2023-03-28
很多小伙伴发现(xian)(xian)自(zi)己的电动车或者手机在(zai)冬天(tian)的时候续航时间明显缩短。去检测(ce)后发现(xian)(xian)电池(chi)并没(mei)有任何问题,那么(me)到底是什么(me)原(yuan)因导致(zhi)锂电池(chi)在(zai)低温情况下(xia)续航变小的原(yuan)因呢?
深圳市(shi)山木新(xin)能(neng)源介绍(shao)到(dao)锂(li)电池在冬天续航减少(shao)的(de)原因(yin)有以下(xia)几个原因(yin):
1.低(di)温环境(jing)下,电(dian)解液的黏度增大(da),甚(shen)至部分凝固,导(dao)致锂离子(zi)电(dian)池(chi)的导(dao)电(dian)率下降(jiang)。从而影响电(dian)子(zi)在电(dian)池(chi)内部的流通降(jiang)低(di)了电(dian)子(zi)活性(xing)
2由于低(di)温环境下(xia)锂离子电池的负极无法提供足够的空间(jian),导致(zhi)析(xi)出锂结晶在表面,无(wu)法进(jin)入(ru)到(dao)内部,从而导致部分锂(li)元(yuan)素无(wu)法发挥作用
3. 。由于析出的金属锂与电(dian)解液反应,其产物(wu)沉积导致固(gu)态电(dian)解质界面厚(hou)度增加。相对(dui)用的内(nei)阻(zu)也随(sui)之增加(jia)。
深圳市山木新(xin)能(neng)源是一家专业从事(shi)锂电(dian)(dian)池(chi)研发生产的(de)高新(xin)技(ji)术(shu)企(qi)业,对低(di)温(wen)锂电(dian)(dian)池(chi)、高温(wen)锂电(dian)(dian)池(chi)有着丰富的(de)技(ji)术(shu)经验。山木新(xin)能源从电(dian)(dian)池(chi)结构以(yi)及电(dian)(dian)池(chi)材(cai)料上着手进行(xing)改善,从而提升锂电(dian)(dian)池(chi)在低(di)温(wen)情况(kuang)下的(de)稳定(ding)性。
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低(di)温(wen)(wen)锂(li)离(li)(li)子(zi)电(dian)池(chi)包括(kuo)低(di)温(wen)(wen)18650锂(li)电(dian)池(chi)、低(di)温(wen)(wen)软包聚合物锂(li)电(dian)池(chi)和低(di)温(wen)(wen)磷(lin)酸铁锂(li)电(dian)池(chi)。每种(zhong)低(di)温(wen)(wen)电(dian)池(chi)都(dou)有自(zi)己的(de)优缺点。因此,有必要根(gen)据实际设备的(de)应用要求来(lai)说明哪种(zhong)低(di)温(wen)(wen)锂(li)离(li)(li)子(zi)电(dian)池(chi)。耐低(di)温(wen)(wen)锂(li)离(li)(li)子(zi)电(dian)池(chi)根(gen)据电(dian)池(chi)单体外壳(qiao)封装(zhuang)分为钢(gang)壳(qiao)圆柱形耐低(di)温(wen)(wen)锂(li)离(li)(li)子(zi)电(dian)池(chi)和铝质新(xin)型薄(bo)膜
钛(tai)酸(suan)(suan)锂(li)电(dian)(dian)(dian)池的(de)胀气行业(ye)有三种提法:一是(shi)钛(tai)酸(suan)(suan)锂(li)材料易(yi)吸(xi)水(shui),吸(xi)附后的(de)水(shui)容易(yi)变(bian)成结晶(jing)水(shui)。烘烤电(dian)(dian)(dian)池极(ji)片和电(dian)(dian)(dian)池芯(xin)时,水(shui)分不易(yi)去(qu)除,导致结晶(jing)水(shui)与电(dian)(dian)(dian)解液反应(ying)产生气体;二是(shi)电(dian)(dian)(dian)解液对(dui)钛(tai)酸(suan)(suan)锂(li)电(dian)(dian)(dian)极(ji)表(biao)面(mian)有较(jiao)高的(de)还(hai)原(yuan)反应(ying)活(huo)性(xing),且(qie)钛(tai)酸(suan)(suan)锂(li)颗粒表(biao)面(mian)可能具有催化活(huo)性(xing)点,催化电(dian)(dian)(dian)解质溶(rong)剂的(de)
