WO2021143342A1

WO2021143342A1 - Wireless charger and wireless charging control method

Info

Publication number: WO2021143342A1
Application number: PCT/CN2020/129466
Authority: WO
Inventors: 姜红军; 张毅; 戴华奇
Original assignee: 深圳市一讯达科技有限公司
Priority date: 2020-01-17
Filing date: 2020-11-17
Publication date: 2021-07-22
Also published as: CN111130227A

Abstract

Provided are a wireless charger and a wireless charging control method, wherein same are used for solving the problem of the poor charging reliability of an existing wireless charger due to it being impossible to automatically adjust the position of a wireless charging transmitting end. The wireless charger comprises a shell (11) and a wireless charging magnetic conversion apparatus (12), and further comprises a detection module (13) for sending a feedback signal after detecting that there is a device to be charged on the shell (11); a control module (14) for sending a driving signal after the feedback signal is received and when it is detected that the device to be charged is not normally charged; and a transmission module (15) for adjusting the position of the wireless charging magnetic conversion apparatus (12) according to the received driving signal, until the driving signal stops or it is no longer possible to adjust the position of the wireless charging magnetic conversion apparatus (12). The position of a coil of the wireless charging magnetic conversion apparatus (12) can be automatically adjusted, thereby improving the reliability of wireless charging.

Description

Wireless charger and wireless charging control method

Technical field

The present invention relates to the technical field of wireless charging, in particular to a wireless charger and a wireless charging control method.

Background technique

At present, the effective charging area of the transmitting end of the wireless charger is limited, and the size of the mobile terminal (the device to be charged) and the position of the coil are also different. The traditional wireless charger is either dual-coil or multi-coil to provide larger For the effective charging area with a large area, it is necessary to manually adjust the placement position of the device to be charged, so that the transmitting coil of the wireless charger is aligned with the receiving coil of the device to be charged to achieve wireless charging. The above-mentioned operation mode is because the wireless charging magnetic conversion device is fixed, and the wireless charging magnetic conversion device cannot be automatically adjusted according to different devices to be charged to ensure the normal operation of the wireless charging. The operation is troublesome, the reliability is poor, and the user experience is not good.

Therefore, the traditional control method of manually controlling the wireless charger has the fact that the wireless charging magnetic conversion device is fixed and its effective charging area is limited, and it is impossible to automatically adjust the position of the wireless charging transmitter according to the different sizes and coil positions of the equipment to be charged. Wireless charging leads to the problem of poor interactivity.

Summary of the invention

In view of this, the present invention provides a wireless charger and a wireless charging control method to solve the problem that the existing wireless charger cannot automatically adjust the position of the wireless charging transmitter, which results in poor interactivity and reliability.

In the first aspect, an embodiment of the present invention provides a wireless charger, including a housing, a wireless charging magnetic conversion device, and further including:

The detection module is used to detect whether there is a device to be charged on the housing, and if it is detected that there is a device to be charged on the housing, send a feedback signal;

The control module is configured to detect the charging state of the device to be charged after receiving the feedback signal, and send a drive signal when it is detected that the device to be charged cannot be charged normally;

The transmission module is used to adjust the position of the wireless charging magnetic conversion device according to the received driving signal until the driving signal stops or the position of the wireless charging magnetic conversion device can no longer be adjusted.

With reference to the first aspect, in a first implementation manner of the first aspect, the detection module includes: an infrared sensor module, an electromagnetic sensor module, a light sensor module, a distance sensor module, an audio sensor module, an ultrasonic sensor module, and a radar sensor module , Gravity sensor module, communication module, touch sensor module, near field communication module, image sensor module, retina sensor module, fingerprint recognition module, AI module or physical switch module any one or more of them.

With reference to the first aspect, in a second implementation manner of the first aspect, the control module includes:

The detection unit is configured to detect the charging state of the device to be charged in real time after receiving the feedback signal;

The transmission control unit is used to send a drive signal to the transmission module when the detection unit detects that the device to be charged is in a non-charging state, and when the detection unit detects that the device to be charged is When the charging transition state changes to the charging state, immediately stop or delay for a predetermined period of time to stop sending the driving signal to the transmission module.

With reference to the first aspect, in a third implementation manner of the first aspect, the housing includes: at least one first support plate for carrying and fixing the wireless charging magnetic conversion device, the first support plate and The casing is connected in a sliding manner;

The transmission module includes: a first transmission module mechanically connected or meshingly connected with the first support plate; the first transmission module is used to adjust the wireless charging magnetic conversion device on a preset first preset path s position.

With reference to the third implementation manner of the first aspect, in the fourth implementation manner of the first aspect, the first transmission module includes: a first motor and a first transmission assembly;

The control end of the first motor is electrically connected to the drive signal output end of the control module, the output shaft of the first motor is mechanically connected to the first transmission assembly, and the first transmission assembly is also connected to the first transmission assembly. The support plate is mechanically connected or meshing connection; the first transmission assembly is used to convert the circular motion of the output shaft of the first motor into a linear or curved motion, so as to push the first support plate along the first preset path Do reciprocating movements.

With reference to the third implementation manner of the first aspect, in the fifth implementation manner of the first aspect, the housing further includes: a second support plate slidably connected or meshingly connected with the first support plate, and The second support plate is slidably connected or meshingly connected with the housing;

The transmission module further includes: a second transmission module mechanically connected or meshingly connected with the second support plate; the second transmission module is used to adjust the wireless charging magnetic conversion device in a preset second preset path On the location.

With reference to the fifth implementation manner of the first aspect, in the sixth implementation manner of the first aspect, the second transmission module includes: a second motor and a second transmission assembly;

The control end of the second motor is electrically connected to the drive signal output end of the control module, the output shaft of the second motor is mechanically connected to the second transmission assembly, and the second transmission assembly is also connected to the second transmission assembly. The support plate is mechanically connected or meshing connection; the second transmission assembly is used to convert the circular motion of the second motor output shaft into a linear or curved motion, so as to push the second support plate along the second preset path Do reciprocating movements.

