CN108206568B - Wireless charging power determination method, device and system - Google Patents
Wireless charging power determination method, device and system Download PDFInfo
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- CN108206568B CN108206568B CN201711476773.7A CN201711476773A CN108206568B CN 108206568 B CN108206568 B CN 108206568B CN 201711476773 A CN201711476773 A CN 201711476773A CN 108206568 B CN108206568 B CN 108206568B
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 230000005540 biological transmission Effects 0.000 claims abstract description 17
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- 230000007613 environmental effect Effects 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
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- H02J7/025—
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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
- H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The application relates to a wireless charging power determination methodThe method, the charger, the receiving device and the system comprise the following steps: (1) determining the ith wireless charging unit from the receiving equipment to the charger as a base point, and setting the distance as
Sequentially determining the distances from all the wireless charging units to the receiving equipment; (2) calculating the power which can be transmitted by each wireless charging unit and the total effective power which can be transmitted by the charger; (3) comparing the total power that can be transmitted by the charger with a target power of the receiving device; (4) and selecting the number of the wireless charging units and outputting the target power. This application can adjust a plurality of wireless charging unit output, satisfies wireless charging power demand, provides wireless power transmission's efficiency.
Description
Technical Field
The present disclosure relates to the field of wireless charging, and in particular, to a method, a charger, a receiving device and a system for determining wireless charging power.
Background
Wireless charging has been gradually popularized in daily life, especially along with the rapid development of intelligent terminals, wireless charging application in mobile terminals is increasingly widespread, then, when wireless charging is performed in the prior art, in order to improve transmission efficiency, generally, the position of wireless receiving equipment is firstly detected, then a transmitting coil closest to the wireless receiving equipment is selected to transmit wireless electric energy, other coils are closed, so as to improve the efficiency of wireless transmitting electric energy to the maximum extent, then, although the mode can meet the requirement of efficiency to a certain extent, the size of transmitting power cannot be adjusted according to the wireless equipment, and the charging selectivity of the receiving equipment is limited to a certain extent.
Disclosure of Invention
In order to solve the technical problems: the application provides a wireless charging power determination method, which comprises the following steps: (1) determining the ith wireless charging unit from the receiving equipment to the charger as a base point, and setting the distance as
In turn determine what isA distance from the wireless charging unit to the receiving device; (2) calculating the power which can be transmitted by each wireless charging unit and the total effective power which can be transmitted by the charger; (3) comparing the total power that can be transmitted by the charger with a target power of the receiving device; (4) and selecting the number of the wireless charging units and outputting the target power.
The wireless charging power determining method, wherein the power that each wireless charging unit can transmit in step (2) is:
The wireless charging power determination method, wherein the effective value of the charger transmission power received by the receiving device is:
wherein the content of the first and second substances,
satisfies the following relation:
The wireless charging power determination method includes the steps of (3) specifically obtaining a difference value between a total effective power value and a target power value of the charger, comparing the difference value with a preset threshold value, and feeding back a comparison result to the charger.
The wireless charging power determination method includes the steps of (4) traversing wireless charging units when the difference is greater than a first preset threshold, selecting a wireless charging unit combination meeting the difference, and closing the wireless charging unit combination meeting the difference; and when the difference is smaller than a first preset threshold value, the charger sends information to the receiving equipment, the receiving equipment selects whether to reduce the receiving power, and after receiving the confirmation information of the receiving equipment, the charger sends the wireless power according to the calculated maximum effective power value.
The wireless charging power determination method includes the steps of (4) traversing the wireless charging units when the difference is greater than a second preset threshold, determining a first combination of the wireless charging units meeting the difference and a second combination of the wireless charging units improving wireless charging transmission efficiency, sending the first combination and the second combination to the receiving device, and determining to perform wireless power transmission according to the first combination or the second combination according to user selection; and when the difference is smaller than a first preset threshold value, the charger sends information to the receiving equipment, the receiving equipment selects whether to reduce the receiving power, and after receiving the confirmation information of the receiving equipment, the charger sends the wireless power according to the calculated maximum effective power value.
The wireless charging power determination method is characterized in that the first preset threshold is smaller than a second preset threshold.
