CN110867931B - Wireless charging module, wireless charging table and wireless charging method - Google Patents
Wireless charging module, wireless charging table and wireless charging method Download PDFInfo
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- CN110867931B CN110867931B CN201911253734.XA CN201911253734A CN110867931B CN 110867931 B CN110867931 B CN 110867931B CN 201911253734 A CN201911253734 A CN 201911253734A CN 110867931 B CN110867931 B CN 110867931B
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000001514 detection method Methods 0.000 claims abstract description 30
- 239000000758 substrate Substances 0.000 claims abstract description 22
- 239000000872 buffer Substances 0.000 claims description 19
- 230000017525 heat dissipation Effects 0.000 claims 1
- 230000008878 coupling Effects 0.000 description 8
- 238000010168 coupling process Methods 0.000 description 8
- 238000005859 coupling reaction Methods 0.000 description 8
- 238000006073 displacement reaction Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 239000010985 leather Substances 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The disclosure provides a wireless charging module, a wireless charging table and a wireless charging method. The wireless charging module comprises a control circuit, a detection plate, a wireless charging base and a moving mechanism. The detection plate is arranged corresponding to the tabletop and comprises a substrate and a plurality of magnetic sensors, and the magnetic sensors are electrically connected with the control circuit; the magnetic sensor is used for detecting the position of the equipment to be charged on the plane; the wireless charging base is used for wirelessly charging equipment to be charged; the mobile mechanism supports the wireless charging base; the control circuit is used for controlling the movement mechanism to work according to the positions, detected by the magnetic sensors, of the equipment to be charged, on the plane, so that the movement mechanism drives the wireless charging base to move to the position corresponding to the equipment to be charged. The wireless charging effectiveness can be improved through the scheme.
Description
Technical Field
The disclosure relates to the field of wireless charging, and in particular relates to a wireless charging module, a wireless charging table and a wireless charging method.
Background
The wireless charging technology can charge without using a charging wire, so that the convenience in charging the electronic equipment is improved. But requires that the electronic device to be charged be fixedly placed on a charging plane where the wireless charging base is fixed. Generally, the position of the transmitting coil in the wireless charging base is fixed, and when a user places a mobile phone on the plane of the wireless charging base, the situation of deviation of the placing position may exist, so that the charging efficiency is low and even the situation of incapability of charging is caused.
Disclosure of Invention
The wireless charging module can improve the effectiveness of wireless charging.
In order to solve the technical problems, the present disclosure adopts the following technical scheme:
according to one aspect of the present disclosure, the present disclosure proposes a wireless charging module for being installed under a desktop, the wireless charging module comprising:
a control circuit;
the detection plate is arranged corresponding to the tabletop and comprises a substrate and a plurality of magnetic sensors distributed on the substrate, and the magnetic sensors are electrically connected with the control circuit; the magnetic sensor is used for detecting the position of the equipment to be charged on the plane;
the wireless charging base is arranged on one side of the detection plate, which is away from the desktop; the wireless charging base is used for wirelessly charging the equipment to be charged;
the wireless charging base is supported by the moving mechanism, and the moving mechanism is electrically connected with the control circuit; the control circuit is used for controlling the moving mechanism to work according to the positions, detected by the magnetic sensors, of the equipment to be charged on the plane, so that the moving mechanism drives the wireless charging base to move to the position corresponding to the equipment to be charged.
According to another aspect of the disclosure, a wireless charging table is provided, the wireless charging table includes a table body, a tabletop disposed on top of the table body, and a wireless charging module, a containing position is formed between the tabletop and the table body, and the wireless charging module is contained in the containing position;
the detection plate of the wireless charging module is arranged on the lower side of the desktop.
According to another aspect of the present disclosure, a wireless charging method is proposed, in which a plurality of magnetic sensors for detecting a position of an object placed on the plane are provided on a substrate;
the method comprises the following steps:
obtaining detection results of the plurality of magnetic sensors;
determining the position of the object according to the detection results of the magnetic sensors;
moving a wireless charging base to a position matched with the position of the object according to the position of the object;
and controlling the wireless charging base to wirelessly charge the object.
According to the technical scheme, the positions of the equipment to be charged are detected by the plurality of magnetic sensors, the wireless charging base is moved to the position corresponding to the equipment to be charged through the moving mechanism, so that the coupling degree of the transmitting coil in the wireless charging base and the receiving coil in the equipment to be charged can be improved, the coupling degree of an electromagnetic field is improved, the electromagnetic energy transmission efficiency is improved, and the wireless charging stability is guaranteed.
