Cross-protocol mobile phone charging adapter and charging method

Abstract

The invention discloses a cross-protocol charging adapter which is used for connecting a charging power supply and a charging load, the charging power supply comprises a first charging protocol, the charging load comprises a second charging protocol, and the cross-protocol charging adapter comprises a processing module which is used for processing the second charging protocol when the second charging protocol sent by the charging load is received. The processing module and the charging power supply perform protocol matching of a charging protocol, the charging management module is connected with the processing module, and when the processing module reads that a first charging protocol and a second charging protocol of the input end of the charging power supply are successfully matched, the charging power supply establishes handshake communication with the charging load; the processing module controls the charging management module to work, the conversion module is connected with the charging management module and is connected between the charging power supply and the charging load, and the conversion module comprises at least two voltage conversion units which are connected in parallel, so that the application environment of the adapter can be greatly expanded, and the loss of electric energy in a path is also reduced to a certain extent.

Description

Technical Field

[0001] The technical field of charging switching, in particular, relates to a cross-protocol mobile phone charging adapter and a charging method thereof. Background Art

[0002] Ever since the EU forced Apple to use the type-c interface, the type-c charging interface has become the universal charging interface for all different brands of mobile phones. Although the interface is the same, due to the different charging protocols used by Apple and Android phones, there will be incompatibility issues with charging adapters. Therefore, a charging adapter that is compatible with different charging protocols has become an urgent problem that needs to be solved. Summary of the invention

[0003] In view of this, the present invention provides a method for realizing charging adaptation between different charging protocols, which can improve the application scope of the charger adapter and solve the above-mentioned technical problems. The method is specifically implemented by the following technical solutions:

[0004] In a first aspect, the present invention provides a cross-protocol mobile phone charging adapter for connecting a charging power source and a charging load, wherein the charging power source includes a first charging protocol, and the charging load includes a second charging protocol. The cross-protocol charging adapter includes:

[0005] a processing module, configured to perform protocol matching of the charging protocol with the charging power source upon receiving the second charging protocol sent by the charging load;

[0006] A charging management module connected to the processing module. When the processing module reads the first charging protocol of the input end of the charging power source and the protocol of the second charging protocol matches successfully, the charging power source establishes a handshake communication with the charging load, and the processing module controls the operation of the charging management module.

[0007] a conversion module, connected to the charging management module and connected between the charging power source and the charging load, the conversion module comprising at least two parallel voltage conversion units;

[0008] Among them, when the power signal of the charging load that meets the charging requirements is less than the preset power signal of the charging power input, the charging management module controls the voltage conversion unit to form a step-down path to charge the charging load; when the power signal is greater than or equal to the preset power signal, the charging management module controls the voltage conversion unit to form a step-up path to charge the charging load.

[0009] In a second aspect, the present invention further provides a charging method, which is applied to a cross-protocol charging adapter, and is used to connect a charging power source and a charging load, wherein the charging power source includes a first charging protocol, and the charging load includes a second charging protocol. The charging method includes:

[0010] The charging power source and the charging load are coupled via a cross-protocol charging adapter, and when a second charging protocol sent by the charging load is received, the first charging protocol is matched with the second charging protocol;

[0011] If the first charging protocol matches the second charging protocol successfully, the charging power source establishes handshake communication with the charging load;

[0012] When the power signal of the charging load that meets the charging demand is less than the preset power signal of the charging power input, controlling to form a step-down path to charge the charging load;

[0013] When the power signal is greater than or equal to the preset power signal, a boost path is controlled to be formed to charge the charging load.

[0014] The present invention provides a cross-protocol mobile phone charging adapter with the following beneficial effects: the charging power supply and the charging load are matched by the first charging protocol and the second charging protocol, and the charging power supply and the charging load can establish handshake communication, which can solve the problem that the mobile phone cannot adapt to the charging power supplies produced by various manufacturers, that is, the charging protocol mismatch problem. After the handshake communication is successful, when it is necessary to judge that the power signal of the charging load that meets the charging demand is less than the preset power signal of the charging power input, the charging management module is used to control the voltage conversion unit to form a step-down path to charge the charging load. When the power signal is greater than or equal to the preset power signal, the charging management module controls the voltage conversion unit to form a temperature increase path to charge the charging load, which can solve the problem of charging voltage or current gear modulation. For different charging power signal inputs, that is, voltage or current, different voltage conversion units, that is, DC-DC paths, are combined inside the cross-protocol adapter to output a voltage or current signal that meets the load demand, which can improve the charging efficiency. Setting multiple DC-DC paths can expand the application range of the charging power supply. Multiple paths are connected in parallel to achieve a wider range of current output, that is, a wider range of power emission. The conversion module includes at least two voltage conversion units connected in parallel, which can greatly expand the application environment of the adapter and reduce the loss of electric energy in the path to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 A structural block diagram of a cross-protocol charging adapter provided by an embodiment of the present invention;

