200919807 九、發明說明： 【發明所屬之技術領域】 本發明係有關於將複數個電極板疊層而成的疊層型電 池’更詳而言之係有關於疊層型電池之集電構造。 【先前技術】 近年來，隨著行動電話、筆記型電腦等行動資訊終端 逐漸高性能晝，再加上利用電池作為汽車之驅動源的技術 之進展’而出現了對於更高容量、高輸出化、輕量化且兼 具良好安全性之電池的需求。 —曰$層型電池具有於將電極板多層地進行疊層而易於高 容量化的特徵。一般而言，電池係具有使於電極本體所產 生的電力集合而引導至外部端子的集電路徑，但疊層型電 池多使用與構成電極本體的電極芯體(集電板）連續^隹電 片_作為將各電極板所產生的電力引導至外部端子ς方 ^與電極芯體連續的集電片由於與電極芯體之間沒有連 接處（junction)，故有集電效率較佳的優點。 :而，.若電極的疊層數增加’則由於集電片之數量也 ⑽增加，故集電片群本身之體積和將_接 + Γ 不但造成電池小型化的阻礙，並且也是隼 電片的剝離原因。 也疋集 ，疊層型電池的技術而言，例如❻^ 獻1、2所§己載的技術。專利文獻 ^ 2] 成係例如有關於各電、y 有^引線的疊層式角型電池。於該專利文獻 了於豐層有突片的電極引線外 ^ 卜側％繞而使複數個電相 320531 5 200919807 線集束的集電構造。該文獻1之隼雷 電池内部。 -電片係不彎曲地收納於 專利文獻2係有關將位於正朽名’含上 ( 、- %正極和負極間的分隔片 (separator)互相固定之形態的電池 — ^丄 _ 專利文獻2的目的係 精由固定分隔片而抑制電極之偽 , 偏移4，而非用以縮小集電 部分之空間體積。 八 專利文獻3係關於各隼雷片在M 予AAu 合市电片係错由集電梳（comb)而集 電的技術。該技術係需要隼雷栌邮 晋巿之收納空間，因此相對 = =量無益部分的體積。另外，集電梳的重 1也會使電池全體的重量增加r 專利文獻4係提案—種集電構造，於電極端部設有 ^物質層的未形成部，以該部分作為與集電片相同作用 者，於該活性物質未形成部設置導通部，且藉此進行率電。 該集電構造係將正極集電與負極集電分離為電池之血 下部者。於該文獻中，並未記載有僅以電池之上部或下部 之一方進行兩極之集電的構造。 [專利文獻1]曰本國特開平8_1674〇8號公報 [專利文獻2]日本國特開平1〇_645〇6號公報 [專利文獻3]日本國特開平u_25951號公報 [專利文獻4]日本國特開2〇〇〇_1〇〇414號公報 【發明内容】 (發明所欲解決的課題） ★本發明之目的係提供一種疊層型電池，其係對於 沒有助益的無法利用办\ 不」用二間（dead space)少，體積能源密度 320531 6 200919807 高，且穩定性佳。 (解決課題的手段） 為了解決上述課題’本發明 i a :徵為係具有:堆叠電極體，係將具有华電片 及負極電極板以在正負電極板間設置有分隔片且：電拐 極性之集電片朝同-方向突出的方式交H片且使同-電極端子，係經由前述隼電％ 且曰，以及外部 ::而且’於該疊層型電池中，將從前述…，極 面犬出的同一極性之集電 個體之側 割後之複數個分割隼v為複數個束’而將該分 刀口J果電片群分別連接 於前述本發明構成1之疊層型電池中，2接點。 ί集電片群之各者，係於從俯視方向觀看之極性 璺電極體相同的位置導屮— +面與則述堆 無法利用空間減少，相對地 下將上述之構造更詳細說明：〶池之體積能源密度。以 Α—Γ往’從同一極性之電極板所導出的隼電月将隹人 為一個而熔接於集電引”电片係木合成 電片群）會變厚。因此，㈣電片之束（以下，稱為集 度，而於集電片群之周圍足以對應該厚度的空間高 述構成…係將集;片的無法利用空間。於前 由於各個集電片群與將全集；;作群。 片群相較之下並 ’’’、 束的全厚度集電 電片群收容可:更有二;：比起將厚度較後的全厚度集 有政率的利用收容空間。冑此，可減少 320531 7 200919807 無用=法利用空間’結果即可提高電池之體積能源密 別連接於不同的連接點，由於厚度較 厚度較後的全厚度集電片群相較之下較易進行^ 業’故不易產生溶接後的剝離。從而 ^ 的可靠性。 」以楗歼電池 在此，前述的所謂「不同連接點」，係指八 所連接的場所不同。例如，係分 ：:;门片群 、(:广枚集電引線板的不同場所)、或複所 =數:集電引線板、複數個電極外部端子之下端部 者，思指連接目的地不會重複於丨個部位。 ）之各 ::述本發明構成⑴中’可使前述同—極性之 各者從俯視方向觀之 .出而形成構成（2)。 立置導 所謂「從俯視方向觀之為前述堆疊電極體之相同位 集“君爷之各者的集電片看來猶如重疊而成 如上所述之狀態排列的集電片之束:、 不會產生撓曲等故較好。又，所相「二、集束，且束起時 之疊層:向觀看其平面形狀而^俯視」係指從電極板 及負極電極::工:⑴::)中’亦可使前述正極電極板 之間沒有連接處有 若集電片為從成為電極板之構成構件:二：:)置 320531 200919807 ^ =接缝的集電料，則不但集電效果良好且 勻敌在不易羞生金屬疲勞等點上較好。 木4人度均 :述外中，亦可使前述疊層型電池於前 成為：二 集電片群之間具有集電引線板，而 成為别述複數個分割集電片群之各者又 板的構成（4)。 ；不同木電引線 電引:Γ冓：:，分割集電片群之各者係連接於不同的集 :用以收细可以使各個分割集電片群有效率地收容於 .:以收納集電片等之收容空間(發電要件盘 = 、，方式進行分配。藉此，可將群收 的收谷空間内，結料提昇了 另外，於前述構成(4)中，亦可為㈣ 集電片群係於同-極性之草 々構成（5).别述： 之側面朝相對於電極板疊；=崎述堆疊電極體 且將其各者連接前述不同的集電⑽板。〜為 於該構成中，係將集束有 相對於疊層方向為相反的方向4為;電片的集電片群朝 分割集電片分別連接至不。’且將2分割後的 内收容集電系要件。又彿 Τ在較小的收容空間 集電引線板，及其炫接部分電糸要件’係指集電片、 另外，於前述構成（1)中， 堆疊電極體之正負電極板群之如下的構成⑹：前述 片之位置的不同複數個類二方，係採用具有集電 之附有集電片的電極板，其集 320531 9 200919807 電片之位置係使相同集電片彼此 而構成1個集電片群，如上所、#、心、電極板豎層方向重疊 —之相鄰兩者間係互相隔離。^而形成的複數個集電片群 ’ f知技術的堆疊電極體係將 電極板疊層的構造’從電極板疊：置：置相同的 個重疊的集電片群，但於前述構成中，2隹:有1 位置不同的複數種類之附 係將…之设置 形成複數個從電極柘田爲^片的電極板予以疊層，而 ，43二 層方向看去彼此隔離的同-極性之 木電片群。若採用此構成 位注之 且可將1更八自丨在V私、/少木電片群本身之厚度， 〜、更刀d為设數個集電片群， 容於更小的收容空間内。 丁將市電片要件收 另外，於前述構成（6)中，亦可構 如夕、 於前述外部電極端子鱼、 、’、 之構成（7): n— 與述集電片群之間係具有隼電引绩 =前述互相隔離的同一極性之集 而連接於不同的集電引線板。 反的方向 於該構成中，彼此隔離的同一極性 雜 】：’係被導向相對於電極板之疊層方向 連接於不同的集電引線板，藉此可::：而 於較小的空間。 t打本电片群收納 _另外，於前述構成⑹中，亦可構成為 槿 於刚述外部電極端子與前述集電片群之㈣ =(): 板；將於彼此隔雜的π '、”有集電引線 個，兮八 同—極性之集電片群之各者分科A , • μ刀告'J後的細分割集電片群係被導向相對於電極板之 320531 200919807 且層方向互為相反的方向而 於矽播# 士 不同的集電引線板。 冓成t，複數個集電片 極板之疊層方向互為相反的方向分^者=向相對於電 將集電系要件收容於較小的收容心：，因此可合理地 尹的集電片群之數量4n(2<n)，；；=°又’若於此構成 月⑽連接端）之平均厚度成為全集電 厚^集采鮮之 (發明效果） 野々与度的1/2η。 如以上所說明的’依據本發明，可將集 ι 納於更小體積的收容空間内， ，、 體積能源密度。另外，二：果即可“疊層型電池之 之接合不良，故相對地可提升電池之可靠性易產生-電片 【實施方式】 依據實施例，說明實施本發明的最佳實施形態。又， 2明亚不限定於下述實施例，於不變更本發明之意旨的 乾圍内，可適當地變更而實施。 (第1實施例） 製作於1枚電極板裝附有、個集電片的正負電極板， 且將其交互㈣㈣作第1實施狀疊層㈣形鐘離子 (腕 ion)電池（厚度：18mm、寬度：65mm、高度：85叫。 以下依序說明該電池之製作方法。 [電極板的製作] 使用厚度20μπι的㈣作為芯材（集電板），將鐘金屬氧 化物材料（LiNi^MiimComCV.LiMnzO4:6:4)塗抹於鋁箱之 兩面，乾秌後，壓縮而形成厚度325μπι的長方形狀之負極 320531 11 200919807 板。 另一方面，使用厚度8μπι的銅箔作為芯材，將黑鉛 (graphite)塗佈於銅箔的兩面，乾燥後，壓縮而形成厚度 3 2 5 μιη的長方形狀之負極板。 [附有集電片之電極板的製作] 之後，在以上述方式製作正極板及負極板的同時，裁 斷出從電極板本體之短邊侧（寬度侧）突出1個集電片的形 狀。之後，去除集電片兩面之活性物質。如此，製作於第 1圖所示的於芯材和集電片之間沒有接缝的附集電片之負 極板（與第1圖相同）。 於第1圖中，符號2為正極活性物質層，3為正極集 電片。該附集電片正極板之正極本體部的大小，係57mmx 71111111(長度），集電片之大小為2〇111111(寬度）><3〇111111(突出長 度）。另外，前述附集電片負極板之負極本體部之大小係 60mm(寬度）χ 73.5mm(長度），集電片之大小為20mm(寬 度）x30mm(突出長度）。 [疊層型電池之組裝] 首先，將附有集電片的正極板之正極本體部，以厚度 22μιη、寬度 60mmx長度 73.5mm 的聚乙烯（polyethylene) 製分隔材挾持，將周邊熱熔接而製作以分隔片包覆正極本 體部的附有集電片的正極板。接著，準備厚度〇.3mm的聚 乙烯製絕緣性殼，於其中將以前述分隔片包覆的附有集電 片的正極板23枚與前述附有集電片的負極板24枚以從疊 層方向看來正負集電片係位置於疊層體之同一邊之兩角落 12 320531 200919807 的方式交互進行疊層。以下，將如上所述地將正負電極板 交互疊層所得者稱為堆疊（stack)電極體。 