TW200807792A - Electrode plate for battery cell and process of preparing the same - Google Patents

Electrode plate for battery cell and process of preparing the same Download PDF

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Publication number
TW200807792A
TW200807792A TW096122199A TW96122199A TW200807792A TW 200807792 A TW200807792 A TW 200807792A TW 096122199 A TW096122199 A TW 096122199A TW 96122199 A TW96122199 A TW 96122199A TW 200807792 A TW200807792 A TW 200807792A
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TW
Taiwan
Prior art keywords
electrode
current collector
battery
joint
cathode
Prior art date
Application number
TW096122199A
Other languages
Chinese (zh)
Other versions
TWI344234B (en
Inventor
Seungjae You
Min Su Kim
Original Assignee
Lg Chemical Ltd
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Publication date
Application filed by Lg Chemical Ltd filed Critical Lg Chemical Ltd
Publication of TW200807792A publication Critical patent/TW200807792A/en
Application granted granted Critical
Publication of TWI344234B publication Critical patent/TWI344234B/en

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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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/547—Terminals characterised by the disposition of the terminals on the cells
    • H01M50/548—Terminals characterised by the disposition of the terminals on the cells on opposite sides 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
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/536—Electrode connections inside a battery casing characterised by the method of fixing the leads to the electrodes, e.g. by welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/10—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating making use of vibrations, e.g. ultrasonic welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20—Bonding
    • B23K26/21—Bonding by welding
    • B23K26/24—Seam welding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/04—Processes of manufacture in general
    • H01M4/0402—Methods of deposition of the material
    • H01M4/0404—Methods of deposition of the material by coating on electrode collectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/139—Processes of manufacture
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/66—Selection of materials
    • H01M4/661—Metal or alloys, e.g. alloy coatings
    • 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
    • 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
    • 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
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
    • H01M50/51—Connection only in series
    • 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
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/514—Methods for interconnecting adjacent batteries or cells
    • H01M50/516—Methods for interconnecting adjacent batteries or cells by welding, soldering or brazing
    • 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
    • H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
    • 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
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/534—Electrode connections inside a battery casing characterised by the material of the leads or tabs
    • 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
    • H01M50/557—Plate-shaped terminals
    • 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
    • H01M50/562—Terminals characterised by the 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/564—Terminals characterised by their manufacturing process
    • H01M50/566—Terminals characterised by their manufacturing process by welding, soldering or brazing
    • 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
    • H01M50/571—Methods or arrangements for affording protection against corrosion; Selection of materials therefor
    • 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
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/36—Electric or electronic devices
    • B23K2101/38—Conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • 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
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. 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)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Inorganic Chemistry (AREA)
  • Plasma & Fusion (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Battery Mounting, Suspending (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Cell Electrode Carriers And Collectors (AREA)
  • Secondary Cells (AREA)

Abstract

Disclosed herein is an electrode plate device comprising a pair of electrode plates constructed in a structure in which the electrode plates include current collectors made of different materials (a, b), electrode taps are formed at the respective current collectors, and an electrode active material is applied to at least one major surface of each current collector excluding the electrode taps, wherein a metal piece made of the material (b) is welded to the end of the current collector made of the material (a) to form the electrode tap, and the electrode active material is applied to the current collector after the metal piece is welded to the current collector. A method of manufacturing the same is also disclosed. The electrode plate according to the present invention has the effect of improving the weldability between the cathode terminal and the anode terminal when two battery cells, which include the electrode plate, are connected in series with each other to manufacture a battery module. In addition, the electrode plate according to the present invention has the effect of improving the corrosion resistance in an atmosphere containing salt.

Description

200807792 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種電池單元用電極板，尤有關於一種電 極板裝置，包括：一對電極板所構成的一結構，其中該些 5電極板包括由不同材料（a，b)所製成的電流集電器、各自形 成於電流集電器之電極接頭以及一塗覆至每一電流集電器 中除了電極接頭外之至少一主要表面，其中一由第二材料 (b)製成的金屬片焊接至由第一材料（a)製成的電流集電器 之末碥以形成該電極接頭，並且該電極活性材料塗覆至在 1〇該金屬片焊接至該電流集電器後之該電流集電器。 【先前技術】 近年來，可充電及放電之二次電池已經被廣泛應用為 =線行動叙置的能量來源。在應用為電動車輛（ev)及混合 15電力車輛（HEV)的能量來源的方面上，二次電池也吸引了不 乂的/主思。廷些車輛係被開發用來克服各種問題，如目前 使用=化燃料之汽油及柴油車輛所造成之空氣污染。 时每小尺寸行動裝置皆使用一個或複數個小尺寸電池 =元。另一方面，中尺寸或大尺寸裝置，如車輛，則使用 八有複數個互相連接之電池單元的電池模組，以提供中 尺寸或大尺寸裝置所需之高輸出及大容量。 ▲如果可能的g，中尺寸或大尺寸電池模組較佳地具有 車^小的尺寸及重量。為此，可高密度堆疊並具有較小之重 量/體積比的稜柱電池或袋狀電池常被應用為中尺寸或大 6 200807792 尺寸電池模組的電池。尤其’由於袋狀電池之重量小’並 製造成本也較低，所以使用紹薄片做為一保護構件的㈣ 電池目前受到較多的注意。 袋狀電池包括由複數個陰極與陽極依序堆疊且隔離膜 分別配置於陰極與陽極之間的結構所構成的電極組件。凸 出於陰極與陽極的複數個陰極接頭與陽極接頭係經由谭接 而與陰極導線及陽極導線結合，以形成外部輸㈣輸入 端。在袋狀電池中，陰極一般係由_製成，而陽極-般 係由銅所製成。尤其，構成每一陰極的陰極電流集電器、 ㈣接頭及陰極導線係皆由銘所製成，而構成每一陽極的 陽極電流集電^、陽極接頭及陽極導線係皆由銅所製成。 因此’雖然是經由焊接而將構成陰極與陽極的組成件彼此 耦合，其仍然不會有大量的熱產生。 另一方面，在中尺寸或大尺寸的電池模組中，電池單 15 元係以串聯的方式互相連接以提供高的輸出。袋狀電池係 經由銘製成的陰極導線與銅製成的陽極導線之間進行的焊 接、、、口 口而互相連接。然而，當兩個由不同材料製成的電極 導線以焊接方式互相結合時，係會產生大量的熱。此所產 生的熱係會傳送至塗覆在陰極電流集電器的電極活性材 料’此結果會使電極活性材料衰退。當電池單元暴露在含 有腐敍性材料（例如鹽或其類似物）的環境下時，因為紹具有 當南的腐钱性的關係，也有可能會在電池單元之間連接區 域内產生腐蝕。 20 200807792 為了解決上述問題，日本專利申請公開案號第 2004_247244號揭露-種使用由銅與㈣製成的陰極導線 以及由鋼所製成的陽極導線以構成一電池單元的技術。尤 其，銅係接合於陰極導線的紹端，並且此接合區域係利用 5電氣絕緣構件而纏繞著，因而使得在陰極導線與陽極導線 之間電性連接的區域是由相同的材料所製成，藉此，此種 焊接製程很容易進行並且;^會產生熱。然而，陰極導線中， 銅與銘部之間的接合區域並不是藉由谭接而形成，而是利 用塗覆樹脂的方式而使銅與紹部互相接觸，於此結果中， 10在接合區域中的銅與紹之間的結合力很小，此外，在電池 單元電性導通的期間，係會增加其連接阻力。再者，銅/銘 接合區域係位於電極導線上，且因此，此銅/銘接合區域係 會有鄰接至電池外殼的密封區域的可能性。以此理由，其 需要增加電池外殼的密封部之尺寸。另一方面，電極㈣ 與密封部之間所定義的空隙會增加，即此空隙係在電極接 頭與電極導線互相接合的區域。以此結果，電池的安全性 將會降低，且電池的尺寸增加。 同樣地日本專利申請公開案號第2005-339931號揭露 一種以鋁塗佈至凸出於卷—恭岫留-从, 於母包池早兀外側的陽極導線凸出 部的技術，而此電池單元包含一由銘製成的陰極導線附加 至由銅製成的陽極導線，並且在陰極導線與陽極導線内形 成通孔，藉此完成電池單元之間的結合，而不需要焊接， 且因此可避免電池單元之間的結合區域之腐蝕。 然而，上述的技術需要一道外加的製程，例如電鍍， 200807792 以塗佈鋁至陽極導線。 得電池單元的製造成本 如此完成此製造製程時 隨之增加。 也因此使 囚此 ^ %、品—種技術以增加在電池單元互相串聯的連 八^ $極導線與陽極導線之間的焊接能力，並且辦加在 含有鹽氣體環境下的耐腐餘性。 “口在 【發明内容】 問題，且亦同時解決其他 因此，本發明係解決上述的 技術問題。 鄰電、明的：目的係提供一種電極板，可增進在兩個相 線的焊=::、:τ連接時，陰極_^ t佼此刀，以製造一電池模組。 -的=7另一目的係提供一種電極板，可增進在含有 皿的虱體裱i兄下之耐腐蝕性。 15 本發明的再一目的係提供一種電極板之製造方法，一 種W由電極板的製造方法製造而得此電極板之電池單元 1 一種中尺寸或大尺寸電池模組’其包含複數個作為單 位電池之電池單元。 