And when the coupling degree of the transmitting coil and the receiving coil in the equipment to be charged is low, the transmitting coil is triggered to improve the transmitting power so as to ensure the receiving power of the receiving coil, so that the transmitting power of the transmitting coil is high, the temperature rise is high, and potential safety hazards are caused. In the wireless charging base, the coupling degree of the transmitting coil in the wireless charging base and the receiving coil in the equipment to be charged is higher, so that the power and heat of the transmitting coil can be reduced to a certain extent, the receiving efficiency of the receiving coil in the equipment to be charged is improved, the temperature rise of the transmitting coil and the receiving coil is reduced, and the charging safety of the equipment to be charged is improved.
In summary, the technical scheme of the disclosure can improve the effectiveness and safety of wireless charging.
Drawings
Figure 1 is a side view of a wireless charging table shown according to one embodiment;
FIG. 2 is a block diagram illustrating the circuit connections of a wireless charging module, according to one embodiment;
FIG. 3 is a partial structural top view of a sensing plate according to an embodiment;
fig. 4 is a schematic structural diagram of a wireless charging module in the wireless charging table corresponding to fig. 2;
FIG. 5 is a top view of FIG. 4;
fig. 6 is a flow chart illustrating an embodiment of a wireless charging method according to an embodiment.
Reference numerals illustrate:
11. a control circuit; 12. a detection plate; 121. a substrate; 122. a magnetic sensor; 13. a wireless charging base; 14. a moving mechanism; 143. a driving circuit; 15. a power supply unit; 123. a shift register; 141. a first guide rail; 142. a second guide rail;
21. a table body; 22. a tabletop; 211. a support plate; 23. the bits are contained.
Detailed Description
While this disclosure may be susceptible to embodiment in different forms, there is shown in the drawings and will herein be described in detail, specific embodiments thereof with the understanding that the present disclosure is to be considered as an exemplification of the principles of the disclosure and is not intended to limit the disclosure to that as illustrated herein.
Thus, rather than implying that each embodiment of the present disclosure must have the illustrated features, one feature indicated in this specification will be used to illustrate one of the features of an embodiment of the present disclosure. Furthermore, it should be noted that the present specification describes a number of features. Although certain features may be combined together to illustrate a possible system design, such features may be used in other combinations not explicitly described. Thus, unless otherwise indicated, the illustrated combinations are not intended to be limiting.
In the embodiments shown in the drawings, indications of orientation (such as up, down, left, right, front and rear) are used to explain the structure and movement of the various elements of the disclosure as opposed to absolute. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the description of the position of these elements changes, the indication of these directions changes accordingly.
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these example embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted.
Preferred embodiments of the present disclosure are further elaborated below in conjunction with the drawings of the present specification.
The embodiment of the disclosure provides a wireless charging module. The wireless charging module can be independently used for wirelessly charging electronic equipment, and can also be embedded into other devices, equipment or brackets. In an example, the wireless charging module is disposed at one side of a plane, may be disposed at a lower side of the plane, or may be disposed at a left side or right side of the plane when the plane extends in a vertical direction.
The plane may be a table top, a wall surface, or the like. In the following embodiments, the wireless charging module is used in a wireless charging table as an example.
Referring to fig. 1, fig. 1 is a side view of a wireless charging table according to an embodiment. In an embodiment, the wireless charging stand may include a table body 21, a tabletop 22 disposed on top of the table body 21, and a wireless charging module, where the tabletop 22 and the table body 21 can be enclosed to form a containing position 23, and the wireless charging module is contained in the containing position 23. In fig. 2, the table body 21 includes four legs, the table body 21 further includes a support plate 211, and a receiving cavity for receiving the wireless charging module is formed between the support plate 211 and the table top 22. A part of the wireless charging module may be fixedly disposed on the support plate 211. The desktop 22 may be divided into a wireless charging area in a certain area, and the wireless charging module may be correspondingly disposed below the wireless charging area, and may specifically be located at an orthographic projection of the wireless charging area. When the wirelessly chargeable electronic device is placed in the wireless charging area, the wireless charging module is capable of charging the electronic device.
In the following embodiments, embodiments of the wireless charging module will be described. Referring to fig. 2, fig. 2 is a side view of a wireless charging table according to an embodiment.
In one embodiment, the wireless charging module includes a control circuit 11, a detection board 12, a wireless charging base 13, and a moving mechanism 14. The detecting plate 12 is arranged corresponding to the table top 22, the detecting plate 12 comprises a substrate 121 and a plurality of magnetic sensors 122 distributed on the substrate 121, and the plurality of magnetic sensors 122 are electrically connected with the control circuit 11; the magnetic sensor 122 is used for detecting the position of the device to be charged on the desktop; the wireless charging base 13 is arranged on one side of the detection plate 12 away from the tabletop 22; the wireless charging base 13 is used for wirelessly charging equipment to be charged; the moving mechanism 14 is electrically connected with the control circuit 11, and the moving mechanism 14 supports the wireless charging base 13; the control circuit 11 is configured to control the movement mechanism 14 to operate according to the positions of the to-be-charged devices on the substrate 121 detected by the magnetic sensors 122, so that the movement mechanism 14 drives the wireless charging base 13 to move to a position corresponding to the to-be-charged devices.
