Secondary battery comprising gas-absorbing polymer
US-2019252737-A1 · Aug 15, 2019 · US
Battery case having gas adsorption layer
US11581592B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11581592-B2 |
| Application number | US-201816622080-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 19, 2018 |
| Priority date | Jan 9, 2018 |
| Publication date | Feb 14, 2023 |
| Grant date | Feb 14, 2023 |
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- Title
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Abstract
Official abstract text for this publication.
Disclosed herein is a battery case configured to receive an electrode assembly and an electrolytic solution therein, the electrode assembly including a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode, the battery case including a layer structure and a gas adsorption layer formed on the inner surface of the layer structure, the gas adsorption layer including a gas adsorption material layer configured to adsorb a reaction gas that may be generated within the battery case during abnormal functioning of the electrode assembly, and a blocking layer formed on an exposed surface of the gas adsorption material layer, the blocking layer configured to prevent the gas adsorption material layer from being exposed to an ambient gas during assembly of the battery case.
First claim
Opening claim text (preview).
The invention claimed is: 1. A battery case configured to receive an electrode assembly and an electrolytic solution therein, the electrode assembly comprising a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode, the battery case comprising: a layer structure; and a gas adsorption layer formed on an inner surface of the layer structure, the gas adsorption layer comprising: a gas adsorption material layer configured to adsorb a reaction gas that may be generated within the battery case during abnormal functioning of the electrode assembly; and a blocking layer formed on an exposed surface of the gas adsorption material layer, the blocking layer configured to prevent the gas adsorption material layer from being exposed to an ambient gas during assembly of the battery case, the blocking layer being a film having a structure that does not transmit air to the gas adsorption material layer, the blocking layer covering all of the gas adsorption material layer during assembly of the battery case, wherein the blocking layer is configured to be dissolved by the electrolytic solution after assembly of the battery case, such that the gas adsorption material layer is exposed to the electrolytic solution, wherein the blocking layer consists of a polymer film selected from among polyamide, polyvinyl alcohol, polycarbonate and polyethylene vinyl acetate. 2. The battery case according to claim 1 , wherein, after assembly of the battery case, the electrolytic solution contacts the gas adsorption layer. 3. The battery case according to claim 1 , wherein the gas adsorption material layer comprises at least one gas adsorption material selected from a group consisting of organic compounds or metals. 4. The battery case according to claim 1 , wherein the layer structure comprises an outer coating layer and a metal layer disposed adjacent to the outer coating layer, the battery case further comprising an inner resin layer disposed adjacent to the metal layer, the layer structure and the inner resin layer together forming a laminate pouch. 5. The battery case according to claim 4 , wherein the inner resin layer has the gas adsorption material contained therein. 6. A battery cell comprising a battery case according to claim 1 . 7. The battery case according to claim 1 , wherein the layer structure comprises a can-shaped metal.
Assignees
Inventors
Classifications
Pouches or flexible bags · CPC title
with stationary adsorbents {(B01D53/025 takes precedence)} · CPC title
Metals · CPC title
- H01M10/52Primary
Removing gases inside the secondary cell, e.g. by absorption (vent plugs or other mechanical arrangements for facilitating escape of gases H01M50/30) · CPC title
characterised by the material · CPC title
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Frequently asked questions
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- What does patent US11581592B2 cover?
- Disclosed herein is a battery case configured to receive an electrode assembly and an electrolytic solution therein, the electrode assembly including a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode, the battery case including a layer structure and a gas adsorption layer formed on the inner surface of the layer stru…
- Who is the assignee on this patent?
- Lg Chemical Ltd, Lg Energy Solution Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M10/52. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Feb 14 2023 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).