本(ben)文設計了一種(zhong)多(duo)功能、高(gao)效、低(di)功耗、安(an)全的(de)隨(sui)身移動電(dian)源，以(yi)滿足戶外(wai)需求(qiu)，將(jiang)有很大的(de)實用價值(zhi)。

　　本文論述的電路系統設計由五部分組成：鋰芯容量指示電路、電芯保護電路、電充電管理路、DC-DC升壓電路和功能擴展電路。
多功能隨身電源的系統設計

　　鋰芯容量指示電路由XC61CC系列的電壓監控芯片組成。電芯保護電路由過充保護、過放保護、過溫保護三部分組成，HAT2027、R5402、自恢復保險絲構建了三重保護，使鋰芯安全性大大增強。充電管理電路采用了CN3066，將充電過程分為涓流充電、恒流充電、恒壓充電和維護充電四個部分，使移動隨身電源能夠最大程度地儲備能量。DC-DC升壓電路采用了MAX1771集成芯片，可將鋰芯容量在安全范圍內最大限度釋放，達到對多種數碼設備供電的目的。功能擴展涵蓋了戶外活動所涉及的常見需求，具有應急夜間高亮照、戶外防盜安全警報、野營驅蚊等功能。多功能隨身電源的電路實現
 

DC-DC升壓電路

　　本系(xi)統(tong)中，DC-DC升(sheng)壓(ya)電(dian)(dian)(dian)(dian)路(lu)主要由MAX1771構成(cheng)，該控(kong)制(zhi)(zhi)(zhi)(zhi)器采(cai)用(yong)獨特的(de)(de)(de)(de)控(kong)制(zhi)(zhi)(zhi)(zhi)方案，結合(he)PFM（脈(mo)沖頻率(lv)調(diao)制(zhi)(zhi)(zhi)(zhi)）及PWM（脈(mo)沖寬度(du)調(diao)制(zhi)(zhi)(zhi)(zhi)）的(de)(de)(de)(de)優越性(xing)，提供(gong)一(yi)(yi)個高(gao)效、較(jiao)(jiao)(jiao)寬電(dian)(dian)(dian)(dian)壓(ya)調(diao)節范圍(wei)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)源(yuan)。前者具有較(jiao)(jiao)(jiao)小(xiao)的(de)(de)(de)(de)靜態電(dian)(dian)(dian)(dian)流，負載(zai)小(xiao)的(de)(de)(de)(de)情(qing)況下(xia)效率(lv)較(jiao)(jiao)(jiao)高(gao)，但紋波較(jiao)(jiao)(jiao)大(da)。后者在(zai)負載(zai)大(da)的(de)(de)(de)(de)情(qing)況下(xia)具有較(jiao)(jiao)(jiao)高(gao)的(de)(de)(de)(de)效率(lv)，噪聲小(xiao)。該控(kong)制(zhi)(zhi)(zhi)(zhi)器采(cai)用(yong)的(de)(de)(de)(de)是一(yi)(yi)種改進型(xing)的(de)(de)(de)(de)限(xian)流PFM控(kong)制(zhi)(zhi)(zhi)(zhi)方式，控(kong)制(zhi)(zhi)(zhi)(zhi)電(dian)(dian)(dian)(dian)路(lu)限(xian)制(zhi)(zhi)(zhi)(zhi)電(dian)(dian)(dian)(dian)感(gan)充電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)流，使其(qi)不超過某一(yi)(yi)峰(feng)值電(dian)(dian)(dian)(dian)流。既保持了傳統(tong)PFM的(de)(de)(de)(de)低靜態電(dian)(dian)(dian)(dian)流，同時在(zai)較(jiao)(jiao)(jiao)大(da)負載(zai)的(de)(de)(de)(de)情(qing)況下(xia)，也具有很高(gao)的(de)(de)(de)(de)效率(lv)。而且由于(yu)限(xian)制(zhi)(zhi)(zhi)(zhi)了峰(feng)值電(dian)(dian)(dian)(dian)流，采(cai)用(yong)很小(xiao)體積(ji)的(de)(de)(de)(de)外圍(wei)元件就可獲得滿意的(de)(de)(de)(de)輸(shu)出紋波，這樣便(bian)于(yu)降(jiang)低電(dian)(dian)(dian)(dian)路(lu)成(cheng)本及尺寸。

