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. 16, 2022
Filed:
Jan. 18, 2019
Hitachi Automotive Systems, Ltd., Hitachinaka, JP;
Tatsumi Yamauchi, Hitachinaka, JP;
Hikaru Miura, Hitachinaka, JP;
Mutsumi Kikuchi, Hitachinaka, JP;
Akihiro Machida, Hitachinaka, JP;
Masahiro Ueda, Hitachinaka, JP;
Kenichiro Tsuru, Hitachinaka, JP;
HITACHI ASTEMO, LTD., Hitachinaka, JP;
Abstract
A battery management unit capable of more reliably turning off a high-voltage relay. A battery management unitincludes a high-voltage relayserving as a switch unit that turns on/off electrical connection between a high-voltage battery, which is a secondary battery, and an external device, and a power source ICserving as a disconnection control unit having a first disconnection processing function of turning off the high-voltage relayat the time of abnormality of the battery management unitand a second disconnection processing function of detecting an abnormality of the first disconnection processing function and turning off the high-voltage relay