本文設計了(le)一種多功能(neng)、高效、低功耗、安全的隨身(shen)移動電(dian)源(yuan)，以滿足戶外(wai)需求，將有很大的實(shi)用價值。

　　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

　　本系統中(zhong)，DC-DC升壓電(dian)(dian)路(lu)(lu)主要由MAX1771構成，該(gai)(gai)控(kong)(kong)制(zhi)(zhi)器采用(yong)獨特(te)的(de)(de)(de)控(kong)(kong)制(zhi)(zhi)方案，結合PFM（脈(mo)沖(chong)頻(pin)率(lv)調制(zhi)(zhi)）及(ji)PWM（脈(mo)沖(chong)寬(kuan)度調制(zhi)(zhi)）的(de)(de)(de)優越性，提供一(yi)(yi)個高(gao)效(xiao)、較(jiao)(jiao)(jiao)寬(kuan)電(dian)(dian)壓調節范圍(wei)的(de)(de)(de)電(dian)(dian)源。前(qian)者(zhe)具(ju)有較(jiao)(jiao)(jiao)小的(de)(de)(de)靜態(tai)電(dian)(dian)流(liu)，負載(zai)小的(de)(de)(de)情況(kuang)下效(xiao)率(lv)較(jiao)(jiao)(jiao)高(gao)，但紋(wen)波較(jiao)(jiao)(jiao)大。后者(zhe)在負載(zai)大的(de)(de)(de)情況(kuang)下具(ju)有較(jiao)(jiao)(jiao)高(gao)的(de)(de)(de)效(xiao)率(lv)，噪(zao)聲小。該(gai)(gai)控(kong)(kong)制(zhi)(zhi)器采用(yong)的(de)(de)(de)是一(yi)(yi)種改進(jin)型的(de)(de)(de)限(xian)流(liu)PFM控(kong)(kong)制(zhi)(zhi)方式(shi)，控(kong)(kong)制(zhi)(zhi)電(dian)(dian)路(lu)(lu)限(xian)制(zhi)(zhi)電(dian)(dian)感充電(dian)(dian)電(dian)(dian)流(liu)，使其(qi)不超過(guo)某一(yi)(yi)峰(feng)值電(dian)(dian)流(liu)。既保持了傳(chuan)統PFM的(de)(de)(de)低靜態(tai)電(dian)(dian)流(liu)，同時在較(jiao)(jiao)(jiao)大負載(zai)的(de)(de)(de)情況(kuang)下，也具(ju)有很高(gao)的(de)(de)(de)效(xiao)率(lv)。而且(qie)由于限(xian)制(zhi)(zhi)了峰(feng)值電(dian)(dian)流(liu)，采用(yong)很小體積的(de)(de)(de)外圍(wei)元件(jian)就(jiu)可(ke)獲得滿意的(de)(de)(de)輸出紋(wen)波，這樣便于降低電(dian)(dian)路(lu)(lu)成本及(ji)尺寸。

　　如(ru)圖2所示，將4腳接地，可使其工作在閉(bi)環狀(zhuang)態。芯片由(you)引腳2上(shang)(shang)的電(dian)(dian)(dian)壓供(gong)電(dian)(dian)(dian)，同時也(ye)是輸出(chu)電(dian)(dian)(dian)壓。輸入電(dian)(dian)(dian)壓可以(yi)進(jin)行從(cong)2V到輸出(chu)電(dian)(dian)(dian)壓的變化(hua)。外接MOS管柵極1腳上(shang)(shang)的電(dian)(dian)(dian)壓，從(cong)輸出(chu)電(dian)(dian)(dian)平到零電(dian)(dian)(dian)平跳變，這(zhe)樣(yang)可以(yi)提供(gong)更人(ren)的柵極驅動，從(cong)而減小外接MOS管的開啟電(dian)(dian)(dian)阻(zu)。

