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WO2019178758A1 - 一种用于特定主机充电的方法和适配器 - Google Patents

一种用于特定主机充电的方法和适配器 Download PDF

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Publication number
WO2019178758A1
WO2019178758A1 PCT/CN2018/079710 CN2018079710W WO2019178758A1 WO 2019178758 A1 WO2019178758 A1 WO 2019178758A1 CN 2018079710 W CN2018079710 W CN 2018079710W WO 2019178758 A1 WO2019178758 A1 WO 2019178758A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit
host
adapter
identified
specific host
Prior art date
Application number
PCT/CN2018/079710
Other languages
English (en)
French (fr)
Inventor
陈扬剑
Original Assignee
福建联迪商用设备有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 福建联迪商用设备有限公司 filed Critical 福建联迪商用设备有限公司
Priority to PCT/CN2018/079710 priority Critical patent/WO2019178758A1/zh
Priority to CN201880000188.6A priority patent/CN108513690B/zh
Publication of WO2019178758A1 publication Critical patent/WO2019178758A1/zh

Links

Classifications

    • 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
    • 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
    • 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
    • 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
    • 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
    • H02J7/022—
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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

Definitions

  • the present invention relates to the field of embedded systems, and in particular, to a method and an adapter for charging a specific host.
  • Adapters conforming to the USB TYPE-C specification can output a negotiable voltage of 5V-20V. When connected between the adapter and the device, they are powered and operated at 5V. After the adapter and device are negotiated according to the USB TYPE-C protocol. Then adjust the supply voltage and working voltage to the expected voltage of both sides, which can effectively prevent the adapter from outputting high voltage and avoid damage to equipment that can only work at 5V.
  • Both the adapter and the device need to follow the USB TYPE-C protocol, and the expensive TYPE-C protocol chip is added inside the adapter and the electronic device host, which is costly.
  • the technical problem to be solved by the present invention is to provide a method and an adapter for providing a negotiation mechanism for identifying a specific host charging.
  • a method for charging a particular host comprising the steps of:
  • S1 preset a parameter and store the parameter in the adapter, connect the adapter to the host to be identified, and output a first voltage to the host to be identified;
  • An adapter for charging a specific host 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 to a host to be identified through a DC-DC circuit, The D C-DC circuit is connected to the feedback circuit through a control circuit, and the feedback circuit is connected to the host to be identified.
  • the beneficial effects of the present invention are: connecting the adapter to the host to be identified, the adapter outputs a first voltage to the DC-DC circuit through the A C-DC conversion circuit, and the DC-DC circuit does not work, only Transmitting a first voltage to the host to be identified, the host to be identified obtains a first voltage input, and the power negotiation circuit of the host to be identified works, and 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 a second voltage to charge a specific host, and does not need to add a high-priced TYPE-C protocol chip inside the adapter and the host to be identified, and the cost is low.
  • FIG. 1 is a schematic diagram of a method for charging a particular host in accordance with the present invention
  • FIG. 2 is a schematic structural view 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 for an adapter for a particular host charging in accordance with the present invention.
  • the adapter outputs a first voltage to the host to be identified, and identifies a specific host through a negotiation mechanism. If the host to be identified is a specific host, the specific host outputs a feedback signal to the adapter through the feedback circuit. The second voltage is output to charge a particular host.
  • a method for charging a particular host comprising the steps of: [0022] SI presets a parameter and stores the parameter in the adapter, connects the adapter to the host to be identified, and outputs a first voltage to the host to be identified;
  • the beneficial effects of the present invention are: connecting an adapter to a host to be identified and outputting a first voltage to the host to be identified, and identifying a specific host by using a negotiation mechanism, if the host to be identified is a specific host, Then, the specific host outputs a feedback signal to the adapter, and the adapter outputs a second voltage to charge the specific host, and does not need to add a high-priced TYPE-C protocol chip inside the adapter and the host to be identified, and the cost is low.
  • step S3 includes extracting a DC level from the pre-processed feedback signal, calculating a difference between the DC level and the parameter, and taking the difference as an absolute value, and if the absolute value is less than a preset value, determining The pre-processed feedback signal matches the parameters.
  • the pre-processed feedback signal matches the parameter, it indicates that the host to be identified is a specific host.
