Sealed cell and method for manufacturing same
US-2020259133-A1 · Aug 13, 2020 · US
Laser processing method and laser processing device and sealed type battery
US12179285B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12179285-B2 |
| Application number | US-202117367276-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 2, 2021 |
| Priority date | Aug 6, 2020 |
| Publication date | Dec 31, 2024 |
| Grant date | Dec 31, 2024 |
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- Title
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Abstract
Official abstract text for this publication.
Provided is a laser processing method including overlapping a plurality of plate-shaped members that include a first plate-shaped member disposed on one end side of an overlapping direction and a second plate-shaped member disposed on the other end side of the overlapping direction; branching a laser beam into a first branched laser beam and a second branched laser beam; irradiating the first plate-shaped member with the first branched laser beam and the second branched laser beam in a state where the first branched laser beam and the second branched laser beam are emitted in parallel; forming line-shaped melting portions on the first plate-shaped member by moving the branched laser beams in a direction intersecting a direction in which the branched laser beams are aligned; and joining overlapped plate-shaped members in a state where the melting portion formed by using the first branched laser beam and the melting portion formed by using the second branched laser beam are connected to each other in the second plate-shaped member and the melting portions do not penetrate the second plate-shaped member.
First claim
Opening claim text (preview).
What is claimed is: 1. A laser processing method comprising: overlapping a plurality of plate-shaped members that include a first plate-shaped member disposed on one end side of an overlapping direction and a second plate-shaped member disposed on the other end side of the overlapping direction; branching a laser beam into a plurality of branched laser beams that include a plurality of pairs of a first branched laser beam and a second branched laser beam; irradiating the first plate-shaped member with the plurality of branched laser beams in a state where the plurality of branched laser beams are emitted in parallel; forming line-shaped melting portions along a surface of the first plate-shaped member by relatively moving the first branched laser beam and the second branched laser beam with respect to the first plate-shaped member in a direction intersecting a direction in which the first branched laser beam and the second branched laser beam are aligned; and joining each of the overlapped plate-shaped members with the line-shaped melting portions in a state where the melting portion formed by using the first branched laser beam and the melting portion formed by using the second branched laser beam are connected to each other in the second plate-shaped member and the melting portions do not penetrate the second plate-shaped member, wherein in the first plate-shaped member, a gap between one pair of branched laser beams and another one pair of branched laser beams, which is adjacent to the one pair of branched laser beams, is larger than a gap between the first branched laser beam and the second branched laser beam. 2. The laser processing method of claim 1 , further comprising: irradiating the first plate-shaped member with the branched laser beams such that the melting portions, which are formed by using the branched laser beams, are point-symmetrical or line-symmetrical with each other with respect to a center position on the surface of the first plate-shaped member. 3. The laser processing method of claim 1 , wherein the second plate-shaped member is made of a copper-based material that reduces absorption of the laser beam.
Assignees
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Classifications
taking account of the properties of the material involved · CPC title
- B23K26/067Primary
Dividing the beam into multiple beams, e.g. multi-focusing · CPC title
into dependently operating sub-beams, e.g. an array of spots with fixed spatial relationship or for performing simultaneously identical operations · CPC title
comprising prisms · CPC title
Devices involving movement of the workpiece in at least one axial direction · CPC title
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- What does patent US12179285B2 cover?
- Provided is a laser processing method including overlapping a plurality of plate-shaped members that include a first plate-shaped member disposed on one end side of an overlapping direction and a second plate-shaped member disposed on the other end side of the overlapping direction; branching a laser beam into a first branched laser beam and a second branched laser beam; irradiating the first p…
- Who is the assignee on this patent?
- Panasonic Ip Man Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification B23K26/067. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Dec 31 2024 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).