　　如圖2所示，將4腳(jiao)接地，可使其工作在閉環狀態。芯(xin)片(pian)由引腳(jiao)2上的(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)供電(dian)(dian)(dian)(dian)(dian)(dian)，同時也是(shi)輸出(chu)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)。輸入電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)可以(yi)(yi)進行從(cong)2V到輸出(chu)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)的(de)變化(hua)。外接MOS管(guan)柵極(ji)1腳(jiao)上的(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)，從(cong)輸出(chu)電(dian)(dian)(dian)(dian)(dian)(dian)平到零電(dian)(dian)(dian)(dian)(dian)(dian)平跳變，這(zhe)樣可以(yi)(yi)提供更人的(de)柵極(ji)驅動(dong)，從(cong)而減(jian)小外接MOS管(guan)的(de)開(kai)啟(qi)電(dian)(dian)(dian)(dian)(dian)(dian)阻。

　　MAX1771外接MOS管平時(shi)是關(guan)(guan)閉的，此時(shi)電(dian)(dian)(dian)感儲能。關(guan)(guan)閉期間，MAX1771會(hui)檢測外部(bu)輸入電(dian)(dian)(dian)壓(ya)，一(yi)旦降(jiang)低到了一(yi)定限度，MAX1771就會(hui)開(kai)啟外部(bu)MOS管，電(dian)(dian)(dian)感釋放(fang)能量，重新提供驅動電(dian)(dian)(dian)壓(ya)。開(kai)關(guan)(guan)頻率隨(sui)負載電(dian)(dian)(dian)流和輸入電(dian)(dian)(dian)壓(ya)而定。5V電(dian)(dian)(dian)壓(ya)通過兩個反饋電(dian)(dian)(dian)阻(zu)分壓(ya)得到。

　　此外，續流(liu)二極管選用(yong)肖特基二極管SS34，該器件(jian)正(zheng)向導通(tong)電(dian)壓小，響(xiang)應時間短(duan)。

鋰芯容量指示電路

　　本系(xi)統電(dian)(dian)(dian)路設計采用了一種比較簡單且實(shi)用的(de)方法，即通過測試鋰芯電(dian)(dian)(dian)池(chi)放電(dian)(dian)(dian)的(de)時間電(dian)(dian)(dian)壓(ya)特(te)性曲線，選取整個放電(dian)(dian)(dian)過程(cheng)的(de)四個位點電(dian)(dian)(dian)壓(ya)，用電(dian)(dian)(dian)壓(ya)來估算電(dian)(dian)(dian)池(chi)的(de)容量。

　　如圖3所示(shi)(shi)，當(dang)按下(xia)電(dian)(dian)(dian)壓容量(liang)指示(shi)(shi)的(de)功能(neng)按鍵，鋰芯(xin)(xin)的(de)電(dian)(dian)(dian)池(chi)電(dian)(dian)(dian)壓會加到XC61系(xi)列芯(xin)(xin)片(pian)的(de)VIN與VSS引腳(jiao)上。當(dang)電(dian)(dian)(dian)壓高丁(ding)4.1V，四個(ge)(ge)芯(xin)(xin)片(pian)同(tong)時(shi)(shi)工作(zuo)，電(dian)(dian)(dian)池(chi)與限流(liu)電(dian)(dian)(dian)阻、LED發(fa)光(guang)管(guan)形成(cheng)四個(ge)(ge)回(hui)路。此時(shi)(shi)四個(ge)(ge)發(fa)光(guang)管(guan)同(tong)時(shi)(shi)發(fa)亮(liang)，表(biao)示(shi)(shi)電(dian)(dian)(dian)池(chi)容量(liang)飽和。當(dang)電(dian)(dian)(dian)池(chi)電(dian)(dian)(dian)壓在4.1V～3.8V之(zhi)間(jian)，只(zhi)有三個(ge)(ge)芯(xin)(xin)片(pian)工作(zuo)，4102不工作(zuo)，此時(shi)(shi)形成(cheng)三個(ge)(ge)回(hui)路，三個(ge)(ge)發(fa)光(guang)管(guan)發(fa)亮(liang)，表(biao)示(shi)(shi)電(dian)(dian)(dian)池(chi)容量(liang)有所下(xia)降。同(tong)理可知其它的(de)兩種情(qing)況。

鋰芯保護電路

　　如圖1所示，電芯保護電路主(zhu)要(yao)由R5402和(he)HAT2027共同組成。除(chu)此(ci)之外(wai)，自恢復保險(xian)絲起到了最后一(yi)層保護的(de)作用。

