201042798 六、發明說明： 【發明所屬之技術領域】 本發明係關於-種鐘離子二次電池等之疊層型二 池、疊層型二次電池之製造方法及使用此而成之電池及使用 此而成之電池組。 【先前技術】 〇 鋰離子一次電池等之疊層型二次電池，係使以域作為集 ===活性物質之正極、和以鋼_集電體塗佈 有負極活性物質之負極經由分隔片相對向而成為疊層體，重 疊地黏合連接到各電極之集電片而成為電流之輪入出部。 圖8為說明製作集電片之習知方法的圖。圖8 ❹ 電片切斷前之俯視圖，圖8B為正極片切斷前之俯視圖。集 在負極活性物質塗佈部43形成後，沿著切斷線9沖 使負極活性物質非塗佈部45之-部分在與負極活性物質塗 佈部43結合之狀態下殘留為矩雜，藉此形成貞極华 4Ί。 木月 同樣地在正極活性物質塗佈部53形成後，沿著切斷線9 沖切以使正極活性物質非塗佈部55之一部分殘留為矩形 狀，藉此形成正極集電片57。 負極集電體和正極集電體均使用數微米至數十微米 屬箔。 ’、金 負極集電片47和正極集電片57均由長度比電極之橫寬短 098116681 3 201042798 之切斷線所包圍，正極和負極中除形成 部分’由於只由厚度較薄之金屬_所科物質層之以外 屬箱部分之情況時有容㈣生毛邊之問題。因此在只切斷金 由於毛邊在電池之長期間使用過程中I。 題’因此在切斷後必須檢查毛邊之有無/有弓丨起短路等問 業，而有生產效率降低之問題。 進仃毛邊之除去作 (專利文獻1)曰本專利特開平9〜129 η 【發明内容】 1號公報 (發明所欲解決之問題） 本發明之課題為提供一種疊層型電池，其係、 子二次電池等之金屬㈣為集電體在集電7愛層型鋰離 性物質層’同時取出未塗佈有電極活性物質之上形成電極活 電片’在疊層電極後重疊地黏合集電片，連集電體作為集 線並藉由特體加以封口而成之疊層型電池，^之電核弓I 叶在集電片不會產生毛邊。 田也成集電片 (解決問題之手段） 本發明為一種疊層型二次電池，1中有八 集電體和金㈣製之負極⑽體；I極，在製 <正麵 上具有塗佈有正極活性物f之正極活性物:麵集電發 佈有正極活性㈣之正極活性物質未塗佈部，且部和未奢 活性物質未塗佈部作為正極集電片；負極，^上心麵 體上具有塗佈有負極活性物質之負極活性物麵集電 098116681 貝逢稀部宋“ 4 201042798 Ο 塗佈有負極活性物f之負極活性物質未塗佈部，且以上述負 極活性物質未塗佈部作為負極集電片；分隔片，配置在上述 正極和上述負極之間，·上述正極集電片和上述負極集電片疊 層為各-部分相對向’上述分隔片亦配置在上述正極华電片 和上述負極集電片相對向之部份；連接到上述正極集電片之 正極引線和連接到上述負極集電片之負極引線；及上述正極 引線和上述負極化線從由上述正極、上述分隔片和上述負極 所構成的疊層體之同-端面，被取出到外㈣料之外部。 另外，上述疊層型二次電池中，上述負極和上述正極之 極活性物質塗佈部形狀均為四邊形狀，上述正極片和上述負 極片隨著離開與上述正極活性物質塗佈部或上述負極活性 物質塗佈部之邊界的距離而寬度變小。 Ο 另外，上述疊層型二次電池中，上述正極片和上述負極片 為大致二㈣狀、大致梯_狀、或大致五角形狀。 上述疊層型二次電池中’上述分隔片中與上述正極集電片 和上述負極集電片對向之部分，被貼附有無經 加熱填孔。 τ 在上述正極活性物質具有鋰錳複 上述疊層型二次電池中， 合氧化物。 另外’本發明為一種疊層型二次電池之製造方法，其具備 有：在帶狀金射1之至少—面，沿長度方向塗佈糊狀正極活 性物質或負㈣性物質並沿長度方㈣置形成集電片之非 098116681 5 201042798 塗佈部之活性物質塗佈步驟；依正極或負極之寬度大小沿長 度方向切斷來製作單位電極體之步驟；在寬度方向以工或2 個切斷線切斷上述單位電極體之上述非塗佈部，切斷為隨著 離開與上述活性物質塗佈部之邊界部而寬度方向之長度變 、I作具有集電片之正極和負極之步驟；經由分隔片疊 層上述正極及上述負極之步驟；使該正極及負極之集電片互 相黏° #合正極引線和負極引線之步驟；及藉由膜狀外袭 材料加以封口之步驟。 另外，本發明係-種電池組，其為將疊層型電池之正極引 線或負極引線串聯、並聯、或串並聯連接而成者；其中，金 白製之正極集電體和金屬歸之負極集電體，·正極，在上 ^極集電體上具有塗佈有正極活性物質之正極活性物質 ^部和未塗佈有正極活性物質之正極活性物質未塗佈 且以上述正極时物質未塗佈料為正 極’在上述負極集電體 乃貝 性物質啥你邱每土 〃有&佈有貞極活性物質之負極活 ::塗佈#未塗佈有負極活性物質之 ==負極活性物絲塗佈购 A片，配置在上述正極和上述負 和上述負極集電片叠'“極集電片 分相對向，上述分則_ 到上述正極集電片之^ 集電片相對向之部分；連接 負極引線,·及上心㈣線和連接到上述負極集電片之 極引線和上述負極引線從由上述正極、 098116681 201042798 上述分隔片和上述負極所構成的疊層體之同一端面，被取出 到外裝材料之外部。 (發明效果） 本發明之疊層型電池中，以由金屬箱構成之正極集電體及 負極集電體上未塗佈有活性物質之正極活性物質非塗佈部 和負極活性物質非塗佈部分別為正極集電片和負極集電 ο 片士’當透過分則疊層正極與負細使各活性㈣層相對向 時，正極集電片和負極集電片被配置為部分經分隔片而相對 2別連從極集電片和負極集電片之正極引線及負極引線 正極隹Γ —端面被取出，因此在切斷集電體以製造 正極集電片和負極隼雷 行切斷妨礼、 斷部不會產生毛邊下進 文可提供一種可有效製造之 此之電池組。 臂玉一- 人電池和使用 【實施方式】 〇 本發月目的在於可提供一種具有正極集電片 之疊層型二次電池，當在製作以金屬落作為集電體之 負極時’分別_未㈣有正贿性=體之正極和 性物質非塗佈部、及未塗佈有負極活性物::之正柽活 非塗佈部而形成正極集電片和負貝之負極活性物質 =極軸和負極集電片之形狀成藉由切 2屬落為厚度較薄而容易發生毛邊之之开:即使如 邊。 千亦不會發生毛 098116681 7 201042798 以下參照圖式用來說明本發明。 圖1為朗本發日轉層型二次電狀㈣形態的圖。 圖1A為以垂直於叠層型二次電池之疊層面的面切斷之剖 視圖另外圖1β為說明以圖1A之A-A線切斷之剖面 的圖。 本發明之疊層型二次電池1中，電池元件2由膜狀外裝材 料3封口。在電池元件2中，分別透過由合成樹脂製之多孔 性膜構成之分隔片6而疊層有負極4及正極5。 負極4具有.負極活性物質塗佈部43，在負極集電體41 塗佈有負極活性物質；和負極活性物質非塗佈部Μ，未塗 佈有負極活性物質；而在上述負極活性物質塗佈部之一部分 或全部形成有負極集電片47。 圖1B所說明之負極車雷u& μ & 、茱電片形成為從與塗佈有負極活性 物質之區域相接之部分涵篆备 刀涵盍負極之松免方向全寬橫寬朝向 前端部變窄。 另外，正極5亦具有：正極活性物質塗佈部53,在正極 集電體51塗佈有正極活性物f ;和正㈣性物質非塗佈部 55 ’未塗佈有正極活性物質；而在上述正極活性物質塗佈部 之4分或全部形成有正極集電片57。 、 正極集電片57係與負極集電片同樣地， 有正極活性物質之區域相接之部分涵蓋負極之橫=與塗佈 寬橫寬朝向前端部變窄。 、’方向全 098116681 8 201042798 在負極4和正極5之間配置有分隔片6。 本發明之疊層型二次電池中，正極集電片及負極集電片均 與集電體形成-體，所具有形狀是從與塗佈有電極活性物質 之區或相接之分涵蓋正極和負極之橫寬方向全寬橫寬朝 向前端部變小。 、 另外，分隔片6被配置為覆蓋在負極集電片47與正極集 电片57相對向之區域、亦即在將負極集電片47投影在正極 〇集電片57之情況下成為圖1B所示之大致三角形重疊部分 的對向部分8間。 口此即使在疊層具有負極集電片47和正極集電片57 相對向之邛刀的正極和負極之情況下，亦不會在兩者對向之 大致二角形區域中發生電性短路。 另外在負極集電片47黏合有負極引線15，在正極集電 片57黏合有正極引線17。 〇 如上述’經由分隔片疊層負極與正極並黏合各集電片，在 集電片黏合負極引線和正極引線後，在内部充填電解液後， 從膜狀外I材料3之封口部分取出負極引線15和正極引線 17而了製作登層型二次電池。 圖2為順序地說明本發明實施形態疊層型二次電池之製 造步驟的圖。 圖2A為說明正極的圖，正極5係具有由塗佈有正極活性 物質之正極活性物質塗佈部53、和未塗佈有正極活性物質 098116681 201042798 之正極活性物質非塗佈部所構成的正極集電片57。 正極集電片一邊係位於塗佈有電極活性物質的部分外形 之延長線上，另一邊自未塗佈有具有作為與負極活性物質塗 佈部之邊界線的大致三角形外形之正極活性物質的部分形 成。 另外，圖2B為說明本發明一實施形態之分隔片的圖，分 隔片6為由三邊融著部61間歇地黏合而成之袋狀體。 藉由融著部61形成在分隔片内部之區域設為正極5之寬 度，藉此如圖2C所示當在分隔片6内安裝正極5之情況時， 正極5可藉由分隔片6之融著部61定位其三邊。 另外，圖2D為說明本發明一實施形態之負極的圖，負極 4中，在塗佈有負極活性物質之負極活性物質塗佈部43、和 未塗佈有負極活性物質之負極活性物質非塗佈部，形成有負 極集電片47。 負極集電片一邊係位於塗佈有電極活性物質的部分外形 之延長線上，另一邊自未塗佈有具有作為與負極活性物質塗 佈部之邊界線的大致三角形外形之負極活性物質的部分形 成。 另外，圖2E為說明疊層圖2C所示插入有正極之分隔片、 和圖2D所說明之負極後之狀態的圖。 正極5經由圖2C所說明分隔片6内部之融著部61對分 隔片進行定位，因此藉由定位與分隔片6之外形部直角相交 098116681 10 201042798 之了板邊和負極4之二稜邊，可容易決定正極$和經由分隔 片疊層之負極4之相對位置，可製作負極和正極兩者之位置 關係正確的疊層體。 如此，可藉由設在分隔片之融著部定位正極，由分隔片之 周邊部定位負極。 如此一來，可容易進行經特定正極與負極之相對位置的疊 層0 〇另外’如圖2精示，在負極集電片47和正極集電片57 之對向部分8存在有分隔片，㈣可防止負極集電片47和 正極集電片57間之電性短路。 如此-來，在疊層既定個數負極、分隔片和正極後，相互 黏合負極集電片47和正極集電片57後，在負極集電片47 黏合負極弓|線15’在正極集電片57黏合正極弓隱17,藉由 膜狀外裝材料加以封口。 〇 另外’圖2F為說明本發明另—實施形態之圖。 圖2F所示之分隔片6中，在負極集電片47和正極集電片 57與對向部分8對應的部分，貼附有無孔臈幻。藉由如此 貼著無孔臈，可確實防止負極集電片47和正極集電片57 在對向部分8的兩者接觸。 另外取代無孔膜，亦可將負極集電片47和正極集電片 57之對向部分8的分隔月6進行加熱填孔，更進一步在將 分隔片進行加熱填孔後再一併進行多層化。 098116681 201042798 圖3為說明正極和負極之製作方法的圖。圖μ和圖犯 為祝明負極之圖，圖3C和圖3D為說明正極之圖。 圖3A為在負極集電體形成負 為負極集電片47之未塗佈有負= 部43和作 非塗佈部45而成者。極雜物㈣負極活性物質 域然 1’藉/沿著輯線9輯化佈有-紐物質之區 域二如圖3B所示可製作出形成有負極集電片47之負極。 在圖所示沿著直線狀之切斷線切斷未塗佈有負極活性 物質的負極集電體之金屬落部分情況時，不會產生毛邊。 關於正極’亦與負極同樣地如圖3C所示，為在正極集電 體形成正極活性物質塗佈部53和作為正極集電片π之未塗 佈有正極活性㈣的正極活性物質非塗佈部55而成者。藉 由沿著切斷線9切斷正極活性物質非塗佈部55，如圖3叫 不可製作出形成有正極集電片57之正極。 圖為順序地說明本發明另一實施形 池之製造步驟的圖。 電 圖4中所說明實施形態之疊層型二次電池，相較於圖2 所說明之實施形態除了負極集電片和正極集電片之上端部 形狀、及分隔片形狀外，其餘部分均相同。 ' 如圖4A、圖4D所示，不同處在於負極集電片47 梯形形狀之外形，正極集電片57上端部之負極引線端 子女裝邛、及負極引線端子安裝部平行於負極及正極之活性 098116681 12 201042798 物質塗佈部和活性物質錢佈部之邊界。 負極集電片 物質的部—邊條於㈣有電極活性 之邊界線，與負極活性㈣塗佈部 -1-、，、財作為與貞絲性物》塗佈部之邊 ^ 域梯形形狀的負極活性物質之部分形成。 目異處Ϊ於分隔片6之上端部為沿大致三角形之外 Ο y 以覆蓋負極集電片47與正極集電片57 區域、亦即覆罢將心… 果電片57相對向之 復皿將負極集電片47投影於正極#電 況的大致三角形重疊部分8。 7之險 狀，而在^由變更1極集電片、正轉電片、及分隔片之形 、㈣電#和正極集電#兩者未相對向 在有分則，料謂縣Μ理貞轉W和正極隼電片 之效果。 ~ 圖5為說明另一實施形態之正極和負極之製作方法的 :極:^和圖5Β為說明負極的圖’圖5C和圖5D為說明 圖為在負極集電體形成負極活性物質塗佈部Μ和作 為負極集電片47之未塗佈有負極活性物質的區域而成者。 另外藉由將未塗佈有負極活性物質之區域設為由從負極 rrt佈部之兩寬延伸之外形線、與此結合之二切斷線 料雜转之邊界線所包圍 角形，而如圖5B所示可製作出形成有負極集電月 098116681 13 201042798 47之負極。 未塗佈有負極活性物質的負極集電體之金屬箔部分，如圖 所示只由活性物質塗佈部之延長部和二條直線狀切斷線切 斷，因此與圖2所示同樣地不會產生毛邊。 