201123586 33362pit 六、發明說明： 【發明所屬之技術領域】 本發明是有關於一種電化學電池（electrochemical cell)，且特別是有關於利用雷射熔接以達成内部元件高強 度且低阻抗的電接觸。 本申請案主張2008年11月25曰申請之名稱 為 Method and Design for Externally Applied Laser Welding of Internal Connections in a High Power Electrochemical Cell”的美國(U. S.)臨時申請案號61/117760之權益，該專 利申請案之揭露内容以參考之方式併入本文中。 【先前技術】 在一電化學電池中，例如一電池單元(battery cell)，電 流自一電池電極箔(foil)傳遞至一位於中央的終端。電極箔 可以直接連接至中央終端，或者也可以是透過一個電流收 集襟片（tab)而連接至中央終端。在某些習知的能量傳送裝 置中，電極，名或襟片在其連接至中央終端的平面方向與電 池的長轴大致一致。使用此種連接方式在電池内於垂直方 向上需要相當大的空間。 S知的使用超音波、電阻或其他溶接方法以連接電極 襟片需要内部電池單元元件，例如襟片，可接近的熔接砧 (weld anvil)、電極、雷射光束等。提供了一種由美國專利 申請號：12/135，谓(祕高電流容量能量傳遞裝置的端帽 組合)所揭露的習知之連接技術。 圖1為習知之一種鋰離子電池單元1〇的示意圖。電 4 201123586 池單元10包括接頭端20以及非接頭端30。圖2為電池單 元1〇之接頭端20分離的示意圖。延伸襟片40用於使接頭 端20電耦合至電池單元1〇的内部工作。更詳細而言，延 伸襟片40為在負極端子5〇及配置在墊片7〇下的負電流收 集電極襟片60之間的導通管道。雖然在此架構中延伸襟片 疋必需的’但其也會佔據電池可額外用以提供一較高容量 電池的體積。保持一正電勢的正電極端8〇電耦合至電池 10°施加徑向的熔接以使電極襟片60連接至模仁9〇並且 產生熔接記號94。 【發明内容】 本實施例提供用於電化學電池中的末端-内嵌端帽 (end-cap insert)，此末端-内嵌端帽特別設計來允許雷射能 量能穿透過至少一電極襟片。此内嵌端帽設計同時也提供 限制圓形的熔接路徑的功能以確保在下方的電極襟片彼此 之間完全無空隙且部分重疊。沒有内部空隙的存在，藉由 雷射產生的鎖孔(laser generated keyhole)所形成的所有鲜 賤物(spatter)喷濺於電池外，因此可以減少當熔接電池的内 部元件時與自由金屬粒子相關的危險。 在本發明的一實施例中’一電化學電池具有一電池 罐、配置於電池罐内的一模仁，以及具有朝向遠離模仁之 一外表面的内嵌端帽。至少一電極襟片配置於内嵌端帽以 及模仁之間。内巍端帽、至少一電極襟片以及模仁藉由外 部雷射光束而熔接並電耦合。熔接使從内嵌端帽的外表面 延伸至模仁的被熔接元件發生物理轉變。 201123586 33362pif 在本發明的另一實施例中，提供一種外部連接一電化 學電池的内部兀件的方法。此方法包括提供—電池罐；將 至少-電極襟此置於電池罐中；將—模仁嵌人電池罐； 將-内I端帽相對於模仁而置放；以及提供—外部雷射光 束至内嵌端帽，其中内嵌端帽、至少一電極襟片，以及模 仁由自内嵌端帽延伸至模仁的熔接部而電耦合。 在上述任-實施例中，内嵌端帽為電池的陰極電勢以 及陽極電勢的其中之-。熔接部沿著電化學電池的轴向延 伸並且開始㈣嵌端帽的空心區。频部穿透内嵌端帽以 及至少一電極襟片。 在上述任-實關巾，轉部完全地賴於内嵌端 帽、至少一電極襟片以及模仁中。 在上述任-實施例中，溶接部未穿過任何内巍端帽、 至少一電極襟片及模仁之間的内部間隙。 在上述任-實施例中’端帽圍繞内嵌端帽並藉由縫溶 接(seam weld)而裝附至電池罐0 在上述任-實施例中，端帽與電池罐有不同的電勢。 内喪端帽具有正電勢，且其材質包括b内航帽具有負 電勢，且其材質為選自於鐵、鋼、鎳鑛鋼、鎳、不_、 銅及銅合金所構成的族群。 在上述任-實施例中，一柳針圍繞内欲端帽而設置。 内嵌端帽可為負極端子的—部分，且鉚釘包含騎鋼。在 又-實施例巾，鉚釘賴仁為1成贱為單一組件。 在上述任一實施例中，炫接部為-鎖孔溶接部。溶接 6201123586 33362pit VI. Description of the Invention: TECHNICAL FIELD OF THE INVENTION The present invention relates to an electrochemical cell, and more particularly to electrical contact using laser fusion to achieve high strength and low impedance of internal components. The present application claims the benefit of the United States (US) Provisional Application No. 61/117760, entitled "Method and Design for Externally Applied Laser Welding of Internal Connections in a High Power Electrochemical Cell", filed November 25, 2008, which is incorporated herein by reference. The disclosure is incorporated herein by reference. [Prior Art] In an electrochemical cell, such as a battery cell, current is transferred from a battery electrode foil to a centrally located terminal. The electrode foil may be directly connected to the central terminal, or it may be connected to the central terminal through a current collecting tab. In some conventional energy transfer devices, the electrode, name or bract is connected to the center. The plane direction of the terminal is substantially the same as the long axis of the battery. This connection method requires a considerable amount of space in the vertical direction in the battery. It is known that the use of ultrasonic waves, resistors or other soldering methods to connect the electrodes to the electrodes requires an internal battery. Unit elements, such as cymbals, accessible weld anvils, electrodes, laser beams, etc. A conventional joining technique disclosed in U.S. Patent Application Serial No. 12/135, which is incorporated herein by reference. 