Control circuit of connecting line and connecting line

Abstract

The utility model relates to a connecting line control circuit and a connecting line, comprising an input end connected with an adapter or a power bank, an output end connected with a peripheral, a charging circuit connected between the input end and the output end, a master control circuit and a starting circuit connected with the master control circuit, the main control circuit is electrically connected with the charging circuit, the starting circuit is connected with the output end, and the starting circuit enables the input end to be matched with an adapter or a power bank protocol and then provides electric signals for the output end through the charging circuit to charge peripherals. The starting module is arranged in the circuit, the starting module and the shell are adopted to guarantee starting work of the connecting wire, and starting is more stable. And the distribution resistor arranged in the circuit dynamically adjusts the resistance value of the starting circuit, so that the starting circuit is adaptive to different adapters or power banks, and the application range is wider. The charging circuit and the starting circuit are both provided with current limiting circuits to prevent surge static electricity and protect circuit safety. Meanwhile, the anti-suspension module prevents the signal switch from being suspended, and the safety is higher.

Description

Technical Field

[0001] The utility model relates to the field of connecting wire control circuits and connecting wires, in particular to a connecting wire control circuit and a connecting wire. Background Art

[0002] USB Type-C connector is widely used in the field of electronic products due to its many advantages such as fast transmission speed and stable transmission performance. USB is the abbreviation of Universal Serial Bus, and its Chinese name is Universal Serial Bus. With the rapid development of communication technology, USB standard has also developed from USB2.0 to USB3.1. Commonly used interface types are also divided into Type-A, Type-B and Type-C. Its application fields involve floppy disk drives, digital cameras, CD / VCD-ROM, flash memory, tablets, mobile phones and other electronic products. In particular, the Type-C interface has a trend of being widely used in electronic products due to its fast transmission speed, small size, and reversible insertion. Moreover, with the continuous increase in the number of iPhone series mobile phone users, the two ends of the iPhone charging data cable generally use Type-C (charger end) and Lighting (mobile phone end), resulting in the iPhone charging data cable can only be charged in one direction, and cannot be charged in two directions, which brings great limitations when using it and cannot provide greater convenience for users. Existing cables suitable for Type-C and Lighting often leave the shell suspended at the start. Since the shell and the control board are connected via solder joints, long-term plugging and unplugging can easily cause the solder joints to loosen, resulting in poor contact, which in turn causes the start-up circuit to be invalid and the cable to fail to work properly. At the same time, due to the settings of the electronic components of the cable, it is impossible to adapt to adapters or power banks of different powers for use.

[0003] Chinese patent announcement number CN216720988U relates to a bidirectional charging device based on Lighting, including a charger with a Lighting charging interface and a Type-C charging interface, wherein the Lighting charging interface is used to connect to a Type-C charging head, and the Type-C charging interface is used to connect to a Type-C charging head; the charger has a unidirectional charging circuit for connecting the Type-C charging head to the Lighting charging head, the Lighting charging interface of the charger also has a charging control circuit, and the charger is also provided with a protocol circuit that communicates with the chip of the charging control circuit; reverse charging is performed when the chip of the protocol circuit communicates with the chip of the control circuit. The utility model realizes a bidirectional charging function, that is, it can realize charging from a Type-C charging head to a Lighting charging head, and it can also realize charging from a Lighting charging head to a Type-C charging head. Using one charging data line can complete two devices, allowing users to realize bidirectional charging through the data line, making the data line dual-purpose, improving the use efficiency, and increasing convenience. Although this patent provides a bidirectional charging device, since its shell is connected through a pull-down resistor, long-term plugging and unplugging can easily cause the connection to become loose, resulting in poor contact; and it cannot adapt to power banks and adapters of different power. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the existing connection cables applicable to Type-C and Lighting are often suspended at the start through the shell. Since the shell and the control board are connected by solder joints, long-term use of plugging and unplugging can easily lead to loose solder joints, resulting in poor contact, which leads to invalid startup circuits and inability of the connection cables to work properly. At the same time, due to the setting of the electronic components of the connection cables, it is impossible to adapt to different power adapters or power banks for use. In view of the above defects of the prior art, a control circuit and a connection cable are provided.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A control circuit of a connecting line is constructed, comprising an input end connected to an adapter or a power bank, and an output end connected to an external device, a charging circuit being connected between the input end and the output end, the control circuit also comprising a main control circuit, and a start-up circuit connected to the main control circuit, the main control circuit being electrically connected to the charging circuit, the start-up circuit being connected to the output end, and the start-up circuit adapts the input end to the adapter or power bank protocol and then provides an electrical signal to the output end through the charging circuit for charging the external device.