[0017] Figure 2 A circuit diagram of a cross-protocol charging adapter provided by an embodiment of the present invention;

[0018] The main component symbols are described as follows:

[0019] 10-inter-protocol charging adapter; 11-charging power supply; 12-charging load; 13-processing module; 14-charging management module; 15-conversion module; 16-voltage conversion unit; 17-voltage stabilizing module; 18-first diode; 19-power module; 20-capacitor; 21-second diode; 22-first switch; 23-second switch; 24-decoding module; 25-encoding module; 26-first communication line; 27-first filtering unit; 28-analog-to-digital conversion unit; 30-decoding unit; 31-encoding unit; 32-digital-to-analog conversion unit; 33-second filtering unit; 34 second communication line; 25 indicator light; 36-adjustment module. DETAILED DESCRIPTION

[0020] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. In contrast, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0022] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] See also Figure 1 , Figure 2 The present invention provides a cross-protocol mobile phone charging adapter 10, which is used to connect a charging power source 11 and a charging load 12, wherein the charging power source 11 includes a first charging protocol, and the charging load 12 includes a second charging protocol. The cross-protocol charging adapter 10 includes:

[0024] The processing module 13 is configured to perform protocol matching of the charging protocol with the charging power source 11 upon receiving the second charging protocol sent by the charging load 12;

[0025] The charging management module 14 is connected to the processing module 13. When the processing module 13 reads the first charging protocol of the input end of the charging power source 11 and the protocol match with the second charging protocol is successful, the charging power source 11 establishes a handshake communication with the charging load 12, and the processing module 13 controls the charging management module 14 to work;

[0026] A conversion module 15, connected to the charging management module 14 and connected between the charging power source 11 and the charging load 12, the conversion module 15 includes at least two parallel voltage conversion units 16;

[0027] Among them, when the power signal of the charging load 12 that meets the charging demand is less than the preset power signal input by the charging power supply 11, the charging management module 14 controls the voltage conversion unit 16 to form a step-down path to charge the charging load 12; when the power signal is greater than or equal to the preset power signal, the charging management module 14 controls the voltage conversion unit 16 to form a step-up path to charge the charging load 12.

[0028] In this embodiment, the charging power supply 11 can be connected to the AC mains, i.e., the power supplier, and the charging load 12 can be a charging mobile phone. The charging voltage and current selected by different manufacturers during the charging protocol are different. A protocol is required to coordinate between the charging power supply 11 and the mobile phone to ensure that the mobile phone will not be damaged by excessive current. The key to whether the charging power supply 11 can be mixed is whether the charging power supply 11 and the mobile phone support the same protocol. The first charging protocol is the specifications and parameters set by a certain manufacturer of the charging power supply 11 when the charging power supply 11 is produced, which can be compatible with a certain brand or multiple brands of mobile phones, that is, the charging power supply 11 can be compatible with at least one charging protocol. Similarly, the second charging protocol is the specifications and parameters set by the mobile phone manufacturer during production, but the charging protocol it supports is relatively single, and the relationship between the charging power supply 11 and the mobile phone is similar to that between the mobile phone and the charger. The process of protocol matching is the process of connecting the two devices for communication, including electrical signal transmission or other data transmission. The processing module 13 can be a central processing unit, i.e., a CPU. The charging power supply 11 can convert AC power into DC power, which is convenient for stable storage of electrical energy. The conversion module 15 is equivalent to a transformer. According to the maximum charging power required by the mobile phone, the input voltage or current has an upper limit. The input voltage during the charging process is in a changing curve. The voltage conversion unit 16 is a DC chopper, that is, composed of a DC-DC converter. When charging the charging load 12, it is necessary to adjust the voltage, such as boosting or bucking, to ensure the safety and stability of the charging process.

