TW200908420A - Lead member, process for producing the same and non-aqueous electrolyte accumulation device - Google Patents

Lead member, process for producing the same and non-aqueous electrolyte accumulation device Download PDF

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TW200908420A
TW200908420A TW097127249A TW97127249A TW200908420A TW 200908420 A TW200908420 A TW 200908420A TW 097127249 A TW097127249 A TW 097127249A TW 97127249 A TW97127249 A TW 97127249A TW 200908420 A TW200908420 A TW 200908420A
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Taiwan
Prior art keywords
lead
aqueous electrolyte
film
electrode
storage device
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TW097127249A
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Chinese (zh)
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TWI389373B (en
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Keitaro Miyazawa
Yutaka Fukuda
Koji Hanafusa
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Sumitomo Electric Industries
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Publication of TWI389373B publication Critical patent/TWI389373B/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004—Details
    • H01G9/08—Housing; Encapsulation
    • H01G9/10—Sealing, e.g. of lead-in wires
    • 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
    • H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/74—Terminals, e.g. extensions of current collectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/78—Cases; Housings; Encapsulations; Mountings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/78—Cases; Housings; Encapsulations; Mountings
    • H01G11/82—Fixing or assembling a capacitive element in a housing, e.g. mounting electrodes, current collectors or terminals in containers or encapsulations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
    • 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
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/117—Inorganic material
    • H01M50/119—Metals
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/121—Organic material
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
    • H01M50/126—Primary casings; Jackets or wrappings characterised by the material having a layered structure comprising three or more layers
    • H01M50/129—Primary casings; Jackets or wrappings characterised by the material having a layered structure comprising three or more layers with two or more layers of only organic material
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/131—Primary casings; Jackets or wrappings characterised by physical properties, e.g. gas permeability, size or heat resistance
    • H01M50/136—Flexibility or foldability
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/172—Arrangements of electric connectors penetrating the casing
    • H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
    • H01M50/178—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for pouch or flexible bag cells
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/547—Terminals characterised by the disposition of the terminals on the cells
    • H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
    • 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
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
    • 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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Electric Double-Layer Capacitors Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

Provided are a lead member used in a non-aqueous electrolyte accumulation device having a good bending property and may inhibiting the intrusion of moisture, a process for producing the same and a non-aqueous electrolyte accumulation device. Lead members 21a, 21b are used in a non-aqueous electrolyte accumulation device receiving an electrode body consisting of a positive electrode 11a and a negative electrode 11b and a non-aqueous electrolyte medium 13 into an enclosing envelope 6 made of a multi-layer film 10 containing a metal foil layer 8. It has lead conductors 22a, 22b connected to the electrode body and insulators 23a, 23b which are connected to the lead conductors 22a, 22b and to the inner surface of the enclosing envelope 6, the insulators 23a, 23b are formed by sandwiching the lead conductors 22a, 22b between one layer of resin film (crosslinked film 25) having a thickness of 20μ m to 40μ m and attaching them, and the whole of it is crosslinked.

