CN108513690B - A method and adapter for charging a specific host - Google Patents
A method and adapter for charging a specific host Download PDFInfo
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- CN108513690B CN108513690B CN201880000188.6A CN201880000188A CN108513690B CN 108513690 B CN108513690 B CN 108513690B CN 201880000188 A CN201880000188 A CN 201880000188A CN 108513690 B CN108513690 B CN 108513690B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from AC mains by converters
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
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- H02J7/022—
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from AC mains by converters
- H02J7/04—Regulation of charging current or voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of DC power input into DC power output
- H02M3/005—Conversion of DC power input into DC power output using Cuk converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
- H02M7/02—Conversion of AC power input into DC power output without possibility of reversal
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
- H02M7/02—Conversion of AC power input into DC power output without possibility of reversal
- H02M7/04—Conversion of AC power input into DC power output without possibility of reversal by static converters
- H02M7/06—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
- H02J7/00045—Authentication, i.e. circuits for checking compatibility between one component, e.g. a battery or a battery charger, and another component, e.g. a power source
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
- H02M1/007—Plural converter units in cascade
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
本发明提供的一种用于特定主机充电的方法和适配器，将所述适配器与待识别主机连接，所述适配器通过AC‑DC转换电路输出第一电压给DC‑DC电路，此时DC‑DC电路不工作，仅传输第一电压给所述待识别主机，待识别主机得到第一电压输入，待识别主机的电源协商电路工作起来，若待识别主机为特定主机，则特定主机通过反馈电路输出反馈信号给控制电路，控制电路控制DC‑DC电路输出第二电压给特定主机充电，不需要在适配器内部和待识别主机内添加价格高昂的TYPE‑C协议芯片，成本低廉。
The present invention provides a method and an adapter for charging a specific host. The adapter is connected to the host to be identified, and the adapter outputs a first voltage to a DC-DC circuit through an AC-DC conversion circuit. At this time, the DC-DC The circuit does not work, only the first voltage is transmitted to the host to be identified, the host to be identified gets the first voltage input, and the power negotiation circuit of the host to be identified works, if the host to be identified is a specific host, the specific host outputs through the feedback circuit The feedback signal is sent to the control circuit, and the control circuit controls the DC-DC circuit to output a second voltage to charge a specific host. There is no need to add expensive TYPE-C protocol chips inside the adapter and the host to be identified, and the cost is low.
Description
Technical Field
The present invention relates to the field of embedded systems, and in particular, to a method and an adapter for charging a specific host.
Background
The adapter meeting the USB TYPE-C specification can output the negotiable voltage of 5V-20V, the adapter and the equipment are connected with each other and work according to the 5V voltage, and after the adapter and the equipment negotiate according to the USB TYPE-C protocol, the power supply voltage and the working voltage are adjusted to the expected voltage of the two parties, so that the adapter can be effectively prevented from outputting high voltage, and the equipment which can only work at 5V is prevented from being damaged. However, this solution has certain drawbacks: the adapter and the equipment both need to follow the USB TYPE-C protocol, expensive TYPE-C protocol chips are added in the adapter and the electronic equipment host, and the cost is high.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: a method and adapter are provided that provide a negotiation mechanism for identifying a particular host charging.
In order to solve the technical problems, the invention adopts a technical scheme that:
a method for host-specific charging, comprising the steps of:
s1, presetting a parameter, storing the parameter in an adapter, connecting the adapter with a host to be identified and outputting a first voltage to the host to be identified;
s2, if the adapter receives the feedback signal sent by the host to be identified, preprocessing the feedback signal;
s3, judging whether the preprocessed feedback signal is matched with the parameter, if so, determining that the host to be identified is a specific host, and outputting a second voltage to charge the specific host by the adapter; the value of the second voltage is greater than the value of the first voltage.
