CN110943553B - Wireless charging method, device, equipment and storage medium - Google Patents
Wireless charging method, device, equipment and storage medium Download PDFInfo
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- CN110943553B CN110943553B CN201811097583.9A CN201811097583A CN110943553B CN 110943553 B CN110943553 B CN 110943553B CN 201811097583 A CN201811097583 A CN 201811097583A CN 110943553 B CN110943553 B CN 110943553B
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000003860 storage Methods 0.000 title claims abstract description 10
- 238000013507 mapping Methods 0.000 claims abstract description 75
- 230000004907 flux Effects 0.000 claims description 9
- 230000006698 induction Effects 0.000 description 14
- 238000010586 diagram Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000012938 design process Methods 0.000 description 3
- 230000005672 electromagnetic field Effects 0.000 description 3
- 230000005674 electromagnetic induction Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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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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- 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
- H02J5/00—Circuit arrangements for transfer of electric power between ac networks and dc networks
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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
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
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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
- H02J50/70—Circuit arrangements or systems for wireless supply or distribution of electric power involving the reduction of electric, magnetic or electromagnetic leakage fields
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Telephone Function (AREA)
Abstract
The invention discloses a wireless charging method, a device, equipment and a storage medium, and relates to the technical field of mobile terminals, wherein the method comprises the following steps: when the mobile terminal detects that the mobile terminal is placed on a wireless charging tray to perform wireless charging, acquiring the magnetic field intensity in the current wireless charging; the mobile terminal inquires whether the optimal placement position corresponding to the magnetic field intensity is stored in a preset mapping table according to the magnetic field intensity; when the optimal placement position corresponding to the magnetic field strength is not stored in the preset mapping table, the mobile terminal generates an alarm instruction for prompting a user to adjust the placement position, and sends out an alarm prompt according to the alarm instruction.
Description
Technical Field
The present invention relates to the field of mobile terminals, and in particular, to a method, an apparatus, a device, and a storage medium for wireless charging.
Background
When a terminal with a wireless charging function is charged, the terminal is required to be placed on a wireless charging tray. At present, an electromagnetic induction technology is generally adopted for wireless charging, a wireless charging tray is used as an energy transmitting end, a terminal is used as an energy receiving end, the wireless charging tray and the terminal are both provided with coils, and the materials and the sizes of the coils are limited by cost and space. Certain efficiency conversion exists in the energy transfer process, and when the coil materials and the size are unchanged, the relative positions of the two coils determine the electromagnetic induction efficiency to a great extent, namely the wireless charging efficiency. In the background art, when calculating the wireless charging efficiency, the output power of the wireless charging chip at the terminal side and the input power of the wireless charging tray need to be obtained respectively, and the input power usually needs to be obtained by two wireless charging chips capable of communicating. If the protocols or keys between the terminal and the tray do not match, it is computationally inefficient and therefore it is also impossible to determine whether the terminal is in the optimal charging position.
Disclosure of Invention
The technical problem solved by the scheme provided by the embodiment of the invention is that the transmitting power (output voltage and current) of the wireless charging tray cannot be obtained under the condition that communication between the terminal and the wireless charging tray cannot be carried out, so that efficiency calculation cannot be carried out, and whether the optimal position is used for efficient charging cannot be determined.
The wireless charging method provided by the embodiment of the invention comprises the following steps:
when the mobile terminal detects that the mobile terminal is placed on a wireless charging tray to perform wireless charging, acquiring the magnetic field intensity in the current wireless charging;
the mobile terminal inquires whether the optimal placement position corresponding to the magnetic field intensity is stored in a preset mapping table according to the magnetic field intensity;
when the optimal placement position corresponding to the magnetic field strength is not stored in the preset mapping table, the mobile terminal generates an alarm instruction for prompting a user to adjust the placement position, and sends out an alarm prompt according to the alarm instruction.
In one embodiment, the method further comprises the operation step of creating and saving the mapping table, which comprises:
the mobile terminal obtains charging efficiency of a plurality of placement positions by using a geomagnetic sensor, and obtains an optimal placement position range according to the charging efficiency of each placement position;
the mobile terminal obtains the magnetic field intensity of a plurality of optimal placement positions according to the optimal placement position range;
and the mobile terminal establishes and stores a mapping table containing the corresponding relation between the optimal placement position and the magnetic field intensity by binding each optimal placement position and the corresponding magnetic field intensity.
