TW527741B - Cover for secondary battery - Google Patents

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Publication number
TW527741B
TW527741B TW090128215A TW90128215A TW527741B TW 527741 B TW527741 B TW 527741B TW 090128215 A TW090128215 A TW 090128215A TW 90128215 A TW90128215 A TW 90128215A TW 527741 B TW527741 B TW 527741B
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sealing member
cover
rivet
plate
patent application
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TW090128215A
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English (en)
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Toshiharu Hayashi
Masaaki Fukumoto
Tomohiro Kato
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Wako Denshi Kk
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10Primary casings; Jackets or wrappings
    • H01M50/147Lids or covers
    • H01M50/166Lids or covers characterised by the methods of assembling casings with lids
    • H01M50/169Lids or covers characterised by the methods of assembling casings with lids by welding, brazing or soldering
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/052Li-accumulators
    • H01M10/0525Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10Primary casings; Jackets or wrappings
    • H01M50/102Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/103Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10Primary casings; Jackets or wrappings
    • H01M50/172Arrangements of electric connectors penetrating the casing
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10Primary casings; Jackets or wrappings
    • H01M50/172Arrangements of electric connectors penetrating the casing
    • H01M50/174Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
    • H01M50/176Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for prismatic or rectangular cells
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10Primary casings; Jackets or wrappings
    • H01M50/183Sealing members
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10Primary casings; Jackets or wrappings
    • H01M50/183Sealing members
    • H01M50/184Sealing members characterised by their shape or structure
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10Primary casings; Jackets or wrappings
    • H01M50/183Sealing members
    • H01M50/186Sealing members characterised by the disposition of the sealing members
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10Primary casings; Jackets or wrappings
    • H01M50/183Sealing members
    • H01M50/19Sealing members characterised by the material
    • H01M50/193Organic material
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • H01M50/543Terminals
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • H01M50/543Terminals
    • H01M50/552Terminals characterised by their shape
    • H01M50/553Terminals adapted for prismatic, pouch or rectangular cells
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Description

