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：US11243255B2

公开(公告)日：2022-02-08

申请号：US16705467

申请日：2019-12-06

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

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

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.