| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a battery system 1 having a simple constitution for evaluating characteristics of a secondary battery 10. <P>SOLUTION: The battery system 1 includes: the secondary battery 10 having a positive pole 11, a negative pole 15 and electrolytes 12, 14; a storage section 23 for storing beforehand measured intrinsic information of the secondary battery 10 including an initial resistance value and an evaluation frequency; a power source section 20 for applying an AC signal of the evaluation frequency being stored in the storage section 23 to the secondary battery 10; a measurement section 22 for measuring an impedance of a solid electrolyte boundary face coating 17 of the secondary battery 10 from the AC signal; and a calculation section 24 for calculating at least any of a deterioration degree and a charging depth of the secondary battery 10 from the impedance and the intrinsic information. <P>COPYRIGHT: (C)2013,JPO&INPIT |
