CN112751375A - Wireless charging method, wireless charging device and storage medium - Google Patents
Wireless charging method, wireless charging device and storage medium Download PDFInfo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
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- 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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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The present disclosure provides a wireless charging method, a wireless charging apparatus, and a storage medium. The wireless charging method comprises the following steps: when the charging efficiency of the terminal in the current position through the wireless charging transmitting coil is smaller than a preset efficiency threshold, prompting the mobile terminal; after the terminal moves, taking the current position as an initial position before the terminal moves, and determining a moving track of the terminal and a termination position of the terminal after the terminal moves through the initial position and the acceleration gyro sensor; determining a charging recommended position according to the initial position, the moving track and the termination position, wherein the charging recommended position is a position at which the terminal charging efficiency is greater than or equal to a preset efficiency threshold; and the control terminal moves to the charging recommended position to carry out wireless charging. According to the method and the device, the charging recommended position is determined by utilizing the accelerometer gyroscope of the terminal.
Description
Technical Field
The present disclosure relates to the field of wireless charging technologies, and in particular, to a wireless charging method, a wireless charging device, and a storage medium.
Background
In the magnetic coupling wireless charging technology, the charging efficiency of the terminal depends on the positional relationship between the wireless charging transmission coil and the wireless charging reception coil. How to conveniently determine the position relationship between the wireless charging transmitting coil and the wireless charging receiving coil so as to improve the efficiency of wireless charging is a difficult problem of the wireless charging technology.
Disclosure of Invention
To overcome the problems in the related art, the present disclosure provides a wireless charging method, a wireless charging device, and a storage medium.
According to an aspect of the embodiments of the present disclosure, there is provided a wireless charging method applied to a terminal, in which an acceleration gyro sensor is installed, and wireless charging is performed through a wireless charging transmitting coil, the wireless charging method including: when the charging efficiency of the terminal in the current position through the wireless charging transmitting coil is smaller than a preset efficiency threshold, prompting the mobile terminal; after the terminal moves, taking the current position as an initial position before the terminal moves, and determining a moving track of the terminal and a termination position of the terminal after the terminal moves through the initial position and the acceleration gyro sensor; determining a charging recommended position according to the initial position, the moving track and the termination position, wherein the charging recommended position is a position at which the terminal charging efficiency is greater than or equal to a preset efficiency threshold; and the control terminal moves to the charging recommended position to carry out wireless charging.
In one embodiment, determining the recommended charging position according to the initial position, the movement track and the termination position includes: determining first charging efficiency of the terminal for charging at an initial position, second charging efficiency of the terminal for charging at a termination position, and charging efficiency change distribution of the terminal on a moving track; determining a charging efficiency equivalent circle according to the initial position, the termination position and the charging efficiency variation distribution; and determining the circle center position of the charging efficiency equivalent circle as a charging recommended position.
In another embodiment, determining the charging efficiency equivalent circle according to the initial position, the end position, and the charging efficiency variation distribution includes: connecting the initial position and the termination position to obtain a connecting line segment; respectively determining the maximum value and the minimum value of the charging efficiency at two sides of the connecting line section according to the charging efficiency variation distribution; determining an inherent efficiency circle according to the initial position, the termination position and the connecting line segment; and taking an inherent efficiency circle with the center of the circle positioned on one side of which the minimum value of the charging efficiency is greater than the maximum value of the charging efficiency on the other side as a charging efficiency equivalent circle.
In a further embodiment, when the first charging efficiency and the second charging efficiency are the same, the inherent efficiency circle is a circle whose center is located on a different side from the connecting line segment and whose circular arc passes through the initial position and the end position at the same time; when the first charging efficiency is different from the second charging efficiency, the inherent efficiency circle is a maximum circumscribed circle passing through the initial position and circumscribed with the efficiency reduction circle, the center of the efficiency reduction circle is the end position, and the radius of the efficiency reduction circle is smaller than the length of a connecting line segment between the initial position and the end position.
In one embodiment, determining a movement track of the terminal through the initial position and the acceleration gyro sensor includes: initializing an acceleration gyro sensor based on the initial position; acquiring a gravity acceleration space component value and a rotation angular velocity value of the terminal in the moving process based on the initialized acceleration gyro sensor; based on the spatial component values and the rotational angular velocity values, a movement trajectory of the terminal is determined.
In one embodiment, the control terminal moves to a recommended charging position for wireless charging, including: and displaying the charging recommended position on a display interface of the terminal, and prompting the terminal to move to the charging recommended position to carry out the moving direction of wireless charging.
In an embodiment, before determining the recommended charging position according to the initial position, the movement trajectory, and the termination position, the method further includes: and determining the second charging efficiency of the terminal for charging at the termination position as the effective charging efficiency.
According to another aspect of the embodiments of the present disclosure, there is provided a wireless charging device applied to a terminal, in which an acceleration gyro sensor is installed, and wireless charging is performed through a wireless charging transmitting coil, the wireless charging device including: the prompting module is used for prompting the mobile terminal when the charging efficiency of the terminal in the current position through the wireless charging transmitting coil is smaller than a preset efficiency threshold; the positioning module is used for taking the current position as the initial position before the terminal moves after the terminal moves, and determining the moving track of the terminal and the termination position of the terminal after the terminal moves through the initial position and the acceleration gyro sensor; the efficiency judging module is used for determining a charging recommended position according to the initial position, the moving track and the termination position, wherein the charging recommended position is a position at which the charging efficiency of the terminal is greater than or equal to a preset efficiency threshold; and the control module is used for controlling the terminal to move to the charging recommended position for wireless charging.
