# US 10,320,243 B2 · Wireless power supply system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,320,243 B2 - Document ID: US10320243B2 - Status: Granted - Kind: B2 - Application number: 15/208,947 - Filed: 2016-07-13 - Published: 2016-11-03 - Granted: 2019-06-11 - Earliest claimed: 2014-01-21 - Assignees: IHI Corporation - Applicants: Ihi Corporation - Inventors: Susumu Tokura; Masakazu Hara; Kentaro Furiya - Web page: https://patentgrep.com/patent/US10320243B2 ## CPC - B60L 53/12: Inductive energy transfer - B60L 53/30: Constructional details of charging stations - H01F 38/14: Inductive couplings - H02J 7/70: characterised by the mechanical construction - H02J 50/12: of the resonant type - H02J 50/70: involving the reduction of electric, magnetic or electromagnetic leakage fields - B60L 2270/147: electro magnetic [EMI] - B60M 7/003: {for vehicles using stored power (e.g. charging stations)} - H02J 3/322: {the battery being on-board an electric or hybrid vehicle, e.g. vehicle to grid arrangements [V2G], power aggregation, use of the battery for network load balancing, coordinated or cooperative battery charging} - H02J 50/90: involving detection or optimisation of position, e.g. alignment - H02J 2105/37: exchanging power with electric vehicles [EV] or with hybrid electric vehicles [HEV] - Y02T 10/70: Energy storage systems for electromobility, e.g. batteries - Y02T 10/7072: Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors - Y02T 90/12: Electric charging stations - Y02T 90/14: Plug-in electric vehicles - B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES - H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - B60M: POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES (control of points and safety arrangements along railway lines B61L; construction of rails and points in general E01B) - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract Provided is a wireless power-supplying system equipped with a power-supplying coil disposed on the ground side, and a power-receiving coil that is mounted on a movable body and wirelessly receives power supplied from the power-supplying coil. In addition, the wireless power-supplying system is provided with a recovery coil in the vicinity of a space between the power-supplying coil and the power-receiving coil such that a wound face thereof intersects leakage flux occurring when the power is supplied from the power-supplying coil to the power-receiving coil. ## Claims ### Claim 1 A wireless power-supplying system comprising: a power-supplying coil disposed on a ground side; a power-receiving coil mounted on a movable body and configured to wirelessly receive power supplied from the power-supplying coil; a plurality of recovery coils provided in the vicinity of a space between the power-supplying coil and the power-receiving coil such that at least one wound face thereof intersects leakage flux occurring when power is supplied from the power-supplying coil to the power-receiving coil; and a moving mechanism for moving the plurality of the recovery coils, wherein the plurality of the recovery coils are provided in a height direction of the space, an angle of a wound face varies according to a mounting height, and at least one of the plurality of the recovery coils is connected to at least one load, wherein: the moving mechanism includes a support supporting the plurality of recovery coils and configured to be extendable and contractible; the support is configured such that a plurality of posts that correspond to the plurality of recovery coils and air actuators provided between these posts are disposed and formed in a straight line shape; and the support is configured to increase and reduce an interval between the recovery coils by the extension and contraction of these posts by actuating each of the air actuators. ### Claim 2 (depends on 1) The wireless power-supplying system according to claim 1 wherein a moving mechanism displaces the plurality of the recovery coils from a state in which the recovery coils lie above or on the ground or are retracted in the ground to a state in which the recovery coils stand up in the vicinity of the space. ### Claim 3 (depends on 2) The wireless power-supplying system according to claim 2, wherein: the support is configured to stop the actuators of the support by touching a bottom portion of the movable body by a leading end of the support. ### Claim 4 A leakage flux recovery unit comprising: a power-supplying coil disposed on a ground side; a power-receiving coil mounted on a movable body and configured to wirelessly receive power supplied from the power-supplying coil; a plurality of recovery coils provided in the vicinity of a space between the power-supplying coil and the power-receiving coil such that a wound face thereof intersects leakage flux occurring when the power is supplied from the power-supplying coil to the power-receiving coil; and a moving mechanism for moving the plurality of the recovery coils, wherein the plurality of the recovery coils are provided in a height direction of the space, an angle of the wound face varies according to a mounting height, and the at least one of the plurality of the recovery coils is connected to at least one load, wherein: the moving mechanism includes a support supporting the plurality of recovery coils and configured to be extendable and contractible; the support is configured such that a plurality of posts that correspond to the plurality of recovery coils and air actuators provided between these posts are disposed and formed in a straight line shape; and the support is configured to increase and reduce an interval between the recovery coils by the extension and contraction of these posts by actuating each of the air actuators.