The control circuit 11 may be a single chip microcomputer, an MCU, a CPU or a control chip. A single chip microcomputer is taken as an example for illustration. The singlechip has various I/O ports for the magnetic sensor 122 and the moving mechanism 14 to be electrically connected.
In one example, sensing plate 12 is positioned below tabletop 22 and sensing plate 12 may be positioned a distance from tabletop 22. The pickup plate 12 includes a substrate 121 and a plurality of magnetic sensors 122 provided on the substrate 121. The substrate 121 may be a PCB board herein. The substrate 121 may be a single PCB board or may be formed by combining a plurality of PCB boards.
The magnetic sensor 122 may be a magneto-resistive sensor, a hall sensor, or the like, which is capable of reacting to magnetic field changes. In one example, to improve the accuracy of detecting the position of the device to be charged, a magnetoresistive sensor is employed.
The magnetic sensor 122 adopted in the embodiment can efficiently determine the position of the wireless receiving coil in the equipment to be charged, so that the time for the wireless charging base 13 to traverse the position of the receiving coil is saved, and the influence of redundant heat energy generated when the optimal charging position is found on the stability of the wireless charging base 13 is avoided. The position of the receiving coil is determined in a physical mode, so that a software algorithm can be prevented from being used for processing feedback signals in the wireless charging process, and the risk of algorithm processing errors is reduced; therefore, when determining the charging position, the embodiment does not need to communicate with the wireless charging base 13 and the equipment to be charged, does not need to occupy a communication channel, and saves the communication resources of the equipment to be charged and the wireless charging module.
In particular, when in operation, a leather sheath can be sleeved on the equipment to be charged, and one or more magnetic pieces are arranged on the leather sheath. When a plurality of magnetic pieces are arranged, the plurality of magnetic pieces can be arranged corresponding to four corners of the equipment to be charged; when one magnetic member is provided, the magnetic member may be provided corresponding to the position of the center or the receiving coil of the device to be charged.
When the device to be charged is placed on the table top 22, when the magnetic sensor 122 on the lower detection plate 12 of the table top 22 corresponding to the position of the magnetic piece senses the magnetic piece, the level output by the output end of the magnetic sensor 122 will be overturned, and the overturned level is detected by the control circuit 11, so that the position of the magnetic piece is detected.
Referring to fig. 3, fig. 3 is a top view of a portion of an exemplary detector board 12. The arrangement of the magnetic members on the substrate 121 may be uniform or non-uniform. In one embodiment, in order to improve the accuracy of detecting the placement position of the device to be charged, a plurality of magnetic sensors 122 are disposed in an array on the substrate 121.
In one example, two adjacent magnetic sensors 122 are arranged 2cm apart in the lateral direction, and two adjacent magnetic sensors 122 are also arranged 2cm apart in the longitudinal direction. When the charge level face length is 350mm×350mm, 17×17 magnetic sensors 122 are required.
When the number of the I/O ports of the singlechip is enough, all the magnetic sensors 122 can work simultaneously, and the output ends of all the magnetic sensors 122 are connected to different I/O ports of the singlechip. In an embodiment, when the I/O port resources of the singlechip are fewer or interface resources need to be saved. The following time-sharing scheme may be employed. Specifically, the connection lines between the control circuit 11 and the plurality of magnetic sensors 122 include a plurality of power lines and a plurality of ground lines, which are all electrically connected to the control circuit 11; the magnetic sensor 122 has a power supply terminal, a ground terminal, and an output terminal; the power line is arranged corresponding to each row of magnetic sensors 122, and the grounding line is arranged corresponding to each column of magnetic sensors 122; the power ends of each row of magnetic sensors 122 are connected to the same power line, and the grounding ends of each column of magnetic sensors 122 are connected to the same grounding line; the ground terminals of the magnetic sensors 122 are electrically connected to the control circuit 11.
The magnetic sensors 122 are arranged in an array, and a power line is disposed corresponding to each row, and a ground line is disposed corresponding to each column. When the designated magnetic sensor 122 is required to operate, the power line of the corresponding row of the designated magnetic sensor 122 may be powered on, and the ground line of the corresponding column may be connected to ground, so as to enable the magnetic sensor 122 to continue operating. Therefore, one magnetic sensor 122 can be sequentially gated to work, so that the aim of time-sharing reading the detection result of the magnetic sensor 122 can be fulfilled.
For example, the first row is powered on, and the first column is grounded, so that the magnetic sensor 122 located first in the first row is selected to operate, and the level inversion condition of the magnetic sensor 122 is read. Then, at intervals of 10 milliseconds, the power supply line of the first row is powered up, and the ground line of the second column is grounded, thereby selecting the magnetic sensor 122 located second in the first row to operate … …. The magnetic sensors 122 of each row may be sequentially powered up and then the magnetic sensors 122 of the second row may be sequentially powered up until all of the magnetic sensors 122 are polled.
