WO2017219659A1 - 适配器 - Google Patents

适配器 Download PDF

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Publication number
WO2017219659A1
WO2017219659A1 PCT/CN2017/070284 CN2017070284W WO2017219659A1 WO 2017219659 A1 WO2017219659 A1 WO 2017219659A1 CN 2017070284 W CN2017070284 W CN 2017070284W WO 2017219659 A1 WO2017219659 A1 WO 2017219659A1
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WO
WIPO (PCT)
Prior art keywords
resistor
output
circuit
adapter
module
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2017/070284
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English (en)
French (fr)
Inventor
陈建忠
杨寄桃
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Chuangwei RGB Electronics Co Ltd
Original Assignee
Shenzhen Chuangwei RGB Electronics Co Ltd
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 Shenzhen Chuangwei RGB Electronics Co Ltd filed Critical Shenzhen Chuangwei RGB Electronics Co Ltd
Publication of WO2017219659A1 publication Critical patent/WO2017219659A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H02M7/12—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/21—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/217—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02J7/042—
    • 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
    • H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2207/00—Details of circuit arrangements for charging or discharging batteries or supplying loads from batteries
    • H02J2207/40—Details of circuit arrangements for charging or discharging batteries or supplying loads from batteries adapted for charging from various sources, e.g. AC, DC or multivoltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries

Definitions

  • the present invention relates to the field of electronic circuit technologies, and in particular, to an adapter.
  • the traditional adapter can only output a constant voltage, so that the adapter can only be paired with one type of powered device.
  • the output 5V adapter can only supply power to the mobile phone; the output 12V adapter can only supply power to the TV. This has resulted in a large number of adapters for the market for electrical equipment, resulting in waste of social resources and an increase in the cost of additional adapters for electronic products.
  • the main object of the present invention is to provide an adapter that aims to unify the standards of various adapters on the market, improve the applicability of the adapter, and save resources.
  • the present invention provides an adapter including a switching power supply module, a communication module, and a charging interface;
  • the charging interface connects the adapter with the powered device; the powered device sends a power supply requirement protocol signal to the communication module;
  • the communication module receives the power supply requirement protocol signal and controls the switching power supply module to output a corresponding voltage value and current value according to the power supply demand protocol signal.
  • the adapter further includes a discharge module; when the charging interface pulls out the power device, the communication module controls the discharge module to be turned on, and discharges the switch power module.
  • the switching power supply module includes a power management circuit, a switch circuit, a transformer, a constant voltage control circuit, a first rectification filter circuit, and a second rectification filter circuit;
  • the transformer includes a primary coil and a secondary coil; a driving end of the circuit is connected to the controlled end of the switching circuit, a feedback end of the power management circuit is connected to an output end of the constant voltage control circuit; an output end of the switching circuit is connected to a primary winding of the transformer The first end is connected, the input end of the switch circuit is grounded; the input end of the first rectifying and filtering circuit is connected to the mains, the output end of the first rectifying and filtering circuit and the second end of the primary coil of the transformer Connecting; the input ends of the second filter rectifier circuit are respectively connected to the first end and the second end of the secondary coil, and the output end of the second rectification filter circuit is connected to the charging interface; the constant voltage control circuit The sampling end is connected to the output end of the second rectifying filter circuit; the regulating end of the
  • the charging interface is a USB Type-C interface.
  • the second rectifying and filtering circuit includes a first diode, a first inductor, a first capacitor, and a second capacitor; an anode of the first diode is connected to a first end of the secondary coil, a cathode of the first diode is connected to the first end of the inductor; a second end of the first inductor is connected to the charging interface; a first end of the first capacitor and the first inductor The first end of the first capacitor is connected to the ground, the second end of the second capacitor is connected to the second end of the first capacitor, and the second end of the second capacitor is grounded.
  • the constant voltage control circuit includes an optical coupler, a first resistor, a second resistor, a third resistor, a fourth resistor, and a voltage reference chip; an execution input end of the optocoupler and the power management circuit a feedback end connection, the output end of the optical coupler is grounded; a first end of the first resistor is coupled to a cathode of the first diode, and a second end of the first resistor is via the a second resistor is connected to the output end of the voltage reference chip; a first end of the third resistor is connected to the second end of the first inductor, and a second end of the third resistor is grounded via the fourth resistor
  • the input end of the voltage reference chip is grounded, the reference end of the voltage reference chip is connected to the second end of the third resistor; the control input end of the optical coupler and the second end of the first resistor Connected, the control output of the optocoupler is coupled to the second end of the third resistor.
  • the constant voltage control circuit further includes a fifth resistor and a third capacitor; a first end of the fifth resistor is connected to an output end of the voltage reference chip, and a second end of the fifth resistor is a first end of the third capacitor is connected, a second end of the third capacitor is connected to a second end of the third resistor; an output end of the voltage reference chip is further connected to a control output of the optocoupler connection.
  • the communication module includes a communication control chip, a sixth resistor, and a seventh resistor;
  • the communication control chip includes a first signal input end, a second signal input end, a first detection end, a second detection end, and a first An adjustment end and a second adjustment end;
  • the first signal input end and the second signal input end of the communication control chip are both grounded, and the sixth resistor is connected to the first signal input end and the second signal input end
  • the first detecting end and the second signal detecting end of the communication control chip are both connected to the charging interface;
  • the first adjusting end is connected to the control input end of the optical coupler, and the second adjustment The terminal is connected to the control output of the optical coupler via the seventh resistor.
  • the communication module reads the power of the power device, and adjusts the output power of the power module according to the power consumption of the power device.
  • the adapter further includes a protection module, an input end of the protection module is connected to the output end of the second rectifying and filtering circuit, an output end of the protection module is connected to the charging interface, and the protection module is The control terminal is connected to the control end of the communication module.