In an embodiment, the efficiency determination module is configured to determine the recommended charging position according to the initial position, the movement trajectory, and the end position in the following manner: determining first charging efficiency of the terminal for charging at an initial position, second charging efficiency of the terminal for charging at a termination position, and charging efficiency change distribution of the terminal on a moving track; determining a charging efficiency equivalent circle according to the initial position, the termination position and the charging efficiency variation distribution; and determining the circle center position of the charging efficiency equivalent circle as a charging recommended position.
In another embodiment, the efficiency determination module is configured to determine the charging efficiency equivalent circle according to the initial position, the end position, and the charging efficiency variation distribution by: connecting the initial position and the termination position to obtain a connecting line segment; respectively determining the maximum value and the minimum value of the charging efficiency at two sides of the connecting line section according to the charging efficiency variation distribution; determining an inherent efficiency circle according to the initial position, the termination position and the connecting line segment; and taking an inherent efficiency circle with the center of the circle positioned on one side of which the minimum value of the charging efficiency is greater than the maximum value of the charging efficiency on the other side as a charging efficiency equivalent circle.
In a further embodiment, when the first charging efficiency and the second charging efficiency are the same, the inherent efficiency circle is a circle whose center is located on a different side from the connecting line segment and whose circular arc passes through the initial position and the end position at the same time; when the first charging efficiency is different from the second charging efficiency, the inherent efficiency circle is a maximum circumscribed circle passing through the initial position and circumscribed with the efficiency reduction circle, the center of the efficiency reduction circle is the end position, and the radius of the efficiency reduction circle is smaller than the length of a connecting line segment between the initial position and the end position.
In an embodiment, the positioning module is configured to determine a moving track of the terminal through an initial position and an acceleration gyro sensor in the following manner: initializing an acceleration gyro sensor based on the initial position; acquiring a gravity acceleration space component value and a rotation angular velocity value of the terminal in the moving process based on the initialized acceleration gyro sensor; based on the spatial component values and the rotational angular velocity values, a movement trajectory of the terminal is determined.
In an embodiment, the control module is configured to control the terminal to move to the recommended charging location for wireless charging in the following manner: and displaying the charging recommended position on a display interface of the terminal, and prompting the terminal to move to the charging recommended position to carry out the moving direction of wireless charging.
In an embodiment, the efficiency determination module is further configured to determine that the second charging efficiency of the terminal for charging at the termination location is the effective charging efficiency.
According to still another aspect of an embodiment of the present disclosure, there is provided an electronic device including: a memory to store instructions; and the processor is used for calling the instructions stored in the memory to execute any one of the wireless charging methods.
According to yet another aspect of an embodiment of the present disclosure, there is provided a non-transitory computer-readable storage medium including: a non-transitory computer-readable storage medium stores computer-executable instructions that, when executed by a processor, perform any of the above-described wireless charging methods.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the recommended charging position is determined through the charging efficiency and the acceleration gyro sensor installed in the terminal, the recommended charging position can be determined without an additional auxiliary device, the hardware cost is reduced, the magnetic field interference of an external device is avoided, and the charging efficiency is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a flow chart illustrating a wireless charging method according to an example embodiment.
FIG. 2 is a diagram illustrating a coordinate location relationship, according to an exemplary embodiment.
Fig. 3 is a process diagram illustrating a charging recommendation location determination, according to an example embodiment.
Fig. 4 is a graph illustrating wireless charging efficiency versus coil alignment position in accordance with an exemplary embodiment.
Fig. 5 is a graph illustrating another wireless charging efficiency versus coil alignment position in accordance with an example embodiment.
Fig. 6 is a diagram illustrating a wireless charging efficiency profile, according to an example embodiment.
Fig. 7 is a process diagram illustrating another charging recommendation location determination, according to an example embodiment.
Fig. 8 is a schematic diagram illustrating a wireless charging location resolution according to an example embodiment.
Fig. 9 is a schematic diagram illustrating another wireless charging location resolution in accordance with an example embodiment.
Fig. 10 is a flowchart illustrating operation of a wireless charging method according to an exemplary embodiment.
Fig. 11 is a block diagram illustrating a wireless charging device in accordance with an example embodiment.
FIG. 12 is a block diagram illustrating an apparatus in accordance with an example embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
At present, in the related art, when wireless charging is performed, in order to determine the positions of the wireless charging transmitting coil and the wireless charging receiving coil, the external auxiliary device is used for detecting the wireless charging position, so as to confirm the position relationship between the wireless charging receiving coil and the wireless charging transmitting coil in the terminal, and improve the wireless charging efficiency. However, in practical applications, when the external auxiliary device detects the wireless charging position, the external auxiliary device is interfered by the magnetic field between the wireless charging receiving coil and the wireless charging transmitting coil of the terminal, and a filtering algorithm is required to be added to eliminate the interference and determine the wireless charging position, so that the cost is increased.
The embodiment of the disclosure provides a wireless charging method, which determines a charging recommended position by using charging efficiency and an acceleration gyro sensor installed in a terminal, and can determine the charging recommended position without an additional auxiliary device, thereby reducing hardware cost, avoiding magnetic field interference of an external device, and improving charging efficiency.
