1344234 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 之末端以形成該電極接頭，並且該電極活性材料塗覆至在 10 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 無線行動裝置的能量來源。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 少的注意。這些車輛係被開發用來克服各種問題，如目前 使用石化燃料之汽油及柴油車輛所造成之空氣污染。 每一小尺寸行動裝置皆使用一個或複數個小尺寸電池 單元另一方面，中尺寸或大尺寸裝置，如車輛，則使用 20 一具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。 如果可能的話，中尺寸或大尺寸電池模組較佳地具有 較小的尺寸及重量。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 13442341344234 IX. Description of the Invention: [Technical Field] The present invention relates to an electrode plate for a battery unit, and more particularly to an electrode plate device comprising: a structure composed of a pair of electrode plates, wherein the 5 electrodes The board comprises current collectors made of different materials (a, b), electrode joints each formed in the current collector, and at least one main surface coated in each current collector except the electrode joint, one of which 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 piece to be welded at 10 The current collector after the current collector. [Prior Art] In recent years, rechargeable and discharged secondary batteries have been widely used as energy sources for wireless mobile devices. Secondary batteries have also attracted considerable attention in terms of the application of energy sources for electric vehicles (EVs) 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 fossil fuels. Each small-sized mobile device uses one or a plurality of small-sized battery cells. On the other hand, a medium-sized or large-sized device, such as a vehicle, uses a battery module having a plurality of interconnected battery cells to provide High output and large capacity required for size or large size devices. A medium or large size battery module preferably has a smaller size and weight if possible. For this reason, prismatic batteries or pouch batteries that can be stacked at high density and have a small weight/volume ratio are often used for medium size or large size 6 1344234
10 15 20 尺寸電池模組的電池。尤其，由於袋狀電池之重量小，其 製造成本也較低，所以使用鋁薄片做為一保護構件的袋狀 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焊接 而與陰極導線及陽極導線結合，以形成外部輸出與輸入 端。在袋狀電池中’陰極一般係由鋁所製成，而陽極一般 係由銅所成。尤其，構成每—陰極的陰極電流集電器、 陰極接頭及陰極導線係皆由㈣製成，而構成每—陽極的 陽極電流集電H、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。 卜，八、】戏穴尺寸的電池模組中，電池為 元係以串聯的方式互相連接以提供高的輸出。袋狀電池々 經由鋁製成的陰極導線與銅製成的陽極導線之間進_ =合：互相連接、然而，當兩個由不同材料 式互相結合時’係會產生大量的熱。此心 料，此結果會使電極活性材料二;::::= 料(例如鹽或其類似物)的環境下時 ^的腐純的關係，也材能會 接2 域内產生㈣。 平兀之間連接£ 7 134423410 15 20-size battery module battery. In particular, since the weight of the pouch battery is small and the manufacturing cost thereof is also low, a pouch battery using an aluminum foil 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 joined to the cathode and anode wires via soldering to form external outputs and inputs. In a pouch battery, the cathode is generally made of aluminum, and the anode is generally made of copper. In particular, the cathode current collector, cathode junction and cathode lead wires constituting each cathode are made of (4), and the anode current collector H, the anode joint and the anode lead wire 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. Bu, VIII. In the cell module of the circus size, the cells are connected in series to provide high output. The pouch battery 阴极 is made by connecting a cathode lead made of aluminum and an anode lead made of copper to each other. However, when two are combined with each other by different materials, a large amount of heat is generated. According to this material, the result is that the relationship between the electrode active material 2;::::= material (for example, a salt or the like) in the environment can be generated in the second domain (4). Connection between flats £ 7 1344234
ίο 15 為了解決上述問題，曰本專利申請公開案號第 2004-247244號揭露一種使用由銅與鋁所製成的陰極導線 以及由銅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鋁端，並且此接合區域係利用 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 知接製权很容易進行並且不會產生熱。然而，陰極導線中， 銅與鋁部之間的接合區域並不是藉由焊接而形成，而是利 用塗覆樹脂的方式而使銅與鋁部互相接觸，於此結果中， 在接合區域中的銅與鋁之間的結合力很小，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/鋁 接合區域係位於電極導線上，且因此，此銅/㈣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，苴 需要增加電池外殼的密封部之尺寸。另一方面，電極組； 與密封部之間所定義的Μ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’日本專利中請公開案號第·5·33993ι號揭露 -種以铭塗佈至凸出於每一電池單元外側的陽極導線凸出 部的技術’而此電池單元包含—由紹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钱。 然而，上述的技術需要一道外加的製程，例如電鍵， 20 1344234 以k佈銘至~極導線。如此完成此製造製程時，也因此使 得電池單元的製造成本隨之增加。 因此急需一種技術以增加在電池單元互相串聯的連 寺陰極導線與陽極導線之間的浮接能力，並且增加在 5含有鹽氣體環境下的耐腐蝕性。 【發明内容】 因此本發明係解決上述的問題，且亦同時解決其他 技術問題。 