WO2020133189A1

WO2020133189A1 - Quick charge protocol translation circuit, device, and method

Info

Publication number: WO2020133189A1
Application number: PCT/CN2018/124788
Authority: WO
Inventors: 郭继龙
Original assignee: 深圳市柔宇科技有限公司
Priority date: 2018-12-28
Filing date: 2018-12-28
Publication date: 2020-07-02
Also published as: CN112640246A

Abstract

The present application discloses a quick charge protocol translation circuit (10), comprising an identification unit (11) and a processing unit (12). The identification unit (11) is electrically connected to a charging input interface (20) and the processing unit (12). The processing unit (12) is provided with a first communication pin (121), a second communication pin (122), and a target communication pin (123). The processing unit (12) is further used to control the identification unit (11) to identify whether a charge protocol of an adapter (300) is one of a first quick charge protocol or a second quick charge protocol. When the identification unit (11) identifies that the charge protocol of the adapter (300) is one of the first quick charge protocol or the second quick charge protocol, the quick charge protocol currently supported by the adapter (300) is translated into a target quick charge protocol, and the adapter (300) and a mobile terminal (500) are controlled, according to the target quick charge protocol, to enter a quick charge mode. The present application solves the problem of compatibility between the quick charge protocol of the mobile terminal (500) and that of the adapter (300).

Description

Fast charging protocol conversion circuit, device and method

Technical field

This application relates to the field of charging technology, in particular to a fast charging protocol conversion circuit, device and method.

Background technique

In order to meet people's demand for fast charging of mobile terminals, fast charging technology came into being. At present, the most commonly used fast charging technology on the market is the high voltage fast charging method. For example, commonly used high-voltage fast charging technologies include Qualcomm QC (Quick Charge) protocol, MediaTek PE (Pump Express) protocol, Huawei Super Charge (super fast charge) protocol and USB PD (Power Delivery) protocol, etc., but the existing There is incompatibility between the fast charging protocols. The fast charging protocol on the mobile terminal must match the fast charging protocol on the adapter to achieve fast charging, that is, the mobile terminal must match the adapter, otherwise fast charging cannot be achieved. Therefore, the problem of incompatibility between the existing fast charging protocol on the mobile terminal side and the fast charging protocol on the adapter side has become a critical problem to be solved in people's daily life.

Summary of the invention

The embodiment of the present application discloses a fast charging protocol conversion circuit, device and method to solve the above problems.

An embodiment of the present application discloses a fast charging protocol conversion circuit, which is applied to a fast charging protocol conversion device. The fast charging protocol conversion device includes a charging input interface and a charging output interface. The fast charging protocol conversion circuit is connected to the charging input Between the interface and the charging output interface, and respectively connected to the adapter and the mobile terminal through the charging input interface and the charging output interface; characterized in that the fast charging protocol conversion circuit includes:

The processing unit is provided with a first communication pin, a second communication pin and a target communication pin; wherein, the first communication pin is used for data interaction between the charging input interface and the adapter through the first fast charging protocol The second communication pin is used for data interaction between the charging input interface and the adapter through the second fast charging protocol; the target communication pin defines the charging output interface and the mobile terminal through the target fast charging Data exchange by agreement; and

An identification unit electrically connected to the charging input interface and the processing unit;

The processing unit is further used to control the identification unit to identify whether the charging protocol of the adapter is one of the first fast charging protocol or the second fast charging protocol;

When it is recognized that the charging protocol of the adapter is one of the first fast charging protocol or the second fast charging protocol, the fast charging protocol currently supported by the adapter is converted into the target fast charging protocol, and according to The target fast charging protocol controls the adapter and the mobile terminal to enter a fast charging mode.

An embodiment of the present application discloses a fast charging protocol conversion device, including:

Charging input interface, used to connect with the adapter;

Charging output interface for connection to mobile terminals; and

The fast charging protocol conversion circuit as described above; the fast charging protocol conversion circuit is connected between the charging input interface and the charging output interface, and respectively passes through the charging input interface and the charging output interface and the adapter and The mobile terminal establishes a charging connection.