於第2圖示有以上述方式製作的堆疊電極體10之示意 圖。第2圖之符號1為正極板，3為正極集電片，4為負極 板’ 5為負極集電板^ 6為分隔片。 將從堆疊電極體本體之侧面突出的正極集電片（23枚） 分為12牧與11牧，如第3圖所示的束起，將如上所述而 分隔的2個分割集電片群7、8，如第4圖所示地朝與電極 板疊層方向相反的方向彎曲，將其彼此之前端分別溶接於 厚度0.15mm的2張鋁製集電引線板11、12。又，第4圖 為從第2圖之箭號A方向朝堆疊電極體之側面（正極集電 片）觀看的不意圖符號9係表不堆璺電極體本體。 負極集電片可使用厚度〇.15mm的錄（nickel)製集電引 線板，可與正極集電片時相同地熔接。 之後，將放有堆疊電極體的絕緣殼收納於鋁製的電池 罐（19)，且將正負集電引線板熔接於正負電極外部端子之 下端部。正負電極外部端子係設置於封口板。之後，將封 口板嵌合於電池罐開口，以雷射熔接嵌合部分，從封口板 之電解液注入孔將電解液注液至電池罐内。於電解液之注 液後，以鋁製的栓塞住注入孔而將電池完全密閉，完成理 論容量1 〇Ah之第1實施例的疊層型鋰離子電池（其外形示 於第9圖）。 採用於碳酸伸乙酉旨（ethylene carbonate)/碳酸丙稀酯 (propylene carbonate)/碳酸二曱酉旨（dimethyl carbonate)^ 13 320531 200919807 35/5/60(於25〇C下的體積比）溶液中溶解了 i〇m濃 UPF6之非水電解液作為上述電解液。該電池之電極ς本 體上表面與封口板下表面之間的距離為5随。該高度 的空間即為收容集電系要件的收容空間。 於第！實施例之電池中，將正負集電片群分割為 而形成U枚或U枚的分割集電片群，且將其炫接於 引線板，但藉由將其分為分隔集電片群而使於溶接部：的 度U 4圖之t)僅為將同—極性之集電片束在一起時[Technical Field] The present invention relates to a laminated battery in which a plurality of electrode plates are laminated. More specifically, it relates to a current collecting structure of a laminated battery. [Prior Art] In recent years, with the increasing performance of mobile information terminals such as mobile phones and notebook computers, and the advancement of technology using batteries as the driving source of automobiles, there has been a emergence of higher capacity and higher output. The need for a battery that is lightweight and has good safety. The 曰$ layer type battery has a feature that it is easy to increase the capacity by laminating the electrode sheets in multiple layers. In general, the battery has a collecting path for guiding the electric power generated by the electrode main body to the external terminal, but the laminated battery is often used continuously with the electrode core (collector) constituting the electrode main body. The sheet _ as a current collecting sheet which leads the electric power generated by each electrode plate to the external terminal and is continuous with the electrode core has a advantage of better current collecting efficiency because there is no junction with the electrode core. . However, if the number of laminated layers of the electrodes is increased, the number of the current collecting sheets is also increased (10), so that the volume of the current collecting sheet group itself and the _ 接+ Γ not only hinder the miniaturization of the battery, but also the 隼 隼 片The reason for the stripping. Also, the technology of the laminated battery is, for example, the technology of §1 and 2. Patent Document ^ 2] For example, there is a laminated angular battery in which each electric and y has a lead. In this patent document, the collector lead of the bump layer is wound around the electrode layer to make a plurality of electrical phases 320531 5 200919807 line bundle current collecting structure. This document 1 is inside the battery. In the patent document 2, a battery in a form in which a separator is placed between the positive electrode and the negative electrode, and the separator is fixed. The purpose is to suppress the pseudo-, offset 4 of the electrode by the fixed separator, instead of reducing the spatial volume of the collector portion. 8 Patent Document 3 relates to each of the 隼 片 in M to AAu. The technology of collecting comb (comb) and collecting electricity. This technology requires the storage space of the 隼 栌 栌 , , , , , , , , , , , , , , , , , , = = = = = = = = = = = = = = = = = = = Weight increase r Patent Document 4 proposes a current collecting structure in which an unformed portion of a material layer is provided at an electrode end portion, and the portion is used as a current collector sheet, and a conductive portion is provided in an unformed portion of the active material. The current collecting structure separates the positive electrode current collecting and the negative electrode current collecting into the lower part of the blood cell of the battery. In this document, it is not described that only one of the upper part or the lower part of the battery is used for the two poles. Structure of current collection. [Patent Document 1] Japanese Patent Laid-Open Publication No. Hei. No. Hei. No. Hei. No. 5, No. 5, pp. 