CN218102733U - Wireless emitter and wireless table that charges that charge - Google Patents

Abstract

The embodiment of the application discloses a wireless charging transmitting device and a wireless charging table, wherein the wireless charging transmitting device is used for charging a receiving device and comprises a transmitting coil, a driving assembly, a demodulator and a microprocessor; the transmitting coil is used for transmitting corresponding electromagnetic signals according to the load information modulated by the receiving device; the driving assembly is connected with the transmitting coil to drive the transmitting coil to move; the demodulator is electrically connected with the transmitting coil and is used for demodulating electromagnetic signals of the transmitting coil, wherein the electromagnetic signals contain signal intensity information; the microprocessor is electrically connected with the demodulator and the driving assembly and is used for controlling the driving assembly to drive the transmitting coil to move according to the signal intensity information so as to enable the transmitting coil to be initially aligned with the receiving device. The embodiment of the application controls the driving assembly to drive the transmitting coil to move by detecting the signal intensity information transmitted by the receiving device, thereby improving the coupling degree of the wireless charging transmitting device and the receiving device, improving the charging efficiency and simultaneously reducing the requirement on alignment precision.

Description

Wireless emitter and wireless table that charges that charge

Technical Field

The application relates to the wireless field of charging, especially relates to a wireless emitter and wireless table of charging that charge.

Background

In the related art, the wireless charger can wirelessly charge devices such as a mobile phone, but the mobile phone and the wireless charger need to be aligned to charge, and when the wireless charger is used, the mobile phone placing accuracy is high.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a wireless emitter and wireless table that charges, can improve the technical problem among the above-mentioned correlation technique.

In a first aspect, an embodiment of the present application provides a wireless charging transmitting device, configured to charge a receiving device, where the wireless charging transmitting device includes a transmitting coil, a driving component, a demodulator, and a microprocessor; the transmitting coil is used for transmitting corresponding electromagnetic signals according to the load information modulated by the receiving device; the driving assembly is connected with the transmitting coil to drive the transmitting coil to move; the demodulator is electrically connected with the transmitting coil and used for demodulating the electromagnetic signals of the transmitting coil, wherein the electromagnetic signals contain signal intensity information; and the microprocessor is electrically connected with the demodulator and the driving assembly and is used for controlling the driving assembly to drive the transmitting coil to move according to the signal intensity information so as to enable the transmitting coil to initially align to the receiving device.

In some exemplary embodiments, the wireless charging transmitting apparatus further includes: and the Q value detection unit is connected with the microprocessor and used for detecting the Q value of the transmitting coil, and the microprocessor is also used for controlling the driving component to drive the transmitting coil to move according to the Q value of the transmitting coil so as to enable the transmitting coil to align at the receiving device again.

In some exemplary embodiments, the wireless charging transmitting apparatus further includes: and the driver is electrically connected with the transmitting coil and is used for driving the transmitting coil to generate the corresponding electromagnetic signal.

In some exemplary embodiments, the wireless charging transmitting apparatus further comprises: and the proximity switch is electrically connected with the microprocessor and used for detecting whether an object is close to or abutted against the wireless charging transmitting device.

In some exemplary embodiments, the proximity switch includes an infrared type proximity switch and a capacitive type proximity switch.

In some exemplary embodiments, the driving assembly includes: a first driving member having a first rotating shaft; one end of the first transmission cable is connected with the transmitting coil, the other end of the first transmission cable is wound on the first rotating shaft, and the first driving piece is used for driving the transmitting coil to move towards a first direction; the second driving piece is provided with a second rotating shaft; and one end of the second transmission cable is connected with the transmitting coil, the other end of the second transmission cable is wound on the second rotating shaft, the second driving piece is used for driving the transmitting coil to move towards a second direction, and the first direction is opposite to the second direction.

In some exemplary embodiments, the driving assembly further comprises: the first winding disc is arranged on the first rotating shaft, and the first rotating shaft drives the first winding disc to rotate so as to wind the first transmission cable on the first winding disc; and the second winding roll is arranged on the second rotating shaft, and the second rotating shaft drives the second winding roll to rotate so as to wind the second transmission cable on the second winding roll.

In some exemplary embodiments, the wireless charging transmitting apparatus further includes: the supporting plate is connected with the first transmission cable and the second transmission cable, and the transmitting coil is arranged on the supporting plate.

