200832784 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種電氣化學電池，特別是關於一種 由環狀襯墊為媒介之一對盥狀之金屬容器所組合而成 之電氣化學電池。 【先前技術】BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electro-chemical battery, and more particularly to an electro-chemical battery in which a ring-shaped metal container is assembled from an annular gasket as a medium. [Prior Art]
鋰電池或雙層電氣電容等之小型電氣化學電池，廣 泛地被利用於行動電話或筆記型個人電腦等之攜帶型 電子製品之辅助電源或者是被利用於當作主電源之功 能。此種電氣化學電池如發明專利文獻所記載，係由一 面部及前述面部之邊緣略為垂直延伸之壁部所構成之 二個盥狀之金屬容器經由環狀之襯墊為媒介而組合而 成，且整體作為為一鈕扣狀之電氣化學電池被廣泛地利 用。前述之襯墊係由橡膠等絕緣材料所構成，且藉由經 前述之襯墊為媒介組合前述金屬容器，使各個金屬容器 具有電氣化學電池之電極端子之功能。 Ίχ月專利文獻所揭不之電氣化學電池中，其上側之 金屬容器較下側之金屬容器還要再小一輪。而且，於襯 墊上形成有溝槽，將襯墊裝配於下侧金屬容器之壁部之 内周士則上側之金屬容器之壁部的前端被插入襯墊上 =之見方向中央所形成之溝。接著，藉由下侧之金屬容 為之壁部的上端向内侧彎曲，以及不使襯塾滑動的情況 下’將上側之金屬容器押入下側之今屬交哭，Ρ彳兩入Ρ 容馳整密接且閉合，可兩金屬 或裝=精ΐ此之構成中’金屬容器或襯墊之尺寸 二丁养择又，於上側之金屬容器之壁部之彎曲加工之 σ 4又g有一定程度的參差不齊。因為前述參差不 5 200832784 背，就算不完全壓迫前述襯墊密接部的一 能於前述的一部份漏出電解質。 。刀’也有可 為此，先前技術藉由於襯墊表面塗 之瀝青所構成的頂棚材料，且將前 馆種由未完成 襯墊與金屬容11之間，以防止電解 ^棚材料介置於 棚材料塗佈之厚度不均勻，會有於做，時’若頂 所增加的熱使電解質容易漏出的問題。試或實裳時 使頂棚材料可均-性地㈣ =言’為了 時，此襯塾可因前述溶於襯塾 技術之雙層電極電容之:、生中，沾肐、。為此，先前 劑（亦即，較高黏度)之^材^^也塗佈限制量的溶 【發明專利文獻】日本料為必要的。 報 本％卉公開20〇5-123017號公 【發明内容】 依本發明之第—實施 其特徵為：具備有第乳化學電池， 部及自前述表面部邊緣略其係包含表面 部；具備有一環狀襯藝、，直二 σ 1出形成之壁 屬容器之壁部之前端却有一可收納前述第一金 及外侧面部分別覆蓋°於卞王=圓周之狹^J a其底面部 壁部；前述第-金卜弟—金屬容器之表面部及 以純角折曲，以使敎前端部’係被向内侧 屬容器侧壓人；於覆將向前述第二金 環狀突*部。 成有―射述表面部之圓周同心之 200832784 接著，依本發明之另一實施例，提供一種電氣化學 電池，其特徵為：具備有第一及第二金屬容器，其係包 含表面部及自前述表面部邊緣略為垂直方向突出形成 之壁部；具備有一環狀襯墊，其係具有一可收納前述第 一金屬容器之壁部之前端部之全部圓周之狹缝，且其底 面部及外侧面部分別覆蓋於前述第二金屬容器之表面 部及壁部；前述第一金屬容器之壁部之前端部，係被向 内侧以純角折曲，以使前述前端部將前述概塾向前述第 二金屬容器侧壓入；於覆蓋前述第二金屬容器之表面部 之前述襯墊之底面部，構成有一與前述表面部之圓周同 心之環狀之第一溝槽。 【實施方式】 (第一實施例） 以下，說明本發明之實施例。第一圖係為本發明第 一實施例之雙層電極電容之立體圖。雙層電極電容 (Electric Double Layer Capacitor，EDLC)，係利用於一 固體及一電解質之交界面形成之雙層電極儲存電氣能 量，是屬於電氣化學電池的一種。 如第一圖所示，第一實施例之雙層電極電容，整體 為一鈕扣的形狀，且其上下面分別為正負極。雙層電極 電容1之外型係為上部金屬容器3及下部金屬容器4組 合而成。上部金屬容器3係具有圓盤部3b，及由此圓盤 部3b之邊緣向下方略垂直突出形成之壁部3a，前述上 部金屬容器3之整體形狀為一向下的盥狀。再者，下部 金屬容器係具有較上部金屬容器3之圓盤部3b大一圈 的圓盤部4b，及自前述圓盤部4b的邊緣向上方略垂直 突出之壁部4a，前述下部金屬容器4之整體形狀為一向 7 200832784 上之盥狀。 第二圖表示雙層電極電容1之斷面圖。如第二圖所 示，上部金屬容器3及下部金屬容器4所圍繞的空間 中，收納了電極和隔離膜等。較具體而言，上部金屬容 器3及下部金屬容器4之圓盤部3b、4b之内侧面分別 固定了一對的電極5、6。而且，於電極5及電極6之間 設置了隔離膜7，其係為了防止因為多數電極相接觸而 有短路現象。然而，圖中雖未表示，下部電極6之半徑 與上部金屬容器3之圓盤部3b之半徑雖大約相同，但 ⑩ 係較小構成而成。接著，上部金屬容器3之壁部3a之半 徑係越往下半徑越大構成而成。為此，於下部電極6之 上方平面之同高度中，上部金屬容器3之壁部3a之内徑 較下部電極6之外徑充份大，使上部金屬容器3與下部 電極6不互相接觸。 上部電極5及下部電極6分別含浸電解質。如此， 藉由含有電解質之一對的電極以隔離膜7為媒介而呈對 向之構造，可實現雙重電極電容之功能。於上部金屬容 φ 器3及下部金屬容器4之間嵌入有襯墊8。前述之襯墊 8係由聚丙烯及聚乙烯等樹脂構成而成。襯墊8為了防 止因為上部金屬容器3及下部金屬容器4直接接觸造成 的短路，且為了防止電解質漏出，而塞置於金屬容器3、 4間之空隙間。 如第二圖所示，襯墊8係圓環狀之部材，自其上方 平面向下方延伸而成之狹缝8a係構成於圓環寬方向之 中央部。藉由襯墊8之外表面與下部金屬容器4之壁部 4a之内表面接觸，且於襯墊8之狹缝8a中嵌入上部金 屬容器3之壁部3a，使下部金屬容器4之壁部4a之内 8 200832784 表面與上部金屬容器3之壁部3a之外表面藉由襯墊8 封止住。藉此防止住電解質漏出且防止上部金屬容器3 與下部金屬容器4之接觸。接著，為了使襯墊8不脫離 於下部金屬容器4，於上部金屬容器3裝配於下部金屬 容器4後，下部金屬容器4之壁部4a之上端向下部金屬 容器4之圓盤部4b之半徑方向内侧折曲並壓合住容器。 再者，藉由下部金屬容器4之壁部4a之上端折曲， 上部金屬容器3因為前述金屬容器4之壁部4a而向下方 押入。藉此，襯墊8位於狹缝8a之位置，且被上部金屬 容器3之壁部3a之前端及下部金屬容器4之圓盤部4b 所夾住，並和兩者緊密接合。其結果，可防止電解質漏 出。再者，藉由壓合下部金屬容器4之壁部4a，於下部 金屬容器4之壁部4之上端位置，襯墊8被壓迫於下部 金屬容器4之壁部4a與上部金屬容器3之壁部3a之間。 第一實施例中，為了襯墊8與下部金屬容器4之圓 盤部4b間的密接性高，使得襯墊8之底部平面構成有 突出部。以下，針對其構造作說明。第三A圖及第三B 圖，係第二圖之斷面圖中，襯墊8及下部金屬容器4之 圓盤部相接觸區域之放大斷面圖。然而，第三A圖係下 部金屬容器4之壁部4a被壓合後之狀態，第三B圖係 表示下部金屬容器4之壁部4a被壓合後之狀態。 如第三A圖所示，襯墊8之底面8b中，構成有兩 條與襯墊8之外周面約同心之圓環狀的突出部8c。圖中 雖未表示，下部金屬容器4之壁部4a被壓合前，突出部 8c之前端與下部金屬容器4之圓盤部4b的上方平面輕 微接觸。 若前述型態之下部金屬4之壁部4 a上端向内側折曲 9 200832784A small electro-chemical battery such as a lithium battery or a double-layer electric capacitor is widely used as an auxiliary power source for portable electronic products such as a mobile phone or a notebook personal computer, or is used as a main power source. As described in the patent document, such an electrochemical battery is a combination of two dome-shaped metal containers composed of a wall portion and a wall portion extending slightly perpendicular to the edge of the face portion via a ring-shaped spacer. The whole is widely used as a button-shaped electrochemical battery. The above-mentioned gasket is composed of an insulating material such as rubber, and each of the metal containers has the function of an electrode terminal of an electrochemical battery by combining the metal containers via the aforementioned gasket. In the electro-chemical battery disclosed in the patent document of the next month, the metal container on the upper side is smaller than the metal container on the lower side. Further, a groove is formed in the gasket, and the front end of the wall portion of the metal container on the upper side of the wall portion of the lower metal container is inserted into the gasket to be formed in the center of the sawing direction. ditch. Then, the upper end of the wall portion is bent inward by the metal portion of the lower side, and the metal container of the upper side is pushed into the lower side without the lining of the lining, and the present is a crying. The whole process is tightly closed and closed, and the two metal or the package can be used in the composition of the metal container or the liner. The thickness of the metal container on the upper side is σ 4 and g. The jagged. Because the aforementioned deviation is not the same as the back of the 200832784, even if the gasket is not completely pressed, one of the aforementioned portions can leak out of the electrolyte. . The