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:
Aug. 27, 2019
Filed:
Feb. 03, 2016
Hitachi Automotive Systems, Ltd., Hitachinaka-shi, Ibaraki, JP;
Akihiko Kudo, Hitachinaka, JP;
Tomonori Kanai, Hitachinaka, JP;
Tomoyuki Arima, Hitachinaka, JP;
Akiko Tsukamoto, Hitachinaka, JP;
HITACHI AUTOMOTIVE SYSTEMS, LTD., Hitachinaka-Shi, Ibaraki, JP;
Abstract
An object is to achieve management control of an assembled battery using an accurate measured value of a cell voltage. A battery system monitoring apparatusthat monitors and controls a battery system includes battery monitoring circuitsprovided for respective cell groups. Each of the battery monitoring circuitsincludes a cell voltage measurement modulethat is connected with two electrodes of respective single battery cellsof a corresponding cell groupvia voltage detection linesand that measures a cell voltage of each of the single battery cellsat each of predetermined timings. An RC filteris connected with the voltage detection lines. The RC filterincludes resistors and capacitors. The cell voltage measurement moduleextends intervals at which the cell voltage is to be measured when a stored charge amount in the capacitor in the RC filterchanges.