  • the protection module includes a first MOS transistor and a second MOS transistor
  • the communication control chip further includes a second driving end, a third driving end, a power input end, and a detecting control end; a gate is connected to the second driving end, a source of the first MOS transistor is connected to a second end of the first inductor, and a drain of the first MOS transistor and a drain of the second MOS transistor a pole connection; a source of the second MOS transistor is connected to the charging interface, a gate of the second MOS transistor is connected to the third driving end; and the power input end and the first MOS transistor The source is connected, and the detection control terminal is connected to the drain of the second MOS transistor.
  • the discharge module includes an eighth resistor, a ninth resistor, a tenth resistor, and a triode
  • the communication control chip further includes a first driving end; a base of the triode is connected to the first driving end, The emitter of the triode is grounded; the first end of the eighth resistor is connected to the second end of the first inductor, and the second end of the eighth resistor is connected to the collector of the triode;
  • the nine resistors and the tenth resistor are both connected in parallel between the first end of the eighth resistor and the second end of the eighth resistor.
  • the switching power supply module further includes an EMI filter circuit and an AC input plug, wherein an input end of the EMI filter circuit is electrically connected to the AC input plug, and an output end of the EMI filter circuit and the first rectification filter Circuit connection.
  • the technical solution of the present invention forms an adapter by setting a charging interface, a communication module, and a switching power supply module.
  • the charging module reads the charging voltage value and the charging current value of the electric device, and then adjusts the voltage and current corresponding to the output of the control switching power supply module, so that a plurality of different voltage and current values can be output by using only one type of adapter. Therefore, it can meet the needs of a variety of different working voltage requirements, improve the applicability of the adapter, and save social resources.
  • FIG. 2 is a schematic diagram of a charging step of the adapter of the present invention.
  • Figure 3 is a functional block diagram of a further embodiment of the adapter of the present invention.
  • FIG. 4 is a schematic structural view of an embodiment of an adapter of the present invention.
  • first, second, and the like in the present invention are used for the purpose of description only, and are not to be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” or “second” may include at least one of the features, either explicitly or implicitly.
  • the technical solutions between the various embodiments may be combined with each other, but must be based on the realization of those skilled in the art, and when the combination of the technical solutions is contradictory or impossible to implement, it should be considered that the combination of the technical solutions does not exist. It is also within the scope of protection required by the present invention.
  • the present invention proposes an adapter.
  • the adapter includes a charging interface 100, a switching power supply module 200, and a communication module 300 for connecting with a powered device.
  • the charging process includes the following steps:
  • the power device sends a power supply requirement protocol signal to the communication module 300;
  • the communication module 300 receives the power supply requirement protocol signal and controls the switching power supply module 200 to output a corresponding voltage value and current value according to the power supply demand protocol signal.
  • a protocol communication module is disposed in the power device, and the protocol communication module burns software, and stores information related to charging.
  • the electrical device sends a power supply requirement protocol signal
  • the power supply demand protocol signal includes data such as a rated voltage, a rated current, an overcurrent protection value of the useful electrical device, such as a power supply requirement protocol signal. 01011, representing the power demand of the electrical equipment rated 12V, 1A, overcurrent protection value of 1.5A.
  • the communication module 300 receives the power supply requirement protocol signal, the voltage and current output by the switching power supply module 200 are controlled to be voltage values and current values required by the protocol communication module.
  • Such protocol signals are common standard signals developed by international regulations. According to this standard, the power supply parameters of the electrical equipment and the output parameters of the adapter are unified to match the power receiving and power supply requirements.
  • the adapter can supply power to a variety of electrical devices such as mobile phones, televisions, and notebook computers.
  • the technical solution of the present invention forms an adapter by providing the charging interface 100, the switching power supply module 200, and the communication module 300.
  • the voltage threshold range and the current threshold range of the power device are read by the communication module 300, and then the voltage and current corresponding to the required output are controlled by the switching power supply module 200, so that a plurality of different voltage value currents can be output by using only one type of adapter.
  • the value which can meet a variety of different working voltage power equipment, effectively unifies the standard of most adapters in the market, improves the applicability of the adapter, saves social resources, and reduces the cost of the product adapter.
  • the adapter further includes a discharge module 400.
  • the communication module 300 controls the discharge module 400 to be turned on. Discharge.
  • the switching power supply module 200 includes a power management circuit 210, a switch circuit 220, a constant voltage control circuit 230, a first rectification and filtering circuit 240, a second rectification and filtering circuit 250, and a transformer 260.
  • the transformer 260 includes a primary coil and a driving end of the power management circuit 210 is connected to a controlled end of the switching circuit 220, and a feedback end of the power management circuit 210 is connected to an output end of the constant voltage control circuit 230;
  • the output end of the circuit 220 is connected to the first end of the primary coil of the transformer 260, the input end of the switch circuit 220 is grounded;
  • the input end of the first rectifying and filtering circuit 240 is connected to the mains, the first rectification An output end of the filter circuit 240 is connected to a second end of the primary coil of the transformer 260;
  • an input end of the second filter rectification circuit is respectively connected to the first end and the second end of the secondary coil, the second rectification An output end of the filter circuit 250 is connected to the charging interface 100;
  • a sampling end of the constant voltage control circuit 230 is connected to an output end of the second rectifying and filtering circuit 250; Adjusting end 230 is connected to the output terminal 300 of the communication module.
  • the power management circuit 210 drives the switch circuit 220 to be turned on or off, converts the DC power input by the first rectification and filtering circuit 240 into a pulsating DC power, and converts the pulsating DC power into another voltage through the transformer 260.
  • the value of the pulsating direct current is rectified and filtered by the second rectifying and filtering circuit 250, and the voltage and current outputted by the transformer are stabilized by the constant voltage control loop, and finally the stable direct current is output.
  • the charging interface 100 is a USB Type-C interface.
  • USB The Type-C interface is a new USB standard interface that is hot swappable and can be plugged in and out. Easy to understand, USB The Type-C interface may be a plug or a socket, which is correspondingly set according to whether the interface on the powered device is a socket or a plug.
  • the USB The Type-C interface includes a power terminal VBUS, a ground terminal SGND, a first detection terminal CC1, and a second detection terminal CC2.
