Wireless power supply system

Abstract

A wireless power supply system includes: a primary power-supplying coil which is a power-supplying coil capable of wirelessly supplying electric power to another power-supplying coil; a first machine that supports the primary power-supplying coil; a secondary power-supplying coil which is a power-supplying coil wirelessly supplied with electric power from another power-supplying coil; and a second machine that can move while supporting the secondary power-supplying coil. The relative positional relationship or the relative attitudinal relationship between the first machine and the second machine can be adjusted corresponding to the movement or change in attitude of the second machine so that a state in which electric power is wirelessly supplied from the primary power-supplying coil to the secondary power-supplying coil is maintained.

1 . A wireless power supply system comprising:
 a primary power-supplying coil which is a power-supplying coil configured to wirelessly supply electric power to another power-supplying coil;   a first machine supporting the primary power-supplying coil;   a secondary power-supplying coil which is a power-supplying coil wirelessly supplied with electric power from another power-supplying coil; and   a second machine supporting the secondary power-supplying coil and configured to move,   wherein a relative positional relationship or a relative attitudinal relationship between the first machine and the second machine is capable of being adjusted in response to a movement or a change in attitude of the second machine so that a state in which electric power is wirelessly supplied from the primary power-supplying coil to the secondary power-supplying coil is maintained.   
     
     
         2 . The wireless power supply system according to  claim 1 , comprising:
 a plurality of the primary power-supplying coils;   a plurality of the secondary power-supplying coils;   a plurality of the first machines; and   a plurality of the second machines,   wherein the plurality of the second machines respectively support a plurality of load devices supplied with electric power that is wirelessly supplied to the plurality of the secondary power-supplying coils,   the plurality of the primary power-supplying coils are respectively supported by the plurality of the first machines to be configured to wirelessly supply electric power to other power-supplying coils positioned one of below and above the primary power-supplying coils,   the plurality of the secondary power-supplying coils are respectively supported by the plurality of the second machines to be configured to be wirelessly supplied with electric power from other power-supplying coils positioned the other of above and below the secondary power-supplying coils,   relative positional relationships between the plurality of the first machines and the plurality of the second machines are capable of respectively being adjusted in response to movements of the plurality of the second machines so that the plurality of the primary power-supplying coils are respectively positioned below or above the plurality of the secondary power-supplying coils, and   electric power is wirelessly supplied from the plurality of the primary power-supplying coils to the plurality of the secondary power-supplying coils respectively and the wirelessly supplied electric power is supplied from the plurality of the secondary power-supplying coils to the plurality of the load devices of the plurality of the second machines respectively.   
     
     
         3 . The wireless power supply system according to  claim 1 ,
 wherein the first machine is a movable object that can move in the air in a horizontal direction,   the primary power-supplying coil is supported by the movable object to be configured to wirelessly supply electric power to another power-supplying coil positioned immediately below the primary power-supplying coil,   the second machine is a traveling object that steers and travels in a horizontal direction along a route,   the secondary power-supplying coil is supported by the traveling object to be configured to be wirelessly supplied with electric power from another power-supplying coil positioned immediately above the secondary power-supplying coil, and   the movable object moves in the horizontal direction so as to follow travel of the traveling object in response to the travel of the traveling object so that the movable object is positioned immediately above the traveling object.   
     
     
         4 . The wireless power supply system according to  claim 1 ,
 wherein the first machine is a vessel that moves on the water surface,   the primary power-supplying coil is supported by the vessel to be configured to wirelessly supply electric power to another power-supplying coil positioned immediately below the primary power-supplying coil,   the second machine is an underwater movable object that moves underwater,   the secondary power-supplying coil is supported by the underwater movable object to be configured to be wirelessly supplied with electric power from another power-supplying coil positioned immediately above the secondary power-supplying coil, and   the vessel moves on the water surface so as to follow movement of the underwater movable object so that the vessel is positioned immediately above the underwater movable object.   
     
     
         5 . The wireless power supply system according to  claim 1 ,
 wherein the first machine includes a first machine body and a connecting member that connects the first machine body and the second machine,   the primary power-supplying coil is guided to freely move along the connecting member, and   the primary power-supplying coil is moved along the connecting member so that electric power is wirelessly supplied from the primary power-supplying coil to the secondary power-supplying coil.   
     
     
         6 . The wireless power supply system according to  claim 1 ,
 wherein the first machine includes a first machine body and a rope that connects the first machine body and the second machine and is configured to be reeled out or reeled in,   the primary power-supplying coil is guided to freely move along the rope, and   the primary power-supplying coil is moved along the rope so that electric power is wirelessly supplied from the primary power-supplying coil to the secondary power-supplying coil.   
     
     
         7 . The wireless power supply system according to  claim 1 ,
 wherein the first machine is a crane that downwardly suspends a hoisting attachment with a cable,   the second machine is suspended from the hoisting attachment,   the primary power-supplying coil is guided to freely move along the cable, and   the primary power-supplying coil is moved along the cable so that a state in which electric power is wirelessly supplied from the primary power-supplying coil to the secondary power-supplying coil is maintained.   
     
     
         8 . The wireless power supply system according to  claim 1 ,
 wherein the first machine is a crane that downwardly suspends a hoisting attachment, whose hook is configured to rotate about a vertical axis, with a cable,   the second machine is a machine that causes the hook to rotate about the vertical axis,   the primary power-supplying coil is guided to freely move in a vertical direction along the cable,   the primary power-supplying coil is moved along the cable so that a state in which electric power is wirelessly supplied from the primary power-supplying coil to the secondary power-supplying coil is maintained, and   the second machine causes the hook to rotate about the vertical axis with the electric power wirelessly supplied from the primary power-supplying coil to the secondary power-supplying coil.   
     
     
         9 . The wireless power supply system according to  claim 1 , comprising:
 a plurality of the primary power-supplying coils;   a plurality of the secondary power-supplying coils;   the first machine that supports the plurality of the primary power-supplying coils and a photovoltaic battery that generates electric power from sunlight received by a light-receiving surface and supplies the electric power to the plurality of the primary power-supplying coils; and   a plurality of the second machines that respectively support the plurality of the secondary power-supplying coils,   wherein the first machine keeps the light-receiving surface of the photovoltaic battery facing the sun and changes the attitudes of the plurality of the primary power-supplying coils so as to follow movements of the plurality of the second machines in response to the movements or changes in attitude of the plurality of the second machines so that a state in which the electric power generated by the photovoltaic battery is wirelessly supplied from the plurality of the primary power-supplying coils to the plurality of the secondary power-supplying coils respectively is maintained.