CN209642665U - A kind of communication device of power interface - Google Patents
A kind of communication device of power interface Download PDFInfo
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- CN209642665U CN209642665U CN201822182835.XU CN201822182835U CN209642665U CN 209642665 U CN209642665 U CN 209642665U CN 201822182835 U CN201822182835 U CN 201822182835U CN 209642665 U CN209642665 U CN 209642665U
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Abstract
The utility model discloses a kind of communication devices of power interface, it includes the slave communication module of principal communication module Yu required communication, it is connected between above-mentioned master and slave communication module by power supply line, DC power supply is to power from communication module by principal communication module, modulated signal is modulated in DC power signal by principal communication module, modulated signal is decoded from communication module from above-mentioned DC power signal, realize the transmission of modulated signal, principal communication module is realized by detection electric current to the status monitoring from communication module.By being communicated from communication module power supply line, calibration signal is modulated in power supply signal, the interface resource from communication module MCU is reduced, the communication information of user's transmission can also be obtained without adding additional communication interface.Needing to carry out parameter correction from communication module, user increases convenience without tearing the i.e. transmittable control information of machine open for wireless charger correction.
Description
Technical field
This application involves signal communication fields, and in particular to a kind of communication device of power interface.
Background technique
With the continuous development of electronic technology, various electronic products enter in our life, we become
Increasingly it be unable to do without electronic product.But our various electronic products carry out not being convenience so when wired charging, and
And various cables lead to the space for occupying many and there is also certain safety for some powerful wired chargings
Risk.In life many such cases result in people it is urgent it is hoped that there will be a kind of safety, it is cheap and effectively and convenient
Charging modes charge to electronic equipment.Therefore, wireless charging has been expedited the emergence of, wireless charging technology is flourishing.
Mainstream wireless charger is all based on magnetic coupling wireless charging technology on the market at present, and principle is primary coil production
Magnetisation field is coupled in secondary coil, secondary coil induct alternating current by rectifying and wave-filtering output direct current be electrical appliance power.
However also there is security risk in this technology, when placing metallic foreign body between primary and secondary coil, metallic foreign body is because of whirlpool
It flows and generates heat, to cause the security risks such as fire, therefore foreign bodies detection function becomes of crucial importance in wireless charging technology.
According to Qi wireless charging standard, one of foreign matter detecting method is to judge transmitting terminal by detection power loss and connect
It is no with the presence of foreign matter, power loss value between receiving end are as follows:
PLoss=PPT-PPR
Wherein PLossFor metallic foreign body thermal losses power, PPTFor transmitting terminal transmission power, value is that transmitting terminal power supply is only defeated
Enter power and subtracts transmitting terminal no-load loss power, PPRPower is received for receiving end.Therefore, in order to accurate judgement transmitting terminal with connect
It whether there is foreign matter between receiving end, then need accurately to measure transmitting terminal actual emission power.In actual circuit, same circuit cloth
Its electric property is also different between office and same component parameter, therefore each transmitting terminal no-load loss is not yet
Together, then wireless charging transmitter needs to be corrected its no-load loss parameter when leaving the factory.
In existing wireless charger parameter correcting method, method is mostly that one is added in wireless charger circuit
Pin interface obtains user's correction instruction, and user sends correction instruction to MCU by the interface, charger starts to carry out school
Just.But the above method requires MCU inside wireless charger and increases interface to receive user's correction instruction, this, which does not only take up, fills
MCU pin resource inside electric appliance also needs addition user to calibrate interaction circuit, and which increase wireless charger component costs, and
And more inconvenience is calibrated after wireless charger product export fills shell.
Summary of the invention
Therefore above-mentioned technical problem, the utility model for provided a kind of communication device applied to power interface and
Communication means.Specifically adopt the technical scheme that
A kind of communication device of power interface comprising the slave communication module of principal communication module and required communication, above-mentioned master,
It is connected between communication module by power supply line, DC power supply is to power from communication module by principal communication module, principal communication mould
Modulated signal is modulated in DC power signal by block, decodes modulated signal from communication module from above-mentioned DC power signal,
Realize the transmission of modulated signal.
