200306029 (1) 玖、發明說明 【發明所屬之技術領域】 本發明係關於電池盒，尤其是有關將薄型電池固定在 殼的電池盒。 【先前技術】 薄型電池的電池盒，是裝設在各種的攜帶用的電子機 器並便利地被使用。特別是，對於如行動電話，需將整體 薄化設計的電子機器是最適合的形狀。此形狀的電池盒， 因爲若不將薄型電池薄化，就無法將整體薄化，所以怎樣 將薄型電池薄化的硏究是被進行著。目前，非常薄的薄型 電池已開發有聚合物電池。聚合物電池，因爲是在外裝使 用鋁的積層薄膜，所以可以將整體形成非常薄。進一步， 在外裝使用鐵或鋁的鋰離子二次電池的薄型電池也被開發 目前被開發的聚合物電池或鋰離子二次電池等的薄型 電池，已經被相當薄化地設計。進一步，這些薄型電池， 不減少充電容量減少，但可更薄的硏究也正在進行。且， 對於將薄型電池內藏的塑膠盒電池，整體薄化的設計也正 在進行。特別是’裝設在如攜帶用的電子機器的被要求更 薄的機器的電池盒，是要求更進一步薄化設計。因此，不 使薄型電池的充電容量，但可將電池盒薄化設計是非常重 要，因此，可符合該條件的電池盒是有需求。 因爲本發明，是以非常簡単的構造，且不將薄型電池 -6- (2) (2)200306029 本身薄化，而是將電池盒薄化爲目的開發而成，所以本發 明的重要目的，是提供一種不改變薄型電池的厚度就可將 電池盒整體的厚度薄化至極限爲止的電池盒。 【發明內容】 (發明的揭示） 本發明的電池盒，具備外裝殼、及收納於此外裝殼的 厚度是比電池的寬還薄的薄型電池。外裝殼，是設有使薄 型電池的表背面露出外部的開口部，且形成覆蓋薄型電池 的兩側面及兩端面的方形框形。外裝殼的厚度是與薄型電 池的厚度幾乎相等，或者是將外裝殼作成比薄型電池還薄 〇 以上的電池盒具有不改變薄型電池的厚度就可將電池 盒整體的厚度薄化至極限爲止的特長。這是因爲電池盒， 在收納有薄型電池的外裝殻，設有使薄型電池的表背面露 出外部的開口部，且形成覆蓋薄型電池的兩側面及兩端面 的方形框形。此構造的電池盒，因爲非習知的由外裝殼被 覆薄型電池的表背面，所以將薄型電池收納於外裝殻，同 時也可將電池盒整體的厚度作成與薄型電池相同。 外裝殼是具備：覆蓋薄型電池的兩側面的側面殼部、 及覆蓋薄型電池的兩端面蓋端部殻部。側面殼部是在內面 設有保持溝，在此保持溝，是供放入薄型電池兩側面的中 央突出部。且，在外裝殼的端部殼部或者是側面殼部，配 設有輸出接觸子的接觸子支架。 (3) (3)200306029 且，外裝殼是具備被分割成薄型電池的表背面的第1 殼及第2殼。第1殻及第2殼是具備側面殼部及端部殼部 ，且第1殼及第2殻是連結側面殼部及端部殼部來保持薄 型電池。進一步，將第1殼及第2殻熔接而連結。且進一 步，將薄型電池的表面由絕緣材被覆。也可將絕緣薄片接 合並被覆在薄型電池及外裝殼。在接合有絕緣薄片的被薄 型電池及外裝殻的接合面是具有凹凸或是段差等的非平面 部，沿著此非平面部成形的絕緣薄片是接合在薄型電池及 外裝殼的接合面。該絕緣薄片可沿著非平面部進行將已成 形的非平面形狀不明顯化的表面處理。 此絕緣薄片是將緣部配置於薄型電池及外裝殼之間， 將絕緣薄片的緣部由薄型電池及外裝殼挾固。 以上的電池盒，具有：可以由絕緣薄片絕緣薄型電池 的表面，同時可以有效地防止該絕緣薄片從緣部剝離的特 長。 在配設有輸出接觸子的端部殼部或者是側面殼部，設 有內藏有保護電路的收納室，並在收納室內藏保護電路且 與外部絕緣。將輸出接觸子配置於定位置的接觸子支架是 內藏有保護電路。並將此接觸子支架內藏於外裝殼的端部 殼部或者是側面殻部。在設有薄型電池的凸部電極的端面 配設有絕緣環，絕緣環是具有讓凸部電極突出的貫通孔， 貫通孔是供凸部電極放入而與端面絕緣。在薄型電池的正 負的電極連結有保護元件。薄型電池是鋰離子二次電池， 或是聚合物電池。 -8 - (4) (4)200306029 【實施方式】 茲佐以圖面說明本發明之電池盒。 第1圖所示的電池盒，是具備：外裝殼1、及裝設於 此外裝殻1的薄型電池2。薄型電池2，是將電池的厚度 作成比電池的寬還薄的二次電池。薄型電池2，是鋰離子 二次電池，或聚合物電池。聚合物電池是鋰聚合物電池。 但是，本發明，並不特定薄型電池爲鋰離子二次電池或聚 合物電池。在薄型電池中，此等電池以外的電池，例如 鎳-氫電池或鎳-鎘電池也可以。 外裝殼1，是由絕緣材成形製作。供成形外裝殼1用 的絕緣材較好是塑膠。圖的外裝殼1，設有將薄型電池2 的表背面朝外部露出的開口部3，並成形供覆蓋薄型電池 2的兩側面及兩端面的方形框形。外裝殼1，是具備··覆 蓋薄型電池2的兩側面的側面殼部la、及覆蓋薄型電池2 的兩端面的端部殼部lb。側面殼部la，如第2圖所示的 橫斷面圖，將保持溝4設在內面。外裝殼1，是將薄型電 池2的兩側面的中央突出部放入側面殼部la的保持溝4 。此構造的外裝殻1，是由側面殼部la被保持在薄型電 池2的兩側，薄型電池2是如圖的箭頭A，B所示’供防 止朝表背方向脫落。如第2圖所示的剖面圖，在中央具有 突出部的薄型電池2，是藉由將突出部放入保持溝4’而 不需將側面殼部la突出至薄型電池2的表背面，就可以 阻止朝表背方向的偏離。鋰離子二次電池或聚合物電池等 -9 - (5) (5)200306029 的薄型電池，是將兩側面作成以預定的曲率半徑彎曲的形 狀。呈彎曲面的薄型電池2的兩側面，沿著角落緣具有倒 角部，且在中央具有突出部。因此，倒角部，是作爲導引 保持溝4的兩側壁導引的構造，使側面殻部la不會突出 薄型電池2的表背，同時可以阻止薄型電池2的表背方向 的偏離。但是，本發明的電池盒，不一定是要在側面殼部 1 a設有保持溝4，也可以將薄型電池的兩側面在側面殻部 的內面由接合劑接合，或者是由粘接劑附著，或者是由兩 面粘接帶附著固定。 外裝殼1，是如第2圖及第3圖的剖面圖所示，將側 面殻部la及端部殼部lb的兩方形成不會從薄型電池2的 表背面突出的形狀，且將外裝殼1的厚度形成幾乎與薄型 電池2的厚度相等。圖的外裝殼1，是將側面殼部la及 端部殼部1 b的一部分形成與薄型電池2的表背面同一平 面。在薄型電池2的表背接合有標籤等的絕緣薄片7的電 池盒，只是相當於絕緣薄片7的厚度將外裝殼1形成比薄 型電池2厚，所以可將薄型電池2及外裝殼1作成相同厚 度。 但是，本發明的電池盒，可將外裝殼比薄型電池還薄 地成形，且，也可以使外裝殼形成稍從薄型電池的表面突 出的形狀。外裝殼從薄型電池突出的電池盒，可將讓突出 部嵌入的凹部設在電子機器的電池裝設部地裝設在電子機 器。因此，在本說明書中，將外裝殼的厚度作成比薄型電 池的厚度的幾乎相等的意思，是包含：外裝殼從薄型電池 -10- (6) (6)200306029 的表面稍微突出的程度，例如，在1mm以下突出的程度 下，使在外裝殼比薄型電池厚的狀態。 第1圖及第3圖的電池盒，是在外裝殼1的端部殼部 lb內，配設輸出接觸子8的接觸子支架5。圖的電池盒， 是在將薄型電池2的凸部電極10側覆蓋的端部殼部lb內 藏接觸子支架5，並在此配設輸出接觸子8。凸部電極1〇 及相反側的端部殼部1 b，是覆蓋薄型電池2的底面。接 觸子支架5，是由絕緣材成形製作。由成形接觸子支架5 的絕緣材，較好是塑膠。接觸子支架5，是將其外形，形 成與薄型電池2的凸部電極10的端面的外形的幾乎相等 ，或者是比端面的外形稍微小，且從電池端面看薄型電池 2的狀態下，接觸子支架5不會從薄型電池2朝外部突出 的形狀。此接觸子支架5，是在與電池端面的相面對面的 相反側設有一對的輸出接觸子8。輸出接觸子8是金屬板 ，且作爲輸出接觸子8的金屬板，是被固定於接觸子支架 5，或者是被挾固在接觸子支架5及外裝殻1之間地被固 定於固定定位置。 接觸子支架5，是配置於外裝殼1的端部殼部1 b的 內部。配置於此的接觸子支架5，是被挾固在端部殼部lb 的內面及薄型電池2的電池端面之間地被固定於固定位置 。外裝殻1，是在端部殼部lb開口一電極窗13。電極窗 13，是將固定在在接觸子支架5的輸出接觸子8露出於外 裝殼1的外部。因此，電極窗13，是將接觸子支架5固 定於外裝殼1的內部的固定位置，且開口於可讓輸出接觸 -11 - (7) (7)200306029 子8朝外部露出的位置。內藏在外裝殻1的接觸子支架5 ’是被按壓在薄型電池2地被固定於固定位置，而將輸出 接觸子8配置在正確地固定位置。但是，接觸子支架，也 可以配設在外裝殻的側面殼部的內部。配設於此的接觸子 支架，是被挾固在側面殼部的內面及薄型電池的電池側面 之間地被固定於固定位置。此外裝殼，是將電極窗開口在 側面殼部，並將固定在接觸子支架的輸出接觸子露出於外 裝殼的外部。 電池盒，是將一對的輸出接觸子8，隔著保護元件12 ，連接於薄型電池2的正負的電極。第4圖，是顯示電池 盒的電路圖。此電池盒，是將正負的電極，隔著保護元件 12連接於一對的輸出接觸子8。一方的電極是隔著PTC連 接於輸出接觸子8，他方的電極是隔著保險絲連接於輸出 接觸子8。此電路圖的電池盒，是將正極側的輸出接觸子 8隔著保險絲連接於薄型電池2的正極，將負極側的輸出 接觸子8隔著PTC連接於薄型電池2的負極。與此電路圖 相反，也可以連接PTC及保險絲。且，將兩方的輸出接 觸子8隔著保險絲連接於薄型電池2的電極，或者是隔著 PTC連接於薄型電池2的電極。在薄型電池2的正負的兩 電極連接保護元件1 2的電池盒，即使將輸出接觸子8及 薄型電池2的電極及弄錯而短路也可以安全地使用。其是 因爲薄型電池2的任一電極即使連接於輸出接觸子8，保 護元件1 2會動作並遮断短路電流。電池盒，是將外裝罐 及凸部電極10的雙方的表面絕緣。因此，對於通常的使 -12- (8) (8)200306029 用狀態，短路電流是不會導流。但是，將薄型電池2的外 裝罐的表面被覆的絕緣薄片7破損，或者是在外裝殼1的 內部金屬線被插入而與凸部電極10接觸的話，短路電流 會導通。例如，薄型電池2的外裝罐及負極側的輸出接觸 子8是由金屬連接時，外裝罐的絕緣是不完全的話，短路 電流會導通。且，在外裝殼1及薄型電池2之間金屬線被 插入，且此金屬線是與正極側的輸出接觸子8接觸的話短 路電流會導通。在兩輸出接觸子8及正負的電極之間連接 保護元件1 2的電池盒，短路電流導通的話，其會動作而 遮断短路電流。 保護元件12，是如第5圖的剖面圖所示，配置於接 觸子支架5的內部。圖的接觸子支架5，是在薄型電池2 的相面對面設有保護元件12的收納部14，並在此配置保 護元件12。接觸子支架5的無電池盒，是在外裝殼1的 端部殼部lb設有收納部，並在此內藏保護元件12。 圖的電池盒，是具備保護元件12作爲保護電路。但 是，電池盒，也可以將檢測電流若渦流導通的話遮断電流 的電路、檢測電池電壓並檢測電池的過充電或過放電而遮 断電流的電路等，內藏於接觸子支架5或外裝殻1來作爲 保護電路。內藏有保護電路的外裝殼1，是設有收納此的 收納室14，在此內藏保護電路並與外部絕緣。保護電路 ，是將電子零件實裝在印刷電路基板而實現。內藏保護電 路的電池盒，是在將輸出接觸子8配置於定位置的接觸子 支架5內藏保護電路，將此接觸子支架5內藏在外裝殼1 -13- (9) (9)200306029 的端部殼部lb也可以。內藏保護電路的接觸子支架，也 可以內藏在外裝殼的側面殼部。 薄型電池2，是如第6圖所示，在配設接觸子支架5 的電池端面配設絕緣環9。電池端面，因爲是配設在設有 薄型電池2的凸部電極1 〇的電池端面，所以絕緣環9也 配置於凸部電極10的電池端面。被配置於此的絕緣環9 ，是設有供將凸部電極10突出用的貫通孔11，在此貫通 孔11將凸部電極10放入，並使其固定於電池端面而與電 池端面絕緣。絕緣環9，是接合固定於電池端面，或者是 ，隔著兩面接合帶地接合固定在電池端面，或者是隔著粘 接層，接合固定在電池端面。絕緣環9的寬（W 1 )，是比電 池端面的寬（W2)還小。進一步，絕緣環9的長度，也比接 觸子支架5的長度還短較佳。此絕緣環9，是如第3圖的 剖面圖所示，嵌入接觸子支架5的內側而被固定於固定位 置。 絕緣環9，是由塑膠等的絕緣材成形製作。絕緣環， 是如第7圖及第8圖所示，可以在上面將被嵌合於保護元 件或接觸子支架的嵌合凸部716 —體地成形。圖的絕緣環 79，是將肋狀的嵌合凸部71 6設在兩端部分。嵌合凸部 716，是如第9圖所示，嵌合在配置於電池端面的保護元 件712，且將其等保持在固定位置。進一步，將接觸子支 架的下面，成形成可以嵌合在嵌合凸部716的形狀，而可 以將嵌合凸部716嵌合在接觸子支架，並將接觸子支架配 置於固定位置。然而，第7圖至第9圖中，710是表示凸 -14· (10) (10)200306029 部電極，711是表示貫通孔，715是表示簧片。 且，在薄型電池2，72的電池端面配置絕緣環9、79 的電池盒，是可以由絕緣環9，79將薄型電池2、72的長 度的尺寸誤差吸収的構造。特別是，在絕緣環9、79，使 用：厚度可彈性地變形的薄片材，例如非織布、絕緣紙、 橡膠狀彈性薄片，就可由1枚的絕緣環9、79將薄型電池 2，72的尺寸誤差吸収。且，不彈性地變形的絕緣環9、 79，藉由調整層疊枚數，就可以將薄型電池2、72的尺寸 誤差吸収。但是，由絕緣環9、79將薄型電池2，72的尺 寸誤差吸収的電池盒，並非將絕緣環接觸子支架的內側完 全地放入，而是形成：將絕緣環的一部分，或者是全周， 由電池端面及接觸子支架挾固，並由絕緣環的彈性復元力 按壓接觸子支架的構造。此構造的電池盒，是無關薄型電 池的尺寸，就可將接觸子支架配置於外裝殼的固定位置， 並將輸出接觸子配置於正確地位置。 第1圖〜第3圖的外裝殻1，是具備在薄型電池2的 表背面被分割的第1殼1A及第2殼1B。第1殼1A及第 2殼1 B，是相互地連結側壁17而裝設在薄型電池2。第1 殼1A及第2殼1B，是分別具備側面殼部la及端部殼部 1 b。第1殼1A及第2殼1B，是將側面殼部1 a的側壁17 相互地連結，且，第1殼1A及第2殼1B的端部殼部lb 也連結側壁17。