電池使用基本常識和術語
1、什么是1C充電電流?
例如一節5號鎳氫電池的電容量為1200mAH,而另一節則為1600mAH。我們把一節電池的電容量稱為1C,可見1C只是一個邏輯概念,同樣的1C并不相等,1C充電電流可以是1200mA,也可以是1600mA。
2、什么是快速充電?
充電電流大于0.2C,小于0.8C則是快速充電。
3、什么是慢速充電?
充電電流在0.1C-0.2C之間時,我們稱為慢速充電。
4、什么是涓流充電?
充電電流小于0.1C時,我們稱為涓流充電。
5、什么是超高速充電?
充電電流大于0.8C時,我們稱之為超高速充電。
6、什么是恒流充電方式?
恒流充電法是保持充電電流強度不變的充電方法。
恒流充電器通常使用慢速充電電流。
對充(chong)電(dian)(dian)(dian)(dian)時間(jian)(jian)的(de)計算有個簡單的(de)公式:Hour=1.5C/充(chong)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)流(liu)(liu)。例如:對1200mAH的(de)電(dian)(dian)(dian)(dian)池充(chong)電(dian)(dian)(dian)(dian),充(chong)電(dian)(dian)(dian)(dian)器的(de)充(chong)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)流(liu)(liu)為(wei)150mA,則時間(jian)(jian)為(wei) 1800mAH/150mA等于12小時。當然在(zai)很多時候并不(bu)(bu)能(neng)計算出正好的(de)時間(jian)(jian),我們可以挑離得最近的(de)半小時以方便記時。例如:充(chong)電(dian)(dian)(dian)(dian)器的(de)電(dian)(dian)(dian)(dian)流(liu)(liu)為(wei) 160mA,對1400mAH的(de)電(dian)(dian)(dian)(dian)池充(chong)電(dian)(dian)(dian)(dian),則時間(jian)(jian)為(wei)2100mAH/160mA約為(wei)13小時,而不(bu)(bu)用計算到(dao)分。
什么是快速自動充電方式?
通常所使用的是余弦法充電,也就是說并非用恒定的大電流充電,而是像余弦波那樣電流強度隨之變化,這樣能緩解熱量的積聚,從而將溫度控制在一定范圍內。
8、什么是脈沖式充電法?
脈沖充電方式首先是用脈沖電流對電池充電,然后讓電池停充一段時間,如此循環。
9、大電流充電對電池壽命的影響大不大?
大電流充電對電池壽命的影響是很小的,在很多情況下我們都要用到快速充電甚至超高速充電,充電電流有時可以達到2C或更高。
大電流并不是電池殺手,真正對電池壽命產生影響的是大電流充電時產生的高熱。
10、如何解決大電流充電過程中的發熱問題(過溫保護)?
過高的溫度對充電電池是有害的,在慢速恒流充電器中,由于是慢速充電,產生的熱量在可控制范圍內,因此并不需要采取特殊的措施。但在快速自動充電器中,采用快充電流就會產生更高的溫度。
因此目前市場上的快速自動充電器都采用了各種方法來降低充電時的溫度,通常所使用的是余弦法。一些充電器甚至加裝散熱風扇來解決發熱問題。
11、超高速充電器如何進行過熱保護?
由于超高速充電器需要極大的充電電流,有些甚至使用了2C-3C的充電電流,其發熱問題尤為嚴重,僅僅采用余弦波充電還不夠,因此這類充電器很多都采用在一個余弦波后插入一個很短暫的放電這種方法。這種做法可以緩解由于反電勢消耗充電電流所產生的熱量積累,從而進一步控制溫度。
12、什么是-△V保護?
