【摘要】：鋰電池是新能源領(lǐng)域的重要研究內(nèi)容,增材制造技術(shù)是目前制造技術(shù)的前沿和最新發(fā)展,將增材制造技術(shù)應(yīng)用在鋰電池的三維結(jié)構(gòu)制作中是現(xiàn)在的研究熱點(diǎn),鋰電池三維打印就是采用增材制造技術(shù)工藝將個(gè)性化的鋰電池正負(fù)極電極結(jié)構(gòu)打印在導(dǎo)電基底上。論文提出采用低溫直寫3D打印制造三維鋰電池,探討了3D打印三維鋰電池的關(guān)鍵技術(shù),分析并解決材料和設(shè)備研發(fā)過程中所面臨的重要技術(shù)問題,包括鋰電池材料設(shè)計(jì)、三維結(jié)構(gòu)成型方法、鋰電池打印設(shè)備開發(fā)、打印材料制備工藝及打印參數(shù)工藝優(yōu)化。在開發(fā)可用于鋰電池三維打印的設(shè)備方面,主要研究內(nèi)容包括:提出并制作了可降溫至-40℃的低溫沉積制造成型室;制造了打印噴頭XY平面掃描運(yùn)動(dòng),成型平臺(tái)Z軸升降的三維運(yùn)動(dòng)系統(tǒng);設(shè)計(jì)開發(fā)了加熱溫控型注射器擠出的鋰電池打印噴頭;基于Turbo Pmac Clipper數(shù)控卡,搭建了數(shù)控系統(tǒng);最終,根據(jù)這些設(shè)計(jì)的各個(gè)部件,設(shè)計(jì)出合適的結(jié)構(gòu)框架,并將其組裝出完整的用于三維鋰離子電池的低溫直寫3D打印裝備。此外,針對(duì)鋰電池正極活性材料LiFePO_4進(jìn)行分析,配制出了適用于低溫三維鋰電池打印設(shè)備的正極漿料。同時(shí)基于實(shí)驗(yàn)分析,設(shè)計(jì)了一套簡單易行的漿料制備工藝流程;在漿料的組成成分方面,加入1,4二氧六環(huán)有機(jī)溶劑作為低溫結(jié)晶介質(zhì);最后,使用所配制的正極漿料進(jìn)行三維結(jié)構(gòu)打印,考察了三維鋰電池打印工藝影響因素,通過實(shí)驗(yàn)測(cè)試最終確定了打印正極鋰電池漿料的工藝參數(shù);還分析了在室溫和低溫兩種條件下打印的三維結(jié)構(gòu)性能,包括對(duì)結(jié)構(gòu)表面及內(nèi)部形貌特征的分析和孔隙率的測(cè)定等。本論文所開發(fā)的三維鋰電池低溫打印設(shè)備擁有低溫沉積室,具有可降溫至-40℃的明顯特點(diǎn),能夠使結(jié)構(gòu)穩(wěn)定成型,為后續(xù)研究提供設(shè)備和工藝基礎(chǔ)。同時(shí)對(duì)漿料制備工藝、打印參數(shù)的研究,對(duì)后續(xù)負(fù)極材料的打印以及最終鋰電池正負(fù)電極結(jié)構(gòu)的制備提供重要的指導(dǎo)意義。本論文所涵蓋的設(shè)備開發(fā)及實(shí)驗(yàn)研究工作將為最終的三維電池的制備奠定良好的基礎(chǔ)。
[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，

本文編號(hào)：2406873