第1殼1A及第2殼1 B ’是相互地將側壁 17的相面對面超音波熔接而簡単且確實地被連結。被超 音波熔接的第1殼1A及第2殼1B’是由熱可塑性的塑膠 -15- (11) (11)200306029 一體地成形。被超音波熔接的側壁17的相面對面’是如 第10圖的立體圖及第2圖的剖面圖所示’在一方設有縱 溝，在他方設有供放入縱溝的凸條’且在將凸條放入縱溝 的狀態下進行超音波熔接，而更確實地不會分離地被熔接 連結。但是，第1殼1A及第2殼1B’也可以將相面對面 相互地接合連結。 圖的外裝殼1，是將第1殼1A及第2殼1B的側壁17 作成幾乎相同高度。此外裝殼1’是將薄型電池2放入第 1殼1A，之後，連結第2殼1B的側壁17在第1殼1A， 在此狀態下，就可將側壁1 7超音波熔接連結。如此’被 連結的外裝殻1，藉由將凸條放入設在側壁17的相面對 面的縱溝，就可以不使第1殻1A及第2殻1B的側壁17 位置偏離地連結。因此，在此狀態下連結的話，就可以將 兩側壁1 7連結在正確地位置。 被收納於相互地連結的第1殼1A及第2殼1B的薄 型電池2，是如第2圖的剖面圖及第10圖的背面圖所示 ，在表面將標籤等的絕緣薄片7接合而被覆蓋。絕緣薄片 7，如第1圖所示，是將外裝殼1的開口部3的全面塞住 地被接合，並絕緣露出外裝殼1的外部的薄型電池2的外 裝罐的全面。此構造，是使用不將表面絕緣處理的外裝罐 的薄型電池2，而可以將外裝罐絕緣。但是，本發明的電 池盒，並非在外裝罐的表面將絕緣薄片7接合，而是如第 7圖的網線區塊所示，在外裝罐的表面塗抹絕緣材76，而 將外裝罐絕緣也可以。內藏此薄型電池72的電池盒，是 -16- (12) (12)200306029 不需要在外裝殼的開口部接合絕緣薄片。但是，將外裝罐 的表面由絕緣材76絕緣，並在外裝殻的開口部接合絕緣 薄片地雙層絕緣也可以。200306029 (1) 发明 Description of the invention [Technical field to which the invention belongs] The present invention relates to a battery case, and more particularly to a battery case for fixing a thin battery to a case. [Prior Art] A battery case for a thin battery is conveniently installed in various portable electronic devices. In particular, for an electronic device such as a mobile phone, a thinner overall design is the most suitable shape. Since the battery case of this shape cannot be thinned without thinning the thin battery, research on how to thin the thin battery is being carried out. Currently, polymer batteries have been developed for very thin and thin batteries. The polymer battery is made of aluminum laminated film on the exterior, so it can be made very thin overall. Further, a thin battery in which a lithium-ion secondary battery using iron or aluminum is externally mounted has also been developed. A thin battery such as a polymer battery or a lithium-ion secondary battery that has been developed so far has been designed to be considerably thinner. Further, these thin batteries do not reduce the charge capacity, but research into thinner batteries is also underway. In addition, the design of the overall thinning of the plastic case battery built into the thin battery is also progressing. In particular, a battery case mounted on a thinner device such as a portable electronic device requires a thinner design. Therefore, the charging capacity of the thin battery is not reduced, but it is very important to design the battery case thin. Therefore, there is a need for a battery case that can meet this condition. Because the present invention has a very simple structure, and does not thin the thin battery -6- (2) (2) 200306029 itself, but was developed for the purpose of thinning the battery case, an important object of the present invention, It is to provide a battery case that can reduce the thickness of the entire battery case to the limit without changing the thickness of the thin battery. [Disclosure of the Invention] (Disclosure of the Invention) The battery case of the present invention includes an outer case and a thin battery that is accommodated in the outer case and is thinner than the width of the battery. The exterior case has a rectangular frame shape provided with openings for exposing the front and back surfaces of the thin battery to the outside and covering both sides and both end surfaces of the thin battery. The thickness of the outer case is almost equal to the thickness of the thin battery, or the outer case is made thinner than the thin battery. The battery case has a thickness that can reduce the overall thickness of the battery case to the limit without changing the thickness of the thin battery. So far. This is because the battery case includes a thin battery case, which is provided with an opening for exposing the front and back surfaces of the thin battery, and has a square frame shape covering both sides and both ends of the thin battery. The battery case of this structure has a conventional case that covers the front and back surfaces of the thin battery. Therefore, the thin battery can be stored in the outer case, and the thickness of the entire battery case can be made the same as that of the thin battery. The exterior case includes a side shell portion covering both sides of the thin battery, and an end shell portion covering both end faces of the thin battery. The side case is provided with a holding groove on the inner surface, and the holding groove is a central protruding portion for receiving both sides of the thin battery. In addition, a contactor bracket for outputting a contactor is provided at an end shell part or a side shell part of the exterior case. (3) (3) 200306029 The outer case is a first case and a second case that are divided into a front surface and a rear surface that are divided into thin batteries. The first case and the second case are provided with a side case and an end case, and the first case and the second case are connected to the side case and the end case to hold the thin battery. Furthermore, the first case and the second case are fused and connected. Furthermore, the surface of the thin battery is covered with an insulating material. It is also possible to join the insulation sheet and cover the thin battery and the outer case. The joint surface of the thin battery and the outer case to which the insulating sheet is bonded is a non-planar portion having unevenness or a step, and the insulating sheet formed along the non-planar portion is the joint surface of the thin battery and the outer case. . This insulating sheet may be surface-treated along the non-planar portion so that the formed non-planar shape is not noticeable. In this insulating sheet, the edge portion is arranged between the thin battery and the outer case, and the edge portion of the insulating sheet is fixed by the thin battery and the outer case. The above battery case has a feature that the surface of the thin battery can be insulated by the insulating sheet, and at the