The tab is a component of soft-pack lithium-ion battery products. The battery is divided into positive and negative poles. The tabs are the metal conductors that lead the positive and negative poles out of the battery core. Generally speaking, the tabs of the positive and negative poles of the battery are the contact points during charging and discharging. The positive electrode of the battery is made of aluminum (Al) material, the negative electrode is made of nickel (Ni) material, and the negative electrode is also made of copper-plated nickel (Ni-Cu) material. They are composed of a film and a metal strip.

Classification by tab metal belt material:

1. Aluminum (Al) tab: Generally used as a positive tab. If the battery is a lithium titanate negative electrode, it is also used as a negative tab.

2. Nickel (Ni) tabs: used as negative tabs, mainly used in small digital batteries, such as mobile phone batteries, mobile power batteries, tablet computer batteries, smart transmission equipment batteries, etc.

3. Copper nickel-plated (Ni-Cu) tabs: used as negative electrode tabs, mainly used in power batteries and high-rate batteries.

2. Classification according to ear glue (domestic market):

1. Vinyl tabs: generally used on small and medium-end digital batteries.

2. Yellow glue tabs: generally used in low- to medium-end power batteries and high-rate batteries.

3. White glue tabs: generally used in high-end digital batteries, power batteries and high-rate batteries.

3. Packaging classification of finished products:

1. Disc-type tabs (the entire metal strip is wound into a disc after passing the equipment and adding film), used in automated production lines.

2. Plate-type tabs (metal strips plus film are cut into individual pieces, and then placed in a row with two thin transparent plastic sheets sandwiched between them), used in ordinary production lines.

Automation of pole lug to nickel laser welding:

Tip Conversion to Nickel Note: The positive aluminum tab is to be converted to nickel to facilitate its connection with other materials. Therefore, in the conversion to nickel, laser welding is relatively simple compared to the welding of other cell structures, and the laser power requirements are not high. High, generally a power of 500-1000W can achieve continuous welding, and it is easier to realize automation. Basically, there is no problem. For some companies with higher requirements, a tensile test is required after the pole lug is turned to nickel to reach a certain level. 

quality requirements. Automated welding process: The automation structure is simple. The process is basically that the soft package electrical materials are loaded first, then rotated to another station through the turntable for shaping, the tabs are pressed and flattened, and then rotated to another station for welding. , at this time, the nickel strip automatic feeder realizes automatic cutting, and is combined with the soft pack battery tab through a universal indenter to realize laser output welding. After welding, the next step of automatic tests and rating of the tab welding tension can also be carried out. Classification!

[Xinhuapeng laser soft-pack battery tab turning nickel automation equipment is currently in stock. They are all customized and produced by customers. Friends who are in need of laser welding can contact us to make an appointment to visit! 】