〇〇 〇〇 〇〇 〇〇 发明 〇〇 〇〇 〇〇 ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ Space) is small, the volume energy density is 320531 6 200919807 is high, and the stability is good. (Means for solving the problem) In order to solve the above problem, the present invention includes: a stacked electrode body having a photovoltaic piece and a negative electrode The plate is provided with a separator between the positive and negative electrode plates and the collector piece of the polarity of the electric turns to the H-piece in a manner of protruding in the same direction, and the same-electrode terminal is passed through the aforementioned electric power and 曰, and the outer:: Further, in the laminated battery, the plurality of divided 隼vs which are cut from the side of the collector of the same polarity of the above-mentioned extreme poles are a plurality of bundles' Groups are respectively connected to the aforementioned stack of the present invention In the type of battery, there are 2 contacts. ί Each of the collector chips is guided by the same position as the polar 璺 electrode body viewed from the top view direction - the surface and the heap are not used, and the above is the opposite. The structure is described in more detail: the volumetric energy density of the Dianchi Lake. The 隼-Γ to 'from the electrode plate of the same polarity will be smashed into a collector and the wire will be welded to the collector. Therefore, (4) the bundle of the electric film (hereinafter, referred to as the degree of concentration, and the space around the current collecting sheet group is sufficient to correspond to the space of the thickness to be described as a set; the set is not available; Collector group and will be the complete set;; group. Compared with the group and ''', the full thickness of the bundle can be accommodated in the group: more than two: compared to the thickness of the later full thickness set The use of the rate of government. Therefore, it can be reduced by 320531 7 200919807 useless = method of using space 'the result can increase the volume of the battery energy is connected to different connection points, because the thickness is thinner than the thickness of the full thickness of the collector group It is not easy to cause peeling after fusion. Thus ^ reliability.楗歼Battery Here, the above-mentioned "different connection point" means that the eight connected places are different. For example, the system is divided into::; the door group, (: different places of the wide collector lead plate), or the complex = number: the collector lead plate, the lower end of the plurality of electrode external terminals, thinking of the connection destination Will not repeat in one part. Each of the configurations (1) of the present invention can be formed by observing the above-mentioned same-polarity from the plan view. The vertical guide is called "the same bit set of the stacked electrode body viewed from the top view direction." The collector sheets of each of the kings seem to overlap as a bundle of current collectors arranged as described above: It is better to produce deflection. Further, the phase "two, bundling, and lamination at the time of bunching: looking into the planar shape thereof and looking down" means that the positive electrode can also be made from the electrode plate and the negative electrode:: work: (1)::) There is no connection between the plates. If the collector piece is a component from the electrode plate: 2::) Set 320531 200919807 ^ = The collector material of the joint, not only the collector effect is good, but also the enemy is not easy to shy metal. Fatigue is better. The average degree of the wood is as follows: the above-mentioned laminated battery can be made to have a current collecting lead plate between the two collecting chip groups, and each of the plurality of divided collecting current group groups The composition of the board (4). Different wood electric lead wires: Γ冓::, each of the divided collector chips group is connected to different sets: for the purpose of finening, each divided collector chip group can be efficiently accommodated in: The accommodating space of the electric power piece (the power generation component disk = , and the mode is distributed. Thereby, the material can be increased in the grain receiving space of the group, and in the above configuration (4), it is also possible to (4) power collecting. The film group is composed of the same-polar grasshopper (5). The other side: the side faces toward the electrode