TW201246657A - Method for manufacturing battery cell and battery cell manufactured using the same - Google Patents
Method for manufacturing battery cell and battery cell manufactured using the same Download PDFInfo
- Publication number
- TW201246657A TW201246657A TW100143007A TW100143007A TW201246657A TW 201246657 A TW201246657 A TW 201246657A TW 100143007 A TW100143007 A TW 100143007A TW 100143007 A TW100143007 A TW 100143007A TW 201246657 A TW201246657 A TW 201246657A
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- Prior art keywords
- battery
- battery case
- unsealed
- electrolyte
- preparation
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- 229920001897 terpolymer Polymers 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical compound FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 description 1
- 239000006234 thermal black Substances 0.000 description 1
- 238000012719 thermal polymerization Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 229910000314 transition metal oxide Inorganic materials 0.000 description 1
- BDZBKCUKTQZUTL-UHFFFAOYSA-N triethyl phosphite Chemical compound CCOP(OCC)OCC BDZBKCUKTQZUTL-UHFFFAOYSA-N 0.000 description 1
- BHZCMUVGYXEBMY-UHFFFAOYSA-N trilithium;azanide Chemical compound [Li+].[Li+].[Li+].[NH2-] BHZCMUVGYXEBMY-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Description
201246657 六、發明說明: 【發明所屬之技術領域】 本發明係關於一種電池製備方法,尤指一種適用於製 備電池之方法,該電池包含一電極组及一提供於一電池殼 體中之電解質,該電池殼體係由一層疊板組成,該層壘板 具有一樹脂層及一金屬層,其中該電池製備方法包括:(a) 將該電極組組設於該電池殼體内,將該電池殼體周圍,除 了一端部以外皆以熱融合及密封;(b)自該未密封之端部將 該電解質引入,接著以熱融合密封該未密封之端部;(c)將 該電池充電及放電以活化該電池;(d)刺穿該未密封部份至 該端部内以形成一貫穿孔,且該貫穿孔係連通該電池殼體 之内部;以及(e)當供應真空壓力時,將該電池殼體之頂面 及底面之未密封部份以互相相反之方向拉動,以打開該電 池殼體’以移除活化所產生之氣體及過多之電解質。 【先前技術】 隨著行動裝置技術的快速發展,以及對行動裝置需求 與曰俱增’對於作為電源的電池的需求亦大幅提昇。據此, 為滿足大量需求’電池已被進行廣泛的研究。 就典型的電池結構而言,如角狀(angled)二次電池及袋 型(pouch type)二次電池之需求相當高,因其厚度較薄且可 應用於如行動電話(亦稱為「手機」)等用品上。而就原物 料而§,如鋰離子電池、經離子高分子電池等之裡二次電 201246657 池’其具有高能量密度、高放電電壓及/或輸出穩定度等優 點,而被廣泛的使用。 