Process isolation diaphragm assembly for metal process seal
US-2015377733-A1 · Dec 31, 2015 · US
Secondary battery and method for manufacturing the same
US9705111B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9705111-B2 |
| Application number | US-201514692182-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 21, 2015 |
| Priority date | Jun 2, 2014 |
| Publication date | Jul 11, 2017 |
| Grant date | Jul 11, 2017 |
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- Title
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Abstract
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Provided is a secondary battery in which a battery lid is fixed to a battery case by inserting the battery lid into an opening of the battery case having the opening, and emitting laser beams to a butting portion between the battery case and the battery lid to perform butt welding, wherein, when a battery lid-side welding mark formed in the battery lid has a distance from a surface of the battery lid to a lower end of the battery lid-side welding mark which is defined as a battery lid-side welding depth, and a battery case-side welding mark formed in the battery case has a distance from the surface of the battery lid to a lower end of the battery case-side welding mark which is defined as a battery case-side welding depth, the battery lid-side welding depth is deeper than the battery case-side welding depth.
First claim
Opening claim text (preview).
What is claimed is: 1. A secondary battery in which a battery lid is fixed to a battery case by inserting said battery lid into an opening of said battery case having said opening, and emitting laser beams to a butting portion between said battery case and said battery lid to perform butt welding, wherein when a battery lid-side welding mark formed in said battery lid has a distance from a surface of said battery lid to a lowest end of said battery lid-side welding mark which is defined as a battery lid-side welding depth, and a battery case-side welding mark formed in said battery case has a distance from the surface of said battery lid to a lowest end of said battery case-side welding mark which is defined as a battery case-side welding depth, said battery lid-side welding depth is deeper than said battery case-side welding depth, and a ratio between said battery case-side welding depth and said battery lid-side welding depth has a value of 65% to 85%. 2. The secondary battery according to claim 1 , having a penetration region between said battery lid-side welding mark and said battery case-side welding mark, wherein a distance from the surface of said battery lid to a lowest end of the penetration region has a depth shallower than said battery lid-side welding depth and said battery case-side welding depth. 3. The secondary battery according to claim 1 , wherein a heat capacity of the battery lid is larger than a heat capacity of the battery case.
Assignees
Inventors
Classifications
- B23K26/20Primary
Bonding (soldering by means of radiant energy B23K1/005) · CPC title
Electric or electronic devices · CPC title
Batteries in motive systems, e.g. vehicle, ship, plane · CPC title
Seam welding · CPC title
Aluminium or alloys thereof · CPC title
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- What does patent US9705111B2 cover?
- Provided is a secondary battery in which a battery lid is fixed to a battery case by inserting the battery lid into an opening of the battery case having the opening, and emitting laser beams to a butting portion between the battery case and the battery lid to perform butt welding, wherein, when a battery lid-side welding mark formed in the battery lid has a distance from a surface of the batte…
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification B23K26/20. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Jul 11 2017 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).