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. 25, 2025
Filed:
Feb. 01, 2023
Volvo Penta Corporation, Gothenburg, SE;
Emil Olsmo, Torslanda, SE;
Volvo Penta Corporation, Gothenburg, SE;
Abstract
A safety circuit for a high-voltage electrical traction system comprising a plurality of electric machines. The safety circuit comprises a primary high voltage interlock loop (HVIL) circuit configured to be connected to a battery and for each of the plurality of electric machines, a secondary high voltage interlock loop (HVIL) circuit, wherein each secondary HVIL-circuit is controlled by a corresponding switch unit configured to break the secondary HVIL-circuit if a fault in a corresponding electric machine is detected, and wherein the switch unit comprises a trigger device configured to break the primary HVIL-circuit if the switch unit is opened.