An embodiment of the present application discloses a fast charging protocol conversion method, which is applied to a fast charging protocol conversion device. The fast charging protocol conversion device includes an identification unit and is used to connect to an adapter and a mobile terminal respectively; the definition of the protocol conversion device There are a first fast charging agreement, a second fast charging agreement and a target fast charging agreement; the fast charging protocol conversion method includes:

Controlling the recognition unit to recognize whether the charging protocol of the adapter is one of the first fast charging protocol or the second fast charging protocol;

The fast charging protocol conversion circuit, device and method disclosed in the present application can identify the quick charging protocol of the adapter, and when the quick charging protocol of the adapter is identified with the first communication pin and the second communication lead When a quick charging protocol in the third protocol unit is matched, the quick charging protocol of the adapter is replaced with a target quick charging protocol, and the adapter and the mobile terminal are controlled to enter the fast mode according to the target quick charging protocol The charging mode further solves the problem of fast charging protocol compatibility between the mobile terminal and the adapter.

BRIEF DESCRIPTION

In order to more clearly explain the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. Those of ordinary skill in the art can obtain other drawings based on these drawings without creative work.

FIG. 1 is a block schematic diagram of a fast charging protocol conversion device in an embodiment of the present application.

FIG. 2 is a functional block diagram of a fast charging protocol conversion circuit in an embodiment of this application.

FIG. 3 is a functional block diagram of a fast charging protocol conversion circuit in another embodiment of this application.

4 is a functional block diagram of a fast charging protocol conversion circuit in still another embodiment of this application.

FIG. 5 is a flowchart of steps of a fast charging protocol conversion method in an embodiment of the present application.

FIG. 6 is a flowchart of steps of a fast charging protocol conversion method in another embodiment of the present application.

FIG. 7 is a flowchart of steps of a fast charging protocol conversion method in still another embodiment of the present application.

detailed description

The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without making creative efforts fall within the protection scope of the present application.

In the description of the embodiments of the present invention, it should be understood that the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the indicated technical features quantity. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of “plurality” is two or more, unless otherwise specifically limited.

When an element is considered "connected" to another element, it may be directly connected to the other element or there may be a centering element at the same time. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of the present invention. The terminology used in the description of the present invention herein is for the purpose of describing specific embodiments, and is not intended to limit the present invention.

Please refer to FIG. 1, which is a schematic block diagram of a fast charging protocol conversion device 100 according to an embodiment of the present application. The fast charging protocol conversion device 100 is used to connect with the adapter 300 and the mobile terminal 500 respectively, and can communicate with the adapter 300 and the mobile terminal 500 respectively to identify the charging of the adapter 300 and the mobile terminal 500 protocol. When the fast charging protocol conversion device 100 recognizes that both the adapter 300 and the mobile terminal 500 are fast charging protocols, the fast charging protocol conversion device 100 converts the fast charging protocol of the adapter 300 into the mobile terminal 500 The required target fast charging protocol to control the adapter 300 and the mobile terminal 500 to enter the fast charging mode. When the fast charging protocol conversion device 100 recognizes that one of the adapter 300 and the mobile terminal 500 does not satisfy the fast charging protocol, the fast charging protocol conversion device 100 controls the adapter 300 and the mobile terminal 500 Enter the normal charging mode.

In the case where the mobile terminal 500 needs to obtain the same amount of power, the charging time in the fast charging mode is shorter than the charging time in the normal mode.

In this embodiment, the adapter 300 is a power adapter. The mobile terminal 500 includes but is not limited to a mobile phone, a tablet computer, a notebook computer, and the like.

It should be noted that the fast charging mode may be a high-voltage charging method or a high-current charging method, which is not limited herein.

The fast charging protocol conversion device 100 includes a fast charging protocol conversion circuit 10, a charging input interface 20 and a charging output interface 30. The protocol conversion circuit 10 is electrically connected between the charging input interface 20 and the charging output interface, and is established with the adapter 300 and the mobile terminal 500 through the charging input interface 20 and the charging output interface 30, respectively Charging connection. In addition, the protocol conversion circuit 10 can also communicate with the adapter 300 through the charging input interface 20 and can communicate with the mobile terminal 500 through the charging output interface 30.

