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前言鋰離子(zi)(zi)電(dian)(dian)(dian)(dian)池(chi)(chi)熱失控(kong)主要(yao)是由各類(lei)誘發因素(su)所導(dao)致的(de)(de)鏈(lian)式反(fan)應現(xian)象。目前，行業(ye)內(nei)普遍認(ren)為鋰離子(zi)(zi)電(dian)(dian)(dian)(dian)池(chi)(chi)熱失控(kong)發生(sheng)后其內(nei)部機(ji)理(li)遵循“鋰離子(zi)(zi)電(dian)(dian)(dian)(dian)池(chi)(chi)熱失控(kong)時序(xu)圖”，如下(xia)圖1所示，在多種鏈(lian)式放熱反(fan)應中，電(dian)(dian)(dian)(dian)池(chi)(chi)正(zheng)負極之間劇烈(lie)(lie)的(de)(de)氧化(hua)還原反(fan)應是熱失控(kong)過(guo)程的(de)(de)主反(fan)應。圖1絕熱熱失控(kong)測試各個(ge)(ge)階段發生(sheng)的(de)(de)化(hua)學反(fan)應情況而(er)電(dian)(dian)(dian)(dian)池(chi)(chi)的(de)(de)荷(he)電(dian)(dian)(dian)(dian)狀態(StateofCharge，SOC)作為一個(ge)(ge)關(guan)鍵參數，被認(ren)為與電(dian)(dian)(dian)(dian)池(chi)(chi)熱失控(kong)的(de)(de)等級和烈(lie)(lie)度存在著緊密的(de)(de)關(guan)聯。本文綜合行業(ye)專(zhuan)家公布的(de)(de)研究成果，多維度分析電(dian)(dian)(dian)(dian)池(chi)(chi)熱失控(kong)與電(dian)(dian)(dian)(dian)量之間的(de)(de)具體關(guan)系(xi)，為電(dian)(dian)(dian)(dian)池(chi)(chi)...

在化學實驗中(zhong)，了解(jie)物(wu)質的(de)(de)(de)熱(re)(re)性質是至關(guan)重要的(de)(de)(de)，它不(bu)僅有助于(yu)(yu)我們理解(jie)化學反應的(de)(de)(de)本(ben)質，還能為工業生產提供重要的(de)(de)(de)指導。等(deng)(deng)溫(wen)量(liang)(liang)(liang)熱(re)(re)儀作(zuo)為一種精確測量(liang)(liang)(liang)物(wu)質在恒(heng)定(ding)溫(wen)度下吸(xi)收(shou)或(huo)釋(shi)放熱(re)(re)量(liang)(liang)(liang)的(de)(de)(de)儀器，在這一領域發揮著不(bu)可替代的(de)(de)(de)作(zuo)用。等(deng)(deng)溫(wen)量(liang)(liang)(liang)熱(re)(re)儀的(de)(de)(de)工作(zuo)原理基于(yu)(yu)熱(re)(re)力(li)學第一定(ding)律(lv)，即能量(liang)(liang)(liang)守恒(heng)定(ding)律(lv)。在實驗過(guo)程中(zhong)，樣品(pin)被放置在一個絕熱(re)(re)的(de)(de)(de)容器中(zhong)，該容器能夠與外(wai)界環(huan)境保(bao)(bao)持溫(wen)度不(bu)變。通過(guo)加熱(re)(re)或(huo)冷卻系統，實驗者可以(yi)控制容器內的(de)(de)(de)溫(wen)度，使其保(bao)(bao)持在所(suo)需(xu)的(de)(de)(de)恒(heng)定(ding)值。當樣品(pin)發生化學反應或(huo)物(wu)理變化時，會(hui)吸(xi)收(shou)或(huo)釋(shi)放熱(re)(re)量(liang)(liang)(liang)，這部分(fen)熱(re)(re)量(liang)(liang)(liang)會(hui)引起容...

前(qian)言電池(chi)絕(jue)熱(re)(re)量(liang)(liang)熱(re)(re)儀作為進行電池(chi)絕(jue)熱(re)(re)熱(re)(re)失(shi)控測(ce)(ce)量(liang)(liang)的(de)重要儀器(qi)(qi)，其核(he)心技術(shu)指標(biao)為樣品(pin)(pin)自(zi)(zi)放熱(re)(re)檢測(ce)(ce)靈敏度(du)，即識(shi)別樣品(pin)(pin)微(wei)弱放熱(re)(re)的(de)能力，該指標(biao)直接決(jue)定(ding)了(le)儀器(qi)(qi)對(dui)電池(chi)自(zi)(zi)放熱(re)(re)起始溫(wen)度(du)Tonset等特征溫(wen)度(du)點的(de)測(ce)(ce)量(liang)(liang)準確性。為實(shi)(shi)現(xian)高(gao)檢測(ce)(ce)靈敏度(du)，要求儀器(qi)(qi)具有(you)理想的(de)結(jie)構設計(ji)、精準測(ce)(ce)溫(wen)技術(shu)和高(gao)效控溫(wen)算法(fa)等，從而實(shi)(shi)現(xian)優異的(de)絕(jue)熱(re)(re)性能。目(mu)前(qian)行業內(nei)缺(que)失(shi)電池(chi)絕(jue)熱(re)(re)量(liang)(liang)熱(re)(re)儀整機計(ji)量(liang)(liang)校準規范(fan)，因此未形成統一、科學、合理的(de)方法(fa)驗(yan)證儀器(qi)(qi)核(he)心指標(biao)，不(bu)利于(yu)客(ke)觀評價儀器(qi)(qi)性能和規范(fan)儀器(qi)(qi)標(biao)準，絕(jue)熱(re)(re)性能不(bu)佳的(de)儀器(qi)(qi)測(ce)(ce)定(ding)的(de)數據(ju)更將(jiang)直接影響相(xiang)關企...