  • the second rectifying and filtering circuit 250 includes a first diode D1, a first inductor L1, a first capacitor C1, and a first capacitor C2; an anode and a cathode of the first diode D1.
  • a first end of the secondary coil is connected, a cathode of the first diode D1 is connected to a first end of the first inductor L1, and a second end of the first inductor L1 is connected to the charging interface 100
  • the first end of the first capacitor C1 is connected to the first end of the first inductor L1, the second end of the first capacitor C1 is grounded, and the first end of the first capacitor C2 is opposite to the first A second end of the inductor L1 is connected, and a second end of the first capacitor C2 is grounded.
  • the constant voltage control circuit 230 includes a photocoupler U1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, and a voltage reference chip Z1; execution of the optocoupler U1
  • the input end is connected to the feedback end of the power management circuit 210, the output end of the optical coupler U1 is grounded; the first end of the first resistor R1 is connected to the cathode of the first diode D1, The second end of the first resistor R1 is connected to the output end of the voltage reference chip Z1 via the second resistor R2; the first end of the third resistor R3 is connected to the second end of the first inductor L1
  • the second end of the third resistor R3 is grounded via the fourth resistor R4; the input end of the voltage reference chip Z1 is grounded, the reference end of the voltage reference chip Z1 and the second end of the third resistor R3
  • the control input of the optical coupler U1 is connected to the second end of the first resistor R
  • first resistor R1 and the second resistor R2 are both used for current limiting, wherein the first resistor R1 is a power supply current limiting resistor, and the second resistor R2 is a pre-start current limiting resistor of the voltage reference chip Z1.
  • the third resistor R3 and the fourth resistor R4 are voltage dividing sampling resistors. The divided voltage sampling resistor supplies the detected sampled voltage to the voltage reference terminal of the voltage reference chip Z1 to control the magnitude of the current of the optocoupler, thereby controlling the duty ratio of the PWM control signal outputted by the power management circuit 210 to the switch circuit 220, so that The output voltage is constant. For example, when the output voltage of the transformer T (ie, the transformer 260 in FIG.
  • the constant voltage control circuit 230 further includes a fifth resistor R5 and a third capacitor C3; a first end of the fifth resistor R5 is connected to an output end of the voltage reference chip Z1, and the fifth resistor R5
  • the second end of the third capacitor C3 is connected to the second end of the third capacitor C3, and the second end of the third capacitor C3 is connected to the second end of the third resistor R3; Connected to the control output of the optocoupler U1.
  • the fifth resistor R5 and the third capacitor C3 form a voltage compensation loop, which effectively eliminates external electromagnetic interference, so that the output voltage of the transformer T is more stable.
  • the communication module 300 includes a communication control chip U2, a sixth resistor R6, and a seventh resistor R7.
  • the communication control chip U2 includes a first signal input terminal SEN, a second signal input terminal SEP, and a first detection terminal CC1.
  • first detecting end CC1 and the second detecting end CC2 of the communication control chip U2 are respectively connected to the USB.
  • the first detection terminal CC1 of the Type-C interface is connected to the second detection terminal CC2, and the ground terminal SGND of the USB Type-C interface is grounded, USB.
  • the power terminal VBUS of the Type-C interface is connected to the second end of the first inductor L1.
  • the communication control chip U2 adopts the Roma semiconductor BM92T series chip, and the chip of the model BM92T20MWV is preferably used.
  • the sixth resistor R6 is a load overcurrent detecting resistor
  • the seventh resistor R7 is a current limiting resistor.
  • the discharge module 400 includes an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, and a transistor K1.
  • the communication control chip U2 further includes a first driving end DRI1; a base of the transistor K1 The first driving end DRI is connected, the emitter of the transistor K1 is grounded; the first end of the eighth resistor R8 is connected to the second end of the first inductor L1, and the second end of the eighth resistor R8 is The terminal is connected to the collector of the transistor K1; the ninth resistor R9 and the tenth resistor R10 are both connected in parallel to the first end of the eighth resistor R8 and the second end of the eighth resistor R8. between.
  • the first driving end DRI of the communication control chip U2 When the adapter pulls out the power device, the first driving end DRI of the communication control chip U2 outputs a high level, and the control transistor K1 is turned on, and the electric energy stored in the first capacitor C1 and the first capacitor C2 passes through the eighth resistor R8, The nine resistors R9 and the tenth resistor R10 are discharged to prevent the excessive excessive voltage of the capacitor from causing damage to the subsequently charged electrical equipment.
  • the communication module 300 reads the power of the power device, and adjusts the output power of the switching power module according to the power consumption of the power device.
  • the protocol communication module in the powered device records the power demand of the corresponding powered device, and the requirement is transmitted to the communication module 300 through the Type-C interface, specifically Via USB
  • the first detecting end CC1 and the second detecting end CC2 of the Type-C interface are transmitted to the communication control chip U2.
  • the communication control chip U2 controls the power management circuit 210 through the constant voltage control circuit 230.
  • the transformer 260 can output the corresponding required maximum power to speed up the charging speed of the powered device with the power storage function.
  • the adapter further includes a protection module 500, and an input end of the protection module 500 is connected to an output end of the second rectification and filtering circuit 250, and an output end of the protection module 500 is connected to the charging interface 100.
  • the controlled end of the protection module 500 is connected to the control end of the communication module 300.
  • the protection module 500 includes a first MOS transistor Q1 and a second MOS transistor Q2.
  • the communication control chip U2 further includes a second driving terminal DRI2, a third driving terminal DRI3, a power input terminal VEX, and a detection control terminal SRC.
  • a gate of the first MOS transistor Q1 is connected to the second driving terminal DRI2, a source of the first MOS transistor Q1 is connected to a second end of the first inductor L1, and a drain of the first MOS transistor Q1 a pole is connected to a drain of the second MOS transistor Q2; a source of the second MOS transistor Q2 is connected to the charging interface 100, and a gate of the second MOS transistor Q2 and the third driving terminal DRI3
  • the power input terminal VEX is connected to the source of the first MOS transistor Q1, and the detection control terminal SRC is connected to the drain of the second MOS transistor Q2.
