# US 12,214,692 B2 · Abnormality determination apparatus and abnormality determination method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,214,692 B2 - Document ID: US12214692B2 - Status: Granted - Kind: B2 - Application number: 17/569,508 - Filed: 2022-01-06 - Published: 2022-08-11 - Granted: 2025-02-04 - Earliest claimed: 2021-02-08 - Assignees: Toyota Jidosha Kabushiki Kaisha - Applicants: Toyota Jidosha Kabushiki Kaisha - Inventors: Toshiya Hashimoto; Daiki Yokoyama - Web page: https://patentgrep.com/patent/US12214692B2 ## CPC - B60L 53/68: Off-site monitoring or control, e.g. remote control - B60L 53/124: Detection or removal of foreign bodies - B60L 53/305: {Communication interfaces} - B60L 53/66: Data transfer between charging stations and vehicles - G01C 21/3415: {Dynamic re-routing, e.g. recalculating the route when the user deviates from calculated route or after detecting real-time traffic data or accidents} - G01C 21/3469: {Fuel consumption; Energy use; Emission aspects} - G01R 31/42: AC power supplies - G07C 5/008: {communicating information to a remotely located station (transmission systems for measured values G08C)} - G07C 5/085: {using electronic data carriers} - H02J 50/12: of the resonant type - H02J 50/60: responsive to the presence of foreign objects, e.g. detection of living beings - B60L 2240/622: by satellite navigation - B60L 2250/16: by display - 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 - G01C: MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY (measuring liquid level G01F; radio navigation, determining distance or velocity by use of propagation effects, e.g. Doppler effects, propagation time, of radio waves, analogous arrangements using other waves G01S) - G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12) - G07C: TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY ## Abstract An abnormality determination apparatus includes a processing unit, a communication unit configured to communicate with a plurality of mobile bodies and a storage unit configured to store power reception history information received from each of the mobile body. The power reception history information includes a power receiving location of the received power received by the power receiving device, and a power transmission efficiency calculated based on the received power, or the received power. The processing unit is configured to extract information of the power receiving location where the power transmission efficiency is less than a predetermined value from the power reception history information of the plurality of the mobile bodies stored in the storage unit, and is configured to determine an abnormality of the power transmission device based on the information of the extracted power receiving location. ## Claims ### Claim 1 An abnormality determination apparatus for determining an abnormality of a power transmission device installed on a road, the abnormality determination apparatus comprising: a processing unit; a communication unit configured to communicate with a plurality of mobile bodies each comprising a power receiving device for receiving power wirelessly transmitted from the power transmission device; and a storage unit configured to store power reception history information received from each of the plurality of mobile bodies, wherein the power reception history information includes a power receiving location of the received power received by the power receiving device, and either a power transmission efficiency calculated based on the received power, or the received power, wherein the processing unit is configured to, in response to an amount of aggregated power reception history information, in which the power reception history information of each of the plurality of mobile bodies is aggregated, being equal to or larger than a predetermined amount, extract information of the power receiving location where the power transmission efficiency is less than a predetermined value from the power reception history information of the plurality of mobile bodies stored in the storage unit, determine the abnormality of the power transmission device based on the extracted information of the power receiving location, and in response to a determination that the abnormality of the power transmission device has occurred in the power transmission device installed at the power receiving location, transmit power transmission device abnormality information including information on an installation location of the power transmission device in which the abnormality has occurred to instruct a repair apparatus to autonomously act to repair the power transmission device. ### Claim 2 (depends on 1) The abnormality determination apparatus according to claim 1, wherein the processing unit is configured to determine that the abnormality has occurred in the power transmission device installed at the power receiving location in response to a number of mobile bodies, whose power transmission efficiency is less than the predetermined value, being equal to or greater than a predetermined power transmission abnormality determination value. ### Claim 3 (depends on 1) The abnormality determination apparatus according to claim 1, wherein the processing unit is configured to determine the abnormality of the power transmission device based on a ratio of mobile bodies having the power transmission efficiency equal to or greater than the predetermined value at the power receiving location where the power transmission efficiency is less than the predetermined value. ### Claim 4 (depends on 3) The abnormality determination apparatus according to claim 3, wherein the ratio is a ratio of a number of the mobile bodies in which the power transmission efficiency is less than the predetermined value divided by a number of the mobile bodies in which the power transmission efficiency is equal to or greater than the predetermined value, and the processing unit is configured to determine that the abnormality has occurred in the power transmission device installed at the power receiving location in response to the ratio being equal to or greater than a predetermined power transmission abnormality determination value. ### Claim 5 (depends on 1) The abnormality determination apparatus according to claim 1, wherein the processing unit is configured to determine that the abnormality has occurred in the power transmission device installed at a location where a number of data for which the power transmission efficiency is less than the predetermined value is equal to or greater than a predetermined power transmission abnormality determination value. ### Claim 6 (depends on 1) The abnormality determination