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200908420 九、發明說明： 【發明所屬之技術領域】 本發明關於非水電解質蓄電裝置所使用的引線 其製法’以及使用其的非水電解質蓄電裝置。 【先前技術】 隨著電子機器的小型化，要求作爲電源的電池 化、輕量化。又，亦要求高能量密度化、高能量效 ' 作爲滿足如此要求者’對於鋰離子電池等的非水電 池之期待係愈來愈商。作爲非水電解質電池，已知 極、負極及電解液收納在由含金屬箔層的多層薄膜 封入袋內’將連接於正極、負極的電極板之引線導 到外部的構造者（例如參照專利文獻丨）。 第4(A)圖、第4(B)圖及第5圖係上述專利文獻 揭示的非水電解質電池之槪略圖。此非水電解質電 一對引線I a、1 b之取出部分各自被絕緣體3 3、3 b ’由封入袋6的密封部分1 4取出到外部的形態之薄 所形成。封入袋6的周緣部之密封部分1 4係經由熱 熔黏成爲袋狀。於封入袋6內中，密封收納正極、 隔膜等與溶解在非水溶劑（例如有機溶劑）中的電解丨 鋰化合物）之非水電解質介質。 弟4(A)圖顯不第5圖之a-a箭號方向的截面。 解質電池係將正極1 1 a及負極H b、隔膜丨2、非水 質1 3等收納於袋狀的封入袋6內，使連接於正極i 極1 1 b的引線（引線構件）丨a、1 b成爲密封狀態，取 構件及 之小型 率化， 解質電 有將正 所成的 體取出 1中所 池係由 所覆蓋 形構造 封而熱 負極、 I (例如 非水電 電解介 1 a、負 出到外 200908420 部的構造者。封入袋6係使用由在最內層薄膜7與最外層 薄膜9之間’以三明治狀貼合至少由鋁等的金屬所成的金 屬箔層8而成的密封性高之多層薄膜1 〇所形成。 而且，於裁切成矩形狀的2片多層薄膜1〇之周邊的密 封部分14，將最內層薄膜7彼此互相熔黏密封以成爲袋狀 的封入袋6。連接於正極iia、負極ilb的引線之引線導體 2 a、2 b係被絕緣體3 a、3 b所覆蓋，以便其取出部分對多層 薄膜1 〇的金屬箔層8不發生電性短路。絕緣體3 a、3 b係 接著及密封於封入袋6的指定緣部。 覆蓋此引線導體2 a、2 b的取出部分之絕緣體3 a、3 b ’係如第4(A)圖的b-b箭號方向之截面圖的第4(B)圖所示 地’例如’由貼合有由馬來酸酐改性低密度聚乙烯或馬來 酸酐改性低密度聚丙烯等的聚烯烴樹脂所成的熱塑性樹脂 薄膜所形成的熱塑性層4、與由經交聯的低密度聚乙烯等 的聚烯烴樹脂所成的交聯樹脂薄膜所形成的交聯層5之2 層所形成。 此絕緣體3 a、3 b係在引線的引線導體2 a、2 b之取出 部分，預先將絕緣體3 a ' 3 b的熱塑性層4加熱熔融而使密 封接著後，夾入封入袋6的取出口內。然後，以熱封來封 閉多層薄膜10的周邊之密封部分〗4。絕緣體3a、3b的交 聯層5 ’因爲係由在其熱封時的溫度不易熔融變形的材料 所形成，故熱封之後，在引線的引線導體2 a、2 b與多層薄 膜內的金屬箱層8之間，交聯層5殘留著，因此不必擔心 引線導體2 a、2 b與金屬箔層8的電性短路。 200908420 又’正極Ua及負極lib係在稱爲集電體的金屬箔或 金屬網等的金屬基材上形成有活性物質層的構造，引線導 體2 a、2 b係連接於電極基材之電極板。此連接係可利用點 焊或超音波熔接等。 專利文獻1 :日本發明公開：特開200 1 - 1 020 1 6號公報 【發明内容】 發明所欲解決的問顆 设於引線導體2 a、2 b之取出部分的絕緣體3 a、3 b，通 常如第4圖所說明地’係由貼合用於形成熱塑性層4的熱 塑性樹脂薄膜與用於形成交聯層5的交聯樹脂薄膜所形成 。此等樹脂薄膜係難以薄地擠壓成形，通常貼合以50μιη 左右之厚度所形成的熱塑性樹脂薄膜與交聯樹脂薄膜，厚 度之合計成爲1 00μιη左右。絕緣體的厚度若厚，則引線的 柔軟性係不充分，在絕緣體之邊端與多層薄膜之間會形成 間隙，引線與封入袋的閉封係不充分，水分會侵入封入袋 內。 又，上述專利文獻1中亦揭示在引線導體上，以熱溶 黏來貼上一層熱塑性樹脂薄膜後，從此熱塑性樹脂薄膜的 外側，以透過距離成爲比薄膜厚度還小的方式，照射經控 制的電子線，而形成交聯層，但熱塑性樹脂薄膜的厚度係 沒有講明。 本發明之目的爲提供彎曲性良好，可防止水分的侵入 之非水電解質蓄電裝置中所使用的引線構件及其製法，以 及非水電解質蓄電裝置。 解決 非水 封入 備連 j . -ί-&. 在目IJ 厚度 導體 中所 係在 極體 引線 薄膜 被覆 層的 質介 發明 知者 引線 熱性 接於 200908420 問題的手跺 本發明的引線構件係使用於非水電解質 電解質蓄電裝置係在由含金屬箔層的多 袋體中收納有電極體與非水電解質介質 接於前述電極體的引線導體、與接著於 述封入袋體之內面所接著的絕緣體，前 20μιη以上且40μιη以下的一層樹脂薄膜 貼合而形成，其全體經交聯。 又’本發明的引線構件之製法係非水電 使用的引線構件之製造方法，該非水電 由含金屬箔層的多層薄膜所成的封入袋 與非水電解質介質，其特徵爲在連接於 導體上’將由厚度2〇μιη以上且40μπ)以 所成的絕緣體以夾持前述引線導體的方 後’以電離輻射線照射前述絕緣體全體 另外’本發明的非水電解質蓄電裝置係 多層薄膜所成的封入袋體中收納有電極 質’其特徵爲具備上述本發明的引線構 的效果 依照本發明，可減薄引線構件的絕緣體 相比，可提高引線構件的柔軟性。又， 導體的接著性良好，而且藉由交聯可提 ’故可抑制絕緣體的形狀變化。因此， 封入袋體的薄膜。藉此，提高自封入袋 蓄電裝置，該 層薄膜所成的 ’其特徵爲具 該引線導體的 述絕緣體係由 夾持前述引線 解質蓄電裝置 解質蓄電裝置 體中收納有電 前述電極體的 下的一層樹脂 式進行貼合及 而進行交聯。 在由含金屬箔 體與非水電解 件。 之厚度，與習 由於絕緣體對 高絕緣體的耐 可使良好地密 體取出引線構 200908420 件的部分之密閉性，故可防止水分的侵入。再者，於形成 絕緣體的樹脂薄膜時，不必要貼合熱塑性層與交聯層，故 可消除貼合的界面之剝離或微龜裂所致的可靠性降低之可 能性。又，可實現蓄電裝置的小型化、薄型化。 【實施方式】 實施發明的昜佯形態 藉由圖式來說明本發明的實施形態之例。本發明的非 水電解質電池，係如第1圖之一例所示地，爲一對引線構 件2 1 a、2 1 b的引線導體2 2 a、2 2 b的取出部分各自被絕緣 體2 3 a、2 3 b所覆蓋，由封入袋6的密封部分1 4取出到外 部的形態之薄形構造，外觀上係與習知者大致相同的形狀 〇 作爲收納電極體、非水電解質介質等的封入袋體之封 入袋6，例如係將2片薄膜的周緣部進行熱封而成爲密封 部分1 4的袋狀者。於封入袋6內，密封收納有正極、負極 、隔膜等與溶解在非水溶劑（例如有機溶劑）中的電解質（例 如鋰化合物）之非水電解質介質（電解液）。引線構件2 1 a、 2 1 b，爲了對外部作電性連接，係由密封部分1 4取出，該 取出部分係被絕緣體23a、23b所被覆絕緣，與形成封入袋 6的多層薄膜內之金屬箔層不發生電性接觸。 第2圖係本發明的非水電解質電池之槪略圖，顯示從 第1圖所示的封入袋6之密封部分1 4的一部分，取出經絕 緣體23a、23b所覆蓋的引線構件21a、21b之引線導體22a 、2 2b到外部的構成。封入袋6係與前述第4圖之說明者 200908420 同樣地，在最內層薄膜7與最外層薄膜9之間，以三明治 狀貼合至少由鋁等的金屬所成的金屬箔層8之多層薄膜10 來形成，提高對於封入袋6內所收納的電解液之密封性。 又，封入袋6的多層薄膜1 0，例如係由3〜5層的積 層體所構成，於其最內層薄膜7中，作爲適合於防止電解 液從不溶解電解液的密封部分14漏出者，可使用聚烯烴樹 脂（例如：馬來酸酐改性低密度聚乙烯、馬來酸酐改性低密 度聚丙烯）。最外層薄膜9，由於係用於保護內側的金屬箔 層8防止外傷，故由聚對酞酸乙二酯（簡稱PET)等所形成 〇 作爲封入袋6內所收容的電解質，可使用在碳酸伸丙 酯、碳酸伸乙酯、碳酸二乙酯、碳酸二甲酯、1 ,2 -二甲氧 基乙烷、四氫呋喃等的有機溶劑中溶解有LiC104、LiBF4 、：L i P F 6、L i A s F 6等的電解質的非水電解液或鋰離子傳導性 的固體電解質等。 電極體係由夾持隔膜12而對峙的正極11a與負極lib 所構成，具有於稱爲集電體的金屬箔或金屬網的金屬基材 上形成活性物質層的構造。正極11a係由在錦箱的電極導 電體上形成由LiCo02等的還原氧化物粉末與導電劑的碳 粉末及黏合劑的黏結劑所成的活性物質而構成。 負極lib係由在銅箔所成的電極導電體上形成由碳粉 末與黏合劑的黏結劑所成的活性物質而構成。配設於正極 1 1 a與負極1 1 b之間的隔膜1 2 ’係由保持電絕緣性且保持 離子傳導性的聚烯烴系多孔膜所形成。 -10- 200908420 在正極lla、負極lib，藉由點焊或超音波 接引線構件的引線導體22a、22b，於外部電性 於正極1 1 a的引線導體22a，由於成爲正的高霉 爲以與電解液接觸不會發生溶解的方式，由與 的鋁或鈦或此等的合金所形成者。連接於負極 導體22b，由於過充電而析出鋰，過放電而電 較佳以鋰不易腐蝕，難以形成與鋰的合金，且 溶解的與電極板同樣之銅或鎳或此等的合金所 覆蓋引線構件的引線導體22a、22b之取出 體2 3 a、2 3 b，係貼合一層交聯薄膜2 5而形成 2 5係在厚度方向中全體被交聯。交聯的程度係 來定義，凝膠分率若爲20%以上，則可說是交 薄膜2 5的情況，凝膠分率未必要是1 〇 〇 %。凝 7 0% ’則可說是充分交聯。此交聯薄膜25之內 著於引線導體2 2 a、2 2 b而一體化，外側部分係 袋6的最內層薄膜7，密封封閉引線導體22a、 部分。 以上雖然以非水電解質電池之例來說明， 電容器中，也可爲與蓄電池同樣地使用電極體 質介質的構造，本發明亦可適用於如非水電解 的電雙層電容器。因此，於本發明中，以含非 池或非水電解質電容器的非水電解質蓄電裝置 非水電解質電容器（省略圖示），亦例如是 而配設的一對電極體（藉由電壓施印加而分極 熔接等來連 取出。連接 i位，故較佳 電極板同樣 1 1 b的引線 位變高，故 高電位不易 形成者。 部分的絕緣 。交聯薄膜 以凝膠分率 聯。於交聯 膠分率若爲 側部分係接 接著於封入 22b的取出 但於電雙層 及非水電解 質電容器般 水電解質電 當作對象。 將夾持隔膜 爲正極與負 200908420 極）浸漬在非水電解液中，收納於封入袋體等中而構成。作 爲非水系所用的代表性電解液，例如可舉出碳酸伸丙酯等 。於電極體的電極材料中，使用活性碳或碳纖維，於進行 用於提高比表面積的賦活處理後，混合導電材或交聯材， 成形爲片狀。而且’於此片狀的活性碳接合金屬基材而成 爲電極體’上述引線構件的引線導體係連接於金屬基材。 第3圖係說明上述引線構件2 1 a、2 1 b的槪略及其製法 之一例’第3 (A)圖顯示以絕緣體2 3 a、2 3 b覆蓋引線導體 22a、22b的取出部分之狀態的外觀。此引線構件2 1 a、2 1 b 係可以第3(B)圖〜第3(D)圖所示的方法來製造。 首先’如第3 ( B )圖所示地，例如以絕緣體2 3 a、2 3 b 來夾持被覆厚度0.1mm、寬度5.0mm左右的平形形狀之引 線導體22a、22b的兩面。作爲絕緣體23a、23b的基材， 使用厚度40μπι以下的矩形狀之樹脂薄膜片23。作爲此樹 脂薄膜片2 3，.例如可使用熱塑性聚烯烴樹脂薄膜等，較佳 爲酸改性聚丙烯薄膜或酸改性低密度聚乙烯薄膜，熔點1 2〇 °C〜160°C左右者。