knife also has a ceiling material composed of the asphalt coated on the surface of the liner, and the front panel is separated from the unfinished gasket and the metal container 11 to prevent the electrolytic material from being placed in the shed. The thickness of the material coating is not uniform, and there is a problem that the heat of the top is easy to leak out when the heat is increased. When the test or the actual dressing is made, the ceiling material can be uniformly (four) = in order to make the lining, due to the above-mentioned two-layer electrode capacitance dissolved in the lining technique:, in the middle, the dipping. For this reason, the material of the prior agent (i.e., the higher viscosity) is also coated with a limited amount of dissolution. [Invention patent document] Japanese material is necessary. The present invention is characterized in that: the first embodiment of the present invention is characterized in that: the first milk chemical battery is provided, and the surface portion and the surface portion of the surface portion have a surface portion; The annular lining art, the wall formed by the straight sigma 1 is a front end of the wall of the container, but has a space for covering the first gold and the outer surface, respectively, and covering the bottom of the wall. The surface portion of the first-Gimpo-metal container is bent at a pure angle so that the front end portion of the crucible is pressed toward the inner container side; and the second gold ring projection portion is applied to the second gold ring. According to another embodiment of the present invention, there is provided an electro-chemical battery, characterized in that the first and second metal containers are provided with a surface portion and a self-contained portion. a wall portion protruded from the edge of the surface portion in a slightly vertical direction; and an annular gasket having a slit for receiving the entire circumference of the front end portion of the wall portion of the first metal container, and the bottom portion and the outer portion thereof The side portions respectively cover the surface portion and the wall portion of the second metal container; the front end portion of the wall portion of the first metal container is bent at a pure angle toward the inner side so that the front end portion brings the aforementioned outline to the second portion The metal container side is press-fitted; and a bottom surface of the spacer covering the surface portion of the second metal container is formed with an annular first groove concentric with the circumference of the surface portion. [Embodiment] (First Embodiment) Hereinafter, an embodiment of the present invention will be described. The first figure is a perspective view of a double-layer electrode capacitor according to a first embodiment of the present invention. Electric Double Layer Capacitor (EDLC) is a type of electrochemical battery used to store electrical energy in a two-layer electrode formed by the interface between a solid and an electrolyte. As shown in the first figure, the double-layer electrode capacitor of the first embodiment has a shape of a button as a whole, and the upper and lower sides thereof are positive and negative electrodes, respectively. The double-layer electrode capacitor 1 is a combination of an upper metal container 3 and a lower metal container 4. The upper metal container 3 has a disk portion 3b, and a wall portion 3a formed by the edge of the disk portion 3b projecting vertically downward, and the overall shape of the upper metal container 3 is a downwardly curved shape. Further, the lower metal container has a disk portion 4b which is slightly larger than the disk portion 3b of the upper metal container 3, and a wall portion 4a which protrudes slightly upward from the edge of the disk portion 4b, and the lower metal container 4 The overall shape is a shape on the 7 200832784. The second figure shows a cross-sectional view of the double layer electrode capacitor 1. As shown in the second figure, an electrode, a separator, and the like are housed in a space surrounded by the upper metal container 3 and the lower metal container 4. More specifically, the pair of electrodes 5, 6 are fixed to the inner side surfaces of the upper metal container 3 and the disk portions 3b, 4b of the lower metal container 4, respectively. Further, a separator 7 is provided between the electrode 5 and the electrode 6 in order to prevent a short circuit due to contact of a plurality of electrodes. However, although not shown in the drawing, the radius of the lower electrode 6 is approximately the same as the radius of the disk portion 3b of the upper metal container 3, but the ten-layer structure is small. Next, the radius of the wall portion 3a of the upper metal container 3 is formed as the radius of the lower portion becomes larger. For this reason, in the same height of the upper plane of the lower electrode 6, the inner diameter of the wall portion 3a of the upper metal container 3 is sufficiently larger than the outer diameter of the lower electrode 6, so that the upper metal container 3 and the lower electrode 6 do not contact each