya)數值來計算電(dian)(dian)池(chi)(chi)(chi)的(de)剩(sheng)余(yu)容量(liang)，不過由于鋰(li)離子電(dian)(dian)池(chi)(chi)(chi)的(de)靜止時電(dian)(dian)壓(ya)與剩(sheng)余(yu)容量(liang)間(jian)的(de)關系屬于非(fei)線性，因此這(zhe)種(zhong)方(fang)法(fa)的(de)測量(liang)值并不準(zhun)確，絕大部(bu)分(fen)手機(ji)電(dian)(dian)池(chi)(chi)(chi)都采用這(zhe)種(zhong)計算方(fang)法(fa)。

庫侖計算法

該方(fang)法是通過(guo)測量(liang)(liang)電(dian)(dian)池(chi)充(chong)電(dian)(dian)和放電(dian)(dian)的(de)電(dian)(dian)流(liu)，將電(dian)(dian)流(liu)值(zhi)(zhi)與時間值(zhi)(zhi)的(de)乘積(ji)進(jin)行(xing)積(ji)分后(hou)計(ji)算得到電(dian)(dian)池(chi)所充(chong)進(jin)的(de)電(dian)(dian)量(liang)(liang)和所放出的(de)電(dian)(dian)量(liang)(liang)，庫侖(lun)計(ji)算法是一種較為精確(que)的(de)電(dian)(dian)量(liang)(liang)計(ji)算方(fang)法。

阻抗測量法

它通(tong)過測量(liang)電池內阻值得到電池的剩(sheng)余(yu)容量(liang)值。

綜合查表法

通過設置一個相關表，將電(dian)壓、電(dian)流(liu)、溫(wen)度等參數輸入，就可以查詢得到電(dian)池(chi)的(de)剩余容(rong)量。

但不論哪種(zhong)方法，在充電時管理(li)芯(xin)片都遵(zun)循“木桶原理(li)”，以狀(zhuang)態最差的(de)電芯(xin)為準(zhun)來進行(xing)保護(hu)(hu)。因(yin)此經常進行(xing)電池校正(zheng)能在一定(ding)程度上保護(hu)(hu)電池、延長電池整體壽命。