In some exemplary embodiments, the wireless charging transmitting apparatus further includes: the supporting plate is arranged on the guide sliding rail in a sliding mode, and the guide sliding rail is arranged along the first direction.

In a second aspect, an embodiment of the present application provides a table, which includes a table top, supporting legs, and a wireless charging and transmitting device as described in any one of the above embodiments; the table top plate is provided with an accommodating space; the supporting legs are arranged at the bottom of the desktop plate and used for supporting the desktop plate; the wireless charging transmitting device is arranged in the accommodating space.

Has the advantages that: in the wireless transmitting device that charges of this application embodiment, through the signal strength information that detects the receiving arrangement transmission, control drive assembly drives transmitting coil and removes to improve the coupling degree of wireless transmitting device and the receiving arrangement that charges, improve charge efficiency, can also reduce the requirement of receiving arrangement and the alignment accuracy of wireless transmitting device that charges simultaneously.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a wireless charging and transmitting device according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a wireless charging transmitting device according to another embodiment of the present application;

fig. 3 is a schematic structural diagram of a wireless charging transmitting device according to another embodiment of the present application;

fig. 4 is a block diagram of a wireless charging transmitter and receiver according to an embodiment of the present application;

FIG. 5 is an enlarged schematic view of the first drive member of FIG. 1;

FIG. 6 is an enlarged schematic view of the second drive member of FIG. 1;

fig. 7 is a schematic diagram of a wireless charging table according to an embodiment of the present application.

Description of reference numerals: 100. a wireless charging transmitting device; 110. a transmitting coil; 121. a first driving member; 122. a first drive cable; 123. a second driving member; 124. a second drive cable; 125. a first reel; 126. a second take-up reel; 130. a control module; 131. a microprocessor; 132. a demodulator; 133. a Q value detection unit; 140. a proximity switch; 141. an infrared proximity switch; 142. a capacitive proximity switch; 150. a support plate; 160. a guide slide rail; 170. a driver; 200. a receiving device; 210. a receiving coil; 220. a load leveling unit; 300. a wireless charging table; 310. a table top plate; 310a, an accommodating space; 320. supporting legs; AA. A first direction; BB. A second direction.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

The Qi protocol is a Wireless charging standard introduced by the international Wireless Power Consortium (WPC) for facilitating mutual compatibility and unification of Wireless charging devices. Typically, the transmitting device and the receiving device are wirelessly charged via the Qi protocol.

The Qi protocol supports communication from a receiving device to a transmitting device, the receiving device passing information to the transmitting device to prepare and control the transfer of electrical energy between the transmitting device and the receiving device. That is, the receiving device may perform load modulation, the receiving device provides load information to the transmitting device, and the transmitting device adapts the energy transfer according to the requirements of the receiving device.

Specifically, the transmitting device comprises a transmitting coil and a demodulator. The receiving device comprises a receiving coil and a load adjusting unit.

The load adjusting unit is used for adjusting the required load on the receiving coil, and then the transmitting coil is matched with the corresponding electromagnetic signal according to the required load of the receiving coil. The load adjusting unit may modulate the communication data by changing a frequency, an amplitude, or a phase when adjusting the load required by the receiving coil. The receiving coil is used for receiving the induction power generated by the transmitting coil and providing the received induction power for a user such as a battery.

The demodulator is used for demodulating the electromagnetic signals. The current or voltage on the transmitting coil may be sensed, for example, by a sensing unit (current/voltage sensor), and the demodulator demodulates a parameter (e.g., frequency, amplitude, or phase) variation of the current or voltage of the sensed signal into communication data.

In other words, the receiving device is coupled with the transmitting device, and the receiving device and the transmitting device transmit power energy through the alternating magnetic field and also transmit the power energy through the alternating magnetic field as a data carrier to transfer communication data.

Based on the above communication method, the communication flow of Qi protocol mainly includes several stages:

1. a detection phase in which the transmitting device is in a standby mode but the transmitting device senses intermittently to detect whether a receiving device may be present.

2. And a trial-on stage, wherein if the transmitting device detects that the receiving device possibly exists, the trial-on stage is carried out, wherein the transmitting device generates an alternating magnetic field, and after the receiving device senses the alternating magnetic field, the signal intensity information is sent to the transmitting device. The signal strength information is an indication of the degree of coupling between the transmitting device coil and the receiving device coil. After receiving the signal strength information, the transmitting device will maintain the working state and enter the next stage.