　　R5402是一種高精(jing)度、基于(yu)CMOS的(de)鋰芯電(dian)池電(dian)壓(ya)保護芯片。HAT2027是具有電(dian)流(liu)(liu)流(liu)(liu)通方向可調的(de)雙MOS產(chan)品。

　　充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)時，電(dian)(dian)(dian)(dian)池(chi)(chi)電(dian)(dian)(dian)(dian)壓(ya)(ya)從(cong)低(di)(di)到(dao)高(gao)上升，當電(dian)(dian)(dian)(dian)池(chi)(chi)電(dian)(dian)(dian)(dian)壓(ya)(ya)大于(yu)4.25V時，充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)狀態(tai)被(bei)鎖(suo)(suo)存(cun)(cun)(cun)，引腳(jiao)(jiao)COUT就(jiu)會從(cong)高(gao)電(dian)(dian)(dian)(dian)平(ping)跳為低(di)(di)電(dian)(dian)(dian)(dian)平(ping)，HAT2027內置二極管發揮單向(xiang)導通作用(yong)。電(dian)(dian)(dian)(dian)流方向(xiang)只能從(cong)1腳(jiao)(jiao)到(dao)3腳(jiao)(jiao)，充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)源無法繼續給鋰(li)芯(xin)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)。如果充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)源繼續加載在鋰(li)芯(xin)電(dian)(dian)(dian)(dian)池(chi)(chi)組兩端，即(ji)使鋰(li)芯(xin)電(dian)(dian)(dian)(dian)壓(ya)(ya)在4.25V以下，R5402具有(you)(you)的過(guo)充(chong)(chong)(chong)(chong)鎖(suo)(suo)存(cun)(cun)(cun)狀態(tai)也不會被(bei)釋放(fang)。這(zhe)樣就(jiu)保證了電(dian)(dian)(dian)(dian)池(chi)(chi)組在連續充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)飽和(he)之后，能鎖(suo)(suo)存(cun)(cun)(cun)在過(guo)充(chong)(chong)(chong)(chong)狀態(tai)，隔離充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)源對(dui)高(gao)能量電(dian)(dian)(dian)(dian)池(chi)(chi)組持續充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)。只有(you)(you)當過(guo)充(chong)(chong)(chong)(chong)時，斷(duan)開充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)源，過(guo)充(chong)(chong)(chong)(chong)鎖(suo)(suo)存(cun)(cun)(cun)狀態(tai)才(cai)會被(bei)釋放(fang)，COUT重新變為高(gao)電(dian)(dian)(dian)(dian)平(ping)，HAT2027的1、3引腳(jiao)(jiao)此時雙向(xiang)導通，鋰(li)芯(xin)才(cai)能正常工(gong)作。

　　放(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)時(shi)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)下降，當小于2.3V時(shi)，放(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)狀(zhuang)態被(bei)鎖存，引腳(jiao)DOUT的(de)(de)輸出從高電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)平(ping)跳為(wei)低電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)平(ping)，HAT2027內置二(er)極管(guan)發揮單向導(dao)通作(zuo)用(yong)。電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流方向只能(neng)(neng)從3腳(jiao)到(dao)1腳(jiao)，鋰(li)(li)芯(xin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池組(zu)無法繼續給負載放(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)。如(ru)果沒(mei)有(you)(you)接(jie)(jie)上充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源，即(ji)使鋰(li)(li)芯(xin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)高于過(guo)放(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)的(de)(de)最(zui)大(da)值，放(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鎖存狀(zhuang)態也不會被(bei)釋(shi)放(fang)(fang)(fang)，這就保證了電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池組(zu)在(zai)(zai)經過(guo)長(chang)時(shi)間放(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)下降到(dao)2.3V之后，能(neng)(neng)鎖存在(zai)(zai)過(guo)放(fang)(fang)(fang)狀(zhuang)態，隔離(li)低能(neng)(neng)量電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池組(zu)持續放(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)。只有(you)(you)當過(guo)放(fang)(fang)(fang)時(shi)，接(jie)(jie)上充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源，鋰(li)(li)芯(xin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)開始高于過(guo)放(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)時(shi)，過(guo)放(fang)(fang)(fang)鎖存狀(zhuang)態才(cai)會被(bei)釋(shi)放(fang)(fang)(fang)，同時(shi)引腳(jiao)DOUT的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)重新變為(wei)高電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)平(ping)，HAT2027的(de)(de)1、3引腳(jiao)雙向導(dao)通，鋰(li)(li)芯(xin)既能(neng)(neng)工作(zuo)在(zai)(zai)放(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)狀(zhuang)態，又能(neng)(neng)工作(zuo)在(zai)(zai)充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)狀(zhuang)態。