201123586 The pool unit 10 includes a joint end 20 and a non-joint end 30. Figure 2 is a schematic illustration of the split end 20 of the battery unit 1 . The extension tab 40 is used to electrically couple the joint end 20 to the internal operation of the battery unit 1 . In more detail, the extension cymbal 40 is a conduction conduit between the negative terminal 5〇 and the negative current collecting electrode cymbal 60 disposed under the spacer 7〇. Although in this architecture, the extension 襟 is required. It also occupies a volume that the battery can additionally provide to provide a higher capacity battery. The positive electrode terminal 8 that maintains a positive potential is electrically coupled to the battery 10° to apply radial fusion to connect the electrode tab 60 to the mold core 9 The present invention provides an end-cap insert for use in an electrochemical cell, the end-embed end cap being specifically designed to allow for laser energy energy. Penetrate at least Electrode bracts. This in-line cap design also provides the ability to limit the circular weld path to ensure that the underlying electrode tabs are completely free of voids and partially overlap each other. No internal voids are present by laser generation. All of the spatter formed by the laser generated keyhole is spattered outside the cell, thus reducing the risk associated with free metal particles when fusing the internal components of the cell. In one embodiment of the invention, an electrochemical cell has a battery can, a mold core disposed within the battery can, and an inner end cap having an outer surface facing away from the mold core. At least one electrode tab is disposed between the inner end cap and the mold core. The inner end cap, the at least one electrode tab, and the mold core are welded and electrically coupled by an external laser beam. The fusion causes a physical transformation of the welded element extending from the outer surface of the inlaid end cap to the mold core. 201123586 33362pif In another embodiment of the invention, a method of externally connecting an internal component of an electrochemical cell is provided. The method includes providing a battery can; placing at least the electrode in the battery can; embedding the mold in the battery can; placing the inner I end cap relative to the mold; and providing - an external laser beam To the inner end cap, wherein the inner end cap, the at least one electrode tab, and the mold core are electrically coupled by a weld extending from the inner end cap to the mold core. In any of the above embodiments, the inline end cap is one of the cathode potential of the battery and the anode potential. The weld extends along the axial direction of the electrochemical cell and begins (iv) the hollow region of the end cap. The frequency portion penetrates the embedded end cap and at least one electrode tab. In the above-described any-seal towel, the turn portion is completely dependent on the inlaid end cap, at least one of the electrode tabs, and the mold core. In any of the above embodiments, the weld portion does not pass through any inner end cap, at least one of the electrode tabs, and the internal gap between the mold cores. In the above-described embodiments, the end cap is wrapped around the inner end cap and attached to the battery can 0 by seam welding. In any of the above embodiments, the end cap has a different potential than the battery can. The inner end cap has a positive electric potential, and