接著，如第3(C)圖所示地，樹脂薄膜片 2 3例如可邊藉由加熱器加熱到1 5 〇艺左右，邊推壓於引線 導體22a、22b的表面，經由熱熔黏而接著—體化。 接著’如第3 ( D )圖所示地，對接著於引線導體2 2 a、 2 2 b的樹脂薄膜片2 3之表面，照射電子線或加馬射線等的 電離輻射線E以進行交聯。藉由電離輻射線E的照射，使 樹脂薄膜片23在其厚度全體中被交聯而成爲交聯薄膜25 ’提高對引線導體2h、22b的接著力。茲認爲交聯薄膜 -12- 200908420 2 5係由於輻射線照射時的發熱而產生退火效果，提高接著 力。 電離輻射線E的照射，爲了使樹脂薄膜片23的全體進 行交聯’必須充分的照射量，但若過度照射則樹脂會劣化 ’接著力或凝聚力會降低。藉由以不過度照射的程度使全 體交聯’得到比部分交聯還優良的成品之照射條件範圍變 廣，良率提高。 又’爲了將樹脂薄膜片2 3交聯，必須預先添加交聯助 劑。 作爲交聯助劑，可例示丙烯酸或甲基丙烯酸的酯類、 二乙烯基化合物、烯丙醇與丙烯酸或甲基丙烯酸的酯類等 。具體地，可舉出乙二醇二丙烯酸酯、二乙二醇二丙烯酸 酯、三乙二醇二丙烯酸酯、三羥甲基丙烷三丙烯酸酯、乙 二醇二甲基丙烯酸酯、三羥甲基丙烷三甲基丙烯酸酯等的 丙烯酸或甲基丙烯酸的酯類；二乙烯基苯、二乙烯基吡啶 等的二乙烯基化合物；馬來酸二芳酯、富馬酸二芳酯、氰 尿酸三烯丙酯、異氰尿酸三烯丙酯等的烯丙醇與丙烯酸或 甲基丙烯酸的酯類等。 就交聯助劑的添加量而言，雖然添加量愈多，交聯度 愈高，但由於耐熱老化性變差’故必須選擇最適合値，可 爲2 3重量％以下。 於本實施形態中，使用異氰尿酸三烯丙酯（日本化成（ 股）製的TAIC(註冊商標）等），其添加量爲〇_5_1〇重量％。 又，電離輻射線E的照射條件’若以吸收線量來表示 -13- 200908420 ，則係5 0 - 2 0 0 k G y。以1 0 0 k G y當作中心値進行照射，但亦 可爲±30kGy左右的幅度。 若使用異氰尿酸三烯丙酯於交聯助劑’則在金屬與薄 膜的界面，未反應的異氰尿酸三烯丙酯（油狀）會浮出而有 接著力降低之虞（尤其照射量變少而異氰尿酸三烯丙酯殘 留時）。因此，可使用非油狀的交聯助劑。例如’可舉出日 立化成（股）的 FA-731A(三（2-丙烯醯氧基乙基）異氰尿酸 酯（凝固點45 - 5 5 T：，常溫爲固體）。FA-731 A的添加量係 5-20%左右，較佳爲10-15%。若超過20%則難以混合。若 低於5 %，則與異氰尿酸三烯丙酯相比，凝膠分率變小。 即使常溫爲液狀的交聯助劑，若分子量大者（寡聚物、 預聚物），則對表面的遷移變少。例如，於預聚物中，可例 示聚丙二醇#700丙烯酸酯（日立化成（股）的FA-P270A)。 上述絕緣體2 3 a、2 3 b的交聯薄膜2 5係與以往同樣地 ，良好地接著於引線導體22a、22b的表面而將引線導體密 封。又，可藉由交聯來提高絕緣體的耐熱性，抑制絕緣體 2 3 a、2 3 b的形狀變化，可熱熔黏於封入袋體的最內層薄膜 而良好地密封封閉。 於本發明中，如上述地，由於絕緣體2 3 a、2 3 b係貼合 一層樹脂薄膜（交聯薄膜25)而形成，故與以往貼合熱塑性 樹脂薄膜與交聯的樹脂薄膜者相比，絕緣體的厚度可變小 。一層樹脂薄膜的厚度可成爲4〇μιη以下。因此，貼合有 二片樹脂薄膜的部分之長度爲80μπι以下。但是，於—層 樹脂薄膜的厚度爲20μιη以下時，引線導體的金屬毛邊有 -14- 200908420 突破絕緣體之虞’而且從樹脂薄膜的製造容易性之點來看 ，宜爲20μιη以上。 又，藉由以一層樹脂薄膜（交聯薄膜25)來形成引線構 件的絕緣體，不需要以往之貼合2片樹脂薄膜的步驟。結 果，可減低成本’同時可消除貼合的界面之剝離、微龜裂 所致的可靠性降低之可能性。又，藉由使絕緣體的厚度成 爲40 μιη以下的厚度，可提高引線構件的柔軟性，藉此提 高對電子機器的設置、對電性接連的自由度，而且可實現 蓄電裝置的小型化、薄型化。 雖然已經參照特定的實施態樣來詳細說明本發明，但 明顯地熟習該項技術者在不脫離本發明的精神與範圍內， 可加以各式各樣的變更或修正。 【圖式簡單說明】 第1圖係本發明的非水電解質電池之一例的槪略斜視 圖。 第2圖係本發明的非水電解質電池之引線構件的槪略 圖’其爲第1圖的a-a箭號方向之截面圖。 第3圖係本發明的引線構件之製法的槪略圖。 第4圖係顯示習知技術的圖，其爲第5圖的a - a箭號 方向之截面圖。 第5圖係習知的非水電解質電池之一例的槪略斜視圖 〇 【主要元件符號說明】 6 封入袋 -15- 200908420 7 最 內 層 薄 膜 8 金 屬 箔 層 9 最 外 層 薄 膜 10 多 層 薄 膜 11a 正 極 lib 負 極 12 隔 膜 13 非 水 電 解 質介質 14 密 封 部 分 2 1a、 2 1b 引 線 構 件 22a、 22b 引 線 導 體 23 樹 脂 薄 膜 片 23a ' 23b 絕 緣 體 2 5 交 聯 薄 膜 -16 -In the present invention, a lead wire used in a nonaqueous electrolyte electricity storage device is manufactured, and a nonaqueous electrolyte electricity storage device using the same. [Prior Art] With the miniaturization of electronic equipment, it is required to be battery and lighter as a power source. In addition, high energy density and high energy efficiency are required. As a person who satisfies such requirements, expectations for non-aqueous batteries such as lithium ion batteries are becoming more and more popular. As a non-aqueous electrolyte battery, it is known that a pole, a negative electrode, and an electrolyte solution are housed in a multilayer film-sealed bag containing a metal foil layer, and a lead wire connected to an electrode plate of a positive electrode or a negative electrode is guided to the outside (for example, refer to the patent document)丨). Fig. 4(A), Fig. 4(B) and Fig. 5 are schematic views of the nonaqueous electrolyte battery disclosed in the above patent documents. The extracted portions of the pair of leads I a and 1 b of the non-aqueous electrolyte are formed by thinning the insulators 3 3 and 3 b ' from the sealed portion 14 of the sealed bag 6 to the outside. The sealing portion 14 of the peripheral portion of the sealing bag 6 is adhered to a bag shape by heat fusion. In the sealed bag 6, a nonaqueous electrolyte medium containing a positive electrode, a separator, or the like and an electrolytic lithium compound dissolved in a nonaqueous solvent (for example, an organic solvent) is sealed. Brother 4 (A) shows a section of the a-a arrow direction of Figure 5. In the de-energized battery, the positive electrode 11 a and the negative electrode H b , the separator 丨 2 , the non-water quality 13 and the like are housed in a bag-shaped sealed bag 6 , and a lead (lead member) 连接 a connected to the positive electrode i 1 1 b is connected. 