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Welding method for tab of soft-package battery cell

A welding method and tab technology, applied in welding equipment, non-electric welding equipment, circuits, etc., can solve problems such as easy breakage, and achieve the effects of avoiding easy breakage, improving safety, and saving costs

Inactive Publication Date: 2020-09-25
惠州市金合电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The soft-pack cylindrical battery is a recently developed battery used in wearable and portable products. Because it is packaged in aluminum-plastic film, it can expand and deform without explosion in the event of a short circuit or puncture. The electronic equipment of the human body has excellent safety guarantees, but this type of battery also has shortcomings. Since the pole piece of the soft-packed cylindrical battery must be provided with tabs to connect with external charging and discharging equipment, the welding position is a weak point. Charge-discharge expansion characteristics, this position is very easy to become a fracture position, so further improvement is needed

Method used

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  • Welding method for tab of soft-package battery cell
  • Welding method for tab of soft-package battery cell
  • Welding method for tab of soft-package battery cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as Figure 1-2 As shown, the present invention provides a method for welding tabs of soft-packed batteries, comprising the following steps:

[0032] (1) Select the positive electrode material or negative electrode material that has been coated, and use it to prepare the positive electrode or negative electrode sheet of the soft-packed battery cell after slitting;

[0033] (2) A welding position 1 is set at one end of the pole piece, and the part connected to the welding position 1 is the paint area 2;

[0034] (3) Select the tab material 3, so that the tab material 3 is coated with the tab glue 4;

[0035] (4) Fix one end of the tab and the welding position 1 together.

[0036] In this embodiment, in step (2), an overlapping area is set in the welding position 1 for fixing with the tab.

[0037] In this embodiment, the specific method of fixing the tab and the welding position 1 in step (4) is as follows: a soldering area 5 is set on the end where the tab and th...

Embodiment 2

[0045] Such as image 3 As shown, the present invention provides a method for welding tabs of soft-packed batteries, comprising the following steps:

[0046] (1) Select the positive electrode material or negative electrode material that has been coated, and use it to prepare the positive electrode or negative electrode sheet of the soft-packed battery cell after slitting;

[0047] (2) A welding position 1 is set at one end of the pole piece, and the part connected to the welding position 1 is the paint area 2;

[0048] (3) Select the tab material 3, so that the tab material 3 is coated with the tab glue 4;

[0049] (4) Fix one end of the tab and the welding position 1 together.

[0050] In this embodiment, in step (2), an overlapping area is set in the welding position 1 for fixing with the tab.

[0051] In this embodiment, the specific method for fixing the tab and the welding position 1 in step (4) is as follows: a soldering area 5 is provided on the end where the tab and...

Embodiment 3

[0059] Such as Figure 4 As shown, the present invention provides a method for welding tabs of soft-packed batteries, comprising the following steps:

[0060] (1) Select the positive electrode material or negative electrode material that has been coated, and use it to prepare the positive electrode or negative electrode sheet of the soft-packed battery cell after slitting;

[0061] (2) A welding position 1 is set at one end of the pole piece, and the part connected to the welding position 1 is the paint area 2;

[0062] (3) Select the tab material 3, so that the tab material 3 is coated with the tab glue 4;

[0063] (4) Fix one end of the tab and the welding position 1 together.

[0064] In this embodiment, in step (2), an overlapping area is set in the welding position 1 for fixing with the tab.

[0065] In this embodiment, the specific method of fixing the tab and the welding position 1 in step (4) is as follows: a soldering area 5 is set on the end where the tab and the we...

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Abstract

The invention provides a welding method for tab of a soft-package battery cell. The welding method comprises the following steps: (1) selecting a coated positive electrode material or negative electrode material, and slitting the material for manufacturing the tab of a positive electrode or a negative electrode of the soft-package battery cell; (2) arranging a welding position at one end of the tab, wherein the part connected to the welding position is a paint region; (3) selecting a tab material, and coating tab glue on the tab material; and (4) fixing one end of the tab to the welding position. The welding method for the tab of the soft-package battery cell has the advantages of favorably improving battery quality, being high in safety, saving cost and the like, greatly improves firmnessof the tab, avoids a phenomenon that tab is easily broken by welding in a conventional process, and has a great economic value and a great use value.

Description

technical field [0001] The invention relates to the technical field of battery design, in particular to a method for welding tabs of soft-packed batteries Background technique [0002] The soft-pack cylindrical battery is a recently developed battery used in wearable and portable products. Because it is packaged in aluminum-plastic film, it can expand and deform without explosion in the event of a short circuit or puncture. The electronic equipment of the human body has excellent safety guarantees, but this type of battery also has shortcomings. Since the pole piece of the soft-packed cylindrical battery must be provided with tabs to connect with external charging and discharging equipment, the welding position is a weak point. Due to the charging and discharging expansion characteristics, this position is extremely easy to become a fracture position, so further improvement is needed. Contents of the invention [0003] A common problem of cylindrical secondary lithium bat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K20/10B23K20/24B23K20/26H01M2/26
CPCB23K20/10B23K20/24B23K20/26Y02E60/10
Inventor 崔彪
Owner 惠州市金合电子有限公司
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