宇航用锂离子蓄电池合格率提升研究与实践

Research and Practice on Qualification Rate Improvement of Lithium-ion Battery Cell for Aerospace

在锂离子蓄电池实际生产过程中,存在合格率偏低和波动度较大的情况。针对该问题开展合格率提升与稳定性控制研究,通过识别关注工序、梳理质量控制点、分析人机料法环测等方法进行影响因素分析。瞄准薄弱环节开展工艺攻关,突破了锂离子蓄电池高精度、高一致性涂布技术,面密度在线检测与反馈技术,高可靠锂离子蓄电池极片智能检测分选技术。薄弱工序合格率指标明显提升,从而提升了锂离子蓄电池的产品合格率,取得了良好的质量效益和经济效益。

In the current production process of lithium-ion battery cells,the quality of the products fluctuates,and the qualification rate remains low.In response to these problems,qualification rate improvement and stability control research are carried out,and the influencing factors are analyzed by identifying the concerned processes,sorting out quality control points,analyzing man-machine-material method and environmental testing,prioritizing improving the weak links of the production,and breaking through the high-precision and high-consistency coating technology of lithium-ion battery cell,online detection and feedback technology of areal density,and intelligent detection and sorting technology of high-reliability lithium-ion battery pole pieces.The qualification rate index of weak processes has been significantly improved,and so the product qualification rate of lithium-ion battery cells is improved while ensuring economic benefits.