the material thereof includes a negative inner potential of the inner cap, and the material is selected from the group consisting of iron, steel, nickel ore, nickel, non-, copper and copper alloy. In any of the above-described embodiments, a lancet is disposed around the inner end cap. The inner end cap can be part of the negative terminal and the rivet contains steel. In the further embodiment, the rivet lining is a single component. In any of the above embodiments, the splicing portion is a keyhole fused portion. Dissolve 6
201123586 OJJDZpiI 部可形成近似於-半的至少-電極襟片之寬 徑’所以合成祕接部是完全地被限制在包含㈣端 至少一電極襟片以及模仁的一材料固體堆疊中。 在上述任一實施例中，内嵌端帽呈杯ί且外部雷射光 束沿著受内嵌端帽中的空心部限制的環形路徑行進。 *在上述任一實施例中，内破端帽上塗佈有—非多孔黏 著劑聚合物。 本發明的實施例提供較習知技術佔據較少空間的杯 狀設計，以更為有效地利用體積以及重量。據此，較大量 的有效質量可建立於電化學電池中。上述的特徵可以彼此 結合而實施。 為讓本發明之上述特徵和優點能更明顯易懂下文特 舉實施例，並配合所附圖式作詳細說明如下。 【實施方式】 本發明利用外部雷射能量以電連接一端帽元件至電 池單元的内部元件。鎖孔炼接(keyh〇ie weiding)可以用於一 南功率’雷射光束引起被熔接部件有一氣穴（vap〇r cavity)，此氣穴之後會被填滿液體金屬。也可用除了雷射 熔接以外的其它熔接手段以達到外部熔接。可執行的熔接 方法包括電子束熔接(electron beam welding)、電聚弧炫接 (plasma arc welding)，或是電阻熔接(resistance welding)。 焊接(soldering)或硬銲(brazing)技術也可以用於連接這些 部件。 二 圖3A為依據本發明一實施例之一電池單元的橫剖面 201123586 33362pif 圖，其說明在一高功率链離子電池單元1〇〇中，被烙接的 元件包含一内嵌端帽120、電極襟片13〇以及捲心如丨以⑺⑴ 模仁140。這些元件通過將端帽組裝至容納這個圓的捲心 模仁的電池罐以彼此連接，如此使内嵌端帽120、電 極襟片130以及該捲心模仁140在實施熔接前配置於其組 裝位置。在本實施例中，捲心為圓柱形。 由外部產生的雷射能量110直射至内嵌端帽120的表 面且其後並藉由形成雷射熔接柱或熔接塊150以穿透及 熔接内嵌端帽120至在下方的襟片13〇及支撐模仁14()。 在一實施例中，例如一近似於4公釐(mm)的熔接直徑幫助 確認熔接部完全穿透所有8公釐的襟片層，例如寬電極襟 片130 ’從而大幅減少或者徹底地排除電池單元内部的銲 濺物的風險。據此，可以減小雷射能量11〇穿透模仁14〇 的任何部位以及損害捲心的風險。雷射路徑的直經需要固 疋尺寸以避免包含電極間的間隙(gaps)或空間(啊㈣。内 嵌端帽120的表面具有厚度使雷射可以有效穿透。在一The 201123586 OJJDZpiI portion can form an abundance of at least --electrode cymbals of the --half-thickness so that the synthetic conjugate is completely confined to a material-solid stack comprising at least one electrode tab and the mold core at the (four) end. In any of the above embodiments, the inner end cap is in the cup and the outer laser beam travels along an annular path defined by the hollow portion in the inner end cap. * In any of the above embodiments, the inner end cap is coated with a non-porous adhesive polymer. Embodiments of the present invention provide a cup-shaped design that takes up less space than conventional techniques to more efficiently utilize volume and weight. Accordingly, a greater amount of effective mass can be established in an electrochemical cell. The above features can be implemented in combination with each other. The above-described features and advantages of the present invention will be more apparent from the following detailed description of the embodiments. [Embodiment] The present invention utilizes external laser energy to electrically connect an end cap element to an internal component of a battery unit. Keyhole we we we 可以 可以 可以 可以 可以 可以 可以 可以 可以 可以 可以 可以 可以 key key key key key key key key key key key key key key key key key key key key key key key key key key key 雷 雷 雷 雷 雷 雷Other welding means besides laser welding may also be used to achieve external welding. Executable welding methods include electron beam welding, plasma arc welding, or resistance welding. Soldering or brazing techniques can also be used to join these components. 