  • the sixth resistor R6 in the communication module 300 is used to detect the load circuit current.
  • the second MOS transistor is controlled to be turned on to supply power to the electrical equipment.
  • the communication control chip controls the first MOS transistor to be turned on, and outputs power to the power-consuming device after being output through the second MOS transistor Q2.
  • the communication control chip controls the second NMOS transistor to be turned off, preventing the voltage from being reversed due to excessive voltage when plugging in other different powered devices, thereby causing damage to the front end adapter.
  • the power management circuit 210 includes a power management chip U3, and the power management chip U3 is implemented by using a BM1P061FJ chip of Roma Semiconductor.
  • the switch circuit 220 includes a third MOS transistor Q3 and an eleventh resistor R11. The gate of the third MOS transistor Q3 is connected to the driving terminal OUT of the power management chip U3, and the drain of the third MOS transistor Q3 is A second end of the primary winding of the transformer T is connected, and a source of the third MOS transistor Q3 is grounded via the eleventh resistor R11.
  • the switching power supply module 200 further includes an EMI filter circuit 270 and an AC input plug J2.
  • the input end of the EMI filter circuit 270 is electrically connected to the AC input plug J2, and the output of the EMI filter circuit 270 is The terminal is connected to the first rectifying and filtering circuit 240.
  • the AC plug J2 is used to plug into a common outlet to access the mains, and the EMI filter circuit 270 is used to filter out electromagnetic interference.
  • a protocol communication module is designed on the main board of the TV.
  • the software is programmed in the module to record the rated voltage of the TV set at 12V, the rated current value of 2A and the overcurrent protection value of 3A. .
  • the protocol communication module in the power device controls the rated voltage value 12V and the rated current value 2A through the first detecting terminal CC1 and the second detecting terminal CC2 under the control of its internal software.
  • the stream protection value 3A informs the communication control chip U2 in the adapter.
  • the communication module 300 in the adapter also burns the corresponding software, and through the first detection terminal CC1 and the second detection terminal CC2, the rated voltage and current and the overcurrent protection value 3A required by the protocol communication module in the television are obtained, so that the first adjustment is passed.
  • the terminal FB and the second regulating terminal VCONN control the constant voltage control circuit, thereby controlling the power management chip U3, so that the transformer T outputs the voltage value and current value required by the power device.
