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. 02, 2016
Filed:
Oct. 11, 2013
Mitsubishi Electric Corporation, Chiyoda-ku, Tokyo, JP;
Takayuki Ubukata, Chiyoda-ku, JP;
Nobuhiro Kihara, Chiyoda-ku, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A vehicle power-supply unit has chargeable and rechargeable first power supply and second power supply connected to a voltage transducer at input and output terminals, respectively, and a switch element connected between the output terminal of the voltage transducer and the second power supply. By controlling a rector current flown through a reactor connected to at least two switching elements at one end when the voltage transducer is started, a capacitor connected between the other end of the reactor and the ground is charged, and the switch element is brought in a connection state according to a charging voltage of the capacitor and a voltage value of the second power supply. Consequently, a vehicle power-supply unit can protect the elements by preventing a rush current during a backflow and reverse connection and at start-up.