TWI281280B - Packing structure for lithium ion polymer battery - Google Patents

Packing structure for lithium ion polymer battery Download PDF

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TWI281280B
TWI281280B TW093129032A TW93129032A TWI281280B TW I281280 B TWI281280 B TW I281280B TW 093129032 A TW093129032 A TW 093129032A TW 93129032 A TW93129032 A TW 93129032A TW I281280 B TWI281280 B TW I281280B
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battery
polymer
case
layer polymer
electrode
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TW200522418A (en
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Kyung-Joon Kim
Hyang-Mok Lee
Ki-Chul Hong
Sung-Min Hwang
Sung-Choon Choo
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Lg Chemical 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
    • 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
    • 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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • 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
    • H01M50/172—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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • 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
    • 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
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/574—Devices or arrangements for the interruption of current
    • H01M50/579—Devices or arrangements for the interruption of current in response to shock
    • 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
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • 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
    • H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
    • H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
    • H01M10/0565—Polymeric materials, e.g. gel-type or solid-type
    • 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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  • Battery Mounting, Suspending (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
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Description

1281280 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種鋰離子聚合物電池之封裝結構，卢 指一種適用於一種對鋰離子聚合物電池的仕 二 …安置此電池，電池保護元件固定於電池二= 外力的撞擊。而且，此發明減少電池的整體的大小進而減 小由電池操控的裝置。 ' 【先前技術】 一般，如圖1、圖：所示…經離子聚合物電池卜亦 10視V，袋狀電池”，其包括一具預定大小之内i空間以的主 要殼體2，一遮蓋物3可向主要殼體2旋轉結合，一預定 的電極裝配4置入主要殼體2的内置空間此電極 U 4包括：_陰極板如，—陽極板❹，及—分隔板4c· 護耳5縱向地置於電池裝配4的陰極板^及陽極板#，’ 15亚向外延伸，而每一護耳5各與陰極電極6及陽極電極7 連接。 除此之外，為了熱融合的目的，主要殼體2的内置空 =2a頂端水平向外延伸_預定寬度以。每—護耳與陰極 ^極6及陽極電極7連結的中間部分以一絕緣物質製成之 產耳8包覆。當主要殼體延長部分沘利用熱融和元件與一 遮1物3之邊緣3a融合連結，該絕緣護耳8目的在防止熱 融合元件和電極6.7之間造成短路。 ， 關於上述先前技術之袋狀形電池如下所述： 1281280 2先’一預定數目之電極装備4包含-陰極電極板4a， 一％極電極板4b及一插入兩者之間的分隔板4e，h主 要设體2之内置空間2a，铁後 ^ ^ 入内置空間2a中。，一-―電解液注 5 10 15 每-個電極裝置4的護耳5與中間部分有絕 ^覆的電極Μ連結，此外，每一電極6,7及絕緣護耳8 白部分由主要殼體2及遮蓋物3中突出。 遮蓋物3與主要殼體2緊密接觸，接著，利用孰融和 几件將主要殼體2的延長部2b與遮蓋物3的邊緣3a穷人， 以防止電解液外溢。 