Multi-Type-C port intelligent switching control system based on protocol library multiplexing

Abstract

The invention discloses a multi-Type-C port intelligent switching control system based on protocol library multiplexing, which can realize dynamic allocation of protocol library resources among a plurality of Type-C ports only by using a single multi-protocol library PD chip through an innovative hardware switching circuit and intelligent control logic. The industrial problem that fast charging cannot be achieved due to protocol library conflicts when multiple ports are used at the same time is fundamentally solved, it is ensured that the fast charging function can be achieved through simultaneous insertion of any two ports, meanwhile, the system cost and complexity are remarkably reduced, and the user experience and the product competitiveness are greatly improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of electronic circuits, and particularly relates to a multi-Type-C port intelligent switching control system based on protocol library multiplexing. BACKGROUND

[0002] The USB Power Delivery (PD) protocol has become the mainstream standard for fast charging of modern electronic devices. The Type-C interface is widely used due to its convenience of insertion in both directions, and its power negotiation and role configuration are mainly completed through the Configuration Channel (CC) signal.

[0003] With the increasing demand for multi-device charging, products such as chargers, car chargers, and charging docking stations often need to be equipped with multiple Type-C ports. Currently, the mainstream solution to enable multiple Type-C ports to support PD fast charging is "one port one chip", that is, each Type-C port is equipped with an independent PD protocol chip. Although this solution is fully functional, it is costly, complex in circuit structure, and occupies a large area of PCB.

[0004] There are also some single PD protocol chips on the market that integrate multiple protocol libraries. For example, a PD protocol chip may have two independent protocol libraries built-in and provide three sets of CC signal pins. Among them, two sets of CC signals (e.g., CC1_B and CC1_C) may share the same protocol library, while the other set of CC signals (e.g., CC1_A) uses an independent protocol library. Under this architecture, if two CC ports (corresponding to CC1_B and CC1_C) that share the same protocol library are inserted at the same time, PD fast charging cannot be provided for both devices due to protocol library conflicts, resulting in a decline in user experience.

[0005] Therefore, in view of the above technical problems and defects, there is an urgent need to design and develop a multi-Type-C port intelligent switching control system based on protocol library multiplexing. SUMMARY

[0006] To overcome the deficiencies and difficulties of the prior art, the present application provides a multi-Type-C port intelligent switching control system based on protocol library multiplexing to realize intelligent switching of multiple Type-C ports simultaneously fast charging using a single protocol chip.

[0007] The purpose of the present application is to provide a multi-Type-C port intelligent switching control system based on protocol library multiplexing. The purpose of the present application is achieved as follows: the system includes a protocol chip, the protocol chip has at least two independent protocol libraries integrated inside, and at least three configuration channel signal pins are provided correspondingly. And at least three Type-C ports for connecting external devices; A switching circuit has its signal input terminal connected to at least three configuration channel signal pins of the protocol chip, and its signal output terminal connected to the configuration channel pins of the at least three Type-C ports; wherein the switching circuit is configured to dynamically establish a connection path between the configuration channel signal pins of the protocol chip and the configuration channel pins of the Type-C ports in response to state changes of the at least three Type-C ports, so that when at least two Type-C ports are simultaneously connected to external devices, different independent protocol libraries in the protocol chip can be allocated to the at least two Type-C ports simultaneously connected to external devices, thereby realizing multi-port simultaneous fast charging.

[0008] Furthermore, the protocol chip provides at least three configuration channel signal pins, including one exclusive configuration channel pin corresponding to the first independent protocol library, and two shared configuration channel pins corresponding to the second independent protocol library.

[0009] Furthermore, the switching circuit includes at least one single-pole double-throw analog switch; The moving end of the single-pole double-throw analog switch is connected to the exclusive configuration channel pin of the protocol chip, and its first stationary end and second stationary end are respectively connected to the configuration channel pins of the first target Type-C port and the second target Type-C port.

[0010] Furthermore, the model number of the analog switch is SGM3157YC6; The fifth pin of the analog switch is connected to one end of a resistor and one end of a capacitor, respectively; the other end of the resistor is connected to the power supply terminal; and the other end of the capacitor is connected to the ground terminal.

[0011] Furthermore, the switching circuit also includes a control logic unit for monitoring the status of the Type-C ports connected to the two shared configuration channel pins corresponding to the second independent protocol library, and generating a control signal to the selection terminal of the single-pole double-throw analog switch based on the monitoring results.