The terminal of the present disclosure may include: any one or more of a mobile phone, a bracelet, a tablet, etc., which are not limited in this disclosure.
Fig. 1 is a flowchart illustrating a wireless charging method according to an exemplary embodiment, where, as shown in fig. 1, a wireless charging method 10 is applied to a terminal in which an acceleration gyro sensor is installed and wireless charging is performed through a wireless charging transmitting coil, and the wireless charging method includes the following steps.
In step S11, when the charging efficiency of the terminal in the current position through the wireless charging transmitting coil is less than the preset efficiency threshold, the mobile terminal is prompted.
In the present disclosure, the terminal performs wireless charging through a wireless charging transmitting coil. The terminal is provided with a wireless charging receiving coil. In the present disclosure, application software for acquiring the charging efficiency of the terminal may be installed in the terminal. The charging efficiency of the terminal in the current position through the wireless charging transmitting coil is obtained through application software installed on the terminal, and the obtained charging efficiency is compared with a preset efficiency threshold value. On one hand, when the charging efficiency of the terminal at the current position is smaller than the preset charging efficiency threshold value, the user can be prompted to move the position of the terminal through the terminal screen, so that the terminal can be moved to the position where the charging efficiency reaches or is larger than the preset efficiency threshold value. On the other hand, when the charging efficiency of the terminal at the current position is greater than or equal to the preset charging efficiency threshold, wireless charging can be directly performed. For example: the preset efficiency threshold is 80% -90%, and when the charging efficiency of the terminal at the current position is detected to be 60%, the user is prompted to move the terminal; when the charging efficiency of the terminal at the current position is detected to be 85%, the wireless charging can be directly carried out.
It is understood that in the present disclosure, the mobile terminal may be prompted to the user through a voice prompt, an interface prompt, or the like. The manner in which the user is prompted to move the terminal is not limited in this disclosure.
In step S12, after the terminal moves, the current position is used as the initial position before the terminal moves, and the movement track of the terminal and the termination position after the terminal moves are determined by the initial position and the acceleration gyro sensor.
The terminal is mainly used for an acceleration gyro sensor and a terminal for map navigation, motion detection and the like, and the wireless charging receiving coils in the terminal have a fixed position relation, so that the positions of the terminal and the wireless charging receiving coils can be determined according to the acceleration gyro sensor. And then through removing the terminal that is provided with wireless receiving coil that charges, can change the position of wireless receiving coil that charges and wireless transmitting coil that charges. In one embodiment, the acceleration gyro sensor may be an integrated component integrating the accelerometer sensor and the gyro sensor, or may be a component including the accelerometer sensor and the gyro sensor independently of each other.
As shown in fig. 2, 1 is an acceleration gyro sensor coordinate system, 2 is a wireless charging receiving coil coordinate system, and 3 is a terminal coordinate system. In the internal structure of the terminal, the positions of the acceleration gyro sensor and the wireless charging receiving coil are fixed. In an embodiment, after the initial position of the terminal is obtained, the acceleration gyro sensor is initialized to detect a moving track of the terminal in a charging process. The gravity acceleration spatial component value of the terminal in the moving process is obtained through the acceleration gyro sensor, the motion state of the terminal is convenient to determine, the moving track of the terminal in the moving process is further determined by combining the rotation angular velocity value obtained by the acceleration gyro sensor, and the moving track of the wireless charging receiving coil in the terminal is further obtained.
The position of the terminal is determined by the acceleration gyro sensor of the terminal, the position of the wireless charging receiving coil is obtained, the wireless charging receiving coil is not interfered by a magnetic field, and the hardware cost is saved.
In step S13, a charge recommended position is determined from the initial position, the movement trajectory, and the end position.
In this disclosure, the recommended charging position is a position at which the charging efficiency of the terminal is greater than or equal to a preset efficiency threshold. The position where the charging efficiency is greater than or equal to the preset efficiency threshold may be a coil center of the wireless charging transmitting coil, or a position having a specified distance range from the coil center of the wireless charging transmitting coil.
In step S14, the control terminal moves to the recommended charging position and performs wireless charging.
The user can move the terminal to the charging recommended position according to the interface prompt of the application software.
In one embodiment, the charging recommended position is displayed on a display interface of the terminal, and the terminal is prompted to move to the charging recommended position to carry out the moving direction of wireless charging.
According to the method and the device, a guide route map similar to map navigation can be generated in a display interface, the moving route between the current position and the charging recommended position is displayed, the moving direction of the mobile terminal is prompted, a user can conveniently and quickly and accurately move the terminal to the charging recommended position on the device with the wireless charging transmitting coil, the charging efficiency is improved, and the charging time is saved.
Through the embodiment, different positions of the wireless charging receiving coil in the moving process are obtained by the acceleration gyro sensor of the terminal, and the charging recommended position is obtained by obtaining the charging efficiency of the terminal. The user is prompted to move the terminal, hardware cost is saved, magnetic field interference is avoided, and charging efficiency is improved.
Fig. 3 shows a process diagram of charging recommendation location determination in an exemplary embodiment. Referring to fig. 3, determining the charge recommended position according to the initial position, the movement trajectory, and the termination position in step S13 may include the following steps.