10 15In order to solve the above problems, a technique of using a cathode lead made of copper and aluminum and an anode lead made of copper to constitute a battery unit is disclosed in Japanese Laid-Open Patent Publication No. 2004-247244. In particular, the copper is bonded to the aluminum end of the cathode wire, and the joint region is wound by the electrically insulating member, so that the region electrically connected between the cathode wire and the anode wire is made of the same material. Thus, such access rights are easy to carry out and do not generate heat. However, in the cathode wire, the joint region between the copper and the aluminum portion is not formed by soldering, but the copper and the aluminum portion are brought into contact with each other by coating the resin, and in this result, in the joint region The bonding force between copper and aluminum is small, and in addition, the connection resistance is increased during the electrical conduction of the battery cells. Furthermore, the copper/aluminum joint region is located on the electrode lead, and therefore, the copper/(tetra) joint region has the possibility of abutting to the sealed region of the battery can. For this reason, it is necessary to increase the size of the sealing portion of the battery case. On the other hand, the electrode group; the enthalpy defined between the sealing portion and the sealing portion is increased, that is, the space is in a region where the electrode terminal and the electrode wire 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 way, the Japanese Patent Laid-Open Publication No. 5/33993, the disclosure of the disclosure of the disclosure of the disclosure of the disclosure of the disclosure of the disclosure of the present disclosure to The formed cathode wire is attached to the anode wire 'made of copper and the through hole is formed in the cathode wire and the anode wire' thereby completing the bonding between the battery cells without soldering, and thus the bonding between the battery cells can be avoided The area of rotten money. However, the above technique requires an additional process, such as a key, 20 1344234 to k-ming to ~ pole wire. When the manufacturing process is thus completed, the manufacturing cost of the battery unit is accordingly increased. Therefore, a technique is urgently required to increase the floating ability between the cathode lead and the anode lead of the battery cells connected in series with each other, and to increase the corrosion resistance in a salt-containing gas atmosphere. SUMMARY OF THE INVENTION The present invention therefore solves the above problems and at the same time solves other technical problems. 10 15
*本發明的一目的係提供一種電極板，可增進在兩個相 鄰電池單元㈣聯的方式互相連接時，陰極導線與陽極導 線的焊接能力，以製造一電池模組。 本發明的另-目的係提供-種電極板，可增進在含有 鹽的氣體環境下之耐腐蚀性。 伞赞咧的再 ......... 证电性极您眾造方法，一 種包含由電極板的製造方法製造而得此電極板之電池單元 種中尺寸或大尺寸電池模組1包含複數個作為單 位電池之電池單元。 ~平 根據本發明的-目的，上述或其他目的可由—電極 置的提供而完成，此電極板裝置包、 -結構，立中電極柄以#枯對電極板所構成的 偁電極板包括一第一材 製成的多個電流集電器、多個各自…：：材料(a’b)所 谷自形成於電流集電器之雷 極接頭以及一塗覆至每一電流隼 之電 s丨、 爪杲電器中除了電極接頭外之 至夕一主要表面的電極活性#料 n其尹一由第二材料（b)製 20 Φ係焊接至忐第一材料(a)製成的電流集電器之; ::成電極接頭，並且在金屬片焊接至電流集電器 成’寫極活性材料係被塗覆至電流集電奸' 電器本發明的電極板中’陰極電流秦電器與陽極電流集 由不同材料（a，b)所製成，而凸出於陰極電流隼電器 :陽極電流集電器的電極接頭係由相同之第二材= 10 因此《電池單元係由使用本發明的電極板所製造 L 2 ^於電池單元的陰極接頭與陽極接頭係由相同材料 _g 因此可使電極導線接合至陰極接頭及陽極接 所制=此電極導線係、為與陰極接頭與陽極接頭相同的材料 _ 因此，當複數個電池單元互相電性連接時，由相 15 20 ^料所製成的電極導線係互相接合，藉此，可因此增加 5接碩與電極導線之間以及各電極導線之間的焊接能 。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，且在且有與 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-具有相當 幻生的材料時，而此第—材料⑷係位於電池單元内 貝’，可增進在含鹽氣體環境下的耐腐蝕性。 較佳地’將金屬片焊接至電流集電器的方式係利用雷射 ^焊接或電阻焊接。一般而言，雷射接合焊接或電阻焊 ΐ係提供一高的結合力，然而，在接合區域内卻會產生大 的’、、因此，S進行雷射接合焊接或電阻焊接至凸出於 10 ==電極接頭(其塗覆有電極活性材料)時，谭接的 lit 流集電11，此結果導致電極活性材料衰退， 超音合力隨之下降。因此，料製程通常係使用 法，雖然結合力低，但是焊接的熱量卻相當 的小。 另—方面，根據本發明，金屬片係谭接至電流集電器以 r電極接s貝’然後將電極活性材料塗覆至電流集電器。 因此’係可使用#射接合浮接或電阻輝接以提供—高結合 10 15 此由第二材料（b)製成的金屬片可直接焊接至由第一材 二⑷製成的電流集電器。然而’較佳地，由第二材料⑻製 、的金屬片料接至凸出於m電it之小尺寸焊接部。 此電机集電器的焊接部更加促進金屬片的焊接作用。 —在一較佳實施例中，電池單元對中之其中一個，即由第 :材料⑷製成的電極板含了一由鋁製成的電流集電 :，且電池單元對中之另—個，即由第二材料⑻製成的電 玉板，包含了一由銅製成的電流集電器。舉例而言，當由 =製成的電流集電器使用作為陰極板時，❹銅製成的電 μ集電器係可使用作為陽極板。 20 在此例中，由銅製成的金屬片係焊接至由|g製成的電流 、:電器以形成-電極接頭(第一電極接頭)，且由銅製成的電 集電器係包含了 一與電流集電器相同材料⑼如銅)製成 的電極接頭（第二電極接頭）’此電極接頭係自電流集電器 延伸出來。較佳地，第-電極接頭與第二電極接頭具有相 11 丄J斗 二=施例中’如先前所述，製成的 度相當於第之谭接部，此焊接部具有一長 屬度的Μ至的，並且由銅製成的金 與第由㈣成的電流集電器之浮接部以形成具有 與第一電極接頭相近尺寸的第—電極接頭。 的電=本發明的另一目的，係提供-種如上所述而構成 材料(b二製造方法，此方法包含⑴洋接複數個由-第二 η之金屬片至一由一第一材料⑷製成之第-長 電仇集電器（Α)以形成複數個第— 電極活性材料至每^ €極接頭⑻塗覆一 第長片式電流集電器中除了第一電 形成的區域外之至少一主要表面，㈣塗覆-電極 /舌丨生材料至一第-县η 弟一長片式電流集電器⑻中除了複數個第 頭所形成的區域外之至少—主要表面，此第二長 15 由與第二長片式電流（丄斤製成，此第二電極接頭係 且自签-具同的第二材料⑻所製成 第-長片式電流集電器(B)延伸出來 此第一及第二長片式電流集電二= 成-包括至少-個該些卜或第二電極接頭之預定尺寸。 20 在-杈佳實施例中，此方法包含谭接一由一第 的長金屬條至由第-材料⑷製成的第-長片式電流 形成對應於電極接頭(第一電極接頭)的區域； 乍為步驟⑴。在此财，金屬條可以㈣為在 之第一電極接頭的形式。