CPC H02J 50/12 (2016.02) [H02J 7/02 (2013.01); H02J 50/70 (2016.02); H02J 50/80 (2016.02); H02M 1/0064 (2021.05); H02M 1/44 (2013.01); H04B 5/0037 (2013.01); H04B 5/0087 (2013.01); H04B 15/02 (2013.01)] | 15 Claims |
1. A wireless power transfer device with EMI suppression, comprising:
a power conversion circuit board;
a wireless power transfer coil group assembly comprising a coil; and
an eddy current damper (ECD) with a stable electric potential, the ECD being made of a conductive material,
wherein the power conversion circuit board is connected to the wireless power transfer coil group assembly through a high-frequency power cable; the ECD is close to the wireless power transfer coil group assembly; and the ECD is connected to a low-alternating current (AC) impedance direct current (DC) plane of the power conversion circuit board through a conductor, and
wherein a maximum projection length (D) of the ECD along an axial line of the coil of wireless power transfer coil group assembly is greater than or equal to ⅛ of a maximum projection length (d) of the coil, and a distance (s) between a geometric center of the ECD and the axial line of the coil is less than or equal to the maximum projection length (d) of the coil.
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