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. 07, 2017
Filed:
Sep. 10, 2012
Akiko Fukute, Kanagawa, JP;
Ryosuke Enomoto, Kanagawa, JP;
Junko Kimura, Kanagawa, JP;
Toshitaka Ukai, Kanagawa, JP;
Akiko Fukute, Kanagawa, JP;
Ryosuke Enomoto, Kanagawa, JP;
Junko Kimura, Kanagawa, JP;
Toshitaka Ukai, Kanagawa, JP;
Renesas Electronics Corporation, Tokyo, JP;
Abstract
In battery voltage monitoring ICs for measuring voltages of unit cells of an assembled battery, communication with a system control unit is realized in consideration of fail-safe. The system control unit and the battery voltage monitoring ICs are coupled to each other by a communication path using a daisy chain. Each battery voltage monitoring IC has a placement setting pin designating, by a binary code, a unit cell group to which the IC is coupled, in the unit cell groups. When it is detected that the Hamming distance between the code indicative of coupling to a group of the highest potential or a group of the lowest potential and a state actually set in the placement setting pin is 1, some failure such as line disconnection, short-circuit, or the like in the placement setting pins is detected, and the communication path is interrupted.