The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 12, 2026
Filed:
Apr. 10, 2024
Infineon Technologies Ag, Neubiberg, DE;
Guenter Hofer, St. Oswald, AT;
Guenter Schwarzberger, Reitmehring, DE;
Infineon Technologies AG, Neubiberg, DE;
Abstract
A driver circuit is configured to control an ON/OFF state of a semiconductor power switch circuit, wherein the semiconductor power switch circuit is configured to connect a plurality of battery cells to a DC link capacitor associated with an electric motor. The driver circuit is configured to: control the semiconductor power switch circuit to cause the plurality of battery cells to charge the DC link capacitor; and control the semiconductor power switch circuit to generate and deliver an excitation current from the plurality of battery cells, wherein the excitation current is defined for a complex battery impedance measurement operation. The DC link capacitor is positioned in parallel with the electric motor. The excitation current comprises a periodic signal that passes from the semiconductor power switch circuit, through the DC link capacitor, and back to the plurality of battery cells.