CN110266120B - Method for improving wireless charging communication reliability - Google Patents
Method for improving wireless charging communication reliability Download PDFInfo
- Publication number
- CN110266120B CN110266120B CN201910674259.7A CN201910674259A CN110266120B CN 110266120 B CN110266120 B CN 110266120B CN 201910674259 A CN201910674259 A CN 201910674259A CN 110266120 B CN110266120 B CN 110266120B
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- wireless charging
- working frequency
- transmitting
- current
- frequency
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- 238000004891 communication Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 20
- OIGNJSKKLXVSLS-VWUMJDOOSA-N prednisolone Chemical compound O=C1C=C[C@]2(C)[C@H]3[C@@H](O)C[C@](C)([C@@](CC4)(O)C(=O)CO)[C@@H]4[C@@H]3CCC2=C1 OIGNJSKKLXVSLS-VWUMJDOOSA-N 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
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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
- H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a method for improving the reliability of wireless charging communication, which comprises the following steps: s1, respectively detecting current and voltage on a transmitting coil, and calculating normal working power Pn on the transmitting coil; s2, when the wireless charging receiving end detects decoding errors, the current and the voltage on the current transmitting coil are detected through the current detection unit and the voltage detection unit, the current working power Pn+1 on the transmitting coil is calculated, and compared with the frequency Fn in normal operation, the working frequency needs to be reduced or the working frequency needs to be increasedAnd the wireless charging transmitting terminal correspondingly adjusts the working frequency to Fn+/-delta F. In the wireless charging process, when communication errors occur and decoding errors occur, the working frequency of the wireless charging resonant circuit is adjusted by detecting and calculating the power change of the transmitting end, so that normal communication can be effectively restored in time, and the charging interruption phenomenon in the charging process is improved.
Description
Technical Field
The invention relates to the technical field of wireless charging, in particular to a method for improving the reliability of wireless charging communication.
Background
As shown in fig. 1, which is a wireless charging schematic diagram in the prior art, according to the standard of the wireless charging Qi protocol, when in wireless charging, the working frequency on the resonant capacitor and the coil is 87K-205KHz, and the communication content is modulated into the resonant network for transmission in an ASK mode; the transmitting end samples the voltage and the current of the resonant network to demodulate and decode the modulated communication signal; then, according to the communication request sent by the receiving end, the frequency and the duty ratio of the resonant network are correspondingly adjusted, if the load current of the receiving end suddenly changes or the resonant network is interfered, the voltage and the current on the resonant network are changed, the voltage and the current sampled by the transmitting end may be in error, correct signals are demodulated, and communication errors are caused; if the communication continues to be in error within 1.8s, without recovery, the normal state of charge is exited, resulting in a disconnection of the charge, as required by the Qi protocol.
Disclosure of Invention
Based on the defects of the prior art, the invention provides a method for improving the reliability of wireless charging communication, and in the charging process, the correct communication connection is reestablished by detecting the error condition of communication abnormality, automatically adjusting the working frequency of a transmitting signal and adjusting the voltage and current of a receiving end.
The technical scheme of the invention is as follows:
a method of improving reliability of wireless charging communications, the method comprising:
s1, detecting current and voltage on a transmitting coil, and calculating normal working power Pn on the transmitting coil;
s2, when the wireless charging receiving end detects decoding errors, detecting current and voltage on a current transmitting coil, calculating current working power Pn+1 on the transmitting coil, if Pn+1 is larger than Pn, reducing transmitting frequency at the wireless charging transmitting end, if Pn+1 is smaller than Pn, increasing transmitting frequency at the wireless charging transmitting end, and compared with frequency Fn in normal operation, reducing working frequency or increasing working frequencyThe KHz wireless charging transmitting terminal correspondingly adjusts the working frequency to Fn+/-delta F.
Further, in S2, when fn+Δf is greater than the maximum operating frequency Fmax, the operating frequency is set to Fmax.
Further, in S2, when fn+Δf is smaller than the minimum operating frequency Fmin, the operating frequency is set to Fmin.
Further, after the wireless charging transmitting terminal adjusts the working frequency, namely after the power is changed, setting a waiting time T, if the communication is not recovered within the set waiting time T, and the information after the decoding is not received or received is still in error, continuing to detect the power of the transmitting coil, and changing the working frequency according to the power;
if the communication is recovered to be normal, the current working frequency is used for continuing to charge, and a normal charging flow is entered.
The beneficial effects of the invention are as follows: in the wireless charging process, when communication errors occur and decoding errors occur, the working frequency of the wireless charging resonant circuit is adjusted by detecting and calculating the power change of the transmitting end, so that normal communication can be effectively restored in time, and the charging interruption phenomenon in the charging process is improved.
Drawings
FIG. 1 is a schematic diagram of a prior art structure;
fig. 2 is a flow chart of the method of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 2, a method for improving reliability of wireless charging communication, the method comprising:
s1, respectively detecting current and voltage on a transmitting coil through a current detection unit and a voltage detection unit which are arranged at a wireless charging transmitting end, and calculating normal working power Pn on the transmitting coil;
s2, when the wireless charging receiving end detects decoding errors, detecting current and voltage on the current transmitting coil through the current detection unit and the voltage detection unit, calculating current working power Pn+1 on the transmitting coil, if Pn+1 is larger than Pn, reducing transmitting frequency at the wireless charging transmitting end, if Pn+1 is smaller than Pn, increasing transmitting frequency at the wireless charging transmitting end, and comparing the working frequency required to be reduced or the working frequency required to be increased with frequency Fn in normal operationAnd the wireless charging transmitting terminal correspondingly adjusts the working frequency to Fn+/-delta F.
