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)(chong)電(dian)(dian)(dian)時(shi)間的計算有(you)個簡單的公式:Hour=1.5C/充(chong)(chong)電(dian)(dian)(dian)電(dian)(dian)(dian)流(liu)。例(li)(li)如:對1200mAH的電(dian)(dian)(dian)池充(chong)(chong)電(dian)(dian)(dian),充(chong)(chong)電(dian)(dian)(dian)器的充(chong)(chong)電(dian)(dian)(dian)電(dian)(dian)(dian)流(liu)為(wei)(wei)150mA,則時(shi)間為(wei)(wei) 1800mAH/150mA等于12小(xiao)(xiao)時(shi)。當然(ran)在很多時(shi)候并不(bu)能計算出正好的時(shi)間,我們可以挑離得(de)最(zui)近的半小(xiao)(xiao)時(shi)以方便記(ji)時(shi)。例(li)(li)如:充(chong)(chong)電(dian)(dian)(dian)器的電(dian)(dian)(dian)流(liu)為(wei)(wei) 160mA,對1400mAH的電(dian)(dian)(dian)池充(chong)(chong)電(dian)(dian)(dian),則時(shi)間為(wei)(wei)2100mAH/160mA約為(wei)(wei)13小(xiao)(xiao)時(shi),而不(bu)用計算到分。
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(jiang)電池充(chong)的(de)很滿,其次(ci)就是不用擔心過(guo)充(chong)的(de)問題,因此
進行充(chong)電(dian)的(de)(de)好(hao)處是很明顯的(de)(de),其一(yi)如前(qian)所述,涓(juan)流充(chong)電(dian)能將電(dian)池充(chong)的(de)(de)很滿,其次就是不(bu)(bu)用(yong)擔(dan)心過充(chong)的(de)(de)問題(ti),因此使用(yong)這類(lei)充(chong)電(dian)器的(de)(de)最大好(hao)處就是不(bu)(bu)用(yong)再去計算時(shi)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(zhi)一(yi)定的(de)充(chong)電(dian)時(shi)間(jian)來控制(zhi)充(chong)電(dian)終點,一(yi)般按(an)照(zhao)充(chong)入120%~150%電(dian)池標稱容量所(suo)需(xu)的(de)對應時(shi)間(jian)來控制(zhi)。標準充(chong)電(dian)一(yi)般采(cai)用時(shi)間(jian)控制(zhi)方式(shi),比如按(an)照(zhao)IEC標準測(ce)試電(dian)池容量時(shi)即采(cai)用0.1C充(chong)電(dian)16小時(shi)的(de)方法。
2)-△V控制:
當電(dian)(dian)池(chi)充滿電(dian)(dian)時(shi),電(dian)(dian)池(chi)電(dian)(dian)壓(ya)會達(da)到一個峰值,然后(hou)電(dian)(dian)壓(ya)會下降。當電(dian)(dian)壓(ya)下降一定的(de)值時(shi),終止(zhi)充電(dian)(dian)。
3)峰值電壓控制:
通過檢測電(dian)(dian)池的電(dian)(dian)壓(ya)來判斷充電(dian)(dian)的終(zhong)點,當電(dian)(dian)壓(ya)達(da)到(dao)峰值時(shi),終(zhong)止充電(dian)(dian)。
4)溫度控制:
電(dian)池在充電(dian)過(guo)程(cheng)中(zhong),溫度會(hui)逐漸(jian)升高。充滿電(dian)時,電(dian)池溫度與(yu)周(zhou)圍環境溫度的差(cha)值(zhi)會(hui)達到最大。當差(cha)值(zhi)最大時停止充電(dian)。
5)dT/dt控制:
通過檢測電池溫度相對于充(chong)電時間的(de)變化率(lv)來判(pan)斷充(chong)電的(de)終點。
6)TCO控制:
當電(dian)池溫度升高一定數值時(shi)停止充電(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(wen)度為:0度~45度
溫度為:0度~45度
備注:耐(nai)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
備注(zhu):目前最高(gao)容量是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(bei)注:重量(liang)比(bi)鎳(nie)氫電池輕30%~40%,容量(liang)高(gao)出(chu)鎳(nie)氫電池60%以上。但(dan)是不耐過充(chong),如果(guo)過充(chong)會造(zao)成溫度過高(gao)而破壞(huai)結(jie)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):鋰電(dian)(dian)的改良型,沒有(you)電(dian)(dian)池液,而改用聚合物電(dian)(dian)解質,可(ke)以(yi)做成各種形狀,比鋰電(dian)(dian)池穩(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