另外,可根據電極組(具有陰極/分離膜/陽極結構)的結 構作為二次電池分類之依據,例如:一膠卷(捲繞 型)(]6117-1*〇11(%丨11(111^1706))電極組,其具有一捲繞陰極及 陽極之結構’且該陰極及陽極之間設置有一分離膜;一堆 疊(層疊型)(stack (laminate type))電極組,其具有複數個以 預設尺寸切割且依序堆疊之陰極及陽極,且該陰極及陽極 之間係設有分離膜;一堆疊/摺疊(stack/folding)電極組,其 具有一捲繞雙極電池(bi-cell)或全電池(full cell)之結構,且 該具有預設尺寸之陰極及陽極之間設置有一分離膜等。 袋型電池之結構係在鋁層綦板中組設一堆疊型或一堆 疊/摺壘型電極组。近年來,由於袋型電池製造成本低、輕 量、形狀易變化等,使得袋型電池受到重視且使用率也逐 漸增加。 圖1係習知袋型電池之一般结構之***透視圖。 如圖1所示,一袋型電池10包含一電極組30、由電極組 30延伸之電極片40與50、焊接於電極片40與50的電極端60 與70、以及一用以容置電極組3〇之電池殼體20。 該電極組30係為一種電能產生元件,其包含依序疊合 的陰極及陽極,且陰極及陽極之間係設置有分離膜。該電 極組30可具有一堆疊型或堆疊/折疊型結構。該電極片40與 50可由其所對應之電極組3〇的電極板所延伸。該電極端60 與70係由電極板所延伸’且透過如焊接之方式分別和複數 201246657 個電極片40與50電性連接。此外,絕緣膜80可部份貼覆於 電極端60與70之上、下表面,用以改善電池殼20與電極端 60與70間的密封度,以確保電池殼體20及電極端60與70之 電絕緣特性。 該電池殼體20可具有一空間以容置該電極組30,且該 電池殼體20係一袋型結構。如圖1所示,該電極組30係為一 層疊型電極組,以使複數個陰極片40及複數個陽極片50得 以與電極端60與70結合,該電池殼20内部上端與電極组30 間具有一預設距離。 為了製造一電池,包含上述袋型電池之二次電池,在 電池的製造過程中,大多經過充電-放電以活化該電池,而 活化所產生之氣體則須移除;此步驟可被稱為一「脫氣 (degassing)j 步驟。 然而,上述習知袋型電池之製造過程存在一些問題: 脫氣步驟需要長時間以移除氣體,其中係切斷密封端使氣 體被放出,此將增加製造成本;且該氣體及過多的電解質 並未完全被移除,此導致熱聚合密封之步驟失敗。 據此,目前亟需能夠解決上述習知問題之技術。 【發明内容】 技術問題 因此,本發明係以解決上述習知問題,及克服此技術 領域之技術限制。 6 201246657 更具趙地,本發明之一目的係提供一種電池製備方法 以改善品質及產率,該方法包括:在經由充電_放電活化該 電池之後’刺穿該未密封部份至該端部内以形成一貫穿 孔’且該貫穿孔係連通該電池殼體之内部;且當供應真空 屋力時’拉動該電池殼體之頂面及底面之未密封部份,以 打開該電池殼體’以移除活化所產生之氣體及過多之電解 質0 本發明之另一目的係提供一種簡單步驟之電池製備方 法,其可破保如上述之產率及品質。 解決方法 為了達到上述目的,本發明提供了一種電池製備方 法’該電池包含一電極組及一提供於一電池殼體中之電解 質,該電池殼體係由一層疊板组成,該層疊板具有一樹脂 層及一金屬層’其中該電池製備方法包括:(a)將該電極组 組設於該電池殼體内,將該電池殼體周圍,除了一端部以 外皆以熱融合及密封;(b)自該未密封之端部將該電解質引 入,接著以熱融合密封該未密封之端部;(c)將該電池充電 及放電以活化該電池;(d)刺穿該未密封部份至該端部内以 形成一貫穿孔,且該貫穿孔係連通該電池殼體之内部;以 及(e)當供應真空壓力時,將該電池殼體之頂面及底面之未 密封部份以互相相反之方向拉動,以打開該電池殼體,以 移除活化所產生之氣體及過多之電解質。 因此,與任何習知電池之製備方法相比,本發明之電 池之製備方法包含有刺穿該未密封部份至該端部内以形成 201246657 一貫穿孔之步驟,且該貫穿孔係連通該電池殼體之内部; 及當供應真空壓力時,將該電池殼體之頂面及底面之未密 封部份以互相相反之方向拉動之步驟,以打開該電池般 體,以移除活化所產生之氣體及過多之電解質。 由於氣體及過多之電解質在真空下係完全被移除,因 此可改善該電池之品質,如安全性及電池之使用壽命,而 其係藉由熱融合密封之部分具高結合能力(bonding ability) 所達成。 例如,裡二次電地可包含:如包括LiCo02之链過渡金 屬氧化物之陰極活性材料,及包括破材料之陽極活性材 料;且該電池可在陽極和陰極間***一聚稀烴類(polyolefin 一 based)之多孔性分離膜,及其中使用一含鋰鹽(如LiPF6) 之非水性電解質。當該電池被充電時,陰極活性材料中的 鋰離子係放電,並進入陽極之碳層。反之,在放電過程中, 在陽極碳層中的鋰離子係放電,並進入陰極活性材料。就 此而言,該非水性電解質之功能係作為陽極和陰極間之鋰 離子移動之媒介》基本上,此鋰二次電池於電池之電壓控 制範圍内係穩定的,且傳遞離子之速度相當快。 