other. The upper electrode 5 and the lower electrode 6 are each impregnated with an electrolyte. Thus, the function of the double electrode capacitance can be realized by the structure in which the electrode containing one pair of the electrolyte is opposed to the separator 7 as a medium. A gasket 8 is embedded between the upper metal container φ 3 and the lower metal container 4. The spacer 8 described above is made of a resin such as polypropylene or polyethylene. The gasket 8 is prevented from being short-circuited by direct contact between the upper metal container 3 and the lower metal container 4, and is interposed between the gaps of the metal containers 3, 4 in order to prevent electrolyte leakage. As shown in Fig. 2, the spacer 8 is an annular member, and the slit 8a extending downward from the upper plane thereof is formed at the center portion in the width direction of the ring. The outer surface of the spacer 8 is in contact with the inner surface of the wall portion 4a of the lower metal container 4, and the wall portion 3a of the upper metal container 3 is fitted into the slit 8a of the spacer 8 so that the wall portion of the lower metal container 4 is formed. Within 4a 8 200832784 The outer surface of the surface and the wall portion 3a of the upper metal container 3 is sealed by the gasket 8. Thereby, the electrolyte is prevented from leaking out and the contact of the upper metal container 3 with the lower metal container 4 is prevented. Next, in order to prevent the spacer 8 from coming off the lower metal container 4, after the upper metal container 3 is attached to the lower metal container 4, the upper end of the wall portion 4a of the lower metal container 4 has a radius of the disk portion 4b of the lower metal container 4 Flex the inner side of the direction and press the container. Further, the upper end of the wall portion 4a of the lower metal container 4 is bent, and the upper metal container 3 is pushed downward by the wall portion 4a of the metal container 4. Thereby, the spacer 8 is located at the position of the slit 8a, and is sandwiched by the front end of the wall portion 3a of the upper metal container 3 and the disc portion 4b of the lower metal container 4, and is tightly joined to both. As a result, leakage of the electrolyte can be prevented. Further, by pressing the wall portion 4a of the lower metal container 4, the spacer 8 is pressed against the wall portion 4a of the lower metal container 4 and the wall of the upper metal container 3 at the upper end position of the wall portion 4 of the lower metal container 4. Between the parts 3a. In the first embodiment, in order to make the adhesion between the spacer 8 and the disk portion 4b of the lower metal container 4 high, the bottom plane of the spacer 8 is formed with a projection. Hereinafter, the configuration will be described. Fig. 3A and Fig. 3B are enlarged cross-sectional views showing the contact area between the spacer 8 and the disk portion of the lower metal container 4 in the cross-sectional view of Fig. 2. However, the third A is a state in which the wall portion 4a of the lower metal container 4 is pressed, and the third B is a state in which the wall portion 4a of the lower metal container 4 is pressed. As shown in Fig. 3A, the bottom surface 8b of the spacer 8 is formed with two annular projections 8c which are concentric with the outer peripheral surface of the spacer 8. Although not shown, before the wall portion 4a of the lower metal container 4 is pressed, the front end of the protruding portion 8c is in light contact with the upper plane of the disk portion 4b of the lower metal container 4. If the upper end of the wall portion 4 a of the lower portion metal 4 of the aforementioned type is bent inwardly 9 200832784
壓合時’上部金屬容器3之壁部3a係藉由襯墊8之上端 而被往下方塞入。^而’如第三B圖所表示，再將壁 如於其端部向外側扳回，藉此，於壁部如之上方平面 形成有與下部金屬容器之圓盤部4b略為平行之位差部 3d :再者，壁部3a之前端部3c上也形成有與下部金屬 之圓盤部4b略平行之平面。本發明之第—實施例 中’上部金屬容器3係藉由前述位差部3d被往下方夷 〇。亦即，本發明之第一實施例中，藉由於壁部如上‘ 置f下部金屬容器4之圓盤部4b平行之上方平面之位 差。卩3d，可施加一與位差部％之上方平面垂直之分力’ 施加—有效率地將上部金屬容器3壓近下部金屬 =2力。因此’上部金屬容器3之壁部3a與下部金 塾而容易卡止。接者，藉由於 屬；器4之圓盤部#略為平行之平面4作為:壓= 之力而有效率地傳達至施與上之二 屬容器3之壁部前=3襯f精。再者’因為上部金 地施加壓迫力於突出㈣&之任—部’可有效率 向下部全^订壓合時’上部金屬容器3之壁部3a 同r 口Pi屬谷态4之圓盤都儿两、 置，襯墊8被上部金屬容哭=认且於狹缝8&的位 金屬容器4之圓盤部^ ±之壁部的前端部乂與下部 因壓迫而集中载重，且二亚壓迫。此時，突出部以 盤部4b緊穷接人受形後與下部金屬容器4之圓 異去士 確保良好的密封性。 务明弟—實施例中，雙層電極電容1之外 200832784 徑（下部金屬容器4之圓盤部4b之半徑）為4.75mm，高 為1.43mm。如此尺寸之雙層電極電容中，兩條突出部 8c之高為2〇#111〜2〇〇0111，特別是8〇0111左右時，能有最 好的密封效果。 再者，如第三A圖所示，上部金屬容器3之壁部3a 之前端部3c與下部金屬容器4之圓盤部4b所夾之襯墊 8的部份，當其厚度為T、寬為W時，所希望之厚度T 為寬W之75%以上。如此，藉由給予前端部3c與圓盤 部4b間夾持之襯墊部分一定的厚度，則相對自上部金 屬容器3之前端部3c產生之壓迫力，前述襯墊部分較不 易產生撓曲。因此，自前端部3c產生之壓迫力，於前述 襯墊部分不會因撓曲而緩和，而能夠傳達至下部金屬容 器4之圓盤部與前述襯墊部分之接觸部，即突出部8c。 因此，較大的載重施加於突出部8c，則突出部8c與下 部金屬容器4之圓盤部4b間可得到較高的密封性。 如前所述，本實施例中，於以下部金屬容器4之圓 盤部4b相接觸之襯墊8之表面，因形成有與襯墊8之 外表面約同圓心之圓環狀之突出部8c，可提高襯墊8之 底面8c與圓盤部4b間之密接性。同樣地，與上部金屬 容器3之壁部3a之前端部3c相接觸之襯墊8之表面上， 藉由形成與襯墊8之外圓周約同圓心之圓環狀突出部 8u，也可提高襯墊8與上部金屬容器3之前端部3c的密 接性。第三C圖係表示再設置如此之突出部8u之第一 實施例之變形例。 第三C圖係表示壓合前之狀態，係與第三A圖同樣 之擴大斷面圖。第三C圖之變形例中，於襯墊8行成之 狹缝8a的底面約中央的位置，形成一條與襯墊8之外圓 11 200832784 周約同圓心之圓環狀的突出部8u。本變形例中，雙層電 極電容1之外徑（下部金屬容器4之圓盤部4b之半徑） 也約4.75mm、高為1.43mm。如此尺寸的雙層電極電容 中，一條突出部之高為20μιη〜200μιη，特別是80μηι 左右時，能有最好的密封效果。然而，擴及狹缝8a之底 面全部可形成一條之突出部8u，但行成多數的小突出部 8u也可以。 