Data line self-checking device with TYPE-A interface

Abstract

The utility model discloses a data line self-checking device with a TYPE-A interface, which comprises a power supply unit, an intelligent fast charging control unit, a first interface, a second interface, a switching unit and an input and output control unit, and is characterized in that the intelligent fast charging control unit is respectively connected with the input and output control unit, the switching unit, the first interface and the second interface; the input and output control unit is respectively connected with the power supply unit, the first interface and the second interface, and the first interface comprises a TYPE-A interface. By implementing the circuit provided by the utility model, the self-inspection of the wire harness in charging connection can be realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to data line technical field especially relates to a data line self -checking device with TYPE -A interface. BACKGROUND

[0002] Most of the chargers and adapters on the current market, whether equipped with 1A, 2C interface or other types of USB interface, the main function is limited to providing power output for mobile phones and other devices. The A port or C port of the USB of these devices usually only has output function, lacks input detection capability. This means that they cannot assess the status of the connected data line, such as internal resistance size, voltage drop, etc., thus leading to a series of problems, such as the quality of data lines on the market is uneven, from inferior to superior, the price difference can reach more than 100 times, users often have difficulty in judging whether the data line used is suitable for high-power charging. When 35W to 300W high-power chargers are used with low-quality data lines, not only will it lead to low charging efficiency, but also may cause fire risk due to overheating. In some cases, poor data lines may prevent the charging process, and even damage the charged devices, such as smartphones, tablets or laptops.

[0003] Therefore, it is necessary to design a new circuit to realize self-checking of the wire harness connected for charging. SUMMARY

[0004] The utility model aims at overcoming the defects of prior art, provides a data line self -checking device with TYPE -A interface.

[0005] To solve the above technical problems, the utility model aims at realizing through the following technical schemes: provide a data line self -checking device with TYPE -A interface, include: power unit, intelligent fast -charging control unit, first interface, second interface, switch unit and input output control unit, intelligent fast -charging control unit is connected with input output control unit, switch unit, first interface, second interface respectively;The input output control unit is connected with the power unit, the first interface and the second interface respectively, wherein, the first interface includes TYPE -A interface.

[0006] Its further technical scheme is that the power unit includes AD-DC charger.

[0007] A further technical solution thereof is that the intelligent fast charging control unit comprises a control chip, a protocol processing chip and a BUCK-BOOST chip, the control chip is connected with the BUCK-BOOST chip and the protocol processing chip respectively; the control chip is connected with the input and output control unit, the switching unit, the first interface and the second interface respectively; the protocol processing chip is connected with the first interface and the second interface respectively; and the BUCK-BOOST chip is connected with the first interface and the second interface respectively.

[0008] A further technical solution thereof is that the switching unit comprises a switch piece.

[0009] A further technical solution thereof is that the intelligent fast charging control unit is further connected with a touch switch, one end of the touch switch is grounded.

[0010] A further technical solution thereof is that the second interface comprises a TYPE-C interface.

[0011] A further technical solution thereof is that the input and output control unit comprises a first switch piece, a second switch piece, a third switch piece and a fourth switch piece, the first switch piece is connected with the power supply unit, the intelligent fast charging control unit and the first interface respectively; the third switch piece is connected with the power supply unit, the intelligent fast charging control unit and the second interface respectively; the second switch piece is connected between the first switch piece and the first interface, and the second switch piece is connected with the intelligent fast charging control unit; and the fourth switch piece is connected between the second switch piece and the second interface, and the fourth switch piece is connected with the intelligent fast charging control unit.

[0012] A further technical solution thereof is that a display module is further included, and the display module is connected with the intelligent fast charging control unit.

[0013] A further technical solution thereof is that the display module comprises a display screen.

[0014] A further technical solution thereof is that the display module comprises an LED lamp.

[0015] The utility model discloses compared with prior art has the beneficial effects that the utility model discloses through setting power supply unit, intelligent fast charging control unit, first interface, second interface, switching unit and input and output control unit, when the data line of one end TYPE-C interface and the other end TYPE-A interface is connected to first interface and second interface, power supply unit provides stable electric power for intelligent fast charging control unit, and intelligent fast charging control unit utilizes its connection with switching unit, creates self-checking loop, measures the voltage drop on the data line, realizes the wire harness of charging connection and carries out self-checking.

