CN111668886A - Method and device for sharing antenna for wireless charging and NFC communication - Google Patents
Method and device for sharing antenna for wireless charging and NFC communication Download PDFInfo
- Publication number
- CN111668886A CN111668886A CN201910167063.9A CN201910167063A CN111668886A CN 111668886 A CN111668886 A CN 111668886A CN 201910167063 A CN201910167063 A CN 201910167063A CN 111668886 A CN111668886 A CN 111668886A
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- wireless charging
- magnetic induction
- antenna
- nfc communication
- induction switches
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- 238000004891 communication Methods 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000006698 induction Effects 0.000 claims abstract description 64
- 230000001939 inductive effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
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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
- H02J50/20—Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
- H04B5/72—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for local intradevice communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
- H04B5/79—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for data transfer in combination with power transfer
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Near-Field Transmission Systems (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a method and a device for sharing an antenna for wireless charging and NFC communication, wherein the device comprises a coil antenna, two magnetic induction switches, an NFC communication module, a wireless charging module and a rechargeable battery, two ends of the coil antenna are respectively connected to input ends of the two magnetic induction switches, normally closed output ends of the two magnetic induction switches are respectively connected to an antenna interface of the NFC communication module, normally open output ends of the two magnetic induction switches are respectively connected to the antenna interface of the wireless charging module, a positive electrode of an output end of the wireless charging module is connected to a positive electrode of the rechargeable battery, and a negative electrode of the output end of the wireless charging module is connected to a negative electrode of the rechargeable battery. According to the scheme of the invention, the two magnetic induction switches are used for inducing the magnet on the external wireless charging seat, so that the antenna function switching of wireless charging and NFC communication is realized.
Description
Technical Field
The invention relates to the technical field of antennas, in particular to a method and a device for sharing an antenna for wireless charging and NFC communication.
Background
In recent years, with the development of near field wireless communication technology, wireless charging technology and NFC communication technology have been rapidly developed, and there are also some smart phones which have wireless charging function and NFC communication function in the same device, but at present, such devices have wireless charging function and NFC communication function at the same time, and their wireless charging and NFC communication use separate antennas, which leads to an increase in cost.
At present, a technology of sharing one antenna for wireless charging and NFC communication also appears, and patent document CN201620170996.5, application number "a system capable of wireless charging and NFC communication", proposes a method of controlling and switching antenna connection through an MCU controller/a single chip to realize antenna sharing, where the method needs to add an additional MCU controller/a single chip, and needs to perform a lot of software development work while increasing cost; patent document CN107331951A, "antenna combining NFC and wireless charging and control method thereof" proposes a method of switching antenna switching by duplexer switching frequency to share an antenna, but does not disclose a specific duplexer structure and a working principle and method of realizing switching frequency by a duplexer.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a method and a device for sharing an antenna for wireless charging and NFC communication, which can automatically realize the switching of the antenna function according to the use scene under the condition of no additional controller control, realize the sharing of one antenna for wireless charging and NFC communication, and have the characteristics of simple structure, low cost and reliable performance.
In order to realize the design purpose of the invention, the following technical scheme is adopted to realize the following steps:
the invention provides a device for sharing an antenna for wireless charging and NFC communication, which comprises a coil antenna, two magnetic induction switches, an NFC communication module, a wireless charging module and a rechargeable battery, wherein the coil antenna is arranged on the antenna;
two ends of the coil antenna are connected with the input ends of the two magnetic induction switches;
the normally closed output ends of the two magnetic induction switches are respectively connected to a communication antenna interface of the NFC communication module;
the normally open output ends of the two magnetic induction switches are respectively connected to a charging antenna interface of the wireless charging module;
the positive pole of the output end of the wireless charging module is connected to the positive pole of the rechargeable battery, and the negative pole of the output end of the wireless charging module is connected to the negative pole of the rechargeable battery.
The principle and the structure of the two magnetic induction switches are completely the same, each magnetic induction switch is provided with an input end, a normally open output end and a normally closed output end, the input end is connected with the normally closed output end when no external additional magnetic field exists, and the input end is connected with the normally open output end when an external additional magnetic field exists; the external additional magnetic field refers to a magnetic field generated by other magnetic objects than the earth's magnetic field.