根據本發明的—目的，上述或其他目的可由—電極板裝 20 f的提供而完成，此電極板裝置包括一對電極板所構成的 ^構，其中電極板包括—第―材料及—第：材料⑽所 製成的多個電流集電器、多個各自形成於電流集電器之電 極接頭以及一塗覆至每一電流集電器中除了電極接頭外之 至少-主要表面的電極活性材料’其中一由第二材料⑻製 200807792 成的金屬片，係焊接至击第一材料（樣成的電流集㈣之 f端以形成電極接頭，並且在金屬月谭接至電流集電哭 後；，t極活性材料係被塗覆至電流集電赛彳。：： 5 15 根據本發明的電極板中，陰極電流‘電:器與陽極電流隹 電器係由不同材料㈣所製成，而凸出於陰極電流集電；： 與％極電流集電器的電極接頭係由相同之第二材料⑼ 成。 又 因此，當一電池單元係由使用本發明的電極板所製造 =制凸出於電池早％的陰極接頭與陽極接頭係由相同材料 _ 1成且因此可使電極導線接合至陰極接頭及陽極接 =而此$極導線係為與陰極接頭與陽極接頭相同的材料 斤製成。因此’當複數個電池單元互相電性連接時，由相 ^材料所製成的電極導線係互相接合，藉此，可因此增加 接頭與電極導線之間以及各電極導線之間的焊接能 力。同樣地，在不同材料之間的接合區域係位於電極接頭 ^且因此’電池單元的尺寸不會因此增加，且在具有盥 ί統電池單元相同尺寸的電池外殼的情形下，其密封部的 力也不會下降。此外，當第一材料⑷為一具有相當 南耐腐韻性的材料時，而此第一材料⑷係位於電池單元内 側’可增進在含鹽氣體環境下料腐蚀性。 較佳地’將金屬片焊接至電流集電器的方式係利用雷射 ^合=接或電阻焊接。一般而言’雷射接合焊接或電阻焊 ^ 一尚的結合力’然而’在接合區域内卻會產生大 里的熱。因此’當進行雷射接合焊接或電阻焊接至凸出於 20 200807792 電流集電器的電極接頭（其塗覆有電極活性材料）時，焊接的 熱會傳迗至電流集電器，此結果導致電極活性材料衰退 也因此造成結合力隨之下降。因此，焊接製程通常係使用 超音波焊接方法，雖然結合力低，但是焊接的熱量卻相者 5 的小。 胃 另一方面，根據本發明，金屬片係焊接至電流集電器以 形成電極接頭，然後將電極活性材料塗覆至電流集電器。 因此，係可使用雷射接合焊接或電阻焊接以提供一高結合 力。 ° 此由第二材料（b)製成的金屬片可直接焊接至由第一材 料⑷製成的電流集電器。然而，較佳地，由第二材料⑻製 成的金屬片係焊接至凸出於電流集電器之小尺寸焊接部。 此電流集f器的焊接部更加促進金屬片的焊接作用。 15 20 在一較佳實_中，電池單元對中之其中一個，即由第 一材料⑷製成的電極板，包含了一由紹製成的電流隼電 益’且電池單元對中之另一個，即由第二材料⑻製成的電 極板，包含了一由銅製成的電流集電器。舉例而言，當由 鋁製成的電流集電器使用作為陰極板時，則由銅製成的電 流集電器係可使用作為陽極板。 在此例中，由銅製成的金屬片係焊接至由紹製成的電流 ^器以形成一電極接頭（第一電極接頭），且由銅製成的電 :木電器係包含了一與電流集電器相同材料(例如銅)製成 =極接頭（第二電極接頭），此電極接頭係自電流集電器 伸出來。較佳地’第一電極接頭與第二電極接頭具有相 11 200807792 在—較佳實施例中，如先前所述，由銘製成的 肌:電器具有一凸出於其之焊接部，此焊接部具有一長 =目當：第二電極接頭長度的1/4至2/3,並且由銅製成的金 β :乎、¥接至由紹製成的電流集電器之浑接部以形成具有 一、第二電極接頭相近尺寸的第一電極接頭。 10 15 \ I* 20 的雷=本1明的另—目的’係提供—種如上所述而構成 反之製造方法，此方法包含⑴焊接複數個由一第二 製成之金屬片至一由—第一材料⑷製成之第一長 ’電流集電器（Α)以形成複數個第—電極接頭，⑼塗覆一 電極活性材料至每一第一長片式電流集電器中除了 頭所形成的區域外之至少-主要表面，㈣塗覆一電極 /材料至一第二長片式電流集電器⑻中除了複數個第 —電極接頭所形成的區域外之至少一主要表面，此第二長 片式電流集電器由第二材料⑻所製成’此第二電極接頭係 由與弟二長片式電流集電器(Β)相同的第二材料(b) ^自第二長片式電流集電器⑻延伸出來；以及（w)將塗覆 舌性材料之此第-及第二長片式電流集電器⑽⑽割 、—包括至少-個該些第-或第二電極接頭之預定尺寸。 在-較佳實施例中，此方法包含焊接一由一第二 所製成的長金屬條至由第-材料⑷製成的第—長片式電、$ 集電器⑷以形成對應於電極接頭（第—電極接頭）的區域: 以作為步驟⑴。在此例中，金屬條可以切割為在㈣步驟中 之第一電極接頭的形式。 12 200807792 5 根據本發明的另一目的，係提供一種包含由上述所構 成的電極板之電池單元。尤其，此電池單元包含了 一以複 數個電極板依序堆疊的一結構所構成的電極組件以及連接 至凸出於電極板之電極接頭末端的電極導線，而此電極導 線係為與電極板相同材料所製成。200807792 IX. Description of the Invention: The present invention relates to an electrode plate for a battery unit, and more particularly to an electrode plate device comprising: a structure formed by a pair of electrode plates, wherein the 5-electrode plates The invention comprises a current collector made of different materials (a, b), electrode joints respectively formed on the current collector, and at least one main surface coated in each current collector except the electrode joint, one of which is a metal piece made of the second material (b) is welded to the end of the current collector made of the first material (a) to form the electrode joint, and the electrode active material is applied to the metal sheet for welding at 1 〇 The current collector after the current collector. [Prior Art] In recent years, secondary batteries that can be charged and discharged have been widely used as energy sources for the operation of the line. Secondary batteries have also attracted a lot of attention in terms of energy sources for electric vehicles (ev) and hybrid 15 electric vehicles (HEVs). These vehicles have been developed to overcome various problems, such as air pollution caused by gasoline and diesel vehicles currently using chemical fuels. Each small size mobile device uses one or a plurality of small size batteries = yuan. On the other hand, medium-sized or large-sized devices, such as vehicles, use eight battery modules with a plurality of interconnected battery cells to provide the high output and large capacity required for medium or large size devices. ▲ If possible g, the medium or large size battery module preferably has a small size and weight. For this reason, prismatic batteries or pouch batteries which can be stacked at a high density and have a small weight/volume ratio are often used as batteries of medium size or large size 200807792 size battery modules. In particular, since the weight of the pouch battery is small and the manufacturing cost is also low, the battery using the thin sheet as a protective member is currently receiving more attention. The pouch battery includes an electrode assembly composed of a structure in which a plurality of cathodes and anodes are sequentially stacked and a separator is disposed between the cathode and the anode, respectively. A plurality of cathode and anode contacts projecting from the cathode and the anode are coupled to the cathode and anode wires via a tandem connection to form an external input (four) input. In a pouch battery, the cathode is generally made of _, and the anode is generally made of copper. In particular, the cathode current collectors, (4) joints and cathode conductors constituting each cathode are made of M, and the anode current collector, anode joint and anode lead wires constituting each anode are made of copper. Therefore, although the constituent members constituting the cathode and the anode are coupled to each other via welding, there is still not a large amount of heat generation. On the other hand, in a medium or large size battery module, the battery cells are connected in series to provide a high output. The pouch battery is connected to each other via a solder joint, a port, and an anode lead made of copper. However, when two electrode wires made of different materials are welded to each other, a large amount of heat is generated. The heat generated by this is transferred to the electrode active material coated on the cathode current collector. This results in degradation of the electrode active material. When the battery unit is exposed to an environment containing a narrated material such as a salt or the like, corrosion may occur in the connection region between the battery cells because of the relationship between the rot and the rot. In order to solve the above problem, Japanese Patent Application Publication No. 2004_247244 discloses a technique of using a cathode wire made of copper and (iv) and an anode wire made of steel to constitute a battery unit. In particular, the copper is bonded to the end of the cathode wire, and the joint region is wound by the 5 electrically insulating member, so that the region electrically connected between the cathode wire and the anode wire is made of the same material. Thereby, such a welding process is easy to carry out and heat is generated. However, in the cathode wire, the joint region between the copper and the front portion is not formed by the tandem connection, but the copper and the sinter portion are brought into contact with each other by means of a resin coating. In the result, 10 is in the joint region. The bonding force between copper and slag is small, and in addition, the connection resistance is increased during the electrical conduction of the battery cells. Furthermore, the copper/ming bonding area is on the electrode lead and, therefore, this copper/indicated area has the potential to abut a sealed area to the battery housing. For this reason, it is necessary to increase the size of the sealing portion of the battery case. On the other hand, the gap defined between the electrode (4) and the sealing portion is increased, i.e., the gap is in the region where the electrode tab and the electrode lead are joined to each other. As a result, the safety of the battery will be lowered and the size of the battery will increase. In the same manner, Japanese Patent Application Publication No. 2005-339931 discloses a technique of coating an aluminum wire to an anode wire projection protruding from the outer side of the mother cell. The unit comprises a cathode wire made of the name attached to the anode wire made of copper, and a through hole is formed in the cathode wire and the anode wire, thereby completing the bonding between the battery cells without welding, and thus avoiding Corrosion of the bonding area between the battery cells. However, the above technique requires an additional process, such as electroplating, 200807792 to coat aluminum to the anode lead. The manufacturing cost of the battery unit is increased as the manufacturing process