A battery electric system includes a battery, sensor suite, and controller. The sensor suite includes a current sensor, voltage sensor, and temperature sensor. The controller is operable for determining an estimated open circuit voltage of the battery at different time points using a current signal and a voltage signal from the current and voltage sensors, and an equivalent circuit model (ECM). The controller determines an ECM-based state of charge (SOC) of the battery at the different time points, via a calibrated SOC map, using the open circuit voltage and temperature, and calculates a sensor gain value using the ECM-based SOC and a coulomb counting-based SOC, both at the different time points. A control action is executed with respect to the battery when the sensor gain value exceeds a predetermined gain fault threshold, including generating a fault notification signal indicative of a fault of the current sensor.


    Access

    Download


    Export, share and cite



    Title :

    CURRENT SENSOR FAULT DIAGNOSTICS


    Contributors:

    Publication date :

    2023-06-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



    Analytic representation of eddy current sensor data for fault diagnostics

    Teolis, C. / Teolis, A. / Paduano, J. et al. | Tema Archive | 2005


    Analytic Representation of Eddy Current Sensor Data for Fault Diagnostics

    Teolis, C. / Teolis, A. / Paduano, J. et al. | British Library Conference Proceedings | 2005


    Fault diagnostics

    Knirsch, Matthias / Tappe, Matthias / Kesch, Bernd et al. | Springer Verlag | 2014


    Current sensor applications in engine diagnostics systems

    Duffield,T.L. / Honeywell,Micro Switch,US | Automotive engineering | 1987


    Current Sensor Applications in Engine Diagnostics Systems

    Duffield, Teresa L. | SAE Technical Papers | 1987