An object of the present invention is to provide an electrode plate which can improve the soldering ability of a cathode wire and an anode wire when two adjacent battery cells (four) are connected to each other to manufacture a battery module. Another object of the present invention is to provide an electrode plate which is improved in corrosion resistance in a gas atmosphere containing a salt. The umbrella is praised again......... The electric power is extremely popular, a battery module of the size or large size of the battery unit including the electrode plate manufactured by the electrode plate manufacturing method. Contains a plurality of battery cells as unit batteries. According to the present invention, the above or other objects can be accomplished by providing an electrode assembly, the electrode plate assembly, the structure, the center electrode handle, and the tantalum electrode plate comprising the dead electrode plate including a first a plurality of current collectors made of one material, a plurality of respective...:: materials (a'b) are formed from a lightning pole joint formed in the current collector, and an electric s丨, claw applied to each current In addition to the electrode joint, the electrode activity of the main surface of the crucible is made of the second material (b) 20 Φ series welded to the current collector made of the first material (a); :: into an electrode joint, and in the sheet metal welded to the current collector into a 'write pole active material is applied to the current collector's electric appliance's electrode plate of the invention' cathode current Qin electric and anode current set from different materials Made of (a, b), and protruded from the cathode current device: the electrode connector of the anode current collector is made of the same second material = 10. Therefore, the battery unit is manufactured by using the electrode plate of the present invention. ^The cathode and anode joints of the battery unit are The same material_g can thus be used to bond the electrode lead to the cathode joint and the anode. This electrode lead is the same material as the cathode and anode joints. Therefore, when a plurality of battery cells are electrically connected to each other, the phase is The electrode wires made of 15 20 are bonded to each other, whereby the welding energy between the 5 and the electrode wires and between the electrode wires can be increased. Similarly, the junction area between the different materials is located at the electrode tab and, therefore, the size of the battery unit does not increase, and in the case of a battery case of the same size as the cell unit, the sealing portion thereof, : The power will not drop. Further, when the first material (4) is a material having a relatively fascinating material, and the first material (4) is located in the cell unit, the corrosion resistance in a salt-containing gas environment can be enhanced. Preferably, the manner in which the metal piece is soldered to the current collector is by laser welding or resistance welding. In general, laser joint welding or electric resistance welding provides a high bonding force, however, a large ', in the joint area, a large ', therefore, S is laser-welded or resistance-welded to protrude from 10 When the == electrode joint (which is coated with the electrode active material), the tan-connected lit current collects electricity 11, which results in deterioration of the electrode active material and a decrease in the supersonic force. Therefore, the material process is usually used. Although the bonding force is low, the heat of welding is quite small. On the other hand, according to the present invention, the metal piece is attached to the current collector to connect the electrode to the current collector. Therefore, it is possible to use #射接接接或电阻热接接 to provide - high bond 10 15 The metal piece made of the second material (b) can be directly soldered to the current collector made of the first material two (4) . However, preferably, the metal flakes made of the second material (8) are joined to the small-sized welded portion protruding from the m electric. The welded portion of the motor current collector further promotes the welding action of the metal piece. - In a preferred embodiment, one of the pairs of battery cells, ie the electrode plate made of the material: (4), contains a current collector made of aluminum: and the other of the battery cells That is, the electric jade plate made of the second material (8) contains a current collector made of copper. For example, when a current collector made of = is used as a cathode plate, an electric μ current collector made of beryllium copper can be used as an anode plate. 