JP2004071301A - Manufacturing method of case for storage element - Google Patents
Manufacturing method of case for storage element Download PDFInfo
- Publication number
- JP2004071301A JP2004071301A JP2002227691A JP2002227691A JP2004071301A JP 2004071301 A JP2004071301 A JP 2004071301A JP 2002227691 A JP2002227691 A JP 2002227691A JP 2002227691 A JP2002227691 A JP 2002227691A JP 2004071301 A JP2004071301 A JP 2004071301A
- Authority
- JP
- Japan
- Prior art keywords
- storage element
- film
- case
- power storage
- manufacturing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
Abstract
Description
【0001】
【発明の属する技術分野】
本発明は、蓄電素子用ケースの製造方法に関する。
【0002】
【従来の技術】
電池には、正極、負極および電解液を有する発電要素を、この発電要素の正負極に接続されるリードの先端部のみを突出させてラミネートフィルム等のフィルムで覆い、密閉したものがある。たとえばカード型電池は、発電要素をラミネートフィルムで密封して形成された電池を、カード型の外装ケース内に収納して形成されている。
【0003】
発電要素をラミネートフィルムで密封して形成された電池には、たとえば、発電要素をラミネートフィルムの表面上に配した状態で、ラミネートフィルムをそのまま折曲げて周縁をヒートシールした電池がある。
【0004】
また、発電要素をラミネートフィルムで密封した電池の構成は、キャパシタにおいても採用されている。すなわち、電解液と一対の電極を有する充放電要素をラミネートフィルムで密封してキャパシターが形成されている。
【0005】
上述の構成の電池およびキャパシタ(以下、蓄電素子と称する)に用いられるラミネートフィルムは、一般的には、耐透水性と絶縁性を確保するために、金属層と、樹脂層とが積層して形成されている。具体的には、少なくとも金属層の両面に樹脂層が積層した構造を有している。このラミネートフィルムにおいて、金属層が耐透水性を、樹脂層が絶縁性を確保している。
【0006】
しかしながら、ラミネートフィルムは、発電要素および充放電要素(以下、蓄電要素と称する)と対向する最内周面は電気絶縁性が要求されることから、最内周面が樹脂層で形成されることが求められている。
【0007】
近年は蓄電素子において高性能化が求められており、電池およびキャパシタの蓄電要素の体格を大きくすることで容量の増加が図られている。蓄電要素の体格が大きく(厚みが厚くなる)なると、蓄電要素の周縁部のラミネートフィルムにしわが寄った状態で封着が行われるようになる。しわが寄った状態での封着は、封着不良が生じやすく、封着不良が生じると蓄電要素、特に電解液が漏出したり、水分が混入して蓄電素子の性能が低下することとなる。
【0008】
このような封着不良の発生を押さえるために、あらかじめ絞り加工を施して蓄電要素を収容する略凹字状の蓄電要素収容部をラミネートフィルムに形成しておき、この蓄電要素収容部に蓄電要素を配した状態でラミネートフィルムを封着した蓄電素子が開発されている。
【0009】
たとえば、特開2001−291497号には、片面に凹部を形成するか両面に凹部を形成した少なくとも、基材層、バリア層、ヒートシール層からなる積層体を用いて2つ折りして、ポリマー電池本体を収納し折り曲げ辺以外の辺をヒートシールして密封するポリマー電池が示されている。
【0010】
そして、蓄電素子は充放電を繰り返すと蓄電要素が発熱するため、冷却性の観点から、一対の蓄電要素収容部を形成しておき、この一対の蓄電要素収容部に形成された空間に蓄電要素を収容する構成が好ましい。
【0011】
蓄電要素収容部を有するラミネートフィルム(以下、蓄電素子用ケースと称する)の製造は、ラミネートフィルムに絞り加工、真空成形、圧空成形等の加工を施すことで行うことができる。
【0012】
ラミネートフィルムに複数の蓄電要素収容部を形成する加工時に、複数の蓄電要素収容部の間の部分のラミネートフィルムは、互いに対向する蓄電要素収容部方向に引っ張られることとなる。このため、この複数の蓄電要素収容部の間の部分において破れやピンホールが発生しやすいという問題があった。
【0013】
【発明が解決しようとする課題】
本発明は上記実状に鑑みてなされたものであり、複数の蓄電要素収容部の間の部分に破れやピンホールが発生することなく蓄電素子用ケースを製造することができる蓄電素子用ケースの製造方法を提供することを課題とする。
【0014】
【課題を解決するための手段】
上記課題を解決するために検討を重ねた結果、本発明者は、複数の蓄電要素収容部となる部分の間のにたるみを付与した状態で、絞り加工により蓄電素子収容部を製造する製造方法が上記課題を解決できることを見いだした。
【0015】
すなわち、本発明の蓄電素子用ケースの製造方法は、フィルムの少なくとも二カ所に同時に絞り加工を施して、少なくとも二つの蓄電要素収容部を有する蓄電素子用ケースを製造する蓄電素子用ケースの製造方法において、フィルムは、蓄電要素収容部となる少なくとも二カ所の間の部分にたるみが付与された状態で絞り加工が施されることを特徴とする。
【0016】
本発明の蓄電素子用ケースの製造方法は、たるみが付与された状態で複数箇所に絞り加工が施されるため、加工時にフィルムが対向する方向に引っ張られても、このたるみを形成していたフィルムが蓄電要素収容部に流れる。この結果、本発明の製造方法により製造された蓄電素子用ケースは、破れやピンホールが発生しなくなっている。
【0017】
【発明の実施の形態】
本発明の蓄電素子用ケースの製造方法は、フィルムの少なくとも二カ所に同時に絞り加工を施して、少なくとも二つの蓄電要素収容部を有する蓄電素子用ケースを製造する製造方法である。すなわち、フィルムの少なくとも二カ所に同時に絞り加工を施すことで、一度に少なくとも二つの蓄電要素収容部を有する蓄電素子用ケースを製造することができる。
【0018】
本発明の蓄電素子用ケースの製造方法は、フィルムが蓄電要素収容部となる少なくとも二カ所の間の部分にたるみが付与された状態で絞り加工が施される。すなわち、本発明の製造方法は、フィルムにたるみが付与された状態で絞り加工が施されるため、加工時にフィルムが対向する方向に引っ張られても、このたるみを形成していたフィルムが蓄電要素収容部に流れるようになる。この結果、本発明の製造方法は、破れやピンホールが発生しなくなっている。
【0019】
絞り加工は、フィルムをダイスとしわ押さえ板とで支持した状態でパンチを押圧する加工であり、しわ押さえ板が突条(ビード)を有することが好ましい。なお、ダイスは、しわ押さえ板の突条に対応した型表面を有する。しわ押さえ板が突条を有することで、しわ押さえ板とダイスとでフィルムを支持したときに、この突条の近傍でフィルムがしわ押さえ板(絞り加工の成形型)から浮き上がるようになる。フィルムの浮き上がりは、しわ押さえ板との間にすき間を生じさせる。すなわち、絞り加工時にフィルムにたるみが付与される。
【0020】
なお、本発明の製造方法において、絞り加工は、パンチが下方から鉛直方向の上方に変位してフィルムを押圧する。
【0021】
また、突条がもうけられたしわ押さえ板を用いて絞り加工を行うことで、加工後のケースの蓄電要素収容部の間に、突条に対応した溝が形成される。この溝は、蓄電素子を製造するためにケースを折り曲げる時の折り目として用いることができる。溝にそって折り曲げることで、蓄電要素収容部の位置決めを簡単に行うことができる。
【0022】
突条は、複数のパンチの間のそれぞれの中央にもうけられたことが好ましい。複数のパンチのそれぞれの中央に突条が設けられることで、突条からパンチまでの距離が等しくなり、絞り加工時にそれぞれの蓄電要素収容部方向へ流れるフィルム量が均一となり破れが生じにくくなり、折り曲げたときの蓄電要素収容部の位置決めを簡単に行うことができる。
【0023】
本発明の製造方法において、突条の断面形状は、特に限定されるものではない。すなわち、絞り加工時に蓄電要素収容部方向へ流れるフィルム量を確保できるたるみをフィルムに付与できる断面形状であればよい。蓄電要素収容部に収容される蓄電要素の大きさにより絞り加工の加工深さが異なることから絞り加工時のフィルムの流れ量が変化するためである。
【0024】
フィルムは、金属層と、樹脂層とが、積層した複合シートであることが好ましい。フィルムが複合シートよりなることで、蓄電素子の耐透水性および電気絶縁性が確保できる。具体的には、少なくとも金属層の両面に樹脂層が積層した構造を有している。この複合シートにおいて、金属層が耐透水性を、樹脂層が絶縁性を確保している。さらに好ましくは、少なくとも金属層の両面に樹脂層が積層してなる複合シートである。
【0025】
複合シートにおいて、金属層と樹脂層のそれぞれを構成する金属および樹脂の種類は、耐透水性および電気絶縁性を確保できる材質であれば特に限定されるものではない。
