CN112751375B - 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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- CN112751375B CN112751375B CN201911050100.4A CN201911050100A CN112751375B CN 112751375 B CN112751375 B CN 112751375B CN 201911050100 A CN201911050100 A CN 201911050100A CN 112751375 B CN112751375 B CN 112751375B
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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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- 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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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The present disclosure provides a wireless charging method, a wireless charging device, and a storage medium. The wireless charging method comprises the following steps: prompting the mobile terminal when the charging efficiency of the terminal at the current position through the wireless charging transmitting coil is smaller than a preset efficiency threshold; 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 after the terminal moves through the initial position and an 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 of which the terminal charging efficiency is greater than or equal to a preset efficiency threshold; and the control terminal moves to a charging recommended position to perform wireless charging. The charging recommended position is determined by the accelerometer gyroscope of the terminal.
Description
Technical Field
The disclosure relates to the technical field of wireless charging, and in particular relates 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 transmitting coil and the wireless charging receiving coil. How to conveniently determine the positional 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 apparatus, 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 which performs wireless charging through a wireless charging transmitting coil, the wireless charging method including: prompting the mobile terminal when the charging efficiency of the terminal at the current position through the wireless charging transmitting coil is smaller than a preset efficiency threshold; 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 after the terminal moves through the initial position and an 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 of which the terminal charging efficiency is greater than or equal to a preset efficiency threshold; and the control terminal moves to a charging recommended position to perform wireless charging.
In an embodiment, determining the charging recommended position according to the initial position, the movement track and the end position includes: determining a first charging efficiency of the terminal at an initial position, a second charging efficiency of the terminal at a terminal position and a charging efficiency change distribution of the terminal on a moving track; determining a charging efficiency equivalent circle according to the initial position, the end position and the charging efficiency change distribution; and determining the circle center position of the equivalent circle of the charging efficiency as a charging recommended position.
In another embodiment, determining the charging efficiency equivalent circle from 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; according to the charging efficiency change distribution, respectively determining a maximum charging efficiency value and a minimum charging efficiency value at two sides of the connecting line segment; determining an inherent efficiency circle according to the initial position, the end position and the connecting line segment; and taking an intrinsic efficiency circle with the center of the circle at one side of which the charging efficiency minimum value is larger than the charging efficiency maximum value at the other side as a charging efficiency equivalent circle.
In yet another embodiment, when the first charging efficiency and the second charging efficiency are the same, the intrinsic efficiency circle is a circle whose center is located at different sides of 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 and the second charging efficiency are different, the inherent efficiency circle is the maximum circumscribed circle which passes through the initial position and is circumscribed with the efficiency-reducing circle, the center of the efficiency-reducing circle is the end position, and the radius is smaller than the length of the 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; and determining a movement track of the terminal based on the spatial component value and the rotation angular velocity value.
In an embodiment, the controlling the terminal to move to the charging recommended position for wireless charging includes: 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 wireless charging movement direction.
In an embodiment, before determining the charging recommended position according to the initial position, the movement track and the end position, the method further includes: and determining the second charging efficiency of the terminal 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 which is wirelessly charged 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 at 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 the moving track of the terminal and the termination position 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 of which the terminal charging efficiency is greater than or equal to a preset efficiency threshold value; 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 determining module is configured to determine the charging recommended position according to the initial position, the movement track, and the termination position in the following manner: determining a first charging efficiency of the terminal at an initial position, a second charging efficiency of the terminal at a terminal position and a charging efficiency change distribution of the terminal on a moving track; determining a charging efficiency equivalent circle according to the initial position, the end position and the charging efficiency change distribution; and determining the circle center position of the equivalent circle of the charging efficiency as a charging recommended position.
In another embodiment, the efficiency determination module is configured to determine a charging efficiency equivalent circle according to the initial position, the end 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; according to the charging efficiency change distribution, respectively determining a maximum charging efficiency value and a minimum charging efficiency value at two sides of the connecting line segment; determining an inherent efficiency circle according to the initial position, the end position and the connecting line segment; and taking an intrinsic efficiency circle with the center of the circle at one side of which the charging efficiency minimum value is larger than the charging efficiency maximum value at the other side as a charging efficiency equivalent circle.
