Cylindrical sealed battery and battery pack
US-2017133645-A1 · May 11, 2017 · US
Cylindrical battery
US11069916B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11069916-B2 |
| Application number | US-201716086498-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 14, 2017 |
| Priority date | Mar 25, 2016 |
| Publication date | Jul 20, 2021 |
| Grant date | Jul 20, 2021 |
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- Title
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- Abstract
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- Assignees and inventors
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- Key dates
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- First independent claim
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- CPC / IPC classifications
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Abstract
Official abstract text for this publication.
A cylindrical battery according to an embodiment of the present invention includes an electrode body, an electrolyte solution, a tubular exterior can that has a bottom and that accommodates the electrode body and the electrolyte solution, and a sealing body that seals the exterior can. The sealing body includes a valve member, an insulating plate that includes a hollow portion, and a metal plate that has a first through-hole. The insulating plate is disposed between the valve member and the metal plate. At least one of the valve member and the metal plate includes a projection that projects toward an inside of the hollow portion. The valve member and the metal plate are joined to each other at the projection. The insulating plate has a second through-hole that is formed around the hollow portion.
First claim
Opening claim text (preview).
The invention claimed is: 1. A cylindrical battery comprising: an electrode body; an electrolyte solution; a tubular exterior can that has a bottom and that accommodates the electrode body and the electrolyte solution; and a sealing body that seals the exterior can, wherein the sealing body includes a valve member, an insulating plate that includes a hollow portion, and a metal plate that has a first through-hole, wherein the insulating plate is disposed between the valve member and the metal plate, wherein at least one of the valve member and the metal plate includes a projection that projects toward an inside of the hollow portion, wherein the valve member and the metal plate are joined to each other at the projection, wherein the insulating plate has a second through-hole that is formed around the hollow portion, wherein the hollow portion is located in the center of the insulating plate, and wherein the second through-hole is located between the hollow portion and the outer edge of the insulating plate. 2. The cylindrical battery according to claim 1 further comprising: an overlapping portion at which at least a part of the second through-hole overlaps the first through-hole when viewed from a direction perpendicular to the metal plate. 3. The cylindrical battery according to claim 2 , wherein a ratio of a total area of the overlapping portion to a total area of the first through-hole is no less than 0.5 and no more than 1. 4. The cylindrical battery according to claim 1 , wherein the valve member is exposed to an outside of the battery. 5. The cylindrical battery according to claim 1 , wherein the sealing body includes a terminal cap that is disposed on the valve member.
Assignees
Inventors
Classifications
characterised by the disposition of the sealing members · CPC title
by crimping · CPC title
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title
in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member · CPC title
Manufacturing or production processes characterised by the final manufactured product · CPC title
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Frequently asked questions
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- What does patent US11069916B2 cover?
- A cylindrical battery according to an embodiment of the present invention includes an electrode body, an electrolyte solution, a tubular exterior can that has a bottom and that accommodates the electrode body and the electrolyte solution, and a sealing body that seals the exterior can. The sealing body includes a valve member, an insulating plate that includes a hollow portion, and a metal plat…
- Who is the assignee on this patent?
- Sanyo Electric Co
- What technology area does this patent fall under?
- Primary CPC classification H01M10/0422. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jul 20 2021 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).