[0029] It should be noted that the power signal that meets the charging demand of the charging load 12 mainly includes charging power, voltage, and current. The preset power signal includes the maximum output power, output voltage, or output current of the charging power supply 11. The power signal that meets the charging demand can be compared with the preset power signal input by the charging power supply 11, and the voltage boost or buck can be flexibly adjusted to ensure the smooth progress of the charging process. The charging management module 14 is a PMIC (Power Management IC). The processing module 13 can read the protocols of the charging power input terminal and the charging load 12, which are recorded as IC-1 and protocol IC-2. If the handshake is matched, the charging management module 14 will be directly controlled to charge. The charging management module 14 is used to manage the entire power supply equipment of the mobile phone.

[0030] In addition, the cross-protocol charging adapter 10 also includes a voltage stabilizing module 17 and a first diode 18 connected between the charging power supply 11 and the charging load 12. The charging power supply 11 includes a power module 19, a capacitor 20 and a second diode 21. The input end of the power module 19 is connected to the input end of the capacitor 20, the anode of the second diode 21, and the anode of the first diode 18. The output end of the power module 19 is connected to the output end of the capacitor 20 and the cathode of the second diode 21. The charging load 12 includes a first switch 22 connected to the cathode of the first diode 18 and a second switch 23 connected to the output end of the power module 19.

[0031] It should be noted that the voltage stabilizing module 17 includes a voltage / current adaptive stabilizer, and the diode has two functions: 1. Avoid the situation where the positive and negative poles of the charging power interface are defined differently, and the reverse current passes through the charging adapter, damaging the charging adapter or even damaging the mobile phone; 2. Avoid the unstable factors of the charging power supply. When the charging power supply may have an electrical surge or failure, the charging power supply outputs a high voltage for a short time, causing damage to the adapter or even the mobile phone. The principle of the diode protection circuit: the diode is unidirectional and cannot pass the reverse current. When the voltage applied to both ends of the diode exceeds a certain level, the diode breaks down to cause a short circuit, further protecting the circuit. The main role of the capacitor is to filter the AC part between the voltage and current input by the charging power supply. The reason why the voltage output by the charging power supply contains AC is that the DC output is rectified from ordinary AC. There is inevitably some unrectified AC in the circuit, that is, the main role of the capacitor is to filter the unrectified AC in the circuit to avoid damage to the circuit by AC. Two modules, voltage and adaptive stabilizer, are installed in the circuit. The voltage and current of Apple mobile phone charging are different from those of other protocols. The main function of the two modules is to reasonably distribute the high voltage and high current of Apple charging power supply to prevent excessive voltage and current from causing irreversible damage to the charging adapter. In addition to the reasonable distribution of voltage and current by the voltage and current adaptive stabilizer, the two modules also make adjustments based on the information sent by the central processor. The output end of the charging adapter is connected in parallel to multiple connected charging heads. After the protocol information sent by multiple output ends enters the central processor, the processor will recognize the signals of multiple terminals and send information to the voltage and current adaptive modules, allowing the two modules to increase the intensity of voltage and current.

[0032] It should be understood that the cross-protocol charging adapter 10 includes two connectors, a voltage stabilizing module 17, i.e., a voltage adaptive voltage stabilizing device, and a central processor. The two connectors are respectively connected to the ordinary charging power supply 11 and the Apple charging interface, wherein the connector for connecting the ordinary charging power supply is loaded with the second charging protocol, and the connector for connecting the Apple is loaded with the first charging protocol. The central processor is placed between the two connectors, and the second charging protocol of the ordinary charging power supply is obtained through the communication line. After the central processor detects the second charging protocol signal, it simulates the trigger signal of the second charging protocol to trigger the ordinary charging power supply to supply power. At this time, the central processor simulates the first charging protocol to be loaded in the power supply current. The first switch 22 and the second switch 23 are closed at the same time so that the input power of the power module 19 can stably charge the battery, and multiple diodes can start the withstand voltage effect, which can avoid overcharging to a certain extent. The processing module 13 is also connected to the upgrade interface. When the above protocol is modified, the adapter can be upgraded using an external upgrade device to ensure the normal use of the cross-protocol charging adapter 10. The adaptive voltage stabilizing device is arranged between the two connectors to improve the stability, safety and continuity of the voltage conversion process. It should be noted that the protocols loaded at both ends of the cross-protocol adapter 10 in the present invention are not limited to the first charging protocol and the second charging protocol, and it depends on the actual situation.

