login_恒达娱乐「一家高质量的游戏平台」怎么检测锂电池保护板-锂电池保护板常见异常及注意事项文章-KIA MOS管

怎(zen)么检测(ce)锂电池(chi)保护(hu)板-锂电池(chi)保护(hu)板常见异常及注意事项文章-KIA MOS管(guan)

信息来源：本站　日(ri)期：2018-07-06　

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锂电池保护板简介

锂电(dian)(dian)(dian)(dian)(dian)池(chi)保(bao)(bao)护(hu)板是(shi)对串(chuan)联锂电(dian)(dian)(dian)(dian)(dian)池(chi)组的充(chong)放电(dian)(dian)(dian)(dian)(dian)保(bao)(bao)护(hu)；在充(chong)满电(dian)(dian)(dian)(dian)(dian)时能保(bao)(bao)证各(ge)单(dan)体电(dian)(dian)(dian)(dian)(dian)池(chi)之间(jian)的电(dian)(dian)(dian)(dian)(dian)压(ya)差(cha)异小于设定值（一般±20mV），实现电(dian)(dian)(dian)(dian)(dian)池(chi)组各(ge)单(dan)体电(dian)(dian)(dian)(dian)(dian)池(chi)的均充(chong)，有效地改善了(le)串(chuan)联充(chong)电(dian)(dian)(dian)(dian)(dian)方式下的充(chong)电(dian)(dian)(dian)(dian)(dian)效果；同时检(jian)测电(dian)(dian)(dian)(dian)(dian)池(chi)组中各(ge)个(ge)单(dan)体电(dian)(dian)(dian)(dian)(dian)池(chi)的过(guo)(guo)压(ya)、欠(qian)压(ya)、过(guo)(guo)流、短路、过(guo)(guo)温状态，保(bao)(bao)护(hu)并延长电(dian)(dian)(dian)(dian)(dian)池(chi)使用寿命；欠(qian)压(ya)保(bao)(bao)护(hu)使每(mei)一单(dan)节电(dian)(dian)(dian)(dian)(dian)池(chi)在放电(dian)(dian)(dian)(dian)(dian)使用时避免(mian)电(dian)(dian)(dian)(dian)(dian)池(chi)因过(guo)(guo)放电(dian)(dian)(dian)(dian)(dian)而损坏。锂电池(chi)保护(hu)板工作原理图如下：

怎么检测锂电池保护板

锂电池保护板常见异常现象

1：不解码(ma)

2：无电压

3：无内(nei)阻

4：无(wu)电(dian)阻(zu)

5：电压低

6：内阻大

7：过(guo)流大

8：不(bu)充电

锂电池保护板的检测方法

一：检测电路

锂电(dian)(dian)池(chi)保(bao)(bao)护(hu)(hu)板(ban)(ban)对锂电(dian)(dian)池(chi)进(jin)行过(guo)(guo)充、过(guo)(guo)放(fang)、过(guo)(guo)流(liu)（充电(dian)(dian)过(guo)(guo)流(liu)、放(fang)电(dian)(dian)过(guo)(guo)流(liu)和短路）保(bao)(bao)护(hu)(hu)，有些保(bao)(bao)护(hu)(hu)板(ban)(ban)上设计有热(re)敏电(dian)(dian)阻(zu)，用于对电(dian)(dian)池(chi)进(jin)行过(guo)(guo)热(re)保(bao)(bao)护(hu)(hu)，但过(guo)(guo)热(re)保(bao)(bao)护(hu)(hu)通常是由外(wai)电(dian)(dian)路完(wan)成的，并(bing)不由保(bao)(bao)护(hu)(hu)板(ban)(ban)实现。保(bao)(bao)护(hu)(hu)板(ban)(ban)上的热(re)敏电(dian)(dian)阻(zu)仅仅是给外(wai)电(dian)(dian)路提供一个温度传感(gan)器。如(ru)果保(bao)(bao)护(hu)(hu)板(ban)(ban)不良，电(dian)(dian)池(chi)就(jiu)很(hen)容易损坏。

怎么检测锂电池保护板

二：通过万(wan)用表(biao)确(que)定电(dian)池排线接线正确(que)

1、通过(guo)用万(wan)用表(biao)黑色表(biao)笔压(ya)住B-线(xian)端子(zi) 和(he) 万(wan)用表(biao)红色表(biao)笔压(ya)信(xin)B1线(xian)端子(zi)，得到第1串电池电压(ya)是3.584V。