is completed. Therefore, this technique is used to increase the welding ability between the battery wires and the anode wires in series with the battery cells, and to increase the corrosion resistance in a salt-containing gas environment. The present invention solves the above-mentioned technical problems. The adjacent system provides a kind of electrode plate, which can improve the welding in two phase lines =:: When the τ is connected, the cathode is used to manufacture a battery module. - The other purpose of the 7 is to provide an electrode plate which can improve the corrosion resistance of the corpus A further object of the present invention is to provide a method for manufacturing an electrode plate, a battery unit 1 manufactured by the method for manufacturing an electrode plate, and a battery module of the medium or large size, which comprises a plurality of The battery unit of the unit battery. According to the present invention, the above or other objects can be achieved by providing the electrode plate assembly 20f, the electrode plate device comprising a pair of electrode plates, wherein the electrode plate includes - ―Materials and—Parts: a plurality of current collectors made of material (10), a plurality of electrode joints each formed at the current collector, and at least one main body coated in each current collector except the electrode joints. The surface electrode active material 'one of the metal pieces made of the second material (8) made of 200807792 is welded to the first material (the current end of the current set (4) to form the electrode joint, and is connected to the current in the metal moon After collecting electricity, the t-pole active material is applied to the current collector cell..:: 5 15 In the electrode plate according to the present invention, the cathode current 'electricity: the device and the anode current are made of different materials (4) Made up of cathode current collector;: The electrode joint with the % pole current collector is made of the same second material (9). Therefore, when a battery unit is manufactured by using the electrode plate of the present invention = The cathode and anode joints that protrude from the battery as early as the anode are made of the same material _1 and thus can be joined to the cathode joint and the anode joint = and the $ pole conductor is the same material as the cathode joint and the anode joint Therefore, when a plurality of battery cells are electrically connected to each other, the electrode wires made of the phase materials are joined to each other, whereby the joints and the electrode wires and the electrode wires can be increased accordingly. The soldering ability between the materials. Similarly, the bonding area between the different materials is located at the electrode tab and thus the size of the battery unit does not increase, and in the case of a battery case having the same size of the battery unit, The force of the sealing portion does not decrease. In addition, when the first material (4) is a material having a relatively south-corrosive resistance, and the first material (4) is located inside the battery unit, the material can be promoted in a salt-containing gas environment. Corrosive. Preferably, the method of soldering a metal piece to a current collector is by laser welding or resistance welding. Generally speaking, 'laser bonding welding or resistance welding is a combination of 'but' There is a large amount of heat in the joint area. Therefore, when laser joint welding or resistance welding is performed to the electrode joint protruding from the 20 200807792 current collector (which is coated with an electrode active material), the heat of welding is transmitted. To the current collector, this result in a decline in the electrode active material and thus a decrease in the bonding force. Therefore, the welding process usually uses an ultrasonic welding method, and although the bonding force is low, the heat of the welding is small. Stomach On the other hand, according to the present invention, the metal piece is welded to a current collector to form an electrode joint, and then the electrode active material is applied to the current collector. Therefore, laser joint welding or electric resistance welding can be used to provide a high bonding force. ° This metal piece made of the second material (b) can be directly welded to the current collector made of the first material (4). Preferably, however, the metal sheet made of the second material (8) is welded to the small-sized welded portion protruding from the current collector. The welding portion of the current collector f further promotes the welding action of the metal piece. 15 20 In a preferred embodiment, one of the pair of battery cells, that is, the electrode plate made of the first material (4), contains a current made by the electric device and the other of the battery cells One, the electrode plate made of the second material (8), contains a current collector made of copper. For example, when a current collector made of aluminum is used as the cathode plate, a current collector made of copper can be used as the anode plate. In this case, a metal piece made of copper is welded to a current device to form an electrode joint (first electrode joint), and the electric: wood electrical system consisting of copper and a current set The same material of the appliance (for example, copper) is made into a pole joint (second electrode joint) which protrudes from the current collector. Preferably, the first electrode joint and the second electrode joint have a phase 11 200807792. In a preferred embodiment, as previously described, the muscle: electrical appliance has a welded portion protruding therefrom, the welding The portion has a length = 1/4 to 2/3 of the length of the second electrode joint, and the gold β made of copper is connected to the nip of the current collector made by the squirrel to form 1. A first electrode joint of a similar size to the second electrode joint. 10 15 \ I* 20 of the mine = the other purpose of the present invention is provided as described above and constitutes the opposite manufacturing method, the method comprising (1) welding a plurality of metal sheets made from a second to a - The first material (4) is made of a first long current collector (Α) to form a plurality of first electrode joints, and (9) an electrode active material is coated to each of the first long-sheet current collectors except for the head. At least a major surface outside the region, (4) coating an electrode/material to at least one major surface of the second long-sheet current collector (8) except for a region formed by the plurality of first electrode joints, the second long film The current collector is made of the second material (8). This second electrode joint is the same as the second material of the second long-plate current collector (Β) (b) ^ from the second long-sheet current collector (8) extending; and (w) cutting the first and second long-sheet current collectors (10) (10) of the coated tongue material, including at least a predetermined size of the first or second electrode joints. In a preferred embodiment, the method includes soldering a long metal strip made from a second to a first long piece of electrical material (4) made of a first material (4) to form an electrode joint. Area of (first electrode joint): as step (1). In this case, the metal strip can be cut into the form of the first electrode joint in the (IV) step. 12 200807792 5 According to another object of the present invention, there is provided a battery unit comprising the electrode plate constructed as described above. In particular, the battery unit includes an electrode assembly formed by a structure in which a plurality of electrode plates are sequentially stacked, and an electrode lead connected to an end of the electrode connector protruding from the electrode plate, and the electrode lead is the same as the electrode plate Made of materials.

