公开(公告)号：US11489442B2

公开(公告)日：2022-11-01

申请号：US16966684

申请日：2019-02-14

申请人： Samsung Electronics Co., Ltd.

发明人： Kyusik Choi ,  Yunhui Han

IPC分类号： H02M3/07 ,  G11C5/14 ,  H02M1/00

摘要： Various embodiments according to the present invention relate to a power conversion device and method, the device comprising: a converter; a capacitor unit including a plurality of capacitors for storing input voltage input thereto; a switch unit connected to the capacitor unit and including a plurality of switches for selectively connecting at least one capacitor among the plurality of capacitors to the converter; and a controller connected to the capacitor unit and the switch unit, wherein the controller determines at least one capacitor satisfying a specified condition, among the plurality of capacitors, sets at least one switch among the plurality of switches to be turned on, the at least one switch corresponding to the at least one capacitor, and sets at least another switch among the plurality of switches except for the at least one switch, to be turned off, so that the at least one capacitor and the converter are electrically connected and configured to allow at least partial voltage of the input voltage, stored in the at least one capacitor, to be supplied to the converter. Therefore, a power conversion device, disposed on a circuit on which the plurality of capacitors (or cells) is connected in series to a power supply unit, can establish selective connection by using the switch unit, so as to adjust input voltage and provide the adjusted input voltage to the converter, and can reduce switching loss of the power conversion device. Various other embodiments are possible.

公开(公告)号：US11296518B2

公开(公告)日：2022-04-05

申请号：US16834539

申请日：2020-03-30

申请人： Samsung Electronics Co., Ltd.

发明人： Seho Park ,  Kisun Lee ,  Kyusik Choi

IPC分类号： H02J7/00 ,  H02J7/02 ,  H01M10/42 ,  H01M10/46 ,  H01M10/44

摘要： An electronic device includes a housing, a display exposed through one surface of the housing, at least one ground member, a first battery disposed in the housing and including a first anode and a first cathode, a second battery disposed in the housing and including a second anode and a second cathode electrically connected with the at least one ground member, a charging circuit electrically connected with the first battery and the second battery, a charging interface electrically connected with the charging circuit, and a power management integrated circuit electrically connected with the charging interface and the charging circuit and managing power supplied to the electronic device. When an external power source is connected through the charging interface, the charging circuit connects the first battery and the second battery in series during a first time period and connects the first battery and the second battery in parallel during a second time period.

公开(公告)号：US10461623B2

公开(公告)日：2019-10-29

申请号：US15984647

申请日：2018-05-21

申请人： SAMSUNG ELECTRONICS CO., LTD.

发明人： Kyusik Choi ,  Chulwoo Park ,  Yunhui Han

IPC分类号： H02M1/00 ,  H02M1/088 ,  H02M3/07 ,  G06F1/26 ,  H02M3/155

摘要： The present disclosure relates to a voltage conversion circuit including: a plurality of switched capacitors; and a buck converter configured to be alternately applied with a first voltage and a second voltage output from each of two switched capacitors selected from the plurality of switched capacitors and to convert the applied first voltage or second voltage into an output voltage and to provide the output voltage. According to an embodiment, output terminals of each of the plurality of switched capacitors may be selectively electrically connected to an input terminal of the buck converter.