CN114756142A - Handwriting pen, wireless charging method and terminal equipment - Google Patents

Handwriting pen, wireless charging method and terminal equipment Download PDF

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Publication number
CN114756142A
CN114756142A CN202210379334.9A CN202210379334A CN114756142A CN 114756142 A CN114756142 A CN 114756142A CN 202210379334 A CN202210379334 A CN 202210379334A CN 114756142 A CN114756142 A CN 114756142A
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China
Prior art keywords
value
wireless
coil
rotating
rotate
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Granted
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CN202210379334.9A
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Chinese (zh)
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CN114756142B (en
Inventor
武渊
马雷
王朝
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Honor Device Co Ltd
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Honor Device Co Ltd
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Priority to CN202210379334.9A priority Critical patent/CN114756142B/en
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G06F3/03545—Pens or stylus
    • 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
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
    • H02J7/00036—Charger exchanging data with battery
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Position Input By Displaying (AREA)

Abstract

The application provides a handwriting pen, a wireless charging method and terminal equipment, and relates to the technical field of terminals. The stylus pen includes: the wireless receiving coil, the rotating mechanism and the controller; the rotating mechanism is used for driving the wireless receiving coil to rotate; the controller is used for receiving electrical parameters which are sent by the terminal equipment and represent the wireless charging efficiency, the terminal equipment is provided with a wireless transmitting coil, and the wireless transmitting coil is used for transmitting electromagnetic energy to the wireless receiving coil; and the controller is used for controlling the rotation of the rotating mechanism according to the electrical parameters, and driving the wireless receiving coil to rotate when the rotating mechanism rotates, so that the wireless receiving coil is close to the wireless transmitting coil. The wireless receiving coil automatically rotates, the wireless receiving coil is closest to a wireless transmitting coil of the terminal device, and wireless charging efficiency is improved. The technical scheme reduces the requirement for placing the stylus pen, and the wireless transmitting coil and the wireless receiving coil are closest under the control of the internal rotating mechanism and the controller.

Description

Handwriting pen, wireless charging method and terminal equipment
Technical Field
The application relates to the technical field of terminals, in particular to a handwriting pen, a wireless charging method and terminal equipment.
Background
At present, in order to increase the operation convenience of terminal devices such as a tablet personal computer or a mobile phone, a stylus pen is configured, and for the sake of beauty, wireless charging is adopted in the mainstream charging mode of the current stylus pen, that is, the terminal device is used for wirelessly charging the stylus pen. The terminal equipment is provided with a transmitting coil TX, and the stylus pen is provided with a receiving coil RX.
However, since the volume of the stylus pen is small and limited by the limitation of the diameter of the stylus pen, most of the transmitting coil and the receiving coil of the wireless charging of the stylus pen currently adopt magnetic rod type wireless charging, and compared with the coupling mode of a planar coil of the wireless charging of a mobile phone, the wireless charging of the stylus pen can realize larger charging power on a smaller size.
In practical applications, in order to improve the charging efficiency, the distance between the transmitting coil and the receiving coil needs to be close enough to improve the coupling coefficient between the transmitting coil and the receiving coil. If the distance between the transmitting coil and the receiving coil is long, the charging efficiency is drastically reduced, and a predetermined charging power target cannot be achieved, or even charging cannot be performed. However, when a user generally places a stylus pen, the distance between the transmitting coil and the receiving coil may not be the shortest, and in order to solve this problem, a magnetic attraction manner is adopted to ensure that the distance between the transmitting coil and the receiving coil is the shortest, but a magnet must be arranged in the stylus pen.
Because the magnet occupies the length of the stylus, the magnet is not suitable for occasions requiring a relatively short stylus size.
Disclosure of Invention
In order to solve the above problems, the present application provides a stylus pen, a wireless charging method, and a terminal device, which can ensure a high wireless charging efficiency even without a magnet.
In a first aspect, the present application provides a stylus comprising: the device comprises a wireless receiving coil, a rotating mechanism and a controller;
the rotating mechanism is used for driving the wireless receiving coil to rotate;
the controller is used for receiving electrical parameters which are sent by the terminal equipment and represent the wireless charging efficiency, the terminal equipment is provided with a wireless transmitting coil, and the wireless transmitting coil is used for transmitting electromagnetic energy to the wireless receiving coil;
and the controller is used for controlling the rotation of the rotating mechanism according to the electrical parameters, and the rotating mechanism drives the wireless receiving coil to rotate when rotating so that the wireless receiving coil is close to the wireless transmitting coil.
