锂电(dian)池(chi)(chi)组-锂电(dian)池(chi)(chi)组均衡充电(dian)方法及(ji)计算锂电(dian)池(chi)(chi)组中几串(chuan)几并-KIA MOS管
信(xin)息来(lai)源：本站 日期：2018-05-24
随着(zhe)锂电(dian)池(chi)技术的(de)不(bu)断(duan)发展，已广泛(fan)的(de)应(ying)用(yong)(yong)于(yu)我(wo)们(men)的(de)日常(chang)生活中(zhong)，越(yue)来越(yue)受到消费者的(de)青睐。其(qi)应(ying)用(yong)(yong)范围已经(jing)从我(wo)们(men)日常(chang)生活中(zhong)扩展到了工业(ye)领域(yu)和交通领域(yu)之中(zhong)，它不(bu)仅应(ying)用(yong)(yong)于(yu)类似于(yu)笔记本(ben)电(dian)脑，随身CD等一些数码产品(pin)之中(zhong)，我(wo)们(men)日常(chang)出行(xing)所使用(yong)(yong)的(de)电(dian)动自(zi)行(xing)车中(zhong)，其(qi)中(zhong)一部分也已经(jing)开始使用(yong)(yong)锂电(dian)池(chi)组。而在一些商场中(zhong)，以及(ji)野外工作所使用(yong)(yong)的(de)后备电(dian)源(yuan)也是锂电(dian)池(chi)组，而且飞机(ji)中(zhong)的(de)一部分电(dian)量来源(yuan)也使用(yong)(yong)的(de)是锂电(dian)池(chi)组。
交通动力电源
电(dian)力储能电(dian)源
移动(dong)通信(xin)电源(yuan)
新(xin)能源储能动(dong)力电源
航天军工电源
答案1：很简单，串(chuan)(chuan)联增加电(dian)(dian)(dian)压，并(bing)联增加容(rong)量，三元锂(li)标准电(dian)(dian)(dian)压3.7v，充满(man)4.2v，三串(chuan)(chuan)就(jiu)是12v，48v就(jiu)需(xu)要(yao)(yao)四个三串(chuan)(chuan)，但是电(dian)(dian)(dian)动车(che)铅(qian)酸电(dian)(dian)(dian)池充满(man)电(dian)(dian)(dian)58v最(zui)有，所以(yi)锂(li)电(dian)(dian)(dian)也需(xu)要(yao)(yao)达到58v左右，这样就(jiu)需(xu)要(yao)(yao)14串(chuan)(chuan)到58.8v，14乘以(yi)4.2，铁锂(li)充满(man)电(dian)(dian)(dian)上3.4v左右，需(xu)要(yao)(yao)四串(chuan)(chuan)组12v，48v就(jiu)需(xu)要(yao)(yao)16串(chuan)(chuan)，以(yi)此类推60v就(jiu)需(xu)要(yao)(yao)20串(chuan)(chuan)，并(bing)联同型号同容(rong)量，10ah电(dian)(dian)(dian)芯(xin)两块并(bing)联就(jiu)是20ah，48v三元锂(li)就(jiu)需(xu)要(yao)(yao)14+14块10ah电(dian)(dian)(dian)芯(xin)，最(zui)后14块并(bing)联好的串(chuan)(chuan)联就(jiu)组成48v20ah锂(li)电(dian)(dian)(dian)池了
答案2：其实是很(hen)简单的，比(bi)如48伏(fu)是指电(dian)(dian)压，通常三(san)元锂电(dian)(dian)池是指48除以3.7这样十(shi)三(san)串(chuan)和十(shi)四串(chuan)都是算48伏(fu)，十(shi)三(san)串(chuan)使用54.6伏(fu)的充(chong)(chong)电(dian)(dian)器(qi)充(chong)(chong)电(dian)(dian)，十(shi)四串(chuan)使用58.8伏(fu)充(chong)(chong)电(dian)(dian)器(qi)充(chong)(chong)电(dian)(dian)。至于20安(an)时是指电(dian)(dian)池的容(rong)量(liang)，如果是单只18650电(dian)(dian)芯(xin)每只是2000毫安(an)的容(rong)量(liang)，这样就是2安(an)时每只，十(shi)只电(dian)(dian)芯(xin)并在(zai)一起(qi)就是20安(an)时，整组电(dian)(dian)池就是14串(chuan)乘以10只电(dian)(dian)芯(xin)＝140只电(dian)(dian)芯(xin)。
60伏(fu)(fu)也(ye)是(shi)一样的道(dao)理，通常(chang)16-17串都是(shi)算(suan)60伏(fu)(fu)，如是(shi)60伏(fu)(fu)20安时单只电芯(xin)容量是(shi)2000毫安，就是(shi)16-17乘以10，160-170个电芯(xin)。
铁(tie)(tie)锂电(dian)(dian)池(chi)就是(shi)总电(dian)(dian)压除以3.2，比如48伏的(de)(de)(de)铁(tie)(tie)锂是(shi)指15-16串(chuan)的(de)(de)(de)算法(fa)都是(shi)一样的(de)(de)(de)，只是(shi)铁(tie)(tie)锂比三(san)(san)元锂多几串(chuan)电(dian)(dian)池(chi)，再一个铁(tie)(tie)锂和三(san)(san)元锂充电(dian)(dian)电(dian)(dian)压也都是(shi)不(bu)一样的(de)(de)(de)，大家(jia)购买的(de)(de)(de)时候多跟老板(ban)沟通。
常用(yong)的(de)(de)均(jun)衡充(chong)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)技术包括恒(heng)定分流(liu)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻均(jun)衡充(chong)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)、通(tong)断(duan)分流(liu)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻均(jun)衡充(chong)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)、平均(jun)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)均(jun)衡充(chong)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)、开(kai)关电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容均(jun)衡充(chong)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)、降压(ya)型变换器均(jun)衡充(chong)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)、电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)感均(jun)衡充(chong)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)等。