plate stack; = the stacked electrode bodies are stacked and each of them is connected to the different current collecting (10) plates. In the configuration, the bundle 4 has a direction 4 opposite to the lamination direction; the collector patch group of the electric sheet is connected to the divided collector tabs, respectively, and the two-divided inner housing current collector components are housed. In addition, in the case of the above-mentioned configuration (1), the positive and negative electrode plate groups of the stacked electrode body are as follows. Composition (6): The different plurals of the positions of the aforementioned slices are based on the set with the collection of electricity. The electrode plate of the chip, the set of 320531 9 200919807, the position of the electric piece is such that the same current collecting piece and each other constitute one collecting piece group, as described above, #, heart, electrode plate overlap in the vertical direction - the adjacent two The plurality of collector chip groups formed by the separation of the electrode stacks of the electrode assembly are stacked from the electrode plates: the same overlapping collector segments are placed, but In the above configuration, 2隹: a plurality of types of attachments having different positions are arranged to form a plurality of electrode plates which are stacked from the electrode field, and the layers of the second layer are separated from each other. - Polar wood chip group. If this frame is used, it can be used to make the thickness of the V private, / Shaomu electric film group itself, ~, more knife d is set several collector chips group It is accommodated in a smaller accommodating space. In the above-mentioned composition (6), the composition of the external electrode terminal fish, ', ', (7): n- Between the set of collectors and the collector group, there is a set of the same polarity that is isolated from each other. Connected to different collector lead plates. The opposite direction in this configuration, the same polarity miscellaneously isolated from each other: ' is guided to the different collector tabs with respect to the lamination direction of the electrode plates, thereby: In the case of the above-mentioned configuration (6), it is also possible to form a (4) = () plate of the external electrode terminal and the current collector group; The π ', "has a collection lead" that will be intertwined with each other, and the eight-same-polar collectors of the group are divided into sections A, • The micro-segmented collectors group after the μJ is directed to the relative In the electrode plate 320531 200919807 and the layer direction is opposite to each other, and the different current collector lead plates are different from each other. 冓成t, the stacking directions of the plurality of collector plates are opposite to each other. = to accommodate the collector element in a relatively small receiving body with respect to electricity: therefore, the number of the collector chips group that can reasonably be Yin is 4n(2<n),;;=° and 'if this constitutes the month (10) The average thickness of the connection end becomes the total collection thickness and the collection effect (the effect of the invention) 1/2 η of the wild 々. As described above, according to the present invention, the collection can be concentrated in a smaller volume of the accommodating space, and the volumetric energy density. In addition, it can be said that "the laminated battery has poor bonding, so that the reliability of the battery can be relatively easily generated - the electric film". Embodiments The best embodiment for carrying out the invention will be described based on the embodiments. (2) The present invention is not limited to the following embodiments, and can be appropriately changed and changed without changing the scope of the present invention. (First embodiment) It is produced by attaching one electrode plate to one collector. The positive and negative electrode plates of the sheet, and the interaction (4) and (4) are used as the first embodiment (4)-shaped clock ion (wrist ion) battery (thickness: 18 mm, width: 65 mm, height: 85). The following describes the manufacturing method of the battery. [Production of Electrode Plate] Using a thickness of 20 μm (4) as a core material (collector