10 電極導線可以不同方式而連接至電極接頭。較佳地， 電極導線係以超音波焊接而連接至電極接頭。其原因在 於’ S電極接頭與電極導線（其係由相同材料所製成）互相連 接4 ’僅使用超音波焊接即可足以獲得所需之結合力。亦 當傳導至電極活性材料（其塗覆於電流集電器）的熱減到 取小牯，亦可完成電極接頭電極導線之間的電性連接。 15 20 另一方面，當電極活性材料塗覆至電極導線連接至電 極接頭之後的電流集電器時，電極導線與電極接頭之間的 連接可經由前述的雷射接合焊接或電㈣接而完成。 電極導線的材料並無特別限制，只要電極導線為盘電 極接頭相同的材料所製成即可，而此電極接頭係連接至電 極導線、。、亦即，電極導線可由不同材料所製成。特別地， 如^所述’本發明的電池單^之陰極接頭與陽極接頭的外 # ^ ^由相同材料所製成’且因此，陰極導線與陽極導線 連接至陰極接頭與陽極接頭，且亦由㈣材料所製成。 在此結構中，電極導線較佳係由銅所製成。於由薄片製成的電池外殼内之電極組件， 此“包卜金屬層及一樹脂層，且較佳為一础片。 13 200807792 較佳地，貼合複數個絕緣膜至在電極導線中與一電池 外殼接觸的上表面及下表面之區域，藉以完成電池外殼與 電極導線的隔絕。 根據本發明的更一目的，係供一種中尺寸或大尺寸電 5池模組，具有-高輸出與大電容量，其中，此電池模組包 含複數個作為單位電池的電池單元。 較佳地，至少部份的電池單元係互相串聯的連接，如 此電池單元係直接互相結合，而完成高輸出的電池模組。 在本發明的電池模組中，陰極導線與陽極導線係由相同的 1〇材料所製成，且因此可完成電池單元之間所需的電性連接 而不需另外使用匯流排。 【實施方式】 現在，本發明的較佳實施例將伴隨著參考圖式詳述於 15後。然而，值得注意的是，本發明的範嘴並不限制於所述 的實施例中。 口圖1係為本|明_較佳實施例中包含複數個電極板的電 池單元之立體示意圖。冑了方便說明，部分電極接頭係在 圖式中省略。 請參考圖1，電池單元600包含一電極組件4〇〇，盆係為 由複數個陰極板100，101，102…以及複數個陽極板 200,201，2G2···依序堆疊所構成的—結構，而複數個隔離膜 300刀別配置於陰極板1〇〇，1〇1，1〇2…與陽極板 200,201，202···之間，且裝設於電池外殼5〇〇内。 20 200807792 陰極板1 00具有一塗覆在陰極電流集電器11 〇上的陰極 活性材料120。陰極接頭130凸出於陰極板1〇〇相對的末端。 每一陰極接頭130係由一以銅所製成的金屬片（此後，稱為 銅片150)的結構所構成，其焊接至凸出於陰極電流集電器 5 Π0的小尺寸焊接部140上，此焊接部140由鋁所製成。 另一方面’陽極板200具有一塗覆在陽極電流集電器21〇 上的陽極活性材料220。陽極接頭230凸出於陽極板2〇〇相對 的末端。 在陰極板100，101，102〜與陽極板200,201，202—的結構 10 中，複數個凸出於陰極板100,101，102···的陰極接頭13〇與複 數個凸出於陽極板200,201，202…的陽極接頭230係分別連 接至外加的電極導線410及420。此結構係清楚繪示於圖2 中’其係為電池單元組裝後，圖1的電池單元的前視穿透圖。 請參考圖2，電池單元600係為由陰極導線410與陽極導 15 線42〇凸出至電池外殼500相對末端的外側所構成的一結 構0 1/ 陰極導線410與陽極導線420係由銅所製成。陰極導線 410與陽極導線420係分別連接至陰極接頭130與陽極接頭 230的銅片150上。附加的絕緣膜430係塗覆於陰極導線41〇 20 與陽極導線420在電池外殼500的一密封區域210上。 圖3至圖5係為描述依據本發明一示範性方法以製造陰 極板製程的前視圖。 請參考此等圖示，複數個銅片150，151，152···係藉由焊 接而固定至一長片式銘電流集電器ll〇a的預定區域上，— 15 200807792 陰極活性材料120係塗覆至此電流集電器11(^上，且將此電 流集電态110a切割，如圖5所示，以製造一陰極板u〇。此 陰極板1 ίο可具有一陰極接頭13〇，其係藉由銅片15〇與鋁電 々丨l π包态110a之間的焊接部14〇，經由切割電流集電器u〇a 5相對側邊的區域所構成，其中，銅片15()，15i，i52···係固定 在凹槽結構A内。 圖6至圖8係為描述依據本發明另一示範性方法以製造 陰極板製程的前視圖。 此等圖式顯示的製造方法’除了將—長銅條⑽藉由焊 10接而固定於此鋁電流集電器110a，且接著將此銅條16〇切割 之外’皆與圖3及圖4的製造方法相同。 圖9係為由互相連接兩電池單元所製造而成的電池模組 的透視圖，其中之一電池單元係為如圖丨所示。 明參考圖9，電池模組700包含二電池單元（一第一電池 15早tgIGG與-第二電池單元1G1)，此二電池單元具有陰極導 線410與412以及陽極導線42〇與似，其皆由銅所製成，並 ;且分別凸出於電池單元1〇〇與1〇1相對的末端。此二電池單 元1〇〇與ιοί係經由第一電池單元100的陰極導線41〇與第二 電池單元101的陽極導線422之間的結合，而彼此以串聯的 2〇方式連接。在此，陰極導線41〇與陽極導線422之間的結合 係容易藉由焊接而完成’其原因在於此陰極導線410與陽i 導線422二者係由銅所製成。 在此之後，本發明的實施例將敘述得更詳細。然而，值 得注意的是，本發明的料並不限制於所描㈣實施例中。 16 200807792 第一實施例 兩個具有長為5cm、寬為lcm以及厚度為5〇〇μηι的矩形 銅片，係置放於超音波焊接儀器，而使得銅片的末端於銅 片縱向互相重疊大約lcm，一焊接頭係被帶至與銅片間的重 5疊區域接觸，以及具有一大約40ΚΗζ的頻率之超音波能量 應用至銅片間的重疊區域。在此方式中，係以超音波焊接 的方式實施。 第一比較性實施例 根據與第一實施例相同的方法，以超音波焊接方式將兩 10個金屬片互相固定’但不使用一具有長為5cm、寬為^以 及厚度為500μηι的矩形銅片，而使用一具有與矩形銅片相同 尺寸的矩形鋁片。 第一實驗性實施例 第一實施例與第—比較性實施例丈旱接的金屬#的焊接 15強度係由ASTM測試方法測量而得之。此測量結果顯示實施 例1焊接的金屬片所顯示的焊接強度為lllkg/cm2。另一方 面，第-比較性實施例焊接的金屬片所顯示的焊接強度為 8kg/cm其原因在於具有相同金屬材料（例如銅）的薄片 之間的焊接能力較優於具有不同金屬材料（例如銅與 20 薄片之間的焊接能力。 第一實施例 2-1陰極板的製造 如圖6所不’ -長銅條係以雷射接合焊接的方式連接至 長片式㈣的預定區域，以及將-陰極混合漿料塗覆至 17 200807792 鋁箔相對的主要表面上，此陰極混合漿料係由添加95重量 百分比的UCo〇2、2·5重量百分比的Super_p(一導電劑）以及 2·5重量百分比的PVdF(一黏結劑）至作為溶劑的n_ f基 吡，酮（NMP)製備而得。接著，將此鋁箔切割，如圖8所示， 5 X臬&具有一陰極接點的陰極板，此陰極接點係形成於 陰極板一側。 ' 2-2陽極板的製造 一陽極混合漿料係塗覆至一長片式銅箔相對的主要表 面上，此陽極混合漿料係由添加95重量百分比的人造石 10墨、2·5重量百分比的Super-P(—導電劑）以及2·5重量百分比 的PVdF(—黏結劑）至作為溶劑的ΝΜρ.備而得。接著，在 如圖8所示的凹槽結構中，將此銅猪切割，以製造一具有陽 極接頭的陽極板，此陽極接頭係形成於陽極板一侧。 2-3電池單元的製造 15 將2]節所述的方法中所製造的陰極板以及2_2節所述 的方法中所製造的陽極板堆叠，而複數個隔離膜係分別配 置於陰極板與陽極板之間，並且凸出於陰極板與陽極板相 對末端的陰極·接頭與陽極接頭係分別連接至陰極導線盘陽 極導線（此二者係由銅所製成）。此電極組件係裝設於電池 外殼内，並且一電解液係注入至電極組件内。以此方式可 製得一電池單元。 2-4電池模組的製造 18 200807792 2·3節所述的方法中所製造的三個電池單元係互相串聯 連接以製造一電池模組。電池單元中的電極導線之間的連 接係藉由超音波焊接而完成。 第二比較性實施例 5 根據與第二實施例相同方法製造而得的一電池模組，但 除了每-陰極板在其一端係為由紹製成的陰極接頭以及每 一陰極導線係由铭製成之外。 第二實驗性實施例 Α了確認由第二實施例以及第二比較性實施例製造的 H)電池模組中的電極導線之間的結合力之不同，係拉伸此電 極導線之間的連接區域直到此連接區域斷裂，以測量此連 接區域的拉力。此測量結果顯示，第一實施例所製造的包 含有此電池單元的電池模組中之電極導線間的結合力係大 約為第一比較性實施例所製造的包含有電池單元的電池模 Μ組中之電極導線間的結合力的15倍。其原因在於，當陰極 與陽極導線以超音波焊接而互相結合時，第二實施例所製 造的電池模組，其結合力較優於第二比較性實施例·所製造 的電池杈組，其中，第二實施例所製造的電池模組中之陰 極與陽極導線係互相結合且由相同材料製成（例如銅）。κ 20 第三比較性實施例 根據第二實施例的2-1節至2-3節所述之方法製造而得 、電池單元，但陰極活性材料塗覆至陰極電流集電器相對 的主要表面上，且銅接頭連接至陰極電流集電器而以雷射 19 200807792 ==區域係不塗覆有陰極活性材料，然後再將此陰 極電流集電器切割。 τ ϋ ^ 第四比較性實施例 根據第二實施例相同的方 此等電池單元互相_二：一模組’但當 ㈣的方式連接時，導線之間係利用雷 射接合知接的方式結合。 第三實驗性實施例 10 15 20 首先’根^二實_與第三比較性實施朗製造的電 二7G的魏特性似1GC_速率脈衝循環條件作測試。此 測試結果顯示，在充電與放電循環期間，第三比較性實施 例所製造的電池單元之電容量下降得比第二實施例所製造 的電池單元快。尤其，在⑽次循環之後，相較於根據第二 實施例所製造的電池單元，根據第三比較性實施例所製造 的f池單元的電容量下降大約20%。同樣地，在⑽次循環 之後，相較於根據第二實施例所製造的電池單元，第三比 較性實施例所製造的電池單元的電容量下降大約28%。：原 因在於，部分的活性材料係由於在塗覆有活性材料的陰極 電流集電器進行雷射接合焊接時的導熱的關係而衰退。 此外’第二實施例與第四比較性實施例所製造的電池模 組的循環特性仙10C.速率脈_環條件作賴。此測試 結果顯示，在200次循環之後，相較於根據第二實施例所製 造的電池模組，第四比較性實施例所製造的電池模組的輪 出下降大約34%。同樣地，在2〇〇次循環之後，相較於第二 實施例所製造的電池模組，第四比較性實施例所製造的電 20 200807792 池模組的電容量下降大約26%。其原因在於，當進行雷 ^焊接以使電極導線互相連接時’部分的活性材料會 向溫的熱產生而衰退，藉此，於高輪出條件下，第四比， ，貫施例所製造的電池模組的電容量與輸出係下降相當乂 夕。另-方面’第二實施例所製造的電池模組中，電極^ =之間的連接仙超音波焊接的方式進行，其❹生一相 田小的熱篁，藉此，在高輸出充電與放電條件下，第二實10 Electrode leads can be connected to the electrode connections in different ways. Preferably, the electrode lead is connected to the electrode tab by ultrasonic welding. The reason for this is that the 'S electrode joint and the electrode lead (which are made of the same material) are connected to each other 4', and only ultrasonic welding is sufficient to obtain the desired bonding force. Also, when the heat conducted to the electrode active material (which is applied to the current collector) is reduced to a small amount, the electrical connection between the electrode leads of the electrode joint can be completed. 15 20 On the other hand, when the electrode active material is applied to the current collector after the electrode lead is connected to the electrode tab, the connection between the electrode lead and the electrode tab can be completed via the aforementioned laser joint welding or electric (four) connection. The material of the electrode wire is not particularly limited as long as the electrode wire is made of the same material as the disk electrode connector, and the electrode connector is connected to the electrode wire. That is, the electrode wires can be made of different materials. Specifically, the cathode of the battery of the present invention and the anode of the anode are made of the same material, and thus, the cathode and anode wires are connected to the cathode and anode, and Made of (4) materials. In this structure, the electrode lead is preferably made of copper. An electrode assembly in a battery case made of a sheet, which comprises a metal layer and a resin layer, and is preferably a base sheet. 