【0026】
フィルムは、複合シートであれば特に限定されるものではなく、従来のポリマー電池において電極体を密封しているラミネートシート(ラミネートフィルム)を用いることができる。
【0027】
本発明の製造方法により製造される蓄電素子用ケースを用いて製造される蓄電素子とは、電力を保持できる素子であればよい。たとえば、キャパシタや電池をあげることができる。
【0028】
キャパシタにおいて蓄電要素は、一対の電極と電解液とを有する。一対の電極および電解液については、特に限定されるものではなく、従来公知の部材を用いることができる。
【0029】
また、電池において蓄電要素は、正負の電極と電解液とを有する部材である。正負の電極よび電解液については、特に限定されるものではなく、従来公知の材質を用いることができる。
【0030】
本発明の製造方法により製造された蓄電素子用ケースは、蓄電要素収容部に蓄電要素が配された状態で折り曲げて、折り曲げた辺以外の蓄電要素周縁部の周縁部を封止することで、蓄電要素が密封された蓄電素子を製造することができる。また、蓄電素子溶ケースの封止は、熱融着により行うことが好ましい。
【0031】
折り曲げられたときに同一の蓄電要素が収容される隣接した一対の蓄電要素収容部の間隔が短いことが好ましい。一対の蓄電要素収容部の間隔が短くなることで、フィルムの使用量が少なくなり、材料コストを低減できる。また、溶着されない折り曲げ部に蓄電要素に含まれる電解液が侵入しても、この折り曲げ部が短いため、蓄電要素の性能を低下させるほどの電界液量が蓄電要素収容部から出ない。すなわち、蓄電要素の蓄電性能の定価が抑えられる効果を有する。
【0032】
本発明の蓄電素子用ケースの製造方法は、たるみが付与された状態で絞り加工が施されるため、加工時にフィルムが対向する方向に引っ張られても、このたるみを形成していたフィルムが蓄電要素収容部に流れるようになる。この結果、本発明の製造方法は、破れやピンホールが発生しなくなっている。
【0033】
【実施例】
以下、実施例を用いて本発明を説明する。
【0034】
本発明の実施例として、リチウム電池用ケースを製造した。
【0035】
(実施例)
電池用ケースの材料として、厚さ110μmのラミネートフィルムを縦×横が210×290mmの大きさに切断した。このラミネートフィルムは、厚さ40μmのアルミニウム層の表面に厚さ30μmのナイロン層が、裏面に厚さ40μmのポリプロピレン(P.P.)層が形成された構造を有する。ラミネートフィルムの断面を図1に示した。
【0036】
つづいて、図2に示された金型を用いてラミネートフィルムに絞り加工を施した。
【0037】
図2に示された金型は、鉛直方向に上下動するとともに押圧面が上方に形成された2本のパンチ2、2と、2本のパンチ2、2の押圧面と対向して配されるとともにパンチ2、2の押圧面に対応した型表面を有するダイス3と、2本のパンチ2、2を保持するとともにダイス3との間でラミネートフィルム1を支持するしわ押さえ板4と、を有する。なお、パンチ2、2の間隔は、10mmであった。
【0038】
また、しわ押さえ板4の表面上でありかつ2本のダイス2、2の間の中央部には、ビード5がもうけられている。このビード5は、底辺が4mm、高さが3mmの略三角形状の断面形状を有する。
【0039】
絞り加工は、まず、しわ押さえ板4上にラミネートフィルム1をP.P.層がしわ押さえ板4と対向した状態で金型に配置した。配置されたラミネートフィルム1は、中央部がビード5により盛り上がった状態で配置された。
【0040】
つづいて、ダイス3を鉛直下方に変位して、ダイス3としわ押さえ板4との間でラミネートフィルム1を、しわが生じないように支持した。このとき、ビード5により生じたラミネートフィルム1のたるみは残っていた。
【0041】
その後、さらにダイス3を鉛直下方に変位させた。ダイス3の変位により、2本のパンチ2、2の押圧面がダイス3の型の内部に押し込まれた。このとき、しわ押さえ板4はダイス3とともに下方に変位を生じた。パンチ2、2がダイス3の内部に押し込まれることで、ラミネートフィルム1に凹字状の電池要素収容部が成形された。なお、ダイス3の変位は10mmであり、パンチ2、2により成形された電池要素収容部の深さも10mmとなった。このパンチ2、2がラミネートフィルム1を押圧した状態を図3に示した。
【0042】
以上の絞り加工により実施例のリチウム電池用ケースが製造できた。製造されたリチウム電池用ケースを図4に示した。
【0043】
製造されたリチウム電池用ケースは、ビード5により成形された溝11と、この溝11に対称に成形された電池要素収容部12、12を有する形状を有する。
【0044】
製造された実施例のリチウム電池用ケースにおいて、ビード5により成形された溝11の近傍には、破れやピンホールの発生がみられなかった。すなわち、この溝11の近傍においても、リチウム電池用ケースを構成するラミネートフィルムが十分な膜厚を有することがわかる。
【0045】
(電池の製造)
実施例において製造されたリチウム電池用ケースを用いてリチウム二次電池を製造した。
【0046】
まず、LiNiO2よりなる正極活物質と、カーボンよりなる導電剤と、ポリフッ化ビニリデン(PVDF)よりなる結着剤と、をN−メチル−2−ピロリドン(NMP)溶液に溶解させ、正極活物質ペーストを作製した。このペーストをコンマコータにてアルミ箔よりなる正極集電体の両面に塗布した。その後、この電極をロールプレス機に通して荷重をかけ、電極密度を向上させた正極板を作成した。
【0047】
この正極板は、所定の大きさにカットされ、電流取り出し用のリードタブ溶接部となる部分の電極合剤を掻き取ることでシート状正極が製造された。
【0048】
つづいて、グラファイトよりなる負極活物質と、PVDFよりなる結着剤と、をNMP溶液に溶解させ、負極活物質ペーストを作製した。このペーストを、正極と同様にコンマコータを用いて銅箔よりなる負極集電体の両面に塗布した。その後、このペーストが塗布された銅箔をロールプレス機に通して荷重をかけ、電極密度を上昇させた負極板を作製した。
【0049】
この負極板を所定の大きさにカットし、電流取り出し用のリードタブ溶接部となる部分の電極合剤を掻き取ることでシート状負極が製造された。
【0050】
以上で得られたシート状正極およびシート状負極を、厚さが25μmの微多孔性ポリプロピレンよりなるセパレータを介した状態で扁平形状に巻回させて、扁平巻回型電極体を形成した。そして、この扁平巻回型電極体のシート状の正極および負極の電極合剤が掻き取られた未塗布部に電極タブを融着させた。なお、正極および負極に融着された電極タブは、同一方向に突出した状態で取り付けられた。
【0051】
また、電解質であるLiPF6を、エチレンカーボネート(EC)とジエチルカーボネート(DEC)とを等体積比で混合した溶媒に、1mol/リットルの割合で溶解させた電解液を調製した。
【0052】
つづいて、作成された扁平巻回型電極体6を、上述のリチウム電池用ケースの電池要素収容部に収容した。扁平巻回型電極体の収容は、扁平巻回型電極体を電池要素収容部に対応した位置に配した状態で、リチウム電池用ケースをビードにより成形された溝で折り曲げてなされた。このとき、扁平巻回型電極体6に取り付けられた電極タブ61、61は、扁平巻回型電極体に接合されていない端部が折り曲げられたリチウム電池用ケースから露出していた。扁平巻回型電極体6をリチウム電池用ケースに収容する様子を図4に示した。
【0053】
そして、扁平巻回型電極体が収容された状態で電池要素収容部の内部に、電解液を注液し、リチウム電池用ケースの溝が形成された辺以外の電池要素収容部の周縁部を溶着して電極体および電解液を封入した。
【0054】
以上の手順により、リチウム二次電池が製造できた。
【0055】
製造されたリチウム二次電池は、リチウム電池用ケースの溝の近傍において破れやピンホールが見られなかった。
【0056】
(実施例の他の形態)
さらに、ビードの断面形状が三角形状であり、ビードが対向するダイスの該当部にはビードの外周形状と略一致する内周面を有する凹状の溝が形成されたダイスを用いてもよい。
【0057】
このビードと溝とを有する形態の実施例においても、成形後のラミネートフィルムには、破れやピンホールの発生が見られなかった。
【0058】
また、この形態において成形されたラミネートフィルムは、ビードにより押圧された部分に、明確な折れ線が形成されている。
【0059】
この折れ線により、リチウム二次電池を形成するときに、折り曲げや位置決めが容易となった。すなわち、本形態においては、絞り加工が可能となっただけでなく、リチウム二次電池の組み付けにおける生産性も向上した。
【0060】
なお、本実施例においては、ラミネートフィルムを用いて説明を行ったが、耐透水性と絶縁性が確保できる材質であれば、単層のフィルムを用いることができる。
【0061】
【発明の効果】
本発明の蓄電素子用ケースの製造方法は、たるみが付与された状態で絞り加工が施されるため、加工時にラミネートフィルムが対向する方向に引っ張られても、このたるみを形成していたラミネートフィルムが蓄電要素収容部に流れる。この結果、本発明の製造方法により製造された蓄電素子用ケースは、破れやピンホールが発生しなくなっている。
【図面の簡単な説明】
【図1】ラミネートフィルムの断面を示した図である。
【図2】金型の構成を示した図である。
【図3】金型のパンチがラミネートフィルムを押圧した状態を示した図である。
【図4】実施例のリチウム電池用ケースを示した図である。