使用快速充電器的另一個問題是,當充電時間到了之后如果忘記停止充電,對電池的傷害要遠大于慢速恒流充電器過充產生的傷害。因此為了解決過充問題,快速充電器一般都采用了比如-△V保護等方法來判斷電池是否接近充滿,這些充電器都使用了控制電路或者IC芯片來完成這一任務。當電池接近充滿時,控制電路會自動轉入涓流充電模式,對電池進行涓流充電。采用涓流電流對電池進行充電的好處是很明顯的,其一如前所述,涓流充電能將電池(chi)充(chong)的很(hen)滿,其次就是不(bu)用(yong)擔心過充(chong)的問題,因此
進行(xing)充電的(de)(de)(de)好處是(shi)(shi)很明顯的(de)(de)(de),其一如前所(suo)述,涓流充電能將電池充的(de)(de)(de)很滿,其次就(jiu)是(shi)(shi)不用(yong)擔心(xin)過(guo)充的(de)(de)(de)問(wen)題(ti),因(yin)此使用(yong)這(zhe)類充電器(qi)的(de)(de)(de)最大(da)好處就(jiu)是(shi)(shi)不用(yong)再(zai)去計算時間。
13、常見的充電控制方式有哪些?
為避免電池過充,需要在必要時對充電過程或在充電完成時予以控制或終止。常見的充電控制方法有以下六種:
1)時間控制:
通過(guo)設置一定的(de)(de)充(chong)電時(shi)間(jian)來控制(zhi)充(chong)電終點,一般(ban)按照(zhao)充(chong)入120%~150%電池(chi)標稱容(rong)量所需的(de)(de)對應時(shi)間(jian)來控制(zhi)。標準(zhun)充(chong)電一般(ban)采用(yong)時(shi)間(jian)控制(zhi)方式,比如按照(zhao)IEC標準(zhun)測試(shi)電池(chi)容(rong)量時(shi)即采用(yong)0.1C充(chong)電16小(xiao)時(shi)的(de)(de)方法。
2)-△V控制:
當電(dian)(dian)池(chi)充滿電(dian)(dian)時,電(dian)(dian)池(chi)電(dian)(dian)壓會達(da)到一個峰值,然后電(dian)(dian)壓會下(xia)降(jiang)。當電(dian)(dian)壓下(xia)降(jiang)一定(ding)的(de)值時,終止(zhi)充電(dian)(dian)。
3)峰值電壓控制:
通(tong)過檢測電(dian)池的(de)電(dian)壓來(lai)判(pan)斷(duan)充(chong)電(dian)的(de)終(zhong)(zhong)點,當電(dian)壓達到峰值時,終(zhong)(zhong)止充(chong)電(dian)。
4)溫度控制:
電(dian)池在充電(dian)過程(cheng)中(zhong),溫度(du)會逐漸(jian)升高。充滿(man)電(dian)時,電(dian)池溫度(du)與周圍環境溫度(du)的差值(zhi)會達到最大。當差值(zhi)最大時停止充電(dian)。
5)dT/dt控制:
通過檢測(ce)電池溫度相(xiang)對于充電時間的變化率來判斷充電的終點(dian)。
6)TCO控制:
當電(dian)池溫度升高一定數(shu)值時停止(zhi)充電(dian)。
充電電池的種類
鎳鎘電池(Ni-Cd)
電壓:1.2V
使用壽命為:500次
放電溫度為:-20度~60度
充電溫度為:0度~45度
溫度為:0度~45度
備注(zhu):耐過充(chong)能力較強。
鎳氫電池(Ni-Mh)
電壓:1.2V
使用壽命為:1000次
放電溫度為:-10度~45度
充電溫度為:10度~45度
備(bei)注:目前最高容量是(shi)2100mAh左右(you)。
鋰離子電池(Li-lon)
電壓:3.6V
使用壽命為:500次
放電溫度為:-20度~60度
充電溫度為:0度~45度
備注:重量(liang)比(bi)鎳(nie)氫電池輕30%~40%,容量(liang)高(gao)出鎳(nie)氫電池60%以上。但是不耐過(guo)(guo)充,如(ru)果過(guo)(guo)充會造成溫度(du)過(guo)(guo)高(gao)而破(po)壞(huai)結構=>爆炸。
鋰聚合物電池(Li-polymer)
電壓:3.7V
使用壽命為:500次
放電溫度為:-20度~60度
充電溫度為:0度~45度
備注(zhu):鋰(li)電的改(gai)良(liang)型,沒有電池(chi)液,而改(gai)用聚合物電解(jie)質(zhi),可(ke)以做成各種形狀,比鋰(li)電池(chi)穩(wen)定。
鉛酸電池(Sealed)
電壓:2V
使用壽命為:200~300次
放電溫度為:0度~45度
充電溫度(du)為:0度(du)~45度(du)
溫度為:0度~45度
備注(zhu):就(jiu)是(shi)一(yi)般車用(yong)電瓶(它(ta)是(shi)以6個2V串聯成12V的(de)),免加(jia)水的(de)電池使用(yong)壽(shou)命長達10年,但體積和重量是(shi)最大的(de)。
電池充電的名詞解釋
充電率(C-rate)
C是Capacity的第一個字母,用來表示電池充放電時電流的大小數值。
