消費電(dian)子產品(pin)以及許多(duo)其他行(xing)(xing)業都越來越講究產品(pin)的(de)(de)移動性，醫(yi)療(liao)器(qi)械制(zhi)造商也不(bu)例(li)外，這樣的(de)(de)趨勢提高(gao)了(le)現場救助設(she)備(bei)、監(jian)控(kong)設(she)備(bei)和固定醫(yi)療(liao)設(she)備(bei)的(de)(de)性能，進(jin)而(er)推動了(le)醫(yi)療(liao)保健行(xing)(xing)業的(de)(de)發展。不(bu)過除(chu)了(le)便攜性以外，醫(yi)療(liao)器(qi)械制(zhi)造商當然還(huan)希望(wang)能夠(gou)制(zhi)造出可靠性高(gao)的(de)(de)器(qi)械，因為人(ren)們(men)的(de)(de)生命往往命懸一線。手機壞(huai)了(le)固然是(shi)惱人(ren)的(de)(de)事，但如果(guo)便攜式心臟監(jian)控(kong)儀或者輸液(ye)泵(beng)由于電(dian)池耗盡(jin)而(er)停止運作，終端用(yong)戶――及病人(ren)――面臨的(de)(de)問題則(ze)嚴重得多(duo)。 一種能量密度更高(gao)的(de)(de)技(ji)術可以釋(shi)放比其它同類(lei)產品(pin)更多(duo)的(de)(de)能量，且體積更小。

    幾年前，醫療專業人員還無法將救助生命的設備帶到現場；因為那時便攜式儀器的技術尚未成熟。但如今，大量的監控儀器、超聲設備和輸液泵可在遠離醫院的場所使用――甚至戰場。便攜式設備的移動越來越方便。正是由于諸如鋰離子電池等技(ji)術的(de)應用，重達50磅的(de)笨重除顫器才可以被更(geng)輕便、更(geng)緊湊的(de)用戶友(you)好(hao)型裝置取代，也不會(hui)造成醫(yi)護人員肌(ji)肉(rou)的(de)拉傷。

    病(bing)人(ren)的移動性也(ye)變得越(yue)來(lai)越(yue)重(zhong)要。如今(jin)的病(bing)人(ren)可能會從放射科(ke)轉(zhuan)移到(dao)(dao)重(zhong)癥監護(hu)病(bing)房(fang)，從救護(hu)車轉(zhuan)移到(dao)(dao)急(ji)救室，或用救護(hu)車從一(yi)家醫院(yuan)轉(zhuan)移到(dao)(dao)另一(yi)家醫院(yuan)。同(tong)樣地，便攜式(shi)家用儀器和移動式(shi)監控設(she)備(bei)的普及，使(shi)病(bing)人(ren)可以待(dai)在(zai)喜(xi)歡的地方，而并不(bu)一(yi)定要留在(zai)醫療機構中(zhong)。便攜式(shi)醫療器械必須(xu)真正實現完全意義上的便攜，為病(bing)人(ren)提(ti)供最佳(jia)服(fu)務。

    對(dui)更(geng)小型、更(geng)輕便的(de)(de)醫療器械的(de)(de)需(xu)求也因此(ci)顯著增加，這大大激發了(le)人們對(dui)更(geng)高能量密度、更(geng)小巧(qiao)的(de)(de)電(dian)池組的(de)(de)興趣。筆記本電(dian)腦(nao)和手機使用(yong)的(de)(de)鋰(li)離子電(dian)池技(ji)術已(yi)經有了(le)許(xu)多(duo)突破(po)，醫療設備設計(ji)工程(cheng)師可以對(dui)此(ci)加以創(chuang)新利用(yong)。

    與其它傳統技術(shu)相(xiang)比(bi)，鋰離子電池在便攜式(shi)醫療設(she)備的應用(yong)中具有(you)很多優勢。這包括(kuo)能量(liang)密(mi)度(du)更高、重量(liang)更輕(qing)、循環壽(shou)命(ming)更長、電池容量(liang)保持特性更好，以及適用(yong)溫度(du)范(fan)圍(wei)更廣。