　　當鋰(li)芯(xin)(xin)短路(lu)(lu)時，D。，跳到(dao)低電(dian)平。此時，鋰(li)芯(xin)(xin)受HAT2027控(kong)制無法放電(dian)，起到(dao)鋰(li)芯(xin)(xin)保(bao)護作用。與此同時，自恢復保(bao)險(xian)絲(si)由于短路(lu)(lu)的(de)大電(dian)流，會(hui)受熱膨(peng)脹，電(dian)路(lu)(lu)切斷(duan)，起到(dao)最后(hou)一層保(bao)護的(de)作用。當短路(lu)(lu)故障排除，白恢復保(bao)險(xian)絲(si)恢復，R5402檢電(dian)器釋放，D。，，重新恢復高電(dian)平。

　　該電路還增設了“休眠”的功能。當電路工作在過放狀態，補充電流將會保持非常低的值，從而停止內部電路的工作，使低能量的鋰芯不會被R5402和系統后級回路繼續消耗能量。該電路還具有瞬時監控功能。在鋰芯負極取一個電壓接到R5402的V引腳，內置檢電器的延時可以減少大概1／57秒。因此，可以監測電池容量瞬時狀態。
 

充電管理電路

　　充電管理電路由CN3066和繼電器構成，如圖4所示。當隨身電源監測到有充電器對(dui)其(qi)充(chong)(chong)電時，繼(ji)電器令CN3066開始(shi)工(gong)作(zuo)，CN3066將整個充(chong)(chong)電管理過程(cheng)分為(wei)四個部分，即預充(chong)(chong)電、恒(heng)流充(chong)(chong)電、恒(heng)壓(ya)充(chong)(chong)電以及(ji)維護充(chong)(chong)電。

　　當CN3066開始(shi)工作時(shi)，CN3066會檢(jian)測電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓是否較低，如果是，則(ze)采(cai)(cai)用涓(juan)(juan)流(liu)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，即一個比較小的(de)恒(heng)(heng)(heng)定(ding)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)對電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)進行充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，直(zhi)至(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓上(shang)升到一個安全(quan)值(zhi)。之后，充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)保(bao)持較大(da)值(zhi)不變，通常是涓(juan)(juan)流(liu)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)的(de)10倍或更大(da)。1000mAh的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)采(cai)(cai)用700mA電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，這可以(yi)避免大(da)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)對鋰(li)(li)(li)芯(xin)的(de)損(sun)壞(huai)。在(zai)(zai)恒(heng)(heng)(heng)流(liu)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)和(he)涓(juan)(juan)流(liu)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)狀(zhuang)態(tai)下，充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)管理芯(xin)片連續監控電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓，當單節(jie)鋰(li)(li)(li)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓達到4.2V，恒(heng)(heng)(heng)流(liu)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)狀(zhuang)態(tai)結(jie)束，轉入恒(heng)(heng)(heng)壓充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)狀(zhuang)態(tai)。在(zai)(zai)該(gai)狀(zhuang)態(tai)下，充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓恒(heng)(heng)(heng)定(ding)在(zai)(zai)4.2V。當鋰(li)(li)(li)芯(xin)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)下降(jiang)為原來(lai)的(de)1／10之后，恒(heng)(heng)(heng)壓充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)狀(zhuang)態(tai)結(jie)束。在(zai)(zai)維護充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)狀(zhuang)態(tai)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)充(chong)(chong)(chong)(chong)足電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)后，若移動電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)仍插(cha)在(zai)(zai)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器上(shang)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)會由于自放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)而損(sun)失(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)量。CN3066以(yi)非常小的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)對鋰(li)(li)(li)芯(xin)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)或監測電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)位，以(yi)備對鋰(li)(li)(li)芯(xin)再(zai)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，這種狀(zhuang)態(tai)稱為維護充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)狀(zhuang)態(tai)。