成组(zu)的(de)(de)锂电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)串联充(chong)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)时，应保(bao)证每节(jie)(jie)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)均(jun)衡充(chong)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，否则使用(yong)过(guo)程(cheng)中会影响整组(zu)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)的(de)(de)性能(neng)和(he)寿命。而(er)现(xian)有的(de)(de)单节(jie)(jie)锂电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)保(bao)护芯片(pian)(pian)均(jun)不含均(jun)衡充(chong)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)控制(zhi)功(gong)能(neng)，多(duo)节(jie)(jie)锂电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)保(bao)护芯片(pian)(pian)均(jun)衡充(chong)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)控制(zhi)功(gong)能(neng)需(xu)要外(wai)接CPU;通(tong)过(guo)和(he)保(bao)护芯片(pian)(pian)的(de)(de)串行通(tong)讯（如(ru)I2C总线）来实(shi)现(xian)，加大了保(bao)护电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)的(de)(de)复杂程(cheng)度(du)和(he)设计难度(du)、降低了系统的(de)(de)效率和(he)可靠性、增加了功(gong)耗(hao)。
本(ben)文针对动力锂(li)电(dian)(dian)池(chi)(chi)成组(zu)(zu)使用，各节(jie)锂(li)电(dian)(dian)池(chi)(chi)均(jun)要求充(chong)电(dian)(dian)过电(dian)(dian)压、放电(dian)(dian)欠电(dian)(dian)压、过流、短路的(de)保(bao)(bao)(bao)护(hu)，充(chong)电(dian)(dian)过程中要实现整组(zu)(zu)电(dian)(dian)池(chi)(chi)均(jun)衡充(chong)电(dian)(dian)的(de)问(wen)题(ti)，介(jie)绍了一种采(cai)用单节(jie)锂(li)电(dian)(dian)池(chi)(chi)保(bao)(bao)(bao)护(hu)芯片对任意串联数的(de)成组(zu)(zu)锂(li)电(dian)(dian)池(chi)(chi)进行保(bao)(bao)(bao)护(hu)的(de)含均(jun)衡充(chong)电(dian)(dian)功(gong)能(neng)的(de)电(dian)(dian)池(chi)(chi)组(zu)(zu)保(bao)(bao)(bao)护(hu)板的(de)设(she)计方(fang)案。仿(fang)真结果和(he)工业生产应用证(zheng)明，该(gai)保(bao)(bao)(bao)护(hu)板保(bao)(bao)(bao)护(hu)功(gong)能(neng)完善(shan)，工作稳定，性价(jia)比(bi)高，均(jun)衡充(chong)电(dian)(dian)误差小于50mV。
采(cai)用单节锂电(dian)池保护(hu)芯片设计的(de)具备(bei)均衡充电(dian)能力的(de)锂电(dian)池组保护(hu)板结(jie)构框图如下(xia)图1所示。
图1锂电池组保护板结构框(kuang)图
其中(zhong)：1为(wei)(wei)(wei)(wei)单(dan)节锂(li)(li)离子电(dian)(dian)(dian)(dian)池(chi)；2为(wei)(wei)(wei)(wei)充(chong)(chong)(chong)电(dian)(dian)(dian)(dian)过(guo)(guo)电(dian)(dian)(dian)(dian)压分(fen)(fen)流(liu)(liu)(liu)放(fang)(fang)(fang)电(dian)(dian)(dian)(dian)支(zhi)路(lu)电(dian)(dian)(dian)(dian)阻；3为(wei)(wei)(wei)(wei)分(fen)(fen)流(liu)(liu)(liu)放(fang)(fang)(fang)电(dian)(dian)(dian)(dian)支(zhi)路(lu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)用(yong)开(kai)关器(qi)(qi)件(jian)；4为(wei)(wei)(wei)(wei)过(guo)(guo)流(liu)(liu)(liu)检测(ce)保护(hu)(hu)(hu)(hu)电(dian)(dian)(dian)(dian)阻；5为(wei)(wei)(wei)(wei)省(sheng)略的(de)(de)锂(li)(li)电(dian)(dian)(dian)(dian)池(chi)保护(hu)(hu)(hu)(hu)芯(xin)片(pian)及电(dian)(dian)(dian)(dian)路(lu)连接部分(fen)(fen)；6为(wei)(wei)(wei)(wei)单(dan)节锂(li)(li)电(dian)(dian)(dian)(dian)池(chi)保护(hu)(hu)(hu)(hu)芯(xin)片(pian)（一般包括(kuo)充(chong)(chong)(chong)电(dian)(dian)(dian)(dian)控(kong)(kong)(kong)(kong)制(zhi)(zhi)引脚CO,放(fang)(fang)(fang)电(dian)(dian)(dian)(dian)控(kong)(kong)(kong)(kong)制(zhi)(zhi)引脚DO,放(fang)(fang)(fang)电(dian)(dian)(dian)(dian)过(guo)(guo)电(