same time, the insulating sheet can effectively prevent the insulating sheet from being peeled from the edge portion. In the end case or the side case where the output contactor is provided, a storage chamber having a protection circuit built therein is provided, and the protection circuit is stored in the storage chamber and insulated from the outside. The contactor bracket in which the output contactor is arranged at a fixed position has a built-in protection circuit. The contact sub-bracket is embedded in the end shell part or the side shell part of the outer shell. An insulation ring is provided on the end surface of the convex electrode provided with the thin battery. The insulation ring has a through hole through which the convex electrode protrudes. The through hole is used for the convex electrode to be inserted to insulate the end surface. A protective element is connected to the positive and negative electrodes of the thin battery. The thin battery is a lithium ion secondary battery or a polymer battery. -8-(4) (4) 200306029 [Embodiment] The battery case of the present invention will be described with reference to the drawings. The battery case shown in FIG. 1 includes an outer case 1 and a thin battery 2 mounted in the outer case 1. The thin battery 2 is a secondary battery in which the thickness of the battery is made thinner than the width of the battery. The thin battery 2 is a lithium ion secondary battery or a polymer battery. The polymer battery is a lithium polymer battery. However, the present invention does not specify that the thin battery is a lithium ion secondary battery or a polymer battery. Among thin batteries, batteries other than these batteries, such as nickel-hydrogen batteries or nickel-cadmium batteries, may be used. The outer case 1 is formed by molding an insulating material. The insulating material for forming the outer case 1 is preferably plastic. The exterior case 1 in the figure is provided with an opening 3 that exposes the front and back surfaces of the thin battery 2 to the outside, and is formed into a square frame shape to cover both sides and both ends of the thin battery 2. The exterior case 1 is provided with a side case 1a covering both sides of the thin battery 2 and an end case 1b covering both end faces of the thin battery 2. The side shell portion la is provided with a holding groove 4 on the inner surface as shown in a cross-sectional view in FIG. 2. The outer case 1 is a holding groove 4 in which central protrusions on both sides of the thin battery 2 are placed in the side case 1a. The outer case 1 of this structure is held on both sides of the thin battery 2 by the side case portion la. The thin battery 2 is shown by arrows A and B in FIG. As shown in the sectional view in FIG. 2, the thin battery 2 having a protruding portion in the center is inserted into the holding groove 4 ′ without protruding the side case portion la to the front and back surfaces of the thin battery 2. Can prevent the deviation in the direction of the front and back. Lithium-ion secondary batteries or polymer batteries, etc. -9-(5) (5) 200306029 A thin battery that has both sides formed into a curved shape with a predetermined radius of curvature. Both sides of the thin battery 2 having a curved surface have a chamfered portion along a corner edge and a protruding portion in the center. Therefore, the chamfered portion is a structure for guiding both side walls of the guide holding groove 4, so that the side case portion 1a does not protrude from the front and back of the thin battery 2, and at the same time, it is possible to prevent deviation of the front and back directions of the thin battery 2. However, in the battery case of the present invention, it is not necessary to provide the holding grooves 4 in the side case portion 1 a, and both sides of the thin battery may be joined by an adhesive on the inner surface of the side case portion or by an adhesive. Attach, or fix by two-sided adhesive tape. The exterior case 1 is formed into a shape that does not protrude from the front and back surfaces of the thin battery 2 as shown in the cross-sectional views of FIGS. 2 and 3, and that both sides of the side case 1 a and the end case 1 b are formed. The thickness of the outer case 1 is formed almost equal to the thickness of the thin battery 2. In the exterior case 1 shown in the figure, a part of the side case la and the end case 1 b are formed on the same plane as the front and back surfaces of the thin battery 2. A battery case in which an insulating sheet 7 such as a label is bonded to the front and back of the thin battery 2 is only equivalent to the thickness of the insulating sheet 7 to form the outer case 1 thicker than the thin battery 2. Therefore, the thin battery 2 and the outer case 1 can be formed. Made of the same thickness. However, in the battery case of the present invention, the outer case can be formed thinner than a thin battery, and the outer case can be formed into a shape protruding slightly from the surface of the thin battery. The battery case in which the outer case protrudes from the thin battery can be mounted on the electronic device by providing a recessed portion in which the protruding portion is fitted in the battery mounting portion of the electronic device. Therefore, in this specification, the meaning of the thickness of the outer case is almost equal to the thickness of the thin battery, and it means that the outer case slightly protrudes from the surface of the thin battery -10- (6) (6) 200306029 For example, in a state of protruding below 1 mm, the outer case is thicker than the thin battery. The battery case shown in FIGS. 1 and 3 is a contactor holder 5 which is provided with an output contactor 8 in an end case 1 b of the outer case 1. In the battery case shown in the figure, a contact sub-bracket 5 is embedded in