再者，第一實施例中，概墊8之底面雖形成有2條 突出部，但形成一條之突出部亦為本發明之範圍所包 含。以下說明本發明之第二實施例係具備如前述形狀之 襯墊之雙層電極電容。 (第二實施例） 接著，參照第四A圖及第四B圖，說明本發明之第 二實施例。第二實施例之雙層電極電容只與第一實施例 於襯墊8之構成有所不同。因此，第二實施例中，只說 明與第一實施例不同處而省略與第一實施例共通之構 成部分。再者，第二實施例的說明中，於共通或對應之 構成部分，使用與第一實施例同樣或類似的表示符號。 本發明的第二實施例中，擴及襯墊8的底面之大約 全部的表面，構成一突出部8d，其係由一微缓曲面所成 之斷面所構成。如後所述，前述突出部8d也與第一實 施例之突出部8c —樣可發揮襯墊8與下部金屬容器4 之圓盤部4b間的密接性。以下，說明前述之構造。第 四A圖及第四B圖係為襯墊8與下部金屬容器4之圓盤 部與其相接合之區域附近之放大表示斷面圖。第四A圖 係為金屬容器4之壁部4a壓合前之狀態表示圖，第四B 圖係為下部金屬容器4之壁部4a壓合後之狀態表示圖。 12 200832784 全二之底…大約 今办 卜j i屬谷器4之壁部4a壓合 m8d之前端係為與下部金屬容器4之圓盤部 =上方平面略為接觸之狀態。然而，突出部8d =係位於上述金屬容器3之壁部3a之At the time of press-fitting, the wall portion 3a of the upper metal container 3 is inserted downward by the upper end of the spacer 8. And as shown in FIG. B, the wall is pulled back outwardly as its end portion, whereby a plane slightly parallel to the disk portion 4b of the lower metal container is formed on the wall portion as above. Part 3d: Further, a plane slightly parallel to the lower metal disc portion 4b is also formed on the front end portion 3c of the wall portion 3a. In the first embodiment of the present invention, the upper metal container 3 is slid downward by the aforementioned difference portion 3d. That is, in the first embodiment of the present invention, the position difference of the upper plane parallel to the disk portion 4b of the lower metal container 4 is set by the wall portion as described above.卩3d, a component force perpendicular to the upper plane of the disparity portion % can be applied ‘ applied-effectively press the upper metal container 3 closer to the lower metal=2 force. Therefore, the wall portion 3a of the upper metal container 3 and the lower metal piece are easily locked. The receiver is efficiently conveyed to the wall portion of the upper container 3 by the force of the pressure = the plane 4 of the disc portion # of the genus 4; In addition, because the upper part of the gold ground exerts a pressing force on the protrusion (four) & the part - the part can be efficiently pressed to the lower part, the wall portion 3a of the upper metal container 3 and the disk of the r port In the case of two, the pad 8 is held by the upper metal, and the front end portion of the wall portion of the disk portion of the metal container 4 of the slit 8& oppression. At this time, the protruding portion is closely spaced from the lower metal container 4 by the disk portion 4b to ensure good sealing. In the embodiment, in addition to the double-layer electrode capacitor 1, the diameter of the 200832784 (the radius of the disk portion 4b of the lower metal container 4) is 4.75 mm and the height is 1.43 mm. In the double-layer electrode capacitor of such a size, the height of the two protruding portions 8c is 2〇#111~2〇〇0111, and particularly when it is about 8〇0111, the sealing effect is best. Further, as shown in FIG. 3A, the portion of the liner 8 between the front end portion 3c of the wall portion 3a of the upper metal container 3 and the disc portion 4b of the lower metal container 4 is T and Width. In the case of W, the desired thickness T is 75% or more of the width W. As described above, by imparting a constant thickness to the pad portion sandwiched between the tip end portion 3c and the disk portion 4b, the pad portion is less likely to be deflected with respect to the pressing force generated from the front end portion 3c of the upper metal container 3. Therefore, the pressing force generated from the tip end portion 3c can be transmitted to the contact portion between the disk portion of the lower metal container 4 and the pad portion, that is, the protruding portion 8c, without being relieved by the deflection of the pad portion. Therefore, when a large load is applied to the protruding portion 8c, a high sealing property can be obtained between the protruding portion 8c and the disk portion 4b of the lower metal container 4. As described above, in the present embodiment, the surface of the spacer 8 which is in contact with the disk portion 4b of the lower metal container 4 is formed with an annular projection which is approximately the same center as the outer surface of the spacer 8. 8c, the adhesion between the bottom surface 8c of the gasket 8 and the disk portion 4b can be improved. Similarly, the surface of the spacer 8 which is in contact with the front end portion 3c of the wall portion 3a of the upper metal container 3 can be improved by forming the annular projection 8u which is approximately the same center as the outer circumference of the spacer 8. The adhesion of the gasket 8 to the front end portion 3c of the upper metal container 3 is good. The third C diagram shows a modification of the first embodiment in which such a projection 8u is further provided. The third C diagram shows the state before the press-fitting, and is an enlarged cross-sectional view similar to that of the third A diagram. In the modification of the third C diagram, an annular projection 8u which is approximately the same as the circumference of the outer circumference 11 200832784 of the spacer 8 is formed at a position approximately at the center of the bottom surface of the slit 8a. In the present modification, the outer diameter of the double-layered