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:
Feb. 19, 2019
Filed:
Jun. 22, 2010
Keiko Abe, Mito, JP;
Yasuhiro Kobayashi, Hitachinaka, JP;
Masahiro Watanabe, Hitachi, JP;
Hisaaki Takabayashi, Nabari, JP;
Yoshikazu Hirose, Matsudo, JP;
Keiko Abe, Mito, JP;
Yasuhiro Kobayashi, Hitachinaka, JP;
Masahiro Watanabe, Hitachi, JP;
Hisaaki Takabayashi, Nabari, JP;
Yoshikazu Hirose, Matsudo, JP;
Hitachi Chemical Company, Ltd., Tokyo, JP;
Abstract
An accumulator and state of charge evaluation method for preparing, during charging and discharging, models for each of deterioration degrees, each representing a relationship between terminal voltage, current and state of charge, for selecting respective models for the times during charging and discharging in accordance with a total charging/discharging amount (Ah), a deterioration degree or an elapsed time of an operation of the accumulator, for further estimating state of charge from current accumulation, and for determining a final state of charge from estimated states of charge including a present state of charge estimated from the models for the times during charging and discharging of the accumulator, while using a time or a total charging/discharging amount (Ah) from a time of full-charging by equal charging of the accumulator up to present time to determine the final state of charge from the plurality of states of charge.