an end shell portion 1b that covers the convex electrode 10 side of the thin battery 2, and an output contact 8 is provided there. The convex electrode 10 and the opposite end shell portion 1 b cover the bottom surface of the thin battery 2. The contact holder 5 is made of an insulating material. The insulating material formed from the contact sub-bracket 5 is preferably plastic. The contact sub-bracket 5 is formed so that its outer shape is almost equal to the outer shape of the end surface of the convex electrode 10 of the thin battery 2 or is slightly smaller than the outer shape of the end surface, and the thin battery 2 is viewed from the end surface of the battery. A shape in which the sub-stand 5 does not protrude outward from the thin battery 2. The contact holder 5 is provided with a pair of output contacts 8 on the side opposite to the end face of the battery. The output contactor 8 is a metal plate, and the metal plate serving as the output contactor 8 is fixed to the contactor bracket 5 or fixed to the fixed position between the contactor bracket 5 and the outer casing 1. position. The contact sub-bracket 5 is disposed inside the end case portion 1 b of the exterior case 1. The contact holder 5 arranged here is fixed at a fixed position between the inner surface of the end case lb and the battery end surface of the thin battery 2. The outer case 1 is an electrode window 13 opened at the end case 1b. The electrode window 13 exposes the output contactor 8 fixed to the contactor holder 5 to the outside of the exterior case 1. Therefore, the electrode window 13 is a fixed position for fixing the contact sub-bracket 5 to the inside of the exterior case 1, and is opened at a position where the output contact can be exposed to the outside. -11-(7) (7) 200306029 The contactor bracket 5 'built in the outer case 1 is fixed to the fixed position by being pressed against the thin battery 2, and the output contactor 8 is arranged at the correct fixed position. However, the contact sub-bracket may be disposed inside the side shell portion of the exterior case. The contactor holder provided here is fixed in a fixed position between the inner surface of the side case and the battery side of the thin battery. In the external case, the electrode window is opened in the side case, and the output contactor fixed to the contactor bracket is exposed to the outside of the external case. The battery case is a pair of output contacts 8 connected to the positive and negative electrodes of the thin battery 2 via a protective element 12. Fig. 4 is a circuit diagram showing a battery case. In this battery case, positive and negative electrodes are connected to a pair of output contacts 8 via a protective element 12. One electrode is connected to the output contact 8 via a PTC, and the other electrode is connected to the output contact 8 via a fuse. In the battery case of this circuit diagram, the output contact 8 on the positive side is connected to the positive electrode of the thin battery 2 via a fuse, and the output contact 8 on the negative side is connected to the negative electrode of the thin battery 2 via a PTC. In contrast to this circuit diagram, PTC and fuses can also be connected. The two output contacts 8 are connected to the electrodes of the thin battery 2 via a fuse or to the electrodes of the thin battery 2 via a PTC. The battery case where the positive and negative electrodes of the thin battery 2 are connected to the protective element 12 can be safely used even if the output contacts 8 and the electrodes of the thin battery 2 are mistakenly short-circuited. This is because even if any one of the electrodes of the thin battery 2 is connected to the output contact 8, the protection element 12 operates and blocks the short-circuit current. The battery case insulates the surfaces of both the exterior can and the bump electrode 10. Therefore, for the normal use of -12- (8) (8) 200306029, the short-circuit current will not conduct current. However, if the insulating sheet 7 covering the surface of the outer case of the thin battery 2 is damaged, or if a metal wire is inserted into the outer case 1 and comes into contact with the convex electrode 10, a short-circuit current will be conducted. For example, when the outer can of the thin battery 2 and the output contact 8 on the negative side are connected by metal, if the insulation of the outer can is incomplete, a short-circuit current will be conducted. When a metal wire is inserted between the outer case 1 and the thin battery 2 and the metal wire is in contact with the output contact 8 on the positive side, a short-circuit current is conducted. The battery case of the protective element 12 is connected between the two output contacts 8 and the positive and negative electrodes. When the short-circuit current is conducted, it will operate to block the short-circuit current. The protection element 12 is disposed inside the contact holder 5 as shown in the sectional view of FIG. 5. The contact holder 5 shown in the figure is a storage portion 14 provided with a protective element 12 on the opposite side of the thin battery 2, and the protective element 12 is arranged here. The batteryless case that contacts the sub-bracket 5 is provided with an accommodating portion in the end case portion 1b of the outer case 1, and a protective element 12 is incorporated therein. The battery case shown in the figure is provided with a protection element 12 as a protection circuit. However, the battery box may include a circuit that detects the current if the eddy current is turned on, a circuit that interrupts the current, a circuit that detects the battery voltage, and detects that the battery is overcharged or overdischarged to block the current. Comes as a protection circuit. The exterior case 1 in which the protection circuit is incorporated is