  • step S3 further includes: if the pre-processed feedback signal does not match the parameter, determining that the to-be-identified host is a non-specific host, and the adapter keeps outputting the first voltage to charge the non-specific host.
  • the adapter keeps outputting the first voltage to charge the non-specific host, ensuring that the non-specific host will not be damaged due to voltage mismatch.
  • step S2 includes rectifying and filtering the feedback signal.
  • rectifying and filtering the feedback signal can eliminate noise interference.
  • the feedback signal of the step S2 is a periodic clock signal
  • the amplitude of the periodic clock signal ranges from 1V to 5V
  • the frequency range of the periodic clock signal is 1Khz-lOOMhz, for example
  • the amplitude of the periodic clock signal is 3V
  • the frequency of the periodic clock signal is lOOKhz.
  • a periodic clock signal with an output amplitude of 1V-5V and a frequency range of 1Khz-100Mhz is known.
  • the number is fed back to the control circuit as a characteristic signal of the specific host, so that the control circuit recognizes the specific host.
  • the value of the second voltage is 4-6 times the value of the first voltage.
  • the value of the second voltage is 4-6 times the value of the first voltage to achieve fast charging of a specific host.
  • An adapter for charging a specific host 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 to the host to be identified through a DC-DC circuit, The D C-DC circuit is connected to the feedback circuit through a control circuit, and the feedback circuit is connected to the host to be identified.
  • the adapter outputs the first voltage to the DC-DC circuit through the AC-DC conversion circuit, and the DC-DC circuit does not work, and only transmits the first voltage to the host to be identified, waiting for
  • the identification host obtains 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 a feedback signal to the control circuit through the feedback circuit, and the control circuit controls the DC-DC circuit to output the second voltage. Charge a specific host.
  • the adapter is connected to the host to be identified and outputs the first voltage to the host to be identified through the AC-DC conversion circuit. If the host to be identified is a specific host, the specific host outputs a feedback signal through the feedback circuit.
  • the control circuit controls the DC-DC circuit to output the second voltage to charge the specific host, and does not need to add a high-priced TYPE-C protocol chip inside the adapter and the host to be identified, and the cost is low.
  • the AC-DC conversion circuit includes a bridge rectifier, a filter circuit, and a transformer circuit that are sequentially connected, the bridge rectifier is connected to a mains, and the transformer circuit is connected to a DC-DC circuit.
  • the transformer circuit outputs a first voltage.
  • the adapter outputs the first voltage to the DC-DC circuit through the AC-DC conversion circuit, D
  • the C-DC circuit outputs a first voltage to the host to be identified.
  • the DC-DC circuit includes a boosting chip, an enable pin of the boosting chip is connected to the control circuit, and an input pin of the boosting chip is connected to an AC-DC converting circuit.
  • the output pin of the boost chip is connected to the host to be identified.
  • the control circuit controls the DC-DC circuit to output a second voltage to charge a specific host.
  • the feedback circuit includes a first crystal oscillator, a first inverter and a second inverter connected to each other, and the first crystal oscillator and the first inverter are connected to the host to be identified.
  • the second inverter is connected to the control circuit; further, the feedback circuit is a clock output pin of a microcontroller and a microcontroller in the specific host, and the microcontroller is at the first voltage and Operating at a second voltage and generating a periodic clock output, the clock output pin is coupled to the control circuit.
  • the feedback circuit is mainly used to generate a periodic clock signal.
  • the adapter is provided with a cable connected to the host to be identified, and the cable is a 4-core wire, and specifically includes a power pin, a first signal pin, a second signal pin, and a ground pin.
  • the two ends of the cable are respectively a TYPE-A interface connected to the adapter and a TYPE-C interface connected to the host to be identified.
  • the adapter implements negotiated communication with the host to be identified through the first signal pin and the second signal pin.
  • the indicator circuit further includes two LED lights connected in parallel with each other and respectively connected to the control circuit, and the light colors of the two LED lights are different.
  • the indicator circuit is used to indicate the operating state of the adapter.
  • the first embodiment of the present invention is:
  • a method for charging a particular host comprising the steps of:
  • S1 preset a parameter and store the parameter in an adapter.
  • the parameter is a voltage value
  • the adapter is connected to the host to be identified and outputs a first voltage to the host to be identified.