In yet another embodiment, when the first charging efficiency and the second charging efficiency are the same, the intrinsic efficiency circle is a circle whose center is located at different sides of 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 and the second charging efficiency are different, the inherent efficiency circle is the maximum circumscribed circle which passes through the initial position and is circumscribed with the efficiency-reducing circle, the center of the efficiency-reducing circle is the end position, and the radius is smaller than the length of the connecting line segment between the initial position and the end position.
In one embodiment, the positioning module is configured to determine a movement 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; and determining a movement track of the terminal based on the spatial component value and the rotation angular velocity value.
In an embodiment, the control module 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 wireless charging movement direction.
In an embodiment, the efficiency determining module is further configured to determine that the second charging efficiency of the terminal for charging at the termination position is an effective charging efficiency.
According to still another aspect of the embodiments of the present disclosure, there is provided an electronic device including: a memory for storing 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 the disclosed embodiments, there is provided a non-transitory computer-readable storage medium comprising: the non-transitory computer readable storage medium stores computer executable instructions that, when executed by a processor, perform any of the wireless charging methods described above.
The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects: the charging recommended position is determined through the charging efficiency and the acceleration gyro sensor installed in the terminal, the determination of the charging recommended position can be realized without additional auxiliary devices, the hardware cost is reduced, the magnetic field interference of external devices 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 exemplary embodiment.
Fig. 2 is a diagram illustrating a coordinate position relationship according to an exemplary embodiment.
FIG. 3 is a process diagram illustrating a charge recommendation location determination, according to an example embodiment.
Fig. 4 is a graph showing a relationship between wireless charging efficiency and coil alignment position according to an exemplary embodiment.
Fig. 5 is a graph showing another wireless charging efficiency versus coil alignment position, according to an example embodiment.
Fig. 6 is a wireless charging efficiency profile, according to an example embodiment.
FIG. 7 is a process diagram illustrating another charge recommendation location determination, according to an example embodiment.
Fig. 8 is a wireless charging location resolution diagram according to an exemplary embodiment.
Fig. 9 is another wireless charging location resolution diagram, according to an example embodiment.
Fig. 10 is a flowchart illustrating a method of wireless charging operation, according to an exemplary embodiment.
Fig. 11 is a block diagram illustrating a wireless charging apparatus according to an exemplary embodiment.
Fig. 12 is a block diagram of an apparatus according to an example embodiment.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the invention. Rather, they are merely examples of apparatus and methods consistent with aspects of the invention as detailed in the accompanying claims.
Currently, in the related art, in order to determine the positions of a wireless charging transmitting coil and a wireless charging receiving coil during wireless charging, an auxiliary device is additionally arranged to detect the wireless charging position, so that the position relationship between the wireless charging receiving coil and the wireless charging transmitting coil in a terminal is confirmed, and the wireless charging efficiency is improved. However, in practical application, when the external auxiliary device detects the wireless charging position, the external auxiliary device is interfered by a 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 remove the interference to determine the wireless charging position, so that the cost is increased.
The embodiment of the disclosure provides a wireless charging method, which utilizes charging efficiency and an acceleration gyro sensor installed in a terminal to determine a charging recommended position, can realize the determination of the charging recommended position without additional auxiliary devices, reduces hardware cost, avoids magnetic field interference of external devices, and improves charging efficiency.
The terminal of the present disclosure may include: any one or more of a mobile phone, a bracelet, a tablet, etc. is not limited in this disclosure.
Fig. 1 is a flowchart illustrating a wireless charging method according to an exemplary embodiment, and 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 includes the following steps.
In step S11, when the charging efficiency of the terminal at 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 charging efficiency of a terminal may be installed in the terminal. The charging efficiency of the terminal at 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. On the one hand, when the charging efficiency of the terminal at the current position is smaller than the preset charging efficiency threshold, the user can be prompted to need to move the terminal through the terminal screen so as to move the terminal to a position where the charging efficiency reaches or is larger than the preset charging efficiency threshold. 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 value is 80% -90%, and when the charging efficiency of the terminal at the current position is detected to be 60%, a user is prompted to need the mobile terminal; when the charging efficiency of the terminal at the current position is detected to be 85%, wireless charging can be directly performed.
It will be appreciated that the present disclosure may prompt the user for a mobile terminal by voice prompts or interface prompts, etc. 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 taken as an initial position before the terminal moves, and the movement track of the terminal and the termination position after the terminal moves are determined through the initial position and the acceleration gyro sensor.