【図5】扁平巻回型電極体をリチウム電池用ケースに収容する様子を示した図である。
【符号の説明】
1…ラミネートフィルム 11…溝
12…電池要素収容部 2…パンチ
3…ダイス 4…しわ押さえ板
5…ビード 6…扁平巻回型電極体
61…電極タブ[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for manufacturing a storage element case.
[0002]
[Prior art]
In some batteries, a power generating element having a positive electrode, a negative electrode, and an electrolyte is covered with a film such as a laminate film, with only the tips of leads connected to the positive and negative electrodes of the power generating element protruding and sealed. For example, a card type battery is formed by housing a battery formed by sealing a power generation element with a laminate film in a card type outer case.
[0003]
As a battery formed by sealing a power generating element with a laminate film, for example, there is a battery in which a laminate film is bent as it is and a peripheral edge is heat-sealed with the power generating element arranged on the surface of the laminate film.
[0004]
The configuration of a battery in which a power generation element is sealed with a laminate film is also employed in a capacitor. That is, a capacitor is formed by sealing the electrolytic solution and the charge / discharge element having a pair of electrodes with a laminate film.
[0005]
In general, a laminated film used for a battery and a capacitor (hereinafter, referred to as an electric storage element) having the above-described configuration is formed by laminating a metal layer and a resin layer in order to ensure water resistance and insulation. Is formed. Specifically, it has a structure in which resin layers are laminated on at least both surfaces of a metal layer. In this laminated film, the metal layer secures water resistance and the resin layer secures insulation.
[0006]
However, since the innermost peripheral surface of the laminated film facing the power generation element and the charge / discharge element (hereinafter, referred to as a power storage element) is required to have electrical insulation, the innermost peripheral surface is formed of a resin layer. Is required.
[0007]
In recent years, higher performance has been demanded for power storage elements, and an increase in capacity has been achieved by increasing the size of power storage elements of batteries and capacitors. When the physique of the electricity storage element becomes large (thickness becomes large), the sealing is performed in a state in which the laminate film on the periphery of the electricity storage element is wrinkled. Sealing in a wrinkled state tends to cause poor sealing, and when poor sealing occurs, power storage elements, especially electrolyte leaks out, or water is mixed in, and the performance of the power storage element deteriorates. .
[0008]
In order to suppress the occurrence of such poor sealing, a substantially concave-shaped storage element housing portion for housing the storage element is formed in advance on the laminate film by performing drawing processing, and the storage element is stored in the storage element housing section. There has been developed an electric storage element in which a laminated film is sealed with the laminate.
[0009]
For example, Japanese Patent Application Laid-Open No. 2001-291497 discloses that a polymer battery is folded in two using at least a laminate comprising a base material layer, a barrier layer, and a heat seal layer having a concave portion formed on one surface or concave portions formed on both surfaces. A polymer battery is shown in which the main body is housed and the sides other than the bent sides are heat-sealed and sealed.
[0010]
Since the power storage element generates heat when charging and discharging are repeated, a pair of power storage element housings are formed from the viewpoint of cooling performance, and the power storage element is formed in a space formed in the pair of power storage element housings. Is preferable.
[0011]
The production of a laminated film having a storage element housing portion (hereinafter, referred to as a storage element case) can be performed by subjecting the laminated film to processing such as drawing, vacuum forming, and pressure forming.