  • the first voltage in the example is 5V;
  • the adapter receives the feedback signal sent by the to-be-identified host, pre-processing the feedback signal, where the pre-processing includes rectifying and filtering the feedback signal, and extracting the feedback signal after pre-processing
  • the DC level is calculated, and the difference between the DC level and the parameter is calculated, and the difference is taken as an absolute value. If the absolute value is less than the preset value, it is determined that the pre-processed feedback signal matches the parameter, if the pre-processed If the feedback signal does not match the parameter, it is determined that the host to be identified is a non-specific host, and the adapter keeps outputting a voltage of 5V to charge the non-specific host;
  • the feedback signal of the step S2 is a periodic clock signal, the amplitude of the periodic clock signal ranges from 1V to 5V, and the frequency range of the periodic clock signal is 1Khz-100Mhz, wherein the period The amplitude of the clock signal is preferably 3V, and the frequency of the periodic clock signal is preferably 10OKhz; [0055] S3, determining whether the pre-processed feedback signal matches the parameter, and if yes, determining that the to-be-identified host is a specific host, the adapter outputting a second voltage to charge the specific host; The value of the voltage is greater than the value of the first voltage, and the value of the second voltage is 4-6 times the value of the first voltage. In this embodiment, the second voltage is 20V.
  • the second embodiment of the present invention is:
  • An adapter for charging a specific host comprising an AC-DC conversion circuit 1, a DC-DC circuit 2, a control circuit 3 and a feedback circuit 4, the AC-DC conversion circuit 1 being passed through a DC-DC circuit 2
  • the host to be identified 3 is connected, the DC-DC circuit 2 is connected to the feedback circuit 4 via a control circuit 3, and the feedback circuit 4 is connected to the host 5 to be identified.
  • the AC-DC conversion circuit includes a bridge rectifier, a filter circuit, and a transformer circuit that are sequentially connected, the bridge rectifier is connected to a mains, and the transformer circuit is connected to a DC-DC circuit, and the change The voltage circuit outputs 5 V DC voltage.
  • the DC-DC circuit includes a boosting chip, an enable pin of the boosting chip is connected to the control circuit, and an input pin of the boosting chip is connected to an AC-DC converting circuit, The output pin of the boost chip is connected to the host to be identified.
  • the feedback circuit includes a first crystal oscillator, a first inverter, and a second inverter connected to each other, the first crystal oscillator and the first inverter and the host to be identified Connected, the second inverter is connected to the control circuit; further, the feedback circuit is a clock output pin of a microcontroller and a microcontroller in a specific host, and the microcontroller is at the first voltage And operating at a second voltage and generating a periodic clock output, the clock output pin being coupled to the control circuit.
  • the adapter outputs 5V voltage to the DC-D through the AC-DC conversion circuit
  • the DC-DC circuit does not work, only transmits 5V voltage to the host to be identified, and the host to be identified receives 5V voltage input, and the power negotiation circuit of the host to be identified works, if the host to be identified is a specific host, then 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 a voltage of 20V to charge the specific host.
  • the adapter is provided with a cable connected to the host to be identified, and the cable is a 4-core wire, and specifically includes a power pin, a first signal pin, a second signal pin, and a ground pin.
  • the interfaces at both ends of the cable are respectively connected to the TYPE-A interface connected to the adapter and connected to the host to be identified.
  • TYPE-C interface The interfaces at both ends of the cable are respectively connected to the TYPE-A interface connected to the adapter and connected to the host to be identified.
  • 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 actively starts enumeration, and the first signal of the USB end There is a signal on the pin and the second signal pin. Because one end of the USB is an adapter, the first signal pin and the second signal pin do not have pull-up resistors, and do not respond to enumeration of other terminal devices, so even if the adapter Plugged into other USB terminal devices, other USB terminal devices do not cause the AC signal of the first signal pin and the second signal pin of the adapter to generate a continuous AC signal.
  • the continuous AC signal mentioned in this embodiment is a periodic clock signal.
  • the adapter first provides 0.325V, the host recognizes 0.325V, shorts the first signal pin and the second signal pin to 1.25s and then disconnects the first signal.
  • the pin and the second signal pin, the host side continues to supply 3.3V or 0.6V to the adapter.