In this embodiment, the control circuit 11 only needs to control the working conditions of the power line and the ground line, so as to achieve the purpose of detecting the position of the device to be charged. To further save resources of the control interface of the control circuit 11. In one embodiment, the wireless charging module further includes a shift buffer 123; the control circuit 11 is electrically connected with a power line and a ground line through a shift buffer 123; the shift buffer 123 is configured to enable the plurality of magnetic sensors 122 to operate sequentially in a power-on manner according to a control signal sent by the control circuit 11. A shift register 123 chip, or some other chip having the function of shift register 123 may be employed.
In an example, for 8×8 magnetic sensors 122, two shift buffers 123 may be configured, one shift buffer 123 corresponding to controlling the power up of the power line and one shift buffer 123 corresponding to controlling the ground of the ground line. For example, for the shift buffer 123 with 8-bit serial input and parallel output, the control chip inputs serial signals to the shift buffer 123 through one port, and the shift buffer 123 outputs 8 paths of signals in parallel to correspondingly control the power-up of 8 power lines in the 8×8 magnetic sensors 122. The control chip inputs serial signals thereto through another port, and the shift buffer 123 outputs 8 signals in parallel to control the grounding of 8 grounding wires corresponding to 8×8 magnetic sensors 122 accordingly. The other port of the control chip is used for being connected with the output ends of all the magnetic sensors 122 so as to sequentially read the level of each magnetic sensor 122 in a time sharing manner.
In the above embodiment, the electrical connection manner between the control circuit 11 and the magnetic sensor 122 can effectively save the interface resources of the control circuit 11, so that a certain number of output values of the magnetic sensor 122 can be read by using fewer interfaces, thereby greatly improving the convenience of design.
After the control circuit 11 determines the position of the device to be charged according to the detection result of the magnetic sensor 122, the control circuit 11 sends a control signal to the displacement mechanism to control the distance that the displacement mechanism needs to move. The displacement mechanism is used for bearing the wireless charging base 13 to move to a proper position, so that the wireless charging base 13 can be aligned with equipment to be charged, and effective performance of wireless charging is ensured.
Please refer to fig. 4 and 5; fig. 4 is a schematic structural diagram of a wireless charging module in the wireless charging table corresponding to fig. 2; fig. 5 is a top view of fig. 4. In one embodiment, the moving mechanism 14 includes a driving circuit 143, a first driving motor, a second driving motor, and a first rail 141, a second rail 142 electrically connected to the driving circuit 143; the driving circuit 143 is electrically connected with the control circuit 11 to receive the control signal sent by the control circuit 11 and drive the first driving motor and the second driving motor to work according to the control signal; the first guide rail 141 is disposed on the second guide rail 142, and the first driving motor is used for driving the first guide rail 141 to move along the second guide rail 142; the wireless charging base 13 is disposed on the first rail 141, and the second driving motor is used for driving the wireless charging base 13 to move along the second rail 142.
The driving circuit 143 includes a signal processing and amplifying circuit to process and amplify the control signal from the control circuit 11. The signals processed by the driving circuit 143 can drive the first driving motor and the second driving motor to move.
The first rail 141 and the second rail 142 may be at 90 ° to each other. The first rail 141 and the second rail 142 are positioned and length-set to be capable of moving the wireless charging base 13 to substantially cover the wireless charging area corresponding to the wireless charging area on the table top 22.
In an example, the first rail 141 may be fixedly disposed on the support plate 211 of the table body 21, and a sliding bar corresponding to the second rail 142 may be provided on the first rail 141 so that the first rail 141 can slide along the second rail 142. The first driving motor is used for driving the first guide rail 141 to slide.
Similarly, the wireless charging base 13 is provided with a sliding bar corresponding to the first guide rail 141, so that the wireless charging base 13 can slide along the first guide rail 141. The second driving motor is used to drive the first rail 141 to slide.
After reading the detection result of the magnetic sensor 122, the control circuit 11 determines the center position of the device to be charged or the position of the receiving coil according to the detection result. In an example, the magnetic pieces are disposed at four corners of the device to be charged, and the control circuit 11 calculates the center position of the device to be charged or the coordinates corresponding to the receiving coil according to the positions of the magnetic pieces disposed at the four corners of the device to be charged and a preset algorithm, and then determines the distance and the movement track of the wireless charging base 13 to be moved after obtaining the coordinates of the current wireless charging base 13.
In one embodiment, the control circuit 11 is configured to calculate a first duration of movement of the first rail 141 along the second rail 142 at a first predetermined speed and calculate a second duration of movement of the wireless charging base 13 along the second rail 142 at a second predetermined speed according to the position to which the wireless charging base 13 is to be moved.