例如:充電(dian)電(dian)池的額定容量為1100mAh時(shi),即表示以1100mAh(1C)放電(dian)時(shi)間可(ke)持續(xu)1小(xiao)時(shi),如以200mA(0.2C)放電(dian)時(shi)間可(ke)持續(xu)5小(xiao)時(shi),充電(dian)也可(ke)按此對照計(ji)算(suan)。
終止電壓(Cut-off discharge voltage)
指電池放電時,電壓下降到電池不宜再繼續放電的最低工作電壓值。
根據不(bu)(bu)同(tong)(tong)的(de)電池類(lei)型及不(bu)(bu)同(tong)(tong)的(de)放電條件(jian),對電池的(de)容量和壽命的(de)要求(qiu)也不(bu)(bu)同(tong)(tong),因此規定的(de)電池放電的(de)終(zhong)止電壓也不(bu)(bu)相同(tong)(tong)。
開路電壓(Open circuit voltage OCV)
電池不放電時,電池兩極之間的電位差被稱為開路電壓。
電池(chi)的(de)開(kai)路電壓(ya),會依電池(chi)正(zheng)、負極與電解(jie)液的(de)材料而異,如果電池(chi)正(zheng)、負極的(de)材料完(wan)全一(yi)(yi)樣,那么不(bu)管電池(chi)的(de)體積有多大,幾何結構如何變化,起開(kai)路電壓(ya)都一(yi)(yi)樣的(de)。
放電深度(Depth of discharge DOD)
在電池使用過程中,電池放出的容量占其額定容量的百分比,稱為放電深度。
放電(dian)深(shen)度的(de)高低(di)和二次(ci)電(dian)池(chi)的(de)充電(dian)壽(shou)命有很(hen)深(shen)的(de)關(guan)系,當二次(ci)電(dian)池(chi)的(de)放電(dian)深(shen)度越(yue)深(shen),其充電(dian)壽(shou)命就越(yue)短,因此在使用時應盡量避(bi)免(mian)深(shen)度放電(dian)。
過放電(Over discharge)
電(dian)池(chi)(chi)若是在放電(dian)過程中,超過電(dian)池(chi)(chi)放電(dian)的終止電(dian)壓值,還繼(ji)續(xu)放電(dian)時(shi)就可(ke)能會造(zao)成(cheng)電(dian)池(chi)(chi)內壓升高,正、負極活性物質(zhi)的可(ke)逆性遭(zao)到損壞,使電(dian)池(chi)(chi)的容(rong)量產生明顯減少。
過充電(Over charge)
電(dian)池(chi)在(zai)充(chong)電(dian)時,在(zai)達到充(chong)滿狀態后,若(ruo)還繼(ji)續充(chong)電(dian),可能導(dao)致(zhi)電(dian)池(chi)內壓升高、電(dian)池(chi)變形(xing)、漏(lou)夜(ye)等情況發生,電(dian)池(chi)的(de)性能也(ye)會顯(xian)著降低和損(sun)壞。
能量密度(Energy density)
電池的平均單位體積或質量所釋放出的電能。
一般在相同(tong)體(ti)積下,鋰離(li)子(zi)電(dian)(dian)池(chi)(chi)(chi)的能量密度是(shi)鎳鎘電(dian)(dian)池(chi)(chi)(chi)的2.5倍(bei)(bei),是(shi)鎳氫(qing)電(dian)(dian)池(chi)(chi)(chi)的1.8倍(bei)(bei),因此在電(dian)(dian)池(chi)(chi)(chi)容量相等的情況下,鋰離(li)子(zi)電(dian)(dian)池(chi)(chi)(chi)就會比鎳鎘、鎳氫(qing)電(dian)(dian)池(chi)(chi)(chi)的體(ti)積更小,重(zhong)量更輕。
自我放電(Self discharge)
電池不管在有無被使用的狀態下,由于各種原因,都會引起其電量損失的現象。
若是(shi)以一個(ge)月為單位來計算的話(hua),鋰離子電池(chi)自我(wo)放(fang)電約是(shi)1%-2%、鎳氫電池(chi)自我(wo)放(fang)電約3%-5%。
充電循環壽命(Cycle life)
充電電池在反(fan)復充放(fang)電使用下(xia),電池容(rong)量(liang)回逐漸下(xia)降到初期容(rong)量(liang)的60%-80%。
記憶效應(Memory effect)
在電(dian)(dian)池(chi)(chi)充(chong)放(fang)電(dian)(dian)過程中,會(hui)在電(dian)(dian)池(chi)(chi)極板(ban)上產(chan)生(sheng)許多小氣泡(pao)(pao),時(shi)間(jian)一久,這(zhe)些(xie)氣泡(pao)(pao)會(hui)減少(shao)電(dian)(dian)池(chi)(chi)極板(ban)的面積,也(ye)間(jian)接影響電(dian)(dian)池(chi)(chi)的容量。
充電電池的充放電的基本要求
新買的充電電池(chi)要(yao)充電8-12小(xiao)時?
