公开(公告)号：US09893562B2

公开(公告)日：2018-02-13

申请号：US14949100

申请日：2015-11-23

Applicant: Jae Jin Lee ,  Kyo Beum Lee

Inventor： Jae Jin Lee ,  Kyo Beum Lee

IPC: H02J9/06 ,  H05B37/00 ,  H02J7/00

CPC classification number: H02J9/061 ,  H02J7/0029 ,  H02J2007/004 ,  H05B33/0815 ,  H05B33/0842 ,  H05B37/00 ,  H05B37/0227

Abstract: Disclosed herein is a direct current (DC) uninterruptible power supply system. The DC uninterruptible power supply system is connected to a DC power conversion system converting prevailing alternating current (AC) power into DC power, supplies the DC power to a load, charges an internal auxiliary power supply device with the DC power, and continuously supplies power to the load from the auxiliary power supply device while cutting off an electric connection with the DC power conversion system when the DC power conversion system short-circuits due to a leakage current or damage thereof or is disconnected.

公开(公告)号：US10193379B2

公开(公告)日：2019-01-29

申请号：US14893374

申请日：2014-11-05

Applicant: Jae Jin Lee

Inventor： Jae Jin Lee ,  Sung Wan Ro ,  Kyo Beum Lee

IPC: H02J9/06

Abstract: Disclosed is a direct current uninterruptible power supply system. The direct current uninterruptible power supply system according to an embodiment of the present invention is electrically connected to a direct current power converter for converting commercial alternating current power to direct current power, in order to: supply the direct current power to a load and charge an auxiliary power supply device therein with the direct current power. In the case of a short circuit of the direct current power converter due to a current leakage or breakage of the direct current power converter, or if the direct current power converter is disconnected, the direct current uninterruptible power supply system enables the auxiliary power supply device to constantly supply power to the load while completely blocking the electrical connection to the direct current power converter.

公开(公告)号：US09685821B2

公开(公告)日：2017-06-20

申请号：US14435532

申请日：2013-10-08

Applicant: Jae Jin Lee

Inventor： Jae Jin Lee ,  Kyo Beum Lee

IPC: H02J9/00 ,  H02J9/06 ,  H02J7/00

CPC classification number: H02J9/061 ,  H02J7/0068

Abstract: Provided is an uninterruptible direct current (DC) power supply system, which includes a first connection unit electrically connected to a DC power conversion system which converts prevailing AC power into the DC power, a second connection unit which is electrically connected to the load and supplies the DC power to the load, an auxiliary power supply charged by the DC power, and an uninterruptible control unit which supplies the DC power supplied from the DC power conversion system normally connected to the first connection unit to the load through the second connection unit, charges the auxiliary power supply, and controls power to be continuously supplied to the load while perfectly cutting off electrical connection between the DC power conversion system and the auxiliary power supply when the DC power conversion system is disconnected from the first connection unit, is damaged, or short-circuits.