    由(you)于(yu)化(hua)學性(xing)質獨(du)特，鋰(li)離子技(ji)術對設計方面(mian)的限制與(yu)先前的電(dian)池技(ji)術如鎳氫化(hua)合物(wu)(NiMH)、鎳鎘(NiCd)和密(mi)封鉛酸(SLA)不同(tong)。同(tong)時，醫療設備在某些方面(mian)比消費電(dian)子產(chan)品有更(geng)嚴格的操(cao)作要(yao)求；由(you)于(yu)可(ke)(ke)靠性(xing)非常重要(yao)，因此需(xu)要(yao)有功能強(qiang)大的電(dian)池組，帶有精確電(dian)量監(jian)測(ce)且可(ke)(ke)靠的電(dian)池。

    本文結合醫療器械(xie)的要求及鋰(li)(li)離子技術(shu)的特(te)性(xing)，概述了(le)(le)便攜式(shi)電(dian)源系統設計(ji)的注(zhu)意事項。并比較了(le)(le)鋰(li)(li)離子電(dian)池和(he)其它化(hua)學(xue)電(dian)池的特(te)性(xing)和(he)容(rong)量。

    能量密度(du)和電(dian)壓

    鋰離子電池技術的主要優勢在于其能量密度的顯著提高。相同體積和重量時，鋰離子電池可(ke)儲存和釋放的(de)(de)(de)能量(liang)(liang)比(bi)其(qi)它(ta)充電電池更高。能量(liang)(liang)密度以體積(ji)和質量(liang)(liang)兩種方式測量(liang)(liang)。鋰(li)離(li)子技(ji)術現可(ke)以提供近500Wh/L的(de)(de)(de)體積(ji)能量(liang)(liang)密度和200Wh/kg的(de)(de)(de)質量(liang)(liang)能量(liang)(liang)密度(見圖1)。

    圖1.鋰離子的能量密度遠高于(yu)鎳化合(he)物(wu)。

    與其它技術相(xiang)比，鋰離(li)(li)子可以釋(shi)放更多的(de)(de)能量(liang)，而且體積更小，質量(liang)更輕(qing)。鋰離(li)(li)子電池(chi)的(de)(de)工作電壓(ya)比其它充電電池(chi)更高，通常約(yue)為3.7V，而NiCd或NiMH電池(chi)為1.2V。這意味著需要使用多節(jie)其它電池(chi)時(shi)，僅(jin)需一節(jie)鋰離(li)(li)子電池(chi)即可滿足(zu)使用要求。便(bian)攜(xie)式儀(yi)器設計中使用的(de)(de)電池(chi)能量(liang)密(mi)度越(yue)高，其產(chan)品的(de)(de)體積越(yue)小，便(bian)攜(xie)性也(ye)越(yue)好。

    電池組體積(ji)的縮小(xiao)表(biao)示(shi)工程師可(ke)以利用多(duo)余(yu)空(kong)間(jian)，在同一產品(pin)中增添更多(duo)新功能(見圖2)。

    圖2.鋰離子電池有圓(yuan)柱(zhu)(zhu)形(xing)和(he)棱柱(zhu)(zhu)形(xing)兩種形(xing)狀，可制成不同尺寸和(he)容量的(de)電池。