The other technical scheme adopted by the invention is as follows:
an adapter for charging a specific host comprises an AC-DC conversion circuit, a DC-DC circuit, a control circuit and a feedback circuit, wherein the AC-DC conversion circuit is connected with the host to be identified through the DC-DC circuit, the DC-DC circuit is connected with the feedback circuit through the control circuit, and the feedback circuit is connected with the host to be identified.
The invention has the beneficial effects that: the adapter is connected with a host to be identified, the adapter outputs first voltage to the DC-DC circuit through the AC-DC conversion circuit, the DC-DC circuit does not work at the moment, only the first voltage is transmitted to the host to be identified, the host to be identified obtains first voltage input, the power negotiation circuit of the host to be identified works, if the host to be identified is a specific host, the specific host outputs a feedback signal to the control circuit through the feedback circuit, the control circuit controls the DC-DC circuit to output second voltage to charge the specific host, and expensive TYPE-C protocol chips do not need to be added in the adapter and the host to be identified, so that the cost is low.
Drawings
FIG. 1 is a schematic diagram of a method for charging a particular host according to the present invention;
FIG. 2 is a schematic diagram of an adapter for charging a specific host according to the present invention;
FIG. 3 is a circuit diagram of an embodiment of a feedback circuit of an adapter for charging a particular host according to the present invention;
description of reference numerals:
1. an AC-DC conversion circuit; 2. a DC-DC circuit; 3. a control circuit; 4. a feedback circuit;
5. and (4) the host to be identified.
Detailed Description
The most key concept of the invention is as follows: the adapter outputs a first voltage to the host to be identified, the specific host is identified through a negotiation mechanism, if the host to be identified is the specific host, the specific host outputs a feedback signal to the adapter through the feedback circuit, and the adapter outputs a second voltage to charge the specific host.
Referring to fig. 1, a technical solution adopted by the present invention is:
a method for host-specific charging, comprising the steps of:
s1, presetting a parameter, storing the parameter in an adapter, connecting the adapter with a host to be identified and outputting a first voltage to the host to be identified;
s2, if the adapter receives the feedback signal sent by the host to be identified, preprocessing the feedback signal;
s3, judging whether the preprocessed feedback signal is matched with the parameter, if so, determining that the host to be identified is a specific host, and outputting a second voltage to charge the specific host by the adapter; the value of the second voltage is greater than the value of the first voltage.
From the above description, the beneficial effects of the present invention are: the adapter is connected with the host to be identified and outputs a first voltage to the host to be identified, the specific host is identified through a negotiation mechanism, if the host to be identified is the specific host, the specific host outputs a feedback signal to the adapter, the adapter outputs a second voltage to charge the specific host, and expensive TYPE-C protocol chips do not need to be added in the adapter and the host to be identified, so that the cost is low.
Further, step S3 includes extracting a dc level from the preprocessed feedback signal, calculating a difference between the dc level and the parameter, taking an absolute value of the difference, and if the absolute value is smaller than a preset value, determining that the preprocessed feedback signal matches the parameter.
As can be seen from the above description, if the preprocessed feedback signal matches the parameter, it indicates that the host to be identified is a specific host.
Further, step S3 includes if the preprocessed feedback signal does not match the parameter, determining that the host to be identified is a non-specific host, and the adapter keeps outputting the first voltage to charge the non-specific host.
From the above description, if the host to be identified is the non-specific host, the adapter keeps outputting the first voltage to charge the non-specific host, so as to ensure that the non-specific host is not damaged due to the voltage mismatch.
Further, the preprocessing of step S2 includes rectifying and filtering the feedback signal.
As can be seen from the above description, rectifying and filtering the feedback signal may eliminate noise interference.
Further, the feedback signal of step S2 is a periodic clock signal, the amplitude of the periodic clock signal ranges from 1V to 5V, and the frequency of the periodic clock signal ranges from 1Khz to 100Mhz, for example, the amplitude of the periodic clock signal is 3V, and the frequency of the periodic clock signal is 100 Khz.