electrode capacitor 1 (the radius of the disk portion 4b of the lower metal container 4) is also about 4.75 mm and the height is 1.43 mm. In the double-layer electrode capacitor of such a size, the height of one protrusion is 20 μm to 200 μm, especially when it is about 80 μm, which has the best sealing effect. However, all of the bottom surfaces of the slits 8a may be formed with one protruding portion 8u, but a plurality of small protruding portions 8u may be formed. Further, in the first embodiment, although the bottom surface of the cushion 8 is formed with two projections, the projection formed by one is also included in the scope of the invention. Hereinafter, a second embodiment of the present invention will be described as a double-layer electrode capacitor having a spacer of the above-described shape. (Second Embodiment) Next, a second embodiment of the present invention will be described with reference to Figs. 4A and 4B. The double-layer electrode capacitance of the second embodiment differs only from the configuration of the spacer 8 of the first embodiment. Therefore, in the second embodiment, only the differences from the first embodiment will be described, and the constituents common to the first embodiment will be omitted. Further, in the description of the second embodiment, the same or similar reference numerals as in the first embodiment are used in the common or corresponding constituent parts. In the second embodiment of the present invention, about the entire surface of the bottom surface of the spacer 8 is formed to constitute a projection 8d which is formed by a section formed by a slightly gentle curved surface. As will be described later, the protruding portion 8d also exhibits the adhesion between the spacer 8 and the disk portion 4b of the lower metal container 4 as in the protruding portion 8c of the first embodiment. Hereinafter, the above configuration will be described. Figs. 4A and 4B are enlarged cross-sectional views showing the vicinity of a region where the pad 8 and the disk portion of the lower metal container 4 are joined. Fig. 4A is a view showing a state before the wall portion 4a of the metal container 4 is pressed, and Fig. 4B is a view showing a state after the wall portion 4a of the lower metal container 4 is pressed. 12 200832784 The bottom of the whole two...About the present, the wall portion 4a of the bar 4 is pressed. The front end of the m8d is in a state of being slightly in contact with the disk portion of the lower metal container 4 = the upper plane. However, the projection 8d is located in the wall portion 3a of the metal container 3 described above.
自前述狀態下若將下部金屬容器 = 則上部金屬容器3之壁部3a向;部金屬J :二，圓盤部4b壓入。藉此，如第四B圖所示，襯墊8 ’、；&縫8a之位置且被夾置及壓迫於上部金屬容器3 之壁部3a之前端部3c與下部金屬容器4之圓盤部仆 之間。此枯，突出部8d因壓迫而集中载重，且大變形 後與下部金屬容H 4之圓盤部4b緊密接合，可確保良 好的密封性。 一再者，本發明之第二實施例中，雙層電極電容1之 :卜徑(下部金屬容器4之圓盤部4b之半徑)為4 75麵、 =為1.43mm。此尺寸之雙層電極電容中，突出部⑸之 ί為2〇μΠ1〜2〇〇μηι，特別是8〇μιη左右時，能有最好的 密封效果。 (弟二實施例） 一春，著，參考第五Α圖及第五β圖，說明本發明之第 貝施例弟二實施例之雙層電極電容也與第一實施例 襯墊8之構成上有所不同。因此，針對第三實施例， 只說明其與第—實施例不同點，而省略其與第一實施例 相同之構成處。再者，第三實施例的說明中，於共通或 對應之構成部分，❹與第—實施_樣賴似的表示 13 200832784 符號。 本發明之第三實施例中，為提高襯墊8與下部金屬 容器4之圓盤部41>間之密接性，而於襯墊8之底面與 狹缝8a之底部分別形成溝槽。以下，說明前述構造。第 五A圖及第五B圖係為襯墊8與下部金屬容器4之圓盤 部相結合區域附近之放大斷面表示圖。第五A圖係為金 屬容器4之壁部4a壓合前之狀態表示圖，而第五B圖係 為下部金屬容器4之壁部4a壓合後之狀態表示圖。 如第五A圖所表示，於襯墊8之底面8b上，形成 一與襯墊8之外圓周約同圓心之圓環狀溝槽8e。接著， 於溝槽8e之寬方向中央部附近設置溝槽8f。如圖所示， 下部金屬容器4之壁部4a壓合前，溝槽8e之邊緣部係 與下部金屬容器4之圓盤部4b之上方表面略為接觸。 再者，於襯墊8之狹缝8a之中央部位也形成一與襯 墊8之外圓周約同圓心之圓環狀溝槽8g。前述溝槽8g， 係如第五A圖所示，上部金屬容器3之壁部3a被收納 時，壁部3a之前端部3c係與溝槽8g相接合。 自前述狀態，若下部金屬容器4之壁部4a之上端向 内侧折曲壓合時，上部金屬容器3巷下部金屬容器4之 圓盤部4b壓入，如第五B圖所示，溝槽8g被壓迫而使 其中之空氣被取出。接著，藉由襯墊8之恢復力，因為 襯墊8會恢復原本的氣壓，使得溝槽中之氣壓較低而具 有一種吸盤之功能。亦即，於前述部位襯墊8係被上部 金屬容器3之壁部3a之前端部3c強力吸附。因此，可 增大前端部3c與狹缝8a之底部間之密接力，且使上部 金屬3與襯墊8間得到良好的密封性。 同樣地，於下部金屬容器4之圓盤部41>侧間，溝 14 200832784 槽8e及8f係具有一種吸盤的功能，且藉由前述之功能， 概塾8係可強力吸附住下部金屬容器4之圓盤部4b。藉 此’上部金屬容器3及襯墊8間可得到良好的密封性。 再者’本發明之第三實施例中，襯墊8之底部8b侧之 溝槽8e及8f支兩段構造，第一段之溝槽8e雖可與下部 金屬容器4之圓盤部4b間緊密接合，第二段之溝槽8f 也可發揮吸盤的效果。 再者，本發明之第三實施例中，雙層電極電容1之 1徑（下部金屬容器4之圓盤部4b之半徑）為4.75mm， 南為1.43mm。如此尺寸之雙層電極電容中，深度為 20〜20(^m，特別是若於狹縫8a的中部行成8〇μπι左右 的溝槽8g，襯墊8與上部金屬容器3間有最好的密封效 果。再者，襯墊8之底面8b上設置的溝槽8e、8f之深 度為20〜200_且寬度為300〜500μιη，特別是若溝槽8e 之深度為50μιη、寬度為400μιη左右，且前述溝槽^之 大約中央部位設置深度為5〇μιη左右的溝槽計時，襯墊 8與下部金屬容器4間有最好的密封效果。 再者，前述之實施例中，襯墊8雖適用於雙層電極 電容，類似型態的其它種化學電池，例如一次及二次電 池等也適用於具備前述種類之突出部或溝槽之襯墊。电 办再者，前述之實施例中，襯墊8之底面8b雖形成 有突出部或溝槽，其他的部位，例如狹縫8a之中央部等 也可具有相同的突出部構造。 再者，前述之實施例中，電氣化學電池(雙層電極電 容)雖被以錢帶狀使用之，但並不限定於此種形狀，其他 的形狀，例如角板狀之電氣化學電池，也可採用具^同 樣的突出部之概墊。 15 200832784 例之特idi:明之實施例。前述為止說明之實施 第—i?明之實施例之電氣化學電池之特徵為:具備有 邊緣ir垂金直^ 塾，其係具有一可收壁部；具備有一環狀襯 部之全部®周之狹缝，金屬，之壁部之前端 於前述第二金屬容器之表面外 器之壁邱夕乂胂邱^丨及壁部，則述弟一金屬容 ㈣部將前i襯藝向:述二，2 c、之表面部之前述:;之底面部 塾之底力之，:出：。藉由於襯 的接觸部二高第:金屬容器之面部間 可得到良好密封性能之電氣3=現不㈣㈣劑也 襯墊之突出部之最少— 容器之壁部的前端部與第二=：；!可配置於第一金屬 述之配置，襯塾的撓曲較少之面部之間。如前 返力於;出部，因此可C向下㈣ 襯墊的一部份係被第— *玎庄 及第二金屬容器的表面部所^屬容11之壁部的前端部 τ適宜為寬度W的尺寸之乃，則述之一部分之高度 器之壁部的前端部與第二泰^以上。如前述，若金屬容 之厚度為一定以上時，前;容器之面部間夾置部份 有效率地傳達向下的壓迫力於不易發生撓曲，且可 的密封性。 