Composite membrane for secondary battery, method of preparing the same, and secondary battery including the same
US-2019326631-A1 · Oct 24, 2019 · US
Current collector structure and secondary battery having the same
US2022231328A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2022231328-A1 |
| Application number | US-202217572527-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jan 10, 2022 |
| Priority date | Jan 15, 2021 |
| Publication date | Jul 21, 2022 |
| Grant date | — |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
To prevent the breakage of a bonding portion when current collector tabs are converged and bonded, and thereby maintain a current path. A plurality of electrode current collectors each including a metal porous body, a plurality of tabs each extending from an end of the metal porous body of each of the electrode current collectors, and a connecting tab lead that electrically connects the tabs, are included. The connecting tab lead is cross-bonded with each of the tabs to form a first compression bonding portion, and is further folded from a first of the tabs to a second of the tabs, for example, the connecting tab lead is arranged in a bellows shape. At a tab convergence location where the first compression bonding portions are stacked, the tabs are converged by forming a second compression bonding portion by ultrasonic waves or other means.
First claim
Opening claim text (preview).
What is claimed is: 1 . A current collector structure, comprising: a plurality of electrode current collectors each comprising a metal porous body; a plurality of tabs each extending from an end of the metal porous body of each of the electrode current collectors; and a connecting tab lead that electrically connects two or more of the tabs, the connecting tab lead comprising a metal porous body, the connecting tab lead and each of the tabs having a first compression bonding portion at an intersection where an extending direction of each of the tabs and a longitudinal direction of the connecting tab lead intersect each other, the connecting tab lead being arranged to be folded from the intersection with a first of the tabs and extend to the intersection with a second of the tabs, and the current collector structure having a second compression bonding portion at a tab convergence location where a plurality of the intersections are stacked. 2 . The current collector structure according to claim 1 , wherein the current collector structure is connected to a tab for external connection at the second compression bonding portion. 3 . A secondary battery having the current collector structure according to claim 1 , the secondary battery comprising: a positive electrode and/or a negative electrode each having an electrode material mixture filled region that is filled with an electrode material mixture and an electrode material mixture non-filled region that is not filled with the electrode material mixture, within the metal porous body of each of the electrode current collectors; and an electrolyte disposed between the positive electrode and the negative electrode, the electrode material mixture non-filled region of each of the electrode current collectors constituting one of the tabs. 4 . A connecting member, comprising: a plurality of electrode current collectors each comprising a metal porous body; a plurality of tabs each extending from an end of the metal porous body of each of the electrode current collectors; and a connecting tab lead that electrically connects two or more of the tabs, the connecting tab lead comprising a metal porous body, the connecting tab lead and each of the tabs having a first compression bonding portion at an intersection where an extending direction of each of the tabs and a longitudinal direction of the connecting tab lead intersect each other, and the connecting tab lead being arranged to be folded from the intersection with a first of the tabs and extend to the intersection with a second of the tabs.
Assignees
Inventors
Classifications
- H01M50/536Primary
characterised by the method of fixing the leads to the electrodes, e.g. by welding · CPC title
characterised by the material of the leads or tabs · CPC title
Porous plates, e.g. sintered carriers · CPC title
Porous or perforated metallic containers · CPC title
Meshes or woven material; Expanded metal · CPC title
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Frequently asked questions
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- What does patent US2022231328A1 cover?
- To prevent the breakage of a bonding portion when current collector tabs are converged and bonded, and thereby maintain a current path. A plurality of electrode current collectors each including a metal porous body, a plurality of tabs each extending from an end of the metal porous body of each of the electrode current collectors, and a connecting tab lead that electrically connects the tabs, a…
- Who is the assignee on this patent?
- Honda Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M50/536. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Jul 21 2022 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).