Journal of the Korea Convergence Society (한국융합학회논문지)

Korea Convergence Society (한국융합학회)
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Thermally Conductive Polymer Composites for Electric Vehicle Battery Housing

전기자동차 배터리 하우징용 열전도성 고분자 복합재료

  • Yoon, Yeo-Seong (Division of Innopolis R&D Corp. Korea Automotive Technology Institute) ;
  • Jang, Min-Hyeok (Division of Chemical & Biological Engineering, Hanbat University) ;
  • Moon, Dong-Joon (Division of Innopolis R&D Corp. Korea Automotive Technology Institute) ;
  • Jang, Eun-jin (Division of Innopolis R&D Corp. Korea Automotive Technology Institute) ;
  • Oh, Mee-Hye (Division of Innopolis R&D Corp. Korea Automotive Technology Institute) ;
  • Park, Joo-Il (Division of Chemical & Biological Engineering, Hanbat University)
  • Received : 2022.04.05
  • Accepted : 2022.04.20
  • Published : 2022.04.28
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Abstract

Manufactured thermoplastic composite materials to replace the metal materials used as battery housing materials for electric vehicles with lightweight materials. As the matrix material, nylon 6 which is a polymer material was used. Boron Nitrate(BN), which has high thermal conductivity, was used to provide heat dissipation performance. The heat dissipation characteristics of the thermally conductive polymer composite material according to the BN content and particle size were analyzed. The thermal conductivity value increased as the filler content increased, and composite materials particle size of 60 to 70㎛ and BN content of 50%, the thermal conductivity was 1.4 W/mK. The larger the particle size, the wider the inter-particle interface contact surface, which means that a thermal path was formed. wider the interfacial contact surface between the particles, and the thermal path was formed. A battery housing was manufactured using the manufactured thermally conductive polymer composite material, and the temperature change during charging and discharging of the cell was observed, and the possibility as a substitute material for the battery housing was confirmed.

전기자동차용 배터리 하우징 소재로 사용되고 있는 금속 소재에서 경량소재로 대체하기 위한 열가소성복합재료를 제조하였다. 매트릭스 소재는 고분자 소재인 나일론 6를 사용 하였으며 방열 성능을 부여하기 위해 열전도도가 높은 Boron Nitrate(BN)를 사용하였다. 동일한 필러의 함량 및 입자 크기에 따른 열전도성 고분자 복합재료의 방열 특성을 분석하였다. 필러의 함량이 증가할수록 열전도도 값이 증가하였으며, 입자크기가 60~70㎛인 BN의 함량이 50%인 복합재료의 경우 1.4W/mK 이상 열전도도를 나타내었다. 입자 크기가 클수록 입자 간 계면 접촉면이 넓어져 Thermal path가 이루어짐을 확인하였다. 제조된 열전도성 고분자복합재료를 이용하여 배터리 하우징을 제작하였으며 셀의 충방전 동안 온도 변화를 관찰하여 배터리 하우징의 대체 소재로서의 가능성을 확인하였다.

Keywords

Acknowledgement

This results was supported by "Regional Innovation Strategy (RIS)" through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (MOE) (2021RIS-004).

References

  1. W. J. Lee (2019). Supply and demand. SEOUL : eBest INVESTMENT & SECURITIES Co.,Ltd.
  2. R. J. Brodd & W. Martin. (2004). What are Batteries, Fuel Cells, and Supercapacitors?. Journal of American Chemical Society, 104, 4245-4269. DOI : 10.1021/cr020730k
  3. Q. Wang, B. Jiang, B. Li & Y. Yan. (2016). A critical review of thermal management models and solutions of lithium-ion batteries for the development of pure electric vehicles. Renewable and Sustainable Energy Reviews, 64, 106-128. DOI : 10.1016/j.rser.2016.05.033
  4. X. Fenga, M. Ouyang, X. Liu, L. Lu, Y. Xia & X. He. (2018). Thermal runaway mechanism of lithium ion battery for electric vehicles : A review. Energy Storage Materials, 10, 246-267. DOI : 10.1016/j.ensm.2017.05.013
  5. J. C. Kim, G. R. Choi & S. J. Lee. (2011). Thermal Runaway Prevention of MOV and Safety Improvement of Power Line System and Internal Electronic Device Circuit Using a Phosphorous Switching Module. Journal of the Korean Institute of IIIuminating and Electrical Installation Engineers, 25(9), 75-79. DOI : /10.5207/JIEIE.2011.25.9.075
  6. D. Ouyang, M. Chen, Q. Huang, J. Weng, Z. Wan & J. Wang. (2019) A Review on the Thermal Hazards of the Lithium-Ion Battery and the Corresponding Countermeasures. Applied Sciences, 9(12), 2483. DOI : 10.3390/app9122483
  7. R. Spotnitz & J. Franklinb. (2003) Abuse Behavior of High-power, Lithium-ion Cells. Journal of Power Source, 113, 81-100. DOI : 10.1016/S0378-7753(02)00488-3
  8. H. Maleki & A. K. Shamsuri. (2003). Thermal Analysis and Modeling of a Notebook Computer Battery. Journal of Power Source, 115, 131-136. DOI : 10.1016/S0378-7753(02)00722-X
  9. J. Y. Han, S. S. Kim & S. S. Yu. (2012). Lithium-ion battery thermal management two-dimension modeling for hybrid vehicles thermal management. The Korean Society Automotive Engineers, 2338-2343.
  10. L. Aiello et al. (2020). In Situ Measurement of Ortho tropic Thermal Conductivity on Commercial Pouch Lithium-Ion Batteries with Thermoelectric Device. Batteries, 6(1), 10. DOI : 10.3390/batteries6010010
  11. C. Huang, X. Qian & R. Yang. (2018). Thermal conductivity of polymers and polymer nanocomposites. Materials Science and Engineering: R: Reports. 132, 1-22. DOI : doi.org/10.1016/j.mser.2018.06.002
  12. K. Sanada, Y. Tada & Y. Shindo. (2009). Thermal Conductivity of Polymer Composites with Close-packed Structure of Nano and Micro Fillers. Journal of Composites, 40, 724-730. DOI : 10.1016/j.compositesa.2009.02.024
  13. Y. S. Yoon, M. H. Oh & D. J. Moon. (2019). A Study of Heat Sink for Different Composite Materials. ICCM 22.