CN114756142B - 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
CN114756142B
CN114756142B CN202210379334.9A CN202210379334A CN114756142B CN 114756142 B CN114756142 B CN 114756142B CN 202210379334 A CN202210379334 A CN 202210379334A CN 114756142 B CN114756142 B CN 114756142B
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China
Prior art keywords
coil
value
wireless
rotating
rotate
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CN202210379334.9A
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CN114756142A (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 handwriting pen 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 the electrical parameters representing the wireless charging efficiency sent by the terminal equipment, and the terminal equipment is provided with a wireless transmitting coil which 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 distance between the wireless receiving coil and the wireless transmitting coil of the terminal equipment is nearest, and the wireless charging efficiency is improved. According to the technical scheme, the requirement for placing the handwriting pen is reduced, and the wireless transmitting coil and the wireless receiving coil are nearest in distance 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 equipment such as a tablet computer or a mobile phone, a handwriting pen is configured, and in order to be attractive, the charging mode of the current handwriting pen mainstream adopts wireless charging, namely, the terminal equipment is utilized to carry out wireless charging on the handwriting pen. The terminal equipment is provided with a transmitting coil TX and the stylus pen is provided with a receiving coil RX.
However, because the volume of the handwriting pen is small and the limitation of the diameter of the handwriting pen is limited, most of the transmitting coil and the receiving coil of the current handwriting pen which are charged wirelessly adopt magnetic rod type wireless charging, and compared with the coupling mode of the planar coil of the wireless charging of the mobile phone, larger charging power can be realized 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, so as 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 reduced, the charging efficiency is drastically reduced, and a predetermined charging power target is not achieved, or even charging is not possible. However, when a user generally places a stylus pen, the distance between the transmitting coil and the receiving coil may not be made to be the nearest, and in order to solve this problem, a magnetic attraction method is used to ensure that the distance between the transmitting coil and the receiving coil is the nearest, but a magnet must be provided in the stylus pen.
Because the magnet occupies the length of the handwriting pen, the handwriting pen is not suitable for occasions requiring a short handwriting pen size.
Disclosure of Invention
In order to solve the problems, the application provides a handwriting pen, a wireless charging method and terminal equipment, which can ensure higher wireless charging efficiency under the condition of not arranging a magnet.
In a first aspect, the present application provides a stylus comprising: 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 the electrical parameters representing the wireless charging efficiency sent by the terminal equipment, and the terminal equipment is provided with a wireless transmitting coil which 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.
In 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 a motor and a coil rotating bin;
and the motor is used for rotating according to the control instruction sent by the controller, driving the rotating shaft to rotate, and driving the coil rotating bin to rotate by the rotating shaft.
One possible implementation way is that the side surface of the coil rotating bin, which is close to the rotating shaft, is provided with a rotating piece;
the outer surface of the rotating piece is connected with the rotating shaft, and the inner surface of the rotating piece is provided with a limiting mechanism which is used for fixing the wireless receiving coil.
One possible implementation manner 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 a battery in the handwriting pen.
One possible implementation way is that the electrical parameter is the Q value of the 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, and controlling the rotating mechanism to rotate to the position with the maximum Q value.
One possible implementation, the wireless receiving coil is biased toward the axial center in the coil rotating housing.
A possible implementation manner, the controller is specifically configured to query a Q value of the wireless transmitting coil of the terminal device, determine whether the number of times of query is greater than a preset number of times N, if so, search a maximum value of the Q values of N times, obtain a rotation angle corresponding to the maximum value of the 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.
A possible implementation manner, a controller, which is specifically configured to query a Q value of a wireless transmitting coil of a terminal device, determine whether a wireless receiving coil rotates to reach a circle, if so, search a maximum value of the Q value, obtain a rotation angle corresponding to the maximum value of the Q value, and control 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 application provides a wireless charging method of a handwriting pen, which 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;
receiving electrical parameters representing the wireless charging efficiency sent by terminal equipment, wherein 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;
and controlling the rotation mechanism to rotate according to the electrical parameters, and driving the wireless receiving coil to rotate when the rotation mechanism rotates, so that the wireless receiving coil is close to the wireless transmitting coil.
One possible implementation way is that the electrical parameter is the Q value of the wireless transmitting coil of the terminal device;
the rotation mechanism is controlled to rotate according to the electrical parameters, and the method specifically comprises the following steps:
and controlling the rotating mechanism to rotate according to the Q value until the Q value reaches the maximum, and controlling the rotating mechanism to rotate to the position with the maximum Q value.