1 b is in a sealed state, and the member is taken into a small-capacity, and the de-solving electricity is taken out from the body which is being formed. The cell is sealed by the covered structure and the hot negative electrode, I (for example, non-hydroelectric electrolysis 1 a) The structure is a member of the structure of 200908420. The sealing bag 6 is formed by bonding a metal foil layer 8 made of a metal such as aluminum to a sandwich between the innermost film 7 and the outermost film 9. A multilayer film 1 having a high sealing property is formed. Further, the innermost film 7 is adhered to each other to form a bag shape in the sealing portion 14 around the two sheets of the multilayer film 1 which is cut into a rectangular shape. Encapsulated bag 6. The lead conductors 2a, 2b connected to the leads of the positive electrode iia and the negative electrode ilb are covered by the insulators 3a, 3b so that the taken-out portion does not generate electricity to the metal foil layer 8 of the multilayer film 1 Short circuit. The insulators 3 a, 3 b are then sealed and sealed to the specified edge of the enclosed bag 6 The insulators 3a, 3b' covering the taken-out portions of the lead conductors 2a, 2b are as shown in Fig. 4(B) of the cross-sectional view of the bb arrow direction in Fig. 4(A). a thermoplastic layer 4 formed of a thermoplastic resin film bonded with a polyolefin resin modified with maleic anhydride-modified low-density polyethylene or maleic anhydride-modified low-density polypropylene, and a low-density crosslinked by Two layers of the crosslinked layer 5 formed of a crosslinked resin film made of a polyolefin resin such as polyethylene. The insulators 3a and 3b are attached to the lead conductors 2a and 2b of the lead, and are The thermoplastic layer 4 of the insulator 3 a ' 3 b is heated and melted to be sealed, and then sandwiched in the take-out port of the sealed bag 6. Then, the sealing portion of the periphery of the multilayer film 10 is sealed by heat sealing. The crosslinked layer 5' of 3b is formed of a material which is not easily melt-deformed at the temperature at the time of heat sealing, and after heat sealing, the lead conductors 2a, 2b of the lead and the metal case layer 8 in the multilayer film The crosslinked layer 5 remains, so there is no need to worry about the lead conductors 2a, 2b and the metal foil layer 8. 200908420 Further, the positive electrode Ua and the negative electrode lib have a structure in which an active material layer is formed on a metal substrate such as a metal foil or a metal mesh called a current collector, and the lead conductors 2a and 2b are connected to each other. An electrode plate of an electrode substrate, which can be spot-welded or ultrasonically fused, etc. Patent Document 1: Japanese Laid-Open Patent Publication No. JP-A No. 2001- 1 020 No. The insulators 3a, 3b provided at the take-out portions of the lead conductors 2a, 2b, as generally illustrated in Fig. 4, are formed by bonding a thermoplastic resin film for forming the thermoplastic layer 4 and for forming a crosslinked layer. A crosslinked resin film of 5 was formed. These resin films are difficult to be extrusion-molded, and a thermoplastic resin film and a crosslinked resin film which are formed by a thickness of about 50 μm are usually bonded to each other, and the total thickness is about 100 μm. If the thickness of the insulator is large, the flexibility of the lead is insufficient, and a gap is formed between the edge of the insulator and the multilayer film, and the sealing of the lead and the sealed bag is insufficient, and moisture enters the sealed bag. Moreover, in the above-mentioned Patent Document 1, it is also disclosed that a conductive resin film is adhered to the lead conductor by heat-adhesive bonding, and the controlled distance from the outside of the thermoplastic resin film is such that the transmission distance is smaller than the film thickness. The electron beam forms a crosslinked layer, but the thickness of the thermoplastic resin film is not explained. An object of the present invention is to provide a lead member used in a nonaqueous electrolyte electricity storage device which is excellent in flexibility and can prevent intrusion of moisture, a method for producing the same, and a nonaqueous electrolyte electricity storage device. Solve the problem of non-water-sealed splicing j. - ί-&. in the IJ thickness conductor in the body of the thin-lead film coating layer, the inventor of the invention, the lead wire is thermally connected to 200908420. In the non-aqueous electrolyte-electrolyte storage device, the lead conductor in which the electrode body and the non-aqueous electrolyte medium are connected to the electrode body is housed in the multi-bag body containing the metal foil layer, and the inner surface of the sealed bag body is attached The insulator is formed by laminating a resin film of 20 μm or more and 40 μm or less in the front layer, and the whole is crosslinked. Further, the method for producing a lead member according to the present invention is a method for producing a lead member for non-hydroelectric use, which is a sealed bag formed of a multilayer film containing a metal foil layer and a non-aqueous electrolyte medium, which is characterized in that it is