Wherein, the charging input interface 20 and the charging output interface 30 include data pins, which can communicate through the data pins.

Wherein, the charging input interface 20 and the charging output interface 30 are both connectors. Illustratively, the charging input interface 20 may be a USB Type-C interface or a Micro USB interface. The charging output interface 30 may also be a USB Type-C interface or a Micro USB interface.

Preferably, the charging input interface 20 is a USB Type-C female interface or a Micro USB female interface, which is plugged into the charging output interface of the adapter 300. The charging output interface 20 is a USB Type-C public interface or a Micro USB public interface, and is used for plugging into the charging input interface of the mobile terminal 500.

Please refer to FIG. 2 again. FIG. 2 is a functional block diagram of the fast charging protocol conversion circuit 10 in an embodiment of the present application. As shown in FIG. 2, the fast charging protocol conversion circuit 10 includes an identification unit 11 and a processing unit 12. Wherein, the identification unit 11 is electrically connected to the charging input interface 20 and the processing unit 12. The processing unit 12 is provided with a first communication pin 121, a second communication pin 122 and a target communication pin 123. Wherein, the first communication pin 121 is used for data interaction between the charging input interface 20 and the adapter 300 through the first fast charging protocol. The second communication pin 122 is used for data interaction between the charging input interface 20 and the adapter 300 through a second fast charging protocol. The target communication pin 123 is used for data interaction between the charging output interface 30 and the mobile terminal 500 through a target fast charging protocol. The processing unit 12 is also used to control the identification unit 11 to identify whether the charging protocol of the adapter 300 is one of the first fast charging protocol or the second fast charging protocol. When recognizing that the charging protocol of the adapter 300 is one of the first fast charging protocol or the second fast charging protocol, the processing unit 12 converts the fast charging protocol currently supported by the adapter 300 into a The target fast charging protocol, and control the adapter 300 and the mobile terminal 500 to enter the fast charging mode according to the target fast charging protocol.

The protocol conversion circuit 10 and the protocol conversion device 100 disclosed in the present application can recognize the fast charging protocol of the adapter 300, and when the fast charging protocol of the adapter 300 and the first fast charging protocol or the second fast charging protocol are recognized When one of the charging protocols is adapted, the fast charging protocol currently supported by the adapter 300 is replaced with a target fast charging protocol, and the adapter 300 and the mobile terminal 500 are controlled to enter the fast charging mode according to the target fast charging protocol In order to solve the problem of fast charging protocol compatibility between the mobile terminal 500 and the adapter 300.

The processing unit 12 may be a central processing unit (Central Processing Unit, CPU), or other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), and on-site Field-Programmable GateArray (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc. The processing unit 12 is the control center of the fast charging protocol conversion device 100, and the entire interface is connected using various interfaces and lines Each part of the fast charging protocol conversion device 100.

Please refer to FIG. 3 again, which is a functional block diagram of a fast charging protocol conversion circuit 10 in another embodiment of the present application. As shown in FIG. 3, the fast charging protocol conversion circuit further includes a conversion unit 13. The conversion unit 13 is electrically connected between the charging input interface 20 and the charging output interface 30, and is electrically connected to the processing unit 12. The controlling the adapter 300 and the mobile terminal 500 to enter the fast charging mode according to the target fast charging protocol includes: controlling the conversion unit 13 to output a target charging voltage and a target charging current according to the target fast charging protocol, and Make the adapter 300 and the mobile terminal 500 enter the fast charging mode.

The conversion unit 13 is used to convert the charging voltage output by the adapter 300 into the charging voltage required by the mobile terminal 500. In this embodiment, the conversion unit 16 is a DC-DC converter.

In some embodiments, the identification unit 11 is a switch. The switch is electrically connected to the charging input interface 20, the first communication pin 121 and the second communication pin 122. The controlling the identification unit 11 identifies whether the charging protocol adopted by the adapter 300 is one of the first fast charging protocol or the second fast charging protocol, which specifically includes: when the switch establishes the charging input When the electrical connection between the interface 20 and the first communication pin 121 is made, it is determined whether the charging protocol of the adapter 300 that communicates with the first communication pin 121 through the charging input interface 20 is the The first fast charging protocol; or, when the switch establishes an electrical connection between the charging input interface 20 and the second communication pin 122, it is determined that the second communication is communicated with the second input pin 122 through the charging input interface Whether the charging protocol of the adapter 300 through which the pin 122 communicates is the second fast charging protocol.