另外，正極集電片亦與負極集電片同樣地，如圖5C所示 藉由沿著切斷線91、92切斷未塗佈有正極活性物質之區 域，而如圖5D所示可製作出形成有正極集電片57之正極。 其次說明將電極活性物質塗佈在集電體來製造本發明電 極之步驟。 圖6為說明本發明電極之製造步驟的圖，為以負極為例而 說明的圖。另外，對於正極亦可以同樣方式製造。 如圖6A所示，在帶狀負極集電體41A塗佈負極活性物質 之糊。負極活性物質之塗佈間歇地形成為有形成負極活性物 質塗佈部43和未塗佈有負極活性物質之負極活性物質非塗 佈部45。負極活性物質非塗佈部45之大小依照所形成之負 極集電片大小而決定。 其次，如圖6B所示，以與構成疊層型二次電池之疊層體 的一個負極寬度相當之寬度，沿著切斷線93切斷塗佈有負 極活性物質之帶狀集電體。 圖6C所示例中，對於沿負極寬度切斷之帶狀體41B，依 垂直於帶狀體長度方向之切斷線94以切斷線切斷接近負極 活性物質非塗佈部45之部分的負極活性物質塗佈部43，同 098116681 14 201042798 時以傾斜於帶狀體長度方向之方向的切斷線95來切斷負極 活性物質非塗佈部45而可獲得負極4。 在此方法中，因為可獲得形狀對帶狀體之長度方向對齊之 負極4 ’因此不需要之後旋轉等操作。 圖6D所示例中，對於沿負極寬度切斷之帶狀體4ΐβ，依 垂直於帶狀體長度方向之切斷線94切斷接近經由活性物質 非塗佈部—接之負極活性物f塗佈部43兩側之負極活性[Technical Field] The present invention relates to a method for manufacturing a stacked type two-cell, laminated type secondary battery, such as a clock ion secondary battery, and a battery and use thereof This is a battery pack. [Prior Art] A laminated secondary battery such as a lithium ion primary battery is a positive electrode having a domain as a set ===active material, and a negative electrode coated with a negative electrode active material as a steel-collector via a separator The laminated body is opposed to each other, and the current collecting sheets connected to the respective electrodes are bonded to each other to form a current input/exit portion. Fig. 8 is a view for explaining a conventional method of manufacturing a current collecting tab. Fig. 8 is a plan view before the cutting of the electric piece, and Fig. 8B is a plan view before the cutting of the positive electrode piece. After the negative electrode active material application portion 43 is formed, the portion of the negative electrode active material non-coating portion 45 is slid along the cutting line 9 in a state of being bonded to the negative electrode active material application portion 43. This formed a bungee. In the same manner, after the positive electrode active material application portion 53 is formed, it is die-cut along the cutting line 9 so that one portion of the positive electrode active material non-coating portion 55 remains in a rectangular shape, whereby the positive electrode current collecting sheet 57 is formed. Both the anode current collector and the cathode current collector use a foil of several micrometers to several tens of micrometers. ', the gold negative electrode current collecting piece 47 and the positive electrode current collecting piece 57 are all surrounded by a cutting line having a length shorter than the lateral width of the electrode 098116681 3 201042798, except for forming a portion in the positive electrode and the negative electrode due to only a thin metal. In the case of a part of the box outside the material layer, there is a problem of (4) raw burrs. Therefore, only the gold is cut off because the burrs are used during the long period of the battery. Therefore, it is necessary to check the presence or absence of burrs/short-circuiting of the burrs after cutting, and there is a problem of reduced productivity. The present invention provides a laminated battery, which is a system, and a method for solving the problem of the invention. The metal (4) of the sub-secondary battery or the like is a current collector, and the electrode active electric sheet is formed on the current collector 7 layer of the lithium-ion material layer while being uncoated with the electrode active material. A current collecting sheet, a laminated battery in which a current collector is used as a collecting line and sealed by a special body, and the electric core bow I leaf does not have a burr on the current collecting sheet. FIELD OF THE INVENTION The present invention relates to a laminated secondary battery, which has eight collectors and a negative electrode (10) made of gold (four); and an electrode having a front side; a positive electrode active material coated with a positive electrode active material f: a positive electrode active material uncoated portion having a positive electrode active (4) surface, and a non-coated active material uncoated portion as a positive electrode current collecting sheet; The negative electrode active material surface coated with the negative electrode active material on the cardioid body 098116681, the thin negative active material uncoated portion coated with the negative electrode active material f, and the above negative electrode active material The uncoated portion serves as a negative electrode current collecting sheet; the separator is disposed between the positive electrode and the negative electrode, and the positive electrode current collecting sheet and the negative electrode current collecting sheet are laminated so that the respective portions are disposed opposite to each other a positive electrode of the positive electrode and the negative electrode collector; a positive electrode lead connected to the positive electrode current collecting tab; and a negative electrode lead connected to the negative electrode current collecting tab; and the positive electrode lead and the negative electrode line The above positive electrode, The same-end surface of the laminate of the separator and the negative electrode is taken out to the outside of the outer (four) material. Further, in the laminated secondary battery, the shape of the active material application portion of the negative electrode and the positive electrode The positive electrode sheet and the negative electrode sheet have a smaller width as they are apart from the boundary between the positive electrode active material application portion or the negative electrode active material application portion. Ο In addition, the