plate), a clock metal oxide material (LiNi^MiimComCV.LiMnzO4:6:4) was applied to both sides of the aluminum box, dried, and compressed. A rectangular negative electrode 320531 11 200919807 having a thickness of 325 μm was formed. On the other hand, a copper foil having a thickness of 8 μm was used as a core material, and black graphite was applied to both surfaces of the copper foil, dried, and compressed to form a thickness of 3 2 5 μιη rectangular In the case of the positive electrode plate and the negative electrode plate, the positive electrode plate and the negative electrode plate are formed as described above, and one set is protruded from the short side (width side) of the electrode plate body. The shape of the electric sheet. Thereafter, the active material on both sides of the current collecting sheet is removed. Thus, the negative electrode sheet of the current collecting sheet having no seam between the core material and the current collecting sheet shown in Fig. 1 is produced (with the first In the first figure, reference numeral 2 denotes a positive electrode active material layer, and 3 denotes a positive electrode current collecting sheet. The positive electrode body portion of the positive electrode plate of the current collecting plate is 57 mm x 71111111 (length), and the current collecting sheet The size is 2〇111111 (width)><3〇111111 (protruding length). In addition, the size of the negative electrode body portion of the negative electrode plate of the above-mentioned collector sheet is 60 mm (width) χ 73.5 mm (length), and the current collecting piece The size is 20 mm (width) x 30 mm (protruding length). [Assembly of laminated battery] First, the positive electrode body portion of the positive electrode plate with the current collecting tab is made of polyethylene having a thickness of 22 μm and a width of 60 mm x length of 73.5 mm ( Polyethylene) made of separators and heat-sealed A positive electrode plate with a current collector sheet covering the positive electrode body portion is covered with a separator sheet. Next, a polyethylene insulating shell having a thickness of 〇3 mm is prepared, and a positive electrode with a current collector sheet covered with the separator sheet is prepared therein. The plate 23 and the negative electrode plate 24 with the current collector sheet described above are alternately laminated in such a manner that the positive and negative collector sheets are positioned at the same corners of the same side of the laminate 12 320531 200919807 from the lamination direction. The one obtained by alternately laminating positive and negative electrode plates as described above is referred to as a stack electrode body. In the second drawing, there is shown a schematic view of the stacked electrode body 10 produced in the above manner. The symbol 1 in Fig. 2 is a positive electrode plate, 3 is a positive electrode current collecting plate, and 4 is a negative electrode plate '5 is a negative electrode current collecting plate ^6 is a separator. The positive electrode current collecting tabs (23 pieces) protruding from the side surface of the stacked electrode body body are divided into 12 grazing and 11 grazing, and as shown in FIG. 3, two divided collecting blocks group separated as described above are divided. 7, 8 is bent in a direction opposite to the lamination direction of the electrode sheets as shown in Fig. 4, and the front ends of the electrodes are respectively welded to the two aluminum current collecting lead plates 11, 12 having a thickness of 0.15 mm. Further, Fig. 4 is a view showing an unintended symbol 9 which is viewed from the side of the arrow A of Fig. 2 toward the side surface (positive electrode collector) of the stacked electrode body. The negative electrode current collecting tab can be made of a nickel-made current collecting lead plate having a thickness of 1515 mm, which can be welded in the same manner as in the case of the positive electrode current collecting sheet. Thereafter, the insulating case in which the stacked electrode bodies are placed is housed in a battery can (19) made of aluminum, and the positive and negative current collecting lead plates are welded to the lower end portions of the external terminals of the positive and negative electrodes. The positive and negative electrode external terminals