provided with a storage chamber 14 for accommodating this, and the protection circuit is incorporated therein and insulated from the outside. The protection circuit is realized by mounting electronic components on a printed circuit board. The battery case with a built-in protection circuit has a protection circuit in the contact sub-bracket 5 in which the output contact 8 is arranged at a fixed position, and the contact sub-bracket 5 is embedded in the outer casing 1 -13- (9) (9) The end shell 2003b of 200306029 can also be used. The contact sub-bracket with built-in protection circuit can also be built into the side shell of the outer shell. As shown in FIG. 6, the thin battery 2 is provided with an insulating ring 9 on a battery end face on which the contact sub-stand 5 is provided. Since the battery end face is disposed on the battery end face provided with the convex electrode 10 of the thin battery 2, the insulating ring 9 is also disposed on the battery end face of the convex electrode 10. The insulating ring 9 arranged here is provided with a through hole 11 for protruding the convex electrode 10, and the through hole 11 is used to insert the convex electrode 10 and fix it to the battery end surface to insulate the battery end surface. . The insulating ring 9 is fixed to the end face of the battery by bonding, or is fixed to the end face of the battery through two-sided bonding tapes, or is fixed to the end face of the battery through an adhesive layer. The width (W 1) of the insulating ring 9 is smaller than the width (W2) of the battery end face. Furthermore, the length of the insulating ring 9 is preferably shorter than the length of the contact holder 5. As shown in the sectional view of Fig. 3, the insulating ring 9 is fitted into the inside of the contact sub-bracket 5 and is fixed in a fixed position. The insulating ring 9 is made of an insulating material such as plastic. As shown in FIG. 7 and FIG. 8, the insulating ring can be integrally formed with a fitting projection 716 that is fitted to the protection element or the contact sub-mount. In the insulating ring 79 shown in the figure, rib-shaped fitting projections 716 are provided at both end portions. The fitting convex portion 716 is fitted into the protection element 712 arranged on the end face of the battery as shown in Fig. 9 and holds them in a fixed position. Further, the lower surface of the contact sub-support is formed into a shape that can be fitted into the fitting projection 716, and the fitting projection 716 can be fitted to the contact sub-support, and the contact sub-support is placed in a fixed position. However, in FIGS. 7 to 9, 710 indicates convex -14 · (10) (10) 200306029 electrodes, 711 indicates a through hole, and 715 indicates a reed. In addition, the battery case in which the insulating rings 9, 79 are arranged on the battery end faces of the thin batteries 2, 72 has a structure in which the dimensional errors in the length of the thin batteries 2, 72 can be absorbed by the insulating rings 9, 79. In particular, in the insulating rings 9, 79, using thin sheets that can be deformed elastically, such as non-woven fabrics, insulating paper, and rubber-like elastic sheets, thin batteries 2, 72 can be formed by one insulating ring 9, 79. Absorption of dimensional errors. In addition, the inelastically deformed insulating rings 9, 79 can absorb dimensional errors of the thin batteries 2, 72 by adjusting the number of stacked layers. However, the battery case that absorbs the dimensional error of the thin battery 2, 72 by the insulating rings 9, 79 does not completely put the insulating ring into the inside of the sub-bracket, but forms: a part of the insulating ring, or the entire circumference The structure is fixed by the end face of the battery and the contact sub-bracket, and is pressed by the elastic restoration force of the insulating ring. The battery case of this structure is irrespective of the size of the thin battery, and the contact sub-bracket can be arranged at a fixed position of the outer casing, and the output contact can be arranged at the correct position. The exterior case 1 shown in Figs. 1 to 3 includes a first case 1A and a second case 1B which are divided on the front and back surfaces of the thin battery 2. The first case 1A and the second case 1 B are attached to the thin battery 2 by connecting the side walls 17 to each other. The first case 1A and the second case 1B include a side case portion la and an end case portion 1 b, respectively. The first shell 1A and the second shell 1B connect the side walls 17 of the side shell portions 1 a to each other, and the end shell portions 1 b of the first shell 1A and the second shell 1B also connect the side walls 17. The first case 1A and the second case 1 B 'are simply and surely connected to each other by ultrasonically welding the facing surfaces of the side wall 17 with each other. The first case 1A and the second case 1B ', which are welded by ultrasonic waves, are integrally formed of a thermoplastic plastic -15- (11) (11) 200306029. The opposite side of the side wall 17 welded by the ultrasonic wave is shown in the perspective view of FIG. 10 and the cross-sectional view of FIG. Ultrasonic welding is performed while the ridges are placed in the vertical grooves, and the welding is more reliably performed without being separated. However, the first case 1A and the second case 1B 'may be joined and connected to each other. In the exterior case 1 shown in the figure, the side walls 17 of the first case 1A and the second case 1B are made almost the same height. In addition, in the case 1 ', the thin battery 2 is placed in the first case 1A, and then the side wall 17 connecting the second case 1B is in the first case 1A. In this state, the side wall 17 can be ultrasonically welded and connected. In this way, by connecting the