不(bu)論任何電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)都有(you)(you)自我放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)特性,所以當(dang)新(xin)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)到你(ni)(ni)手中時(shi)(shi),這(zhe)(zhe)(zhe)中間(jian)(jian)可(ke)(ke)能(neng)(neng)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)已(yi)經經過(guo)了一(yi)段(duan)時(shi)(shi)間(jian)(jian)的(de)(de)(de)(de)(de)自我放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)了。這(zhe)(zhe)(zhe)就是充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)內部的(de)(de)(de)(de)(de)化(hua)(hua)學原料已(yi)經歷一(yi)段(duan)時(shi)(shi)間(jian)(jian)沒(mei)有(you)(you)使(shi)用,出(chu)現(xian)(xian)“鈍(dun)(dun)化(hua)(hua)”狀態,無法充(chong)(chong)(chong)(chong)分發揮(hui)化(hua)(hua)學反應(ying),提供足夠(gou)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓。在(zai)(zai)這(zhe)(zhe)(zhe)種情況下(xia),第一(yi)次(ci)使(shi)用充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)時(shi)(shi),一(yi)定(ding)要將(jiang)(jiang)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)充(chong)(chong)(chong)(chong)滿(man),讓電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓恢復到原有(you)(you)的(de)(de)(de)(de)(de)水平(ping)。事實上,如果你(ni)(ni)的(de)(de)(de)(de)(de)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)長(chang)時(shi)(shi)間(jian)(jian)沒(mei)有(you)(you)使(shi)用,也一(yi)樣(yang)會(hui)(hui)產生這(zhe)(zhe)(zhe)種“鈍(dun)(dun)化(hua)(hua)”現(xian)(xian)象,而且情況會(hui)(hui)更嚴(yan)重。最好(hao)能(neng)(neng)對(dui)(dui)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)進行(xing)3次(ci)充(chong)(chong)(chong)(chong)放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)過(guo) 程(cheng),將(jiang)(jiang)有(you)(you)助充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)的(de)(de)(de)(de)(de)活化(hua)(hua)作用。讓充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)內部的(de)(de)(de)(de)(de)化(hua)(hua)學物質可(ke)(ke)以充(chong)(chong)(chong)(chong)分發揮(hui)應(ying)有(you)(you)的(de)(de)(de)(de)(de)效果(鎳鎘電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi))。有(you)(you)時(shi)(shi)新(xin)購買的(de)(de)(de)(de)(de)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi),放進充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器的(de)(de)(de)(de)(de)時(shi)(shi)候,會(hui)(hui)在(zai)(zai)還沒(mei)充(chong)(chong)(chong)(chong)飽電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)之前(qian)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器就停止(zhi)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)了。