[0012] Furthermore, the control logic unit is configured as follows: When it is detected that only one of the Type-C ports connected to the two shared configuration channel pins is in a connected state, the single-pole double-throw analog switch is controlled to connect the exclusive configuration channel pin to the stationary terminal corresponding to the non-connected Type-C port; when it is detected that the Type-C ports connected to the two shared configuration channel pins are in a connected state at the same time, the single-pole double-throw analog switch is controlled to switch the exclusive configuration channel pin to the stationary terminal corresponding to one of the pre-specified Type-C ports.

[0013] Furthermore, the switching circuit also includes a power control circuit for implementing charge and discharge control; The power control circuit includes a tenth control chip and a twelfth control chip electrically connected to the tenth control chip. The sixteenth pin of the tenth control chip is connected to one end of the one hundred and sixteenth resistor; the other end of the one hundred and sixteenth resistor is electrically connected to one end of the one hundred and thirty-ninth resistor, one end of the one hundred and forty-second resistor, one end of the ninety-ninth capacitor, and the seventh pin of the twelfth control chip.

[0014] Furthermore, the switching circuit also includes a display control circuit for controlling the screen display; The display control circuit includes a fifth control chip; the thirty-sixth pin of the fifth control chip is electrically connected to the LCD display control circuit.

[0015] Furthermore, the switching circuit also includes a first control circuit and a second control circuit for controlling the current output, respectively. The first control circuit is provided with a fourth control chip for a first DC-DC step-up / step-down converter, and a first control chip electrically connected to the fourth control chip; The second control circuit includes an eleventh control chip for controlling the second DC-DC step-up / step-down voltage.

[0016] Furthermore, the number of Type-C ports is three, the number of independent protocol libraries integrated inside the protocol chip is two, and the switching circuit enables fast charging power supply when any two of the three Type-C ports are connected to external devices at the same time through the combination and allocation of signal paths.

[0017] This invention utilizes a protocol chip within a system, which integrates at least two independent protocol libraries and provides at least three configuration channel signal pins; and at least three Type-C ports for connecting external devices; a switching circuit whose signal input is connected to the at least three configuration channel signal pins of the protocol chip, and whose signal output is connected to the configuration channel pins of the at least three Type-C ports; wherein the switching circuit is configured to dynamically establish connection paths between the configuration channel signal pins of the protocol chip and the configuration channel pins of the Type-C ports in response to state changes of the at least three Type-C ports, so that when at least two Type-C ports are simultaneously connected to external devices, different independent protocol libraries in the protocol chip can be allocated to the at least two Type-C ports simultaneously connected to external devices; that is, through innovative switching circuitry and control logic, using a single multi-protocol library PD chip, multiple Type-C ports can be intelligently allocated independent protocol libraries when inserted in any combination, thereby ensuring simultaneous fast charging of multiple devices.

[0018] In other words, this invention, through innovative hardware switching circuitry and intelligent control logic, can achieve dynamic allocation of protocol library resources among multiple Type-C ports using only a single multi-protocol library PD chip. This fundamentally solves the industry problem of fast charging being impossible due to protocol library conflicts when multiple ports are used simultaneously. While ensuring that fast charging can be achieved when any two ports are plugged in at the same time, it significantly reduces system costs and complexity, greatly improving user experience and product competitiveness. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of an artificial intelligence-based wireless charging control system architecture for mobile phones according to the present invention. Figure 2 This is a schematic diagram of the first control circuit (first DC-DC buck-boost control output circuit) of a mobile phone wireless charging control system based on artificial intelligence according to the present invention. Figure 3 This is a schematic diagram of the second control circuit (second DC-DC buck-boost control output circuit) of a mobile phone wireless charging control system based on artificial intelligence according to the present invention. Figure 4This is a schematic diagram of the power supply control circuit of a mobile phone wireless charging control system based on artificial intelligence according to the present invention. Figure 5 This is a schematic diagram of the display screen image storage control circuit of a mobile phone wireless charging control system based on artificial intelligence according to the present invention. Figure 6 This is a schematic diagram of the display control circuit of a mobile phone wireless charging control system based on artificial intelligence according to the present invention. Figure 7 This is a schematic diagram of the switching control circuit of a mobile phone wireless charging control system based on artificial intelligence according to the present invention. Figure 8 This is a schematic diagram of the power control circuit of a mobile phone wireless charging control system based on artificial intelligence according to the present invention. Figure 9 This is a schematic diagram of the LCD display control circuit of a mobile phone wireless charging control system based on artificial intelligence according to the present invention. Figure 10 This is a schematic diagram of the process steps of a wireless charging control method for mobile phones based on artificial intelligence according to the present invention. In the diagram: 100 - Multi-Type-C port power supply system; 110 - PD protocol chip; 120 - Intelligent switching circuit; 130 - Type-C port; 140 - Control logic unit; U1 - First control chip; U3 - Third control chip; U4 - Fourth control chip; U5 - Fifth control chip; U6 - Sixth control chip; U7 - Seventh control chip; U8 - Eighth control chip; U10 - Tenth control chip; U11 - Eleventh control chip; U12 - Twelfth control chip; R116 - 116th resistor; R1139 - 139th resistor; R142 - 142nd resistor; C99 - 99th capacitor. Detailed Implementation

