Lithium ion pouch type batteries pack laser welding

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Lithium ion pouch type batteries pack laser welding | #laser #battery

Lithium Polymer Battery

April 23, 2025

Category Connection: Lithium Polymer Battery

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Advantages of laser welding
Energy concentration, high welding efficiency, high machining accuracy and large weld depth width ratio. The laser beam is easy to focus, align and guided by optical instruments. It can be placed at an appropriate distance from the workpiece and can be guided between fixtures or obstacles around the workpiece. Other welding rules cannot be brought into play due to the above space constraints. Small heat input, small heat affected zone, small residual stress and deformation of workpiece; The welding energy can be accurately controlled, the welding effect is stable and the welding appearance is good;
Non contact welding, optical fiber transmission, good accessibility and high degree of automation. When welding thin materials or fine diameter wires, it will not be easy to have the trouble of remelting like arc welding. Due to the principle of "lightness", the cell used for power battery usually adopts "lighter" aluminum material, but also needs to be made thinner. Generally, the shell, cover and bottom are basically required to be less than 1.0mm. At present, the thickness of basic materials of mainstream manufacturers is about 0.8mm.
It can provide high-strength welding for various material combinations, especially when welding between copper materials and aluminum materials. This is also the only technology that can weld electroplated nickel to copper materials.
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#Lithium Polymer Battery #Lithium Ion Polymer Battery #Lithium Polymer Lipo Battery