dian)(dian)(dian)(dian)流(liu)(liu)(liu)及短(duan)路(lu)检测(ce)引脚VM,电(dian)(dian)(dian)(dian)池(chi)正(zheng)端(duan)VDD,电(dian)(dian)(dian)(dian)池(chi)负端(duan)VSS等）；7为(wei)(wei)(wei)(wei)充(chong)(chong)(chong)电(dian)(dian)(dian)(dian)过(guo)(guo)电(dian)(dian)(dian)(dian)压保护(hu)(hu)(hu)(hu)信号经光(guang)耦隔离后(hou)形成(cheng)(cheng)并联关系(xi)驱(qu)动主(zhu)电(dian)(dian)(dian)(dian)路(lu)中(zhong)充(chong)(chong)(chong)电(dian)(dian)(dian)(dian)控(kong)(kong)(kong)(kong)制(zhi)(zhi)用(yong)MOS管栅极(ji)；8为(wei)(wei)(wei)(wei)放(fang)(fang)(fang)电(dian)(dian)(dian)(dian)欠电(dian)(dian)(dian)(dian)压、过(guo)(guo)流(liu)(liu)(liu)、短(duan)路(lu)保护(hu)(hu)(hu)(hu)信号经光(guang)耦隔离后(hou)形成(cheng)(cheng)串(chuan)联关系(xi)驱(qu)动主(zhu)电(dian)(dian)(dian)(dian)路(lu)中(zhong)放(fang)(fang)(fang)电(dian)(dian)(dian)(dian)控(kong)(kong)(kong)(kong)制(zhi)(zhi)用(yong)MOS管栅极(ji)；9为(wei)(wei)(wei)(wei)充(chong)(chong)(chong)电(dian)(dian)(dian)(dian)控(kong)(kong)(kong)(kong)制(zhi)(zhi)开(kai)关器(qi)(qi)件(jian)；10为(wei)(wei)(wei)(wei)放(fang)(fang)(fang)电(dian)(dian)(dian)(dian)控(kong)(kong)(kong)(kong)制(zhi)(zhi)开(kai)关器(qi)(qi)件(jian)；11为(wei)(wei)(wei)(wei)控(kong)(kong)(kong)(kong)制(zhi)(zhi)电(dian)(dian)(dian)(dian)路(lu)；12为(wei)(wei)(wei)(wei)主(zhu)电(dian)(dian)(dian)(dian)路(lu)；13为(wei)(wei)(wei)(wei)分(fen)(fen)流(liu)(liu)(liu)放(fang)(fang)(fang)电(dian)(dian)(dian)(dian)支(zhi)路(lu)。单(dan)节锂(li)(li)电(dian)(dian)(dian)(dian)池(chi)保护(hu)(hu)(hu)(hu)芯(xin)片(pian)数目依据锂(li)(li)电(dian)(dian)(dian)(dian)池(chi)组(zu)电(dian)(dian)(dian)(dian)池(chi)数目确定，串(chuan)联使用(yong)，分(fen)(fen)别对所对应单(dan)节锂(li)(li)电(dian)(dian)(dian)(dian)池(chi)的(de)(de)充(chong)(chong)(chong)放(fang)(fang)(fang)电(dian)(dian)(dian)(dian)、过(guo)(guo)流(liu)(liu)(liu)、短(duan)路(lu)状态进行保护(hu)(hu)(hu)(hu)。该(gai)系(xi)统在充(chong)(chong)(chong)电(dian)(dian)(dian)(dian)保护(hu)(hu)(hu)(hu)的(de)(de)同(tong)时，通过(guo)(guo)保护(hu)(hu)(hu)(hu)芯(xin)片(pian)控(kong)(kong)(kong)(kong)制(zhi)(zhi)分(fen)(fen)流(liu)(liu)(liu)放(fang)(fang)(fang)电(dian)(dian)(dian)(dian)支(zhi)路(lu)开(kai)关器(qi)(qi)件(jian)的(de)(de)通断实(shi)(shi)现(xian)均衡(heng)充(chong)(chong)(chong)电(dian)(dian)(dian)(dian)，该(gai)方案有(you)别于(yu)传(chuan)统的(de)(de)在充(chong)(chong)(chong)电(dian)(dian)(dian)(dian)器(qi)(qi)端(duan)实(shi)(shi)现(xian)均衡(heng)充(chong)(chong)(chong)电(dian)(dian)(dian)(dian)的(de)(de)做(zuo)法，降低(di)了锂(li)(li)电(dian)(dian)(dian)(dian)池(chi)组(zu)充(chong)(chong)(chong)电(dian)(dian)(dian)(dian)器(qi)(qi)设(she)计(ji)应用(yong)的(de)(de)成(cheng)(cheng)本(ben)。
当锂电池(chi)组(zu)充(chong)电时，外接(jie)(jie)电源正负(fu)极分别接(jie)(jie)电池(chi)组(zu)正负(fu)极BAT+和BAT-两端(duan)，充(chong)电电流(liu)流(liu)经电池(chi)组(zu)正极BAT+、电池(chi)组(zu)中(zhong)单(dan)节锂电池(chi)1~N、放电控制开关(guan)(guan)器(qi)件、充(chong)电控制开关(guan)(guan)器(qi)件、电池(chi)组(zu)负(fu)极BAT-,电流(liu)流(liu)向如图(tu)2所(suo)示。
图2锂电(dian)池组充(chong)电(dian)电(dian)路
系统中(zhong)控(kong)(kong)制电(dian)(dian)(dian)路(lu)部(bu)分(fen)单(dan)节锂(li)(li)电(dian)(dian)(dian)池(chi)保(bao)护(hu)芯片的(de)充(chong)电(dian)(dian)(dian)过电(dian)(dian)(dian)压(ya)保(bao)护(hu)控(kong)(kong)制信(xin)号经(jing)光耦(ou)隔(ge)离(li)后并联输(shu)出，为主电(dian)(dian)(dian)路(lu)中(zhong)充(chong)电(dian)(dian)(dian)开关(guan)器件的(de)导(dao)通(tong)提供栅极(ji)电(dian)(dian)(dian)压(ya)；如某一节或几(ji)节锂(li)(li)电(dian)(dian)(dian)池(chi)在充(chong)电(dian)(dian)(dian)过程中(zhong)先进入过电(dian)(dian)(dian)压(ya)保(bao)护(hu)状态，则由(you)过电(dian)(dian)(dian)压(ya)保(bao)护(hu)信(xin)号控(kong)(kong)制并联在单(dan)节锂(li)(li)电(dian)(dian)(dian)池(chi)正负(fu)极(ji)两端的(de)分(fen)流放电(dian)(dian)(dian)支路(lu)放电(dian)(dian)(dian)，同时将串接(jie)在充(chong)电(dian)(dian)(dian)回路(lu)中(zhong)的(de)对应单(dan)体锂(li)(li)电(dian)(dian)(dian)池(chi)断离(li)出充(chong)电(dian)(dian)(dian)回路(lu)。
