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. 16, 2018
Filed:
May. 31, 2016
Rohm Co., Ltd., Ukyo-ku, Kyoto, JP;
Yoichi Tamegai, Kyoto, JP;
ROHM CO., LTD., Kyoto, JP;
Abstract
An apparatus for estimating a residual capacity of a storage battery including an electrode whose stage structure is changed based on a state of includes a current monitor configured to monitor a current value flowing in the storage battery; a voltage monitor configured to monitor a voltage value of the storage battery; a Coulomb counter configured to integrate the current value monitored by the current monitor; a differentiation circuit configured to detect a differential value of the voltage value monitored by the voltage monitor; a reset detecting circuit configured to reset an accumulated error due to current integration of the Coulomb counter using an inflection point of the differential value detected by the differentiation circuit; and a residual capacity estimating part configured to estimate a residual capacity of the storage battery based on a value of the Coulomb counter.