connected to a conductor. A sealed bag made of a non-aqueous electrolyte electricity storage device-based multilayer film of the present invention is irradiated with ionizing radiation by a thickness of 2 〇μηη or more and 40 μπ) in an insulator formed by sandwiching the lead conductor. The effect of the above-described lead structure is included in the present invention. The effect of the lead structure of the present invention is improved. According to the present invention, the flexibility of the lead member can be improved as compared with the insulator of the lead member. Further, the conductivity of the conductor is good, and the shape change of the insulator can be suppressed by crosslinking. Therefore, the film of the bag body is sealed. Thereby, the self-sealing bag-storage device is improved, and the film formed by the film is characterized in that the insulating system having the lead conductor is provided with the electrode body in which the electrode body is housed in the liquid storage device of the wire-dissolving power storage device. The next layer of resin is bonded and crosslinked. In the case of metal-containing foils and non-aqueous electrolytes. The thickness and the resistance of the insulator to the high insulator allow the good density to be taken out of the portion of the lead structure 200908420, so that the intrusion of moisture can be prevented. Further, in the case of forming a resin film of an insulator, it is not necessary to bond the thermoplastic layer and the crosslinked layer, so that the possibility of deterioration in reliability due to peeling of the bonded interface or microcracking can be eliminated. Moreover, the size and thickness of the power storage device can be reduced. [Embodiment] Embodiments of the present invention An example of an embodiment of the present invention will be described with reference to the drawings. In the nonaqueous electrolyte battery of the present invention, as shown in an example of Fig. 1, the lead conductors 2 2 a and 2 2 b of the pair of lead members 2 1 a and 2 1 b are respectively taken out by the insulator 2 3 a Covered by 2 3 b, the sealed portion 14 of the sealed bag 6 is taken out to the outside in a thin structure, and has a shape similar to that of a conventional one, and is enclosed as a storage electrode body, a non-aqueous electrolyte medium, or the like. The bag-sealing bag 6 is, for example, a bag-like portion in which the peripheral portions of the two films are heat-sealed to form a sealed portion 14 . In the sealed bag 6, a nonaqueous electrolyte medium (electrolyte) containing an electrolyte (e.g., a lithium compound) dissolved in a nonaqueous solvent (e.g., an organic solvent) such as a positive electrode, a negative electrode, or a separator is sealed. The lead members 2 1 a, 2 1 b are taken out from the sealing portion 14 for electrical connection to the outside, and the taken-out portion is insulated by the insulators 23a, 23b and the metal in the multilayer film forming the enclosed bag 6. The foil layer does not make electrical contact. Fig. 2 is a schematic view showing a nonaqueous electrolyte battery of the present invention, showing a part of the sealing portion 14 of the sealing bag 6 shown in Fig. 1, and taking out the leads of the lead members 21a and 21b covered by the insulators 23a and 23b. The conductors 22a and 22b are configured to the outside. In the same manner as the one described in the above-mentioned FIG. 4, 200908420, the encapsulation bag 6 is formed by sandwiching a layer of a metal foil layer 8 made of at least a metal such as aluminum between the innermost film 7 and the outermost film 9. The film 10 is formed to improve the sealing property of the electrolyte contained in the sealed bag 6. Further, the multilayer film 10 sealed in the bag 6 is composed of, for example, a laminated body of 3 to 5 layers, and the innermost layer film 7 is suitable as a liquid leakage preventing portion 14 from leaking out of the sealing portion 14 which does not dissolve the electrolytic solution. A polyolefin resin (for example, maleic anhydride-modified low-density polyethylene or maleic anhydride-modified low-density polypropylene) can be used. The outermost layer film 9 is used to protect the inner metal foil layer 8 from being damaged. Therefore, the ruthenium formed by polyethylene terephthalate (PET) or the like is used as an electrolyte contained in the sealed bag 6, and can be used in carbonic acid. LiC104, LiBF4, L i PF 6 , L i are dissolved in an organic solvent such as propyl ester, ethyl carbonate, diethyl carbonate, dimethyl carbonate, 1,4-dimethoxyethane or tetrahydrofuran. A nonaqueous