It can be understood that the first communication pin 121 and the second communication pin 122 may perform handshake communication with the adapter 300 through the D+ and D- data pins of the charging input interface 20, if the communication is successful, It means that the charging protocol of the adapter 300 is adapted to the first fast charging protocol or the second fast charging protocol.

In other embodiments, the controlling the identification unit 11 identifies whether the charging protocol adopted by the adapter 300 is one of the first fast charging protocol or the second fast charging protocol, specifically including: The switch establishes an electrical connection between the charging input interface 20 and the first communication pin 121 to determine whether the charging protocol of the adapter 300 is compatible with the first fast charging protocol; when determining that the adapter 300 When the charging protocol does not match the first fast charging protocol, control the switch to establish an electrical connection between the charging input interface 20 and the second communication pin 122 to determine the charging protocol of the adapter 300 Whether it is compatible with the second fast charging protocol.

In some embodiments, in order to enable the fast charging protocol conversion device 100 to be compatible with more different fast charging protocols, the processing unit 12 is further provided with a third communication pin 123, the third communication pin 123 is provided for all The charging input interface 20 and the adapter 300 perform data interaction through a third fast charging protocol; the switch is also electrically connected to the third communication pin 123. When it is determined that the charging protocol of the adapter 300 is not compatible with the second fast charging protocol, the processing unit 12 controls the switch to establish a connection between the charging input interface 20 and the third communication pin 123 It is electrically connected to determine whether the charging protocol of the adapter 300 is adapted to the third fast charging protocol.

It should be noted that the number of types of fast charging protocols of the adapter 300 compatible with the fast charging protocol conversion device 100 can be set according to specific design requirements. For example, when four different fast charging protocols need to be identified, the processing unit 12 may also set a fourth communication pin and provide data interaction between the charging input interface 20 and the adapter 300 through the fourth fast charging protocol , Not limited here.

For example, the switch may be one of two switches or one of three switches. Of course, when the processing unit 12 is provided with N communication interfaces, the switch should be one of N switches. Preferably, the switch is an analog switch. Among them, the analog switch has the characteristics of low power consumption, fast speed, no mechanical contacts, small size and long service life. In other embodiments, the identification unit 11 may also be a multiplexer, which is not limited here, as long as the electrical connection between the charging input interface 20 and each communication interface can be established or disconnected separately That's it.

In some embodiments, when the charging protocol of the adapter 300 is adapted to the first fast charging protocol or the second fast charging protocol, the processing unit 12 controls the adapter 300 to increase the output voltage to meet The charging voltage of its fast charging protocol. When the quick charging protocol of the adapter 300 does not match the first quick charging protocol, the second quick charging protocol, and the third quick charging protocol, the processing unit 12 controls the adapter 300 and the The mobile terminal 500 enters the normal charging mode.

In some embodiments, the first fast charging protocol, the second fast charging protocol, and the third fast charging protocol are high voltage fast charging protocols, for example, a fast charging with a charging voltage of 9V and a charging current of 2A protocol. Wherein, the first fast charging agreement, the second fast charging agreement and the third fast charging agreement may be Qualcomm QC (Quick Charge) agreement, MediaTek PE (Pump Express) agreement, Huawei Super Charge (super fast charge) Charge) protocol and USB PD (Power Delivery) protocol. The target fast charging protocol is a low voltage high current fast charging protocol, for example, a fast charging protocol with a charging voltage of 4.4V and a charging current of 5A. In this embodiment, the target fast charging protocol is a flexible charging protocol. In other embodiments, the target fast charging protocol may also be other high current fast charging protocols, which is not limited herein.

In this embodiment, since the high-voltage fast charging protocol of the adapter 300 is converted into a low-voltage high-current quick charging protocol to quickly charge the mobile terminal 500, the heat generated by the mobile terminal 500 due to fast charging can be reduced, The heat is transferred to the fast charging protocol conversion device 100. In addition, since protocols such as QC, PE, and PD are high-voltage fast charging protocols, which have the advantages of strong cable compatibility and low cost, the fast charging protocol conversion device 100 has the dualities of high-voltage fast charging and low-voltage direct charging The advantage is that it can reduce the cost of the USB cable and the heat of the mobile terminal 500.

Please refer to FIG. 4 again, which is a functional block diagram of a fast charging protocol conversion circuit 10 in another embodiment of the present application. As shown in FIG. 4, the fast charging protocol conversion circuit 10 further includes a sampling unit 14 and an adjustment unit 15. The sampling unit 14 is electrically connected between the charging output interface 30 and the processing unit 12, and is configured to sample the charging current of the mobile terminal 500 through the charging output interface 30 to obtain a sampling current. The adjustment unit 15 is electrically connected between the conversion unit 13 and the processing unit 12. The processing unit 12 is further configured to compare the sampling current with a reference current, and control the output of the adjustment unit 15 according to the comparison result, and then control the conversion unit 13 to adjust the output target charging current.

The reference current is the currently required charging current sent by the mobile terminal 500 to the processing unit 12 during the charging process. During the charging process, the charging current will change as the charging progresses. For example, when the battery of the mobile terminal 500 is nearly full, the required charging current will decrease. At this time, the mobile terminal 500 sends the required charging current to all述processing unit 12 For example, when the sampling current is greater than the reference current, the processing unit 12 controls the output of the adjustment unit 15 and thereby controls the charging current output by the conversion unit 13 to decrease so that the target charging current is equal to the reference current.

For example, the sampling unit 14 may be electrically connected to the ground pin of the charging output interface 30 through a sampling resistor, and connected to a proportional operational amplifier, that is, after sampling through the sampling resistor, the current signal is converted into a voltage signal and then proportional After being amplified, it is output to the ADC (Analog-to-Digital Converter) pin of the processing unit 12. For example, the sampled current signal is input to the ADC pin of the processing unit 12 after being converted and amplified by multiples of the operational amplifier. The processing unit 12 can obtain the current value of the current charge according to the sampled signal, the sampled current value and the target reference current value After the comparison, the output current is adjusted. For example, when the charging current is too large, the conversion unit 13 can be controlled to reduce the output, so that the safety of charging the mobile terminal 500 can be improved.

In some embodiments, the adjustment unit 15 may be a digital potentiometer that has the advantages of flexible use, high adjustment accuracy, no contact, low noise, less fouling, anti-vibration, anti-interference, small size, and long life. The output of the digital potentiometer is connected to the reference (REF) pin of the DC-DC converter, so that the output of the DC-DC converter can be adjusted. For example, when the charging current is too large, the processing unit 12 adjusts the output by controlling the digital potentiometer, so that the reference recommendation of the DC-DC converter obtains a corresponding change, the output of the DC-DC converter decreases, and the charging current also decreases.

In some embodiments, the processing unit 12 also communicates with the mobile terminal 500 to identify the charging protocol of the mobile terminal 500, and when the charging protocol of the mobile terminal 500 and the target fast charging protocol are identified When not adapted, the adapter 300 and the mobile terminal 500 are controlled to enter a normal charging mode.

Please refer to FIG. 5 again. FIG. 5 is a flowchart of steps of a fast charging protocol conversion method according to an embodiment of the present application. The fast charging protocol conversion method is applied to a fast charging protocol conversion device 100. The fast charging protocol conversion device includes an identification unit 11 and is used to connect to the adapter 300 and the mobile terminal 500 respectively; the protocol conversion device 100 defines The first fast charge agreement, the second fast charge agreement and the target fast charge agreement. As shown in FIG. 5, the fast charging protocol conversion method includes the following steps:

Step S51: Control the identification unit 11 to identify whether the charging protocol of the adapter 300 is one of the first fast charging protocol or the second fast charging protocol.

Step S52, when it is recognized that the charging protocol of the adapter 300 is one of the first fast charging protocol or the second fast charging protocol, the fast charging protocol currently supported by the adapter 300 is converted to the target fast charging Charging protocol, and control the adapter 300 and the mobile terminal 500 to enter a fast charging mode according to the target fast charging protocol.