锂(li)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)组串(chuan)联(lian)充(chong)(chong)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)时，忽略(lve)单(dan)节电(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)容量差(cha)(cha)别的(de)(de)影响(xiang)，一(yi)般内(nei)阻较小的(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)先(xian)(xian)充(chong)(chong)满。此时，相应的(de)(de)过(guo)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)压保护信号控制分流(liu)(liu)(liu)放(fang)(fang)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)支(zhi)路(lu)(lu)的(de)(de)开关器(qi)件闭合，在原电(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)两(liang)端并(bing)联(lian)上一(yi)个分流(liu)(liu)(liu)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻。根据电(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)的(de)(de)PNGV等效电(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)模型(xing)，此时分流(liu)(liu)(liu)支(zhi)路(lu)(lu)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻相当于先(xian)(xian)充(chong)(chong)满的(de)(de)单(dan)节锂(li)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)的(de)(de)负(fu)载，该电(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)通过(guo)其放(fang)(fang)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)，使电(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)端电(dian)(dian)(dian)(dian)(dian)(dian)(dian)压维(wei)持在充(chong)(chong)满状(zhuang)态附近一(yi)个极小的(de)(de)范(fan)围内(nei)。假设第1节锂(li)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)先(xian)(xian)充(chong)(chong)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)完(wan)成，进(jin)入过(guo)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)压保护状(zhuang)态，则(ze)主(zhu)(zhu)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)及分流(liu)(liu)(liu)放(fang)(fang)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)支(zhi)路(lu)(lu)中电(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)流(liu)(liu)(liu)向如图3所(suo)(suo)示。当所(suo)(suo)有(you)单(dan)节电(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)均(jun)充(chong)(chong)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)进(jin)入过(guo)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)压保护状(zhuang)态时，全部(bu)单(dan)节锂(li)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)(chi)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)压大小在误差(cha)(cha)范(fan)围内(nei)完(wan)全相等，各节保护芯片充(chong)(chong)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)保护控制信号均(jun)变低(di)，无法(fa)为主(zhu)(zhu)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)中的(de)(de)充(chong)(chong)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)控制开关器(qi)件提供(gong)栅极偏压，使其关断(duan)(duan)，主(zhu)(zhu)回(hui)路(lu)(lu)断(duan)(duan)开，即实现均(jun)衡充(chong)(chong)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)，充(chong)(chong)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)过(guo)程完(wan)成。
图3主电(dian)路及分流(liu)放电(dian)支路