With reference to the fifth implementation manner of the first aspect, in the seventh implementation manner of the first aspect, the first transmission module further includes: a method for placing the first support plate on the first preset path The reciprocating movement of is limited to the first limiting device and the second limiting device within the first preset range;

The second transmission module further includes: a third limiting device and a fourth limiting device for limiting the reciprocating motion of the second support plate on the second preset path within a second preset range .

With reference to the seventh implementation manner of the first aspect, in the eighth implementation manner of the first aspect, the control module is specifically configured to detect the charging state of the device to be charged after receiving the feedback signal, And when it is detected that the device to be charged cannot be charged normally, sending a driving signal to the first transmission module;

The first transmission module is configured to adjust the position of the wireless charging magnetic conversion device on the first preset path according to the received driving signal;

The control module is further configured to detect the charging state of the device to be charged in real time when the first transmission module adjusts the position of the wireless charging magnetic conversion device on the first preset path; When the device to be charged is in the charging state, stop sending the drive signal to the first transmission module; if the first transmission module adjusts the first position of the wireless charging magnetic conversion device on the first preset path After one reciprocating movement within the range, and the device to be charged has not been detected to be in a charging state, the control module stops sending the driving signal to the first transmission module, and sends a driving signal to the second transmission module instead , Controlling the second transmission module to move a predetermined distance along the second preset path;

The second transmission module is configured to adjust the wireless charging magnetic conversion device to move a predetermined distance or travel a predetermined time on the second preset path under the control of the control module;

The control module is further configured to detect the charging state of the device to be charged in real time when the second transmission module is controlled to adjust the wireless charging magnetic conversion device to move on the second preset path; When the device to be charged is in the charging state, stop sending the drive signal to the second transmission module; if the second transmission module adjusts the wireless charging magnetic conversion device to move on the second preset path After the distance, if the control module has not detected that the device to be charged is in the charging state, the control module stops sending the drive signal to the second transmission module, and sends the drive signal to the first transmission module instead. Drive signal.

With reference to the first aspect, in a ninth implementation manner of the first aspect, the entire or partial area of the housing close to the upper cover of the wireless charging magnetic conversion device is made of a transparent material or a translucent material; the transparent material includes Polycarbonate (PC), polyvinyl chloride (PVC), polystyrene (PS), acrylonitrile styrene copolymer (SAN), ethylene terephthalate (PET), organic glass (PMMA), transparent One of ABS, transparent silicone, acrylic, glass, TPE, polypropylene (PP); the translucent material includes translucent low-density polyethylene (LDPE) or is made of any of the above-mentioned transparent materials mixed with toner become.

With reference to the fifth implementation manner of the first aspect, in the tenth implementation manner of the first aspect, the control module includes an alarm device; the alarm device is used to control the first transmission module and the second transmission After the module reciprocates along the first preset path and the second preset path, if it is detected that the device to be charged still cannot be charged normally, it sends an abnormal working signal.

In a second aspect, the present invention provides a wireless charging control method, including:

Detect whether there is a device to be charged at a predetermined location;

If it is detected that there is a device to be charged at the predetermined location, detect and determine whether the device to be charged is normally charged;

If it is detected that the device to be charged cannot be charged normally, a drive signal is sent to the transmission module connected to the wireless charging magnetic conversion device to drive the transmission module to adjust the position of the wireless charging magnetic conversion device until the to be charged The device is normally charged or the position of the wireless charging magnetic conversion device can no longer be adjusted.

With reference to the second aspect, in a first implementation manner of the second aspect, the driving signal is sent to the transmission module connected to the wireless charging magnetic conversion device to drive the transmission module to adjust the position of the wireless charging magnetic conversion device , Until the device to be charged is normally charged or the position of the wireless charging magnetic conversion device can no longer be adjusted, including:

Controlling the wireless charging magnetic conversion device to move on a preset first preset path;

Detect and determine in real time whether the device to be charged is normally charged;

If the device to be charged is normally charged, stop moving the wireless charging magnetic conversion device, and end the process;

If the device to be charged is not normally charged, determining whether the wireless charging magnetic conversion device has moved back and forth once within the first predetermined range on the first preset path;

If the wireless charging magnetic conversion device has reciprocated once within the first predetermined range on the first preset path, the wireless charging magnetic conversion device is controlled to move on the preset second preset path. Distance, and return to the step of performing the real-time detection and judging whether the device to be charged is normally charged;

If the wireless charging magnetic conversion device has not reciprocated once within the first predetermined range on the preset first preset path, continue to control the wireless charging magnetic conversion device on the preset first preset path Move, and return to the step of performing the real-time detection and judging whether the device to be charged is normally charged.

In the wireless charger and charging control method provided by the embodiments of the present invention, the detection module detects whether the device to be charged is placed on the housing, the control module correspondingly controls the working state of the transmission module, and intelligently adjusts the wireless according to the charging state of the device to be charged. The position of the charging magnetic conversion device, so as to realize the function of intelligently controlling the wireless charging magnetic conversion device to actively search for the device to be charged, which not only can realize the wireless charging of the electric equipment, but also has high charging reliability, strong interaction, simple operation, and user stickiness. Sex.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

Figure 1 is a schematic structural diagram of a wireless charger provided by the present invention;

FIG. 2 is a schematic diagram of the structure of the control module 14;

FIG. 3 is an exploded view of a wireless charger provided by Embodiment 3 of the present invention;

FIG. 4 is a flowchart of a wireless charging control method provided by the present invention;

Fig. 5 is a flowchart of another wireless charging control method provided by the present invention.

Detailed ways

Hereinafter, a method for preparing a mixture and its corresponding equipment according to the embodiments of the present invention will be described in detail with reference to the drawings.

It should be clear that the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

Example one

Figure 1 is a schematic structural diagram of a wireless charger provided by the present invention. As shown in Figure 1, the wireless charger of this embodiment includes a housing 11, a wireless charging magnetic conversion device 12, a detection module 13, a control module 14, and a transmission module 15; Wherein, the wireless charging magnetic conversion device 12 includes at least a wireless charging transmitter, or, further, the wireless charging receiving terminal and the wireless charging transmitter can also be integrated in the wireless charging magnetic conversion device 12;

The casing 11 is used to carry the device to be charged. The structure of the casing 11 is designed according to specific conditions, and its function is not much different from that of the existing wireless charger, and will not be repeated here.

