一、電池管理系統的工作原理是什么

電(dian)池管(guan)(guan)理系統的主要功(gong)能是(shi)實現電(dian)池單(dan)元的智能化管(guan)(guan)理及維護，在新能源汽車上應用廣泛，那么電(dian)池管(guan)(guan)理系統是(shi)怎么工作(zuo)的呢？

一般來說，電池管理系統由(you)電(dian)(dian)池終(zhong)端模塊（主(zhu)(zhu)要進行數據采集，如：電(dian)(dian)壓參(can)數、電(dian)(dian)流(liu)參(can)數、溫度、通信信號等）、中間(jian)控制模塊（主(zhu)(zhu)要與整車系(xi)統進行通訊，控制充(chong)電(dian)(dian)機等）和顯(xian)示模塊（主(zhu)(zhu)要進行數據呈現，實現人機交互）三部分組成(cheng)，采用內部CAN總線技(ji)術實現模塊之間(jian)的數據信息通訊。

電(dian)(dian)(dian)(dian)池(chi)(chi)管理系(xi)統(tong)(tong)工作時，通(tong)過(guo)電(dian)(dian)(dian)(dian)池(chi)(chi)終(zhong)端模塊檢測(ce)動(dong)力(li)電(dian)(dian)(dian)(dian)池(chi)(chi)組中各(ge)單體電(dian)(dian)(dian)(dian)池(chi)(chi)的狀(zhuang)態來確(que)定(ding)整個電(dian)(dian)(dian)(dian)池(chi)(chi)系(xi)統(tong)(tong)的狀(zhuang)態，并根(gen)據它們的狀(zhuang)態對動(dong)力(li)電(dian)(dian)(dian)(dian)池(chi)(chi)系(xi)統(tong)(tong)進行(xing)對應(ying)的控制調整和策略實施，實現(xian)對動(dong)力(li)電(dian)(dian)(dian)(dian)池(chi)(chi)系(xi)統(tong)(tong)及各(ge)單體的充放(fang)電(dian)(dian)(dian)(dian)管理以保證動(dong)力(li)電(dian)(dian)(dian)(dian)池(chi)(chi)系(xi)統(tong)(tong)安全穩定(ding)地運行(xing)。

基(ji)于各個(ge)模塊的(de)(de)功(gong)能，BMS能實時檢(jian)測動(dong)力電(dian)(dian)(dian)池(chi)的(de)(de)電(dian)(dian)(dian)壓、電(dian)(dian)(dian)流、溫度等參數，實現對動(dong)力電(dian)(dian)(dian)池(chi)進行熱管(guan)理、均衡(heng)管(guan)理、高(gao)壓及絕緣(yuan)檢(jian)測等，并且(qie)能夠(gou)計算動(dong)力電(dian)(dian)(dian)池(chi)剩余(yu)容(rong)量、充(chong)放電(dian)(dian)(dian)功(gong)率以及SOC和SOH狀態(tai)。

二、BMS電池管理系統的通訊方式是什么

電池管理系統是連接動力電池與電動汽車的唯一紐帶，實現對電動汽車車載動力電池的監控，控制動力電池的充放電過程，保證電動汽車動力電池安全高效運行，為了實現有效管理，電池管理系統中各模塊的信息傳遞非常重要，一般電池管理系統的(de)通訊(xun)方式有CAN通訊(xun)和菊(ju)花鏈通訊(xun)兩種(zhong)。

相(xiang)(xiang)比較(jiao)而(er)言，CAN通訊最(zui)為穩(wen)定(ding)，但(dan)由于需(xu)要考慮電(dian)源芯(xin)片(pian)，隔離電(dian)路(lu)等(deng)成本(ben)較(jiao)高，菊(ju)花鏈通訊實際上是(shi)SPI通訊，成本(ben)很低，穩(wen)定(ding)性(xing)方面相(xiang)(xiang)對(dui)較(jiao)差，但(dan)是(shi)隨著對(dui)成本(ben)控制壓力越(yue)(yue)來越(yue)(yue)大，很多(duo)廠家都在向菊(ju)花鏈的方式轉變(bian)，一般會采用2條甚至更多(duo)菊(ju)花鏈來增(zeng)強通訊穩(wen)定(ding)性(xing)。