In one embodiment, the mobile terminal obtaining the optimal placement location range according to the charging efficiency of each placement location includes:
the mobile terminal respectively obtains magnetic induction intensities placed at M positions by using a geomagnetic sensor, and obtains M charging efficiencies according to the M magnetic induction intensities;
the mobile terminal obtains N optimal charging efficiencies by comparing the M charging efficiencies with preset charging efficiencies respectively;
the mobile terminal obtains an optimal placement position range according to the N optimal charging efficiencies;
the magnetic induction intensity refers to the magnetic induction intensity of the mobile terminal and the wireless charging tray in the vertical direction; m and N are positive integers, M > N. In one embodiment, the mobile terminal querying whether the optimal placement position corresponding to the magnetic field strength is stored in a preset mapping table according to the magnetic field strength includes:
the mobile terminal inquires whether the magnetic field intensity is stored in a preset mapping table according to the magnetic field intensity;
if the magnetic field intensity is not stored in the preset mapping table, the mobile terminal determines that the optimal placement position corresponding to the magnetic field intensity is not stored in the preset mapping table;
and if the magnetic field intensity is stored in the preset mapping table, the mobile terminal determines that the optimal placement position corresponding to the magnetic field intensity is stored in the preset mapping table.
In one embodiment, the method further comprises:
and when the optimal placement position corresponding to the magnetic field strength is determined to be stored in the preset mapping table, the mobile terminal performs wireless charging.
According to an embodiment of the present invention, a wireless charging device includes:
the acquisition module is used for acquiring the magnetic field intensity when the wireless charging is carried out when the wireless charging tray is placed on the wireless charging tray for wireless charging;
the inquiring module is used for inquiring whether the optimal placement position corresponding to the magnetic field intensity is stored in a preset mapping table according to the magnetic field intensity;
and the alarm module is used for generating an alarm instruction for prompting a user to adjust the placement position when the optimal placement position corresponding to the magnetic field strength is not stored in the preset mapping table, and sending an alarm prompt according to the alarm instruction.
In one embodiment, the apparatus further includes a mapping table building module, which specifically includes:
an obtaining unit, configured to obtain an optimal placement position range according to charging efficiency of each placement position, and obtain magnetic field intensities of a plurality of optimal placement positions according to the optimal placement position range;
and the mapping table establishing unit is used for establishing and storing a mapping table containing the corresponding relation between the optimal placement position and the magnetic field strength by binding each optimal placement position and the corresponding magnetic field strength.
In one embodiment, the query module is specifically configured to query, from a preset mapping table, whether the magnetic field strength is stored according to the magnetic field strength, and determine that an optimal placement position corresponding to the magnetic field strength is not stored in the preset mapping table when the magnetic field strength is not stored in the preset mapping table, and determine that an optimal placement position corresponding to the magnetic field strength is stored in the preset mapping table when the magnetic field strength is stored in the preset mapping table.
According to an embodiment of the present invention, there is provided a wireless charging device, including: a processor, and a memory coupled to the processor; the memory stores a wireless charging program capable of running on the processor, and the wireless charging program realizes the steps of the wireless charging method provided by the embodiment of the invention when being executed by the processor.
According to the computer storage medium provided by the embodiment of the invention, the storage medium stores a wireless charging program, and the wireless charging program realizes the steps of the wireless charging method provided by the embodiment of the invention when being executed by a processor.
According to the scheme provided by the embodiment of the invention, the geomagnetic sensor of the terminal is used for detecting whether the placement position of the terminal is the optimal charging position, so that the user experience is improved, the charging efficiency is improved, and the charging heating is reduced.
Drawings
Fig. 1 is a flowchart of a method for wireless charging according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a wireless charging device according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of wireless charging at different relative positions according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention;
fig. 5 is a flowchart of a method for wireless charging according to an embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the invention is provided in connection with the accompanying drawings, and it is to be understood that the embodiments described below are merely illustrative and explanatory of the invention, and are not restrictive of the invention.