laminated secondary battery The positive electrode sheet and the negative electrode sheet have a substantially two (four) shape, a substantially trapezoidal shape, or a substantially pentagonal shape. In the above-described laminated secondary battery, the positive electrode current collecting sheet and the negative electrode current collecting sheet are In the above-mentioned positive electrode active material, the above-mentioned positive electrode active material has a lithium manganese composite laminated battery, and a composite oxide. Further, the present invention is a laminated secondary battery. A manufacturing method comprising: coating at least a surface of the strip-shaped gold shot 1 , applying a paste-form positive active material or a negative (tetra) substance along a longitudinal direction, and forming a current collecting sheet along a length (four); 6681 5 201042798 The active material coating step of the coating portion; the step of cutting the unit electrode body by cutting in the longitudinal direction according to the width of the positive electrode or the negative electrode; and cutting the unit electrode body by work or two cutting lines in the width direction The non-coated portion is cut into a step of changing the length in the width direction from the boundary portion with the active material application portion, and the step of forming the positive electrode and the negative electrode having the current collecting sheet; and laminating the positive electrode via the separator. And the step of disposing the negative electrode; and the step of sealing the current collector sheets of the positive electrode and the negative electrode with each other; and the step of sealing the film by the film-like attack material. Further, the present invention is a battery pack The positive electrode lead or the negative electrode lead of the laminated battery is connected in series, in parallel, or in series and in parallel; wherein, the positive electrode current collector of the gold-white battery and the negative electrode current collector of the metal, the positive electrode, The positive electrode active material coated with the positive electrode active material and the positive electrode active material not coated with the positive electrode active material are not coated on the pole current collector, and the positive electrode material is not coated as the positive electrode. In the above-mentioned negative electrode current collector, a shell-like substance, you have a negative electrode active material with a bungee active material in each of the soils:: coating # is not coated with a negative electrode active material == negative electrode active material wire coating purchase The A piece is disposed on the positive electrode and the negative electrode and the negative electrode collector chip stack 'the pole collector sheet is opposite to each other, and the above-mentioned step _ is to the opposite portion of the positive electrode current collecting sheet; the negative electrode lead is connected And the upper core (four) line and the electrode lead connected to the negative electrode current collecting tab and the negative electrode lead are taken out from the same end face of the laminated body composed of the positive electrode, the separator of 098116681 201042798 and the negative electrode, and are taken out to the exterior The exterior of the material. (Effect of the Invention) In the laminated battery of the present invention, the positive electrode active material non-coating portion and the negative electrode active material which are not coated with the active material on the positive electrode current collector and the negative electrode current collector which are formed of a metal case are not coated. The positive electrode current collecting piece and the negative electrode current collecting piece are respectively used as the positive electrode current collecting piece and the negative electrode current collecting piece are arranged as a partial partitioning piece when the positive electrode and the negative electrode are opposed to each other by the positive electrode and the negative electrode. On the other hand, the positive electrode lead and the negative electrode lead positive electrode of the pole collector and the negative electrode tab are taken out, so that the current collector is cut to manufacture the positive electrode current collector and the negative electrode. The ritual and broken parts do not produce burrs and can provide a battery pack that can be effectively manufactured. Arm Jade-Person Battery and Use [Embodiment] The purpose of the present invention is to provide a laminated secondary battery having a positive electrode current collecting tab, when the negative electrode is formed as a current collector. (4) There is a positive bribe = a positive electrode of a body and a non-coated portion of a substance, and a negative electrode active material which is not coated with a negative electrode active material: a positive electrode current collector sheet and a negative electrode active material; The shape of the polar and negative current collecting tabs is such that the burrs are easily opened by the thinning of the culverts: even if the edges are. Thousands of hairs do not occur. 