单节电(dian)(dian)(dian)(dian)池(chi)两端(duan)并接的放电(dian)(dian)(dian)(dian)支路电(dian)(dian)(dian)(dian)阻可(ke)根据锂(li)电(dian)(dian)(dian)(dian)池(chi)充(chong)电(dian)(dian)(dian)(dian)器的充(chong)电(dian)(dian)(dian)(dian)电(dian)(dian)(dian)(dian)压大(da)小以及锂(li)电(dian)(dian)(dian)(dian)池(chi)的参数和(he)放电(dian)(dian)(dian)(dian)电(dian)(dian)(dian)(dian)流的大(da)小计(ji)算得出(chu)。均(jun)衡(heng)电(dian)(dian)(dian)(dian)流应(ying)合(he)理选择(ze)，如果太小，均(jun)衡(heng)效果不(bu)明显；如果太大(da)，系统的能量损耗大(da)，均(jun)衡(heng)效率低，对(dui)锂(li)电(dian)(dian)(dian)(dian)池(chi)组热管理要求高，一般电(dian)(dian)(dian)(dian)流大(da)小可(ke)设(she)计(ji)在(zai)50~100mA之间(jian)。
当电(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)组(zu)放(fang)电(dian)(dian)(dian)(dian)(dian)时，外接负载分别(bie)接电(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)组(zu)正负极(ji)BAT+和BAT-两端，放(fang)电(dian)(dian)(dian)(dian)(dian)电(dian)(dian)(dian)(dian)(dian)流(liu)流(liu)经(jing)电(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)组(zu)负极(ji)BAT-、充电(dian)(dian)(dian)(dian)(dian)控(kong)(kong)(kong)制(zhi)(zhi)开(kai)(kai)关(guan)器(qi)(qi)(qi)件(jian)、放(fang)电(dian)(dian)(dian)(dian)(dian)控(kong)(kong)(kong)制(zhi)(zhi)开(kai)(kai)关(guan)器(qi)(qi)(qi)件(jian)、电(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)组(zu)中(zhong)单(dan)(dan)节(jie)(jie)锂电(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)N~1和电(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)组(zu)正极(ji)BAT+,电(dian)(dian)(dian)(dian)(dian)流(liu)流(liu)向(xiang)如图4所示。系统中(zhong)控(kong)(kong)(kong)制(zhi)(zhi)电(dian)(dian)(dian)(dian)(dian)路(lu)(lu)部分单(dan)(dan)节(jie)(jie)锂电(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)保(bao)(bao)(bao)护(hu)芯片的(de)(de)放(fang)电(dian)(dian)(dian)(dian)(dian)欠电(dian)(dian)(dian)(dian)(dian)压保(bao)(bao)(bao)护(hu)、过流(liu)和短(duan)路(lu)(lu)保(bao)(bao)(bao)护(hu)控(kong)(kong)(kong)制(zhi)(zhi)信号经(jing)光耦(ou)隔离(li)后串联输出，为主(zhu)电(dian)(dian)(dian)(dian)(dian)路(lu)(lu)中(zhong)放(fang)电(dian)(dian)(dian)(dian)(dian)开(kai)(kai)关(guan)器(qi)(qi)(qi)件(jian)的(de)(de)导通提供(gong)(gong)栅极(ji)电(dian)(dian)(dian)(dian)(dian)压；一旦电(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)组(zu)在放(fang)电(dian)(dian)(dian)(dian)(dian)过程(cheng)中(zhong)遇到单(dan)(dan)节(jie)(jie)锂电(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)欠电(dian)(dian)(dian)(dian)(dian)压或者过流(liu)和短(duan)路(lu)(lu)等(deng)特殊情(qing)况，对(dui)应的(de)(de)单(dan)(dan)节(jie)(jie)锂电(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)放(fang)电(dian)(dian)(dian)(dian)(dian)保(bao)(bao)(bao)护(hu)控(kong)(kong)(kong)制(zhi)(zhi)信号变(bian)低，无法为主(zhu)电(dian)(dian)(dian)(dian)(dian)路(lu)(lu)中(zhong)的(de)(de)放(fang)电(dian)(dian)(dian)(dian)(dian)控(kong)(kong)(kong)制(zhi)(zhi)开(kai)(kai)关(guan)器(qi)(qi)(qi)件(jian)提供(gong)(gong)栅极(ji)偏压，使其关(guan)断(duan)(duan)，主(zhu)回路(lu)(lu)断(duan)(duan)开(kai)(kai)，即(ji)结束放(fang)电(dian)(dian)(dian)(dian)(dian)使用(yong)过程(cheng)。
图4电(dian)池(chi)组(zu)放电(dian)电(dian)路
一般锂电(dian)池采用恒流-恒压（TAPER）型充电(dian)控制，恒压充电(dian)时，充电(dian)电(dian)流近似(si)指数规律减小。系统中充放电(dian)主回路(lu)(lu)的(de)开关器件可根据外(wai)部电(dian)路(lu)(lu)要求满(man)足的(de)最大工(gong)作(zuo)电(dian)流和(he)工(gong)作(zuo)电(dian)压选型。
控制电(dian)(dian)路(lu)的(de)单(dan)节(jie)锂电(dian)(dian)池保护(hu)芯片可(ke)根据待(dai)保护(hu)的(de)单(dan)节(jie)锂电(dian)(dian)池的(de)电(dian)(dian)压等级、保护(hu)延迟(chi)时间等选型(xing)。分(fen)流放电(dian)(dian)支路(lu)电(dian)(dian)阻(zu)可(ke)采用(yong)功率电(dian)(dian)阻(zu)或电(dian)(dian)阻(zu)网(wang)络实现。这里采用(yong)电(dian)(dian)阻(zu)网(wang)络实现分(fen)流放电(dian)(dian)支路(lu)电(dian)(dian)阻(zu)较为合(he)理(li)，可(ke)以(yi)有效(xiao)消除电(dian)(dian)阻(zu)偏差的(de)影响，此外，还(hai)能起到降低(di)热功耗的(de)作(zuo)用(yong)。
