車用動力電池熱安全研究取得階段性進展
2019/3/4 10:12:58??????點擊：
動(dong)力(li)電(dian)池熱安(an)全問(wen)題是影響電(dian)動(dong)汽(qi)車(che)行駛安(an)全的(de)關鍵。在國家重點研發計劃“新能源汽(qi)車(che)”專項2016年度立項項目“高(gao)比能量動(dong)力(li)鋰離(li)(li)子(zi)電(dian)池開(kai)發與產業(ye)化技術攻(gong)關”的(de)實施(shi)中，研發團(tuan)隊針對高(gao)比能量鋰離(li)(li)子(zi)動(dong)力(li)電(dian)池熱安(an)全機(ji)理和安(an)全設計開(kai)展了(le)深入研究，目前取得了(le)階段性進(jin)展。
項目(mu)團(tuan)隊圍(wei)繞鋰(li)(li)離子電(dian)(dian)(dian)(dian)(dian)池(chi)在充放電(dian)(dian)(dian)(dian)(dian)過(guo)(guo)程(cheng)(cheng)中的(de)(de)(de)(de)產熱(re)過(guo)(guo)程(cheng)(cheng)、各(ge)成(cheng)分(fen)的(de)(de)(de)(de)熱(re)穩(wen)(wen)定(ding)(ding)性，以(yi)(yi)1Ah鋰(li)(li)離子電(dian)(dian)(dian)(dian)(dian)池(chi)單體(ti)為(wei)研(yan)(yan)究對(dui)象，通過(guo)(guo)實驗獲得表觀導熱(re)系(xi)數(shu)(shu)、各(ge)向異性導熱(re)系(xi)數(shu)(shu)、恒壓(ya)比(bi)熱(re)容(rong)、溫(wen)度系(xi)數(shu)(shu)及室溫(wen)內(nei)阻，從而計(ji)算出生熱(re)速(su)率。定(ding)(ding)性分(fen)析了電(dian)(dian)(dian)(dian)(dian)池(chi)在100%電(dian)(dian)(dian)(dian)(dian)量(liang)(liang)(liang)和(he)0%電(dian)(dian)(dian)(dian)(dian)量(liang)(liang)(liang)兩(liang)個狀態(tai)下正負極(ji)材料(liao)的(de)(de)(de)(de)熱(re)穩(wen)(wen)定(ding)(ding)性以(yi)(yi)及電(dian)(dian)(dian)(dian)(dian)解液對(dui)其(qi)熱(re)穩(wen)(wen)定(ding)(ding)性的(de)(de)(de)(de)影響。在電(dian)(dian)(dian)(dian)(dian)池(chi)的(de)(de)(de)(de)熱(re)失控部分(fen)采用加速(su)量(liang)(liang)(liang)熱(re)方法對(dui)100%電(dian)(dian)(dian)(dian)(dian)量(liang)(liang)(liang)的(de)(de)(de)(de)軟(ruan)包鋰(li)(li)離子電(dian)(dian)(dian)(dian)(dian)池(chi)進(jin)行熱(re)失控實驗，確定(ding)(ding)了電(dian)(dian)(dian)(dian)(dian)池(chi)的(de)(de)(de)(de)熱(re)失控起(qi)始溫(wen)度、最高溫(wen)度以(yi)(yi)及自(zi)升溫(wen)速(su)率。相(xiang)關研(yan)(yan)究成(cheng)果和(he)試驗結(jie)果為(wei)動力電(dian)(dian)(dian)(dian)(dian)池(chi)的(de)(de)(de)(de)熱(re)安(an)全(quan)結(jie)構設計(ji)提(ti)供了理論和(he)數(shu)(shu)據基礎(chu)。
