CN106571691A - Method for improving radiation performance of wireless charger - Google Patents
Method for improving radiation performance of wireless charger Download PDFInfo
- Publication number
- CN106571691A CN106571691A CN201610981774.6A CN201610981774A CN106571691A CN 106571691 A CN106571691 A CN 106571691A CN 201610981774 A CN201610981774 A CN 201610981774A CN 106571691 A CN106571691 A CN 106571691A
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- Prior art keywords
- wireless charger
- mobile phone
- coil
- interference
- radiation
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- 230000005855 radiation Effects 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000006243 chemical reaction Methods 0.000 claims abstract description 4
- 230000005670 electromagnetic radiation Effects 0.000 claims abstract description 4
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 claims abstract description 4
- 230000005611 electricity Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 210000004247 hand Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
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- H02J7/025—
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a method for improving a radiation performance of a wireless charger. The method comprises: (1), installation positions of a transmitter coil and a drive circuit of a wireless charger are adjusted and thus the transmitter coil and the drive circuit are arranged at the two ends of the wireless charger and are connected by a coil extension wire, so that the interference on a mobile phone arranged at the transmitter coil by radiation generated by the drive circuit can be avoided; (2), a radiation interface of a receiving coil is reduced and an inductance coefficient error range of the receiving coil of the wireless charger is controlled to be +/-0.2UH, so that the energy conversion efficiency between the transmitter coil and the receiving coil at the wireless charger can be enhanced and the interference on the mobile phone by electromagnetic radiation caused by the receiving coil can be reduced; and (3), power radiation interference is reduced; a magnetic ring is arranged a power line of the wireless charger and a common-mode choke is connected in series to a power part of a PCB inside the wireless charger, so that attenuation of the common-mode currents is realized and a filtering objective is achieved and thus the interference on the mobile phone by the common-mode signal radiated from the power supply can be reduced.
Description
Technical field
The present invention relates to wireless charger field, more particularly to a kind of method for improving wireless charger radiance.
Background technology
The wireless charging application of mobile phone is the pith of wireless charging technical field, and current many mobile phone vendor commercial cities are being opened
Wireless charging function is sent out, as mobile phone is used as a kind of mobile communications tool, therefore corresponding wireless charger needs to consider opponent
The electronic components of mobile phone, especially than the mobile phone brand manufacturer such as Fructus Mali pumilae of higher-end, are had by the interference problem of machine communication signal
Higher requirement, and formulated its distinctive MFI standard.In industry, common practice is constantly modification accessory circuit at present, but
The improvement cycle is long, DeGrain；Another kind of way is rectified and improved by various shielding means, DeGrain and this mode is not
Possesses production.
The content of the invention
To solve the above problems, the present invention provides a kind of method for improving wireless charger radiance, including:
1）The transmitting coil of adjustment wireless charger and the installation site of drive circuit, make transmitting coil and drive circuit difference position
In the two ends of wireless charger, and connected by single line circle extended line, it is to avoid the radiation that drive circuit is produced is opposite to transmitting
Mobile phone on coil is interfered;
2）Reduce receiving coil radiation interference, by the control of the inductance coefficent range of error of wireless charger receiving coil ±
0.2UH, so as to strengthen the energy conversion efficiency on wireless charger between transmitting coil and receiving coil, reduces
Interference of the raw electromagnetic radiation to mobile phone；
3）Power supply radiation interference is reduced, magnet ring is added on the power line of wireless charger, the electricity on pcb board in wireless charger
The upper common mode inductance of source part string, with this attenuation common-mode electric current, reaches filtering purpose, so as to reduce the common mode radiateing on power supply
Interference of the signal to mobile phone.
Preferably, being additionally included on wireless charger increases ground antenna, carries out characteristics match with antenna for mobile phone, to ensure handss
Machine keeps good signal when charging.
Preferably, it is 5 ~ 7cm that the coil extends line length.
