WO2021143342A1 - Chargeur sans fil et procédé de commande de charge sans fil - Google Patents

Chargeur sans fil et procédé de commande de charge sans fil Download PDF

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Publication number
WO2021143342A1
WO2021143342A1 PCT/CN2020/129466 CN2020129466W WO2021143342A1 WO 2021143342 A1 WO2021143342 A1 WO 2021143342A1 CN 2020129466 W CN2020129466 W CN 2020129466W WO 2021143342 A1 WO2021143342 A1 WO 2021143342A1
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WO
WIPO (PCT)
Prior art keywords
charged
module
wireless charging
transmission module
magnetic conversion
Prior art date
Application number
PCT/CN2020/129466
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English (en)
Chinese (zh)
Inventor
姜红军
张毅
戴华奇
Original Assignee
深圳市一讯达科技有限公司
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Publication of WO2021143342A1 publication Critical patent/WO2021143342A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa

Definitions

  • the present invention relates to the technical field of wireless charging, in particular to a wireless charger and a wireless charging control method.
  • 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
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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 .
  • 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.
  • 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.
  • 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.
  • the present invention provides a wireless charging control method, including:
  • 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 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:
  • the wireless charging magnetic conversion device 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;
  • 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.
  • 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.
  • 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.
  • FIG. 1 is a schematic structural diagram of a wireless charger provided by the present invention.
  • 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;
  • 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.
  • 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.
  • 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 control module 14 may be implemented by a microprocessor or a single-chip microcomputer. Preferably, as shown in FIG.
  • 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
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the power module is implemented by a battery.
  • 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.
  • the power supply module can also be realized by using a power supply line or solar energy.
  • 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.
  • 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.
  • This embodiment provides a wireless charger.
  • the structure is the same as that of the first embodiment.
  • 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.
  • 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. ⁇ module14.
  • 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.
  • 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.
  • 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.
  • the first preset value can be set according to actual requirements, for example, set to 1 cm.
  • 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 .
  • 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.
  • the second preset value can be set according to actual needs. For example, the second preset value is set to 1cm.
  • 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.
  • the radar sensor module outputs a feedback signal to the control module 14.
  • the third preset value can be set according to actual requirements, for example, set to 1cm.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the fingerprint identification module is used to output a corresponding signal to the control module 14 after matching the corresponding fingerprint.
  • 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.
  • 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.
  • 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.
  • This embodiment provides a wireless charger whose structure is the same as that of Embodiment 1.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the first preset range can be set according to actual needs.
  • 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).
  • the first driving gear 302 reaches the end of the first rack 303, the first limiting device 310 The first motor 301 brakes.
  • 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.
  • 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.
  • the first transmission module 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.
  • 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.
  • the angle formed by the first preset path and the second preset path is greater than 0° and less than or equal to 90°.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the first motor 301 is mechanically connected to the first driving gear 302
  • the first driving gear 302 also rotates forwards, reverses, or stops moving accordingly.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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 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
  • 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.
  • the driving signal sent by the control module 14 to the transmission module 15 may be continuous or discontinuous.
  • 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.
  • 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.
  • 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.
  • the control module 14 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.
  • 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.
  • the first and second limiting devices or the third and fourth limiting devices may also be combined into one .
  • 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.
  • 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.
  • 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.
  • the model design block can be simplified into four parts: excitation coil-transmitter coil-receiving coil-load coil.
  • 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.
  • the transmitting damping resistance ⁇ 1 and the receiving damping resistance ⁇ 2 can be defined as:
  • 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 ⁇ is the characteristic parameter of the receiving coil.
  • M represents the mutual inductance between the two coils, according to Kirchhoff's voltage law:
  • R is the induction resistance
  • U x is the induction voltage
  • Q is the quality factor
  • f 0 is the natural frequency of the coil, which can be obtained:
  • the transmission power does not change much.
  • the voltage will split, and two resonance frequencies will be differentiated.
  • the dynamic motion voltage of the charging product has a resonant frequency, and the voltage is relatively high.
  • the wireless charger and wireless charging control method 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.
  • 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.
  • 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.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

L'invention concerne un chargeur sans fil et un procédé de commande de charge sans fil, permettant de résoudre le problème de mauvaise fiabilité de charge d'un chargeur sans fil existant en raison de l'impossibilité d'ajuster automatiquement la position d'une extrémité de transmission de charge sans fil. Le chargeur sans fil comprend une coque (11) et un appareil de conversion magnétique de charge sans fil (12), et comporte en outre un module de détection (13) destiné à envoyer un signal de rétroaction après détection de la présence d'un dispositif à charger sur la coque (11) ; un module de commande (14) permettant d'envoyer un signal de commande après réception du signal de rétroaction et en cas de détection d'une charge anormale du dispositif à charger ; et un module de transmission (15) servant à ajuster la position de l'appareil de conversion magnétique de charge sans fil (12) en fonction du signal de commande reçu, jusqu'à ce que le signal de commande s'arrête ou qu'il ne soit plus possible d'ajuster la position de l'appareil de conversion magnétique de charge sans fil (12). La position d'une bobine de l'appareil de conversion magnétique de charge sans fil (12) peut être automatiquement ajustée, ce qui permet d'améliorer la fiabilité de charge sans fil.
PCT/CN2020/129466 2020-01-17 2020-11-17 Chargeur sans fil et procédé de commande de charge sans fil WO2021143342A1 (fr)

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CN211377705U (zh) * 2020-01-17 2020-08-28 深圳市一讯达科技有限公司 一种无线充电板及其控制装置
CN111082499A (zh) * 2020-01-17 2020-04-28 深圳市一讯达科技有限公司 一种无线充电装置及无线充电控制方法
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