One possible implementation, the rotation mechanism includes: the motor, the coil rotating bin and the rotating shaft;
a wireless receiving coil is arranged in the coil rotating bin; the wireless receiving coil and the coil rotating bin are relatively static;
two ends of the rotating shaft are respectively connected with the motor and the coil rotating bin;
and the motor is used for rotating according to a control instruction sent by the controller to drive the rotating shaft to rotate, and the rotating shaft drives the coil rotating bin to rotate.
In one possible implementation mode, the side surface of the coil rotating bin, which is close to the rotating shaft, is provided with a rotating sheet;
the outer surface of the rotating sheet is connected with the rotating shaft, and the inner surface of the rotating sheet is provided with a limiting mechanism which is used for fixing the wireless receiving coil.
One possible implementation further includes: a receiving end charging chip;
and the receiving end charging chip is used for rectifying the alternating current received by the wireless receiving coil and then charging the battery in the stylus pen.
In one possible implementation, the electrical parameter is a Q value of a wireless transmitting coil of the terminal device;
and the controller is specifically used for controlling the rotating mechanism to rotate according to the Q value until the Q value reaches the maximum value, and controlling the rotating mechanism to rotate to the position with the maximum Q value.
In one possible implementation, the wireless receiving coil is disposed in the coil rotating chamber with an offset to the axis.
One possible implementation manner is that the controller is specifically configured to query a Q value of a wireless transmitting coil of the terminal device, determine whether the query number is greater than a preset number N, if so, search for a maximum Q value of the N times, obtain a rotation angle corresponding to the maximum Q value, and control the rotation mechanism to rotate to the rotation angle; if not, the Q value of the wireless transmitting coil of the terminal equipment is continuously inquired, and the controller controls the rotating mechanism to rotate according to the Q value.
The controller is specifically used for inquiring the Q value of a wireless transmitting coil of the terminal equipment, judging whether the wireless receiving coil rotates for one circle or not, if so, searching the maximum value of the Q value, obtaining a rotating angle corresponding to the maximum value of the Q value, and controlling the rotating mechanism to rotate to the rotating angle; if not, the Q value of the wireless transmitting coil of the terminal equipment is continuously inquired, and the controller controls the rotating mechanism to rotate according to the Q value.
The application provides a wireless charging method of a handwriting pen, and the handwriting pen comprises: a wireless receiving coil and a rotating mechanism; the rotating mechanism is used for driving the wireless receiving coil to rotate;
the method comprises the steps that electrical parameters which are sent by terminal equipment and represent the wireless charging efficiency are received, the terminal equipment is provided with a wireless transmitting coil, and the wireless transmitting coil is used for transmitting electromagnetic energy to a wireless receiving coil;
the rotation of the rotating mechanism is controlled according to the electrical parameters, and the rotating mechanism drives the wireless receiving coil to rotate when rotating, so that the wireless receiving coil is close to the wireless transmitting coil.
In one possible implementation, the electrical parameter is a Q value of a wireless transmitting coil of the terminal device;
according to the rotation of electrical parameter control slewing mechanism, specifically include:
and controlling the rotating mechanism to rotate according to the Q value until the Q value reaches the maximum value, and controlling the rotating mechanism to rotate to the position with the maximum Q value.
One possible implementation manner is that the rotation mechanism is controlled to rotate according to the Q value until the Q value reaches the maximum, and the rotation mechanism is controlled to rotate to the position where the Q value is the maximum, and specifically includes:
inquiring the Q value of a wireless transmitting coil of the terminal equipment, judging whether the inquiry times are larger than a preset time N, if so, searching the maximum value of the Q values of the N times, obtaining a rotating angle corresponding to the maximum value of the Q values, and controlling a rotating mechanism to rotate to the rotating angle; if not, the Q value of the wireless transmitting coil of the terminal equipment is continuously inquired, and the controller controls the rotating mechanism to rotate according to the Q value.
One possible implementation manner is that the rotation mechanism is controlled to rotate according to the Q value until the Q value reaches the maximum, and the rotation mechanism is controlled to rotate to the position where the Q value is the maximum, and specifically includes:
inquiring the Q value of a wireless transmitting coil of the terminal equipment, judging whether the wireless receiving coil rotates for one circle, if so, searching the maximum value of the Q value, obtaining a rotation angle corresponding to the maximum value of the Q value, and controlling a rotation mechanism to rotate to the rotation angle; if not, the Q value of the wireless transmitting coil of the terminal equipment is continuously inquired, and the controller controls the rotating mechanism to rotate according to the Q value.