2A is a cross-sectional view of a battery unit according to an embodiment of the present invention, in the cross section 201123586 33362pif, illustrating that in a high power chain ion battery unit, the soldered component comprises an embedded end cap 120 and an electrode. The cymbal 13 〇 and the core of the core are as follows (7) (1) phantom 140. These elements are connected to each other by assembling the end caps to the battery cans that accommodate the round core molds, such that the inner end caps 120, the electrode tabs 130, and the core mold core 140 are disposed in their assembly prior to welding. position. In this embodiment, the core is cylindrical. The externally generated laser energy 110 is directed to the surface of the inline end cap 120 and thereafter formed by the laser fusion post or fusion block 150 to penetrate and weld the inline end cap 120 to the underlying tab 13〇 And support the mold core 14 (). In one embodiment, for example, a weld diameter of approximately 4 mm (mm) helps to confirm that the weld completely penetrates all 8 mm enamel layers, such as wide electrode rafts 130', thereby substantially reducing or completely eliminating the battery. The risk of spatter inside the unit. Accordingly, it is possible to reduce the risk that the laser energy 11 〇 penetrates any portion of the mold core 14 以及 and damages the core. The direct path of the laser path requires a solid size to avoid inclusion of gaps (gaps) or spaces between the electrodes (ah (4). The surface of the inner cap 120 has a thickness such that the laser can penetrate effectively.
施例中，内嵌端帽120受雷射照射的部位有近似於〇5八 釐的厚度。 A -個直徑減小賴仁14〇可用於且可能減少兩個 部的襟片130的翻轉彎折需求。内嵌端帽12〇通過鉚釘 穩固地裝設至電池單元1GG上，其設計祕減少外部 110需穿透能有效地將所有的電極襟片13〇結合在一 材料量，以及用於減少會貞彡響電池單元之操 2 圍元件的過度加熱。此似杯狀設計的内嵌端帽12〇限制二 8 201123586 J^ozpu 鎖孔熔接路徑以及藉由減少於電化學電池中產生小且自由 流動的金屬粒子及熔融材料，以保持銲濺物於電池之外， 有利於内部元件的内部熔接。 某些材料電化學地適用於鋰離子電池單元的正電極 電勢，而某些材料電化學地適用於鐘離子電池單元的負電 極電勢。在一些實施例中，電池單元中可適用於一電勢的 =料並不能適用於另一相反的電勢。用於電池之正電勢部 份的材料為鋁以及鋁合金。這些材料具有可藉由普遍可用 的雷射科技來熔接的優點。 用於製作鋰離子電池之負電勢之元件的材料包括 鐵、鋼、鎳鍍鋼、錄、不鏽鋼以及銅或銅合金，例如硫鐵 鑛，以及銅器。在本發明的—實施例中，内嵌端帽120是 由高淨度的鎳(Ni 200或Ni2〇1)製成，其可以容易地盘銅 炼接’其中銅是用於製作襟片13㈣—種材料。銅通常是 =瓣子電池之負電極襟片的—種材料。銅較鎳具有相 虽低的電畴。銅也較魏促進達到較大的體積以及重量 1_的缺點在於當利用溶化溶接伽― we mg)方式與鋼連接時，熔接部中容易 fS)，使舰接的本質不可靠。然而，雷射溶接縫 ，。鎳同樣也；==帽rr :ί=負極端子之騎元件的材料。當内嵌端= :又大虱腐蝕的材料製作時將 製作内嵌端帽時，-❹孔黏著㈣合物塗佈層 201123586 33362pif 氧樹脂或丙烯酸可用於防止腐蝕性環境。 圖3B為另一電池單元使用圖3A之熔接元件的橫剖 面圖’其包括藉由熔接塊150彼此電連接的内嵌端帽12〇、 電極襟片130以及捲心模仁140以提供一高功率的鐘離子 電池單元100。依據一實施例，内嵌端帽12〇覆蓋於配置 在内嵌端帽120之通氣孔170上的一密封蓋16〇。通氣孔 Π〇延伸穿過内嵌端帽120的底部。密封蓋16〇可藉由提 供一熔接部162而連接至内嵌端帽120,例如，熔接部162 環繞密封蓋160的上緣。 由熔接塊或其他形式的熔接部150所形成之圓形熔接 使電池100的内部區域以及外部區域之間緊密的密封。熔 接部150也使連結在一起的元件於結構上更為穩固且更使 這些元件之間彼此電性連接。在某些情況下，裂縫或缺陷 的增長會讓熔接塊150無法達成密封。在本實施例中，氣 孔170的設置可防止熔接部15〇完全密封。此外，舉例而 s，熔接部150利用延伸熔接部至大約近似35〇度以形成 小於一 360度的圓。當未確定是一緊密的密封時，延伸熔 接部至350度或小於36〇度仍然能夠提供所需之結構的完 整以及使連結在—起的元件彼此之間電性傳導。相對的， 内嵌端帽120藉由密封蓋16〇而緊密地密封。當密封蓋16〇 钱入之後’可實施-茂漏測試(leaktest)e此茂漏測試可以 用任何合適的方式進行，例如該技術領域者所知悉的藉由 將氮氣或氦氣注入電池時的加壓(pressurizati〇n)並且監視 漏出的氣體。 201123586 在未依靠炫接部⑼提供密封的情 可以決定料的⑽U錢足叫 S(test=) 以減少對於i續密封1__試後未㈣^在= 況下有不正確的信賴，且此時是由轉部i5G暫時性地取 代密封蓋160來進行密封1㈣蓋⑽從—開始即有缺 陷’且電池健通軸關試，緊密的密封情況會因為溶 接部150之後的惡化或缺_增長而消除或減弱。此情況 提升對於雜部150較密封蓋16〇更易於及時增加缺陷的 考量。若可知從-開始即是由合適的密封蓋⑽取代溶接 部150來進行㈣，替對於電池能夠維持長時間的密封 會較有信心。 请參考圖4,其是一外部雷射熔接塊的橫剖面示意 圖。外部雷射光束能量11〇 I接穿過内嵌端中冒12〇，所以 電極襟片130熔接至捲心模仁14〇。此被熔接的材料從内 嵌端帽120的内表面以環繞的方式延伸至捲心模仁14〇。 本實施例之熔接塊顯示出鎖孔雷射熔接的典型形狀。也可 以用其它的熔接型式，例如傳導熔接（c〇nducti〇n welding)。傳導熔接對於材料較不具侵略性，但大量的熱 會傳遞至周圍的元件。鎖孔熔接較傳導熔接更為集中且通 吊使用一較高的尖峰功率以在短時間内爆裂(burst)。此熔 接是沿著内嵌端帽12〇的内部環狀運動來實現。 圖5A為另一實施例，其包括一終端陰極帽3〇〇A及 一體成型的内嵌端帽310A。在此實施例中，電池的一終 端或兩終端可以與電池罐(未繪示）電性絕緣《圖5B為終端 11 201123586 33362ριί* 陰極帽300Α的底部300Β以及包含當組裝時會對電極擠壓 的一突出部310Β的示意圖。圖5C為内嵌端帽3l〇A、氣 孔420以及填充孔440的橫剖面圖。圖5Α〜圖5C所示的 實施例考慮到外部雷射熔接從内嵌端帽310Α之朝外的接 觸底面延伸穿過突出部310Β並且延伸至捲心模仁14〇,如 上所述。 如圖6示’一端帽組合400具有可選擇而使用的内佚 端帽410。