# US 12,180,680 B2 · Work system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,180,680 B2 - Document ID: US12180680B2 - Status: Granted - Kind: B2 - Application number: 17/895,504 - Filed: 2022-08-25 - Published: 2022-12-22 - Granted: 2024-12-31 - Earliest claimed: 2020-03-24 - Assignees: Honda Motor Co., Ltd. - Applicants: Honda Motor Co., Ltd. - Inventors: Kojiro Takasu; Manato Kuwabara; Masaki Hagiwara; Yusuke Nakajima - Web page: https://patentgrep.com/patent/US12180680B2 ## CPC - E02F 9/2054: {Fleet management} - H02J 50/20: using microwaves or radio frequency waves - A01D 34/008: {for automated or remotely controlled operation} - 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 - B60L 53/65: involving identification of vehicles or their battery types - B60L 53/68: Off-site monitoring or control, e.g. remote control - E02F 9/207: {of the type electric propulsion units, e.g. electric motors or generators} - H02J 7/42: with electronic devices having internal batteries, e.g. mobile phones - H02J 50/40: using two or more transmitting or receiving devices (H02J50/50 takes precedence) - A01D 2101/00: Lawn-mowers - B60L 2200/40: Working vehicles - 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 - E02F: DREDGING; SOIL-SHIFTING (winning peat E21C49/00) - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - A01D: HARVESTING; MOWING - 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 - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A work system includes a plurality of working machines each including a working unit; and a power feeding device configured to supply power to the plurality of working machines. The plurality of working machines includes a plurality of types of working machines different in amount of power required to drive the working unit. The power feeding device includes at least one first power transmission unit configured to wirelessly transmit power to a working area of the plurality of working machines. Each of the plurality of working machines includes a power reception unit configured to receive the power wirelessly transmitted to the working area. ## Claims ### Claim 1 A work system comprising: a plurality of autonomous electric mowers configured to autonomously perform mowing work in a working area of a lawn ground, the working area is defined by markers or an area wire; and a power feeding device including at least one first power transmission unit configured to wirelessly transmit power to at least one power transmission section in the working area, wherein each of the plurality of autonomous electric mowers includes a power reception unit configured to receive the power wirelessly transmitted to the at least one power transmission section in the working area, and each of the plurality of autonomous electric mowers autonomously moves to the at least one power transmission section to receive power. ### Claim 2 (depends on 1) The work system according to claim 1, wherein the at least one first power transmission unit performs a constant capacity of power transmission per unit area of the at least one power transmission section. ### Claim 3 (depends on 1) The work system according to claim 1, wherein the power feeding device includes a support member that is erected adjacent to an outside of the working area to support the first power transmission unit at a position higher than the working area, and the first power transmission unit performs radiation-type wireless power transmission. ### Claim 4 (depends on 1) The work system according to claim 1, wherein the power feeding device includes a plurality of the first power transmission units and a control unit configured to control each first power transmission unit, and the control unit controls each first power transmission unit such that power transmission areas of the first power transmission units do not overlap. ### Claim 5 (depends on 1) The work system according to claim 1, wherein each of the plurality of autonomous electric mowers includes a storage battery configured to store the power received by the power reception unit. ### Claim 6 (depends on 1) The work system according to claim 1, wherein a manned working area is provided adjacent to the working area. ### Claim 7 (depends on 1) The work system according to claim 1, wherein each of the plurality of autonomous electric mowers includes: a traveling unit including a motor as a drive source; and a second power transmission unit configured to wirelessly transmit regenerative power of the motor. ### Claim 8 (depends on 7) The work system according to claim 7, wherein the second power transmission unit wirelessly transmits the regenerative power to a power storage device provided in the working area. ### Claim 9 A work system comprising: a plurality of working machines each including a working unit; and a power feeding device configured to supply power to the plurality of working machines, wherein the plurality of working machines includes a plurality of types of working machines different in amount of power required to drive the working unit, the power feeding device includes at least one first power transmission unit configured to wirelessly transmit power to a working area of the plurality of working machines, each of the plurality of working machines includes a power reception unit configured to receive the power wirelessly transmitted to the working area, the working machine includes: a traveling unit including a motor as a drive source; and a second power transmission unit configured to wirelessly transmit regenerative power of the motor, and the second power transmission unit wirelessly transmits the regenerative power to another working machine that performs work in the working area. ### Claim 10 (depends on 9) The work system according to claim 9, wherein the other working machine does not include a traveling unit configured to cause the other working machine to travel. ### Claim 11 (depends on 9) The work system according to claim 9, wherein the working machine is an excavator or a dump truck. ### Claim 12 (depends on 9) The work system according to claim 9, wherein the working machine is a tamping machine. ### Claim 13 (depends on 1) The work system according to claim 1, comprising: a measurement unit configured to measure an amount of power received by the power reception unit; and a charging information generating unit configured to generate charging information based on a result of measurement by the measurement unit. ### Claim 14 A work system comprising: a plurality of working machines each including a working unit; and a power feeding device configured to supply power to the plurality of working machines, wherein the plurality of working machines includes a plurality of types of working machines different in amount of power required to drive the working unit, the power feeding device includes at least one first power transmission unit configured to wirelessly transmit power to a working area of the plurality of working machines, each of the plurality of working machines includes a power reception unit configured to receive the power wirelessly transmitted to the working area, the working machine includes: a traveling unit including a motor as a drive source; and a second power transmission unit configured to wirelessly transmit regenerative power of the motor, the system further comprises: a first measurement unit configured to measure an amount of power received by the power reception unit; a second measurement unit configured to measure an amount of power transmitted by the second power transmission unit; and a charging information generating unit configured to generate charging information based on results of measurement by the first measurement unit and the second measurement unit.