3. And a negotiation stage, wherein the receiving device and the transmitting device negotiate to determine the transmission power.

4. In the power transmission stage, the receiving device detects the rectified voltage and current, and sends a communication packet to enable the transmitting device to increase or decrease the transmitting power. In addition, the receiving device will send the received power packet to the transmitting device periodically, if the transmitting device finds that the difference between the received power and the transmitted power is too large, in order to ensure the transmission safety, the transmitting device will stop the transmitting power and shut down the system. If the receiving device no longer needs power (the battery is fully charged), an end power transmission packet is sent, and the transmitting device finishes charging after receiving the end power transmission packet.

As shown in fig. 1-3, a first aspect of the embodiments of the present application provides a wireless charging transmitting device 100, the wireless charging transmitting device 100 is used for charging a receiving device 200, and the wireless charging transmitting device 100 includes a transmitting coil 110, a driving component, and a control module 130.

The transmitting coil 110 is used for generating a corresponding electromagnetic signal according to the load information of the receiving device. The shape of the transmitting coil 110 may be circular, rectangular, etc., and is not limited herein.

The driving component is connected to the transmitting coil 110 to move the transmitting coil 110. As shown in fig. 1-2, the drive assembly may be coupled to the cable via a motor to move the transmitting coil 110. As shown in fig. 3, the driving assembly may also drive the transmitting coil 110 to move through the cooperation of the motor, the gear and the rack. Of course, the driving assembly may also be a motor cooperating with the lead screw to drive the transmitting coil 110 to move. The moving direction of the transmitting coil 110 may be a unidirectional movement or a multidirectional movement. For example, in fig. 1, the transmitting coil 110 moves along a first direction AA or a second direction BB, and the first direction AA and the second direction BB are opposite, but it is understood that in some other implementations, the first direction AA can be configured to be perpendicular to the second direction BB, so that the transmitting coil 110 has a higher freedom of movement and achieves more precise alignment.

The control module 130 is electrically connected to the transmitting coil 110 and the driving component, and the control module 130 controls the driving component to drive the transmitting coil 110 to move according to the signal strength information transmitted by the receiving device 200, so that the transmitting coil 110 is initially aligned to the receiving coil 210 of the receiving device 200. The receiving device 200 may be a mobile phone, a mobile power supply, or the like.

As shown in fig. 4, the control module 130 includes a microprocessor 131 and a demodulator 132. The microprocessor 131 is connected to the driving component, and the microprocessor 131 is used for controlling the driving component to drive the transmitting coil 110 to move according to the signal strength information. The demodulator 132 is electrically connected to the microprocessor 131 and the transmitting coil 110. Since the receiving apparatus 200 can modulate the load information, and then the transmitting coil 110 matches the corresponding electromagnetic signal according to the load information, the demodulator 132 demodulates the electromagnetic signal of the transmitting coil 110 to obtain the signal strength information.

Specifically, the stronger the signal feedback in the signal strength information received by the control module 130, the higher the alignment (i.e., coupling) between the transmitting coil 110 and the receiving coil 210. Therefore, the driving component can be controlled to operate according to the signal strength information received by the control module 130, and the driving component drives the transmitting coil 110 to move. When the signal strength information received by the control module 130 is strong, the transmitting coil 110 can be stopped moving. Preferably, when the signal strength information received by the control module 130 is the strongest, the moving of the transmitting coil 110 is stopped. The reception coil 210 may be stopped after one movement, or may be stopped after a plurality of movements.

To sum up, in the wireless charging transmitting device 100 of the embodiment of the present application, the driving component is controlled to drive the transmitting coil 110 to move by detecting the signal strength information transmitted by the receiving device 200, so as to improve the coupling degree between the wireless charging transmitting device 100 and the receiving device, improve the charging efficiency, and reduce the requirement of the alignment precision between the receiving device and the wireless charging transmitting device 100. Secondly, in the charging process, the alignment condition of the receiving device and the transmitting device can be detected, so that the position of the transmitting coil 110 is automatically adjusted, and the charging efficiency is ensured.

Referring to fig. 4, in some embodiments, the wireless charging transmission apparatus further includes a driver 170, and the driver 170 is electrically connected to the transmission coil 110 for driving the transmission coil 110 to generate a corresponding electromagnetic signal. Generally speaking, the driver 170 can generate a pulse wave with a frequency of 100-200 KHZ, the alternating sawtooth pulse is input to the transmitting coil 110, under the action of the electric pulse, the transmitting coil 110 generates a corresponding electromagnetic signal (alternating magnetic field), the receiving coil 210 obtains magnetic energy and converts the magnetic energy into electric energy, and the electric energy is rectified and filtered to output relatively stable direct current to charge the battery, thereby realizing complete non-contact power transmission.

