TWM482169U - 曲面電池 - Google Patents

曲面電池 Download PDF

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TWM482169U
TWM482169U TW102212788U TW102212788U TWM482169U TW M482169 U TWM482169 U TW M482169U TW 102212788 U TW102212788 U TW 102212788U TW 102212788 U TW102212788 U TW 102212788U TW M482169 U TWM482169 U TW M482169U
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battery
curved
positive
negative
curved battery
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TW102212788U
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Cheng-Heng Ke
Chao-Can Huang
gui-ping Zhang
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Power Source Energy Co Ltd
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Priority to TW102212788U priority Critical patent/TWM482169U/zh
Priority to KR1020140083197A priority patent/KR101630513B1/ko
Priority to US14/322,914 priority patent/US20150010813A1/en
Priority to JP2014003583U priority patent/JP3194599U/ja
Publication of TWM482169U publication Critical patent/TWM482169U/zh

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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
    • H01M10/058—Construction or manufacture
    • H—ELECTRICITY
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    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
    • H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
    • H—ELECTRICITY
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    • 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
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    • H01M10/00—Secondary cells; Manufacture thereof
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    • 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
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    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/139—Processes of manufacture
    • H01M4/1391—Processes of manufacture of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
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    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
    • H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
    • H01M4/587—Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
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    • 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
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    • 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
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
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    • 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
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
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    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
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    • 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
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/538—Connection of several leads or tabs of wound or folded electrode stacks
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    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/54—Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges
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    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
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    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
    • H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
    • H01M50/627—Filling ports
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    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
    • 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
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    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
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Description