  • the adapter of the present invention does not follow the QC protocol, so other USB fast charging terminals will not continuously generate a continuous AC signal on the first signal pin and the second signal pin, and the QC protocol is the first signal pin and the first The two signal pins are shorted for 1.25s and then the first signal pin and the second signal pin are disconnected to identify a fixed level of 3.3V or 0.6V, respectively.
  • the specific host defined by the present invention outputs a continuous AC signal, embodiment
  • the medium is a periodic clock signal and therefore will not be recognized by the QC protocol of other adapters.
  • USB PD fast charging and MTK PEK fast charging protocol do not use the first signal pin and the second signal pin, so the first signal pin and the second signal lead There is no signal generated at the foot and it will not be triggered by the AC signal of the particular host defined by the present invention.
  • the above-mentioned adapter for charging a specific host further includes an indicator circuit for indicating an operating state of the adapter, the indicator circuit being connected to the control circuit, the indicator circuit comprising two LEDs connected in parallel The two LED lights are respectively connected to the control circuit. The color of the two LED lights is red and the other is green. If the host to be identified is a specific host, it lights up in green, otherwise it lights red.
  • the power supply situation in which the cash register is cross-connected with other devices is as shown in Table 1 below, and the voltage matching of the specific adapter with the specific host is implemented in a low-cost manner, and the specific adapter and the non-specific host are avoided.
  • the risk of non-specific adapters being interspersed with specific hosts, and non-specific adapters and non-specific hosts are compromised.
  • the present invention provides a method and an adapter for charging a specific host, connecting the adapter to a host to be identified, and the adapter outputs a first voltage to the DC through an AC-DC conversion circuit.