充電溫度為:0度~45度
溫度為:0度~45度
備注:就是一般車用電瓶(ping)(它是以(yi)6個2V串聯成12V的),免加(jia)水的電池使用壽命長(chang)達10年,但體積(ji)和重量是最大的。
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(li)如(ru):充(chong)電(dian)電(dian)池(chi)的額(e)定容量為1100mAh時(shi)(shi)(shi),即表示以1100mAh(1C)放電(dian)時(shi)(shi)(shi)間(jian)可(ke)持續1小(xiao)時(shi)(shi)(shi),如(ru)以200mA(0.2C)放電(dian)時(shi)(shi)(shi)間(jian)可(ke)持續5小(xiao)時(shi)(shi)(shi),充(chong)電(dian)也可(ke)按此對照計算(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。
根據不同(tong)(tong)的電(dian)池類型及不同(tong)(tong)的放(fang)電(dian)條件,對(dui)電(dian)池的容(rong)量和壽命的要求也不同(tong)(tong),因此(ci)規定(ding)的電(dian)池放(fang)電(dian)的終止電(dian)壓也不相(xiang)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。
電池的(de)開(kai)路(lu)電壓,會依(yi)電池正、負極與電解液的(de)材料而異,如(ru)果電池正、負極的(de)材料完全一樣(yang)(yang),那么不管電池的(de)體積(ji)有(you)多大,幾何結構如(ru)何變化(hua),起開(kai)路(lu)電壓都(dou)一樣(yang)(yang)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(fang)電深(shen)度(du)(du)的高低和(he)二次電池(chi)的充電壽命有很(hen)深(shen)的關系,當(dang)二次電池(chi)的放(fang)電深(shen)度(du)(du)越深(shen),其充電壽命就越短,因(yin)此(ci)在使用時應(ying)盡量(liang)避免(mian)深(shen)度(du)(du)放(fang)電。
過放電(Over discharge)
電(dian)(dian)池(chi)若是在放電(dian)(dian)過(guo)程(cheng)中(zhong),超過(guo)電(dian)(dian)池(chi)放電(dian)(dian)的(de)終止電(dian)(dian)壓(ya)值,還繼續放電(dian)(dian)時就(jiu)可能會造成電(dian)(dian)池(chi)內壓(ya)升高(gao),正、負極活性(xing)物質的(de)可逆性(xing)遭到損壞,使電(dian)(dian)池(chi)的(de)容量產(chan)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(tai)后,若(ruo)還繼續充(chong)電(dian),可能(neng)導致電(dian)池(chi)內壓升高、電(dian)池(chi)變(bian)形、漏夜等情況發生,電(dian)池(chi)的性(xing)能(neng)也(ye)會顯(xian)著降低和損壞(huai)。
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)體積下,鋰離子電(dian)(dian)池(chi)的(de)能量密(mi)度是(shi)鎳(nie)鎘電(dian)(dian)池(chi)的(de)2.5倍(bei),是(shi)鎳(nie)氫電(dian)(dian)池(chi)的(de)1.8倍(bei),因此在電(dian)(dian)池(chi)容量相等的(de)情況(kuang)下,鋰離子電(dian)(dian)池(chi)就會比鎳(nie)鎘、鎳(nie)氫電(dian)(dian)池(chi)的(de)體積更小,重量更輕。
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(yi)一個月為單位來計(ji)算的話,鋰離子(zi)電(dian)池自我放(fang)(fang)電(dian)約是(shi)1%-2%、鎳氫電(dian)池自我放(fang)(fang)電(dian)約3%-5%。
充電循環壽命(Cycle life)
充電電池(chi)在反復充放(fang)電使用(yong)下,電池(chi)容(rong)量回逐漸下降到(dao)初期容(rong)量的60%-80%。
記憶效應(Memory effect)
在電(dian)池充放電(dian)過程中,會在電(dian)池極(ji)板上產生(sheng)許多小氣泡(pao),時(shi)間一久(jiu),這些氣泡(pao)會減少電(dian)池極(ji)板的面積,也間接影響電(dian)池的容量。
充電電池的充放電的基本要求
新買的充(chong)電(dian)電(dian)池(chi)要充(chong)電(dian)8-12小(xiao)時(shi)?
