TW454360B - Lithium secondary cell and method of fabricating the same - Google Patents

Lithium secondary cell and method of fabricating the same Download PDF

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TW454360B
TW454360B TW089103921A TW89103921A TW454360B TW 454360 B TW454360 B TW 454360B TW 089103921 A TW089103921 A TW 089103921A TW 89103921 A TW89103921 A TW 89103921A TW 454360 B TW454360 B TW 454360B
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lithium secondary
plates
cathode
anode
plate
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TW089103921A
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Ji-Jun Hong
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Kokam Engineering Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/36—Accumulators not provided for in groups H01M10/05-H01M10/34
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0431—Cells with wound or folded electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H01M10/0583—Construction or manufacture of accumulators with folded construction elements except wound ones, i.e. folded positive or negative electrodes or separators, e.g. with "Z"-shaped electrodes or separators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/463—Separators, membranes or diaphragms characterised by their shape
    • H01M50/466—U-shaped, bag-shaped or folded
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49108—Electric battery cell making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49108—Electric battery cell making
    • Y10T29/49114—Electric battery cell making including adhesively bonding

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Secondary Cells (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Cell Separators (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)

Description

454360
五、發明說明（1) 【發明背景】 【發明領域】 本發明係關於一種鋰二次電池，具有一 態中陽極平板與陰極平板係排列成-交替形式’，' 藉該組 及-所欲容量，同時達成製造簡①。本Ξ明寸錄以 二次電池之製造方法β I月方關於-種鋰 【相關技 隨著 密、更輕 一般 三層結構 構。具有 一疊製方 依據 1 a與1 b中 由陰極2/ 二次電池 附於分隔 量而定， 藝之說明】 電信與行動電話工業之近來發展，需要一種更緻 、更行動性、且高性能的鋰二次電池。 而5 ，鋰二次電池具有一種陰極/分隔臈/陽極之 ’或陰極/分隔膜/陽極/分隔膜/陰極之五層結 合理的容量之鋰二次電池之習知的製造方法包含 法與一纏繞方法。 習知的方法所製造的鋰二次電池之結構顯示於圖 。圖la係一透視圖，顯示一種鋰二次電池，具有 分隔膜1 /陽極3所組成之結構的單位電池。此種 包含複數個單位電池，每一個單位電池具有熱黏 膜1上之電極平板2與3。視链二次電池之所欲容 複數個單位電池被疊製且相互並聯。 然而’在圖la所示之鋰二次電池中，陰極平板、分隔 膜、以及陽極平板皆相互熱黏附（疊製）。因此，當由於使 用者對電池之錯誤使用或充電器之控制微恙，而使鋰二次
4543 6 Ο 五、發明說明（2) 電池被連續過 燒。再者，使 程’以及使單 電池製造之減 圖1 b係一 造的鋰二次電 纏繞結構為陰 欲容量之單位 依據纏繞 其相對地重且 附著之位置係 末端處之另一 度充電時，其電壓 陰極平板與陽極平 位電池相互疊製之 少 0 透視圖，顯示一種 池。此種鐘二次電 極20/分隔膜1 0/陽 電池而製造。 方法所製造之鋰二 尺寸相對地大。再 限於圓柱之同心圓 電極。 【發明概述】 因而，本 種鋰二次電池 被充入的過度 種形狀與尺寸 此外，本 之製造方法。 依據本發 一分隔膜 於該分隔膜之 平板，具有一 會繼續增加以致幾乎燃 板熱黏附於分隔膜上之製 製程，係複雜的《此導致 依據習知的纏繞方法所製 池係藉由在一中心軸上， 極30且長度符合電池之所 次電池具有一圓柱形狀， 者，電極凸片（tab)40所 軸處之一電極，以及纏繞 發明之一目的在於解決前述問題，且提供一 ’具有改善的性能，且藉由防止由高電流與 電壓所引起之燃燒而特別安全，同時具有各 以及所欲容量，且達成製造簡化。 發明之另一目的在於，提供一種鋰二次電池 明之一態樣’提供一種鋰二次電池，包含： ;複數個陰極平板，具有一所欲尺寸且黏附 一表面’同時均勻地相互分離；複數個陽極 所欲尺寸且黏附於該分隔膜之另一表面，其 第6頁 454360 五、發明說明（3) 位置係對應於該複數個陰極平板；以及黏附有該陽極平板 與該陰極平板之該分隔膜被重複摺疊，使該複數個陽極平 板與該複數個陰極平板排列成一交替形式。 依據本發明之另一態樣，提供一種鋰二次電池之製造 方法’包含；f列步驟：施加一黏附劑於一分隔膜上；使具 有一所欲尺寸之複數個陰極平板黏附於該分隔膜之一表 面’其中該複數個陰極平板係均勻地相互分離；使具有— 所欲尺寸之複數個陽極平板黏附於該分隔膜之另一表面， 其中該複數個陽極平板係相互分離：以及重複摺疊黏附有 該複數個陽極平板與該複數個陰極平板之該分隔膜，使該 複數個陽極平板與該複數個陰極平板排列成一交替形式。 【較佳實施例之詳細說明】 下文中參照圖示之實施例說明將顯明本發明之前述及 其他目的與態樣。 茲將參照圖2與3 ’說明依據本發明實施例之鋰二次電
池D 如圖2所示，一未經加工的鋰二次電池，在摺疊前， 係由一種陰極平板3〇〇/分隔膜2〇〇/陽極平板4〇〇之三層結 構斤’’且成陰極平板3 0 0之製造係：施加一陰極活化劑 (activator)於由一金屬例如鋁所製成之箔（f〇i丨〉上，隨 後乾燥所形成之箔。此陰極平板被切割成具有一所期望的 ：黏附於分隔膜2〇〇之一表面上。陽極平板之製 ^ 力151加—陽極活化劑於由一金屬例如銅所製成之箔
4543 6 Ο 五、發明說明（4) 5望Π 2燥所形成之箔。此陽極平板被切割成具有-所 =的尺寸，且黏附於分隔膜2〇〇之另一表面上。在施加 活化劑之後’陰極平板3〇〇與陽極平板遭受一熱融 二製程，俾使活化劑附著於平板。用以使電極3〇〇與_絕 =隔膜2 00係由聚乙婦(PE)或聚丙稀(pp)所形成之聚 δ體多孔膜所形成’且具有—單層結構或一多房結構。 藉由不妨礙鐘離子之導電性的一離子導電黏附劑 500，使電極3 0 0與400附著在分隔臈20Q之表面上。 具有此種陰極平板300/分隔膜2〇〇/陽極平板4〇()之三 $結構之一電池平板1〇〇被重複摺疊，俾使陽極平板4〇()與 陰極平板300排列成一交替形式，如圖3所示。 茲將參照圖2與3，詳細說明依據本發明實施例之鋰二 次電池之製造方法。 如圖2所不，具有一所欲尺寸之複數個陰極平板3〇〇黏 附於分隔膜200之一表面上，同時均勻地相互分離，該分 隔膜200係用以絕緣電極。具有一所欲尺寸之複數個陽極 平板40 0黏附於分隔膜20 0之另一表面上，其黏附位置係對 應於陰極平板30 0。藉此方式，一電池平板1〇〇之—未經加 工的電池被製成，其具由陰極平板3 〇〇/分隔膜2〇〇/陽極平 板400之三層結構。 在先前技藝中，電極平板2與3被熱黏附（疊製）於分隔 膜1，以製造單位電池，且複數個單位電池被叠製以製造 電池。與此相反，在本發明中，電極平板300與4 0 0並未熱 黏附至分隔膜200。依據本發明，在陰極平板3〇〇與陽極平 454360 五、發明說明（5) -----
板400被黏附至分隔膜20 0之後，視所形成的電池之應用盘 尺寸而定，所製成的電池平板1〇〇被重複摺疊，使陽~極平、 板40 0與陰極平板3 00被排列成一交替形式，如圖3所示Y 然後’所形成的電池被黏附於電極凸片6 〇 〇，以製成^ 望的鋰二次電池。 月 由前述說明顯然可知’本發明提供一鋰二次電池及其 製造方法，其中具有一所欲尺寸之陰極平板3〇〇與陽極、 板4 00被黏附於分隔膜200上’以形成電池平板1〇〇，該電 池平板100隨後被重複摺疊，使陽極平板4〇()與陰極平/板 300排列成一種交替形式。因而’本發明使所製成的鐘二 次電池具有改善的性能，且藉由防止由高電流與被充入的 過度電壓所引起之燃燒而特別安全，同時具有各種形狀與 尺寸以及所欲容量，且達成製造簡化。 雖然因說明之故已揭露本發明之較佳實施例，但熟習 此項技藝之人士將了解各種修改、附加、與代換係可^ 的，其皆不偏離揭露於申請專利範圍中之本發明之精神與 範圍。 . 、
60454360 圖式簡單說明 圖1 a係一透視圖，顯示依據習知的疊製方法所·製造的 鋰二次電池之結構； 圖1 b係一透視圖，顯示依據習知的纏繞方法所製造的 鋰二次電池之結構； 圖2係一剖面圊，顯示依據本發明實施例的鋰二次電 池之結構；以及 圖3係一剖面圖，顯示圖2之鋰二次電池之摺疊結構。 〔符號說明〕 1 分隔膜 2 陰極/電極平板 . 3 陽極/電極平板 10 分隔膜 20 陰極 3 0 陽極 4 0 電極凸片 100 電池平板 2 0 0 分隔膜 3 0 0 陰極平板 4 0 0 陽極平板 5 0 0 離子導電黏附劑 600 電極凸片
第10頁

