本文選題：鋰離子電池并聯(lián)　切入點(diǎn)：性能評(píng)估　出處：《電網(wǎng)技術(shù)》2014年06期 　論文類(lèi)型：期刊論文

【摘要】：為研究大容量鋰離子電池在并聯(lián)方式制約下的性能估計(jì)和評(píng)價(jià)方法,首先,基于不同循環(huán)條件和不同電池參數(shù)差異條件的并聯(lián)電池實(shí)驗(yàn),分析了支路電流不平衡的起因和結(jié)果;選取簡(jiǎn)化的并聯(lián)等效電路模型,詳細(xì)分析了不同充電階段的支路荷電狀態(tài)(state of charge,SOC)累積特性,提出了并聯(lián)電池電流不平衡的等效計(jì)算方法;建立了以并聯(lián)電池交叉點(diǎn)前的平均電流、放電末端的電流極值和整體容量利用率等參數(shù)為基礎(chǔ)的電池組綜合性能評(píng)價(jià)指標(biāo);闡述了并聯(lián)電池組和單體電池的等價(jià)范圍,對(duì)延長(zhǎng)并聯(lián)電池使用壽命和成組篩選等應(yīng)用提供了參考。
[Abstract]:In order to study the performance estimation and evaluation method of large capacity lithium ion battery under the restriction of parallel mode, firstly, the cause and result of branch current imbalance are analyzed based on the experiment of different cycle conditions and different battery parameters. Selecting the simplified parallel equivalent circuit model, the accumulative characteristics of state of charge SOC) in different charging stages are analyzed in detail, and the equivalent calculation method of current imbalance of parallel battery is put forward. Based on the parameters of average current, current extremum of discharge terminal and overall capacity utilization ratio, the comprehensive performance evaluation index of battery pack is established, and the equivalent range of parallel battery pack and single cell is expounded, which is based on the parameters of average current in front of parallel battery crossing point, current extremum of discharge terminal and overall capacity utilization ratio, etc. It provides a reference for prolonging the service life of parallel battery and screening in groups.
【作者單位】： 北京交通大學(xué)電氣工程學(xué)院;
【基金】：國(guó)家科技支撐計(jì)劃資助項(xiàng)目(2013BAA01B03)~~
【分類(lèi)號(hào)】：TM912

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本文編號(hào)：1585299