Elektrochemisches Impedanzspektroskopiesystem und -Verfahren

Details

Veröffentlichungs-Nr.

EP4741852

Anmeldetag

6. November 2024

Veröffentlichung

13. Mai 2026

Rechtsraum

EP

IPC

G01R31/389, G01R31/396

Abstract

An electrochemical impedance system comprising a vehicle battery, a battery management system (BMS), an excitation power module, and a current sensor. The vehicle battery comprises, in turn, one, two or more battery modules. Each battery module includes a plurality of battery cells. The BMS is configured to control the excitation power module to excite at least the one, two or more battery modules. The current sensor is configured to sense at least electric current of the one, two or more battery modules. The BMS is further configured to sense, determine, or receive voltage of the plurality of battery cells of the one, two or more battery modules, and also receive the electric current of the one, two or more battery modules sensed by the current sensor. In this way, the system of the present disclosure is capable of determining the electrochemical impedance of the vehicle battery. It includes two options: the first option, wherein the BMS is configured to determine the impedance of the plurality of battery cells of the one, two or more battery modules based at least on the electric current and the voltage. Alternatively, the second option, wherein the BMS is configured to send the electric current and the voltage to an external controller configured to determine the impedance of the plurality of battery cells of the one, two or more battery modules based at least on the electric current and the voltage. Additionally, the system may be further configured to generate a battery cell degradation output based at least on the determined impedance. The corresponding method is also provided.

Anmelder

Firma

Ficosa Automotive, S.L.U.

Land

🇪🇸 Spanien

Fachgebiete