The protocol conversion method disclosed in this application can identify the fast charging protocol of the adapter 300, and when it is recognized that the charging protocol of the adapter 300 is adapted to one of the first fast charging protocol or the second fast charging protocol Time, the fast charging protocol of the adapter 300 is replaced with the target fast charging protocol, and the adapter 300 and the mobile terminal 500 are controlled to enter the fast charging mode according to the target fast charging protocol, thereby solving the problem of the mobile terminal 500 and the adapter 300 The problem of compatibility between fast charging protocols.

Wherein, the first fast charging protocol and the second fast charging protocol are high voltage fast charging protocols; the target fast charging protocol is a low voltage high current fast charging protocol.

In some embodiments, the controlling the adapter 300 and the mobile terminal 500 to enter the fast charging mode according to the target fast charging protocol includes: controlling the protocol conversion device 100 to output the target charging according to the target fast charging protocol The voltage and the target charging current cause the adapter 300 and the mobile terminal 500 to enter a fast charging mode.

In some embodiments, the controlling the identification unit 11 identifies whether the charging protocol of the adapter 300 is one of the first fast charging protocol or the second fast charging protocol, which specifically includes: determining the adapter 300 Whether the charging protocol of the adapter is compatible with the first fast charging protocol; when it is determined that the charging protocol of the adapter 300 is not compatible with the first fast charging protocol, the charging protocol of the adapter 300 and the second Whether the fast charging protocol is suitable.

Further, the fast charging protocol conversion device 100 further defines a third fast charging protocol; the method further includes: when it is determined that the charging protocol of the adapter 300 is not compatible with the second fast charging protocol, determining the Whether the charging protocol of the adapter 300 is adapted to the third fast charging protocol.

Please refer to FIG. 6 again. FIG. 6 is a flowchart of steps of a fast charging protocol conversion method in another embodiment of the present application. Unlike the method shown in FIG. 5, the fast charging protocol conversion method further includes the following steps:

Step S61, when it is recognized that the charging protocol of the adapter 300 is not compatible with one of the first fast charging protocol and the second fast charging protocol, the adapter 300 and the mobile terminal 500 are controlled to enter a normal charging mode .

In this way, the multifunctional practicability of the fast charging protocol conversion device 100 is realized, which can support both the fast charging mode and the ordinary charging mode.

Please refer to FIG. 7 again. FIG. 7 is a flowchart of steps of a fast charging protocol conversion method in another embodiment of the present application. Different from the method shown in FIG. 5, the fast charging protocol conversion method further includes before step S51:

Step S71: Identify the charging protocol of the mobile terminal 500.

In step S72, it is determined whether the charging protocol of the mobile terminal 500 is compatible with the target fast charging protocol unit; if so, step S51 is performed; if not, step S73 is performed.

In step S73, the adapter 300 and the mobile terminal 500 are controlled to enter a normal charging mode.

In this embodiment, it is first determined whether the mobile terminal 500 has a target fast charging protocol that matches the protocol conversion device 100. If the mobile terminal 500 does not have a target fast charging protocol, the method described in FIG. 4 is not performed. Directly controlling the adapter 300 and the mobile terminal 500 to enter a normal charging mode, thereby saving resource configuration and improving charging efficiency.

It should be noted that, for the sake of simple description, the foregoing method embodiments are all expressed as a series of action combinations, but those skilled in the art should be aware that this application is not limited by the sequence of actions described because According to this application, certain steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by this application.

In the above embodiments, the description of each embodiment has its own emphasis. For a part of a certain embodiment that is not described in detail, you can refer to the related descriptions of other embodiments.

The steps in the method of the embodiment of the present application may be adjusted, merged, and deleted sequentially according to actual needs.

The embodiments of the present application have been described in detail above, and specific examples have been used in this article to explain the principles and embodiments of the present application. Those of ordinary skill in the art, according to the ideas of the present application, may have changes in specific embodiments and application scopes. In summary, the content of this specification should not be construed as limiting the present application.

