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:
Jul. 17, 2012
Filed:
May. 03, 2007
Method and device for charging an electrical energy storage element, in particular an ultracapacitor
Cedric Leboeuf, Creteil, FR;
Cedric Leboeuf, Creteil, FR;
Valeo Equipements Electriques Moteur, Creteil, FR;
Abstract
The device according to the invention for charging a first electrical energy storage element (), in particular an ultracapacitor, from a second electrical energy storage element (), in particular a battery, is of the type of those comprising a reversible DC/DC converter () arranged between the first and second elements (). In accordance with the invention, the device moreover comprises a stepdown voltage converter () arranged between the DC/DC converter () and the first element (). Advantageously, the device comprises means controlled () so as to charge with a low current the first element () from the second element (), in particular a battery in a poor state of charge, so as to allow the starting of an engine of a motor vehicle even from a battery in a poor state of charge.