Button cells and method of producing same
US-2015372339-A1 · Dec 24, 2015 · US
Flat-shaped battery and method for manufacturing same
US12531318B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12531318-B2 |
| Application number | US-202117915654-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 23, 2021 |
| Priority date | Mar 30, 2020 |
| Publication date | Jan 20, 2026 |
| Grant date | Jan 20, 2026 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
The flat-shaped battery of the present invention comprises a battery container provided with an outer can and a sealing plate, and a positive electrode, a negative electrode, a separator, and an electrolyte solution are enclosed in the battery container. The positive electrode is housed in the outer can, and a porous electrolyte solution absorber is inserted between the positive electrode and an inner bottom surface of the outer can. Also, the method for manufacturing a flat-shaped battery, including: disposing an electrolyte solution absorber on an inner bottom surface of the outer can; disposing the positive electrode on the electrolyte solution absorber; and injecting the electrolyte solution into the outer can after disposing the electrolyte solution absorber, before or after disposing the positive electrode. A porous body having a porosity of 40 to 90% is used as the electrolyte solution absorber.
First claim
Opening claim text (preview).
The invention claimed is: 1 . A flat-shaped battery comprising a battery container provided with an outer can and a sealing plate, and a positive electrode, a negative electrode, a separator, and an electrolyte solution are enclosed in the battery container, wherein the positive electrode is housed in the outer can, and a porous electrolyte solution absorber is inserted between the positive electrode and an inner bottom surface of the outer can, and wherein the electrolyte solution absorber is a porous carbon sheet or is made of a resin. 2 . The flat-shaped battery according to claim 1 , wherein an area of the electrolyte solution absorber as viewed in a plan view is 50% or more of an area of the inner bottom surface of the outer can. 3 . The flat-shaped battery according to claim 1 , wherein the electrolyte solution absorber has a thickness of 30 μm or more. 4 . The flat-shaped battery according to claim 1 , wherein the electrolyte solution is an aqueous electrolyte solution. 5 . The flat-shaped battery according to claim 4 , wherein the electrolyte solution absorber is subjected to hydrophilization processing. 6 . The flat-shaped battery according to claim 1 , wherein the porous carbon sheet is made of fibrous carbon. 7 . The flat-shaped battery according to claim 1 , wherein the electrolyte solution absorber is nonwoven fabric made of a resin. 8 . The flat-shaped battery according to claim 1 , wherein the positive electrode and a side wall of the outer can are electrically connected to each other. 9 . The flat-shaped battery according to claim 8 , wherein the positive electrode is in contact with an inner surface of the side wall of the outer can.
Assignees
Inventors
Classifications
Processes for forming or storing electrodes in the battery container · CPC title
Small-sized flat cells or batteries for portable equipment (H01M10/283 and H01M10/286 take precedence) · CPC title
Liquid materials, e.g. for Li-SOCl2 cells · CPC title
Arrangements or processes for filling with liquid, e.g. electrolytes · CPC title
characterised by their shape or structure · CPC title
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Frequently asked questions
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- What does patent US12531318B2 cover?
- The flat-shaped battery of the present invention comprises a battery container provided with an outer can and a sealing plate, and a positive electrode, a negative electrode, a separator, and an electrolyte solution are enclosed in the battery container. The positive electrode is housed in the outer can, and a porous electrolyte solution absorber is inserted between the positive electrode and a…
- Who is the assignee on this patent?
- Maxell Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M50/109. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jan 20 2026 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).