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:
Nov. 04, 2025
Filed:
Dec. 15, 2023
Seg Automotive Germany Gmbh, Stuttgart, DE;
Kaveh Haghverdi, Stuttgart, DE;
Murugaperumal Devaraja, Stuttgart, DE;
Nima Saadat, Stuttgart, DE;
Vivek Tailor, Stuttgart, DE;
Timm Lohmann, Stuttgart, DE;
SEG Automotive Germany GmbH, Stuttgart, DE;
Abstract
An overvoltage protection circuit for an electric machine has a series connection of at least two overvoltage protection units, each having a switching unit connected in parallel. Each overvoltage protection unit includes at least one overvoltage protection component that limits a voltage, dropping across this component, to a component voltage limit. At least one of the overvoltage protection units includes at least two overvoltage protection components. A voltage tap is provided between two of overvoltage protection components. A method of checking the overvoltage protection circuit includes detecting a voltage present at the overvoltage protection circuit, switching the switching units into different switching configurations and determining a measured value of a voltage present at the voltage tap in each of the switching configurations, comparing the measured values in each case to an associated comparative value, and determining the functionality of the overvoltage protection circuit based on comparison result.