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:
Dec. 01, 2020
Filed:
Jul. 11, 2018
Honda Motor Co., Ltd., Tokyo, JP;
HONDA MOTOR CO., LTD., Tokyo, JP;
Abstract
This battery capacity estimation device is provided with: a condition variable acquisition unit which acquires standard variable values (Tstd, Istd, V1std, V2std) indicating a standard charging condition in a secondary battery and measurement variable values (Tmes, Imes, V1mes, V2mes) indicating an actual charging condition obtained by measurement; and a capacity estimation unit which estimates the maximum capacity from a relationship between the standard variable values and the measurement variables acquired by the condition variable acquisition unit, wherein the capacity estimation unit calculates an apparent capacity (ΔQmes/ΔSOC) by using a uniform calculation method regardless of a change in charging condition, and estimates the maximum capacity (Qmax) by adding, to the apparent capacity, a correction amount obtained by using the differences between the measurement variables and the standard variables.