此外,在連續充電及放電過程中,該電解質係在陽極 活性材料之表面上被分解,因此產生氣體;而在充電及放 電過程初期,陽極活性材料之表面上形成一 SEI膜以抑制再 度產生氣體。據此,用以活化該電池之步驟(c)係在完成電 池之末期之前,必定需要形成SEI膜。 8 201246657 m ' 根據本發明,該層疊板具有一層疊結構,其包括一外 樹脂層、一用以阻擋空氣與濕氣之阻障金屬層、及一熱融 合之内樹脂層。 外樹脂層可對外部環境有良好抵抗性,因此需要一定 程度以上的張力強度及耐候性。為此,用於外塗佈層之聚 合物樹脂,可使用包含有具較佳張力強度與耐候性之聚萘 二甲酸乙二醇醋(polyethylene naphthalate (PEN))、聚對苯 二甲酸乙二醋(polyethylene terephthalate (PET))或取向尼 龍(oriented nylon) 0 此外,外塗佈層之材質可為聚萘二甲酸乙二醇酯(PEN) 及/或其外表面係具有苯二甲酸乙二酯層(PET)。 與聚對苯二甲酸乙二酯(PET)相比,聚萘二甲酸乙二醇 酯(PEN)即使厚度很薄,仍具有優秀的張力強度以及耐候 性,因此適合作為外部塗佈層。 内樹脂層的聚樹脂可為具有熱融合特性(熱黏結特 性)、對電解質之低吸性低之聚合物樹脂,以防止電解質溶 液滲入其中,且減少因電解質溶液而膨脹或沉積。較佳地, 該聚合物樹脂可包括一非延展(non-stretched)之氣化聚丙 稀(polypropylene)薄膜(CPP)。 於較佳的實施例中,本發明之該層疊板的外塗佈層厚 度可為5至40//m,阻障層的厚度可為20至150烊m,且内密 封層的厚度可為10至50仁m。當層疊板各層的厚度過小時, 材料的阻障效能以及張力的改善會無法達成;而另一方 201246657 面,當厚度過大時,則會產生生產性惡化以及厚度增加等 缺點。 該電極組並無特別限制,僅該結構為連接複數個電極 片以構成一陰極和一陽極。較佳為,可使用一捲繞型、一 堆疊型、及/或一堆疊/摺叠型之結構。例如,具有如上述之 堆疊/摺4型結構之電極組,已被詳述於先前案例:韓國公 開號2001-0082058、2001-0082059及2001-0082060,並且其 内容完全併入本發明中,以供參酌。 該電池殼體可具有不同的形狀,較佳地,以平面方式 觀察時中係為矩形。藉此,該電池殼體的端部可為一端緣 (edge side)〇 於此情況下,上述端緣之寬度可比其他端緣之寬度大 20至300%,且上述端緣之底端可由活化之熱融合密封。 舉例而言,若上述端緣之寬度小於其他端緣之每一寬 度之20%,上述端緣的空間不足以收集所需的氣體量。反 之,若上述端緣之宽度大於其他端緣之每一寬度之300%, 端緣的範圍增加,造成製程成本增加。因此,就經濟方面 而言,前述情形不適合使用。 於敉佳的實施例中,真空壓力係於將該電池殼體之頂 面及底面朝向彼此拉動時提供,即藉由一吸引裝置以相反 方向拉動,以簡單地藉由吸引裝置將電池内的氣體放出, 其中該吸引裝置因真空壓力而提升吸引力。 更具體地,在該吸引裝置於真空下吸引該電池殼體之 頂面及底面且頂面及底面間的空間開啟以確保一排放路徑 201246657 w • (「出口」)之後,該氣體及電解質可經由真空吸引而被 排出。 例如,該吸引裝置可包括一第一吸引墊及一第二吸引 墊’其中該第一吸引墊係與該電池殼體之頂面接觸,且該 第二吸引墊係與該電池殼體之底面接觸。 於此情況下,每一第一吸引墊及第二吸引墊可具有一 結構’其包括一附著部及一中空部,其中該附著部係與該 電池殼體之外側接觸,且該中空部係與該附著部連接;每 一第一吸引墊及第二吸引墊係與形成於該電池殼體之未密 封部份之一貫穿孔連通,並供應真空壓力β 本發明也可作為一種加速電池活化以快速於未密封部 分收集氣體之方法》 例如’此加速步驟可為:將該電池加熱以於步驟(c)至 (e)之至少一個步驟中增加該電解質之溫度,而提升流動性。 換言之,在電解質之黏度下降時,提供該電池熱能可 活化氣體的移動性,以加速該氣體及該電解質順利的排出。 若上述之加熱電池的步驟係包含於步驟(c)中,加熱可 能會影響該電池之充電-放電過程。因此,較佳在步驟(d) 和(e)之其中一個加入該加熱電池的運用。 於此情況下,該加熱運用之溫度可介於40至80X之範 圍’例如,若該溫度少於40X,該電池的活化無法進行所 需的充電-放電過程;若該溫度高於8(TC,該電池會過度活 化(hyperactive),且可能會引起電池***,故不適當。 201246657 於較佳的實施例中’步驟(c)至(e)之至少一個步驟中, 可供應超音波震盪於該電池。 然而’若該超音波震盪之運用係包含於步驟(c)中以活 化該電池’可能會影響電池的充電放電過程。因此,較佳 在步驟(d)和(e)之其中一個加入該超音波震盪的運用。 