Supercharge Your Innovation With Domain-Expert AI Agents!

Tab laser welding method

A laser welding and lug technology, applied in welding equipment, metal processing equipment, manufacturing tools, etc., can solve problems such as droplet splashing, poor battery K value, short circuit of the battery cell, etc., to avoid droplet splashing, welding surface Smooth and flat without spatter particles, the effect of weld sealing

Inactive Publication Date: 2021-09-24
HUIZHOU LIWINON NEW ENERGY TECH CO LTD
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Now the laser welding process has become more and more mature, but there is still a relatively difficult process that restricts the promotion of the process. The difficulty of the process is the splash of molten droplets. The spattered particles are the welding material aluminum. If the spattered metal aluminum on the surface of the pole piece is not removed in time , Severe residue will lead to the safety risk of short circuit of the battery cell, and slight residue will also lead to poor K value of the battery cell

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
  • Tab laser welding method
  • Tab laser welding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A tab laser welding method, comprising the following steps:

[0047] Step (A): unwinding the tab piece 1;

[0048] Step (B): placing the unrolled tab piece 1 on the base;

[0049] Step (C): Place the tab piece 1 on one surface of the foil material 2 to be welded and stick it closely, and the overlapping area of ​​the tab piece 1 and the foil material 2 to be welded is recorded as the welding area;

[0050] Step (D): using a sealant 3 to seal and bond the contact edges of the tab 1 and the foil 2 to be welded to form a weldment;

[0051]Step (E): The weldment is flipped horizontally in situ, and a laser is used to perform laser welding on the welding area of ​​the weldment.

[0052] The flow chart of the current technology laser welding, before welding, the tabs and the foil are placed overlappingly, but because the tabs or the foil are not flat, there will be a gap between the two. When welding, the laser is directed to the welding area for laser heating, and the blac...

Embodiment 2

[0063] A tab laser welding method, comprising the following steps:

[0064] Step (A): unwinding the tab piece 1;

[0065] Step (B): placing the unrolled tab piece 1 on the base;

[0066] Step (C): Place the tab piece 1 on one surface of the foil material 2 to be welded and stick it closely, and the overlapping area of ​​the tab piece 1 and the foil material 2 to be welded is recorded as the welding area;

[0067] Step (D): using a sealant 3 to seal and bond the contact edges of the tab 1 and the foil 2 to be welded to form a weldment;

[0068] Step (E): The weldment is flipped horizontally in situ, and a laser is used to perform laser welding on the welding area of ​​the weldment.

[0069] Wherein, there is a step (d1) between the step (D) and the step (E): using a detection device to detect the sealant 3 attached to the surface of the weldment.

[0070] Wherein, the detection device is an industrial camera.

[0071] Wherein, the material of the foil material is copper foi...

Embodiment 3

[0079] A tab laser welding method, comprising the following steps:

[0080] Step (A): unwinding the tab piece 1;

[0081] Step (B): placing the unrolled tab piece 1 on the base;

[0082] Step (C): Place the tab piece 1 on one surface of the foil material 2 to be welded and stick it closely, and the overlapping area of ​​the tab piece 1 and the foil material 2 to be welded is recorded as the welding area;

[0083] Step (D): using the sealant 3 to seal the contact edge of the tab piece 1 and the foil to form a weldment;

[0084] Step (E): The weldment is flipped horizontally in situ, and a laser is used to perform laser welding on the welding area of ​​the weldment.

[0085] Wherein, there is a step (d1) between the step (D) and the step (E): using a detection device to detect the sealant 3 attached to the surface of the weldment.

[0086] Wherein, the detection device is an industrial camera.

[0087] Wherein, the material of the foil material is tin foil, and the thickness...

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
diameteraaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of welding, and particularly relates to a tab laser welding method. The method comprises the following steps of (A) unwinding a tab piece; (B), placing the unwound tab piece on a base; (C) placing the tab piece on one surface of a to-be-welded foil material and tightly attaching the tab to the surface of the to-be-welded foil material, and marking the overlapping area of the tab piece and the to-be-welded foil material as a welding area; (D) sealing and attaching the contact edges of the tab piece and the foil material by using a sealant to form a weldment; and (E) horizontally overturning the weldment in situ, and carrying out laser welding on the welding area of the weldment by using laser. According to the tab laser welding method, molten drop splashing can be solved, a welding seam is sealed, and a welding surface is smooth and flat and free of splashing particles.

Description

technical field [0001] The invention belongs to the field of welding technology, in particular to a tab laser welding method. Background technique [0002] In the lithium battery manufacturing process, tab welding is an essential and very important process. At present, ultrasonic welding has been used on a large scale, and the laser welding process is also being developed by various lithium battery companies. Compared with ultrasonic welding, laser welding has the following advantages: [0003] a) Short changeover time: no need for welding head and welding seat, only need to change the laser parameters, which greatly shortens the time for frequent replacement of welding head and welding seat in ultrasonic welding, and improves manufacturing capacity; [0004] b) Excellent welding quality: the control stability of laser welding is good, the stability of welding tension is better, and the welding height is low, and the safety quality is high; [0005] c) Long service life: t...

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 Applications(China)
IPC IPC(8): B23K1/00B23K1/005B23K1/20
CPCB23K1/0056B23K1/0016B23K1/20
Inventor 洪春林纪荣进李聪陈贤锐郑明清陈杰杨山
Owner HUIZHOU LIWINON NEW ENERGY TECH CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com