In step S131, a first charging efficiency at which the terminal performs charging at the initial position, a second charging efficiency at which the terminal performs charging at the terminal position, and a charging efficiency variation distribution of the terminal on the movement trajectory are determined.
In the present disclosure, a first charging efficiency at an initial position is determined based on a charged amount of the terminal at the initial position on a device including a wireless charging transmitting coil. And determining a second charging efficiency of the terminal position according to the charging amount of the terminal position after the terminal moves on the device containing the wireless charging transmitting coil, and recording the charging efficiency change distribution of the terminal on the moving track. The charging recommendation position can be conveniently determined according to the charging efficiency change of the terminal in the moving process.
In an embodiment, in the process of terminal movement, the movement path coordinates in the movement track and the charging efficiency corresponding to the movement path coordinates are obtained through sampling, so that the charging efficiency change distribution of the movement track is obtained, and meanwhile, the hardware calculation cost is saved.
In an embodiment, before determining the charging recommended position according to the initial position, the moving track and the ending position in step S13, the method further includes: and determining the second charging efficiency of the terminal for charging at the termination position as the effective charging efficiency.
Effective charge efficiency may be understood in this disclosure as a charge value greater than zero. In the disclosure, before the charging recommended position is determined, the corresponding second charging efficiency when the terminal stops moving is determined as the effective charging efficiency. Control to continue wireless charging when the user stops wireless charging is avoided.
In step S132, a charging efficiency equivalent circle is determined from the initial position, the end position, and the charging efficiency variation distribution.
As shown in fig. 4 and 5, the wireless charging efficiency can reflect the relative position relationship between the wireless charging receiving coil and the wireless charging transmitting coil. The wireless charging efficiency is inversely proportional to the horizontal relative displacement between the wireless charging receiving coil and the wireless charging transmitting coil, i.e., the closer the horizontal relative displacement between the wireless charging receiving coil and the wireless charging transmitting coil, the higher the wireless charging efficiency. The wireless charging efficiency is inversely proportional to the vertical relative displacement position between the wireless charging receiving coil and the wireless charging transmitting coil, i.e., the greater the vertical relative displacement between the wireless charging receiving coil and the wireless charging transmitting coil, the lower the wireless charging efficiency.
When the coil center of the wireless charging receiving coil and the center of the wireless charging transmitting coil are in the same relative displacement, the wireless charging efficiency is distributed as shown in fig. 6, and the coil center is taken as the center of a circle and concentric circles with different radiuses are distributed. The same concentric circles of radius, wireless charging efficiency is the same, and each concentric circle is the inherent efficiency circle. The closer the relative position between the radius of the inherent efficiency circle and the circle center is, the higher the wireless charging efficiency is, and the faster the charging speed is; conversely, the farther the relative position between the radius of the inherent efficiency circle and the center of the circle is, the lower the wireless charging efficiency is, and the slower the charging speed is.
In this disclosure, by obtaining the initial position and the end position, it is possible to determine whether the charging efficiency distributions of the positions where the initial position and the end position are located are on the same intrinsic efficiency circle. From the obtained first and second charging efficiencies, two inherent efficiency circles associated with the initial position and the terminal position can be obtained. According to the moving path coordinate of the moving track of the terminal and the charging efficiency change distribution, the unique inherent efficiency circle can be determined to be a charging equivalent circle.
In step S133, the position of the center of the charging efficiency equivalent circle is determined as the charging recommended position.
In the disclosure, the position of the center of the charging equivalent circle is the same as the horizontal relative position of the coil center of the wireless charging transmitting coil and the coil center of the wireless charging receiving coil, and is located at the center of the charging equivalent circle, at this time, the charging efficiency is the highest, and the position of the center of the charging equivalent circle is the charging recommended position. The charging efficiency of the wireless charging is highest when the terminal is moved to the position, and the wireless charging can be carried out quickly.
Through the embodiment, the characteristic of the inherent efficiency circle with different charging efficiency distribution is obtained by utilizing the magnetic field distribution between the wireless charging transmitting coil and the wireless charging receiving coil, the range of the charging recommended position can be quickly reduced according to the charging efficiency of the initial position and the terminating position of the terminal, and the charging recommended position is determined by combining the charging efficiency change distribution of the moving track.
Fig. 7 shows a process diagram of the charging recommendation position determination in another exemplary embodiment. Referring to fig. 7, determining the charging efficiency equivalent circle according to the initial position, the end position, and the charging efficiency variation distribution in step S132 may include the following steps.
In step S1321, the initial position and the end position are connected to obtain a connection line segment.
In the present disclosure, the initial position and the end position are connected to obtain a connecting line segment. And determining the distribution condition of the charging efficiency value of the moving track at two ends of the line section when the terminal moves by taking the connecting line section as a center, so as to conveniently determine the distance of the displacement between the position of the terminal when the terminal moves and the charging recommended position.
In step S1322, the maximum value and the minimum value of the charging efficiency on both sides of the connecting line segment are determined based on the charging efficiency variation distribution, respectively.
In the disclosure, according to the distribution of the charging efficiency of the moving track at the two ends of the line segment, the maximum charging efficiency and the minimum charging efficiency at the two ends of the line segment are respectively obtained. The maximum charging efficiency value of one side of the obtained line segment is compared with the minimum charging efficiency value of the other side of the line segment, and the charging recommended position of the wireless charging transmitting coil is conveniently determined on which side of the two ends of the line segment.