  • the technical solution of the present invention reads the voltage parameter and the current parameter of the electrical equipment through the communication module 300, and then adjusts the voltage and current output by the switching power supply module 200, so that the adapter outputs a large range of voltage and current, thereby being able to satisfy a plurality of different
  • the working voltage of the electrical equipment such as mobile phones, computers, televisions, etc., improves the applicability of the adapter, so that the adapters between different electrical equipment can be universal, reducing the idleness of different types of adapters, saving social resources.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Dc-Dc Converters (AREA)

Abstract

一种适配器，包括开关电源模块（200）、通信模块（300）及充电接口（100）；充电接口（100），将适配器与用电设备进行连接；用电设备向通信模块（300）发出供电需求协议信号；通信模块（300），接收供电需求协议信号并根据该供电需求协议信号控制开关电源模块（200）输出对应的电压值和电流值。上述技术方案统一了市面上多种适配器的标准，提高适配器的适用性，节约资源，又实现了快速充电。

Description

适配器
技术领域
本发明涉及电子电路技术领域，特别涉及一种适配器。
背景技术
传统适配器只能输出一种恒定的电压，使得该适配器只能配对一种用电设备，如输出的5V适配器只能给手机供电；输出12V的适配器只能给电视机供电。这使得市面用电设备的适配器种类较多，造成社会资源浪费，同时也增加了电子产品需附加适配器的成本。
发明内容
本发明的主要目的是提供一种适配器，旨在统一市面上多种适配器的标准，提高适配器的适用性，节约资源。
为实现上述目的，本发明提出了一种适配器，该适配器包括开关电源模块、通信模块及充电接口；其中，
所述充电接口，将适配器与用电设备进行连接；所述用电设备向所述通信模块发出供电需求协议信号;
所述通信模块，接收所述供电需求协议信号并根据该供电需求协议信号控制所述开关电源模块输出对应的电压值和电流值。
优选地，所述适配器还包括放电模块；所述通信模块在所述充电接口拔出用电设备时，控制所述放电模块开启，对所述开关电源模块进行放电。
优选地，所述开关电源模块包括电源管理电路、开关电路、变压器、恒压控制电路、第一整流滤波电路及第二整流滤波电路；所述变压器包括初级线圈及次级线圈；所述电源管理电路的驱动端与所述开关电路的受控端连接，所述电源管理电路的反馈端与所述恒压控制电路的输出端连接；所述开关电路的输出端与所述变压器的初级线圈的第一端连接，所述开关电路的输入端接地；所述第一整流滤波电路的输入端接入市电，所述第一整流滤波电路的输出端与所述变压器的初级线圈的第二端连接；第二滤波整流电路的输入端分别与所述次级线圈的第一端和第二端连接，所述第二整流滤波电路的输出端与所述充电接口连接；所述恒压控制电路的采样端与所述第二整流滤波电路的输出端连接；所述恒压控制电路的调节端与所述通信模块的输出端连接。
优选地，所述充电接口为USB Type-C接口。
优选地，所述第二整流滤波电路包括第一二极管、第一电感、第一电容及第二电容；所述第一二极管的阳极与所述次级线圈的第一端连接，所述第一二极管的阴极与所述电感的第一端连接；所述第一电感的第二端与所述充电接口连接；所述第一电容的第一端与所述第一电感的第一端连接，所述第一电容的第二端接地；所述第二电容的第一端与所述第一电感的第二端连接，所述第二电容的第二端接地。
优选地，所述恒压控制电路包括光耦合器、第一电阻、第二电阻、第三电阻、第四电阻、及电压基准芯片；所述光耦合器的执行输入端与所述电源管理电路的反馈端连接，所述光耦合器的执行输出端接地；所述第一电阻的第一端与所述第一二极管的阴极连接，所述第一电阻的第二端经所述第二电阻与所述电压基准芯片的输出端连接；所述第三电阻的第一端与所述第一电感的第二端连接，所述第三电阻的第二端经所述第四电阻接地；所述电压基准芯片的输入端接地，所述电压基准芯片的参考端与所述第三电阻的第二端连接；所述光耦合器的控制输入端与所述第一电阻的第二端连接，所述光耦合器的控制输出端与所述第三电阻的第二端连接。
优选地，所述恒压控制电路还包括第五电阻及第三电容；所述第五电阻的第一端与所述电压基准芯片的输出端连接，所述第五电阻的第二端与所述第三电容的第一端连接，所述第三电容的第二端与所述第三电阻的第二端连接；所述电压基准芯片的输出端还与所述光耦合器的控制输出端连接。
优选地，所述通信模块包括通信控制芯片、第六电阻及第七电阻；所述通信控制芯片包括第一信号输入端、第二信号输入端、第一检测端、第二检测端、第一调节端及第二调节端；所述通信控制芯片的第一信号输入端和第二信号输入端均接地，所述第六电阻连接于所述第一信号输入端和所述第二信号输入端之间；所述通信控制芯片的第一检测端和第二信号检测端均与所述充电接口连接；所述第一调节端与所述光耦合器的控制输入端连接，所述第二调节端经所述第七电阻与所述光耦合器的控制输出端连接。
优选地，所述通信模块读取用电设备功率，根据用电设备功率大小调节所述开关电源模块的输出功率。
优选地，所述适配器还包括保护模块，所述保护模块的输入端与所述第二整流滤波电路输出端连接，所述保护模块的输出端与所述充电接口连接，所述保护模块的受控端与所述通信模块的控制端连接。
优选地，所述保护模块包括第一MOS管和第二MOS管，所述通信控制芯片还包括第二驱动端、第三驱动端、电源输入端及检测控制端；所述第一MOS管的门极与所述第二驱动端连接，所述第一MOS管的源极与所述第一电感的第二端连接，所述第一MOS管的漏极与所述第二MOS管的漏极连接；所述第二MOS管的源极与所述充电接口连接，所述第二MOS管的门极与所述第三驱动端连接；所述电源输入端与所述第一MOS管的源极连接，所述检测控制端与所述第二MOS管的漏极连接。
优选地，所述放电模块包括第八电阻、第九电阻、第十电阻、及三极管，所述通信控制芯片还包括第一驱动端；所述三极管的基极与所述第一驱动端连接，所述三极管的发射极接地；所述第八电阻的第一端与所述第一电感的第二端连接，所述第八电阻的第二端与所述三极管的集电极连接；所述第九电阻、及所述第十电阻均并联于所述第八电阻的第一端和所述第八电阻的第二端之间。
优选地，所述开关电源模块还包括EMI滤波电路及交流输入插头，所述EMI滤波电路的输入端与所述交流输入插头电连接，所述EMI滤波电路的输出端与所述第一整流滤波电路连接。
本发明技术方案通过设置充电接口、通信模块、及开关电源模块，形成了一种适配器。通过通信模块读取用电设备的充电电压值和充电电流值，再调节控制开关电源模块输出的对应需求的电压及电流，使得仅用此一种适配器就可输出多种不同的电压电流值，从而能够满足多种不同工作电压需求的用电设备，提高了适配器的适用性，节约了社会资源。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图示出的结构获得其他的附图。
图1为本发明适配器一实施例的功能模块意图；
图2为本发明适配器充电步骤示意图；
图3为本发明适配器进一步实施例的功能模块意图；
图4为本发明适配器一实施例的结构示意图。
附图标号说明：
标号 名称 标号 名称
100 充电接口 R7 第七电阻
200 开关电源模块 R8 第八电阻
210 电源管理电路 R9 第九电阻
220 开关电路 R10 第十电阻
230 恒压控制电路 R11 第十一电阻
240 第一整流滤波电路 K1 三极管
250 第二整流滤波电路 Q1 第一MOS管
260 变压器 Q2 第二MOS管
270 EMI滤波电路 Q3 第三MOS管
300 通信模块 C1 第一电容
400 放电模块 C2 第二电容
500 保护模块 C3 第三电容
R1 第一电阻 J1 充电接口
R2 第二电阻 J2 交流输入插头
R3 第三电阻 U1 光耦合器
R4 第四电阻 U2 通信控制芯片
R5 第五电阻 U3 电源管理芯片
R6 第六电阻 Z1 电压基准芯片
本发明目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
需要说明，本发明实施例中所有方向性指示（诸如上、下、左、右、前、后……）仅用于解释在某一特定姿态（如附图所示）下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
另外，在本发明中涉及“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本发明要求的保护范围之内。
本发明提出一种适配器。
参照图1及图2，在本发明实施例中，该适配器包括用于与用电设备进行连接的充电接口100、开关电源模块200、及通信模块300。在进行充电时，将适配器与用电设备进行连接；充电过程包括以下步骤：
S1：所述用电设备向所述通信模块300发出供电需求协议信号;
S2：所述通信模块300接收所述供电需求协议信号并根据该供电需求协议信号控制所述开关电源模块200输出对应的电压值和电流值。
易于理解的是，用电设备中设置有协议通信模块，该协议通信模块中烧录有软件，存储有与充电相关的信息。当适配器的充电接口100插入用电设备时，用电设备发出供电需求协议信号，该供电需求协议信号包含有用电设备的额定电压、额定电流、过流保护值等数据，例如供电需求协议信号01011，代表用电设备额定需12V，1A，过流保护值为1.5A的用电需求。在通信模块300接收到供电需求协议信号后，控制所述开关电源模块200输出的电压及电流为协议通信模块所需求的电压值和电流值。此类的协议信号为国际行规制定的通用标准讯号，按此标准统一用电设备的需求供电参数和适配器的输出参数，使之受电和供电需求相匹配。该适配器可给手机，电视机，笔记本电脑等多种用电设备进行供电。
本发明技术方案通过设置充电接口100、开关电源模块200、及通信模块300，形成了一种适配器。通过通信模块300读取用电设备的电压阈值范围和电流阈值范围，再调节控制开关电源模块200输出对应需求的电压及电流，使得仅用此一种适配器就可输出多种不同的电压值电流值，从而能够满足多种不同工作电压的用电设备，有效地统一了市面多数适配器的标准，提高了适配器的适用性，节约了社会资源，减少了产品附加适配器的成本。
进一步地，请参照图2，所述适配器还包括放电模块400；所述通信模块300在所述充电接口100拔出用电设备时，控制所述放电模块400开启，对所述开关电源模块200进行放电。
具体地，所述开关电源模块200包括电源管理电路210、开关电路220、恒压控制电路230、第一整流滤波电路240、第二整流滤波电路250及变压器260；所述变压器260包括初级线圈及次级线圈；所述电源管理电路210的驱动端与所述开关电路220的受控端连接，所述电源管理电路210的反馈端与所述恒压控制电路230的输出端连接；所述开关电路220的输出端与所述变压器260的初级线圈的第一端连接，所述开关电路220的输入端接地；所述第一整流滤波电路240的输入端接入市电，所述第一整流滤波电路240的输出端与所述变压器260的初级线圈的第二端连接；第二滤波整流电路的输入端分别与所述次级线圈的第一端和第二端连接，所述第二整流滤波电路250的输出端与所述充电接口100连接；所述恒压控制电路230的采样端与所述第二整流滤波电路250的输出端连接；所述恒压控制电路230的调节端与所述通信模块300的输出端连接。
其中，所述电源管理电路210驱动所述开关电路220导通或关断，将第一整流滤波电路240输入的直流电转换成脉动的直流电，通过变压器260，将脉动的直流电转成另一种电压值的脉动直流电，再经过第二整流滤波电路250进行整流滤波，并通过恒压控制环路稳定变压器输出的电压和电流，最终输出稳定的直流电。
本实施例中，所述充电接口100为USB Type-C接口。USB Type-C接口是一种USB标准的新型接口，它的特点是支持热插拔，而且可以正反向插拔。易于理解的是，USB Type-C接口可以是插头或者插座，其根据用电设备上的接口是插座或者插头而对应设置。该USB Type-C接口包括电源端VBUS、接地端SGND、第一检测端CC1及第二检测端CC2。
参照图3，具体地，所述第二整流滤波电路250包括第一二极管D1、第一电感L1、第一电容C1及第一电容C2；所述第一二极管D1的阳极与所述次级线圈的第一端连接，所述第一二极管D1的阴极与所述第一电感L1的第一端连接；所述第一电感L1的第二端与所述充电接口100连接；所述第一电容C1的第一端与所述第一电感L1的第一端连接，所述第一电容C1的第二端接地；所述第一电容C2的第一端与所述第一电感L1的第二端连接，所述第一电容C2的第二端接地。