[0016] The utility model will be further described below in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to make the technical scheme of the utility model embodiment clearer, the drawings needed in the embodiment description will be briefly introduced below, obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0018] Figure 1 A schematic diagram of the data line self-checking device with TYPE-A interface provided by the utility model embodiment is shown in the figure.

[0019] Figure 2 The specific circuit schematic diagram of the data line self-checking device with TYPE-A interface provided by the utility model embodiment is shown in the figure.

[0020] Figure 3 The principle schematic diagram of the data line self-checking device with TYPE-A interface provided by the utility model embodiment is shown in the figure.

[0021] Explanation of the figure:

[0022] 10, power supply unit;20, intelligent fast charging control unit;30, first interface;40, second interface;50, switching unit;60, input and output control unit;70, display module. DETAILED DESCRIPTION

[0023] The technical scheme in the utility model embodiment will be described clearly and completely below in combination with the drawings in the utility model embodiment, obviously, the described embodiments are some embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0024] It should be understood that when used in the specification and the appended claims, the terms "include" and "contain" indicate the existence of the described features, whole, steps, operations, elements and / or components, but do not exclude the existence or addition of one or more other features, whole, steps, operations, elements, components and / or their sets.

[0025] It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used in this specification and the appended claims, the singular forms "a," "an" and "the" include plural referents unless the context clearly dictates otherwise.

[0026] It is further to be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items, and that the term "at least one of' encompasses any and all possible combinations of one or more of the associated listed items.

[0027] Most current chargers and adapters lack input detection functionality for connected data cables, and are unable to assess the quality and electrical performance of the data cable. Due to the uneven quality of data cables on the market, users have difficulty determining whether high-power charging is suitable, which can lead to low charging efficiency or damage to equipment. Low-quality data cables can cause overheating and even fire risks when used under high-power chargers. Devices lacking input detection functionality cannot effectively avoid these safety hazards, affecting the reliability and safety of the charging process.

[0028] To this end, the utility model embodiment provides a data cable self-checking device with a TYPE-A interface, which realizes self-checking of the wire harness for charging connection, ensures all-round high-performance charging experience from enhanced safety, optimized charging efficiency to prevention of overheating and fire accidents, and realizes fast and stable safe charging.

[0029] Specifically, the data cable self-checking device with a TYPE-A interface realizes comprehensive detection of the charging connection wire harness by integrating a power supply unit 10, an intelligent fast charging control unit 20, an input second interface 40, and a switching unit 50. Specifically, when both the TYPE-C input and the second interface 40 are connected with data cables, a control chip in the intelligent fast charging control unit 20 activates a specific switch, forming a closed loop between the input and the output, thereby evaluating the integrity of the current path. At the same time, by monitoring the voltage change in the closed loop, the intelligent fast charging control unit 20 can judge the quality of the wire harness and feed back the detection result to the user through a display module 70 (such as an LED lamp or a display screen). In addition, the built-in BUCK-BOOST chip ensures the stability and efficiency of power transmission, and the protocol chip is responsible for managing the fast charging protocol, ensuring compatibility between different devices. This series of mechanisms work together not only to enhance the safety of the charging process, but also to effectively prevent overheating and potential fire risks, providing users with fast and stable charging experience.

[0030] In order to better understand the above technical solutions, the above technical solutions will be described in detail in conjunction with the drawings in the specification and specific embodiments.

[0031] Please refer to Figure 1 , Figure 1 The schematic diagram of the data line self-checking device with TYPE-A interface provided by the embodiment of the utility model, the circuit can be used in the charger, realizes the self-checking to the wire harness of charging connection, ensures the all-around high performance charging experience from enhancing safety, optimizing charging efficiency to preventing overheating and fire accident, realizes the fast and stable safe charging.

[0032] The data line self-checking device with TYPE-A interface, including: power unit 10, intelligent fast charging control unit 20, first interface 30, second interface 40, switching unit 50 and input and output control unit 60, intelligent fast charging control unit 20 is connected with input and output control unit 60, switching unit 50, first interface 30, second interface 40 respectively;Input and output control unit 60 is connected with power unit 10, first interface 30 and second interface 40 respectively, wherein, first interface 30 includes TYPE-A interface.

[0033] In the embodiment, there are two main forms of data lines:

[0034] The data line with double-end TYPE-C interface is suitable for connecting two devices supporting TYPE-C interface.

