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. 27, 1999
Filed:
Mar. 03, 1998
Kunihiko Watanabe, Yokkaichi, JP;
Toshiro Shimada, Osaka, JP;
Abstract
An inductive coupling apparatus charges a storage device in an electric car by means of an external power source apparatus. The inductive coupling apparatus includes a coil unit assembly comprising a primary coil unit (10) and a secondary coil unit (20). The primary and secondary coil units (10, 20) comprise primary and secondary coils (12, 22) and primary and secondary cores (11, 21) for supporting the respective coils (12, 22). Spacers (13, 23) are mounted on arms (11A, 21A) of the cores (11, 21) of the units (10, 20) so that the coils (12, 22) are spaced apart from the peripheral surfaces of the arms (11A, 21A), thereby forming gaps (11D, 21D) between the arms (11A, 21A) and the coils (12, 22) to flow a cooling medium such as air therebetween. When the coils (12, 22) radiate a heat upon charging, the cooling media which flow in the gaps (11D, 21D) absorb the heat from the cores (11, 21). This prevents the heat from being accumulated in spaces between the cores (11, 21) and the coils (12, 22) and suppresses the cores (11, 21) from a rise in temperature.