098116681 7 201042798 The following description is made with reference to the drawings. Fig. 1 is a diagram showing the secondary electric (four) form of the Langben hair transfer type. Fig. 1A is a cross-sectional view taken along a plane perpendicular to a lamination plane of a laminated secondary battery, and Fig. 1 is a view showing a cross section taken along line A-A of Fig. 1A. In the laminated secondary battery 1 of the present invention, the battery element 2 is sealed by a film-like exterior material 3. In the battery element 2, the negative electrode 4 and the positive electrode 5 are laminated by passing through a separator 6 made of a porous film made of a synthetic resin. The negative electrode 4 has a negative electrode active material application portion 43 to which the negative electrode active material 41 is coated with a negative electrode active material, and a negative electrode active material non-coating portion Μ, which is not coated with the negative electrode active material, and is coated with the negative electrode active material. A negative electrode current collecting tab 47 is formed partially or entirely of the cloth portion. The negative electrode ruthenium u & μ & 茱 说明 说明 说明 图 茱 μ μ μ 负极 负极 负极 负极 负极 负极 负极 负极 负极 负极 负极 负极 负极 负极 负极 负极 负极 负极 负极 负极 负极 负极 负极 负极 负极 负极 负极 负极 负极 负极 负极 负极 负极 负极 负极 负极 负极The department narrowed. In addition, the positive electrode 5 also includes a positive electrode active material application unit 53 in which the positive electrode active material 51 is coated with the positive electrode active material f, and the positive (tetra) substance non-coated portion 55' is not coated with the positive electrode active material; The positive electrode current collecting sheet 57 is formed in four or more portions of the positive electrode active material application portion. In the same manner as the negative electrode current collecting sheet, the positive electrode current collecting sheet 57 covers a portion where the positive electrode active material region is in contact with the width of the negative electrode and the coating width width is narrowed toward the front end portion. , "All directions 098116681 8 201042798 A separator sheet 6 is disposed between the negative electrode 4 and the positive electrode 5. In the laminated secondary battery of the present invention, both the positive electrode current collecting tab and the negative electrode current collecting tab are formed integrally with the current collector, and have a shape that covers the positive electrode from a region or a region where the electrode active material is coated. The width and width of the negative electrode and the width and width of the negative electrode become smaller toward the front end portion. Further, the separator 6 is disposed so as to cover the region where the negative electrode current collecting tab 47 and the positive electrode current collecting tab 57 face each other, that is, when the negative electrode current collecting tab 47 is projected on the positive electrode current collecting tab 57, as shown in FIG. 1B. Between the opposing portions 8 of the substantially triangular overlapping portion is shown. In the case where the positive electrode and the negative electrode having the negative electrode current collecting piece 47 and the positive electrode current collecting piece 57 opposed to each other are laminated, the electrical short circuit does not occur in the substantially rectangular region where the two are opposed. Further, a negative electrode lead 15 is bonded to the negative electrode current collecting tab 47, and a positive electrode lead 17 is bonded to the positive electrode current collecting piece 57. For example, as described above, the negative electrode and the positive electrode are laminated via a separator, and the current collector sheets are bonded, and after the negative electrode lead and the positive electrode lead are bonded to the current collector sheet, after the electrolyte is filled inside, the negative electrode is taken out from the sealing portion of the film-like outer material I. The lead 15 and the positive lead 17 were used to form a layered secondary battery. Fig. 2 is a view sequentially showing the steps of manufacturing a laminated secondary battery according to an embodiment of the present invention. 2A is a view for explaining a positive electrode, and the positive electrode 5 has a positive electrode active material application portion 53 to which a positive electrode active material is applied, and a positive electrode composed of a positive electrode active material non-coating portion to which a positive electrode active material 098116681 201042798 is not applied. Collector sheet 57. The positive electrode current collecting sheet is formed on an extension line of a portion of the outer shape to which the electrode active material is applied, and the other side is formed from a portion having a substantially triangular outer shape active material which is a boundary line with the negative electrode active material coating portion. . Further, Fig. 2B is a view for explaining a separator according to an embodiment of the present invention, and the separator 6 is a bag-like body which is intermittently bonded by the three-side fusion portion 61. The region formed inside the separator by the fused portion 61 is set to the width of the positive electrode 5, whereby when the positive electrode 5 is mounted in the separator 6 as shown in Fig. 2C, the positive electrode 5 can be melted by the separator 6 The portion 61 positions its three sides. 