With continued reference to fig. 4, in some embodiments, the control module 130 further comprises a Q-value detection unit 133, the Q-value detection unit 133 is connected to the microprocessor 131, and the Q-value detection unit 133 is configured to detect the Q-value of the transmitting coil 110 and transmit the detected Q-value to the microprocessor 131. The Qi protocol also supports Q value detection, where Q value is a main parameter for measuring an inductance device, and refers to a ratio of inductance presented by the inductance device (e.g., the transmitting coil 110) to equivalent loss resistance when the inductance device operates under an ac voltage of a certain frequency, and the higher the Q value, the smaller the inductor loss. The Q of the transmitting coil 110 is affected by the external environment, for example, when the transmitting device is poorly aligned with the receiving device, the Q is decreased because the equivalent impedance of the transmitting coil 110 is increased.

Thus, the Q value of the transmitter coil 110 is detected by the Q value detection unit 133, and the degree of alignment between the transmitter coil 110 and the receiver coil can be determined. The microprocessor 131 can control the driving component to drive the transmitting coil 110 to move according to the Q value of the transmitting coil 110, so that the transmitting coil 110 is aligned with the receiving device 200 again. When the Q value received by the microprocessor 131 is larger, the movement of the transmitting coil 110 is stopped. Preferably, when the Q value received by the microprocessor 131 is maximum, the movement of the transmitting coil 110 is stopped. The reception coil 210 may be stopped after one movement, or may be stopped after a plurality of movements. Since the accuracy of the Q value detection is higher than that of the signal strength detection, the transmitting coil 110 can be roughly adjusted according to the signal strength detection result, and then the transmitting coil 110 can be accurately adjusted according to the Q value detection result.

With continued reference to fig. 4, in some embodiments, the wireless charging transmitting device 100 further includes a proximity switch 140, and the proximity switch 140 is connected to the microprocessor 131 in the control module 130 for detecting whether an object is approaching or abutting the wireless charging transmitting device 100. When the proximity switch 140 does not detect that an object approaches or abuts the wireless charging transmitting device 100, the wireless charging transmitting device 100 maintains a standby state; when the proximity switch 140 detects that an object approaches or abuts the wireless charging transmitting device 100, the wireless charging transmitting device 100 enters a commissioning phase to determine whether the detected object is a receiving device. The proximity switch 140 can be used in the detection phase of the Qi protocol, and compared to the detection mode in which the wireless charging and transmitting device 100 periodically transmits the alternating magnetic field for detection, the detection using the proximity switch 140 is more power-saving, and generally, the wireless charging and transmitting device 100 will be in standby for a long time, and the wireless charging and transmitting device 100 can maintain lower power consumption during standby to further save power.

Referring again to fig. 4, in some embodiments, the proximity switches 140 include infrared-type proximity switches 141 and capacitive proximity switches 142. It can be set that the wireless charging and transmitting device 100 can enter the commissioning phase only when the infrared proximity switch 141 and the capacitive proximity switch 142 simultaneously detect that an object approaches or abuts the wireless charging and transmitting device 100. Thereby reducing the likelihood of false detections.

As shown in fig. 1 and 2, in some embodiments, the driving assembly includes a first driving member 121, a first transmission cable 122, a second driving member 123 and a second transmission cable 124. The first driving member 121 has a first rotating shaft, two ends of the first transmission cable 122 are respectively connected to the first rotating shaft and the transmitting coil 110, and when the first rotating shaft rotates, the first transmission cable 122 can be wound around the first rotating shaft, so as to drive the transmitting coil 110 to move toward the first direction AA. The second driving member 123 has a second rotating shaft, two ends of the second transmission cable 124 are respectively connected to the second rotating shaft and the transmitting coil 110, when the second rotating shaft rotates, the second transmission cable 124 can be wound around the second rotating shaft, so as to drive the transmitting coil 110 to move toward the second direction BB, and the first direction AA is opposite to the second direction BB.

