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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 12763586 B1

PDFFull Text
Date of Patent:
Oct. 13, 2026

Filed:

Sep. 27, 2021

Power supply device

Applicant:

Fdk Corporation, Tokyo, JP;

Inventors:

Kiyotaka Kumamoto, Tokyo, JP;

Yosuke Saito, Tokyo, JP;

Yasuyuki Katsube, Tokyo, JP;

Kazuhiro Hiwatashi, Tokyo, JP;

Assignee:

FDK CORPORATION, Tokyo, JP;

Attorney:

CANTOR COLBURN LLP

Primary Examiner:

Zixuan Zhou

Int. Cl.
CPC ...
H02J 7/00 (2026.01); H02J 7/24 (2006.01); H02J 7/34 (2006.01); H02J 7/50 (2026.01); H02J 7/54 (2026.01); H02J 7/56 (2026.01); H02J 7/61 (2026.01); H02J 7/63 (2026.01); H02J 7/82 (2026.01); H02J 7/96 (2026.01); H02J 9/06 (2006.01);
U.S. Cl.
CPC ...
H02J 7/34 (2013.01); H02J 7/243 (2020.01); H02J 7/54 (2026.01); H02J 7/56 (2026.01); H02J 7/585 (2026.01); H02J 7/61 (2026.01); H02J 7/63 (2026.01); H02J 7/82 (2026.01); H02J 7/855 (2026.01); H02J 7/96 (2026.01); H02J 9/06 (2013.01);
Abstract

This power supply device includes a battery unit which includes: a first battery pack; a step-up/down circuit for boosting the voltage of an external power supply up to the charge voltage of the battery pack; a first charge circuit; a first discharge circuit for detecting a voltage drop of the external power supply and performing discharge from the battery pack to a load device; and a control circuit for controlling charging and discharging. The discharge circuit has a first discharge switch and a second discharge switch which are connected in series between the battery pack and a power supply line. The first discharge switch is switched on/off by receiving a switching signal from the control circuit, and the second discharge switch is directly switched on/off not via the control circuit on the basis of the voltage of the external power supply.

Find Patent Forward Citations

Kumamoto, Kiyotaka. (2026). Power supply device (U.S. Patent No. 12763586). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12763586

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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