W 口 。而如此傳統袋狀鐘離子聚合物電池因為 裝設預定數目的電極裝置，而有延長部份讓它盘 後盍物邊緣熱融合連結，但是如此—來體積大於有效的: 極裝置，亦即主要殼體及遮蓋物的外在包覆一獨立之塑： 盒使得整個電池體積增加。 / 【發明内容】 本發明鑑於上述情況，其主要目的係在提供—種鐘離 子聚合物電池之封裝結構，俾能保護電池防止外力撞 20 時減小整個電池的大小。 里 本發明之另一物件係在提供一種鋰離子聚合物電池 之封裝結構，當電池與充電器或任一需要元件連結，造成 過渡充電或過渡放電時，能及時阻斷電池與充電哭或=一 需要元件連結，進而達到保護電池的安全。 1281280 本發明係有關於一種鐘離子聚合物電池之 :二括一下多層聚合物殼體及-上多層聚合物殼體: ::下夕層聚合物殼體為了能裝置至少一電極及電解液， 其具一預定大小的内建空間·並且 殼:頂端爾狀向外延伸而出;延-長:直二 層聚合物殼體可旋轉地鱼一 ^ v 夕 拉入— αΗ々下多層聚合物殼體延長部 接合在一起，而其餘上多層聚合物殼體與其餘下多… 物设體延長部分密合。—電池保護元件包裹著電池外殼體 ίο 15 避免殼體㈣電池受到外力的㈣而且整體被 ^ 份的下多層聚合物殼體。該_子聚合物電池 可:保護電池受到外力的撞擊同時減小電池整體的：:; 【貫施方式】 本發明之最佳實施例詳述如下圖3至圖8。 圖3是本實施例中應用於一種鐘離子聚合物 結構之電池保護元件及—PCB (保護電路板）的爆炸透= 圖。圖五是關於本發明與電料殼之狀況， 保護元件如何應用於--離子聚合物電池的封裝結： 如圖3，圖5所示，關於兮政 關於4务明之封裝結構包括··一 =體二包括，下多層聚合物殼體9及-上多層聚合物殼 體中下夕層聚合物殼體9為了能裝置至 解液’其具―財大小的内建空間9a，並具有―垂直^ 多層聚合物殼體9之頂端且呈放射狀向外延伸而出的 部：’ -部份的上多層聚合物殼體1〇可旋轉地與一部份下' ，層聚合物殼體延長部9b接合在一起，而其餘上多層聚人 20 1281280 物殼體10與其餘下多層聚合物殼體9延長部分处密合。一* 池保護元件丨3包裹著電池外殼體u避免殼體内的^也^ 外力的撞擊而且此電池保護元件13被固定於一部份的密合 延長部12。 5、㈣地，Μ池保護元件13可為-對應於電池殼_ 邊緣之中空框架14。除此之外，為了能緊密地包覆下多層 聚合物殼體9之表面，亦可為—遮蓋物15以形成殼體^之一 面。（參閱圖3、5、和7) 此外，至少一橫面元件（未顯示）相對於電池殼體U Η)的外表’在一特定間距，形成中空框架⑽一面。 另一實施例，此電池保護元件13亦可是具有一形體為 匚开y狀的電池保護元件16 ,此元件16可以包覆電池殼 體11的上表面及下表面（如圖8)。 再者為了包覆電池殼體11侧面，一垂直的延長部16a 15形成於’，〔，，型電池保護元件16的兩側。 同時，電池保護元件13之材料可為塑膠，金屬，或是 兩者的、、口 口纟他任何易於注入或加工，且可維持適當強 度之材料，亦可用於電池保護元件13。 延長部外前方面對著從電池殼體11突出的電極 20 17，18,此部分與一保護電路基板PCB(protecti〇n circuit b〇ard)19安裝在一起(如圖5,6)，如此一來，PCB19與電池 保護裝置13就可以拆卸式接合（如圖5，圖。此聊提 供一電池保護電政「土# _、+ 电路（未顯不）連接於兩個電極17，18，防止 1281280 此電池過度充電或過度放電，—電極出口部i9a目的在於經 由電池保護線路連接電池電極17，18及外 此一可與一部份的電池保護元件仙；：)一 起，其中PCB19被固定於一射入模具裝置的模具空間（如圖 5 4) ° 依上述，關於本發明一種鋰離子聚合物電池之封裝結 構之步驟將以圖3、圖5、圖6詳述如下·· 首先，-預設數量的電池裝配（未顯示）設置於—形 成電池殼體11 一側的下多層聚合物殼體9内設空間％，而且 10該内設空間9a注入一定的電解液。 接下來，覆蓋-上多層聚合物殼體10於下多層聚合物殼 體9上’以形成電池殼體u另一側。下多層聚合物殼體9延 長部9b與上多層聚合物殼體1〇相關部分利用熱融元件將二 者熱融接合。 15 然後’將電池殼體U上下翻轉再將電池保護元件13固定 於電池殼體η外部。此密合延長部12形成於上多層聚合物 殼體與下多層聚合物殼體9之間的橫向兩側，此密合延長 部12利用對摺及黏附於相關電池保護元件13。 電池包含於電池殼體丨丨，其上 ，、上運結者的陰極17，陽極 18，二者從電池殼體丨丨延長部外前方突出。 PCB19提供—電池保護線路（未顯示）而外接部19a盘位 於^也威心下多層聚合物殼體9前方延長部外平行排列。 最後，PCB19的電池保護線路與每_電極17，18連接，因 此PCB 1 9與相鄰的中央部分連結在一起。 20 1281280 因此’當電池㈣外力撞.擊時，本發明之封裝結構 保護電池的安全，並且可使整個電池的增加體積達到 取广此外’當電池與充電11或任-需要元件連結，造成 電或過渡放電時’本發明之封裝結構亦能及時阻斷 與充電器或任—需要元件連結，進而達到保護電池的 功效。 上述實施例僅係為了方便說明而舉例而已，本發明所 主張之私利⑯®自應以巾請專利範圍所述為準，*非僅限 於上述貫施例。 10 15 20
【圖式簡單說明】 圖1係為白知之一袋狀電池的爆炸透視圖。 圖2係如圖1之一袋狀電池的透視圖。 圖3係本發明之適用於—鋰離子聚合物電池封裝結構的一 電池保4元件與一pCB(pr〇tecti〇n circuit b〇ard)爆炸透視 圖，其提供分開之每一部分相關位置。
囷係本t月之適用於一鋰離子聚合物電池封裝結構的一 。、蒦元件铃 PCB(protection circuit board)爆炸透視 圖，其提供結合的每一部份相關位置。 圖5係本毛明之適用於一鋰離子聚合物電池封裝結構的電 池保濩元件，其如何與一電池外殼外表組設之透視圖。 圖6係本發明之一鐘離子聚合物電池封裝結構如圖5之透視 圖0 10 1281280 圖7係本^明之適用於—鐘離子聚合物電池封裝結構的遮 蓋形狀之電池保護元件透視圖。 5 圖8係本發明之適用於一鋰離子 〔”遮蓋形狀之電池保護件透視 ^^合物電池封f 圖〇 結構的’’ 【主要元件符號說明】 11電池外殼體 12密合延長部 13電池保護元件 14中空框架 15遮蓋物 16匸形保護元件 16a垂直的延長部 17，18電池電極 19PCB 19 a電極出口部
2主要殼體 2a内置空間 2b延長部 3 遮蓋物 3 a遮蓋物之邊緣 4電極裝配 4 a陰極板 4b陽極板 4 c分隔板 5護耳 6陰極電極 7陽極電極 8絕緣護耳 9下夕層聚合物殼體 9a内建空間 9b延長部 10上多層聚合物殼體 11