2D is a view illustrating a negative electrode according to an embodiment of the present invention, in which the negative electrode active material application portion 43 to which the negative electrode active material is applied and the negative electrode active material not coated with the negative electrode active material are not coated. The cloth portion is formed with a negative electrode current collecting tab 47. The negative electrode current collecting tab is formed on an extension line of a portion of the outer shape of the electrode active material coated thereon, and the other side is formed from a portion having a substantially triangular outer shape active material as a boundary line with the negative electrode active material coating portion. . In addition, FIG. 2E is a view for explaining a state in which the separator having the positive electrode inserted in FIG. 2C and the negative electrode illustrated in FIG. 2D are laminated. The positive electrode 5 is positioned by the fused portion 61 inside the separator 6 illustrated in FIG. 2C, and thus the edge of the plate and the negative electrode 4 of the 098116681 10 201042798 are intersected by the right angle of the outer portion of the separator 6 . The relative position of the positive electrode $ and the negative electrode 4 laminated via the separator can be easily determined, and a laminate having the correct positional relationship between the negative electrode and the positive electrode can be produced. Thus, the positive electrode can be positioned by the fused portion provided in the separator, and the negative electrode can be positioned by the peripheral portion of the separator. In this way, the stacking of the relative positions of the specific positive electrode and the negative electrode can be easily performed. Further, as shown in FIG. 2, the separators are present in the opposing portions 8 of the negative electrode current collecting tab 47 and the positive electrode current collecting tab 57. (4) An electrical short circuit between the negative electrode current collecting tab 47 and the positive electrode current collecting tab 57 can be prevented. In this way, after laminating a predetermined number of negative electrodes, separators, and positive electrodes, after bonding the negative electrode current collecting tabs 47 and the positive electrode current collecting sheets 57 to each other, the negative electrode current collecting tabs 47 are bonded to the negative electrode tabs | The sheet 57 is bonded to the positive bow 17 and sealed by a film-like exterior material. Further Fig. 2F is a view for explaining another embodiment of the present invention. In the separator 6 shown in Fig. 2F, a non-porous illusion is attached to a portion of the negative electrode current collecting sheet 47 and the positive electrode current collecting sheet 57 corresponding to the opposing portion 8. By thus adhering the non-porous rim, it is possible to surely prevent the negative electrode current collecting tab 47 and the positive electrode current collecting sheet 57 from coming into contact with each other at the opposing portion 8. Further, instead of the non-porous film, the separator 6 of the opposing portion 8 of the negative electrode current collecting sheet 47 and the positive electrode current collecting sheet 57 may be heated and filled, and further, the separator may be heated and filled, and then multilayered. Chemical. 098116681 201042798 FIG. 3 is a view for explaining a method of manufacturing a positive electrode and a negative electrode. Fig. 3 and Fig. 3D are diagrams illustrating the positive electrode. Fig. 3A is a view in which a negative negative electrode current collector 47 is formed on the negative electrode current collector, and a negative portion 43 and a non-coating portion 45 are not coated. Very small substance (4) Negative electrode active material In the region 1', the negative electrode formed with the negative electrode current collecting piece 47 can be produced as shown in Fig. 3B. When the metal falling portion of the negative electrode current collector not coated with the negative electrode active material is cut along a linear cutting line as shown in the figure, no burrs are generated. In the same manner as the negative electrode, the positive electrode active material application portion 53 and the positive electrode active material π which is not coated with the positive electrode active material (four) are not coated as shown in FIG. 3C. Part 55 is the original. The positive electrode active material non-coating portion 55 is cut along the cutting line 9, and as shown in Fig. 3, the positive electrode on which the positive electrode current collecting sheet 57 is formed cannot be produced. BRIEF DESCRIPTION OF THE DRAWINGS The Figure is a diagram sequentially illustrating the manufacturing steps of another embodiment of the present invention. The laminated secondary battery of the embodiment described in the electric diagram 4 is the same as the embodiment described in Fig. 2 except for the shape of the upper end of the negative electrode current collecting sheet and the positive electrode current collecting sheet, and the shape of the separator. the same. As shown in FIG. 4A and FIG. 4D, the difference is that the negative electrode current collecting piece 47 has a trapezoidal shape, and the negative electrode lead terminal of the upper end of the positive electrode current collecting piece 57 and the negative electrode lead terminal mounting portion are parallel to the negative electrode and the positive electrode. Activity 098116681 12 201042798 The boundary between the substance coating portion and the active material portion. The portion of the negative electrode current collector sheet-side strip is (4) having an electrode active boundary line, and the negative electrode active (four) coating portion -1-, ,, and the smear-like property of the coated portion of the trapezoidal shape. A part of the negative electrode active material is formed. The difference from the upper end of the partitioning piece 6 is along the substantially triangular shape Ο y to cover the area of the negative electrode current collecting piece 47 and the positive electrode current collecting piece 57, that is, the surface of the positive electrode collecting piece 57 is opposite to the heart. The negative electrode current collecting tab 47 is projected onto the substantially triangular overlapping portion 8 of the positive electrode # electrical condition. The danger of 7 is changed in the shape of the 1-pole collector, the forward-rotating chip, and the separator. The (4) electric # and the positive collector # are not in the opposite direction. The effect of twisting W and positive electrode. 