The detection module 13 is used to detect whether there is a device to be charged on the housing 11, and if it is detected that there is a device to be charged on the housing 11, it sends a feedback signal to the control module 14; in the present invention, the device to be charged may be the device that needs to be charged Electronic devices, such as mobile phones, tablet computers, smart watches, smart toys, mobile power supplies, hot water cups, electric kettles, earphones, drones, electric cars, electric scooters, balance cars, robots, mice, etc.

The control module 14 is configured to detect the charging state of the device to be charged after receiving the feedback signal, and send a driving signal to the transmission module 15 when it is detected that the device to be charged cannot be charged normally. Preferably, the housing 11 is provided with at least one wireless charging control unit that is electrically connected to the wireless charging magnetic conversion device 12 and used for wireless charging of the equipment to be charged. The control module can detect by connecting to the wireless charging control unit. The charging status of the device to be charged. Specifically, the control module 14 may be implemented by a microprocessor or a single-chip microcomputer. Preferably, as shown in FIG. 2, the control module 14 may include: a detection unit 141, which is used to detect the charging state of the device to be charged in real time after receiving the feedback signal; and the transmission control unit 142, which is used to detect When the unit 141 detects that the device to be charged is in a non-charging state, it sends a driving signal to the transmission module 15, and when the detection unit 141 detects that the device to be charged changes from a non-charging state to a charging state, it immediately stops or The transmission of the driving signal to the transmission module 15 is stopped after a first predetermined period of time is delayed, so that the transmission module 15 controls the wireless charging magnetic conversion device 12 to be located in an appropriate position.

The transmission module 15 is used to adjust the position of the wireless charging magnetic conversion device 12 according to the received driving signal until the driving signal stops or the position of the wireless charging magnetic conversion device 12 can no longer be adjusted. Preferably, the transmission module 15 can control the wireless charging magnetic conversion device 12 to move left and right or move up and down or rotate.

The wireless charger provided in this embodiment detects whether the device to be charged is placed on the housing through the detection module 13, and the control module 14 controls the working state of the transmission module 15 accordingly. According to the charging state of the device to be charged (ie, the device to be charged) The relative position of the wireless charging receiving end and the wireless charging magnetic conversion device 12) adjust the position of the wireless charging magnetic conversion device 12, so as to realize the function of intelligently controlling the wireless charging magnetic conversion device to actively search for the device to be charged, which can not only realize the matching The wireless charging of electric equipment has strong interactivity, simple operation and high user stickiness.

In an optional embodiment, the entire or partial area of the wireless charger housing provided by the present invention near the upper cover of the wireless charging magnetic conversion device is made of a transparent material or a translucent material; the transparent material includes polycarbonate ( PC), polyvinyl chloride (PVC), polystyrene (PS), acrylonitrile styrene copolymer (SAN), ethylene terephthalate (PET), organic glass (PMMA), transparent ABS, transparent silica gel , Acrylic, glass, TPE, polypropylene (PP); the translucent material includes translucent low-density polyethylene (LDPE) or is made of any one of the above-mentioned transparent materials mixed with toner.

In an optional embodiment, the above-mentioned wireless charger further includes: a wireless charging module, the wireless charging module shown is connected to the control module 14 for wirelessly charging the device to be charged placed on the housing 11, and wireless charging The magnetic conversion device 12 is a core component of the wireless charging module. Optionally, the wireless charging module is implemented by a wireless charging transmitter coil, which is connected to the control module 14 and sends an electromagnetic signal to the outside. When the device to be charged receives the electromagnetic signal, the charging starts.

In an optional embodiment, the above-mentioned wireless charger further includes: a power supply module. The power supply module shown is used to provide DC power or AC power for each functional module of the wireless charger, and specifically includes a detection module 13 for the wireless charger. , The control module 14, the transmission module 15, the wireless charging module and other power-consuming modules among them provide power. Optionally, the power module is implemented by a battery. In other optional embodiments, the power module is implemented by a charging socket, and the charging socket is connected to an external power cord to provide power to the wireless charger. Optionally, the power supply module can also be realized by using a power supply line or solar energy.

In an optional embodiment, the above-mentioned wireless charger further includes a flexible device, which is arranged in the casing 11 or fixed on the casing 11, and is used to support a support plate or a base of the device to be charged. On, it is used to prevent the device to be charged from sliding when placed on it. Preferably, the support plate or the base itself is composed of a soft material. In this embodiment, no additional soft devices are needed to prevent the device to be charged from sliding.

Example two

This embodiment provides a wireless charger. The structure is the same as that of the first embodiment. The difference is that the detection module 13 may specifically include: an infrared sensor module, an electromagnetic sensor module, a light sensor module, a distance sensor module, an audio sensor module, and an ultrasonic sensor module. , Radar sensor module, gravity sensor module, communication module, touch sensor module, near field communication module, image sensor module, retina sensor module, fingerprint recognition module, AI module or any one or more of the physical switch module.

Specifically, if the detection module 13 adopts an infrared sensor module, the infrared sensor module is used to output the feedback signal when it senses that the infrared rays emitted from the outside are blocked or when the charging device reflects the infrared rays emitted to the infrared sensor module.给控制module14.

If the detection module 13 adopts an electromagnetic induction module, the electromagnetic induction module is used to convert the position information of the charged device into an electromagnetic signal, for example: adopting the Q value detection method, the wireless transmitting circuit of the electromagnetic induction module sends out continuous changes to the work of the wireless receiving circuit Frequency of electromagnetic waves, in the process of transmitting electromagnetic waves by the wireless transmission circuit, the detection circuit of the electromagnetic induction module detects the Q value of the wireless transmission circuit, and determines whether there is a charge to be charged in the electromagnetic wave transmission range of the wireless transmission circuit according to the detected Q value equipment.