One possible implementation manner, according to the Q value, controls the rotation mechanism to rotate until the Q value reaches the maximum, and controls the rotation mechanism to rotate to the position with the maximum Q value, specifically includes:
inquiring the Q value of a wireless transmitting coil of the terminal equipment, judging whether the inquiring times are larger than the preset times 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.
One possible implementation manner, according to the Q value, controls the rotation mechanism to rotate until the Q value reaches the maximum, and controls the rotation mechanism to rotate to the position with the maximum Q value, specifically includes:
inquiring the Q value of a wireless transmitting coil of the terminal equipment, judging whether the wireless receiving coil rotates to reach 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 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 application also provides a terminal device, comprising: the device 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 the pen point of the handwriting pen, and the second end of the storage box is used for accommodating the 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 at least the following advantages:
according to the handwriting pen provided by the embodiment of the application, the rotating mechanism is arranged in the handwriting pen, the rotating mechanism can be controlled by the controller of the handwriting pen, the controller controls the rotation of the rotating mechanism according to the electrical parameter representing the wireless charging efficiency received from the terminal equipment, and the wireless receiving coil is driven to rotate when the rotating mechanism rotates, so that the wireless receiving coil can be rotated to a position close to the wireless transmitting coil, and the specific position can be determined according to the electrical parameter, namely, the position with higher wireless charging efficiency is rotated. Therefore, after the handwriting pen is placed, the rotation can be automatically realized, and the distance between the wireless receiving coil in the handwriting pen and the wireless transmitting coil of the terminal equipment is nearest, so that the wireless charging efficiency is improved. According to the technical scheme, the requirement for placing the handwriting pen is reduced, and even if the placed position does not enable the distance between the wireless transmitting coil and the wireless receiving coil to be closest, the distance between the wireless transmitting coil and the wireless receiving coil can be closest under the control of the internal rotating mechanism and the controller.
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 illustration of a wireless charging coil and wireless receiving coil alignment;
FIG. 4 is a schematic illustration of another wireless charging coil and wireless receiving coil not aligned;
FIG. 5 is a schematic illustration of yet another wireless charging coil and wireless receiving coil not aligned;
fig. 6 is an assembly schematic diagram of a terminal device and a handwriting pen according to an embodiment of the present application;
FIG. 7 is a schematic diagram of a stylus according to an embodiment of the present application;
fig. 8 is a schematic diagram of a wireless charging system according to an embodiment of the present application;
FIG. 9 is a schematic diagram of the inside of a stylus according to an embodiment of the present application;
fig. 10 is a flowchart of a wireless charging method of a handwriting pen according to an embodiment of the present application;
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 personnel in the technical field more clearly understand the scheme of the application, the application scenario of the technical scheme of the application is first described below.
Referring to fig. 1, a schematic diagram of a terminal device equipped with a stylus is shown.
For convenience of use, many tablet computers 200 are currently equipped with a keyboard K, and tablet computers 200 are also equipped with handwriting pen 100.
In the present application, the handwriting pen 100 is disposed at the top end of the tablet pc 200, that is, the top suction type tablet pc 200 can perform wireless charging for the handwriting pen 100. However, since the stylus 100 needs to be stably placed on the top of the tablet 200, a magnet needs to be provided in the stylus 100. This results in a longer length of the stylus 100, which may be a hindrance to downsizing.
The stylus 100 and tablet 200 of fig. 1 are merely illustrative and specific product configurations may be distinguished.
Referring to fig. 2, a schematic diagram of wireless charging corresponding to fig. 1 is shown.
When the tablet pc 200 charges the handwriting pen 100, the wireless receiving coil RX is disposed in the handwriting pen 100, and the wireless transmitting coil TX is disposed in the tablet pc 200, so that the wireless transmitting coil TX can 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 effect of wireless charging is, and the higher the wireless charging efficiency is.
In engineering, the wireless transmitting coil TX and the wireless receiving coil RX are brought close to each other as much as possible. The wireless receiving coil RX in the stylus pen 100 is usually designed to be eccentric, and when charging, one 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.
The cross-sectional view shown in fig. 3, the wireless transmit coil TX is aligned with and positioned closest to the wireless receive coil RX.
When the wireless charging is performed, the manner needs to be kept, if the stylus pen cannot rotate, and if the stylus pen rotates, electromagnetic coupling fields of two coils are transformed, and the distance between the center of RX and the center of TX is increased, the coupling coefficient is poor, so that the wireless charging efficiency is greatly reduced, and even charging cannot be performed.