  • DC circuit at this time, the DC-DC circuit does not work, only the first voltage is transmitted to the host to be identified, the host to be identified receives 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 Then, the specific host outputs a feedback signal to the control circuit through the feedback circuit, and the control circuit controls the D C-DC circuit to output the second voltage to charge the specific host, and does not need to add a high-priced TYPE-C protocol chip inside the adapter and the host to be identified. , low cost.

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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。

Description

一种用于特定主机充电的方法和适配器
技术领域
[0001] 本发明涉及嵌入式系统领域， 特别涉及一种用于特定主机充电的方法和适配器 背景技术
[0002] 符合 USB TYPE-C规范的适配器可以输出电压 5V-20V的可协商电压， 在适配器 与设备之间连接时都按 5V电压供电和工作， 经过适配器和设备按 USB TYPE-C协 议协商之后， 再将供电电压和工作电压调到双方预期的电压， 这样能有效防止 适配器输出高电压， 避免损坏只能工作在 5V的设备。 但是这种方案存在一定缺 点： 适配器和设备都需要遵循 USB TYPE-C协议， 在适配器内部和电子设备主机 内都要加价格高昂的 TYPE-C协议芯片， 成本高昂。
发明概述
技术问题
[0003] 本发明所要解决的技术问题是： 提供一种提供协商机制用于识别特定主机充电 的方法和适配器。
问题的解决方案
技术解决方案
[0004] 为了解决上述技术问题， 本发明采用的一种技术方案为：
[0005] 一种用于特定主机充电的方法， 包括以下步骤：
[0006] S1、 预设一参数并将所述参数存储在适配器中， 将适配器与待识别主机连接并 输出第一电压给所述待识别主机；
[0007] S2、 若适配器接收到所述待识别主机发送的反馈信号， 则对所述反馈信号进行 预处理；
[0008] S3、 判断预处理后的反馈信号是否与所述参数匹配， 若是， 则认定所述待识别 主机为特定主机， 所述适配器输出第二电压给所述特定主机充电； 所述第二电 压的数值大于第一电压的数值。 [0009] 本发明采用的另一种技术方案为：
[0010] 一种用于特定主机充电的适配器， 包括 AC-DC转换电路、 DC-DC电路、 控制电 路和反馈电路， 所述 AC-DC转换电路通过 DC-DC电路与待识别主机相连， 所述 D C-DC电路通过控制电路与反馈电路相连， 所述反馈电路与待识别主机相连。 发明的有益效果
有益效果
[0011] 本发明的有益效果在于： 将所述适配器与待识别主机连接， 所述适配器通过 A C-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。
对附图的简要说明
附图说明
[0012] 图 1为根据本发明的一种用于特定主机充电的方法的原理图；
[0013] 图 2为根据本发明的一种用于特定主机充电的适配器的结构示意图；
[0014] 图 3为根据本发明的一种用于特定主机充电的适配器的反馈电路的实施例电路 图；
[0015] 标号说明：
[0016] 1、 AC-DC转换电路； 2、 DC-DC电路； 3、 控制电路； 4、 反馈电路；
[0017] 5、 待识别主机。
[0018] 具体实施方式
[0019] 本发明最关键的构思在于： 适配器输出第一电压给待识别主机， 通过协商机制 来识别特定主机， 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 馈信号给适配器， 适配器输出第二电压给特定主机充电。
[0020] 请参照图 1， 本发明采用的一种技术方案为：
[0021] 一种用于特定主机充电的方法， 包括以下步骤： [0022] SI 预设一参数并将所述参数存储在适配器中， 将适配器与待识别主机连接并 输出第一电压给所述待识别主机；
[0023] S2、 若适配器接收到所述待识别主机发送的反馈信号， 则对所述反馈信号进行 预处理；
[0024] S3、 判断预处理后的反馈信号是否与所述参数匹配， 若是， 则认定所述待识别 主机为特定主机， 所述适配器输出第二电压给所述特定主机充电； 所述第二电 压的数值大于第一电压的数值。
