This welding system employs manual loading and unloading, automatic CCD imaging and trajectory capture, and precise movement of the welding head to the welding pad position for complete welding with laser output, thus achieving the welding of battery protection boards. Its key features include manual loading and unloading, automatic welding completion, and simple operation, making it a simple solution for the automatic laser welding of lithium battery protection boards.
Application solution of laser automatic welding for lithium battery protection boards
Equipment Introduction (Non-standard Customization):
This welding system employs manual loading and unloading, automatic CCD imaging and trajectory capture, and precise laser head movement to the welding position for welding of battery protection boards. Its features include manual loading and unloading, automatic welding completion, and simple operation; automatic safety doors and protective light curtains to prevent laser radiation and ensure operator safety; precise laser control with a small focused spot for high-precision positioning and easy automation.
Laser welding solutions:
Laser welding has become a crucial process in lithium battery manufacturing. It offers advantages such as high energy density, minimal welding deformation, and a small heat-affected zone, effectively improving manufacturing precision. This results in smooth, impurity-free, uniform, and dense welds, eliminating the need for additional grinding. Furthermore, the concentrated and controllable energy allows for fast welding speeds, facilitating automated production, high yield rates, and enhanced battery welding safety with no adverse effects on human health, making it suitable for cleanroom environments. Since power batteries typically incorporate multiple materials, laser welding can also weld dissimilar metals. The following is an example of a lithium battery module welding project:
1. Enables automatic feeding, inspection, cleaning, dispensing, and stacking of battery cells into modules; highly compatible, allowing for arbitrary combinations of parallel and serial cell configurations to achieve automated production;
2. The cells are bundled and connected to the electrode plates manually on the line;
3. For the welding section, the system automatically identifies copper, aluminum, and copper-aluminum materials, and then switches the welding mode accordingly. (Due to the variety of product models and variations in the position of the connecting pieces, vision is required to locate and identify the materials.)
4. Data traceability.
Manual material loading → Start button → Cylinder feeds material to welding position → X and Y axes move to vision starting point → Complete vision and laser welding of one batch of material → X, Y, and Z axes reset, cylinder reset → Remove component → Next cylinder feeding welding cycle.
The key technologies for the future development of electric vehicles are the safety, cost, and energy storage capacity of power lithium batteries. The manufacturing process of power batteries is complex and requires high safety standards; one of the key technologies in this process is laser welding. Laser welding of power batteries includes welding of battery soft connections, top cover welding, sealing nail welding, and module and PACK welding. The numerous laser welding points in power batteries, coupled with high reliability and safety requirements, place higher demands on laser welding equipment.