外部雷射能量直射入内嵌端帽410之位於内部 且朝外的接觸面422以將位於下方的電極襟片電連接至模 仁’其連接方式如上述。氣孔420設置於内嵌端帽41〇内 以釋放電池單元内漸大的壓力。鉚釘460環繞内嵌端帽41〇 而配置’並且連接至内嵌端帽410以提供與外部裝置的電 接觸。鉚釘460可由可適用於電化學的電池的一可導電及 導熱的材料製成。 塾片430利用連接元件以緊配於内嵌端帽41〇。聚合 物襯塾470配置於電池的端帽及襟片之間以密封。其他材 料例如以玻璃為基礎的介面也可以使用以形成密封。襯墊 470在端帽平板450以及鉚釘460之間提供一液密式密封 及電絕緣。填充孔440用於添加電解液至電池中。端帽平 板450環繞鉚釘46〇，如此使端帽組合4〇〇與電池罐結合 為一體。内嵌端帽410可作為陰極或陽極連接的一部件。 請參考圖7，為一實施例之一體成型的陰極端帽設 s十。此設計與如圖6所示之非一體成型的實施例相似；然 而’鉚釘500以及内嵌端帽51〇以一單一元件的型式製作。 12 201123586 如圖7所示，螺紋520縣使電化學電池裝設至 量的裝置或其他電池。 Μ 電、4ίΓ1二又一實施例中，包含-整體的陰極帽/ 城二。十、、广有一内嵌端帽640以作為電池罐_的一 。° *了>肖除熔接奸私電池的可能性，本實施 -優點為架構電池所需要的部件較少。如圖8所示會 終端與電池罐600絕緣。因為對於負極端 ’化費(c〇st)以及材料特性，此絕緣終端或非整體 2端適合用作負極端子。舉例而言，如果使用轉為整體 2 ’電池罐6GG的整體架構較輕。材料腐 的開口端實 部元件通過電池 =:ϊ，置於電池罐6°°内。内嵌端帽⑽允許外部 5措Γ以衣繞的方式射穿過開口 640以將電極襟片固定 如圖3Α及圖3Β所示的例子。氣孔420以及填充In the embodiment, the portion of the embedded end cap 120 that is exposed to the laser has a thickness of approximately 〇5 八. A-diameter reduction of Lairen 14〇 can be used and possibly reduces the need for flipping and bending of the two pieces of the flap 130. The inner end cap 12 is firmly fixed to the battery unit 1GG by rivets, and its design is designed to reduce the need for the outer 110 to penetrate and effectively combine all the electrode tabs 13 在一 in a material amount, and to reduce the meeting. Excessive heating of the surrounding components of the battery unit. The cup-like design of the inner end cap 12 〇 limits the 8 8 201123586 J^ozpu keyhole fusion path and by creating a small and free-flowing metal particle and molten material in the electrochemical cell to keep the spatter In addition to the battery, it facilitates internal welding of internal components. Some materials are electrochemically suitable for the positive electrode potential of lithium ion battery cells, while certain materials are electrochemically suitable for the negative electrode potential of a clock cell. In some embodiments, a material that is applicable to a potential in a battery cell is not applicable to another opposite potential. The material used for the positive potential portion of the battery is aluminum and aluminum alloy. These materials have the advantage of being fused by universally available laser technology. Materials for fabricating the negative potential of lithium ion batteries include iron, steel, nickel plated steel, recorded stainless steel, and copper or copper alloys such as pyrite, and bronzes. In the embodiment of the present invention, the inlaid end cap 120 is made of high-purity nickel (Ni 200 or Ni 2 〇 1), which can be easily copper-bunded 'where copper is used to make the cymbal sheet 13 (four) - Materials. Copper is usually the material of the negative electrode of the petal battery. Copper has a relatively lower electrical domain than nickel. Copper also promotes a larger volume and weight. The disadvantage of 1_ is that when it is connected to steel by means of melting and melting gamma, it is easy to fS), making the nature of the ship connection unreliable. However, the laser dissolves the seams. Nickel is also the same; == cap rr: ί = material of the riding element of the negative terminal. When the inlaid end =: a material that is too corroded to make an inlaid end cap, the puncture adhesion (tetra) coating layer 201123586 33362pif Oxygen resin or acrylic can be used to prevent corrosive environments. 