Fig. 1 is a flowchart of a method for wireless charging according to an embodiment of the present invention, as shown in fig. 1, including:
step S101: when the mobile terminal detects that the mobile terminal is placed on a wireless charging tray to perform wireless charging, acquiring the magnetic field intensity in the current wireless charging;
step S102: the mobile terminal inquires whether the optimal placement position corresponding to the magnetic field intensity is stored in a preset mapping table according to the magnetic field intensity;
step S103: when the optimal placement position corresponding to the magnetic field strength is not stored in the preset mapping table, the mobile terminal generates an alarm instruction for prompting a user to adjust the placement position, and sends out an alarm prompt according to the alarm instruction.
In one embodiment, the method may further include an operation step of creating and storing the mapping table, which specifically includes: the mobile terminal obtains charging efficiency of a plurality of placement positions by using a geomagnetic sensor, and obtains an optimal placement position range according to the charging efficiency of each placement position; the mobile terminal obtains the magnetic field intensity of a plurality of optimal placement positions according to the optimal placement position range; and the mobile terminal establishes and stores a mapping table containing the corresponding relation between the optimal placement position and the magnetic field intensity by binding each optimal placement position and the corresponding magnetic field intensity.
In an embodiment, the mobile terminal obtains charging efficiencies of a plurality of placement positions by using a geomagnetic sensor, and according to the charging efficiency of each placement position, obtaining the optimal placement position range includes: the mobile terminal respectively obtains magnetic induction intensities placed at M positions by using a geomagnetic sensor, and obtains M charging efficiencies according to the M magnetic induction intensities; the mobile terminal obtains N optimal charging efficiencies by comparing the M charging efficiencies with preset charging efficiencies respectively; the mobile terminal obtains an optimal placement position range according to the N optimal charging efficiencies; the magnetic induction intensity refers to the magnetic induction intensity of the mobile terminal and the wireless charging tray in the vertical direction; m and N are positive integers, M > N.
In an embodiment, the mobile terminal querying whether the optimal placement position corresponding to the magnetic field strength is stored in a preset mapping table according to the magnetic field strength includes: the mobile terminal inquires whether the magnetic field intensity is stored in a preset mapping table according to the magnetic field intensity; if the magnetic field intensity is not stored in the preset mapping table, the mobile terminal determines that the optimal placement position corresponding to the magnetic field intensity is not stored in the preset mapping table; and if the magnetic field intensity is stored in the preset mapping table, the mobile terminal determines that the optimal placement position corresponding to the magnetic field intensity is stored in the preset mapping table.
In an embodiment, the method may further comprise: and when the optimal placement position corresponding to the magnetic field strength is determined to be stored in the preset mapping table, the mobile terminal performs wireless charging.
Fig. 2 is a schematic diagram of a wireless charging device according to an embodiment of the present invention, as shown in fig. 2, including: an acquisition module 201, a query module 202 and an alarm module 203.
The acquiring module 201 is configured to acquire a magnetic field strength when the wireless charging is performed when the wireless charging is detected to be placed on the wireless charging tray; the query module 202 is configured to query whether an optimal placement position corresponding to the magnetic field strength is stored in a preset mapping table according to the magnetic field strength; the alarm module 203 is configured to generate an alarm instruction for prompting a user to adjust a placement position when the optimal placement position corresponding to the magnetic field strength is not stored in the preset mapping table, and send an alarm prompt according to the alarm instruction.
In an embodiment, the apparatus may further include a mapping table building module, which specifically includes: an acquisition unit configured to acquire charging efficiencies of a plurality of placement positions using a geomagnetic sensor, acquire an optimal placement position range according to the charging efficiency of each placement position, and acquire magnetic field strengths of the plurality of optimal placement positions according to the optimal placement position range; and the mapping table establishing unit is used for establishing and storing a mapping table containing the corresponding relation between the optimal placement position and the magnetic field strength by binding each optimal placement position and the corresponding magnetic field strength.
