CN103354376A - Intelligent universal wireless charging system for mobile phone - Google Patents

Intelligent universal wireless charging system for mobile phone Download PDF

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Publication number
CN103354376A
CN103354376A CN2013102588028A CN201310258802A CN103354376A CN 103354376 A CN103354376 A CN 103354376A CN 2013102588028 A CN2013102588028 A CN 2013102588028A CN 201310258802 A CN201310258802 A CN 201310258802A CN 103354376 A CN103354376 A CN 103354376A
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CN
China
Prior art keywords
mobile phone
phone wireless
wireless charging
battery
module
Prior art date
Application number
CN2013102588028A
Other languages
Chinese (zh)
Inventor
田勇
夏必忠
王明旺
孙威
徐智慧
Original Assignee
清华大学深圳研究生院
欣旺达电子股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 清华大学深圳研究生院, 欣旺达电子股份有限公司 filed Critical 清华大学深圳研究生院
Priority to CN2013102588028A priority Critical patent/CN103354376A/en
Publication of CN103354376A publication Critical patent/CN103354376A/en

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Abstract

The present invention provides an intelligent universal wireless charging system for a mobile phone. The system comprises a mobile phone wireless charger, a wireless charging battery and a mobile phone wireless charging management terminal. The mobile phone wireless charger is provided with a Bluetooth communication module for information interaction with the mobile phone wireless charging management terminal, and according to basic information of a battery to be charged, a charging mode matching with the battery is selected. The wireless charging battery includes an energy receiving coil, a rectification and filtering circuit and a battery unit. The receiving coil is arranged at the bottom of the wireless charging battery, and is provided with an electromagnetic shielding layer on the back. The mobile phone wireless charging management terminal can detect relative parameters of the battery in real time, and feed the information back to the mobile phone wireless charger by the own Bluetooth module of the mobile phone, thereby facilitating the real-time adjustment of the charging mode and the charging power. Besides, the mobile phone wireless charging management terminal has a charging completion reminding function. The system provided by the invention can be used for wireless charging of mobile phone batteries of different models, and is simple and convenient to operate.

Description

A kind of general mobile phone wireless charging system of intelligence

Technical field

The present invention relates to the wireless charging field of electronic product, more particularly, relate to a kind of general mobile phone wireless charging system of intelligence.

Background technology

As a kind of modern means of communication, mobile phone enters into already in the middle of the daily life and is playing the part of extremely important role, yet present mobile phone mainly adopts wired charging (or claiming the conduction charging) mode, mainly there is the problem of the following aspects in this charging modes: be connected with charging conductor between (1) charger and the mobile phone, having a strong impact on cleaning and the aesthetic property of environment; (2) the charging inlet disunity of various trumpeter's machine causes the versatility of charger relatively poor.The mobile phone wireless charging technique has become the research direction of a hot topic at present as an effective solution of the problems referred to above.

In the prior art, patent of invention 201210248190.X discloses a kind of Mobile phone wireless charging device, comprise power supply, high-frequency generator, high frequency power amplifier, wireless transmission coil, wireless receiving module, can be for the multiple electronic products such as mobile phone carry out wireless charging, however this patent of invention does not provide charge power to regulate and the solution of mobile phone control terminal.Patent of invention 201010501297.1 discloses a kind of wireless charging battery; comprise battery unit, wireless charging module and switch; can realize controlled wireless energy receiving function; yet this patent of invention does not arrange electro-magnetic screen layer between wireless charging module and battery unit; therefore the high-frequency energy signal in the wireless charging module might affect the normal operation of the circuit such as the interior detection of battery unit, protection; what in addition the open and close of wireless charging module control is adopted is push switch, and there are the defectives such as physical abrasion and operation inconvenience in this control mode.

Therefore, in order to remedy the deficiency of prior art or scheme, need a kind of more intelligent general mobile phone wireless charging system of design.

Summary of the invention

The object of the invention is to the defective for existing wired charging modes existence, a kind of general mobile phone wireless charging system of intelligence is provided.