Claims

A fast charging protocol conversion circuit is applied to a fast charging protocol conversion device. The fast charging protocol conversion device includes a charging input interface and a charging output interface. The fast charging protocol conversion circuit is connected to the charging input interface and the charging Between the output interfaces, and connected to the adapter and the mobile terminal through the charging input interface and the charging output interface, respectively; characterized in that the fast charging protocol conversion circuit includes:

The processing unit is provided with a first communication pin, a second communication pin and a target communication pin; wherein, the first communication pin is used for data interaction between the charging input interface and the adapter through the first fast charging protocol The second communication pin is used for data interaction between the charging input interface and the adapter through the second fast charging protocol; the target communication pin is used for the charging output interface and the mobile terminal to pass the target fast charging protocol Data exchange; and

An identification unit electrically connected to the charging input interface and the processing unit;

The processing unit is also used to control the identification unit to identify whether the charging protocol of the adapter is one of the first fast charging protocol or the second fast charging protocol;

When it is recognized that the charging protocol of the adapter is one of the first fast charging protocol or the second fast charging protocol, the fast charging protocol currently supported by the adapter is converted into the target fast charging protocol, and according to The target fast charging protocol controls the adapter and the mobile terminal to enter a fast charging mode.
The fast charging protocol conversion circuit according to claim 1, wherein the fast charging protocol conversion circuit further comprises:

A conversion unit, electrically connected between the charging input interface and the charging output interface, and electrically connected to the processing unit;

The controlling the adapter and the mobile terminal to enter a fast charging mode according to the target fast charging protocol includes: controlling the conversion unit to output a target charging voltage and a target charging current according to the target fast charging protocol, thereby causing the The adapter and the mobile terminal enter a fast charging mode.
The fast charging protocol conversion circuit according to claim 1, wherein the identification unit is a switch; the switch is electrically connected to the charging input interface, the first communication pin, and the second communication lead foot;

The controlling the identification unit to identify whether the charging protocol of the adapter is one of the first fast charging protocol or the second fast charging protocol specifically includes:

When the switch establishes an electrical connection between the charging input interface and the first communication pin, the charging protocol of the adapter that communicates with the first communication pin through the charging input interface is determined Whether it is the first fast charging agreement; or

When the switch establishes an electrical connection between the charging input interface and the second communication pin, the charging protocol of the adapter that communicates with the second communication pin through the charging input interface is determined Whether it is the second fast charging agreement.
The fast charging protocol conversion circuit according to claim 1, wherein the identification unit is a switch; the switch is electrically connected to the charging input interface, the first communication pin, and the second communication lead foot;

The controlling the identification unit to identify whether the charging protocol adopted by the adapter is one of the first fast charging protocol or the second fast charging protocol specifically includes:

Controlling the switch to establish an electrical connection between the charging input interface and the first communication pin, and determining whether the charging protocol of the adapter is adapted to the first fast charging protocol;

When the charging protocol of the adapter does not match the first fast charging protocol, control the switch to establish an electrical connection between the charging input interface and the second communication pin, and determine the adapter's Whether the charging protocol is adapted to the second fast charging protocol.
The fast charging protocol conversion circuit according to claim 4, wherein the processing unit is further provided with a third communication pin, the third communication pin is provided for the charging input interface and the adapter to pass the third fast Charging protocol for data interaction; the switch is also electrically connected to the third communication pin;

When the charging protocol of the adapter does not match the second fast charging protocol, control the switch to establish an electrical connection between the charging input interface and the third communication pin, and determine the adapter's Whether the charging protocol matches the third fast charging protocol.
The fast charging protocol conversion circuit according to claim 3 or 4, wherein the switch is one of two switches.
The fast charging protocol conversion circuit according to claim 5, wherein the switch is one of three switches.
The fast charging protocol conversion circuit according to claim 1, wherein the first fast charging protocol and the second fast charging protocol are high voltage fast charging protocols; and the target fast charging protocol is low voltage and high current Fast charge agreement.
The fast charging protocol conversion circuit according to claim 8, wherein when the charging protocol of the adapter is adapted to the first fast charging protocol or the second fast charging protocol, the processing unit controls the The adapter increases the output voltage to a charging voltage that conforms to its fast charging protocol.
The fast charging protocol conversion circuit according to claim 2, wherein the fast charging protocol conversion circuit further comprises:

A sampling unit, electrically connected between the charging output interface and the processing unit, for sampling the charging current of the mobile terminal through the charging output interface to obtain a sampling current; and

An adjustment unit electrically connected between the conversion unit and the processing unit;

The processing unit is further configured to compare the sampling current with a reference current, and control the output of the adjustment unit according to the comparison result, and then control the conversion unit to adjust the output target charging current; wherein, the reference The current is the charging current currently required by the mobile terminal.
The fast charging protocol conversion circuit according to claim 1, wherein when the charging protocol of the adapter is not adapted to the first fast charging protocol or the second fast charging protocol, the processing unit controls The adapter and the mobile terminal enter a normal charging mode.
The fast charging protocol conversion circuit according to claim 1, wherein the processing unit is further used to identify the charging protocol of the mobile terminal, and when the charging protocol of the mobile terminal is recognized and the target fast charging When the protocol is not adapted, the adapter and the mobile terminal are controlled to enter a normal charging mode.
A fast charging protocol conversion device is characterized by comprising:

Charging input interface, used to connect with the adapter;

Charging output interface for connection to mobile terminals; and

The fast charging protocol conversion circuit according to any one of claims 1 to 12; the fast charging protocol conversion circuit is connected between the charging input interface and the charging output interface, and respectively passes through the charging input interface Establish a charging connection with the charging output interface, the adapter and the mobile terminal.
A fast charging protocol conversion method is applied to a fast charging protocol conversion device. The fast charging protocol conversion device includes an identification unit and is respectively connected to an adapter and a mobile terminal; the protocol conversion device defines a first fast charging Protocol, second fast charging protocol, and target fast charging protocol; characterized in that the fast charging protocol conversion method includes:

Controlling the identification unit to identify whether the charging protocol of the adapter is one of the first fast charging protocol or the second fast charging protocol;

When it is recognized that the charging protocol of the adapter is one of the first fast charging protocol or the second fast charging protocol, the fast charging protocol currently supported by the adapter is converted into the target fast charging protocol, and according to The target fast charging protocol controls the adapter and the mobile terminal to enter a fast charging mode.
The fast charging protocol conversion method according to claim 14, wherein the controlling the adapter and the mobile terminal to enter a fast charging mode according to the target fast charging protocol includes: controlling according to the target fast charging protocol The protocol conversion device outputs a target charging voltage and a target charging current, thereby causing the adapter and the mobile terminal to enter a fast charging mode.
The fast charging protocol conversion method according to claim 14, wherein the controlling the recognition unit recognizes whether the charging protocol of the adapter is one of the first fast charging protocol or the second fast charging protocol , Including:

Determine whether the charging protocol of the adapter is adapted to the first fast charging protocol;

When it is determined that the charging protocol of the adapter is not compatible with the first fast charging protocol, it is determined whether the charging protocol of the adapter is compatible with the second fast charging protocol.
The fast charging protocol conversion method according to claim 16, wherein the fast charging protocol conversion device further defines a third fast charging protocol; the method further includes:

When it is determined that the charging protocol of the adapter is not compatible with the second fast charging protocol, it is determined whether the charging protocol of the adapter is compatible with the third fast charging protocol.
The fast charging protocol conversion method according to claim 14, wherein the first fast charging protocol and the second fast charging protocol are high voltage fast charging protocols; and the target fast charging protocol is low voltage and high current Fast charge agreement.
The fast charging protocol conversion method according to claim 14, wherein the method further comprises:

When the charging protocol of the adapter does not match the first fast charging protocol or the second fast charging protocol, the adapter and the mobile terminal are controlled to enter a normal charging mode.
The fast charging protocol conversion method according to claim 14, characterized in that, in the method, the control unit recognizes whether the charging protocol of the adapter is the first fast charging protocol or the second fast charging protocol Before charging one step of the agreement, it also includes:

Identify the charging protocol of the mobile terminal, and when it is recognized that the charging protocol of the mobile terminal does not match the target fast charging protocol, control the adapter and the mobile terminal to enter a normal charging mode.