outer casings 1 into the longitudinal grooves provided on the side walls 17 facing each other, the side walls 17 of the first case 1A and the second case 1B can be connected without being deviated. Therefore, if they are connected in this state, the two side walls 17 can be connected at the correct positions. The thin battery 2 housed in the first case 1A and the second case 1B connected to each other is formed by bonding an insulating sheet 7 such as a label on the surface as shown in the cross-sectional view of FIG. 2 and the rear view of FIG. 10. Be covered. As shown in FIG. 1, the insulating sheet 7 is the entire surface of the outer can of the thin battery 2 that is joined by plugging the entire surface of the opening 3 of the outer case 1 and insulates the exterior of the outer case 1. With this structure, it is possible to insulate the outer case by using the thin battery 2 without the outer case in which the surface is insulated. However, in the battery case of the present invention, instead of joining the insulating sheet 7 on the surface of the exterior can, as shown by the network cable block in FIG. 7, the surface of the exterior can is coated with an insulating material 76 to insulate the exterior can. Yes. The battery case containing the thin battery 72 is -16- (12) (12) 200306029. It is not necessary to join an insulating sheet to the opening of the outer case. However, a double-layer insulation may be adopted in which the surface of the exterior can is insulated by an insulating material 76, and an insulation sheet is joined to the opening of the exterior case.
進一步，絕緣薄片7，可以接合在薄型電池2及外裝 殼1來進行被覆。如第2圖所示的絕緣薄片7,是將其外 周部，包覆在外裝殼1的開口部3的開口端部的狀態進行 接合。如此，將絕緣薄片7的外周部接合在薄型電池2的 構造，因爲是可以將外裝殼1及薄型電池2隔著絕緣薄片 7 —體地連結，所以具有可確實地防止這些位置偏離的特 長。進一步，在接合有絕緣薄片的薄型電池及外裝殼的接 合面具有凹凸或是段差等的非平面部的電池盒，是可以將 沿著此非平面部成形的絕緣薄片接合在接合面。第1 1圖 及第1 2圖所示的電池盒，是將外裝殼1 1 1設計成比薄型 電池112的外周部還厚，並在這些的境界部分形成段差形 狀的非平面部1 1 20。此電池盒，如第13圖所示，是將使 中央部的電池被覆部117Α形成比外周部的盒被覆部117Β 更凹陷於內側的形狀的絕緣薄片1 1 7，接合在薄型電池 1 1 2及外裝殼1 1 1的接合面。但是，如第14圖所示，將外 裝殼1設計成比薄型電池2的外周部還薄的電池盒，是可 以將成形成使電池被覆部147Α較盒被覆部147Β更朝外側 突出的形狀的絕緣薄片147接合在薄型電池142及外裝殻 141的接合面。然而，第11圖至第13圖中，111Α是表示 第1殻，111Β是表示第2殼，1118是表示取出用爪，第 14圖中，141Α是表示第1殼，141Β是表示第2殼，147C -17- (13) (13)200306029 是表示段差部，1420是表示非平面部分。 第12圖及第13圖所示的絕緣薄片117，是在接合於 薄型電池112的外裝罐的電池被覆部117A、及接合於外 裝殼111的盒被覆部11 7B之間，成形成非平面形狀的段 差部117C。此段差部117C，是在電池被覆部117A及盒被 覆部117B之間，成形於與接合面的非平面部1120相面對 的位置。此形狀的絕緣薄片117，例如，可以將平面狀的 薄片沖床加工而成形成段差形狀。第11圖所示電池盒， 因爲是沿著外裝殼111的開口部11 3形成非平面部11 20， 所以絕緣薄片1 1 7的段差部1 1 7C沿著開口部1 1 3成形。 此形狀的絕緣薄片11 7，因爲是在將非平面形狀的段差部 11 7C配設在接合面的非平面部1120的狀態下接合於薄型 電池11 2及外裝殼111，而具有：可以防止在此部分形成 皺紋且可以迅速地接合的特長。特別是，在1 2圖所示絕 緣薄片117，因爲是將段差部117C作爲傾斜面，所以具 有：可由此傾斜面吸收前後左右方向朝的位置偏離地接合 ，且可將此部分不明顯化的特長。 進一步，絕緣薄片117、147，可以將沿著非平面部 1 120、1420成形的非平面形狀進行不明顯化的表面處理。 此表面處理，雖無圖示，但可由複數的平行線或，無方向 性的無數曲線表示，或者是，利用濃淡差或施加色不同的 裝飾。這些的表面處理，是利用明暗或色彩等的眼睛的錯 覺，讓絕緣薄片117、147的非平面形狀不明顯化。如此 ’可以將絕緣薄片1 1 7、1 47的非平面形狀不明顯化的電 -18- (14) (14)200306029 池盒，是具有外觀佳的特長。 第15圖至第19圖，是顯示其他實施例的薄型電池。 在這些圖所示的薄型電池152，是將標籤等的絕緣薄片 157接合被覆在表面。然而，對於以下的實施例，對於與 前述的第1圖至第6圖所示的實施例相同的構成要素，則 在除了上2位數之外的下位數附上同一符號，省略其說明 〇 接合薄型電池152的被絕緣薄片157，是配置於薄型 電池152的帽部152B且可將電池端面倂用作爲絕緣構件 。薄型電池2的帽部152B，是指將薄型電池152的外裝 罐的開口部閉塞的部分，即指具有凸部電極1 5 1 0的側的 電池端面及其周邊部。第17圖所示電池盒，是將接合於 薄型電池152的表面的絕緣薄片157的端緣包覆至帽部 1 5 2B爲止。即，絕緣薄片157，是形成從外裝罐的端緣朝 凸部電極1 5 1 0的突出方向突出的狀態。如此，至薄型電 池152的帽部152B爲止延長配設的絕緣薄片157，是可 將凸部電極1 5 1 0或電池端面有效地絕緣。 絕緣薄片1 57，是塑膠薄膜。但是，絕緣薄片是可以 使用所有將絕緣材加工成薄片狀者。例如，將塑膠薄膜的 表面金屬電鍍者，或者是將金屬箔的表面由塑膠等的絕緣 被膜被覆者。絕緣薄片157，是在接合面設有粘接層。此 絕緣薄片1 57，是可以隔著粘接層不使用接合劑地接合於 薄型電池152的表面。但是，絕緣薄片157，是可以隔著 接合劑接合於薄型電池1 52的表面。且，將接合面或者是 -19- (15) (15)200306029 全體作爲熱可塑性的塑膠薄膜的絕緣薄片，是可以進行由 超音波熔接，或者是由加熱而熔接在薄型電池的表面的接 合。 電池盒，是如第15圖及第16圖所示，可以由2枚的 絕緣薄片157被覆薄型電池152的表面。且，可以將1枚 的絕緣薄片U字形彎曲並接合在薄型電池，來被覆薄型電 池的兩面。第1 8圖的剖面圖所示的電池盒，是將1枚的 絕緣薄片1 87沿著薄型電池1 82的片側U字形彎曲地將薄 型電池182的兩面被覆。 絕緣薄片157，是將緣部放入薄型電池152及外裝殼 151之間，且由薄型電池152及外裝殼151挾固。電池盒 ，最好是將絕緣薄片157的全周緣放入薄型電池152及外 裝殼1 5 1之間地挾固。此電池盒，是可以在理想的狀態下 防止絕緣薄片1 57從緣部從剥離。第1 5圖及第1 6圖的電 池盒，是將2枚的絕緣薄片157的全周挾固在薄型電池 1 52及外裝殻1 5 1之間。第1 8圖的電池盒，是將1枚的絕 緣薄片187的全周挾固在薄型電池182及外裝殼181之間 〇 但是，本發明的電池盒，並非必定需要將絕緣薄片的 全周緣放入薄型電池及外裝殼之間地挾固。如第1 9圖所 示，將絕緣薄片1 97的一部分的緣部放入薄型電池1 92及 外裝殼1 9 1之間地挾固，並將一部分接合固定在外裝殻 191的表面也可以。將絕緣薄片197的緣部的一部分從薄 型電池192接合在外裝殼191的表面的電池盒，因爲可以 -20- (16) (16)200306029 將外裝殼191及薄型電池192隔著絕緣薄片197 —體地連 結，所以具有可以確實地防止這些位置偏離的特長。 進一步，連結第1殼1A、151A及第2殻1B、151B 的外裝殼1、151，是在位於薄型電池2、152的底面的端 部殼部lb、151b設成使取出用爪18、1518突出。第3圖 及第17圖的電池盒，是設成將取出用爪18、1518突出於 第2殼IB、151B。第2殼IB、151B，因爲是在第1殻1A 、151A由熔接等的方法確實地被連結，所以可以使設有 取出用爪18、1518的部分具有充分的強度。特別是，如 第3圖所示的剖面圖，在端部殼部lb的內面，設置供嵌 入熔接在薄型電池2的底面的簧片15用的凹部19，在此 凹部19將簧片15嵌入的構造、及由標籤等的絕緣薄片7 連結薄型電池2及外裝殼1的構造，是具有：可以確實地 連結外裝殼1及薄型電池2，且可以確實地連結取出用爪 18的外裝殼1及薄型電池2的特長。 以上，雖說明了本發明的實施例，但本發明的具體地 結構並不限定於此實施例，不脫離本發明的實質的範圍的 設計變更等也是包含於本發明中。 【圖式簡單說明】 [第1圖]本發明的實施例的電池盒的分解立體圖 [第2圖]第1圖所示的電池盒的橫斷面圖 [第3圖]第1圖所示的電池盒的縱剖面圖 [第4圖]第1圖所示的電池盒的電路圖 -21 - (17) (17)200306029 [第5圖]顯示接觸子支架連結在薄型電池的狀態的部 分剖面前視圖 [第6圖]顯示薄型電池及絕緣環的分解立體圖 [第7圖]顯示將絕緣環層疊在薄型電池的電池端面的 狀態的前視圖 [第8圖]顯示將絕緣環層疊在薄型電池的電池端面的 狀態的平面圖 [第9圖]將2個保護元件連結在薄型電池的狀態的前 視圖 [第10圖]第1圖所示的電池盒的背面圖 [第11圖]本發明的其他實施例的電池盒的平面圖 [第12圖]第11圖所示的電池盒的橫斷面圖 [第13圖]接合在第12圖所示的電池盒的絕緣薄片的 剖面圖 [第14圖]本發明的其他實施例的電池盒的平面圖 [第15圖]本發明的其他實施例的電池盒的分解立體 圖 [第16圖]第15圖所示的電池盒的橫斷面圖 [第17圖]第15圖所示的電池盒的縱剖面圖 [第18圖]本發明的其他實施例的電池盒的橫斷面圖 [第19圖]本發明的其他實施例的電池盒的橫斷面圖 [圖號說明] 1…外裝殼 la…側面殼部 lb…端部殼部 -22- (18) (18)200306029 1A…第1殼 1Β…第2殼 2···薄型電池 2A···中央突出部 2B…帽部 3…開口部 4…保持溝 5···接觸子支架 6…絕緣材 7···絕緣薄片 7A…電池被覆部 7B…盒被覆部 7C…段差部 8···輸出接觸子 9…絕緣環 10…凸部電極 11…貫通孔 12…保護元件 1 3…電極窗 14…收納部 15…簧片 16…嵌合凸部 17…側壁 1 8…取出用爪 19…凹部 20…非平面部 -23-Further, the insulating sheet 7 may be bonded to the thin battery 2 and the outer case 1 and covered. The insulating sheet 7 shown in Fig. 2 is joined in a state in which the outer peripheral portion is covered with the opening end portion of the opening portion 3 of the outer case 1. As described above, the structure in which the outer peripheral portion of the insulating sheet 7 is joined to the thin battery 2 has a feature that the outer case 1 and the thin battery 2 can be integrally connected with the insulating sheet 7 interposed therebetween, so that these positions can be reliably prevented . Furthermore, a battery case having a non-planar portion such as unevenness or a step on the joint surface of the thin battery and the outer case to which the insulating sheet is bonded can be bonded to the joint surface by the insulating sheet formed along the non-planar portion. In the battery case shown in FIGS. 11 and 12, the outer case 1 1 1 is designed to be thicker than the outer peripheral portion of the thin battery 112, and a stepped non-planar portion 1 1 is formed in these boundary portions. 