Further, principal communication module is realized by detection electric current to the status monitoring from communication module.
It further, is wireless charging transmitting terminal from communication module.
Further, principal communication module includes MCU1, receives the input information of user's interactive interface, and input information is certain frequency
The low and high level encoded signal of rate；MCU1 sends above-mentioned input information, and above-mentioned low and high level encoded signal control is connect with MCU1
Mos pipe on, off, thus will input modulates information into DC power signal.
Further, MCU1 detects current value from when the increase of standby current value in principal communication module, then it represents that from communication mould
Block returns to principal communication module and starts control information successful reception confirmation message；When principal communication module detect current value be reduced to
Electromechanical flow valuve, then principal communication module receives correction successful information, and MCU1 then passes through user's interactive interface and informs that user is corrected into
Function.
It further, include the first DC interface and the 2nd DC interface in principal communication module, the first DC interface connects DC power supply,
2nd DC interface connects the third power interface DC interface from communication module；Wherein, the first DC interface, for interactive interface with
MCU1 connection, MCU1 receive the input information of user's interactive interface, and above-mentioned input information is sent to N-type connected to it
Mos pipe Q2 grid, Q2 grounded drain, the one end Q2 source electrode connecting resistance R2, the resistance R2 other end distinguish the one end connecting resistance R1 and resistance
The one end R3, another termination p-type mos pipe Q1 grid of resistance R3, the first DC interface of another termination of resistance R1, the source electrode of Q1 and two poles
The cathode of pipe D1, the anode of diode D1, Q1 drain electrode connect the 2nd DC interface.
Further, input voltage signal is passed to from the input voltage detection circuit of communication module by the 3rd DC interface
MCU2, MCU2 decode signal by carrying out sampling to input voltage signal, when MCU2 judges to receive signal and executes.
Further, the reception signal is when starting correction signal, and MCU2 makes coil current by control inverter
Maximum current value is increased from zero to, MCU2 records the no-load loss under each current value, to complete primary parameter correction, from logical
Letter module returns to standby mode.
Further, the first DC interface and the equal parallel filtering capacitor of the 2nd DC interface.
Compared with prior art, the beneficial technical effect of the utility model are as follows:
Calibration signal is modulated to power supply signal by being communicated from communication module power supply line by the utility model
In, reduce the interface resource from communication module MCU, makes be not necessarily to add additional communication in addition to power interface from communication module
Interface can also obtain the communication information of user's transmission.Needing to carry out parameter correction from communication module, user is without tearing machine open
Control information is sent, increases convenience for wireless charger correction, while without increasing additional corrections life from communication module
It enables and receives circuit, reduce component number, reduce charger cost；It is defeated due to having in all wireless charging transmitting terminals
Enter voltage detecting circuit, therefore wireless charging transmitting terminal can obtain the calibration life of user without adding additional decoding circuit
It enables, while by being communicated in power supply signal, making wireless charger that can also very easily carry out calibration after filling shell logical
Letter, while having saved charger internal MCU pin resource.Wireless charger need to only apply the original circuit structure of its circuit can
The signal sent to user is decoded, and without additionally increasing decoding circuit, simplifies wireless charger circuit structure.Separately
Outside, it may be implemented in power supply line by communication device described in the utility model and communication means and transmit multiple information, information lattice
Formula and content are configured according to user's needs and designed principal communication module and from communication module MCU resource.
The utility model achieves that much information transmits by a power supply line, and information format can be according to user voluntarily
Setting, makes to communicate more flexible；
User can in principal communication module described in the utility model and from distinctive communication protocol is arranged between communication module,
To keep communication more safe and reliable.
Detailed description of the invention
Fig. 1 is the structure chart of the utility model.
