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一種智能型全自動快速充電機的設計

2019/4/3 9:10:35??????點擊:
1 充電機的現狀
    目(mu)前(qian),礦(kuang)用(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)車蓄(xu)(xu)(xu)(xu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)的(de)(de)(de)(de)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian),無論是(shi)恒(heng)(heng)(heng)流(liu)(liu)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)、恒(heng)(heng)(heng)壓充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)或(huo)是(shi)先恒(heng)(heng)(heng)流(liu)(liu)再恒(heng)(heng)(heng)壓的(de)(de)(de)(de)分(fen)段式(shi)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian),都有(you)一個共同(tong)的(de)(de)(de)(de)問題,就(jiu)是(shi)這(zhe)(zhe)種小電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)慢(man)充(chong)(chong)(chong)(chong)方(fang)式(shi),蓄(xu)(xu)(xu)(xu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)初充(chong)(chong)(chong)(chong)需(xu)70小時(shi)以上,進(jin)行普通充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)也(ye)需(xu)10小時(shi)以上,這(zhe)(zhe)種充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)方(fang)式(shi)在充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)過程的(de)(de)(de)(de)初期,充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)遠小于(yu)蓄(xu)(xu)(xu)(xu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)可接受的(de)(de)(de)(de)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu),因而(er)拉長了充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)時(shi)間,造(zao)成電(dian)(dian)(dian)(dian)(dian)(dian)(dian)能的(de)(de)(de)(de)浪費(fei)。而(er)在充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)過程的(de)(de)(de)(de)后期,充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)又大于(yu)蓄(xu)(xu)(xu)(xu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)可接受的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu),蓄(xu)(xu)(xu)(xu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)內部溫度升(sheng)高,產生大量(liang)析氣,并形成內部硫(liu)化結晶(jing),大大縮短了蓄(xu)(xu)(xu)(xu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)的(de)(de)(de)(de)循環使用(yong)壽命,甚至(zhi)有(you)可能永久性地(di)損(sun)壞電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)。這(zhe)(zhe)不僅造(zao)成了浪費(fei),也(ye)增加(jia)了對(dui)環境(jing)的(de)(de)(de)(de)污染。同(tong)時(shi),這(zhe)(zhe)種傳統充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)采用(yong)變壓器(qi)變壓整流(liu)(liu),可控(kong)(kong)硅控(kong)(kong)制(zhi)的(de)(de)(de)(de)途徑,技術落后,設備笨重,可靠性也(ye)差。