　　在本電(dian)(dian)(dian)(dian)路中，CN3066會實時監測(ce)鋰芯的電(dian)(dian)(dian)(dian)壓(ya)(ya)、溫度(du)(du)、充電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)流(liu)和充電(dian)(dian)(dian)(dian)時間。一旦電(dian)(dian)(dian)(dian)池的溫度(du)(du)達到60℃，或鋰離子電(dian)(dian)(dian)(dian)池的電(dian)(dian)(dian)(dian)壓(ya)(ya)達到4.2V，恒壓(ya)(ya)充電(dian)(dian)(dian)(dian)狀態自動終止(zhi)。此外，還應(ying)設置最長恒壓(ya)(ya)充電(dian)(dian)(dian)(dian)時間。在溫度(du)(du)和電(dian)(dian)(dian)(dian)壓(ya)(ya)檢測(ce)失敗的情況下，可(ke)以保證鋰電(dian)(dian)(dian)(dian)池安全充電(dian)(dian)(dian)(dian)。

　　當拔掉充電器，CN3066關(guan)閉，隨身電(dian)源處于預放電(dian)狀態。多功能擴展電(dian)路

高亮照明功能

　　戶外活動時(shi)，特別是(shi)夜(ye)間活動，需要一個(ge)(ge)高(gao)(gao)亮的(de)光(guang)(guang)源(yuan)。如(ru)圖5所示，夜(ye)行高(gao)(gao)亮照(zhao)明(ming)(ming)系(xi)統，在USB輸出口可(ke)得(de)到(dao)5V電壓，加上高(gao)(gao)亮發光(guang)(guang)二極管和一個(ge)(ge)小的(de)限流電阻共(gong)同(tong)組成。高(gao)(gao)亮管足夠(gou)5米內的(de)照(zhao)明(ming)(ming)光(guang)(guang)程。

戶外報警功能

　　戶外出行(xing)，個人財(cai)物的防盜至關重要。安全可靠(kao)的報警系統有(you)助于保障個人財(cai)物的安全，特(te)別是(shi)戶外野營(ying)，靈(ling)敏的防盜措施(shi)在夜(ye)間(jian)將發揮(hui)其巨(ju)大(da)功效。

　　如圖5所示，當按下預報警功能鍵時，USB輸出電壓加載在報警系統上，此時移動隨身電源處于“預報警”狀態。當水銀開關B1位置偏移正常的斷開位置，將觸發繼電器工作，使KD9561音樂片工作，發出報警響聲，提醒注意安全。
 

 野外驅蚊功能

　　如圖(tu)6所示，由左邊(bian)555合成的(de)振蕩(dang)頻(pin)率(lv)約為22KHz，再由右(you)邊(bian)555單穩態電路產生一(yi)個50Hz，占(zhan)空(kong)比(bi)為50％的(de)方波輸入(ru)左邊(bian)555的(de)5腳，合成一(yi)種噪(zao)聲，用(yong)于驅趕(gan)蚊(wen)于。

　　電路測試

DC-DC電路測試

　　由圖7可見，移動電(dian)(dian)源連續放電(dian)(dian)的(de)總能(neng)量在2200mAh以上，輸(shu)出(chu)穩定。

擴展功能模塊的測試

　　夜行高亮燈管的有效光程為6米。報警系統能夠正常工作。驅蚊系統發出21KHz的噪聲，對蚊子具有明顯的驅趕作用。
總體測試

　　實(shi)驗結果證明(ming)，多(duo)功能(neng)(neng)隨(sui)身(shen)電(dian)源(yuan)能(neng)(neng)對市面上大多(duo)數手(shou)機(ji)連續充電(dian)5次(ci)以上，對MP3、MP4充電(dian)12次(ci)以上，表(biao)明(ming)隨(sui)身(shen)電(dian)源(yuan)在戶(hu)外活動(dong)中(zhong)有充足的能(neng)(neng)量儲備(bei)。

　　本系統(tong)方案設計將(jiang)多(duo)功(gong)能、低功(gong)耗(hao)、安全性(xing)、高容量、重量輕等諸多(duo)特點整合(he)在一起，使(shi)整個產品(pin)的(de)設計符合(he)實際使(shi)用要求(qiu)，具有廣闊的(de)市場前(qian)景。

　　該方案科學縝密地排除了鋰(li)芯在使用過程中出現的各種安全隱患，與此同時(shi)，還巧(qiao)妙地設計了幾個人性化的功(gong)能(neng)模塊，滿足(zu)了戶外活動的常見需(xu)求。