根据上述均(jun)衡(heng)充(chong)电(dian)(dian)保护(hu)(hu)板电(dian)(dian)路工作(zuo)(zuo)的基本原理，在Matlab/Simulink环境下(xia)搭建了(le)系(xi)统仿(fang)真模型(xing)，模拟锂(li)电(dian)(dian)池组充(chong)放电(dian)(dian)过程中保护(hu)(hu)板工作(zuo)(zuo)的情况，验证该设计方案的可(ke)行性(xing)。为简单(dan)起见，给出(chu)了(le)锂(li)电(dian)(dian)池组仅(jin)由2节锂(li)电(dian)(dian)池串(chuan)联的仿(fang)真模型(xing)，如图5所(suo)示。
图(tu)5 2节锂电池串联均充保护仿真模(mo)型
模型中(zhong)用(yong)受控(kong)电压(ya)源代替单(dan)节锂电池(chi)(chi)，模拟电池(chi)(chi)充放电的(de)(de)情况。图5中(zhong)，Rs为(wei)(wei)(wei)(wei)串联电池(chi)(chi)组的(de)(de)电池(chi)(chi)总内阻，RL为(wei)(wei)(wei)(wei)负载电阻，Rd为(wei)(wei)(wei)(wei)分流(liu)放电支路电阻。所采用(yong)的(de)(de)单(dan)节锂电池(chi)(chi)保(bao)护芯片S28241封装(zhuang)为(wei)(wei)(wei)(wei)一个子系统(tong)，使整体模型表达时更为(wei)(wei)(wei)(wei)简洁(jie)。
保护(hu)芯片子系(xi)统(tong)(tong)模(mo)(mo)(mo)(mo)(mo)型(xing)主要(yao)用逻辑运算模(mo)(mo)(mo)(mo)(mo)块(kuai)、符号函数(shu)模(mo)(mo)(mo)(mo)(mo)块(kuai)、一维查表(biao)模(mo)(mo)(mo)(mo)(mo)块(kuai)、积分(fen)模(mo)(mo)(mo)(mo)(mo)块(kuai)、延时(shi)模(mo)(mo)(mo)(mo)(mo)块(kuai)、开(kai)关(guan)模(mo)(mo)(mo)(mo)(mo)块(kuai)、数(shu)学运算模(mo)(mo)(mo)(mo)(mo)块(kuai)等模(mo)(mo)(mo)(mo)(mo)拟了保护(hu)动(dong)作的(de)(de)时(shi)序与(yu)逻辑。由于仿(fang)真(zhen)(zhen)(zhen)(zhen)环境(jing)与(yu)真(zhen)(zhen)(zhen)(zhen)实(shi)电(dian)(dian)(dian)路存在(zai)一定的(de)(de)差别，仿(fang)真(zhen)(zhen)(zhen)(zhen)时(shi)不需要(yao)滤波(bo)和(he)强弱电(dian)(dian)(dian)隔(ge)离，而且多余的(de)(de)模(mo)(mo)(mo)(mo)(mo)块(kuai)容易导致仿(fang)真(zhen)(zhen)(zhen)(zhen)时(shi)间的(de)(de)冗长。因此，在(zai)实(shi)际仿(fang)真(zhen)(zhen)(zhen)(zhen)过程中，去除了滤波(bo)、光耦隔(ge)离、电(dian)(dian)(dian)平调理(li)等电(dian)(dian)(dian)路，并把为大电(dian)(dian)(dian)流分(fen)流设计的(de)(de)电(dian)(dian)(dian)阻网络改为单电(dian)(dian)(dian)阻，降(jiang)低了仿(fang)真(zhen)(zhen)(zhen)(zhen)系(xi)统(tong)(tong)的(de)(de)复杂程度。建(jian)立完整的(de)(de)系(xi)统(tong)(tong)仿(fang)真(zhen)(zhen)(zhen)(zhen)模(mo)(mo)(mo)(mo)(mo)型(xing)时(shi)，要(yao)注意不同模(mo)(mo)(mo)(mo)(mo)块(kuai)的(de)(de)输入输出数(shu)据和(he)信(xin)号类(lei)(lei)型(xing)可(ke)能存在(zai)差异，必须正确排列模(mo)(mo)(mo)(mo)(mo)块(kuai)的(de)(de)连接顺序，必要(yao)时(shi)进(jin)行数(shu)据类(lei)(lei)型(xing)的(de)(de)转(zhuan)换(huan)，模(mo)(mo)(mo)(mo)(mo)型(xing)中用电(dian)(dian)(dian)压检测模(mo)(mo)(mo)(mo)(mo)块(kuai)实(shi)现了强弱信(xin)号的(de)(de)转(zhuan)换(huan)连接问题(ti)。
仿(fang)真(zhen)模(mo)型(xing)中受(shou)控电(dian)压(ya)源(yuan)的给定信号在波形(xing)大体(ti)一致(zhi)的前提下可(ke)(ke)有微小(xiao)差别(bie)，以代表(biao)电(dian)池个体(ti)充放电(dian)的差异。图6为电(dian)池组(zu)中单节电(dian)池电(dian)压(ya)检测(ce)仿(fang)真(zhen)结果(guo)，可(ke)(ke)见采用过流放电(dian)支路均充的办法，该电(dian)路可(ke)(ke)正常工作。
图6 锂(li)电(dian)池电(dian)压(ya)检测仿真结果
实(shi)际应用(yong)中，针对某品牌电(dian)(dian)(dian)(dian)(dian)(dian)动自行车生产厂(chang)的(de)需求，设计(ji)实(shi)现了(le)2组并(bing)联(lian)、10节串联(lian)的(de)36V8A.h锰酸(suan)锂动力电(dian)(dian)(dian)(dian)(dian)(dian)池组保护板，其(qi)中单节锂电(dian)(dian)(dian)(dian)(dian)(dian)池保护芯片采(cai)用(yong)日本(ben)精工公司的(de)S28241,保护板主(zhu)要由主(zhu)电(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)、控制电(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)、分(fen)流(liu)放(fang)(fang)电(dian)(dian)(dian)(dian)(dian)(dian)支路(lu)(lu)以及滤(lv)波、光耦隔离和电(dian)(dian)(dian)(dian)(dian)(dian)平(ping)调理(li)电(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)等(deng)部(bu)分(fen)组成(cheng)，其(qi)基(ji)本(ben)结构如图(tu)7所示(shi)。放(fang)(fang)电(dian)(dian)(dian)(dian)(dian)(dian)支路(lu)(lu)电(dian)(dian)(dian)(dian)(dian)(dian)流(liu)选择在800mA左右，采(cai)用(yong)510Ω电(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)串并(bing)联(lian)构成(cheng)电(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)网(wang)络。