3B is a cross-sectional view of another battery unit using the fusion splicing element of FIG. 3A, which includes an inner end cap 12A, an electrode tab 130, and a core die 140 that are electrically connected to each other by a fusion splicing block 150 to provide a high Powered clock ion battery unit 100. According to one embodiment, the inner end cap 12 is covered by a sealing cover 16 配置 disposed on the vent 170 of the inner end cap 120. The vent hole extends through the bottom of the inline end cap 120. The seal cap 16 can be coupled to the inline end cap 120 by providing a weld 162 that surrounds the upper edge of the seal cap 160, for example. The circular weld formed by the weld block or other form of weld 150 provides a tight seal between the inner and outer regions of the battery 100. The weld 150 also structurally bonds the components that are joined together and more electrically connects the components to one another. In some cases, the growth of cracks or defects may cause the weld block 150 to fail to seal. In the present embodiment, the arrangement of the air holes 170 prevents the welded portion 15 from being completely sealed. Moreover, by way of example, the weld 150 utilizes the extended weld to approximately 35 degrees to form a circle of less than one 360 degrees. When it is not determined to be a tight seal, extending the weld to 350 degrees or less is still capable of providing the desired structural integrity and electrically connecting the joined components to one another. In contrast, the inner end cap 120 is tightly sealed by the sealing cover 16〇. The leak test can be performed in any suitable manner when the sealing cover 16 is slammed into, for example, when the nitrogen or helium gas is injected into the battery as is known to those skilled in the art. Pressurize (pressurizati〇n) and monitor the leaking gas. 201123586 In the case of not providing a seal by the splicing joint (9), it can be determined that the (10) U money is called S (test=) to reduce the incorrect trust for the i-continuation seal 1__ after the test (4) ^ in the case of =, and this At this time, the sealing portion 160 is temporarily replaced by the rotating portion i5G to perform sealing. (4) The cover (10) is defective from the beginning and the battery is closed, and the tight sealing condition may be deteriorated or insufficient due to the melting portion 150. Eliminate or weaken. This situation raises the consideration of the fact that the miscellaneous portion 150 is more likely to increase the defect in time than the sealing cover 16〇. It can be seen that the replacement of the fusion portion 150 by a suitable sealing cap (10) from the beginning is carried out (4), and it is believed that the battery can be maintained for a long time. Please refer to FIG. 4, which is a cross-sectional view of an external laser splicing block. The external laser beam energy 11 〇 I passes through the embedded end and is 12 〇, so the electrode cymbal 130 is fused to the core mold 14 〇. The fused material extends from the inner surface of the inner cap 120 to the core mold core 14 in a circumferential manner. The spliced block of this embodiment shows the typical shape of the keyhole laser splicing. Other fusion types, such as conductive welding, can also be used. Conductive fusion is less aggressive to the material, but a significant amount of heat is transferred to the surrounding components. The keyhole fusion is more concentrated than the conductive fusion and is used with a higher peak power to burst in a short time. This fusion is achieved by an