[0033] Optionally, the cross-protocol charging adapter 10 further includes a decoding module 24 connected between the charging power source 11 and the processing module 13 and used to match the first charging protocol, and an encoding module 25 connected between the charging load 12 and the processing module 13 and used to match the second charging protocol;

[0034] The decoding module 24 includes a first communication line 26, a first filtering unit 27, an analog-to-digital conversion unit 28 and a decoding unit 30 connected in sequence, and the encoding module 25 includes an encoding unit 31, a digital-to-analog conversion unit 32, a second filtering unit 33 and a second communication line 34 connected in sequence.

[0035] In this embodiment, the first communication line 26 can be a CAN bus, preferably a CP or CC communication line, and the CC signal line is an AC charging confirmation signal line, which is used to confirm the current power of the power supply device and the maximum current carrying capacity of the charging cable. The CP signal line is a charging control signal line, which is used to indicate to the mobile phone the maximum power of the power supply device and is also a signal line for controlling the start and stop of charging. The second communication line 34 is an S+ / S- communication line. The first filtering unit 27 can filter the signal sent by the charging power supply 11 to obtain a selected first signal. The first signal is converted into a digital signal by the analog-to-digital conversion unit 28 and transmitted to the central processing unit. The second filtering unit 33 is to filter the signal (including voltage, current or power) sent by the load to obtain a second signal, and convert the second signal into an analog signal by digital-to-analog conversion, and then match the digital signal with the analog signal. If the match is successful, the charging power supply-central processing unit-charging load forms a path, so that the charging power supply 11 and the charging load 12 handshake communication, which improves the convenience of use of the cross-protocol charging adapter 10.

[0036] Optionally, the cross-protocol charging adapter 10 further includes an indicator light connected to the processing module 13 and used to display the charging status of the charging load 12 .

[0037] In this embodiment, the indicator light 25 can display three colors: red, green and yellow. Red can indicate that the charging load 12 with a power level less than 10% starts to charge, green can indicate that the power level is fully charged, and yellow can indicate that the power level is higher than 10% and less than 100%. It can be understood that when the red light is displayed, the charging power output by the charging power source is greater than the charging power when the yellow light is displayed, and when the green light is displayed, the charging power output by the charging power source is the smallest, so that the charging state of the charging load 12 charged by the charging power source can be intuitively known.

[0038] Optionally, the cross-protocol charging adapter 10 further includes:

[0039] The adjustment module 36 is connected to the processing module 13, and is used to store the first charging protocol and adjust the frequency of protocol matching when the first charging protocol is successfully matched with the second charging protocol.

[0040] In this embodiment, the adjustment module 36 stores each protocol match, or selects protocols from multiple protocols supported by the charging power source 11 to match the charging load 12 one by one, so as to improve the working efficiency of the charging load 12 connecting to the charging power source 11 for charging.

[0041] In another feasible embodiment, the circuit between the CCS charging head and the central processor is called the pre-processing circuit, and the processing circuit between the central processor and the charging power supply is the post-processing circuit. The pre-processing circuit, the post-processing circuit, the central processor and the memory are all equipped with metal shielding covers, and the metal shielding covers are grounded. The main functions of the metal shielding covers are: 1. The signals processed in the pre-processing circuit and the post-processing circuit are high-frequency signals. The electromagnetic interference generated by the high-frequency signals will affect each other. Severe electromagnetic interference may even cause the circuit to fail to work properly. The role of the metal shielding cover is to greatly reduce the electromagnetic interference in the circuit. 2. The metal shielding cover can avoid the influence of static electricity. 3. The metal shielding cover plays a role in protecting the circuit. When the charging adapter is hit or other unexpected situations occur, it can protect the circuit from external damage. 4. The installation of the metal shielding cover simplifies the circuit design. If the metal shielding cover is not installed, it is necessary to add the design of the adjacent circuit in the circuit to avoid the electromagnetic interference generated in the circuit.

[0042] The present invention also provides a charging method, which is applied to a cross-protocol charging adapter and is used to connect a charging power source and a charging load, wherein the charging power source includes a first charging protocol, and the charging load includes a second charging protocol. The charging method includes:

[0043] S10: coupling the charging power source and the charging load through a cross-protocol charging adapter, and when receiving a second charging protocol sent by the charging load, matching the first charging protocol with the second charging protocol;

[0044] S20: If the first charging protocol matches the second charging protocol successfully, the charging power source establishes handshake communication with the charging load;

[0045] S30: When the power signal of the charging load that meets the charging demand is less than the preset power signal of the charging power input, controlling to form a step-down path to charge the charging load;

[0046] S40: When the power signal is greater than or equal to the preset power signal, controlling to form a boost path to charge the charging load.