图7 锂电(dian)池组保护板调试(shi)
调试(shi)(shi)工作(zuo)主要分为电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)测(ce)(ce)(ce)(ce)试(shi)(shi)和(he)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流测(ce)(ce)(ce)(ce)试(shi)(shi)两(liang)部分。电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)测(ce)(ce)(ce)(ce)试(shi)(shi)包括充(chong)(chong)(chong)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)性(xing)能检(jian)测(ce)(ce)(ce)(ce)过(guo)(guo)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)、均充(chong)(chong)(chong)以及放电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)性(xing)能检(jian)测(ce)(ce)(ce)(ce)欠(qian)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)两(liang)步。可(ke)(ke)以选择采(cai)(cai)用电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池模拟电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)供(gong)应器(qi)代替实际的(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池组(zu)(zu)进行测(ce)(ce)(ce)(ce)试(shi)(shi)，由于多节(jie)(jie)(jie)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池串联，该方案一(yi)次投入的(de)测(ce)(ce)(ce)(ce)试(shi)(shi)成本较高。也可(ke)(ke)以使用装(zhuang)配好的(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池组(zu)(zu)直接(jie)进行测(ce)(ce)(ce)(ce)试(shi)(shi)，对(dui)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池组(zu)(zu)循环(huan)充(chong)(chong)(chong)放电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，观测(ce)(ce)(ce)(ce)过(guo)(guo)压(ya)(ya)(ya)和(he)欠(qian)压(ya)(ya)(ya)时保护装(zhuang)置是否正(zheng)(zheng)常动作(zuo)，记录(lu)过(guo)(guo)充(chong)(chong)(chong)保护时各节(jie)(jie)(jie)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池的(de)实时电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)，判断均衡(heng)充(chong)(chong)(chong)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)性(xing)能。但此方案一(yi)次测(ce)(ce)(ce)(ce)试(shi)(shi)耗费时间(jian)(jian)较长。对(dui)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池组(zu)(zu)作(zuo)充(chong)(chong)(chong)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)性(xing)能检(jian)测(ce)(ce)(ce)(ce)时，采(cai)(cai)用3位半精度电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)表(biao)对(dui)10节(jie)(jie)(jie)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池的(de)充(chong)(chong)(chong)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)监测(ce)(ce)(ce)(ce)，可(ke)(ke)见(jian)各节(jie)(jie)(jie)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池都在正(zheng)(zheng)常工作(zuo)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)范围(wei)内，并且(qie)单体之间(jian)(jian)的(de)差(cha)异很(hen)小(xiao)，充(chong)(chong)(chong)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)过(guo)(guo)程中电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)偏(pian)差(cha)小(xiao)于100mV,满充(chong)(chong)(chong)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)4.2V、电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)偏(pian)差(cha)小(xiao)于50mV.电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流测(ce)(ce)(ce)(ce)试(shi)(shi)部分包括过(guo)(guo)流检(jian)测(ce)(ce)(ce)(ce)和(he)短路(lu)检(jian)测(ce)(ce)(ce)(ce)两(liang)步。