WO2023036072A1

WO2023036072A1 - Wireless charging device and control method and apparatus therefor, and readable storage medium

Info

Publication number: WO2023036072A1
Application number: PCT/CN2022/116991
Authority: WO
Inventors: 万鹏程
Original assignee: 维沃移动通信有限公司
Priority date: 2021-09-08
Filing date: 2022-09-05
Publication date: 2023-03-16
Also published as: CN113629898A

Abstract

A wireless charging device and a control method and apparatus therefor, and a readable storage medium, which belong to the technical field of electronic devices. The wireless charging device comprises: a housing, which comprises a charging panel, wherein the charging panel is configured to carry an electric device; a primary charging coil, which is arranged in the housing, wherein the primary charging coil faces the electric device, and can be coupled to a secondary charging coil of the electric device, so as to transmit electrical energy to the electric device; a motion assembly, which is arranged on the charging panel; a first detection module, wherein at least a part of the first detection module is located in the housing, and the first detection module is configured to detect position information of the secondary charging coil; and a controller, which is arranged in the housing and is connected to the motion assembly and the first detection module so as to control the motion assembly to move the position of the electric device according to the position information, such that the position of the secondary charging coil matches the position of the primary charging coil.

Description

Wireless charging device and its control method, control device, and readable storage medium

Cross References to Related Applications

This application claims the priority of the Chinese patent application with the application number 202111052482.1 filed on September 08, 2021, and the title of the invention is "Wireless charging equipment and its control method, control device, and readable storage medium", all of which are incorporated by reference incorporated into this application.

technical field

The present application belongs to the technical field of electronic equipment, and in particular relates to a wireless charging equipment, a control method thereof, a control device, and a readable storage medium.

Background technique

In related technologies, since wireless charging does not require a charging cable, it has the characteristics of instant charging, etc., making the charging operation more convenient and convenient for users to charge mobile devices in fragmented time. Therefore, the charging method of mobile electronic devices tends to be from wired Charging is developing towards wireless charging.

Wireless charging is based on the principle of electromagnetic induction for power transmission, so the charging secondary coil in the electronic device is basically aligned with the charging primary coil in the charging device. If the charging secondary coil and the charging primary coil are not aligned, it will cause The rate of change of the magnetic induction intensity in the secondary coil decreases, resulting in a decrease in the secondary induced electromotive force, which reduces the charging efficiency or even makes it impossible to charge.

Contents of the invention

The present application aims to provide a wireless charging device and its control method, control device, and readable storage medium, which can automatically align the secondary coil of the electronic device placed on the charging panel with the primary coil of the wireless charging device, thereby improving Charging efficiency.

In the first aspect, the embodiment of the present application provides a wireless charging device, including:

The housing includes a charging panel, which is used to carry electrical equipment;

The charging primary coil is arranged in the casing, the charging primary coil faces the electric device, and can be coupled with the charging secondary coil of the electric device to transmit electric energy to the electric device;

Motion components, located on the charging panel;

A first detection module, at least part of the first detection module is located in the casing, and the first detection module is used to detect the position information of the charging secondary coil;

The controller is set in the casing and is connected with the moving component and the first detection module, and is used to control the moving component to move the position of the electric device according to the position information, so that the position of the charging secondary coil is the same as the position of the charging primary coil match.

In the second aspect, the embodiment of the present application provides a control method of a wireless charging device, which is used to control the wireless charging device as provided in the first aspect. The control method includes:

Detect the position information of the charging secondary coil of the electrical equipment;

According to the position information, the moving component of the wireless charging device is controlled to move the position of the electric device, so that the position of the charging secondary coil matches the position of the charging primary coil.

In a third aspect, an embodiment of the present application provides a control device for a wireless charging device, which is used to control the wireless charging device as provided in the first aspect. The control device for controlling the wireless charging device includes:

The detection module is used to detect the position information of the charging secondary coil of the electrical equipment;

The control module is used to control the moving component of the wireless charging device to move the position of the electric device according to the position information, so that the position of the charging secondary coil matches the position of the charging primary coil.

In a fourth aspect, an embodiment of the present application provides a readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps of the method for controlling a wireless charging device as provided in the second aspect are implemented .

In the embodiment of the present application, the wireless charging device is provided with a first detection module, and the first detection module can detect the position of the electric device, that is, the charging secondary coil of the electronic device placed on the charging panel for wireless charging At the same time, the wireless charging device is also equipped with a moving component, which can move the position of the object set on the charging panel, so it can move the position of the wireless charging electric device according to the position information of the charging secondary coil, so as to use The position of the charging secondary coil of the electric device matches the position of the charging primary coil of the wireless charging device, that is, the position of the charging secondary coil is "opposite" to the charging primary coil, so as to ensure that a sufficient rate of change of magnetic induction intensity is generated in the secondary coil , to ensure the secondary induced electromotive force, thereby improving the charging efficiency of wireless charging.

Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

Description of drawings

The above and/or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, wherein:

FIG. 1 shows one of the schematic structural diagrams of a wireless charging device according to an embodiment of the present application;

Fig. 2 shows the second structural schematic diagram of the wireless charging device according to the embodiment of the present application;

Fig. 3 shows a third structural schematic diagram of a wireless charging device according to an embodiment of the present application;

Fig. 4 shows a flowchart of a control method of a wireless charging device according to an embodiment of the present application;

Fig. 5 shows a schematic diagram of determining the current center position coordinates of the charging secondary coil in the control method of the wireless charging device according to the embodiment of the present application;

Fig. 6 shows a structural block diagram of a control device for a wireless charging device according to an embodiment of the present application.

Reference signs:

100 wireless charging device, 102 casing, 1022 charging panel, 104 charging primary coil, 106 motion component, 1062 transmission wheel, 1064 power part, 1066 universal wheel, 108 first detection module, 110 controller, 112 second detection module , 1122 sensors.

Detailed ways

Embodiments of the present application will be described in detail below, examples of which are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary, and are only for explaining the present application, and should not be construed as limiting the present application. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

The features of the terms "first" and "second" in the description and claims of the present application may explicitly or implicitly include one or more of these features. In the description of the present application, unless otherwise specified, "plurality" means two or more. In addition, "and/or" in the specification and claims means at least one of the connected objects, and the character "/" generally means that the related objects are an "or" relationship.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship indicated by "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, rather than indicating or implying the referred device or element Must be in a particular orientation, constructed, and operate in a particular orientation, and thus should not be construed as limiting of the application.

In the description of this application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application in specific situations.

A wireless charging device, a control method thereof, a control device, and a readable storage medium according to an embodiment of the present application are described below with reference to FIGS. 1 to 6 .

In some embodiments of the present application, a wireless charging device is provided. FIG. 1 shows one of the structural schematic diagrams of the wireless charging device according to the embodiment of the present application, and FIG. 2 shows a wireless charging device according to the embodiment of the present application The second schematic diagram of the structure of the device, as shown in Figure 1 and Figure 2, the wireless charging device 100 includes:

The casing 102 includes a charging panel 1022, and the charging panel 1022 is used to carry electric equipment;

The charging primary coil 104 is arranged in the casing 102, the charging primary coil 104 faces the electric device, and can be coupled with the charging secondary coil of the electric device to transmit electric energy to the electric device;

The moving assembly 106 is arranged on the charging panel 1022;

The first detection module 108, at least part of the first detection module 108 is located in the housing 102, the first detection module 108 is used to detect the position information of the charging secondary coil;

The controller 110 is arranged in the housing 102 and is connected with the moving component 106 and the first detection module 108, and is used to control the moving component 106 to move the position of the electric device according to the position information, so that the position of the charging secondary coil is consistent with the The positions of the charging primary coils 104 are matched.

In the embodiment of the present application, the wireless charging device 100 includes a casing 102 on which a charging panel 1022 is arranged, and a charging primary coil 104 is also arranged inside the casing 102 . When the wireless charging device 100 wirelessly charges the electric device, after the electric device is placed on the charging panel 1022, the charging secondary coil in the electric device is coupled with the charging primary coil 104 in the wireless charging device 100, An alternating current is induced in the charging secondary coil to provide energy for the electric device or to charge the battery in the electric device.

Wherein, in some embodiments, the charging panel 1022 is formed by the upper surface of the housing, the charging primary coil 104 is located below the charging panel 1022, and is arranged inside the housing 102, and the charging primary coil 104 and corresponding charging coils 104 are protected by the housing 102. The circuit structure is simple in structure, which is beneficial to reduce the production cost.

In some other embodiments, the charging panel 1022 can be a hollow plate and is arranged on the upper part of the housing, the upper surface of the charging panel 1022 is used to carry the electric equipment, and the charging primary coil 104 is located in the inner cavity of the charging panel 1022 , forming an integral module with the charging panel 1022, so as to realize modular assembly, which is conducive to improving assembly efficiency and reducing maintenance difficulty.

Since the charging primary coil 104 and the charging secondary coil are "aligned" during the wireless charging process, the charging efficiency of wireless charging is higher. Since different electric devices may have different setting positions of the charging secondary coils, it is difficult for the user to accurately place the electric device at a position where the charging secondary coil is "aligned" with the charging primary coil 104 .

Therefore, a first detection module 108 is provided in the wireless charging device 100 , and the position of the charging secondary coil in the electric device is detected through the first detection module 108 , so as to obtain the position information of the charging secondary coil. At the same time, the wireless charging device 100 is also provided with a moving component 106. The moving component 106 can be a transmission belt, a transmission wheel 1062, a roller, etc., and the electric device can be moved through the moving component 106, thereby changing the position of the electric device on the charging panel 1022. .

