WO2022052494A1 - Dispositif d'alimentation électrique sans fil et procédé d'alimentation électrique sans fil - Google Patents

Dispositif d'alimentation électrique sans fil et procédé d'alimentation électrique sans fil Download PDF

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Publication number
WO2022052494A1
WO2022052494A1 PCT/CN2021/092584 CN2021092584W WO2022052494A1 WO 2022052494 A1 WO2022052494 A1 WO 2022052494A1 CN 2021092584 W CN2021092584 W CN 2021092584W WO 2022052494 A1 WO2022052494 A1 WO 2022052494A1
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WO
WIPO (PCT)
Prior art keywords
antenna
power supply
wireless power
transmitting end
receiving end
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2021/092584
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English (en)
Chinese (zh)
Inventor
水伟
杜志侠
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Huawei Digital Power Technologies Co Ltd
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Huawei Digital Power Technologies Co Ltd
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Filing date
Publication date
Application filed by Huawei Digital Power Technologies Co Ltd filed Critical Huawei Digital Power Technologies Co Ltd
Publication of WO2022052494A1 publication Critical patent/WO2022052494A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/20—Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2105/00—Networks for supplying or distributing electric power characterised by their spatial reach or by the load
    • H02J2105/10—Local stationary networks having a local or delimited stationary reach
    • H02J2105/12—Local stationary networks having a local or delimited stationary reach supplying households or buildings

Definitions

  • the present application relates to the technical field of wireless power supply, and in particular, to a wireless power supply device and a method for wireless power supply.
  • Wireless power supply means that the transmitting end (also known as the source end) transmits electromagnetic wave energy through the antenna, and the receiving end (also known as the power receiving end) receives the electromagnetic wave energy through the antenna and stores electricity.
  • the placement positions of different power receiving terminals are likely to be different, and electromagnetic waves are directional when transmitted through the antenna. If the electromagnetic wave transmitting direction of the transmitting end fails to cover the receiving end in certain directions, the transmitting end cannot support wireless power supply to the receiving end in these directions, or the power supply efficiency is low.
  • the transmitting end needs to set antennas in different directions.
  • the receiving end is concentrated in one direction.
  • the antenna set on the transmitting end that does not face the receiving end has no power output, which reduces the utilization rate of the antenna.
  • the present application provides a wireless power supply device and a wireless power supply method.
  • the direction of the antenna can be dynamically adjusted so that it faces the power receiving end, so that in any application scenario All can exert the transmitting capability of all antennas at the transmitting end and improve the utilization rate of the antennas.
  • a wireless power supply device including: a first antenna; and a driving module for changing the direction of the first antenna.
  • the driving module may change the position of the first antenna through any one of the following operations or a combination of multiple operations: driving the first antenna to generate displacement, and driving the first antenna to generate steering (that is, causing the The orientation of the first antenna changes).
  • the wireless power supply device is a transmitter end (ie, a source end) of wireless power supply.
  • the antenna of the transmitting end of the wireless power supply is usually fixedly installed. Once installed, the electromagnetic wave emission range of the antenna is given. That is to say, the emission direction of electromagnetic waves can only be adjusted within the given electromagnetic wave emission range. However, the antenna cannot cover the receiving end outside the given electromagnetic wave emission range. In practical applications, there may be scenarios where the receiving end is concentrated in one direction. In this case, the antenna installed on the transmitting end that does not face the receiving end has no power output, resulting in lower antenna utilization.
  • the position of the antenna of the wirelessly powered transmitting end is variable (for example, the direction is variable), so the coverage of the antenna can be flexibly and variable, so the antenna of the transmitting end can be dynamically adjusted to face the power receiving end, Therefore, in any application scenario, the transmitting capabilities of all antennas at the transmitting end can be exerted, and the utilization rate of the antennas can be improved.
  • the wireless power supply device is a receiving end (ie, a power receiving end) of wireless power supply.
  • the antenna of the power receiving end of the wireless power supply has a function of variable position, which can improve the power supply efficiency by adjusting the steering of the antenna during the process of receiving the wireless power supply.
  • the wireless power supply device is a transmitter of wireless power supply; wherein, the driving module is used to change the position of the first antenna, so that the The first antenna faces the receiving end of the wireless power supply.
  • the transmitting end further includes: a control module, configured to control the driving module to change the position of the first antenna according to the position of the power receiving end, so that the first antenna faces the power receiving end .
  • the driving module changes the position of the first antenna according to the instruction of the control module, so that the first antenna faces the receiving end of the wireless power supply.
  • the driving module can also support manual driving by the user.
  • the wireless power supply device is a transmitter of wireless power supply
  • the transmitter further includes a second antenna
  • the current direction of the first antenna is the first antenna.
  • One direction, the current direction of the second antenna is the second direction
  • the transmitting end further includes a control module for: determining that the first antenna needs to be turned to the second direction according to the position of the power receiving end ; controlling the driving module to change the direction of the first antenna to the second direction; controlling the first antenna and the second antenna to transmit energy using beamforming technology.
  • control module is configured to: control the driving module to change the direction of the antenna whose current direction is not in the same direction, so that all the wireless power supply devices have the same direction.
  • the antennas are all facing the same direction; all the antennas controlling the wireless power supply device use beamforming technology to transmit energy.
  • the current direction does not include the first antenna in the antennas in the same direction.
  • the number of beamforming antennas is expanded. It should be understood that the coverage of the beamforming technology is proportional to the number of antennas. Therefore, expanding the number of beamforming antennas can improve the utilization rate of energy transmission at the transmitting end and the antenna utilization rate at the transmitting end.
  • the wireless power supply device is a transmitting end of wireless power supply, and the transmitting end further includes a receiving module for receiving the position sent by the power receiving end information.
  • the antenna is an antenna sub-array.
  • a wireless power supply system including a transmitter and a power receiver for wireless power supply, and the direction of the antenna of the transmitter and/or the power receiver can be changed.
  • the directions of the antennas of the transmitting end and/or the receiving end may be changed.
  • the transmitting end is configured to change the position of the transmitting end according to the position of the power receiving end, so that the antenna faces the power receiving end.
  • the transmitting end includes a first antenna and a second antenna, the current direction of the first antenna is the first direction, and the second antenna's current direction is the first direction.
  • the current direction is the second direction; the transmitting end is used to: determine that the first antenna needs to be turned to the second direction according to the position of the power receiving end; change the direction of the first antenna to the second direction Two directions; control the first antenna and the second antenna to transmit energy using beamforming technology.
  • all the power receiving terminals in the wireless power supply system are concentrated in the same direction; wherein, the transmitting terminal is used for: changing the current direction and not in the same direction The direction of the antenna in the direction, so that all the antennas of the transmitting end face the same direction; all the antennas of the wireless power supply device are controlled to transmit energy using beamforming technology.
  • the antenna at the transmitting end includes an antenna sub-array.
  • the power receiving end is configured to send the location information of the power receiving end to the transmitting end.
  • a method for wireless power supply is provided, and the method is performed by a transmitting end of wireless power supply.
  • the method includes: acquiring the position of the power receiving end of the wireless power supply; and changing the position of the antenna of the transmitting end of the wireless power supply according to the position of the power receiving end, so that the antenna of the transmitting end faces the power receiving end.
  • the changing the position of the antenna of the wireless power transmitting end according to the position of the power receiving end, so that the antenna of the transmitting end faces the power receiving end includes: changing the wireless power supply according to the position of the power receiving end The direction of the antenna of the transmitting end, so that the antenna of the transmitting end faces the receiving end.
  • the transmitting end includes a first antenna and a second antenna, the current direction of the first antenna is the first direction, and the second antenna's current direction is the first direction.
  • the current direction is the second direction; wherein, according to the position of the power receiving end, changing the position of the antenna of the transmitting end of the wireless power supply includes: determining, according to the position of the power receiving end, that the first antenna needs to be turned to the second direction; changing the direction of the first antenna to the second direction; and the method further comprising: controlling the first antenna and the second antenna to transmit energy using beamforming technology.
  • all the power receiving ends of the wireless power supply are concentrated in the same direction; wherein, according to the position of the power receiving end, the antenna of the transmitting end of the wireless power supply is changed.
  • the position includes: changing the direction of the antennas whose current direction of the transmitting end is not in the same direction, so that all the antennas of the transmitting end face the same direction; the method further includes: controlling all the antennas of the transmitting end to use beams Shaping technology emits energy.
  • the antenna at the transmitting end includes an antenna sub-array.
  • acquiring the location of the power receiving end for wireless power supply includes: receiving location information sent by the power receiving end.
  • the present application makes the antenna of the transmitting end of the wireless power generation have the function of changing the position, such as the function of turning, so that the direction of the antenna can be dynamically adjusted so that it faces the power receiving end, so that it can be used in any application scenario.
  • the present application makes the antenna of the transmitting end of the wireless power generation have the function of changing the position, such as the function of turning, so that the direction of the antenna can be dynamically adjusted so that it faces the power receiving end, so that it can be used in any application scenario.
  • FIG. 1 is a schematic diagram of a wireless power supply scenario.
  • FIG. 2 is a schematic block diagram of a wireless power supply device provided by an embodiment of the present application.
  • FIG. 3 is a schematic block diagram of a transmitter (ie, a source) of a wireless power supply provided by an embodiment of the present application.
  • FIG. 4 and FIG. 5 are schematic diagrams of dynamically changing the direction of the antenna at the transmitting end according to an embodiment of the present application.
  • FIG. 6 is a schematic diagram of beamforming.
  • FIG. 7 is a schematic block diagram of a transmitter of wireless power supply provided by an embodiment of the present application.
  • FIG. 8 is a schematic block diagram of a power receiving end for wireless power supply provided by an embodiment of the present application.
  • FIG. 9 is a schematic diagram of a wireless power supply system provided by an embodiment of the present application.
  • FIG. 10 is a schematic flowchart of a method for wireless power supply provided by an embodiment of the present application.
  • the communication methods of these sensor nodes have basically been wireless (for example, wifi, zigbee, bluetooth, etc.), and the power supply is basically powered by batteries. But batteries make the sensor too bulky, and there are problems such as needing to be replaced when the storage capacity is exhausted. With the increasing application of sensors, the demand for wireless power supply is also increasing.
  • the common far-field wireless power supply means that the transmitter (also known as the source end) transmits electromagnetic wave energy through the antenna, and the receiver end (also known as the power receiver) receives the electromagnetic wave energy through the antenna and stores electricity.
  • the placement positions of different power receiving terminals are likely to be different. For example, in a smart home scenario, there are multiple power receiving terminals, and different power receiving terminals are placed in different indoor positions.
  • electromagnetic waves transmitted through an antenna have a direction. If the electromagnetic wave transmitting direction of the transmitting end fails to cover the receiving end in certain directions, the transmitting end cannot support wireless power supply to the receiving end in these directions, or the power supply efficiency is low.
  • the concept adopted in the prior art is that the transmitting end needs to set up antennas in different directions.
  • the transmitting end installs antennas in each direction that needs power supply for all power receiving ends.
  • the transmitter source
  • the transmitter is installed on the roof, and the transmitter is provided with a bottom antenna 3 .
  • the power receiving end 1 to the power receiving end n are within the coverage of the bottom antenna 3, so the bottom antenna 3 can provide wireless power to the power receiving end 1 to the power receiving end n.
  • the receiving end x-1 and the receiving end x-2 are not covered by the bottom antenna 3.
  • the receiving end is concentrated in one direction.
  • the antenna installed on the transmitting end that is not facing the receiving end has no power output, resulting in lower antenna utilization.
  • the power receiving terminal x-1 and the power receiving terminal x-2 are no longer in use.
  • the power receiving terminal is concentrated below the transmitting terminal, because the power receiving terminal 1
  • the power receiving end n is not within the coverage of the side antenna 1 and the side antenna 2, so the side antenna 1 and the side antenna 2 have no power output, which reduces the antenna utilization rate of the transmitting end.
  • the present application provides a wireless power supply device and a wireless power supply method.
  • the position of the antenna of the transmitting end of the wireless power generation variable for example, having a steering function
  • all antennas can be fully utilized in any application scenario.
  • the transmission capacity of the antenna can be improved, thereby improving the utilization rate of the antenna.
  • FIG. 2 is a schematic block diagram of a wireless power supply device 200 according to an embodiment of the present application.
  • the wireless power supply device 200 may be a transmitting end (source end) of wireless power supply, or may be a receiving end (power receiving end) of wireless power supply.
  • the wireless power supply device 200 includes an antenna 210 and a driving module 220 , and the driving module 220 is used to change the position of the antenna 210 .
  • the driving module 220 can change the position of the antenna 210 through any one of the following operations or a combination of multiple operations: driving the antenna 210 to generate displacement, and driving the antenna 210 to generate steering (ie, changing the direction of the antenna 210).
  • the antenna 210 faces the first direction
  • the driving module 220 can change the antenna 210 to face the second direction.
  • the driving mode of the driving module 220 may be electric driving or manual driving.
  • the driving mode of the driving module 220 is electric driving.
  • the driving module 220 includes a motor and a control link, the motor is used to drive the control link to rotate, and the control link is integrated with the antenna. Therefore, by driving the control rod to rotate by the motor, it is possible to drive the antenna to rotate, that is, to change the direction of the antenna.
  • a motor can be activated upon receiving a control command, thereby driving the control link to rotate.
  • the driving module 220 includes a motor and a control link, the motor is used to drive the control link to generate displacement, and the control link is integrated with the antenna. Therefore, by driving the control rod to generate displacement by the motor, it is possible to drive the antenna to generate displacement, thereby changing the position of the antenna.
  • the motor can be activated after receiving the control command, thereby driving the control link to generate displacement.
  • the driving manner of the driving module 220 may also support manual driving.
  • the driving module 220 includes a holding portion, which is integral with the antenna.
  • the user can move or rotate the grip, and the movement or rotation of the grip can drive the position of the antenna to change, for example, drive the antenna to displace or rotate (ie, drive the antenna to change direction).
  • the driving module 220 may also change the position (eg, the direction) of the antenna 210 in other feasible manners, which is not limited in this application.
  • the driving module 220 may also be referred to as a steering module.
  • the driving module 220 may be a component external to the antenna 210 .
  • the driving module 220 may be a component integrated inside the antenna 210 .
  • the antenna 210 can be understood as an antenna with a variable position function, for example, an antenna with a steering function.
  • the wireless power supply device 200 provided in this embodiment of the present application may be understood as a wireless power supply device with an antenna having a variable position function, for example, a wireless power supply device with a steering function of the antenna.
  • wireless powered device 200 may include one or more antennas.
  • the antennas 210 involved in the embodiments of the present application represent each antenna installed on the wireless power supply device 200 .
  • the solutions described herein regarding the antenna 210 are applicable to any antenna installed on the wireless power supply device 200 .
  • each antenna may correspond to one driving module 220 .
  • the wireless power supply device 200 includes M antennas and M driving modules corresponding to the M antennas one-to-one. That is, the M driving modules are respectively used to change the position of a corresponding antenna.
  • the positions of the multiple antennas may be driven by one driving module in a unified manner.
  • the wireless power supply device 200 is a transmitting end (ie, a source end) of wireless power supply.
  • an antenna 1 , an antenna 2 and an antenna 3 are arranged on the transmitting end (source end) of the wireless power supply.
  • the directions of the antenna 1, the antenna 2 and the antenna 3 all face below the bottom of the transmitting end.
  • the antenna 1 , the antenna 2 and the antenna 3 may all be disposed on the bottom surface of the transmitting end, for example, on the same horizontal plane.
  • the direction of the antenna 1 can be changed to face the power receiving end x-1, and the direction of the antenna 2 can be changed to face the power receiving end x-2.
  • an antenna 1 , an antenna 2 and an antenna 3 are arranged on the transmitting end (source end) of the wireless power supply.
  • the antenna 1 faces the outside of one side of the transmitting end
  • the antenna 2 faces the outside of the other side of the transmitting end
  • the antenna 3 faces the bottom of the bottom of the transmitting end.
  • the direction of the antenna 1 can be changed to face below the bottom of the transmitting end, and the direction of the antenna 2 can also be changed to be directed below the bottom of the transmitting end.
  • the steering of the antenna 1 and the antenna 2 is realized by a driving module (the driving module is not shown in FIG. 4 and FIG. 5 ).
  • the driving module may be integrated into the antenna 1 and the antenna 2 respectively, or the driving module may be arranged outside the antenna 1 and the antenna 2 .
  • the antenna of the transmitting end of the wireless power supply is usually fixedly installed. Once installed, the electromagnetic wave emission range of the antenna is given. That is to say, the emission direction of electromagnetic waves can only be adjusted within the given electromagnetic wave emission range. However, the antenna cannot cover the receiving end outside the given electromagnetic wave emission range.
  • the bottom antenna 3 is fixedly installed at the bottom of the transmitting end.
  • the power receiving end x-1 and the power receiving end x-2 are not covered by the bottom antenna 3. Therefore, the bottom antenna 3 cannot reach the power receiving end x-1 and the power receiving end x. -2 power supply.
  • the side antenna 1 is fixedly installed on the side of the transmitting end facing the receiving end x-1.
  • the receiving end x-2 and the receiving end 1 to the receiving end n are not covered by the side antenna 1. Therefore, the side antenna 1 cannot be used.
  • Power is supplied to the receiving terminal x-2 and the receiving terminal 1 to the receiving terminal n.
  • the side antenna 2 is fixedly installed on the side of the transmitting end facing the receiving end x-2.
  • the receiving end x-1 and the receiving end 1 to the receiving end n are not within the coverage of the side antenna 2. Therefore, the side antenna 2 cannot be used. Power is supplied to the power receiving terminal x-1 and the power receiving terminal 1 to the power receiving terminal n.
  • the receiving end is concentrated in one direction.
  • the antenna installed on the transmitting end that does not face the receiving end has no power output, resulting in lower antenna utilization.
  • the power receiving terminal x-1 and the power receiving terminal x-2 are no longer in use, and at this time, the power receiving terminal is concentrated below the transmitting terminal. Since the power receiving end 1 to the power receiving end n are not covered by the side antenna 1 and the side antenna 2, the side antenna 1 and the side antenna 2 have no power output, which reduces the antenna utilization rate of the transmitting end.
  • the position of the antenna of the wirelessly powered transmitting end is variable (for example, the direction is variable), so the coverage of the antenna can be flexibly and variable, so that the position of the transmitting end antenna can be flexibly adjusted according to the position of the receiving end , so that all antennas can supply power to the receiving end, so as to improve the antenna utilization rate of the transmitting end.
  • changing the position of the antenna for example, changing the direction of the antenna mentioned in the embodiments of the present application is different from changing the electromagnetic wave emission direction of the antenna.
  • changing the position of the antenna it is also possible to flexibly change the coverage of the antenna.
  • the antenna at the transmitting end is usually fixedly installed, and the electromagnetic wave emission direction can be adjusted within a given emission range, but the coverage of the antenna cannot be changed in real time.
  • the direction of the antenna can be dynamically adjusted so that it faces the receiving end, so that in any application scenario, the transmitting capabilities of all antennas at the transmitting end can be exerted and the utilization rate of the antenna can be improved.
  • the direction of the antenna can be dynamically adjusted, so that the antenna coverage of the transmitting end can be dynamically adjusted, thereby ensuring that the receiving end is within the antenna coverage of the transmitting end.
  • the wireless power supply device 200 is a receiving end (ie, a power receiving end) of wireless power supply.
  • the antenna of the power receiving end of the wireless power supply has the function of variable position (eg, steering), which can improve the power supply efficiency by adjusting the position (eg, direction) of the antenna during the process of receiving the wireless power supply.
  • the wirelessly powered transmitter 200 further includes a control module 230 for controlling the driving module 220 to change the position of the antenna 210.
  • control module 230 sends a control command to the driving module 220, and the driving module 220 changes the position of the antenna 210 according to the control command.
  • the driving module 220 includes a motor and a control link
  • the motor receives a control command from the control module 230 and drives the control link according to the control command.
  • the driving module 220 may also support manual driving.
  • the driving module 220 has a holding part for the user to hold, and the user can drive the driving module 220 to change the position of the antenna 210 by moving the holding part.
  • the driving module 220 is configured to change the position of the antenna 210 through the following operations, so that the antenna 210 faces the power receiver end of the wireless power supply: :
  • control module 230 is further configured to control the driving module 220 to change the direction of the antenna 210 according to the position of the power receiving end of the wireless power supply, so that the antenna 210 faces the power receiving end.
  • the location of the power receiving end mentioned in the embodiments of the present application can be understood as the spatial area to which the power receiving end belongs.
  • the direction of the antenna of the transmitting end is changed according to the position of the receiving end, so that the antenna of the transmitting end faces the receiving end. Therefore, it can be ensured that the receiving end is within the coverage of the antenna of the transmitting end.
  • control module 230 can also control the driving module 220 to change the direction of the antenna 210 according to the user's instruction, so that the antenna 210 faces the power receiving end.
  • a user may send instructions to the control module 230 using a remote control.
  • the control module 230 can select the antenna whose direction needs to be changed according to the position of the power receiving end (it is assumed that the transmitting end includes multiple antennas).
  • the transmitting end 200 includes a plurality of antennas (including the antenna 210 shown in FIG. 3 ), and the control module 230 is further configured to, according to the position of the receiving end, determine the first antenna whose direction needs to be changed among the plurality of antennas; control The driving module 220 changes the direction of the first antenna so that the first antenna faces the power receiving end.
  • the wireless power supply scenario includes power receiving end 1, power receiving end 2, and power receiving end 3, the arrangement orientation of different power receiving ends is different.
  • the transmitting end 200 includes an antenna 1 , an antenna 2 and an antenna 3 .
  • the control module 230 is used to, according to the position of the power receiving end 1, determine that the power is supplied wirelessly from the antenna 1 to the power receiving end 1, that is, to determine that the direction of the antenna 1 needs to be turned to the power receiving end 1; 2.
  • the control module 230 is also used to control the driving module 220 to change the direction of the antenna 1 to face the power receiving end 1; control the driving module 220 to change the direction of the antenna 2 to face the power receiving end 2; control the driving module 220 to change the antenna 3 direction so that it faces the receiving end 3.
  • an antenna 1 , an antenna 2 and an antenna 3 are arranged on the transmitting end (source end) of the wireless power supply.
  • the directions of the antenna 1, the antenna 2 and the antenna 3 all face below the bottom of the transmitting end.
  • the antenna 1 , the antenna 2 and the antenna 3 may all be disposed on the bottom surface of the transmitting end, for example, on the same horizontal plane.
  • the control module 230 is used for: acquiring the positions of the power receiving terminals (ie, the power receiving terminal 1 to the power receiving terminal n, and the power receiving terminal x-1 and the power receiving terminal x-2); detecting the power receiving terminal x-1 and the power receiving terminal x-2 If the electrical terminal x-2 is not within the coverage of the current antenna, it is determined that the direction of the antenna needs to be changed; the antenna 1 is allocated to the receiving terminal x-1, the antenna 2 is allocated to the receiving terminal x-2, and the receiving terminal 1 to the receiving terminal are allocated to the receiving terminal x-2.
  • the terminal n is assigned to the antenna 3; the driving module 320 is controlled to change the direction of the antenna 1 to face the power receiving terminal x-1, and the driving module 320 is controlled to change the direction of the antenna 2 to face the power receiving terminal x-2.
  • an antenna 1 , an antenna 2 and an antenna 3 are arranged on the transmitting end (source end) of the wireless power supply.
  • the antenna 1 faces the outside of one side of the transmitting end
  • the antenna 2 faces the outside of the other side of the transmitting end
  • the antenna 3 faces the bottom of the bottom of the transmitting end.
  • the control module 230 is used to: obtain the position of the power receiving terminal (ie, the power receiving terminal 1 to the power receiving terminal n); detect that the current antenna 1 and the antenna 2 cannot cover the power receiving terminal, and determine that the directions of the antennas 1 and 2 need to be changed;
  • the driving module 320 is controlled to change the direction of the antenna 1 to face the power receiving terminal 1 to the power receiving terminal n, and the driving module 320 is controlled to change the direction of the antenna 2 to face the power receiving terminal 1 to the power receiving terminal n.
  • the transmitting end 200 includes a first antenna and a second antenna
  • the first antenna represents the antenna 210 shown in FIG. 3
  • the current direction of the first antenna is the first direction
  • the current direction of the second antenna is the second direction.
  • the control module 230 is used to: determine that the first antenna needs to be turned to the second direction according to the position of the power receiving end; control the driving module 220 to change the direction of the first antenna to the second direction; control the first antenna and the second antenna to use beams Shaping technology emits energy.
  • Beamforming technology is a technology that propagates electromagnetic waves only in a specific direction.
  • the transmitter is responsible for transmitting energy through electromagnetic waves and focusing energy through beamforming technology.
  • Beamforming is usually achieved using an antenna array.
  • the electromagnetic wave radiation gains of multiple wave sources can be concentrated in one direction (that is, where the receiver is located), while the radiation gains of electromagnetic waves in other places are very high. little.
  • controlling the first antenna and the second antenna to transmit energy using beamforming technology means that by controlling the relative phases and amplitudes of the transmitted waves of the multiple wave sources on the first antenna and the second antenna, the first antenna and the second antenna are made to transmit energy.
  • the electromagnetic wave radiation gain of the wave source on the second antenna is concentrated in one direction (that is, the position of the receiving end).
  • the coverage of the beamforming technology (that is, the number of forming points) is proportional to the number of antennas, so expanding the number of antennas can improve the utilization rate of energy transmission at the transmitter, that is, the utilization rate of the antennas can be improved.
  • control module 230 is used to: control the driving module 220 to change the direction of the antenna whose current direction is not in the same direction, so that all the antennas of the transmitting end 200 face the same direction. Direction; control all antennas of the transmitting end 200 to transmit energy using beamforming technology.
  • the control module 230 is further used to: control the antenna 1 , the antenna 2 and the antenna 3. Transmit electromagnetic waves through beamforming technology.
  • the coverage of beamforming technology (that is, the number of forming points) is proportional to the number of antennas, expanding the number of antennas can improve the utilization rate of energy transmission at the transmitter, that is, the utilization rate of antennas can be improved.
  • the array performs beamforming, which can better improve the utilization rate of energy transmission at the transmitting end and improve the utilization rate of the antenna at the transmitting end.
  • the transmitting end 200 may further include a receiving module 240 for receiving the location information sent by the power receiving end.
  • the control module 230 is configured to obtain the position information of the power receiving end from the receiving module 240, so as to control the driving module 220 to adjust the position of the antenna 210 to face the power receiving end according to the position of the power receiving end.
  • the antenna mentioned in the embodiments of the present application may be an antenna sub-array, that is, an antenna array including multiple wave sources.
  • the wireless power supply device 200 (transmitting end, and/or power receiving end) in this embodiment of the present application includes one or more antenna sub-arrays.
  • the antenna sub-array can use beamforming technology to transmit electromagnetic wave energy.
  • the transmitting end can transmit electromagnetic wave energy through the antenna sub-array using beamforming technology.
  • the position of the antenna can be dynamically adjusted so that it faces the power receiving end, so that the position of the antenna can be adjusted dynamically.
  • the transmitting capabilities of all antennas at the transmitting end can be exerted to improve antenna utilization.
  • FIG. 7 is an example diagram of a transmitter (source) 700 for wireless power supply provided by an embodiment of the present application.
  • the transmitting end 700 includes a control module 710 , a receiving module 720 , a transmitting module 730 and an antenna array pool 740 .
  • the antenna array pool 740 includes a plurality of antenna subarrays (such as antenna subarrays 1, 2, .
  • each antenna sub-array has a built-in driving module 220, or each antenna sub-array is connected to an external driving module 220 (the driving module 220 is not shown in FIG. 7).
  • the receiving module 720 is configured to receive the location information of the power receiving end.
  • the receiving module 720 receives the location information of the power receiving terminal sent by the power receiving terminal.
  • the receiving module 720 receives the location information of the power receiving terminal sent by the user using the remote controller.
  • the control module 710 is configured to acquire the position of the power receiving end from the receiving module 720, and control one or more antenna sub-arrays in the antenna array pool 740 to change the position, for example, change the direction according to the position of the power receiving end.
  • control module 710 controlling the antenna sub-array 2 to change the direction
  • the control module 710 sends a control command to the driving module 220 in the antenna sub-array 2 to drive the driving module 220 to change the direction of the antenna sub-array 2 .
  • the transmitting module 730 is used for selecting one or more antenna sub-arrays in the antenna array pool 740 to transmit electromagnetic waves.
  • the control module 710 may correspond to the control module 230 in the foregoing embodiment, and the specific description is referred to above, and details are not repeated here.
  • the antenna array pool 740 may correspond to the antenna 210 and the driving module 220 in the foregoing embodiments.
  • the antenna array pool 740 may include the antenna 210 and the driving module 220 in the foregoing embodiments.
  • the antenna array pool 740 may include the antenna 210 and the driving module 220 in the foregoing embodiments.
  • FIG. 8 is an example diagram of a power receiving terminal 800 for wireless power supply provided by an embodiment of the present application.
  • the power receiving end 800 includes an antenna 810 , a transmitting module 820 , a receiving module 830 and an energy storage module 840 .
  • the sending module 820 is configured to send the location information of the power receiving end 800 to the transmitting end through the antenna 810 .
  • the receiving module 830 is configured to receive the electromagnetic waves emitted by the transmitting end through the antenna 810 .
  • the energy storage module 840 is used for storing the electromagnetic wave energy received by the receiving module 830 .
  • the power receiving end 800 may also include other functional modules.
  • the power receiving end 800 is a sensor, and the power receiving end 800 may further include a sensing module, and may also include a corresponding control module. This application does not limit this.
  • an embodiment of the present application further provides a wireless power supply system 900, including a transmitter 910 and a power receiver 920 for wireless power supply, and the directions of the antennas of the transmitter 910 and/or the power receiver 920 can be changed.
  • the transmitting end 910 is configured to change the antenna of the transmitting end 910 according to the position of the power receiving end, so that the antenna faces the power receiving end.
  • the transmitting end 910 includes a first antenna and a second antenna, the current direction of the first antenna is the first direction, and the current direction of the second antenna is the second direction; the transmitting end 910 is used for: according to the position of the power receiving end, It is determined that the first antenna needs to be turned to the second direction; the direction of the first antenna is changed to the second direction; the first antenna and the second antenna are controlled to transmit energy by using beamforming technology.
  • all the receiving ends in the wireless power supply system are concentrated in the same direction; wherein, the transmitting end 910 is used to: change the direction of the antenna whose current direction is not in the same direction, so that all the antennas of the transmitting end 910 face the same direction; All antennas controlling wireless powered devices transmit energy using beamforming technology.
  • the antenna of the transmitting end 910 includes an antenna sub-array.
  • the power receiving end is used to send the location information of the power receiving end to the transmitting end 910 .
  • the transmitter 910 is the wireless charging device 200 as the transmitter in the foregoing embodiment.
  • the transmitter 910 is the wireless charging device 200 as the transmitter in the foregoing embodiment.
  • the transmitter 910 is the wireless charging device 200 as the transmitter in the foregoing embodiment.
  • the transmitting end 910 is the transmitting end 700 in the foregoing embodiment.
  • the transmitting end 910 is the transmitting end 700 in the foregoing embodiment.
  • the power receiving terminal 920 is the power receiving terminal 800 in the foregoing embodiment.
  • the power receiving terminal 800 for specific description, refer to the above, which will not be repeated here.
  • control module involved in each of the above embodiments may be a processing module, or implemented by a processor-related circuit.
  • an embodiment of the present application further provides a method 1000 for wireless power supply.
  • the method 1000 includes steps S1010 and S1020.
  • S1010 Acquire the position of the power receiving end of the wireless power supply.
  • S1020 according to the position of the power receiving end, change the position of the antenna of the transmitting end of the wireless power supply, so that the antenna of the transmitting end faces the power receiving end.
  • step S1020 includes: according to the position of the power receiving end, changing the direction of the antenna of the transmitting end of the wireless power supply, so that the antenna of the transmitting end faces the power receiving end.
  • step S1010 includes: receiving the location information sent by the power receiving end.
  • step S1010 the instruction information sent by the user using the remote control may also be received to obtain the location information of the power receiving end.
  • the transmitting end includes a first antenna and a second antenna, the current direction of the first antenna is the first direction, and the current direction of the second antenna is the second direction; step S1020 includes: determining the first direction according to the position of the power receiving end The antenna needs to be turned to the second direction; the direction of the first antenna is changed to the second direction; the method 1000 further includes: controlling the first antenna and the second antenna to transmit energy using beamforming technology.
  • step S1020 includes: changing the direction of the antenna whose current direction of the transmitting end is not in the same direction, so that all the antennas of the transmitting end face the same direction; the method 1000 further includes: All antennas controlling the transmitter transmit energy using beamforming technology.
  • the method 1000 is performed by a wirelessly powered transmitter.
  • the execution body of the method 1000 is the wireless power supply device 200 as the transmitter in the foregoing embodiment.
  • the execution body of the method 1000 is the transmitting end 700 in the foregoing embodiment.
  • embodiments of the present application may also be applied to other technical fields, such as a smart home sensor network, an industrial measurement sensor network, an environment measurement sensor network, and the like.
  • the disclosed system, apparatus and method may be implemented in other manners.
  • the apparatus embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium.
  • the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution, and the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk and other media that can store program codes .

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

L'invention concerne un dispositif d'alimentation électrique sans fil et un procédé d'alimentation électrique sans fil. Le dispositif d'alimentation électrique sans fil comprend : une antenne ; et un module d'entraînement pour modifier la position de l'antenne. Le dispositif d'alimentation électrique sans fil peut être une extrémité d'émission pour une alimentation électrique sans fil. Une antenne d'une extrémité d'émission a la fonction d'une position variable, et par conséquent, la direction de l'antenne peut être ajustée de manière dynamique, de sorte que l'antenne fasse face à une extrémité de réception d'énergie, et par conséquent, les capacités d'émission de toutes les antennes de l'extrémité d'émission peuvent être utilisées dans n'importe quel scénario d'application, ce qui permet d'augmenter le taux d'utilisation des antennes.
PCT/CN2021/092584 2020-09-08 2021-05-10 Dispositif d'alimentation électrique sans fil et procédé d'alimentation électrique sans fil Ceased WO2022052494A1 (fr)

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