Method for manufacturing electricity storage device
US-2024429582-A1 · Dec 26, 2024 · US
Rectangular battery
US9455422B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9455422-B2 |
| Application number | US-201214235432-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 7, 2012 |
| Priority date | Aug 31, 2011 |
| Publication date | Sep 27, 2016 |
| Grant date | Sep 27, 2016 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
Disclosed is a rectangular battery in which an electrode group formed by winding a first electrode and a second electrode with a separator interposed therebetween is housed in a battery case having an opening sealed by a sealing plate. The first electrode is electrically connected to the sealing plate, and the second electrode is electrically connected to a current collector plate provided between the sealing plate and the electrode group and extending along a longer side direction of the sealing plate. The sealing plate has a lower-strength portion configured to be deformed prior to the other portions of the sealing plate to provide a contact between the sealing plate and the current collector plate when the sealing plate receives an external pressure along the longer side direction of the sealing plate.
First claim
Opening claim text (preview).
The invention claimed is: 1. A rectangular battery in which an electrode group formed by winding a first electrode and a second electrode with a separator interposed therebetween is housed in a battery case having an opening sealed by a sealing plate, wherein the first electrode is electrically connected to the sealing plate, the second electrode is electrically connected to a current collector plate provided between the sealing plate and the electrode group and extending along a longer side direction of the sealing plate, an insulating member is provided between the sealing plate and the current collector plate, the sealing plate has a thin portion which deforms prior to other portions of the sealing plate to provide a contact between the sealing plate and the current collector plate when the sealing plate receives an external pressure along the longer side direction of the sealing plate, when the sealing plate receives the external pressure along the longer side direction of the sealing plate, a strength of the thin portion varies along a shorter side direction of the sealing plate such that the sealing plate is bent around the thin portion toward a direction deviating from a center line extending along the longer side direction of the sealing plate, the thin portion is provided so as to overlap the current collector plate, the sealing plate has a groove recessed to a direction away from the current collector plate, the groove, at a position apart from the thin portion, extending from a center line extending along the longer side direction of the sealing plate toward one end in the shorter side direction of the sealing plate, the insulating member has a protruding portion protruding toward the groove, and fit in the groove, and the strength of the thin portion decreases from a center line extending along the longer side direction of the sealing plate toward at least one end in the shorter side direction of the sealing plate. 2. The rectangular battery of claim 1 , wherein the strength of the thin portion decreases from one end toward the other end in the shorter side direction of the sealing plate. 3. The rectangular battery of claim 1 , wherein a thickness of the thin portion varies from one end toward the other end in the shorter side direction of the sealing plate. 4. The rectangular battery of claim 1 , wherein a length of the thin portion in the longer side direction of the sealing plate varies from one end toward the other end in the shorter side direction of the sealing plate. 5. A rectangular battery in which an electrode group formed by winding a first electrode and a second electrode with a separator interposed therebetween is housed in a battery case having an opening sealed by a sealing plate, wherein the first electrode is electrically connected to the sealing plate, the second electrode is electrically connected to a current collector plate provided between the sealing plate and the electrode group and extending along a longer side direction of the sealing plate, an insulating member is provided between the sealing plate and the current collector plate, the sealing plate has a thin portion which deforms prior to other portions of the sealing plate to provide a contact between the sealing plate and the current collector plate when the sealing plate receives an external pressure along the longer side direction of the sealing plate, when the sealing plate receives the external pressure along the longer side direction of the sealing plate, a strength of the thin portion decreases from a center line extending along the longer side direction of the sealing plate toward at least one end in the shorter side direction of the sealing plate such that the sealing plate is bent around the thin portion toward a direction deviating from a center line extending along the longer side direction of the sealing plate, and the thin portion is provided so as to overlap the current collector plate.
Assignees
Inventors
Classifications
- H01M10/0431Primary
Cells with wound or folded electrodes (H01M10/045 takes precedence) · CPC title
Spacers; Insulating plates · CPC title
Metals · CPC title
characterised by the shape of the leads or tabs · CPC title
prismatic or rectangular (H01M50/109, H01M50/11 take precedence) · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9455422B2 cover?
- Disclosed is a rectangular battery in which an electrode group formed by winding a first electrode and a second electrode with a separator interposed therebetween is housed in a battery case having an opening sealed by a sealing plate. The first electrode is electrically connected to the sealing plate, and the second electrode is electrically connected to a current collector plate provided betw…
- Who is the assignee on this patent?
- Iwasaki Mizuo, Saruwatari Kenji, Watanabe Kazuhiko, and 3 more
- What technology area does this patent fall under?
- Primary CPC classification H01M10/0431. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Sep 27 2016 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).