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:
Jan. 14, 1997
Filed:
Dec. 02, 1994
Eddie Y Yeow, San Gabriel, CA (US);
Ray G Radys, Santa Monica, CA (US);
George R Woody, Redondo Beach, CA (US);
Sergio Ramos, Wilmington, CA (US);
Delco Electronics Corp., Kokomo, IN (US);
Abstract
An inductive battery charging system that uses heat conducting heat exchangers that shape electromagnetic fields produced by the windings of the charging system. The field shaping provided by the heat exchangers of the present invention improves the power handling capacity of the system. The charging system includes a charge probe that includes a primary winding of a transformer and a charge port that includes secondary windings of the transformer. The heat exchangers are heat sinks that are inserted between or are disposed adjacent turns of the windings and are used to remove heat from windings. In the present invention, the heat exchangers are also used to shape the leakage flux near the edges of the windings in such a manner that AC losses in the windings are considerably reduced. The present invention may be used to increase the inductive charging capacity of an electric vehicle battery pack to on the order of 120 KW and beyond. The present invention eliminates overheating in the at the interface between the transformer windings at a 50 KW level or higher. The present invention may be used with almost any magnetic device, such as a transformer or inductor that uses foil windings or solid wire conductors.