527741 五、發明說明(1) [發明所屬之技術領域] 本發明係有關二次電池,尤其有關能以低成本製造之改 良形態者。 [習知之技術] 行動電話之使用極為盛行,而鋰離子電池正被作為該行 動電話之電源而普遍使用,以代替傳統之鎳鎘電池或鎳氫 電池。 鋰離子電池之使用電壓較前述鎳锅電池等為高,具有能 量大,对久性長,即使補充充電也不易劣化之電特性,而 且為輕量,因此具備前述行動電話、錄影機等輕薄短小機 器之有利使用條件。 但是,鋰離子電池雖有上述之優點,但也有價格昂貴之 缺點。 [本發明欲解決之課題] 本發明有鑑於此,目的在獲得較習知電池低廉之鋰離子 電池。 [解決課題之手段] 為解決上述課題,本發明係以下述技術性之進步為背 景,著眼於鋰離子電池之蓋結構,在該蓋形態上加以改 良,使其得以低廉製造,並推廣到使鋰離子電池整體的成 本減低。首先,參照圖2和圖3說明習知的一般性角型鋰離 子電池的蓋結構。 圖2所示角型鋰離子電池之蓋1 0,其本體係由鋁或鍍鎳 鐵板所形成,配合其所覆蓋之匣體上緣之形狀而形成長方
C:\2D-CODE\91-01\90128215.ptd 第5頁 527741 五、發明說明(2) ' 一 形。本體1之中央,有裝設導線用之矩形端子構件2,與較 該端子構件2大一圈的矩形絕緣構件3 —起,荖示 之密,以賴結合。再者,圖中,二丁 不之薄肉部,係於發生異常而匣體内之内壓升高時,擔任 安全閥之功能者,元件編號7所示之孔,係電解液之注°入 口。其次,將參照圖3分解立體圖說明此種形態之蓋丨〇的 上述各構件之組合形態。 如圖所示,本體i之中央設有孔la,藉以裝設前述端子 構件2和絕緣構件3,而該端子構件2和絕緣構件3本身之中 心也分別設有穿通孔2a、3a,藉以裝設於本體1。 將該端子構件2和絕緣構件3裝設於本體1之""前述密封構 件4係一圓筒,其一端具有外向法蘭4&,該圓筒部^之外 控係相等於可嵌入前述本體i中央裝設孔la之大小。該密 封構件4係由聚丙烯樹脂之射出成型法所形成者。上=& 恶之各構件,係以下列步驟裝設於本體1者。 , ^先,如圖3所示’將端子構件2和絕緣構件3,使絕緣 構件3在了,對準其穿通?L2a、3a之中心而重疊,再將該 重登構件之穿通孔2a、3a之中心對準前述本體i中央裝設 孑U a之中心,再予以裝載。 其次,將前述密封構件4之圓筒部扑,從本體】之背面插 入Ϊ三個構件之穿通孔1㈠^…再將鉚如從本則 之背面插入該密封構件4之圓筒中空部,鎖緊结合。i 態即如圖2所示。 ^ 依上述方法’將導線(未圖示)焊接於本體i上之端子構
\\312\2d-code\91-01\90128215.ptd 五、發明說明(3) 件2表面’而在傳統方法中, 子構件2相對於太辦彳v q 又传良好之焊 ^ 本體1必須有如圖示* I 心斗接,其端 、:而,由於其焊接技術之進步,产之佔有率面積。 術小,其必要之面積變 =對象面積較習知 大小即可。 述鉚釘5鎖緊後之端面 因此,將該鉚釘5視為端子,將 I廢止前述之端子構件2以減少元件^接於該部分,即 盍1 0之低成本製造。 里’從而得以實現 據此,本發明使鉚釘5兼作端子構件 減少一個而只要四個構件即可。 用。如此,即可 又,若在前述密封構件4使用絕 之用,則構件件數將更減少 材:兼作絕緣構件3 施形態之圖1(b)、(c))。 —们構件即可(參照實 再者’本發明中,係將前述密封構 法蘭部4a而另外形成者(夂护杏 y处 刀成0肉部4b和 以下將說明其優點。 MU)、(b))。 首先,傳統密封構件4,如前述,係使用廉 成型法形成,但若為使電池小型化:薄:化)而 將E肢減溥,則匣體和蓋10焊接時的熱量太高,耐熱性不 佳的聚丙烯不能承受此熱度,也因此有不能實現小型化的 問題。代替此種聚丙烯樹脂,可考慮使用富於耐熱性 系樹脂。 但是’氟系樹脂不但材料昂貴,也不易射出成型,為了 射出成型必須使用特殊的坡度(g r a d e ),有其成本高於其 \\312\2d-code\91-01\90128215.ptd 第7頁 527741 五、發明說明(4) 他材料的問題。 因此,本發明中,將密封構件4分成形狀簡單之圓筒部 4 b和法蘭部4 a,另外成形。 如此處理之後,相應於上述簡單形狀之圓筒部4b和法蘭 部4a的圓盤,可分別以低廉之片材起模及射出成型法製 作,雖然材料費較貴,但可使用富於耐熱性之氟系樹^, 最後仍可獲得較傳統方法低廉之構件。 曰 又,法蘭部4a在整個密封構件4中,並不是需要 、,烈ΐ封性的部位,因絕緣性為主要之要求部位即 使文、〒接時發熱的影響而變形,其問題並不太大, :匕-部分不使用高價的氟系樹脂,而使 : 即更可降低成本。 万式成型, 再者,上述說明中係以鋰離子電池,^ ^ ^ 不…離子電池,只要有關導線 二=明: 等其他」開頭所提及之鎳錦電池、鎳氣電池 [發明之實施形態] 以下將參照圖示顯示本發明之實施开彡能# 同之部分賦以相同之元件::;月形悲,,習知例相 之圖*,連接笔之m 說明。再者’以下 實施形線略去而未顯示。 r ΐϋη之本實施形*態’係在保留習知端子構件2和 巴’ 形悲下之蓋1 0上’另外形成密封構件4之圓筒部
527741
讣和法蘭部4a者。 斗寺另丨i需恭^ % ^ 性,即^焊I 1性之圓筒部仂,係使用高價但富於耐熱 裁切而成。日守的發熱也不易變形的氟系樹脂,以其軟管 方面,田^以絕緣性為主而容許稍有變形的法蘭部“ 樹脂,將: ^ k W述U樹脂稍差但低廉之聚丙烯 圓筒:L構件起模形成甜甜圈狀的圓盤。 而使用既成軟ΐ;:4二’均不必使用成型用的複雜鑄模, 圓筒部;,故其 體成型者為低廉。 ^Y/;^4!-1;- «- 廢止端子構件2和絕緣構件3 緣構件3之用,藉以 密封構件4三個來構而使用本體1、實⑼釘5和 而在密封構件(4 )方面,盥前杳 部4b和法蘭部4a係另外形成、,形態1時一樣’圓筒 成圓筒部4b,而使用聚丙:丄裁刀氟系樹脂之軟管以形 部4a。 起模的片狀構件作為法蘭 此種實施形態,由於沒有妒 費、製作成本均可更為低廉。 件2和絶緣構件3,構件 實施形態3 圖1(c)所示之本實施形態,係 a 封構件4另外分成圓筒部4b和1上述貫施形態2中將密 和法闌部h者換成一體之形 第9頁 C: \2D-C0DE\91OI\90128215.ptd 527741
C:\2D-CDDE\91-01\90128215.ptd 第11頁 527741 · 圖式簡單說明 圖1為分別以(a)、( b)、( c)顯示實施形態1、2、3之蓋 的剖面圖。 圖2為以(a)顯示習知蓋之俯視圖,以(b)顯示(a)之剖面 圖。 圖3為顯示習知蓋之分解立體圖。
C:\2D-CODE\91-01\90128215.ptd 第12頁