are disposed on the sealing plate. Thereafter, the sealing plate is fitted into the battery can opening, and the fitting portion is laser-welded, and the electrolyte is injected into the battery can from the electrolyte injection hole of the sealing plate. After the electrolyte solution was injected, the injection hole was plugged with an aluminum plug to completely seal the battery, and the laminated lithium ion battery of the first embodiment having a theoretical capacity of 1 〇 Ah was completed (the outer shape of which is shown in Fig. 9). Used in ethylene carbonate / propylene carbonate / dimethyl carbonate ^ 13 320531 200919807 35/5/60 (volume ratio at 25 ° C) solution A non-aqueous electrolyte solution in which i〇m is concentrated in UPF6 is dissolved as the above electrolyte solution. The distance between the upper surface of the electrode of the battery and the lower surface of the sealing plate is 5. The space of this height is the accommodating space for accommodating the elements of the collector system. In the first! In the battery of the embodiment, the positive and negative collector chip groups are divided into U or U divided divided collector groups, and are spliced to the lead plate, but by dividing them into separate collector chips groups. The degree of U 4 in the fusion joint: t) is only when the current-polarity collector sheets are bundled together
Si的右。’此，已確認可於高度—的收納空 pi隹^收容集電系要件。另外，已確認可藉由分為分 "本電片鮮，而使對於集電引線板之溶接更為堅固。 八幻又’於該第1實施例中，雖將集電片群分割為2,但 刀割不限於分割為2。例如，亦可分 一 別熔接於隼恭引峻招。 ° 將，、各者分 寡而比即分割為幾，端視疊層枚數之多. 的溶接如此進行之必要性與因增力°分割次數而增大 的熔接作業勞力等而決定即可。 曰人 (第2實施例）Si's right. Here, it has been confirmed that the height of the storage space can be accommodated in the storage system. In addition, it has been confirmed that the fusion of the current collecting lead plates can be made stronger by dividing the sub-sections into "fresh". In the first embodiment, although the current collecting sheet group is divided into two, the cutting is not limited to being divided into two. For example, it is also possible to weld together in a slap in the face. °, and each of them is divided into several, and the number of the number of laminated layers is increased. The necessity of the welding is determined by the necessity of the welding work force increased by the number of times of the force increase. . Deaf person (second embodiment)
圖所施例係使集電片寬度為1G随，料於第5、6 正極板1'電片Γ?位置相異的2種類之附有集電片的 絕緣=内及負極板C、D。且’與第1實施例同樣地於 疊層至1内’將以分隔片▲包覆的正極板A與負極板〇交互 與負極板。對’ f後再父互疊上以分隔片包覆的正極板B 的堆2,C，而製作交互疊層有正極板23與負極板24枚 隹且电極體Π(參照第7圖）。 320531 14 200919807 於第7圖示有前述堆疊電極體之部 之一部分）。於筮7面& 丨刀谰取圖（全積層 出長度描洛的“ 7作圖上的方便，而將集電片之突 n的較短。第7圖中，對於正極集 群（各12枚和11枚），將其每6枚或5枚即束為^作 極極電片群C及r>我，々， 卜對於負 束的方弋作群各枚)，則以每連續6枚即束為1 束的方式作為分割集電片群C]、「2、及 厂將該等之前端分聰接㈣應的集電引線板^至; :狀能將^疊電極體放人電池罐19。於第8圖示有此時的 17、 <將各集電引線板Α-1至D-2炫接於外部端子 口板14。^部A16,之後於電池罐19之開口散合封 後，從封口板丨4之注液孔進行電解液之注液， 卜的事項則與第1實施例相同，如此而製作於第9 圖所示的第2實施例之疊層型電池。 U於弟 隹^實施例之電池結果而言係將正極板、負極板之各個 *市ι u刀剔為4。因此，各個分割集電片群之厚产 與非分割形比較約薄為1/4，故不但可以更寬裕地於集電 糸要件之收納空間收納集電系要件，且也可使隹雷引 線板之熔接變得更加堅固。藉此，由於可縮小收納空間引 故也可提高電池之體積能量密度。 (第3實施例） 弟3實施例係以5mm為集電片寬度，而製作集電片有 4種不同設置位置的附集電片電極板。關於其他事項則大 概與前述第2實施例相同，而製作如第1〇圖所示的堆疊電 320531 15 200919807 極體。又，第ίο圖為以疊層部分之中央附近為中心而 電極體之一部分的示意圖。In the example shown in the figure, the width of the collector piece is 1G, and it is expected that the two types of the positive electrode plate of the 5th and 6th positive plates are different in insulation and inner and negative plates C and D. . Further, in the same manner as in the first embodiment, the positive electrode plate A covered with the separator ▲ and the negative electrode plate are alternately bonded to the negative electrode plate. After the piles 2 and C of the positive electrode sheets B covered with the separators are stacked on the other side, the anode sheets 23 and the negative electrode sheets 24 are alternately laminated and the electrode body is Π (refer to Fig. 7). . 320531 14 200919807 A part of the above-mentioned stacked electrode body is shown in Fig. 7).