嵌入式复合材料结构电池的弯曲和压缩性能研究  

Study on bending and compression properties of embedded composite structure batteries

作　　者：尚余祥 王晓晨 毛芮 任智猛 雷振坤[1] 白瑞祥[1] SHANG Yuxiang;WANG Xiaochen;MAO Rui;REN Zhimeng;LEI Zhenkun;BAI Ruixiang(State Key Laboratory of Structural Analysis,Optimization and CAE Software for Industrial Equipment,Department of Engineering Mechanics,Dalian University of Technology,Dalian 116024,Liaoning,China)

机构地区：[1]工业装备结构分析优化与CAE软件全国重点实验室,大连理工大学工程力学系,辽宁大连116024

出　　处：《实验力学》2024年第5期560-570,共11页Journal of Experimental Mechanics

基　　金：国家自然科学基金项目(11972106,12272080)。

摘　　要：复合材料结构电池作为一种新型储能方式在航空航天、交通运输等领域具有潜在的应用前景。本文采用真空辅助树脂传递成型工艺将软包电池嵌入到复合材料层压板中,制备出复合材料结构电池,根据ASTM测试标准开展了弯曲和压缩试验研究。三点弯曲测试表明,相较于层压板而言,复合材料结构电池的弯曲强度和杨氏模量分别下降了57.1%和35.2%,其弯曲破坏造成较大范围内的纤维断裂和分层;压缩测试表明,相较于层压板而言,复合材料结构电池的弯曲强度和杨氏模量分别下降了37.6%和11.0%,其压缩破坏在电池/复合材料界面产生横向贯穿裂纹。复合材料结构电池在弯曲和压缩破坏后的充电时间都会减少,但充电容量、放电时间、放电容量未发生明显变化。同软包电池相比,复合材料结构电池具有稳定的电学性能和可靠的力学性能,可以出色稳定地发挥结构承载与电能存储的作用。Composite structural battery,as an innovative energy storage solution,has potential application prospects in aerospace,transportation and other fields.In this study,a vacuum-assisted resin transfer molding technology was used to embed soft pack batteries into composite laminates and prepare composite structured batteries.Bending and compression tests were conducted on them according to the ASTM testing standards.The three-point bending test show that the bending strength and Young′s modulus of the composite structure battery decrease by 57.1%and 35.2%respectively compared to the laminated plate,resulting in a large range of fiber fracture and delamination.The compression tests show that the compressive strength and Young′s modulus of composite structured batteries decrease by 37.6%and 11.0%respectively compared to laminated plates,and cracks are generated and penetrated laterally at the battery/composite interface.The charging time decrease after bending and compression damage,and there are no significant changes in charge capacity,discharge time,and discharge capacity.It shows that compared with soft pack batteries,composite structure batteries have stable electrical and reliable mechanical properties,which can effectively and stably play the role of structural load-bearing and energy storage.

关 键 词：复合材料结构电池 电学性能 弯曲性能 压缩性能 

分 类 号：O348.1[理学—固体力学] O346.1[理学—力学]