20 In this example, a metal piece made of copper is welded to a current made of |g, an electric appliance to form an electrode joint (first electrode joint), and an electric current collector system made of copper contains a An electrode connector (second electrode joint) made of the same material (9) as the current collector. This electrode joint extends from the current collector. Preferably, the first electrode joint and the second electrode joint have a phase 11 斗 J 二 2 = in the example, as described above, the degree of manufacture is equivalent to the first tan joint, and the welded portion has a long degree And the floating portion of the current collector of the fourth (four) to form a first electrode joint having a size close to that of the first electrode joint. Another object of the present invention is to provide a material for forming a material as described above (b. a manufacturing method comprising the steps of: (1) joining a plurality of metal sheets from the second η to a first material (4) The first-electrode collector (制成) is formed to form a plurality of first-electrode active materials to each of the per-pole joints (8) to coat at least a region of the first long-sheet current collector except for the first electric-formed region a major surface, (iv) coating-electrode/tongue material to at least a major surface of the first-counter η-dipole current collector (8) except for the area formed by the plurality of first ends, the second long 15 is extended by the first long film current collector (B) made of the second long piece current (made of the second electrode joint and the second material (8) of the same type) The first and second long-sheet current collectors 2 = include - at least one of the predetermined dimensions of the plurality of pads or the second electrode connector. 20 In the preferred embodiment, the method includes tanning one by one length The metal strip to the first-long sheet current made of the first material (4) is formed corresponding to the electrode joint (first electrode joint) Region; ⑴ at first step of this money, the metal strip may be in the (iv) to form a first electrode tab.
12 1344234 根攄本發明的另一目的，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 數個電極板依序堆叠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 5 線係為與電極板相同材料所製成。 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，當電極接頭與電極導線（其係由相同材料所製成）互相連 接時’僅使用超音波焊接即可足以獲得所需之結合力。亦 10 卩®傳導至電極活性材料（其塗覆於電流集電器）的熱減到 最小時，亦可完成電極接頭電極導線之間的電性連接。 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阻焊接而完成。 15 €極導線的材料並無特別限制，只要電極導線為與電 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t所述，本發明的電池單元之陰極接頭與陽極接頭的外 端係由相同材料所製成，且因此，陰極導線與陽極導線 係連接至陰極接頭與陽極接頭，且亦由相同材料所製成。 在此結構中，電極導線較佳係由銅所製成。 本發明的電池單元較佳係使用於一袋狀電池，此袋狀 電士具有-裝設於由薄片製成的電池外殼内之電極組件， 名片包3 —金屬層及一樹脂層，且較佳為一鋁箔片。 13 1344234 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，具有一高輸出與大電容量，其中，此電池模組包 含複數個作為單位電池的電池單元β 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;係直接互相結合’而完成高輪出的電池模組。 在本發明的電池模組中，陰極導線與陽極導線係由相同的 10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，本發明的範疇並不限制於所述 的實施例中β 圖1係為本發明一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。為了方便說明，部分電極接頭係在 圖式中省略。 20 请參考圖1 ’電池單元600包含一電極組件400，其係為 由複數個陰極板1〇〇，101，102…以及複數個陽極板 200,201，202…依序堆疊所構成的一結構，而複數個隔離膜 300分別配置於陰極板1〇〇，1〇1，1〇2…與陽極板 20〇,201，202-.，之間’且裝設於電池外殼5〇〇内。 14 陰極板100具有一塗覆在陰極電流集電器11〇上的陰極 T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13〇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 11〇的小尺寸焊接部14〇上，此焊接部14〇由鋁所製成。 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22〇<)陽極接頭23〇凸出於陽極板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 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23〇係分別連 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 線420凸出至電池外殼5〇〇相對末端的外側所構成的一結 構。 陰極導線41〇與陽極導線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13〇與陽極接頭 230的銅片15〇上。附加的絕緣膜43〇係塗覆於陰極導線41〇 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15〇, 151,152…係藉由焊 接而固定至一長片式鋁電流集電器110a的預定區域上，一 1344234 陰極活性材料120係塗覆至此電流集電器11〇&上，且將此電 流集電S 110a切割，如圖5所示，以製造一陰極板⑽。此 陰極板11〇可具有一陰極接頭130，其係藉由銅片15〇與铭電 流集電器UOa之間的焊接部14〇,經由切害·以流集電器㈣ 5相對側邊的區域所構成，其中，銅片15〇，151，152..,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 陰極板製程的前視圊。 此等圖式顯示的製造方法，除了將一長銅條丨6〇藉由焊 10接而固定於此鋁電流集電器ll〇a，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。 請參考圖9，電池模組7〇〇包含二電池單元（一第一電池 15單元100與第一電池單元101)，此二電池單元具有陰極導 線410與41 2以及陽極導線420與422，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 兀1〇〇與101係經由第一電池單元1〇〇的陰極導線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 20 方式連接。在此，陰極導線410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41〇與陽極 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，本發明的範疇並不限制於所描繪的實施例中。 16 1344234 第一實施例 兩個具有長為5 cm、寬為1 cm以及厚度為5 〇(^m的矩形 鋼片，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40KHz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 1〇個金屬片互相固定，但不使用—具有長為5cm、寬為lcm以 及厚度為500μπι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 第一實施例與第一比較性實施例焊接的金屬片的焊接 15 強度係由試方法測量而得之。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丨丨lkg/cm2 β另一方 面，第一比較性實施例焊接的金屬片所顯示的焊接強度為 7.8kg/cm2。其原因在於具有相同金屬材料（例如鋼）的薄片 之間的焊接能力較優於具有不同金屬材料（例如銅與鋁）的 20 薄片之間的焊接能力。 第二實施例 2-1陰極板的製造 如圖6所示，一長銅條係以雷射接合焊接的方式連接至 一長片式鋁箔的預定區域，以及將一陰極混合漿料塗覆至 17 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LiCo〇2、2.5重量百分比的Super_p(_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_甲基·2_ 吡咯酮（NMP)製備而得。