Claims (1)

  1. 4^54 3 d 六、申請專利範® 1.—種鋰二次電池，包含： . 一分隔膜： 複數個陰極平#，目士 „ ^ ρ , 之-表面，同往：所寸且黏附於該分隔膜 之表面’同時均勻地相互分離； 之另複陽Ϊ平板，#有一所欲尺寸且黏附於該分隔膜 之另表面，其位置係對應於該複數個陰極平板；以及 黏附有該複數個陽極平板與該複數個陰極平板之 隔膜被重複摺#，使該複數個陽極平板與極 板排列成一交替形式。 極卡 2.如申請專利範圍第1項之鋰二次電池，其中該分隔膜係 由一聚合體單或多層膜所形成，該聚合體單或 聚乙烯或聚丙烯所形成。 ’、
    第11頁
TW089103921A 1999-12-20 2000-03-03 Lithium secondary cell and method of fabricating the same TW454360B (en)

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JP (1) JP3358807B2 (zh)
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CN (1) CN1192450C (zh)
BR (1) BR0002362B1 (zh)
CZ (1) CZ290608B6 (zh)
DE (1) DE10010845B4 (zh)
FR (1) FR2802707B1 (zh)
ID (1) ID28677A (zh)
IT (1) IT1318139B1 (zh)
MY (1) MY126942A (zh)
RU (1) RU2175800C1 (zh)
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US20030008206A1 (en) 2003-01-09
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