公开(公告)号：US20180088181A1

公开(公告)日：2018-03-29

申请号：US15830782

申请日：2017-12-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianping Jiang ,  Guanghui Zhang ,  Xiaosheng Zeng ,  Laisuo Su ,  Jianbo Zhang ,  Zhe Li

IPC: G01R31/36 ,  H01M10/48

Abstract: A method for detecting a battery state of health includes a current and a voltage are measured twice in a period of time; corresponding model algorithms are selected according to the measured current values; corresponding battery open circuit voltage values and battery state of charge values at a start time and an end time of the period are obtained based on the model algorithms; a battery capacity difference that indicates a present battery retention capacity and a battery capacity difference that indicates a future battery retention capacity are calculated; and a battery state of health value is calculated when impact of a measured battery temperature value is considered.

公开(公告)号：US10989762B2

公开(公告)日：2021-04-27

申请号：US16121767

申请日：2018-09-05

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jianping Jiang ,  Laisuo Su ,  Jianbo Zhang

IPC: G01R31/392 ,  G01R31/374 ,  G01R31/36 ,  G01R31/3835

Abstract: This application provides a method for detecting a battery state of health. In the method, for a battery that does not supply power to a load within a time period, a detected unit is determined; an open-circuit voltage and a temperature of the detected unit are collected; a battery state of charge value and a loss capacity of the detected unit are obtained by means of calculation; and a battery state of health value of the detected unit is obtained by means of calculation according to a ratio of the loss capacity of the detected unit to an original capacity. This application further provides an apparatus for detecting a battery state of health. By means of technical solutions provided in this application, a deterioration degree of battery performance can be accurately monitored, and impact on a service is avoided.

公开(公告)号：US20180364312A1

公开(公告)日：2018-12-20

申请号：US16121767

申请日：2018-09-05

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jianping Jiang ,  Laisuo Su ,  Jianbo Zhang

IPC: G01R31/36

Abstract: This application provides a method for detecting a battery state of health. In the method, for a battery that does not supply power to a load within a time period, a detected unit is determined; an open-circuit voltage and a temperature of the detected unit are collected; a battery state of charge value and a loss capacity of the detected unit are obtained by means of calculation; and a battery state of health value of the detected unit is obtained by means of calculation according to a ratio of the loss capacity of the detected unit to an original capacity. This application further provides an apparatus for detecting a battery state of health. By means of technical solutions provided in this application, a deterioration degree of battery performance can be accurately monitored, and impact on a service is avoided.

公开(公告)号：US10712395B2

公开(公告)日：2020-07-14

申请号：US15830782

申请日：2017-12-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianping Jiang ,  Guanghui Zhang ,  Xiaosheng Zeng ,  Laisuo Su ,  Jianbo Zhang ,  Zhe Li

IPC: G01R31/392 ,  G01R31/3842 ,  H01M10/48 ,  G01R31/36 ,  G01R31/367 ,  G01R31/3828

Abstract: A method for detecting a battery state of health includes a current and a voltage are measured twice in a period of time; corresponding model algorithms are selected according to the measured current values; corresponding battery open circuit voltage values and battery state of charge values at a start time and an end time of the period are obtained based on the model algorithms; a battery capacity difference that indicates a present battery retention capacity and a battery capacity difference that indicates a future battery retention capacity are calculated; and a battery state of health value is calculated when impact of a measured battery temperature value is considered.