If the detection module 13 adopts a light sensor module, the light sensor module is used to output the feedback signal to the control module 14 when it senses that the light emitted outward is blocked or reflected.

If the detection module 13 adopts a distance sensing module, the distance sensing module is used to output the feedback signal when it is detected that the device to be charged is approaching and the distance between the pre-designated component and the device to be charged reaches a first preset value. Specifically, the first preset value can be set according to actual requirements, for example, set to 1 cm. When the distance sensing module detects that the device to be charged is close to the pre-designated component and the distance between the two reaches 1 cm, it outputs a feedback signal.

If the detection module 13 adopts an audio sensor module, the audio sensor module is used when the user inputs predetermined audio information, for example, the user says "start charging", the control command is recognized through voice recognition technology, and the feedback signal is output to the control module 14 .

If the detection module 13 adopts an ultrasonic sensor module, the ultrasonic sensor module is used to output ultrasonic waves to the outside, and through echo ranging, when the distance between the device to be charged and the pre-designated component is less than the second preset value, the output Feedback signal. Specifically, the second preset value can be set according to actual needs. For example, the second preset value is set to 1cm. When the ultrasonic sensing module detects that the device to be charged is close to the pre-designated component and the distance between the two reaches 1cm, Output feedback signal.

If the detection module 13 adopts a radar sensor module, the radar sensor module is used to emit microwaves of a specific frequency and receive the reflected microwaves to measure the distance between the charged device and the pre-designated component. When the distance is less than the third At the preset value, the radar sensor module outputs a feedback signal to the control module 14. Specifically, the third preset value can be set according to actual requirements, for example, set to 1cm. When the radar sensor module detects that the charged device is close to the pre-designated component and the distance between the two reaches 1cm, it outputs a feedback signal.

If the detection module 13 adopts a gravity sensor module, the gravity sensor module is used to output a feedback signal to the control module 14 when it senses that a heavy object is placed on a pre-designated component. If the weight is a device to be charged, the The wireless charger provided by the invention will start to charge it. If the heavy object is another non-wirelessly chargeable object, the other non-wirelessly chargeable object will not be charged because it does not have a wireless charging receiver.

If the detection module 13 adopts a communication module, the communication module is used to convert the received communication signal or instruction into a feedback signal and output it to the control module 14. Specifically, the communication signal or instruction can be given by the user through App, QR code, RFID, NFC or other means, such as turning on the wireless charging function or turning on the transmission module through the APP. Optionally, the communication module can also set the above The implementation time or closing time of the wireless charging behavior. For example, if the communication module receives the "10 minutes of charging" command sent by the user through the APP, the communication module generates a feedback signal including two information: charging start and charging duration of 10 minutes. The feedback information is sent to the control module 14. The control module 14 controls the transmission module 15 to adjust the position of the wireless charging magnetic conversion device according to the feedback signal, and starts timing when the device to be charged is detected to start charging, and the timing reaches 10 At the time of minutes, the power of the wireless charging magnetic conversion device 12 is cut off or the wireless charging magnetic conversion device 12 is rotated through the transmission module 15 to a position where the charging device cannot be charged.

If the detection module 13 adopts a touch sensing module, the touch sensing module is used to output a feedback signal according to the signal instruction when it detects that the user touches or presses the touch sensing area to input a signal instruction. Optionally, the output terminal of the touch sensing area is connected to the control module 14 and can be designed as a button or a touch point. Different buttons or different touch points correspond to different functions. For example, when the user presses the "forward" button, the transmission module 15 controls the wireless charging magnetic conversion device 12 to advance to the first preset path. If the "stop" button is pressed, the transmission module 15 controls the wireless charging magnetic conversion device 12 to stop moving And keep it in the current state. If the touch sensing area is designed to be composed of touch points, when the user touches touch points with different functions, the transmission module 15 performs any one of "move" or "stop motion" according to the different feedback signals output by the control module 14. Item actions. Optionally, the touch-sensitive area may also be implemented as an area for correspondingly outputting feedback signals by sensing the movement direction of the user's gesture.

If the detection module 13 adopts a retina sensor module, the retina sensor module is used to output a feedback signal according to the signal instruction after detecting the user's retina. For example, after the retina module pre-inputs the user's retina, the retina sensing module will immediately transmit a signal to the control module 14 to drive the transmission module after pairing the retina. If there is no pre-pairing, the operation is performed through a preset program and a signal is sent to the control module 14.

If the detection module 13 adopts a fingerprint identification module, the fingerprint identification module is used to output a corresponding signal to the control module 14 after matching the corresponding fingerprint.

If the detection module 13 adopts an AI module, the AI module outputs the corresponding signal to the control module 14 after receiving the corresponding instruction.

If the detection module 13 adopts a physical switch module, the physical switch executes corresponding instructions according to the settings of the physical buttons, and outputs corresponding signals to the control module 14.

If the detection module 13 adopts an image sensor module, the image sensor module performs image analysis on the placed object and outputs a corresponding signal to the control module 14.

The detection module 13 of the wireless charger provided in this embodiment can have multiple implementation modes, and can be specifically selected and configured according to specific charging scenarios, and the charging mode is flexible.

Example three

This embodiment provides a wireless charger whose structure is the same as that of Embodiment 1. The difference is that the wireless charger provided in this embodiment further includes: at least one first support plate disposed in the housing 11 of the wireless charger , Used to carry and fix the wireless charging magnetic conversion device 12; the first support plate is slidably connected to the housing 11; in this embodiment, the transmission module 15 includes: a first support plate that is mechanically connected or meshingly connected to the first support plate A transmission module, the first transmission module is used to adjust the position of the wireless charging magnetic conversion device on the first preset path.

Specifically, the transmission module 15 can be fixed on the first support plate, or can be fixed on the housing 11 and then meshed and connected with the first support plate, or the transmission module 15 can slide with the first support plate through a structure such as a gear or a belt. Connected to push the first support plate to move.

