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:
Dec. 14, 2010
Filed:
May. 08, 2008
Miguel Angel Acena, Valls, ES;
Jordi Escoda, Valls, ES;
Miguel Angel Acena, Valls, ES;
Jordi Escoda, Valls, ES;
Lear Corporation, Southfield, MI (US);
Abstract
A ground-fault detection system and method for detecting loss of electrical isolation in a vehicle or other system that uses a high voltage (HV) power net. The loss of electrical isolation may be determined by charging HV capacitors, then connecting them at different times between the power-net HV wires and the ground (or vehicle chassis), and measuring their remaining charge after a fixed period. The HV system can be regarded as properly isolated from ground or not as a function of the energy lost by the aforementioned capacitors during their connection to the HV power net.
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