    美(mei)國科學家(jia)馬(ma)斯(si)通(tong)過(guo)對鉛酸蓄(xu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)的(de)(de)大(da)量試驗(yan)研(yan)究,提(ti)出了一條鉛酸蓄(xu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)可(ke)接受的(de)(de)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)曲線。在(zai)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)過(guo)程(cheng)的(de)(de)初(chu)期,蓄(xu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)可(ke)接受的(de)(de)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)很大(da)。隨著充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)過(guo)程(cheng)的(de)(de)延(yan)續,充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)逐漸(jian)按指數規律減小。讓充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)機的(de)(de)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)按這(zhe)樣一條理(li)想電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)曲線變(bian)化(hua)(hua)(hua),就可(ke)以(yi)(yi)最大(da)限度(du)的(de)(de)提(ti)高(gao)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)效率。同時(shi)(shi),試驗(yan)表明,采用(yong)脈(mo)(mo)沖式的(de)(de)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)方式是(shi)消(xiao)除各種極(ji)化(hua)(hua)(hua)現象(xiang),提(ti)高(gao)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)速度(du),延(yan)長蓄(xu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)循(xun)環使(shi)用(yong)壽(shou)命的(de)(de)有效途徑。這(zhe)種充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)方式是(shi)在(zai)對蓄(xu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)過(guo)程(cheng)中適時(shi)(shi)暫停充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian),并(bing)適當加入放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)脈(mo)(mo)沖。當電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)停止時(shi)(shi),電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)的(de)(de)歐姆極(ji)化(hua)(hua)(hua)消(xiao)失(shi),濃差極(ji)化(hua)(hua)(hua)和電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)化(hua)(hua)(hua)學極(ji)化(hua)(hua)(hua)減弱(ruo)。若能(neng)在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)過(guo)程(cheng)中讓其反向放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian),則極(ji)化(hua)(hua)(hua)現象(xiang)迅速消(xiao)失(shi),電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)內部溫度(du)也會因放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)而(er)得(de)到(dao)有效控制。脈(mo)(mo)沖電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)充(chong)(chong)(chong)放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)對電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)極(ji)板(ban)有加強其韌性的(de)(de)效果,可(ke)以(yi)(yi)大(da)大(da)提(ti)高(gao)蓄(xu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)的(de)(de)循(xun)環使(shi)用(yong)壽(shou)命。同時(shi)(shi),由于電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)極(ji)化(hua)(hua)(hua)現象(xiang)的(de)(de)消(xiao)失(shi),脈(mo)(mo)沖電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)又可(ke)以(yi)(yi)深層次地激活電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)內部的(de)(de)活性物(wu)質,從(cong)而(er)大(da)幅度(du)提(ti)高(gao)蓄(xu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)的(de)(de)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)有效容量。