As can be seen from the above description, the periodic clock signal with an output amplitude of 1V-5V and a frequency range of 1Khz-100Mhz is fed back to the control circuit as a characteristic signal of a specific host machine, so that the control circuit can identify the specific host machine.
Further, the value of the second voltage is 4-6 times of the value of the first voltage.
As can be seen from the above description, the value of the second voltage is 4-6 times the value of the first voltage to achieve fast charging of a particular host.
Referring to fig. 2 to fig. 3, another technical solution adopted by the present invention is:
an adapter for charging a specific host comprises an AC-DC conversion circuit, a DC-DC circuit, a control circuit and a feedback circuit, wherein the AC-DC conversion circuit is connected with the host to be identified through the DC-DC circuit, the DC-DC circuit is connected with the feedback circuit through the control circuit, and the feedback circuit is connected with the host to be identified.
The adapter is connected with a host to be identified, the adapter outputs first voltage to the DC-DC circuit through the AC-DC conversion circuit, the DC-DC circuit does not work at the moment, only the first voltage is transmitted to the host to be identified, the host to be identified obtains first voltage input, the power negotiation circuit of the host to be identified works, if the host to be identified is a specific host, the specific host outputs a feedback signal to the control circuit through the feedback circuit, and the control circuit controls the DC-DC circuit to output second voltage to charge the specific host.
According to the description, the adapter is connected with the host to be identified, the AC-DC conversion circuit outputs the first voltage to the host to be identified, if the host to be identified is the specific host, the specific host outputs the feedback signal to the control circuit through the feedback circuit, the control circuit controls the DC-DC circuit to output the second voltage to charge the specific host, and expensive TYPE-C protocol chips do not need to be added in the adapter and the host to be identified, so that the cost is low.
Further, the AC-DC conversion circuit comprises a bridge rectifier, a filter circuit and a transformation circuit which are sequentially connected, wherein the bridge rectifier is connected with a mains supply, the transformation circuit is connected with the DC-DC circuit, and the transformation circuit outputs a first voltage.
As can be seen from the above description, the adapter outputs the first voltage to the DC-DC circuit through the AC-DC conversion circuit, and the DC-DC circuit outputs the first voltage to the host to be identified.
Furthermore, the DC-DC circuit comprises a boost chip, an enable pin of the boost chip is connected with the control circuit, an input pin of the boost chip is connected with the AC-DC conversion circuit, and an output pin of the boost chip is connected with the host to be identified.
As can be seen from the above description, the control circuit controls the DC-DC circuit to output the second voltage to charge the specific host.
Further, the feedback circuit comprises a first crystal oscillator, a first phase inverter and a second phase inverter which are connected with each other, the first crystal oscillator and the first phase inverter are connected with the host to be identified, and the second phase inverter is connected with the control circuit; further, the feedback circuit is a microcontroller in the specific host and a clock output pin of the microcontroller, the microcontroller operates under the first voltage and the second voltage and generates periodic clock output, and the clock output pin is connected with the control circuit.
As can be seen from the above description, the feedback circuit is mainly used to generate a periodic clock signal.
Further, the adapter is equipped with the cable that links to each other with the host computer of treating discerning, the cable is 4 heart yearns, specifically includes power pin, first signal pin, second signal pin and ground connection pin, the both ends interface of cable is the TYPE-A interface that links to each other with the adapter respectively and treats the TYPE-C interface that the discernment host computer links to each other.
As can be seen from the above description, the adapter implements negotiation communication with the host to be identified through the first signal pin and the second signal pin.
Furthermore, the LED lamp comprises an indicating lamp circuit, the indicating lamp circuit comprises two LED lamps which are connected in parallel and are respectively connected with the control circuit, and the light colors of the two LED lamps are different.
As can be seen from the above description, the indicator light circuit is used to indicate the operating status of the adapter.