當(dang)遇(yu)見這(zhe)(zhe)(zhe)種問(wen)題的(de)(de)(de)(de)(de)時(shi)(shi)候,你(ni)(ni)只要將(jiang)(jiang)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)移開(kai)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器,然后(hou)在(zai)(zai)放進充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器繼續充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)。這(zhe)(zhe)(zhe)對(dui)(dui)于新(xin)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)是很正常的(de)(de)(de)(de)(de)現(xian)(xian)象,不(bu)是你(ni)(ni)購買到不(bu)良的(de)(de)(de)(de)(de)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(鎳氫、鋰離(li)子電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi))。一(yi)般(ban)來說(shuo)對(dui)(dui)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)時(shi)(shi)間(jian)(jian)不(bu)能(neng)(neng)太久,最多12小(xiao)時(shi)(shi)就足夠(gou),如果一(yi)旦過(guo)度(du)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)就會(hui)(hui)對(dui)(dui)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)造成損(sun)壞。
如何計算充電時間?
充電時間(小時)=充電電池容量(mAh)/充電電流(mA)*1.5的系數
假如(ru)你用1600mAh的(de)充(chong)電(dian)(dian)電(dian)(dian)池,充(chong)電(dian)(dian)器用400mA的(de)電(dian)(dian)流充(chong)電(dian)(dian),則充(chong)電(dian)(dian)時(shi)間為:1600/400*1.5=6小時(shi)(注意(yi):這種方法不(bu)適用新購買(mai)或長期未使用的(de)充(chong)電(dian)(dian)電(dian)(dian)池)
鎳氫充電電池和鋰離子充電電池其實也是有記憶效應,使用起來真的不用放電嗎?
其實上鎳氫充電電池和鋰離子充電電池的記憶效應是十分輕微的,并不值得我們去注意它。
(請注意(yi)看到(dao)這(zhe)里時,就不(bu)要(yao)利用(yong)(yong)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)器的(de)(de)放(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)功能(neng)對(dui)(dui)鎳(nie)(nie)氫充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)和鋰(li)離(li)子充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)進(jin)行放(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)動(dong)作,尤其是(shi)鋰(li)離(li)子充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi),由(you)于本身的(de)(de)材質因數(shu),并不(bu)允許(xu)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)本身能(neng)夠承受充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)器的(de)(de)強制放(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)。如果你硬要(yao)對(dui)(dui)鋰(li)離(li)子充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)進(jin)行放(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian),最終將導(dao)致(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)損壞。)