20. As shown in FIG. 13, this battery case is an insulating sheet 1 1 7 in which the battery covering portion 117A in the center portion is formed to be more recessed than the case covering portion 117B in the outer peripheral portion, and is joined to a thin battery 1 1 2 And the joint surface of the outer shell 1 1 1. However, as shown in FIG. 14, the battery case 1 is designed to be thinner than the outer periphery of the thin battery 2. The battery case 147A can be formed so that the battery covering portion 147A projects more outwardly than the case covering portion 147B. The insulating sheet 147 is bonded to the bonding surfaces of the thin battery 142 and the outer case 141. However, in FIGS. 11 to 13, 111A indicates the first case, 111B indicates the second case, 1118 indicates the claw for taking out, and in FIG. 14, 141A indicates the first case, and 141B indicates the second case. 147C -17- (13) (13) 200306029 indicates the step difference portion, and 1420 indicates the non-planar portion. The insulating sheet 117 shown in FIGS. 12 and 13 is formed between the battery covering portion 117A of the outer can of the thin battery 112 and the case covering portion 11 7B of the outer case 111. A stepped portion 117C in a planar shape. This stepped portion 117C is formed between the battery covering portion 117A and the case covering portion 117B so as to face the non-planar portion 1120 of the joint surface. The insulating sheet 117 having this shape can be processed into a stepped shape by punching a flat sheet, for example. Since the battery case shown in FIG. 11 is formed with the non-planar portion 11 20 along the opening portion 11 13 of the exterior case 111, the step portion 1 1 7C of the insulating sheet 1 1 7 is formed along the opening portion 1 1 3. The insulating sheet 11 7 having this shape is bonded to the thin battery 112 and the outer case 111 in a state where the non-planar step portion 11 7C is disposed on the non-planar portion 1120 of the bonding surface, and has the following characteristics: Wrinkles are formed in this part and they can be quickly joined. In particular, the insulating sheet 117 shown in FIG. 12 has the stepped portion 117C as an inclined surface, so that the inclined surface can be joined by absorbing the deviation of the forward and backward directions, and the portion can be made inconspicuous. Specialty. Furthermore, the non-planar shapes formed along the non-planar portions 1 120 and 1420 can be subjected to surface treatment that is not noticeable for the insulating sheets 117 and 147. Although this surface treatment is not shown in the figure, it can be represented by a plurality of parallel lines or an infinite number of curves without directivity, or it can be decorated with different shades or different colors. These surface treatments make the non-planar shapes of the insulating sheets 117 and 147 inconspicuous by using the illusion of eyes such as light and shade or color. In this way, the non-planar shape of the insulating sheets 1 1 7 and 1 47 can be made inconspicuous. -18- (14) (14) 200306029 The battery box has the characteristics of good appearance. 15 to 19 show a thin battery according to another embodiment. In the thin battery 152 shown in these figures, an insulating sheet 157 such as a label is bonded and covered on the surface. However, for the following embodiments, for the same constituent elements as the embodiments shown in FIGS. 1 to 6 described above, the same symbols are attached to the lower digits except the upper two digits, and descriptions thereof are omitted. The insulating sheet 157 to which the thin battery 152 is joined is a cap portion 152B of the thin battery 152 and the battery end face can be used as an insulating member. The cap portion 152B of the thin battery 2 refers to a portion that closes the opening of the exterior can of the thin battery 152, that is, the battery end surface and its peripheral portion on the side having the convex electrode 1510. The battery case shown in FIG. 17 covers the end portion of the insulating sheet 157 bonded to the surface of the thin battery 152 to the cap portion 1 5 2B. That is, the insulating sheet 157 is formed so as to protrude from the end edge of the exterior can in the protruding direction of the convex electrode 151. In this way, the insulating sheet 157 extended to the cap portion 152B of the thin battery 152 can effectively insulate the protruding electrode 1510 or the battery end surface. The insulating sheet 1 57 is a plastic film. However, the insulating sheet may be any sheet made of insulating material. For example, a person who plated the surface of a plastic film with metal, or a person who covered the surface of a metal foil with an insulating film such as plastic. The insulating sheet 157 is provided with an adhesive layer on a joint surface. The insulating sheet 1 57 can be bonded to the surface of the thin battery 152 through an adhesive layer without using an adhesive. However, the insulating sheet 157 can be bonded to the surface of the thin battery 152 through a bonding agent. In addition, the joint surface or -19- (15) (15) 200306029 as a whole of a thermoplastic plastic film insulation sheet can be joined by ultrasonic welding or