【摘要】：針對儲能式應(yīng)急電源系統(tǒng)采用磷酸鐵鋰電池后出現(xiàn)的故障現(xiàn)象,搭建充放電測試平臺,基于采樣電路原理,分析了電池內(nèi)阻和極耳連接片上接觸電阻對電池電壓采集產(chǎn)生影響的原因,從電池PACK工藝和電池管理系統(tǒng)保護閾值設(shè)置等方面提出了具體的解決方案。在此基礎(chǔ)上,研究了多臺電源在充電和放電條件下并聯(lián)使用時,開路電壓對其工作狀態(tài)和工作電流的自我調(diào)節(jié)過程。測試結(jié)果表明:根據(jù)電芯實際性能,合理設(shè)置電池管理系統(tǒng)參數(shù),減小電池連接處接觸電阻,電源系統(tǒng)便能穩(wěn)定可靠運行。
[Abstract]:In view of the fault phenomenon of lithium iron phosphate battery used in the energy storage emergency power supply system, a charging and discharging test platform is built, based on the sampling circuit principle. This paper analyzes the reasons why the battery internal resistance and the contact resistance on the electrode connector affect the battery voltage collection, and puts forward some concrete solutions from the battery PACK process and the protection threshold setting of the battery management system. On this basis, the self regulation process of open circuit voltage to its working state and working current is studied when several power sources are used in parallel under the condition of charging and discharging. The test results show that the power supply system can run stably and reliably according to the actual performance of the battery core, setting the parameters of the battery management system reasonably and reducing the contact resistance at the connection of the battery.
【作者單位】： 廣西電網(wǎng)公司電力科學(xué)研究院;北京安通尼電子技術(shù)有限公司;
【分類號】：TM912

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