The present application further provides a terminal device, including: the wireless transmitter comprises a storage box, a wireless transmitting coil and a controller;
the storage box is used for storing the handwriting pen; the first end of the storage box is used for accommodating a pen point of the handwriting pen, and the second end of the storage box is used for accommodating a pen tail of the handwriting pen;
and the controller is used for controlling the wireless transmitting coil to wirelessly charge the handwriting pen.
The technical scheme provided by the application has the following advantages at least:
the utility model provides a stylus, at the inside slewing mechanism that sets up of stylus, this slewing mechanism can be controlled by the controller of stylus, the controller is according to the electric parameter of the wireless charging efficiency size of the sign of receiving from terminal equipment, control slewing mechanism's rotation, because slewing mechanism rotates, can drive wireless receiving coil and rotate, consequently, can rotate wireless receiving coil to the position that is close to wireless transmitting coil, concrete position can be confirmed according to the size of electric parameter, rotate the great position of wireless charging efficiency promptly. After the handwriting pen is placed well, rotation can be automatically achieved, and the distance between the wireless receiving coil in the handwriting pen and the wireless transmitting coil of the terminal device is enabled to be the nearest, so that the wireless charging efficiency is improved. The technical scheme reduces the requirement for placing the stylus pen, and can realize the closest distance between the wireless transmitting coil and the wireless receiving coil under the control of the internal rotating mechanism and the controller even if the wireless transmitting coil and the wireless receiving coil are not in the closest distance at the placing position.
Drawings
FIG. 1 is a schematic diagram of a terminal device equipped with a stylus;
fig. 2 is a schematic diagram of wireless charging corresponding to fig. 1;
FIG. 3 is a schematic diagram of a wireless charging coil and wireless receiving coil alignment;
FIG. 4 is a schematic view of another alternative wireless charging coil and wireless receiving coil misaligned;
FIG. 5 is a schematic view of yet another embodiment in which the wireless charging coil and wireless receiving coil are not aligned;
FIG. 6 is a schematic assembly diagram of a terminal device and a stylus pen according to an embodiment of the present disclosure;
FIG. 7 is a diagram illustrating an architecture of a stylus according to an embodiment of the present disclosure;
fig. 8 is a schematic diagram of a wireless charging system according to an embodiment of the present disclosure;
FIG. 9 is a schematic diagram of an interior of a stylus according to an embodiment of the present application;
fig. 10 is a flowchart of a wireless charging method for a stylus pen according to an embodiment of the present disclosure;
fig. 11 is a schematic diagram of a terminal device according to an embodiment of the present application.
Detailed Description
In order to make the technical solutions of the present application more clearly understood by those skilled in the art, an application scenario of the technical solutions of the present application is first described below.
Referring to fig. 1, a schematic diagram of a terminal device equipped with a stylus pen is shown.
For convenience of use, many tablet computers 200 are currently equipped with a keyboard K, and the tablet computer 200 is also equipped with a stylus 100.
In the present application, the stylus pen 100 is disposed at the top end of the tablet pc 200, that is, the top-suction type is taken as an example for introduction, and the tablet pc 200 can wirelessly charge the stylus pen 100. However, since the stylus pen 100 needs to be stably placed on the top of the tablet pc 200, a magnet needs to be provided in the stylus pen 100. This results in a longer length of stylus 100, which is an obstacle to downsizing.
The host 100 and the keyboard 200 in fig. 1 are only schematic, and specific product forms may be different.
Referring to fig. 2, the figure is a schematic diagram of wireless charging corresponding to fig. 1.
When the tablet computer 200 charges the stylus pen 100, since the wireless receiving coil RX is disposed in the stylus pen 100 and the wireless transmitting coil TX is disposed in the tablet computer 200, the wireless transmitting coil TX may transmit electromagnetic energy to the wireless receiving coil RX. However, the closer the distance between the wireless transmitting coil TX and the wireless receiving coil RX is, the better the wireless charging effect is, and the higher the wireless charging efficiency is.
In engineering terms, the wireless transmitting coil TX and the wireless receiving coil RX are as close as possible. The wireless receiving coil RX in the stylus pen 100 is usually designed to be eccentric, and during charging, the eccentric side needs to be attached to the tablet pc 200.
Referring to fig. 3, a schematic diagram of a wireless charging coil and wireless receiving coil alignment is shown.
In the cross-sectional view shown in fig. 3, the wireless transmitter coil TX is aligned with and positioned closest to the wireless receiver coil RX.