A charger comprising k wireless charging units tiled on a substrate, comprising a wireless charging power determination method as described in any of the above.
A receiving device comprising the wireless charging power determination method as described in any of the above.
A wireless power transmission system comprises a charger and a receiving device, wherein the charger and the receiving device perform wireless power transmission by the wireless charging power determination method, and the receiving device comprises a mobile terminal.
This application can adapt to the charger of specific a plurality of wireless charging units and carry out wireless power adjustment, makes wireless charging unit according to distance control output, through the wireless charging unit who matches different distances and different quantity, can give the wireless charging of receiving arrangement fast, makes the receiving arrangement real-time adjustment safe distance that charges simultaneously, makes charge efficiency improve.
Drawings
Fig. 1 is a diagram illustrating a method for determining wireless charging power according to the present application.
Detailed Description
The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.
As shown in fig. 1, a wireless charging power determining method is provided for the present application, which includes the following steps: (1) determining the ith wireless charging unit from the receiving equipment to the charger as a base point, and setting the distance as
Sequentially determining the distances from all the wireless charging units to the receiving equipment; (2) calculating the power which can be transmitted by each wireless charging unit and the total effective power which can be transmitted by the charger; (3) comparing the total power that can be transmitted by the charger with a target power of the receiving device; (4) and selecting the number of the wireless charging units and outputting the target power.
The wireless charging power determining method, wherein the power that each wireless charging unit can transmit in step (2) is:
The wireless charging power determination method, wherein the effective value of the charger transmission power received by the receiving device is:
The wireless charging power determination method includes the steps of (3) specifically obtaining a difference value between a total effective power value and a target power value of the charger, comparing the difference value with a preset threshold value, and feeding back a comparison result to the charger.
The wireless charging power determination method includes the steps of (4) traversing wireless charging units when the difference is greater than a first preset threshold, selecting a wireless charging unit combination meeting the difference, and closing the wireless charging unit combination meeting the difference; and when the difference is smaller than a first preset threshold value, the charger sends information to the receiving equipment, the receiving equipment selects whether to reduce the receiving power, and after receiving the confirmation information of the receiving equipment, the charger sends the wireless power according to the calculated maximum effective power value.
The wireless charging power determination method includes the steps of (4) traversing the wireless charging units when the difference is greater than a second preset threshold, determining a first combination of the wireless charging units meeting the difference and a second combination of the wireless charging units improving wireless charging transmission efficiency, sending the first combination and the second combination to the receiving device, and determining to perform wireless power transmission according to the first combination or the second combination according to user selection; and when the difference is smaller than a first preset threshold value, the charger sends information to the receiving equipment, the receiving equipment selects whether to reduce the receiving power, and after receiving the confirmation information of the receiving equipment, the charger sends the wireless power according to the calculated maximum effective power value.
The wireless charging power determination method is characterized in that the first preset threshold is smaller than a second preset threshold.
A charger comprising k wireless charging units tiled on a substrate, comprising a wireless charging power determination method as described in any of the above.
A receiving device comprising the wireless charging power determination method as described in any of the above.
A wireless power transmission system comprises a charger and a receiving device, wherein the charger and the receiving device perform wireless power transmission by the wireless charging power determination method, and the receiving device comprises a mobile terminal.
This application can adapt to the charger of specific a plurality of wireless charging units and carry out wireless power adjustment, makes wireless charging unit according to distance control output, through the wireless charging unit who matches different distances and different quantity, can give the wireless charging of receiving arrangement fast, makes the receiving arrangement real-time adjustment safe distance that charges simultaneously, makes charge efficiency improve.