5 is a view illustrating a method of fabricating a positive electrode and a negative electrode according to another embodiment: FIG. 5 and FIG. 5A are diagrams illustrating a negative electrode. FIGS. 5C and 5D are explanatory views showing formation of a negative electrode active material coating on a negative electrode current collector. The portion and the region of the negative electrode current collecting tab 47 to which the negative electrode active material is not applied are formed. In addition, the region not coated with the negative electrode active material is surrounded by the boundary line extending from the two widths of the negative rrt cloth portion and the boundary line of the two cutting wires mixed with the negative electrode, and The negative electrode formed with the negative electrode current collection 098116681 13 201042798 47 can be produced as shown in FIG. 5B. The metal foil portion of the negative electrode current collector to which the negative electrode active material is not applied is cut only by the extension portion of the active material application portion and the two linear cutting lines as shown in the drawing, and therefore is not the same as that shown in Fig. 2 . Will produce burrs. Further, similarly to the negative electrode current collecting sheet, as shown in FIG. 5C, the positive electrode current collecting sheet can be cut as shown in FIG. 5D by cutting the region not coated with the positive electrode active material along the cutting lines 91 and 92. The positive electrode on which the positive electrode current collecting tab 57 is formed is formed. Next, the step of applying the electrode active material to the current collector to produce the electrode of the present invention will be described. Fig. 6 is a view for explaining a manufacturing step of the electrode of the present invention, and is a view in which a negative electrode is taken as an example. In addition, the positive electrode can also be produced in the same manner. As shown in Fig. 6A, a paste of a negative electrode active material is applied to the strip-shaped negative electrode current collector 41A. The application of the negative electrode active material is intermittently formed to form the negative electrode active material application portion 43 and the negative electrode active material non-coating portion 45 to which the negative electrode active material is not applied. The size of the negative electrode active material non-coating portion 45 is determined in accordance with the size of the negative electrode current collector sheet to be formed. Then, as shown in Fig. 6B, the strip-shaped current collector coated with the negative electrode active material is cut along the cutting line 93 with a width corresponding to the width of one negative electrode of the laminate constituting the laminated secondary battery. In the example shown in Fig. 6C, the strip-shaped body 41B cut along the negative electrode width is cut by a cutting line perpendicular to the longitudinal direction of the strip-shaped body by a cutting line close to a portion of the negative electrode active material non-coating portion 45. In the active material application unit 43, the negative electrode active material uncoated portion 45 is cut by the cutting line 95 inclined in the longitudinal direction of the strip body at the same time as 098116681 14 201042798, whereby the negative electrode 4 can be obtained. In this method, since the negative electrode 4' in which the shape is aligned with the longitudinal direction of the strip is obtained, operation such as post-rotation is not required. In the example shown in Fig. 6D, the strip-shaped body 4ΐβ cut along the width of the negative electrode is cut by the cutting line 94 perpendicular to the longitudinal direction of the strip, and the negative electrode active material f is applied close to the uncoated portion via the active material. Anode activity on both sides of portion 43