    當前(qian),帶有(you)自適應(ying)控制技(ji)術的(de)(de)脈沖式充電(dian)機(ji)已成為礦用(yong)電(dian)機(ji)車(che)充電(dian)機(ji)的(de)(de)主要發展方向。因此,開發新一代的(de)(de)智能快(kuai)速充電(dian)機(ji)不(bu)僅可以提高充電(dian)效率,降低使用(yong)單(dan)位的(de)(de)運營成本,同時也具有(you)節能、環(huan)保(bao)等諸方面(mian)的(de)(de)社會意義。
2 一種智能型全自動快(kuai)速(su)充電機
2.1 電氣原理
    充電機電氣原理框圖見圖1。電氣原理分為三(san)大部分,即逆(ni)變主通道、檢測控制單(dan)元和對(dui)話單(dan)元(顯示操作單(dan)元)。
    逆變主通道將380 V交流電(dian)(dian)(dian)源變換為可(ke)對電(dian)(dian)(dian)池(chi)進行充電(dian)(dian)(dian)的可(ke)控直(zhi)流電(dian)(dian)(dian)源,由輸入回(hui)路(lu)、工頻整(zheng)流濾波電(dian)(dian)(dian)路(lu)、移相全橋(ZVT-PWM)變換電(dian)(dian)(dian)路(lu)、高頻整(zheng)流電(dian)(dian)(dian)路(lu)濾波電(dian)(dian)(dian)路(lu)、輸出回(hui)路(lu)及放電(dian)(dian)(dian)回(hui)路(lu)組成。
    輸(shu)入(ru)回路即供電(dian)回路,在非運行狀態時,可切斷主通道電(dian)源。輸(shu)入(ru)回路設(she)計有軟啟動功能,避免啟動沖擊對回路元件(jian)造成的損傷。
    工頻整流濾波電(dian)路將(jiang)380 V交(jiao)流電(dian)整流為約550 V的直流電(dian),如圖2所示。
    移相全橋(qiao)(qiao)功(gong)率變(bian)(bian)換(huan)電(dian)路是主通(tong)道(dao)的(de)核心,完(wan)成從直流(liu)(liu)到(dao)交流(liu)(liu)再到(dao)直流(liu)(liu)的(de)變(bian)(bian)換(huan)。如圖3所示。通(tong)過改(gai)變(bian)(bian)橋(qiao)(qiao)臂IGBT控制信號的(de)相位,來改(gai)變(bian)(bian)耦(ou)合到(dao)高(gao)頻變(bian)(bian)壓器的(de)波形寬度,從而改(gai)變(bian)(bian)輸出給被充(chong)電(dian)池(chi)的(de)電(dian)流(liu)(liu)、電(dian)壓值。
    高(gao)頻(pin)整(zheng)流(liu)濾(lv)波電(dian)(dian)(dian)路將高(gao)頻(pin)變壓器副邊(bian)的高(gao)頻(pin)交流(liu)電(dian)(dian)(dian),整(zheng)流(liu)為電(dian)(dian)(dian)池充(chong)電(dian)(dian)(dian)要求的平(ping)滑(hua)直(zhi)流(liu)電(dian)(dian)(dian)。
    輸出開關電路在非(fei)充電狀態下保證(zheng)主通(tong)道與被(bei)充電池的隔離,防止發生(sheng)反接造成的危(wei)險(xian)。
    放電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)路實(shi)現"充(chong)-停(ting)-放-停(ting)-充(chong)"的(de)(de)充(chong)電(dian)(dian)(dian)(dian)方式,從而改善電(dian)(dian)(dian)(dian)池的(de)(de)充(chong)電(dian)(dian)(dian)(dian)效果(guo)和恢復電(dian)(dian)(dian)(dian)池的(de)(de)性能(neng)(neng)。此外(wai),還可以對電(dian)(dian)(dian)(dian)能(neng)(neng)未消耗(hao)完的(de)(de)待充(chong)電(dian)(dian)(dian)(dian)池進(jin)行放電(dian)(dian)(dian)(dian)處理。
    控制單元接收來自對話單元給定(ding)的(de)參數(shu)和(he)命令,并(bing)通過對主通道各相關參數(shu)的(de)實時檢測,動態控制主通道的(de)工作,實現要求的(de)充電(dian)功能和(he)充電(dian)進程。同時為設備提供多種保護(hu)。
    控(kong)(kong)制(zhi)單元采(cai)(cai)用(yong)最新嵌入式(shi)內核芯片ARM設計。采(cai)(cai)集模擬量(liang)為(wei):4路溫度、輸(shu)出電流(liu)(liu)、放(fang)電電流(liu)(liu)、輸(shu)出電壓和(he)電池電壓。控(kong)(kong)制(zhi)量(liang)為(wei):輸(shu)入開(kai)關、軟啟動、輸(shu)出開(kai)關、輸(shu)出電容(rong)放(fang)電和(he)ZVT-PWM變換控(kong)(kong)制(zhi)等
    控(kong)(kong)制(zhi)單元(yuan)與對話(hua)單元(yuan)之間為(wei)RS232全(quan)雙工通信。控(kong)(kong)制(zhi)單元(yuan)接(jie)收來自對話(hua)單元(yuan)的各種控(kong)(kong)制(zhi)命(ming)令(ling),并向對話(hua)單元(yuan)實(shi)時發送(song)數(shu)據。