The invention provides a method for sharing an antenna for wireless charging and NFC communication, which has the following working principle:
when the NFC communication module is used for NFC communication, no external additional magnetic field acts on the two magnetic induction switches, and the input ends of the two magnetic induction switches are kept connected with the normally closed output end, so that the two ends of the coil antenna are respectively connected to a communication antenna interface of the NFC communication module through the magnetic induction switches, and the coil antenna is used for NFC communication;
when carrying out wireless charging, the magnetic field that magnet produced in the wireless charging seat of outside is sensed by two magnetic induction switches, and the input of two magnetic induction switches receives external magnetic field magnetic force to influence for the magnetic induction switch input is switched to and is connected with normally open the output, and the both ends of coil antenna are connected to the wireless charging module's of charging antenna interface through magnetic induction switch respectively this moment, and the coil antenna is used for wireless charging function this moment.
The invention has the beneficial effects that: the magnetic field of the magnet on the external wireless charging seat is sensed by only two magnetic induction switches without the control of an additional MCU (micro control unit) processor, so that the complete public automatic switching of the wireless charging and NFC (near field communication) communication of the same antenna can be realized, and the wireless charging device has the characteristics of simple structure, low cost and reliable performance.
Drawings
Fig. 1 is a schematic diagram of a specific implementation manner of the technical solution of the present invention when performing NFC communication;
fig. 2 is a schematic diagram of a wireless communication according to the present invention.
Detailed Description
In order to make the technical purpose, the adopted technical scheme and the implementation effect of the invention clearer, the invention is further described in detail with reference to the attached drawings:
fig. 1 is a schematic diagram of a specific implementation manner of the technical solution of the present invention when performing NFC communication,
in the figure, S1 — coil antenna; s2 and S3-magnetic induction switch; s4, an NFC communication module; s5, a wireless charging module; s6 — rechargeable battery; S201-S2 input end of the magnetic induction switch; s202- -S2 magnetic induction switch normally closed output end; s203- -S2 normally open output end of magnetic induction switch; S301-S3 magnetic induction switch input end; S302-S3 normally closed output ends of the magnetic induction switches; S303-S3 normally open output end of the magnetic induction switch;
fig. 2 is a schematic diagram of an embodiment of the present invention in wireless communication, in which S1-coil antenna; s2 and S3-magnetic induction switch; s4, an NFC communication module; s5, a wireless charging module; s6 — rechargeable battery; s7, external wireless charging; S201-S2 input end of the magnetic induction switch; s202- -S2 magnetic induction switch normally closed output end; s203- -S2 normally open output end of magnetic induction switch; S301-S3 magnetic induction switch input end; S302-S3 normally closed output ends of the magnetic induction switches; S303-S3 normally open output end of the magnetic induction switch; s701, a magnet;
the invention provides a device for sharing an antenna for wireless charging and NFC communication, which comprises a coil antenna S1, two magnetic induction switches S2 and S3, an NFC communication module S4, a wireless charging module S5 and a rechargeable battery S6;
one end of the coil antenna S1 is connected with the input end S201 of the magnetic induction switch S2, and the other end of the coil antenna S1 is connected with the input end S301 of the magnetic induction switch S3; the normally closed output end S202 of the magnetic induction switch S2 and the normally closed output end S302 of the magnetic induction switch S3 are connected with two communication antenna interfaces of the NFC communication module S4; the normally open output end S203 of the magnetic induction switch S2 and the normally open output end S303 of the magnetic induction switch S3 are connected with two charging antenna interfaces of the wireless charging module S5; the positive electrode of the output end of the wireless charging module S5 is connected to the positive electrode of the rechargeable battery S6, and the negative electrode of the output end of the wireless charging module S5 is connected to the negative electrode of the rechargeable battery S6;
the principles and structures of the magnetic induction switches S2 and S3 are completely the same, each magnetic induction switch has an input terminal, a normally open output terminal and a normally closed output terminal, the input terminal of the magnetic induction switch is kept connected to the normally closed output terminal when no external additional magnetic field exists, and the input terminal of the magnetic induction switch is kept connected to the normally open output terminal when an external additional magnetic field exists, where the external additional magnetic field refers to a magnetic field generated by other magnetic objects except the earth magnetic field.
