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:
Dec. 13, 2016
Filed:
May. 20, 2014
Denso Corporation, Kariya, Aichi-pref., JP;
Hirotsugu Katou, Hekinan, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
A control apparatus is used for a power-supply apparatus with power-supply systems connected in parallel between a pair of power wires connected to a load. Each power-supply system has a series circuit of a battery and a contact of a relay. When the control apparatus determines that at least one relay suffers from a contact welding, the control apparatus performs a battery charge/discharge process to charge/discharge the batteries through the pair of power wires by turning ON one of possible relays while turning OFF the others of the possible relays. The possible relay is defined as having a possibility of suffering from the contact welding. After the battery charge/discharge process, the control apparatus identifies which possible relay actually suffers from the contact welding based on a change in a state of the battery connected in series with the contact of each possible relay.