公开(公告)号：US11181585B2

公开(公告)日：2021-11-23

申请号：US16550586

申请日：2019-08-26

申请人： Dongguan Amperex Technology Limited

发明人： Yuan Yao

IPC分类号： G01R15/00 ,  G01R31/3842 ,  G01R31/392

摘要： A method for detecting state of health of a battery of an electronic device is provided. An initial capacity of the battery is obtained when the battery is charged or discharged with a predetermined current and in a predetermined temperature, and a first State of Charge (SOC) value is calculated when the battery is discharged to a discharge cutoff voltage. An available capacity of the battery is calculated with the predetermined current and in the predetermined temperature based on a maximum capacity of the battery, the first State of Charge value, and a second State of Charge value, and a capacity fade is obtain based on a ratio of the available capacity and the initial capacity. Thus, the state of health is detected based on the capacity fade.

公开(公告)号：US11143708B2

公开(公告)日：2021-10-12

申请号：US16540333

申请日：2019-08-14

申请人： Dongguan Amperex Technology Limited

发明人： Yuan Yao

IPC分类号： G01R31/374 ,  H01M10/48 ,  G01R31/382

摘要： A method for correcting temperature of a rechargeable battery is provided. The temperature T of an adapter board of the rechargeable battery is detected by a sensor of an electronic device, and a temperature difference ΔTi between a cell and the adapter board is calculated during charging or discharging of the battery for a predetermined time period by acquiring a predetermined relationship mode. A cumulative temperature difference ΔT is calculated by accumulating the delta T value ΔTi, and a temperature value Tcell of the cell is calculated through the detected temperature T minus the accumulated temperature difference ΔT. Then, the electronic device can keep normal operation when taking the calculated temperature as the temperature of the cell.