曲面電池
本創作係關於一種曲面電池結構，尤指一種電池本體在整體上是具有一曲率的曲面電池。
現有的鋰電池一般均為菱形或圓柱形，其表面的角度約略為180度(或0度)，而為了牽就這類電池的型態，許多日常生活中所常見的3C產品於其結構內，即配置了可容置菱形或圓柱形電池的空間；此類電池所帶來的問題是設計者為了既有的電池體積以及尺寸，都在在的無法對現有的產品作出重大的改變，目前市售的另種鋰電池其表面的角度可小於90度，此類的電池則可用於諸如是手錶的產品中。而隨著電子產品的日漸縮小尺寸，在電子產品中可用以置放電池的空間是愈來愈小，甚至，因為結構設計上的考量，其可使用的空間亦可能出現不規則的現象。
由於電子產品的尺寸愈形縮小，以致於現行固有的電池均需要作出大幅度的改良以適應各電子產品中電池室縮小後的尺寸；然如前所述，各種現行的電池均為固定形狀之電池，且各電池亦均無法適切地置入不規則形狀(如弧形)的電池室，所以在電子產品的發展上均因為電池產品的限制而無法大步也作出令人驚豔的創舉。
為了能解決目前市面現有電池形狀對電子產品所設的限 制，在公開的資料中可見及一種呈不規則形狀的彎曲電池，此種電池由其所公開的資料內容可知其在呈長條狀的電池一端是呈現彎曲的形狀，而在另一實施例中則可在電池的兩端呈現彎曲的形狀，藉由這種彎曲的形狀，電池則可置入於不規則形狀的電池室內。
由其所公開的資料可知，此類電池在一端或是兩端的端點處是相對於中段而呈現彎曲的形狀，由此可知，其在結構上而言，整體的電池在曲率上是呈現不規則的設計，也就是說，其在一端或兩端所具有的曲率在相對於電池本體的中段處是不相同的，這類的彎曲電池確實的可對日益縮小且呈不規則形狀的電子產品提供更多的設計空間。
本創作為了能促進業上長足的進步以及跟上時代不斷創新的步調，遂提出一種不同於現有技術的曲面電池以解決上述之缺失。
本創作之目的即在提供一種曲面電池，尤其地是有關於一種曲面電池的結構。
為達上述之目的，本創作之技術手段在於：所提供的曲面電池製法主要是包括了下列的步驟：電極片之電鍍、捲繞、第一次封膜、加熱、注入電解液、充電、抽真空、二次封膜、整形；其中，值得注意的是，於捲繞步驟中，是沿著電極片的長邊來加以捲繞，於第一次封膜時，則是將正、負極一側以及和正、負極相鄰的一側先行予以密封；在經過了第一封膜後，則利用加熱的方式將所有可能存在於已三側邊形成密封的囊袋內的水汽予以去除，之後，則在囊袋內注 入電解液，並對含有電解液的囊袋予以暫時地封邊；之後，則對整體的電解液實施充電步驟；再者則是將已充好電的半成品一邊的封邊予以去除，以實施抽真空的步驟，然後，則是再行的將該側邊予以密封，密封完後的半成品則再行經過整形以及彎折的步驟後，再經熱壓則完成整個的製作步驟。
本創作的另一目的是該加熱的步驟中，加熱的溫度是攝氏75度，時間則為至少12小時。
本創作的再一目的是該電解液為LiPF6 。
本創作的另一目的是於充電時，其電流強度為3.6mA，而充電時間為六小時。
本創作的另一目的即是在於提供一種曲面電池，其由整體觀之，其在外部表面上是形成為一具有均勻曲率的曲面。
本創作的再一目的即是於一實施例中，該曲面電池的厚度為2.2mm。
本創作的再一目的即是於一實施例中，該曲面電池的電極片是沿著平行於電池本體的長邊方向而延伸。
1‧‧‧彎曲電池
第1圖為本創作之曲面電池製作流程圖；第2圖為本創作曲面電池之結構示意圖；以及第3圖為本創作曲面電池捲繞時之示意圖。
為便於 貴審查委員能對本創作之技術手段及運作過程有 更進一步之認識與瞭解，茲舉實施例配合圖式，詳細說明如下。
請參閱第1圖所示，本創作所提供之曲面電池製作方法係包括了下列各步驟：電極片之電鍍：本創作之曲面電池於製作時，首先即是在一導電材料上的一部選為正極，並於此一電極上塗佈一層正極塗料(鈷酸鋰)，而在另一部則選為負極，並在此一電極上塗佈一層負極塗料(石墨)，爾後，則利用一隔膜紙將整個導電材料予以包覆起來，以防止正負極接觸造成短路。在一具體實施例中，位於該正極片的最外端可設有一垂直於正極以及/或負極方向實施點焊的正極耳，而在該負極片的最外端則可設有一垂直於正極以及/或負極方向實施點焊的負極耳；正、負極耳的設置則是方便爾後一旦成品完成後可方便和電子元件作電性接觸。
電極片之捲繞：於此步驟中即是將已捲繞好隔膜紙之電極片沿著其長邊捲繞(如第3圖所示)，使得完成捲繞後，位於該電極片最外端之正極耳以及負極耳位於捲繞體的最外一層。
第一次封膜：於捲繞後的電極片，基本上是具有三個呈開口的側邊，其分別是具有正、負極耳的一側，以及和正、負極耳相鄰的二側邊，此時則可使用適切的機具，例如是封邊機來對具正、負極耳的一側以及和正、負極耳相鄰的一側邊予以封邊；於封邊時，其封邊的溫度可為攝氏210~230度，且封邊的時間為2.5至3.5秒。
加熱：該加熱的步驟中，加熱的溫度是攝氏75度，時間則為11~13小時，較佳者為12小時，其目的在於將已形成三邊封邊的囊袋內所可能存在的水汽利用烘烤的過程予以去除。
注液：在已呈乾燥的囊袋內，注入成份為LiPF6的電解液；注入時，其四週環境的溫度較佳為攝氏25±5度，並相對濕度為小於2%。於此步驟後，較佳者係對仍處於開放狀態的側邊予以暫時的封邊，以將囊袋形成為一完全密封的個體。
充電：於此步驟中，則利用適切的機具對內含於囊袋中的電解液充電，其充電的參數為電流強度是3.6毫安培(rnA)，並充電至少6小時。
抽真空：於實施抽真空前，係先行將已形成為密封狀態的囊袋之非正、負極耳的一側予以再次的形成開放狀態，並利用負壓的方式將本體內多餘的氣體予以去除，其抽氣的時間為5秒，並達到真空度大於等於90%的程度。
第二次封膜：待抽真空的步驟完成後，則將前述已現開口狀態的一側利用封邊機再次的予以密封，而將囊袋的內部空間形成為一至少為90%的真空狀態(90%)。
整形與彎折：於此步驟中，將已形成至少為90%的真空狀態的囊袋放入彎折機具，於此彎折機具中是具有複數個可順遂推動囊袋往單一方向運行，且轉速為20~30轉/分鐘的滾輪，而當囊袋經過滾 輪時，各滾輪則可將呈現長條狀的囊袋予以彎折。使得整體形成為一弧形，具有一均勻的曲率
基於上述的說明，並請參照本創作所提供圖式第2圖可知，本創作在結構上是呈現一長條狀，並整體具有一均勻的曲率，此一特點是在公開的資料中所未見及，同時，在公開的資料中亦未見到任何的教示謂電池本體係可呈現為一具有均勻曲率的外觀；再者，在現行的技術中亦未有不論是明示或是暗示的建議提供了大眾，以供大眾設計出本創作的結構，同時，因為本創作所提供之彎曲電池1係為業界之先趨，故而亦未見及有任何的動機揭露於任何公開的資料中予社會大眾來作為是研發出相同或是類似於本創作的產品。
上列詳細說明係針對本創作之可行實施例之具體說明，惟該實施例並非用以限制本創作之專利範圍，凡未脫離本創作技藝精神所為之等效實施或變更，均應包含於本案之專利範圍中。
1‧‧‧彎曲電池

Claims (3)

  1. 一種彎曲電池，其係具有呈長條狀之本體，其特徵在於：該本體整體係具有一均勻的曲率。
  2. 如申請專利範圍第1項所述之彎曲電池，其是具有一正極以及一負極，其中，該正極以及負極是沿著平行於本體的長邊方向而延伸。
  3. 如申請專利範圍第1或2項所述之彎曲電池，其中，該本體係具有沿著本體軸向而延伸的正負極耳。
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