　　MAX1771外(wai)接MOS管平時是關閉的(de)，此時電感儲能。關閉期間，MAX1771會(hui)檢測外(wai)部輸入電壓(ya)，一旦降低到了一定限度，MAX1771就會(hui)開啟外(wai)部MOS管，電感釋放能量(liang)，重(zhong)新提供驅動電壓(ya)。開關頻率(lv)隨負(fu)載電流和輸入電壓(ya)而定。5V電壓(ya)通(tong)過兩個(ge)反饋電阻分(fen)壓(ya)得到。

　　此外，續流二極管(guan)選用肖特(te)基二極管(guan)SS34，該器件正向導通電壓小，響應時間短(duan)。

鋰芯容量指示電路

　　本系統(tong)電(dian)(dian)路(lu)設計(ji)采(cai)用(yong)(yong)了一種(zhong)比較簡單且實用(yong)(yong)的方(fang)法，即通過測試鋰芯(xin)電(dian)(dian)池(chi)放(fang)電(dian)(dian)的時間電(dian)(dian)壓特性曲線，選取整(zheng)個(ge)(ge)放(fang)電(dian)(dian)過程的四(si)個(ge)(ge)位(wei)點(dian)電(dian)(dian)壓，用(yong)(yong)電(dian)(dian)壓來估算電(dian)(dian)池(chi)的容量。

　　如圖(tu)3所示(shi)(shi)，當按下(xia)電(dian)壓(ya)容(rong)量指示(shi)(shi)的(de)功能按鍵，鋰(li)芯(xin)的(de)電(dian)池(chi)電(dian)壓(ya)會加到XC61系列(lie)芯(xin)片的(de)VIN與VSS引腳上。當電(dian)壓(ya)高(gao)丁4.1V，四個(ge)(ge)芯(xin)片同時(shi)工(gong)作(zuo)，電(dian)池(chi)與限流電(dian)阻(zu)、LED發光(guang)管(guan)(guan)(guan)形(xing)成(cheng)四個(ge)(ge)回(hui)路(lu)。此時(shi)四個(ge)(ge)發光(guang)管(guan)(guan)(guan)同時(shi)發亮(liang)，表(biao)示(shi)(shi)電(dian)池(chi)容(rong)量飽和。當電(dian)池(chi)電(dian)壓(ya)在4.1V～3.8V之(zhi)間(jian)，只有三(san)個(ge)(ge)芯(xin)片工(gong)作(zuo)，4102不工(gong)作(zuo)，此時(shi)形(xing)成(cheng)三(san)個(ge)(ge)回(hui)路(lu)，三(san)個(ge)(ge)發光(guang)管(guan)(guan)(guan)發亮(liang)，表(biao)示(shi)(shi)電(dian)池(chi)容(rong)量有所下(xia)降。同理可知(zhi)其它的(de)兩種(zhong)情況。

鋰芯保護電路

　　如圖1所示，電(dian)芯保(bao)護(hu)電(dian)路(lu)主要由R5402和HAT2027共同組成(cheng)。除此之外，自恢復保(bao)險絲(si)起到了最(zui)后一層(ceng)保(bao)護(hu)的作用。

　　R5402是一種高(gao)精(jing)度(du)、基于CMOS的(de)鋰(li)芯電池電壓保(bao)護芯片。HAT2027是具有電流流通方(fang)向可調(diao)的(de)雙MOS產品。

