为了系统研究锂离子电池正极片制作工艺对电池性能的影响,采用Li Fe PO4作为正极活性材料组装成扣式实验电池,分别考察了正极片的涂敷厚度、辊压压下率、辊压道次数和辊压温度对电池主要电化学性能的影响,发现这些工艺因素显著影响电池...为了系统研究锂离子电池正极片制作工艺对电池性能的影响,采用Li Fe PO4作为正极活性材料组装成扣式实验电池,分别考察了正极片的涂敷厚度、辊压压下率、辊压道次数和辊压温度对电池主要电化学性能的影响,发现这些工艺因素显著影响电池性能,而且都可以归结为通过影响电池内阻而影响电池性能的。当涂敷厚度为100 mm、辊压压下率为50%、辊压道次数为3、辊压温度为160℃时电池有比较好的综合性能。展开更多
Automatic width control is a key issue in hot strip rolling process. The edge rolling has been widely used in the roughing stand of hot strip mill to control the width of the slab. However, the edge rolling and conseq...Automatic width control is a key issue in hot strip rolling process. The edge rolling has been widely used in the roughing stand of hot strip mill to control the width of the slab. However, the edge rolling and consequent hori- zontal rolling will cause a significant width change in the head part and tail part of the slab, which have to be trimmed before the finishing stands. Based on the width reduction deformation curve of the head and tail along the longitudinal direction of slab, the short stroke control （SSC） technology has been developed to overcome this problem. The finite element method has been used to simulate the unsteady edge rolling process. Three short stroke control curves have been compared in order to obtain the best width control result. The optimized short stroke control curve has been ap- plied to the automatic width control system of industrial hot rolling mill, and good performance is obtained.展开更多
文摘为了系统研究锂离子电池正极片制作工艺对电池性能的影响,采用Li Fe PO4作为正极活性材料组装成扣式实验电池,分别考察了正极片的涂敷厚度、辊压压下率、辊压道次数和辊压温度对电池主要电化学性能的影响,发现这些工艺因素显著影响电池性能,而且都可以归结为通过影响电池内阻而影响电池性能的。当涂敷厚度为100 mm、辊压压下率为50%、辊压道次数为3、辊压温度为160℃时电池有比较好的综合性能。
基金Item Sponsored by National Science and Technology Support Programfor 11th Five-Year Plan of China (2006BAE03A13)International Cooperation Research Project of Shanxi Province (2009081013)
文摘Automatic width control is a key issue in hot strip rolling process. The edge rolling has been widely used in the roughing stand of hot strip mill to control the width of the slab. However, the edge rolling and consequent hori- zontal rolling will cause a significant width change in the head part and tail part of the slab, which have to be trimmed before the finishing stands. Based on the width reduction deformation curve of the head and tail along the longitudinal direction of slab, the short stroke control （SSC） technology has been developed to overcome this problem. The finite element method has been used to simulate the unsteady edge rolling process. Three short stroke control curves have been compared in order to obtain the best width control result. The optimized short stroke control curve has been ap- plied to the automatic width control system of industrial hot rolling mill, and good performance is obtained.