筮7面面& 丨刀谰图 (the full stacking of the length of the drawing "7 on the map is convenient, and the collector tab is shorter than the n. In Figure 7, for the positive cluster (12 Each of the 6th and 5th) is bundled as ^ for the extreme polar group C and r> I, 々, 卜, for each group of negative beams, for each successive 6 That is, the bundle is a bundle of the method as the divided collector group C], "2, and the factory is the front end of the convergence (4) should be the collector lead plate ^ to: : can be placed into the battery The tank 19 is shown in Fig. 8 at this time. < Each of the current collecting lead plates Α-1 to D-2 is spliced to the external terminal port plate 14. The portion A16 is then dispersed in the opening of the battery can 19 After the sealing, the liquid electrolyte is injected from the liquid injection hole of the sealing plate 4, and the same matters as in the first embodiment are obtained. Thus, the laminated battery of the second embodiment shown in Fig. 9 is produced. U Di Di 隹 ^ The battery results of the embodiment are based on the positive and negative plates of each of the positive and negative plates. Therefore, the thickness of each of the divided collectors is less than that of the non-segmented 1/4, so not only can be more adequate The storage space of the current collecting and splicing unit accommodates the current collecting system element, and the welding of the smashed lead plate can be further strengthened. Therefore, the volumetric energy density of the battery can be improved by reducing the storage space. (3) In the third embodiment, the collector tab electrode having four different mounting positions of the current collecting tab is formed with 5 mm as the width of the current collecting tab. The other matters are about the same as those of the second embodiment. A stacked electrode 320531 15 200919807 as shown in Fig. 1 is produced. Further, Fig. ui is a schematic view showing a part of the electrode body centered on the vicinity of the center of the laminated portion.
其次’將各集電片群與第2實施例相同地予以2分叫， 於同-極性之電極板中將其分為共8個分割集電片群刀，且 使其各自接合於對應的集電引線板。其他事項則與第2實 施例相同，如此而製作第3實施例之疊層型電池了 A 已確認於該實施例電池中可充裕地將集電系要件收納 於收納空間，以及使對於集電引線板的炫接更為堅固。 (第' 4貫施例） /第4實施例係如第11圖所示，採用寬度lGmm的集電 片形成於正負電極板相異之位置的2列集電片群（3、3 5、 5)。將前述者與第1實施例相同祕各行之大致中央分割 為2,而於同一極性之電極板形成共4個分割集電片群口。 將該分割集電片群之各者_於對應的集電引線板。其他 則與第1實施例相目，如此而製作第4實施例之疊層型電 2。又’各個分割集電片群舆集電引線板之連接狀態係與 弟4圖相同。 已確認於該實施例電池令可充裕地將集電系要件收納 於收納空間’以及使對於集電弓丨線板的溶接更為堅固。 (第1比較例） 於弟1比較例中，使用與於前述第丨實施例所製作者 相同地如第2圖所示之堆疊電極體，如第12圖所示，將同 -極性之集電片群完全不進行分割地集合成一個，且將其 溶接至集電引線板。除此之外的事項則與前述第i實施例 320531 16 200919807 相同，如此而试作苐1比較例之疊層型電池。 結果，難以將集電系要件收納於高度5mm的收納空 間，也無法將封口板嵌合於電池罐開口。 二 [附註] 於前述實施例中，雖以疊層型鋰離子電池（二次電、'也 為例進行說明，但本發明並不限於適用在鐘離子電池。才 發明可適用於疊層型之各種電池，亦可適用於一次電、、也。 另外，於前述實施例中，雖使正負集電片從堆疊電極 :之同-側面突出，但也可使正負集電片從不同的側面突 二而：:情形中，即使僅對其中任何一方採用將集電片分 J而接5的方式，也可達到將其中—方之收納空間的縮小。 另外’於前述實施例中，雖於各個分割集電片群之各 的關係準備集電引線板，但亦可將分割集電片群 者为別接合於一枚集電引線板之不同接合點。 (屋業上之可利用性） Z树明，可減少為了收容集電系要件而於電 否又置的收容空間之體積蕤 度n ^ 提升電池之體積能源密 度攸而，於產業上具有高可利用性。 【圖式簡單說明】 :'圖Λ第1實_之附有集電片之正極板的示意圖。 突出裝態的示意圖。 h電極體側面之集電片 f”為示有將集電片彼此集束之過程的圖。 弟圖為不有將第1實施例之正極集電片群集束而接 320531 17 200919807 合於集電引線板之狀態的示意圖。 第5圖（A)及（B)為示有第2實施例之2種類附有集電 片的正極板之示意圖。 第圖（C)及（D)為示有第2實施例之2種類附有集電 片的負極板之示意圖。 第7圖為示有第2實施例之堆疊電極體側面之集電片 突出狀態的示意圖。 第8圖為說明第2實施形態之疊層型電池之組裝的說 明圖。 第9圖為於第1至4實施例所製作的電池之外觀圖。 第10圖為表示第3實施例之堆疊電極體侧面之集電片 突出狀態的示意圖。 第11圖為不有第4實施例之堆疊電極體之集電片突出 狀態的示意圖。 / 態的示意圖 2 活物質層 質剝離部分） 【主要元件符號說明】 正極板 正極集電片（活物 負極板 6 負極集電片（活物質剝離部分) 被2分割的分割集電片群 堆疊電極體 堆疊電極體本體 12正極集電引線板 18 32〇531 11 200919807 13 堆疊電極體 14 封口板 15 正極外部端子下端部 16 負極外部端子下端部 17 •正極外部端子 18 負極外部端子 19 電池罐 19 320531Next, 'the respective collector chips group is divided into two parts in the same manner as in the second embodiment, and divided into a total of eight divided collector chip groups in the same-polar electrode plate, and each of them is joined to the corresponding one. Collecting lead plate. Other matters are the same as in the second embodiment, and the laminated battery of the third embodiment is produced. Thus, it has been confirmed that the battery of the embodiment can be sufficiently accommodated in the storage space in the battery of the embodiment, and the current collection is performed. The dazzle connection of the lead plate is more sturdy. (Fourth embodiment) / The fourth embodiment is as shown in Fig. 11, using a current collecting sheet having a width of 1 Gmm to form a two-column collecting sheet group at a position where the positive and negative electrode plates are different (3, 35, 5). The center of the same line as the first embodiment is divided into two, and a total of four divided collector group groups are formed in the electrode plates of the same polarity. Each of the divided collector segments is _ to the corresponding collector lead plate. Others, in contrast