For achieving the above object, the technical solution adopted in the present invention is as follows:

A kind of general mobile phone wireless charging system of intelligence comprises mobile phone wireless charger, wireless charging battery and mobile phone wireless Charge Management terminal.Wherein, the mobile phone wireless charger also comprises a bluetooth communication module except comprising rectifying and wave-filtering, power adjustments, high-frequency inversion, driver module, control module and transmitting coil; Wireless charging battery is also integrated receiving coil and current rectifying and wave filtering circuit except comprising battery unit, in order not affect the work of other electronic circuits, receiving coil is placed the bottom of battery of mobile phone and has increased electro-magnetic screen layer at its back side; Mobile phone wireless Charge Management terminal comprises the functional modules such as battery parameter reads, bluetooth state detection, bluetooth communication control, information transmission, parameter configuration.

Has the information interaction function between the described wireless charging battery of this mobile phone wireless charging system and the mobile phone wireless charger, and adopt the Bluetooth communication mode, because current mobile phone substantially all carries Bluetooth function, therefore wireless charging battery side need not to increase extra communication module, is conducive to reduce the cost of system.

Described mobile phone wireless charger has multiple charge mode and charge power regulatory function, can automatically select best charge mode and regulate in real time charge power according to the feedback information of mobile phone terminal, to realize safe, the efficient charging to battery.

Described mobile phone wireless Charge Management terminal can read the information such as battery size, cell voltage and battery dump energy, and is sent to the mobile phone wireless charger by bluetooth approach, for the adjusting of choosing with charge power of charge mode provides foundation.

Described mobile phone wireless Charge Management terminal is the detection of handset bluetooth state automatically, automatically opens Bluetooth function if bluetooth is in closed condition, otherwise keeps the bluetooth opening.

Described mobile phone wireless Charge Management terminal can be according to the parameter configuration situation when charging is finished, the prompting or send short message prompt to default phone number of automatically sounding.

Described mobile phone wireless Charge Management terminal is finished reminder parameters with charging the interface is set, the configuration that can be correlated with to alerting pattern.

The invention has the beneficial effects as follows: the present invention greatly facilitates user's serviceability by the communication between bluetooth module realization wireless charger and the wireless charging battery, and,

Description of drawings

Fig. 1 is the structured flowchart of the general mobile phone wireless charging system of a kind of intelligence of the present invention;

Fig. 2 is the workflow diagram of mobile phone wireless charger of the present invention;

Fig. 3 is the functional module composition diagram of mobile phone wireless Charge Management terminal of the present invention;

Fig. 4 is that the charging of mobile phone wireless Charge Management terminal of the present invention is finished to remind the interface is set;

Fig. 5 is the workflow diagram of mobile phone wireless charging valve terminal of the present invention.

Embodiment

For the ease of better understanding and implementing the present invention, below in conjunction with the drawings and specific embodiments the present invention is done further to describe in detail.

As shown in Figure 1, a kind of general mobile phone wireless charging system of intelligence comprises mobile phone wireless charger 1, wireless charging battery 2 and mobile phone wireless Charge Management terminal 3.

Wireless charger 1 is except comprising the existing disclosed rectifying and wave-filtering 11 of patent of invention of great majority, power adjustments 12, high-frequency inversion 13, transmitting coil 14, driver module 15 and control module 16, also comprise a bluetooth communication module 17, in order to receiving the information such as battery of mobile phone model, voltage and dump energy, for the selection of charge mode and the real-time adjusting of charge power provide foundation.Mobile phone wireless charger 1 comprises rectification filtering module 11, power conditioning module 12, high-frequency inversion module 13, driver module 15, control module 16, transmitting coil 14 and a bluetooth communication module 17, extraneous alternating current input rectifying filtration module 11 carries out inputing to power conditioning module 12 behind the rectifying and wave-filtering, after carrying out power adjustments, power conditioning module 12 inputs to high-frequency inversion module 13, high-frequency inversion module 13 is exported to transmitting coil 14, converting the charged electrical magnetic wave to through transmitting coil 14 sends to charging mobile phone battery, driver module 15 is connected on the control module 16, driver module 15 is power ratio control adjustment module 12 and 13 work of high-frequency inversion module respectively, and bluetooth communication module 17 is connected on the control module 16.