by welding on the surface of a thin battery. As shown in Fig. 15 and Fig. 16, the battery case can cover the surface of the thin battery 152 with two insulating sheets 157. In addition, one U-shaped insulating sheet can be bent and bonded to the thin battery to cover both sides of the thin battery. In the battery case shown in the cross-sectional view in FIG. 18, one insulating sheet 1 87 is curved along the sheet-side U-shape of the thin battery 1 82 to cover both sides of the thin battery 182. The insulating sheet 157 is placed between the thin battery 152 and the outer case 151 and is fixed by the thin battery 152 and the outer case 151. For the battery case, it is preferable that the entire periphery of the insulating sheet 157 is fixed between the thin battery 152 and the outer case 151. In this battery case, the insulating sheet 1 57 can be prevented from peeling from the edge portion in an ideal state. In the battery case shown in FIGS. 15 and 16, the entire circumference of two insulating sheets 157 is fixed between the thin battery 152 and the outer case 151. The battery case in FIG. 18 is obtained by fixing the entire periphery of one insulating sheet 187 between the thin battery 182 and the outer case 181. However, the battery case of the present invention does not necessarily require the entire periphery of the insulating sheet. Place it between the thin battery and the case. As shown in FIG. 19, a part of the edge of the insulating sheet 1 97 may be fixed between the thin battery 1 92 and the outer case 1 91, and a part may be bonded and fixed to the surface of the outer case 191. . A battery case in which a part of the edge of the insulating sheet 197 is joined from the thin battery 192 to the surface of the outer case 191, because the outer case 191 and the thin battery 192 can be separated by the insulating sheet 197 from -20- (16) (16) 200306029 Because they are physically connected, they have the feature that they can reliably prevent these positional deviations. Further, the outer casings 1 and 151 connecting the first casings 1A and 151A and the second casings 1B and 151B are provided at the end casing portions 1b and 151b on the bottom surface of the thin battery 2 and 152 so that the extraction claws 18, 1518 stands out. The battery cases of Figs. 3 and 17 are provided so that the extraction claws 18 and 1518 protrude from the second cases IB and 151B. The second shells IB and 151B are securely connected to the first shells 1A and 151A by a method such as welding, so that the portions provided with the extraction claws 18 and 1518 can have sufficient strength. In particular, as shown in the cross-sectional view in FIG. 3, a recess 19 for inserting a reed 15 welded to the bottom surface of the thin battery 2 is provided on the inner surface of the end case lb. Here, the reed 15 is formed by the recess 19 The built-in structure and the structure in which the thin battery 2 and the outer case 1 are connected by an insulating sheet 7 such as a label have a structure in which the outer case 1 and the thin battery 2 can be reliably connected, and the extraction claw 18 can be reliably connected. Features of the outer case 1 and the thin battery 2. Although the embodiment of the present invention has been described above, the specific structure of the present invention is not limited to this embodiment, and design changes and the like without departing from the scope of the present invention are also included in the present invention. [Brief description of the drawings] [Figure 1] An exploded perspective view of a battery case according to an embodiment of the present invention [Figure 2] A cross-sectional view of the battery case shown in Figure 1 [Figure 3] Figure 1 Sectional view of the battery case [Figure 4] Circuit diagram of the battery case shown in Figure -21-(17) (17) 200306029 [Figure 5] Partial section showing a state where the contact sub-bracket is connected to a thin battery Front view [Fig. 6] An exploded perspective view showing a thin battery and an insulating ring [Fig. 7] A front view showing a state in which an insulating ring is laminated on a battery end face of the thin battery [Fig. 8] shows an insulating ring in a thin battery Plan view of the state of the battery end face [Fig. 9] Front view of a state where two protective elements are connected to a thin battery [Fig. 10] Rear view of the battery case shown in Fig. 1 [Fig. 11] Plan view of a battery case according to another embodiment [Fig. 12] Cross-sectional view of the battery case shown in Fig. 11 [Fig. 13] Sectional view of an insulating sheet joined to the battery case shown in Fig. 12 [Fig. 14 Figure] A plan view of a battery case according to another embodiment of the present invention [Fig. 15] Analysis of a battery case according to another embodiment of the present invention Perspective view [FIG. 16] Cross-sectional view of the battery case shown in FIG. 15 [FIG. 17] Vertical cross-sectional view of the battery case shown in FIG. 15 [FIG. 18] Battery case according to another embodiment of the present invention Cross-sectional view [FIG. 19] Cross-sectional view of a battery case according to another embodiment of the present invention [illustration of drawing number] 1 ... outer casing la ... side casing lb ... end casing -22- (18 ) (18) 200306029 1A ... 1st case 1B ... 2nd case 2 ... thin battery 2A ... central protrusion 2B ... cap 3 ... opening 4 ... retaining groove 5 ... contact sub-bracket 6 ... insulation Material 7 ... Insulation sheet 7A ... Battery cover 7B ... Box cover 7C ... Segment 8 ... Output contact 9 ... Insulation ring 10 ... Protrusion electrode 11 ... Through hole 12 ... Protection element 1 3 ... Electrode window 14 ... receiving part 15 ... reed 16 ... fitting convex part 17 ... side wall 1 8 ... removing claw 19 ... recessed part 20 ... non-planar part -23-