After the first detection module 108 detects the position information of the charging secondary coil of the electric device, the controller 110 controls the moving component 106 to move the position of the electric device on the charging panel 1022 according to the position information, thereby changing the charging secondary coil The position of the coil relative to the charging primary coil 104 is specifically to move the electric device to a position where the charging secondary coil is "opposed" to the charging primary coil 104, so as to ensure that a sufficient rate of change of magnetic induction intensity is generated in the secondary coil, ensuring The secondary induced electromotive force improves the charging efficiency of wireless charging.

In some embodiments of the present application, the wireless charging device 100 further includes: a second detection module 112, connected to the controller 110, for detecting object information on the charging panel 1022, and position information corresponding to the object information; the controller 110, further configured to control the movement component 106 to move the metal foreign object to a preset position according to the position information of the metal foreign object when the object information is a metal foreign object.

In the embodiment of the present application, the wireless charging device 100 is further provided with a second detection module 112, wherein the second detection module 112 can detect the object information placed on the charging panel 1022, when the object is placed on the charging panel 1022, the second The second detection module 112 can further detect whether the placed object is an electrical device or a metal foreign object.

Specifically, when there is a metal foreign object in the range of the charging primary coil 104, the changing magnetic field generated by the charging primary coil 104 will induce an eddy current in the metal foreign object, and this current will continue to provide Joule heat to the metal foreign object, making the metal foreign object The temperature continues to increase until thermal equilibrium is reached. During this period, the temperature may rise to the extent of damaging the device or threatening the safety of the human body, causing the use risk of the wireless charging device 100 .

Therefore, based on the wireless charging protocol, a handshake communication signal can be transmitted through the charging primary coil 104. If the response signal of the communication signal can be received, it means that the handshake is successful, and the electric device capable of wireless charging is placed on the charging panel 1022. At this time, it starts to charge the electric device based on the wireless charging protocol.

And if no response signal is received within a certain period of time after the handshake communication signal is sent, it means that the device placed on the charging panel 1022 is not an electric device capable of wireless charging, and it can be further judged whether the object is metal or not. Foreign objects, specifically, can control the charging primary coil 104 to work, and detect temperature changes, capacitance changes, impedance changes, magnetic parameter changes, etc. of the object to determine whether the object is a metal foreign object.

When it is determined that there is a metal foreign object on the charging panel 1022, according to the position information of the metal foreign object, the motion component 106 is controlled to "remove" the metal foreign object, specifically, the metal foreign object is moved to a preset position, and the preset position is specifically the charging The magnetic field strength of the primary coil 104 is less than the preset position, so after the metal foreign object is moved to the preset position, the charging primary coil 104 will not be able to form a strong eddy current in the metal foreign object, so it will not cause the metal foreign object The temperature rises to a dangerous level, thereby effectively ensuring the safe use of the wireless charging device 100 .

In some embodiments of the present application, the number of charging primary coils 104 is N, and the positions of the N charging primary coils 104 do not overlap, where N is a positive integer.

In the embodiment of the present application, a plurality of charging primary coils 104 are set in the wireless charging device 100, specifically, N charging primary coils 104 are set in the wireless charging device 100, and the setting positions of the N charging primary coils 104 are not overlapped, and distributed in the housing 102. Specifically, in the direction perpendicular to the charging panel, the N charging primary coils 104 can form N circular projections on the charging panel, as shown in the dotted line figure in FIG. 2 , and the centers of the N circular projections do not coincide. . In some implementations, as shown in FIG. 2 , among the N circular projections, adjacent circular projections at least partially intersect. In other embodiments, none of the N circular projections intersect.

In the embodiment of the present application, by setting N charging primary coils 104 not overlapping and distributing them in the casing, it is ensured that most of the area on the charging panel 1022 is covered by the radiation range of the charging primary coils 104. On the one hand, electrical equipment can be used It can be placed on the charging panel 1022 of the wireless charging device 100 more randomly, while avoiding the movement component 106 from greatly changing the position of the electric device. On the other hand, the wireless charging device 100 can charge a plurality of electric devices at the same time, providing a wireless The experience of using the charging device 100.

In some embodiments of the present application, the wireless charging device 100 further includes: a metal detection device 1122, disposed on the charging panel 1022, the metal detection device 1122 has a temperature sensor, a pressure sensor, a capacitance detection sensor, an impedance detection sensor and a magnetic sensor one or more of .

In the embodiment of the present application, the metal detection device 1122 can detect the position information of the metal object on the charging panel, so as to effectively detect the metal foreign object on the charging panel 1022, prevent missed detection, and improve the use of the wireless charging device 100 safety.

Wherein, the metal detection device 1122 includes a temperature sensor, and obtains the temperature rise state of the object on the charging panel 1022 through the temperature sensor, thereby identifying whether it is a metal foreign object.

The metal detection device 1122 also includes a pressure sensor, which detects the pressure value on the charging panel 1022 through the pressure sensor, so as to determine whether there is a charging device or a foreign object.

