Unlock instant, AI-driven research and patent intelligence for your innovation.

Method and apparatus for welding

A welding method and scanning direction technology, which is applied in the field of welding and welding devices, can solve problems such as easy cracks, and achieve the effects of stable melting width, high-quality welding, and low cost

Inactive Publication Date: 2015-07-15
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition, if Figure 25 As shown, cracks are likely to occur in areas with a large curvature such as the corner portion 51a.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and apparatus for welding
  • Method and apparatus for welding
  • Method and apparatus for welding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0056] Next, Embodiment 1 according to the present invention will be described with reference to the drawings.

[0057] figure 1 It is a figure which shows the welding method in this embodiment.

[0058] Such as figure 1 As shown, in the welding method of this embodiment, the member 102 and the member 103 are overlapped. A laser beam 101 is irradiated onto the surface of a member 102 . The surface of the component 102 is scanned with the laser beam 101 in the direction of the arrow. At the same time, a small hole 105 is formed in the members 102 and 103 immediately below the portion irradiated with the laser beam 101 (hereinafter referred to as an irradiation spot). Around the small hole 105, there is formed a melting portion 104 where the members 102, 103 are in a molten state. Thereby, the members 102 , 103 are welded by the laser beam 101 .

[0059] Hereinafter, the spot intensity refers to the beam intensity at the irradiation point. The "spot diameter" refers to ...

Embodiment 1

[0070] Next, an example (hereinafter referred to as example 1) in this embodiment will be described.

[0071] In this embodiment, the member 102 is a metal plate formed of nickel and having a plate thickness of 0.2 mm. The member 103 is a metal plate made of copper and having a plate thickness of 0.5 mm. The spot diameter of the beam portion 101a is 0.4 mm. The spot diameter of the beam portion 101b is 0.05 mm. The spot intensity of the beam portion 101a is 300W. The spot intensity of the beam portion 101b is 600W. The spot center of the beam portion 101b was shifted from the spot center of the laser beam 101 toward the rear in the scanning direction by 0.05 mm. The laser beam 101 is continuously irradiated onto the surface of the member 102 . The surface of the member 102 is scanned with the laser beam 101 at a scanning speed of 100 mm / sec.

[0072] In this embodiment, based on these conditions, the members 102, 103 were overlap-welded with the laser beam 101. FIG.

[...

Embodiment approach 2

[0089] Next, Embodiment 2 according to the present invention will be described with reference to the drawings. In addition, the same reference numerals are assigned to the same constituent elements as those in Embodiment 1, and description thereof will be omitted.

[0090] Figure 5 It is a figure which shows the welding method in this embodiment.

[0091] Such as Figure 5 As shown, in the welding method of this embodiment, the end of the member 102 is butted against the end of the member 103 . The laser beam 201 is irradiated to the mating portions of the members 102, 103 so that the beam portions 201b, 201c are respectively arranged on the members 102, 103 so as to sandwich the mating surfaces. The abutting portion of the components 102, 103 is scanned with the laser beam 201 in the direction of the arrow so that the beam portion 201b, 201c does not intersect the abutting surface. Thereby, the members 102 and 103 are welded by the laser beam 201 .

[0092] Figure 6A , ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a welding method and a welding apparatus for manufacturing an energy device (enclosed charging battery, double electric layer capacitor, etc.) of large capacity, high reliability, and low cost by carrying out the welding between a housing and a sealing board in high quality and in a stable manner. The welding apparatus utilizes a laser beam (101) to scan the welding object of the construction members (102, 103) for welding, and the light spots of the light beam (101b) swing relative to the scanning direction of the welding objects. The laser beam (101) is the light beam having light beam parts (101a, 101b). The light beam part (101a) is the part having a first power density. The light beam part (101b) is located inside the light beam part (101a) and provided with a second power density higher than that of the first power density.

Description

technical field [0001] The present invention relates to a welding method and a welding device for welding two members with a laser beam, and particularly relates to a low-cost welding method even if there are gaps, curved parts, double scanning parts, etc. in the scanning path of the parts to be welded of two members. , high-quality, and stable welding welding method and welding device. Background technique [0002] In recent years, sealed rechargeable batteries have been widely used as power sources for driving portable devices and the like. In addition, electric double layer capacitors are widely used in backup power supplies of electronic equipment and the like. Furthermore, sealed rechargeable batteries and electric double layer capacitors are attracting attention as power sources for hybrid vehicles and electric vehicles. Demands for large capacity, high reliability, low cost, etc. of sealed rechargeable batteries and electric double layer capacitors are increasing. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/21B23K26/082B23K26/064B23K26/00
Inventor 熊泽诚二中井出田代功宇津吕英俊
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD