# US 10,374,467 B2 · Coil unit, wireless power feeding device, wireless power receiving device and wireless power transmission device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,374,467 B2 - Document ID: US10374467B2 - Status: Granted - Kind: B2 - Application number: 15/472,739 - Filed: 2017-03-29 - Published: 2017-10-05 - Granted: 2019-08-06 - Earliest claimed: 2016-03-30 - Assignees: TDK Corporation - Applicants: TDK Corporation - Inventors: Takuya Murashige; Masahide Ohnishi; Masayuki Sugasawa; Masayuki Kobayashi - Web page: https://patentgrep.com/patent/US10374467B2 ## CPC - H02J 50/60: responsive to the presence of foreign objects, e.g. detection of living beings - B60L 53/122: Circuits or methods for driving the primary coil, e.g. supplying electric power to the coil - B60L 53/124: Detection or removal of foreign bodies - B60L 53/126: Methods for pairing a vehicle and a charging station, e.g. establishing a one-to-one relation between a wireless power transmitter and a wireless power receiver - H01F 27/02: Casings - H01F 27/2823: {Wires (H01F27/2866 takes precedence)} - H01F 27/363: {made of electrically conductive material} - H01F 38/14: Inductive couplings - H02J 50/10: using inductive coupling - H02J 50/70: involving the reduction of electric, magnetic or electromagnetic leakage fields - H01F 27/36: Electric or magnetic shields or screens (movable for varying inductance H01F21/10) - 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 90/14: Plug-in electric vehicles - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - 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 - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A coil unit provided on a ground side, including a coil, at least one sensor for detecting an object existing above or around the coil unit, a housing for accommodating the coil and the at least one sensor, wherein, the housing is provided with a dividing plate and at least one pillar for maintaining the internal space of the space for sensor, the dividing plate divides the space into a space for coil and a space for sensor located vertically above the space for coil, the space for coil is for accommodating the coil and the space for sensor is for accommodating the at least one sensor, and the at least one sensor is disposed on the dividing plate without contacting with an upper inner surface portion of the housing in the space for sensor. ## Claims ### Claim 1 A coil unit provided on a ground side, comprising a coil, at least one sensor for detecting an object existing above or around the coil unit, and a housing for accommodating the coil and the at least one sensor, wherein, the housing is provided with a dividing plate and at least one pillar, in which the dividing plate is for dividing the space into a space for coil and a space for sensor located vertically above the space for coil, and the space for coil is for accommodating the coil and the space for sensor is for accommodating the at least one sensor, and the at least one pillar is for maintaining the internal space of the space for sensor, and the at least one sensor is disposed on the dividing plate without contacting with an upper inner surface portion of the housing in the space for sensor. ### Claim 2 (depends on 1) The coil unit according to claim 1, wherein, the at least one sensor is a coil for detecting metal. ### Claim 3 (depends on 1) The coil unit according to claim 1, wherein, the at least one sensor has a hole penetrating in a vertical direction and the at least one pillar passes through the hole of the at least one sensor to extend vertically. ### Claim 4 (depends on 1) The coil unit according to claim 1, wherein, the at least one sensor comprises a plurality of sensors. ### Claim 5 (depends on 1) The coil unit according to claim 1, wherein, the at least one pillar comprises a plurality of pillars. ### Claim 6 (depends on 1) The coil unit according to claim 1, wherein, the housing has a projecting part extending vertically downward from the dividing plate in the space for coil. ### Claim 7 (depends on 6) The coil unit according to claim 6, wherein, the projecting part has a shape of a hollow tubular. ### Claim 8 (depends on 6) The coil unit according to claim 6, wherein, the coil is wound with the inner peripheral edge in contact with the projecting part. ### Claim 9 (depends on 1) The coil unit according to claim 1, wherein, the coil is a coil in which the feeding and receiving of an alternating current power is performed through a magnetic field. ### Claim 10 (depends on 1) A wireless power feeding device provided on the ground side, wherein, the wireless power feeding device comprises the coil unit according to claim 1. ### Claim 11 (depends on 1) A wireless power receiving device provided on the ground side, wherein, the wireless power receiving device comprises the coil unit according to claim 1. ### Claim 12 (depends on 10) A wireless power transmission device comprising a wireless power feeding device provided on a ground side and a wireless power receiving device mounted in a vehicle, wherein, the wireless power feeding device is the wireless power feeding device according to claim 10. ### Claim 13 (depends on 11) A wireless power transmission device comprising a wireless power feeding device mounted in a vehicle and a wireless power receiving device provided on a ground side, wherein, the wireless power receiving device is the wireless power receiving device according to claim 11. ### Claim 14 (depends on 9) A wireless power transmission device comprising a power supply device on a vehicle side mounted in the vehicle and a power supply device on the ground side in which the feeding and receiving of electric power is performed wirelessly between the power supply device on the vehicle side and the power supply device on the ground side, wherein, the power supply device on the ground side comprises the coil unit according to claim 9.