Wireless charging battery 2 is comprised of receiving coil 21, electro-magnetic screen layer 22, rectifier filter 23 and battery unit 24, receiving coil 21 is used for receiving the charged electrical magnetic wave that wireless charger 1 sends, and output it to rectifier filter 23, after rectifier filter 23 rectifications, export to battery unit 24, give battery unit 24 chargings.In the present embodiment, place the design of mobile phone cell inner to improve integration and the reliability of system receiving coil 21, electro-magnetic screen layer 22 and current rectifying and wave filtering circuit 23, in order not affect the work of battery and other electronic circuits of interior of mobile phone, receiving coil 21 is placed the bottom of battery of mobile phone, and increased electro-magnetic screen layer 22 at its back side.Usually, electro-magnetic screen layer 22 can adopt the ferrimagnet of high magnetic permeability usually, such as permalloy, dilval etc.

In the general mobile phone wireless charging system of a kind of intelligence of the present invention, possesses the information interaction function between described wireless charging battery 2 and the mobile phone wireless charger, and adopt the Bluetooth communication mode, because current mobile phone has substantially all carried Bluetooth function, therefore the wireless charging battery side need not extra communication module, is conducive to reduce the cost of system.In addition, Bluetooth technology itself also is a kind of wireless communication mode of opening, and its distinguishing feature is exactly with low cost.

In the general mobile phone wireless charging system of a kind of intelligence of the present invention, described mobile phone wireless charger has multiple charge mode and charge power regulatory function, can select best charge mode and regulate in real time charge power according to battery electric quantity information according to the battery size that has, to realize safe, the efficient charging of battery, greatly improved simultaneously the versatility of wireless charger, its detailed engineering process as shown in Figure 2.

As shown in Figure 3, in the present embodiment, also be provided with mobile phone wireless Charge Management terminal 3, described mobile phone wireless Charge Management terminal 3 comprises the battery parameter read module, the bluetooth state detection module, the bluetooth communication control module, the information sending module, the functional modules such as parameter configuration module, wherein the battery parameter read module can be used in the automatic acquisition battery size, the information such as cell voltage and battery dump energy, the bluetooth state detection module is for detection of in the bluetooth communication module 4(present embodiment, bluetooth communication module 4 can be the bluetooth module of embedded in mobile phone, or adopt the bluetooth module set up) operating state, the bluetooth communication control module is used for 4 work of control bluetooth communication module, the information sending module is used for outwards sending charging and finishes information, and parameter configuration module is used for the parameter of configurating mobile wireless charging office terminal 3.Information such as mobile phone wireless Charge Management terminal 3 can the automatic acquisition battery size, cell voltage and battery dump energy, and be sent to the mobile phone wireless charger by bluetooth approach are for the adjusting of charge power provides foundation.

As shown in Figure 4, in the present embodiment, mobile phone wireless Charge Management terminal 3 provides a charging to finish the reminder parameters configuration interface, is used for user preset " charging is finished " alerting pattern.Described interface comprises the sound prompting tick boxes, and ring prompting is selected, and note is reminded tick boxes, and note receives the phone number setting.

In the present embodiment, mobile phone wireless Charge Management terminal 3 can adopt the embedded in mobile phone functional module to replace, and it is arranged on interior of mobile phone, realizes by mobile phone existing capability module, can be implemented in the line charging to battery of mobile phone; Mobile phone wireless Charge Management terminal 3 also can arrange separately, by parameter configuration module as central control module, other modules are connected on the parameter configuration module, and bluetooth communication module 4 also is connected on the parameter configuration module, realize that battery of mobile phone is separately in 3 chargings of mobile phone wireless Charge Management terminal.

As shown in Figure 5, the workflow of described mobile phone wireless Charge Management terminal is as follows:

S1: program start;

S2: read battery of mobile phone information, mainly comprise battery size, cell voltage and battery dump energy;

S3: detection of handset Bluetooth function opening, if Bluetooth function is not opened, then automatically open Bluetooth function, if Bluetooth function is opened, then directly enter next step;

S4: automatically carry out Bluetooth pairing, and battery of mobile phone information exchange accessed in the step 2 is crossed bluetooth send to mobile phone wireless charger end, and wait for the response message that receives mobile phone wireless charger end;

S5: judge whether to receive the correct response message from the wireless charger end, if it is begin to carry out wireless charging, no, then again send battery information;

S6: periodically detect battery electric quantity information and send in real time the mobile phone wireless charger;

S7: judge whether battery electric quantity is full of, no, then continue charging, be then to send " charging is finished " information according to the parameter configuration situation;

S8: EP (end of program).