物質非塗钸部45的部分之負極活性㈣塗佈部，同時利用 傾斜於對帶狀體長度方向之方向的切斷線95來切斷位於上 述負極活性物質塗佈部之_負極活性物f非塗佈部Μ , 而可獲得負極4。 圖6E所示例中，在沿負極寬度切斷之帶狀體仙，經由 負極活性物質非塗佈部45而形成有2個部分長度之負極活 性物質塗佈部43A。 藉由垂直於帶狀體長度方向之切斷線94來切斷負極活性 物質塗佈部43A之帶狀體長度方向之中間點，同時藉由傾 狀帶狀體長度方向之方向的切斷線95來靖負極活性物 質非塗佈部45，而可獲得負極4。 ’但需要藉 型二次電池 圖6D、6E所示之方法中，廢棄之構件量變少 由旋轉等對齊所製作之負極4。 其-欠，參照圖式而說明結合有多個本發明疊層 而成電池組之一實施形態。 098116681 15 201042798 圖7為說明電池組之一實施形態的圖。圖7a為從電極引 線側觀看到之前視圖，圖7B為省略與電極引線側相反側之 部分之俯視圖。 電池組100為藉由連結導電構件19A1〜19A3串聯連接4 個璧層型二次電池i之電極引線15A2〜15α4、ΠΒ1〜17B3 而成者，在與外部電路連接用之電極端子15人卜17B4黏合 有矩形平板狀之片端子21A、2ib。 另外，藉由錫焊等在連接部27A、27B中連接連接引線 23A1、23B之芯線部分25A、25B於片端子21A、21B。然 後，在各片端子21Λ、21B先連接連接引線後，在黏合部 29A、29B藉由點熔接等與電極端子黏合。 更進一步，藉由如上述電性地串聯、並聯、串並聯連接多 個疊層型二次電池而成一體化，可提供一種具有任意輪出電 壓、輸出電流之電池組。 另外，亦可在該等電池裝設保護電路、控制電路等。 下面說明本發明之疊層型二次電池為鋰離子電池之情況。 在正極中，以銘、治作為正極集電體於正極集電體上形成有 正極活性物質。 關於正極活性物質，就摻雜、非摻雜鋰錳複合氧化物、鋰 銘複合氧化物、鐘鎳複合氧化物、或含經、銘、鎳等之經複 合氧化物等之鋰的鋰過渡金屬複合氧化物，N_曱基咯啶酮 等之溶劑一起混合碳黑等之賦予導電性材料、聚氟化亞乙烯 098116681 16 201042798 等之黏著劑，成為漿狀塗佈在正極集電體上而細乾燥，再 由浪歷機等進行Μ延以形成正極活性物質層，可製作正極。 另外’關於負極，以銅落作為負極集電體，就摻雜、非推 雜黑錯粉末等之_負極活性物f，與Ν—甲基_綱等: 溶劑-起混合碳黑等之賦予導電性材料、聚氟化亞乙婦等之 黏著劑’成為餘塗佈在負極集電體上而加以乾燥，再由旁 壓機等進行壓延以形成負極活性物質層，可製作負極。“ ° 就設有正極集電片之正極和設有負極集電片之負極之各 個，亦在正極集電#和負轉電#相對向之部分介設由聚乙 烯、聚丙烯等構成之分隔片，疊層既定片數而形成電池元件 之疊層體。 其次，可在乙烯碳酸酯(EC)、二甲基碳酸酯(DMc)、二乙 基石反酸醋（DEC)等之碳酸g旨類、^ —丁内§旨等之内醋類， 充填添加有LiPF6等電解f之電解液後，引出正極引線和負 ❹極引線，可由不會茂漏或滲透水分之膜狀外裝材料加以封 口。 作為膜狀外裝材料，最好使用膜狀外裝材料層，該膜狀外 裝材料層為在鋁箔之内面疊層聚乙烯，聚丙烯等熱融著性良 好之層、在外面疊層強度較大且具有鋁箔保護層之作用的尼 龍、聚酯等之層。 其次說明根據本發明之實施形態所製作成的鋰離子二次 電池之一例。作為負極集電體係使用1〇μιη之銅箔，作為正 098116681 17 201042798 極集電體係使用20/rni之紹箔。 」極活性物質為在石墨調配碳黑作為導電性賦予材料，在 聚氟化亞乙婦添加N-甲基心定酮作 活性物質糊而成者。 Μ心__負極 對於正極活性物質’為使用LlMn2〇4，與負極同樣地同樣The negative electrode active (four) coating portion of the portion of the material non-coating portion 45 is cut by the cutting line 95 inclined in the longitudinal direction of the strip to cut the negative electrode active material f located in the negative electrode active material application portion. The negative electrode 4 can be obtained by the non-coating portion. In the example shown in Fig. 6E, the strip-shaped body cut along the negative electrode width is formed with two partial-length negative electrode active material applying portions 43A via the negative electrode active material non-coating portion 45. By the cutting line 94 perpendicular to the longitudinal direction of the strip, the intermediate point in the longitudinal direction of the strip of the negative electrode active material application portion 43A is cut, and the cutting line in the longitudinal direction of the inclined strip is cut. In the 95th negative electrode active material non-coating portion 45, the negative electrode 4 can be obtained. 'But the secondary battery is required. In the method shown in Figs. 6D and 6E, the amount of the discarded member is reduced by the alignment of the negative electrode 4 produced by the rotation or the like. In the following, an embodiment in which a plurality of stacked battery packs of the present invention are combined will be described with reference to the drawings. 098116681 15 201042798 FIG. 7 is a view for explaining an embodiment of a battery pack. Fig. 7a is a front view as seen from the side of the electrode lead, and Fig. 7B is a plan view of a portion on the side opposite to the side of the electrode lead. The battery pack 100 is obtained by connecting the electrode leads 15A2 to 15α4 and ΠΒ1 to 17B3 of the four layers of the secondary battery i in series by connecting the conductive members 19A1 to 19A3, and the electrode terminal 15 for connection with an external circuit is 17B4 A rectangular flat sheet terminal 21A, 2ib is bonded. Further, the core portions 25A and 25B of the connection leads 23A1 and 23B are connected to the lead terminals 21A and 21B in the connecting portions 27A and 27B by soldering or the like. Then, after the connection leads are connected to the respective chip terminals 21A and 21B, the bonding portions 29A and 29B are bonded to the electrode terminals by spot welding or the like. Further, by integrating a plurality of stacked secondary batteries electrically, in series, in parallel, in series and in parallel as described above, it is possible to provide a battery pack having an arbitrary wheel-out voltage and an output current. In addition, a protection circuit, a control circuit, or the like may be mounted on the batteries. Next, the case where the laminated secondary battery of the present invention is a lithium ion battery will be described. In the positive electrode, a positive electrode active material is formed on the positive electrode current collector by using a positive electrode as a positive electrode current collector. Regarding the positive electrode active material, a doped, undoped lithium manganese composite oxide, a lithium complex oxide, a nickel-nickel composite oxide, or a lithium transition metal containing lithium, such as a composite oxide of Jing, Ming, and nickel A solvent such as a composite oxide or N-mercaprolidone is mixed with a conductive material such as carbon black or the like, and an adhesive such as polyvinyl fluoride 098116681 16 201042798 is applied to the positive electrode current collector in a slurry form. The film is dried and dried by a celestial machine or the like to form a positive electrode active material layer, whereby a positive electrode can be produced. In addition, regarding the negative electrode, the copper negative is used as the negative electrode current collector, and the negative electrode active material f such as doping or non-intrusive black powder is mixed with Ν-methyl _ class: solvent-mixed carbon black or the like. The conductive material, the adhesive such as a polyfluorinated ethylene oxide, and the like are applied to the negative electrode current collector and dried, and then rolled by a side press or the like to form a negative electrode active material layer, whereby a negative electrode can be produced. " ° is provided with the positive electrode of the positive electrode current collecting tab and the negative electrode provided with the negative current collecting tab, and is also separated by a polyethylene, polypropylene, etc. in the opposite portion of the positive current collecting current # and the negative power transmitting # A sheet is formed by laminating a predetermined number of sheets to form a laminate of battery elements. Next, it is possible to use carbonic acid such as ethylene carbonate (EC), dimethyl carbonate (DMc) or diethyl fluorite (DEC). The vinegars