The metal detection device 1122 also includes a capacitance detection sensor, an impedance detection sensor, and a magnetic sensor, and judges whether there is a metal foreign object according to changes in capacitance value, impedance, and magnetic parameters, respectively. In this way, accurate detection of metal foreign objects can be realized.

In some embodiments of the present application, the moving assembly includes: a transmission wheel 1062 disposed on the upper surface of the charging panel 1022 ; a power member 1064 connected with the transmission wheel 1062 for driving the transmission wheel 1062 to rotate.

In the embodiment of the present application, the movement assembly 106 includes a transmission wheel 1062 and a power part 1064, wherein the power part 1064 can be a motor, and the output end of the power part 1064 is connected to the transmission wheel 1062, so as to drive the transmission wheel 1062 to follow the set direction Rotate, so that the object on the charging panel 1022 is driven to move through the transmission wheel 1062, thereby changing the position of the electric device, so that the charging secondary coil of the electric device is opposite to the charging primary coil 104 of the wireless charging device 100, or the charging panel The metal foreign object on 1022 is moved to a preset position, preventing the metal foreign object from heating under the influence of the charging primary coil 104, and improving the safety of the wireless charging device 100 in use.

In some embodiments of the present application, the transmission wheels 1062 include X first transmission wheels and Y second transmission wheels, the transmission direction of the first transmission wheels is the first direction, and the transmission direction of the second transmission wheels is the second direction , the angle range between the first transmission direction and the second transmission direction is: 45° to 135°, X and Y are positive integers.

In the embodiment of the present application, the transmission wheel 1062 specifically includes a first transmission wheel and a second transmission wheel. The first transmission wheel can drive the objects on the charging panel 1022 to move along the first transmission direction, and the second transmission wheel can drive the objects on the charging panel 1022 to move along the second transmission direction. The direction drives the object on the charging panel 1022 to move, and by setting X first transmission wheels and Y second transmission wheels, it is possible to move the electrical equipment on the charging panel 1022 in any direction to ensure the charging of the electrical equipment. The secondary coil is opposite to the charging primary coil 104 of the wireless charging device 100 , or the metal foreign objects are moved out of the radiation range of the charging primary coil 104 , which ensures the charging efficiency and the safety of the wireless charging device 100 .

Wherein, the angle range between the first transmission direction and the second transmission direction is: 45° to 135°, preferably, the first transmission direction and the second transmission direction are perpendicular.

In some embodiments of the present application, FIG. 3 shows the second structural schematic diagram of the wireless charging device 100 according to the embodiment of the present application. As shown in FIG. 3 , the transmission wheel 1062 is a universal wheel 1066 .

In this embodiment of the application, the transmission wheel 1062 is specifically a universal wheel 1066, and the universal wheel 1066 can rotate in any direction, so that the electric device on the charging panel 1022 can be moved in any direction to ensure the safety of the electric device. The charging secondary coil is opposite to the charging primary coil 104 of the wireless charging device 100 , or the metal foreign objects are moved out of the radiation range of the charging primary coil 104 to ensure the charging efficiency and the use safety of the wireless charging device 100 .

In some embodiments of the present application, a method for controlling a wireless charging device is provided, which is used to control the wireless charging device provided in any of the above embodiments. FIG. 4 shows a wireless charging device according to an embodiment of the present application The flowchart of the control method, as shown in Figure 4, the method comprises:

Step 402, detecting the location information of the charging secondary coil of the electric device;

Step 404, according to the position information, control the moving component of the wireless charging device to move the position of the electric device, so that the position of the charging secondary coil matches the position of the charging primary coil.

In the embodiment of the present application, since the charging primary coil and the charging secondary coil are "aligned" during the wireless charging process, the charging efficiency of wireless charging is higher. However, since different electric devices may have different setting positions of the charging secondary coils, it is difficult for the user to accurately place the electric device at a position where the charging secondary coil is "aligned" with the charging primary coil.

In the embodiment of the present application, a first detection module is provided in the wireless charging device, and the position of the charging secondary coil in the electric device is detected by the first detection module, so as to obtain the position information of the charging secondary coil.

After obtaining the position information of the charging secondary coil, move the electric device through the moving component of the wireless charging device, thereby changing the position of the charging secondary coil relative to the charging primary coil, specifically, moving the electric device to a position where the charging secondary The "opposite" position of the coil and the charging primary coil can ensure a sufficient rate of change of magnetic induction intensity in the secondary coil, ensure the secondary induced electromotive force, and improve the charging efficiency of wireless charging.

In some embodiments of the present application, the number of charging primary coils is N;

Detect the position information of the charging secondary coil of the electrical equipment, including:

Controlling the N charging primary coils to send detection signals respectively, and obtaining N induction signals respectively generated by the charging secondary coils according to the N detection signals;

Among the N induction signals, according to the M target induction signals whose signal values are not 0, determine the corresponding M associated charging primary coils, and the M center position coordinates corresponding to the M associated charging primary coils, where M is positive integer;

Establish a corresponding distance matrix according to the N induced signals;

According to the distance matrix and the M center position coordinates, the current center position coordinates of the charging secondary coil are determined, and the position information of the charging secondary coil is determined according to the current center coordinates.