Specifically, firstly, the difference between the lateral coordinate of the position to which the wireless charging base 13 is to be moved and the lateral coordinate of the current position of the wireless charging base 13 is calculated, and then the ratio of the difference to the first preset speed is utilized, so as to calculate the first duration that the first guide rail 141 needs to move along the second guide rail 142 at the first preset speed. And further calculates a difference between the longitudinal coordinate of the position to which the wireless charging base 13 is to be moved and the longitudinal coordinate of the current position of the wireless charging base 13, and then calculates a second duration in which the first rail 141 needs to be moved along the second rail 142 at a second preset speed by using a ratio of the difference to the second preset speed. The first preset speed and the second preset speed may be the same value or different values.
In an embodiment, the wireless charging module may further include a power supply unit 15, and the wireless charging module further includes the power supply unit 15, where the power supply unit 15 is electrically connected with the control circuit 11, the moving mechanism 14, and the wireless charging base 13 to supply power to the control circuit 11, the moving mechanism 14, and the wireless charging base 13.
In an example, the power supply unit 15 may have a power supply interface and a power supply processing circuit. When the wireless charging module works, a power supply is connected to the wireless charging module through a power supply interface, and the power supply is processed through a power supply processing circuit to supply power to the control circuit 11, the moving mechanism 14 and the wireless charging base 13.
In another example, the power supply unit 15 may also include a battery, so that the wireless charging module may still be able to wirelessly charge the electronic device with the power of the battery without having access to mains.
According to the technical scheme, the magnetic sensor 122 array is utilized to detect the position of the equipment to be charged, the wireless charging base 13 is moved to the position corresponding to the equipment to be charged through the moving mechanism 14, so that the coupling degree of the transmitting coil in the wireless charging base 13 and the receiving coil in the equipment to be charged can be improved, the coupling degree of an electromagnetic field is improved, the electromagnetic energy transmission efficiency is improved, and the wireless charging stability is guaranteed.
And when the coupling degree of the transmitting coil and the receiving coil in the equipment to be charged is low, the transmitting coil is triggered to improve the transmitting power so as to ensure the receiving power of the receiving coil, so that the transmitting power of the transmitting coil is high, the temperature rise is high, and potential safety hazards are caused. In the present disclosure, since the coupling degree of the transmitting coil in the wireless charging base 13 and the receiving coil in the device to be charged is higher, the power and heat of the transmitting coil can be reduced to a certain extent, the receiving efficiency of the receiving coil in the device to be charged is improved, the temperature rise of the transmitting coil and the receiving coil is reduced, the charging safety of the device to be charged is improved,
in addition, the wireless charging base 13 can quickly reach the optimal charging position through the double guide rails, so that the problem that the equipment to be charged occupies a channel due to arrangement deviation and repeatedly sends a power request instruction to the control circuit 11 can be reduced, and the problems that the FOD (foreign object detection) causes charging failure or cannot be charged and the like can be avoided.
In conclusion, the wireless charging effectiveness and safety can be improved through the technical scheme.
The present disclosure also proposes a wireless charging method, which will be described in the following embodiments. The wireless charging method is described herein as being applied to the wireless charging module, and it is understood that the wireless charging method is not limited to being applied to the wireless charging module. Referring to fig. 6, fig. 6 is a flowchart illustrating an embodiment of a wireless charging method according to an embodiment.
In one embodiment, a plurality of magnetic sensors 122 are disposed on the substrate 121, and the magnetic sensors 122 are used to detect the position of the object placed on the substrate 121;
the method comprises the following steps:
31, acquiring detection results of the plurality of magnetic sensors 122;
32, determining the position of the object according to the detection results of the plurality of magnetic sensors 122;
33, moving the wireless charging base 13 to a position matching the position of the object according to the position of the object;
34, controlling the wireless charging base 13 to wirelessly charge the object.
Reference may be made to the related embodiments in the wireless charging module described above with respect to the arrangement of the magnetic sensor 122 and the detection scheme.
Here, the magnetic sensor 122 can sense an object with a magnetic member. In an embodiment, in order to enable the wireless charging module to charge the chargeable electronic device, and ensure that wireless charging is performed, in an embodiment, before the step of controlling the wireless charging base 13 to wirelessly charge the device to be charged, the method further includes:
detecting an attribute of the object;
when the attribute of the object is matched with the preset attribute, determining that the object is chargeable equipment;
control wireless charging base 13 carries out wireless charging to the equipment that waits to charge, includes:
when the object is a chargeable device, the wireless charging base 13 is controlled to wirelessly charge the device to be charged.
When the object is a non-chargeable device, the wireless charging base 13 is controlled not to wirelessly charge the device to be charged.
In one example, the attributes of an object can be divided into two broad categories, one being a chargeable device and one being a non-chargeable device. The preset attributes here may be specific types of chargeable devices, such as cell phones, charger, watches, etc. When the object matches one of the specific types of chargeable devices, then the object is determined to be a chargeable device.