7於犬出部，因此可得到較高 200832784When the lower metal container is in the above state, the wall portion 3a of the upper metal container 3 is pressed toward the portion metal J: two, and the disk portion 4b is pressed. Thereby, as shown in FIG. 4B, the position of the spacer 8', the & slit 8a is sandwiched and pressed against the front end portion 3c of the upper metal container 3 and the lower metal container 4 Between the servants. As a result, the protruding portion 8d concentrates the load due to the pressing, and after the large deformation, it is tightly joined to the disk portion 4b of the lower metal container H4, thereby ensuring good sealing property. Further, in the second embodiment of the present invention, the diameter of the double-layer electrode capacitor 1 (the radius of the disk portion 4b of the lower metal container 4) is 4,75 faces, and = 1.43 mm. In the double-layer electrode capacitor of this size, the protrusion (5) is 2〇μΠ1~2〇〇μηι, especially when it is about 8〇μηη, which has the best sealing effect. (Second embodiment) In the spring, with reference to the fifth and fifth β diagrams, the double-layer electrode capacitance of the second embodiment of the present invention and the configuration of the spacer 8 of the first embodiment will be described. It is different. Therefore, with respect to the third embodiment, only the differences from the first embodiment will be described, and the same configurations as those of the first embodiment will be omitted. Further, in the description of the third embodiment, the common or corresponding constituent parts are denoted by the same expression as the first embodiment. In the third embodiment of the present invention, in order to improve the adhesion between the spacer 8 and the disk portion 41 of the lower metal container 4, grooves are formed in the bottom surface of the spacer 8 and the bottom portion of the slit 8a, respectively. Hereinafter, the above configuration will be described. Figs. 5A and 5B are enlarged cross-sectional views showing the vicinity of a region where the pad 8 and the disk portion of the lower metal container 4 are joined. Fig. 5A is a view showing a state before the wall portion 4a of the metal container 4 is pressed, and Fig. 5B is a view showing a state after the wall portion 4a of the lower metal container 4 is pressed. As shown in Fig. A, on the bottom surface 8b of the spacer 8, an annular groove 8e which is approximately the same center as the outer circumference of the spacer 8 is formed. Next, a groove 8f is provided in the vicinity of the central portion in the width direction of the groove 8e. As shown in the figure, before the wall portion 4a of the lower metal container 4 is pressed, the edge portion of the groove 8e is slightly in contact with the upper surface of the disk portion 4b of the lower metal container 4. Further, an annular groove 8g which is approximately the same as the outer circumference of the pad 8 is formed in the central portion of the slit 8a of the spacer 8. As shown in Fig. 5A, the groove 8g is joined to the groove 8g at the front end portion 3c of the wall portion 3a when the wall portion 3a of the upper metal container 3 is housed. In the above state, when the upper end of the wall portion 4a of the lower metal container 4 is bent inwardly, the disk portion 4b of the metal container 4 at the lower portion of the upper metal container 3 is pressed in, as shown in FIG. 8g is pressed to allow the air to be taken out. Then, by the restoring force of the spacer 8, since the spacer 8 restores the original air pressure, the air pressure in the groove is low and has a function as a suction cup. In other words, the spacer 8 is strongly adsorbed by the front end portion 3c of the wall portion 3a of the upper metal container 3. Therefore, the adhesion between the tip end portion 3c and the bottom of the slit 8a can be increased, and the sealing property between the upper metal 3 and the gasket 8 can be improved. Similarly, between the side of the disc portion 41 of the lower metal container 4, the groove 14 200832784 grooves 8e and 8f have a function of a suction cup, and by the foregoing functions, the 8 series can strongly adsorb the lower metal container 4 The disc portion 4b. By this, a good sealing property can be obtained between the upper metal container 3 and the gasket 8. Further, in the third embodiment of the present invention, the grooves 8e and 8f on the bottom 8b side of the spacer 8 are configured in two stages, and the groove 8e of the first stage can be interposed between the disk portion 4b of the lower metal container 4. Tightly joined, the groove 8f of the second stage can also exert the effect of the suction cup. Further, in the third embodiment of the present invention, the diameter of the double-layer electrode capacitor 1 (the radius of the disk portion 4b of the lower metal container 4) is 4.75 mm, and the south is 1.43 mm. In the double-layer electrode capacitor of such a size, the depth is 20 to 20 (^m, especially if the groove 8g of about 8 〇μπι is formed in the middle of the slit 8a, the liner 8 and the upper metal container 3 are the best. Further, the grooves 8e and 8f provided on the bottom surface 8b of the spacer 8 have a depth of 20 to 200 mm and a width of 300 to 500 μm, particularly if the depth of the groove 8e is 50 μm and the width is about 400 μm. And a groove having a depth of about 5 μm is disposed at a central portion of the groove, and the gasket 8 and the lower metal container 4 have the best sealing effect. Further, in