一、直流屏充電模塊的作用

直流屏充(chong)電模塊(kuai)的主要功(gong)能是實現AC/DC變(bian)換，還有系統(tong)控制、告警等功(gong)能。

1、自(zi)動(dong)/手(shou)動(dong)控制(zhi)(zhi)：直流屏充電(dian)模(mo)(mo)(mo)(mo)塊具有自(zi)動(dong)/手(shou)動(dong)控制(zhi)(zhi)功能，在自(zi)動(dong)工作方(fang)式下(xia)，充電(dian)模(mo)(mo)(mo)(mo)塊接收來自(zi)監(jian)控模(mo)(mo)(mo)(mo)塊的指令。通常情況下(xia)，所有合閘模(mo)(mo)(mo)(mo)塊應工作于自(zi)動(dong)狀(zhuang)態下(xia)，以實現監(jian)控模(mo)(mo)(mo)(mo)塊對電(dian)池的智能管理。手(shou)動(dong)狀(zhuang)態下(xia)，有模(mo)(mo)(mo)(mo)塊面(mian)板上的電(dian)位器來調節模(mo)(mo)(mo)(mo)塊的輸出電(dian)壓。

2、電(dian)(dian)(dian)(dian)(dian)(dian)壓調(diao)節：直(zhi)流屏充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)模塊(kuai)接受(shou)監(jian)控(kong)模塊(kuai)的(de)指(zhi)令，調(diao)節輸(shu)出(chu)電(dian)(dian)(dian)(dian)(dian)(dian)壓到(dao)設(she)定(ding)值。電(dian)(dian)(dian)(dian)(dian)(dian)壓調(diao)整范(fan)(fan)圍可(ke)以在(zai)(zai)輸(shu)出(chu)電(dian)(dian)(dian)(dian)(dian)(dian)壓下(xia)限(xian)(xian)（一(yi)般為(wei)198V/99V）和上(shang)限(xian)(xian)（一(yi)般為(wei)286V/143V）之間。限(xian)(xian)流：指(zhi)將充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)模塊(kuai)的(de)大輸(shu)出(chu)電(dian)(dian)(dian)(dian)(dian)(dian)流限(xian)(xian)制在(zai)(zai)一(yi)定(ding)的(de)范(fan)(fan)圍內，以控(kong)制電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)流，防(fang)止電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)過流充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)。充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)模塊(kuai)采用無(wu)級(ji)限(xian)(xian)流技(ji)術，即在(zai)(zai)輸(shu)出(chu)額定(ding)范(fan)(fan)圍內，可(ke)限(xian)(xian)流在(zai)(zai)任意點，分辯率為(wei)1%。

3、地址設(she)置：為(wei)了使(shi)監控模塊能(neng)夠(gou)識別各充(chong)電模塊，各個充(chong)電模塊都(dou)應該有一個地址，地址范(fan)圍為(wei)0—31。

4、信(xin)息反(fan)指(zhi)示(shi)(shi)：在充電(dian)模塊的面板上有電(dian)源指(zhi)示(shi)(shi)燈，保護指(zhi)示(shi)(shi)燈，故障指(zhi)示(shi)(shi)燈和電(dian)壓/電(dian)流顯示(shi)(shi)表頭。

5、電(dian)源指示燈(deng)：指示充電(dian)模塊內部工(gong)作(zuo)電(dian)源是否正(zheng)常。

6、保(bao)護指示(shi)燈：指示(shi)充電模塊(kuai)處(chu)于(yu)保(bao)護狀態，包括交(jiao)流輸入過(guo)/欠壓，輸入缺相(xiang)，輸出欠壓等。

7、故障指(zhi)示燈(deng)：指(zhi)充電模塊因故停止輸出(chu)，且(qie)故障因素(su)消除后，模塊仍不能恢(hui)復(fu)工作，如輸出(chu)過(guo)壓(ya)等。

8、電(dian)(dian)壓(ya)/電(dian)(dian)流(liu)顯示(shi)表頭：指示(shi)充電(dian)(dian)模塊輸(shu)出的電(dian)(dian)壓(ya)和電(dian)(dian)流(liu)，由切換開(kai)關來切換顯示(shi)。

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二、直流屏充電模塊燒壞的原因

1、模(mo)塊過(guo)電壓或欠電壓，都是(shi)有(you)損于蓄電池組，如果自動(dong)部分故障的(de)話，建議(yi)使用模(mo)塊輸出，電壓過(guo)高對后面(mian)模(mo)塊過(guo)電壓是(shi)不(bu)正(zheng)常的(de)情況，應及時找出原因。

2、在(zai)正常情況下(xia)，充(chong)電(dian)(dian)(dian)(dian)(dian)模塊所帶的(de)負(fu)荷(he)是直流負(fu)荷(he)與(yu)蓄電(dian)(dian)(dian)(dian)(dian)池(chi)(chi)浮充(chong)電(dian)(dian)(dian)(dian)(dian)流。蓄電(dian)(dian)(dian)(dian)(dian)池(chi)(chi)的(de)浮充(chong)電(dian)(dian)(dian)(dian)(dian)流通(tong)常較小，但如果電(dian)(dian)(dian)(dian)(dian)池(chi)(chi)組電(dian)(dian)(dian)(dian)(dian)壓過低，投(tou)入合閘(zha)母線開關的(de)瞬間充(chong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)流非(fei)常大(da)，對(dui)充(chong)電(dian)(dian)(dian)(dian)(dian)模塊也是會帶來沖擊(ji)的(de)。

3、如果并(bing)聯運行的充電(dian)模塊的輸出均流(liu)嚴重不平衡很大可能會會帶來(lai)接(jie)連全部燒掉(diao)的惡性后果。

4、防塵網、防塵罩沒有及時清理(li)。

5、通風情況不好，導致柜體(ti)溫(wen)度(du)高。

6、人為的改變了其參數，沒有打到主(zhu)動檔位。

7、人為因素。在直流屏投入使用時，當環(huan)境很差或有(you)潮濕的情況下沒(mei)有(you)對其進行正常的維護導致的。

8、在使用中沒有及(ji)時測得模塊的輸(shu)出電(dian)壓(ya)，之后導致輸(shu)出過壓(ya)，欠壓(ya)的情況。