When the wireless charging is performed, the manner needs to be kept, the stylus pen cannot rotate, if the stylus pen rotates, the electromagnetic coupling fields of the two coils are converted, the distance between the center of the RX and the center of the TX increases, the coupling coefficient is deteriorated, the wireless charging efficiency is greatly reduced, and even the wireless charging cannot be performed.
Fig. 4 and 5 are schematic diagrams of the wireless receiving coil RX rotated by 90 degrees and 180 degrees, respectively, as follows.
Referring to fig. 4, a schematic diagram of a wireless charging coil and a wireless receiving coil misaligned is shown.
As the radio receiving coil RX shown in fig. 4 is rotated by 90 degrees, it can be seen that the distance between the center of RX and the center of TX becomes larger compared to fig. 3.
Referring to fig. 5, there is shown a schematic view of another embodiment in which the wireless charging coil and the wireless receiving coil are not aligned.
As the radio receiving coil RX shown in fig. 4 is rotated by 180 degrees, it can be seen that the distance between the center of RX and the center of TX becomes larger compared to fig. 3.
Therefore, during wireless charging, the stylus cannot rotate, and needs to approach the TX in the direction that the RX is closest to the outer surface, and the current wireless charging scheme of the tablet personal computer is realized by adding an adsorption magnet on one side, and the wireless charging can only be performed in such a posture through the magnetic adsorption of the TX and the RX.
However, the above scheme requires a tablet pc on the TX side and wireless charging corresponding to an application scenario in which the stylus pen is placed on the tablet pc. In addition, except for tablet computers, for example, mobile phones, there is no need to attach a stylus to the mobile phone, and an extra storage box is used for storing the stylus and wirelessly charging the stylus.
The handwriting pen provided by the embodiment of the application can be applied to any terminal device with a handwriting screen, for example, the terminal device can be a tablet, a notebook computer, a mobile phone or a box special for the handwriting pen, the handwriting pen can be contained in the handwriting pen box, and the handwriting pen is wirelessly charged.
Handwriting pen embodiments
The following description will be given taking the terminal device as a stylus pen housing case as an example.
Referring to fig. 6, a schematic view of an assembly of a terminal device and a stylus pen is provided in the embodiment of the present application.
The storage that this application embodiment provided takes 200 can hold stylus 100, places for the convenience of the customer, can design the recess of stylus receiver 200 and stylus 100's appearance phase-match, need not design in addition to the axial location of stylus 100 promptly, because one side is the nib, and one side is the tail, if place upside down, then place not into, mismatch with the recess. For example, a first end of the storage box 200 is used for accommodating a pen tip of the stylus 100, and a second end of the storage box 200 is used for accommodating a pen tail of the stylus 100;
receiver 200 also is equipped with the controller, still is equipped with wireless charging coil in the receiver 200, and the controller is used for controlling wireless transmitting coil and carries out wireless charging for stylus 100, is equipped with wireless receiving coil in the stylus 100.
The terminal device provided above has already approached the axial counterpoint of handwriting pen through the shape of recess, introduces the technical scheme that this application embodiment provided below solves the counterpoint that the handwriting pen realized wireless charging radially.
The following describes the stylus pen provided in the embodiments of the present application in detail with reference to the drawings.
Referring to fig. 7, it is an architecture diagram of a stylus pen provided in an embodiment of the present application.
The stylus pen 100 provided in the embodiment of the present application includes: a wireless receiving coil RX, a rotating mechanism 101 and a controller 102;
the embodiment of the present application does not specifically limit the specific implementation form of the control 102, and for example, the control may be a microprocessor MCU or a single chip microcomputer. In addition, the stylus pen provided by the embodiment of the present application includes a charging chip IC in addition to the controller 102, and the charging chip IC may communicate with the terminal device.
The rotating mechanism 101 is used for driving the wireless receiving coil RX to rotate;
the controller 102 is configured to receive an electrical parameter, which is used for representing the magnitude of wireless charging efficiency, sent by the terminal device, where the terminal device is provided with a wireless transmitting coil, and the wireless transmitting coil is used for transmitting electromagnetic energy to the wireless receiving coil RX;
the controller 102 is configured to control the rotating mechanism 101 to rotate according to the electrical parameter, and when the rotating mechanism 101 rotates, the wireless receiving coil RX is driven to rotate, so that the wireless receiving coil is close to the wireless transmitting coil, and thus the wireless charging efficiency can be improved.