In an optional embodiment, the first transmission module includes: a first motor and a first transmission assembly; the control terminal of the first motor is electrically connected to the drive signal output terminal of the control module, and the first motor The output shaft is mechanically connected with the first transmission assembly, and the first transmission assembly is also mechanically connected or meshingly connected with the first support plate; the first transmission assembly is used to connect the output shaft of the first motor The circular motion is transformed into a linear or curved motion to push the first support plate to reciprocate along the first preset path. For example, the first transmission assembly may be implemented as a gear, rack, belt, spring, spring, worm gear, or worm, and other similar functional components that can drive the first support plate to move.

Preferably, the first transmission module may further include: a first limiting device and a first limiting device for limiting the reciprocating motion of the first supporting plate on the first preset path within a first preset range Two limit devices. For example, for the wireless charger shown in FIG. 3, a first limiting device 310 and a second limiting device 311 may be provided at both ends of the first rack 303 to move the first support plate to a preset threshold (No. When the two ends of a rack 303), the further movement of the first support plate is restricted. Specifically, the first preset range can be set according to actual needs. For example, the critical points of the preset range are set to the two ends of the first rack 303, that is, when the first motor 301 rotates forward to drive the first The support plate travels in the positive direction of the X axis (set one side of the length of the first rack as the positive direction of the X axis). When the first driving gear 302 reaches the end of the first rack 303, the first limiting device 310 The first motor 301 brakes. At this time, because the first motor 301 cannot continue to rotate, it will stay at the current position or move in the opposite direction according to the drive signal instruction of the control module 14; or when the first motor 301 rotates backward to drive the first support plate Traveling in the negative direction of the X axis, when the first driving gear 302 reaches the other end of the first rack 303, the second limiting device 311 brakes the first motor 301, and the first motor 301 cannot continue to rotate. The drive signal of the control module 14 instructs to stay at the current position or move in the opposite direction.

In another optional embodiment, in addition to the first support plate, the wireless charger provided by the present invention may also include a second support plate and a second transmission module, and the second support plate is mounted on the housing 11. Inside, it is slidably connected or meshingly connected with the housing 11, and the second support plate is slidably connected or meshingly connected with the first support plate. In this embodiment, in addition to the first transmission module, it also includes a second transmission module mechanically connected or meshingly connected with the second support plate; the second transmission module is used to adjust the wireless charging magnetic conversion device 12 in the preset The position on the second preset path. That is, the transmission module 15 can realize the position adjustment of the wireless charging magnetic conversion device 12 in the two-dimensional direction through the first transmission module and the second transmission module under the control of the control module 14. Preferably, if the first preset path and the second preset path are both straight lines, the angle formed by the first preset path and the second preset path is greater than 0° and less than or equal to 90°.

Preferably, the second transmission module includes: a second motor and a second transmission assembly; the control terminal of the second motor is electrically connected to the drive signal output terminal of the control module, and the output shaft of the second motor is connected to the drive signal output terminal of the control module. The second transmission component is mechanically connected, and the second transmission component is also mechanically connected or meshed with the second support plate; the second transmission component is used to convert the circular motion of the second motor output shaft into a straight line Or curved motion to push the second support plate to reciprocate along the second preset path. For example, the second transmission component in the second transmission module can also be implemented as gears, racks, belts, springs, clockwork, electromagnets, worm gears or worms and other similar functional components, and its implementation principle is similar to that of the first transmission module. I won't repeat it here.

FIG. 3 is an exploded view of a wireless charger provided by this embodiment. For ease of description, FIG. 3 only shows the parts related to this embodiment. Preferably, as shown in FIG. 3, the first transmission module It includes a first motor 301 and a first transmission assembly including a first driving gear 302 and a first rack 303; the second transmission module includes a second motor 304 and a second transmission including a second driving gear 305 and a second rack 306 Components. Among them, the first rack 303 is used to drive the first support plate 307 to move, so as to drive the wireless charging magnetic conversion device 12 to move. Specifically, the first rack 303 is mechanically connected to the first supporting plate 307, and the wireless charging magnetic conversion device 12 is mechanically connected to the first supporting plate 307. The first driving gear 302 meshes with the first rack 303 for driving the first rack 303 to move through its own rotation. The first motor 301 is electrically connected to the control module 14 and mechanically connected to the first driving gear 302. When the first motor 301 receives the drive signal sent by the control module 14, it performs forward or reverse rotation according to the drive signal. Specifically, since the first motor 301 is mechanically connected to the first driving gear 302, when the first motor 301 rotates forwards, reverses, or stops moving, the first driving gear 302 also rotates forwards, reverses, or stops moving accordingly. Similarly, the second rack 306 is used to drive the second support plate 308 to move, so as to drive the wireless charging magnetic conversion device to move. Specifically, the second rack 306 is mechanically connected to the second supporting plate 308, and the wireless charging magnetic conversion device is mechanically connected to the second supporting plate 308. The second driving gear 305 meshes with the second rack 306 for driving the second rack 306 to move through its own rotation. The second motor 304 is electrically connected to the control module 14 and mechanically connected to the second driving gear 305. When the second motor 304 receives the driving signal sent by the control module 14, it performs forward or reverse rotation according to the driving signal. Specifically, because the second motor 304 is mechanically connected to the second driving gear 305, when the second motor 304 rotates forward, reverses, or stops moving, the second drive gear 305 also rotates forward, reverse or stops moving accordingly.

Further optionally, similar to the first transmission module, the second transmission module may further include: a device configured to limit the reciprocating motion of the second support plate on the second preset path to a second preset range Inside the third limit device and the fourth limit device. For example, the functions of the third limiting device and the fourth limiting device shown in FIG. 3 are similar to those of the first limiting device and the second limiting device. The third limiting device 312 and the fourth limiting device 313 are not here. Go into details again. During specific implementation, the first, second, third, and fourth limit devices may be in specific forms of limit plates or limit switches, which will not be repeated here.