接著，將此鋁箱切割，如圖8所示， 以製造一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 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nmp製備而得。接著，在 如圊8所示的凹槽結構中，將此銅箔切割，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側。 2-3電池單元的製造 將2-1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疊’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與陽 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 134423412 1344234 Another object of the present invention is to provide a battery unit comprising the electrode plates constructed as described above. In particular, the battery unit includes an electrode assembly formed by sequentially stacking a plurality of electrode plates, and an electrode lead connected to an end of the electrode connector protruding from the electrode plate, wherein the electrode is a 5-wire system and an electrode The board is made of the same material. The electrode leads can be connected to the electrode tabs in different ways. Preferably, the electrode lead is connected to the electrode tab by ultrasonic welding. The reason for this is that when the electrode tab and the electrode lead (which are made of the same material) are connected to each other, it is sufficient to use only ultrasonic welding to obtain the desired bonding force. Also, the heat transfer from the 10 卩® to the electrode active material (which is applied to the current collector) is minimized, and the electrical connection between the electrode lead electrode leads can also be completed. 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 accomplished via the aforementioned laser joint welding or resistance welding. The material of the 15-pole wire is not particularly limited as long as the electrode wire is made of the same material as the electrode connector, and the electrode connector is connected to the electrode wire. That is, the electrode wires can be made of different materials. Specifically, as described in t, the outer ends of the cathode tab and the anode tab of the battery unit of the present invention are made of the same material, and therefore, the cathode lead and the anode lead are connected to the cathode tab and the anode tab, and Made of the same material. In this structure, the electrode lead is preferably made of copper. The battery unit of the present invention is preferably used in a pouch-shaped battery having an electrode assembly mounted in a battery case made of a sheet, a business card package 3 - a metal layer and a resin layer, and Good for an aluminum foil. 13 1344234 Preferably, a plurality of insulating films are bonded to an area of the upper surface and the lower surface of the electrode lead which are in contact with a battery case to thereby complete the insulation of the battery case from the electrode lead. According to a further object of the present invention, there is provided a medium-sized or large-sized electric 5-cell module having a high output and a large capacitance, wherein the battery module comprises a plurality of battery cells β as unit cells, preferably At least some of the battery cells are connected in series with each other, so that the battery cells are directly combined with each other to complete the battery module with high rotation. In the battery module of the present invention, the cathode lead and the anode lead are made of the same 10 materials, and thus the desired electrical connection between the battery cells can be completed without the need for an additional bus bar. [Embodiment] Now, the preferred embodiment of the present invention will be described later in detail with reference to the drawings. However, it is to be noted that the scope of the present invention is not limited to the embodiment described. FIG. 1 is a perspective view of a battery unit including a plurality of electrode plates in a preferred embodiment of the present invention. For the convenience of explanation, some electrode joints are omitted in the drawings. 20 Referring to FIG. 1 'Battery unit 600 includes an electrode assembly 400 which is a structure formed by sequentially stacking a plurality of cathode plates 1 , 101, 102 ... and a plurality of anode plates 200 , 201 , 202 . A plurality of separators 300 are respectively disposed on the cathode plates 1〇〇, 1〇1, 1〇2, . . . and the anode plates 20〇, 201, 202-., and are disposed in the battery case 5〇〇. The cathode plate 100 has a cathode T material 120 coated on the cathode current collector 11A. The cathode tab 130 protrudes from the opposite end of the cathode plate 1〇〇. Each of the cathode tabs 13 is formed of a structure of a metal piece made of copper (hereinafter, referred to as a copper piece 150) which is welded to a small-sized welded portion 