Wireless power transmission system
AssigneeMurata Manufacturing Co., Ltd.
InventorsKazuya Kato, Kazuaki Higashibata
Life of this patent
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Abstract
A wireless power transmission system that includes a power transmission apparatus including a passive electrode and an active electrode and a power reception apparatus including passive electrodes and active electrode. When the power reception apparatus is longitudinally placed on the power transmission apparatus, the active electrodes are opposed to each other to cause electric power to be transmitted from the power transmission apparatus to the power reception apparatus. A facing area between the active electrodes in lateral placement of the power reception apparatus on the power transmission apparatus is made substantially equal to a facing area between the active electrodes in the longitudinal placement of the power reception apparatus on the power transmission apparatus.
Claims17
A wireless power transmission system comprising:
- a power transmission apparatus including a first electrode and a voltage generating circuit connected to the first electrode;
- and
- a power reception apparatus including a second electrode, a voltage step-down circuit connected to the second electrode, and a load circuit that receives a voltage output from the voltage step-down circuit as a source voltage,
- wherein, when the power reception apparatus is placed on the power transmission apparatus in a first state where the first electrode opposes the second electrode, electric power is transmitted from the power transmission apparatus to the power reception apparatus, and
- wherein a second facing area between the first electrode and the second electrode when the power reception apparatus is placed on the power transmission apparatus in a second state in which the power reception apparatus is turned by substantially 90 degrees from the first state is substantially equal to a first facing area therebetween when the power reception apparatus is placed on the power transmission apparatus in the first state.
Dependencies are inferred from the claim text.