The steps in this embodiment may be performed before step 34. When executed prior to step 34, if the object is determined to be a non-chargeable device, then there is no need to control the displacement mechanism to move.
In another embodiment, after the displacement mechanism drives the wireless charging base 13 to move to the lower side of the object, the wireless charging base 13 communicates with the object, if the communication is successful, the object is a wireless chargeable electronic device, and if the communication is unsuccessful, the object cannot be charged wirelessly.
Further, the object has a plurality of magnetic elements thereon, and the magnetic sensor 122 is configured to sense positions of the plurality of magnetic elements; 32, moving the wireless charging base 13 to a position matching the position of the object according to the position of the object, comprising:
acquiring the positions of a plurality of magnetic pieces sensed by the magnetic sensor 122;
determining a center point of the object according to the positions of the plurality of magnetic pieces;
the wireless charging base 13 is moved such that the center of the wireless charging base 13 corresponds to the center point of the object.
After reading the detection result of the magnetic sensor 122, the control circuit 11 determines the center position of the device to be charged or the position of the receiving coil according to the detection result. In an example, the magnetic pieces are disposed at four corners of the device to be charged, and the control circuit 11 calculates the center position of the device to be charged or the coordinates corresponding to the receiving coil according to the positions of the magnetic pieces disposed at the four corners of the device to be charged and a preset algorithm, and then determines the distance and the movement track of the wireless charging base 13 to be moved after obtaining the coordinates of the current wireless charging base 13.
Moving the wireless charging base 13 such that the center of the wireless charging base 13 corresponds to the center point of the object, comprising:
according to the center point of the object, determining the longitudinal movement distance and the transverse movement distance of the wireless charging base 13 to be moved;
acquiring a preset speed of the wireless charging base 13 moving longitudinally;
determining a first time length of the wireless charging base 13 moving along the longitudinal direction according to the longitudinal moving distance of the wireless charging base 13 and a preset speed of the wireless charging base 13 moving along the longitudinal direction;
determining a second time length of the wireless charging base 13 moving along the transverse direction according to the transverse moving distance of the wireless charging base 13 and a preset speed of the wireless charging base 13 moving along the transverse direction;
the mobile wireless charging dock 13 is moved longitudinally for a first length of time and laterally for a second length of time.
Specifically, firstly, the difference between the lateral coordinate of the position to which the wireless charging base 13 is to be moved and the lateral coordinate of the current position of the wireless charging base 13 is calculated, and then the ratio of the difference to the first preset speed is utilized, so as to calculate the first duration that the first guide rail 141 needs to move along the second guide rail 142 at the first preset speed. And further calculates a difference between the longitudinal coordinate of the position to which the wireless charging base 13 is to be moved and the longitudinal coordinate of the current position of the wireless charging base 13, and then calculates a second duration in which the first rail 141 needs to be moved along the second rail 142 at a second preset speed by using a ratio of the difference to the second preset speed. The first preset speed and the second preset speed may be the same value or different values.
In the following embodiments, embodiments of a wireless charging control module corresponding to a wireless charging method will be described.
In one embodiment, a plurality of magnetic sensors 122 are disposed on the substrate 121, and the magnetic sensors 122 are used to detect the position of the object placed on the substrate 121;
the wireless charging control module includes:
an acquisition unit configured to acquire detection results of the plurality of magnetic sensors 122;
a position determining unit for determining a position of the object based on detection results of the plurality of magnetic sensors 122;
a movement control unit for moving the wireless charging base 13 to a position matching the position of the object according to the position of the object;
and the charging control unit is used for controlling the wireless charging base 13 to wirelessly charge the object.
In one embodiment, the object has a plurality of magnetic elements thereon, and the magnetic sensor 122 is configured to sense positions of the plurality of magnetic elements;
a position determining unit, configured to obtain positions of the plurality of magnetic pieces sensed by the magnetic sensor 122;
a position determining unit for determining a center point of the object based on positions of the plurality of magnetic members;
and a movement control unit for moving the wireless charging base 13 such that the center of the wireless charging base 13 corresponds to the center point of the object.
In one embodiment, the movement control unit is configured to determine a longitudinal movement distance and a lateral movement distance of the wireless charging base 13 to be moved according to a center point of the object;
the wireless charging control module further includes:
a moving speed obtaining unit for obtaining a preset speed of the wireless charging base 13 moving longitudinally;
a movement duration determining unit, configured to determine a first duration of movement of the wireless charging base 13 along the longitudinal direction according to a longitudinal movement distance of the wireless charging base 13 and a preset speed of movement along the longitudinal direction;
the second duration of the wireless charging base 13 moving along the transverse direction is determined according to the transverse moving distance of the wireless charging base 13 and the preset speed of the wireless charging base 13 moving along the transverse direction;
the mobile control unit is used for moving the wireless charging base 13 for a first time length along the longitudinal direction and a second time length along the transverse direction.