In an embodiment, the query module 202 is specifically configured to query from a preset mapping table whether the magnetic field strength is stored according to the magnetic field strength, determine that an optimal placement position corresponding to the magnetic field strength is not stored in the preset mapping table when the magnetic field strength is not stored in the preset mapping table, and determine that an optimal placement position corresponding to the magnetic field strength is stored in the preset mapping table when the magnetic field strength is stored in the preset mapping table.
According to an embodiment of the present invention, there is provided a wireless charging device, including: a processor, and a memory coupled to the processor; the memory stores a wireless charging program capable of running on the processor, and the wireless charging program realizes the steps of the wireless charging method provided by the embodiment of the invention when being executed by the processor.
According to the computer storage medium provided by the embodiment of the invention, the storage medium stores a wireless charging program, and the wireless charging program realizes the steps of the wireless charging method provided by the embodiment of the invention when being executed by a processor.
The terminal of the embodiment of the invention supports the geomagnetic sensor and stores the mapping table, and whether the position of the terminal placed on the wireless charging tray is optimal or not is determined by presetting the mapping table. The mapping table refers to the relation between the position of the terminal (mobile terminal) placed on the tray and the sampled magnetic field intensity of the geomagnetic sensor.
The embodiment of the invention comprises a hardware environment and a software environment, wherein the hardware environment is as follows: terminals having components/chips other than those provided in conventional terminals (e.g., main chip, power management chip, battery, display screen, touch screen, etc.), must have a wireless charging chip, geomagnetic sensor.
Software environment: when the terminal is in wireless charging, the geomagnetic sensor on the terminal can be influenced by a magnetic field generated by the wireless charging, and the wireless charging technology of the terminal adopts an electromagnetic induction mode. When the positions of the terminals are different, the strength of the magnetic field changes. In the product design and production process, the corresponding relation between each wireless charging position and field intensity is recorded and a set of mapping table is formed. When the user uses wireless charging, the user can reversely search whether the wireless charging position is the optimal position according to the current magnetic field intensity, and then know whether the wireless charging position is the optimal efficiency area.
In the design and manufacturing process, a wireless charging test is firstly performed, and the test comprises the following links:
1. selecting different relative positions for wireless charging (shown in fig. 4, for example, position A, B, C)
2. The wireless charging efficiency of each position and the data of the geomagnetic sensor (the following tables 1, 2 and 3 correspond to the a/B/C positions of fig. 4 respectively) are recorded, and it is obvious that the influence degree of the wireless charging of the current position on the geomagnetic sensor can be distinguished from the data of the Z axis.
Table 1: magnetic induction intensity meter at A position
Table 2: magnetic induction intensity meter at B position
Table 3: magnetic induction intensity meter at C position
3. Integrating this data into a mapping table into software
The placement position of the geomagnetic sensor on the terminal and the selected specification model have influence on the data in step 2, but the trend is consistent, and the influence of different wireless charging positions on the geomagnetic sensor can be shown through the data.
In this example, we can integrate the efficiency and location relationship of wireless charging into the software version as follows: epsilon=f (T)
Epsilon: indicating wireless charging efficiency
T: the magnetic induction intensity (magnetic induction intensity on the Z axis of a geomagnetic sensor in accordance with the magnetic flux direction generated by wireless charging, -13uT, -22uT, -36uT respectively.)
The geomagnetic sensor on the terminal can feed back different data to the main chip due to the change of the external magnetic field intensity. When the terminal is wirelessly charged, an electromagnetic field is generated between the coil of the wireless charging tray and the coil of the receiving end of the terminal (the generation reason of the electromagnetic field is irrelevant to whether the method is used or not, and the generation reason of the electromagnetic field is irrelevant to whether a geomagnetic sensor of the terminal exists or not). The geomagnetic sensors currently used in terminals are mostly triaxial sensors (x, y, z axes), and usually such sensors have an axis perpendicular to the display screen of the terminal when the terminal (welding, bonding) is produced, in other words, an axis direction which coincides with the direction of the magnetic flux passing through the coil. The sampled data of this axis of the geomagnetic sensor becomes very sensitive due to the occurrence of wireless charging. As shown in fig. 3, because of the different relative positions (terminal and charging tray) the coil alignment changes, which changes the magnetic flux on that axis through the geomagnetic sensor.