[0021] To facilitate a clearer understanding of the objectives, technical solutions, and advantages of this invention, the invention will be further described below in conjunction with the accompanying drawings and specific embodiments. Those skilled in the art can easily understand other advantages and effects of this invention from the content disclosed in this specification.

[0022] This invention can also be implemented or applied through other different specific examples, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the spirit of this invention.

[0023] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0024] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Secondly, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] like Figures 1-9 As shown, the present invention provides a multi-Type-C port intelligent switching control system based on protocol library reuse. The system includes a protocol chip, which integrates at least two independent protocol libraries and provides at least three configuration channel signal pins accordingly. The protocol chip includes at least three Type-C ports for connecting external devices; a switching circuit whose signal input is connected to at least three configuration channel signal pins of the protocol chip, and whose signal output is connected to the configuration channel pins of the at least three Type-C ports; wherein the switching circuit is configured to dynamically establish a connection path between the configuration channel signal pins of the protocol chip and the configuration channel pins of the Type-C ports in response to state changes of the at least three Type-C ports, so that when at least two Type-C ports are connected to external devices simultaneously, different independent protocol libraries in the protocol chip can be allocated to the at least two Type-C ports connected to external devices simultaneously, thereby realizing multi-port simultaneous fast charging.

[0027] The protocol chip provides at least three configuration channel signal pins, including one exclusive configuration channel pin corresponding to the first independent protocol library and two shared configuration channel pins corresponding to the second independent protocol library.

[0028] The switching circuit includes at least one single-pole double-throw analog switch; the moving end of the single-pole double-throw analog switch is connected to the exclusive configuration channel pin of the protocol chip, and its first stationary end and second stationary end are respectively connected to the configuration channel pins of the first target Type-C port and the second target Type-C port.

[0029] The model number of the analog switch is SGM3157YC6; The fifth pin of the analog switch is connected to one end of a resistor and one end of a capacitor, respectively; the other end of the resistor is connected to the power supply terminal; and the other end of the capacitor is connected to the ground terminal.

[0030] The switching circuit also includes a control logic unit for monitoring the status of the Type-C ports connected to the two shared configuration channel pins corresponding to the second independent protocol library, and generating a control signal to the selection terminal of the single-pole double-throw analog switch based on the monitoring results.

[0031] The control logic unit is configured as follows: When it is detected that only one of the Type-C ports connected to the two shared configuration channel pins is in a connected state, the single-pole double-throw analog switch is controlled to connect the exclusive configuration channel pin to the stationary terminal corresponding to the non-connected Type-C port; when it is detected that the Type-C ports connected to the two shared configuration channel pins are in a connected state at the same time, the single-pole double-throw analog switch is controlled to switch the exclusive configuration channel pin to the stationary terminal corresponding to one of the pre-specified Type-C ports.

[0032] The switching circuit also includes a power control circuit for implementing charge and discharge control; The power control circuit includes a tenth control chip and a twelfth control chip electrically connected to the tenth control chip. The sixteenth pin of the tenth control chip is connected to one end of the one hundred and sixteenth resistor; the other end of the one hundred and sixteenth resistor is electrically connected to one end of the one hundred and thirty-ninth resistor, one end of the one hundred and forty-second resistor, one end of the ninety-ninth capacitor, and the seventh pin of the twelfth control chip.

[0033] The switching circuit also includes a display control circuit for controlling the screen display; The display control circuit includes a fifth control chip; the thirty-sixth pin of the fifth control chip is electrically connected to the LCD display control circuit.