Claims (1)

  1. Ο 1 0 QQ 置 J TViiy k ；--*-^- -------- -'，，、，'、.，'.·*:，.、..''，卜…-^；^^〜 ^ 93129032^^ 95^l2^1iIEM '：^ 1‘:*—Hv. .. T.' ·*·_. "W :, - ., 十、申請專利範圍： 1. 一種鋰離子聚合物電池用之封裝結構，包括： 一電池殼體，包括一下多層聚合物殼體及一上多層聚 合物殼體，其中，該下多層聚合物殼體為了能裝置至 5 )電極裝配及一電解液，其具一預定大小的内建空
    間，並提供一垂直於該下多層聚合物殼體頂端和放射 狀向外延伸而出的延長部，部份的該上多層聚合物殼 體可旋轉向部份該下多層聚合物殼體延長部，並接合 在起，而其餘該上多層聚合物殼體與其餘該下多層 10 聚合物殼體延長部分密合； 一電池保護元件，係一〔形的電池保護元件，該電池 2護元件包裹著該電池殼體上表面及下表面，避免該 電池殼體内的該電池受到外力的撞擊，而且該電池保 護元件整體被固定於部份的該下多層聚合物殼體；以 15 及 保。蒦 ％ 路板（PCB，protection circuit board)，係包括 電池保護線路以及一電極出口部，其中該電池保護 、本路連接於自該電池殼體向外突出之兩電池電極端， $防止該電池過度充電或過度放電，該電極出口部能 错由該電池保護線路形成該兩電池電極端與外部元件 間之電連接，且該電池保護線路係設置於該電池殼體 兩電池電極端之延長部之前方部分，以面對該電池殼 體之前方部分。 12 1281280 2. 如申請專利範圍第1項所述之鋰離子聚合物電池 用之封裝結構，其中，一垂直延長部分別形成於該電 池殼體侧部，俾使每一垂直延長部能包覆相對應之該 電池殼體侧部。 13
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