    對(dui)話(hua)單元是整(zheng)機操(cao)(cao)作平臺,接(jie)收(shou)并實(shi)現操(cao)(cao)作者的各種(zhong)工作指令,完成各種(zhong)工作方式(shi)的參(can)數(shu)設定、記憶(yi)及(ji)各種(zhong)動靜態參(can)數(shu)顯示。對(dui)話(hua)單元由控制(zhi)芯片、LCM、參(can)數(shu)存(cun)儲器和操(cao)(cao)作按鍵組成。
    當充(chong)電機進(jin)入工(gong)作狀態時,設備首先進(jin)行(xing)自檢。自檢項(xiang)目包括充(chong)電電池是否(fou)反接、主通道各部分是否(fou)正常(chang)。
    自檢(jian)結果將發送給對話單元。
    自檢正常時,設備(bei)處于待命(ming)狀態,準備(bei)接收由對話單元發來的各種命(ming)令(ling)及(ji)參數,并(bing)按(an)要求開始(shi)相應的工作進程。
    自檢(jian)故障(zhang)時,對(dui)話單元顯(xian)示故障(zhang)編(bian)號,等待檢(jian)修。
2.2 工作方式
    智能型全自動快速充電機(ji)設計了三種工作方(fang)(fang)式:便(bian)捷(jie)方(fang)(fang)式、智能方(fang)(fang)式和放電方(fang)(fang)式。
    便捷方式(shi)。一種(zhong)常(chang)規(gui)的恒(heng)流(liu)(liu)(liu)限(xian)壓定時(shi)充電(dian)(dian)工作方式(shi),此方式(shi)工作時(shi),充電(dian)(dian)機以設(she)定電(dian)(dian)流(liu)(liu)(liu)向負(fu)載電(dian)(dian)瓶恒(heng)流(liu)(liu)(liu)充電(dian)(dian),當充電(dian)(dian)電(dian)(dian)壓達到(dao)限(xian)制電(dian)(dian)壓時(shi),電(dian)(dian)壓不(bu)(bu)再上升,而充電(dian)(dian)電(dian)(dian)流(liu)(liu)(liu)逐漸(jian)減小。當充電(dian)(dian)時(shi)間(jian)達到(dao)設(she)定時(shi)間(jian)時(shi),充電(dian)(dian)機自動結束充電(dian)(dian)過程。此種(zhong)模式(shi)充電(dian)(dian),電(dian)(dian)流(liu)(liu)(liu)不(bu)(bu)宜(yi)超過100 A,否則電(dian)(dian)瓶不(bu)(bu)易(yi)充滿,且析氣(qi)量大。
    智能方式。一種針(zhen)對不同規格(ge)型號的(de)電(dian)(dian)池采取不同整定(ding)參數充電(dian)(dian)的(de)工作方式。而對每一種電(dian)(dian)池又有三種充電(dian)(dian)模(mo)式,即初充模(mo)式、恒流模(mo)式和快速模(mo)式。
    a.初(chu)充(chong)(chong)模(mo)式。為(wei)(wei)兩(liang)階(jie)(jie)段的(de)(de)定(ding)電(dian)流、定(ding)時間的(de)(de)自動充(chong)(chong)電(dian)方式。主要為(wei)(wei)新電(dian)池(chi)初(chu)充(chong)(chong)設(she)計(ji)。此模(mo)式充(chong)(chong)電(dian),兩(liang)階(jie)(jie)段電(dian)流均不宜過大,
    b.恒(heng)流(liu)模式。開始充(chong)電(dian)時(shi)為(wei)恒(heng)流(liu)工作,當電(dian)壓(ya)升高到設(she)定(ding)值時(shi)轉入穩壓(ya)工作,當充(chong)電(dian)時(shi)間(jian)達到設(she)定(ding)時(shi)間(jian)或充(chong)電(dian)容量滿時(shi)自動停止(zhi)充(chong)電(dian),這是基本(ben)進程(cheng)。當充(chong)電(dian)時(shi)間(jian)足夠長時(shi),基本(ben)進程(cheng)會疊加周(zhou)期性的放(fang)電(dian)脈沖,疊加后的充(chong)電(dian)過程(cheng)為(wei)"充(chong)-停-放(fang)-停-充(chong)"。
    c. 快速(su)(su)模(mo)式(shi)。快速(su)(su)模(mo)式(shi)包含三個(ge)順序階段(duan):恒(heng)(heng)(heng)流(liu)、恒(heng)(heng)(heng)壓(ya)(ya)和小電(dian)(dian)(dian)(dian)(dian)流(liu)維(wei)持。恒(heng)(heng)(heng)流(liu)段(duan)以(yi)大(da)電(dian)(dian)(dian)(dian)(dian)流(liu)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)為(wei)特征,當(dang)(dang)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)量達(da)到設(she)(she)定容量或充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)時(shi)(shi)(shi)間(jian)(jian)達(da)到設(she)(she)定值或電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)升至限定值時(shi)(shi)(shi)結束,轉入恒(heng)(heng)(heng)壓(ya)(ya)段(duan)。恒(heng)(heng)(heng)流(liu)段(duan)可使電(dian)(dian)(dian)(dian)(dian)瓶(ping)恢(hui)復(fu)80%左(zuo)右的(de)(de)(de)(de)容量。