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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 10333398 B1

PDFFull Text
Date of Patent:
Jun. 25, 2019

Filed:

Jul. 20, 2016

Charging apparatus

Applicant:

Hitachi Automotive Systems, Ltd., Hitachinaka-shi, Ibaraki, JP;

Inventors:

Naoya Takahashi, Hitachi, JP;

Hiroyuki Shoji, Hitachinaka, JP;

Takae Shimada, Tokyo, JP;

Assignee:

Hitachi Automotive Systems, Ltd., Hitachinaka-shi, JP;

Attorney:

Crowell & Moring LLP

Primary Examiner:

Robert J Grant

Int. Cl.
CPC ...
H02J 7/00 (2006.01); H02J 7/02 (2016.01); H02M 3/155 (2006.01); H02M 1/36 (2007.01); H02M 3/337 (2006.01); H02J 7/34 (2006.01); H02M 3/28 (2006.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
H02M 3/155 (2013.01); H02J 7/007 (2013.01); H02J 7/0022 (2013.01); H02J 7/022 (2013.01); H02J 7/34 (2013.01); H02M 1/36 (2013.01); H02M 3/28 (2013.01); H02M 3/3376 (2013.01); H02M 2001/007 (2013.01); H02M 2001/008 (2013.01); H02M 2001/0058 (2013.01); Y02B 40/90 (2013.01); Y02B 70/1433 (2013.01); Y02B 70/1491 (2013.01); Y02T 10/7055 (2013.01);
Abstract

There is a disadvantage that a loss generated in a charging apparatus becomes large. It is determined whether a link voltage Vo is equal to or higher than a predetermined value Va. If the link voltage Vo is less than the predetermined value Va, a control unit activates a DC-DC converter in a boosting operation. That is, by turning on/off the switching element, the voltage boosted from the storage battery is supplied to the link voltage Vo. The control unit determines whether the link voltage Vo is equal to or higher than the predetermined value Va. If the link voltage Vo is less than the predetermined value Va, the operation is continued. When the link voltage Vo rises due to the boosting operation of the DC-DC converter and becomes equal to or higher than the predetermined value Va, the boosting operation of the DC-DC converter is stopped.

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