The above only is a preferred embodiment of the present invention, be not to limit the present invention, anyly be familiar with this professional technology or researcher, within not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations.All technical solution of the present invention contents that do not break away from, according to any simple modification, equivalent variations and the modification that technical spirit of the present invention is done above embodiment, all should be in claim protection range of the present invention.

Claims (10)

1. the general mobile phone wireless charging system of an intelligence, it is characterized in that: comprise mobile phone wireless charger, wireless charging battery and mobile phone wireless Charge Management terminal, mobile phone wireless Charge Management terminal control mobile phone wireless charger charges to wireless charging battery, is respectively equipped with a bluetooth communication module in mobile phone wireless charger and the mobile phone wireless Charge Management terminal.
2. the general mobile phone wireless charging system of a kind of intelligence according to claim 1, it is characterized in that: described mobile phone wireless charger comprises rectification filtering module, power conditioning module, the high-frequency inversion module, driver module, control module, transmitting coil and a bluetooth communication module, extraneous alternating current input rectifying filtration module carries out inputing to power conditioning module behind the rectifying and wave-filtering, after carrying out power adjustments, power conditioning module inputs to the high-frequency inversion module, the high-frequency inversion module is exported to transmitting coil, send through transmitting coil, driver module is connected on the control module, driver module is power ratio control adjustment module and the work of high-frequency inversion module respectively, and bluetooth communication module is connected on the control module.
3. the general mobile phone wireless charging system of a kind of intelligence according to claim 1, it is characterized in that, include battery unit, receiving coil and current rectifying and wave filtering circuit in the described mobile phone wireless rechargeable battery, receiving coil be used for to receive the charged electrical magnetic wave that the mobile phone wireless charger sends and exports to current rectifying and wave filtering circuit, charges to battery unit after the current rectifying and wave filtering circuit rectification.
4. the general mobile phone wireless charging system of a kind of intelligence according to claim 1 is characterized in that: the information interaction employing Bluetooth communication mode between described mobile phone wireless charger and the mobile phone wireless rechargeable battery.
5. the general mobile phone wireless charging system of a kind of intelligence according to claim 2, it is characterized in that: described mobile phone wireless charger has multiple charge mode and charge power regulatory function.
6. the general mobile phone wireless charging system of a kind of intelligence according to claim 3, it is characterized in that: described receiving coil places the bottom of battery unit, and the receiving coil back side is with electro-magnetic screen layer.
7. the general mobile phone wireless charging system of a kind of intelligence according to claim 1, it is characterized in that: described mobile phone wireless Charge Management terminal can read the information such as battery size, cell voltage and battery dump energy.
8. the general mobile phone wireless charging system of a kind of intelligence according to claim 1, it is characterized in that: described mobile phone wireless Charge Management terminal can be sent to the mobile phone wireless charger by bluetooth approach with the battery information that reads, and is convenient to it and automatically charge mode and charge power is adjusted in real time according to battery parameter.
9. the general mobile phone wireless charging system of a kind of intelligence according to claim 1, it is characterized in that: described mobile phone wireless Charge Management terminal is the detection of handset bluetooth state automatically, automatically open Bluetooth function if bluetooth is in closed condition, otherwise keep the bluetooth opening.
10. the general mobile phone wireless charging system of a kind of intelligence according to claim 1, it is characterized in that: described mobile phone wireless Charge Management terminal has charging and finishes prompting function, the prompting or send short message prompt to default phone number of can sounding when charging is finished.
CN2013102588028A 2013-06-26 2013-06-26 Intelligent universal wireless charging system for mobile phone CN103354376A (en)

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Cited By (29)