The acceleration gyro sensor and the terminal which are mainly used for map navigation, motion detection and the like in the terminal and the wireless charging receiving coil in the terminal are in fixed position relation, and then the positions of the terminal and the wireless charging receiving coil can be determined according to the acceleration gyro sensor in the present disclosure. Further, the positions of the wireless charging receiving coil and the wireless charging transmitting coil can be changed by moving the terminal provided with the wireless charging receiving coil. In an embodiment, the accelerometer-gyro sensor may be an integrated component in which the accelerometer sensor and the gyro sensor are integrated, or may be a component including the accelerometer sensor and the gyro sensor independent 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 the movement track of the terminal in the charging process. The gravity acceleration space component value of the terminal in the moving process is acquired through the acceleration gyro sensor, so that the movement state of the terminal is conveniently determined, the moving track of the terminal in the moving process is further determined by combining the rotation angle speed value acquired by the acceleration gyro sensor, and the moving track of the wireless charging receiving coil in the terminal is further acquired.
The position of the terminal is determined by utilizing the acceleration gyro sensor of the terminal, so that 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 charging recommended position is determined based on the initial position, the movement trajectory, and the end position.
In the present disclosure, the charging recommended position is a position where 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 may be 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 charging recommended position to perform wireless charging.
The user can move the terminal to the charging recommended position according to the interface prompt of the application software.
In an embodiment, a 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 perform wireless charging.
In the method, a guide route map similar to map navigation can be generated in a display interface, a 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 quickly and accurately move the terminal to the charging recommended position on the device with the wireless charging transmitting coil, charging efficiency is improved, and charging time is saved.
Through the embodiment, different positions of the wireless charging receiving coil in the moving process are obtained by utilizing 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, so that the hardware cost is saved, the terminal is not interfered by a magnetic field, and the charging efficiency is improved.
Fig. 3 illustrates a process diagram of charge recommendation location determination in an exemplary embodiment. Referring to fig. 3, in step S13, a charging recommended position is determined according to an initial position, a movement trajectory, and a termination position, and the following steps may be included.
In step S131, a first charging efficiency at which the terminal charges at the initial position, a second charging efficiency at which the terminal charges at the terminal position, and a charging efficiency variation distribution of the terminal on the movement trajectory are determined.
In this disclosure, a first charging efficiency at an initial position is determined based on a charge amount of a terminal at the initial position on a device including a wireless charging transmission coil. And determining the second charging efficiency of the terminal at the terminal position according to the charging amount of the terminal at the terminal position after the terminal moves on the device with the wireless charging transmitting coil, and recording the charging efficiency change distribution of the terminal on the moving track. And the charging recommended position is convenient to determine according to the charging efficiency change of the terminal in the moving process.
In an embodiment, in the process of moving the terminal, the moving path coordinates in the moving track and the charging efficiency corresponding to the moving path coordinates are obtained through sampling, so that the charging efficiency change distribution of the moving track is obtained, and meanwhile, the hardware calculation cost is saved.
In one embodiment, in step S13, before determining the charging recommended position according to the initial position, the movement track, and the end position, the method further includes: and determining the second charging efficiency of the terminal at the termination position as the effective charging efficiency.
The effective charging efficiency in this disclosure may be understood as a charging value greater than zero. In the present disclosure, before determining the charging recommended position, determining the second charging efficiency corresponding to the terminal when stopping moving is the effective charging efficiency. Control of continuing 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 positional 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 is, the higher the wireless charging efficiency is. 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 larger the vertical relative displacement between the wireless charging receiving coil and the wireless charging transmitting coil is, the lower the wireless charging efficiency is.
When the relative displacement of the coil center of the wireless charging receiving coil and the coil center of the wireless charging transmitting coil is consistent, the wireless charging efficiency distribution is distributed by taking the coil center as the center of a circle and concentric circles with different radiuses as shown in fig. 6. Concentric circles with the same radius have the same wireless charging efficiency, and each concentric circle is an inherent efficiency circle. The closer the relative position between the radius of the inherent efficiency circle and the center of the circle is, the higher the wireless charging efficiency is, and the faster the charging speed is; conversely, the farther the relative position between the radius and the center of the intrinsic efficiency circle is, the lower the wireless charging efficiency is, and the slower the charging speed is.