不論任(ren)何電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)都有自(zi)(zi)我放(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)特性,所以當新充(chong)(chong)(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)到(dao)(dao)你(ni)手中(zhong)時(shi),這(zhe)中(zhong)間(jian)可能(neng)充(chong)(chong)(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)已(yi)經經過(guo)了(le)一(yi)(yi)段時(shi)間(jian)的(de)(de)自(zi)(zi)我放(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)了(le)。這(zhe)就是(shi)充(chong)(chong)(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)內部的(de)(de)化(hua)學(xue)原料已(yi)經歷一(yi)(yi)段時(shi)間(jian)沒有使用(yong)(yong),出現“鈍(dun)化(hua)”狀(zhuang)態,無法充(chong)(chong)(chong)(chong)(chong)(chong)(chong)分發揮化(hua)學(xue)反應,提供足(zu)夠的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓。在(zai)(zai)這(zhe)種情況下,第一(yi)(yi)次使用(yong)(yong)充(chong)(chong)(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)時(shi),一(yi)(yi)定要將(jiang)充(chong)(chong)(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)充(chong)(chong)(chong)(chong)(chong)(chong)(chong)滿,讓電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓恢復到(dao)(dao)原有的(de)(de)水平。事實上,如果(guo)(guo)你(ni)的(de)(de)充(chong)(chong)(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)長時(shi)間(jian)沒有使用(yong)(yong),也(ye)一(yi)(yi)樣會產生這(zhe)種“鈍(dun)化(hua)”現象,而且情況會更嚴重。最好能(neng)對(dui)充(chong)(chong)(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)進(jin)行3次充(chong)(chong)(chong)(chong)(chong)(chong)(chong)放(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)過(guo) 程,將(jiang)有助充(chong)(chong)(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)的(de)(de)活化(hua)作用(yong)(yong)。讓充(chong)(chong)(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)內部的(de)(de)化(hua)學(xue)物質可以充(chong)(chong)(chong)(chong)(chong)(chong)(chong)分發揮應有的(de)(de)效果(guo)(guo)(鎳鎘(ge)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi))。有時(shi)新購買(mai)的(de)(de)充(chong)(chong)(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi),放(fang)進(jin)充(chong)(chong)(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)的(de)(de)時(shi)候,會在(zai)(zai)還(huan)沒充(chong)(chong)(chong)(chong)(chong)(chong)(chong)飽(bao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)之前充(chong)(chong)(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)就停止充(chong)(chong)(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)了(le)。當遇見(jian)這(zhe)種問題(ti)的(de)(de)時(shi)候,你(ni)只要將(jiang)充(chong)(chong)(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)移開充(chong)(chong)(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi),然后(hou)在(zai)(zai)放(fang)進(jin)充(chong)(chong)(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)繼續充(chong)(chong)(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)。這(zhe)對(dui)于新充(chong)(chong)(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)是(shi)很正常的(de)(de)現象,不是(shi)你(ni)購買(mai)到(dao)(dao)不良的(de)(de)充(chong)(chong)(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(鎳氫、鋰離子電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi))。一(yi)(yi)般來說(shuo)對(dui)充(chong)(chong)(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)時(shi)間(jian)不能(neng)太久,最多12小時(shi)就足(zu)夠,如果(guo)(guo)一(yi)(yi)旦過(guo)度充(chong)(chong)(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)就會對(dui)充(chong)(chong)(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)造(zao)成損壞。
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