Fig. 2 is the circuit diagram of main communication module.
Fig. 3 is the circuit diagram from communication module (wireless charging transmitting terminal).
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
Fig. 1 is the communication device for the power interface that the utility model is, as shown in Figure 1, principal communication module and required communication
Slave communication module between by power supply line connect, DC power supply by principal communication module be from communication module power, principal communication
Modulated signal is modulated in DC power signal by module, decodes modulation letter from communication module from above-mentioned DC power signal
Number, realize the transmission of modulated signal.Principal communication module is realized by detection electric current to the status monitoring from communication module.
DC power supply is to power from communication module by principal communication module in Fig. 1, and DC power supply parameter is according to from communication
Modular power source demand is selected, and is specially wireless charging transmitting terminal from communication module.
Principal communication module: structure is as shown in Fig. 2, its function is that modulated signal is modulated in power supply signal.It is main logical
Believe to include the first DC interface and the 2nd DC interface in module, the first DC interface connects DC power supply, and the 2nd DC interface is connected from logical
Believe the third power interface DC interface of module；Wherein, the first DC interface, connect with MCU1 for interactive interface, MCU1 reception
The input information of user's interactive interface, and above-mentioned input information is sent to N-type mos pipe Q2 grid connected to it, Q2 drain electrode
Ground connection, the one end Q2 source electrode connecting resistance R2, the resistance R2 other end distinguish the one end connecting resistance R1 and the one end resistance R3, and resistance R3's is another
Terminate p-type mos pipe Q1 grid, another termination the first DC interface, the source electrode of Q1 and cathode of diode D1 of resistance R1, diode D1
Anode, Q1 drain electrode connect the 2nd DC interface.Generally, when user, which issues, starts control information, MCU1 receives user's interaction and connects
The beginning control information of mouth, MCU1, which is sent, starts control information packet, starts the low and high level that control information packet is certain frequency
Encoded signal, the low and high level signal control the on, off of mos pipe Q1, Q2, to will start to correct packet signal modulation to electricity
In source signal.When MCU1 issues high level, N-type mos pipe Q2 conducting, resistance R3 right end is low level, and p-type mos pipe Q1 is connected,
V2 voltage value is equal to V1；When MCU1 issues low level, N-type mos pipe Q2 shutdown, resistance R3 right end is high level, p-type mos pipe
Q1 shutdown, V2 voltage value are V1-VD1, and VD1 is diode D1 conduction voltage drop.Therefore, start correction packet signal and be then modulated to electricity
Pressure signal V2 is suffered.
From communication module (wireless communication transmitting terminal): structure is as shown in figure 3, its function is that principal communication module is modulated
Power supply signal decoding.Input voltage signal is passed to by the 3rd DC interface from the input voltage detection circuit of communication module
MCU2, MCU2 decode signal by carrying out sampling to input voltage signal, when MCU2 judges to receive signal and executes.When main logical
Believe module to after control information, wireless charger transmitting terminal input voltage detection circuit is inputted since issuing communication module
Voltage signal passes to MCU2, and MCU2 decodes signal by carrying out sampling to the voltage signal, when MCU2 judges to receive signal packet
When to start correction signal, MCU2 makes coil current increase from zero to maximum current value, MCU2 note by control inverter
The no-load loss under each current value is recorded, to complete primary parameter correction, wireless charging transmitter returns to standby mode.Whole
In a correction course, wireless charging transmitter input current is gradually increased, when calibrate complete when, wireless charging transmitter return to
Machine state, then its input current is reduced to standby current value, therefore works as MCU1 in principal communication module and detect current value I1From to
When electromechanical flow valuve increases, then it represents that control information is properly received confirmation message since communication module returns to principal communication module.When
Timing is completed, principal communication module detects current value I1It is reduced to standby current value, then principal communication module, which receives, is corrected into
Function information, MCU1 then pass through user's interactive interface and inform that user corrects successfully.
