Abstract: In recent years, with the development of technology, the application of laser welding is gradually popularized, and laser welding is widely used in manufacturing industry, especially automobile manufacturing industry. At present, laser welding is widely used in lithium-ion battery manufacturing, such as module Busbar welding. Laser welding has many advantages, such as high welding speed, small deformation and high precision, it also has higher requirements for tooling and welding parameters. Reflective lens and other components, different equipments have similar welding properties, and welding parameters have mutual influence, which jointly affect the welding quality. In order to obtain better welding quality, in addition to the basic functional performance acceptance of new equipment, the influence between equipment parameters should be further obtained, so it is necessary to verify the parameters of laser welding equipment in an all-round way. It has become an important research aspect for welding process engineers to carry out multi-factor parameter verification tests and study the influence of the interaction between equipment parameters on welding quality. In this paper, the commonly used welding parameters are selected for design of experimen (DOE) verification, and the degree of factor interaction is obtained, and the theoretical optimal solution is calculated and optimized by Minitab tool.

Key words: Lithium-ion battery; Manufacturing process; Laser welding parameters; DOE; Module Busbar welding

摘要： 近年来随着技术进步，激光焊接的应用逐渐普及，激光焊接在制造业尤其是汽车制造 业被大规模使用。激光焊接目前大量应用与动力电池制造，如模组 Busbar 焊接。激光焊接具 有焊接速度快、变形小、精度高等许多优点，对工装、焊接参数等有更高的要求。不同设备 间受工装等部件影响会呈现相近但不相同的焊接属性，焊接参数之间存在相互影响，共同作 用于焊接质量。为了能获得更优的焊接质量，针对新设备除了进行基础的功能性能验收外， 还要对激光焊接设备参数进行全因子的验证。进行多因子参数验证试验，研究设备各参数之 间相互作用对焊接质量的影响成为焊接工艺工程师的重要研究方向以及设备参数调整的依 据。文章挑选较为常用的焊接参数进行试验设计（DOE）验证，得出因子交互影响程度并用 Minitab 工具计算优化出理论优解。

关键词: 动力锂电池；电池制造工艺；激光焊接参数；DOE；模组 Busbar 焊接