    自放電

    充電(dian)電(dian)池的容量會不斷損(sun)失。該現象即稱為自放電(dian)。但若儲存得當，其損(sun)失的大部分容量仍可恢復。

    所有(you)電(dian)池(chi)均應在(zai)室溫（25°C或更(geng)低(di)）下(xia)儲(chu)存，以(yi)保持(chi)最大的(de)(de)電(dian)池(chi)容量(liang)。終端用戶須將(jiang)SLA電(dian)池(chi)放在(zai)低(di)溫下(xia)儲(chu)存，并盡可能每次充電(dian)量(liang)接近(jin)其容量(liang)的(de)(de)100%，以(yi)保持(chi)最佳性能。密(mi)封鉛電(dian)池(chi)在(zai)25°C下(xia)放置6個(ge)(ge)月(yue)后(hou)自放電(dian)容量(liang)約(yue)為20%；但40°C放置6個(ge)(ge)月(yue)后(hou)該值則增加到約(yue)30%。NiMH電(dian)池(chi)也應遵循類似的(de)(de)建議，避(bi)免(mian)長期儲(chu)存使(shi)反應物失活。NiCd和NiMH電(dian)池(chi)在(zai)25°C下(xia)放置1個(ge)(ge)月(yue)，其自放電(dian)率(lv)約(yue)為20%，隨后(hou)自放電(dian)率(lv)的(de)(de)增速顯著減慢。相(xiang)反，當(dang)鋰(li)離子電(dian)池(chi)儲(chu)存時的(de)(de)充電(dian)電(dian)量(liang)為30-50%時，可獲得最佳循環(huan)壽命。鋰(li)離子電(dian)池(chi)25°C儲(chu)存6個(ge)(ge)月(yue)后(hou)的(de)(de)自放電(dian)容量(liang)僅為10%。

    倍(bei)率特(te)性(xing)

    選擇材料時，應(ying)考(kao)慮到(dao)其終(zhong)端裝置的涌流和最大(da)放電(dian)率。電(dian)池或電(dian)池組以(yi)高(gao)倍(bei)率放電(dian)會(hui)造成電(dian)壓下降。如(ru)果設計(ji)時沒有考(kao)慮到(dao)這方(fang)面，終(zhong)端裝置可能會(hui)由于電(dian)壓不(bu)足而(er)關(guan)閉。

    高倍(bei)率(lv)的NiCd電池(chi)(chi)(chi)的連續(xu)放電率(lv)可達(da)2C（電池(chi)(chi)(chi)額(e)定容量的兩倍(bei)）甚至更高，具(ju)體取決于電池(chi)(chi)(chi)原料(liao)及內部阻抗(kang)。許(xu)多SLA電池(chi)(chi)(chi)的連續(xu)放電率(lv)可達(da)3C甚至更高。大部分的鋰離子電池(chi)(chi)(chi)的連續(xu)放電率(lv)僅為1C，但(dan)采用該(gai)技術的新電池(chi)(chi)(chi)，其連續(xu)放電率(lv)極高，達(da)到(dao)80A，可持續(xu)30秒(miao)，在與NiCd和(he)SLA電池(chi)(chi)(chi)的競(jing)爭中具(ju)有很大的優勢。

    循環壽(shou)命

    電(dian)(dian)(dian)(dian)池(chi)的(de)(de)循(xun)(xun)環壽(shou)命是電(dian)(dian)(dian)(dian)池(chi)容(rong)量(liang)下降到其(qi)原(yuan)始容(rong)量(liang)的(de)(de)某一規定百分比之前(qian)，電(dian)(dian)(dian)(dian)池(chi)所經(jing)歷的(de)(de)充(chong)放(fang)電(dian)(dian)(dian)(dian)循(xun)(xun)環次數。鉛酸電(dian)(dian)(dian)(dian)池(chi)的(de)(de)循(xun)(xun)環壽(shou)命約為(wei)250至(zhi)500次，具體取決于(yu)制造(zao)商的(de)(de)產品質量(liang)和放(fang)電(dian)(dian)(dian)(dian)深(shen)度（放(fang)電(dian)(dian)(dian)(dian)容(rong)量(liang)最多至(zhi)額定容(rong)量(liang)的(de)(de)60%）。NiCd、NiMH和鋰(li)離子電(dian)(dian)(dian)(dian)池(chi)通常可(ke)耐受500-700次充(chong)放(fang)電(dian)(dian)(dian)(dian)循(xun)(xun)環，其(qi)容(rong)量(liang)僅(jin)下降為(wei)額定容(rong)量(liang)的(de)(de)80%。不管使用(yong)何種化學物質，電(dian)(dian)(dian)(dian)池(chi)放(fang)電(dian)(dian)(dian)(dian)深(shen)度越深(shen)，用(yong)戶可(ke)使用(yong)的(de)(de)循(xun)(xun)環次數就越少。

