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:
Feb. 03, 1998
Filed:
Jan. 10, 1997
Jeffrey A Rose, Park City, UT (US);
Joseph A Cates, Lexington, KY (US);
Electro Dynamics, Inc., Park City, UT (US);
Abstract
A disengageable electrical capacitive coupling for transmitting high frequency AC electrical current is provided. In an electric vehicle charging system, dual first connectors form the vehicle inlet, and mating dual second connectors form the coupler. A dielectric material, such as barium titanium oxide, is positioned between the connectors to form capacitors. A holder secures the connectors together with the dielectric material in between. The interface formed is sufficient for establishing a highly efficient, compact electrostatic field for transmitting the current. Provision is made in the holder for easily disengaging the connectors once the charging cycle is complete. When utilized as a charging system, the capacitive charge coupling is connected between a high frequency drive unit on the charger side and a DC power conversion unit on the energy storage side, such as in an electric vehicle. In an alternative embodiment, the connectors comprise mating multiple section conductive plates formed of a spring metal core with a flexible dielectric coating, such as polypropylene. Variation of the various parameters of the charge coupling is utilized to enhance the power transfer capability.