electrolyte of an electrolyte such as A s F 6 or a lithium ion conductive solid electrolyte or the like. The electrode system is composed of a positive electrode 11a and a negative electrode lib which are opposed to each other by sandwiching the separator 12, and has a structure in which an active material layer is formed on a metal substrate of a metal foil or a metal mesh called a current collector. The positive electrode 11a is formed by forming an active material composed of a reduced oxide powder such as LiCoO 2 and a carbon powder of a conductive agent and a binder of a binder on the electrode conductor of the capsule. The negative electrode lib is composed of an active material formed of a binder of a carbon powder and a binder on an electrode conductor formed of a copper foil. The separator 1 2 ' disposed between the positive electrode 1 1 a and the negative electrode 1 1 b is formed of a polyolefin-based porous film which maintains electrical insulation and maintains ion conductivity. -10-200908420 In the positive electrode 11a and the negative electrode lib, the lead conductors 22a and 22b of the lead member are externally electrically connected to the lead conductors 22a and 22b of the lead member by spot welding or ultrasonic welding, and the lead conductor 22a is electrically positive. A method in which contact with an electrolyte does not occur, and is formed by aluminum or titanium or an alloy thereof. When it is connected to the negative electrode conductor 22b, lithium is precipitated by overcharging, and it is preferable that lithium is not easily corroded by overdischarging. It is difficult to form an alloy with lithium, and the copper or nickel which is dissolved in the same manner as the electrode plate or the lead covered by the alloy is covered. The take-up bodies 2 3 a and 2 3 b of the lead conductors 22a and 22b of the member are bonded to each other with a layer of the crosslinked film 25 to form a 25-series which is crosslinked in the entire thickness direction. The degree of cross-linking is defined as follows. If the gel fraction is 20% or more, it can be said that the film is 25, and the gel fraction is not necessarily 1 〇 〇 %. Condensation 70% ' can be said to be fully cross-linked. The crosslinked film 25 is integrated with the lead conductors 2 2 a and 2 2 b, and the outermost film 7 of the outer portion of the bag 6 is sealed to close the lead conductor 22a and the portion. The above description is based on an example of a nonaqueous electrolyte battery, and the capacitor may have a structure in which an electrode body medium is used in the same manner as the battery. The present invention is also applicable to an electric double layer capacitor such as nonaqueous electrolyte. Therefore, in the present invention, a non-aqueous electrolyte storage device (not shown) including a non-aqueous or non-aqueous electrolyte capacitor is also provided, for example, as a pair of electrode bodies (by voltage application) The electrode is connected and removed, and the i-position is connected. Therefore, the lead position of the preferred electrode plate becomes higher than that of the 1 1 b, so that the high potential is not easily formed. Part of the insulation. The crosslinked film is bonded at a gel fraction. If the gel fraction is tied to the side portion and then taken out in the encapsulation 22b, the water-electrolyte is electrically treated as an electric double layer and a non-aqueous electrolyte capacitor. The separator is a positive electrode and a negative 200908420 electrode is impregnated in the non-aqueous electrolyte. The container is housed in a sealed bag or the like. The representative electrolyte solution used for the non-aqueous system may, for example, be propyl carbonate or the like. In the electrode material of the electrode body, activated carbon or carbon fiber is used, and after the activation treatment for increasing the specific surface area, the conductive material or the crosslinked material is mixed and formed into a sheet shape. Further, the sheet-like activated carbon bonded metal substrate is used as an electrode body. The lead conductor system of the lead member is connected to a metal substrate. Fig. 3 is a view showing the outline of the lead members 2 1 a and 2 1 b and an example of the method of manufacturing the same. Fig. 3 (A) shows the removal of the lead conductors 22a and 22b by the insulators 2 3 a and 2 3 b. The appearance of the state. The lead members 2 1 a and 2 1 b can be manufactured by the methods shown in Figs. 3(B) to 3(D). First, as shown in Fig. 3(B), for example, both sides of the flat conductors 22a and 22b having a flat