本研究采用厚度为9μm、孔隙率为45%的聚乙烯（PE）基膜，对比了自研430 Ah大容量电池与常用280 Ah储能电池的性能差异。测试数据表明，采用叠片结构和隔膜涂胶设计的430 Ah电池在电化学性能和安全性能方面均显著优于卷绕结构的280 Ah电池，在针刺测试中温升控制在3℃以内。此外，430 Ah电池在循环450次后容量保持率达到98.5%，比280 Ah电池高3%。叠片结构设计和隔膜涂胶优化设计保证了电池的安全性，提升了电池容量和性能，实现了更长的循环寿命。本研究为大容量储能电池的发展提供了借鉴。

This study utilized a Polyethylene(PE) base membrane with a thickness of 9 μm and a porosity of 45% to compare the performance differences between the self-developed 430 Ah large-capacity battery and the commonly used 280 Ah energy storage battery. The test data indicates that the 430 Ah battery, equipped with a lamination structure and separator coating design, outperforms the 280 Ah battery with a winding structure in electrical performance and exhibits significant advantages in safety,with a temperature rise of less than 3 ℃ after needle puncture. Additionally, the 430 Ah battery maintains a capacity retention rate of 98.5% after 450 cycles, which is 3% higher than the 280 Ah battery. The test data demonstrates that the optimized design of lamination and separator coating ensures the safety of the battery, enhances its capacity and performance, and achieves a higher cycle life. This research provides new insights for the development of high-capacity energy storage batteries.