    充(chong)電差異

    鋰(li)(li)離(li)子(zi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)的(de)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)方式(shi)不同于其它(ta)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)。SLA電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)最(zui)好采(cai)用恒壓充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)，速(su)(su)(su)(su)率通常為(wei)(wei)額定容量的(de)1/10(C/10)，充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)時間(jian)為(wei)(wei)14-16小(xiao)時，或(huo)涓流(liu)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)或(huo)浮充(chong)(chong)(chong)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)，充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)速(su)(su)(su)(su)率為(wei)(wei)C/20至C/30。NiCd電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)終止推(tui)薦采(cai)用-△V的(de)方式(shi)，此(ci)時充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)器的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓到達峰值。NiMH電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)由于其發熱(re)的(de)特點(dian)，充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)過(guo)程中要求采(cai)用溫(wen)度檢測(ce)，ΔT/Δt為(wei)(wei)其首選方式(shi)。特制的(de)快(kuai)(kuai)充(chong)(chong)(chong)式(shi)NiCd和NiMH電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)可在(zai)C/2-C/3的(de)速(su)(su)(su)(su)率下充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)4-6小(xiao)時。極低阻尼鎳(nie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)作(zuo)為(wei)(wei)快(kuai)(kuai)充(chong)(chong)(chong)式(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)的(de)一種，可在(zai)1C速(su)(su)(su)(su)率下充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)1小(xiao)時。最(zui)后，鋰(li)(li)離(li)子(zi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)建議采(cai)用恒流(liu)/恒壓充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(CC/CV)。

    通常，鋰離子(zi)電(dian)池(chi)供(gong)電(dian)的器(qi)械(xie)以1C的速(su)率充電(dian)60-75分鐘至4.1V后，即可(ke)(ke)從原來的低能狀態達(da)到(dao)電(dian)量80-90%的狀態。其(qi)它(ta)電(dian)池(chi)，除可(ke)(ke)采用高(gao)電(dian)流(liu)充電(dian)的特制電(dian)池(chi)外，同樣充電(dian)至80-90%時可(ke)(ke)能需(xu)要更多的時間。

   鋰離子電池還需(xu)慢充4-5小時至4.2V，獲(huo)得剩余的(de)10-20%的(de)電量(liang)。這種充電方式有兩個好處。用戶(hu)可以在極短的(de)時間(jian)內(nei)獲(huo)得接近滿充的(de)電量(liang)，且(qie)充電完成(cheng)后的(de)實(shi)際電壓絕不(bu)會超過4.2V。

    須(xu)注意的(de)是：如果僅將鋰(li)(li)離子(zi)電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)充(chong)至(zhi)4.1V而非4.2V，可(ke)(ke)延長(chang)其循環壽命；但其每次可(ke)(ke)用(yong)(yong)的(de)電(dian)(dian)(dian)(dian)量將會下(xia)降。在某些醫療器械(xie)中電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)是一(yi)種后(hou)備裝置，它(ta)始(shi)終保持充(chong)電(dian)(dian)(dian)(dian)的(de)狀(zhuang)態(tai)，以保證隨(sui)時可(ke)(ke)用(yong)(yong)。鋰(li)(li)離子(zi)的(de)化學性(xing)質決定其不(bu)適合采(cai)用(yong)(yong)涓流充(chong)電(dian)(dian)(dian)(dian)；鋰(li)(li)離子(zi)電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)不(bu)能采(cai)用(yong)(yong)恒定浮充(chong)充(chong)電(dian)(dian)(dian)(dian)。但有幾種方法(fa)可(ke)(ke)以在不(bu)損害電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)或(huo)影響醫療器械(xie)的(de)基礎上，有效降低鋰(li)(li)離子(zi)電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)過度充(chong)電(dian)(dian)(dian)(dian)的(de)可(ke)(ke)能性(xing)。方法(fa)之(zhi)一(yi)是在觸發電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)再(zai)次充(chong)電(dian)(dian)(dian)(dian)前確(que)保電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)放(fang)電(dian)(dian)(dian)(dian)量至(zhi)少為20%，隨(sui)后(hou)進(jin)行標(biao)準充(chong)電(dian)(dian)(dian)(dian)。鋰(li)(li)離子(zi)技術與SLA相比顯著提(ti)高了能量密度，在大(da)多數(shu)情況下(xia)足以防止鋰(li)(li)離子(zi)電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)電(dian)(dian)(dian)(dian)量完(wan)全充(chong)滿。