[0007] Preferably, the startup circuit is electrically connected to the input end, and the startup circuit is grounded. When the output end is not connected to an external device, the adapter electrical signal is grounded through the startup circuit.

[0008] Preferably, the start-up circuit is directly connected to the output end, and the electrical signal is directly protocol-adapted through the start-up circuit, or is connected to the output end through a main control circuit, and the electrical signal is transmitted to the start-up circuit through the main control circuit for protocol adaptation.

[0009] Preferably, the main control circuit is connected to the output end via a starting circuit.

[0010] Preferably, the charging circuit includes a starting module connected to the input end and the output end, and a first protection module connected to the input end, the first protection module is connected to the output end through a power switch module, the first protection module is connected to the main control circuit, and when the starting module detects an electrical signal, the power switch module is turned on to allow the charging circuit to flow electrical signals.

[0011] Preferably, the starting module includes a modulation module connected to the input end, and a signal switch module connected to the output end. The signal switch module is also connected to a second protection module, and the second protection module is electrically connected to the modulation module. When the signal switch module is turned on to turn on the starting circuit, the protocol is adapted and the charging circuit can perform charging.

[0012] Preferably, the second protection module is electrically connected to the main control circuit, and is connected to the output end through the main control circuit. The second protection module and the adjustment module are grounded, and the signal switch module is driven to open by the main control circuit.

[0013] Preferably, the second protection module is connected to the output end through the signal switch driving module, the second protection module and the signal switch driving module are connected to the power storage module, and the power storage module enhances the driving ability of the signal switch module.

[0014] Preferably, the signal switch module is connected to an anti-hanging module, and the anti-hanging module and the power storage module are grounded.

[0015] A connecting line is constructed, which includes a control circuit of a connecting line as described above, and the connecting line includes a connector L port used as an output terminal, the connector L port includes a shell, and a grounding pad arranged in the shell, and the grounding pad contacts the shell to ground the control circuit.

[0016] The beneficial effects of the utility model are as follows: by setting a starting module in the circuit, using the starting module + shell to ensure the starting work of the connecting line, the starting is more stable. And the adjustment resistor set in the circuit dynamically adjusts the resistance value of the starting circuit, so that it can adapt to different adapters or power banks, and has a wider range of applications. Current limiting circuits are set in both the charging circuit and the starting circuit to prevent surge static electricity and protect the circuit safety. At the same time, the anti-suspending module set avoids the signal switch from being suspended, which is safer. The power storage module can increase the driving ability of the signal switch, and the driving performance of the starting circuit is better, which makes it more convenient to use the connecting line during charging. In addition, multiple schemes enable the starting circuit to be started and then the charging circuit to be opened for charging when the mobile phone has power or no power. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work:

[0018] Figure 1 This is a structural principle block diagram of a control circuit of a connecting line of a preferred embodiment 1 of the utility model;

[0019] Figure 2 This is a structural principle block diagram of a charging circuit according to a preferred embodiment of the present utility model;

[0020] Figure 3 This is a structural principle block diagram of the starting circuit of the preferred embodiment 1 of the utility model;

[0021] Figure 4 A specific circuit diagram of a control circuit of a connecting line of a preferred embodiment 1 of the utility model;

[0022] Figure 5 This is a structural principle block diagram of a control circuit of a connecting line of a preferred embodiment 2 of the present utility model;

[0023] Figure 6 This is a structural principle block diagram of the starting circuit of the second preferred embodiment of the utility model;

