Energy Storage Science and Technology ›› 2022, Vol. 11 ›› Issue (1): 265-274.doi: 10.19799/j.cnki.2095-4239.2021.0343

• Energy Storage Test: Methods and Evaluation • Previous Articles     Next Articles

Effect of magnetic field on the lithium-ion battery performance

Guanqiang RUAN(), Jing HUA, Xing HU, Changqing YU   

  1. School of Mechanical Engineering, Shanghai Dianji University, Shanghai 201306, China
  • Received:2021-07-14 Revised:2021-08-09 Online:2022-01-05 Published:2022-01-10
  • Contact: Guanqiang RUAN E-mail:ruangq5551@163.com

Abstract:

The electric vehicle industry is rapidly developing, and the performance of lithium-ion batteries is very important to the growing range of electric vehicles. A magnetic field is generated by the change of the moving charge or the electric field. When an external magnetic field is applied to a substance, the inside of that substance is magnetized, and many tiny magnetic dipoles appear. In this study, an experimental method is proposed to test the performance of lithium-ion batteries under the effect of a magnetic field and deeply analyze the influence of this magnetic field on the battery performance. The experiment platform included lithium-ion batteries, a battery charge and discharge test system, and a magnetic field generating system. Comparative experiments were performed on Panasonic 18650 lithium-ion batteries to study their charge and discharge performances and internal resistance. The experimental results show that lithium-ion batteries have good environmental adaptability and charge-discharge performance under the magnetic field effect. When different magnetic field effects were loaded, the charge and discharge capacities of the lithium-ion batteries changed and increased with the enhancement of the magnetic induction intensity. In the discharge process, the greater the magnetic induction intensity, the smaller the batteries' ohmic internal resistance and polarization internal resistance. The results prove that the problem of the short range of the current lithium-ion batteries can effectively be solved.

Key words: magnetic field effect, lithium-ion battery, performance

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