於此情況下’超音波的頻率可介於約15 kHz至100 kHz 之範圍内。 並且’根據本發明之電池製備方法,在上述步驟(e)之 後可更包括步驟:將該未密封部份之内側透過熱融合密 封’接著將其餘部分(外部)切斷。 此外,本發明可提供一種由上述方法所製備之電池。 該電池可為一链二次電池。裡二次電池可包含一陰 極、一陽極、一分隔膜、及一含鋰鹽之非水性電解質。 製造該陰極例如可藉由以下方式製備:混合一陰極混 合物於一溶劑(如NMP)中以調配一漿料,接著塗佈漿料至一 陰極電流收集器,並乾燥該混合物。 該陰極混合物除了包含一陰極活性材料,可選擇性包 含一導電材料、一黏結劑、及一填充劑等。 陰極活性材料係作為可造成電化學反應的物質,其係 鋰過渡金屬氧化物(包括二個以上之過渡金屬),其例子可包 括,但不限於:層狀化合物,如經一個或以上之過渡金屬 取代之鋰鈷氧化物(LiCo02)或鋰鎳氧化物(LiNi02);經一 個以上之過渡金屬取代之鋰錳氧化物;鋰鎳氧化物,且係 由式LiNibyMyOz (其中 ’ M = Co、Μη、Al、Cu、Fe、Mg、 12 201246657 B、Cr、Zn、或Ga,該經錄氧化物包含此些元素之一個以 上,且O.Ol^y^O.7)所表示;鋰鎳鈷錳複合氧化物,且係由 式 Li1+zNibMncC〇i.(b+c+d>MdO(2.e>Ae 所表示(其中, -〇.5<z<0.5 » 0.1<b<0.8 > 0.1<c<0.8 * 0<d<0.2 » 0<e<0.2 » b+c+d<l,M = A卜 Mg、Cr、Ti、Si、或 Y,A = F、P、或 Cl)’WLii+zNii/3C〇i/3Mni/3〇2 4Lii+zNi〇,4Mn〇.4Co〇.2〇2;#& 稀烴類(olefin-based)链金屬填酸化物,且係由式 LiwMbyM’yPOkXJ其中,M=過渡金屬,較佳為Fe、Mn、 Co、或Ni,M’ = A卜 Mg、或Ti,X = F、S、或N,-0.5SXS+0.5, 〇SyS〇.5,以及OSzSO.l)所表示。 以該包含有陰極活性材料混合之總重量為基準,該導 電材料一般的添加量為1至30重量百分比。只要導電材料具 有適當的導電性,且不會造成對電池不利之化學改變,皆 可用於本發明中。導電材料之例子可包含:石墨(如天然石 墨或人造石墨);碳黑(如,碳黑、乙炔黑、科琴黑(Ketjen black)、槽黑(channel black)、爐黑(furnace black)、燈黑(】amp black)、以及熱黑(thermal black));導電纖維,例如碳織維 及金屬纖維;金屬粉末,例如氟化碳粉末、鋁粉末、以及 鎳粉末;導電鬍,如氧化鋅及鈦酸鉀;導電金屬氧化物, 例如氧化鈦;導電物質如聚亞苯基衍生物(polyphenylene derivatives);以及相似物。 上述黏結劑可幫助將電極活性材料與導電材料組合且 與集流器黏結。黏結劑一般的添加量為1至30重量百分比, 此係以該包含有陰極活性材料之混合物的總重量為基準計 13 201246657 算。黏結劑的例子可包括:聚偏氟乙稀(polyvinylidene fluoride)、聚乙稀醇(polyvinyl alcohol)、叛甲基織維素 (carboxymethylcellulose (CMC))、激粉(starch)、經丙基纖 維素(hydroxypropylcellulose)、再生織維素(regenerated cellulose)、聚乙稀四氫洛萌(polyvinylpyrrolidone)、四襄乙 稀(tetrafluoroethylene)、聚乙稀(polyethylene)、聚丙稀 (polypropylene)、乙稀-丙稀-二稀三元共聚物(ethylene propylene diene terpolymer (EPDM))、罐化 EPDM (sulfonated EPDM)、苯乙稀丁二稀橡膠(styrene butadiene rubbers)、氣橡應(fluoro rubber)、及各種共聚物。 填充劑係一補充成分,選擇性用以抑制陰極膨漲。任 何填充劑皆可使用,無特殊限制,只要是包含織維性材料 且在電池生產過程中不會造成對電池不利的化學改變即 可。填充劑的例子可包括:烯烴(olefin)聚合物,如聚乙烯、 及聚丙烯等;以及織維材料,如玻璃織維、及碳織維等。 上述陰極集流器一般之厚度係為3至500 “οι。在此, 任何陰極集流器皆可使用,無特殊限制,只要其具有適當 的導電性,且在電池生產過程中不會造成對電池不利的化 學改變即可。陰極集流器之例子可包括:不鏽鋼、鋁、鎳、 鈦、燒結碳、以及表面以碳、鎳、鈦、或銀等處理的鋁或 不鏽鋼》集流器表面可具有微細的不規則物,以加強對電 極活性材料的黏著度。此外,集流器可以各種形式呈現, 包括薄膜、片狀、箔狀、網狀、孔洞結構、泡沫狀、以及 不織布狀等。 