The following fig. 4 and 5 are schematic diagrams of the wireless receiving coil RX rotated 90 degrees and 180 degrees, respectively.
Referring to fig. 4, a schematic diagram of a wireless charging coil and a wireless receiving coil not aligned is shown.
The wireless receiving coil RX shown in fig. 4 is rotated by 90 degrees, and it can be seen that the center of RX is spaced from the center of TX by a larger distance than in fig. 3.
Referring to fig. 5, a schematic diagram of yet another wireless charging coil and wireless receiving coil are not aligned.
The wireless receiving coil RX shown in fig. 4 is rotated 180 degrees, and it can be seen that the center of RX is spaced a greater distance from the center of TX than in fig. 3.
Therefore, when the stylus pen is in wireless charging, the stylus pen cannot rotate, the stylus pen must be close to the TX along the direction that the RX is closest to the outer surface, the wireless charging scheme of the tablet personal computer is realized by adding an adsorption magnet on one side, and the stylus pen can only be forced to perform wireless charging in such a posture through the adsorption of the magnets of the TX and the RX.
However, the above scheme is a scheme requiring that the TX side is a tablet computer and the stylus pen is placed on the tablet computer in an application scenario to correspond to wireless charging. In addition, besides tablet computers, such as mobile phones, there is no need to adsorb the handwriting pen to the mobile phone, and an additional storage box is used to store the handwriting pen and to wirelessly charge the handwriting pen.
The handwriting pen provided by the embodiment of the application can be applied to any terminal equipment with a handwriting screen, for example, the terminal equipment can be a tablet, a notebook computer, a mobile phone or a special box for the handwriting pen, the handwriting pen box can be used for accommodating the handwriting pen and carrying out wireless charging on the handwriting pen, and the embodiment of the application is not particularly limited to the specific implementation type of the terminal equipment.
Stylus embodiments
The following description will take a terminal device as an example of a stylus storage case.
Referring to fig. 6, an assembly schematic diagram of a terminal device and a handwriting pen is provided in an embodiment of the present application.
The storage holder 200 provided in the embodiment of the present application can accommodate the stylus 100, and in order to facilitate placement by a customer, the groove of the stylus storage box 200 can be designed to match with the shape of the stylus 100, that is, the axial positioning of the stylus 100 does not need to be additionally designed, because one side is a pen point and the other side is a pen tail, if the pen tail is placed upside down, the pen cannot be placed in the groove, and the pen is not matched with the groove. For example, a first end of the storage case 200 is used for accommodating a pen tip of the stylus 100, and a second end of the storage case 200 is used for accommodating a pen tail of the stylus 100;
the storage box 200 is also provided with a controller, the storage box 200 is also provided with a wireless charging coil, the controller is used for controlling the wireless transmitting coil to wirelessly charge the handwriting pen 100, and the handwriting pen 100 is provided with a wireless receiving coil.
The terminal equipment provided by the embodiment of the application has the advantages that the axial alignment of the handwriting pen is approximate to the shape of the groove, and the technical scheme provided by the embodiment of the application is introduced to realize the radial alignment of the handwriting pen for wireless charging.
The handwriting pen provided by the embodiment of the application is described in detail below with reference to the accompanying drawings.
Referring to fig. 7, the architecture diagram of a stylus according to an embodiment of the present application is shown.
The stylus 100 provided in the embodiment of the present application includes: a wireless receiving coil RX, a rotation mechanism 101, and a controller 102;
the embodiment of the present application is not particularly limited to a specific implementation form of the control 102, and may be, for example, a microprocessor MCU or a single-chip microcomputer. In addition, the handwriting pen provided by the embodiment of the application comprises a charging chip IC besides the controller 102, and the charging chip IC can be communicated with the terminal equipment.
A rotation mechanism 101 for driving the wireless receiving coil RX to rotate;
a controller 102, configured to receive an electrical parameter representing a 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 configured to transmit electromagnetic energy to the wireless receiving coil RX;
and the controller 102 is configured to control the rotation mechanism 101 to rotate according to the electrical parameter, and when the rotation mechanism 101 rotates, drive the wireless receiving coil RX to rotate, so that the wireless receiving coil is close to the wireless transmitting coil, thereby improving wireless charging efficiency.