The handwriting pen provided by the embodiment of the application, at the inside slewing mechanism 101 that sets up of handwriting pen, this slewing mechanism 101 can be controlled by the controller 102 of handwriting pen, controller 102 is according to the electric parameter of the wireless charging efficiency size of the sign of receiving from terminal equipment, control slewing mechanism 101's rotation, because slewing mechanism 101 rotates, can drive wireless receiving coil and rotate, consequently, can rotate wireless receiving coil to the position that is close to wireless transmitting coil, specific position can be confirmed according to the size of electric parameter, namely rotate to the great position of wireless charging efficiency. After the handwriting pen is placed well, rotation can be automatically achieved, and the distance between the wireless receiving coil in the handwriting pen and the wireless transmitting coil of the terminal device is enabled to be the nearest, so that the wireless charging efficiency is improved. The technical scheme reduces the requirement for placing the stylus pen, and can realize the closest distance between the wireless transmitting coil and the wireless receiving coil under the control of the internal rotating mechanism and the controller even if the distance between the wireless transmitting coil and the wireless receiving coil is not enabled to be closest at the placing position.
In order to make those skilled in the art better understand the technical solution provided by the embodiment of the present application, a wireless charging system in which a terminal device is used as a transmitting end and a stylus pen is used as a receiving end is described below.
Referring to fig. 8, the figure is a schematic diagram of a wireless charging system according to an embodiment of the present disclosure.
The handwriting pen is internally provided with a rotating mechanism 101 for controlling the wireless receiving coil RX to rotate 360 degrees around the central rotating shaft of the handwriting pen, the rotating mechanism 101 can rotate continuously in a rotating angle, and the rotating mechanism 101 is controlled by a controller 102.
The controller 102 may control the rotation angle of the rotating mechanism 101, and control the functions of the rotating mechanism 101, such as starting, stopping, forward rotation, and reverse rotation, and the embodiment of the present application does not limit the specific manner in which the controller 102 controls the rotating mechanism 101, and for example, the controller may control the communication signals of the buses including I2C.
The rotation mechanism 101 receives a control command from the controller 102, converts an electrical signal of the control command into a mechanical rotation signal, and rotates the wireless reception coil RX around the center axis of the stylus pen.
Wireless receiving coil RX: for receiving the energy coupled from the wireless transmission coil TX.
Receiving end charging chip RXIC: the alternating current transmitted by the wireless receiving coil RX is rectified to charge the battery of the stylus pen, and the RXIC may also receive the communication signal transmitted by the transmitting terminal, demodulate the communication signal, and transmit the demodulated communication signal to the controller 102.
The following describes an implementation manner of a rotating mechanism provided in an embodiment of the present application with reference to the accompanying drawings.
Referring to fig. 9, the inside of a stylus pen provided in the embodiments of the present application is schematically shown.
This embodiment provides a writing pen, slewing mechanism includes: a motor 102, a coil rotating bin 103 and a rotating shaft 101;
a wireless receiving coil RX is arranged in the coil rotating bin 103; the wireless receiving coil RX is disposed in the coil rotating chamber 103 so as to be offset to the axis. The wireless receiving coil RX and the coil rotating bin 103 are relatively static; the coil rotating bin 103 is made of non-ferromagnetic materials and non-metallic materials;
the rotating shaft 101 is connected with the motor 102 and the coil rotating bin 103;
and the motor 102 is used for rotating according to a control instruction sent by the controller to drive the rotating shaft 101 to rotate, and the rotating shaft 101 drives the coil rotating bin 103 to rotate.
The side surface of the coil rotating bin 103 close to the rotating shaft 101 is provided with a rotating sheet 104;
the outer surface of the rotating sheet 104 is connected with the rotating shaft 101, and the inner surface of the rotating sheet 104 is provided with a limiting mechanism for fixing the wireless receiving coil RX, i.e. the limiting mechanism is used for keeping the wireless receiving coil RX and the coil rotating bin 103 relatively stationary.
It should be understood that, in order to ensure that the wireless receiving coil rotates along with the rotating shaft, the rotating shaft and the driving strap are required to have sufficient strength to ensure that the wireless receiving coil is driven to rotate together when the rotating shaft rotates.
In the embodiment of the present application, the size and the shape of the rotating shaft are not specifically limited, and the size and the shape of the coil rotating bin are not specifically limited, for example, the coil rotating bin may be a cylindrical structure, and may also be another open cylindrical structure.