[0047] In this embodiment, the cross-protocol charging adapter is connected between the charging power source and the charging load. There is no connection confirmation component at one end of the charging head with the CCS protocol connected to the charging power source. The charging head needs to be fully connected to the socket of the mobile phone to avoid poor contact. The other end of the cross-protocol charging adapter connected to the mobile phone is recorded as the charging end. When the charging head and the charging power source are not connected, the circuit is in an open circuit state, and the charging power source will not provide voltage and current to the charging head. When the contact is poorly contacted, the central processing unit will identify the poor contact information and let the circuit enter the disconnected state to avoid problems caused by poor contact. When the connection between the contacts is stable, the switch between the charging power source and the charging head is closed, and the circuit enters the charging equipment state. When both ends of the adapter are connected, the CP / CC signal line of the charging head will send the protocol information it carries to the processing circuit in the form of a high-frequency signal.

[0048] It should be noted that the protocol signal enters the filter circuit through the communication line. The CCS protocol signal first enters the filter circuit through the communication line to filter out impurities in the signal to ensure that the signal obtained in the A / D circuit is a complete charging protocol signal. The processed signal will enter the A / D circuit, that is, the analog-to-digital conversion circuit. The charging protocol signal is an analog signal and needs to be converted into a digital signal. The function of the A / D conversion circuit is to convert the filtered signal through sampling, holding, quantization and encoding, and convert it into a corresponding digital signal.

[0049] Optionally, the matching the first charging protocol with the second charging protocol includes:

[0050] S101: performing a decoding operation on the first charging protocol to obtain decoding information, and performing an encoding operation on the second charging protocol to obtain encoding information, wherein the decoding operation includes filtering, modulation, carrier and decoding, and the encoding operation includes logical operation, encoding and importing;

[0051] S102: Establishing handshake communication according to successful protocol matching between the decoding information and the encoding information.

[0052] In this embodiment, after analog-to-digital conversion, the digital signal cannot be processed by the central processing unit and needs to be further decoded. The analog-to-digital converted signal will enter the decoding circuit. The decoded result can be used as identity identification information. Different mobile phone charging protocols are different, and the decoding results are also different. The decoding result can be used as the identity identification information of the charging head. The central processing unit identifies the protocol of the charging head based on the decoding result. The decoded result enters the central processing unit through the communication line. The central processing unit identifies different charging head protocols based on the decoding results. The storage unit of the central processing unit calls out the corresponding protocol transcoding code, converts the decoding result into the signal of the Apple protocol, and transmits the voltage and current signals corresponding to this protocol to the above-mentioned voltage adaptive stabilizer and current adaptive stabilizer. The voltage / current stabilizer will set the voltage / current conversion value. The transcoding code stored in the storage unit is upgradeable. When the above-mentioned protocol is changed or upgraded, the code therein can be manually upgraded by external upgrade. The memory in this example can be replaced with other types of memory, such as programmable gate circuit (PLC), electrically programmed ultraviolet erasable memory (EPROM), electrically programmed electrically erasable memory (EEPROM), EEPROM improved electrically programmed electrically erasable memory (FlashMemory), etc. The signal enters the encoding circuit to encode the signal, and the digital signal is transcoded by the central processing unit (CPU), and the information contained in it cannot be directly used as a protocol signal. The digital signal needs to pass through the encoder to encode it into a digital signal containing the Apple charging protocol. The signal enters the D / A conversion circuit for digital-to-analog conversion. The encoded digital signal will enter the D / A conversion circuit, which is a digital-to-analog conversion circuit. The digital signal containing the Apple charging protocol will be converted into an analog signal after passing through the D / A converter. The analog signal is the complete charging protocol of the Apple charging adapter.

