對于不做鋰電池的朋友來說，鋰電池放電倍率是什么或者鋰電池放電C數是什么并不了解，更不要說鋰電池放電倍率有哪些了。下面就跟格瑞普電池的電池研發技術工程師一起來了解一下關于鋰電池放電倍率的相關知識吧。

下面來了解鋰(li)電(dian)(dian)池放(fang)(fang)(fang)(fang)電(dian)(dian)C數。C表示(shi)鋰(li)電(dian)(dian)池放(fang)(fang)(fang)(fang)電(dian)(dian)倍率(lv)的符號，比如1C表示(shi)鋰(li)電(dian)(dian)池可以(yi)做到按1倍放(fang)(fang)(fang)(fang)電(dian)(dian)速率(lv)來穩定放(fang)(fang)(fang)(fang)電(dian)(dian)的能力，以(yi)此(ci)類推(tui)其他比如2C、10C、40C等，就(jiu)代表鋰(li)電(dian)(dian)池可以(yi)穩定放(fang)(fang)(fang)(fang)電(dian)(dian)的最大(da)電(dian)(dian)流放(fang)(fang)(fang)(fang)電(dian)(dian)倍數。

每一(yi)個電(dian)池的(de)(de)(de)(de)容量在一(yi)定(ding)時(shi)(shi)間內(nei)是(shi)一(yi)定(ding)量的(de)(de)(de)(de)，電(dian)池的(de)(de)(de)(de)放電(dian)倍(bei)率是(shi)指與常規(gui)放電(dian)相比,在同(tong)等時(shi)(shi)間內(nei)，放電(dian)量是(shi)常規(gui)放電(dian)的(de)(de)(de)(de)幾(ji)倍(bei)。在不同(tong)電(dian)流下(xia)能放出的(de)(de)(de)(de)能量，一(yi)般而言，電(dian)芯都需要測試在不同(tong)恒流情況下(xia)的(de)(de)(de)(de)放電(dian)性能。電(dian)池倍(bei)率（C數一(yi)多少倍(bei)率）如何(he)評(ping)估(gu)？

當用電(dian)(dian)(dian)(dian)(dian)池1C容(rong)(rong)量(liang)(liang)的N倍(bei)電(dian)(dian)(dian)(dian)(dian)流放(fang)(fang)電(dian)(dian)(dian)(dian)(dian)，其放(fang)(fang)出容(rong)(rong)量(liang)(liang)在電(dian)(dian)(dian)(dian)(dian)池1C容(rong)(rong)量(liang)(liang)的85%以(yi)上時，我們認為電(dian)(dian)(dian)(dian)(dian)池的放(fang)(fang)電(dian)(dian)(dian)(dian)(dian)倍(bei)率為N倍(bei)率。

如：一個2000mAh電(dian)池(chi)，當用(yong)2000mA電(dian)池(chi)放(fang)電(dian)時，放(fang)電(dian)時間(jian)為60min，如果用(yong)60000mA放(fang)電(dian)，放(fang)電(dian)時間(jian)在1.7min，我(wo)們認為該電(dian)池(chi)放(fang)電(dian)倍(bei)(bei)率(lv)是30倍(bei)(bei)率(lv)（30C）。

平均電(dian)壓(ya)（V）=放(fang)電(dian)電(dian)量(liang)（Wh）÷放(fang)電(dian)電(dian)流(liu)（A）

中值電(dian)(dian)壓(ya)（V）：可以理解為總放電(dian)(dian)時(shi)間1/2時(shi)所對應的電(dian)(dian)壓(ya)值。

中值電(dian)(dian)壓一般也可(ke)(ke)以稱為(wei)放(fang)電(dian)(dian)平(ping)臺，放(fang)電(dian)(dian)平(ping)臺與電(dian)(dian)池(chi)的(de)放(fang)電(dian)(dian)倍(bei)率（電(dian)(dian)流）相關，放(fang)電(dian)(dian)倍(bei)率越(yue)(yue)高(gao)放(fang)電(dian)(dian)平(ping)臺電(dian)(dian)壓越(yue)(yue)低，可(ke)(ke)能通(tong)過計算電(dian)(dian)池(chi)放(fang)電(dian)(dian)能量（Wh）/放(fang)電(dian)(dian)容量（Ah）來(lai)確定其放(fang)電(dian)(dian)平(ping)臺。

那(nei)么鋰(li)(li)電(dian)(dian)池放(fang)(fang)(fang)電(dian)(dian)倍(bei)率(lv)有哪(na)些？就(jiu)(jiu)目前(qian)來看鋰(li)(li)電(dian)(dian)池放(fang)(fang)(fang)電(dian)(dian)倍(bei)率(lv)在市場看到的(de)(de)最大倍(bei)率(lv)有達到120C的(de)(de)放(fang)(fang)(fang)電(dian)(dian)倍(bei)率(lv)，至于最小倍(bei)率(lv)則(ze)沒有限制(zhi)(zhi)，因為(wei)(wei)鋰(li)(li)電(dian)(dian)池放(fang)(fang)(fang)電(dian)(dian)始終存在，一般來說1C一下(xia)的(de)(de)放(fang)(fang)(fang)電(dian)(dian)倍(bei)率(lv)為(wei)(wei)小功率(lv)的(de)(de)正常放(fang)(fang)(fang)電(dian)(dian)，多為(wei)(wei)一下(xia)靈敏小巧的(de)(de)電(dian)(dian)子(zi)穿戴設備的(de)(de)放(fang)(fang)(fang)電(dian)(dian)需(xu)求，比如(ru)0.1C、0.2C、0.5C等(deng)等(deng)。也(ye)就(jiu)(jiu)是說鋰(li)(li)電(dian)(dian)池放(fang)(fang)(fang)電(dian)(dian)倍(bei)率(lv)的(de)(de)范(fan)圍目前(qian)來說是120C以下(xia)，可(ke)按照實際(ji)需(xu)求在范(fan)圍內定制(zhi)(zhi)所需(xu)的(de)(de)放(fang)(fang)(fang)電(dian)(dian)倍(bei)率(lv)電(dian)(dian)池。也(ye)就(jiu)(jiu)是說鋰(li)(li)電(dian)(dian)池放(fang)(fang)(fang)電(dian)(dian)倍(bei)率(lv)有1C到120C的(de)(de)倍(bei)率(lv)和1C以下(xia)的(de)(de)小電(dian)(dian)流這兩大類。