For the wireless charger with the function of two-dimensional adjustment of the position of the wireless charging magnetic conversion device provided in this embodiment, the specific working principle is: the detection module 13 detects whether there is a device to be charged on the housing 11, and if the housing is detected If there is a device to be charged on 11, it sends a feedback signal to the control module 14. The control module 14 is specifically used to detect the charging state of the device to be charged after receiving the feedback signal, and when the device to be charged is detected When the device cannot be charged normally, it sends a drive signal to the first transmission module; the first transmission module is configured to adjust the wireless charging magnetic conversion device to the first preset according to the received drive signal. The position of the path; the control module 14 is also used to detect the charging state of the device to be charged in real time when the first transmission module adjusts the position of the wireless charging magnetic conversion device on the first preset path; if When it is detected that the device to be charged is in the charging state, stop sending the drive signal to the first transmission module; if the first transmission module adjusts the wireless charging magnetic conversion device to be on the first preset path After reciprocating once in the first range (ie, after hitting the first and second limiting devices one time in succession), if the device to be charged has not been detected to be in the charging state, the control module 14 stops moving to the first A transmission module sends the driving signal, and then sends a driving signal to the second transmission module, and controls the second transmission module to move a predetermined distance along the second preset path through the driving signal; the second transmission module, It is used to adjust the wireless charging magnetic conversion device to move a predetermined distance on the second preset path under the control of the control module 14; the control module 14 is also used to control the second transmission module to adjust the wireless When the charging magnetic conversion device moves on the second preset path, it detects the charging state of the device to be charged in real time; if it detects that the device to be charged is in the charging state, it stops sending all data to the second transmission module. The driving signal; if the second transmission module adjusts the wireless charging magnetic conversion device to move a predetermined distance on the second preset path, the control module 14 has not detected that the device to be charged is in a charging state, then Stop sending the driving signal to the second transmission module, and send the driving signal to the first transmission module instead, so that the first transmission module starts to reciprocate on the first preset path again, and so on until it is to be charged The device can be charged normally or the wireless charging magnetic conversion device cannot be charged normally at all positions on the first preset path and the second preset path.

Preferably, the driving signal sent by the control module 14 to the transmission module 15 may be continuous or discontinuous. For example, the control module 14 may send a continuous driving signal of a second predetermined duration to the transmission module 15, for example, send a driving signal to the second transmission module for 1 minute continuously, and the second motor of the second transmission module will be in the first 1 minute. Inside, keep rotating so that the second transmission assembly drives the wireless charging magnetic conversion device to continuously move on the preset second preset path for 1 minute to achieve the purpose of moving the preset distance; or, the control module 14 transmits to the second The drive signal sent by the module is non-continuous, enabling the second transmission component to drive the wireless charging magnetic conversion device to move stepwise on a preset second preset path. For example, the second transmission component may also include a second preset path. Set multiple gear positions on the path, and set a limit switch for each gear position. After the control module 14 sends a drive signal to the second transmission assembly, the second transmission assembly adjusts the wireless charging magnetic conversion device to move a certain distance. The support of the conversion device stops moving when it touches the limit switch. At this time, if the actual movement distance of the wireless charging magnetic conversion device on the preset second preset path is less than the preset distance, the control module 14 will move to the second transmission assembly. Send the driving signal again to forcibly drive the second transmission assembly to drive the wireless charging magnetic conversion device to move forward until it hits the next limit switch, and then continue to determine whether the wireless charging magnetic conversion device is on the preset second preset path Whether the actual moving distance is less than the predetermined distance, if so, the driving signal is sent to the second transmission assembly again, as in the past.

In this embodiment, when the wireless charging is not working normally, the control module 14 will issue a command to the first transmission module, and the first support plate will move under the drive of the first transmission module. If the wireless charger is still not working properly during the movement, Work (that is, it is not matched with the equipment to be charged), the first support plate will touch the first and second limit devices once and stay in the original position when it touches the limit devices for the second time. At this time, the control module 14 will Output instructions to the second transmission module to start working. The second transmission module drives the second support plate to move a predetermined short distance along the second preset path and then pauses. The control module then controls the first transmission module to drive the first support plate to move until the wireless The charging works normally, the transmission module stops working and keeps the original position. It is worth noting that in this embodiment, the operating sequence of the control module 14 controlling the first transmission module and the second transmission module can also be interchanged, that is, the wireless charging magnetic conversion device 12 is controlled to run on the second preset path first. If a reciprocating movement on the second preset path fails to achieve normal charging, the wireless charging magnetic conversion device 12 is controlled to run a predetermined distance on the first preset path, and then its position on the first preset path is adjusted. , So repeatedly.

In an optional example, when the first preset path or the second preset path is a closed loop, the first and second limiting devices or the third and fourth limiting devices may also be combined into one .

In an optional embodiment, for the embodiment of the present invention in which the transmission module 15 includes the first transmission module and/or the second transmission module, the control module 14 may also include an alarm device; the alarm device is used for controlling After the first transmission module and the second transmission module move back and forth along the first preset path and the second preset path, if it is detected that the device to be charged still cannot be charged normally, an abnormal working signal is issued, For example, an alarm signal is issued. For example, the alarm device may be one or more of buzzer, audio, indicator light, vibration, communication signal, etc. If the transmission module 15 has only one transmission module, after the transmission module completes a reciprocating movement, the equipment to be charged may still not be charged normally due to placement reasons (such as being placed too close to the side). At this time, the alarm device starts to work to remind the user; When there are two transmission modules, after the two transmission modules have performed a reciprocating motion, if the wireless charger still does not work normally, the alarm device starts to work.

Example four

Corresponding to the wireless charger provided in the foregoing embodiment of the present invention, this embodiment also provides a wireless charging control method. As shown in FIG. 4, the method includes the following steps:

Step S301: Detect whether there is a device to be charged at the predetermined location, if it is detected that there is a device to be charged at the predetermined location, continue to perform step S302;

Step S302: Detect and determine whether the device to be charged is normally charged, if it is detected that the device to be charged cannot be charged normally, step S303 is executed; if the device to be charged is normally charged, the process ends;

Step S303: Send a driving signal to the transmission module connected to the wireless charging magnetic conversion device, so that the transmission module adjusts the position of the wireless charging magnetic conversion device until the driving signal stops or the wireless charging magnetic conversion device can no longer be adjusted. Change the position of the device until then.