201246657 例如,陽極可透過以下方式製作:將含陽極活性材料 之陽極混合物塗佈至一陽極集流器,並接著乾燥;其中, 該陽極混合物可選擇性包含上述成份,即一導電材料、一 黏結劑、及一填充劑等。 陽極活性材料的例子可包括:碳與石墨材料,如天然 石墨、人造石墨、膨寐石墨(expanded graphite)、碳纖維、 非石墨化碳(通常係指硬碳(hard carbon))、碳黑、奈米碳管、 破60(fullerene)、活性礙;可與裡合金化之金屬,如Al、Si、 Sn、Ag、Bi、Mg、Zn、In、Ge、Pb、Pd、Pt、及 Ti等以及 含有此些元素之化合物;碳與石墨材料與金屬的複合物、 及其化合物;含鋰氮化物。其中,較佳為碳基活性材料、 矽基活性材料、錫基活性材料、或矽碳基活性材料。該些 材料可單獨使用或互相组合使用。 陽極集流器一般之厚度係為3至500μιη»在此,任何陽 極集流器皆可使用,無特殊限制,只要其具有適當的導電 性,且不會造成對電池不利的化學改變即可。陽極集流器 之例子包括:銅、不鏽鋼、鋁、鎳、鈦、燒結碳、以及表 面以碳、鎳、鈦、或銀處理的銅或不鏽鋼、以及鋁鎘合金 等。與陰極集流器相似,陽極集流器的表面可具有微細的 不規則物,以加強對電極活性材料的黏著度。此外,集流 器可以各種形式呈現,包括薄膜、片狀、箔狀、網狀、孔 洞結構、泡洙狀、以及不織布狀等。 本發明之分離膜係配置於陰極及陽極之間。關於分離 膜,可使用具有高離子穿透性以及優異機械性質的絕緣薄 201246657 膜。一般’分離膜的孔洞大小為〇·〇1至1〇 μπι,厚度為5至 300 μιη。關於分離膜’可使用烯烴(〇lefin)聚合物(如聚丙烯) 及/或玻璃纖維或聚乙烯所製得之板材或不織布,奇具有抗 化學特性及疏水性。當使用包含聚合物之固態電解質在此 作為電解質,固態電解質亦可同時作為分離膜以及電解質》 本發明所使用之該含鋰鹽之非水性電解質係包含非水 性電解質與鋰鹽,非水性電解質的可為:非水性有機溶剤、 有機固態電解質、無機固態電解質、及類似物。 該非水性有機溶剤可為非質子有機溶劑,包括:N-甲 基0比洛炫萌(N-methyl-2-pyrrolidinone)、丙稀竣酸酯 (propylene carbonate)、乙稀破酸酯(ethylene carbonate)、丁 稀碳酸酯(butylene carbonate)、二甲基碳酸酯(dimethyl carbonate)、二乙基稀碳酸酯(diethyl carbonate)、加馬丁内 酯(gamma-butyrolactone)、卜 2-二甲氧基已烧(1,2-dimethoxy ethane)、四經基法蘭克(tetrahydroxy franc)、2-甲基四氣咳 鳴(2-methyl tetrahydrofuran) 、二 甲亞填 (dimethylsulfoxide)、1,3-二氧五環炫(l,3-dioxolane)、甲酿 胺(formamide)、二甲基甲酿胺(dimethylformamide)、二氧 戊環(dioxolane)、乙腈(acetonitrile)、頌基曱炫 (nitromethane)、甲酸甲醋(methyl formate)、2* 酸甲酷(methyl acetate)、填酸三醋(phosphoric acid triester)、三甲氧基甲烧 (trimethoxy methane)、二氧戊環衍生物、環丁礙 (sulfolane)、甲基薩弗蘭(methyl sulfolane)、1,3-二甲基-2-咪吐淋闕(l,3-dimethyU2-imidazolidinone)、丙稀碳駿醋衍 201246657 生物、四氫°夫味衍生物、醚類(ether)、丙酸曱醋(methyl propionate )、丙酸乙酯(ethyl propionate)、或其相似物等》 有機固態電解質的例子包括:聚乙烯衍生物、聚乙烯 氧化物衍生物(polyethylene oxide derivatives)、聚丙稀氧化 物衍生物(polypropylene oxide derivatives)、填酸酯聚合物 (phosphoric acid ester polymers)、聚援動離胺後(poly agitation lysine)、聚酷硫化物(polyester sulfide)、聚乙稀醇 (polyvinyl alcohols)、聚二氣亞乙稀(polyvinylidene fluoride)、含有離子解離基困的聚合物、或其相似物等。 