In the present invention, by acquiring the initial position and the end position, it is possible to determine whether the charging efficiency distribution of the position where the initial position and the end position are located is in the same intrinsic efficiency circle. From the obtained first charging efficiency and second charging efficiency, two intrinsic efficiency circles associated with the initial position and the end position can be obtained. According to the moving path coordinates of the moving track of the terminal and the charging efficiency change distribution, the unique inherent efficiency circle can be determined as the charging equivalent circle.
In step S133, the center position of the charging efficiency equivalent circle is determined as the charging recommended position.
In the present disclosure, the center position 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 at the center of the charging equivalent circle, at this time, the charging efficiency is highest, and the center position of the charging equivalent circle is the charging recommended position. The terminal is moved to the position where the charging efficiency of wireless charging is highest, and the terminal can be rapidly charged.
Through the embodiment, the characteristics of the inherent efficiency circles with different charging efficiency distributions are 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 rapidly reduced according to the charging efficiency of the initial position and the terminal 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 charge recommendation position determination in another exemplary embodiment. Referring to fig. 7, in step S132, determining a charging efficiency equivalent circle according to the initial position, the end position, and the charging efficiency variation distribution may include the following steps.
In step S1321, the connection initial position and the termination position obtain a connection line segment.
In the present disclosure, the initial position and the end position are connected to obtain a connection line segment. And the connection line segment is taken as the center, so that the distribution condition of the charging efficiency value of the moving track at the two ends of the line segment is determined when the terminal is moving, and the distance of the displacement between the position of the terminal when the terminal is moving and the charging recommended position is conveniently determined.
In step S1322, a maximum charging efficiency value and a minimum charging efficiency value on both sides of the connecting line segment are respectively determined according to the charging efficiency variation distribution.
In the present disclosure, according to the distribution situation 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. And comparing the obtained maximum charging efficiency value at one side of the line segment with the obtained minimum charging efficiency value at the other side, so as to conveniently determine which side of the two ends of the line segment the charging recommended position of the wireless charging transmitting coil is.
In step S1323, an intrinsic efficiency circle is determined from the initial position, the end position, and the connecting line segment.
According to the initial position, the end position, the corresponding first charging efficiency and second charging efficiency and charging efficiency values distributed on two sides of the connecting line segment, the positions of two inherent efficiency circles can be obtained rapidly, wherein the center position of each inherent efficiency circle is the charging recommended position with the highest probability.
In step S1324, an intrinsic efficiency circle whose center is located at one side where the charging efficiency minimum value is greater than the charging efficiency maximum value at the other side is taken as a charging efficiency equivalent circle.
And comparing the maximum charging efficiency value at one side of the line segment with the minimum charging efficiency value at the other side, and determining the coil center direction of the terminal closest to the wireless charging transmitting coil in the moving process. According to the two inherent efficiency circles obtained in the steps and the coil center direction closest to the wireless charging transmitting coil, the unique inherent efficiency circle is determined to be an accurate charging efficiency equivalent circle, and 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 positions of the charging equivalent circles can be rapidly positioned according to the distribution of the charging efficiency change distribution on the two sides of the line segment between the initial position and the terminal position, the central position of the wireless charging transmitting coil is determined, and after the terminal stops moving, accurate moving directions can be rapidly provided for a user, so that rapid charging is facilitated.
In an embodiment, when the first charging efficiency and the second charging efficiency are the same, the intrinsic efficiency circle is a circle with a center on different sides of the connecting line segment and a circular arc passing through the initial position and the end position at the same time; when the first charging efficiency and the second charging efficiency are different, the inherent efficiency circle is the maximum circumscribed circle which passes through the initial position and is circumscribed with the efficiency-reducing circle, the center of the efficiency-reducing circle is the end position, and the radius is smaller than the length of the connecting line segment between the initial position and the end position.
Referring to fig. 8, if the first charging efficiency is the same as the second charging efficiency, the charging efficiencies of the initial position 4 and the final position 5 of the terminal are the same, and belong to two points on the same intrinsic efficiency circle, whereby two intrinsic efficiency circles can be obtained. According to the charging efficiency change of the terminal moving track 6, a unique correct inherent efficiency circle can be obtained, and the circle center position is the charging recommended position. As shown in fig. 8, the circle with the center marked by the five-pointed star is the correct inherent efficiency circle.