the foregoing embodiment, the gasket 8 Although suitable for double-layer electrode capacitors, other types of chemical batteries of similar type, such as primary and secondary batteries, are also suitable for pads having protrusions or grooves of the aforementioned kind. Further, in the foregoing embodiments, The bottom surface 8b of the spacer 8 is formed with a protruding portion or a groove, and other portions, for example, the central portion of the slit 8a, may have the same protruding portion structure. Further, in the foregoing embodiment, the electrochemical battery ( Double-layer electrode capacitor) is used in the form of a money ribbon However, it is not limited to such a shape, and other shapes, such as a gusset-shaped electro-chemical battery, may be a pad having the same protruding portion. 15 200832784 Example idi: Example of the description. The electrochemical battery of the embodiment of the present invention is characterized in that it has an edge ir sag, which has a retractable wall portion, and has a slit of all the circumferences of the annular lining. The metal, the wall end of the front end of the surface of the second metal container, the surface of the outer wall of the second metal container, Qiu Xiqiu Qiu and the wall, the younger brother of the metal (four) part of the front i lining art: 2, 2 c The surface of the surface: the bottom of the bottom part of the bottom:: out: by the contact part of the lining of the second high: the metal container between the face can be well sealed electrical 3 = now (4) (four) agent also lining The least of the protrusions of the pad - the front end portion of the wall portion of the container and the second =:;! can be disposed between the faces of the first metal, and the portion of the lining that is less deflected. Part, so C can be down (four) part of the padding is the first - * 玎 and second metal containers The front end portion τ of the wall portion of the face portion 11 is preferably the size of the width W, and the front end portion of the wall portion of the height portion of the one portion is equal to or greater than the second portion. As described above, if the thickness of the metal portion is When it is more than a certain amount, the front part of the container can effectively convey the downward pressing force to the extent that the bending force is not easy to occur, and the sealing property is good. 7 In the dog out, it can be higher 200832784
如前述之構成，可多段 可實現較高的密封性能 第二金屬容器之表 面，如前述之配置，於襯墊 中’可延長襯墊的壽命。 ，亦可配置於第一金屬容器之 &器之表面部之間。如前述之 _ 一金屬容器之壁布之前端部 ，可有效率地傳達至突出部。 爭、备ΐ出ί之向度適宜為二0*1111〜200*1111，若為8〇μιη則 L且若σ又疋突出部之高度為前述之範圍，特別地可 得到良好的密封性。 — 第一突出部亦可形成於襯墊之狹缝之底部。藉此， 第一金屬容器之壁部之前端部與襯墊之狹縫之底部良 好地密接住，可得到較高的密封性。 概墊之犬出部於裝配前係為圓弧狀之斷面形狀。藉 t圓弧狀之斷面形狀，襯墊的形狀就算有稍微的歪斜， 突出部與第二金屬容器之面部間的接觸狀態也不會有 大變形’因此密封的性能不會明顯的減低。因此，襯墊 的尺寸的谷許誤差大，可減低襯塾的製造成本。再者， 組裝時趁墊就算有稍微的歪斜，密封的性能也不會有明 顯地改變。因此，可提高電氣化學電池的組裝之良率。 本發明之實施例之電氣化學電池係具備有：兩個分 極性(polarization)電極，其係兩個分極性電極，其係含 浸電解質，且分別密接於前述第一及第二金屬容器之内 侧表面；一隔離膜，其係配置於前述兩個分極性電極間 17 200832784 且可防止短路。藉由此構造，可實 層電極電容。 Λ 封性能之雙 本發明之另一實施例，提供一 特徵2 :具備有第—及第二金屬容器，二係f 及自所述表面部邊緣略為垂直方向 ς丨3表面部 備有-環狀襯墊’其係具有—可收納前部2 之壁部之前端部之全部圓周之狹縫麻*屬容器 面部分別覆蓋於前述第二金屬容哭夕底面部及外侧 述第一金屬容器、之壁部之前端部，^面邛及壁部；前 曲，以使前述前端部將前述轉_^調以鈍角折 壓入；於覆蓋前述第二金屬容器之处，一金屬容器侧 底面部，構成有一與前述表面部之^則述襯墊之 -溝槽。藉由於襯墊之底面形成環環狀之第 具有吸盤之效果，可提高襯墊與第二金屬曰六：迷之溝槽 之密封性’因此可實現不塗佈密封劑也丨=部 性能之電氣化學電池。 』剑乜τ侍到良好密封 部與第二金成第二溝槽。第二溝槽 之受壓空間。因此，就c比較起來較大容積 間之密接埠有少量的氣發外、。弟二金屬容器之表面部 沒有損失，可實現麵卜核生，溝槽的吸著力完全 之密接性。 H屬容器^卩間之安定 襯墊之狹縫之底部亦、 具有吸盤的功能，可提成第二溝槽。第三溝槽也 與襯墊之狹縫之底部間的货金屬容器之壁部之前端部 密封特性。 ^ 、接性，接著得到更好優異的 第一、第二及第三 〜、溝槽適宜為2〇〜2〇一。若溝 200832784 槽之深度設定為前述之範圍，可得到良好的密封性。 第一溝槽之寬度適宜為300〜500μιη。若溝槽之寬度 設定為前述之範圍，可得到良好的密封性。 本發明之實施例之電氣化學電池，亦為一雙層電極 電容，其具備：兩個分極性電極，其係含浸電解質，分 別密接且接合於第一及第二金屬容器内侧表面；隔離 ’ 膜，其係配置於兩個電極間且防止短路。藉由前述之構 成，可得到密封性能良好的之雙層電極電容。As described above, a high degree of sealing performance can be achieved in a plurality of stages. The surface of the second metal container, as described above, can extend the life of the liner in the liner. It can also be disposed between the surface portions of the & As described above, the front end of the wall covering of the metal container can be efficiently conveyed to the protruding portion. The degree of orientation of the 争 、 ΐ ί 适宜 适宜 适宜 适宜 适宜 二 二 二 二 二 二 二 二 二 二 二 二 二 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 - The first projection can also be formed at the bottom of the slit of the gasket. Thereby, the front end portion of the wall portion of the first metal container is in close contact with the bottom portion of the slit of the gasket, and a high sealing property can be obtained. The dog's outfit is a circular cross-sectional shape before assembly. By the arc-shaped cross-sectional shape, the shape of the spacer is slightly skewed, and the contact state between the projection and the face of the second metal container is not greatly deformed. Therefore, the sealing performance is not significantly reduced. Therefore, the dimensional error of the gasket is large, and the manufacturing cost of the liner can be reduced. Furthermore, even if the mattress is slightly skewed during assembly, the sealing performance does not change significantly. Therefore, the assembly yield of the electrochemical battery can be improved. An