Performance of short carbon fiber reinforced nylon composite and it's application in battery pack

doi:10.19936/j.cnki.2096-8000.20210928.007

Abstract

Abstract: It is difficult to predict the mechanical properties of short fiber reinforced composites which are used for battery pack lightweight due to anisotropy. This paper studies the mechanical properties of short carbon fiber reinforced nylon 66 composites (PA66CF) with different fiber contents. Furthermore, the simulation method and application effect of different fiber contents PA66CF applied to battery pack are studied. Firstly, the stress-strain curve of PA66CF were obtained through tensile experiments. Then the PA66 material parameters were corrected, and the tensile sample FE models using the criterion of maximum strain were established to verify the accuracy of the simulation process. Finally, the corrected material model and failure criterion were applied to the mechanical analysis of emergency braking and abrupt-turning on the bumpy road of the battery pack, and the maximum displacement, the maximum stress of the system and the maximum stress of the pack are compared with the metal battery pack. The results showed that compared with the metal pack, the mass of PA66CF packs were reduced by 84%, and the maximum stress of the PA66CF packs were reduced by 30%~50% under the above two conditions. Additionaly, the maximum displacement of battery pack could be affected by the carbon fiber content. The research in this paper provides simulation reference for the application of PA66CF material in battery pack.

Key words: short carbon fiber reinforced composite, battery pack, lightweight, simulation model

CLC Number:

TB332

LIU Ying, MA Yi-tao, LIU Qiang. Performance of short carbon fiber reinforced nylon composite and it's application in battery pack[J]. COMPOSITES SCIENCE AND ENGINEERING, 2021, 0(9): 46-54.

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