[0034] The switching circuit also includes a first control circuit and a second control circuit for controlling the current output, respectively. The first control circuit is provided with a fourth control chip for a first DC-DC step-up / step-down converter, and a first control chip electrically connected to the fourth control chip; The second control circuit includes an eleventh control chip for controlling the second DC-DC step-up / step-down voltage.

[0035] The number of Type-C ports is three, the number of independent protocol libraries integrated inside the protocol chip is two, and the switching circuit enables fast charging power supply when any two of the three Type-C ports are connected to external devices at the same time through the combination and allocation of signal paths.

[0036] Specifically, in this embodiment of the invention, a multi-Type-C port power supply system 100 is provided. The system includes a PD protocol chip 110, three Type-C ports (Port_1, Port_2, Port_3) 130, and an intelligent switching circuit 120.

[0037] The PD protocol chip 110 has two built-in independent PD protocol libraries (Protocol BankA and Protocol BankB). Chip 110 provides three CC signal pins: CC_A, CC_B, and CC_C. CC_A exclusively uses Protocol BankA, while CC_B and CC_C share Protocol BankB. In the initial state (no device inserted or only one port has a device inserted), the switching circuit 120 maintains the default connection: CC_A is connected to the CC pin of Port_1, CC_B is connected to the CC pin of Port_2, and CC_C is connected to the CC pin of Port_3.

[0038] The core of the switching circuit 120 is a single-pole double-throw (SPDT) analog switch U7 or U8, such as SGM3157. Figure 7 As shown, the moving terminal (COM) of analog switch U7 or U8 is connected to the exclusive CC pin CC_A of protocol chip 110. Its two stationary terminals (NO and NC) are connected to the CC pins of Port_2 and Port_3, respectively. Control logic unit 140 (which can be simple GPIO logic, a pin of a microcontroller, or a dedicated detection chip) is responsible for monitoring the connection status of Port_2 and Port_3 (e.g., by detecting the voltage or pull-up / pull-down status on the CC_B and CC_C pins). The output signal EN of control logic unit 140 is connected to the select terminal (SEL) of analog switch U7 or U8.

[0039] The working process is as follows: Scenario 1: Only Port_2 or only Port_3 is plugged in. The control logic unit 140 detects that there is only a valid connection on CC_B or CC_C. At this time, the control signal EN is set to low level (for example), and the analog switch U7 or U8 connects CC_A to Port_3 (default path). At this time, the port of the plugged device uses its default connection protocol library (Port_2 uses BankB, Port_3 uses BankA), and can fast charge normally. The CC line of the other idle port is switched to the exclusive CC_A to prepare for subsequent insertion.

[0040] Scenario 2: Devices are plugged into Port_2 and Port_3 simultaneously. This is a critical scenario requiring intelligent switching. The control logic unit 140 detects that there are valid connections on both CC_B and CC_C. Since CC_B and CC_C share the same protocol library BankB, direct connection would cause a conflict and prevent fast charging. At this time, the control logic unit 140 immediately sets the control signal EN to a high level. The analog switch U7 or U8 activates, switching CC_A from connection to Port_3 to connection to Port_2. At this point, the CC connection of Port_2 is switched from the shared CC_B to the exclusive CC_A, i.e., using Protocol BankA; while the CC connection of Port_3 remains unchanged, still using the shared CC_C and Protocol BankB. Thus, Port_2 and Port_3 use the two independent protocol libraries, BankA and BankB respectively, thereby enabling simultaneous fast charging of both devices.

[0041] Scenario 3: Port_1 is inserted simultaneously with any other port. Since Port_1 always exclusively uses CC_A (BankA), when Port_1 is inserted simultaneously with Port_2 or Port_3, they naturally use different protocol libraries (BankA and BankB), and simultaneous fast charging can be achieved without switching.

[0042] Based on the above logic, this solution enables the system to achieve PD fast charging functionality when any two of the three ports are plugged in simultaneously.