14 protruding from the cathode current collector 11A. Upper, the welded portion 14 is made of aluminum. On the other hand, the anode plate 200 has an anode active material 22 〇 <) coated on the anode current collector 21A), and the anode tab 23 is protruded from the opposite end of the anode plate 2''. In the structure of the cathode plates 100, 101, 102... and the anode plates 200, 201, 202, ... a plurality of cathode tabs 13 凸 protruding from the cathode plates 100, 101, 102, ... and a plurality of protruding from the anode plates 200, 201, 202... The anode contacts 23 are connected to the additional electrode leads 410 and 420, respectively. This structure is clearly illustrated in Figure 2, which is a front view of the battery unit of Figure 1 after assembly of the battery unit. Referring to Fig. 2, the battery unit 600 is a structure formed by the cathode wire 410 and the anode wire 420 protruding to the outside of the opposite ends of the battery case 5〇〇. The cathode lead 41〇 and the anode lead 420 are made of copper. The cathode lead 410 and the anode lead 420 are connected to the copper tab 15 of the cathode tab 13 and the anode tab 230, respectively. An additional insulating film 43 is applied to the cathode lead 41 〇 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 the illustrations, a plurality of copper sheets 15 〇, 151, 152 are fixed to a predetermined area of a long sheet aluminum current collector 110a by soldering, and a 1344234 cathode active material 120 is applied to the current collector. 11 〇 & and this current collector S 110a is cut, as shown in Fig. 5, to manufacture a cathode plate (10). The cathode plate 11 can have a cathode joint 130 which is connected to the welded portion 14A between the copper sheet 15 and the current collector UOa, and is cut by the opposite side of the current collector (4) 5 In the composition, the copper sheets 15〇, 151, 152.. are fixed in the groove structure A. 6 through 8 are front elevational views illustrating the fabrication of a cathode plate process in accordance with another exemplary method of the present invention. The manufacturing method shown in these figures except that a long copper strip 6丨 is fixed to the aluminum current collector 11〇a by soldering 10, and then the copper strip 16〇 is cut. 3 and the manufacturing method of FIG. 4 is the same. Fig. 9 is a perspective view of a battery module manufactured by connecting two battery cells to each other, one of which is shown in Fig. 。. Referring to FIG. 9, the battery module 7A includes two battery cells (a first battery 15 unit 100 and a first battery unit 101). The two battery units have cathode wires 410 and 41 2 and anode wires 420 and 422. They are all made of copper and protrude from the ends of the battery cells 1〇〇 and 1〇1, respectively. The two battery cells 兀1〇〇 and 101 are connected to each other in series 20 by the combination between the cathode lead 41 of the first battery unit 1 and the anode lead 422 of the second battery unit 101. Here, the bonding between the cathode wire 410 and the anode wire 422 is easily accomplished by soldering because the cathode wire 41 turns and the anode wires 422 are made of copper. Hereinafter, embodiments of the invention will be described in more detail. However, it is worth noting that the scope of the invention is not limited to the embodiments depicted. 16 1344234 First embodiment Two rectangular steel sheets having a length of 5 cm, a width of 1 cm and a thickness of 5 〇 (^m, placed in an ultrasonic welding instrument) such that the end of the copper sheet is in the longitudinal direction of the copper sheet Overlapping each other by about 1 cm, a solder joint is brought into contact with the heavy 5 stack region between the copper sheets, and ultrasonic energy having a frequency of about 40 KHz is applied to the overlap region between the copper sheets. In this manner, The method of ultrasonic welding is carried out. First Comparative Embodiment According to the same method as the first embodiment, two 1 metal sheets are fixed to each other by ultrasonic welding, but are not used - having a length of 5 cm and a width of 1 cm And a rectangular copper sheet having a thickness of 500 μm, and using a rectangular aluminum sheet having the same size as the rectangular copper sheet. First Experimental Embodiment First embodiment and welding of the metal sheet welded by the first comparative example 15 Strength system It was measured by a test method. The measurement results showed that the welded metal piece of Example 1 showed a weld strength of 丨丨lkg/cm2 β. On the other hand, the weld of the metal piece welded by the first comparative example showed The strength is 7.8 kg/cm 2. The reason is that the welding ability between the sheets having the same metal material (for example, steel) is better than the welding ability between the sheets having different metal materials (for example, copper and aluminum). Example 2-1 Production of Cathode Plate As shown in Fig. 6, a long copper strip was attached by laser bonding to a predetermined area of a long piece of aluminum foil, and a cathode mixed slurry was applied to 17 aluminum foil. On the main surface, this cathode mixed slurry was prepared by adding 95% by weight of LiCo〇2, 2.5% by weight of Super_p (_conductive agent), and 2.5% by weight of PVdF (a binder) to n-methyl as a solvent. 