　　充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)時，電(dian)(dian)(dian)(dian)(dian)池電(dian)(dian)(dian)(dian)(dian)壓(ya)從(cong)低到(dao)高上升，當(dang)(dang)電(dian)(dian)(dian)(dian)(dian)池電(dian)(dian)(dian)(dian)(dian)壓(ya)大于4.25V時，充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)狀態被(bei)(bei)鎖存，引腳(jiao)COUT就會從(cong)高電(dian)(dian)(dian)(dian)(dian)平(ping)跳為(wei)低電(dian)(dian)(dian)(dian)(dian)平(ping)，HAT2027內置二極管(guan)發揮(hui)單向(xiang)(xiang)導(dao)通作用。電(dian)(dian)(dian)(dian)(dian)流方向(xiang)(xiang)只(zhi)能(neng)從(cong)1腳(jiao)到(dao)3腳(jiao)，充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)無法繼(ji)續(xu)(xu)給(gei)鋰(li)(li)芯(xin)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)。如果(guo)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)繼(ji)續(xu)(xu)加載在鋰(li)(li)芯(xin)電(dian)(dian)(dian)(dian)(dian)池組兩端(duan)，即使(shi)鋰(li)(li)芯(xin)電(dian)(dian)(dian)(dian)(dian)壓(ya)在4.25V以下，R5402具有(you)的(de)過(guo)充(chong)(chong)(chong)鎖存狀態也(ye)不會被(bei)(bei)釋放。這樣就保證了電(dian)(dian)(dian)(dian)(dian)池組在連續(xu)(xu)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)飽和之后，能(neng)鎖存在過(guo)充(chong)(chong)(chong)狀態，隔(ge)離充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)對高能(neng)量電(dian)(dian)(dian)(dian)(dian)池組持(chi)續(xu)(xu)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)。只(zhi)有(you)當(dang)(dang)過(guo)充(chong)(chong)(chong)時，斷(duan)開(kai)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)，過(guo)充(chong)(chong)(chong)鎖存狀態才(cai)會被(bei)(bei)釋放，COUT重新(xin)變為(wei)高電(dian)(dian)(dian)(dian)(dian)平(ping)，HAT2027的(de)1、3引腳(jiao)此時雙向(xiang)(xiang)導(dao)通，鋰(li)(li)芯(xin)才(cai)能(neng)正(zheng)常工作。

　　放(fang)(fang)電(dian)(dian)(dian)(dian)時(shi)(shi)(shi)，電(dian)(dian)(dian)(dian)池電(dian)(dian)(dian)(dian)壓(ya)下降，當(dang)小于2.3V時(shi)(shi)(shi)，放(fang)(fang)電(dian)(dian)(dian)(dian)狀(zhuang)(zhuang)(zhuang)態(tai)被鎖存，引(yin)腳DOUT的(de)(de)輸出從高電(dian)(dian)(dian)(dian)平跳為低電(dian)(dian)(dian)(dian)平，HAT2027內置二極管發揮單向導(dao)通作用。電(dian)(dian)(dian)(dian)流(liu)方(fang)向只(zhi)能(neng)(neng)從3腳到1腳，鋰芯電(dian)(dian)(dian)(dian)池組無法繼續(xu)給(gei)負載(zai)放(fang)(fang)電(dian)(dian)(dian)(dian)。如果沒(mei)有接(jie)上(shang)充電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)源，即使鋰芯電(dian)(dian)(dian)(dian)壓(ya)高于過放(fang)(fang)電(dian)(dian)(dian)(dian)壓(ya)的(de)(de)最大值，放(fang)(fang)電(dian)(dian)(dian)(dian)鎖存狀(zhuang)(zhuang)(zhuang)態(tai)也不(bu)會被釋(shi)放(fang)(fang)，這就保證(zheng)了(le)電(dian)(dian)(dian)(dian)池組在(zai)經過長時(shi)(shi)(shi)間放(fang)(fang)電(dian)(dian)(dian)(dian)，電(dian)(dian)(dian)(dian)壓(ya)下降到2.3V之后(hou)，能(neng)(neng)鎖存在(zai)過放(fang)(fang)狀(zhuang)(zhuang)(zhuang)態(tai)，隔(ge)離(li)低能(neng)(neng)量電(dian)(dian)(dian)(dian)池組持續(xu)放(fang)(fang)電(dian)(dian)(dian)(dian)。只(zhi)有當(dang)過放(fang)(fang)時(shi)(shi)(shi)，接(jie)上(shang)充電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)源，鋰芯電(dian)(dian)(dian)(dian)壓(ya)開始(shi)高于過放(fang)(fang)電(dian)(dian)(dian)(dian)壓(ya)時(shi)(shi)(shi)，過放(fang)(fang)鎖存狀(zhuang)(zhuang)(zhuang)態(tai)才會被釋(shi)放(fang)(fang)，同時(shi)(shi)(shi)引(yin)腳DOUT的(de)(de)電(dian)(dian)(dian)(dian)壓(ya)重新變為高電(dian)(dian)(dian)(dian)平，HAT2027的(de)(de)1、3引(yin)腳雙向導(dao)通，鋰芯既能(neng)(neng)工作在(zai)放(fang)(fang)電(dian)(dian)(dian)(dian)狀(zhuang)(zhuang)(zhuang)態(tai)，又能(neng)(neng)工作在(zai)充電(dian)(dian)(dian)(dian)狀(zhuang)(zhuang)(zhuang)態(tai)。

