2022-07-28
锂电(dian)池隔膜作为正负电(dian)极的(de)隔离材料(liao)是(shi)锂电(dian)池的(de)必要组(zu)成部分。隔膜材料(liao)的(de)性能(neng)直(zhi)接(jie)影响到电(dian)池的(de)安全性和成本。
随着科学技术(shu)的进(jin)步(bu)和环保(bao)意识的日益提高(gao)，锂(li)离子电(dian)池具有工作电(dian)压高(gao)、能量密度大(da)、循环寿命长、自放电(dian)率小(xiao)、污染低、无记(ji)忆(yi)效(xiao)应等优势，广(guang)泛(fan)应用于手机、笔(bi)记(ji)本电(dian)脑、平板电(dian)脑、数(shu)码相机、电(dian)动(dong)汽车、航空航天、导(dao)航、卫星、小(xiao)型医疗(liao)等领域。
抗(kang)穿刺(ci)性(xing)(xing)是评价隔(ge)(ge)膜(mo)材料性(xing)(xing)能(neng)(neng)的(de)重要(yao)机(ji)械指标，它(ta)能(neng)(neng)有效(xiao)反映隔(ge)(ge)膜(mo)在(zai)装配(pei)过程中是否(fou)容(rong)易短路。将混合的(de)活性(xing)(xing)物质、炭黑、增塑剂和PVDF均(jun)匀(yun)地涂(tu)覆在(zai)金属(shu)箔(bo)上，制成(cheng)(cheng)锂电池电极(ji)后经(jing)过高温真空干燥，其表面由混合的(de)活性(xing)(xing)物质和炭黑颗(ke)粒而(er)形成(cheng)(cheng)的(de)不均(jun)匀(yun)结构，因此夹在(zai)隔(ge)(ge)膜(mo)内(nei)的(de)正(zheng)(zheng)负电极(ji)材料，需要(yao)承受(shou)很大的(de)压力，因此，隔(ge)(ge)膜(mo)材料应具有较强(qiang)的(de)抗(kang)穿刺(ci)能(neng)(neng)力，防止锂电池正(zheng)(zheng)负电极(ji)接触造成(cheng)(cheng)短路。
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一、当(dang)聚合物软包锂电(dian)池(chi)无法充电(dian)时(shi)是什么原(yuan)因？1）检查(cha)电(dian)池(chi)是否(fou)为零(ling)电(dian)压、高(gao)内(nei)阻电(dian)池(chi)；2）检查(cha)保(bao)护电(dian)路的连(lian)接是否(fou)异(yi)常(chang)；3）检查(cha)电(dian)池(chi)在充电(dian)状(zhuang)态下是否(fou)有异(yi)常(chang)，如无充电(dian)电(dian)压/电(dian)流(liu)输出；4）环(huan)境温度是否(fou)过(guo)高(gao)导致充电(dian)效(xiao)率低（佳(jia)温度不应超过(guo)40℃）。处理(li)方(fang)法：1）
2022-03-19
每(mei)节磷(lin)酸铁(tie)锂(li)(li)(li)电(dian)(dian)(dian)(dian)池(chi)(chi)电(dian)(dian)(dian)(dian)压(ya)设定值(12V40AH)磷(lin)酸铁(tie)锂(li)(li)(li)电(dian)(dian)(dian)(dian)池(chi)(chi)过(guo)(guo)放电(dian)(dian)(dian)(dian)电(dian)(dian)(dian)(dian)压(ya)点为8.0V：在放电(dian)(dian)(dian)(dian)状(zhuang)态(tai)(tai)(tai)下(xia)，电(dian)(dian)(dian)(dian)池(chi)(chi)电(dian)(dian)(dian)(dian)压(ya)降至(zhi)8.0V，关闭保(bao)护板(ban)输出，电(dian)(dian)(dian)(dian)池(chi)(chi)进入(ru)过(guo)(guo)放电(dian)(dian)(dian)(dian)状(zhuang)态(tai)(tai)(tai)；磷(lin)酸铁(tie)锂(li)(li)(li)电(dian)(dian)(dian)(dian)池(chi)(chi)过(guo)(guo)放电(dian)(dian)(dian)(dian)恢(hui)复电(dian)(dian)(dian)(dian)压(ya)点9.2V：在过(guo)(guo)放电(dian)(dian)(dian)(dian)状(zhuang)态(tai)(tai)(tai)下(xia)，电(dian)(dian)(dian)(dian)池(chi)(chi)自(zi)动(dong)升到9.2V然后将负载断开，电(dian)(dian)(dian)(dian)池(chi)(chi)可向
