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:
Jul. 18, 2017
Filed:
Oct. 01, 2012
Shin-kobe Electric Machinery Co., Ltd., Tokyo, JP;
Keiko Abe, Tokyo, JP;
Hideki Inoue, Tokyo, JP;
Toshiyuki Sawa, Tokyo, JP;
Masahiro Watanabe, Tokyo, JP;
Hisaaki Takabayashi, Tokyo, JP;
Ichiro Shimoura, Tokyo, JP;
Keisuke Fukuhara, Tokyo, JP;
HITACHI CHEMICAL COMPANY, LTD., Tokyo, JP;
Abstract
This invention reduces degradation of respective lead storage batteries making up a lead storage battery bank and extends the longevity of the lead storage batteries. A lead storage battery system includes an individual battery state measurement unitthat measures current, voltage, temperature etc. of individual lead storage batteriesor lead storage battery modulesmaking up a lead storage battery bank, a state-of-charge model storage unitthat accumulates state-of-charge models representing a correlation between the battery states and a state of charge, a state-of-charge estimation unitthat estimates individual states of charge of the respective lead storage batteriesor lead storage battery modulesfrom the state-of-charge models and the battery states, a state-of-charge variation range determination unitthat calculates a state-of-charge maximum value and a state-of-charge minimum value, and an equalization-charging management unitthat controls performance of an equalization charge on the lead storage battery bank. The equalization-charging management unitperforms the equalization charge so that the state-of-charge maximum value falls within a range lower than an overcharge region and the state-of-charge minimum value falls within a range higher than a sulfation region.