In the embodiment of the present application, a plurality of charging primary coils are set in the wire charging device, specifically, N charging primary coils are set in the wireless charging device, and the N charging primary coils are distributed in the casing, so as to ensure charging Most of the area on the panel is covered by the radiation field of the charging primary coil.

Fig. 5 shows a schematic diagram of determining the current center position coordinates of the charging secondary coil in the control method of the wireless charging device according to the embodiment of the present application. As shown in Fig. 5, with N=5, that is, the wireless charging device includes 5 Taking the charging primary coil as an example, when determining the location information of the charging secondary coil, the five charging primary coils of the wireless charging device are first controlled to transmit detection signals respectively.

Specifically, the charging primary coil 502 transmits a first detection signal, the first detection signal will generate an induction signal x1 in the charging secondary coil 514, and the electric device will send the induction signal to the wireless charging device, as shown in Figure 5 As shown, the charging primary coil 502 is far away from the charging secondary coil 514, so the induced signal is 0, that is, x1=0.

The charging primary coil 504 transmits a second detection signal, and the second detection signal will generate an induction signal x2 in the charging secondary coil 514, and the electric device will send the induction signal to the wireless charging device, where x2=V1.

The charging primary coil 506 transmits a third detection signal, and the third detection signal will generate an induction signal x3 in the charging secondary coil 514, and the electric device will send the induction signal to the wireless charging device, where x3=V2.

The charging primary coil 508 transmits a fourth detection signal, the fourth detection signal will generate an induction signal x4 in the charging secondary coil 514, and the electric device will send the induction signal to the wireless charging device, where x4=0.

The charging primary coil 510 transmits a fifth detection signal, and the fifth detection signal will generate an induction signal x5 in the charging secondary coil 514, and the electric device will send the induction signal to the wireless charging device, where x5=V0.

The charging primary coil 512 transmits a sixth detection signal, and the sixth detection signal will generate an induction signal x6 in the charging secondary coil 514, and the electric device will send the induction signal to the wireless charging device, where x6=V3.

Further, among the above-mentioned 6 target induction signals, 3 target induction signals of signal value position 0 are determined, specifically x2, x3 and x6. According to the three target induction signals, the corresponding distance matrix is established.

Specifically, the distance matrix is as follows:

Further, according to the preset mapping relationship table, look up the mapping relationship between the induced signal value and the distance, and convert the distance matrix into:

Wherein, R1 is a distance value corresponding to V1, R2 is a distance value corresponding to V2, and R3 is a distance value corresponding to V3.

Further, according to the distance matrix, and the corresponding central point coordinates of the charging primary coil 504, the charging primary coil 506, and the charging primary coil 512, a set of equations is established as follows:

(x-x1) ² + (y-y1) ² = R1 ² ;

(x-x2) ² + (y-y2) ² = R2 ² ;

(x-x3) ² + (y-y3) ² = R3 ² ;

Wherein, (x, y) are the center point coordinates of the charging secondary coil, (x1, y1) are the center point coordinates of the charging primary coil 504, (x2, y2) are the center point coordinates of the charging primary coil 506, and (x3 , y3) is the center point coordinate of the charging primary coil 512 .

Solving the above equations can solve the coordinates of the center point of the charging secondary coil, thereby determining the position information of the charging secondary coil, and controlling the position of the moving component moving the electric device on the charging panel according to the position information of the charging secondary coil, thereby Change the position of the charging secondary coil relative to the charging primary coil, specifically, move the electrical equipment to a position where the charging secondary coil is "opposed" to the charging primary coil, so as to ensure that a sufficient rate of change of magnetic induction intensity is generated in the secondary coil , to ensure the secondary induced electromotive force, thereby improving the charging efficiency of wireless charging.

In some embodiments of the present application, according to the position information, controlling the moving component of the wireless charging device to move the position of the electric device, so that the position of the charging secondary coil matches the position of the charging primary coil, including:

In the M center position coordinates, determine the target center position coordinates;

According to the coordinates of the center position of the target and the coordinates of the center position of the target charging primary coil, the motion component is controlled to move the electric device, so that the coordinates of the current center position of the charging secondary coil match the coordinates of the target center position.

In the embodiment of the present application, when the electric device is moved, firstly, the target center position coordinates are determined among the M center position coordinates. Specifically, M center position coordinates, that is, the coordinates of M charging primary coils that can generate induced signals in the charging secondary coils of the electrical equipment, because these charging primary coils can generate induced signals in the charging secondary coils , so it can be determined that the M center position coordinates are closer to the current center coordinates of the charging secondary coil.

From the M center position coordinates, select the target center position coordinates, wherein, among the M center position coordinates, select a center position coordinate closest to the current center coordinates of the charging secondary coil as the target center position coordinates.

After determining the coordinates of the target center position, the motion component can be controlled to move the electrical equipment to the corresponding position, and the current center position coordinates of the charging secondary coil must match the target center position coordinates. The difference between the current center position coordinates and the target center position coordinates is less than the preset threshold, so as to ensure sufficient magnetic induction intensity change rate in the secondary coil, ensure the secondary induced electromotive force, and improve the charging efficiency of wireless charging.

In some embodiments of the present application, before detecting the position information of the charging secondary coil of the electric device, the control method further includes:

Detect object information on the charging panel of the wireless charging device;

In the case of detecting object information, a communication signal is sent through the charging primary coil;

If a response signal corresponding to the communication signal is received within a preset time period, the object information is determined to be an electrical device;

If no response signal is received within a preset time period, it is determined that the object information is a metal foreign object.

In the embodiment of the present application, before detecting the location information of the charging secondary coil of the electric device, it is first determined whether there is an electric device on the charging panel and whether the object on the charging panel is the electric device.

Specifically, sensors such as temperature sensors, pressure sensors, capacitance detection sensors, impedance detection sensors, or magnetic sensors may be provided on the charging panel. Taking the sensor as an example of a pressure sensor, if it is detected that there is a pressure value on the charging panel, it is determined that there is an object on the charging panel. At this time, the object information on the charging panel is further judged. In the same way, since the charging primary coil can be coupled with other metal objects, causing the object to heat up, or the capacitance, impedance or magnetic parameters to change, the detection of the object can also be achieved through the temperature sensor, capacitance detection sensor, impedance sensor and magnetic sensor.

Further, after the object information is detected, the charging primary coil is controlled, a communication signal is sent to the object on the charging panel, and a response signal is received. If the object on the charging panel is an electric device, the charging secondary coil of the electric device can generate an induction signal according to the communication signal, thereby identifying the charging primary coil, and sending the induction signal to the The charging primary coil realizes the handshake communication based on the wireless charging protocol.

Therefore, if the response signal returned by the charging secondary coil is received within the preset time period, it means that the current object information on the charging panel is a power-consuming device. At this time, power can be provided to the power-consuming device through the wireless charging protocol.

And if no response signal is received within the preset time period, it means that the object information on the current charging panel is not an electrical device, but a metal foreign object. At this time, the charging primary coil is controlled not to work, preventing metal foreign objects from heating under the influence of the magnetic field of the charging primary coil, and ensuring the working safety of the wireless charging device.

In some embodiments of the present application, when the object information is a metal foreign object, the position information of the metal foreign object is detected; according to the position information of the metal foreign object, the motion component is controlled to move the metal foreign object to a preset position, wherein the preset position The location where the magnetic field strength of the charging primary coil of the wireless charging device is less than a preset strength.

In the embodiment of the present application, when there is a metal foreign object within the range of the charging primary coil, the changing magnetic field generated by the charging primary coil will induce an eddy current in the metal foreign object, and this current will continue to provide Joule heat to the metal foreign object, making the metal foreign object The temperature continues to rise until thermal equilibrium is reached. During this period, the temperature may rise to the point of damaging the device or threatening the safety of the human body, posing risks to the use of wireless charging devices.

Therefore, when it is judged that there is a metal foreign object, according to the position information of the metal foreign object, the motion component is controlled to "remove" the metal foreign object, specifically, the metal foreign object is moved to a preset position, and the preset position is specifically the charging primary coil The position where the magnetic field strength is less than the preset strength, so after moving the metal foreign object to the preset position, the charging primary coil will not be able to form a strong eddy current in the metal foreign object, so it will not cause the temperature of the metal foreign object to rise to The degree of danger, thus effectively ensuring the safety of wireless charging equipment.

In some embodiments of the present application, a control device for a wireless charging device is provided, which is used to control the wireless charging device provided in any of the above embodiments. FIG. 6 shows a wireless charging device according to an embodiment of the present application The structural block diagram of the control device, as shown in Figure 6, the control device 600 of the wireless charging device includes:

A detection module 602, configured to detect the position information of the charging secondary coil of the electric device;

The control module 604 is configured to control the moving component of the wireless charging device to move the position of the electric device according to the position information, so that the position of the charging secondary coil matches the position of the charging primary coil.

The control module is also used to control the N charging primary coils to send detection signals respectively, and obtain N induction signals respectively generated by the charging secondary coils according to the N detection signals;

The control device of the wireless charging device further includes: a first determination module, configured to, among the N induced signals, determine the corresponding M associated charging primary coils according to the M target induced signals whose signal values are not 0, and M M center position coordinates corresponding to the associated charging primary coils, wherein M is a positive integer;

The first determining module is further configured to establish a corresponding distance matrix according to the N induced signals;

The first determining module is further configured to determine the current center position coordinates of the charging secondary coil according to the distance matrix and the M center position coordinates, and determine the position information of the charging secondary coil according to the current center coordinates.

Determine the coordinates of the center point of the charging secondary coil, thereby determining the position information of the charging secondary coil, and control the moving component to move the position of the electric device on the charging panel according to the position information of the charging secondary coil, thereby changing the relative charging of the charging secondary coil The position of the primary coil is specifically to move the electrical equipment to a position where the charging secondary coil is "opposed" to the charging primary coil, so as to ensure a sufficient rate of change of magnetic induction intensity in the secondary coil and ensure the secondary induced electromotive force, Thus, the charging efficiency of wireless charging is improved.

In some embodiments of the present application, the first determination module is also used to determine the target center position coordinates at the M center position coordinates;

The control module is also used to control the motion component to move the electric device according to the target center position coordinates and the target charging primary coil center position coordinates, so that the current center position coordinates of the charging secondary coil match the target center position coordinates.

In some embodiments of the present application, the detection module is also used to detect object information on the charging panel of the wireless charging device;

The control device of the wireless charging device further includes: a communication module, configured to send a communication signal through the charging primary coil when the object information is detected;

The second determination module is configured to determine that the object information is an electrical device when a response signal corresponding to the communication signal is received within a preset time period;

The second determining module is further configured to determine that the object information is a metal foreign object when no response signal is received within a preset time period.

In some embodiments of the present application, the detection module is also used to detect the position information of the metal foreign object when the object information is a metal foreign object;

The control module is also used to control the moving component to move the metal foreign object to a preset position according to the position information of the metal foreign object, wherein the preset position is a position where the magnetic field strength of the charging primary coil of the wireless charging device is lower than the preset strength.

The control device of the wireless charging device in the embodiment of the present application may be a device, or may be a component, an integrated circuit, or a chip in a terminal. The device may be a mobile electronic device or a non-mobile electronic device. Exemplarily, the mobile electronic device may be a mobile phone, a tablet computer, a notebook computer, a handheld computer, a vehicle electronic device, a wearable device, an ultra-mobile personal computer (ultra-mobile personal computer, UMPC), a netbook or a personal digital assistant (personal digital assistant). assistant, PDA), etc., non-mobile electronic devices can be servers, network attached storage (Network Attached Storage, NAS), personal computer (personal computer, PC), television (television, TV), teller machine or self-service machine, etc., this application Examples are not specifically limited.

The control device of the wireless charging device in the embodiment of the present application may be a device with an operating system. The operating system may be an Android operating system, an iOS operating system, or other possible operating systems, which are not specifically limited in this embodiment of the present application.

The control device for the wireless charging device provided in the embodiment of the present application can implement various processes implemented in the foregoing method embodiments, and details are not repeated here to avoid repetition.

In some embodiments of the present application, a readable storage medium is provided. Programs or instructions are stored on the readable storage medium. When the program or instructions are executed by a processor, the steps of the method provided in any of the above-mentioned embodiments are implemented. Therefore, the readable storage medium also includes all beneficial effects of the method in any one of the above embodiments, and to avoid repetition, details are not repeated here.

In the description of this specification, references to the terms "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific examples," or "some examples" are intended to mean that the implementation A specific feature, structure, material, or characteristic described by an embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present application. The scope of the application is defined by the claims and their equivalents.

Claims

A wireless charging device, comprising:

The casing includes a charging panel, and the charging panel is used to carry electric equipment;

The charging primary coil is arranged in the housing, the charging primary coil faces the electric device, and can be coupled with the charging secondary coil of the electric device, so as to transmit electric energy to the electric device;

A moving component is arranged on the charging panel;

A first detection module, at least part of the first detection module is located in the housing, and the first detection module is used to detect the position information of the charging secondary coil;

a controller, arranged in the casing, connected to the moving component and the first detection module, and used to control the moving component to move the position of the electric device according to the position information, so that the The location of the charging secondary coil matches the location of the charging primary coil.
The wireless charging device according to claim 1, further comprising:

A second detection module, connected to the controller, for detecting object information on the charging panel and position information corresponding to the object information;

The controller is further configured to control the moving component to move the metal foreign object to a preset position according to the position information of the metal foreign object when the object information is a metal foreign object.
The wireless charging device according to claim 1, wherein the number of the charging primary coils is N, and the positions of the N contact primary coils do not overlap, wherein N is a positive integer.
The wireless charging device according to any one of claims 1 to 3, further comprising:

The metal detection device is arranged on the charging panel, and the metal detection device has one or more of a temperature sensor, a pressure sensor, a capacitance detection sensor, an impedance detection sensor and a magnetic sensor.
The wireless charging device according to any one of claims 1 to 3, wherein the moving component comprises:

The transmission wheel is arranged on the upper surface of the charging panel;

The power part is connected with the transmission wheel and is used to drive the transmission wheel to rotate.
The wireless charging device according to claim 5, wherein the transmission wheels include X first transmission wheels and Y second transmission wheels, the transmission direction of the first transmission wheels is the first direction, and the transmission direction of the second transmission wheels is The transmission direction of the transmission wheel is the second direction, the angle range between the first transmission direction and the second transmission direction is: 45° to 135°, and X and Y are positive integers.
The wireless charging device according to claim 5, wherein the transmission wheel is a universal wheel.
A control method of a wireless charging device, used for controlling the wireless charging device according to any one of claims 1 to 7, the control method comprising:

