公开(公告)号：US20240012063A1

公开(公告)日：2024-01-11

申请号：US17889440

申请日：2022-08-17

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jingyuan LIU ,  Dave G. RICH ,  Manjit SWAMI ,  Charles W. WAMPLER, II ,  Dewen KONG

IPC: G01R31/392 ,  H02J7/00 ,  G01R31/3835 ,  B60L58/12 ,  B60L58/16 ,  B60L53/00

CPC classification number: G01R31/392 ,  H02J7/0048 ,  H02J7/005 ,  H02J7/00712 ,  H02J7/0068 ,  G01R31/3835 ,  B60L58/12 ,  B60L58/16 ,  B60L53/00

Abstract: A state of health (SOH) based control system includes: a memory configured to store an algorithm including instructions for determining a SOH of a power source; and a control module configured to receive a voltage signal indicating a voltage of the power source and execute the instructions. The instructions include: determining a state of charge (SOC) of the power source; generating a differential signal based on a change in the voltage and a change in the state of charge; determining an inflection point and an end of charge point of the differential signal; determining the SOH of the power source based on the inflection point and the end of charge point; and performing at least one of a control operation or a countermeasure based on the SOH.