shape of 0.1 mm in thickness and 5.0 mm in width are sandwiched by insulators 2 3 a and 2 3 b. As the base material of the insulators 23a and 23b, a rectangular resin film sheet 23 having a thickness of 40 μm or less is used. As the resin film sheet 23, for example, a thermoplastic polyolefin resin film or the like can be used, and an acid-modified polypropylene film or an acid-modified low-density polyethylene film is preferable, and the melting point is about 12 ° C to 160 ° C. . Then, as shown in Fig. 3(C), the resin film sheet 2 can be pressed against the surface of the lead conductors 22a and 22b by, for example, heating by a heater to about 15 Å, and is thermally fused. Then - body. Then, as shown in Fig. 3(D), the surface of the resin film sheet 2 3 following the lead conductors 2 2 a and 2 2 b is irradiated with an ionizing radiation E such as an electron beam or a horse beam to perform the intersection. Union. By the irradiation of the ionizing radiation E, the resin film sheet 23 is crosslinked in the entire thickness thereof to form a crosslinked film 25', and the adhesion to the lead conductors 2h and 22b is increased. It is considered that the crosslinked film -12-200908420 2 5 is annealed by heat generated by radiation irradiation, and the adhesion is improved. In the irradiation of the ionizing radiation E, a sufficient amount of irradiation is required to crosslink the entire resin film sheet 23, but if excessively irradiated, the resin is deteriorated. Then, the force or the cohesive force is lowered. By making the whole body cross-linking to the extent that it is not excessively irradiated, it is possible to obtain a wider range of irradiation conditions than the partial cross-linking, and the yield is improved. Further, in order to crosslink the resin film sheet 23, it is necessary to add a crosslinking assistant in advance. Examples of the crosslinking assistant include esters of acrylic acid or methacrylic acid, divinyl compounds, esters of allyl alcohol and acrylic acid or methacrylic acid, and the like. Specific examples thereof include ethylene glycol diacrylate, diethylene glycol diacrylate, triethylene glycol diacrylate, trimethylolpropane triacrylate, ethylene glycol dimethacrylate, and trishydroxyl An ester of acrylic acid or methacrylic acid such as propane trimethacrylate; a divinyl compound such as divinylbenzene or divinylpyridine; diaryl maleate, diaryl fumarate, cyanuric acid An allyl alcohol such as triallyl ester or triallyl isocyanurate and an ester of acrylic acid or methacrylic acid. In the addition amount of the crosslinking auxiliary agent, the higher the amount of addition, the higher the degree of crosslinking, but the heat aging resistance is deteriorated, so it is necessary to select the most suitable hydrazine, and it may be 23% by weight or less. In the present embodiment, triallyl isocyanurate (TAIC (registered trademark) manufactured by Nippon Kasei Co., Ltd.) is used, and the amount thereof is 〇_5_1 〇% by weight. Further, the irradiation condition ' of the ionizing radiation E' is expressed as 50 - 2 0 0 k G y if it is expressed by the amount of absorption line -13 - 200908420. Irradiation is performed with 1 0 0 k G y as the center ,, but it can also be about ±30 kGy. If the use of triallyl isocyanurate in the cross-linking aid' is at the interface between the metal and the film, the unreacted triallyl isocyanurate (oily) will float and the adhesion will decrease (especially When the amount is small and the triallyl isocyanurate remains,). Therefore, a non-oily crosslinking aid can be used. For example, FA-731A (tris(2-propenyloxyethyl) isocyanurate (freezing point 45 - 5 5 T: solid at room temperature) of Hitachi Chemical Co., Ltd. can be cited. FA-731 A The amount of addition is about 5-20%, preferably 10-15%. If it exceeds 20%, it is difficult to mix. When it is less than 5%, the gel fraction is smaller than that of triallyl isocyanurate. Even if the crosslinking agent is a liquid cross-linking aid at normal temperature, the migration to the surface is small if the molecular weight is large (oligomer or prepolymer). For example, in the prepolymer, polypropylene glycol #700 acrylate (for example) can be exemplified. FA-P270A) of Hitachi Chemical Co., Ltd. The crosslinked film 25 of the above-mentioned insulators 2 3 a and 2 3 b is similarly sealed to the surface of the lead conductors 22a and 22b in the same manner as in the related art. The heat resistance of the insulator can be improved by crosslinking, and the shape change of the insulators 2 3 a and 2 3 b can be suppressed, and the innermost layer film sealed in the bag body can be thermally