Referring to fig. 1, a first embodiment of the present invention is:
a method for host-specific charging, comprising the steps of:
s1, presetting a parameter and storing the parameter in an adapter, where the parameter is a voltage value in the embodiment, connecting the adapter with a host to be identified and outputting a first voltage to the host to be identified, where the first voltage is 5V in the embodiment;
s2, if the adapter receives the feedback signal sent by the host to be identified, preprocessing the feedback signal, wherein the preprocessing comprises rectifying and filtering the feedback signal, extracting a direct current level from the preprocessed feedback signal, calculating a difference value between the direct current level and a parameter, taking an absolute value of the difference value, if the absolute value is smaller than a preset value, determining that the preprocessed feedback signal is matched with the parameter, if the preprocessed feedback signal is not matched with the parameter, determining that the host to be identified is a non-specific host, and keeping the adapter outputting 5V voltage to charge the non-specific host;
the feedback signal of step S2 is a periodic clock signal, the amplitude range of the periodic clock signal is 1V-5V, and the frequency range of the periodic clock signal is 1Khz-100Mhz, wherein the amplitude of the periodic clock signal is preferably 3V, and the frequency of the periodic clock signal is preferably 100 Khz;
s3, judging whether the preprocessed feedback signal is matched with the parameter, if so, determining that the host to be identified is a specific host, and outputting a second voltage to charge the specific host by the adapter; the value of the second voltage is greater than the value of the first voltage, the value of the second voltage is 4-6 times of the value of the first voltage, and the second voltage is 20V in this embodiment.
Referring to fig. 2 to fig. 3, a second embodiment of the present invention is:
an adapter for charging a specific host comprises an AC-DC conversion circuit 1, a DC-DC circuit 2, a control circuit 3 and a feedback circuit 4, wherein the AC-DC conversion circuit 1 is connected with the host 3 to be identified through the DC-DC circuit 2, the DC-DC circuit 2 is connected with the feedback circuit 4 through the control circuit 3, and the feedback circuit 4 is connected with a host 5 to be identified.
The AC-DC conversion circuit comprises a bridge rectifier, a filter circuit and a transformation circuit which are sequentially connected, wherein the bridge rectifier is connected with a mains supply, the transformation circuit is connected with the DC-DC circuit, and the transformation circuit outputs 5V direct current voltage.
The DC-DC circuit comprises a boost chip, an enable pin of the boost chip is connected with the control circuit, an input pin of the boost chip is connected with the AC-DC conversion circuit, and an output pin of the boost chip is connected with the host to be identified.
As shown in fig. 3, the feedback circuit comprises a first crystal oscillator, a first inverter and a second inverter which are connected with each other, the first crystal oscillator and the first inverter are connected with the host to be identified, and the second inverter is connected with the control circuit; further, the feedback circuit is a microcontroller in the specific host and a clock output pin of the microcontroller, the microcontroller operates under the first voltage and the second voltage and generates periodic clock output, and the clock output pin is connected with the control circuit.
The adapter is connected with a host to be identified, the adapter outputs 5V voltage to the DC-DC circuit through the AC-DC conversion circuit, the DC-DC circuit does not work at the moment, only 5V voltage is transmitted to the host to be identified, the host to be identified obtains 5V voltage input, the power negotiation circuit of the host to be identified works, if the host to be identified is a specific host, the specific host outputs a feedback signal to the control circuit through the feedback circuit, and the control circuit controls the DC-DC circuit to output 20V voltage to charge the specific host.
The adapter is provided with a cable connected with a host to be identified, wherein the cable is a 4-core wire and specifically comprises a power supply pin, a first signal pin, a second signal pin and a grounding pin.
The two-end interface of the cable is a TYPE-A interface connected with the adapter and a TYPE-C interface connected with the host to be identified respectively.
For the USB2.0 communication protocol: one end of the USB needs to provide a pull-up resistor first, and after the other end of the USB recognizes the pull-up resistor, the other end of the USB starts enumeration actively, and the first signal pin and the second signal pin at one end of the USB have signals.