[0012]
During the processing of forming a plurality of power storage element housings on the laminate film, the laminate film at a portion between the plurality of power storage element housings is pulled in the direction of the power storage element housings facing each other. For this reason, there has been a problem that tears and pinholes are likely to occur in a portion between the plurality of power storage element housings.
[0013]
[Problems to be solved by the invention]
SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has an object to manufacture a power storage element case that can manufacture a power storage element case without causing breakage or pinholes in a portion between a plurality of power storage element housings. It is an object to provide a method.
[0014]
[Means for Solving the Problems]
As a result of repeated studies to solve the above-described problems, the present inventor has found that a manufacturing method for manufacturing a power storage element housing section by drawing in a state in which a slack is provided between a plurality of power storage element housing sections. Found that the above problems could be solved.
[0015]
In other words, the method for manufacturing a case for a storage element of the present invention is a method for manufacturing a case for a storage element having at least two storage elements accommodating portions by simultaneously drawing at least two locations of a film. In the above, the film is subjected to a drawing process in a state in which a slack is given to at least a portion between at least two locations serving as a power storage element housing portion.
[0016]
In the method for manufacturing a power storage element case according to the present invention, since the drawing process is performed at a plurality of locations in a state where the sag is given, the sag is formed even when the film is pulled in the facing direction during the working. The film flows into the storage element housing. As a result, the storage element case manufactured by the manufacturing method of the present invention is free from breakage and pinholes.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
The method for manufacturing a power storage element case according to the present invention is a method for manufacturing a power storage element case having at least two power storage element housing portions by simultaneously drawing at least two locations of a film. That is, by simultaneously drawing at least two portions of the film, a case for a power storage element having at least two power storage element housing portions can be manufactured at a time.
[0018]
In the method for manufacturing a power storage element case according to the present invention, the drawing is performed in a state where the film has a slack at least between two locations serving as power storage element housing portions. That is, in the manufacturing method of the present invention, since the drawing is performed in a state where the sag is given to the film, even if the film is pulled in the facing direction at the time of the working, the film that has formed the sag remains in the electricity storage element. It will start to flow into the storage. As a result, in the manufacturing method of the present invention, breakage and pinholes do not occur.
[0019]
The drawing process is a process of pressing a punch while the film is supported by a die and a wrinkle holding plate, and it is preferable that the wrinkle holding plate has a ridge (bead). The die has a mold surface corresponding to the ridge of the wrinkle holding plate. Since the wrinkle-holding plate has the ridge, when the film is supported by the wrinkle-holding plate and the die, the film comes to rise from the wrinkle-holding plate (a drawing die) near the ridge. The lifting of the film creates a gap between the film and the wrinkle holding plate. That is, sag is given to the film at the time of drawing.
[0020]
In the manufacturing method of the present invention, in the drawing process, the punch is displaced upward from the lower side in the vertical direction to press the film.
[0021]
Also, by performing drawing using the wrinkle holding plate provided with the ridge, a groove corresponding to the ridge is formed between the power storage element housing portions of the processed case. This groove can be used as a fold when the case is bent to manufacture a power storage device. By folding along the groove, positioning of the electricity storage element housing portion can be easily performed.
[0022]
The ridge is preferably provided at the center of each of the plurality of punches. By providing a ridge at the center of each of the plurality of punches, the distance from the ridge to the punch becomes equal, the amount of film flowing in the direction of each storage element housing during drawing is uniform, and breakage is less likely to occur. The positioning of the power storage element housing portion when bent can be easily performed.
[0023]
In the manufacturing method of the present invention, the cross-sectional shape of the ridge is not particularly limited. That is, any cross-sectional shape may be used as long as the film can be given a slack enough to secure the amount of the film flowing in the direction of the power storage element accommodating portion during drawing. This is because the flow depth of the film at the time of the drawing changes because the processing depth of the drawing differs depending on the size of the power storage element accommodated in the power storage element housing portion.
[0024]
The film is preferably a composite sheet in which a metal layer and a resin layer are laminated. When the film is made of the composite sheet, the water storage resistance and the electric insulation of the electric storage element can be secured. Specifically, it has a structure in which resin layers are laminated on at least both surfaces of a metal layer. In this composite sheet, the metal layer secures water resistance and the resin layer secures insulation. More preferably, it is a composite sheet in which a resin layer is laminated on at least both surfaces of a metal layer.
[0025]
In the composite sheet, the type of the metal and the resin constituting each of the metal layer and the resin layer is not particularly limited as long as the material can ensure water resistance and electrical insulation.
[0026]
The film is not particularly limited as long as it is a composite sheet, and a laminate sheet (laminate film) that seals the electrode body in a conventional polymer battery can be used.
[0027]
The power storage element manufactured using the power storage element case manufactured by the manufacturing method of the present invention may be any element that can hold power. For example, a capacitor and a battery can be given.
[0028]
The storage element in the capacitor has a pair of electrodes and an electrolyte. The pair of electrodes and the electrolytic solution are not particularly limited, and conventionally known members can be used.
[0029]
In the battery, the storage element is a member having positive and negative electrodes and an electrolyte. The positive and negative electrodes and the electrolyte are not particularly limited, and conventionally known materials can be used.
[0030]
The power storage element case manufactured by the manufacturing method of the present invention is bent in a state where the power storage element is arranged in the power storage element accommodating portion, and by sealing the peripheral edge of the power storage element peripheral edge other than the bent side, A power storage element in which the power storage element is sealed can be manufactured. Further, it is preferable to seal the storage element fusion case by heat fusion.
[0031]
It is preferable that the interval between a pair of adjacent power storage element housing portions that house the same power storage element when bent is short. By reducing the distance between the pair of power storage element housing portions, the amount of film used is reduced, and material costs can be reduced. Further, even if the electrolytic solution contained in the power storage element enters the bent portion that is not welded, the bent portion is short, so that the amount of the electrolytic solution that deteriorates the performance of the power storage element does not come out of the power storage element housing portion. That is, there is an effect that the price of the power storage performance of the power storage element is suppressed.
[0032]
In the method for manufacturing a case for a storage element of the present invention, the drawing process is performed in a state in which the sag is given, so that even if the film is pulled in the facing direction at the time of working, the film forming the sag is charged. It will flow into the element housing. As a result, in the manufacturing method of the present invention, breakage and pinholes do not occur.
[0033]
【Example】
Hereinafter, the present invention will be described using examples.
[0034]
As an example of the present invention, a case for a lithium battery was manufactured.
[0035]
(Example)
As a material for the battery case, a laminate film having a thickness of 110 μm was cut into a size of 210 × 290 mm in length × width. The laminated film has a structure in which a 30 μm-thick nylon layer is formed on the surface of an aluminum layer having a thickness of 40 μm, and a polypropylene (PP) layer having a thickness of 40 μm is formed on the back surface. FIG. 1 shows a cross section of the laminate film.
[0036]
Subsequently, drawing was performed on the laminated film using the mold shown in FIG.
[0037]
The mold shown in FIG. 2 is vertically opposed and has two
[0038]
A
[0039]
In the drawing process, first, the laminate film 1 is placed on the
[0040]
Subsequently, the
[0041]
Thereafter, the
[0042]
By the above drawing, the lithium battery case of the example was manufactured. FIG. 4 shows the manufactured lithium battery case.
