公开(公告)号：US20180246173A1

公开(公告)日：2018-08-30

申请号：US15444728

申请日：2017-02-28

Applicant: HONEYWELL INTERNATIONAL INC.

Inventor： Harmohan N. Singh ,  Jeevan Reddy Neelam ,  Madasamy Shunmugavel

IPC: G01R31/36

CPC classification number: G01R31/367 ,  G01R31/3828 ,  G01R31/389 ,  G01R31/392

Abstract: Methods and apparatus for online estimation of battery model parameters for determining a State-of-Charge (SoC) and a State-of-Health (SoH) of a battery are provided. A mathematical approach using voltage, current, and temperature samples at programmable intervals to estimate RC battery model parameters is utilized, reducing computational requirements to enable real-time estimation of the SoC in an online environment. The SoC estimation utilizes an optimal estimator with an Extended Kalman Filter (EKF) to reduce sensitivity to process noise and measurement errors. After a discharge or charge operation, the SoH can also be estimated and updated as necessary.