2_pyrrolidone (NMP) was prepared. Next, the aluminum can was cut, as shown in Fig. 8, to produce a cathode plate having a cathode contact formed on one side of the cathode plate. -2 Production of Anode Plate An anode mixed slurry was applied to the opposite main surface of a long piece of copper foil by adding 95 weight percent of artificial graphite and 2.5 weight percent of Super-P ( - conductive agent) and Preparing 25 wt% of PVdF (-bonding agent) to nmp as a solvent. Next, in a groove structure as shown in FIG. 8, the copper foil is cut to produce an anode plate having an anode joint. The anode joint is formed on one side of the anode plate. 2-3 Manufacture of battery cells The cathode plates fabricated in the method described in Section 2-1 and the anode plates fabricated in the method described in Section 2-2 are stacked in plural The isolation film is respectively disposed between the cathode plate and the anode plate and protrudes from the cathode of the opposite end of the cathode plate and the anode plate. The joint and the anode joint are respectively connected to the cathode wire and the anode wire (the two are connected by copper) The electrode assembly is mounted in a battery case, and an electrolyte is injected into the electrode assembly. In this way, a battery unit can be produced. 2_4 battery module manufacturing 1344234
10 15 2-3節所述的方法中所製造的三個電池單元係互 連接以製造-電池模組。電池單元中的電極導線連 接係藉由超音波焊接而完成。 、” 、連 第二比較性實施例 根據與第二實施例相同方法製造而得的—電池模组，作 除了每-陰極板在其-端係為由㈣成的陰極接頭以及每 —陰極導線係由鋁製成之外。 第二實驗性實施例 為了確認由第二實施例以及第二比較性實施例製造的 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—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 組中之電極導線間的結合力的15倍。其原因在於，當陰極 〃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 的電池模組’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）。 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 一電池單元’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 20 1344234 接合焊接的區域係不塗覆有陰極活性材牙斗，然&再將此陰 極電流集電器切割。 第四比較性實施例 根據第二實施例相同的方法製造而得一電池模組，但當 5此等電池單元互相串聯的方式連接時，導線之間係利用雷 射接合焊接的方式結合。 第三實驗性實施例 首先’根據第二實施例與第三比較性實施例所製造的電 池單7L的循環特性係以l〇C_速率脈衝循環條件作測試。此 10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1 〇〇次循環之後，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 的電池單元的電容量下降大約20〇/^同樣地，在200次循環 15 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%。其原 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 20 組的循環特性係以1〇C-速率脈衝循環條件作測試。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輸 出下降大約34%。同樣地’在200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 1344234 池模組的電容量下降大約26C/^其原因在於，當進行雷射 合谭接以使電極導線互相連接時，部分的活性材料會因為 高溫的熱產生而衰退，藉此，於高輸出條件下’第四比較 性實施例所製造的電池模組的冑$量與輸出係下降相^ 5多。另一方面，第二實施例所製造的電池模組中，電極二 2之間的連接係以超音波焊接的方式進行，其係產生一相 當小的熱量，藉此，在高輸出充電與放電條件下，第二實 施例所製造的電池模組顯示一個高輸出與電容量維持率均 勻的情形。 10 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 池單元以申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》 雖然本發明的較佳實施例已被揭露用以作為說明的目 的，熟習該項技術者係可領悟不同的修飾、添加與取代可 月fa ’但均不恃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】 園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 1344234 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。 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 U0a 電流集電器 130 陰極接頭 150,151,152 銅片 200,201,202 陽極板 220 陽極活性材料 3〇〇 隔離膜 410,412陰極導線 430 絕緣膜 6〇〇 電池單元 110 陰極電流集電器 120 陰極活性材料 140 焊接部 160 銅條 210 陽極電流集電器 230 陽極接頭 400 電極組件 420,422 陽極導線 500 電池外殼 A 凹槽結構The three battery cells manufactured in the method described in 10 15 2-3 are interconnected to manufacture a battery module. The electrode lead connection in the battery unit is accomplished by ultrasonic welding. a battery module manufactured according to the same method as the second embodiment, except that the cathode module and the cathode lead are formed at (four) each end of the cathode plate. The second experimental embodiment is for stretching the electrode in order to confirm the difference in bonding force between the electrode wires in the battery module manufactured by the second embodiment and the second comparative embodiment. The connection area between the wires is broken 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 wires in the battery module including the battery unit manufactured in the first embodiment is About 15 times the bonding force between the electrode wires in the battery module