　　當鋰芯短路(lu)(lu)時，D。，跳到(dao)(dao)低電平。此時，鋰芯受(shou)HAT2027控制無(wu)法放電，起(qi)到(dao)(dao)鋰芯保護作用。與(yu)此同時，自恢復保險絲由于短路(lu)(lu)的(de)大電流，會受(shou)熱膨脹，電路(lu)(lu)切(qie)斷，起(qi)到(dao)(dao)最后一層保護的(de)作用。當短路(lu)(lu)故障排(pai)除，白恢復保險絲恢復，R5402檢電器(qi)釋放，D。，，重新恢復高(gao)電平。

　　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其(qi)充(chong)電(dian)時，繼(ji)電(dian)器(qi)令(ling)CN3066開始工作，CN3066將整個充(chong)電(dian)管理過程分(fen)為四個部(bu)分(fen)，即預充(chong)電(dian)、恒(heng)流充(chong)電(dian)、恒(heng)壓(ya)充(chong)電(dian)以及維護充(chong)電(dian)。

　　當(dang)(dang)CN3066開始(shi)工作時，CN3066會檢測電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)是(shi)(shi)否較低，如果是(shi)(shi)，則采(cai)用(yong)涓流(liu)(liu)(liu)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，即一個比較小的(de)(de)(de)恒(heng)(heng)(heng)定電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)對(dui)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)進(jin)行(xing)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，直至(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)上升到一個安全值。之(zhi)后，充(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)流(liu)(liu)(liu)保持較大值不變，通常是(shi)(shi)涓流(liu)(liu)(liu)充(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)流(liu)(liu)(liu)的(de)(de)(de)10倍或(huo)更大。1000mAh的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)采(cai)用(yong)700mA電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，這(zhe)可以避(bi)免大電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)對(dui)鋰(li)芯(xin)的(de)(de)(de)損壞。在(zai)(zai)(zai)恒(heng)(heng)(heng)流(liu)(liu)(liu)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)和(he)涓流(liu)(liu)(liu)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)狀態(tai)下，充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)管理芯(xin)片連續監(jian)控電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)，當(dang)(dang)單(dan)節鋰(li)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)達(da)到4.2V，恒(heng)(heng)(heng)流(liu)(liu)(liu)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)狀態(tai)結束(shu)，轉入恒(heng)(heng)(heng)壓(ya)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)狀態(tai)。在(zai)(zai)(zai)該(gai)狀態(tai)下，充(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)壓(ya)恒(heng)(heng)(heng)定在(zai)(zai)(zai)4.2V。當(dang)(dang)鋰(li)芯(xin)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)下降(jiang)為原(yuan)來的(de)(de)(de)1／10之(zhi)后，恒(heng)(heng)(heng)壓(ya)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)狀態(tai)結束(shu)。在(zai)(zai)(zai)維護充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)狀態(tai)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)充(chong)(chong)(chong)(chong)足電(dian)(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)(dian)源仍插(cha)在(zai)(zai)(zai)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器上，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)會由于自放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)而損失電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)量。CN3066以非常小的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)對(dui)鋰(li)芯(xin)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)或(huo)監(jian)測電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)位，以備對(dui)鋰(li)芯(xin)再(zai)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，這(zhe)種狀態(tai)稱(cheng)為維護充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)狀態(tai)。