13 200807792 Preferably, a plurality of insulating films are bonded to the electrode wires. The upper surface and the lower surface of the battery case are in contact with each other to complete the isolation between the battery case and the electrode lead. According to a further object of the present invention, there is provided a medium or large size electric 5-cell module having a high output and The battery module comprises a plurality of battery cells as unit batteries. Preferably, at least some of the battery cells are connected in series with each other, so that the battery cells are directly coupled to each other to complete a high output battery. In the battery module of the present invention, the cathode wire and the anode wire are made of the same material, and thus the desired electrical connection between the battery cells can be completed without the need for an additional bus bar. [Embodiment] Now, preferred embodiments of the present invention will be described later with reference to the drawings. However, it is worth noting that the scope of the present invention is not limited to the 1 is a perspective view of a battery unit including a plurality of electrode plates in the preferred embodiment. For convenience of explanation, some electrode joints are omitted in the drawings. The battery unit 600 includes an electrode assembly 4〇〇, the basin is a structure composed of a plurality of cathode plates 100, 101, 102... and a plurality of anode plates 200, 201, 2G2···, and a plurality of isolations The film 300 is disposed between the cathode plate 1〇〇, 1〇1, 1〇2... and the anode plates 200, 201, 202··· and is installed in the battery case 5〇〇. 20 200807792 The cathode plate 100 has A cathode active material 120 coated on the cathode current collector 11 . The cathode tab 130 protrudes from the opposite end of the cathode plate 1 . Each cathode tab 130 is made of a metal piece made of copper (hereafter A structure called a copper sheet 150) is welded to a small-sized solder portion 140 protruding from the cathode current collector 5 Π0, and the solder portion 140 is made of aluminum. On the other hand, the anode plate 200 has An anode activity coated on the anode current collector 21〇 Material 220. The anode joint 230 protrudes from the opposite end of the anode plate 2. In the structure 10 of the cathode plates 100, 101, 102 to the anode plates 200, 201, 202, a plurality of protrusions are protruded from the cathode plates 100, 101, 102. The cathode connector 13A and a plurality of anode tabs 230 protruding from the anode plates 200, 201, 202, ... are respectively connected to the additional electrode wires 410 and 420. This structure is clearly shown in Fig. 2, which is a battery After assembly of the unit, the front view of the battery unit of Fig. 1. Referring to Fig. 2, the battery unit 600 is formed by the cathode lead 410 and the anode lead 15 line 42 〇 protruding to the outside of the opposite end of the battery case 500. A structure 0 1 / cathode lead 410 and anode lead 420 are made of copper. The cathode lead 410 and the anode lead 420 are connected to the copper tab 150 of the cathode tab 130 and the anode tab 230, respectively. An additional insulating film 430 is applied to the cathode lead 41 〇 20 and the anode lead 420 on a sealed region 210 of the battery case 500. 3 through 5 are front views for describing a process for fabricating a cathode plate in accordance with an exemplary method of the present invention. Referring to these illustrations, a plurality of copper sheets 150, 151, 152 are fixed to a predetermined area of a long-length type current collector 〇a by soldering, - 15 200807792 cathode active material 120 Applying to the current collector 11 and cutting the current collector state 110a, as shown in FIG. 5, to fabricate a cathode plate u. The cathode plate 1 ίο may have a cathode tab 13 〇 The solder portion 14A between the copper sheet 15 and the aluminum electric 々丨1 π package state 110a is formed by cutting the opposite side regions of the current collector u〇a 5, wherein the copper sheets 15(), 15i, I52··· is fixed in the groove structure A. Figures 6 to 8 are front views for describing a process for manufacturing a cathode plate according to another exemplary method of the present invention. The drawings show the manufacturing method 'except that- The long copper strips (10) are fixed to the aluminum current collector 110a by soldering 10, and then the copper strips 16' are cut except that they are identical to the manufacturing methods of Figs. 3 and 4. Fig. 9 is interconnected. A perspective view of a battery module manufactured by two battery cells, one of which is a battery unit Referring to FIG. 9, the battery module 700 includes two battery cells (a first battery 15 early tgIGG and a second battery unit 1G1), and the two battery cells have cathode wires 410 and 412 and an anode wire 42. All are made of copper, and protrude from the end of the battery unit 1〇〇 and 1〇1 respectively. The two battery units 1〇〇 and ιοί are via the cathode lead 41 of the first battery unit 100 and the first The bonding between the anode wires 422 of the two battery cells 101 is connected to each other in a series connection manner. Here, the bonding between the cathode wires 41A and the anode wires 422 is easily completed by soldering. Both the cathode lead 410 and the male i lead 422 are made of copper. Hereinafter, embodiments of the present invention will be described in more detail. However, it is noted that the material of the present invention is not limited to the description (4). In the embodiment, 16 200807792 The first embodiment two