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. 05, 2015
Filed:
Feb. 24, 2010
Tetsuro Shigemizu, Tokyo, JP;
Masami Iida, Tokyo, JP;
Tetsuro Shigemizu, Tokyo, JP;
Masami Iida, Tokyo, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
A first estimated state of charge is output based on an estimated open voltage of a secondary battery. A second estimated state of charge is output based on the result obtained by integrating the measured current of the secondary battery and the upper limit of the error of the measured current and the capacity of the secondary battery. A third estimated state of charge is output based on the result obtained by integrating the measured current and the lower limit of the error of the measured current and the battery capacity. A fourth estimated state of charge is output based on the result obtained by integrating the measured current and the battery capacity. The fourth estimated state of charge is output as a state of charge within the period of the predetermined period.