According to the handwriting pen provided by the embodiment of the application, the rotating mechanism 101 is arranged in the handwriting pen, the rotating mechanism 101 can be controlled by the controller 102 of the handwriting pen, the controller 102 controls the rotation of the rotating mechanism 101 according to the electrical parameter representing the wireless charging efficiency received from the terminal equipment, and the wireless receiving coil is driven to rotate when the rotating mechanism 101 rotates, so that the wireless receiving coil can be rotated to a position close to the wireless transmitting coil, and the specific position can be determined according to the electrical parameter, namely, the position with higher wireless charging efficiency is rotated. Therefore, after the handwriting pen is placed, the rotation can be automatically realized, and the distance between the wireless receiving coil in the handwriting pen and the wireless transmitting coil of the terminal equipment is nearest, so that the wireless charging efficiency is improved. According to the technical scheme, the requirement for placing the handwriting pen is reduced, and even if the placed position does not enable the distance between the wireless transmitting coil and the wireless receiving coil to be closest, the distance between the wireless transmitting coil and the wireless receiving coil can be closest under the control of the internal rotating mechanism and the controller.
In order to enable those skilled in the art to better understand the technical solution provided by the embodiments of the present application, the following description describes a wireless charging system with a terminal device as a transmitting end and a stylus as a receiving end.
Referring to fig. 8, a schematic diagram of a wireless charging system according to an embodiment of the present application is shown.
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 angle of the rotating mechanism 101 can be continuous, and the controller 102 of the rotating mechanism 101 is used for controlling.
The controller 102 may control the rotation angle of the rotation mechanism 101, and control the functions of opening, stopping, forward rotation, reverse rotation, etc. of the rotation mechanism 101, and the embodiment of the present application does not limit the specific manner in which the controller 102 controls the rotation mechanism 101, for example, may use communication signals including I2C and other buses.
The rotation mechanism 101 receives a control command from the controller 102, converts an electric signal of the control command into a mechanical rotation signal, and rotates the wireless receiving coil RX around the center axis of the stylus pen.
Wireless receiving coil RX: for receiving energy coupled by the wireless transmit coil TX.
Receiving end charging chip RXIC: the battery of the handwriting pen is charged after rectifying the alternating current transmitted by the wireless receiving coil RX, in addition, the RXIC may also receive the communication signal sent by the transmitting end, demodulate the communication signal, and send the demodulated communication signal to the controller 102.
An implementation manner of a rotating mechanism provided by an embodiment of the present application is described below with reference to the accompanying drawings.
Referring to fig. 9, a schematic diagram of the inside of a stylus according to an embodiment of the present application is shown.
The handwriting pen that this embodiment provided, 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 rotation chamber 103 so as to be biased toward the axial center. 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 a motor 102 and a coil rotating bin 103;
and the motor 102 is used for rotating according to a control instruction sent by the controller, driving the rotating shaft 101 to rotate, and driving the coil rotating bin 103 to rotate by the rotating shaft 101.
The side surface of the coil rotating bin 103, which is close to the rotating shaft 101, is provided with a rotating piece 104;
the outer surface of the rotating plate 104 is connected with the rotating shaft 101, and the inner surface of the rotating plate 104 is provided with a limiting mechanism for fixing the wireless receiving coil RX, namely, the limiting mechanism is used for keeping the wireless receiving coil RX and the coil rotating bin 103 relatively static.
It should be appreciated that in order to ensure that the wireless receiving coil rotates with the rotating shaft, the rotating shaft and the driving piece are required to have sufficient strength, and when the rotating shaft rotates, the wireless receiving coil is driven to rotate together.
The size and shape of the rotating shaft are not particularly limited in the embodiment of the application, and the size and shape of the coil rotating bin are not particularly limited, for example, the coil rotating bin can be of a cylindrical structure or of other cylindrical structures with openings.
The embodiment of the application is not particularly limited to the type of the electrical parameter representing the magnitude of the wireless charging power, and can be, for example, the Q value of a wireless transmitting coil of the terminal equipment; and the coupling coefficient between the wireless transmitting coil and the wireless receiving coil, mutual inductance and other electrical parameters can be adopted.
The higher the degree of coupling between the wireless transmitting coil and the wireless receiving coil, the greater the Q value. 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, and control the rotation mechanism to rotate to the position where the Q value is the maximum.