另外,你使(shi)用(yong)(yong)需(xu)放(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)鎳(nie)(nie)鎘(ge)(ge)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi),那么建(jian)議(yi)你,不(bu)論(lun)使(shi)用(yong)(yong)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)的(de)(de)次(ci)數(shu)是(shi)否頻繁(fan),最好每隔兩、三個月左右就對(dui)(dui)鎳(nie)(nie)鎘(ge)(ge)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)進(jin)行一(yi)次(ci)充(chong)(chong)放(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian),這(zhe)樣可以(yi)確保(bao)鎳(nie)(nie)鎘(ge)(ge)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)的(de)(de)記憶效應(ying)對(dui)(dui)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)的(de)(de)影(ying)響減(jian)到(dao)最低狀態(tai)。
電(dian)機、漿(jiang)、電(dian)池、機型的相互關系
電機(ji)KV值(zhi):電機(ji)的(de)轉速(su)(空載(zai))=KV值(zhi)X電壓;例如KV1000的(de)電機(ji)在10V電壓下(xia)它的(de)轉速(su)(空載(zai))就(jiu)是10000轉/分鐘。
電(dian)機(ji)的KV值越(yue)高,提供出來的扭力就越(yue)小(xiao)。所以(yi),KV值的大(da)小(xiao)就與(yu)漿有著(zhu)密切的關系,以(yi)下(xia)就這點提供一下(xia)配漿經驗(yan):
一般電機與漿是這樣配的:
3S電池下;KV900-1000的電機配1060或1047漿,9寸漿也可
KV1200-1400配9050(9寸漿)至8*6漿
KV1600-1800左右的7寸至6寸漿
KV2200-2800左右的5寸漿
KV3000-3500左右的(de)4530漿
2S電池下;KV1300-1500左右用9050漿
KV1800左右用7060漿
KV2500-3000左右用5X3漿
KV3200-4000左右用4530漿
漿的大小與電流關系:因為漿相對越大在產生推力的效率就越高
例如:同用3S電池,電流同樣是10安(假設)
用KV1000配1060漿與 KV3000配4530漿它(ta)們分別產生的(de)推力前者(zhe)是后者(zhe)的(de)兩倍。
機型(xing)與(yu)電機、漿(jiang)的關系:
一(yi)般(ban)來說:漿越大對飛(fei)機所產生的反扭力(li)越大,所以漿的大小(xiao)與機的翼展大小(xiao)有(you)著(zhu)(zhu)一(yi)定關系(xi),但漿與電(dian)機也(ye)有(you)著(zhu)(zhu)上面所講的關系(xi)。
例如用1060漿(jiang),機的翼展就(jiu)得要在80CM以(yi)(yi)上(shang)為合適,不然的話機就(jiu)容易造成(cheng)反扭(niu);又如用8*6的漿(jiang)翼展就(jiu)得在60以(yi)(yi)上(shang)。
再比如:用(yong)4530漿做(zuo)翼展(zhan)1米以(yi)上(shang)機行否? 是可(ke)以(yi),但飛機飛起來會(hui)很耗電,因為翼展(zhan)大(da)飛行的(de)阻力(li)大(da),而4530漿產生的(de)推(tui)力(li)相對情況下小(上(shang)面(mian)漿的(de)大(da)小與電流關(guan)系有講到)。
所以(yi)模友在選(xuan)擇玩什么(me)機型(xing)的(de)時候就(jiu)要(yao)(yao)注(zhu)意(yi)這4者的(de)關系,尤其是新(xin)手選(xuan)擇機型(xing),一定要(yao)(yao)看這機型(xing)翼(yi)展大小選(xuan)擇配(pei)電(dian)機、漿、電(dian)池,特別要(yao)(yao)注(zhu)意(yi)的(de)是,不能用大漿配(pei)高KV的(de)電(dian)機,否則燒電(dian)機還影響了電(dian)池,有可能連電(dian)調也燒掉。
另外,有些模友誤認為,電(dian)機的(de)推(tui)力越(yue)大(da),飛(fei)機就能更(geng)加克服阻(zu)力飛(fei)得(de)更(geng)快,這(zhe)個問題就留給有興趣的(de)模友去討(tao)論一下了。
1060漿,10代表長的直徑是10寸,60表示漿角(螺距).
前兩位數表示直徑,后兩位表示螺距。
電池的放電能力,最大持續電流是:容量X放電C數
例如:1500MA,10C, 則最大的持續電流就是=1.5X10=15安
如果該電(dian)池長時間超過15安或(huo)以(yi)上電(dian)流工(gong)作,那么電(dian)池的(de)(de)壽(shou)命會變短(duan)、還有電(dian)池的(de)(de)充滿電(dian)壓單片(pian)4.15-4.20合適,用后的(de)(de)最(zui)低(di)電(dian)壓為(wei)單片(pian)3.7以(yi)上(切記(ji)不要(yao)過放),長期(qi)不用的(de)(de)保存電(dian)壓最(zui)好為(wei)3.9。
