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：
動力(li)(li)電(dian)池(chi)熱安(an)全問題是影響電(dian)動汽車行駛安(an)全的關(guan)鍵。在國家重點研發計劃“新能(neng)源汽車”專(zhuan)項2016年度立項項目“高比(bi)能(neng)量(liang)動力(li)(li)鋰(li)離子電(dian)池(chi)開(kai)發與(yu)產業化技術攻(gong)關(guan)”的實施中，研發團(tuan)隊針對(dui)高比(bi)能(neng)量(liang)鋰(li)離子動力(li)(li)電(dian)池(chi)熱安(an)全機理和(he)安(an)全設計開(kai)展(zhan)了深(shen)入研究，目前取(qu)得了階段性進展(zhan)。
項目團隊圍繞鋰離(li)子(zi)電(dian)(dian)(dian)池(chi)在充放電(dian)(dian)(dian)過(guo)程中的(de)(de)產(chan)熱(re)(re)過(guo)程、各成(cheng)分(fen)的(de)(de)熱(re)(re)穩(wen)(wen)定(ding)(ding)性(xing)，以(yi)1Ah鋰離(li)子(zi)電(dian)(dian)(dian)池(chi)單體為(wei)研究(jiu)對(dui)象(xiang)，通過(guo)實(shi)驗獲得(de)表觀導(dao)熱(re)(re)系數、各向(xiang)異性(xing)導(dao)熱(re)(re)系數、恒(heng)壓比熱(re)(re)容、溫(wen)度(du)(du)(du)系數及(ji)室溫(wen)內阻，從而計算出生熱(re)(re)速(su)率(lv)。定(ding)(ding)性(xing)分(fen)析了(le)電(dian)(dian)(dian)池(chi)在100%電(dian)(dian)(dian)量(liang)(liang)和(he)0%電(dian)(dian)(dian)量(liang)(liang)兩個(ge)狀態下(xia)正(zheng)負(fu)極材料的(de)(de)熱(re)(re)穩(wen)(wen)定(ding)(ding)性(xing)以(yi)及(ji)電(dian)(dian)(dian)解液對(dui)其熱(re)(re)穩(wen)(wen)定(ding)(ding)性(xing)的(de)(de)影(ying)響(xiang)。在電(dian)(dian)(dian)池(chi)的(de)(de)熱(re)(re)失控(kong)(kong)部分(fen)采用加速(su)量(liang)(liang)熱(re)(re)方(fang)法對(dui)100%電(dian)(dian)(dian)量(liang)(liang)的(de)(de)軟包鋰離(li)子(zi)電(dian)(dian)(dian)池(chi)進行熱(re)(re)失控(kong)(kong)實(shi)驗，確定(ding)(ding)了(le)電(dian)(dian)(dian)池(chi)的(de)(de)熱(re)(re)失控(kong)(kong)起始溫(wen)度(du)(du)(du)、最(zui)高溫(wen)度(du)(du)(du)以(yi)及(ji)自升溫(wen)速(su)率(lv)。相關研究(jiu)成(cheng)果和(he)試驗結果為(wei)動力電(dian)(dian)(dian)池(chi)的(de)(de)熱(re)(re)安(an)全結構設(she)計提供了(le)理論和(he)數據(ju)基礎。
該項(xiang)(xiang)目(mu)(mu)(mu)團隊圍繞熱(re)(re)(re)固性聚合(he)物材(cai)(cai)(cai)料(liao)(liao)和(he)(he)(he)正(zheng)溫(wen)度(du)系(xi)數熱(re)(re)(re)敏材(cai)(cai)(cai)料(liao)(liao)（PTC材(cai)(cai)(cai)料(liao)(liao)）在(zai)電(dian)(dian)池(chi)(chi)(chi)單(dan)(dan)(dan)體(ti)中(zhong)的(de)應(ying)用(yong)工(gong)(gong)藝(yi)(yi)與技術，結合(he)理化(hua)分析測(ce)試(shi)(shi)、電(dian)(dian)化(hua)學(xue)測(ce)試(shi)(shi)、電(dian)(dian)性能(neng)測(ce)試(shi)(shi)和(he)(he)(he)電(dian)(dian)池(chi)(chi)(chi)安(an)全性能(neng)測(ce)試(shi)(shi)等手段，研(yan