apparatus according to claim 1, wherein the processing unit is configured to transmit the power transmission device abnormality information including the information on the installation location of the power transmission device in which the abnormality has occurred to a management center managing the power transmission device. ### Claim 7 (depends on 1) An abnormality determination system, comprising the abnormality determination apparatus according to claim 1, and the power transmission device, wherein the power transmission device comprises: a detection device configured to detect a foreign object present on the road; and a power transmission control device configured to determine that an abnormality related to the detection device has occurred in response to a number of times of detection of the foreign object within a predetermined period of time being equal to or greater than a predetermined number of times. ### Claim 8 (depends on 7) The abnormality determination system according to claim 7, wherein the power transmission device further comprises a communication device configured to communicate with the abnormality determination apparatus, and the power transmission control device is configured to transmit, in response to the number of times of detection of the foreign object within the predetermined period of time being equal to or greater than the predetermined number of times, information on the installation location of the power transmission device in which the abnormality related to the detection device has occurred, to the abnormality determination apparatus via the communication device. ### Claim 9 (depends on 8) The abnormality determination system according to claim 8, wherein the storage unit stores the information on the installation location of the power transmission device in which the abnormality related to the detection device has occurred received from the power transmission device, and the processing unit is configured to identify the installation location of the power transmission device in which an abnormality has occurred from among installation locations of the power transmission device in which an abnormality related to the detection device has not occurred based on the power reception history information and information received from the power transmission device. ### Claim 10 (depends on 7) The abnormality determination system according to claim 7, wherein the detection device is a foreign object detection device for detecting a metal foreign object present on the road or a biological protection device for detecting a living body present on the road. ### Claim 11 (depends on 1) An abnormality determination system, comprising an abnormality determination apparatus as claimed in claim 1, and the plurality of mobile bodies, wherein the processing unit of the abnormality determination apparatus is configured to transmit to a mobile body of the plurality of mobile bodies the power transmission device abnormality information including the information on the installation location of the power transmission device where the abnormally has occurred, and the mobile body is configured to set a travel route in consideration of the received power transmission device abnormality information. ### Claim 12 (depends on 11) The abnormality determination system of claim 11, wherein the mobile body is configured to change the set travel route to a travel route that does not pass through the road when the set travel route before receiving the power transmission device abnormality information is a travel route that passes through the road including the power transmission device in which the abnormality has occurred. ### Claim 13 (depends on 11) The abnormality determination system according to claim 11, wherein the mobile body is configured to change the set travel route to a travel route that does not pass through the road when the set travel route before receiving the power transmission device abnormality information is a travel route that passes through the road including the power transmission device in which the abnormality has occurred, in response to an abnormality range of the power transmission device on the road being equal to or larger than a predetermined area. ### Claim 14 (depends on 1) An abnormality determination system comprising an abnormality determination apparatus as claimed in claim 1, and the plurality of mobile bodies, wherein the processing unit of the abnormality determination apparatus is configured to transmit the power transmission device abnormality information including the information on the installation location of the power transmission device in which the abnormality has occurred to a mobile body of the plurality of mobile bodies, and the mobile body is configured to provide the information on the installation location of the power transmission device in which the abnormality has occurred to an occupant of the mobile body via an information providing apparatus mounted on the mobile body in response to the power transmission device abnormality information being received. ### Claim 15 An abnormality determination method of determining an abnormality of a power transmission device installed on a road, the abnormality determination method comprising: collecting power reception history information including a power receiving location of received power received by a power receiving device, and either a power transmission efficiency calculated based on the received power, or the received power, by communicating with a plurality of mobile bodies each including the power receiving device for receiving power wirelessly transmitted from the power transmission device; and in response to an amount of aggregated power reception history information in which the power reception history information of each of the plurality of mobile bodies is aggregated being equal to or larger than a predetermined amount, extracting information of the power receiving location where the power transmission efficiency is less than a predetermined value from the collected power reception history information; determining the abnormality of the power transmission device based on the extracted information of the power receiving location; and in response to a determination that the abnormality of the power transmission device has occurred in the power transmission device installed at the power receiving location, transmitting power transmission device abnormality information including information on an installation location of the power transmission device in which the abnormality has occurred to instruct a repair apparatus to autonomously act to repair the power transmission device.