发明名称 |
Electric storage device |
摘要 |
<p>An object is to provide an electric storage device capable of preventing an inner-circumferential end portion of a negative electrode and an inner-circumferential end portion of a positive electrode from moving in the space at the winding center of an electrode assembly. An electric storage device includes an electrode assembly, in which a positive electrode and a negative electrode in the shape of a sheet are wound with a separator sandwiched therebetween. The electrode assembly has a flat shape and includes a first flat portion and a second flat portion, which are opposed to each other, and a first curved portion and a second curved portion which connect end portions of the first and second flat portions together. One of the positive electrode and the negative electrode covers an inner-circumferential end portion of the other electrode and is disposed on an innermost circumference of the electrode assembly. An inner-circumferential end portion of the one of the electrodes causes an elastic force to act outwardly on the other electrode.</p> |
申请公布号 |
EP2709126(A1) |
申请公布日期 |
2014.03.19 |
申请号 |
EP20130184119 |
申请日期 |
2013.09.12 |
申请人 |
GS YUASA INTERNATIONAL LTD. |
发明人 |
NITTA, KAZUSHI;IGUCHI, TAKAAKI |
分类号 |
H01G4/32;H01G9/15;H01G11/66;H01G11/84;H01G13/02;H01M10/04;H01M10/0587 |
主分类号 |
H01G4/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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