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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.:

US 9627999 B1

PDFFull Text
Date of Patent:
Apr. 18, 2017

Filed:

Nov. 07, 2012

Power supply device

Applicant:

Volvo Truck Corporation, Gothenburg, SE;

Inventors:

Yoshiaki Yamada, Saitama, JP;

Takayuki Tsuchiya, Saitama, JP;

Kunihiko Hikiri, Saitama, JP;

Koichi Itani, Saitama, JP;

Hiroshi Toyama, Saitama, JP;

Noriaki Miyake, Saitama, JP;

Assignee:

Volvo Truck Corporation, Gothenburg, SE;

Attorneys:

Laurence A. Greenberg

Werner H. Stemer

Ralph E. Locher

Primary Examiner:

Paul Ip

Int. Cl.
CPC ...
H02P 1/00 (2006.01); H02P 4/00 (2006.01); H02J 7/00 (2006.01); B60L 11/00 (2006.01); B60L 11/14 (2006.01); B60L 11/18 (2006.01); B60L 7/16 (2006.01); H02J 7/34 (2006.01); H02P 3/14 (2006.01); B60L 15/20 (2006.01); H02M 7/5387 (2007.01); H02M 1/00 (2006.01); H02M 3/156 (2006.01);
U.S. Cl.
CPC ...
H02P 4/00 (2013.01); B60L 7/16 (2013.01); B60L 11/005 (2013.01); B60L 11/14 (2013.01); B60L 11/1803 (2013.01); B60L 11/1861 (2013.01); B60L 11/1868 (2013.01); B60L 15/2045 (2013.01); H02J 7/0063 (2013.01); H02J 7/345 (2013.01); H02P 3/14 (2013.01); B60L 2210/10 (2013.01); B60L 2210/14 (2013.01); B60L 2210/40 (2013.01); B60L 2240/547 (2013.01); H02M 3/156 (2013.01); H02M 7/5387 (2013.01); H02M 2001/007 (2013.01); Y02T 10/70 (2013.01); Y02T 10/7005 (2013.01); Y02T 10/7022 (2013.01); Y02T 10/7044 (2013.01); Y02T 10/7066 (2013.01); Y02T 10/7077 (2013.01); Y02T 10/7225 (2013.01); Y02T 10/7241 (2013.01);
Abstract

A power supply device for supplying power to a load by combining a secondary battery and a capacitor includes a bypass switch which enables power to be directly supplied to the load from the capacitor by being switched to a connected state when a voltage of the capacitor is a voltage capable of driving the load, and a first DC-DC converter which enables the voltage of the capacitor to be stepped up and supplied to the load when the voltage of the capacitor drops below a minimum voltage capable of driving the load.

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