If the magnetic fluxes of the terminal and the wireless charging tray at different relative positions are recorded in advance in the terminal software design process, a mapping relation (position-magnetic flux) can be obtained.
This side relates to a formula: phi=bs
B: representing the magnetic induction intensity;
s: representing the area perpendicular to the direction of the magnetic lines;
Φ: representing the magnetic flux passing through the S area.
The S area described herein changes due to a change in the relative position. This area is greatest when the two coils are aligned, whereas S becomes smaller due to the terminal sway (because the intersection area of the two coils becomes smaller). Meanwhile, since the terminal design/manufacturing party can know in advance which area is placed for wireless charging with highest efficiency, there is another mapping relationship (position—wireless charging efficiency). The final relationship can be easily obtained through the above two mapping relationships: and judging the wireless charging efficiency according to the magnitude of the magnetic flux.
During the product application, when the user starts to use the wireless charging function,
1. detecting data on a Z axis of the geomagnetic sensor;
2. calculating wireless charging efficiency by the above formula epsilon=f (T);
3. presetting a threshold data delta for comparison with epsilon, such as setting delta=70%;
4. outputting whether the wireless charging position is in the optimal interval (a) by judging the size of epsilon and delta;
5. if not, the user is prompted by an output module of the terminal, such as audio, video, vibration, etc.
Wherein: the optimal section (a) is a range in which the wireless charging efficiency value is relatively high, and is considered to be in the optimal section when ε.gtoreq.delta, and is considered to be out of the optimal section when ε < delta.
Fig. 4 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention, as shown in fig. 4, including: display screen, touch-sensitive screen, main chip, geomagnetic sensor, wireless chip that charges, wireless charging coil, audio output module (loudspeaker), etc..
Fig. 5 is a flowchart of a method for wireless charging according to an embodiment of the present invention, as shown in fig. 5, including:
step 1, in the production design process of a terminal, pre-recording the wireless charging position and the data of a geomagnetic sensor, and storing the data in the terminal;
step 2, the terminal starts wireless charging, and field intensity data of a geomagnetic sensor during current wireless charging are sampled;
step 3, the terminal inquires whether the position is the optimal wireless charging area according to the field intensity data;
and 4, feeding back the result to the user, and prompting the user of the terminal during wireless charging.
If the position of the query is the optimal wireless charging area, wireless charging is performed; if the position of the query is not the optimal wireless charging area, generating an alarm instruction, and starting an audio output module according to the alarm instruction so as to prompt the user to replace.
According to the scheme provided by the embodiment of the invention, the user experience is increased, the charging efficiency is improved, the charging heating (which is serious when the charging efficiency is low) is reduced, and meanwhile, the hardware cost is not additionally increased.
Although the present invention has been described in detail hereinabove, the present invention is not limited thereto and various modifications may be made by those skilled in the art in accordance with the principles of the present invention. Therefore, all modifications made in accordance with the principles of the present invention should be understood as falling within the scope of the present invention.
Claims (7)
1. A method of wireless charging, wherein a mobile terminal includes a geomagnetic sensor, the method comprising:
when the mobile terminal detects that the mobile terminal is placed on a wireless charging tray to perform wireless charging, determining the magnetic field intensity at the current wireless charging through the magnetic flux obtained by the geomagnetic sensor;
the mobile terminal inquires whether the optimal placement position corresponding to the magnetic field intensity is stored in a preset mapping table according to the magnetic field intensity;
when the optimal placement position corresponding to the magnetic field strength is not stored in the preset mapping table, the mobile terminal generates an alarm instruction for prompting a user to adjust the placement position, and sends out an alarm prompt according to the alarm instruction;
when the optimal placement position corresponding to the magnetic field strength is determined to be stored in the preset mapping table, the mobile terminal performs wireless charging;
the preset mapping table is established and stored through the following steps:
the mobile terminal obtains charging efficiency of a plurality of placement positions by using the geomagnetic sensor, and obtains an optimal placement position range according to the charging efficiency of each placement position;
the mobile terminal obtains the magnetic field intensity of a plurality of optimal placement positions according to the optimal placement position range;
and the mobile terminal establishes and stores a mapping table containing the corresponding relation between the optimal placement position and the magnetic field intensity by binding each optimal placement position and the corresponding magnetic field intensity.