2022-08-12
单(dan)(dan)个磷(lin)(lin)酸铁锂(li)电(dian)(dian)池(chi)(chi)(chi)的(de)额(e)定电(dian)(dian)压平台为(wei)3.2V。显然(ran)，单(dan)(dan)个电(dian)(dian)池(chi)(chi)(chi)远(yuan)远(yuan)不(bu)能满(man)足电(dian)(dian)动(dong)汽车对动(dong)力电(dian)(dian)池(chi)(chi)(chi)电(dian)(dian)压水(shui)平的(de)需求。另一(yi)方(fang)面，目(mu)前生产(chan)的(de)单(dan)(dan)体(ti)磷(lin)(lin)酸铁锂(li)电(dian)(dian)池(chi)(chi)(chi)的(de)额(e)定容量(liang)有(you)限，因此，磷(lin)(lin)酸铁锂(li)电(dian)(dian)池(chi)(chi)(chi)在使用过程中，常建(jian)议先并联再串联。然(ran)而，由于(yu)单(dan)(dan)体(ti)电(dian)(dian)池(chi)(chi)(chi)生产(chan)过程中性能参(can)数的(de)分(fen)散(san)，
2022-10-15
在(zai)军(jun)事领域，战(zhan)术便携式设备(如通信、指(zhi)控、侦察、定位等设备)多(duo)采(cai)用锂离(li)子电(dian)(dian)池(chi)作为核心(xin)供电(dian)(dian)单元，可满(man)足设备在(zai)多(duo)种使用方式(手持(chi)、鞍座、磨损、运输)下(xia)的功率(lv)需求。锂离(li)子电(dian)(dian)池(chi)提供3.6V、7.2V、14.4V和25.2V四个电(dian)(dian)压(ya)等级，容(rong)量在(zai)12Ah以(yi)下(xia)。配
2022-08-11
挂(gua)卡锂电(dian)(dian)池(chi)放(fang)置时间(jian)过长会进入休眠模(mo)式，此时的容量低于正常(chang)，工(gong)作(zuo)时间(jian)变短(duan)，但其易激(ji)(ji)活(huo)，正常(chang)充放(fang)电(dian)(dian)循环3-5次即可激(ji)(ji)活(huo)，电(dian)(dian)池(chi)容量恢(hui)复正常(chang)。由(you)于挂(gua)卡锂电(dian)(dian)池(chi)本身的特性，其无记(ji)忆效应(ying)。因此在激(ji)(ji)活(huo)电(dian)(dian)池(chi)过程(cheng)中(zhong)并不(bu)需要特殊(shu)的方法和设备。不(bu)仅(jin)在理论上，对于锂电(dian)(dian)池(chi)的“激(ji)(ji)
2022-04-01
目(mu)前，锂离(li)子(zi)电(dian)(dian)池中使(shi)用的(de)(de)负(fu)极材料一般为碳材料，如石墨、软碳 (如焦(jiao)炭等) 、硬碳等。正在探索的(de)(de)阳极材料包(bao)括氮化(hua)物(wu)，PAS，锡(xi)(xi)基氧化(hua)物(wu)，锡(xi)(xi)基氧化(hua)物(wu)，锡(xi)(xi)合金和纳米负(fu)极材料。作为锂离(li)子(zi)电(dian)(dian)池的(de)(de)负(fu)极材料，要求(qiu)具有以下基本性能：(1) 锂离(li)子(zi)在负(fu)极基体中的(de)(de)插入氧
2022-10-27
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