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新能源二手車的電(dian)池管(guan)理系統（BMS）起著至關重(zhong)要(yao)的作用(yong)。BMS主(zhu)要(yao)負責(ze)監控(kong)和管(guan)理電(dian)池儲能單(dan)元，確保電(dian)池在充放(fang)電(dian)過程中(zhong)的安全使用(yong)，其具體功能主(zhu)要(yao)包括：

1. **電池狀態(tai)監測(ce)**：BMS能夠實時監測(ce)電池的電壓(ya)、電流、溫(wen)度等關鍵(jian)參數，為(wei)電池的安全運行提供基(ji)礎數據(ju)支持(chi)。

2. **電(dian)(dian)(dian)(dian)池(chi)狀(zhuang)態(tai)分析**：包括(kuo)電(dian)(dian)(dian)(dian)池(chi)的剩余電(dian)(dian)(dian)(dian)量評(ping)估(gu)（SOC）及電(dian)(dian)(dian)(dian)池(chi)的劣化程度評(ping)估(gu)（SOH）兩部(bu)分。SOC用來提示動力(li)電(dian)(dian)(dian)(dian)池(chi)組剩余電(dian)(dian)(dian)(dian)量，是計算和估(gu)計電(dian)(dian)(dian)(dian)動汽車(che)續駛里(li)程的基礎；而SOH用來提示電(dian)(dian)(dian)(dian)池(chi)技術狀(zhuang)態(tai)、預計可用壽命等(deng)健康(kang)狀(zhuang)態(tai)的參數。

3. **電池(chi)安(an)全保(bao)護**：BMS具有過流保(bao)護、過充(chong)過放保(bao)護、過溫(wen)保(bao)護等功能，能夠在(zai)電池(chi)出現異常時迅速(su)切(qie)斷電路，防止(zhi)電池(chi)損壞甚至引(yin)發安(an)全事(shi)故。

4. **能量控制管理**：BMS能夠優(you)化電(dian)池的充電(dian)和放(fang)電(dian)過(guo)程，減少對電(dian)池組的損(sun)害，延長電(dian)池的使用(yong)壽命。

綜(zong)上(shang)所述，新能源二手車的電(dian)(dian)池(chi)(chi)管(guan)理系統(tong)在確保電(dian)(dian)池(chi)(chi)安(an)全、提高(gao)電(dian)(dian)池(chi)(chi)利用效率、延長電(dian)(dian)池(chi)(chi)使用壽命等方面發揮著重(zhong)要作用。