假如你用1600mAh的(de)充(chong)(chong)電(dian)電(dian)池(chi),充(chong)(chong)電(dian)器(qi)用400mA的(de)電(dian)流充(chong)(chong)電(dian),則充(chong)(chong)電(dian)時間為:1600/400*1.5=6小時(注意:這種方法不適用新購買或長期未使用的(de)充(chong)(chong)電(dian)電(dian)池(chi))
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(qing)注意看到這里時(shi),就不要利用(yong)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)器的(de)(de)(de)放(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)功(gong)能對(dui)鎳(nie)氫(qing)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)和鋰離(li)子(zi)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)進(jin)行(xing)放(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)動作(zuo),尤其是鋰離(li)子(zi)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi),由于本(ben)身的(de)(de)(de)材質因數,并不允(yun)許電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)本(ben)身能夠承受充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)器的(de)(de)(de)強制放(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)。如果你(ni)硬要對(dui)鋰離(li)子(zi)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)進(jin)行(xing)放(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian),最終(zhong)將導致電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)損壞。)另外,你(ni)使用(yong)需放(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)鎳(nie)鎘充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi),那么建議你(ni),不論使用(yong)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)的(de)(de)(de)次數是否頻繁,最好每隔(ge)兩、三個月(yue)左右就對(dui)鎳(nie)鎘充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)進(jin)行(xing)一次充(chong)(chong)放(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian),這樣可(ke)以確保鎳(nie)鎘充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)的(de)(de)(de)記憶效應對(dui)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)的(de)(de)(de)影響減到最低狀態。
電(dian)機、漿、電(dian)池(chi)、機型的相互關系
電(dian)機KV值:電(dian)機的轉速(空載(zai))=KV值X電(dian)壓(ya);例(li)如KV1000的電(dian)機在10V電(dian)壓(ya)下它的轉速(空載(zai))就是10000轉/分(fen)鐘。
電機的(de)(de)KV值(zhi)越(yue)高,提供出來的(de)(de)扭力就(jiu)越(yue)小(xiao)。所以(yi),KV值(zhi)的(de)(de)大小(xiao)就(jiu)與漿(jiang)有著密切的(de)(de)關系(xi),以(yi)下就(jiu)這點提供一下配漿(jiang)經驗:
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(pei)1060漿(jiang)與 KV3000配(pei)4530漿(jiang)它們(men)分(fen)別產(chan)生的(de)(de)推力(li)前(qian)者是后者的(de)(de)兩倍。
機型與(yu)電機、漿的關系:
一(yi)般來說:漿越大對飛機所(suo)產生的反扭力越大,所(suo)以漿的大小(xiao)與(yu)(yu)機的翼展大小(xiao)有(you)著一(yi)定關系,但漿與(yu)(yu)電機也有(you)著上(shang)面所(suo)講的關系。
例如(ru)用1060漿,機的(de)翼展(zhan)就(jiu)(jiu)得要在(zai)80CM以(yi)上為合適,不然的(de)話機就(jiu)(jiu)容(rong)易造成反(fan)扭;又如(ru)用8*6的(de)漿翼展(zhan)就(jiu)(jiu)得在(zai)60以(yi)上。
再比(bi)如:用4530漿(jiang)做翼(yi)(yi)展1米以(yi)上機(ji)行(xing)否? 是可以(yi),但飛(fei)機(ji)飛(fei)起來會很耗電(dian),因為翼(yi)(yi)展大(da)飛(fei)行(xing)的(de)阻力大(da),而4530漿(jiang)產生的(de)推力相對情況下小(上面漿(jiang)的(de)大(da)小與(yu)電(dian)流關系有講到)。
所以(yi)模友在選(xuan)(xuan)擇(ze)玩什么機(ji)(ji)型(xing)(xing)的(de)時(shi)候就要(yao)注意這4者的(de)關系,尤(you)其(qi)是新手選(xuan)(xuan)擇(ze)機(ji)(ji)型(xing)(xing),一定要(yao)看這機(ji)(ji)型(xing)(xing)翼展(zhan)大小(xiao)選(xuan)(xuan)擇(ze)配(pei)電(dian)機(ji)(ji)、漿、電(dian)池(chi),特別要(yao)注意的(de)是,不能(neng)用大漿配(pei)高KV的(de)電(dian)機(ji)(ji),否則燒電(dian)機(ji)(ji)還影響了電(dian)池(chi),有可(ke)能(neng)連電(dian)調也燒掉。
另外,有些模友誤認為,電(dian)機(ji)的(de)推力越大(da),飛機(ji)就能更(geng)加克服(fu)阻力飛得更(geng)快,這個(ge)問題就留(liu)給有興趣的(de)模友去討論一下了(le)。
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
如果該電池長(chang)時間超過15安(an)或以上(shang)電流工(gong)作,那么電池的(de)壽命會變(bian)短(duan)、還有電池的(de)充滿電壓(ya)(ya)單片4.15-4.20合適,用后的(de)最低電壓(ya)(ya)為單片3.7以上(shang)(切記不要過放),長(chang)期不用的(de)保存電壓(ya)(ya)最好為3.9。