The controller is specifically used for inquiring the Q value of the wireless transmitting coil of the terminal equipment, judging whether the inquiring times are greater than the preset times 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 preset number of times N is reached, the maximum value of the Q value in the N times is determined, and then the position of the wireless receiving coil to the maximum value of the Q value is restored.
The above description describes that the controller determines whether the number of times the Q value is interrogated reaches N, and also a possible implementation is to determine whether the wireless receiving coil has rotated up to one turn, i.e. 360 degrees. The controller inquires the Q value of the wireless transmitting coil of the terminal equipment, judges whether the wireless receiving coil rotates to one circle, if so, searches the maximum value of the Q value, obtains the rotating angle corresponding to the maximum value of the Q value, and controls the rotating mechanism to rotate to the rotating angle; if not, continuously inquiring the Q value of the wireless transmitting coil of the terminal equipment, and controlling the rotating mechanism to rotate by the controller 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 through a wireless charging protocol, after the RXIC acquires the Q value, the controller of the stylus pen is notified, after the controller of the stylus pen receives the Q value, the controller of the stylus pen controls the rotating mechanism to rotate, after the rotating is completed, the RXIC continues to acquire the Q value from the TXIC, and the process is repeated until the acquired times reach N, and also whether the wireless receiving coil RX has rotated for 1 week can be judged. N is an integer greater than or equal to 2, the greater N is, the more accurate the rotation control position is, namely N cannot be too small, otherwise, the accuracy is lower, N needs to be enough to meet the range of 360 degrees of rotation, then the maximum value of the Q value is recorded, the motor is adjusted to drive the rotation 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 value of N in the embodiment of the present application is not particularly limited, and may be, for example, 4, or 6, or 7 or 8, or even larger.
Method embodiment
Based on the handwriting pen provided by the embodiment, the embodiment of the application also provides a wireless charging method of the handwriting pen, and the wireless charging method is described in detail below with reference to the accompanying drawings.
Referring to fig. 10, the flowchart of a wireless charging method for a handwriting pen according to an embodiment of the application is shown.
The wireless charging method for the handwriting pen provided by the embodiment, wherein the handwriting pen 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: receiving electrical parameters representing the wireless charging efficiency sent by terminal equipment, wherein 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;
s1002: and controlling the rotation mechanism to rotate according to the electrical parameters, and driving the wireless receiving coil to rotate when the rotation mechanism rotates, 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;
the rotation mechanism is controlled to rotate according to the electrical parameters, and the method specifically comprises the following steps:
and controlling the rotating mechanism to rotate according to the Q value until the Q value reaches the maximum, and controlling the rotating mechanism to rotate to the position with the maximum Q value.
One possible implementation manner, judging whether the query Q value reaches N times, controlling the rotation mechanism to rotate according to the Q value until the Q value reaches the maximum, and controlling the rotation mechanism to rotate to the position with the maximum Q value specifically includes:
inquiring the Q value of a wireless transmitting coil of the terminal equipment, judging whether the inquiring times are larger than the preset times 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.
One possible implementation manner is to determine whether the wireless receiving coil rotates to reach a circle, control the rotation mechanism to rotate according to the Q value until the Q value reaches the maximum, and control the rotation mechanism to rotate to the position with the maximum Q value, which specifically includes:
inquiring the Q value of a wireless transmitting coil of the terminal equipment, judging whether the wireless receiving coil rotates to reach 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 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.
Terminal equipment embodiment
Based on the handwriting pen and the wireless charging method of the handwriting pen provided by the embodiment, the embodiment of the application also provides a terminal device, and the terminal device is described in detail below with reference to the accompanying drawings.
Referring to fig. 11, the diagram is a schematic diagram of a terminal device provided in an embodiment of the present application.
The terminal device provided in this embodiment includes: a housing 1101, a wireless transmitting coil TX, and a controller 201;
a storage box 1101 for storing a stylus pen; the first end of the storage box 1101 is used for accommodating the pen tip of the handwriting pen, and the second end of the storage box is used for accommodating the pen tail of the handwriting pen;
the controller 201 is configured to control the wireless transmitting coil TX to wirelessly charge the handwriting pen.
In addition, the terminal device further comprises a TX charging chip TXIC, wherein the TXIC is used for obtaining an electrical parameter representing wireless charging efficiency, such as a Q value of TX, and sending the Q value to the stylus.
The terminal equipment provided by the embodiment of the application can axially position the handwriting pen, and can send the electrical parameter representing the wireless charging power to the handwriting pen, such as a Q value, so that the handwriting pen can control the wireless receiving coil to rotate according to the Q value, the wireless receiving coil is close to the wireless transmitting coil in the terminal equipment, the wireless charging efficiency is maximized, and the charging speed is improved.
