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:
May. 19, 2020
Filed:
Jun. 02, 2017
Furukawa Electric Co., Ltd., Tokyo, JP;
Furukawa Automotive Systems Inc., Shiga, JP;
Naoya Takashima, Tokyo, JP;
Noriyasu Iwane, Tokyo, JP;
FURUKAWA ELECTRIC CO., LTD., Tokyo, JP;
FURUKAWA AUTOMOTIVE SYSTEMS INC., Shiga, JP;
Abstract
Problem: To accurately detect the state of charge of a secondary battery regardless of the state of the same. Resolution Means: A secondary battery state detection devicefor detecting the state of a secondary batteryhas a measurement unit (voltage sensor) for measuring or estimating the open-circuit voltage of the secondary battery, a determination unit (control unit) for determining a state of charge by applying the open-circuit voltage measured or estimated by the measurement unit to a correlation equation expressing the relationship between the open-circuit voltage and state of charge, a calculation unit (control unit) for calculating a state of charge on the basis of the internal resistance of the secondary battery, and a correction unit (control unit) for correcting the correlation equation of the determination unit if the values of the state of charge determined by the determination unit and the state of charge calculated by the calculation unit differ.