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CN103501060A (en) * 2013-10-21 2014-01-08 哈尔滨工业大学 Relay desktop multi-load wireless power-supplying system
CN103618355A (en) * 2013-11-29 2014-03-05 深圳Tcl新技术有限公司 Wireless charging method, emitting device, receiving device and wireless charging system
CN103944278A (en) * 2014-03-14 2014-07-23 张宝权 Remote wireless charging method and wireless charging device
CN103986211A (en) * 2014-05-26 2014-08-13 杭州电子科技大学 Intelligent charging control method
CN103986210A (en) * 2014-05-26 2014-08-13 杭州电子科技大学 Intelligent charger
CN104539059A (en) * 2014-12-03 2015-04-22 北京智谷睿拓技术服务有限公司 Wireless charging method and apparatus, wireless energy providing method and apparatus, user equipment
CN104538997A (en) * 2014-11-29 2015-04-22 四川长虹电器股份有限公司 Intelligent wireless charging system and working method thereof
CN104578289A (en) * 2014-12-31 2015-04-29 南安市高捷电子科技有限公司 Wireless electromagnetic overlapping mobile phone
CN104785390A (en) * 2015-04-29 2015-07-22 厦门建霖工业有限公司 Magnetic resonance chargeable shower head and implementation method for charging and discharging magnetic resonance chargeable shower head
CN104916877A (en) * 2015-05-29 2015-09-16 努比亚技术有限公司 Wireless charging method, wireless charging system and wireless router
CN105140985A (en) * 2015-08-05 2015-12-09 青岛海信移动通信技术股份有限公司 Mobile terminal, direct-charge power adapter and charging method
CN105186616A (en) * 2015-09-21 2015-12-23 东华大学 Mobile phone wireless charger capable of communicating with wirelessly charged mobile phone
CN105337330A (en) * 2014-08-11 2016-02-17 联想(北京)有限公司 Control method and electronic apparatus
CN105429310A (en) * 2015-12-14 2016-03-23 国网天津市电力公司 On-site operation hand-held terminal wireless charging apparatus
CN105826623A (en) * 2015-09-14 2016-08-03 维沃移动通信有限公司 Charging method, charger and to-be-charged device
CN106026320A (en) * 2016-06-22 2016-10-12 广州致远电子股份有限公司 Data acquisition equipment and power supply device thereof, and power supply method
CN106026231A (en) * 2016-05-30 2016-10-12 广东欧珀移动通信有限公司 Wireless charging method and device
CN106026234A (en) * 2016-06-06 2016-10-12 薛寿贞 Wireless charging system
CN106532989A (en) * 2016-12-26 2017-03-22 宇龙计算机通信科技(深圳)有限公司 Wireless charging control circuit, wireless charging control method and electronic device
CN106532823A (en) * 2016-11-16 2017-03-22 国网山东省电力公司青岛供电公司 Intelligent charging method and device and device selection method
CN106602738A (en) * 2015-10-14 2017-04-26 河北长孚电气设备有限公司 Magnetic coupling resonant wireless power supply system
WO2017143546A1 (en) * 2016-02-24 2017-08-31 战炜 Charging system and charging method
CN107171419A (en) * 2017-05-31 2017-09-15 上海电力学院 Wireless electric energy transmission device based on Bluetooth control
WO2017185583A1 (en) * 2016-04-25 2017-11-02 上海墨百意信息科技有限公司 Method and device for detecting wireless charging receiving device being placed on wireless charging transmitter
WO2018018826A1 (en) * 2016-07-29 2018-02-01 施京京 Wireless connection device for mobile apparatus
CN107769332A (en) * 2017-11-22 2018-03-06 联想(北京)有限公司 Rechargeable devices and its charging method, charging device
US10044204B2 (en) 2015-08-05 2018-08-07 Hisense Mobhe Communications Technology Co., Ltd. Power source adaptor for charging directly
CN105807882B (en) * 2016-02-25 2019-02-15 努比亚技术有限公司 Adaptive charging method and intelligent terminal based on fingerprint
US10461549B2 (en) 2015-08-05 2019-10-29 Hisense Mobile Communications Technology Co., Ltd. Mobile terminal, DC-charging power source adaptor, and charging method

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Cited By (34)