In an embodiment, the wireless charging control module further comprises:
an attribute detection unit configured to detect an attribute of an object;
a determining unit configured to determine that the object is a chargeable device when the attribute of the object matches a preset attribute;
and the charging control unit is used for controlling the wireless charging base 13 to wirelessly charge the equipment to be charged when the object is chargeable equipment.
In an exemplary embodiment of the present disclosure, a computer-readable storage medium having stored thereon a program product capable of implementing the method described above in the present specification is also provided. In some possible implementations, various aspects of the disclosure may also be implemented in the form of a program product comprising program code for causing a terminal device to carry out the steps according to the various exemplary embodiments of the disclosure as described in the foregoing examples section of this specification, when the program product is run on the terminal device.
While the present disclosure has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration rather than of limitation. As the present disclosure may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.
Claims (13)
1. A wireless charging module, the wireless charging module comprising:
a control circuit;
the detection plate is arranged on one side of a plane and comprises a substrate and a plurality of magnetic sensors distributed on the substrate, and the magnetic sensors are electrically connected with the control circuit; the magnetic sensor is used for detecting the position of the equipment to be charged on the plane;
the wireless charging base is arranged on one side of the detection plate, which is away from the plane; the wireless charging base is used for wirelessly charging the equipment to be charged;
the wireless charging base is supported by the moving mechanism, and the moving mechanism is electrically connected with the control circuit; the control circuit is used for controlling the moving mechanism to work according to the positions, detected by the magnetic sensors, of the equipment to be charged on the plane, so that the moving mechanism drives the wireless charging base to move to the position corresponding to the receiving coil of the equipment to be charged;
the connecting circuit between the control circuit and the magnetic sensors comprises a plurality of power lines and a plurality of grounding lines which are electrically connected with the control circuit;
the detection plate also comprises two shift buffers; the control circuit is electrically connected with the power lines through one shift buffer and is electrically connected with the grounding lines through the other shift buffer; the shift register is applicable to serial input and parallel output;
the shift buffer is used for outputting signals in parallel according to serial signals sent by the control circuit through one port so as to control a plurality of power lines in the magnetic sensor to be electrified in sequence;
the other shift buffer is used for outputting signals in parallel according to serial signals sent by the control circuit through the other port so as to control the plurality of grounding wires to be grounded in sequence, and thus the plurality of magnetic sensors are controlled to work in sequence; the other port is used for being connected with the output ends of the magnetic sensors so as to sequentially read the level of each magnetic sensor in a time-sharing mode.
2. The wireless charging module of claim 1, wherein the plurality of magnetic sensors are arranged in an array on the substrate.
3. The wireless charging module of claim 2, wherein the magnetic sensor has a power terminal, a ground terminal, and an output terminal;
the power ends of each row of magnetic sensors are connected to the same power line, and the grounding ends of each column of magnetic sensors are connected to the same grounding line;
the grounding ends of the magnetic sensors are electrically connected with the control circuit.
4. The wireless charging module of claim 1, wherein the plurality of magnetic sensors are configured to detect the position of a plurality of magnetic elements disposed on the device to be charged;
the control circuit is used for controlling the wireless charging base to move to a position corresponding to the receiving coil of the equipment to be charged according to the positions of the magnetic elements.
5. The wireless charging module of claim 1, wherein the movement mechanism comprises a drive circuit, a first drive motor, a second drive motor, and a first rail, a second rail electrically connected to the drive circuit;
the driving circuit is electrically connected with the control circuit to drive the first driving motor and the second driving motor to work according to the control signals received from the control circuit;
the first guide rail is arranged on the second guide rail, and the first driving motor is used for driving the first guide rail to move along the second guide rail;
the wireless charging base is arranged on the first guide rail, and the second driving motor is used for driving the wireless charging base to move along the first guide rail.
6. The wireless charging module of claim 5, wherein the control circuit is further configured to calculate a first length of time the first rail moves along the second rail at a first predetermined speed and calculate a second length of time the wireless charging base moves along the second rail at a second predetermined speed based on a position to which the wireless charging base is to be moved.
7. The wireless charging module of claim 1, further comprising a power supply unit electrically connected to the control circuit, the movement mechanism, the wireless charging base to power the control circuit, the movement mechanism, the wireless charging base.
8. A wireless charging table, which is characterized by comprising a table body, a tabletop arranged on the top of the table body, and a wireless charging module as claimed in any one of claims 1 to 7, wherein a containing position is formed between the tabletop and the table body, and the wireless charging module is contained in the containing position;
the detection plate of the wireless charging module is arranged on the lower side of the desktop.