[0025] 从上述描述可知， 本发明的有益效果在于： 将适配器与待识别主机连接并输出 第一电压给所述待识别主机， 通过协商机制来识别特定主机， 若待识别主机为 特定主机， 则特定主机输出反馈信号给适配器， 适配器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。
[0026] 进一步的， 步骤 S3包括对预处理后的反馈信号提取直流电平， 计算所述直流电 平与参数的差值， 将所述差值取绝对值， 若绝对值小于预设值， 则认定预处理 后的反馈信号与所述参数匹配。
[0027] 由上述描述可知， 若预处理后的反馈信号与所述参数匹配， 则表示待识别主机 为特定主机。
[0028] 进一步的， 步骤 S3还包括若预处理后的反馈信号与所述参数不匹配， 则认定所 述待识别主机为非特定主机， 适配器保持输出第一电压给所述非特定主机充电
[0029] 由上述描述可知， 若待识别主机为非特定主机， 则适配器保持输出第一电压给 所述非特定主机充电， 保证非特定主机不会因为电压不匹配二损坏。
[0030] 进一步的， 步骤 S2的预处理包括对反馈信号进行整流和滤波。
[0031] 由上述描述可知， 对反馈信号进行整流和滤波可以排除噪声干扰。
[0032] 进一步的， 所述步骤 S2的反馈信号为周期性时钟信号， 所述周期性时钟信号的 幅值范围为 1V-5V， 所述周期性时钟信号的频率范围为 lKhz-lOOMhz， 举例来说 ， 所述周期性时钟信号的幅值为 3V， 所述周期性时钟信号的频率为 lOOKhz。
[0033] 由上述描述可知， 输出幅度 1V-5V、 频率范围为 lKhz-100Mhz的周期性时钟信 号， 是作为特定主机的一个特征信号反馈给控制电路， 以便控制电路识别特定 的主机。
[0034] 进一步的， 所述第二电压的数值为第一电压的数值的 4-6倍。
[0035] 由上述描述可知， 所述第二电压的数值为第一电压的数值的 4-6倍实现对特定 主机的快速充电。
[0036] 请参照图 2 -图 3， 本发明采用的另一种技术方案为：
[0037] 一种用于特定主机充电的适配器， 包括 AC-DC转换电路、 DC-DC电路、 控制电 路和反馈电路， 所述 AC-DC转换电路通过 DC-DC电路与待识别主机相连， 所述 D C-DC电路通过控制电路与反馈电路相连， 所述反馈电路与待识别主机相连。
[0038] 将适配器与待识别主机连接， 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。
[0039] 由上述描述可知， 将适配器与待识别主机连接并通过 AC-DC转换电路输出第一 电压给所述待识别主机， 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。
[0040] 进一步的， 所述 AC-DC转换电路包括依次相连的桥式整流器、 滤波电路和变压 电路， 所述桥式整流器与市电相连， 所述变压电路与 DC-DC电路相连， 所述变 压电路输出第一电压。
[0041] 由上述描述可知， 适配器通过 AC-DC转换电路输出第一电压给 DC-DC电路， D
C-DC电路输出第一电压给待识别主机。
[0042] 进一步的， 所述 DC-DC电路包括升压芯片， 所述升压芯片的使能引脚与所述控 制电路相连， 所述升压芯片的输入引脚与 AC-DC转换电路相连， 所述升压芯片 的输出引脚与待识别主机相连。
[0043] 由上述描述可知， 控制电路控制 DC-DC电路输出第二电压给特定主机充电。 [0044] 进一步的， 所述反馈电路包括相互连接的第一晶体振荡器、 第一反相器和第二 反相器， 所述第一晶体振荡器和第一反相器与待识别主机相连， 所述第二反相 器与控制电路相连； 进一步的， 所述反馈电路为特定主机中的一个微控制器及 微控制器的一个时钟输出引脚， 所述微控制器在第一电压和第二电压下工作并 产生周期性时钟输出， 所述时钟输出引脚与控制电路相连。
[0045] 由上述描述可知， 反馈电路主要用于产生周期性时钟信号。
[0046] 进一步的， 所述适配器设有与待识别主机相连的线缆， 所述线缆为 4芯线， 具 体包括电源引脚、 第一信号引脚、 第二信号引脚和接地引脚， 所述线缆的两端 接口分别为与适配器相连的 TYPE- A接口和与待识别主机相连的 TYPE-C接口。
[0047] 由上述描述可知， 所述适配器通过第一信号引脚和第二信号引脚实现与待识别 主机的协商通讯。
[0048] 进一步的， 还包括指示灯电路， 所述指示灯电路包括两个相互并联连接且分别 与控制电路相连的 LED灯， 两个所述 LED灯的灯光颜色不相同。
[0049] 由上述描述可知， 指示灯电路用于指示适配器的工作状态。
[0050] 请参照图 1， 本发明的实施例一为：
[0051] 一种用于特定主机充电的方法， 包括以下步骤：
[0052] S1、 预设一参数并将所述参数存储在适配器中， 实施例中所述参数为电压值， 将适配器与待识别主机连接并输出第一电压给所述待识别主机， 本实施例中第 一电压为 5V;