[0024] Figure 7 A specific circuit diagram of a control circuit of a connecting line of a preferred embodiment 2 of the present utility model;

[0025] Figure 8 This is a structural principle block diagram of a control circuit of a connecting line of a third preferred embodiment of the present utility model;

[0026] Fig. 9 This is a structural principle block diagram of the starting circuit of the third preferred embodiment of the utility model;

[0027] Fig.10 A specific circuit diagram of a control circuit of a connecting line of a third preferred embodiment of the present utility model;

[0028] Fig.11 This is a structural diagram of the connector L port after grounding in a preferred embodiment of the utility model. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the following will be described clearly and completely in combination with the technical solution in the embodiments of the utility model. Obviously, the described embodiments are partial embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the utility model.

[0030] A control circuit of a connecting line in a preferred embodiment of the utility model; Figure 1 As shown, it includes a connector C port 10 connected to the input end, and a connector L port 30 connected to the output end, a charging circuit 20 is connected between the connector C port 10 and the connector L port, and a main control circuit 40 connected to the connector L port, and the main control circuit is connected to the charging circuit. The control circuit also includes a start-up circuit 50 connecting the connector C port and the connector L port, and the start-up circuit is connected to a ground 60. When the connector L port is connected to a device for output, the power of the device turns on the start-up circuit 50 and transmits an electrical signal to the main control circuit, and then the connector C port charges the device through the charging circuit. The connector C port is a TYPE-C type interface, which is connected to a power adapter or a connecting line as an electrical signal input to the connector; the connector L port is an Apple Lighting type interface, which is connected to a mobile phone or other type of device to charge such a device.

[0031] Specifically, Figure 2 The charging circuit 20 includes a starting module connected to the connector L port 30, the other end of the starting module is connected to the connector C port, and the connector L port is connected to the power switch module 202. The power switch module is connected to the first protection module 201 and then connected to the connector C port, and is also connected to the main control circuit 40.

[0032] Furthermore, if Figure 4As shown, the first protection module 201 includes a first resistor R1 and a second resistor R2 connected to the main control circuit, the first resistor and the second resistor are arranged in parallel, and the other end of the second resistor is connected to the third bidirectional voltage regulator diode D3, and the other end of the third bidirectional voltage regulator diode is connected to the other end of the first resistor. The first protection module composed of the first resistor R1, the second resistor R2 and the third bidirectional voltage regulator diode D3 has a current limiting effect to increase the driving ability during charging, and can also prevent surge static electricity. The power switch module 203 is a first MOS tube Q1, and the first MOS tube adopts a PMOS tube, whose source S is connected to the connector C port, the drain D is connected to the connector L port, and the gate G is connected to the first protection module; the startup module 200 is a third detection resistor R3, one end of the third detection resistor is connected to the connector C port and connected to the source S, and the other end is connected to the connector L port and connected to the drain D. When the mobile phone or charging device is out of power, the third resistor detects the current and acts as a startup resistor to open the protocol, so that the first MOS tube is turned on for charging.

[0033] Furthermore, if Figure 3 As shown, the start-up circuit 50 includes a deployment module 500 connected to the connector C port 10, and a signal switch module 501 connected to the deployment module, and the signal switch module is connected to the connector L port 30. The signal switch module 501 is also connected to a second protection module 503 and an anti-suspended module 502, the second protection module is connected to the connector L port through a signal switch driving module 504, the anti-suspended module 502 is grounded 60, and the second protection module 503 is connected to the power storage module 505 and then grounded.