9. The wireless charging table of claim 8, wherein the table body comprises a support plate, wherein the Rong Zhiwei is formed between the support plate and the table top, and wherein the support plate supports the wireless charging module;
a plurality of heat dissipation holes are formed in the supporting plate.
10. A wireless charging method is characterized in that a plurality of magnetic sensors are arranged on a substrate, and the magnetic sensors are used for detecting the position of an object placed on a plane;
the method comprises the following steps:
obtaining detection results of the plurality of magnetic sensors;
determining the position of the object according to the detection results of the magnetic sensors;
moving a wireless charging base to a position matched with the position of the object according to the position of the object;
controlling the wireless charging base to wirelessly charge the object;
the magnetic sensors are connected with the control circuit through a plurality of power lines and a plurality of grounding lines; the control circuit is electrically connected with the power lines through one shift buffer and is electrically connected with the grounding lines through the other shift buffer; the shift register is applicable to serial input and parallel output;
the shift buffer is used for outputting signals in parallel according to serial signals sent by the control circuit through one port so as to control a plurality of power lines in the magnetic sensor to be electrified in sequence;
the other shift buffer is used for outputting signals in parallel according to serial signals sent by the control circuit through the other port so as to control the plurality of grounding wires to be grounded in sequence, and thus the plurality of magnetic sensors are controlled to work in sequence; the other port is used for being connected with the output ends of the magnetic sensors so as to sequentially read the level of each magnetic sensor in a time-sharing mode.
11. The method of claim 10, wherein the object has a plurality of magnetic elements thereon, the plurality of magnetic sensors for sensing the positions of the plurality of magnetic elements; the mobile wireless charging base to a position matching the position of the object according to the position of the object comprises:
acquiring the positions of the plurality of magnetic pieces sensed by the magnetic sensor;
determining the position of a receiving coil in the object according to the positions of the plurality of magnetic pieces;
and moving the wireless charging base to a position of a transmitting coil of the wireless charging base corresponding to a receiving coil in the object.
12. The method of claim 10, wherein the moving the wireless charging base to a location of a transmitting coil of the wireless charging base corresponding to a receiving coil in the object comprises:
according to the position of the receiving coil in the object, determining the longitudinal movement distance and the transverse movement distance of the wireless charging base to be moved;
acquiring a preset speed of the wireless charging base moving longitudinally;
determining a first time length of the wireless charging base moving longitudinally according to the longitudinal moving distance of the wireless charging base and a preset speed of the wireless charging base moving longitudinally;
determining a second time length of the wireless charging base moving along the transverse direction according to the transverse moving distance of the wireless charging base and a preset speed of the wireless charging base moving along the transverse direction;
and moving the wireless charging base for a first time period along the longitudinal direction and a second time period along the transverse direction.
13. The method of any one of claims 10 to 12, wherein prior to the step of controlling the wireless charging dock to wirelessly charge the object, the method further comprises:
detecting an attribute of the object;
when the attribute of the object is matched with a preset attribute, determining that the object is chargeable equipment;
the controlling the wireless charging base to wirelessly charge the object includes:
when the object is chargeable equipment, the wireless charging base is controlled to wirelessly charge the object.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911253734.XA CN110867931B (en) | 2019-12-09 | 2019-12-09 | Wireless charging module, wireless charging table and wireless charging method |
| PCT/CN2020/134033 WO2021115213A1 (en) | 2019-12-09 | 2020-12-04 | Wireless charging module, wireless charging table, and wireless charging method |
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| CN201911253734.XA CN110867931B (en) | 2019-12-09 | 2019-12-09 | Wireless charging module, wireless charging table and wireless charging method |
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| CN113452147B (en) * | 2020-03-26 | 2024-07-30 | Oppo广东移动通信有限公司 | Wireless charging box and wireless charging system |
| CN113904464B (en) * | 2020-06-22 | 2024-07-12 | Oppo广东移动通信有限公司 | Wireless charging module, wireless charging device and electronic equipment |
| CN113852219A (en) * | 2020-06-28 | 2021-12-28 | 北京小米移动软件有限公司 | Wireless charging system and wireless charging implementation method |
| CN111864845B (en) * | 2020-07-27 | 2022-02-15 | 深圳创维－Rgb电子有限公司 | Wireless charging device and wireless charging control method |
| CN113100567B (en) * | 2021-04-14 | 2022-08-02 | 张扬 | Wireless charging table and charging method |
| CN113517766B (en) * | 2021-05-19 | 2024-05-14 | 广东工业大学 | Dynamically-adjusted wireless charging device and control method thereof |
| CN114156973B (en) * | 2021-11-11 | 2024-07-02 | 深圳市贝兰德科技有限公司 | Mobile control mobile phone wireless charging control method |
| CN114089402B (en) * | 2021-12-27 | 2024-10-11 | 上海新漫传感科技有限公司 | Modularized automatic cabin outlet unit and device |
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| WO2021115213A1 (en) | 2021-06-17 |
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