to the first embodiment, the laminated type electric power of the fourth embodiment was produced in this manner. Further, the connection state of each of the divided collector chips group and the current collecting lead plate is the same as that of the brother 4 diagram. It has been confirmed that the battery of this embodiment allows the current collector element to be sufficiently accommodated in the storage space ‘and the welding of the current collecting splicing plate to be stronger. (First comparative example) In the comparative example of the first brother, the stacked electrode body shown in Fig. 2 is used in the same manner as the one produced in the above-described third embodiment, and as shown in Fig. 12, the same polarity set is used. The group of chips is assembled into one without division at all, and is melted to the collector lead plate. The other matters were the same as those of the aforementioned i-th embodiment 320531 16 200919807, and thus the laminated battery of the comparative example was tested. As a result, it is difficult to store the current collector element in a storage space having a height of 5 mm, and it is not possible to fit the sealing plate to the battery can opening. [Notes] In the above embodiments, the laminated lithium ion battery (secondary electricity, 'also described as an example, the present invention is not limited to the application to the plasma battery, and the invention is applicable to the laminated type. In addition, in the foregoing embodiments, although the positive and negative current collecting tabs protrude from the same side of the stacked electrode, the positive and negative collecting tabs can be made from different sides. In the second case: In the case where only one of the collectors is divided into J and 5, the storage space of the square can be reduced. In addition, in the foregoing embodiment, The current collecting lead plates are prepared for each of the divided collector chip groups, but the divided collector chips group may be joined to different junctions of one current collecting lead plate. (Availability in the housing industry) Z Shuming can reduce the volumetric capacity of the accommodating space that is placed in order to accommodate the current collector system, and increase the volumetric energy density of the battery. It has high availability in the industry. 】 : '图Λ第一实_ with a collector chip Schematic diagram of the positive electrode plate. Schematic diagram of the protruding state. The collector sheet f" on the side of the electrode body is a diagram showing a process of bundling the current collector sheets with each other. The figure shows that the positive electrode current collecting sheet of the first embodiment is not provided. Fig. 5(A) and (B) are schematic views showing a positive electrode plate with a current collecting tab of the second embodiment shown in the second embodiment. (C) and (D) are schematic views showing a negative electrode plate with a current collecting tab of the second embodiment of the second embodiment. Fig. 7 is a view showing a state in which the current collecting tab of the side of the stacked electrode body of the second embodiment is protruded. Fig. 8 is an explanatory view showing the assembly of the laminated battery of the second embodiment. Fig. 9 is an external view of the battery produced in the first to fourth embodiments. Fig. 10 is a view showing the third embodiment. FIG. 11 is a schematic view showing a state in which the current collecting tabs of the stacked electrode body of the fourth embodiment are not protruded. FIG. 11 is a schematic view showing a state in which the current collecting tabs of the stacked electrode body of the fourth embodiment are protruded. [Main component symbol description] Positive plate positive electrode collector (living negative) Electrode plate 6 negative electrode current collecting sheet (active material peeling portion) divided into two divided power collecting sheet group stacked electrode body stacked electrode body body 12 positive electrode current collecting lead plate 18 32〇531 11 200919807 13 stacked electrode body 14 sealing plate 15 positive electrode External terminal lower end 16 negative external terminal lower end 17 • positive external terminal 18 negative external terminal 19 battery can 19 320531