[0034] Furthermore, if Figure 4As shown, the adjustment module 500 includes a fifth resistor R5 and a sixth resistor R6 arranged in series. The fifth resistor can be configured with a fixed resistance value, and the sixth resistor is configured with a non-fixed resistance value, so that the voltage and current are adapted through the adjustment module, and the CC voltage of the main control of different protocols is adapted to adapt to different connection lines or adapters. The signal switch module 501 adopts a second MOS tube, which adopts an NMOS tube, the drain D is connected to the adjustment module, the source S is grounded, and the gate G is connected to the second protection module 503, and is also connected to the anti-suspended module 502. The anti-suspended module 502 adopts an eighth resistor R8 connected in parallel at both ends of the source S and the gate G, and the first bidirectional voltage regulator diode D1 is also connected in parallel at both ends. The gate G is connected to the fourth resistor R4. The second protection module composed of the fourth resistor and the first bidirectional voltage regulator diode plays a current limiting role and can also prevent surge static electricity. The fourth resistor R4 is connected to the connector L port through the fourth diode D4, and the fourth resistor is connected to the cathode of the fourth diode. The fourth resistor is also grounded through the second capacitor C2. When the mobile phone is plugged into the connector L port and the mobile phone has residual power, the fourth diode is turned on. At this time, the main control circuit can know that the mobile phone has residual power, and then the connector C port charges the mobile phone through the charging circuit. The eighth resistor prevents the second MOS tube from being turned on and grounded through the eighth resistor when the mobile phone has no power and the connector C port is connected to the adapter, thereby preventing the mobile phone from hanging. In order to increase the driving ability of the signal switch, the second capacitor C2 is used to store electricity to increase the driving ability of the second MOS tube.

[0035] During use, when the mobile phone is not inserted into the connector L port, the start-up circuit is disconnected and does not work. At this time, the CC signal is disconnected, the adapter or the connecting line does not output, and there is no voltage or current output. When the connector L port is inserted into the mobile phone, the fourth diode is turned on and the second MOS tube is turned on, the CC signal is turned on, and the adapter can output voltage. When the connector L port is connected to the mobile phone, the mobile phone's electrical signal is turned on through the signal switch drive module, and then the electrical signal is transmitted to the signal switch module after the current is limited by the second protection module, and the signal switch module is turned on. After the configuration module is configured to obtain the adapted voltage resistance, the CC signal is turned on, and then the mobile phone is charged through the charging module. Due to the setting of the anti-suspended module, when the connector L port is not connected to the device, the eighth resistor grounds the electrical signal to make it a low-level signal.

[0036] A control circuit of a connecting line in a preferred embodiment 2 of the utility model; Figure 5 As shown, the difference from the first embodiment is that the start-up module 50 is connected to the connector L port 30 through the main control circuit 40. Figure 6 As shown, at this time, since the charging module is directly connected to the main control circuit, the driving signal switch circuit 501 can be directly provided by the main control circuit 40, so there is no need to design the signal switch start module 504, the power storage module 505 and the anti-suspended module 502.

[0037] Furthermore, if Figure 7 As shown, the fifth resistor R5 is connected to the first voltage zener diode D1 and the fourth resistor R4 which are arranged in series, and the other end of the fourth resistor is connected to the main control circuit. The fifth resistor is also connected to the second MOS tube. The MOS tube in the second embodiment adopts a PMOS tube, whose source S is connected to the fifth resistor and one end of the first voltage zener diode, the gate G is connected to the other end of the first voltage zener diode and the fourth resistor, the drain D is grounded, and the source S is connected to the shell of the connector L port at the same time, so that when the mobile phone has no power, the CC signal cannot be turned on and the adapter cannot output voltage, and the charging circuit cannot work. At this time, the connector L port is forced to be grounded. It should be noted that the solution of forced grounding of the connector L port can also be applied to the first embodiment, and the utility model does not draw this connection in the first embodiment.

[0038] When in use, after the connector L port is connected to a mobile phone, the electrical signal is transmitted to the main control chip, and the chip turns on the second MOS tube and the first MOS tube at the same time. After turning on the second MOS tube, the CC signal is turned on, and at the same time, the first MOS tube is turned on to make the charging circuit work to charge the mobile phone.

[0039] A control circuit of a connecting line according to a third preferred embodiment of the utility model; Figure 8 As shown, the difference from the first embodiment is that the connector C port 10 is only connected to the charging circuit 20 but not to the starting circuit 50 , and the main control circuit 40 is connected to the connector L port 30 through the starting circuit 50 .

