Power feeding device and power receiving device for contactless power transmission

Abstract

A power feeding device includes a cover, a primary coil covered with the cover, and a plurality of temperature-sensitive detectors provided in the cover, which detect the temperature of an object on the cover. When the distance between adjacent temperature-sensitive detectors is denoted by W [m], the temperature of the object to be subjected to thermometry by the temperature-sensitive detectors is denoted by T0 [K], the temperature to be detected by the temperature-sensitive detectors is denoted by T1 [K], and the thermal conductivity of the cover is denoted by λ [W/(m·K)], W satisfies the following equation W ≤ 25 × 10 - 3 - 17.2 × λ ln ⁡ ( 20 T 0 - T 1 ) × 10 - 3 . ( 1 ) This allows the power feeding device to accurately detect the temperature of the object on the cover.

Dependencies are inferred from the claim text.