of the class, ^, Ding, etc., are filled with an electrolyte containing an electrolysis f such as LiPF6, and the positive electrode lead and the negative electrode lead are taken out, and the film may be made of a film-like exterior material that does not leak or permeate moisture. As the film-like exterior material, it is preferable to use a film-like exterior material layer in which a layer of polyethylene, polypropylene or the like having a good heat fusion property is laminated on the inner surface of the aluminum foil. A layer of a nylon or a polyester having a layer strength and having an aluminum foil protective layer. Next, an example of a lithium ion secondary battery produced according to an embodiment of the present invention will be described. As a negative electrode current collecting system, 1 〇 μηη is used. Copper foil, as positive 098116681 17 201042798 System using 20 / rni of Shao foil. "Electrode active material is graphite in the carbon black as a conductivity imparting formulation material, polyfluorinated ethylene added N- methyl maternal heart set one as the active material paste were made. Μ心__Negative electrode For the positive electrode active material ‘LlMn2〇4 is used, the same as the negative electrode
地’調配碳黑作為導電性賦予材料，在聚氟化亞乙埽添加N -甲基洛伽作為黏著劑來調製正極活性物質糊而成者。 其次，在負極集電體和正極集電體殘留負極集電片和正極 集電片之形成部而分別塗佈糊後，切斷為先前圖2所示之形 狀，製作成正極集電片和負極集電片。 7 ，其次，透過聚丙烯製分隔片疊層4片正極和5片負極，而 製作出外形尺寸為82xl5Gx4mm之_子二次電池，但可製 作在負極集電片和正極集電U會產生毛叙具優異特性 鐘離子電池。 ’ (產業上之可利用性） 本發明疊層型二次電池為沿單純之線切斷由以金屬箱作 為集電體之正極及負極所製成—體的負極集電片和正極集 電片之形狀，可以容易地進行切斷。而且，因為沿單純之: 進行切斷，因此不容易出現毛邊等，在進行沖切切斷之情況 時’亦可容易調整沖切用之模具，可提高疊層型二次電池之 生產性。 【圖式簡單說明】 098116681 18 201042798 圖1為說明本發明疊層型二次電池之實施形態的圖。 圖2為依序說明本發明實施形態疊層型二次電池之製造 步驟的圖。 圖3為說明正極和負極之製作方法的圖。 圖4為依序說明本發明另一實施形態疊層型二次電池之 製造步驟的圖。 圖5為說明另一實施形態正極和負極之製作方法的圖。 〇 圖6為說明本發明電極之製造步驟的圖。 圖7為說明電池組的圖。 圖8為說明製作集電片之習知方法的圖。 【主要元件符號說明】 1 疊層型二次電池 2 電池元件 3 膜狀外裝材料 4 負極 5 正極 6 分隔片 8 對向部分 9、91、92、93、94、95 切斷線 15 負極引線 15A1 〜15A4 電極引線 17 正極引線 098116681 19 201042798 17B1 〜17B3 電極引線 19A1 〜19A3 連結導電構件 21A、21B 片端子 23A、23B 連接引線 25A、25B 芯線部分 27A、27B 連接部 29A > 29B 黏合部 41 負極集電體 41A、41B 帶狀體 43 負極活性物質塗佈部 43A 2個部分長度之負極活性物質塗佈部 45 負極活性物質非塗佈部 47 負極集電片 51 正極集電體 53 正極活性物質塗佈部 55 正極活性物質非塗佈部 57 正極集電片 61 融著部 63 無孔膜 100 電池組 098116681 20The carbon black is used as a conductivity imparting material, and a positive electrode active material paste is prepared by adding N-methyllogan as an adhesive to the polyfluorinated ethylene hydride. Next, after the negative electrode current collector and the positive electrode current collector are left in the formation portions of the negative electrode current collecting sheet and the positive electrode current collecting sheet, respectively, the paste is applied, and then cut into the shape shown in FIG. 2 to prepare a positive electrode current collecting sheet and Negative current collector tab. 7 . Secondly, four positive electrodes and five negative electrodes are laminated through a polypropylene separator to produce a secondary battery having an outer dimension of 82 x 15 G x 4 mm, but can be produced on the negative current collecting tab and the positive current collecting U. Expressed the excellent characteristics of the clock ion battery. (Industrial Applicability) The laminated secondary battery of the present invention is a negative electrode current collecting sheet and a positive electrode current collector which are formed by cutting a positive electrode and a negative electrode which are made of a metal case as a current collector. The shape of the sheet can be easily cut. In addition, it is not easy to cause burrs or the like, and it is easy to adjust the die for punching, and the productivity of the laminated secondary battery can be improved. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view for explaining an embodiment of a laminated secondary battery of the present invention. Fig. 2 is a view sequentially showing the steps of manufacturing a laminated secondary battery according to an embodiment of the present invention. Fig. 3 is a view for explaining a method of producing a positive electrode and a negative electrode. Fig. 4 is a view showing the steps of manufacturing a laminated secondary battery according to another embodiment of the present invention. Fig. 5 is a view for explaining a method of producing a positive electrode and a negative electrode according to another embodiment. Figure 6 is a view for explaining the steps of manufacturing the electrode of the present invention. Fig. 7 is a view for explaining a battery pack. Fig. 8 is a view for explaining a conventional method of manufacturing a current collecting tab. [Main component symbol description] 1 Laminated secondary battery 2 Battery component 3 Membrane exterior material 4 Negative electrode 5 Positive electrode 6 Separator 8 Opposite part 9, 91, 92, 93, 94, 95 Cutting line 15 Negative electrode lead 15A1 to 15A4 Electrode lead 17 Positive lead 098116681 19 201042798 17B1 to 17B3 Electrode lead 19A1 to 19A3 Connecting conductive member 21A, 21B Lead terminal 23A, 23B Connecting lead 25A, 25B Core portion 27A, 27B Connecting portion 29A > 29B Bonding portion 41 Negative Current collectors 41A and 41B Band 43 Negative electrode active material application unit 43A Two-part length negative electrode active material application unit 45 Negative electrode active material non-coating unit 47 Negative current collector sheet 51 Positive electrode current collector 53 Positive electrode active material Coating portion 55 Positive electrode active material non-coating portion 57 Positive electrode current collecting sheet 61 Melting portion 63 Non-porous film 100 Battery pack 098116681 20