    安(an)全電(dian)路

    每種電(dian)(dian)(dian)池(chi)(chi)技術均有(you)(you)其一整套安(an)全考慮。NiCd電(dian)(dian)(dian)池(chi)(chi)組帶(dai)有(you)(you)某種電(dian)(dian)(dian)流分(fen)(fen)斷設(she)備(bei)以防(fang)止發生嚴重(zhong)故障(zhang)，這是優(you)秀的電(dian)(dian)(dian)池(chi)(chi)設(she)計必(bi)不可少(shao)的。NiMH具(ju)有(you)(you)發熱的化學性質，因(yin)此電(dian)(dian)(dian)池(chi)(chi)中需配有(you)(you)熱量(liang)感應設(she)備(bei)，與充(chong)(chong)電(dian)(dian)(dian)器相聯系，防(fang)止過度充(chong)(chong)電(dian)(dian)(dian)，電(dian)(dian)(dian)池(chi)(chi)組本身還帶(dai)有(you)(you)電(dian)(dian)(dian)流分(fen)(fen)斷設(she)備(bei)。在鋰離子電(dian)(dian)(dian)池(chi)(chi)組中，一旦發生過電(dian)(dian)(dian)壓(ya)，即有(you)(you)鋰金屬產生。這說明(ming)電(dian)(dian)(dian)池(chi)(chi)中應使用安(an)全電(dian)(dian)(dian)路(lu)，使充(chong)(chong)放(fang)電(dian)(dian)(dian)過程中電(dian)(dian)(dian)池(chi)(chi)電(dian)(dian)(dian)壓(ya)保持在特(te)定的范圍內(見圖3)。

    圖3.鋰離子電池組設(she)計中需(xu)要(yao)采用電子安全裝(zhuang)置。電池組內還(huan)包(bao)含電量監測裝(zhuang)置和充電電路。

    雖然SLA電(dian)(dian)(dian)池一般(ban)不(bu)需要(yao)外部安全(quan)元件，但(dan)許多醫(yi)療(liao)設備制(zhi)造商仍(reng)堅持將不(bu)可復(fu)位保(bao)(bao)險絲置于(yu)電(dian)(dian)(dian)池內部或(huo)周圍。由于(yu)大(da)部分SLA電(dian)(dian)(dian)池都(dou)帶(dai)有突(tu)出的正負極板，如果沒有保(bao)(bao)險絲，當其置于(yu)金屬板上時，就很容易發生(sheng)短路(lu)(lu)，而金屬板大(da)量存在(zai)于(yu)醫(yi)療(liao)保(bao)(bao)健設備中。這(zhe)些(xie)電(dian)(dian)(dian)池還(huan)可能出現其它(ta)短路(lu)(lu)的危(wei)險。如果發生(sheng)短路(lu)(lu)，裝置即(ji)有爆(bao)炸的可能。鋰離子電(dian)(dian)(dian)池組短路(lu)(lu)的危(wei)險較小，安全(quan)電(dian)(dian)(dian)路(lu)(lu)主(zhu)要(yao)用(yong)于(yu)保(bao)(bao)護(hu)電(dian)(dian)(dian)池。