[0053] S2、 若适配器接收到所述待识别主机发送的反馈信号， 则对所述反馈信号进行 预处理， 所述预处理包括对反馈信号进行整流和滤波， 对预处理后的反馈信号 提取直流电平， 计算所述直流电平与参数的差值， 将所述差值取绝对值， 若绝 对值小于预设值， 则认定预处理后的反馈信号与所述参数匹配， 若预处理后的 反馈信号与所述参数不匹配， 则认定所述待识别主机为非特定主机， 适配器保 持输出 5V电压给所述非特定主机充电；
[0054] 所述步骤 S2的反馈信号为周期性时钟信号， 所述周期性时钟信号的幅值范围为 1V-5V, 所述周期性时钟信号的频率范围为 lKhz-100Mhz， 其中， 所述周期性时 钟信号的幅值优选为 3V， 所述周期性时钟信号的频率优选为 lOOKhz; [0055] S3、 判断预处理后的反馈信号是否与所述参数匹配， 若是， 则认定所述待识别 主机为特定主机， 所述适配器输出第二电压给所述特定主机充电； 所述第二电 压的数值大于第一电压的数值， 所述第二电压的数值为第一电压的数值的 4-6倍 ， 本实施例中第二电压为 20V。
[0056] 请参照图 2 -图 3， 本发明的实施例二为：
[0057] 一种用于特定主机充电的适配器， 包括 AC-DC转换电路 1、 DC-DC电路 2、 控制 电路 3和反馈电路 4， 所述 AC-DC转换电路 1通过 DC-DC电路 2与待识别主机 3相连 ， 所述 DC-DC电路 2通过控制电路 3与反馈电路 4相连， 所述反馈电路 4与待识别 主机 5相连。
[0058] 所述 AC-DC转换电路包括依次相连的桥式整流器、 滤波电路和变压电路， 所述 桥式整流器与市电相连， 所述变压电路与 DC-DC电路相连， 所述变压电路输出 5 V直流电压。
[0059] 所述 DC-DC电路包括升压芯片， 所述升压芯片的使能引脚与所述控制电路相连 ， 所述升压芯片的输入引脚与 AC-DC转换电路相连， 所述升压芯片的输出引脚 与待识别主机相连。
[0060] 如图 3， 所述反馈电路包括相互连接的第一晶体振荡器、 第一反相器和第二反 相器， 所述第一晶体振荡器和第一反相器与待识别主机相连， 所述第二反相器 与控制电路相连； 进一步的， 所述反馈电路为特定主机中的一个微控制器及微 控制器的一个时钟输出引脚， 所述微控制器在第一电压和第二电压下工作并产 生周期性时钟输出， 所述时钟输出引脚与控制电路相连。
[0061] 将适配器与待识别主机连接， 适配器通过 AC-DC转换电路输出 5V电压给 DC-D
C电路， 此时 DC-DC电路不工作， 仅传输 5V电压给所述待识别主机， 待识别主 机得到 5V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 20V电压给特定主机充电。
[0062] 所述适配器设有与待识别主机相连的线缆， 所述线缆为 4芯线， 具体包括电源 引脚、 第一信号引脚、 第二信号引脚和接地引脚。
[0063] 所述线缆的两端接口分别为与适配器相连的 TYPE-A接口和与待识别主机相连 的 TYPE-C接口。
[0064] 对 USB2.0通讯协议来说： USB的一端需要先提供上拉电阻， USB的另一端识别 到上拉电阻之后， USB的另一端才主动开始枚举， USB的一端的第一信号引脚和 第二信号引脚上才会有信号， 因为 USB的一端是适配器， 第一信号引脚和第二信 号引脚没有上拉电阻， 不会响应其它终端设备的枚举， 所以就算适配器插到其 它 USB终端设备上， 其它 USB终端设备也不会使适配器的第一信号引脚和第二信 号引脚产生持续交流信号， 本实施例提及的持续交流信号为周期性时钟信号。
[0065] 对于 USB快充 QC协议来说： 适配器先提供 0.325V电压， 主机端识别到 0.325V 电压， 对第一信号引脚和第二信号引脚先短接 1.25s然后断开第一信号引脚和第 二信号引脚， 主机端才继续提供 3.3V或 0.6V电压给适配器。 而本发明的适配器没 有遵循 QC协议， 因此其它 USB快充终端也不会持续在第一信号引脚和第二信号 引脚上产生持续交流信号， 同时 QC协议是对第一信号引脚和第二信号引脚先短 接 1.25s然后断开第一信号引脚和第二信号引脚， 分别识别固定电平 3.3V或 0.6V ， 本发明定义的特定主机输出的是持续交流信号， 实施例中为周期性时钟信号 ， 因此不会被其他适配器的 QC协议识别到。
[0066] 对于 USB PD快充和 MTK PEK快充协议： PD和 PE标准的快充适配器， 都不使 用第一信号引脚和第二信号引脚， 因此第一信号引脚和第二信号引脚也不会有 信号产生， 不会被本发明定义的特定主机的交流信号触发。
[0067] 上述一种用于特定主机充电的适配器， 还包括用于指示适配器的工作状态的指 示灯电路， 所述指示灯电路与控制电路相连， 所述指示灯电路包括两个并联连 接的 LED灯， 两个所述 LED灯分别与控制电路相连， 两个所述 LED灯的颜色一个 为红色， 另一个为绿色， 若待识别主机为特定主机则亮绿灯， 否则亮红灯。
[0068] 以收银机为例， 收银机分别与其它设备交叉换接的电源情况如下表 1， 以低成 本的方式实现特定适配器与特定主机的电压匹配， 且避免了特定适配器与非特 定主机以及非特定适配器与特定主机之间混插， 非特定适配器与非特定主机受 损的风险。
