隨著新能(neng)(neng)源(yuan)汽車的(de)興起(qi)，鋰電(dian)(dian)池成為了新的(de)熱門(men)話題(ti)。 鋰電(dian)(dian)池的(de)性能(neng)(neng)和(he)穩(wen)定性都取(qu)得了很大的(de)進步，成為了替代傳(chuan)統燃油汽車的(de)重要(yao)(yao)動力源(yuan)。在鋰電(dian)(dian)池中，電(dian)(dian)極是(shi)一個(ge)(ge)關鍵的(de)部件，其質量(liang)和(he)穩(wen)定性直(zhi)接(jie)關系到整個(ge)(ge)電(dian)(dian)池的(de)性能(neng)(neng)，因(yin)此(ci)，電(dian)(dian)極的(de)制造和(he)連接(jie)技術變得至關重要(yao)(yao)。

鋰電池電極激光焊接

       在鋰電(dian)(dian)(dian)(dian)池(chi)中(zhong)(zhong)，電(dian)(dian)(dian)(dian)極(ji)主(zhu)要由正極(ji)、負極(ji)和隔膜三部分組(zu)(zu)成(cheng)，其中(zhong)(zhong)正極(ji)和負極(ji)主(zhu)要由導(dao)(dao)電(dian)(dian)(dian)(dian)材料、粘結劑以及涂(tu)敷劑組(zu)(zu)成(cheng)。 然而，由于鋰離子電(dian)(dian)(dian)(dian)池(chi)的(de)高能量密度(du)和高運(yun)行溫度(du)，電(dian)(dian)(dian)(dian)極(ji)和電(dian)(dian)(dian)(dian)池(chi)充電(dian)(dian)(dian)(dian)和放電(dian)(dian)(dian)(dian)過(guo)(guo)程(cheng)中(zhong)(zhong)會受(shou)到很大的(de)熱和機(ji)械應力，從(cong)而導(dao)(dao)致電(dian)(dian)(dian)(dian)極(ji)部件的(de)機(ji)械松動和物理變(bian)形，這(zhe)會影響電(dian)(dian)(dian)(dian)池(chi)的(de)整(zheng)體性(xing)能。 因(yin)此，在制造鋰電(dian)(dian)(dian)(dian)池(chi)電(dian)(dian)(dian)(dian)極(ji)時，確保電(dian)(dian)(dian)(dian)極(ji)粘附(fu)牢固和內部結構的(de)穩(wen)定性(xing)至關(guan)重要。這(zhe)種要求通過(guo)(guo)正確的(de)焊接方(fang)法實現。

       在(zai)實際電(dian)(dian)(dian)(dian)(dian)極制造(zao)中(zhong)，通(tong)常(chang)使(shi)用(yong)(yong)紫外線或熱處理方法(fa)來固(gu)(gu)化涂敷(fu)劑，并使(shi)導(dao)電(dian)(dian)(dian)(dian)(dian)材(cai)料和粘結劑固(gu)(gu)定在(zai)雙(shuang)極片(pian)(pian)上(shang)。然而，這種(zhong)方法(fa)在(zai)電(dian)(dian)(dian)(dian)(dian)極的連接(jie)時會(hui)受到很大的限制。 因此，焊接(jie)是制造(zao)鋰電(dian)(dian)(dian)(dian)(dian)池(chi)電(dian)(dian)(dian)(dian)(dian)極的常(chang)用(yong)(yong)方法(fa)。 焊接(jie)產生(sheng)的熱和機械沖擊不僅固(gu)(gu)定電(dian)(dian)(dian)(dian)(dian)極的結構和減少了機械變形，而且增加(jia)了電(dian)(dian)(dian)(dian)(dian)池(chi)片(pian)(pian)之間(jian)的熱和電(dian)(dian)(dian)(dian)(dian)流接(jie)觸(chu)，從而減少了電(dian)(dian)(dian)(dian)(dian)池(chi)內部(bu)的電(dian)(dian)(dian)(dian)(dian)阻和電(dian)(dian)(dian)(dian)(dian)池(chi)片(pian)(pian)之間(jian)的電(dian)(dian)(dian)(dian)(dian)化學失衡。

       目(mu)前(qian)，最常用的焊接方(fang)法(fa)是激(ji)光(guang)(guang)焊接。在(zai)(zai)激(ji)光(guang)(guang)焊接過程中，激(ji)光(guang)(guang)束被聚焦在(zai)(zai)電(dian)(dian)(dian)(dian)極(ji)片(pian)上，并通過瞬間加(jia)熱(re)(re)，使(shi)電(dian)(dian)(dian)(dian)極(ji)片(pian)的物質熔(rong)化，形成結(jie)合。 由于激(ji)光(guang)(guang)束的高能量密(mi)度和(he)(he)強烈的局(ju)部(bu)加(jia)熱(re)(re)作用，可(ke)以在(zai)(zai)納秒至微秒的時間內(nei)焊接電(dian)(dian)(dian)(dian)極(ji)片(pian)，沒(mei)有明顯的熱(re)(re)影響區和(he)(he)變形。 同時，激(ji)光(guang)(guang)焊接還可(ke)以自(zi)動化和(he)(he)高控制度的優勢，可(ke)以輕(qing)松應對電(dian)(dian)(dian)(dian)量大和(he)(he)同構命令嚴格的電(dian)(dian)(dian)(dian)極(ji)生產(chan)。

       激(ji)光焊接可以(yi)提高(gao)電(dian)(dian)(dian)極(ji)的(de)(de)粘附力和結(jie)構的(de)(de)穩定性(xing)，從而(er)提高(gao)電(dian)(dian)(dian)池(chi)的(de)(de)性(xing)能(neng)和壽命。 此外，它們(men)也為鋰電(dian)(dian)(dian)池(chi)制造行業帶來了更高(gao)的(de)(de)自動化(hua)和精確度，這對于電(dian)(dian)(dian)極(ji)的(de)(de)生產和組裝(zhuang)是非常重(zhong)要的(de)(de)。

        智能(neng)化、自(zi)動化、數字化、信息化是未來制造(zao)業(ye)的(de)發展(zhan)大趨勢，雙翌光電致力于(yu)制造(zao)業(ye)工廠(chang)智能(neng)改造(zao)，數字化升級。我(wo)們(men)堅信通過(guo)不斷努(nu)力與創新，能(neng)夠實現與客戶(hu)的(de)合作共贏(ying)。如果您有相關視覺檢測方面的(de)需求，請聯系我(wo)們(men)。