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US 12,722,515 B2Granted
Wireless power transfer system
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsMasato Maemura, Toshiya Hashimoto, Shogo Tsuge, Ryosuke Ikemura
Life of this patent
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Abstract
In a wireless power transfer system configured to contactlessly transfer power from a supply device in a road to a vehicle, the vehicle includes a plurality of power receiving devices configured to receive power from the supply device, and a power transfer ECU is configured to set, based on state information from the vehicle, a power transfer pattern by which each of a plurality of segments transfers power, the power transfer pattern being set for each power transfer device. The power transfer ECU is configured to cause each of the power transfer devices to transfer power based on the power transfer pattern.
Claims2
A wireless power transfer system comprising:
- a vehicle;
- and
- a supply device installed in a road and configured to contactlessly transfer power to the vehicle, wherein:
- the vehicle includes
- a plurality of power receiving devices configured to receive power from the supply device, and
- a communication device configured to send state information indicating states of the power receiving devices to the supply device;
- the supply device includes
- a plurality of power transfer devices including a first power transfer device and a second power transfer device, the first power transfer device including a first segment unit, the second power transfer device including a second segment unit, each of the first segment unit and the second segment unit including a plurality of segments configured to transfer power, and
- a processor
- configured to
- receive the state information,
- set, based on the received state information, a power transfer pattern by which each of the segments transfers power, the power transfer pattern being set for each of the power transfer devices, and
- cause each of the power transfer devices to transfer power based on the power transfer pattern;
- the state information includes
- identification information identifying each of the power receiving devices, and
- abnormality information indicating presence or absence of an abnormality in each of the power receiving devices;
- the processor is further configured to
- determine, based on the state information, whether the state of each of the power receiving devices is abnormal,
- set, in response to a determination that an abnormality has occurred, the power transfer pattern for stopping power transfer to the power receiving device with the abnormality,
- determine whether the vehicle moves from the first segment unit that the vehicle is currently traveling on to the second segment unit that the vehicle is going to travel next,
- pass, in response to a determination that the vehicle moves from the first segment unit to the second segment unit, the power transfer pattern of the first segment unit to the second segment unit, and
- cause the power transfer device to transfer power;
- the communication device of the vehicle is configured to, in a case where the abnormality occurs in any of the power receiving devices, send return information to the supply device after the power receiving device with the abnormality has returned to normal, the return information indicating that the power receiving device with the abnormality has returned to normal;
- the processor is further configured to change the power transfer pattern based on the return information;
- and
- the processor is further configured to, in a case where abnormal magnetic coupling occurs in any of the power receiving devices during a magnetic coupling check on the power receiving devices and the power transfer devices, set, in the second segment unit, the power transfer pattern for stopping power transfer to the power receiving device with the abnormal magnetic coupling.
23 more elements
A wireless power transfer system comprising:
- a vehicle;
- and
- a supply device installed in a road and configured to contactlessly transfer power to the vehicle, wherein:
- the vehicle includes:
- a plurality of power receiving devices configured to receive power from the supply device, and
- a communication device configured to send state information indicating states of the power receiving devices to the supply device;
- the supply device includes:
- a plurality of power transfer devices including a first power transfer device and a second power transfer device, the first power transfer device including a first segment unit, the second power transfer device including a second segment unit, each of the first segment unit and the second segment unit including a plurality of segments configured to transfer power;
- and
- a processor configured to:
- cause each of the power transfer devices to transfer power based on a current power transfer pattern, the current transfer pattern having been set based on prior state information;
- receive a current state information;
- set, based on the current state information, a next power transfer pattern by which a next segment unit is to transfers power, the next power transfer pattern being set based on the current state information, the next segment unit being the second segment unit that the processor determined the vehicle will travel to next;
- and
- cause the power transfer devices to transfer power based on the next power transfer pattern;
- the state information includes:
- identification information identifying each of the power receiving devices;
- and
- magnetic coupling abnormality information indicating presence or absence of a magnetic coupling abnormality in each of the power receiving devices;
- and
- the processor is further configured to, in a case where the current state information indicates the magnetic coupling abnormality for one or more of the power receiving devices
- set the next power transfer pattern for stopping power transfer to the power receiving device indicated as having the magnetic coupling abnormality;
- pass, in response to a determination that the vehicle moves from the first segment unit to the second segment unit, the power transfer pattern of the first segment unit to the second segment unit, and
- cause the power transfer device to transfer power:
- the communication device of the vehicle is configured to, in a case where the abnormality occurs in any of the power receiving devices, send return information to the supply device after the power receiving device with the abnormality has returned to normal, the return information indicating that the power receiving device with the abnormality has returned to normal;
- the processor is further configured to
- change the power transfer pattern based on the return information;
- and
- stop the power transfer devices from transferring power based on the magnetic coupling abnormality information included in the current state information.
26 more elements
Dependencies are inferred from the claim text.