無機固態電解質的例子包括:鋰之氮化物、南化物、 以 / 或硫化物,例如 Li3N、Lil、Li5NI2、Li3N-LiI-LiOH、 LiSi04 、 LiSi04-LiI-LiOH 、 Li2SiS3 、 Li4Si04 、 Li4Si04-LiI-Li0H、及 Li3P04-Li2S-SiS2等》 鋰鹽係為可溶於上述非水性電解質的材料,其例子可 包括:LiCl、LiBr、Lil、LiC104、LiBF4、LiB10Cll0、LiPF6、 LiCF3S03、LiCF3C02、LiAsF6、LiSbF6、LiAlCL»、CH3S03Li、 CF3S〇3Li、(CF3S〇2)2NLi、链氯砸烧(chloroborane lithium)、 短鏈脂肪族碳酸經(lower aliphatic carboxylic acid lithium)、四苯基棚酸链(lithium tetraphenyl borate)、亞胺 (imide)、或其相似物等e 此外,為了提升充電/放電特性以及阻燃性。例如,可 將础咬(pyridine)、三乙基亞麟酸醋(triethylphosphite)、三 乙醇胺(triethanolamine)、環謎類(cyclic ether)、己二胺 (ethylenediamine)、η-甘醇二甲謎(n-glyme)、六填酸三酿胺 201246657 (hexaphosphoric triamide)、苯胺衍生物(nitrobenzene derivatives)、硫(sulfur)、趣亞胺染料(quinone imine dyes)、 經氣取代之嗔峻林酮(N-substituted oxazolidinone)、N,N-取 代之咪吐咬(N,N-substituted imidazolidine)、乙稀乙二醇二 炫•基鍵(ethylene glycol dialkyl ether)、錄鹽(ammonium salts)、洛(pyrrole)、2-甲氧基乙醇(2-methoxy ethanol)、 三氣化IS (aluminum trichloride)或相似物添加至非水性電 解質中。為了具有耐燃性,該非水性電解質可視所需而更 包括含鹵素溶劑,例如四氣化碳及三氟乙稀。此外,為了 提升高溫儲存特性,非水性電解質可更包括二氧化碳氣體。 本發明所製備之二次電池可用於電池中作為小裝置的 電力源、或是作為需要高溫穩定性、長循環特性、以及高 速特性及相似性質之包含複數個電池(作為中型及/或大型 裝置之電力源)的中型或大型電池模組的單位電池中的電 力源。 中型或大型裝置較佳可包括,但不限於:電池驅動馬 達的電源工具;電動車(EV)、複合動力車(HEV)、以及插電 式複合動力車(PHEV)等電力車;電動腳踏車(E-bikes)、速 克達(scooters)等電動兩輪車;電動高球車等。 本發明也可提供一種裝置,用以移除過多電解質、及 電池製備方法中之活化步驟時所產生之氣體。 更具體地本發明裝置之結構可包括: 一支持器,係用以组設一電池,且一電池殼之一端上 形成有一貫穿孔且係以一方向突出; 201246657 一壓塊,用以加壓電池頂部,該電池係組設在該支持 器上; 一對密封塊,其係設於該支持器之一外側,以透過熱 融合密封該電池殼體之端部;以及 一對吸引墊,當供應真空壓力時,從該形成有該貫穿 孔之電池殼之該端,以互相相反之方向拉動其頂面及底 面,以打開該電池殼體,以移除過多之電解質及活化所產 生之氣體。 據此,由於上述裝置包含一對吸引墊,當供應真空壓 力時,可於形成有一貫穿孔之電池殼體之一端,以互相相 反之方向拉動其頂面及底面,以打開該電池殼體,以快速 且完全移除過多之電解質及活化所產生之氣體。 本發明裝置可藉由壓塊強力加壓該電池,以加速該氣 體及該電解質順利的排出。 於本發明之較佳實施例中,該支持器内可裝設有一加 熱器,以加熱該電池。 因此,該加熱器加熱該電池,可增加該氣艘之動能, 且同時該吸引墊可在真空下吸引該氣體,因此,上述裝置 可有效減少移除氣體所需的時間。 根據本發明另一實施例,該支持器可設有一超音波震 盪器,以供應超音波震盪於該電池。 據此,該超音波震盪器供應超音波震盪於該電池,可 增加該氣體之動能,同時該吸引墊可在真空下吸引該氣 體,因此,上述裝置可有效減少移除氣體所需的時間。 201246657 【實施方式】 於此,本發明之一較佳實施例將配合參照圖式,加以 詳述於下。然而,需注意的是,本發明之技術範疇與精神 並不受到此些實施例之限制。 囷2至囷7分別係本發明之一較佳實施例之製備一電池 之方法示意圖。 根據圓示,一電池之製備方法將於以下詳述之。 首先,如圖2所示,組設一電極組11〇於電池般趙130 之接收部120,將該電池殼體130摺疊成一半。 接著,如圓3所示,電極组110組設於電池殼體130之接 收部120 ’將該電池殼體130周圍,除了 一端部150以外皆以 熱融合及密封。 更具體地,設置於電池殼體130中之電極組11〇係與電 極端112,114連接,電池般體130係由層疊板組成且一側具 有接收部120。再者,經由熱壓合,於四側中,除了另一側 150維持未密封狀態以外,包含頂側之三側形成密封部 140,其中頂側組設有電極端112,114。