用于三维锂离子电池的低温直写3D打印装备开发与工艺研究
发布时间：2019-01-11 07:54
【摘要】：锂电池是新能源领域的重要研究内容,增材制造技术是目前制造技术的前沿和最新发展,将增材制造技术应用在锂电池的三维结构制作中是现在的研究热点,锂电池三维打印就是采用增材制造技术工艺将个性化的锂电池正负极电极结构打印在导电基底上。论文提出采用低温直写3D打印制造三维锂电池,探讨了3D打印三维锂电池的关键技术,分析并解决材料和设备研发过程中所面临的重要技术问题,包括锂电池材料设计、三维结构成型方法、锂电池打印设备开发、打印材料制备工艺及打印参数工艺优化。在开发可用于锂电池三维打印的设备方面,主要研究内容包括:提出并制作了可降温至-40℃的低温沉积制造成型室;制造了打印喷头XY平面扫描运动,成型平台Z轴升降的三维运动系统;设计开发了加热温控型注射器挤出的锂电池打印喷头;基于Turbo Pmac Clipper数控卡,搭建了数控系统;最终,根据这些设计的各个部件,设计出合适的结构框架,并将其组装出完整的用于三维锂离子电池的低温直写3D打印装备。此外,针对锂电池正极活性材料LiFePO_4进行分析,配制出了适用于低温三维锂电池打印设备的正极浆料。同时基于实验分析,设计了一套简单易行的浆料制备工艺流程;在浆料的组成成分方面,加入1,4二氧六环有机溶剂作为低温结晶介质;最后,使用所配制的正极浆料进行三维结构打印,考察了三维锂电池打印工艺影响因素,通过实验测试最终确定了打印正极锂电池浆料的工艺参数;还分析了在室温和低温两种条件下打印的三维结构性能,包括对结构表面及内部形貌特征的分析和孔隙率的测定等。本论文所开发的三维锂电池低温打印设备拥有低温沉积室,具有可降温至-40℃的明显特点,能够使结构稳定成型,为后续研究提供设备和工艺基础。同时对浆料制备工艺、打印参数的研究,对后续负极材料的打印以及最终锂电池正负电极结构的制备提供重要的指导意义。本论文所涵盖的设备开发及实验研究工作将为最终的三维电池的制备奠定良好的基础。
[Abstract]:Lithium battery is an important research content in the field of new energy. The material increasing manufacturing technology is the frontier and the latest development of the manufacturing technology at present. The application of the material augmentation manufacturing technology in the fabrication of the three-dimensional structure of the lithium battery is the research hotspot now. The three dimensional printing of lithium battery is to print the individualized cathode and cathode structure of lithium battery on the conductive substrate by the technology of adding material. In this paper, the low temperature direct writing 3D printing is used to fabricate 3D lithium battery. The key technology of 3D printing lithium battery is discussed, and the important technical problems in the research and development of materials and equipment are analyzed and solved, including the design of lithium battery material. Three-dimensional structure molding method, lithium battery printing equipment development, printing material preparation technology and printing parameters optimization. In the development of three-dimensional printing equipment for lithium-ion batteries, the main research contents are as follows: a low-temperature deposition molding chamber with temperature drop to -40 鈩，
本文编号：2406873
[Abstract]:Lithium battery is an important research content in the field of new energy. The material increasing manufacturing technology is the frontier and the latest development of the manufacturing technology at present. The application of the material augmentation manufacturing technology in the fabrication of the three-dimensional structure of the lithium battery is the research hotspot now. The three dimensional printing of lithium battery is to print the individualized cathode and cathode structure of lithium battery on the conductive substrate by the technology of adding material. In this paper, the low temperature direct writing 3D printing is used to fabricate 3D lithium battery. The key technology of 3D printing lithium battery is discussed, and the important technical problems in the research and development of materials and equipment are analyzed and solved, including the design of lithium battery material. Three-dimensional structure molding method, lithium battery printing equipment development, printing material preparation technology and printing parameters optimization. In the development of three-dimensional printing equipment for lithium-ion batteries, the main research contents are as follows: a low-temperature deposition molding chamber with temperature drop to -40 鈩，
本文编号：2406873
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