2、通过(guo)用(yong)万用(yong)表黑色(se)表笔压住B1线端子和(he) 万用(yong)表红色(se)表笔压信B2线端子，得到第2串电池(chi)电压是3.584V。

3、通过此方法测量，得出：

第1串电池电压：3.584V

第(di)2串电(dian)池电(dian)压：3.584V

第3串电池电压：3.585V

第4串(chuan)电池电压：3.585V

第5串电(dian)池电(dian)压(ya)：3.583V

第6串电(dian)池电(dian)压(ya)：3.583V

第7串电(dian)池电(dian)压：3.584V

此(ci)7串电(dian)(dian)(dian)(dian)压(ya)都是3.58V，排(pai)线(xian)接(jie)(jie)线(xian)正确，而且(qie)电(dian)(dian)(dian)(dian)池电(dian)(dian)(dian)(dian)压(ya)相(xiang)差低于0.002V，电(dian)(dian)(dian)(dian)池一致性好(hao)。PS：电(dian)(dian)(dian)(dian)池每(mei)串电(dian)(dian)(dian)(dian)压(ya)应是：三元锂(li)(li)(li)电(dian)(dian)(dian)(dian)压(ya)在3.0-4.2V;磷(lin)酸铁锂(li)(li)(li)电(dian)(dian)(dian)(dian)压(ya)2.0-3.6V左右(you)；钛(tai)酸锂(li)(li)(li)在1.5-2.75V左右(you)。如果有任何(he)一串电(dian)(dian)(dian)(dian)压(ya)相(xiang)差超过2V，则表明排(pai)线(xian)接(jie)(jie)错，需要(yao)重新接(jie)(jie)线(xian)。

怎么检测锂电池保护板

三：确保采样线(xian)(xian)（排线(xian)(xian)）接法(fa)正确

以7串电池(chi)8pin线做个示例(li)

B-线接电池总负(fu)极(ji)

B1线接第1串电池正(zheng)极

B2线接第2串电池正极

B3线接第3串(chuan)电池正极(ji)

B4线接第(di)4串电池正极

B5线(xian)接第5串电池(chi)正极

B6线接第6串(chuan)电池正极

B7线接第7串电池正极

PS:7串(chuan)电池第7串(chuan)的电池正(zheng)极也是总(zong)正(zheng)极，同理可类推(tui)到任何串(chuan)电池组上(shang)。

怎么检测锂电池保护板

四：测(ce)(ce)量电压(ya)正(zheng)常后，将排线插上保护(hu)板，测(ce)(ce)量保护(hu)板B-和(he)P-之(zhi)(zhi)间的电阻(zu)，电阻(zu)是0，则说明他们之(zhi)(zhi)前畅通无(wu)阻(zu)，保护(hu)板是好的。

怎么检测锂电池保护板

五：或者可通(tong)过(guo)接上B-线，测量B-和(he)电(dian)(dian)池(chi)总(zong)正(zheng)(zheng)(zheng)极的(de)电(dian)(dian)压和(he)P-和(he)电(dian)(dian)池(chi)总(zong)正(zheng)(zheng)(zheng)极的(de)电(dian)(dian)压。电(dian)(dian)压一致，说(shuo)明保(bao)护(hu)(hu)(hu)板(ban)正(zheng)(zheng)(zheng)常（保(bao)护(hu)(hu)(hu)板(ban)相当于(yu)开关，开关已经打开，电(dian)(dian)流可安全(quan)通(tong)过(guo)）示例测试得：B-到(dao)电(dian)(dian)池(chi)总(zong)正(zheng)(zheng)(zheng)极电(dian)(dian)压是25.11VP-到(dao)电(dian)(dian)池(chi)总(zong)正(zheng)(zheng)(zheng)极电(dian)(dian)压是25.11V。两(liang)个(ge)电(dian)(dian)压一致表(biao)示保(bao)护(hu)(hu)(hu)板(ban)正(zheng)(zheng)(zheng)常。如果P-通(tong)过(guo)大电(dian)(dian)流放(fang)电(dian)(dian)，会有轻微压降，保(bao)护(hu)(hu)(hu)板(ban)发热(re)（50度左右），属于(yu)正(zheng)(zheng)(zheng)常现象。

怎么检测锂电池保护板