該項(xiang)目(mu)(mu)(mu)團(tuan)隊圍繞熱(re)固(gu)性(xing)聚(ju)(ju)合物(wu)材料(liao)(liao)(liao)和(he)正(zheng)(zheng)溫(wen)度系(xi)數(shu)熱(re)敏(min)材料(liao)(liao)(liao)（PTC材料(liao)(liao)(liao)）在(zai)電(dian)(dian)(dian)池(chi)單體(ti)中的(de)(de)應(ying)(ying)用(yong)工藝(yi)與技(ji)(ji)術(shu)，結(jie)合理(li)化分析測試(shi)、電(dian)(dian)(dian)化學(xue)測試(shi)、電(dian)(dian)(dian)性(xing)能測試(shi)和(he)電(dian)(dian)(dian)池(chi)安全性(xing)能測試(shi)等手段，研(yan)(yan)究了(le)熱(re)固(gu)性(xing)聚(ju)(ju)合物(wu)材料(liao)(liao)(liao)在(zai)電(dian)(dian)(dian)池(chi)中的(de)(de)應(ying)(ying)用(yong)工藝(yi)，達到(dao)了(le)優(you)化應(ying)(ying)用(yong)工藝(yi)流程的(de)(de)目(mu)(mu)(mu)的(de)(de)；研(yan)(yan)究了(le)正(zheng)(zheng)溫(wen)度系(xi)數(shu)熱(re)敏(min)材料(liao)(liao)(liao)（PTC材料(liao)(liao)(liao)）的(de)(de)修飾(shi)(shi)液(ye)濃(nong)度、修飾(shi)(shi)方式(shi)和(he)涂(tu)層厚度對電(dian)(dian)(dian)池(chi)電(dian)(dian)(dian)性(xing)能和(he)安全性(xing)能的(de)(de)影響，進而優(you)化PTC材料(liao)(liao)(liao)的(de)(de)應(ying)(ying)用(yong)工藝(yi)和(he)技(ji)(ji)術(shu)。目(mu)(mu)(mu)前，項(xiang)目(mu)(mu)(mu)研(yan)(yan)究成果為熱(re)固(gu)性(xing)聚(ju)(ju)合物(wu)材料(liao)(liao)(liao)和(he)PTC材料(liao)(liao)(liao)在(zai)電(dian)(dian)(dian)池(chi)單體(ti)中的(de)(de)應(ying)(ying)用(yong)提供(gong)了(le)工藝(yi)和(he)技(ji)(ji)術(shu)指導，解決了(le)熱(re)固(gu)性(xing)聚(ju)(ju)合物(wu)材料(liao)(liao)(liao)和(he)PTC材料(liao)(liao)(liao)在(zai)電(dian)(dian)(dian)池(chi)單體(ti)中應(ying)(ying)用(yong)的(de)(de)基(ji)礎技(ji)(ji)術(shu)和(he)關鍵技(ji)(ji)術(shu)，為解決電(dian)(dian)(dian)池(chi)單體(ti)的(de)(de)熱(re)失控問(wen)題奠定了(le)良好的(de)(de)基(ji)礎。
項目(mu)團(tuan)隊圍(wei)繞鋰(li)(li)離子電(dian)(dian)(dian)(dian)(dian)池(chi)在充放電(dian)(dian)(dian)(dian)(dian)過(guo)(guo)程(cheng)(cheng)中的(de)(de)(de)(de)產熱(re)過(guo)(guo)程(cheng)(cheng)、各(ge)成(cheng)分(fen)的(de)(de)(de)(de)熱(re)穩(wen)(wen)定(ding)(ding)性，以(yi)(yi)1Ah鋰(li)(li)離子電(dian)(dian)(dian)(dian)(dian)池(chi)單體(ti)為(wei)研(yan)(yan)究對(dui)象，通過(guo)(guo)實驗獲得表觀導熱(re)系(xi)數(shu)(shu)、各(ge)向異性導熱(re)系(xi)數(shu)(shu)、恒壓(ya)比(bi)熱(re)容(rong)、溫(wen)度系(xi)數(shu)(shu)及室溫(wen)內(nei)阻，從而計(ji)算出生熱(re)速(su)率。定(ding)(ding)性分(fen)析了電(dian)(dian)(dian)(dian)(dian)池(chi)在100%電(dian)(dian)(dian)(dian)(dian)量(liang)(liang)(liang)和(he)0%電(dian)(dian)(dian)(dian)(dian)量(liang)(liang)(liang)兩(liang)個狀態(tai)下正負極(ji)材料(liao)的(de)(de)(de)(de)熱(re)穩(wen)(wen)定(ding)(ding)性以(yi)(yi)及電(dian)(dian)(dian)(dian)(dian)解液對(dui)其(qi)熱(re)穩(wen)(wen)定(ding)(ding)性的(de)(de)(de)(de)影響。