[0053] The present invention provides a cross-protocol mobile phone charging adapter. By matching the charging power supply and the charging load through the first charging protocol and the second charging protocol, the charging power supply and the charging load can establish handshake communication, which can solve the problem that the mobile phone cannot adapt to the charging power supplies produced by multiple manufacturers, that is, the charging protocol mismatch problem. After the handshake communication is successful, when it is necessary to judge that the power signal of the charging load that meets the charging demand is less than the preset power signal of the charging power input, the charging management module is used to control the voltage conversion unit to form a step-down path to charge the charging load. When the power signal is greater than or equal to the preset power signal, the charging management module controls the voltage conversion unit to form a temperature increase path to charge the charging load, which can solve the problem of charging voltage or current gear modulation. For different charging power signal inputs, that is, voltage or current, different voltage conversion units, that is, DC-DC paths, are combined inside the cross-protocol adapter to output a voltage or current signal that meets the load demand, which can improve the charging efficiency. The conversion module includes at least two parallel voltage conversion units, which can greatly expand the application environment of the adapter and reduce the loss of electric energy in the path to a certain extent.

[0054] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limiting, and thus other examples of the exemplary embodiments may have different values.

[0055] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0056] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A cross-protocol mobile phone charging adapter, characterized in that: Used to connect a charging power source and a charging load, the charging power source includes a first charging protocol, the charging load includes a second charging protocol, and the cross-protocol charging adapter includes: a processing module, configured to perform protocol matching of the charging protocol with the charging power source upon receiving the second charging protocol sent by the charging load; A charging management module connected to the processing module. When the processing module reads the first charging protocol of the input end of the charging power source and the protocol of the second charging protocol matches successfully, the charging power source establishes a handshake communication with the charging load, and the processing module controls the operation of the charging management module. a conversion module, connected to the charging management module and connected between the charging power source and the charging load, the conversion module comprising at least two parallel voltage conversion units; The cross-protocol mobile phone charging adapter also includes a voltage stabilizing module and a first diode connected between the charging power supply and the charging load. The charging power supply includes a power module, a capacitor and a second diode. The input end of the power module is connected to the input end of the capacitor, the anode of the second diode, and the anode of the first diode. The output end of the power module is connected to the output end of the capacitor and the cathode of the second diode. The charging load includes a first switch connected to the cathode of the first diode and a second switch connected to the output end of the power module. Among them, when the power signal of the charging load that meets the charging requirements is less than the preset power signal of the charging power input, the charging management module controls the voltage conversion unit to form a step-down path to charge the charging load; when the power signal is greater than or equal to the preset power signal, the charging management module controls the voltage conversion unit to form a step-up path to charge the charging load.

2. The cross-protocol mobile phone charging adapter according to claim 1, characterized in that: The cross-protocol charging adapter further includes a decoding module connected between the charging power source and the processing module and used to match the first charging protocol, and an encoding module connected between the charging load and the processing module and used to match the second charging protocol; The decoding module includes a first communication line, a first filtering unit, an analog-to-digital conversion unit and a decoding unit connected in sequence, and the encoding module includes an encoding unit, a digital-to-analog conversion unit, a second filtering unit and a second communication line connected in sequence.

3. The cross-protocol mobile phone charging adapter according to claim 2, characterized in that: The cross-protocol charging adapter also includes an indicator light connected to the processing module and used to display the charging status of the charging load.

4. The cross-protocol mobile phone charging adapter according to claim 1, characterized in that: The voltage conversion unit is a DC chopper.

5. The cross-protocol mobile phone charging adapter according to claim 1, characterized in that: The cross-protocol charging adapter also includes: The adjustment module is connected to the processing module and is used to store the first charging protocol and adjust the frequency of protocol matching when the first charging protocol is successfully matched with the second charging protocol.

6. A charging method, characterized in that: Applied to a cross-protocol mobile phone charging adapter, used to connect a charging power source and a charging load, the charging power source includes a first charging protocol, the charging load includes a second charging protocol, and the charging method includes: The charging power source and the charging load are coupled via a cross-protocol mobile phone charging adapter, and when a second charging protocol sent by the charging load is received, the first charging protocol is matched with the second charging protocol; If the first charging protocol matches the second charging protocol successfully, the charging power source establishes handshake communication with the charging load; When the power signal of the charging load that meets the charging demand is less than the preset power signal of the charging power input, controlling to form a step-down path to charge the charging load; When the power signal is greater than or equal to the preset power signal, a boost path is controlled to be formed to charge the charging load.

7. The charging method according to claim 6, characterized in that: The matching the first charging protocol with the second charging protocol includes: The first charging protocol is decoded to obtain decoded information, and the second charging protocol is encoded to obtain encoded information, wherein the decoding operation includes filtering, modulation, carrier and decoding, and the encoding operation includes logical operation, encoding and importing; If the decoding information and the encoding information are successfully matched, a handshake communication is established.

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