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:
Nov. 15, 2016
Filed:
Sep. 11, 2012
Sohei Suga, Yokohama, JP;
Tamaki Miura, Yamato, JP;
Yosuke Suzuki, Yokosuka, JP;
Shinsaku Ehara, Fujisawa, JP;
Yoshiaki Nitta, Yokohama, JP;
Masanori Aoyagi, Ebina, JP;
Takayuki Matsuoka, Tokyo, JP;
Sohei Suga, Yokohama, JP;
Tamaki Miura, Yamato, JP;
Yosuke Suzuki, Yokosuka, JP;
Shinsaku Ehara, Fujisawa, JP;
Yoshiaki Nitta, Yokohama, JP;
Masanori Aoyagi, Ebina, JP;
Takayuki Matsuoka, Tokyo, JP;
NISSAN MOTOR CO., LTD., Yokohama-Shi, JP;
Abstract
A control device of a secondary battery has a current detection unit () that detects a charge current to the secondary battery () and a discharge current from the secondary battery (); a calculation unit () that calculates, from the charge current and the discharge current, a charge-discharge efficiency and a discharge-charge efficiency when performing a charge operation and a discharge operation; a deterioration judgment unit () that judges a deterioration state of the secondary battery () from a temporal change rate of the charge-discharge efficiency and a temporal change rate of the discharge-charge efficiency; and a control unit () that sets a charge termination voltage of the secondary battery () in accordance with the deterioration state.