[0035] The data line with one end as TYPE-A interface and the other end as TYPE-C interface is suitable for connecting traditional USB devices and new TYPE-C devices.

[0036] The device of the embodiment is based on the following principles:

[0037] During charging, the protocol chip is responsible for monitoring and managing voltage and current. For the data line with double-end TYPE-C interface, when the two ends are connected, the protocol chip can provide a specific voltage (such as 5V or 9V) and monitor the loop state transmitted through the cable to the other end and returned to the protocol chip. This process involves the following steps:

[0038] First, as shown in Figure 3 , the protocol chip will detect whether a complete loop is formed between A end and B end. Only when the loop is confirmed to be established, the self-checking program will be started.

[0039] Once the loop is established, the system will select a fixed current value (for example, in the range of 0.5-3A) for testing and apply the corresponding voltage (such as 5V).

[0040] Since a fixed current value is selected, according to Ohm's law (U = I * R), the resistance value of the wire harness can be calculated by measuring the voltage difference between A and B. Different wire harnesses have different resistance values, which affect the final voltage at B.

[0041] By comparing the voltage difference between A and B or directly measuring the resistance, the protocol IC can evaluate the status of the wire harness and determine whether it is suitable for the current charging needs.

[0042] Specifically, the evaluation of wire harness quality is based on its maximum working current and corresponding internal resistance, usually represented by AWG (American Wire Gauge) specifications. Here are specific evaluation methods for wire harnesses of different grades:

[0043] Using AWG17 wire harness, its design working current exceeds 4.1A, and the internal resistance is 16.3Ω / Km. For a one-meter long wire harness, under the condition of 5V / 3A, the ideal voltage measured at B should be close to 4.951V or higher. This indicates that the wire harness has low resistance characteristics and is the best choice.

[0044] For AWG18 wire harness, its working current range is above 3.2A, and the internal resistance is 21.4Ω / Km. Under the same conditions, if the voltage measured at B is between 4.938V and 4.950V, the wire harness is considered to be of ordinary grade.

[0045] AWG19 wire harness, suitable for working current above 2.6A, internal resistance 26.9Ω / Km. If the voltage at B is lower than 4.919V or between 4.919V and 4.937V, it indicates that the wire harness quality is poor and may not be suitable for high-performance charging needs.

[0046] In summary, the circuit of the present embodiment realizes effective self-checking of the charging wire harness through precise voltage, current control and impedance measurement technology, ensuring safe and efficient charging experience. At the same time, through clear evaluation criteria, users can easily identify the quality level of the wire harness and choose the most suitable charging accessories for their own devices.

[0047] Specifically, the power supply unit 10: as the power supply core of the entire system, the power supply unit 10 is responsible for providing stable direct current to other components in the system.

[0048] The intelligent fast charging control unit 20 is the core part of the data line self-test device with TYPE-A interface, which contains control chips, protocol processing chips, and BUCK-BOOST chips. These components work together to achieve fast charging function, and through the control chip to coordinate the connection with the input and output control unit 60, the switching unit 50 and the interface, to manage the charging process. At the same time, the protocol processing chip ensures compatibility with different types of devices, and the BUCK-BOOST chip is responsible for adjusting the voltage level to ensure the safety and efficiency of charging.

[0049] The first interface 30 and the second interface 40 are the key points of connecting external devices, usually adopting TYPE-C interface, because they support bidirectional data transmission and have high current carrying capacity. This makes the data line not only can be used as a power line, but also can be used as a data transmission line, increasing its versatility.

[0050] The switching unit 50 operates under the command of the intelligent fast charging control unit 20, used to switch different charging paths or states. For example, when self-testing, switch the working state to build a self-test loop.

[0051] The input and output control unit 60 acts as a bridge, connecting the power supply unit 10, the intelligent fast charging control unit 20 and the input second interface 40. It controls the flow of power according to the instructions of the intelligent fast charging control unit 20, ensuring that charging will only start when all conditions are met.

[0052] In summary, the data line self-test device with TYPE-A interface is designed to provide a safe and efficient charging solution. Through the precise cooperation between components, it realizes the automatic detection of charging cable, guarantees the safety and reliability of the charging process, and optimizes the charging speed and efficiency. This design scheme is particularly suitable for application scenarios that require high-performance charging experience, such as smartphones, tablets and other portable electronic devices.