rectangular copper sheets having a length of 5 cm, a width of 1 cm and a thickness of 5 〇〇 μη are placed in an ultrasonic welding instrument such that the ends of the copper sheets are on the copper sheets. The portraits overlap each other by about 1 cm. The soldering tip is brought into contact with the heavy 5 stack region between the copper sheets, and the ultrasonic energy having a frequency of about 40 应用 is applied to the overlap region between the copper sheets. In this manner, it is implemented by ultrasonic welding. The first comparative embodiment fixes two 10 metal sheets to each other by ultrasonic welding according to the same method as the first embodiment, but does not use a rectangular copper having a length of 5 cm, a width of ^, and a thickness of 500 μm. Sheet, and using a rectangular aluminum sheet having the same size as the rectangular copper sheet. First Experimental Example First embodiment and the first comparative example of the welding of the metal #15 strength is measured by the ASTM test method And got it. The measurement results showed that the welded metal piece of Example 1 showed a welding strength of lllkg/cm2. On the other hand, the welded metal piece of the first comparative example exhibits a welding strength of 8 kg/cm because the welding ability between the sheets having the same metal material (for example, copper) is superior to that of having different metal materials (for example). The welding ability between copper and 20 sheets. The first embodiment 2-1 cathode plate is manufactured as shown in Fig. 6 - the long copper strip is connected to a predetermined area of the long piece (4) by laser bonding welding, and The cathode-mixed slurry was applied to the opposite main surface of 17 200807792 aluminum foil, which was added with 95% by weight of UCo 〇 2, 2.5 5% by weight of Super_p (a conductive agent) and 2. 5 The weight percentage of PVdF (a binder) is prepared by using n_f-pyridyl, ketone (NMP) as a solvent. Then, the aluminum foil is cut, as shown in Fig. 8, 5 X臬& has a cathode contact a cathode plate, the cathode contact is formed on one side of the cathode plate. '2-2 Anode plate fabrication-An anode mixed slurry is applied to the opposite main surface of a long piece of copper foil, and the anode mixed slurry system By adding 95 weight percent of man-made 10 ink, 2.5 wt% of Super-P (-conducting agent) and 2.5 wt% of PVdF (-bonding agent) to ΝΜρ. as a solvent. Next, in the concave as shown in FIG. In the groove structure, the copper pig is cut to produce an anode plate having an anode joint formed on one side of the anode plate. Manufacture of 2-3 battery cells 15 Manufactured in the method described in Section 2] The cathode plate and the anode plate stack manufactured in the method described in Section 2-2, and the plurality of separators are respectively disposed between the cathode plate and the anode plate, and protrude from the cathode and the opposite end of the cathode plate and the anode plate. And the anode joint is respectively connected to the anode lead wire of the cathode lead wire (both of which is made of copper). The electrode assembly is installed in the battery case, and an electrolyte is injected into the electrode assembly. A battery unit is manufactured. 2-4 Battery Module Manufacturing 18 200807792 The three battery units manufactured in the method described in Section 2. 3 are connected in series to each other to manufacture a battery module. The electrode wires in the battery unit Interconnection Ultrasonic welding is completed. Second Comparative Embodiment 5 A battery module manufactured according to the same method as the second embodiment, except that each of the cathode plates is formed at one end thereof by a cathode joint and each A cathode lead is made of the same. The second experimental embodiment confirms the difference in bonding force between the electrode wires in the H) battery module manufactured by the second embodiment and the second comparative embodiment. , the connection area between the electrode wires is stretched until the connection region is broken to measure the tensile force of the connection region. The measurement results show that the bonding force between the electrode leads in the battery module including the battery unit manufactured in the first embodiment is approximately the battery module group including the battery unit manufactured in the first comparative embodiment. 15 times the bonding force between the electrode wires. The reason for this is that when the cathode and the anode lead are combined with each other by ultrasonic welding, the battery module manufactured by the second embodiment has a better bonding force than the battery pack of the second comparative embodiment. The cathode and anode wires in the battery module manufactured in the second embodiment are bonded to each other and made of the same material (for example, copper). κ 20 The third comparative embodiment is fabricated according to the method described in Sections 2-1 to 2-3 of the second embodiment, but the cathode active material is applied to the opposite main surface of the cathode current collector. And the copper joint is connected to the cathode current collector to the laser 19 200807792 == the region is not coated with the cathode active material, and then the cathode current collector is cut. τ ϋ ^ The fourth comparative embodiment is the same as the second embodiment. When the battery cells are connected to each other _ two: a module 'but when (4) is connected, the wires are combined by means of laser bonding. . The third experimental example 10 15 20 First, the 'root ^ two real_ and the third comparative implementation of the electricity produced by the second 7G Wei characteristics like the 1GC_ rate pulse cycle conditions for testing. The results of this test showed that the capacity of the battery unit manufactured by the third comparative example was lowered faster than that of the battery unit