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电池掩护板的过流掩护测试计划

电(dian)(dian)池(chi)掩(yan)护(hu)板(ban)(ban),望文生义(yi)锂电(dian)(dian)池(chi)掩(yan)护(hu)板(ban)(ban)首(shou)要(yao)是(shi)针(zhen)对可充(chong)电(dian)(dian)(普通指锂电(dian)(dian)池(chi))起掩(yan)护(hu)感(gan)化的(de)集(ji)成电(dian)(dian)路(lu)板(ban)(ban)。锂电(dian)(dian)池(chi)(可充(chong)型)之以是(shi)须要(yao)掩(yan)护(hu),是(shi)由它自(zi)身(shen)特征(zheng)决(jue)议的(de)。因为锂电(dian)(dian)池(chi)自(zi)身(shen)的(de)资料决(jue)议了(le)它不能被(bei)过(guo)(guo)充(chong)、过(guo)(guo)放、过(guo)(guo)流、短路(lu)及超低温充(chong)放电(dian)(dian),是(shi)以锂电(dian)(dian)池(chi)锂电(dian)(dian)组(zu)件总会(hui)随着一块带采样电(dian)(dian)阻(zu)的(de)掩(yan)护(hu)板(ban)(ban)和(he)一片电(dian)(dian)流保险器(qi)呈(cheng)现,如(ru)图1所示。

掩(yan)护板过流掩(yan)护节制道理

如(ru)图2所示(shi)一种(zhong)锂(li)电(dian)(dian)池掩(yan)护(hu)板的典范电(dian)(dian)路(lu),该(gai)电(dian)(dian)路(lu)接(jie)于(yu)电(dian)(dian)芯及负载(zai)之间(jian),在电(dian)(dian)池对外放电(dian)(dian)的进程中,掩(yan)护(hu)板MOS管(8205)内(nei)的两个电子(zi)开关等效(xiao)于(yu)两个电阻(zu)很小(xiao)的电阻(zu),并(bing)称为导通内(nei)阻(zu),加在G极上的(de)电压间接节制每一(yi)个开关管的(de)导通电阻(zu)的(de)巨细,当G极电压大于1V时,开关管的导通内阻很小(几十(shi)毫欧(ou)),相称(cheng)于开封闭(bi)合(he),当G极(ji)电(dian)压小于0.7V以下时,开关管的导通内阻很大(几兆欧),相称于开关断开。MOS管的导(dao)通内阻与(yu)放电(dian)电(dian)流(liu)发(fa)生的电(dian)压随负载电(dian)流(liu)增大而(er)一定增大,当该电(dian)压回升(sheng)到0.2V时(shi),便以为负(fu)载电流达到了极限值,因而遏制(zhi)掩护(hu)ICDW01)第1脚的输(shu)入电压,使第(di)1脚电压变为0VMOS管内的放电节制管封闭,堵截电芯的放电回路,将关断放电节制管,完成过电流掩护。

IT6412直流电源

上面首要先容针对电池掩护板过流(liu)掩护测(ce)试的(de)处置计划:

选(xuan)用艾德(de)克斯IT6412双极性、高(gao)机能、双通道直(zhi)流电源,CH1作为源摹拟电芯放电,CH2作为载摹拟负(fu)载过流(liu),用一台1/2 2U的(de)装备(bei)就可以完(wan)成(cheng)待测物的(de)过流掩(yan)护测试,表示图以下图3所示。

 

测试进程

一、将待测物电池(chi)掩护(hu)板串在电源通道(dao)-负(fu)载通道(dao)回路中;

二、设定通(tong)道(dao)一(yi)CV输入(ru),电压设定值即为电池电压;

三、设(she)定通(tong)道二恒流拉(la)载过流值,摹拟负载过流环(huan)境,测试待测物的掩护特征(zheng)。

 

 

艾(ai)德克斯IT6400系列(lie)电(dian)(dian)(dian)源(yuan)因其怪异(yi)的(de)双极(ji)性设想,具(ju)有电(dian)(dian)(dian)池(chi)(chi)充电(dian)(dian)(dian)、电(dian)(dian)(dian)池(chi)(chi)放(fang)电(dian)(dian)(dian)、电(dian)(dian)(dian)池(chi)(chi)摹拟等一(yi)系列(lie)壮(zhuang)大的(de)电(dian)(dian)(dian)池(chi)(chi)测(ce)试(shi)功效,同时(shi)超快的(de)静态呼应时(shi)候、超高的(de)电(dian)(dian)(dian)流剖析(xi)度,能(neng)为便携式电(dian)(dian)(dian)池(chi)(chi)供(gong)(gong)电(dian)(dian)(dian)产物测(ce)试(shi)、挪(nuo)动电(dian)(dian)(dian)源(yuan)测(ce)试(shi)及电(dian)(dian)(dian)池(chi)(chi)测(ce)试(shi)等供(gong)(gong)给高精度高靠得住性的(de)测(ce)试(shi)计划。一(yi)台仪(yi)器可完成多(duo)种用处,精简测(ce)试(shi)装备(bei),优化(hua)测(ce)试(shi)流程。

 


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