Claims (6)
1. A wireless charging power determination method is characterized by comprising the following stepsThe method comprises the following steps: (1) determining the ith wireless charging unit from the receiving equipment to the charger as a base point, and setting the distance to be diSequentially determining the distances from all the wireless charging units to the receiving equipment; (2) calculating the power which can be transmitted by each wireless charging unit and the total effective power which can be transmitted by the charger; (3) comparing the total power that can be transmitted by the charger with a target power of the receiving device; (4) selecting the number of wireless charging units and outputting target power; in the step (2), the power that each wireless charging unit can transmit is:
wherein di represents the distance from the charger to the receiving device, α and β are constants determined according to the hardware of the charger and the receiving device and environmental factors, and D is the maximum distance from the charger to the receiving device for wireless charging; the effective value of the charger transmission power received by the receiving device is as follows:
wherein, CiSatisfies the following relation:
wherein k is the total number of the wireless charging units, x is the zero point of the placement position of the receiving equipment, and an abscissa value of the wireless charging unit in a coordinate system is formed; the step (3) specifically comprises the steps of calculating a difference value between the total effective power value and the target power value of the charger, comparing the difference value with a preset threshold value, and feeding back a comparison result to the charger; the step (4) specifically includes traversing the wireless charging units when the difference is greater than a first preset threshold, selecting the wireless charging unit combination meeting the difference, and closing the wireless charging unit combination meeting the difference; and when the difference is smaller than a first preset threshold value, the charger sends information to the receiving equipment, the receiving equipment selects whether to reduce the receiving power, and after receiving the confirmation information of the receiving equipment, the charger sends the wireless power according to the calculated maximum effective power value.
2. The method according to claim 1, wherein the step (4) specifically includes traversing the wireless charging units when the difference is greater than a second preset threshold, determining a first combination of the wireless charging units that satisfies the difference, and a second combination of the wireless charging units that improves wireless charging transmission efficiency, sending the first combination and the second combination to the receiving device, and determining wireless power transmission according to the first combination or the second combination according to a selection of a user; and when the difference is smaller than a first preset threshold value, the charger sends information to the receiving equipment, the receiving equipment selects whether to reduce the receiving power, and after receiving the confirmation information of the receiving equipment, the charger sends the wireless power according to the calculated maximum effective power value.
3. The wireless charging power determination method of claim 2, wherein the first preset threshold is less than a second preset threshold.
4. A charger, characterized in that the charger comprises k wireless charging units, the k wireless charging units are tiled on a substrate, comprising the wireless charging power determination method according to any one of claims 1-3.
5. A receiving device, characterized by comprising the wireless charging power determination method according to any one of claims 1 to 3.
6. A wireless power transmission system, comprising a charger and a receiving device, wherein the charger and the receiving device perform wireless power transmission according to the wireless charging power determination method of any one of claims 1 to 3, and the receiving device comprises a mobile terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711476773.7A CN108206568B (en) | 2017-12-29 | 2017-12-29 | Wireless charging power determination method, device and system |
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| CN201711476773.7A CN108206568B (en) | 2017-12-29 | 2017-12-29 | Wireless charging power determination method, device and system |
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| WO2020147127A1 (en) * | 2019-01-18 | 2020-07-23 | Oppo广东移动通信有限公司 | Wireless charging control method and charging control apparatus |
| CN111703328B (en) * | 2020-05-06 | 2023-06-02 | 惠州市德赛西威汽车电子股份有限公司 | Wireless charging pile system and charging method thereof |
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| US8169185B2 (en) * | 2006-01-31 | 2012-05-01 | Mojo Mobility, Inc. | System and method for inductive charging of portable devices |
| US20100328044A1 (en) * | 2006-10-26 | 2010-12-30 | Koninklijke Philips Electronics N.V. | Inductive power system and method of operation |
| KR101950309B1 (en) * | 2011-06-07 | 2019-02-21 | 삼성전자주식회사 | Method for controlling wireless power of receiver in wireless power transmitting/receiving system and the receiver |
| JP2014014202A (en) * | 2012-07-03 | 2014-01-23 | Auto Network Gijutsu Kenkyusho:Kk | Power exchange system |
| CN105207375B (en) * | 2015-10-30 | 2018-04-20 | 武汉大学 | A kind of combined plane dynamic radio passes can transmitting coil device |
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Effective date of registration: 20210714 Address after: 518100 1st to 5th floors of No.10 factory building and 1st to 5th floors of No.11 factory building of antuoshan hi tech Industrial Park, sha'er community, Shajing street, Bao'an District, Shenzhen City, Guangdong Province Applicant after: SHENZHEN JOWAY POWER SUPPLY Co.,Ltd. Address before: No.107, Guyuan South Road, Huimin County, Binzhou City, Shandong Province Applicant before: Yan Huaibin |
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