Contactless battery charging system

Details Contactless battery charging system Contactless battery charging system

H - Electricity

02

J

H02J 7/00 (2006.01) B60L 11/18 (2006.01) H01F 38/14 (2006.01) H02J 7/02 (2006.01)

Patent

CA 2147259

A contactless recharging system (10, 100, 200, 300) and method for recharging a battery storage device (12) onboard an electric vehicle (14, 106, 302) has a primary converter station (20, 102, 202, 304) for converting power from a power source (16) into high frequency power at a selected charging rate. The vehicle has a secondary converter (32, 150, 306) for converting high fre- quency power into DC power to charge the battery. The converters are coupled together by a contactless coupling of a conductor loop (30, 104, 308, 420, 430) and a coupling link (25, 25', 110, 205, 310, 310', 310") forming a coaxial winding transformer. The coupled link and loop carry a communication indicating the selected charging rate of the battery. The link has a magnetic core (40; 50; 112; 318, 320, 322 and 324) and a core-mounted conductor (45; 55; 120; 326, 328, 330 and 332) at least partially sur- rounded by the core. The core-mounted conductor selectively at least partially surrounds a portion of the loop to transfer power therebetween. The core-mounted conductor is coupled to one of the converters, and the loop is coupled to the other converter.

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