具体地，所述恒压控制电路230包括光耦合器U1、第一电阻R1、第二电阻R2、第三电阻R3、第四电阻R4、及电压基准芯片Z1；所述光耦合器U1的执行输入端与所述电源管理电路210的反馈端连接，所述光耦合器U1的执行输出端接地；所述第一电阻R1的第一端与所述第一二极管D1的阴极连接，所述第一电阻R1的第二端经所述第二电阻R2与所述电压基准芯片Z1的输出端连接；所述第三电阻R3的第一端与所述第一电感L1的第二端连接，所述第三电阻R3的第二端经所述第四电阻R4接地；所述电压基准芯片Z1的输入端接地，所述电压基准芯片Z1的参考端与所述第三电阻R3的第二端连接；所述光耦合器U1的控制输入端与所述第一电阻R1的第二端连接，所述光耦合器U1的控制输出端与所述第三电阻R3的第二端连接。
需要说明的是，第一电阻R1及第二电阻R2均用于限流，其中第一电阻R1为供电限流电阻，第二电阻R2为电压基准芯片Z1的预启动限流电阻。第三电阻R3及第四电阻R4为分压采样电阻。分压采样电阻将检测采样得的电压输送至电压基准芯片Z1的电压参考端，来控制光耦的电流大小，进而控制电源管理电路210输出至开关电路220的PWM控制信号的占空比，使得输出的电压恒定。例如：当变压器T（即图2中的变压器260）输出电压降低，第三电阻R3和第四电阻R4采样的电压变低，从而控制电压基准芯片Z1阴极到阳极的电流减小，使得光耦合器U1控制输入端流入的电流减小，进而使光耦合器U1执行输入端的电压增大，在电源管理电路210控制输出至开关电路220的PWM控制信号的占空比增大，最后使变压器T输出的电压增大，实现稳压效果。在变压器T输出电压偏大时，其调节过程同理，此处不再赘述。
进一步地，所述恒压控制电路230还包括第五电阻R5及第三电容C3；所述第五电阻R5的第一端与所述电压基准芯片Z1的输出端连接，所述第五电阻R5的第二端与所述第三电容C3的第一端连接，所述第三电容C3的第二端与所述第三电阻R3的第二端连接；所述电压基准芯片Z1的输出端还与所述光耦合器U1的控制输出端连接。
第五电阻R5及第三电容C3构成电压补偿环路，有效消除外部电磁干扰，使得变压器T输出电压更加的稳定。
具体地，所述通信模块300包括通信控制芯片U2、第六电阻R6及第七电阻R7；所述通信控制芯片U2包括第一信号输入端SEN、第二信号输入端SEP、第一检测端CC1、第二检测端CC2、第一调节端FB及第二调节端VCONN；所述通信控制芯片U2的第一信号输入端SEN和第二信号输入端SEP均接地，所述第六电阻R6连接于所述第一信号输入端SEN和所述第二信号输入端SEP之间；所述通信控制芯片U2的第一检测端CC1和第二信号检测端均与所述充电接口100连接；所述第一调节端GP与所述光耦合器U1的控制输入端连接，所述第二调节端VCONN经所述第七电阻R7与所述光耦合器U1的控制输出端连接。
需要说明的是，通信控制芯片U2的第一检测端CC1和第二检测端CC2分别与USB Type-C接口的第一检测端CC1和第二检测端CC2连接，USB Type-C接口的接地端SGND接地，USB Type-C接口的电源端VBUS与所述第一电感L1的第二端连接。
本实施例中，通信控制芯片U2采用罗姆半导体BM92T系列芯片，优先采用型号BM92T20MWV的芯片。其中第六电阻R6为负载过流检测电阻，第七电阻R7为限流电阻。
具体地，所述放电模块400包括第八电阻R8、第九电阻R9、第十电阻R10、及三极管K1，所述通信控制芯片U2还包括第一驱动端DRI1；所述三极管K1的基极与所述第一驱动端DRI连接，所述三极管K1的发射极接地；所述第八电阻R8的第一端与所述第一电感L1的第二端连接，所述第八电阻R8的第二端与所述三极管K1的集电极连接；所述第九电阻R9、及所述第十电阻R10均并联于所述第八电阻R8的第一端和所述第八电阻R8的第二端之间。
在适配器拔出用电设备时，通信控制芯片U2的第一驱动端DRI输出高电平，控制三极管K1导通，第一电容C1和第一电容C2中储存的电能通过第八电阻R8、第九电阻R9及第十电阻R10进行放电，以免电容余下的过高电压对后续进行充电的用电设备造成损坏。
进一步地，所述通信模块300读取用电设备功率，根据用电设备功率大小调节所述开关电源模块输出功率。
需要说明的是，当用电设备的功率需求较大时，用电设备中的协议通信模块会记录相应的用电设备功率需求，将这需求通过Type-C接口传递给通信模块300，具体是通过USB Type-C接口的第一检测端CC1、第二检测端CC2传输给通信控制芯片U2，通信控制芯片U2收到用电设备需求的最大电流后，通过恒压控制电路230控制电源管理电路210，进而使变压器260可输出相应的需求的最大功率，加快带有蓄电功能的用电设备的充电速度。
进一步地，所述适配器还包括保护模块500，所述保护模块500的输入端与所述第二整流滤波电路250输出端连接，所述保护模块500的输出端与所述充电接口100连接，所述保护模块500的受控端与所述通信模块300的控制端连接。
所述保护模块500包括第一MOS管Q1和第二MOS管Q2，所述通信控制芯片U2还包括第二驱动端DRI2、第三驱动端DRI3、电源输入端VEX及检测控制端SRC；所述第一MOS管Q1的门极与所述第二驱动端DRI2连接，所述第一MOS管Q1的源极与所述第一电感L1的第二端连接，所述第一MOS管Q1的漏极与所述第二MOS管Q2的漏极连接；所述第二MOS管Q2的源极与所述充电接口100连接，所述第二MOS管Q2的门极与所述第三驱动端DRI3连接；所述电源输入端VEX与所述第一MOS管Q1的源极连接，所述检测控制端SRC与所述第二MOS管Q2的漏极连接。
需要说明的是，通信模块300中的第六电阻R6用于检测负载电路电流。
需要说明的是，当检测控制端SRC检测到的变压器T输出电压为通信控制芯片U2设定的电压相同，控制第二MOS管导通，为用电设备供电。
当第一检测端CC1、第二检测端CC2检测到插入用电设备后，通信控制芯片控制第一MOS管导通，经第二MOS管Q2输出后给用电设备供电。当Type-C接头拔掉后，通信控制芯片控制第二NMOS管截止，防止插其他不同的用电设备时因电压过高，使电压反灌，造成对前端适配器的损坏。
本实施例中，所述电源管理电路210包括电源管理芯片U3，该电源管理芯片U3采用罗姆半导体的BM1P061FJ芯片实现。所述开关电路220包括第三MOS管Q3及第十一电阻R11，所述第三MOS管Q3的门极与电源管理芯片U3的驱动端OUT连接，所述第三MOS管Q3的漏极与变压器T的初级线圈的第二端连接，所述第三MOS管Q3的源极经所述第十一电阻R11接地。
本实施例中，所述开关电源模块200还包括EMI滤波电路270及交流输入插头J2，所述EMI滤波电路270的输入端与所述交流输入插头J2电连接，所述EMI滤波电路270的输出端与所述第一整流滤波电路240连接。其中交流插头J2用于插入常见的插座中，以接入市电，EMI滤波电路270用于滤除电磁干扰。