　　在本(ben)電(dian)路中，CN3066會實時(shi)監測鋰(li)芯的電(dian)壓(ya)(ya)、溫(wen)度(du)(du)、充(chong)電(dian)電(dian)流和充(chong)電(dian)時(shi)間。一旦(dan)電(dian)池(chi)的溫(wen)度(du)(du)達(da)到60℃，或鋰(li)離(li)子電(dian)池(chi)的電(dian)壓(ya)(ya)達(da)到4.2V，恒壓(ya)(ya)充(chong)電(dian)狀態自動終止。此外(wai)，還應設置最(zui)長恒壓(ya)(ya)充(chong)電(dian)時(shi)間。在溫(wen)度(du)(du)和電(dian)壓(ya)(ya)檢測失(shi)敗的情(qing)況下，可以保證鋰(li)電(dian)池(chi)安全充(chong)電(dian)。

　　當拔掉充電器，CN3066關閉，隨身電源(yuan)處于(yu)預放電狀(zhuang)態。多(duo)功能擴展(zhan)電路

高亮照明功能

　　戶外活動時，特別是夜(ye)間活動，需要一(yi)個高(gao)(gao)亮的(de)光(guang)源。如圖5所示，夜(ye)行高(gao)(gao)亮照(zhao)明系統，在USB輸出口可得到5V電(dian)壓，加上高(gao)(gao)亮發光(guang)二(er)極管和一(yi)個小的(de)限流電(dian)阻共(gong)同組成。高(gao)(gao)亮管足夠5米內的(de)照(zhao)明光(guang)程(cheng)。

戶外報警功能

　　戶外出行，個人(ren)財物的(de)防盜(dao)至(zhi)關重要。安全可靠的(de)報警系統(tong)有助(zhu)于保障(zhang)個人(ren)財物的(de)安全，特(te)別是戶外野營，靈敏的(de)防盜(dao)措施在夜間將發揮(hui)其(qi)巨(ju)大功效。

　　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6所示，由左邊(bian)555合成的(de)(de)振蕩頻率(lv)約為(wei)22KHz，再由右邊(bian)555單穩態電路產生(sheng)一個50Hz，占空(kong)比為(wei)50％的(de)(de)方波(bo)輸入(ru)左邊(bian)555的(de)(de)5腳(jiao)，合成一種噪聲(sheng)，用(yong)于驅趕蚊于。

　　電路測試

DC-DC電路測試

　　由圖7可見(jian)，移動電(dian)源(yuan)連續放(fang)電(dian)的總能量在2200mAh以上，輸(shu)出穩定。

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

　　實驗結(jie)果證明，多功(gong)能(neng)隨(sui)身電(dian)(dian)(dian)源能(neng)對市面上(shang)(shang)大(da)多數手機連(lian)續充電(dian)(dian)(dian)5次(ci)以上(shang)(shang)，對MP3、MP4充電(dian)(dian)(dian)12次(ci)以上(shang)(shang)，表明隨(sui)身電(dian)(dian)(dian)源在戶(hu)外活動(dong)中(zhong)有充足(zu)的能(neng)量儲備。

　　本系統方案設(she)計將多功能(neng)、低功耗、安全性、高容量、重量輕(qing)等諸(zhu)多特點(dian)整(zheng)合在一起，使整(zheng)個產品(pin)的(de)設(she)計符合實(shi)際使用要求，具有廣闊的(de)市場前景。

　　該方案科學縝密(mi)地排除(chu)了(le)鋰芯在使(shi)用過程中(zhong)出(chu)現(xian)的各種安全隱(yin)患，與此同時，還巧妙地設計(ji)了(le)幾個(ge)人(ren)性化的功能模(mo)塊(kuai)，滿足了(le)戶外活動的常見需求。