Referring to fig. 9, when the first charging efficiency is different from the second charging efficiency, the charging efficiencies at the initial position 4 and the final position 5 of the terminal are different from each other, and do not belong to two points on the same intrinsic efficiency circle. At this time, the efficiency-decreasing circle with the end position 5 as the center and with the radius smaller than the length of the connecting line segment between the initial position and the end position is made, which means that the coil center of the wireless charging transmitting coil is all possible positions tangential to the inherent efficiency circle with the initial position on the circle. The inherent efficiency circle is the maximum circumscribed circle circumscribed by the initial position 4 and the efficiency drop circle, and the circle center position of the generated inherent efficiency circle is the maximum probability of the recommended charging position. According to the charging efficiency change of the terminal moving track 6, a unique correct inherent efficiency circle can be obtained, and the circle center position is the charging recommended position. As shown in fig. 9, the circle with the center marked by the five-pointed star is the correct inherent efficiency circle.
The wireless charging method according to the embodiment of the present disclosure will be described below in practical application.
Fig. 10 is a flowchart illustrating a method of wireless charging operation, according to an exemplary embodiment. Referring to fig. 10, a wireless charging method operational flow 20 may include the following steps.
In step S21, the user places the mobile phone in a non-charged state.
In the present disclosure, the user places the handset on the wireless charger, at which point the handset is in a non-charged state.
In step S22, the mobile phone detects wireless charging.
In the present disclosure, the undetected wireless charging state may be performed by application software installed on a mobile phone. The application software detects whether the mobile phone is currently charged wirelessly. 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 in wireless charging, judging whether the charging efficiency of the current wireless charging reaches the optimal charging efficiency or not according to the charging amount received by the mobile phone, namely whether the charging efficiency reaches a preset charging efficiency threshold.
When the detected charging efficiency is greater than or equal to the optimal charging efficiency, step S29 may be performed.
When the detected charging efficiency is smaller than the optimal charging efficiency, step S24 is performed.
In step S24, the current charging efficiency and the initialization a+g (accelerometer and gyroscope) are recorded.
In the disclosure, when the detected charging efficiency is smaller than the optimal charging efficiency, the coordinates of the current position of the mobile phone are recorded, the position is the initial position, and 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 a wireless charging transmitting coil in a wireless charger, firstly, initializing A+G in the mobile phone to obtain the position coordinate of a acceleration gyro sensor in the mobile phone at the moment, and further obtaining the position coordinate of a wireless charging receiving coil. By initializing A+G, the mobile phone mobile path coordinate and the mobile phone mobile position coordinate stopping method are favorable for quickly acquiring the mobile phone mobile path coordinate and the mobile phone mobile position coordinate stopping method, and the cost of acquiring the mobile coordinate by hardware is reduced.
In step S25, the user is prompted to randomly move the mobile phone a distance in the signal transmitting area of the wireless charger.
In the present disclosure, a user is prompted to move a mobile phone any distance within a signal transmitting area of a wireless charger through a display interface. In the method, the mobile phone moves in the signal transmitting area of the wireless charger, so that the wireless charging recommended position of the wireless charger can be determined according to the wireless charging method related to the method.
In step S26, it is determined whether the charging efficiency is effective 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 or not, namely confirming whether the efficiency point is larger than zero when the mobile phone stops moving. When the charging efficiency point of the mobile phone is greater than zero, the second charging efficiency is the effective charging efficiency. When the charging efficiency point of the mobile phone is smaller than zero, the second charging efficiency is invalid charging efficiency. In one embodiment, when the second charging efficiency is the invalid charging efficiency, the mobile phone still needs to continue to perform wireless charging, but the current termination position of the mobile phone is beyond the signal transmission area of the wireless charger, and at this time, the user can be prompted to place the mobile phone on the wireless charger again.
In step S27, the current charging efficiency of the mobile phone is recorded and the movement path is stored.
In the method, the coordinates of the termination position 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 conveniently determined.
In step S28, the coil center relative position is determined, and the charging recommended position is obtained.
In the present disclosure, according to the initial position, the end position, the movement path, the first charging efficiency, the second charging efficiency and the charging efficiency variation distribution of the mobile phone, the center relative position of the wireless charging receiving coil and the wireless charging transmitting coil in the mobile phone can be determined, so as to determine the charging recommended position of the wireless charger for wireless charging.
In step S29, the charging recommended position is displayed on the display interface (UI interface) of the mobile phone.