In step S1323, the inherent efficiency circle is determined from the initial position, the end position, and the connecting line segment.
According to the initial position, the termination position, the corresponding first charging efficiency and the second charging efficiency and the charging efficiency values distributed on two sides of the connecting line segment, the positions of two inherent efficiency circles can be quickly obtained, wherein the circle center position of the inherent efficiency circle is the charging recommended position with the maximum probability.
In step S1324, an intrinsic efficiency circle whose center is located on the side where the charging efficiency minimum value is larger than the charging efficiency maximum value on the other side is set as a charging efficiency equivalent circle.
And determining the coil center direction of the terminal closest to the wireless charging transmitting coil in the moving process by comparing the maximum charging efficiency value on one side of the line segment with the minimum charging efficiency value on the other side. And determining that the only inherent efficiency circle is an accurate charging efficiency equivalent circle according to the two inherent efficiency circles obtained in the step and the coil center direction closest to the wireless charging transmitting coil, wherein the circle center position of the charging efficiency equivalent circle is the same as the coil center position of the wireless charging transmitting coil.
Through the embodiment, the distribution of the two sides of the line segment between the initial position and the end position is changed according to the charging efficiency, the position of the charging equivalent circle can be quickly positioned, the central position of the wireless charging transmitting coil is determined, the accurate moving direction can be quickly provided for a user after the terminal stops moving, and the quick charging is facilitated.
In one embodiment, when the first charging efficiency and the second charging efficiency are the same, the inherent efficiency circle is a circle whose center is located at different sides of the connecting line segment and whose arc passes through the initial position and the end position simultaneously; when the first charging efficiency is different from the second charging efficiency, the inherent efficiency circle is a maximum circumscribed circle passing through the initial position and circumscribed with the efficiency reduction circle, the center of the efficiency reduction circle is the end position, and the radius of the efficiency reduction circle is smaller than the length of a connecting line segment between the initial position and the end position.
Referring to fig. 8, the first charging efficiency is the same as the second charging efficiency, and the initial position 4 and the final position 5 of the terminal have the same charging efficiency and belong to two points on the same intrinsic efficiency circle, so that two intrinsic efficiency circles can be obtained. According to the charging efficiency change of the terminal moving track 6, a unique and correct inherent efficiency circle can be obtained, and the position of the center of the circle is the charging recommended position. As shown in fig. 8, the circle whose center is marked by the five-pointed star is the correct inherent efficiency circle.
Referring to fig. 9, if the first charging efficiency is different from the second charging efficiency, the initial position 4 and the final position 5 of the terminal have different charging efficiencies and do not belong to two points on the same intrinsic efficiency circle. At this time, the efficiency reduction circle having a radius smaller than the length of the connection line segment between the initial position and the end position is formed with the end position 5 as the center of the circle, and it means that the coil center of the wireless charging transmitting coil is at all possible positions tangential to the inherent efficiency circle having the initial position on the circle. The inherent efficiency circle is the maximum circumscribed circle circumscribed with the efficiency reduction circle by the initial position 4, and the position of the center of the inherent efficiency circle generated thereby is the charging recommended position with the maximum probability. According to the charging efficiency change of the terminal moving track 6, a unique and correct inherent efficiency circle can be obtained, and the position of the center of the circle is the charging recommended position. As shown in fig. 9, the circle whose center is marked by the five-pointed star is the correct inherent efficiency circle.
The embodiment of the present disclosure will be described below with reference to a wireless charging method as described above.
Fig. 10 is a flowchart illustrating operation of a wireless charging method according to an exemplary embodiment. Referring to fig. 10, the wireless charging method operation flow 20 may include the following steps.
In step S21, the user places the cellular phone in a non-charging state.
In the present disclosure, a user places a cell phone on a wireless charger, at which point the cell phone is in a non-charging state.
In step S22, the cellular phone detects wireless charging.
In the present disclosure, the non-detection of the wireless charging state may be performed by application software installed on the cellular phone. The application software detects whether the mobile phone is charged wirelessly at present. After detecting that the mobile phone is in the wireless charging state, step S23 is executed.
In step S23, it is determined whether the charging efficiency is optimal.
When the application software detects that the current mobile phone is wirelessly charged, whether the charging efficiency of the current wireless charging reaches the optimal charging efficiency is judged according to the charging amount received by the mobile phone, namely whether the charging efficiency reaches a preset charging efficiency threshold value is judged.
When it is detected that the charging efficiency is greater than or equal to the optimum charging efficiency, step S29 may be performed.
When it is detected that the charging efficiency is less than the optimum charging efficiency, step S24 is executed.
In step S24, the current charging efficiency and initialization a + G (accelerometer and gyroscope) are recorded.
In the disclosure, when the charging efficiency is detected to be less than the optimal charging efficiency, the coordinate of the current position of the mobile phone is recorded, the position is the initial position at the moment, and meanwhile, the charging efficiency of the initial position is recorded as the first charging efficiency. In order to record the mobile position of the mobile phone and determine the position of the center of the wireless charging transmitting coil in the wireless charger, the A + G in the mobile phone is initialized to obtain the position coordinate of the acceleration gyro sensor in the mobile phone at the moment, so that the position coordinate of the wireless charging receiving coil can be further conveniently obtained. By initializing the A + G, the coordinates of the mobile path of the mobile phone and the coordinates of the mobile position of the mobile phone can be rapidly acquired, and the cost of acquiring the mobile coordinates by hardware is reduced.