電(dian)(dian)(dian)池(chi)(chi)熱特(te)性(xing)(xing)參(can)數測(ce)試(shi)具備符合GB/T36276-2023《電(dian)(dian)(dian)力(li)儲能用鋰離子電(dian)(dian)(dian)池(chi)(chi)》“絕(jue)熱溫升(sheng)特(te)性(xing)(xing)”實驗標準(zhun)的專用測(ce)試(shi)模式(shi)，是研究長(chang)邊100mm~900mm之間大型(xing)電(dian)(dian)(dian)池(chi)(chi)單(dan)體及(ji)其(qi)小型(xing)模組的絕(jue)熱量(liang)熱儀，可(ke)實現電(dian)(dian)(dian)池(chi)(chi)熱失(shi)控測(ce)試(shi)、電(dian)(dian)(dian)池(chi)(chi)產(chan)氣測(ce)試(shi)、電(dian)(dian)(dian)池(chi)(chi)充放(fang)電(dian)(dian)(dian)產(chan)熱測(ce)試(shi)、電(dian)(dian)(dian)池(chi)(chi)比(bi)熱容測(ce)試(shi)，精準(zhun)獲取鋰電(dian)(dian)(dian)池(chi)(chi)低溫狀態下的充放(fang)電(dian)(dian)(dian)產(chan)熱和比(bi)熱容、熱失(shi)控起始溫度、最大熱失(shi)控速率(lv)、絕(jue)熱溫升(sheng)特(te)性(xing)(xing)、電(dian)(dian)(dian)池(chi)(chi)產(chan)氣量(liang)和產(chan)氣速率(lv)等參(can)數。儀器可(ke)為(wei)鋰電(dian)(dian)(dian)池(chi)(chi)及(ji)電(dian)(dian)(dian)池(chi)(chi)模組安全性(xing)(xing)能評(ping)估提(ti)供(gong)數據支(zhi)持(chi)；為(wei)動力(li)電(dian)(dian)(dian)池(chi)(chi)低溫熱管理(li)系(xi)統提(ti)供(gong)評(ping)價依據。該儀器具...

在化(hua)(hua)學(xue)分析領域，閃(shan)(shan)點(dian)(dian)測(ce)(ce)試是評估(gu)揮(hui)發性(xing)液(ye)(ye)體(ti)(ti)易燃性(xing)的(de)(de)(de)重要(yao)手段。閃(shan)(shan)點(dian)(dian)是指液(ye)(ye)體(ti)(ti)在一定條件下(xia)能(neng)夠釋放足(zu)夠的(de)(de)(de)蒸氣與空氣中的(de)(de)(de)氧(yang)氣形成可燃性(xing)混合物，并在外界點(dian)(dian)火源的(de)(de)(de)作(zuo)(zuo)用下(xia)瞬間燃燒的(de)(de)(de)低溫度。準確測(ce)(ce)量液(ye)(ye)體(ti)(ti)的(de)(de)(de)閃(shan)(shan)點(dian)(dian)對于確保工業生(sheng)產、儲存和運(yun)輸過程(cheng)的(de)(de)(de)安全(quan)性(xing)至關重要(yao)。微量連續閉(bi)(bi)口(kou)閃(shan)(shan)點(dian)(dian)儀作(zuo)(zuo)為一種高精度、高效率的(de)(de)(de)檢測(ce)(ce)設備(bei)，在化(hua)(hua)學(xue)分析實(shi)驗室中發揮(hui)著重要(yao)作(zuo)(zuo)用。微量連續閉(bi)(bi)口(kou)閃(shan)(shan)點(dian)(dian)儀通常采用閉(bi)(bi)口(kou)杯法進(jin)行測(ce)(ce)量。測(ce)(ce)試時，將待測(ce)(ce)液(ye)(ye)體(ti)(ti)樣品放入一個特定的(de)(de)(de)閉(bi)(bi)口(kou)閃(shan)(shan)點(dian)(dian)測(ce)(ce)試杯中，通過加熱裝置對樣品進(jin)行加熱，同(tong)時攪(jiao)拌裝置保持樣品的(de)(de)(de)均勻(yun)性(xing)...