    在(zai)電(dian)池中(zhong)加入安全電(dian)路增加了(le)(le)器械的成本，耗(hao)費了(le)(le)更(geng)多的空間。設計者必須(xu)認識(shi)到這些都是電(dian)池的選擇(ze)過程中(zhong)會考慮到的權衡(heng)因素。總的來說(shuo)，盡管有(you)安全電(dian)路的存在(zai)，鋰離(li)子電(dian)池仍可以縮小(xiao)電(dian)池組(zu)體積(ji)，減輕其重量，并能釋放更(geng)多的能量。

    電(dian)量(liang)監(jian)測(ce)

    來越(yue)(yue)多的(de)醫療器械制造商開始采用(yong)鋰離子技術，電(dian)池(chi)管(guan)(guan)理(li)(li)特性在行業中(zhong)也越(yue)(yue)來越(yue)(yue)常見。電(dian)量監測設備可以為終端用(yong)戶提(ti)供一些信息，如電(dian)池(chi)預(yu)計使用(yong)時(shi)間等。管(guan)(guan)理(li)(li)特性的(de)引入，很(hen)大程度上明(ming)確了(le)電(dian)池(chi)電(dian)量評估及充電(dian)方案的(de)執(zhi)行。

    就(jiu)電池管(guan)理而言，使用鋰離(li)子電池的(de)(de)(de)設(she)計者有(you)多(duo)種選擇方案。例如，一些鋰離(li)子電池電量監測設(she)備中含有(you)信息(xi)特(te)征，可以報告(gao)已經過的(de)(de)(de)充放電循(xun)環次(ci)數。此類信息(xi)在(zai)一些重要的(de)(de)(de)醫療設(she)備中具有(you)重要作用。電量監測基本方法(fa)有(you)兩種：基于電壓和(he)庫侖(lun)計數。將兩種技(ji)術相(xiang)結合的(de)(de)(de)解決方案，其準確性(xing)高達99%。

    耐高溫性

    鋰離子電(dian)(dian)池(chi)(chi)(chi)在40°-45°C的高溫條件下，性能優于其它電(dian)(dian)池(chi)(chi)(chi)。SLA和NiMH電(dian)(dian)池(chi)(chi)(chi)在高熱(re)量環境(jing)(jing)下無法正常工(gong)作。這成(cheng)為(wei)其在急救工(gong)具中使(shi)(shi)用(yong)的一(yi)個限制因(yin)素，因(yin)為(wei)此時，使(shi)(shi)用(yong)者無法將(jiang)他們的便(bian)攜(xie)式器(qi)械(xie)保存在低溫環境(jing)(jing)下。

    在(zai)為便攜式器械選(xuan)擇最佳(jia)電源(yuan)方案時，必須對其總(zong)成本和整體性(xing)能(neng)進行評(ping)估。

    鋰離(li)(li)子(zi)(zi)技術(shu)的高(gao)電(dian)(dian)壓特性可以減少(shao)電(dian)(dian)池(chi)(chi)使(shi)(shi)用量(liang)，由此降低(di)了電(dian)(dian)池(chi)(chi)組的成本(ben)，使(shi)(shi)之與(yu)使(shi)(shi)用鎳技術(shu)的電(dian)(dian)池(chi)(chi)大(da)致相當。此外，鋰離(li)(li)子(zi)(zi)電(dian)(dian)池(chi)(chi)供應商不斷使(shi)(shi)用新材料，以降低(di)電(dian)(dian)池(chi)(chi)成本(ben)。

    鋰離子電池體積小、重量輕、能(neng)量高、循(xun)環壽命(ming)長、耐久性(xing)好、電壓高及耐熱(re)性(xing)好的(de)特點使(shi)其具(ju)有潛(qian)在的(de)優勢(shi)。醫療電子(zi)產品制(zhi)造商可以利用(yong)這些(xie)特性(xing)，拓寬產品市場，并最(zui)終(zhong)給消費(fei)者(zhe)、醫療專(zhuan)業(ye)人員和病人帶來(lai)治療等方面的(de)好處(chu)。