聚合物锂离子电池(chi)(chi)的(de)激活问题(ti)一(yi)直存在争议。有网(wang)友(you)认为一(yi)般锂离子电池(chi)(chi)不(bu)需要(yao)激活,假设电池(chi)(chi)搁置时(shi)(shi)间太长,可以(yi)充电完(wan)毕后(hou)再充电几(ji)个小(xiao)时(shi)(shi)。初的(de)镍(nie)镉电池(chi)(chi)充电三次(ci)12小(xiao)时(shi)(shi),锂离子电池(chi)(chi)则不(bu)然,因为它(ta)们没(mei)有记忆效(xiao)应(ying)。有专家说(shuo)过:一(yi)般的(de)工艺需要(yao)一(yi)段(duan)时(shi)(shi)间进行小(xiao)电流的(de)充电
锂电(dian)(dian)(dian)池(chi)的(de)(de)价(jia)(jia)格因品牌、型号、容(rong)(rong)量(liang)(liang)、制造(zao)工艺等因素而异。一般来说,锂电(dian)(dian)(dian)池(chi)的(de)(de)价(jia)(jia)格与它(ta)(ta)的(de)(de)容(rong)(rong)量(liang)(liang)和(he)电(dian)(dian)(dian)压(ya)(ya)有关。例(li)如,如果一种(zhong)(zhong)锂电(dian)(dian)(dian)池(chi)的(de)(de)电(dian)(dian)(dian)压(ya)(ya)是3.6伏特(te),而它(ta)(ta)的(de)(de)容(rong)(rong)量(liang)(liang)是1000毫(hao)安时(shi),那(nei)么它(ta)(ta)的(de)(de)价(jia)(jia)格可能(neng)(neng)在100美元(yuan)(yuan)到150美元(yuan)(yuan)之(zhi)间。如果一种(zhong)(zhong)锂电(dian)(dian)(dian)池(chi)的(de)(de)电(dian)(dian)(dian)压(ya)(ya)是4.2伏特(te),而它(ta)(ta)的(de)(de)容(rong)(rong)量(liang)(liang)是2000毫(hao)安时(shi),那(nei)么它(ta)(ta)的(de)(de)价(jia)(jia)格可能(neng)(neng)在150美元(yuan)(yuan)到200美元(yuan)(yuan)之(zhi)间。需...
谁(shei)才是碳酸(suan)锂电池原材(cai)料(liao)价格暴涨(zhang)的(de)幕后推(tui)手(shou)?不容置疑,全球新能源汽(qi)车(che)产业(ye)正(zheng)处在(zai)一(yi)个迅猛(meng)发(fa)展的(de)新时期。新能源汽(qi)车(che)的(de)飞速发(fa)展,对碳酸(suan)锂的(de)市(shi)场需求(qiu)暴增,特别对作(zuo)为生产锂电池正(zheng)极材(cai)料(liao)及其电解液的(de)核心原料(liao)电池级碳酸(suan)锂高度依赖(lai)。市(shi)场需求(qiu)上(shang)涨(zhang)直(zhi)接推(tui)动其价格水涨(zhang)船高。
一、锂电(dian)(dian)池(chi)(chi)(chi)的(de)优(you)点1、与其(qi)(qi)它类型(xing)的(de)充(chong)电(dian)(dian)电(dian)(dian)池(chi)(chi)(chi)相(xiang)比,其(qi)(qi)的(de)能量密度更高,能储存更多(duo)能力(li);2、工作电(dian)(dian)压(ya)高,锂电(dian)(dian)池(chi)(chi)(chi)的(de)电(dian)(dian)压(ya)常(chang)见(jian)有3.7V,镍氢电(dian)(dian)池(chi)(chi)(chi)或镍镉电(dian)(dian)池(chi)(chi)(chi)的(de)电(dian)(dian)压(ya)常(chang)见(jian)为1.2V,说明(ming)可(ke)(ke)使用单节电(dian)(dian)池(chi)(chi)(chi);3、锂电(dian)(dian)池(chi)(chi)(chi)的(de)自放(fang)电(dian)(dian)率低于其(qi)(qi)他类型(xing)的(de)可(ke)(ke)充(chong)电(dian)(dian)电(dian)(dian)池(chi)(chi)(chi),说明(ming)其(qi)(qi)能保(bao)持更长的(de)工