[0043]
The manufactured lithium battery case has a shape having a
[0044]
In the manufactured lithium battery case of the example, no breakage or pinholes were observed near the
[0045]
(Manufacture of batteries)
A lithium secondary battery was manufactured using the lithium battery case manufactured in the example.
[0046]
First, a cathode active material made of LiNiO 2 , a conductive agent made of carbon, and a binder made of polyvinylidene fluoride (PVDF) are dissolved in an N-methyl-2-pyrrolidone (NMP) solution, A paste was made. This paste was applied to both surfaces of a positive electrode current collector made of aluminum foil using a comma coater. Thereafter, the electrode was passed through a roll press to apply a load, and a positive electrode plate with an improved electrode density was prepared.
[0047]
This positive electrode plate was cut into a predetermined size, and a sheet-shaped positive electrode was manufactured by scraping off the electrode mixture at a portion to be a lead tab weld for current extraction.
[0048]
Subsequently, a negative electrode active material made of graphite and a binder made of PVDF were dissolved in an NMP solution to prepare a negative electrode active material paste. This paste was applied to both surfaces of a negative electrode current collector made of copper foil using a comma coater in the same manner as the positive electrode. Thereafter, the copper foil to which the paste was applied was passed through a roll press to apply a load, thereby producing a negative electrode plate having an increased electrode density.
[0049]
This negative electrode plate was cut into a predetermined size, and a sheet-shaped negative electrode was manufactured by scraping off the electrode mixture at a portion to be a lead tab weld for current extraction.
[0050]
The sheet-shaped positive electrode and the sheet-shaped negative electrode obtained as described above were wound in a flat shape with a separator made of microporous polypropylene having a thickness of 25 μm interposed therebetween to form a flat wound electrode body. Then, an electrode tab was fused to an uncoated portion of the flat wound electrode body where the electrode mixture of the positive electrode and the negative electrode was scraped off. In addition, the electrode tabs fused to the positive electrode and the negative electrode were attached so as to protrude in the same direction.
[0051]
In addition, an electrolyte was prepared by dissolving LiPF 6 as an electrolyte in a solvent in which ethylene carbonate (EC) and diethyl carbonate (DEC) were mixed at an equal volume ratio at a rate of 1 mol / liter.
[0052]
Subsequently, the produced flat wound electrode body 6 was housed in the battery element housing section of the above-described lithium battery case. The flat spirally wound electrode body was housed by bending the lithium battery case in a groove formed by a bead with the flat spirally wound electrode body arranged at a position corresponding to the battery element housing portion. At this time, the
[0053]
Then, in the state where the flat wound electrode body is housed, an electrolytic solution is injected into the inside of the battery element housing part, and the periphery of the battery element housing part other than the side where the groove of the lithium battery case is formed is removed. The electrode body and the electrolyte were sealed by welding.
[0054]
By the above procedure, a lithium secondary battery was manufactured.
[0055]
In the manufactured lithium secondary battery, no break or pinhole was observed near the groove of the lithium battery case.
[0056]
(Other forms of the embodiment)
Further, a die having a triangular cross-sectional shape of the bead and a concave groove having an inner peripheral surface substantially matching the outer peripheral shape of the bead may be used in a corresponding portion of the die facing the bead.
[0057]
Also in the embodiment having the bead and the groove, no breakage or pinhole was found in the laminated film after molding.
[0058]
In the laminate film formed in this mode, a clear broken line is formed in a portion pressed by the bead.
[0059]
The bent line facilitates bending and positioning when forming a lithium secondary battery. That is, in the present embodiment, not only the drawing process is enabled, but also the productivity in assembling the lithium secondary battery is improved.
[0060]
In the present embodiment, the description has been made using a laminated film. However, a single-layer film can be used as long as the material can ensure water resistance and insulation.
[0061]
【The invention's effect】
The method for manufacturing a power storage element case according to the present invention is characterized in that the drawing process is performed in a state where the sag is provided, so that even when the laminate film is pulled in the facing direction at the time of working, the laminated film that formed the sag Flows into the storage element housing. As a result, the storage element case manufactured by the manufacturing method of the present invention is free from breakage and pinholes.
[Brief description of the drawings]
FIG. 1 is a diagram showing a cross section of a laminate film.
FIG. 2 is a diagram showing a configuration of a mold.
FIG. 3 is a view showing a state where a punch of a mold presses a laminate film.
FIG. 4 is a view showing a lithium battery case according to an embodiment.
FIG. 5 is a diagram showing a state in which the flat wound electrode body is housed in a lithium battery case.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ...
Claims (3)
該フィルムは、該蓄電要素収容部となる少なくとも二カ所の間の部分にたるみが付与された状態で該絞り加工が施されることを特徴とする蓄電素子用ケースの製造方法。At least two places of the film are simultaneously subjected to drawing processing, a method for manufacturing a storage element case for manufacturing a storage element case having at least two storage element housing portions,
A method for manufacturing a case for a storage element, wherein the film is subjected to the drawing process in a state in which a slack is given to at least a portion between at least two places serving as the storage element housing portion.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002227691A JP4140311B2 (en) | 2002-08-05 | 2002-08-05 | Method for manufacturing case for power storage element |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002227691A JP4140311B2 (en) | 2002-08-05 | 2002-08-05 | Method for manufacturing case for power storage element |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2004071301A true JP2004071301A (en) | 2004-03-04 |
JP4140311B2 JP4140311B2 (en) | 2008-08-27 |
Family
ID=32014649