[0053] In an embodiment, please refer to Figure 2 The power supply unit 10 described above includes an AD-DC charger. The power supply unit 1010 is mainly composed of an AC-DC charger in this embodiment, which is designed to accept a wide range of AC input voltage, i.e. AC 96V~240V. This wide input voltage range makes the charger suitable for different power standards in different regions around the world. The main task of the AC-DC charger is to convert alternating current to direct current to provide necessary power support for the entire self-test device.

[0054] The AC-DC charger is connected to the input of the intelligent fast charging control unit 20 through Figure 2The connection point marked as VIN accesses the entire device. This connection point is the energy inlet of the entire circuit, ensuring that the power from the external power grid can be safely and stably transmitted to subsequent modules. In order to achieve efficient energy conversion, advanced power conversion technology is used inside the AC-DC charger, such as using high-frequency switching mode power supply to improve efficiency and reduce volume.

[0055] In an embodiment, referring to Figure 2 The intelligent fast charging control unit 20 described above includes a control chip, a protocol processing chip, and a BUCK-BOOST chip. The control chip is connected with the BUCK-BOOST chip and the protocol processing chip respectively. The control chip is connected with the input-output control unit 60, the switching unit 50, the first interface 30, and the second interface 40 respectively. The protocol processing chip is connected with the first interface 30 and the second interface 40 respectively. The BUCK-BOOST chip is connected with the first interface 30 and the second interface 40 respectively.

[0056] Specifically, these three chips work together to achieve intelligent fast charging function and ensure the safety and efficiency of the charging process.

[0057] The control chip is responsible for managing and coordinating the operation of all other components. It receives status information from the input-output control unit 60, processes instructions issued by users or devices, and adjusts charging parameters according to current conditions.

[0058] The control chip is connected with the BUCK-BOOST chip, which adjusts the output voltage by sending control signals to adapt to the needs of different devices.

[0059] The control chip is connected with the protocol processing chip to parse and respond to various fast charging protocols, ensuring good compatibility with multiple types of terminal devices.

[0060] The control chip communicates directly with the input-output control unit 60, the switching unit 50, the first interface 30, and the second interface 40, thereby comprehensively monitoring and managing various activities during the charging process.

[0061] The protocol processing chip is specifically used to identify and support multiple fast charging protocols (such as Qualcomm Quick Charge, USB Power Delivery, etc.), allowing the data line to automatically match the best charging mode for the connected device.

[0062] The control chip is connected with the first interface 30 and the second interface 40 to monitor the fast charging standards supported by the devices at both ends in real time and transmit relevant information to the control chip for decision-making.

[0063] The BUCK-BOOST chip is a high-efficiency DC-DC converter that can flexibly switch between BUCK and BOOST to ensure that the output voltage is stable and meets the requirements of the device being charged regardless of the input power voltage.

[0064] The BUCK-BOOST chip is also connected to the first interface 30 and the second interface 40, ensuring that it can accurately obtain the input voltage level and adjust the output accordingly to maintain the ideal charging state.

[0065] When the user inserts the device into one end of the data line, the first interface 30 will first detect this action and report the available fast charging protocol to the protocol processing chip. After analysis, the protocol processing chip sends the result to the control chip, which selects the most suitable charging scheme based on the obtained information. Then, the control chip instructs the BUCK-BOOST chip to adjust to the appropriate voltage level, while informing the input-output control unit 60 and the switching unit 50 to prepare to start charging.

[0066] In an embodiment, the switching unit 50 described above includes a switching component. Please refer to Figure 2 The switching component includes MOS tube Q1. MOS tube is a field-effect transistor that plays the role of a switch in the circuit, used to control the selection of the current path to achieve switching between different working modes.

[0067] In an embodiment, please refer to Figure 2 The first interface 30 described above includes a TYPE-A interface, specifically a type-a interface.

[0068] In an embodiment, please refer to Figure 2 The second interface 40 described above includes a TYPE-C interface, specifically a type-c interface.

[0069] The second interface 40 is a type-c1 interface responsible for providing power output or data exchange to external devices. It follows the TYPE-C standard and is compatible with multiple types of terminal devices, ensuring a wide range of applications.