In the present disclosure, according to the determined charging recommended position, the mobile phone may be prompted to move to the charging recommended position by displaying through the UI interface.
It can be understood that if the charging efficiency of the terminal is the highest at this time, the user terminal can be directly prompted to be at the charging recommended position at present, and no movement is required.
In step S210, the user is prompted to move the bearing at the UI interface.
According to the mobile phone mobile terminal and the charging recommendation position, the user is prompted to move the mobile phone mobile direction through the UI interface according to the mobile phone stop position and the charging recommendation position, so that the user can accurately move the mobile phone to the charging recommendation position, and rapid wireless charging is facilitated.
Through the embodiment, the application software is utilized to detect the wireless charging state of the terminal, so that the charging efficiency of the wireless charging of the user terminal can be clearly prompted, and the charging recommendation position is clearly displayed to move the terminal to the charging recommendation position for charging, so that the rapid wireless charging is performed.
Based on the same inventive concept, embodiments of the present disclosure provide a wireless charging device.
Fig. 11 is a block diagram of 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 installed and which is wirelessly charged through a wireless charging transmitting coil, the wireless charging apparatus 100 comprising: the system comprises a prompt module 110, a positioning 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 at the current position through the wireless charging transmitting coil is less than a preset efficiency threshold.
And the positioning module 120 is configured to take the current position as an initial position before the terminal moves after the terminal moves, and determine a movement track of the terminal and a termination position after the terminal moves through the initial position and the acceleration gyro sensor.
The efficiency determining module 130 is configured to determine a charging recommended position according to the initial position, the movement track, and the end position, where the charging recommended position is a position where the charging efficiency of the terminal is greater than or equal to a preset efficiency threshold.
And the control module 140 is used for controlling the terminal to move to the charging recommended position for wireless charging.
In one embodiment, the efficiency determining module 130 is configured to determine the charging recommended 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 at an initial position, a second charging efficiency of the terminal at a terminal position and a charging efficiency change distribution of the terminal on a moving track; determining a charging efficiency equivalent circle according to the initial position, the end position and the charging efficiency change distribution; and determining the circle center position of the equivalent circle of the charging efficiency as a charging recommended position.
In another embodiment, the efficiency determination module 130 is configured to determine a charging efficiency equivalent circle according to the initial position, the end 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; according to the charging efficiency change distribution, respectively determining a maximum charging efficiency value and a minimum charging efficiency value at two sides of the connecting line segment; determining an inherent efficiency circle according to the initial position, the end position and the connecting line segment; and taking an intrinsic efficiency circle with the center of the circle at one side of which the charging efficiency minimum value is larger than the charging efficiency maximum value at the other side as a charging efficiency equivalent circle.
In yet another embodiment, when the first charging efficiency and the second charging efficiency are the same, the intrinsic efficiency circle is a circle whose center is located at different sides of 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 and the second charging efficiency are different, the inherent efficiency circle is the maximum circumscribed circle which passes through the initial position and is circumscribed with the efficiency-reducing circle, the center of the efficiency-reducing circle is the end position, and the radius is smaller than the length of the connecting line segment between the initial position and the end position.
In one embodiment, the positioning module 120 is configured to determine a movement 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; and determining a movement track of the terminal based on the spatial component value and the rotation angular velocity value.
In an embodiment, the control module 140 is configured to control the terminal to move to the charging recommended 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 wireless charging movement direction.
In an embodiment, the efficiency determining module 140 is further configured to determine that the second charging efficiency of the terminal for charging at the termination position is an effective charging efficiency.
The specific manner in which the various modules perform the operations in the apparatus of the above embodiments have been described in detail in connection with the embodiments of the method, and will not be described in detail herein.
Fig. 12 is a block diagram illustrating an apparatus 200 for wireless charging according to an example embodiment. For example, apparatus 200 may be a mobile phone, computer, digital broadcast terminal, messaging device, game console, tablet device, medical device, exercise device, personal digital assistant, or 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 apparatus 200, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 202 may include one or more processors 220 to execute instructions to perform all or part of the steps of the methods described above. Further, the processing component 202 can include one or more modules that facilitate interactions between the processing component 202 and other components. For example, the processing component 202 may include a multimedia module to facilitate interaction between the multimedia component 208 and the processing component 202.