[0043] Preferably, such as Figure 2 In the circuit shown, the fourth control chip is the first-channel DC-DC buck-boost control chip, controlling one output; the first control chip is the A-port control buck chip, controlling the A-port output; as shown Figure 3 In the circuit shown, the eleventh control chip is the second-channel DC-DC buck-boost control chip, controlling the second-channel output; as shown... Figure 4 In the circuit shown, the power supply control circuit is a chip power supply system that supplies power to the chip by stepping down the voltage; as... Figure 5In the circuit shown, the third control chip is a display screen image storage chip; as Figure 6 In the circuit shown, the display control circuit is used for MCU control of screen display and other functions; for example Figure 7 In the circuit shown, the switching control circuit is a protocol IC that controls the output logic and implements multi-path bridge switching and CC signal switching. The seventh and eighth control chips are CC signal switching control chips. Furthermore, the sixth control chip U6 is a PD protocol IC with two independent PD protocol libraries and three CC signals. CC1_C and CC1_B share one protocol library; when both CC1_C and CC1_B are connected simultaneously, there is no PD fast charging protocol. CC1_A has its own independent protocol library. Therefore, intelligent PD CC signal switching is needed to switch one of the CC1_B signals to CC1_A for use. Figure 8 In the circuit shown, the power control circuit is a lithium battery management system (BMS) used for charging and discharging safety management and control, wherein the twelfth control chip is a power control chip; as shown Figure 9 In the circuit shown, the LCD display control circuit is used to control the display of the LCD screen.

[0044] In a specific embodiment of the present invention, the switching principle of the intelligent switching analog switch is as follows: When the signal EN_SGM3157 is low, CC1_A is connected to output port CC-Type1, and CC1_B is connected to output port CC-Type2. When JP4C and JP3C ports are inserted simultaneously, theoretically, there is no protocol because CC1_C and CC1_B share a common protocol library. Therefore, the CC1_A signal of JP3C port needs to be switched to the CC-Type2 JP3C port. When the signal EN_SGM3157 is high, CC1_A is connected to output port CC-Type2, and CC1_B is connected to output port CC-Type1, thus achieving intelligent switching. PD fast charging protocol can be implemented when JP4C and JP3C ports are inserted simultaneously.

[0045] To achieve the objective of this invention, such as Figure 10 As shown, the present invention provides another embodiment of a configuration channel signal switching method corresponding to the above system, the method specifically including the following steps: S10: System power-on initialization, establishing the default connection path for the CC signal.

[0046] S20: The control logic unit continuously monitors the connection status of each Type-C port, especially port groups that share the same protocol library (such as Port_2 and Port_3).

[0047] S30: Determine the connection status combination of the port groups (Port_2 and Port_3) in the shared protocol library.

[0048] S41: If no device is connected in the port group or only one device is connected, maintain the current CC signal connection status, or pre-connect the exclusive CC signal to an idle port.

[0049] S42: If two ports in the port group are connected to devices at the same time, a switching action is triggered, controlling the analog switch to switch the exclusive CC signal (CC_A) to a designated port (e.g., Port_2) in the port group so that it can use an independent protocol library.

[0050] S50: The system is based on a new CC connection path, negotiates power with connected devices through a PD protocol chip, and provides fast charging for the devices.

[0051] This invention utilizes a protocol chip within a system, which integrates at least two independent protocol libraries and provides at least three configuration channel signal pins; and at least three Type-C ports for connecting external devices; a switching circuit whose signal input is connected to the at least three configuration channel signal pins of the protocol chip, and whose signal output is connected to the configuration channel pins of the at least three Type-C ports; wherein the switching circuit is configured to dynamically establish connection paths between the configuration channel signal pins of the protocol chip and the configuration channel pins of the Type-C ports in response to state changes of the at least three Type-C ports, so that when at least two Type-C ports are simultaneously connected to external devices, different independent protocol libraries in the protocol chip can be allocated to the at least two Type-C ports simultaneously connected to external devices; that is, through innovative switching circuitry and control logic, using a single multi-protocol library PD chip, multiple Type-C ports can be intelligently allocated independent protocol libraries when inserted in any combination, thereby ensuring simultaneous fast charging of multiple devices.

[0052] In other words, this invention, through innovative hardware switching circuitry and intelligent control logic, can achieve dynamic allocation of protocol library resources among multiple Type-C ports using only a single multi-protocol library PD chip. This fundamentally solves the industry problem of fast charging being impossible due to protocol library conflicts when multiple ports are used simultaneously. While ensuring that fast charging can be achieved when any two ports are plugged in at the same time, it significantly reduces system costs and complexity, greatly improving user experience and product competitiveness.