electrochemistry battery according to an embodiment of the present invention includes two polarization electrodes, which are two polarization electrodes, which are impregnated with an electrolyte and are in close contact with the inner surfaces of the first and second metal containers, respectively. A spacer film disposed between the two divided polarity electrodes 17 200832784 and capable of preventing short circuit. By this configuration, the electrode capacitance can be realized. According to another embodiment of the present invention, there is provided a feature 2 comprising: a first and a second metal container, the second system f and a slightly vertical direction from the edge of the surface portion ς丨3 a surface portion provided with a ring The lining pad has a slit surface which can accommodate the entire circumference of the front end portion of the wall portion of the front portion 2, and covers the second metal container, and the first metal container, a front end portion of the wall portion, a surface portion and a wall portion; a front curve such that the front end portion presses the front end portion into an obtuse angle; and a portion of the metal container side bottom portion where the second metal container is covered And forming a groove-to-groove with the surface portion. By the effect that the bottom surface of the gasket forms the ring-shaped first suction cup, the sealing property of the gasket and the second metal crucible can be improved. Therefore, it is possible to achieve no sealing agent or partial performance. Electrochemical battery. 』Sword 乜 侍 served to the good seal and the second gold into the second groove. The pressed space of the second groove. Therefore, in comparison with c, the close connection between the larger volumes has a small amount of gas. There is no loss on the surface of the second metal container, and the surface is nuclei, and the absorbing force of the groove is completely intimate. H is the stability of the container. The bottom of the slit of the pad also has the function of a suction cup, which can be made into a second groove. The third groove is also sealed to the front end of the wall portion of the metal container between the bottom of the slit of the liner. ^, 接, then get better and better first, second and third ~, the groove is suitable for 2〇~2〇. If the depth of the groove of the groove 200832784 is set to the above range, a good sealing property can be obtained. The width of the first groove is suitably 300 to 500 μm. If the width of the groove is set to the aforementioned range, a good sealing property can be obtained. The electrochemistry battery of the embodiment of the present invention is also a double-layer electrode capacitor, comprising: two polarization electrodes, which are impregnated with electrolyte, respectively adhered and bonded to the inner surface of the first and second metal containers; It is placed between the two electrodes and prevents short circuits. According to the above configuration, a double-layer electrode capacitor having good sealing performance can be obtained.
19 200832784 【圖式簡單說明】 第一圖係本發明第一實施例之雙層電氣電容之立 體圖。 第二圖係本發明第一實施例之雙層電氣電容之斷 面圖。 第三A圖係本發明第一實施例中，壓合前襯墊附近 之放大斷面圖。 第三B圖係本發明第一實施例中，壓合後襯墊附近 之放大斷面圖。 第三C圖係本發明第一實施例之變形例中，壓合前 襯墊附近之放大斷面圖。 第四A圖係本發明第二實施例中，壓合前概墊附近 之放大斷面圖。 第四B圖係本發明第二實施例中，壓合後襯墊附近 之放大斷面圖。 第五A圖係本發明第三實施例中，壓合前概墊附近 之放大斷面圖。 第五B圖係本發明第三實施例中，壓合後襯墊附近 之放大斷面圖。 【主要元件符號說明】 1 雙層電極電容 3 第一金屬容器 3a 壁部 3b 圓盤部 3c 壁部之前端部 20 200832784 3d 位差部 4 第二金屬容器 4 a 壁部 4b 圓盤部 5 上部電極 6 下部電極 7 隔離膜 8 概塾19 200832784 BRIEF DESCRIPTION OF THE DRAWINGS The first figure is a perspective view of a double layer electrical capacitor of a first embodiment of the present invention. The second drawing is a cross-sectional view of a double layer electrical capacitor of the first embodiment of the present invention. Fig. 3A is an enlarged cross-sectional view showing the vicinity of the pad before pressing in the first embodiment of the present invention. Fig. 3B is an enlarged cross-sectional view showing the vicinity of the pad after press-fitting in the first embodiment of the present invention. The third C diagram is an enlarged cross-sectional view of the vicinity of the gasket before the press-fitting in the modification of the first embodiment of the present invention. Fig. 4A is an enlarged cross-sectional view showing the vicinity of the pad before pressing in the second embodiment of the present invention. Fig. 4B is an enlarged cross-sectional view showing the vicinity of the pad after press-fitting in the second embodiment of the present invention. Fig. 5A is an enlarged cross-sectional view showing the vicinity of the pad before pressing in the third embodiment of the present invention. Fig. 5B is an enlarged cross-sectional view showing the vicinity of the pad after press-fitting in the third embodiment of the present invention. [Description of main component symbols] 1 Double-layer electrode capacitor 3 First metal container 3a Wall portion 3b Disk portion 3c Wall portion front end portion 20 200832784 3d Displacement portion 4 Second metal container 4 a Wall portion 4b Disk portion 5 Upper portion Electrode 6 lower electrode 7 isolation film 8
21twenty one