Detect the position information of the charging secondary coil of the electrical equipment;

According to the position information, the moving component of the wireless charging device is controlled to move the position of the electric device, so that the position of the charging secondary coil matches the position of the charging primary coil.
The control method according to claim 8, wherein the number of the charging primary coils is N;

Said detecting the location information of the charging secondary coil of the electrical equipment includes:

controlling the N charging primary coils to send detection signals respectively, and acquiring N induction signals respectively generated by the charging secondary coils according to the N detection signals;

Among the N induction signals, according to the M target induction signals whose signal values are not 0, determine the corresponding M associated charging primary coils, and the M center position coordinates corresponding to the M associated charging primary coils, wherein M is a positive integer;

Establishing a corresponding distance matrix according to the N induced signals;

According to the distance matrix and the M center position coordinates, the current center position coordinates of the charging secondary coil are determined, and the position information of the charging secondary coil is determined according to the current center coordinates.
The control method according to claim 9, wherein, according to the position information, the moving component of the wireless charging device is controlled to move the position of the electric device, so that the position of the charging secondary coil is consistent with the position of the charging secondary coil. Match the location of the charging primary coil described above, including:

Among the M center position coordinates, determine the target center position coordinates;

According to the coordinates of the center position of the target and the coordinates of the center position of the target charging primary coil, the motion assembly is controlled to move the electric device so that the coordinates of the current center position of the charging secondary coil and the coordinates of the target center position match.
The control method according to any one of claims 8 to 10, wherein, before the detection of the position information of the charging secondary coil of the electric device, the control method further includes:

Detecting object information on the charging panel of the wireless charging device;

when the object information is detected, sending a communication signal through the charging primary coil;

If a response signal corresponding to the communication signal is received within a preset time period, determine that the object information is the electrical device;

If the response signal is not received within the preset time period, it is determined that the object information is a metal foreign object.
The control method according to claim 11, further comprising:

If the object information is the metal foreign object, detecting the position information of the metal foreign object;

According to the position information of the metal foreign object, the moving component is controlled to move the metal foreign object to a preset position, wherein the preset position is when the magnetic field strength of the charging primary coil of the wireless charging device is less than the preset strength Location.
A control device for a wireless charging device, used to control the wireless charging device according to any one of claims 1 to 7, the control device for the wireless charging device comprising:

The detection module is used to detect the position information of the charging secondary coil of the electrical equipment;

A control module, configured to control the moving component of the wireless charging device to move the position of the electric device according to the position information, so that the position of the charging secondary coil matches the position of the charging primary coil.
The control device for wireless charging equipment according to claim 13, wherein the number of the charging primary coils is N;

The control module is further configured to control the N charging primary coils to send detection signals respectively, and obtain N induction signals respectively generated by the charging secondary coils according to the N detection signals;

The control device of the wireless charging device further includes: a first determination module, configured to determine, among the N induced signals, the corresponding M associated charging primary coils according to the M target induced signals whose signal values are not 0, M center position coordinates corresponding to the M associated charging primary coils, where M is a positive integer;

The first determining module is further configured to establish a corresponding distance matrix according to the N induced signals;

The first determination module is further configured to determine the current center position coordinates of the charging secondary coil according to the distance matrix and the M center position coordinates, and determine the charging secondary coil according to the current center coordinates Coil location information.
The control device for a wireless charging device according to claim 14, wherein the first determining module is further configured to determine a target center position coordinate among the M center position coordinates;

The control module is further configured to control the movement component to move the electric device according to the coordinates of the target center position and the coordinates of the center position of the target charging primary coil, so that the current center position of the charging secondary coil The coordinates match the target center location coordinates.
The control device for a wireless charging device according to any one of claims 13 to 15, wherein the detection module is further configured to detect object information on the charging panel of the wireless charging device;

The control device of the wireless charging device further includes: a communication module, configured to send a communication signal through the charging primary coil when the object information is detected;

The second determination module is configured to determine that the object information is the electrical device when a response signal corresponding to the communication signal is received within a preset time period;

The second determination module is further configured to determine that the object information is a metal foreign object when the response signal is not received within the preset time period.
The control device for wireless charging equipment according to claim 16, wherein the detection module is further configured to detect the position information of the metal foreign object when the object information is the metal foreign object;

The control module is further configured to control the moving component to move the metal foreign object to a preset position according to the position information of the metal foreign object, wherein the preset position is the charging primary coil of the wireless charging device The position where the magnetic field strength is less than the preset strength.
A readable storage medium, storing programs or instructions on the readable storage medium, and implementing the steps of the control method according to any one of claims 8 to 12 when the programs or instructions are executed by a processor.