在電(dian)(dian)(dian)(dian)(dian)池(chi)的(de)(de)(de)(de)熱(re)失控部分(fen)采用加速(su)量(liang)(liang)(liang)熱(re)方法對(dui)100%電(dian)(dian)(dian)(dian)(dian)量(liang)(liang)(liang)的(de)(de)(de)(de)軟(ruan)包鋰(li)(li)離子電(dian)(dian)(dian)(dian)(dian)池(chi)進(jin)行熱(re)失控實驗，確定(ding)(ding)了電(dian)(dian)(dian)(dian)(dian)池(chi)的(de)(de)(de)(de)熱(re)失控起(qi)始溫(wen)度、最高溫(wen)度以(yi)(yi)及自(zi)升溫(wen)速(su)率。相(xiang)關研(yan)(yan)究成(cheng)果和(he)試驗結(jie)果為(wei)動力電(dian)(dian)(dian)(dian)(dian)池(chi)的(de)(de)(de)(de)熱(re)安(an)全(quan)結(jie)構設計(ji)提(ti)供了理論和(he)數(shu)(shu)據基礎(chu)。
該項(xiang)目(mu)(mu)(mu)團(tuan)隊圍繞熱(re)固(gu)性(xing)聚(ju)(ju)合物(wu)材料(liao)(liao)(liao)和(he)正(zheng)(zheng)溫(wen)度系(xi)數(shu)熱(re)敏(min)材料(liao)(liao)(liao)（PTC材料(liao)(liao)(liao)）在(zai)電(dian)(dian)(dian)池(chi)單體(ti)中的(de)(de)應(ying)(ying)用(yong)工藝(yi)與技(ji)(ji)術(shu)，結(jie)合理(li)化分析測試(shi)、電(dian)(dian)(dian)化學(xue)測試(shi)、電(dian)(dian)(dian)性(xing)能測試(shi)和(he)電(dian)(dian)(dian)池(chi)安全性(xing)能測試(shi)等手段，研(yan)(yan)究了(le)熱(re)固(gu)性(xing)聚(ju)(ju)合物(wu)材料(liao)(liao)(liao)在(zai)電(dian)(dian)(dian)池(chi)中的(de)(de)應(ying)(ying)用(yong)工藝(yi)，達到(dao)了(le)優(you)化應(ying)(ying)用(yong)工藝(yi)流程的(de)(de)目(mu)(mu)(mu)的(de)(de)；研(yan)(yan)究了(le)正(zheng)(zheng)溫(wen)度系(xi)數(shu)熱(re)敏(min)材料(liao)(liao)(liao)（PTC材料(liao)(liao)(liao)）的(de)(de)修飾(shi)(shi)液(ye)濃(nong)度、修飾(shi)(shi)方式(shi)和(he)涂(tu)層厚度對電(dian)(dian)(dian)池(chi)電(dian)(dian)(dian)性(xing)能和(he)安全性(xing)能的(de)(de)影響，進而優(you)化PTC材料(liao)(liao)(liao)的(de)(de)應(ying)(ying)用(yong)工藝(yi)和(he)技(ji)(ji)術(shu)。目(mu)(mu)(mu)前，項(xiang)目(mu)(mu)(mu)研(yan)(yan)究成果為熱(re)固(gu)性(xing)聚(ju)(ju)合物(wu)材料(liao)(liao)(liao)和(he)PTC材料(liao)(liao)(liao)在(zai)電(dian)(dian)(dian)池(chi)單體(ti)中的(de)(de)應(ying)(ying)用(yong)提供(gong)了(le)工藝(yi)和(he)技(ji)(ji)術(shu)指導，解決了(le)熱(re)固(gu)性(xing)聚(ju)(ju)合物(wu)材料(liao)(liao)(liao)和(he)PTC材料(liao)(liao)(liao)在(zai)電(dian)(dian)(dian)池(chi)單體(ti)中應(ying)(ying)用(yong)的(de)(de)基(ji)礎技(ji)(ji)術(shu)和(he)關鍵技(ji)(ji)術(shu)，為解決電(dian)(dian)(dian)池(chi)單體(ti)的(de)(de)熱(re)失控問(wen)題奠定了(le)良好的(de)(de)基(ji)礎。
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