公开(公告)号：US12081056B2

公开(公告)日：2024-09-03

申请号：US18202221

申请日：2023-05-25

申请人： O2Micro Inc.

发明人： Yingguo Zhang ,  Guoyan Qiao ,  Fu-Jen Hsieh ,  Chia-Ming Chang ,  Chih-Chung Chou ,  Hua-Yi Wang

IPC分类号： H02J7/00

CPC分类号： H02J7/0071 ,  H02J7/0013 ,  H02J7/0036 ,  H02J7/0047

摘要： A controller for managing a battery pack includes: a detection terminal, for transmitting an enable signal when values of battery parameters for the battery pack satisfy a sleep condition, where the enable signal enables the detection circuit to detect whether the battery pack is connected to a load and whether the battery pack is connected to the charger; and a receiving terminal, for receiving a detection result transmitted by the detection circuit. The detection result indicates whether the battery pack is connected to at least one of the load and charger. The controller controls the battery pack to enter a sleep mode of the sleep modes based on the detection result. The controller also includes a control terminal, for transmitting a control signal to control an on/off state of a charging switch and/or a discharging switch. The control signal is generated by the controller based on the detection result.

公开(公告)号：US12055591B2

公开(公告)日：2024-08-06

申请号：US17182087

申请日：2021-02-22

申请人： O2Micro, Inc.

发明人： Chih-Chung Chou ,  Guoxing Li ,  Hua-Yi Wang ,  Fu-Jen Hsieh ,  Lian Chen

IPC分类号： G01R31/3842 ,  G01R31/367 ,  H02J7/00

CPC分类号： G01R31/3842 ,  G01R31/367 ,  H02J7/0048

摘要： In a battery management controller, analog-to-digital conversion circuitry converts analog signals, indicative of a battery voltage, a battery current, and a battery temperature, to digital signals. A memory stores a remaining-capacity lookup table that includes multiple groups of data. Each group of data includes a voltage, a current, a temperature, and a parameter associated with a remaining capacity corresponding to the voltage, the current and the temperature. A processor searches the lookup table for a current parameter value and an end-of-discharge parameter value based on the digital signals, and determines a full available charge capacity of the battery based on the current parameter value and the end-of-discharge parameter value. The processor also counts the number of charges flowing through the battery based on a battery current. The processor further determines an available state of charge of the battery according to the full available charge capacity and the number of charges.

公开(公告)号：US11699915B2

公开(公告)日：2023-07-11

申请号：US17527018

申请日：2021-11-15

申请人： O2Micro, Inc.

发明人： Yingguo Zhang ,  Guoyan Qiao ,  Fu-Jen Hsieh ,  Chia-Ming Chang ,  Chih-Chung Chou ,  Hua-Yi Wang

IPC分类号： H02J7/00

CPC分类号： H02J7/0071 ,  H02J7/0013 ,  H02J7/0036 ,  H02J7/0047

摘要： A controller for managing a battery pack includes: a detection terminal, for transmitting an enable signal when values of battery parameters for the battery pack satisfy a sleep condition, where the enable signal enables the detection circuit to detect whether the battery pack is connected to a load and whether the battery pack is connected to the charger; and a receiving terminal, for receiving a detection result transmitted by the detection circuit. The detection result indicates whether the battery pack is connected to at least one of the load and charger. The controller controls the battery pack to enter a sleep mode of the sleep modes based on the detection result. The controller also includes a control terminal, for transmitting a control signal to control an on/off state of a charging switch and/or a discharging switch. The control signal is generated by the controller based on the detection result.

公开(公告)号：US11211812B2

公开(公告)日：2021-12-28

申请号：US16799648

申请日：2020-02-24

申请人： O2Micro, Inc.

发明人： Yingguo Zhang ,  Guoyan Qiao ,  Fu-Jen Hsieh ,  Chia-Ming Chang ,  Chih-Chung Chou ,  Hua-Yi Wang

IPC分类号： H02J7/00

摘要： A controller for managing a battery pack includes: a detection terminal, for transmitting an enable signal when values of battery parameters for the battery pack satisfy a sleep condition, where the enable signal enables the detection circuit to detect whether the battery pack is connected to a load and whether the battery pack is connected to the charger; and a receiving terminal, for receiving a detection result transmitted by the detection circuit. The detection result indicates whether the battery pack is connected to at least one of the load and charger. The controller controls the battery pack to enter a sleep mode of the sleep modes based on the detection result. The controller also includes a control terminal, for transmitting a control signal to control an on/off state of a charging switch and/or a discharging switch. The control signal is generated by the controller based on the detection result.