Generally, the shape of the mobile phone is approximately rectangular, the diameter of the receiving coil 210 is slightly smaller than the width of the mobile phone, and the receiving coil 210 is located at the center position in the width direction of the mobile phone, but the receiving coil 210 may be located at the top, middle or bottom of the mobile phone in the length direction of the mobile phone, and there is a difference according to different brands. Therefore, in the present embodiment, the transmitting coil 110 can be substantially aligned with the receiving coil 210 of the mobile phone even though it can only reciprocate on a straight line.

When the first driving member 121 drives the transmitting coil 110 to move toward the first direction AA, the second driving member 123 may stop working, and the second rotating shaft is driven by the first driving member 121 to rotate reversely, or the second driving member 123 may also rotate reversely actively, so as to reduce the load of the first driving member 121. Similarly, when the second driving element 123 drives the transmitting coil 110 to move toward the second direction BB, the first driving element 121 may stop working, and the first rotating shaft is driven by the second driving element 123 to rotate reversely, or the first driving element 121 may also rotate reversely actively, so as to reduce the load of the second driving element 123. In fig. 1 and 2, the first direction AA is a vertically upward direction, and the second direction BB is a vertically downward direction.

Compare in rack and pinion transmission, this embodiment adopts the cable transmission, and the cost is lower, has avoided the transmission friction of gear and rack simultaneously, can the noise reduction. And the transmission precision of the gear rack can be influenced by the tooth pitch, and the precision of the cable transmission can be higher than that of the gear rack transmission.

As shown in fig. 5 and 6, in some embodiments, the drive assembly further includes a first take-up reel 125 and a second take-up reel 126. First spool 125 sets up in first pivot, and first pivot is rotated and is rolled up first transmission cable 122 in first spool 125, and first spool 125 can prevent that first transmission cable 122 from droing from first pivot. The second winding roll 126 is disposed on the second rotating shaft, the second rotating shaft rotates to wind the second transmission cable 124 on the second winding roll 126, and the second winding roll can prevent the second transmission cable 124 from falling off from the second rotating shaft.

As shown in fig. 1 and fig. 2, in some embodiments, the wireless charging transmitting device 100 further includes a supporting plate 150, the supporting plate 150 is connected to the first transmission cable 122 and the second transmission cable 124, and the transmitting coil 110 is disposed on the supporting plate 150. The first driving element 121 and the second driving element 123 respectively drive the supporting plate 150 to move toward the first direction AA and the second direction BB, so as to drive the transmitting coil 110 on the supporting plate 150 to move. The support plate 150 can also support the start coil to prevent the transmission coil 110 from deforming during movement.

As shown in fig. 1 and fig. 2, in some embodiments, the wireless charging transmitting device 100 further includes a guide rail 160, the supporting plate 150 is slidably disposed on the guide rail 160, and the guide rail 160 is disposed along the first direction AA. The number of the slide rails is preferably two to improve mechanical strength and stability of the tray 150 when sliding.

There is preferably a certain resistance between the pallet 150 and the slide rail, so that when the first driving element 121 or the second driving element 123 stops driving, the pallet 150 can stop moving quickly, the inertial displacement of the pallet 150 is reduced, and the precision is improved.

As shown in fig. 7, a second aspect of the embodiment of the present application provides a wireless charging table 300, where the table 300 includes a table body and a wireless charging transmitting device 100. The desk body can be an office desk, a dining table, a desk and the like. The table body may include a table top 310 and supporting legs 320, wherein the table top 310 has a receiving space 310a. The support legs 320 are disposed at the bottom of the table top 310 and are used for supporting the table top 310. The wireless charging transmitting device 100 is disposed in the accommodating space 310a, and the wireless charging transmitting device 100 may be flush with the table top 310 or disposed inside the table top 310. When the wireless charging transmitting device 100 is flush with the table top 310, an icon for indicating a wireless charging area may be disposed on the surface of the wireless charging transmitting device 100. When the wireless charging transmitting device 100 is disposed inside the desktop plate 310, an icon for indicating a wireless charging area may be disposed on the surface of the desktop plate 310 corresponding to the wireless charging transmitting device 100.

When the mobile phone is approximately placed in the wireless charging area, the infrared proximity switch 141 and the capacitive proximity switch 142 detect that an object approaches simultaneously, then the transmitting coil 110 generates a communicating alternating magnetic field, the mobile phone sends information by regulating and controlling an electromagnetic signal of the transmitting coil 110 after sensing the alternating magnetic field, the demodulator 132 demodulates the electromagnetic signal of the transmitting coil 110 to obtain signal strength information, the microprocessor 131 controls the driving component to drive the transmitting coil 110 to move according to the signal strength information, then the signal strength information after the transmitting coil 110 moves is continuously detected until the transmitting coil 110 moves to a position with strong information strength, and the transmitting coil 110 is approximately aligned with a receiving coil of the mobile phone.