internal annular motion of the embedded end cap 12〇. Figure 5A is another embodiment including a terminal cathode cap 3A and an integrally formed inline end cap 310A. In this embodiment, one terminal or two terminals of the battery can be electrically insulated from the battery can (not shown). FIG. 5B is the bottom end of the terminal 11 201123586 33362ριί* cathode cap 300Α and includes the electrode being squeezed when assembled. A schematic diagram of a protrusion 310Β. Figure 5C is a cross-sectional view of the inlaid end cap 31a, the air hole 420, and the filling hole 440. The embodiment shown in Figures 5A through 5C allows for external laser welding to extend from the outwardly facing contact bottom surface of the inner end cap 310 through the projection 310 and to the core mold core 14 as described above. As shown in Figure 6, the 'end cap assembly 400 has an inner end cap 410 that is selectable for use. The external laser energy is directed into the inner and outward facing contact surface 422 of the inner end cap 410 to electrically connect the underlying electrode tab to the mold' in a manner as described above. The air holes 420 are disposed in the inner end cap 41 to release the increasing pressure within the battery unit. The rivet 460 is disposed around the inner end cap 41 and is coupled to the inner end cap 410 to provide electrical contact with an external device. The rivet 460 can be made of an electrically conductive and thermally conductive material that is suitable for use in electrochemical cells. The crotch panel 430 utilizes a connecting member to fit tightly to the inline end cap 41. The polymer liner 470 is disposed between the end caps of the battery and the cymbal to seal. Other materials such as glass based interfaces can also be used to form the seal. Pad 470 provides a fluid tight seal and electrical insulation between end cap plate 450 and rivet 460. Filling holes 440 are used to add electrolyte to the battery. The end cap flat plate 450 surrounds the rivet 46〇 such that the end cap assembly 4〇〇 is integrated with the battery can. The inline end cap 410 can be used as a component of a cathode or anode connection. Referring to FIG. 7, a cathode end cap of one body is formed for one embodiment. This design is similar to the non-integral embodiment shown in Figure 6; however, the 'rivet 500 and the inlaid end cap 51' are made in a single element type. 12 201123586 As shown in Figure 7, the 520 county has the electrochemical cell installed in a quantity of devices or other batteries.又一Electricity, 4ίΓ1 2 In another embodiment, the integral cathode cap/City II is included. Ten, there is a built-in end cap 640 as one of the battery cans. ° *了> The possibility of smashing the battery, this implementation - the advantage is that fewer components are required to build the battery. As shown in Fig. 8, the terminal is insulated from the battery can 600. This insulating termination or non-integral 2 end is suitable for use as a negative terminal for the negative terminal cost and material properties. For example, if the overall structure used to convert to the overall 2' battery can 6GG is lighter. The actual component at the open end of the material rot is placed within 6 ° of the battery can by battery =: 。. The inner end cap (10) allows the outer 5 to be woven through the opening 640 in a garment-wound manner to secure the electrode tabs as shown in Figures 3A and 3B. Air hole 420 and filling