The method shown in FIG. 4 can be used to implement the technical solution of the embodiment shown in FIG. 1, and its implementation principles and technical effects are similar, and will not be repeated here.

FIG. 5 is a flowchart of another wireless charging control method provided by this embodiment. As shown in FIG. 5, the method includes:

Step S401: Detect whether there is a device to be charged at a predetermined location, and if it is detected that there is a device to be charged at the predetermined location, continue to perform step S402.

Step S402: Detect and determine whether the device to be charged is normally charged; if the device to be charged is normally charged, the process ends; if the device to be charged cannot be charged normally, then execute step S403.

Step S403: Control the wireless charging magnetic conversion device to move on a preset first preset path.

Step S404: Detect and determine in real time whether the device to be charged is normally charged; if the device to be charged is normally charged, immediately stop or delay the predetermined time to stop moving the wireless charging magnetic conversion device, and end the process. If the device is not normally charged, step S405 is executed.

Step S405: Determine whether the wireless charging magnetic conversion device has reciprocated once within the first predetermined range on the first preset path, if yes, execute step S406, otherwise, return to execute S403 to control the wireless The charging magnetic conversion device continues to move on the first preset path.

Step S406: Control the wireless charging magnetic conversion device to move a predetermined distance on the second preset path, and return to perform step S402.

The method shown in FIG. 5 can be used to implement the technical solution described in the third embodiment, and its implementation principles and technical effects are similar, and will not be repeated here.

In this embodiment, based on the string vibration theory, we establish a new wireless charging model. The model design block can be simplified into four parts: excitation coil-transmitter coil-receiving coil-load coil. When the transmitted current achieves magnetic coupling and resonance, The object coupling effect is the strongest, so as to realize wireless energy transmission.

In this process, the transmitting damping resistance π ₁ and the receiving damping resistance π ₂ can be defined as:

Among them, R ₁ , L ₁ , and C ₁ are the equivalent resistance, equivalent inductance, and equivalent capacitance of the transmitting end, respectively. R ₂ ′, L ₂ ′, C ₂ ′ and the next stage R _x of the receiving end are the load resistance of the receiving end, f is the coil frequency of the receiving end, and θ is the characteristic parameter of the receiving coil.

Assuming that the currents of the transmitting coil and the receiving coil are I ₁ and I ₂ , respectively,

For the effect of the power supply on the resonant system, M represents the mutual inductance between the two coils, according to Kirchhoff's voltage law:

Among them R is the induction resistance, U _x is the induction voltage, by the formula

Among them, Q is the quality factor and f ₀ is the natural frequency of the coil, which can be obtained:

U _x ＝R(1+θμ)I ₁ -θfMI ₂

0=R(1+θμ)I ₂ -θfI ₁

According to the above formula:

Let the coupling coefficient

The voltage at the receiving end and its modulus value are as follows:

According to the above theoretical analysis, set the parameters in Table 1 below for testing

Table 1

According to the differential analysis of the equation of the model, it can be obtained that at μ=0,

When, U will take the maximum value. The data results tested under this mathematical background are shown in Table 2 below:

Table 2

According to the experimental results, in the dynamic scenario, the transmission power does not change much. During the transmission of the wireless charger provided by the present invention, in the over-coupling state, the voltage will split, and two resonance frequencies will be differentiated. Even at the expense of the critical coupling state, the dynamic motion voltage of the charging product has a resonant frequency, and the voltage is relatively high. As long as the appropriate circuit parameters are selected to meet the critical coupling state to achieve high-efficiency charging, it has better practical utility and strong robustness. Awesome.

In summary, the wireless charger and wireless charging control method provided by the embodiments of the present invention detect whether the device to be charged is placed in a designated position or sense whether the user inputs a signal instruction, and the control module controls the operation of the transmission module accordingly. Status, so as to realize the adjustment of the wireless charging magnetic conversion device of the wireless charger according to the charged equipment to achieve the purpose of automatically finding a position that can be wirelessly charged. The present invention can intelligently control the position of the wireless charging magnetic conversion device, which is simple and practical, and has strong interaction. Good user experience, high operating efficiency, and high user stickiness.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply one of these entities or operations. There is any such actual relationship or order between.

A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing relevant hardware through a computer program. The program can be stored in a computer readable storage medium, and the program can be stored in a computer readable storage medium. During execution, it may include the procedures of the above-mentioned method embodiments. Wherein, the storage medium can be a magnetic disk, an optical disc, a read-only memory (Read-Only Memory, ROM), or a random access memory (Random Access Memory, RAM), etc.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. All should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

A wireless charger, including a casing and a wireless charging magnetic conversion device, is characterized in that it further includes:

The detection module is used to detect whether there is a device to be charged on the housing, and if it is detected that there is a device to be charged on the housing, send a feedback signal;

The control module is configured to detect the charging state of the device to be charged after receiving the feedback signal, and send a drive signal when it is detected that the device to be charged cannot be charged normally;

The transmission module is used to adjust the position of the wireless charging magnetic conversion device according to the received driving signal until the driving signal stops or the position of the wireless charging magnetic conversion device can no longer be adjusted.
The wireless charger of claim 1, wherein the detection module comprises: an infrared sensor module, an electromagnetic sensor module, a light sensor module, a distance sensor module, an audio sensor module, an ultrasonic sensor module, a radar sensor module, and a gravity sensor module. Any one or more of sensor module, communication module, touch sensor module, near field communication module, image sensor module, retina sensor module, fingerprint recognition module, AI module or physical switch module.
The wireless charger of claim 1, wherein the control module comprises:

The detection unit is configured to detect the charging state of the device to be charged in real time after receiving the feedback signal;

The transmission control unit is used to send a drive signal to the transmission module when the detection unit detects that the device to be charged is in a non-charging state, and when the detection unit detects that the device to be charged is When the charging transition state changes to the charging state, immediately stop or delay for a predetermined period of time to stop sending the driving signal to the transmission module.
The wireless charger according to claim 1, wherein the housing includes: at least one first support plate for supporting and fixing the wireless charging magnetic conversion device, the first support plate and the Shell sliding connection;