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2002227691A Expired - Fee Related JP4140311B2 (en) | 2002-08-05 | 2002-08-05 | Method for manufacturing case for power storage element |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP4140311B2 (en) |
Cited By (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005285506A (en) * | 2004-03-29 | 2005-10-13 | Toyota Motor Corp | Manufacturing method of laminated battery and laminated battery |
JP2009533834A (en) * | 2006-04-17 | 2009-09-17 | エルジー・ケム・リミテッド | Pouch type battery |
KR101253660B1 (en) * | 2010-08-09 | 2013-04-11 | 주식회사 엘지화학 | Process for Preparing of Battery Case for Improving Accuracy |
JP2015537338A (en) * | 2013-02-05 | 2015-12-24 | エルジー・ケム・リミテッド | Battery cell including step structure |
KR101816946B1 (en) * | 2013-10-30 | 2018-01-09 | 주식회사 엘지화학 | Cell case, its manufacturing metallic mold and manufacturing method, battery cell |
WO2018100927A1 (en) * | 2016-11-29 | 2018-06-07 | 株式会社村田製作所 | Secondary cell and device |
KR20180071983A (en) * | 2016-12-20 | 2018-06-28 | 에스케이이노베이션 주식회사 | Pouch type secondary battery and method of fabricating same |
WO2018117654A1 (en) * | 2016-12-20 | 2018-06-28 | 에스케이이노베이션 주식회사 | Pouch-type secondary battery and manufacturing method therefor |
JP2018129203A (en) * | 2017-02-09 | 2018-08-16 | 日産自動車株式会社 | Manufacturing method of film-covered battery and film-covered battery |
JP2018527719A (en) * | 2015-11-03 | 2018-09-20 | エルジー・ケム・リミテッド | Secondary battery pouch exterior |
KR20180116563A (en) * | 2017-04-17 | 2018-10-25 | 주식회사 엘지화학 | Pouch-type Secondary Battery Having Preliminary Cutting Line |
JP2019500734A (en) * | 2016-09-12 | 2019-01-10 | エルジー・ケム・リミテッド | Pouch exterior material for secondary battery, pouch-type secondary battery using the same, and manufacturing method thereof |
KR20190010434A (en) * | 2017-07-20 | 2019-01-30 | 주식회사 엘지화학 | Pouch case for secondary battery, pouch type secondary battery and manufacturing method thereof using the same |
KR20190032609A (en) * | 2016-12-06 | 2019-03-27 | 에스케이이노베이션 주식회사 | Secondary battery module |
CN110048036A (en) * | 2019-04-19 | 2019-07-23 | 桑顿新能源科技有限公司 | Reinforcing rib piece and preparation method thereof, battery core and preparation method thereof and soft-package battery |
CN110870090A (en) * | 2018-03-06 | 2020-03-06 | 株式会社Lg化学 | Apparatus and method for manufacturing pouch and method for manufacturing secondary battery |
JP2020068197A (en) * | 2018-10-23 | 2020-04-30 | エスケー イノベーション カンパニー リミテッドSk Innovation Co.,Ltd. | Battery cell |
CN111357130A (en) * | 2018-03-09 | 2020-06-30 | 株式会社Lg化学 | Method of manufacturing secondary battery and pouch for secondary battery |
JP2020521295A (en) * | 2018-01-31 | 2020-07-16 | エルジー・ケム・リミテッド | Secondary battery manufacturing method, secondary battery pouch manufacturing method, and secondary battery pouch |
US10763463B2 (en) | 2015-06-29 | 2020-09-01 | Sk Innovation Co., Ltd. | Secondary battery and method for manufacturing the same |
JP2020179419A (en) * | 2019-04-26 | 2020-11-05 | キヤノンマシナリー株式会社 | Drawing apparatus, drawing method, secondary battery manufacturing apparatus, and secondary battery manufacturing method |
KR20210038230A (en) * | 2019-09-30 | 2021-04-07 | 에스케이이노베이션 주식회사 | Pouch Case, Pouch Type Secondary Battery And Manufacturing Method Thereof |
WO2021111969A1 (en) | 2019-12-03 | 2021-06-10 | 株式会社エンビジョンAescジャパン | Battery, film production method, and battery production method |
JP2021518978A (en) * | 2019-03-04 | 2021-08-05 | エルジー・ケム・リミテッド | Secondary battery case and secondary battery |
KR20210110556A (en) * | 2017-05-10 | 2021-09-08 | 주식회사 엘지에너지솔루션 | Battery Case Having Buffering Recess Portion formed at Connection Portion Between Two Receiving parts |
WO2021261698A1 (en) * | 2020-06-26 | 2021-12-30 | 주식회사 엘지에너지솔루션 | Pouch, apparatus for molding pouch, and method for manufacturing secondary battery comprising pouch |
CN114424387A (en) * | 2019-12-17 | 2022-04-29 | 株式会社Lg新能源 | Secondary battery case and secondary battery |
US11577447B2 (en) * | 2018-01-30 | 2023-02-14 | Lg Energy Solution, Ltd. | Pouch forming apparatus and method |
JP2023513775A (en) * | 2020-06-04 | 2023-04-03 | エルジー エナジー ソリューション リミテッド | Pouch forming apparatus and forming method |
JP7537004B2 (en) | 2020-08-19 | 2024-08-20 | エルジー エナジー ソリューション リミテッド | Pouch-type secondary battery and battery module |
JP7568389B2 (ja) | 2018-10-23 | 2024-10-16 | エスケー オン カンパニー リミテッド | バッテリーセル |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102368727B1 (en) * | 2018-01-24 | 2022-02-28 | 주식회사 엘지에너지솔루션 | Pouch for secondary battery and die forming the same |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001219468A (en) * | 2000-02-07 | 2001-08-14 | Dainippon Printing Co Ltd | Embossing molding device |
JP2002050326A (en) * | 2000-05-25 | 2002-02-15 | Sumitomo Electric Ind Ltd | Drawing method of battery package film, laminated film, and forming method of battery |
JP2002367574A (en) * | 2001-06-11 | 2002-12-20 | Mitsubishi Electric Corp | Battery and portable terminal |
-
2002
- 2002-08-05 JP JP2002227691A patent/JP4140311B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001219468A (en) * | 2000-02-07 | 2001-08-14 | Dainippon Printing Co Ltd | Embossing molding device |
JP2002050326A (en) * | 2000-05-25 | 2002-02-15 | Sumitomo Electric Ind Ltd | Drawing method of battery package film, laminated film, and forming method of battery |
JP2002367574A (en) * | 2001-06-11 | 2002-12-20 | Mitsubishi Electric Corp | Battery and portable terminal |
Cited By (85)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005285506A (en) * | 2004-03-29 | 2005-10-13 | Toyota Motor Corp | Manufacturing method of laminated battery and laminated battery |
JP2009533834A (en) * | 2006-04-17 | 2009-09-17 | エルジー・ケム・リミテッド | Pouch type battery |
US8501343B2 (en) | 2006-04-17 | 2013-08-06 | Lg Chem, Ltd. | Pouch-type battery |
KR101253660B1 (en) * | 2010-08-09 | 2013-04-11 | 주식회사 엘지화학 | Process for Preparing of Battery Case for Improving Accuracy |
US10014556B2 (en) | 2013-02-05 | 2018-07-03 | Lg Chem, Ltd. | Battery cell including stepped structure |
JP2015537338A (en) * | 2013-02-05 | 2015-12-24 | エルジー・ケム・リミテッド | Battery cell including step structure |
KR101816946B1 (en) * | 2013-10-30 | 2018-01-09 | 주식회사 엘지화학 | Cell case, its manufacturing metallic mold and manufacturing method, battery cell |
US10763463B2 (en) | 2015-06-29 | 2020-09-01 | Sk Innovation Co., Ltd. | Secondary battery and method for manufacturing the same |
JP2018527719A (en) * | 2015-11-03 | 2018-09-20 | エルジー・ケム・リミテッド | Secondary battery pouch exterior |
EP3382771A4 (en) * | 2016-09-12 | 2019-04-24 | LG Chem, Ltd. | Secondary battery pouch exterior material, pouch type secondary battery using same, and manufacturing method therefor |
