公开(公告)号：US11774502B2

公开(公告)日：2023-10-03

申请号：US17587165

申请日：2022-01-28

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sangbin Moon ,  Hyoungseok Oh ,  Sungwoo Lee ,  Jungwook Heo

IPC: G01R31/364 ,  G01R31/36 ,  G01R31/3842 ,  G01R31/389

CPC classification number: G01R31/364 ,  G01R31/3648 ,  G01R31/389 ,  G01R31/3842

Abstract: A battery device includes a first battery and a second battery connected in series. An electronic device for determining a state of charge of the battery device includes a sense resistor connected in series to the second battery, and a fuel gauge. The fuel gauge is configured to determine the state of charge of the battery device based on a first terminal voltage of the first battery, a first calculation current of the first battery, a second terminal voltage of the second battery, and a measurement current of the second battery measured through the sense resistor. The fuel gauge calculates a second calculation current of the second battery using a battery parameter of an equivalent circuit model, corrects the battery parameter when a difference between the measurement current and the second calculation current is not less than a threshold value, and calculates the first calculation current using the battery parameter or a corrected battery parameter.

公开(公告)号：US11764671B2

公开(公告)日：2023-09-19

申请号：US17536810

申请日：2021-11-29

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kwang Chan Lee ,  Hyoungseok Oh ,  Hojun Yu ,  Jeongkwang Lee ,  Jungwook Heo

IPC: H02M3/07 ,  H02M3/158 ,  H02M1/00

CPC classification number: H02M3/07 ,  H02M1/0095 ,  H02M1/009 ,  H02M3/158 ,  H02M3/1582

Abstract: A voltage converter including first to fourth switches between a first voltage node and ground, fifth to eighth switches between the first voltage node and the ground, a first floating capacitor between a first node between the first and second switches and a second node between the third and fourth switches, a second floating capacitor between a third node between the fifth and sixth switches and a fourth node between the seventh and eighth switches, a ninth switch between a second voltage node and a center node, a first inductor between the second node and a third voltage node, a center capacitor between the center node and the ground, a tenth switch between the second voltage node and the third voltage node, a first capacitor between the third voltage node and the ground, and a second capacitor between the second voltage node and the ground may be provided.