The memory 204 is configured to store various types of data to support operations at the device 200. Examples of such data include instructions for any application or method operating on the device 200, contact data, phonebook data, messages, pictures, videos, and the like. The memory 204 may be implemented by any type or combination of volatile or nonvolatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.
The power component 206 provides power to the various components of the device 200. The power components 206 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the device 200.
The multimedia component 208 includes a screen between the device 200 and the user that provides an output interface. 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 input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may sense not only the boundary of a touch or slide action, but also 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 operational mode, such as a photographing mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.
The audio component 210 is configured to output and/or input audio signals. For example, the audio component 210 includes a Microphone (MIC) configured to receive external audio signals when the device 200 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may be further stored in the memory 204 or transmitted via the communication component 216. In some embodiments, audio component 210 further includes a speaker for outputting audio signals.
The I/O interface 212 provides an interface between the processing assembly 202 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: homepage button, volume button, start button, and lock button.
The sensor assembly 214 includes one or more sensors for providing status assessment of various aspects of the apparatus 200. For example, the sensor assembly 214 may detect the on/off state of the appliance 200, the relative positioning of the components, such as the display and keypad of the device 200, the sensor assembly 214 may also detect a change in position of the device 200 or a component of the device 200, the presence or absence of user contact with the device 200, the orientation or acceleration/deceleration of the device 200, and a change in temperature of the device 200. The sensor assembly 214 may include a proximity sensor configured to detect the presence of nearby objects in the absence of 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 gyroscopic sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 216 is configured to facilitate communication between the apparatus 200 and other devices in a wired or wireless manner. The device 200 may access a wireless network based on a communication standard, such as WiFi,2G or 3G, or a combination thereof. In one exemplary embodiment, the communication component 216 receives broadcast signals 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, microcontrollers, microprocessors, or other electronic elements for executing the methods described above.
In an exemplary embodiment, a non-transitory computer readable storage medium is also provided, such as memory 204, including instructions executable by processor 220 of apparatus 200 to perform the above-described method. For example, the non-transitory computer readable storage medium may be ROM, random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.
A non-transitory computer readable storage medium, which when executed by a processor of a mobile terminal, causes the mobile terminal to perform the wireless charging method described above.
Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the application pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It is to be understood that the invention is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (12)
1. A wireless charging method, characterized by being applied to a terminal in which an acceleration gyro sensor is installed and which performs wireless charging through a wireless charging transmitting coil, the wireless charging method comprising:
prompting to move the terminal when the charging efficiency of the terminal at the current position through the wireless charging transmitting coil is smaller than a preset efficiency threshold;
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 after the terminal moves through the initial position and the acceleration gyro sensor;
determining a charging recommended position according to the initial position, the movement track and the termination position, wherein the charging recommended position is a position where the charging efficiency of the terminal is greater than or equal to the preset efficiency threshold, and the charging recommended position comprises: 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;
controlling the terminal to move to the charging recommended position for wireless charging;
determining the moving track of the terminal through the initial position and the acceleration gyro sensor comprises the following steps:
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 track of the terminal based on the spatial component value and the rotational angular velocity value, wherein the gravitational acceleration spatial component value is used for determining a movement state of the terminal, and the rotational angular velocity value is used for determining the movement track of the terminal in a movement process;
and determining a charging recommended position according to the initial position, the movement track and the termination position, including:
Determining a first charging efficiency of the terminal at the initial position, a second charging efficiency of the terminal at the terminal position and a charging efficiency change distribution of the terminal on the moving track;
Determining a charging efficiency equivalent circle according to the initial position, the end position and the charging efficiency change distribution;
and determining the circle center position of the charging efficiency equivalent circle as a charging recommended position.
2. The wireless charging method according to claim 1, 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;
according to the charging efficiency change distribution, respectively determining a maximum charging efficiency value and a minimum charging efficiency value at two sides of the connecting line segment;
Determining an inherent efficiency circle according to the initial position, the end position and the connecting line segment;
And taking an intrinsic efficiency circle with the center of the circle being positioned on one side of which the charging efficiency minimum value is larger than the charging efficiency maximum value on the other side as the charging efficiency equivalent circle.