In S2, when fn+Δf is greater than the maximum operating frequency Fmax, the operating frequency is set to Fmax.
In S2, when fn++ Δf is smaller than the minimum operating frequency Fmin, the operating frequency is set to Fmin.
After the power adjustment is changed, a waiting time T needs to be set,
if the communication is not recovered within the set waiting time T, the information which is not received or is decoded is still in error, the power of the transmitting coil is continuously detected, and the working frequency is changed according to the power;
if the communication is recovered to be normal, the current working frequency is used for continuing to charge, and a normal charging flow is entered.
According to the method for improving the reliability of wireless charging communication, when communication errors occur and decoding errors occur in the wireless charging process, the working frequency of the wireless charging resonant circuit is adjusted by detecting and calculating the power change of the transmitting end, so that normal communication can be effectively restored in time, and the charging interruption phenomenon in the charging process is improved.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (1)
1. A method of improving reliability of wireless charging communications, the method comprising:
s1, detecting current and voltage on a transmitting coil, and calculating normal working power Pn on the transmitting coil;
s2, when the wireless charging receiving end detects decoding errors, detecting current and voltage on a current transmitting coil, calculating current working power Pn+1 on the transmitting coil, if Pn+1 is larger than Pn, reducing transmitting frequency at the wireless charging transmitting end, if Pn+1 is smaller than Pn, increasing transmitting frequency at the wireless charging transmitting end, and compared with frequency Fn in normal operation, reducing working frequency or increasing working frequencyKHz wireless charging transmitting terminalCorrespondingly adjusting the working frequency to Fn+/-delta F;
s2, when Fn+DeltaF is larger than the maximum working frequency Fmax, setting the working frequency to Fmax;
s2, when Fn+delta F is smaller than the minimum working frequency Fmin, setting the working frequency to Fmin;
after the wireless charging transmitting terminal adjusts the working frequency, namely after the power is changed, setting a waiting time T, if the communication is not recovered within the set waiting time T, and the information after the decoding is not received or received is still in error, continuously detecting the power of the transmitting coil, and changing the working frequency according to the power;
if the communication is recovered to be normal, the current working frequency is used for continuing to charge, and a normal charging flow is entered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910674259.7A CN110266120B (en) | 2019-07-25 | 2019-07-25 | Method for improving wireless charging communication reliability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910674259.7A CN110266120B (en) | 2019-07-25 | 2019-07-25 | Method for improving wireless charging communication reliability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110266120A CN110266120A (en) | 2019-09-20 |
| CN110266120B true CN110266120B (en) | 2024-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910674259.7A Active CN110266120B (en) | 2019-07-25 | 2019-07-25 | Method for improving wireless charging communication reliability |
Country Status (1)
| Country | Link |
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| CN (1) | CN110266120B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112217296B (en) * | 2020-09-14 | 2022-04-29 | 纳恩博（天津）科技有限公司 | Wireless charging method, device, equipment and computer storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130117405A (en) * | 2012-04-17 | 2013-10-28 | 삼성전자주식회사 | Method and apparatus for wireless power transmission and apparatus for wireless power reception |
| CN104113098A (en) * | 2013-08-04 | 2014-10-22 | 深圳市兴龙辉科技有限公司 | Wireless charging topological structure and frequency sweep algorithm |
| CN107112808A (en) * | 2014-09-16 | 2017-08-29 | 皇家飞利浦有限公司 | Wireless induction power transmission |
| CN109217494A (en) * | 2017-07-08 | 2019-01-15 | 厦门新页科技有限公司 | A kind of solution mobile phone wireless fills disconnected system when charging |
| CN109510288A (en) * | 2018-12-18 | 2019-03-22 | 成都瑞德星无线技术有限公司 | A kind of one-to-many wireless charging system and control method of power adaptive allotment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI519109B (en) * | 2013-02-27 | 2016-01-21 | 凌通科技股份有限公司 | Circuit for signal decoding in rfid or wireless power charging |
-
2019
- 2019-07-25 CN CN201910674259.7A patent/CN110266120B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130117405A (en) * | 2012-04-17 | 2013-10-28 | 삼성전자주식회사 | Method and apparatus for wireless power transmission and apparatus for wireless power reception |
| CN104113098A (en) * | 2013-08-04 | 2014-10-22 | 深圳市兴龙辉科技有限公司 | Wireless charging topological structure and frequency sweep algorithm |
| CN107112808A (en) * | 2014-09-16 | 2017-08-29 | 皇家飞利浦有限公司 | Wireless induction power transmission |
| CN109217494A (en) * | 2017-07-08 | 2019-01-15 | 厦门新页科技有限公司 | A kind of solution mobile phone wireless fills disconnected system when charging |
| CN109510288A (en) * | 2018-12-18 | 2019-03-22 | 成都瑞德星无线技术有限公司 | A kind of one-to-many wireless charging system and control method of power adaptive allotment |
Non-Patent Citations (1)
| Title |
|---|
| Qi标准无线充电功能的手机实现;潘鑫;《中国优秀硕士学位论文全文数据库》;20160415(第4期);第1-62页 * |
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| CN110266120A (en) | 2019-09-20 |
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