The embodiment of the application is not particularly limited to the implementation form of the terminal equipment, and can be a storage box of a notebook computer, a tablet computer, a mobile phone or a handwriting pen and the like.
It should be understood that in the present application, "at least one (item)" means one or more, and "a plurality" means two or more. "and/or" for describing the association relationship of the association object, the representation may have three relationships, for example, "a and/or B" may represent: only a, only B and both a and B are present, wherein a, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). 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 for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims (10)

1. A stylus, comprising: 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 an electrical parameter representing the wireless charging efficiency sent by the terminal equipment, wherein the electrical parameter is the Q value of a wireless transmitting coil of the terminal equipment, the terminal equipment is provided with the wireless transmitting coil, and the wireless transmitting coil is used for transmitting electromagnetic energy to the wireless receiving coil;
the rotating mechanism comprises: the motor, the coil rotating bin and the rotating shaft;
the 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;
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;
and the controller is used for controlling the rotating mechanism to rotate according to the Q value until the rotating mechanism is controlled to rotate to the position with the maximum Q value, 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 a side of the coil rotating bin adjacent to the rotating shaft is provided with a rotating piece;
the outer surface of the rotating piece is connected with the rotating shaft, and the inner surface of the rotating piece is provided with a limiting mechanism which is used for fixing the wireless receiving coil.
3. The stylus of any one of claims 1-2, 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 handwriting pen.
4. The stylus pen of claim 1, wherein the wireless receiving coil is biased toward an axial center in the coil rotating housing.
5. The stylus pen according to claim 1, wherein the controller is specifically configured to query a Q value of the wireless transmitting coil of the terminal device, determine whether the number of times of query is greater than a preset number of times N, and if so, search a maximum value of the Q values N times, obtain a rotation angle corresponding to the maximum value of the Q values, and control the rotation mechanism to rotate to the rotation angle; if not, continuously inquiring the Q value of the wireless transmitting coil of the terminal equipment, and controlling the rotating mechanism to rotate by the controller according to the Q value.
6. The stylus pen of claim 1, 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 to reach a circle, and if so, search a maximum value of the Q value, obtain a rotation angle corresponding to the maximum value of the Q value, and control the rotation mechanism to rotate to the rotation angle; if not, continuously inquiring the Q value of the wireless transmitting coil of the terminal equipment, and controlling the rotating mechanism to rotate by the controller according to the Q value.
7. A wireless charging method for a stylus, the stylus comprising: a wireless receiving coil and a rotating mechanism; the rotating mechanism is used for driving the wireless receiving coil to rotate; the rotating mechanism comprises: the motor, the coil rotating bin and the rotating shaft; the 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; 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;
receiving an electrical parameter representing the wireless charging efficiency sent by a terminal device, wherein the electrical parameter is the Q value of a wireless transmitting coil of the terminal device, the terminal device is provided with the wireless transmitting coil, and the wireless transmitting coil is used for transmitting electromagnetic energy to the wireless receiving coil;
and controlling the rotating mechanism to rotate according to the Q value until the rotating mechanism is controlled to rotate to the position with the maximum Q value, 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.
8. The method of claim 7, wherein said controlling the rotation of the rotation mechanism according to the Q value until the Q value reaches a maximum, comprises:
inquiring the Q value of a wireless transmitting coil of the terminal equipment, judging whether the inquiring times are larger than the preset times 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, continuously inquiring the Q value of the wireless transmitting coil of the terminal equipment, and controlling the rotating mechanism to rotate by the controller according to the Q value.
9. The method of claim 7, wherein said controlling the rotation of the rotation mechanism according to the Q value until the Q value reaches a maximum, comprises:
inquiring the Q value of a wireless transmitting coil of the terminal equipment, judging whether the wireless receiving coil rotates to 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 the rotation mechanism to rotate to the rotation angle; if not, continuously inquiring the Q value of the wireless transmitting coil of the terminal equipment, and controlling the rotating mechanism to rotate by the controller according to the Q value.
10. A terminal device, comprising: a storage case, a wireless transmitting coil, a controller and the stylus pen of any one of claims 1-6;
the storage box is used for storing the handwriting pen; the first end of the storage box is used for accommodating the pen point of the handwriting pen, and the second end of the storage box is used for accommodating the 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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