抄録
Lithium ion battery is generally used in mobile devices and electric cars because of its advantages; high energy density, easy downsizing and environmentally friendly. On the other hand there are protection structures in the battery for the safety, and it is difficult to disassemble the battery for the health diagnosis. In this paper, a nondestructive inspection technique using inverse analysis of electromagnetic field for the lithium ion battery has been developed. This technique enable to estimate current density distribution in lithium ion battery without taking apart with boundary element method. To verify the proposed technique, numerical simulations using the nondefective battery model and the defective battery model have been conducted. The results show that the proposed technique could detect defects in the battery and be applicable to practical problems.