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Publication number Priority date Publication date Assignee Title
CN103501060A (en) * 2013-10-21 2014-01-08 哈尔滨工业大学 Relay desktop multi-load wireless power-supplying system
CN103618355A (en) * 2013-11-29 2014-03-05 深圳Tcl新技术有限公司 Wireless charging method, emitting device, receiving device and wireless charging system
CN103944278A (en) * 2014-03-14 2014-07-23 张宝权 Remote wireless charging method and wireless charging device
CN103986211A (en) * 2014-05-26 2014-08-13 杭州电子科技大学 Intelligent charging control method
CN103986210A (en) * 2014-05-26 2014-08-13 杭州电子科技大学 Intelligent charger
CN105337330A (en) * 2014-08-11 2016-02-17 联想(北京)有限公司 Control method and electronic apparatus
CN105337330B (en) * 2014-08-11 2018-08-31 联想(北京)有限公司 A kind of control method and electronic device
CN104538997A (en) * 2014-11-29 2015-04-22 四川长虹电器股份有限公司 Intelligent wireless charging system and working method thereof
CN104539059A (en) * 2014-12-03 2015-04-22 北京智谷睿拓技术服务有限公司 Wireless charging method and apparatus, wireless energy providing method and apparatus, user equipment
CN104539059B (en) * 2014-12-03 2017-11-14 北京智谷睿拓技术服务有限公司 Wireless charging method and device, wireless energy provide method and device, user equipment
CN104578289A (en) * 2014-12-31 2015-04-29 南安市高捷电子科技有限公司 Wireless electromagnetic overlapping mobile phone
CN104785390A (en) * 2015-04-29 2015-07-22 厦门建霖工业有限公司 Magnetic resonance chargeable shower head and implementation method for charging and discharging magnetic resonance chargeable shower head
CN104916877A (en) * 2015-05-29 2015-09-16 努比亚技术有限公司 Wireless charging method, wireless charging system and wireless router
US10044204B2 (en) 2015-08-05 2018-08-07 Hisense Mobhe Communications Technology Co., Ltd. Power source adaptor for charging directly
US10461549B2 (en) 2015-08-05 2019-10-29 Hisense Mobile Communications Technology Co., Ltd. Mobile terminal, DC-charging power source adaptor, and charging method
CN105140985A (en) * 2015-08-05 2015-12-09 青岛海信移动通信技术股份有限公司 Mobile terminal, direct-charge power adapter and charging method
US10097032B2 (en) 2015-08-05 2018-10-09 Hisense Mobile Communications Technology Co., Ltd. Mobile terminal and charging method
CN105826623A (en) * 2015-09-14 2016-08-03 维沃移动通信有限公司 Charging method, charger and to-be-charged device
CN105186616A (en) * 2015-09-21 2015-12-23 东华大学 Mobile phone wireless charger capable of communicating with wirelessly charged mobile phone
CN105186616B (en) * 2015-09-21 2017-12-26 东华大学 A kind of mobile phone wireless charger that can be communicated with the mobile phone in wireless charging
CN106602738A (en) * 2015-10-14 2017-04-26 河北长孚电气设备有限公司 Magnetic coupling resonant wireless power supply system
CN105429310A (en) * 2015-12-14 2016-03-23 国网天津市电力公司 On-site operation hand-held terminal wireless charging apparatus
WO2017143546A1 (en) * 2016-02-24 2017-08-31 战炜 Charging system and charging method
CN105807882B (en) * 2016-02-25 2019-02-15 努比亚技术有限公司 Adaptive charging method and intelligent terminal based on fingerprint
WO2017185583A1 (en) * 2016-04-25 2017-11-02 上海墨百意信息科技有限公司 Method and device for detecting wireless charging receiving device being placed on wireless charging transmitter
CN106026231A (en) * 2016-05-30 2016-10-12 广东欧珀移动通信有限公司 Wireless charging method and device
CN106026231B (en) * 2016-05-30 2019-12-10 Oppo广东移动通信有限公司 Wireless charging method and device
CN106026234A (en) * 2016-06-06 2016-10-12 薛寿贞 Wireless charging system
CN106026320A (en) * 2016-06-22 2016-10-12 广州致远电子股份有限公司 Data acquisition equipment and power supply device thereof, and power supply method
WO2018018826A1 (en) * 2016-07-29 2018-02-01 施京京 Wireless connection device for mobile apparatus
CN106532823A (en) * 2016-11-16 2017-03-22 国网山东省电力公司青岛供电公司 Intelligent charging method and device and device selection method
CN106532989A (en) * 2016-12-26 2017-03-22 宇龙计算机通信科技(深圳)有限公司 Wireless charging control circuit, wireless charging control method and electronic device
CN107171419A (en) * 2017-05-31 2017-09-15 上海电力学院 Wireless electric energy transmission device based on Bluetooth control
CN107769332A (en) * 2017-11-22 2018-03-06 联想(北京)有限公司 Rechargeable devices and its charging method, charging device

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Application publication date: 20131016