First DC interface and equal parallel filtering capacitor C1, the C2 of the 2nd DC interface.
The above content is specific/preferred embodiment further detailed description of the utility model is combined, no
It can assert that the specific implementation of the utility model is only limited to these instructions.For the common skill of the utility model technical field
For art personnel, without departing from the concept of the premise utility, the embodiment that these have been described can also be made
Some replacements or modifications, and these substitutions or variant all shall be regarded as belonging to the protection scope of the utility model.
Claims (9)
1. a kind of communication device of power interface, it is characterised in that: it includes principal communication module with required communication from communicating mould
Block is connected by power supply line between above-mentioned master and slave communication module, and DC power supply is to supply from communication module by principal communication module
Modulated signal is modulated in DC power signal by electricity, principal communication module, is decoded from communication module from above-mentioned DC power signal
Modulated signal out realizes the transmission of modulated signal.
2. communication device according to claim 1, it is characterised in that: principal communication module is realized by detection electric current to from logical
Believe the status monitoring of module.
3. communication device according to claim 1, it is characterised in that: from communication module be wireless charging transmitting terminal.
4. communication device according to claim 1 or 2, it is characterised in that: principal communication module includes MCU1, receives user and hands over
The input information of mutual interface, input information are the low and high level encoded signal of certain frequency；MCU1 sends above-mentioned input information, on
The on, off for the mos pipe that the control of low and high level encoded signal is connect with MCU1 is stated, so that modulates information will be inputted to direct current
In source signal.
5. communication device according to claim 3, it is characterised in that: in principal communication module MCU1 detect current value to
When electromechanical flow valuve increases, then it represents that control information is properly received confirmation message since communication module returns to principal communication module；When
Principal communication module detects that current value is reduced to standby current value, then principal communication module receives correction successful information, and MCU1 is then
Inform that user corrects successfully by user's interactive interface.
6. communication device according to claim 2, it is characterised in that: include the first DC interface and second in principal communication module
DC interface, the first DC interface connect DC power supply, and the 2nd DC interface connects the third power interface DC interface from communication module；Its
In, the first DC interface is connect with MCU1 for interactive interface, and MCU1 receives the input information of user's interactive interface, and will be upper
It states input information and is sent to N-type mos pipe Q2 grid connected to it, Q2 grounded drain, the one end Q2 source electrode connecting resistance R2, resistance R2
The other end distinguishes the one end connecting resistance R1 and the one end resistance R3, another termination p-type mos pipe Q1 grid of resistance R3, resistance R1 are another
The cathode of the first DC interface, the source electrode of Q1 and diode D1 is terminated, the anode of diode D1, Q1 drain electrode connect the 2nd DC interface.
7. communication device according to claim 1, it is characterised in that: pass through from the input voltage detection circuit of communication module
Input voltage signal is passed to MCU2 by the 3rd DC interface, and MCU2 decodes signal by carrying out sampling to input voltage signal, when
MCU2 judgement receives signal and executes.
8. communication device according to claim 7, it is characterised in that: when the reception signal is beginning correction signal,
MCU2 makes coil current increase from zero to maximum current value by control inverter, and MCU2 records the sky under each current value
Load-loss returns to standby mode from communication module to complete primary parameter correction.
9. communication device according to claim 5 or 6, it is characterised in that: the first DC interface and the 2nd DC interface are in parallel
Filter capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822182835.XU CN209642665U (en) | 2018-12-24 | 2018-12-24 | A kind of communication device of power interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822182835.XU CN209642665U (en) | 2018-12-24 | 2018-12-24 | A kind of communication device of power interface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209642665U true CN209642665U (en) | 2019-11-15 |
Family
ID=68475687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822182835.XU Active CN209642665U (en) | 2018-12-24 | 2018-12-24 | A kind of communication device of power interface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209642665U (en) |
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2018
- 2018-12-24 CN CN201822182835.XU patent/CN209642665U/en active Active
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