Separator for secondary battery, manufacturing method thereof, method for manufacturing secondary battery comprising the separator and secondary battery manufactured by the method
US-12183949-B2 · Dec 31, 2024 · US
Stacked electrode assembly and power storage module
US2025329790A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2025329790-A1 |
| Application number | US-202519172651-A |
| Country | US |
| Kind code | A1 |
| Filing date | Apr 8, 2025 |
| Priority date | Apr 18, 2024 |
| Publication date | Oct 23, 2025 |
| Grant date | — |
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- Title
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Abstract
Official abstract text for this publication.
A stacked electrode assembly extends in a second direction perpendicular to a first direction which is a laminate direction of each of the electrodes and each of the separators. First and second surfaces of a metallic foil of the electrode each have an active-material coated area and an active-material uncoated area extending in the second direction. The active-material uncoated area of the second surface is located on the back of the active-material uncoated area of the first surface. The active-material uncoated area of the second surface has a first resin placement area in which a resin is disposed and which is located on the active-material coated area side of the second surface. Spaces are formed between the separator and end portions, in a third direction perpendicular to the first and second directions and on the first resin placement area side, of the active-material uncoated area of the second surface.
First claim
Opening claim text (preview).
What is claimed is: 1 . A stacked electrode assembly, comprising: a plurality of electrodes; and a plurality of separators, wherein each of the electrodes and each of the separators are alternately stacked in a first direction, the stacked electrode assembly extends in a second direction perpendicular to the first direction, the electrode includes a metallic foil having a first surface and a second surface which is a backside of the first surface, the first surface and the second surface each have an active-material coated area extending in the second direction and coated with an active material and an active-material uncoated area continuing to the active-material coated area in the second direction and not coated with the active material, the active-material uncoated area of the second surface: is located on back of the active-material uncoated area of the first surface of the metallic foil; and has a first resin placement area in which a resin is disposed and which is located on an active-material coated area side of the second surface, wherein a first space is formed between the separator and an end portion, in a third direction perpendicular to the first direction and the second direction and on a first resin placement area side, of the active-material uncoated area of the second surface. 2 . The stacked electrode assembly according to claim 1 , wherein the resin is in contact with the separator, and a length of the first resin placement area in the third direction is shorter than a length of the metallic foil in the third direction. 3 . The stacked electrode assembly according to claim 1 , wherein a resin spacer is disposed between the resin and the separator. 4 . The stacked electrode assembly according to claim 1 , wherein the active-material uncoated area of the first surface has a second resin placement area in which a resin is disposed and which is located on an active-material coated area side of the first surface, and a second space is formed between the separator and an end portion, in the third direction and on a second resin placement area side, of the active-material uncoated area of the first surface. 5 . A power storage module, comprising: the stacked electrode assembly according to claim 1 ; and a housing accommodating the stacked electrode assembly.
Assignees
Inventors
Classifications
characterised by the disposition of the sealing members · CPC title
prismatic or rectangular (H01M50/109, H01M50/11 take precedence) · CPC title
- H01M50/46Primary
Separators, membranes or diaphragms characterised by their combination with electrodes · CPC title
Energy storage using batteries · CPC title
Li-accumulators · CPC title
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Frequently asked questions
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- What does patent US2025329790A1 cover?
- A stacked electrode assembly extends in a second direction perpendicular to a first direction which is a laminate direction of each of the electrodes and each of the separators. First and second surfaces of a metallic foil of the electrode each have an active-material coated area and an active-material uncoated area extending in the second direction. The active-material uncoated area of the sec…
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M50/46. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Oct 23 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).