In step S25, the user is prompted to move the cellular phone arbitrarily by a distance in the signal transmission area of the wireless charger.
In the disclosure, a user is prompted to move the mobile phone randomly for a certain distance in a signal transmitting area of the wireless charger through a display interface. According to the wireless charging method, the mobile phone is moved in the signal transmitting area of the wireless charger, and the wireless charging recommended position of the wireless charger can be determined according to the wireless charging method.
In step S26, it is determined whether the charging efficiency is the effective charging efficiency when the mobile phone stops moving.
In the present disclosure, after the mobile phone stops moving, the charging efficiency after the mobile phone stops moving is detected as the second charging efficiency. And judging whether the second charging efficiency is effective charging efficiency, namely determining whether the efficiency point is larger than zero when the mobile phone stops moving. And when the charging efficiency point of the mobile phone is greater than zero, the second charging efficiency is effective charging efficiency. And when the charging efficiency point of the mobile phone is less than zero, the second charging efficiency is invalid charging efficiency. In one embodiment, when the second charging efficiency is an invalid charging efficiency, the mobile phone still needs to continue to be wirelessly charged, but the current termination position of the mobile phone already exceeds the signal transmission area of the wireless charger, and at this time, the user may be prompted to replace the mobile phone on the wireless charger.
In step S27, the current charging efficiency of the mobile phone is recorded and the movement path is stored.
In the disclosure, the coordinates of the termination position of the mobile phone after the mobile phone stops moving and the corresponding second charging efficiency are recorded, and the moving path of the mobile phone is stored, so that the charging efficiency change distribution of the mobile phone in the moving process is convenient to determine.
In step S28, the coil center relative position is determined, and the charge recommended position is obtained.
According to the initial position, the termination position, the moving path, the first charging efficiency, the second charging efficiency and the charging efficiency change distribution of the mobile phone, the central relative position of the wireless charging receiving coil and the wireless charging transmitting coil in the mobile phone can be determined, so that the charging recommended position of the wireless charger for wireless charging is determined.
In step S29, the charge recommended position is displayed on the display interface (UI interface) of the cellular phone.
According to the charging recommendation position, the mobile phone can be prompted to move to the charging recommendation position through the display of the UI.
It can be understood that if the terminal has the highest charging efficiency at this time, the user can be directly prompted that the terminal is currently located at the charging recommended position without moving.
In step S210, the user is prompted to move the position on the UI interface.
According to the mobile phone charging method and device, the mobile direction of the mobile phone is prompted to the user through the UI according to the termination position and the charging recommended position of the mobile phone after the mobile phone stops moving, so that the user can accurately move the mobile phone to the charging recommended position, and rapid wireless charging is facilitated.
Through the embodiment, the wireless charging state of the terminal is detected by using the application software, so that the charging efficiency of the wireless charging of the user terminal can be clearly prompted, and how to move the terminal to the recommended charging position for charging can be clearly displayed, and the rapid wireless charging can be realized.
Based on the same inventive concept, the embodiment of the present disclosure provides a wireless charging device.
Fig. 11 is a block diagram illustrating a wireless charging device according to an example embodiment. Referring to fig. 11, the wireless charging apparatus 100 is applied to a terminal in which an acceleration gyro sensor is mounted and which performs wireless charging through a wireless charging transmitting coil, and the wireless charging apparatus 100 includes: a prompt module 110, a location module 120, an efficiency determination module 130, and a control module 140.
The prompting module 110 is configured to prompt the mobile terminal when the charging efficiency of the terminal in the current position through the wireless charging transmitting coil is smaller than a preset efficiency threshold.
And the positioning module 120 is configured to, after the terminal moves, take the current position as an initial position before the terminal moves, and determine a movement track of the terminal and a termination position of the terminal after the terminal moves through the initial position and the acceleration gyro sensor.
And the efficiency determination module 130 is configured to determine a charging recommended position according to the initial position, the moving track and the termination position, where the charging recommended position is a position where the terminal charging efficiency is greater than or equal to a preset efficiency threshold.
And the control module 140 is configured to control the terminal to move to the recommended charging position for wireless charging.
In an embodiment, the efficiency determination module 130 is configured to determine the recommended charging position according to the initial position, the moving trajectory, and the ending position in the following manner: determining first charging efficiency of the terminal for charging at an initial position, second charging efficiency of the terminal for charging at a termination position, and charging efficiency change distribution of the terminal on a moving track; determining a charging efficiency equivalent circle according to the initial position, the termination position and the charging efficiency variation distribution; and determining the circle center position of the charging efficiency equivalent circle as a charging recommended position.
In another embodiment, the efficiency determination module 130 is configured to determine the charging efficiency equivalent circle according to the initial position, the ending position, and the charging efficiency variation distribution in the following manner: connecting the initial position and the termination position to obtain a connecting line segment; respectively determining the maximum value and the minimum value of the charging efficiency at two sides of the connecting line section according to the charging efficiency variation distribution; determining an inherent efficiency circle according to the initial position, the termination position and the connecting line segment; and taking an inherent efficiency circle with the center of the circle positioned on one side of which the minimum value of the charging efficiency is greater than the maximum value of the charging efficiency on the other side as a charging efficiency equivalent circle.