匕3在内，且在非整體端帽/電池罐組合中以相同 的形式來操作。 T 來實ί據本發明’上述之不同實施觸特徵可以彼此組合 太路^然本發明已以實施例揭露如上，然其並非用以限定 太路HH A何所屬技術領域中具有通常知識者，在不脫離 發明之和範圍内’當可作些許之更動與潤飾，故本 【圖式當視後附之中請專利範圍所界定者為準。 圖1為習知的-種電化學電池設計。 13 201123586 33362pif 元 旧為習知之電化學電池之接頭端分離的示 設計圖制餘…〜㈣㈣接的ΐ池單 翻密封蓋之電池單元設計的橫剖面圖。 圖為棱供一熔接部穿過襟片堆疊並進入模仁 部雷射光束熔接塊的橫剖面圖。 、 卜 的示本發明—實施例之具有—内嵌端帽之陰極帽 圖5Β為本發明一實施例之陽極帽的示意圖。 圖5C為本發明一實施例之具有一内嵌端帽之陰 的橫剖面圖。 圖6為本發明一實施例之非一體成型的陰極端帽/内 欲端帽設計的橫剖面圖。 圖7為本發明一實施例之一體成型的陰極端帽/内嵌 端帽設計的橫剖面圖。 圖8為本發明一實施例之與端帽一體成型之一電池 罐的橫剖面圖。 【主要元件符號說明】 10 :電池單元 20 :接頭端 30 =非接頭端 40 :延伸襟片 50 :負極端子 60 :電極襟片匕3, and operates in the same form in a non-integral end cap/battery can combination. According to the present invention, the different implementation touch features described above may be combined with each other. However, the present invention has been disclosed in the above embodiments, but it is not intended to limit the general knowledge of the technical field in the field of HH A. It is possible to make some changes and refinements without departing from the scope of the invention. Therefore, the scope of the patent is subject to the definition of the patent. Figure 1 is a conventional electrochemical cell design. 13 201123586 33362pif yuan Old-fashioned electrochemical cell joint end separation diagram Design diagram surplus...~(4)(4) Connected to the Dianchi single Cross-sectional view of the battery unit design of the flip seal cover. The figure shows a cross-sectional view of the ribs for a weld through the stack of rafts and into the laser beam of the mold. BRIEF DESCRIPTION OF THE DRAWINGS The present invention has a cathode cap having an inner end cap. Fig. 5 is a schematic view of an anode cap according to an embodiment of the present invention. Figure 5C is a cross-sectional view of the underside of an inlaid end cap in accordance with one embodiment of the present invention. Figure 6 is a cross-sectional view showing the design of a non-integrally formed cathode end cap/inner end cap according to an embodiment of the present invention. Figure 7 is a cross-sectional view showing the design of a body-molded cathode end cap/embedded end cap in accordance with one embodiment of the present invention. Figure 8 is a cross-sectional view showing a battery can integrally formed with an end cap according to an embodiment of the present invention. [Main component symbol description] 10 : Battery unit 20 : Connector end 30 = Non-connector end 40 : Extension tab 50 : Negative terminal 60 : Electrode tab
201123586 JJJOZpiI 70 :墊片 80 :正電極端 90 :模仁 94 :熔接記號 100 :電池單元 110 :外部雷射 120 :内敌端帽 121 :鉚釘 130 :電極襟片 140 :捲心模仁 150 :熔接部 160 :密封蓋 162 :熔接部 170 :通氣孔 300A :終端陰極帽 300B :底部 310 A :内嵌_端帽 310B :突出部 400 :端帽組合 410 :内嵌端帽 420 :氣孔 422 :接觸面 430 :墊片 440 :填充孔 201123586 33362pif 450 :端帽平板 460 :鉚釘 470 :聚合物襯墊 500 :鉚釘 510 :内嵌端帽 520 :螺紋 600 :電池罐 610 :内嵌端帽 640 :開口 16201123586 JJJOZpiI 70 : spacer 80 : positive electrode terminal 90 : mold core 94 : welding symbol 100 : battery unit 110 : external laser 120 : inner enemy cap 121 : rivet 130 : electrode diaphragm 140 : core mold core 150 : Welding portion 160: sealing cover 162: welding portion 170: vent hole 300A: terminal cathode cap 300B: bottom portion 310 A: inlay_end cap 310B: protrusion portion 400: end cap assembly 410: inline end cap 420: air hole 422: Contact surface 430: spacer 440: filling hole 201123586 33362pif 450: end cap plate 460: rivet 470: polymer liner 500: rivet 510: inline end cap 520: thread 600: battery can 610: inline end cap 640: Opening 16