过(guo)(guo)流检(jian)测(ce)(ce)(ce)(ce)可(ke)(ke)在电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻负载与(yu)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)回路(lu)间(jian)(jian)串接(jie)一(yi)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流表(biao)，缓慢减小(xiao)负载，当电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流增大到过(guo)(guo)流值时，看电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流表(biao)是否指示断流。短路(lu)检(jian)测(ce)(ce)(ce)(ce)可(ke)(ke)直接(jie)短接(jie)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池组(zu)(zu)正(zheng)(zheng)负极来(lai)观测(ce)(ce)(ce)(ce)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流表(biao)状(zhuang)(zhuang)态(tai)。在确定器(qi)件完好，电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)焊接(jie)无(wu)误的(de)前(qian)提下，也可(ke)(ke)直接(jie)通(tong)过(guo)(guo)保护板上(shang)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)指示灯的(de)状(zhuang)(zhuang)态(tai)进行电(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流测(ce)(ce)(ce)(ce)试(shi)(shi)。
实(shi)际使用中，考虑到外部干(gan)扰可能会引起电(dian)(dian)(dian)池电(dian)(dian)(dian)压不稳定的(de)(de)(de)情(qing)况，这(zhei)样(yang)会造(zao)成电(dian)(dian)(dian)压极短时(shi)间(jian)的(de)(de)(de)过压或欠压，从而(er)导(dao)致(zhi)电(dian)(dian)(dian)池保(bao)(bao)(bao)护(hu)(hu)(hu)电(dian)(dian)(dian)路错(cuo)误判断(duan)，因此(ci)在(zai)(zai)保(bao)(bao)(bao)护(hu)(hu)(hu)芯片配(pei)有相应(ying)的(de)(de)(de)延时(shi)逻辑，必要时(shi)可在(zai)(zai)保(bao)(bao)(bao)护(hu)(hu)(hu)板上(shang)添加延时(shi)电(dian)(dian)(dian)路，这(zhei)样(yang)将有效降低外部干(gan)扰造(zao)成保(bao)(bao)(bao)护(hu)(hu)(hu)电(dian)(dian)(dian)路误动作(zuo)的(de)(de)(de)可能性(xing)。由于电(dian)(dian)(dian)池组不工作(zuo)时(shi)，保(bao)(bao)(bao)护(hu)(hu)(hu)板上(shang)各开关(guan)器件(jian)处于断(duan)开状态(tai)(tai)，故静态(tai)(tai)损耗(hao)几乎为0.当(dang)系统工作(zuo)时(shi)，主要损耗(hao)为主电(dian)(dian)(dian)路中2个MOS管上(shang)的(de)(de)(de)通(tong)态(tai)(tai)损耗(hao)，当(dang)充电(dian)(dian)(dian)状态(tai)(tai)下(xia)均衡电(dian)(dian)(dian)路工作(zuo)时(shi)，分流支(zhi)路中电(dian)(dian)(dian)阻热损耗(hao)较大，但(dan)时(shi)间(jian)较短，整(zheng)体动态(tai)(tai)损耗(hao)在(zai)(zai)电(dian)(dian)(dian)池组正(zheng)常工作(zuo)的(de)(de)(de)周期内处于可以接受的(de)(de)(de)水平。
经测试，该保(bao)护电路的设计能(neng)够满足串联锂电池(chi)组保(bao)护的需(xu)要，保(bao)护功能(neng)齐全，能(neng)可靠地(di)进(jin)行过充电、过放电的保(bao)护，同(tong)时实现均衡充电功能(neng)。
根据应用(yong)的需要，在改变(bian)保(bao)护(hu)芯片(pian)型(xing)号和(he)(he)串(chuan)(chuan)联(lian)数，电路中开(kai)关器(qi)件和(he)(he)能耗元(yuan)件的功率等级(ji)(ji)之后，可(ke)对任(ren)意结构(gou)和(he)(he)电压等级(ji)(ji)的动力锂电池(chi)组(zu)实现保(bao)护(hu)和(he)(he)均充。如(ru)采用(yong)台(tai)湾富晶公(gong)司的FS361A单节锂电池(chi)保(bao)护(hu)芯片(pian)可(ke)实现3组(zu)并联(lian)、12串(chuan)(chuan)磷(lin)酸铁(tie)锂电池(chi)组(zu)保(bao)护(hu)板设计等。最终的多(duo)款工业产(chan)品价格(ge)合(he)理，经3年(nian)市场检(jian)验无返修产(chan)品。
本文(wen)采用单节(jie)锂(li)电(dian)池(chi)保(bao)护(hu)(hu)芯片(pian)设(she)计实现(xian)了多节(jie)锂(li)电(dian)池(chi)串联的(de)电(dian)池(chi)组保(bao)护(hu)(hu)板(ban)，除可完成必要(yao)的(de)过电(dian)压、欠电(dian)压、过电(dian)流和短路(lu)保(bao)护(hu)(hu)功能外(wai)，还(hai)可以(yi)实现(xian)均衡充(chong)电(dian)功能。仿真和实验(yan)结果验(yan)证了该方案的(de)可行性，市场使用情(qing)况检验(yan)了该设(she)计的(de)稳定(ding)性。
联(lian)系(xi)方式：邹先(xian)生
联系电话：0755-83888366-8022
手机：18123972950
QQ：2880195519
联系地址：深圳市(shi)福田区车公庙天(tian)(tian)安数(shu)码城天(tian)(tian)吉大(da)厦CD座(zuo)5C1
请搜微信(xin)公众(zhong)号(hao)(hao):“KIA半导(dao)体”或扫一扫下图“关注”官方微信(xin)公众(zhong)号(hao)(hao)
请“关注”官(guan)方微信(xin)公众号(hao):提(ti)供 MOS管 技术帮(bang)助(zhu)