In a further embodiment, when the first charging efficiency and the second charging efficiency are the same, the inherent efficiency circle is a circle whose center is located on a different side from the connecting line segment and whose circular arc passes through the initial position and the end position at the same time; when the first charging efficiency is different from the second charging efficiency, the inherent efficiency circle is a maximum circumscribed circle passing through the initial position and circumscribed with the efficiency reduction circle, the center of the efficiency reduction circle is the end position, and the radius of the efficiency reduction circle is smaller than the length of a connecting line segment between the initial position and the end position.
In an embodiment, the positioning module 120 is configured to determine the moving track of the terminal through the initial position and the acceleration gyro sensor in the following manner: initializing an acceleration gyro sensor based on the initial position; acquiring a gravity acceleration space component value and a rotation angular velocity value of the terminal in the moving process based on the initialized acceleration gyro sensor; based on the spatial component values and the rotational angular velocity values, a movement trajectory of the terminal is determined.
In an embodiment, the control module 140 is configured to control the terminal to move to the charging recommended position for wireless charging in the following manner: and displaying the charging recommended position on a display interface of the terminal, and prompting the terminal to move to the charging recommended position to carry out the moving direction of wireless charging.
In an embodiment, the efficiency determination module 140 is further configured to determine the second charging efficiency of the terminal charging at the termination position as the effective charging efficiency.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
Fig. 12 is a block diagram illustrating an apparatus 200 for wireless charging according to an example embodiment. For example, the apparatus 200 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.
Referring to fig. 12, the apparatus 200 may include one or more of the following components: a processing component 202, a memory 204, a power component 206, a multimedia component 208, an audio component 210, an input/output (I/O) interface 212, a sensor component 214, and a communication component 216.
The processing component 202 generally controls overall operation of the device 200, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing components 202 may include one or more processors 220 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 202 can include one or more modules that facilitate interaction between the processing component 202 and other components. For example, the processing component 202 can include a multimedia module to facilitate interaction between the multimedia component 208 and the processing component 202.
The multimedia component 208 includes a screen that provides an output interface between the device 200 and the user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 208 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the device 200 is in an operating mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.
The audio component 210 is configured to output and/or input audio signals. For example, audio component 210 includes a Microphone (MIC) configured to receive external audio signals when apparatus 200 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 204 or transmitted via the communication component 216. In some embodiments, audio component 210 also includes a speaker for outputting audio signals.
The I/O interface 212 provides an interface between the processing component 202 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.
The sensor component 214 includes one or more sensors for providing various aspects of status assessment for the device 200. For example, the sensor component 214 may detect an open/closed state of the device 200, the relative positioning of components, such as a display and keypad of the apparatus 200, the sensor component 214 may also detect a change in position of the apparatus 200 or a component of the apparatus 200, the presence or absence of user contact with the apparatus 200, orientation or acceleration/deceleration of the apparatus 200, and a change in temperature of the apparatus 200. The sensor assembly 214 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 214 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 214 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 216 is configured to facilitate wired or wireless communication between the apparatus 200 and other devices. The device 200 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 216 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 216 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the apparatus 200 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.
In an exemplary embodiment, a non-transitory computer readable storage medium comprising instructions, such as memory 204, comprising instructions executable by processor 220 of device 200 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
A non-transitory computer readable storage medium, instructions in which, when executed by a processor of a mobile terminal, enable the mobile terminal to perform the above-described wireless charging method.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (16)
1. A wireless charging method is applied to a terminal, wherein an acceleration gyro sensor is installed in the terminal, and wireless charging is performed through a wireless charging transmitting coil, and the wireless charging method comprises the following steps:
when the charging efficiency of the terminal in the current position through the wireless charging transmitting coil is smaller than a preset efficiency threshold value, prompting to move the terminal;
after the terminal moves, taking the current position as an initial position before the terminal moves, and determining a moving track of the terminal and a termination position of the terminal after the terminal moves through the initial position and the acceleration gyro sensor;
determining a charging recommended position according to the initial position, the moving track and the termination position, wherein the charging recommended position is a position at which the charging efficiency of the terminal is greater than or equal to the preset efficiency threshold;
and controlling the terminal to move to the charging recommended position for wireless charging.
2. The wireless charging method according to claim 1, wherein the determining a recommended charging position according to the initial position, the movement trajectory, and the end position includes:
determining a first charging efficiency of the terminal for charging at the initial position, a second charging efficiency of the terminal for charging at the termination position, and a charging efficiency variation distribution of the terminal on the movement track;
determining a charging efficiency equivalent circle according to the initial position, the termination position and the charging efficiency variation distribution;
and determining the circle center position of the charging efficiency equivalent circle as a charging recommended position.
3. The wireless charging method according to claim 2, wherein determining a charging efficiency equivalent circle from the initial position, the end position, and the charging efficiency variation distribution comprises:
connecting the initial position and the termination position to obtain a connecting line segment;
respectively determining the maximum value and the minimum value of the charging efficiency at two sides of the connecting line section according to the charging efficiency variation distribution;
determining an inherent efficiency circle according to the initial position, the termination position and the connecting line segment;
and taking an inherent efficiency circle with the center of the circle positioned on one side of which the minimum value of the charging efficiency is greater than the maximum value of the charging efficiency on the other side as the charging efficiency equivalent circle.