自該未密封部15〇 將該電解質引入,如圖4所示,接著,未密封部150之端緣 之底端162係以熱融合處理;再藉由充電及放電活化該電池 100。 過多之電解質及活化所產生之氣體係收集至未密封部 分 150。 接著’如圖5所示’刺穿未密封部!50至該端部内以形 成一貫穿孔163,且該貫穿孔163係連通電池殼體130之内 20 201246657 部,當供應真空壓力時,將電池殼體130之頂面及底面之未 密封部150以互相相反之方向拉動,以打開該電池殼體,使 移除活化所產生之氣體及過多之電解質。 最後,如圖6和圖7所示,將鄰近電極組110之未密封部 份之内側164透過熱融合密封,接著將其餘外部切斷以完成 該電池110。 此外,參照圖3,於平面圖中電池殼體130可為一矩形 結構,其中端緣150之寬度「W」係比其他端緣之每一寬度 「W」大200 %。 圖8至圖10分別係本發明之另一較佳實施例之氣體移 除裝置之截面示意圖。 首先,同時參照圖8及圖5,該氣體移除裝置200係用以 移除電池之過多電解質及活化所產生之氣體,該裝置包 括:一支持器210、一對密封塊220、一吸引裝置230、及一 與該吸引裝置230連接之真空吸引線232。 支持器210係設有電池100,且電池殼體130之端部150 上形成有一貫穿孔163,端部150係以一方向突出;一對密 封塊220係設於支持器210之外側,用以透過熱融合密封該 電池殼體130之端部150。 當供應真空壓力時,吸引裝置230可將電池殼體130之 頂面及底面之端部150以互相相反之方向拉動,以移除過多 之電解質及活化步驟時所產生之氣體;其中端部150上形成 有一貫穿孔163» 21 201246657 如圖9所示,除了該氣體移除裝置200a具有一壓塊240 組設在該電池100頂部,用以加壓電池100頂部;以及一加 熱器250設置於該支持器210内,用以加熱該電池100及增加 該氣體之動能以外,氣體移除裝置200a係與圖8之氣體移除 裝置200大致相同。因此,省略其詳述。此外,壓塊240也 可以包含於圓8之裝置100及圓10之裝置200b中。 如圊10所示,除了該支持器210内設置有一超音波震盪 器260,以供應超音波震盪於該電池100及增加該氣體之動 能以外,氣體移除裝置200b係與囷8之氣體移除裝置200大 致相同。因此,省略其詳述》 囷11係吸引裝置230之放大示意圖,吸引裝置230包括 一第一吸引墊230a及一第二吸引墊230b,其中該第一吸引 墊230a係與該電池般體130之頂面接觸,且該第二吸引墊 230b係與該電池般體130之底面接觸。 於此,第一吸引墊230a及第二吸引墊230b分別具有一 附著部234及中空部236,其中該附著部234係與該電池殼體 130之外側接觸,且該中空部236係與該附著部234連接;第 一吸引墊230a及第二吸引墊230b分別與該電池殼體130之 未密封部份150中形成之貫穿孔163連通,並供應真空壓力。 上述實施例僅係為了方便說明而舉例而已,本發明所 主張之權利範圍自應以申請專利範圍所述為準,而非僅限 於上述實施例。 【產業利用性】 22 201246657 由上述裝置,本發明之電池製備方法包含:進行充電 及放電以活化該電池;刺穿該未密封部份至該端部内以形 成一貫穿孔,且該貫穿孔係連通該電池殼體之内部;以及 在供應真空壓力時,將該電池殼體之頂面及底面之未密封 部份以互相相反之方向拉動》因此,過多之電解質及活化 所產生之氣體可以快速且完全被移除。 【圖式簡單說明】 為讓本發明之上述與其他目的、特徵、和優點能更明 顯易僅,配合所附囷式加以說明較佳實施例,其中: 圓1係習知袋型電池之一般結構之***透視圓。 0 2至囷7分別係本發明之一較佳實施例之製備一電池之連 績過程示意圊。 圓8至圖10分別係本發明之另一較佳實施例之氣體移除裝 置之截面示意圖。 圖11係本發明圖8之吸引墊之放大示意圖》 【主要元件符號說明】 10袋型電池 20電池殼體 30電極組 40, 50電極片 60, 70電極端 80絕緣膜 164内側 W端緣150之寬度 w其他端緣之寬度 200, 200a,200b氣體移除裝置 210支持器 220 —對密封塊 23 201246657 100 電池 230 110 電極組 230a 112, 114電極端 230b 120 接收部 232 130 電池殼體 234 140 密封部 236 150 未密封之端部 240 162 底端 250 163 貫穿孔 260 吸引裝置 第一吸引墊 第二吸引墊 真空吸引線 附著部 中空部 壓塊 加熱器 超音波震盪器 24
Claims (1)