[0070] In an embodiment, please refer to Figure 2The input and output control unit 60 described above includes a first switch, a second switch, a third switch, and a fourth switch. The first switch is connected with the power supply unit 10, the intelligent fast charging control unit 20, and the first interface 30 respectively. The third switch is connected with the power supply unit 10, the intelligent fast charging control unit 20, and the second interface 40 respectively. The second switch is connected between the first switch and the first interface 30, and is connected with the intelligent fast charging control unit 20. The fourth switch is connected between the second switch and the second interface 40, and is connected with the intelligent fast charging control unit 20.

[0071] In this embodiment, the first switch includes a MOS tube Q2, the second switch includes a MOS tube Q3, the third switch includes a MOS tube Q4, and the fourth switch includes a MOS tube Q5.

[0072] Specifically, the MOS tube Q2 is responsible for receiving the direct current voltage converted from the AC 96V-240V AC-DC charger, and performs switching operation according to the instructions issued by the intelligent fast charging control unit 20, to realize the power supply control of the first interface 30.

[0073] The MOS tube Q3 is used to further adjust or cut off the current path to the first interface 30, especially in the case of detecting abnormal conditions.

[0074] The MOS tube Q4 also undertakes the task of transmitting power from the power supply to the second interface 40, but considering the TYPE-C2 supports the bidirectional charging feature, its role is more complex.

[0075] The MOS tube Q5 can participate in the control of the power flow on the second interface 40, especially in the case of handling TYPE-C2 as an input.

[0076] In addition, an inductor L1 is connected between the MOS tube Q2 and the MOS tube Q3, and an inductor L2 is connected between the MOS tube Q4 and the MOS tube Q5.

[0077] In an embodiment, please refer to Figure 1 and Figure 2 The data line self-checking device with TYPE-A interface described above further includes a display module 70, which is connected with the intelligent fast charging control unit 20.

[0078] Specifically, the data line self-checking device with TYPE-A interface described above not only has power management and control functions, but also integrates a display module 70, which is directly connected with the intelligent fast charging control unit 20. Through this display module 70, the user can intuitively obtain information feedback about the charging status and the quality of the data line.

[0079] In an embodiment, please refer toFigure 1 And Figure 2 The display module 70 described above includes a display screen. This display screen can be an LCD, OLED, or any other type of screen used to present more detailed system information, such as the current charging voltage, current value, connected device type, and so on. In addition, it can also be used to display the results of the data line self-test, such as presenting the cable resistance measurement values in numerical or graphical form, and giving the corresponding evaluation grade (e.g., "Best", "Good", "Average", "Poor"). This visual way of information delivery greatly enhances the user experience, allowing the user to have a clearer understanding of the charging system's operating status and the quality of the cable used.

[0080] In an embodiment, referring to Figure 1 And Figure 2 The display module 70 described above includes LED lights. These LED lights are designed to provide immediate status indication, especially for quick feedback during the data line self-test process. Specifically, when performing the self-test, different LED colors or flashing patterns can represent different cable quality grades, for example, green for "Best", yellow for "Average", and red for "Poor". Such a design not only is simple and intuitive, but also provides basic visual cues even without power, making it very suitable for application scenarios that require quick judgment of cable status.

[0081] In this embodiment, by combining the use of a display screen and LED lights as part of the display module 70, not only does it provide a comprehensive and intuitive operating interface for the user, but it also ensures that essential status information can be obtained even under the most basic conditions. This not only improves the product's ease of use and reliability, but also lays a solid foundation for further enhancing the user experience.

[0082] In an embodiment, referring to Figure 2 The intelligent fast charging control unit 20 described above is connected to the first interface 30 through the resistor RCS1; the intelligent fast charging control unit 20 is connected to the second interface 40 through the resistor RCS2; the MOS tube Q1 is connected to the second interface 40 through the resistor RS.

[0083] The resistor RCS1 here plays a role in current limiting, protecting the circuit from overload damage while also helping to stabilize the input voltage, ensuring the normal operation of the BUCK chip.

[0084] Similarly, the resistor RCS2 helps to adjust and stabilize the output voltage, ensuring the safety and reliability of power supply to external devices.

[0085] The resistor RS not only helps to control the working state of the MOS tube, but also provides necessary electrical isolation to prevent possible short circuits or other abnormal conditions from affecting the entire system.