[0053] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A multi-Type-C port intelligent switching control system based on protocol library reuse, characterized in that, The system includes a protocol chip, which integrates at least two independent protocol libraries and provides at least three configuration channel signal pins accordingly. And at least three Type-C ports for connecting external devices; A switching circuit has its signal input terminal connected to at least three configuration channel signal pins of the protocol chip, and its signal output terminal connected to the configuration channel pins of the at least three Type-C ports; wherein the switching circuit is configured to dynamically establish a connection path between the configuration channel signal pins of the protocol chip and the configuration channel pins of the Type-C ports in response to state changes of the at least three Type-C ports, so that when at least two Type-C ports are simultaneously connected to external devices, different independent protocol libraries in the protocol chip can be allocated to the at least two Type-C ports simultaneously connected to external devices.

2. The intelligent switching control system for multiple Type-C ports based on protocol library reuse according to claim 1, characterized in that, The protocol chip provides at least three configuration channel signal pins, including one exclusive configuration channel pin corresponding to the first independent protocol library and two shared configuration channel pins corresponding to the second independent protocol library.

3. The intelligent switching control system for multiple Type-C ports based on protocol library reuse according to claim 1 or 2, characterized in that, The switching circuit includes at least one single-pole double-throw analog switch; The moving end of the single-pole double-throw analog switch is connected to the exclusive configuration channel pin of the protocol chip, and its first stationary end and second stationary end are respectively connected to the configuration channel pins of the first target Type-C port and the second target Type-C port.

4. The intelligent switching control system for multiple Type-C ports based on protocol library reuse according to claim 3, characterized in that, The model number of the analog switch is SGM3157YC6; The fifth pin of the analog switch is connected to one end of a resistor and one end of a capacitor, respectively; the other end of the resistor is connected to the power supply terminal; and the other end of the capacitor is connected to the ground terminal.

5. The intelligent switching control system for multiple Type-C ports based on protocol library reuse according to claim 3, characterized in that, The switching circuit also includes a control logic unit for monitoring the status of the Type-C ports connected to the two shared configuration channel pins corresponding to the second independent protocol library, and generating a control signal to the selection terminal of the single-pole double-throw analog switch based on the monitoring results.

6. The intelligent switching control system for multiple Type-C ports based on protocol library reuse according to claim 5, characterized in that, The control logic unit is configured as follows: When it is detected that only one of the Type-C ports connected to the two shared configuration channel pins is in a connected state, the single-pole double-throw analog switch is controlled to connect the exclusive configuration channel pin to the stationary terminal corresponding to the non-connected Type-C port; when it is detected that the Type-C ports connected to the two shared configuration channel pins are in a connected state at the same time, the single-pole double-throw analog switch is controlled to switch the exclusive configuration channel pin to the stationary terminal corresponding to one of the pre-specified Type-C ports.

7. The intelligent switching control system for multiple Type-C ports based on protocol library reuse according to claim 3, characterized in that, The switching circuit also includes a power control circuit for implementing charge and discharge control; The power control circuit includes a tenth control chip and a twelfth control chip electrically connected to the tenth control chip. The sixteenth pin of the tenth control chip is connected to one end of the one hundred and sixteenth resistor; the other end of the one hundred and sixteenth resistor is electrically connected to one end of the one hundred and thirty-ninth resistor, one end of the one hundred and forty-second resistor, one end of the ninety-ninth capacitor, and the seventh pin of the twelfth control chip.

8. The intelligent switching control system for multiple Type-C ports based on protocol library reuse according to claim 3, characterized in that, The switching circuit also includes a display control circuit for controlling the screen display; The display control circuit includes a fifth control chip; the thirty-sixth pin of the fifth control chip is electrically connected to the LCD display control circuit.

9. The intelligent switching control system for multiple Type-C ports based on protocol library reuse according to claim 3, characterized in that, The switching circuit also includes a first control circuit and a second control circuit for controlling the current output, respectively. The first control circuit is provided with a fourth control chip for a first DC-DC step-up / step-down converter, and a first control chip electrically connected to the fourth control chip; The second control circuit includes an eleventh control chip for controlling the second DC-DC step-up / step-down voltage.

10. The intelligent switching control system for multiple Type-C ports based on protocol library reuse according to claim 1, characterized in that, The number of Type-C ports is three, the number of independent protocol libraries integrated inside the protocol chip is two, and the switching circuit enables fast charging power supply when any two of the three Type-C ports are connected to external devices at the same time through the combination and allocation of signal paths.

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