The technical scheme of the invention has the following working principle:
when the NFC communication is used, no external additional magnetic field acts on the magnetic induction switches S2 and S3, the input end S201 of the magnetic induction switch S2 is connected with the normally closed output end S202, the input end S301 of the magnetic induction switch S3 is connected with the normally closed output end S302, so that two ends of the coil antenna S1 are connected to two communication antenna interfaces of the NFC communication module S4 through the magnetic induction switches S2 and S3 respectively, and the coil antenna S1 is used for the NFC communication function;
when wireless charging is performed, the magnetic field generated by the magnet S701 in the external wireless charging stand S7 acts on the magnetic induction switches S2 and S3, the input ends of the magnetic induction switches S2 and S3 are influenced by the magnetic force of the external magnetic field, the input end S201 of the magnetic induction switch S2 is connected with the normally open output end S203, and the input end S301 of the magnetic induction switch S3 is connected with the normally open output end S303, so that the two ends of the coil antenna S1 are respectively connected to the two charging antenna interfaces of the wireless charging module S5 through the magnetic induction switches S2 and S3, and at this time, the coil antenna S1 is used for the wireless charging function.
Claims (3)
1. A device for sharing an antenna for wireless charging and NFC communication is characterized in that,
the wireless charging system comprises a coil antenna, two magnetic induction switches, an NFC communication module, a wireless charging module and a rechargeable battery;
two ends of the coil antenna are connected with the input ends of the two magnetic induction switches;
the normally closed output ends of the two magnetic induction switches are respectively connected to a communication antenna interface of the NFC communication module;
the normally open output ends of the two magnetic induction switches are respectively connected to a charging antenna interface of the wireless charging module;
the positive pole of the output end of the wireless charging module is connected to the positive pole of the rechargeable battery, and the negative pole of the output end of the wireless charging module is connected to the negative pole of the rechargeable battery.
2. The apparatus of claim 1,
the principle and the structure of the two magnetic induction switches are completely the same, each magnetic induction switch is provided with an input end, a normally open output end and a normally closed output end, the input end is connected with the normally closed output end when no external additional magnetic field exists, and the input end is connected with the normally open output end when an external additional magnetic field exists; the external additional magnetic field refers to a magnetic field generated by other magnetic objects than the earth's magnetic field.
3. A method for sharing an antenna for wireless charging and NFC communication,
when the NFC communication is used and no external additional magnetic field is applied, the input ends of the two magnetic induction switches are connected with the normally closed output end, the two ends of the coil antenna are connected to a communication antenna interface of the NFC communication module through the two magnetic induction switches, and the coil antenna is used for the NFC communication function;
when carrying out wireless charging, two magnetic induction switches sense the magnetic field that magnet produced in the outside wireless charging seat, two magnetic induction switches's input is switched into and is connected with normally open output, the both ends of coil antenna are connected to the wireless module that charges antenna interface that charges through two magnetic induction switches, the coil antenna is used for the wireless function of charging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910167063.9A CN111668886A (en) | 2019-03-06 | 2019-03-06 | Method and device for sharing antenna for wireless charging and NFC communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910167063.9A CN111668886A (en) | 2019-03-06 | 2019-03-06 | Method and device for sharing antenna for wireless charging and NFC communication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111668886A true CN111668886A (en) | 2020-09-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910167063.9A Pending CN111668886A (en) | 2019-03-06 | 2019-03-06 | Method and device for sharing antenna for wireless charging and NFC communication |
Country Status (1)
| Country | Link |
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| CN (1) | CN111668886A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111200319A (en) * | 2020-01-16 | 2020-05-26 | 维沃移动通信有限公司 | Electronic device |
| CN112259957A (en) * | 2020-10-19 | 2021-01-22 | 北京六维畅联科技有限公司 | Broadband helmet antenna and power generation device comprising same |
-
2019
- 2019-03-06 CN CN201910167063.9A patent/CN111668886A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111200319A (en) * | 2020-01-16 | 2020-05-26 | 维沃移动通信有限公司 | Electronic device |
| CN112259957A (en) * | 2020-10-19 | 2021-01-22 | 北京六维畅联科技有限公司 | Broadband helmet antenna and power generation device comprising same |
| CN112259957B (en) * | 2020-10-19 | 2024-03-26 | 北京六维畅联科技有限公司 | Broadband helmet antenna and power generation device comprising same |
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