本实施例以电视机进行说明，现结合图4对本发明作进一步阐述：
当用电设备其需求为12V的电压，在电视的主板上设计有协议通信模块，在该模块内烧录软件，记录本电视机的额定电压值12V、额定电流值2A及过流保护值3A。
当将适配器的充电接口插入用电设备，用电设备中协议通信模块在其内部软件控制下，通过第一检测端CC1和第二检测端CC2，将额定电压值12V、额定电流值2A及过流保护值3A告知适配器中的通信控制芯片U2。适配器中的通信模块300也烧录了对应软件，通过第一检测端CC1和第二检测端CC2得知电视机中协议通信模块需求的额定电压电流及过流保护值3A，使通过第一调节端FB和第二调节端VCONN控制恒压控制电路，进而控制电源管理芯片U3，使变压器T输出用电设备所需求的电压值和电流值。
本发明技术方案通过通信模块300读取用电设备的电压参数和电流参数，再调节控制开关电源模块200输出的电压及电流，使得适配器输出较大范围的电压及电流，从而能够满足多种不同工作电压的用电设备，例如手机、电脑、电视机等，提高了适配器的适用性，使得不同用电设备之间的适配器可以通用，减少了不同型号种类的适配器的闲置，节约了社会资源。
以上所述仅为本发明的优选实施例，并非因此限制本发明的专利范围，凡是在本发明的发明构思下，利用本发明说明书及附图内容所作的等效结构变换，或直接/间接运用在其他相关的技术领域均包括在本发明的专利保护范围内。

Claims (13)

  1. 一种适配器，其特征在于，包括开关电源模块、通信模块及充电接口；
    所述充电接口，将适配器与用电设备进行连接；所述用电设备向所述通信模块发出供电需求协议信号;
    所述通信模块，接收所述供电需求协议信号并根据该供电需求协议信号控制所述开关电源模块输出对应的电压值和电流值。
  2. 如权利要求1所述的适配器，其特征在于，所述适配器还包括放电模块；所述通信模块在所述充电接口拔出用电设备时，控制所述放电模块开启，对所述开关电源模块进行放电。
  3. 如权利要求2所述的适配器，其特征在于，所述开关电源模块包括电源管理电路、开关电路、变压器、恒压控制电路、第一整流滤波电路及第二整流滤波电路；所述变压器包括初级线圈及次级线圈；所述电源管理电路的驱动端与所述开关电路的受控端连接，所述电源管理电路的反馈端与所述恒压控制电路的输出端连接；所述开关电路的输出端与所述变压器的初级线圈的第一端连接，所述开关电路的输入端接地；所述第一整流滤波电路的输入端接入市电，所述第一整流滤波电路的输出端与所述变压器的初级线圈的第二端连接；第二滤波整流电路的输入端分别与所述次级线圈的第一端和第二端连接，所述第二整流滤波电路的输出端与所述充电接口连接；所述恒压控制电路的采样端与所述第二整流滤波电路的输出端连接；所述恒压控制电路的调节端与所述通信模块的输出端连接。
  4. 如权利要求1所述的适配器，其特征在于，所述充电接口为USB Type-C接口。
  5. 如权利要求4所述的适配器，其特征在于，所述第二整流滤波电路包括第一二极管、第一电感、第一电容及第二电容；所述第一二极管的阳极与所述次级线圈的第一端连接，所述第一二极管的阴极与所述电感的第一端连接；所述第一电感的第二端与所述充电接口连接；所述第一电容的第一端与所述第一电感的第一端连接，所述第一电容的第二端接地；所述第二电容的第一端与所述第一电感的第二端连接，所述第二电容的第二端接地。
  6. 如权利要求5所述的适配器，其特征在于，所述恒压控制电路包括
    光耦合器、第一电阻、第二电阻、第三电阻、第四电阻、及电压基准芯片；所述光耦合器的执行输入端与所述电源管理电路的反馈端连接，所述光耦合器的执行输出端接地；所述第一电阻的第一端与所述第一二极管的阴极连接，所述第一电阻的第二端经所述第二电阻与所述电压基准芯片的输出端连接；所述第三电阻的第一端与所述第一电感的第二端连接，所述第三电阻的第二端经所述第四电阻接地；所述电压基准芯片的输入端接地，所述电压基准芯片的参考端与所述第三电阻的第二端连接；所述光耦合器的控制输入端与所述第一电阻的第二端连接，所述光耦合器的控制输出端与所述第三电阻的第二端连接。
  7. 如权利要求6所述的适配器，其特征在于，所述恒压控制电路还包括第五电阻及第三电容；所述第五电阻的第一端与所述电压基准芯片的输出端连接，所述第五电阻的第二端与所述第三电容的第一端连接，所述第三电容的第二端与所述第三电阻的第二端连接；所述电压基准芯片的输出端还与所述光耦合器的控制输出端连接。
  8. 如权利要求7所述的适配器，其特征在于，所述通信模块包括通信控制芯片、第六电阻及第七电阻；所述通信控制芯片包括第一信号输入端、第二信号输入端、第一检测端、第二检测端、第一调节端及第二调节端；所述通信控制芯片的第一信号输入端和第二信号输入端均接地，所述第六电阻连接于所述第一信号输入端和所述第二信号输入端之间；所述通信控制芯片的第一检测端和第二信号检测端均与所述充电接口连接；所述第一调节端与所述光耦合器的控制输入端连接，所述第二调节端经所述第七电阻与所述光耦合器的控制输出端连接。
  9. 如权利要求1所述的适配器，其特征在于，所述通信模块读取用电设备功率，根据用电设备功率大小调节所述开关电源模块输出的功率。
  10. 如权利要求8所述的适配器，其特征在于，所述适配器还包括保护模块，所述保护模块的输入端与所述第二整流滤波电路输出端连接，所述保护模块的输出端与所述充电接口连接，所述保护模块的受控端与所述通信模块的控制端连接。
  11. 如权利要求10所述的适配器，其特征在于，所述保护模块包括第一MOS管和第二MOS管，所述通信控制芯片还包括第二驱动端、第三驱动端、电源输入端及检测控制端；所述第一MOS管的门极与所述第二驱动端连接，所述第一MOS管的源极与所述第一电感的第二端连接，所述第一MOS管的漏极与所述第二MOS管的漏极连接；所述第二MOS管的源极与所述充电接口连接，所述第二MOS管的门极与所述第三驱动端连接；所述电源输入端与所述第一MOS管的源极连接，所述检测控制端与所述第二MOS管的漏极连接。
  12. 如权利要求2所述的适配器，其特征在于，所述放电模块包括第八电阻、第九电阻、第十电阻、及三极管，所述通信控制芯片还包括第一驱动端；所述三极管的基极与所述第一驱动端连接，所述三极管的发射极接地；所述第八电阻的第一端与所述第一电感的第二端连接，所述第八电阻的第二端与所述三极管的集电极连接；所述第九电阻、及所述第十电阻均并联于所述第八电阻的第一端和所述第八电阻的第二端之间。
  13. 如权利要求3所述的适配器，其特征在于，所述开关电源模块还包括EMI滤波电路及交流输入插头，所述EMI滤波电路的输入端与所述交流输入插头电连接，所述EMI滤波电路的输出端与所述第一整流滤波电路连接。
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