For the USB fast charge QC protocol: the adapter firstly provides 0.325V voltage, the host terminal recognizes the 0.325V voltage, the first signal pin and the second signal pin are firstly shorted for 1.25s and then the first signal pin and the second signal pin are disconnected, and the host terminal continuously provides 3.3V or 0.6V voltage for the adapter. The adapter of the invention does not follow the QC protocol, so other USB quick charging terminals can not continuously generate continuous alternating current signals on the first signal pin and the second signal pin, meanwhile, the QC protocol is to short-circuit the first signal pin and the second signal pin for 1.25s and then disconnect the first signal pin and the second signal pin, and respectively identify the fixed level of 3.3V or 0.6V.
For USB PD fast charge and MTK PEK fast charge protocols: the PD and PE standard quick charging adapters do not use the first signal pin and the second signal pin, so the first signal pin and the second signal pin do not generate signals and cannot be triggered by the alternating current signal of the specific host defined by the invention.
The adapter for charging the specific host further comprises an indicating lamp circuit for indicating the working state of the adapter, the indicating lamp circuit is connected with the control circuit and comprises two LED lamps connected in parallel, the two LED lamps are respectively connected with the control circuit, one LED lamp is red, the other LED lamp is green, if the host to be identified is the specific host, the green lamp is turned on, and if the host to be identified is the specific host, the red lamp is turned on.
Taking a cash register as an example, the power supply conditions of the cash register respectively cross-connected with other devices are as shown in table 1 below, so that the voltage matching between the specific adapter and the specific host is realized in a low-cost manner, and the risks that the specific adapter and the non-specific host are damaged due to the mixed insertion between the specific adapter and the non-specific host and between the non-specific adapter and the specific host are avoided.
TABLE 1
In summary, according to the method and the adapter for charging a specific host provided by the present invention, the adapter is connected to a host to be identified, the adapter outputs a first voltage to the DC-DC circuit through the AC-DC conversion circuit, at this time, the DC-DC circuit does not operate, only the first voltage is transmitted to the host to be identified, the host to be identified obtains the first voltage input, the power negotiation circuit of the host to be identified operates, if the host to be identified is the specific host, the specific host outputs a feedback signal to the control circuit through the feedback circuit, the control circuit controls the DC-DC circuit to output a second voltage to charge the specific host, and it is not necessary to add expensive TYPE-C protocol chips inside the adapter and the host to be identified, so that the cost is low.
Claims (14)
1. A method for charging a specific host, comprising the steps of:
s1, presetting a parameter, storing the parameter in an adapter, connecting the adapter with a host to be identified and outputting a first voltage to the host to be identified;
s2, if the adapter receives the feedback signal sent by the host to be identified, preprocessing the feedback signal;
s3, judging whether the preprocessed feedback signal is matched with the parameter, if so, determining that the host to be identified is a specific host, and outputting a second voltage to charge the specific host by the adapter; the value of the second voltage is greater than that of the first voltage;
step S3 includes extracting a dc level from the preprocessed feedback signal, calculating a difference between the dc level and the parameter, taking an absolute value of the difference, and if the absolute value is smaller than a preset value, determining that the preprocessed feedback signal matches the parameter.
2. The method according to claim 1, wherein the step S3 further comprises determining the host to be identified as a non-specific host if the pre-processed feedback signal does not match the parameter, and the adapter keeps outputting the first voltage to charge the non-specific host.
3. The method of claim 1, wherein the preprocessing of step S2 includes rectifying and filtering the feedback signal.
4. The method of claim 1, wherein the feedback signal of step S2 is a periodic clock signal.
5. The method of claim 4, wherein the amplitude of the periodic clock signal is in a range of 1V to 5V, and the frequency of the periodic clock signal is in a range of 1Khz to 100 Mhz.
6. The method of claim 5, wherein the amplitude of the periodic clock signal is 3V and the frequency of the periodic clock signal is 100 Khz.