including the battery unit manufactured by the first comparative example. The reason is that when the cathode and the anode wires are combined with each other by ultrasonic welding, The battery module manufactured by the second embodiment has a better bonding force than the battery module manufactured by the second comparative embodiment, wherein the battery module manufactured by the second embodiment is cloudy. The pole and anode wires are bonded to each other and made of the same material (for example, copper). The third comparative embodiment is manufactured according to the method described in Sections 2-1 to 2-3 of the second embodiment to obtain a battery unit' However, 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 and the area welded by the laser 20 1344234 is not coated with the cathode active material, and & The cathode current collector is cut again. The fourth comparative embodiment is manufactured according to the same method of the second embodiment to obtain a battery module, but when the battery cells are connected in series to each other, the wires are utilized. The manner of laser bonding welding is combined. Third Experimental Embodiment First, the cycle characteristics of the battery cell 7L manufactured according to the second embodiment and the third comparative example were tested at a 10 速率C pulse rate cycle condition. The results of this 10 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. It is, after 1 循环 cycle, the capacitance of the battery unit manufactured according to the third comparative embodiment is decreased by about 20 〇 / ^ compared to the battery unit manufactured according to the second embodiment, similarly, at 200 After the sub-cycle 15, the capacity of the battery unit manufactured by the third comparative embodiment is reduced by about 28% compared to the battery unit manufactured according to the second embodiment. The reason is that part of the active material is coated The cathode current collector coated with the active material deteriorates in the heat conduction relationship at the time of laser bonding welding. Further, the cycle characteristics of the battery mold group 20 manufactured by the second embodiment and the fourth comparative example are 1 〇C. The rate pulse cycle condition was tested. The test results showed that after 200 cycles, the output of the battery module manufactured by the fourth comparative example decreased about that of the battery module manufactured according to the second embodiment. 34%. Similarly, after 200 cycles, the capacitance of the electric 1344234 cell module manufactured by the fourth comparative embodiment is reduced by about 26 C/^ compared to the battery module manufactured in the second embodiment. When the laser is connected to each other so that the electrode wires are connected to each other, part of the active material may be degraded by the heat generated by the high temperature, whereby the battery module manufactured by the fourth comparative example is subjected to high output conditions. The amount of $ is lower than the output system. On the other hand, in the battery module manufactured in the second embodiment, the connection between the electrodes 2 is performed by ultrasonic welding, which generates a relatively small amount of heat, thereby charging and discharging at a high output. In the condition, the battery module manufactured in the second embodiment shows a case where the high output and the capacity retention ratio are uniform. 10 Industrial applicability. It is apparent from the foregoing description that the electrode plate of the present invention has the ability to improve the welding 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 a joint manner to form a battery module. effect. In addition, 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 comprehend Different modifications, additions and substitutions may be made without departing from the scope and spirit of the invention disclosed in the scope of the claims. 20 [Simple Description of the Drawings] Park 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 1344234 Fig. 2 is a front view through the battery unit shown in Fig. 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. 6 through 8 are front views of a process for fabricating a cathode plate in accordance with 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 U0a current collector 130 cathode connector 150,151,152 copper plate 200,201,202 anode plate 220 anode active material 3 〇〇 isolation film 410, 412 cathode wire 430 insulating film 6 〇〇 battery unit 110 cathode current collector 120 cathode Active material 140 Welded portion 160 Copper strip 210 Anode current collector 230 Anode joint 400 Electrode assembly 420, 422 Anode lead 500 Battery housing A Groove structure
22twenty two