The type of the electrical parameter representing the magnitude of the wireless charging power is not specifically limited in the embodiment of the application, and the type may be, for example, a Q value of a wireless transmitting coil of the terminal device; the electrical parameters may be coupling coefficient between the wireless transmitting coil and the wireless receiving coil, mutual inductance, and the like.
The higher the coupling degree of the wireless transmitting coil and the wireless receiving coil is, the larger the Q value is. Therefore, the controller is specifically configured to control the rotation mechanism to rotate according to the Q value until the Q value reaches the maximum value, and to control the rotation mechanism to rotate to the position where the Q value is the maximum value.
The controller is specifically used for inquiring the Q value of a wireless transmitting coil of the terminal equipment, judging whether the inquiry times are larger than a preset time N, if so, searching the maximum value of the Q value for N times, obtaining a rotating angle corresponding to the maximum value of the Q value, and controlling the rotating mechanism to rotate to the rotating angle; if not, the Q value of the wireless transmitting coil of the terminal equipment is continuously inquired, and the controller controls the rotating mechanism to rotate according to the Q value.
In addition, since the controller cannot know that the Q value is the maximum value at the beginning, generally, the wireless receiving coil is controlled to rotate once after receiving the Q value once, until the Q value reaches the preset number of times N, the maximum value of the Q value in the N times is judged, and then the wireless receiving coil is restored to the position of the maximum value of the Q value.
What has been described above is that the controller determines whether the number of times the Q value is queried reaches N times, and there is also a possible implementation that determines whether the wireless receiving coil has rotated up to one turn, i.e., 360 degrees. The controller inquires the Q value of a wireless transmitting coil of the terminal equipment, judges whether the wireless receiving coil rotates for one circle or not, if so, searches the maximum value of the Q value, obtains a rotating angle corresponding to the maximum value of the Q value, and controls the rotating mechanism to rotate to the rotating angle; if not, the Q value of a wireless transmitting coil of the terminal equipment is continuously inquired, and the controller controls the rotating mechanism to rotate according to the Q value.
For example, the TXIC continuously detects an electrical parameter (such as a Q value), after the stylus pen is placed in the storage box, that is, after the wireless receiving coil RX is placed, the electrical parameter is sent to the RXIC in a wireless charging protocol manner, after the RXIC acquires the Q value, the RXIC starts to notify the controller of the stylus pen, after the controller of the stylus pen receives the Q value, the rotation mechanism is controlled to rotate, after the rotation is completed, the RXIC continues to acquire the Q value from the TXIC, and the above steps are repeated until whether the acquired number of times reaches N is determined, and whether the wireless receiving coil RX has rotated for 1 week can also be determined. N is an integer greater than or equal to 2, the larger N is, the more accurate the control of the rotating position is, namely N cannot be too small, otherwise, the accuracy is low, N needs to be enough to meet the 360-degree rotating range, then the maximum value of the Q value is recorded, the motor is adjusted to drive the rotating shaft to recover to the maximum value position of the Q value, and then normal wireless charging interactive communication is started to perform wireless charging. The numerical value of N is not particularly limited in the embodiments of the present application, and may be, for example, 4, 6, 7, or 8, or even larger.
Method embodiment
Based on the handwriting pen provided by the above embodiment, the embodiment of the application further provides a wireless charging method for the handwriting pen, which is described in detail below with reference to the accompanying drawings.
Referring to fig. 10, the flowchart is a flowchart of a wireless charging method for a stylus pen according to an embodiment of the present disclosure.
The wireless charging method for the handwriting pen provided by the embodiment comprises the following steps: a wireless receiving coil and a rotating mechanism; the rotating mechanism is used for driving the wireless receiving coil to rotate;
s1001: the method comprises the steps that electrical parameters which are used for representing the wireless charging efficiency and sent by terminal equipment are received, and the terminal equipment is provided with a wireless transmitting coil which is used for transmitting electromagnetic energy to a wireless receiving coil;
s1002: the rotation of the rotating mechanism is controlled according to the electrical parameters, and the rotating mechanism drives the wireless receiving coil to rotate when rotating, so that the wireless receiving coil is close to the wireless transmitting coil.
The electrical parameter is the Q value of a wireless transmitting coil of the terminal equipment;
according to the rotation of electrical parameter control slewing mechanism, specifically include:
and controlling the rotating mechanism to rotate according to the Q value until the Q value reaches the maximum value, and controlling the rotating mechanism to rotate to the position with the maximum Q value.