melt-bonded to be hermetically sealed and closed. In the present invention, As described above, since the insulators 2 3 a and 2 3 b are formed by laminating a resin film (crosslinked film 25), they are bonded to the conventional thermoplastics. The thickness of the insulator can be made smaller than that of the crosslinked resin film. The thickness of one layer of the resin film can be 4 μm or less. Therefore, the length of the portion to which the two resin films are bonded is 80 μm or less. When the thickness of the resin film is 20 μm or less, the metal burr of the lead conductor has a thickness of -14 to 200908420 which breaks through the insulator and is preferably 20 μm or more from the viewpoint of easiness of production of the resin film. The formation of the insulator of the lead member by a resin film (crosslinked film 25) eliminates the need for a conventional method of bonding two resin films. As a result, the cost can be reduced, and the peeling and microcracking of the bonded interface can be eliminated. Further, the reliability of the insulator is reduced. Further, by setting the thickness of the insulator to a thickness of 40 μm or less, the flexibility of the lead member can be improved, thereby improving the degree of freedom in the installation of the electronic device and the electrical connection. The power storage device can be miniaturized and thinned. Although the present invention has been described in detail with reference to specific embodiments, it is apparently familiar. A variety of modifications and corrections can be made without departing from the spirit and scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic perspective view showing an example of a nonaqueous electrolyte battery of the present invention. Fig. 2 is a schematic cross-sectional view showing a lead member of a nonaqueous electrolyte battery of the present invention. Fig. 3 is a schematic cross-sectional view showing a method of manufacturing a lead member of the present invention. A diagram showing a conventional technique, which is a cross-sectional view of the a-a arrow direction in Fig. 5. Fig. 5 is a schematic oblique view of an example of a conventional nonaqueous electrolyte battery 〇 [Main component symbol description] 6 Encapsulation bag -15- 200908420 7 Innermost film 8 Metal foil layer 9 Outer film 10 Multilayer film 11a Positive electrode lib Negative electrode 12 Separator 13 Nonaqueous electrolyte medium 14 Sealing part 2 1a, 2 1b Lead member 22a, 22b Lead conductor 23 Resin Film sheet 23a ' 23b insulator 2 5 crosslinked film-16 -

Claims (1)

200908420 十、申請專利範圍： 1 · 一種引線構件，係使用於非水電解質蓄電裝置，該非水 電解質蓄電裝置係在由含金屬箔層的多層薄膜所成的封 入袋體中收納有電極體與非水電解質介質，其特徵爲： 具備連接於該電極體的引線導體、與接著於該引線導體 的在該封入袋體之內面所接著的絕緣體， 該絕緣體係由厚度20μιη以上且40μπι以下的一層樹脂萍 膜夾持該引線導體所貼合而形成，其全體經交聯。 2 . —種引線構件之製法’係非水電解質蓄電裝置中所使用 的引線構件之製造方法’該非水電解質蓄電裝置係在由 含金屬箔層的多層薄膜所成的封入袋體中收納有電極體 與非水電解質介質，其特徵爲： 在連接於該電極體的引線導體上，將由厚度20μηι以上j 4 0 μιη以下的一層樹脂薄膜所成的絕緣體以夾持該引線 導體的方式進行貼合及被覆後’以電離輻射線照射該絕 緣體全體而進行交聯。 3 _—種非水電解質蓄電裝置’係在由含金屬箔層的多層薄 膜所成的封入袋體中收納有電極體與非水電解質介質， 其特徵爲具備申請專利範圍第1項之引線構件。 -17-200908420 X. Patent application scope: 1 . A lead member for use in a nonaqueous electrolyte electricity storage device that houses an electrode body and a non-aqueous electrolyte storage device in a sealed bag body formed of a multilayer film containing a metal foil layer. An aqueous electrolyte medium comprising: a lead conductor connected to the electrode body; and an insulator attached to an inner surface of the sealed bag body following the lead conductor, wherein the insulating system has a thickness of 20 μm or more and 40 μm or less The resin film is formed by laminating the lead conductors, and the whole is crosslinked. 2. A method for producing a lead member', a method for producing a lead member used in a nonaqueous electrolyte electricity storage device, wherein the nonaqueous electrolyte electricity storage device houses an electrode in a sealed bag body formed of a multilayer film containing a metal foil layer The body and the non-aqueous electrolyte medium are characterized in that an insulator made of a resin film having a thickness of 20 μm or more and j 4 0 μm or less is bonded to the lead conductor connected to the electrode body so as to sandwich the lead conductor. After the coating, the entire insulator is irradiated with ionizing radiation to carry out crosslinking. A non-aqueous electrolyte electricity storage device includes an electrode body and a non-aqueous electrolyte medium in a sealed bag body formed of a multilayer film containing a metal foil layer, and is characterized by having the lead member of claim 1 . -17-
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