Method for manufacturing electricity storage device
US-2024429582-A1 · Dec 26, 2024 · US
Rechargeable battery with larger curved ends having different radius of curvature
US8999543B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8999543-B2 |
| Application number | US-87403710-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 1, 2010 |
| Priority date | Sep 21, 2009 |
| Publication date | Apr 7, 2015 |
| Grant date | Apr 7, 2015 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
The present invention relates to a rechargeable battery that can use a negative electrode active material having a high volume expansion rate by receiving volume variation of an electrode assembly in a case. The rechargeable battery according to the present invention includes i) an electrode assembly including a positive electrode plate, a negative electrode plate, and a separator that are wound in a jelly roll shape to have a flat portion and curved portions disposed at both sides of the flat portion, ii) a case for receiving the electrode assembly, and iii) a cap assembly combined with the case to close and seal the case and that is electrically connected to the electrode assembly. When a direction that is perpendicular to a surface of the separator disposed in the flat portion is set to a first direction, the thickness of the flat portion measured along the first direction is smaller than the maximum thickness of the curved portion measured along the first direction.
First claim
Opening claim text (preview).
What is claimed is: 1. A rechargeable battery comprising: an electrode assembly having a positive electrode plate and a negative electrode plate and a separator interposed therebetween, wherein the electrode assembly is wound so as to define a first cross-sectional shape having two curved portions at lateral ends of the electrode assembly and a flat portion interposed between the two curved portions wherein the flat portion has a thickness dimension that is less than the thickness…
Assignees
Inventors
Classifications
- H01M10/0431Primary
Electricity · mapped topic
Cross-Sectional Technologies · mapped topic
Cross-Sectional Technologies · mapped topic
Electricity · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US8999543B2 cover?
- The present invention relates to a rechargeable battery that can use a negative electrode active material having a high volume expansion rate by receiving volume variation of an electrode assembly in a case. The rechargeable battery according to the present invention includes i) an electrode assembly including a positive electrode plate, a negative electrode plate, and a separator that are woun…
- Who is the assignee on this patent?
- Cho Eun-Bee, Samsung Sdi Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M10/0431. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Apr 07 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).