A possible implementation manner judges whether the Q value is inquired for N times, and controls the rotating mechanism to rotate according to the Q value until the Q value reaches the maximum, and controls the rotating mechanism to rotate to the position where the Q value is maximum, and the method specifically comprises the following steps:
inquiring the Q value of a wireless transmitting coil of the terminal equipment, judging whether the inquiry times are larger than a preset time N, if so, searching the maximum value of the Q values of the N times, obtaining a rotating angle corresponding to the maximum value of the Q values, and controlling a rotating mechanism to rotate to the rotating angle; if not, the Q value of the wireless transmitting coil of the terminal equipment is continuously inquired, and the controller controls the rotating mechanism to rotate according to the Q value.
The utility model provides a possible implementation judges whether wireless receiving coil rotates and reaches the round, controls slewing mechanism according to the Q value and rotates, and the position that the control slewing mechanism rotated to the Q value is the biggest up to the Q value, specifically includes:
inquiring the Q value of a wireless transmitting coil of the terminal equipment, judging whether the wireless receiving coil rotates for one circle, if so, searching the maximum value of the Q value, obtaining a rotation angle corresponding to the maximum value of the Q value, and controlling a rotation mechanism to rotate to the rotation angle; if not, the Q value of the wireless transmitting coil of the terminal equipment is continuously inquired, and the controller controls the rotating mechanism to rotate according to the Q value.
Terminal device embodiment
Based on the handwriting pen and the wireless charging method for the handwriting pen provided by the embodiment, the embodiment of the application further provides the terminal device, and the detailed description is provided below with reference to the attached drawings.
Referring to fig. 11, the figure is a schematic diagram of a terminal device according to an embodiment of the present application.
The terminal device provided by the embodiment includes: a storage box 1101, a wireless transmission coil TX, and a controller 201;
a storage box 1101 for storing a stylus; a first end of the storage box 1101 is used for accommodating a pen point of the handwriting pen, and a second end of the storage box is used for accommodating a pen tail of the handwriting pen;
and the controller 201 is configured to control the wireless transmitting coil TX to wirelessly charge the stylus pen.
In addition, the terminal equipment also comprises a TX charging chip TXIC, and the TXIC is used for obtaining an electrical parameter for representing the wireless charging efficiency, such as a Q value of TX, and transmitting the Q value to the stylus pen.
The terminal equipment that this application embodiment provided can carry out axial location for the stylus pen, can send the electric parameter of the wireless power of charging of sign size, for example Q value to the stylus pen in addition, makes the stylus pen control wireless receiving coil according to the Q value and rotates, makes wireless receiving coil be close to the wireless transmitting coil in the terminal equipment, and then makes wireless charging efficiency reach the biggest, improves the charging speed.
The embodiment of the application does not specifically limit the implementation form of the terminal device, and the implementation form may be, for example, a notebook computer, a tablet computer, a storage box of a mobile phone or a stylus pen, or the like.
It should be understood that in the present application, "at least one" means one or more, "a plurality" means two or more. "and/or" for describing an association relationship of associated objects, indicating that there may be three relationships, e.g., "a and/or B" may indicate: only A, only B and both A and B are present, wherein A and B may be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b, c may be single or plural.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present application.

Claims (13)

1. A stylus, comprising: the wireless receiving coil, the rotating mechanism and the controller;
the rotating mechanism is used for driving the wireless receiving coil to rotate;
the controller is used for receiving the electrical parameters which are sent by the terminal equipment and represent the wireless charging efficiency, the terminal equipment is provided with a wireless transmitting coil, and the wireless transmitting coil is used for transmitting electromagnetic energy to the wireless receiving coil;
the controller is used for controlling the rotating mechanism to rotate according to the electrical parameters, and the rotating mechanism drives the wireless receiving coil to rotate when rotating, so that the wireless receiving coil is close to the wireless transmitting coil.
2. The stylus of claim 1, wherein the rotation mechanism comprises: the motor, the coil rotating bin and the rotating shaft are arranged;
the coil rotating bin is internally provided with the wireless receiving coil; the wireless receiving coil and the coil rotating bin are relatively static;
the two ends of the rotating shaft are respectively connected with the motor and the coil rotating bin;
the motor is used for rotating according to the control instruction sent by the controller to drive the rotating shaft to rotate, and the rotating shaft drives the coil rotating bin to rotate.
3. The stylus pen according to claim 2, wherein a side of the coil rotating chamber adjacent to the rotating shaft is provided with a rotating piece;
the outer surface of the rotating sheet is connected with the rotating shaft, the inner surface of the rotating sheet is provided with a limiting mechanism, and the limiting mechanism is used for fixing the wireless receiving coil.