)(yan)究了(le)(le)熱(re)(re)(re)固性聚合(he)物材(cai)(cai)(cai)料(liao)(liao)在(zai)電(dian)(dian)池(chi)(chi)(chi)中(zhong)的(de)應(ying)用(yong)工(gong)(gong)藝(yi)(yi)，達(da)到了(le)(le)優化(hua)應(ying)用(yong)工(gong)(gong)藝(yi)(yi)流(liu)程的(de)目(mu)(mu)(mu)的(de)；研(yan)(yan)究了(le)(le)正(zheng)溫(wen)度(du)系(xi)數熱(re)(re)(re)敏材(cai)(cai)(cai)料(liao)(liao)（PTC材(cai)(cai)(cai)料(liao)(liao)）的(de)修(xiu)飾液濃度(du)、修(xiu)飾方式和(he)(he)(he)涂層厚度(du)對電(dian)(dian)池(chi)(chi)(chi)電(dian)(dian)性能(neng)和(he)(he)(he)安(an)全性能(neng)的(de)影響，進而優化(hua)PTC材(cai)(cai)(cai)料(liao)(liao)的(de)應(ying)用(yong)工(gong)(gong)藝(yi)(yi)和(he)(he)(he)技術。目(mu)(mu)(mu)前，項(xiang)(xiang)目(mu)(mu)(mu)研(yan)(yan)究成果為熱(re)(re)(re)固性聚合(he)物材(cai)(cai)(cai)料(liao)(liao)和(he)(he)(he)PTC材(cai)(cai)(cai)料(liao)(liao)在(zai)電(dian)(dian)池(chi)(chi)(chi)單(dan)(dan)(dan)體(ti)中(zhong)的(de)應(ying)用(yong)提供了(le)(le)工(gong)(gong)藝(yi)(yi)和(he)(he)(he)技術指導，解決了(le)(le)熱(re)(re)(re)固性聚合(he)物材(cai)(cai)(cai)料(liao)(liao)和(he)(he)(he)PTC材(cai)(cai)(cai)料(liao)(liao)在(zai)電(dian)(dian)池(chi)(chi)(chi)單(dan)(dan)(dan)體(ti)中(zhong)應(ying)用(yong)的(de)基(ji)礎技術和(he)(he)(he)關鍵技術，為解決電(dian)(dian)池(chi)(chi)(chi)單(dan)(dan)(dan)體(ti)的(de)熱(re)(re)(re)失(shi)控問題奠定了(le)(le)良好的(de)基(ji)礎。
項目團隊圍繞鋰離(li)子(zi)電(dian)(dian)(dian)池(chi)在充放電(dian)(dian)(dian)過(guo)程中的(de)(de)產(chan)熱(re)(re)過(guo)程、各成(cheng)分(fen)的(de)(de)熱(re)(re)穩(wen)(wen)定(ding)(ding)性(xing)，以(yi)1Ah鋰離(li)子(zi)電(dian)(dian)(dian)池(chi)單體為(wei)研究(jiu)對(dui)象(xiang)，通過(guo)實(shi)驗獲得(de)表觀導(dao)熱(re)(re)系數、各向(xiang)異性(xing)導(dao)熱(re)(re)系數、恒(heng)壓比熱(re)(re)容、溫(wen)度(du)(du)(du)系數及(ji)室溫(wen)內阻，從而計算出生熱(re)(re)速(su)率(lv)。定(ding)(ding)性(xing)分(fen)析了(le)電(dian)(dian)(dian)池(chi)在100%電(dian)(dian)(dian)量(liang)(liang)和(he)0%電(dian)(dian)(dian)量(liang)(liang)兩個(ge)狀態下(xia)正(zheng)負(fu)極材料的(de)(de)熱(re)(re)穩(wen)(wen)定(ding)(ding)性(xing)以(yi)及(ji)電(dian)(dian)(dian)解液對(dui)其熱(re)(re)穩(wen)(wen)定(ding)(ding)性(xing)的(de)(de)影(ying)響(xiang)。