Omnidirectional inductive wireless charging of a 3D receiver cube inside a box

Sergkei Kamotesov (1) , Philippe Lombard (2) , Vincent Semet (2) , Bruno Allard (2) , Mael Moguedet (1) , Michel Cabrera (2)

1 S2P - Smart plastic products
2 EE - Ampère, Département Energie Electrique

Omnidirectional inductive wireless charging of a 6×6×6 cm3 3D receiver cube with 6 planar coils inside a 47×47×47 cm 3 box with 4 planar emitting coils is studied. The power delivered to the cube in the central position of the box is in the 1 W-2.4 W range with 6-7% transfer efficiency. In this position , the power is insensitive to the pitch angular orientation. When moving the 3D receiver cube toward the corners of the box, there is no sudden drop of transmitted power. However, the delivered power near the corners increases or decreases in an acceptable range depending on the orientations of the magnetic field of the emitters. Perspectives of this work, when replacing the manufacturing of coils based on PCBs technology by 3D Molded Interconnect Device technology, are briefly discussed.

Mots clés: wireless power transmission (WPT); molded interconnect device; mobile receiver; magnetic induction; omnidirectional

Domaines: Electronique

Sergkei Kamotesov, Philippe Lombard, Vincent Semet, Bruno Allard, Mael Moguedet, et al.. Omnidirectional inductive wireless charging of a 3D receiver cube inside a box. 2018 IEEE WPTC, Jun 2018, Montreal, Canada. ⟨10.1109/WPT.2018.8639240⟩. ⟨hal-02153087⟩