KR102064460B1 (en) | 2016-09-12 | 2020-01-10 | 주식회사 엘지화학 | Pouch case for secondary battery, pouch type secondary battery and manufacturing method thereof using the same |
US11935997B2 (en) | 2016-09-12 | 2024-03-19 | Lg Energy Solution, Ltd. | Pouch exterior for secondary battery, pouch-type secondary battery using the pouch exterior, and method of manufacturing the pouch-type secondary battery |
JP2019500734A (en) * | 2016-09-12 | 2019-01-10 | エルジー・ケム・リミテッド | Pouch exterior material for secondary battery, pouch-type secondary battery using the same, and manufacturing method thereof |
US10892448B2 (en) | 2016-09-12 | 2021-01-12 | Lg Chem, Ltd. | Pouch exterior for secondary battery, pouch-type secondary battery using the pouch exterior, and method of manufacturing the pouch-type secondary battery |
WO2018100927A1 (en) * | 2016-11-29 | 2018-06-07 | 株式会社村田製作所 | Secondary cell and device |
KR20210094165A (en) * | 2016-12-06 | 2021-07-28 | 에스케이이노베이션 주식회사 | Secondary battery module |
CN109643768A (en) * | 2016-12-06 | 2019-04-16 | Sk新技术株式会社 | Secondary battery module |
KR20190032609A (en) * | 2016-12-06 | 2019-03-27 | 에스케이이노베이션 주식회사 | Secondary battery module |
KR102348298B1 (en) | 2016-12-06 | 2022-01-07 | 에스케이온 주식회사 | Secondary battery module |
CN114421062A (en) * | 2016-12-06 | 2022-04-29 | Sk新技术株式会社 | Secondary battery module |
KR102284607B1 (en) * | 2016-12-06 | 2021-08-02 | 에스케이이노베이션 주식회사 | secondary battery module |
CN114421062B (en) * | 2016-12-06 | 2024-04-12 | Sk新能源株式会社 | Secondary battery module |
US11245141B2 (en) | 2016-12-06 | 2022-02-08 | Sk Innovation Co., Ltd. | Secondary battery module |
KR20220008926A (en) * | 2016-12-06 | 2022-01-21 | 에스케이온 주식회사 | Secondary battery module |
KR102545521B1 (en) * | 2016-12-06 | 2023-06-21 | 에스케이온 주식회사 | Secondary battery module |
CN115425338A (en) * | 2016-12-20 | 2022-12-02 | Sk新能源株式会社 | Pouch type secondary battery and method of manufacturing the same |
CN115425339B (en) * | 2016-12-20 | 2024-03-22 | Sk新能源株式会社 | Pouch type secondary battery and method for manufacturing the same |
KR102654935B1 (en) * | 2016-12-20 | 2024-04-04 | 에스케이온 주식회사 | Pouch type secondary battery and method of fabricating same |
CN115425339A (en) * | 2016-12-20 | 2022-12-02 | Sk新能源株式会社 | Pouch type secondary battery and method of manufacturing the same |
KR20240049241A (en) * | 2016-12-20 | 2024-04-16 | 에스케이온 주식회사 | Pouch type secondary battery and method of fabricating same |
CN115425338B (en) * | 2016-12-20 | 2024-05-24 | Sk新能源株式会社 | Pouch type secondary battery and method for manufacturing the same |
KR102672543B1 (en) | 2016-12-20 | 2024-06-05 | 에스케이온 주식회사 | Pouch type secondary battery and method of fabricating same |
KR20180071983A (en) * | 2016-12-20 | 2018-06-28 | 에스케이이노베이션 주식회사 | Pouch type secondary battery and method of fabricating same |
WO2018117654A1 (en) * | 2016-12-20 | 2018-06-28 | 에스케이이노베이션 주식회사 | Pouch-type secondary battery and manufacturing method therefor |
US11276893B2 (en) | 2016-12-20 | 2022-03-15 | Sk Innovation Co., Ltd. | Pouch secondary battery and method of fabricating the same |
JP2018129203A (en) * | 2017-02-09 | 2018-08-16 | 日産自動車株式会社 | Manufacturing method of film-covered battery and film-covered battery |
KR20180116563A (en) * | 2017-04-17 | 2018-10-25 | 주식회사 엘지화학 | Pouch-type Secondary Battery Having Preliminary Cutting Line |
KR102263480B1 (en) * | 2017-04-17 | 2021-06-11 | 주식회사 엘지에너지솔루션 | Pouch-type Secondary Battery Having Preliminary Cutting Line |
KR102385429B1 (en) * | 2017-05-10 | 2022-04-12 | 주식회사 엘지에너지솔루션 | Battery Case Having Buffering Recess Portion formed at Connection Portion Between Two Receiving parts |
KR20210110556A (en) * | 2017-05-10 | 2021-09-08 | 주식회사 엘지에너지솔루션 | Battery Case Having Buffering Recess Portion formed at Connection Portion Between Two Receiving parts |
EP3561899A4 (en) * | 2017-07-20 | 2020-04-15 | LG Chem, Ltd. | Secondary battery pouch sheath material, pouch-type secondary battery employing same, and method for manufacturing same |
US12057545B2 (en) | 2017-07-20 | 2024-08-06 | Lg Energy Solution, Ltd. | Pouch exterior material for secondary battery, pouch type secondary battery using the same, and method of manufacturing the same |
KR20190010434A (en) * | 2017-07-20 | 2019-01-30 | 주식회사 엘지화학 | Pouch case for secondary battery, pouch type secondary battery and manufacturing method thereof using the same |
US11239515B2 (en) | 2017-07-20 | 2022-02-01 | Lg Energy Solution, Ltd. | Pouch exterior material for secondary battery, pouch type secondary battery using the same, and method of manufacturing the same |
CN110062964A (en) * | 2017-07-20 | 2019-07-26 | 株式会社Lg化学 | The pouch-type exterior material of secondary cell, bag type secondary battery and its manufacturing method using it |
KR102109926B1 (en) | 2017-07-20 | 2020-05-12 | 주식회사 엘지화학 | Pouch case for secondary battery, pouch type secondary battery and manufacturing method thereof using the same |
CN110062964B (en) * | 2017-07-20 | 2022-07-19 | 株式会社Lg化学 | Pouch-type exterior material for secondary battery, pouch-type secondary battery using same, and method for manufacturing same |
US12017400B2 (en) | 2018-01-30 | 2024-06-25 | Lg Energy Solution, Ltd. | Pouch forming apparatus |
US11577447B2 (en) * | 2018-01-30 | 2023-02-14 | Lg Energy Solution, Ltd. | Pouch forming apparatus and method |
JP7080256B2 (en) | 2018-01-31 | 2022-06-03 | エルジー エナジー ソリューション リミテッド | Method of manufacturing secondary battery, manufacturing method of pouch for secondary battery and pouch for secondary battery |
JP2020521295A (en) * | 2018-01-31 | 2020-07-16 | エルジー・ケム・リミテッド | Secondary battery manufacturing method, secondary battery pouch manufacturing method, and secondary battery pouch |
US11613053B2 (en) | 2018-01-31 | 2023-03-28 | Lg Energy Solution, Ltd. | Method for manufacturing secondary battery, method for manufacturing pouch for secondary battery, and pouch for secondary battery |
CN110870090B (en) * | 2018-03-06 | 2022-05-24 | 株式会社Lg化学 | Apparatus and method for manufacturing pouch and method for manufacturing secondary battery |
CN114883706B (en) * | 2018-03-06 | 2024-04-30 | 株式会社Lg新能源 | Apparatus and method for manufacturing pouch, and method for manufacturing secondary battery |
CN110870090A (en) * | 2018-03-06 | 2020-03-06 | 株式会社Lg化学 | Apparatus and method for manufacturing pouch and method for manufacturing secondary battery |
CN114883706A (en) * | 2018-03-06 | 2022-08-09 | 株式会社Lg化学 | Apparatus and method for manufacturing pouch and method for manufacturing secondary battery |
US11673311B2 (en) | 2018-03-06 | 2023-06-13 | Lg Energy Solution, Ltd. | Apparatus for manufacturing pouch |