在電(dian)(dian)(dian)池(chi)的(de)(de)熱(re)(re)失控(kong)(kong)部分(fen)采用加速(su)量(liang)(liang)熱(re)(re)方(fang)法對(dui)100%電(dian)(dian)(dian)量(liang)(liang)的(de)(de)軟包鋰離(li)子(zi)電(dian)(dian)(dian)池(chi)進行熱(re)(re)失控(kong)(kong)實(shi)驗，確定(ding)(ding)了(le)電(dian)(dian)(dian)池(chi)的(de)(de)熱(re)(re)失控(kong)(kong)起始溫(wen)度(du)(du)(du)、最(zui)高溫(wen)度(du)(du)(du)以(yi)及(ji)自升溫(wen)速(su)率(lv)。相關研究(jiu)成(cheng)果和(he)試驗結果為(wei)動力電(dian)(dian)(dian)池(chi)的(de)(de)熱(re)(re)安(an)全結構設(she)計提供了(le)理論和(he)數據(ju)基礎。
該項(xiang)(xiang)目(mu)(mu)(mu)團隊圍繞熱(re)(re)(re)固性聚合(he)物材(cai)(cai)(cai)料(liao)(liao)和(he)(he)(he)正(zheng)溫(wen)度(du)系(xi)數熱(re)(re)(re)敏材(cai)(cai)(cai)料(liao)(liao)（PTC材(cai)(cai)(cai)料(liao)(liao)）在(zai)電(dian)(dian)池(chi)(chi)(chi)單(dan)(dan)(dan)體(ti)中(zhong)的(de)應(ying)用(yong)工(gong)(gong)藝(yi)(yi)與技術，結合(he)理化(hua)分析測(ce)試(shi)(shi)、電(dian)(dian)化(hua)學(xue)測(ce)試(shi)(shi)、電(dian)(dian)性能(neng)測(ce)試(shi)(shi)和(he)(he)(he)電(dian)(dian)池(chi)(chi)(chi)安(an)全性能(neng)測(ce)試(shi)(shi)等手段，研(yan)(yan)究了(le)(le)熱(re)(re)(re)固性聚合(he)物材(cai)(cai)(cai)料(liao)(liao)在(zai)電(dian)(dian)池(chi)(chi)(chi)中(zhong)的(de)應(ying)用(yong)工(gong)(gong)藝(yi)(yi)，達(da)到了(le)(le)優化(hua)應(ying)用(yong)工(gong)(gong)藝(yi)(yi)流(liu)程的(de)目(mu)(mu)(mu)的(de)；研(yan)(yan)究了(le)(le)正(zheng)溫(wen)度(du)系(xi)數熱(re)(re)(re)敏材(cai)(cai)(cai)料(liao)(liao)（PTC材(cai)(cai)(cai)料(liao)(liao)）的(de)修(xiu)飾液濃度(du)、修(xiu)飾方式和(he)(he)(he)涂層厚度(du)對電(dian)(dian)池(chi)(chi)(chi)電(dian)(dian)性能(neng)和(he)(he)(he)安(an)全性能(neng)的(de)影響，進而優化(hua)PTC材(cai)(cai)(cai)料(liao)(liao)的(de)應(ying)用(yong)工(gong)(gong)藝(yi)(yi)和(he)(he)(he)技術。目(mu)(mu)(mu)前，項(xiang)(xiang)目(mu)(mu)(mu)研(yan)(yan)究成果為熱(re)(re)(re)固性聚合(he)物材(cai)(cai)(cai)料(liao)(liao)和(he)(he)(he)PTC材(cai)(cai)(cai)料(liao)(liao)在(zai)電(dian)(dian)池(chi)(chi)(chi)單(dan)(dan)(dan)體(ti)中(zhong)的(de)應(ying)用(yong)提供了(le)(le)工(gong)(gong)藝(yi)(yi)和(he)(he)(he)技術指導，解決了(le)(le)熱(re)(re)(re)固性聚合(he)物材(cai)(cai)(cai)料(liao)(liao)和(he)(he)(he)PTC材(cai)(cai)(cai)料(liao)(liao)在(zai)電(dian)(dian)池(chi)(chi)(chi)單(dan)(dan)(dan)體(ti)中(zhong)應(ying)用(yong)的(de)基(ji)礎技術和(he)(he)(he)關鍵技術，為解決電(dian)(dian)池(chi)(chi)(chi)單(dan)(dan)(dan)體(ti)的(de)熱(re)(re)(re)失(shi)控問題奠定了(le)(le)良好的(de)基(ji)礎。
- 上一篇：汽車電瓶出現什么現象，表示電量過低，該充電啦 2019/3/4
- 下一篇：電池快充(快換)是市場對電動汽車的必然要求 2019/3/1