2. The method of claim 1, wherein the mobile terminal obtains charging efficiencies of a plurality of placement positions using a geomagnetic sensor, and obtaining an optimal placement position range according to the charging efficiency of each placement position comprises:
the mobile terminal respectively obtains magnetic field intensities placed at M positions by using a geomagnetic sensor, and obtains M charging efficiencies according to the magnetic field intensities at the M positions;
the mobile terminal obtains N optimal charging efficiencies by comparing the M charging efficiencies with preset charging efficiencies respectively;
the mobile terminal obtains an optimal placement position range according to the N optimal charging efficiencies;
the magnetic field strength refers to the magnetic field strength of the mobile terminal and the wireless charging tray in the vertical direction; m and N are positive integers, M > N.
3. The method of claim 1, wherein the mobile terminal querying whether the optimal placement position corresponding to the magnetic field strength is stored in a preset mapping table according to the magnetic field strength comprises:
the mobile terminal inquires whether the magnetic field intensity is stored in a preset mapping table according to the magnetic field intensity;
if the magnetic field intensity is not stored in the preset mapping table, the mobile terminal determines that the optimal placement position corresponding to the magnetic field intensity is not stored in the preset mapping table;
and if the magnetic field intensity is stored in the preset mapping table, the mobile terminal determines that the optimal placement position corresponding to the magnetic field intensity is stored in the preset mapping table.
4. A device for wireless charging, comprising:
the acquisition module is used for determining the magnetic field intensity at the current wireless charging through the magnetic flux acquired by the geomagnetic sensor when the wireless charging tray is detected to be placed for wireless charging;
the inquiring module is used for inquiring whether the optimal placement position corresponding to the magnetic field intensity is stored in a preset mapping table according to the magnetic field intensity;
the alarm module is used for generating an alarm instruction for prompting a user to adjust the placement position when the optimal placement position corresponding to the magnetic field strength is not stored in the preset mapping table, and sending an alarm prompt according to the alarm instruction;
the device is also used for wireless charging of the mobile terminal when the optimal placement position corresponding to the magnetic field strength is determined to be stored in the preset mapping table;
the apparatus further includes a mapping table building module, the mapping table building module including:
an acquisition unit configured to acquire charging efficiencies of a plurality of placement positions using a geomagnetic sensor, acquire an optimal placement position range according to the charging efficiency of each placement position, and acquire magnetic field strengths of the plurality of optimal placement positions according to the optimal placement position range;
and the mapping table establishing unit is used for establishing and storing a mapping table containing the corresponding relation between the optimal placement position and the magnetic field strength by binding each optimal placement position and the corresponding magnetic field strength.
5. The apparatus of claim 4, wherein the query module is specifically configured to query from a preset mapping table whether the magnetic field strength is stored according to the magnetic field strength, and determine that an optimal placement position corresponding to the magnetic field strength is not stored in the preset mapping table when the magnetic field strength is not stored in the preset mapping table, and determine that an optimal placement position corresponding to the magnetic field strength is stored in the preset mapping table when the magnetic field strength is stored in the preset mapping table.
6. A device for wireless charging, the device comprising: a processor, and a memory coupled to the processor; the memory has stored thereon a program for wireless charging executable on the processor, which when executed by the processor, implements the steps of the method for wireless charging as claimed in any one of claims 1 to 3.
7. A computer storage medium, characterized in that the storage medium stores a program for wireless charging, which when executed by a processor implements the steps of the method for wireless charging according to any one of claims 1 to 3.
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| CN201811097583.9A CN110943553B (en) | 2018-09-20 | 2018-09-20 | Wireless charging method, device, equipment and storage medium |
| PCT/CN2019/106575 WO2020057579A1 (en) | 2018-09-20 | 2019-09-19 | Wireless charging method, apparatus and device, and storage medium |
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| CN201811097583.9A CN110943553B (en) | 2018-09-20 | 2018-09-20 | Wireless charging method, device, equipment and storage medium |
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2019
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| WO2020057579A1 (en) | 2020-03-26 |
| CN110943553A (en) | 2020-03-31 |
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