3. The wireless charging method of claim 2, wherein,
When the first charging efficiency is the same as the second charging efficiency, the inherent efficiency circle is a circle with a circle center positioned at different sides of the connecting line segment and a circular arc passing through the initial position and the end position at the same time;
when the first charging efficiency and the second charging efficiency are different, the inherent efficiency circle is a maximum circumscribed circle passing through the initial position and circumscribed with the efficiency-reducing circle, and the center of the efficiency-reducing circle is the end position, and the radius is smaller than the length of a connecting line segment between the initial position and the end position.
4. The wireless charging method according to 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 movement direction.
5. The wireless charging method of claim 1, wherein prior to determining a charging recommended location based on the initial location, the movement trajectory, and the termination location, the method further comprises:
and determining the second charging efficiency of the terminal for charging at the termination position as effective charging efficiency.
6. A wireless charging device, characterized in that it is applied to a terminal in which an acceleration gyro sensor is installed and which is wirelessly charged through a wireless charging transmission coil, the wireless charging device comprising:
The prompting module is used for prompting the terminal to move when the charging efficiency of the terminal at 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 a termination position after the terminal moves through the initial position and the acceleration gyro sensor;
The efficiency judging module is configured to determine a charging recommended position according to the initial position, the movement track and the termination position, where the charging recommended position is a position where the charging efficiency of the terminal is greater than or equal to the preset efficiency threshold, and the charging recommended position includes: 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;
The control module is used for controlling the terminal to move to the charging recommended position to perform wireless charging;
the positioning module is used for determining the moving track of the terminal through the initial position and the acceleration gyro sensor in the following mode:
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, wherein the gravity acceleration space component value is used for determining the movement state of the terminal, and the rotation angular velocity value is used for determining the moving track of the terminal in the moving process;
determining a movement track of the terminal based on the spatial component value and the rotational angular velocity value;
The efficiency judging module is used for determining a charging recommended position according to the initial position, the moving track and the termination position in the following manner:
Determining a first charging efficiency of the terminal at the initial position, a second charging efficiency of the terminal at the terminal position and a charging efficiency change distribution of the terminal on the moving track;
Determining a charging efficiency equivalent circle according to the initial position, the end position and the charging efficiency change distribution;
and determining the circle center position of the charging efficiency equivalent circle as a charging recommended position.
7. The wireless charging device of claim 6, wherein the efficiency determination module is configured to determine a charging efficiency equivalent circle from the initial position, the final position, and the charging efficiency variation distribution by:
Connecting the initial position and the termination position to obtain a connecting line segment;
according to the charging efficiency change distribution, respectively determining a maximum charging efficiency value and a minimum charging efficiency value at two sides of the connecting line segment;
Determining an inherent efficiency circle according to the initial position, the end position and the connecting line segment;
And taking an intrinsic efficiency circle with the center of the circle being positioned on one side of which the charging efficiency minimum value is larger than the charging efficiency maximum value on the other side as the charging efficiency equivalent circle.
8. The wireless charging apparatus of claim 7, wherein the wireless charging apparatus comprises,
When the first charging efficiency is the same as the second charging efficiency, the inherent efficiency circle is a circle with a circle center positioned at different sides of the connecting line segment and a circular arc passing through the initial position and the end position at the same time;
when the first charging efficiency and the second charging efficiency are different, the inherent efficiency circle is a maximum circumscribed circle passing through the initial position and circumscribed with the efficiency-reducing circle, and the center of the efficiency-reducing circle is the end position, and the radius is smaller than the length of a connecting line segment between the initial position and the end position.
9. The wireless charging device of claim 6, wherein the control module is configured to control the terminal to move to the charging recommended location for wireless charging by:
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 movement direction.
10. The wireless charging device of claim 6, wherein the efficiency determination module is further configured to:
And before determining a charging recommended position according to the initial position, the moving track and the termination position, determining the second charging efficiency of the terminal at the termination position as effective charging efficiency.
11. An electronic device, wherein the electronic device comprises:
A memory for storing instructions; and
A processor for invoking the instructions stored in the memory to perform the wireless charging method of any one of claims 1-5.
12. A non-transitory computer-readable storage medium storing computer-executable instructions which, when executed by a processor, perform the wireless charging method of any one of claims 1-5.
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| CN109755976B (en) * | 2017-11-03 | 2020-09-18 | 北京小米移动软件有限公司 | Wireless charging method, device and storage medium |
| CN108233465B (en) * | 2017-12-19 | 2021-09-07 | 努比亚技术有限公司 | Wireless charging control method, flexible terminal and computer readable storage medium |
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