Method of manufacturing secondary battery and apparatus for the same
US-2018131029-A1 · May 10, 2018 · US
Method for manufacturing secondary battery
US12424715B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12424715-B2 |
| Application number | US-202217994990-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 28, 2022 |
| Priority date | Nov 30, 2021 |
| Publication date | Sep 23, 2025 |
| Grant date | Sep 23, 2025 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
Provided is a technology capable of improving the impregnation efficiency of an electrolyte into an electrode body. In accordance with a preferable one embodiment of a method for manufacturing a secondary battery herein disclosed, a method for manufacturing a secondary battery including an electrode body, an electrolyte, and a battery case is provided. The manufacturing method includes a solution introducing step of introducing the electrolyte into the battery case, and a pressure reducing step of reducing the pressure in the battery case after the solution introducing step. After an elapse of 10 hours or more after the solution introducing step, the pressure reducing step is carried out.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for manufacturing a secondary battery, the secondary battery comprising an electrode body comprising a positive electrode sheet, a negative electrode sheet, and a separator arranged between the positive electrode sheet and the negative electrode sheet, an electrolyte, and a battery case for accommodating the electrode body and the electrolyte, the method comprising a solution introducing step of introducing the electrolyte into the battery case, and a pressure reducing step of reducing a pressure in the battery case after the solution introducing step, wherein after an elapse of 10 hours or more after the solution introducing step, the pressure reducing step is carried out. 2. The manufacturing method according to claim 1 wherein the electrode body is a wound electrode body obtained by winding the positive electrode sheet in a band shape and the negative electrode sheet in a band shape via the separator in a band shape. 3. The manufacturing method according to claim 1 , wherein the positive electrode sheet comprises a positive electrode current collecting foil, and a positive electrode active material layer provided on the positive electrode current collecting foil, and a width of the positive electrode active material layer in a transverse direction of the positive electrode sheet is 20 cm or more. 4. The manufacturing method according to claim 1 , wherein adhesion layers are provided on both surfaces of the separator, and the adhesion layer bonds the positive electrode sheet and the separator, and bonds the negative electrode sheet and the separator. 5. The manufacturing method according to claim 1 , comprising, reducing a pressure in the battery case down to 5 kPa or less in terms of absolute pressure, before the solution introducing step. 6. The manufacturing method according to claim 1 , wherein at the pressure reducing step after the solution introducing step, an inside of the battery case is reduced in pressure down to 5 kPa to 50 kPa in terms of absolute pressure.
Assignees
Inventors
Classifications
Positive electrodes · CPC title
- H01M10/0587Primary
of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators · CPC title
Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof · CPC title
with adhesive layers between electrodes and separators · CPC title
Cells with wound or folded electrodes (H01M10/045 takes precedence) · CPC title
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Frequently asked questions
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- What does patent US12424715B2 cover?
- Provided is a technology capable of improving the impregnation efficiency of an electrolyte into an electrode body. In accordance with a preferable one embodiment of a method for manufacturing a secondary battery herein disclosed, a method for manufacturing a secondary battery including an electrode body, an electrolyte, and a battery case is provided. The manufacturing method includes a soluti…
- Who is the assignee on this patent?
- Prime Planet Energy & Solutions Inc
- What technology area does this patent fall under?
- Primary CPC classification H01M10/0587. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Sep 23 2025 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 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).