對(dui)于普(pu)通(tong)的(de)(de)(de)民用移動通(tong)訊(xun)，如(ru)今手(shou)機已經成為最常用的(de)(de)(de)工具(ju)，無(wu)論(lun)是傳(chuan)統的(de)(de)(de)2G或現在興起的(de)(de)(de)3G無(wu)線(xian)通(tong)訊(xun)，都是通(tong)過信(xin)號發射(she)(she)塔(ta)的(de)(de)(de)中轉連接來傳(chuan)遞微波信(xin)號，所以(yi)信(xin)號發射(she)(she)塔(ta)成為城市，鄉村(cun)常見的(de)(de)(de)基礎設施，給人們的(de)(de)(de)生活和工作帶來非常大的(de)(de)(de)方便，人們也越(yue)來越(yue)離不開它(ta)。

　　一、移動通訊微波發射塔后備電源電池要求：

　　信號發射塔主要由以下幾部分構成：發信設備、收信設備、天線饋線系統、電源設備以及保障通信線路正常運行和無人維護所需的監測控制設備。電源設備除包含(han)交(jiao)流直接供電(dian)(dian)(dian)(dian)(dian)驅動(dong)信號塔(ta)外(wai)還包含(han)UPS后備電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)驅動(dong)系(xi)統(tong)(tong)，以(yi)防止停電(dian)(dian)(dian)(dian)(dian)導致系(xi)統(tong)(tong)無(wu)法工作。早期的(de)(de)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)大多采用鉛酸電(dian)(dian)(dian)(dian)(dian)池作為(wei)后備電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)的(de)(de)供電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)。由于鉛酸不環保，且能(neng)(neng)量比低(di)，體(ti)積大，壽命(ming)短等缺(que)點，現在(zai)新(xin)建(jian)或(huo)改建(jian)升級的(de)(de)基站(zhan)都逐漸開始采用鋰(li)離子電(dian)(dian)(dian)(dian)(dian)池作為(wei)基站(zhan)后備電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)的(de)(de)供電(dian)(dian)(dian)(dian)(dian)系(xi)統(tong)(tong)。基于上(shang)述(shu)問題，我們客戶要求(qiu)選用鋰(li)電(dian)(dian)(dian)(dian)(dian)池作為(wei)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)的(de)(de)主(zhu)體(ti)，后備電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)系(xi)統(tong)(tong)在(zai)停電(dian)(dian)(dian)(dian)(dian)后能(neng)(neng)支持整(zheng)個發(fa)射系(xi)統(tong)(tong)工作兩個小時以(yi)上(shang)，且能(neng)(neng)滿(man)足(zu)系(xi)統(tong)(tong)在(zai)野外(wai)長期工作的(de)(de)要求(qiu)。

　　根據客戶整個發射系統消耗功率和轉換效率，我們計算出電池組需48V 65Ah就能滿足客戶的工作時間要求。由于整組電池電壓高、整體電池容量比較大，環境溫度比較高，且為保證整個系統的穩定性，在鋰電池電芯方(fang)面我們采用日(ri)本(ben)進口鋰電池芯，該電芯的整體一(yi)致性高(gao)，每顆電芯都內(nei)置多重保護，包含(han)防爆閥，PTC等(deng)。

　　電源系(xi)統PCM保(bao)護(hu)(hu)(hu)系(xi)統單元(yuan)包(bao)含：1 設置檢測(ce)單串電池的過充，過放(fang)保(bao)護(hu)(hu)(hu)；2 整組電池溫度保(bao)護(hu)(hu)(hu)，過流保(bao)護(hu)(hu)(hu)，短路保(bao)護(hu)(hu)(hu)；3 單串電池之間(jian)的平衡系(xi)統；

　　電池電量檢(jian)測部分(fen)包含檢(jian)測系統(tong)和顯(xian)示系統(tong)。檢(jian)測采用(yong)電流電壓運算的(de)(de)方(fang)式，顯(xian)示和檢(jian)測準確度(du)非常高，配合LCD顯(xian)示屏動態直觀的(de)(de)全(quan)程檢(jian)測顯(xian)示電池的(de)(de)充放電狀(zhuang)態。

