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
CN111702319AInactive Publication Date: 2020-09-25惠州市金合电子有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
惠州市金合电子有限公司
Publication Date
2020-09-25
Estimated Expiration
Not applicable · inactive patent

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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.
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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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