CN-122003798-A - Power receiving machine, wireless power supply system and wireless power supply method

Abstract

The power receiving motor includes a power feeding antenna unit having a plurality of power feeding antennas each for receiving a plurality of frequency bands of electric waves allocated for power feeding, a switch unit for switching and outputting the power feeding electric waves received by any one of the power feeding antennas of the power feeding antenna unit, an external interface unit connected to an IoT device that is a power receiving object, and a power feeding control unit for causing the electric waves output from the switch unit to supply power to the IoT device via the external interface unit.

Inventors

• Jutian Liaohui
• NIHEI Hiroshige

Assignees

• 凸版控股株式会社

Dates

Publication Date

20260508

Application Date

20241021

Priority Date

20231026

Claims (12)

1. 1. A power receiving machine is provided with: a power supply antenna unit having a plurality of power supply antennas for receiving radio waves of a plurality of frequency bands allocated as power supply, respectively; A switching unit that switches and outputs power for power supply received by any one of the power supply antennas included in the power supply antenna unit; an external interface unit connected to an IoT device that is a power receiving object, and And a power supply control unit configured to supply power to the IoT device via the external interface unit by using the radio wave output from the switching unit.
2. 2. The motor according to claim 1, further comprising: and a power supply control unit that converts the power output from the switching unit into power having a desired voltage.
3. 3. The motor according to claim 1, further comprising: and a battery unit that stores electric power output from the switching unit.
4. 4. The powered machine of claim 1, wherein, The plurality of frequency bands allocated for power supply include 4 frequency bands of 920MHz band, 2.4GHz band, 5.7GHz band, and 24GHz band.
5. 5. The powered machine of claim 1, wherein, The power supply control part is provided with a power supply control part, Obtaining battery information including a battery balance of the IoT device via the external interface portion, Based on the acquired battery information, determining whether to supply power to the IoT device by using a wave in any one of a plurality of frequency bands allocated as power supply, A power supply start request is made to a power supply control server so that a power supply radio wave is transmitted from a power transmitter corresponding to the determined frequency band.
6. 6. The powered machine of claim 5, wherein, The power supply control part is provided with a power supply control part, During powering of the IoT device via the external interface portion, the battery information is retrieved, Based on the obtained battery information, it is determined whether to change the frequency band of the power supply radio wave, When it is determined to change the frequency band, a power supply change request is made to the power supply control server so that a power supply electric wave is transmitted from the power transmitter corresponding to the changed frequency.
7. 7. The powered machine of claim 5, wherein, The power supply control unit determines whether to change the frequency band of the power supply radio wave based on the amount of change in the battery remaining amount with respect to the amount of change caused by power supply to the IoT device via the external interface unit.
8. 8. The powered machine of claim 1, wherein, The power receiving motor transmits a radio wave having the same frequency band as any one of the frequency bands of the radio wave received by the plurality of power feeding antennas, and performs communication.
9. 9. The powered machine of claim 1, wherein, The power receiving motor transmits a radio wave having a different frequency band from any of the radio wave frequency bands received by the plurality of power feeding antennas, and performs communication.
10. 10. The powered machine of claim 1, wherein, The external interface section includes a connector capable of connecting a USB cable.
11. 11. A wireless power supply system is provided with: the motor according to claim 1, and And a power supply control server that controls the power transmission motor so that a power supply radio wave is transmitted from the power transmission motor corresponding to a frequency of any one of the plurality of frequency bands allocated for power supply, in response to a request from the power reception motor.
12. 12. A wireless power supply method is a wireless power supply method carried out by a motor, The power receiving motor includes a power feeding antenna unit having a plurality of power feeding antennas each for receiving radio waves of a plurality of frequency bands allocated for power feeding, and an external interface unit connected to an IoT device that is a power receiving object, In the method of wireless power supply, The switch section switches and outputs the power supply radio wave received by any one of the power supply antennas included in the power supply antenna section, The power supply control unit supplies power to the IoT device via the external interface unit by the radio wave output from the switching unit.

Description

Power receiving machine, wireless power supply system and wireless power supply method Technical Field The invention relates to a powered machine, a wireless power supply system and a wireless power supply method. The present application claims priority based on japanese patent application No. 2023-184921 of the japanese application at 10/26 of 2023, the contents of which are incorporated herein by reference. Background A wireless power supply technology for supplying power from a power transmitting device to a power receiving device by wireless is known (for example, patent document 1). As frequencies for wireless power supply, 3 bands, that is, 920MHz band, 2.4GHz band, and 5.7GHz band, are allocated. Prior art literature Patent literature Patent document 1 Japanese patent laid-open No. 2020-18146 Disclosure of Invention Problems to be solved by the invention However, although the technology has been modified in order to achieve practical use of wireless power supply, there are few powered machines capable of handling wireless power supply, and in particular, in IoT (Internet of Things: internet of things) devices such as monitoring cameras, which have a sensor function and a communication function, there are few devices capable of handling wireless power supply. Changing existing IoT devices to IoT devices that handle wireless power costs to switch. Further, since there are a plurality of frequency bands allocated for wireless power supply, there is a problem that the switching cost is excessive when changing to an IoT device capable of coping with any frequency band. The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a power receiver, a wireless power supply system, and a wireless power supply method that can enable an existing IoT device to cope with wireless power supply. Means for solving the problems [1] The power receiving motor according to one aspect of the present invention includes a power feeding antenna unit having a plurality of power feeding antennas each configured to receive radio waves of a plurality of frequency bands allocated for power feeding, a switch unit configured to switch and output the power feeding radio waves received by any one of the power feeding antennas included in the power feeding antenna unit, an external interface unit configured to be connected to an IoT device that is a power receiving object, and a power feeding control unit configured to cause the power output from the switch unit to supply power to the IoT device via the external interface unit. [2] The power receiving machine according to claim 1, further comprising a power supply control unit that converts the electric power output from the switching unit into electric power having a desired voltage. [3] The power receiving machine according to [1] or [2], further comprising a battery unit that stores electric power output from the switch unit. [4] The powered machine of any one of [1] to [3], wherein the plurality of frequency bands allocated for power supply include 4 frequency bands of 920MHz frequency band, 2.4GHz frequency band, 5.7GHz frequency band, and 24GHz frequency band. [5] The powered machine according to any one of [1] to [4], wherein the power supply control unit acquires battery information including a remaining battery level of the IoT device via the external interface unit, determines whether or not to supply power to the IoT device with a power wave of any one of a plurality of frequency bands allocated for power supply based on the acquired battery information, and makes a power supply start request to a power supply control server so that a power supply electric wave is transmitted from a power transmitter corresponding to the determined frequency band. [6] The powered machine according to claim [5], wherein the power supply control unit acquires the battery information while the IoT device is being powered via the external interface unit, determines whether to change a frequency band of the power supply electric wave based on the acquired battery information, and if it is determined to change the frequency band, makes a power supply change request to the power supply control server so that the power supply electric wave is transmitted from the power transmitter corresponding to the changed frequency. [7] The powered machine according to [5] or [6], wherein the power supply control unit determines whether or not to change the frequency band of the power supply radio wave based on the amount of change in the battery margin with respect to the amount of change caused by power supply to the IoT device via the external interface unit. [8] The powered machine according to any one of [1] to [7], wherein the powered machine transmits a radio wave having the same frequency band as any one of the frequency bands of the radio waves received by the plurality of power feeding antennas, and performs communication. [9] The p