EP3699974A4 (en) * | 2018-03-09 | 2021-01-27 | Lg Chem, Ltd. | Method for manufacturing secondary battery and pouch for secondary battery |
CN111357130A (en) * | 2018-03-09 | 2020-06-30 | 株式会社Lg化学 | Method of manufacturing secondary battery and pouch for secondary battery |
CN111357130B (en) * | 2018-03-09 | 2023-03-28 | 株式会社Lg新能源 | Method of manufacturing secondary battery and pouch for secondary battery |
EP4338934A3 (en) * | 2018-03-09 | 2024-07-31 | LG Energy Solution, Ltd. | Method for manufacturing secondary battery and pouch for secondary battery |
US11283139B2 (en) | 2018-03-09 | 2022-03-22 | Lg Energy Solution, Ltd. | Method for manufacturing secondary battery and pouch for secondary battery |
US11799122B2 (en) | 2018-03-09 | 2023-10-24 | Lg Energy Solution, Ltd. | Pouch for a secondary battery including a bridge and accommodation grooves |
JP7568389B2 (ja) | 2018-10-23 | 2024-10-16 | エスケー オン カンパニー リミテッド | バッテリーセル |
JP2020068197A (en) * | 2018-10-23 | 2020-04-30 | エスケー イノベーション カンパニー リミテッドSk Innovation Co.,Ltd. | Battery cell |
JP2021518978A (en) * | 2019-03-04 | 2021-08-05 | エルジー・ケム・リミテッド | Secondary battery case and secondary battery |
CN110048036A (en) * | 2019-04-19 | 2019-07-23 | 桑顿新能源科技有限公司 | Reinforcing rib piece and preparation method thereof, battery core and preparation method thereof and soft-package battery |
CN110048036B (en) * | 2019-04-19 | 2024-05-17 | 桑顿新能源科技有限公司 | Reinforcing rib sheet and preparation method thereof, battery cell and preparation method thereof, and soft package battery |
JP2020179419A (en) * | 2019-04-26 | 2020-11-05 | キヤノンマシナリー株式会社 | Drawing apparatus, drawing method, secondary battery manufacturing apparatus, and secondary battery manufacturing method |
US11824214B2 (en) | 2019-09-30 | 2023-11-21 | Sk On Co., Ltd. | Pouch case, pouch type secondary battery and manufacturing method thereof |
KR102356020B1 (en) * | 2019-09-30 | 2022-01-27 | 에스케이온 주식회사 | Pouch Case, Pouch Type Secondary Battery And Manufacturing Method Thereof |
KR20210096023A (en) * | 2019-09-30 | 2021-08-04 | 에스케이이노베이션 주식회사 | Pouch Case, Pouch Type Secondary Battery And Manufacturing Method Thereof |
KR20210038230A (en) * | 2019-09-30 | 2021-04-07 | 에스케이이노베이션 주식회사 | Pouch Case, Pouch Type Secondary Battery And Manufacturing Method Thereof |
US11705595B2 (en) | 2019-09-30 | 2023-07-18 | Sk On Co., Ltd. | Pouch case, pouch type secondary battery and manufacturing method thereof |
US11171376B2 (en) * | 2019-09-30 | 2021-11-09 | Sk Innovation Co., Ltd. | Pouch case, pouch type secondary battery and manufacturing method thereof |
EP3836283A3 (en) * | 2019-09-30 | 2021-08-11 | SK Innovation Co., Ltd. | Pouch case, pouch type secondary battery and manufacturing method thereof |
KR102500267B1 (en) | 2019-09-30 | 2023-02-16 | 에스케이온 주식회사 | Pouch Case, Pouch Type Secondary Battery And Manufacturing Method Thereof |
WO2021111969A1 (en) | 2019-12-03 | 2021-06-10 | 株式会社エンビジョンAescジャパン | Battery, film production method, and battery production method |
CN114424387A (en) * | 2019-12-17 | 2022-04-29 | 株式会社Lg新能源 | Secondary battery case and secondary battery |
JP2022547561A (en) * | 2019-12-17 | 2022-11-14 | エルジー エナジー ソリューション リミテッド | Secondary battery case and secondary battery |
JP7362907B2 (en) | 2019-12-17 | 2023-10-17 | エルジー エナジー ソリューション リミテッド | Secondary battery case and secondary battery |
JP7483904B2 (en) | 2020-06-04 | 2024-05-15 | エルジー エナジー ソリューション リミテッド | Pouch forming device and forming method |
JP2023513775A (en) * | 2020-06-04 | 2023-04-03 | エルジー エナジー ソリューション リミテッド | Pouch forming apparatus and forming method |
WO2021261698A1 (en) * | 2020-06-26 | 2021-12-30 | 주식회사 엘지에너지솔루션 | Pouch, apparatus for molding pouch, and method for manufacturing secondary battery comprising pouch |
JP7537004B2 (en) | 2020-08-19 | 2024-08-20 | エルジー エナジー ソリューション リミテッド | Pouch-type secondary battery and battery module |
Also Published As
Publication number | Publication date |
---|---|
JP4140311B2 (en) | 2008-08-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4140311B2 (en) | Method for manufacturing case for power storage element | |
EP3800718B1 (en) | Secondary battery, device, and manufacturing method for secondary battery | |
JP5541514B2 (en) | Multilayer secondary battery | |
JP5484242B2 (en) | Secondary battery and manufacturing method thereof | |
JP4402134B2 (en) | Multilayer secondary battery and manufacturing method thereof | |
US20060008702A1 (en) | Secondary battery | |
JP7436116B2 (en) | Electrode tab bending device and method | |
TWI635641B (en) | Method for producing laminate battery, and laminate battery | |
JP2013187077A (en) | Wound type and stack type electrode battery | |
JP2020513148A (en) | Electrode having improved electrode tab welding characteristics and secondary battery including the same | |
JP2011049065A (en) | Nonaqueous electrolyte battery and method of manufacturing the same | |
JP2008269819A (en) | Nonaqueous electrolytic solution secondary battery | |
US11050103B2 (en) | Pouch cell and method of forming same | |
JP2010232164A (en) | Method of manufacturing square-shaped secondary battery | |
JP2011187338A (en) | Lithium ion secondary battery | |
EP3972044A1 (en) | Secondary battery and terminal for secondary battery and manufacturing method thereof | |
CN107851768A (en) | The manufacture method of electrochemical device | |
JP2013097931A (en) | Manufacturing method of electrochemical element of thin film type | |
JPWO2013031889A1 (en) | Method for manufacturing battery electrode | |
JP4603857B2 (en) | Lithium ion secondary battery and manufacturing method thereof | |
JP3240965B2 (en) | Enclosure bag for non-aqueous electrolyte battery and method of manufacturing the same | |
JP5678270B2 (en) | Power generation element and secondary battery | |
KR101154883B1 (en) | Method for Production of Electrode Assembly with Improved Electrolyte Wetting Property | |
JP2014082055A (en) | Cylindrical power storage element | |
JP2021128898A (en) | Power storage module |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20050330 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20080109 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20080311 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20080403 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20080520 |
|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20080602 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110620 Year of fee payment: 3 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110620 Year of fee payment: 3 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110620 Year of fee payment: 3 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120620 Year of fee payment: 4 |
|
LAPS | Cancellation because of no payment of annual fees |