It can be understood that when the mobile phone is placed outside the wireless charging area, the infrared proximity switch 141 and the capacitive proximity switch 142 do not detect the approach of an object, and the wireless charging and transmitting device 100 maintains a standby state.

In order to further improve the alignment accuracy, the Q value of the transmitting coil 110 can be detected by the Q value detecting unit 133, the microprocessor 131 controls the driving component to drive the transmitting coil 110 to move according to the detected Q value, and then the Q value after the transmitting coil 110 moves is continuously detected until the transmitting coil is moved to a position with a larger Q value.

It should be noted that the wireless charging transmitting device 100 according to the embodiment of the present application can also be applied to automobiles, public benches, and other objects.

Since the transmitting coil 110 of the wireless charging transmitting device 100 of the embodiment of the present application can move and align with the receiving coil, even if the receiving device 200 has a small offset due to vibration or the like during charging, the transmitting coil 110 can automatically align, thereby improving charging efficiency.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present application, it is to be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and specific meanings of the above terms may be understood by those skilled in the art according to specific situations.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. A wireless charging transmitting device, for charging a receiving device, the wireless charging transmitting device comprising:

the transmitting coil is used for transmitting corresponding electromagnetic signals according to the load information modulated by the receiving device;

the driving component is connected with the transmitting coil so as to drive the transmitting coil to move;

the demodulator is electrically connected with the transmitting coil and used for demodulating the electromagnetic signal to acquire signal intensity information; and

and the microprocessor is electrically connected with the demodulator and the driving assembly and is used for controlling the driving assembly to drive the transmitting coil to move according to the signal intensity information so as to enable the transmitting coil to initially align to the receiving device.

2. The wireless charging transmitting device of claim 1, further comprising:

and the Q value detection unit is connected with the microprocessor and used for detecting the Q value of the transmitting coil, and the microprocessor is also used for controlling the driving component to drive the transmitting coil to move according to the Q value of the transmitting coil so as to enable the transmitting coil to align at the receiving device again.

3. The wireless charging transmitting device of claim 1, further comprising:

and the driver is electrically connected with the transmitting coil and is used for driving the transmitting coil to generate the corresponding electromagnetic signal.

4. The wireless charging transmitting device of claim 1, further comprising:

and the proximity switch is electrically connected with the microprocessor and used for detecting whether an object is close to or abutted against the wireless charging transmitting device.

5. The wireless charging transmission device of claim 4, wherein the proximity switch comprises an infrared proximity switch and a capacitive proximity switch.

6. The wireless charging transmitting device of any one of claims 1-5, wherein the driving assembly comprises:

a first driving member having a first rotating shaft;

one end of the first transmission cable is connected with the transmitting coil, the other end of the first transmission cable is wound on the first rotating shaft, and the first driving piece is used for driving the transmitting coil to move towards a first direction;

the second driving piece is provided with a second rotating shaft; and

and one end of the second transmission cable is connected with the transmitting coil, the other end of the second transmission cable is wound on the second rotating shaft, the second driving piece is used for driving the transmitting coil to move towards a second direction, and the first direction is opposite to the second direction.

7. The wireless charging transmitting device of claim 6, wherein the driving assembly further comprises:

the first winding disc is arranged on the first rotating shaft, and the first rotating shaft drives the first winding disc to rotate so as to wind the first transmission cable on the first winding disc; and

and the second winding roll is arranged on the second rotating shaft, and the second rotating shaft drives the second winding roll to rotate so as to wind the second transmission cable on the second winding roll.

8. The wireless charging transmitting device of claim 6, further comprising:

the supporting plate is connected with the first transmission cable and the second transmission cable, and the transmitting coil is arranged on the supporting plate.

9. The wireless charging transmitting device of claim 8, further comprising:

the supporting plate is arranged on the guide sliding rail in a sliding mode, and the guide sliding rail is arranged along the first direction.

10. A wireless charging table, comprising:

a table body having an accommodating space; and

the wireless charging transmitting device of any one of claims 1 to 9, disposed in the accommodating space.

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