The present invention is reduced by being improved to wireless charger drive circuit, receiving coil and power pack respectively
Which is radiated the interference signal of mobile phone, and causes wireless charger and antenna for mobile phone characteristics match by increasing ground antenna, is allowed to
The communication signal of the mobile phone under charged state is not affected, and then improves the radiance of wireless charger product.
Specific embodiment
With reference to specific embodiment, the invention will be further described.
First, the installation site of the transmitting coil with drive circuit of wireless charger is adjusted, transmitting coil is made and is driven electricity
Road is respectively positioned at the two ends of wireless charger, and is connected by the coil extended line of a 7cm, so as to avoid drive circuit from producing
The mobile phone that is opposite on transmitting coil of radiation interfere;Then by the inductance coefficent error of wireless charger receiving coil
Scope control, reduces so as to strengthen the energy conversion efficiency on wireless charger between transmitting coil and receiving coil in ± 0.2UH
Interference of the electromagnetic radiation produced on receiving coil to mobile phone, and increase ground antenna on wireless charger, enter with antenna for mobile phone
Row characteristics match, to ensure that mobile phone keeps good signal when charging；Finally, the additional magnetic on the power line of wireless charger
Ring, the common mode inductance on power pack string on pcb board in wireless charger, with this attenuation common-mode electric current, reach filtering purpose, from
And reduce interference of the common-mode signal radiateing on power supply to mobile phone.
Above content is only presently preferred embodiments of the present invention, for one of ordinary skill in the art, according to the present invention's
Thought, will change in specific embodiments and applications, and this specification content is should not be construed as to the present invention
Restriction.
Claims (3)
1. a kind of method for improving wireless charger radiance, including:
1）The transmitting coil of adjustment wireless charger and the installation site of drive circuit, make transmitting coil and drive circuit difference position
In the two ends of wireless charger, and connected by single line circle extended line, it is to avoid the radiation that drive circuit is produced is opposite to transmitting
Mobile phone on coil is interfered;
2）Reduce receiving coil radiation interference, by the control of the inductance coefficent range of error of wireless charger receiving coil ±
0.2UH, so as to strengthen the energy conversion efficiency on wireless charger between transmitting coil and receiving coil, reduces
Interference of the raw electromagnetic radiation to mobile phone；
3）Power supply radiation interference is reduced, magnet ring is added on the power line of wireless charger, the electricity on pcb board in wireless charger
The upper common mode inductance of source part string, with this attenuation common-mode electric current, reaches filtering purpose, so as to reduce the common mode radiateing on power supply
Interference of the signal to mobile phone.
2. according to the method for improving wireless charger radiance described in claim 1, it is characterised in that：It is additionally included in wireless charging
Increase ground antenna on electrical equipment, characteristics match is carried out with antenna for mobile phone, to ensure that mobile phone keeps good signal when charging.
3. according to the method for improving wireless charger radiance described in claim 1, it is characterised in that：The coil extended line
Length is 5 ~ 7cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610981774.6A CN106571691A (en) | 2016-11-09 | 2016-11-09 | Method for improving radiation performance of wireless charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610981774.6A CN106571691A (en) | 2016-11-09 | 2016-11-09 | Method for improving radiation performance of wireless charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106571691A true CN106571691A (en) | 2017-04-19 |
Family
ID=58540382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610981774.6A Pending CN106571691A (en) | 2016-11-09 | 2016-11-09 | Method for improving radiation performance of wireless charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106571691A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715781A (en) * | 2014-01-06 | 2014-04-09 | 邢益涛 | Novel wireless charging transmission device |
| CN204992720U (en) * | 2015-07-07 | 2016-01-20 | 昆明理工大学 | Wireless charging device |
-
2016
- 2016-11-09 CN CN201610981774.6A patent/CN106571691A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715781A (en) * | 2014-01-06 | 2014-04-09 | 邢益涛 | Novel wireless charging transmission device |
| CN204992720U (en) * | 2015-07-07 | 2016-01-20 | 昆明理工大学 | Wireless charging device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170419 |