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:
May. 23, 2017
Filed:
Apr. 22, 2015
Toyota Jidosha Kabushiki Kaisha, Toyota-shi Aichi-ken, JP;
Shohei Oi, Toyota, JP;
Tomoko Oba, Nagoya, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
A power conversion circuit includes first to fourth switching elements connected in series between ground and high voltage electrical paths, a first reactor, a main battery, a second reactor, a sub battery, a high voltage sensor for detecting a high voltage VH between the ground and high voltage electrical paths, and a controller. Upon issuance of an instruction for turning off all of the first to fourth switching elements, the controller determines that the third switching element is experiencing an ON failure when the high voltage VH is equal to the sum of a battery voltage VBof the main battery and a battery voltage VBof the sub battery, to thereby allow electrical power to be transferred between the batteries and a load even in the event of occurrence of the ON failure in the switching element.