Claims (1)

  1. 、申凊專利範圍 】· 種—次電池之罢, 5 :L,邊,使端子構件和絕:在於,在設於板狀本體上 I豐佈置,前述孔之一斤扞件為絕緣構件朝著本體方 山件,該密封構件上再插2入具有朝外法蘭之圓筒密封 鸲子構件和絕緣構 2釘,將該鉚釘鎖緊, 密封構件係與體而f者; 圓同部分開而另外形成^。、述法闌部之開孔平板及其餘 。2 .如申清專利範圍第1 一 圓筒部係由I系樹脂所形成者―。次電池之蓋,其中,上述 3 ·種二次電池之蓋,其特料i Μ =孔周邊佈置絕緣構件,^义二在於,在設於板狀本體上 蘭之圓筒密封構件,該宓孔之一端插入具有朝外法 鎖緊,使前述絕緣構件^密 t再插入鉚釘,將該鉚釘 鉚釘之端面裝設導線而成^。、 接合於本體,而於前述 4 · 種一次電池之蓋,苴特符/ 的孔中’插入一端具有朝;法二在:’在設於板狀本體上 筒密封構件,該密封構件上由絕緣性材料形成之圓 ,前述密封構件接合於本體,而 線而成者。 則迷鉚釘之端面裝設導 5 ^申請專利範圍第…項之二 述您封構件係由氟系樹脂所形成者。 之|其中,上 6 ·如申請專利範圍第3或4項 - 述密封構件係與對應於:述=蓋,其中,上 部分開而另外形成者。 之開孔平板及其餘圓筒 第13頁 \\312\2d-code\9l-0l\90l28215.ptd 527741
    C:\2D-CODE\91-01\90128215.ptd 第14頁
TW090128215A 2000-11-14 2001-11-14 Cover for secondary battery TW527741B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000346407A JP2002151022A (ja) 2000-11-14 2000-11-14 二次電池の蓋

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US (1) US6835494B2 (zh)
JP (1) JP2002151022A (zh)
KR (1) KR20020037687A (zh)
CN (1) CN1224117C (zh)
TW (1) TW527741B (zh)

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JP2003151528A (ja) * 2001-11-14 2003-05-23 Nec Tokin Tochigi Ltd 密閉型電池
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US7871725B2 (en) * 2002-04-15 2011-01-18 Samsung Sdi Co., Ltd. Secondary battery with enhanced ability to prevent leakage
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JP4715114B2 (ja) * 2004-06-17 2011-07-06 トヨタ自動車株式会社 電池ケース蓋用パッキン、電池ケース蓋の製造方法、電池の製造方法
CN1655389A (zh) * 2005-03-04 2005-08-17 北京中信国安盟固利新材料技术研究院有限公司 大容量金属外壳锂离子二次电池
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US6835494B2 (en) 2004-12-28
US20020058184A1 (en) 2002-05-16

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