恒(heng)(heng)(heng)壓(ya)(ya)段(duan)則維(wei)持恒(heng)(heng)(heng)流(liu)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)結束時(shi)(shi)(shi)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya),而電(dian)(dian)(dian)(dian)(dian)流(liu)逐漸(jian)減(jian)小,當(dang)(dang)恒(heng)(heng)(heng)壓(ya)(ya)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)達(da)到設(she)(she)定時(shi)(shi)(shi)間(jian)(jian)時(shi)(shi)(shi),自動轉入維(wei)持充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)過(guo)程(cheng)(cheng)。快速(su)(su)模(mo)式(shi)和恒(heng)(heng)(heng)流(liu)模(mo)式(shi)一樣,當(dang)(dang)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)時(shi)(shi)(shi)間(jian)(jian)足(zu)夠長時(shi)(shi)(shi),基(ji)本進程(cheng)(cheng)會(hui)疊加(jia)周期性(xing)的(de)(de)(de)(de)放(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)脈沖(chong),疊加(jia)后的(de)(de)(de)(de)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)過(guo)程(cheng)(cheng)為(wei)"充(chong)(chong)(chong)(chong)-停(ting)(ting)-放(fang)(fang)(fang)-停(ting)(ting)-充(chong)(chong)(chong)(chong)"。恒(heng)(heng)(heng)壓(ya)(ya)過(guo)程(cheng)(cheng)結束時(shi)(shi)(shi),電(dian)(dian)(dian)(dian)(dian)瓶(ping)容量可恢(hui)復(fu)95%以(yi)上。當(dang)(dang)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)進程(cheng)(cheng)轉入維(wei)持充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)過(guo)程(cheng)(cheng)時(shi)(shi)(shi),脈沖(chong)疊加(jia)停(ting)(ting)止(zhi)。放(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)方式(shi)是為(wei)人(ren)工對電(dian)(dian)(dian)(dian)(dian)瓶(ping)放(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)而設(she)(she)計的(de)(de)(de)(de)功(gong)能。進入該方式(shi)時(shi)(shi)(shi),電(dian)(dian)(dian)(dian)(dian)瓶(ping)按照設(she)(she)定電(dian)(dian)(dian)(dian)(dian)流(liu)放(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian),當(dang)(dang)電(dian)(dian)(dian)(dian)(dian)瓶(ping)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)降到設(she)(she)定值時(shi)(shi)(shi)自動停(ting)(ting)止(zhi)放(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)。
2.3 技(ji)術(shu)性能和參數
    1)額定輸入(ru)電壓(ya):380 VAC±10%50 Hz;
    2)額定(ding)輸(shu)出功率(lv):30 kW;
    3)直流(liu)輸(shu)出電流(liu):5-200 A;
    4)直流輸出電壓:30~300 V;
    5)工作(zuo)模式(shi):三種(zhong),便捷充(chong)(chong)電、智(zhi)(zhi)能(neng)充(chong)(chong)電和自動放電。智(zhi)(zhi)能(neng)充(chong)(chong)電模式(shi)分為三種(zhong)充(chong)(chong)電方式(shi),即初充(chong)(chong)方式(shi)、恒流(liu)方式(shi)和快速方式(shi);
    6)具(ju)有自(zi)檢功能;
    7)具有電池反接保護功能;
    8)具有過流、過載(zai)、短路和超溫等保護功能;
3 結語
    本設計以大功率IGBT為核心,嵌入先進的智能控制系統,在充電過程中實時檢測電池的充電情況,自動調整充電參數,實現最佳的模式控制。通過"充-停-放-停-充"的脈沖充電方式,實現了可控的去極化功能和最佳的充電工藝要求,提高了充電效率和電池的充電容量,延長了電池的使用壽命,同時設備還具有自檢及多種保護功能,有著廣闊的應用前景。上(shang)海施能電器設備(bei)有(you)限公司(si)始建于1984年,上海市高新技術企業,中國工業車輛優秀配套供應商,上海電器行業名優產品,主要生產工頻系列充電機,高頻系列充電機,鋰電池充電機系列放電機系列充放電機等電器產品。
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