manufactured in the second embodiment during the charge and discharge cycles. In particular, after (10) cycles, the capacitance of the f-cell unit manufactured according to the third comparative embodiment was reduced by about 20% compared to the battery cell manufactured according to the second embodiment. Similarly, after (10) cycles, the capacity of the battery cells fabricated in the third comparative embodiment decreased by about 28% compared to the battery cells manufactured according to the second embodiment. The reason is that part of the active material is degraded due to the heat conduction relationship in the laser bonding welding of the cathode current collector coated with the active material. Further, the cycle characteristics of the battery modules manufactured by the second embodiment and the fourth comparative example were based on the 10C. rate pulse_ring condition. The results of this test showed that after 200 cycles, the battery module manufactured by the fourth comparative example had a drop of about 34% as compared with the battery module manufactured according to the second embodiment. Similarly, after 2 cycles, the capacitance of the battery module 2098707792 manufactured by the fourth comparative embodiment was reduced by about 26% compared to the battery module manufactured in the second embodiment. The reason is that when the soldering is performed so that the electrode wires are connected to each other, the portion of the active material is degraded toward the warm heat, whereby the fourth ratio is produced under the high rotation condition. The battery module's capacitance is equivalent to the drop in output. In another aspect, in the battery module manufactured in the second embodiment, the connection between the electrodes ^= is performed in a manner of supersonic welding, which generates a small heat enthalpy, thereby charging and discharging at a high output. Under the condition

施例所製造的電池模組顯示__個高輸出與電容量維㈣均 勻的情形。 1〇 工業的應用性 。。由前面的敘述明顯可知’當含有本發明電極板的兩個電 池單元以串聯的方式互相連接而製造成一電池模組時，本 發明的電極板具有增進陰極端與陽極端之間焊接能力的效 果。此外，本發明的電極板在含鹽的氣體環境下，具有增 15 進耐腐蝕的效果。 曰 雖然本發明的較佳實施例已被揭露用以作為說明的目 的，热習該項技術者係可領悟不同的修飾、添加與取代可 月b，但均不悖離接下來的申請專利範圍所揭露的發明之範 疇與精神。 20 【圖式簡單說明】 圖1係本發明一較佳實施例之含有複數個電極板的電池 單元之立體示意圖。 21 200807792 圖2係為如圖1所示的電池單元，在此電池組裝後的前視 穿透圖。 圖3至圖5係本發明一示範性方法之製造陰極板製程的 前視圖。 5 圖6至圖8係本發明另一示範性方法之製造陰極板製程 的前視圖。 圖9係由互相連接兩個電池單元（其中之一係如圖丨所示） 而製造成一電池模組的前視圖。 10 【主要元件符號說明】 100，101，102 陰極板 110 陰極電流集電器 ll〇a 電流集電器 120 陰極活性材料 130 陰極接頭 140 焊接部 150,151,152 銅片 160 銅條 200,201,202 陽極板 210 陽極電流集冑|| 220 陽極活性材料 230 陽極接頭 3〇〇 隔離膜 400 電極組件 410,412 陰極導線 420,422 陽極導線 430 絕緣臈 500 電池外殼 600 電池單元 A 凹槽結構 22The battery module manufactured by the example shows that the high output and the electric capacity dimension (four) are uniform. 1〇 Industrial applicability. . It is apparent from the foregoing description that the electrode plate of the present invention has an effect of improving the welding ability between the cathode end and the anode end when the two battery cells including the electrode plate of the present invention are connected to each other in series to form a battery module. . Further, the electrode plate of the present invention has an effect of increasing corrosion resistance in a salt-containing gas atmosphere. Although the preferred embodiment of the present invention has been disclosed for illustrative purposes, those skilled in the art can appreciate different modifications, additions, and substitutions, but do not deviate from the scope of the next patent application. The scope and spirit of the disclosed invention. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of a battery unit including a plurality of electrode plates in accordance with a preferred embodiment of the present invention. 21 200807792 Figure 2 is a front view of the battery unit shown in Figure 1 after assembly of the battery. 3 through 5 are front views of a process for fabricating a cathode plate according to an exemplary method of the present invention. 5 to 8 are front views of a process for fabricating a cathode plate according to another exemplary method of the present invention. Figure 9 is a front elevational view of a battery module fabricated by interconnecting two battery cells, one of which is shown in Figure 。. 10 [Main component symbol description] 100,101,102 cathode plate 110 cathode current collector ll〇a current collector 120 cathode active material 130 cathode joint 140 welded portion 150, 151, 152 copper sheet copper strip 200, 201, 202 anode plate 210 anode current set 胄220 Anode Active Material 230 Anode Connector 3〇〇Isolation Film 400 Electrode Assembly 410,412 Cathode Conductor 420,422 Anode Conductor 430 Insulation臈500 Battery Housing 600 Battery Unit A Groove Structure 22

Claims (1)

200807792 十、申請專利範圍： 1· 一種電極板裝置，包括—對電極板所構成的一姓 構，其中該些電極板包括由一第一材料及一第 ： 成的多個電流集電器、乡彳目4自 ; _ 夕個各自形成於該些電流集電器之 電極接頭以及一塗覆至每一雷、、六隹雪 一 復主母電抓集電裔中除了該些電極接 頭外之至少一主要表面的電極活性材料，其中 一由該第二材料製成的金屬片係焊接至一由該第一材 料製成的電流集電器之末端以形成該電極接頭，並且在該 金屬片焊接至該電流集電器後，該電極活性材料係被塗覆 至該電流集電器。 2·如申請專利範圍第1項所述之電極板裝置，其中， 該金屬片帛接至該電流集電器的方式係以雷射接合焊接或 電阻焊接。 3 ·如申請專利範圍第1項所述之電極板裝置，其中， 15泫由該第二材料製成的金屬片係直接焊接至該由該第一材 料製成的電流集電器或焊接至凸出於該電流集電器的一小 尺寸焊接部。 4.如申請專利範圍第1項所述之電極板裝置，其中 該對電極板中之一電極板，即該由該第一材料製成的電 2〇 極板’包括一由鋁製成的電流集電器，以及 該對電極板中之另一電極板，即該由該第二材料製成的 電極板，包括一由銅製成的電流集電器。 5·如申請專利範圍第4項所述之電極板裝置，其中 一由鋼製成的金屬片係焊接至該由鋁製成的電流集電 23 200807792 器以形成一第一電極接頭，以及 該由銅製成的電流集電器包括一由與該電流集電哭相 同之銅材料製成的第二電極接頭，該第二電極接頭係自該 由銅製成的電流集電器延伸出來。 5 〃6.如申請專利範圍第1項所述之電極板裝置，其中， 該第一電極接頭以及該第二電極接頭有相同的長度。 7. 如申請專利範圍第6項所述之電極板裝置，其中 該由鋁製成的電流集電器具有一於此凸出的焊接部，該 焊接部具有-長度，其係相當於該第二電極接頭長度的Μ 10 至2/3，以及 -由銅製成的金屬片係焊接至該由鋁製成的電流集電 器之該焊接部以形成該具有與該第二電極接頭 第一電極接頭。 8. —種如申請專利範圍第丨至？項中任一項之電極板 15 裝置之製造方法，該方法包括·· ⑴焊接複數個由一第二材料製成之金屬片至一由一第 -材料製成之第一長片式電流集電器以形成複數個第一電 極接頭； (ii)塗覆一電極活性材料至該第一長片式電流集電器中 ’〇除了》亥些第—電極接頭所形成的區域外之至少一主要表 面； (m)塗覆一電極活性材料至一第二長片式電流集電器 中除了複數個第二電極接頭所形成的區域外之至少一主要 表面省第一長片式電流集電器係由該第二材料所製成， 24 200807792 繁- 電極接頭係由與該第二長片式電流集電器相同的 ;所製成且自該第二長片式電流集電器延伸出來； ，電(=)二塗覆有該活性材料之該第-及第二長片式電流 二定成一包括至少-個該些第-或第二電極接頭之 包括9:.如申請專利範圍第8項所述之方法，其中，該方法 材料Π:?:第二材料所製成的長金屬條至該由該第- -電桎接第一長片式電流集電器以形成對應於該些第 電極接碩的區域，以代替步驟（〇。 