The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 27, 2015
Filed:
Apr. 09, 2009
Katsuya Nukui, Tokyo, JP;
Katsuya Nukui, Tokyo, JP;
THE FURUKAWA ELECTRIC CO., LTD, Tokyo, JP;
Abstract
There is provided a battery state detecting method that detects states by evaluating depletion caused by reaction processes whose speeds are different. Voltage V, current Iand temperature Tof a battery are measured and inputted in Step Sand it is judged whether or not an absolute value of the measured current Imes is smaller than a current threshold value Ithre in Step S. OCVis estimated from SOCand SOHafter the previous discharge/charge based on a stable OCV estimating equation in Step Sand a difference between the voltage measured value Vmes and the OCVis calculated and stored in Step S. A relaxation function F(t) is updated corresponding to time t in processes in Steps Sthrough S. SOHis calculated by using the updated F(t) in Step Sand SOCis calculated in Step S