[0086] Please refer to Figure 2 The working process of the entire circuit is as follows:

[0087] VIN represents the power input obtained from the AC 96V~240V AC-DC charger. The TYPE-A interface (its 2-pin and 3-pin are connected to the DPA and DMA pins of the smart fast charging control unit 20 respectively) communicates with the mobile phone or computer terminal through the data line to perform handshaking. After the handshaking is completed, the smart fast charging control unit 20 adjusts the voltage and current finally output to the connected device by controlling the MOS tube Q2 according to the communication result.

[0088] The TYPE-C interface is not only used as an output terminal, but also has input function, which is due to the design of the smart fast charging control unit 20. The 5, 6, 7, 8, 9 pins of the TYPE-C interface are connected to the CCB1, CCB2, DPB, DMB pins of the smart fast charging control unit 20 respectively, and also support communication handshaking with the terminal device.

[0089] After the handshaking is completed, the smart fast charging control unit 20 adjusts the voltage and current finally output to the connected device by controlling the MOS tube Q4; when the TYPE-C interface is used as input, the MOS tube Q5 is used to control the received power.

[0090] For a data line with one end being a TYPE-C interface and the other end being a TYPE-A interface, self-checking can be achieved by the following steps:

[0091] VOUT1 is connected to the corresponding pins of the TYPE-C2 interface through the 3rd, 4th, 13th, and 14th pins of the TYPE-A interface, and then reaches the TYPE-C interface.

[0092] After the user touches the touch switch S1, the smart fast charging control unit 20 sends an electrical signal to a specific pin (for example, the 2nd pin) of the smart fast charging control unit 20, and then G1 gives a level signal to turn on the MOS tube Q1, which is short-circuited to the ground.

[0093] At this time, the current will pass through the VOUT2 ground back to the VOUT2 pin of the smart fast charging control unit 20 chip, and the VOUT1 is connected to another VOUT1 pin of the smart fast charging control unit 20, forming a complete current loop.

[0094] By measuring the voltage difference between VOUT1 and VOUT2, ΔV=VOUT1-VOUT2, the resistance value of the data line can be calculated to judge the quality of the data line, including: "best", "general" or "poor".

[0095] Finally, the smart fast charging control unit 20 controls the state of the LED lamp through its SCL and SDA pins according to the above judgment information, which intuitively displays the quality level of the data line.

[0096] In the embodiment, please refer to Figure 2 The model of the intelligent fast charging control unit 20 is MS32F031A6, but is not limited to it.

[0097] The data line self-checking device with TYPE-A interface, by setting the power supply unit 10, the intelligent fast charging control unit 20, the first interface 30, the second interface 40, the switching unit 50 and the input and output control unit 60, when the data line with one end of TYPE-C interface and the other end of TYPE-A interface is connected to the first interface 30 and the second interface 40, the power supply unit 10 provides stable power to the intelligent fast charging control unit 20, the intelligent fast charging control unit 20 creates a self-checking loop by connecting with the switching unit 50, measures the voltage drop on the data line, and realizes self-checking of the charging connection wire harness.

[0098] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A data line self-checking device with a TYPE-A interface, characterized in that, The application relates to a smart fast charging device, which comprises a power unit, a smart fast charging control unit, a first interface, a second interface, a switching unit and an input-output control unit. The power unit comprises an AD-DC charger.

2. The data line self-checking device with TYPE-A interface according to claim 1, characterized in that, The smart fast charging control unit comprises a control chip, a protocol processing chip and a BUCK-BOOST chip.

3. The data line self-checking device with TYPE-A interface according to claim 1, characterized in that, The switching unit comprises a switch.

4. The data line self-checking device with TYPE-A interface according to claim 1, characterized in that, The smart fast charging control unit is further connected with a touch switch, one end of the touch switch being grounded.

5. The data line self-checking device with TYPE-A interface according to claim 1, characterized in that, The second interface comprises a TYPE-C interface.

6. The data line self-checking device with TYPE-A interface according to claim 1, characterized in that, The input-output control unit comprises a first switch, a second switch, a third switch and a fourth switch.

7. The data line self-checking device with TYPE-A interface according to any one of claims 1 to 6, characterized in that, The application further comprises a display module, which is connected with the smart fast charging control unit.

8. The data line self-checking device with TYPE-A interface according to claim 1, characterized in that, The display module comprises a display screen.

9. The data line self-checking device with TYPE-A interface according to claim 8, characterized in that, The display module comprises an LED lamp.

10. The data line self-checking device with TYPE-A interface according to claim 8, characterized in that, ​

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