1〇· 一種電池單元，包括一由f 1至7項所述任-項之電^^減個如巾請專利範圍第 項電極板依序堆疊的結構所構诸的雪托 組件，其中，複數個由盥該此電 、、參 15 20 電極導㈣、… 頭相同材料所製成的 端。相連接至凸出於該些電極板之該些電極接頭的末 •彡h專利錢第10項所述之電池單元，A 些電極導線係蕻ώ和立、士 _ & ^ /、甲，该 导_由超曰波焊接而連接至該些電極接頭。 •如申請專利範圍第10項所述之電池 些電極導線係由銅所製成。 早70 /、中，該 雷;15第10項所述之電池單元，其中，’ 於一由一薄片所製成的電池外殼内4 片包含一金屬層及一樹脂層。 為烏 14·如申請專利範圍第〗3項所述之電池單元，其中，、— 25 200807792 數個絕緣膜係貼合至在該些電極導線中與一電池外殼接觸 的上表面及下表面之區域’藉以完成該電池外殼與該些電 極導線的隔絕。 — J5· -種中尺寸或大尺寸電池模組，具有一高輸出與大 電容量，其中，該電池模組包括複數個如申請專利範圍第 1〇項所述之作為單位電池的電池單元。 小立I6·如申請專利範圍第15項所述之電池模組，其中，至 、> P伤的電池單元係互相串聯連接，如此該些電池 10 ΐί:::極與陰極係彼此直接互相耦合，而完成高輸出的 26200807792 X. Patent application scope: 1. An electrode plate device comprising: a pair of electrode plates formed by a pair of electrode plates, wherein the electrode plates comprise a plurality of current collectors and a plurality of current collectors彳 4 自 ; 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 夕 电极 电极 电极 电极 电极 电极 电极 电极 电极 电极 电极 电极 电极 电极 电极 电极 电极 电极 电极 电极 电极 电极 电极 电极 电极a main surface electrode active material, wherein a metal piece made of the second material is welded to an end of a current collector made of the first material to form the electrode joint, and the metal piece is welded to After the current collector, the electrode active material is applied to the current collector. 2. The electrode plate device of claim 1, wherein the metal piece is attached to the current collector by laser joint welding or resistance welding. 3. The electrode plate device of claim 1, wherein the metal piece made of the second material is directly welded to the current collector made of the first material or welded to the convex For a small size weld of the current collector. 4. The electrode plate device according to claim 1, wherein one of the pair of electrode plates, that is, the electric 2 〇 plate made of the first material, comprises an aluminum plate. A current collector, and another electrode plate of the pair of electrode plates, that is, the electrode plate made of the second material, includes a current collector made of copper. 5. The electrode plate device of claim 4, wherein a metal piece made of steel is welded to the current collector 23200807792 made of aluminum to form a first electrode joint, and The current collector made of copper includes a second electrode joint made of the same copper material as the current collector, and the second electrode joint extends from the current collector made of copper. The electrode plate device of claim 1, wherein the first electrode connector and the second electrode connector have the same length. 7. The electrode plate device according to claim 6, wherein the current collector made of aluminum has a welded portion protruding therefrom, the welded portion having a length corresponding to the second电极 10 to 2/3 of the length of the electrode joint, and a metal piece made of copper is welded to the welded portion of the current collector made of aluminum to form the first electrode joint having the second electrode joint. 8. — For example, if the scope of the patent application is 丨? A method of manufacturing an electrode plate 15 device according to any of the preceding claims, comprising: (1) welding a plurality of metal sheets made of a second material to a first long piece current set made of a first material. The electrical appliance is configured to form a plurality of first electrode joints; (ii) coating an electrode active material into the first long-sheet current collector to at least one major surface outside the region formed by the first electrode joints (m) applying an electrode active material to at least one major surface of the second long-sheet current collector except for a region formed by the plurality of second electrode tabs, wherein the first long-sheet current collector is Made of the second material, 24 200807792 - the electrode joint is the same as the second long piece current collector; is made and extends from the second long piece current collector; The first and second long-sheet currents coated with the active material are determined to include at least one of the first or second electrode joints comprising: 9. The method of claim 8 , wherein the method material Π:?: second material Forming a long metal strip to the first long piece current collector by the first electric current to form an area corresponding to the first electrode connection, instead of the step (〇. 1〇· a battery unit, The utility model comprises a snow tray assembly constructed by a structure in which the electrode plates of the first item of the items f1 to 7 are sequentially stacked, wherein a plurality of the electrodes are sequentially stacked. And the end of the same material made of the electrode of the first and second ends of the electrode, and the battery unit of the tenth item of the electrode joint of the electrode joints of the electrode plates, A some of the electrode lead wires are connected to the electrode joints by super-wave soldering, and the electrode wires are as described in claim 10 The battery unit of claim 10, wherein the battery unit of the battery casing made of a sheet comprises a metal layer and a resin.层14. The battery unit described in item 3 of the patent application, wherein, - 25 2008 07792 A plurality of insulating films are attached to the areas of the upper surface and the lower surface of the electrode lead that are in contact with a battery case to complete the isolation of the battery case from the electrode wires. - J5 · - medium size or The large-size battery module has a high output and a large capacity, wherein the battery module includes a plurality of battery cells as a unit battery as described in claim 1 of the patent application. The battery module according to Item 15, wherein the battery cells that are damaged to and from the P are connected in series to each other, such that the batteries 10 and the cathode are directly coupled to each other to complete the high output.
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