4. The wireless charging method according to claim 3,
when the first charging efficiency and the second charging efficiency are the same, the inherent efficiency circle is a circle of which the circle center is positioned on different sides of the connecting line segment, and the circular arc passes through the initial position and the ending position simultaneously;
when the first charging efficiency is different from the second charging efficiency, the inherent efficiency circle is a maximum circumscribed circle passing through the initial position and circumscribed with the efficiency reduction circle, the circle center of the efficiency reduction circle is the termination position, and the radius of the efficiency reduction circle is smaller than the length of a connecting line segment between the initial position and the termination position.
5. The wireless charging method of claim 1, wherein determining a movement track of the terminal through the initial position and the acceleration gyro sensor comprises:
initializing the acceleration gyro sensor based on the initial position;
acquiring a gravity acceleration space component value and a rotation angular velocity value of the terminal in the moving process based on the initialized acceleration gyro sensor;
determining a movement trajectory of the terminal based on the spatial component value and the rotational angular velocity value.
6. The wireless charging method of claim 1, wherein controlling the terminal to move to the charging recommended position for wireless charging comprises:
and displaying the charging recommended position on a display interface of the terminal, and prompting the terminal to move to the charging recommended position to carry out wireless charging.
7. The wireless charging method according to claim 1, wherein before determining the recommended charging position according to the initial position, the movement trajectory, and the end position, the method further comprises:
and determining a second charging efficiency of the terminal for charging at the termination position as an effective charging efficiency.
8. The utility model provides a wireless charging device which characterized in that is applied to the terminal, install acceleration gyro sensor in the terminal to carry out wireless charging through wireless transmitting coil that charges, wireless charging device includes:
the prompting module is used for prompting the terminal to move when the charging efficiency of the terminal in the current position through the wireless charging transmitting coil is smaller than a preset efficiency threshold;
the positioning module is used for taking the current position as an initial position before the terminal moves after the terminal moves, and determining a moving track of the terminal and an end position of the terminal after the terminal moves according to the initial position and the acceleration gyro sensor;
the efficiency judging module is used for determining a charging recommended position according to the initial position, the moving track and the termination position, wherein the charging recommended position is a position at which the charging efficiency of the terminal is greater than or equal to the preset efficiency threshold;
and the control module is used for controlling the terminal to move to the charging recommended position for wireless charging.
9. The wireless charging device of claim 8, wherein the efficiency determination module is configured to determine the recommended charging position according to the initial position, the movement track, and the end position in the following manner:
determining a first charging efficiency of the terminal for charging at the initial position, a second charging efficiency of the terminal for charging at the termination position, and a charging efficiency variation distribution of the terminal on the movement track;
determining a charging efficiency equivalent circle according to the initial position, the termination position and the charging efficiency variation distribution;
and determining the circle center position of the charging efficiency equivalent circle as a charging recommended position.
10. The wireless charging device of claim 9, wherein the efficiency determination module is configured to determine the charging efficiency equivalent circle according to the initial position, the end position, and the charging efficiency variation distribution by:
connecting the initial position and the termination position to obtain a connecting line segment;
respectively determining the maximum value and the minimum value of the charging efficiency at two sides of the connecting line section according to the charging efficiency variation distribution;
determining an inherent efficiency circle according to the initial position, the termination position and the connecting line segment;
and taking an inherent efficiency circle with the center of the circle positioned on one side of which the minimum value of the charging efficiency is greater than the maximum value of the charging efficiency on the other side as the charging efficiency equivalent circle.
11. The wireless charging apparatus of claim 10,
when the first charging efficiency and the second charging efficiency are the same, the inherent efficiency circle is a circle of which the circle center is positioned on different sides of the connecting line segment, and the circular arc passes through the initial position and the ending position simultaneously;
when the first charging efficiency is different from the second charging efficiency, the inherent efficiency circle is a maximum circumscribed circle passing through the initial position and circumscribed with the efficiency reduction circle, the circle center of the efficiency reduction circle is the termination position, and the radius of the efficiency reduction circle is smaller than the length of a connecting line segment between the initial position and the termination position.
12. The wireless charging device of claim 8, wherein the positioning module is configured to determine the moving track of the terminal through the initial position and the acceleration gyro sensor in the following manner:
initializing the acceleration gyro sensor based on the initial position;
acquiring a gravity acceleration space component value and a rotation angular velocity value of the terminal in the moving process based on the initialized acceleration gyro sensor;
determining a movement trajectory of the terminal based on the spatial component value and the rotational angular velocity value.
13. The wireless charging device of claim 8, wherein the control module is configured to control the terminal to move to the charging recommended position for wireless charging according to the following manners:
and displaying the charging recommended position on a display interface of the terminal, and prompting the terminal to move to the charging recommended position to carry out wireless charging.
14. The wireless charging apparatus of claim 8, wherein the efficiency determination module is further configured to:
and determining a second charging efficiency of the terminal for charging at the termination position as an effective charging efficiency before determining a charging recommended position according to the initial position, the moving track and the termination position.
15. An electronic device, wherein the electronic device comprises:
a memory to store instructions; and
a processor for invoking the instructions stored by the memory to perform the wireless charging method of any one of claims 1-7.
16. A non-transitory computer-readable storage medium storing computer-executable instructions that, when executed by a processor, perform the wireless charging method of any one of claims 1-7.
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