[0040] Furthermore, if Fig. 9 As shown, the main control circuit 40 is connected to the adjustment module 500 and the signal switch driving module 504, the signal switch driving module is connected to the power storage module, and other connections are the same as those in the first embodiment, which will not be described in detail here. Fig.10 As shown, the source S of the second MOS tube is connected to the main control circuit, the gate G is connected to the second protection module, and the drain D is connected to the eighth resistor R8 and then connected to the connector L port.

[0041] When in use, after the connector L port is connected to the mobile phone, the fourth diode D4 is turned on, and then the second MOS tube is driven to turn on so that the CC protocol of the main control circuit is turned on, and the adapter can flow electrical signals, and then charge through the charging circuit. It should be noted that embodiment 3 is only applicable to the mobile phone when there is still power, and the CC protocol can be turned on for charging, while embodiments 1 and 2 can turn on the CC protocol for charging when the mobile phone has power or no power.

[0042] A connecting wire of a preferred embodiment of the utility model; the connecting wire includes a control circuit of a connecting wire as described above, and the specific control circuit is the same as the above, and will not be repeated here, such as Fig.11As shown, an L-shaped grounding pad is provided on the connector L port to contact the connector L port housing for grounding. Two groups of L-shaped grounding pads are provided, one on the left and one on the right.

[0043] It should be understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present invention.

Claims

1. A control circuit of a connecting line, comprising an input end connected to an adapter or a power bank, and an output end connected to an external device, wherein a charging circuit is connected between the input end and the output end, characterized in that: The control circuit also includes a main control circuit and a starting circuit connected to the main control circuit. The main control circuit is electrically connected to the charging circuit, and the starting circuit is connected to the output end. The starting circuit adapts the input end to the adapter or power bank protocol and then provides an electrical signal to the output end through the charging circuit for charging the peripheral device.

2. The control circuit according to claim 1, characterized in that: The startup circuit is electrically connected to the input end, and the startup circuit is grounded. When the output end is not connected to an external device, the adapter electrical signal is grounded through the startup circuit.

3. The control circuit according to claim 2, characterized in that: The start-up circuit is directly connected to the output end, and the electrical signal is directly adapted to the protocol through the start-up circuit, or is connected to the output end through the main control circuit, and the electrical signal is transmitted to the start-up circuit through the main control circuit for protocol adaptation.

4. The control circuit according to claim 1, characterized in that: The main control circuit is connected to the output end through a starting circuit.

5. The control circuit according to any one of claims 1 to 4, characterized in that: The charging circuit includes a startup module connected to an input end and an output end, and a first protection module connected to the input end. The first protection module is connected to the output end through a power switch module. The first protection module is connected to a main control circuit. When the startup module detects an electrical signal, the power switch module is turned on to allow the charging circuit to flow electrical signals.

6. The control circuit according to claim 5, characterized in that: The starting module includes a modulation module connected to the input end, and a signal switch module connected to the output end. The signal switch module is also connected to a second protection module, and the second protection module is electrically connected to the modulation module. When the signal switch module is turned on to turn on the starting circuit, the protocol is adapted and the charging circuit can perform charging.

7. The control circuit according to claim 6, characterized in that: The second protection module is electrically connected to the main control circuit and connected to the output end through the main control circuit. The second protection module and the adjustment module are grounded, and the signal switch module is driven to open by the main control circuit.

8. The control circuit according to claim 6, characterized in that: The second protection module is connected to the output end through the signal switch driving module. The second protection module and the signal switch driving module are connected to the power storage module. The power storage module enhances the driving capability of the signal switch module.

9. The control circuit according to claim 8, characterized in that: The signal switch module is connected to an anti-hanging module, and the anti-hanging module and the power storage module are grounded.

10. A connecting line, characterized in that: The connecting line includes a control circuit of a connecting line as described in any one of claims 1-9, the connecting line includes a connector L port used as an output end, the connector L port includes a shell, and a grounding pad arranged in the shell, the grounding pad is in contact with the shell to ground the control circuit.

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