　　二、。移動通訊(xun)微(wei)波發射塔后備電(dian)源電(dian)池設計(ji)方案：

　　1）電池組設計參數：客戶要求1000W的(de)交流供電系統(tong)能(neng)工作兩個(ge)小時，我們(men)根據UPS的(de)轉換效(xiao)率和配合電壓(ya)，計算(suan)出電池的(de)電壓(ya)和容量為(wei)48.1V/65Ah，能(neng)滿(man)足系統(tong)滿(man)載工作150分鐘。

　　2）保護板（PCM）設(she)計(ji)參數：具備單節過(guo)充，過(guo)放，溫度，過(guo)流，短路(lu)保護等。具體保護參數如下：

　　1、單(dan)節(jie)過充保護電壓：4.22±0.25V

　　2、單節(jie)過充恢復電壓(ya)：4.15±0.50V

　　3、單節過放保護電壓：3.00±0.10V

　　4、單節過放恢復電(dian)壓：3.30±0.10V

　　5、組合電池過流保護值（10ms）：70A

　　6、充電平(ping)衡(heng)電流：50±10mA

　　7、充電平衡電壓：4.18±25mV

　　8、電池溫(wen)度(du)保(bao)護范圍（可恢(hui)復）：-20~60度(du)

　　9、成品(pin)電池還(huan)具備(bei)短路保(bao)護

　　3）電(dian)(dian)(dian)(dian)(dian)(dian)池電(dian)(dian)(dian)(dian)(dian)(dian)量(liang)(liang)監控(kong)系統(tong)（PCM）設(she)計功能：采用智(zhi)能的(de)專用芯片，配(pei)合(he)LCD顯(xian)示屏：可根據需要實時通(tong)過按鍵來(lai)設(she)置顯(xian)示參數，顯(xian)示部分(fen)包(bao)含：電(dian)(dian)(dian)(dian)(dian)(dian)池當前(qian)容量(liang)(liang)、當前(qian)容量(liang)(liang)百分(fen)比(bi)，當前(qian)電(dian)(dian)(dian)(dian)(dian)(dian)池電(dian)(dian)(dian)(dian)(dian)(dian)壓、充電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)流、放電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)流，放電(dian)(dian)(dian)(dian)(dian)(dian)剩(sheng)余(yu)時間，電(dian)(dian)(dian)(dian)(dian)(dian)量(liang)(liang)百分(fen)比(bi)（RSOC）以及絕對剩(sheng)余(yu)電(dian)(dian)(dian)(dian)(dian)(dian)量(liang)(liang)百分(fen)比(bi)（ASOC）。

　　4）電池整體(ti)結(jie)構設計(ji)要(yao)求：由于基站的分布區域廣，且是放置野外(wai)(wai)，除考慮與電池的絕(jue)緣(yuan)外(wai)(wai)，還需考慮防潮，不易老(lao)化變質等，所以外(wai)(wai)殼(ke)結(jie)構采用玻(bo)纖板(ban)作(zuo)為(wei)主體(ti)。由于電芯(xin)組合數量比(bi)較多(duo)，需考慮隔離和散熱的問題，我們采用電池專用工程塑膠支(zhi)架作(zuo)為(wei)鋰電池組固(gu)定和隔離的主體(ti)。

　　5）二次保護：整組電(dian)池(chi)加設異常(chang)過(guo)流(liu)(liu)短路保護保險絲，以防止(zhi)電(dian)池(chi)異常(chang)和保護板(ban)失效導致電(dian)流(liu)(liu)過(guo)大。在PCM系(xi)統異常(chang)后產生過(guo)大電(dian)流(liu)(liu)時(shi)保險絲會切斷整個(ge)電(dian)池(chi)組的輸(shu)出回路，且(qie)不可恢復(fu)。

　　6）鋰(li)電(dian)(dian)(dian)池(chi)(chi)電(dian)(dian)(dian)芯(xin)(xin)：采用日本原裝進(jin)口(kou)電(dian)(dian)(dian)芯(xin)(xin)，18650鋰(li)電(dian)(dian)(dian)池(chi)(chi)電(dian)(dian)(dian)芯(xin)(xin)/18650/2500mAh/3.7V，該電(dian)(dian)(dian)芯(xin)(xin)具備(bei)好的安全性(xing)和一(yi)致性(xing)，從而保(bao)證了整個電(dian)(dian)(dian)池(chi)(chi)組的可靠性(xing)。

　　三、移動(dong)通訊微波發射塔后備電源設計方框圖：