7. The method of claim 1, wherein the second voltage has a value 4-6 times the value of the first voltage.
8. An adapter for charging a specific host computer is characterized by comprising an AC-DC conversion circuit, a DC-DC circuit, a control circuit and a feedback circuit, wherein the AC-DC conversion circuit is connected with the host computer to be identified through the DC-DC circuit;
the feedback circuit comprises a first crystal oscillator, a first phase inverter and a second phase inverter which are connected with each other, the first crystal oscillator and the first phase inverter are connected with the host to be identified, and the second phase inverter is connected with the control circuit; further, the feedback circuit is a microcontroller in the specific host and a clock output pin of the microcontroller, the microcontroller operates under the first voltage and the second voltage and generates periodic clock output, and the clock output pin is connected with the control circuit.
9. The adapter for charging a specific host according to claim 8, wherein the AC-DC conversion circuit comprises a bridge rectifier, a filter circuit and a transformer circuit connected in sequence, the bridge rectifier is connected to the commercial power, the transformer circuit is connected to the DC-DC circuit, and the transformer circuit outputs the first voltage.
10. The adapter for charging a specific host according to claim 8, wherein the DC-DC circuit comprises a boost chip, an enable pin of the boost chip is connected to the control circuit, an input pin of the boost chip is connected to the AC-DC conversion circuit, and an output pin of the boost chip is connected to the host to be identified.
11. The adapter for charging a specific host according to claim 8, wherein the adapter is provided with a cable connected to the host to be identified, and the cable is a 4-wire cable and specifically comprises a power pin, a first signal pin, a second signal pin and a ground pin.
12. The adapter of claim 11, wherein the two end interfaces of the cable are a TYPE-a interface connected to the adapter and a TYPE-C interface connected to the host to be identified.
13. An adapter for charging a specific host according to claim 8, further comprising an indicator light circuit, said indicator light circuit being coupled to the control circuit.
14. The adapter for charging a specific host computer according to claim 13, wherein said indicator light circuit comprises two LED lights connected in parallel with each other and respectively connected to the control circuit, and the colors of the lights of the two LED lights are different.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2018/079710 WO2019178758A1 (en) | 2018-03-21 | 2018-03-21 | Method and adapter for charging specific host |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108513690A CN108513690A (en) | 2018-09-07 |
| CN108513690B true CN108513690B (en) | 2021-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880000188.6A Active CN108513690B (en) | 2018-03-21 | 2018-03-21 | A method and adapter for charging a specific host |
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| CN (1) | CN108513690B (en) |
| WO (1) | WO2019178758A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109388207A (en) * | 2018-10-31 | 2019-02-26 | 广东迅扬科技股份有限公司 | Water-cooled computer host |
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| CN104810873A (en) * | 2014-01-28 | 2015-07-29 | 广东欧珀移动通信有限公司 | Electronic device charging control device and method |
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| CN107706685A (en) * | 2017-11-24 | 2018-02-16 | 深圳市乐得瑞科技有限公司 | A kind of connector |
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| US20120153891A1 (en) * | 2007-11-07 | 2012-06-21 | Yung-Tai Yang | Portable electronic apparatus and circuit and method for charging rechargeable battery thereof |
| US10224732B2 (en) * | 2016-01-28 | 2019-03-05 | Dell Products L.P. | Information handling system external adapter and battery source |
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- 2018-03-21 WO PCT/CN2018/079710 patent/WO2019178758A1/en active Application Filing
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| CN101099157A (en) * | 2005-01-07 | 2008-01-02 | 苹果公司 | Accessory Certification for Electronic Devices |
| CN105359400A (en) * | 2013-04-24 | 2016-02-24 | 西部数据技术公司 | Power supply with voltage output responsive to load demand |
| CN104810873A (en) * | 2014-01-28 | 2015-07-29 | 广东欧珀移动通信有限公司 | Electronic device charging control device and method |
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| CN105490333A (en) * | 2015-12-18 | 2016-04-13 | 深圳市芯沃微电子有限公司 | Rapid charging control circuit for battery, adapter and mobile equipment |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108513690A (en) | 2018-09-07 |
| WO2019178758A1 (en) | 2019-09-26 |
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