- 201246657 七、申請專利範圍: 1. 一種電池製備方法,該電池包含一電極組及一提供 於一電池殼體中之電解質,該電池殼體係由一層疊板組 成’該層疊板具有一樹脂層及一金屬層,其中該電池製備 方法包括: (a) 將該電極組組設於該電池殼體内,將該電池殼體 周圍’除了一端部以外皆以熱融合及密封; (b) 自該未密封之端部將該電解質引入,接著以熱融 合密封該未密封之端部; (c) 將該電池充電及放電以活化該電池; (d) 刺穿該未密封部份至該端部内以形成一貫穿孔, 且該貫穿孔係連通該電池殼體之内部;以及 (e) 當供應真空壓力時,將該電池殼體之頂面及底面 之未密封部份以互相相反之方向拉動,以打開該電池殼 趙,以移除活化所產生之氣體及過多之電解質。 2. 如申請專利範圍第1項所述之電池製備方法,其 中’該層疊板具有一積層結構,其包括一外樹脂層、一用 以阻擋空氣與濕氣之阻障金屬層、及一熱融合之内樹脂層。 3. 如申請專利範圍第1項所述之電池製備方法,其 中,該電極組具有一捲繞型、堆疊型或堆疊/摺疊型結構。 4. 如申請專利範圍第1項所述之電池製備方法,其 中,該電池殼體以平面方式觀察時係為一矩形結構,且該 端部係該電池殼體之一端緣。 25 201246657 5. 如申請專利範圍第4項所述之電池製備方法,其 中,該端緣之寬度係比其他端緣之每一寬度大2〇至3〇〇〇/。, 且該端緣之底端係於活化之熱融合過程中密封。 6. 如申請專利範圍第1項所述之電池製備方法,其 中’當供應真空壓力時,藉由一吸引裝置將該電池般想之 頂面及底面以相反方向拉動。 7. 如申請專利範圍第6項所述之電池製備方法,其 中,該吸引裝置包括一第一吸引塾及一第二吸引塾,其中 該第一吸引墊係與該電池殼體之頂面接觸,且該第二吸引 墊係與該電池殼體之底面接觸。 8. 如申請專利範圍第7項所述之電池製備方法,其 中,每一第一吸引墊及第二吸引墊具有一結構,其包括一 附著部及一中空部,其中該附著部係與該電池殼體之外側 接觸,且該中空部係與該附著部連接;每一第一吸引塾及 第二吸引墊係與形成於該電池殼體之一未密封部份之貫穿 孔連通,並供應真空壓力。 9. 如申請專利範圍第1項所述之電池製備方法,其 中’於步驟(c)至(e)之至少一個步驟_,係將該電池加熱。 10. 如申請專利範圍第1項所述之電池製備方法,其 中,於步驟(c)至(e)之至少一個步驟中,係供應超音波震藍 於該電池。 11. 如申請專利範圍第1項所述之電池製備方法,其 中,在步驟(e)之後更包括步驟:將該未密封部份之内側透 過熱融合密封,接著將其餘外部切斷。 26 201246657 • 12. —種電池,其係如申請專利範圍第1項至第11項所 述之任一項製備方法所製造。 13. 如申請專利範圍第12項所述之電池,其中,該電池 係一鋰二次電池。 14. 一種裝置,其係依照如申請專利第1項之方法移除 過多電解質、及活化步驟時產生之氣體,該裝置包括: 一支持器,係用以組設一電池,且該電池殼體之一端 上形成有一貫穿孔且係以一方向突出; 一壓塊,用以加壓電池頂部,該電池係组設在該支持 器上; 一對密封塊,其係設於該支持器之一外側,以透過熱 融合密封該電池殼體之端部;以及 一對吸引墊’當供應真空壓力時,將該形成有該貫穿 孔之電池殼體之該端,以互相相反之方向拉動其頂面及底 面’以打開該電池殼體,以移除過多之電解質及活化所產 生之氣體。 15·如申請專利範圍第14項所述之裝置,其中,該支持 器内裝設有一加熱器,以加熱該電池。 16·如申請專利範圍第14項所述之裝置,其中,該支持 器具有一超音波震盡器’以供應超音波震里於該電池。 八、圖式(請見下頁): 27
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US20130244093A1 (en) | 2013-09-19 |
KR101304870B1 (ko) | 2013-09-06 |
EP2648261B1 (en) | 2017-03-08 |
EP2648261A2 (en) | 2013-10-09 |
JP5593454B2 (ja) | 2014-09-24 |
EP2648261A4 (en) | 2016-01-20 |
WO2012074212A2 (ko) | 2012-06-07 |
WO2012074212A3 (ko) | 2012-09-07 |
JP2014502024A (ja) | 2014-01-23 |
CN103201890A (zh) | 2013-07-10 |
TWI436515B (zh) | 2014-05-01 |
CN103201890B (zh) | 2016-01-06 |
KR20120060707A (ko) | 2012-06-12 |
US8974955B2 (en) | 2015-03-10 |
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