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Figure imgf000010_0002
Figure imgf000010_0001
[0069] 表 1
[0070] 综上所述， 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 D C-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。

Claims

权利要求书
[权利要求 1] 一种用于特定主机充电的方法， 其特征在于， 包括以下步骤：
si、 预设一参数并将所述参数存储在适配器中， 将适配器与待识别主 机连接并输出第一电压给所述待识别主机；
52、 若适配器接收到所述待识别主机发送的反馈信号， 则对所述反馈 信号进行预处理；
53、 判断预处理后的反馈信号是否与所述参数匹配， 若是， 则认定所 述待识别主机为特定主机， 所述适配器输出第二电压给所述特定主机 充电； 所述第二电压的数值大于第一电压的数值。
[权利要求 2] 根据权利要求 1所述的一种用于特定主机充电的方法， 其特征在于， 步骤 S3包括对预处理后的反馈信号提取直流电平， 计算所述直流电平 与参数的差值， 将所述差值取绝对值， 若绝对值小于预设值， 则认定 预处理后的反馈信号与所述参数匹配。
[权利要求 3] 根据权利要求 1所述的一种用于特定主机充电的方法， 其特征在于， 步骤 S3还包括若预处理后的反馈信号与所述参数不匹配， 则认定所述 待识别主机为非特定主机， 适配器保持输出第一电压给所述非特定主 机充电。
[权利要求 4] 根据权利要求 1所述的一种用于特定主机充电的方法， 其特征在于， 步骤 S2的预处理包括对反馈信号进行整流和滤波。
[权利要求 5] 根据权利要求 1所述的一种用于特定主机充电的方法， 其特征在于， 所述步骤 S2的反馈信号为周期性时钟信号。
[权利要求 6] 根据权利要求 5所述的一种用于特定主机充电的方法， 其特征在于， 所述周期性时钟信号的幅值范围为 1V-5V， 所述周期性时钟信号的频 率范围为 lKhz-100Mhz。
[权利要求 7] 根据权利要求 6所述的一种用于特定主机充电的方法， 其特征在于， 所述周期性时钟信号的幅值为 3V， 所述周期性时钟信号的频率为 100
Khz。
[权利要求 8] 根据权利要求 i所述的一种用于特定主机充电的方法， 其特征在于， 所述第二电压的数值为第一电压的数值的 4-6倍。
[权利要求 9] 一种用于特定主机充电的适配器， 其特征在于， 包括 AC-DC转换电 路、 DC-DC电路、 控制电路和反馈电路， 所述 AC-DC转换电路通过 D C-DC电路与待识别主机相连， 所述 DC-DC电路通过控制电路与反馈 电路相连， 所述反馈电路与待识别主机相连。
[权利要求 10] 根据权利要求 9所述的一种用于特定主机充电的适配器， 其特征在于 ， 所述 AC-DC转换电路包括依次相连的桥式整流器、 滤波电路和变 压电路， 所述桥式整流器与市电相连， 所述变压电路与 DC-DC电路 相连， 所述变压电路输出第一电压。
[权利要求 11] 根据权利要求 9所述的一种用于特定主机充电的适配器， 其特征在于 ， 所述 DC-DC电路包括升压芯片， 所述升压芯片的使能引脚与所述 控制电路相连， 所述升压芯片的输入引脚与 AC-DC转换电路相连， 所述升压芯片的输出引脚与待识别主机相连。
[权利要求 12] 根据权利要求 9所述的一种用于特定主机充电的适配器， 其特征在于 ， 所述反馈电路包括相互连接的第一晶体振荡器、 第一反相器和第二 反相器， 所述第一晶体振荡器和第一反相器与待识别主机相连， 所述 第二反相器与控制电路相连； 进一步的， 所述反馈电路为特定主机中 的一个微控制器及微控制器的一个时钟输出引脚， 所述微控制器在第 一电压和第二电压下工作并产生周期性时钟输出， 所述时钟输出引脚 与控制电路相连。
[权利要求 13] 根据权利要求 9所述的一种用于特定主机充电的适配器， 其特征在于 ， 所述适配器设有与待识别主机相连的线缆， 所述线缆为 4芯线， 具 体包括电源引脚、 第一信号引脚、 第二信号引脚和接地引脚。
[权利要求 14] 根据权利要求 13所述的一种用于特定主机充电的适配器， 其特征在于 ， 所述线缆的两端接口分别为与适配器相连的 TYPE-A接口和与待识 别主机相连的 TYPE-C接口。
[权利要求 15] 根据权利要求 9所述的一种用于特定主机充电的适配器， 其特征在于 ， 还包括指示灯电路， 所述指示灯电路与控制电路相连。 [权利要求 16] 根据权利要求 15所述的一种用于特定主机充电的适配器， 其特征在于 ， 所述指示灯电路包括两个相互并联连接且分别与控制电路相连的 L
Figure imgf000013_0001
两个所述 LED灯的灯光颜色不相同。
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