The transmission module includes: a first transmission module mechanically connected or meshingly connected with the first support plate; the first transmission module is used to adjust the wireless charging magnetic conversion device on a preset first preset path s position.
The wireless charger of claim 4, wherein the first transmission module comprises: a first motor and a first transmission component;

The control end of the first motor is electrically connected to the drive signal output end of the control module, the output shaft of the first motor is mechanically connected to the first transmission assembly, and the first transmission assembly is also connected to the first transmission assembly. The support plate is mechanically connected or meshing connection; the first transmission assembly is used to convert the circular motion of the output shaft of the first motor into a linear or curved motion, so as to push the first support plate along the first preset path Do reciprocating movements.
The wireless charger of claim 4, wherein the housing further comprises: a second support plate slidably connected or meshingly connected with the first support plate, the second support plate and the housing Body sliding connection or meshing connection;

The transmission module further includes: a second transmission module mechanically connected or meshingly connected with the second support plate; the second transmission module is used to adjust the wireless charging magnetic conversion device in a preset second preset path On the location.
8. The wireless charger of claim 6, wherein the second transmission module comprises: a second motor and a second transmission component;

The control end of the second motor is electrically connected to the drive signal output end of the control module, the output shaft of the second motor is mechanically connected to the second transmission assembly, and the second transmission assembly is also connected to the second transmission assembly. The support plate is mechanically connected or meshing connection; the second transmission assembly is used to convert the circular motion of the second motor output shaft into a linear or curved motion, so as to push the second support plate along the second preset path Do reciprocating movements.
The wireless charger of claim 6, wherein the first transmission module further comprises: a device configured to limit the reciprocating movement of the first support plate on the first preset path to a first preset path. Set the first limit device and the second limit device within the range;

The second transmission module further includes: a third limiting device and a fourth limiting device for limiting the reciprocating motion of the second support plate on the second preset path within a second preset range .
The wireless charger according to claim 8, wherein the control module is specifically configured to detect the charging state of the device to be charged after receiving the feedback signal, and to detect the charging state of the device to be charged after detecting the When the device cannot be charged normally, sending a drive signal to the first transmission module;

The first transmission module is configured to adjust the position of the wireless charging magnetic conversion device on the first preset path according to the received driving signal;

The control module is further configured to detect the charging state of the device to be charged in real time when the first transmission module adjusts the position of the wireless charging magnetic conversion device on the first preset path; When the device to be charged is in the charging state, stop sending the drive signal to the first transmission module; if the first transmission module adjusts the first position of the wireless charging magnetic conversion device on the first preset path After a reciprocating movement within the range, the control module stops sending the driving signal to the first transmission module and sends a driving signal to the second transmission module instead of detecting that the device to be charged is in a charging state , Controlling the second transmission module to move a predetermined distance along the second preset path;

The second transmission module is configured to adjust the wireless charging magnetic conversion device to move a predetermined distance on the second preset path under the control of the control module;

The control module is further configured to detect the charging state of the device to be charged in real time when the second transmission module is controlled to adjust the wireless charging magnetic conversion device to move on the second preset path; When the device to be charged is in the charging state, stop sending the drive signal to the second transmission module; if the second transmission module adjusts the wireless charging magnetic conversion device to move on the second preset path After the distance, if the control module has not detected that the device to be charged is in the charging state, the control module stops sending the drive signal to the second transmission module, and sends the drive signal to the first transmission module instead. Drive signal.
The wireless charger of claim 1, wherein the entire or partial area of the housing close to the upper cover of the wireless charging magnetic conversion device is made of a transparent material or a translucent material; the transparent material comprises polycarbonate Ester (PC), polyvinyl chloride (PVC), polystyrene (PS), acrylonitrile styrene copolymer (SAN), ethylene terephthalate (PET), organic glass (PMMA), transparent ABS, One of transparent silica gel, acrylic, glass, TPE, and polypropylene (PP); the translucent material includes translucent low-density polyethylene (LDPE) or is made of any one of the above-mentioned transparent materials mixed with toner.
The wireless charger of claim 6, wherein the control module comprises an alarm device; the alarm device is used to control the first transmission module and the second transmission module along the first preset After the path and the second preset path reciprocate back and forth, if it is detected that the device to be charged still cannot be charged normally, an abnormal working signal is issued.
A wireless charging control method, characterized by comprising:

Detect whether there is a device to be charged at a predetermined location;

If it is detected that there is a device to be charged at the predetermined location, detect and determine whether the device to be charged is normally charged;

If it is detected that the device to be charged cannot be charged normally, a drive signal is sent to the transmission module connected to the wireless charging magnetic conversion device to drive the transmission module to adjust the position of the wireless charging magnetic conversion device until the to be charged The device is normally charged or the position of the wireless charging magnetic conversion device can no longer be adjusted.
The wireless charging control method of claim 12, wherein the sending a driving signal to a transmission module connected to the wireless charging magnetic conversion device to drive the transmission module to adjust the position of the wireless charging magnetic conversion device, Until the device to be charged is normally charged or the position of the wireless charging magnetic conversion device can no longer be adjusted, including:

Controlling the wireless charging magnetic conversion device to move on a preset first preset path;

Detect and determine in real time whether the device to be charged is normally charged;

If the device to be charged is normally charged, stop immediately or delay the predetermined time to stop moving the wireless charging magnetic conversion device, and end the process;

If the device to be charged is not normally charged, determining whether the wireless charging magnetic conversion device has moved back and forth once within the first predetermined range on the first preset path;

If the wireless charging magnetic conversion device has reciprocated once within the first predetermined range on the first preset path, the wireless charging magnetic conversion device is controlled to move on the preset second preset path. Distance, and return to the step of performing the real-time detection and judging whether the device to be charged is normally charged;

If the wireless charging magnetic conversion device has not reciprocated once within the first predetermined range on the preset first preset path, continue to control the wireless charging magnetic conversion device on the preset first preset path Move, and return to the step of performing the real-time detection and judging whether the device to be charged is normally charged.