4. The stylus of any one of claims 1-3, further comprising: a receiving end charging chip;
and the receiving end charging chip is used for rectifying the alternating current received by the wireless receiving coil and then charging the battery in the stylus pen.
5. A stylus according to any one of claims 1 to 3, wherein the electrical parameter is the Q-value of a wireless transmitting coil of the terminal device;
the controller is specifically configured to control the rotation mechanism to rotate according to the Q value until the Q value reaches a maximum value, and control the rotation mechanism to rotate to a position where the Q value is maximum.
6. The stylus pen of any one of claims 1-5, wherein the wireless receiving coil is disposed off-axis in the coil rotation chamber.
7. The stylus pen according to claim 5, wherein the controller is specifically configured to query a Q value of a wireless transmitting coil of the terminal device, determine whether the number of queries is greater than a preset number N, if so, search for a maximum Q value of the N times, obtain a rotation angle corresponding to the maximum Q value, and control the rotation mechanism to rotate to the rotation angle; if not, continuously inquiring the Q value of a wireless transmitting coil of the terminal equipment, and controlling the rotation mechanism to rotate by the controller according to the Q value.
8. The stylus pen according to claim 5, wherein the controller is specifically configured to query a Q value of a wireless transmitting coil of the terminal device, determine whether a wireless receiving coil rotates by one turn, if so, search for a maximum Q value, obtain a rotation angle corresponding to the maximum Q value, and control the rotation mechanism to rotate to the rotation angle; if not, the Q value of a wireless transmitting coil of the terminal equipment is continuously inquired, and the controller controls the rotating mechanism to rotate according to the Q value.
9. A wireless charging method for a stylus pen, the stylus pen comprising: a wireless receiving coil and a rotating mechanism; the rotating mechanism is used for driving the wireless receiving coil to rotate;
receiving an electrical parameter which is sent by the terminal device and represents the wireless charging efficiency, wherein the terminal device is provided with a wireless transmitting coil which is used for transmitting electromagnetic energy to the wireless receiving coil;
and controlling the rotating mechanism to rotate according to the electrical parameters, and driving the wireless receiving coil to rotate when the rotating mechanism rotates so as to enable the wireless receiving coil to be close to the wireless transmitting coil.
10. The method of claim 9, wherein the electrical parameter is a Q value of a wireless transmit coil of the terminal device;
the control according to electrical parameter the slewing mechanism rotates, specifically includes:
and controlling the rotating mechanism to rotate according to the Q value until the Q value reaches the maximum value, and controlling the rotating mechanism to rotate to the position with the maximum Q value.
11. The method according to claim 10, wherein the controlling the rotation mechanism to rotate according to the Q value until the Q value reaches a maximum value, the controlling the rotation mechanism to rotate to a position where the Q value is maximum, specifically comprises:
inquiring the Q value of a wireless transmitting coil of the terminal equipment, judging whether the inquiry times are greater than a preset time N, if so, searching the maximum value of the Q value of the N times, obtaining a rotating angle corresponding to the maximum value of the Q value, and controlling the rotating mechanism to rotate to the rotating angle; if not, the Q value of a wireless transmitting coil of the terminal equipment is continuously inquired, and the controller controls the rotating mechanism to rotate according to the Q value.
12. The method according to claim 10, wherein the controlling the rotation mechanism to rotate according to the Q value until the Q value reaches a maximum value, the controlling the rotation mechanism to rotate to a position where the Q value is maximum, specifically comprises:
inquiring the Q value of a wireless transmitting coil of the terminal equipment, judging whether the wireless receiving coil rotates for one circle, if so, searching the maximum value of the Q value, obtaining a rotating angle corresponding to the maximum value of the Q value, and controlling the rotating mechanism to rotate to the rotating angle; if not, the Q value of a wireless transmitting coil of the terminal equipment is continuously inquired, and the controller controls the rotating mechanism to rotate according to the Q value.
13. A terminal device, comprising: the wireless transmitting coil is arranged on the storage box;
the storage box is used for storing the handwriting pen; the first end of the storage box is used for accommodating a pen point of the handwriting pen, and the second end of the storage box is used for accommodating a pen tail of the handwriting pen;
the controller is used for controlling the wireless transmitting coil to wirelessly charge the handwriting pen.
CN202210379334.9A 2022-04-12 2022-04-12 Handwriting pen, wireless charging method and terminal equipment Active CN114756142B (en)

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