Sealed battery
US-2015364734-A1 · Dec 17, 2015 · US
Cylindrical batteries
US10403872B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10403872-B2 |
| Application number | US-201615559896-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 10, 2016 |
| Priority date | Mar 27, 2015 |
| Publication date | Sep 3, 2019 |
| Grant date | Sep 3, 2019 |
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- Title
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- Abstract
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- Assignees and inventors
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- First independent claim
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Abstract
Official abstract text for this publication.
A cylindrical battery having a sealing unit which includes at least a valve member, a metal plate disposed farther inside the battery than the valve member and having a joint portion connected to the valve member, and an annular insulating member disposed between an outer peripheral portion of the valve member and an outer peripheral portion of the metal plate. The metal plate has a groove-shaped thin portion disposed around the joint portion, and straight portions that have different angles to the normal to the metal plate are disposed on an inner peripheral side and an outer peripheral side of a cross section of the thin portion perpendicular to the longitudinal direction.
First claim
Opening claim text (preview).
The invention claimed is: 1. A cylindrical battery comprising an electrode assembly including a positive electrode plate and a negative electrode plate wound together via a separator, an electrolytic solution, a bottomed cylindrical housing can, and a sealing unit fixed by crimping of an open end of the housing can via a gasket, the sealing unit including at least a valve member, a metal plate disposed farther inside the battery than the valve member and having a joint portion connected to the valve member, and an annular insulating member disposed between an outer peripheral portion of the valve member and an outer peripheral portion of the metal plate, the metal plate having a groove-shaped thin portion disposed around the joint portion, the metal plate having a first straight portion and a second straight portion disposed on an inner peripheral side and an outer peripheral side, respectively, of a cross section of the thin portion perpendicular to the longitudinal direction, the first straight portion and the second straight portion being continuous to the surface of the metal plate, the metal plate having angles α and β different from each other wherein α is the angle of the first straight portion relative to a normal to the metal plate and β is the angle of the second straight portion relative to the normal. 2. The cylindrical battery according to claim 1 , wherein α and β satisfy 10°≤|α−β| and 10°≤α+β≤120°. 3. The cylindrical battery according to claim 1 , wherein the thinnest part of the thin portion is the point of inflection of a curve interposed between the first straight portion and the second straight portion. 4. The cylindrical battery according to claim 1 , wherein the thinnest part of the thin portion is the point of intersection of the first straight portion and the second straight portion. 5. The cylindrical battery according to claim 1 , wherein the planar shape of the thin portion is annular. 6. The cylindrical battery according to claim 1 , wherein the valve member is disposed outermost in the sealing unit.
Assignees
Inventors
Classifications
Inorganic material · CPC title
characterised by their shape or structure · CPC title
characterised by the disposition of the sealing members · CPC title
Pressure-sensitive devices · CPC title
Cells with wound or folded electrodes (H01M10/045 takes precedence) · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US10403872B2 cover?
- A cylindrical battery having a sealing unit which includes at least a valve member, a metal plate disposed farther inside the battery than the valve member and having a joint portion connected to the valve member, and an annular insulating member disposed between an outer peripheral portion of the valve member and an outer peripheral portion of the metal plate. The metal plate has a groove-shap…
- 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 Sep 03 2019 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).