JPWO2016208238A1 - 電気化学デバイスの製造方法 - Google Patents
電気化学デバイスの製造方法 Download PDFInfo
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Abstract
Description
[二次電池の構成]
図1a,1bは、本発明の製造方法によって製造される電気化学デバイスの一例である積層型のリチウムイオン二次電池の構成の一例を模式的に示している。図1aは二次電池の主面(扁平な面)に対して垂直上方から見た平面図である。図1bは図1aのA−A線断面図である。図2は正極の要部の拡大断面図である。
二次電池の製造にあたって、まず二次電池用の電極2,3を製造する。具体的には、図2に示すように、正極集電体9の両面に正極活物質層10をそれぞれ形成する。未塗布部との境界部分における塗布部(正極活物質層10)の端部は、正極集電体9に対して実質的に垂直に切り立っていてもよく、また、正極活物質層10の中央部と比べて厚さの異なる端部を有していてもよい。また、図3に示すように、負極集電体11の両面に負極活物質層12をそれぞれ形成する。負極活物質層12の端部(塗布部の端部)は、負極集電体11に対して実質的に垂直に切り立っていてもよく、また、負極活物質層12の中央部と比べて厚さの異なる端部を有していてもよい。このようにして形成された正極2と負極3とを、セパレータ4を介して交互に積層し、正極端子7および負極端子8を接続する。
2 正極(正極シート)
3 負極(負極シート)
4 セパレータ
5 電解液
6 可撓性フィルム
7 正極端子(電極端子)
7a,13a 浮き上がった部分
8 負極端子(電極端子)
9 正極用の集電体(正極集電体)
10 正極用の活物質層(正極活物質層)
11 負極用の集電体(負極集電体)
12 負極用の活物質層(負極活物質層)
13 金属片(サポートタブ)
14 絶縁テープ
15 ホーン
16 押圧部材
17 蓄電要素(電極集合体)
18 封止材(シーラント)
19 アンビル
Claims (6)
- 2種類の電極がセパレータを介して重なり合う電極集合体が外装容器内に収容されており、前記2種類の電極はいずれも、集電体上に活物質層が形成された塗布部と、前記活物質層が形成されていない未塗布部とを有する、電気化学デバイスの製造方法であって、
前記2種類の電極を種類ごとにそれぞれ重ねてなる前記未塗布部の集合部と電極端子とを重ね合わせて接合する工程と、
前記接合する工程の後に、前記未塗布部の集合部と前記電極端子との接合部をプレスする工程と、
前記プレスする工程の後に、前記電極集合体を、可撓性フィルムからなる外装容器に収容する工程と、
を含む電気化学デバイスの製造方法。 - 前記接合する工程では、前記未塗布部の集合部の一面に前記電極端子を、他面に金属片をそれぞれ配し、前記未塗布部の集合部と一緒に重ね合わせて接合し、前記プレスする工程では、前記未塗布部の集合部を挟んでいる前記電極端子と前記金属片とをそれぞれ押圧する、請求項1に記載の電気化学デバイス用の電極の製造方法。
- 前記プレスする工程では、押圧部材によって前記金属片の少なくともエッジ部分を押圧する、請求項2に記載の電気化学デバイスの製造方法。
- 前記プレスする工程の後に、前記金属片の上に絶縁テープを貼り付ける工程をさらに含む、請求項2または3に記載の電気化学デバイスの製造方法。
- 前記接合する工程では超音波溶接を行う、請求項1から4のいずれか1項に記載の電気化学デバイスの製造方法。
- 前記電気化学デバイスは二次電池である、請求項1から5のいずれか1項に記載の電気化学デバイスの製造方法。
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US11830672B2 (en) | 2016-11-23 | 2023-11-28 | KYOCERA AVX Components Corporation | Ultracapacitor for use in a solder reflow process |
JP6928738B2 (ja) * | 2017-02-22 | 2021-09-01 | 株式会社エンビジョンAescジャパン | リチウムイオン電池 |
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