One-dragging-three output PD wire control method with display

Abstract

The invention relates to the technical field of power management and charging, and discloses a one-driving-three output and display PD wire control method, which comprises the following steps: S1, a main transmission cable is connected with a branching hub through a standard interface, the main transmission cable is used for receiving power input from a PD power adapter or power equipment supporting a USBPD protocol, and the main transmission cable is connected with the branching hub through the standard interface; the branching hub distributes the power supply of the main transmission cable to the three branch cables and is used for providing charging power for different electronic devices. And S2, protocol identification and power demand evaluation, which is used for carrying out charging protocol identification on the electronic equipment connected to the three branch cables through a support vector machine or a neural network classification algorithm, and determining the charging protocol of each piece of equipment. Through an intelligent power distribution algorithm, real-time charging state monitoring and multiple safety protection mechanisms, efficient and safe synchronous charging of multiple devices is realized, the charging efficiency is optimized, and the safety and user experience in the charging process are improved.

Description

Technical Field

[0001] The present invention relates to the field of power management and charging technology, and in particular to a one-to-three output PD cable control method with display. Background Art

[0002] With the popularity of electronic devices, people are increasingly relying on charging devices such as smartphones, tablets, and headphones in their daily lives. However, many home and office environments have heavy charging demands, a limited number of sockets, and each device usually requires a separate charger and charging cable. Especially when multiple devices are charged at the same time, traditional charging methods are often not efficient and convenient enough. In addition, the power requirements of different devices vary greatly. How to ensure that each device can obtain the required charging power while avoiding failures such as overheating and overvoltage is an important issue that needs to be solved.

[0003] At present, there are some charging devices in the prior art that can support charging multiple devices at the same time. For example, some multi-port chargers can provide charging services for multiple devices and can provide basic overcharge protection and power distribution. These charging devices usually perform simple power distribution for charging multiple devices to ensure that each device has enough power to charge. At the same time, some advanced chargers also have functions such as battery protection and overcurrent protection to ensure the electrical safety of the device during charging.

[0004] Although the existing technology provides charging solutions for multiple devices and has some basic safety protection functions, there are still some shortcomings. First, the existing charging equipment usually adopts a static or equal power distribution method, and cannot intelligently adjust the power according to the actual needs of the device, which makes it easy for some devices to be incompletely charged due to insufficient or excessive power during the charging process. In addition, the safety protection mechanism in the existing technology is usually preset and cannot monitor the changes in parameters such as voltage and current in real time, resulting in the inability to respond in time in abnormal situations such as overheating, overvoltage or short circuit, increasing the risk of equipment damage or safety accidents. Finally, the traditional charging solution also lacks comprehensive monitoring of the charging status, and users cannot obtain detailed charging information in real time. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a one-to-three output PD cable control method with display, which solves the problems of uneven charging power distribution, insufficient safety protection and lack of charging status monitoring in the prior art.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A one-to-three output PD cable control method with display, comprising the following steps: S1. The main transmission cable is connected to the branching hub through a standard interface. The main transmission cable is used to receive power input from a PD power adapter or a power device that supports the USB PD protocol. The branching hub distributes the power of the main transmission cable to three branch cables for providing charging power for different electronic devices. S2, protocol identification and power demand assessment, used to identify the charging protocols of the electronic devices connected to the three branch cables through a support vector machine or a neural network classification algorithm, determine the charging protocol of each device, and assess the power demand of each device; S3, intelligent power distribution calculation and optimization, is used to optimize the output power distribution of the three branch cables through a dynamic programming algorithm. The power distribution algorithm is dynamically optimized based on the charging protocol and power requirements of the device, the main power input power, and the charging priority between devices to ensure that each device gets the power it needs; S4, display charging status, used to display the voltage, current, power and charging progress of each device in real time, and present the charging status of each device to the user through the display interface, providing the real-time charging status of the device; S5, safety protection and fault detection, used to monitor voltage, current and temperature parameters, detect abnormal conditions in the charging process, and cut off the current output of the corresponding branch cable when an abnormality occurs, and at the same time feedback the abnormal information to the user through a warning mechanism; S6. When multiple devices are charged synchronously, if there are no abnormalities in the charging process of the branch cables, the intelligent power allocation calculation and optimization dynamic programming algorithm is started to optimize the charging power allocation of each device in real time to ensure that multiple devices are charged synchronously under the same power supply. During the charging process, the voltage and current are dynamically adjusted according to the changes in the power demand of the device.

[0007] Preferably, the protocol identification and power demand assessment steps include: Identify the charging protocol of each connected device and determine the type of charging protocol supported by the device; Determine the charging power requirement of the device based on the protocol type of the device; Based on the device charging protocol, the power requirement of each device is calculated and compared with the input power of the main transmission cable to determine the priority of power allocation.

[0008] Preferably, the branch hub includes: An integrated power distribution unit that distributes the power input from the main transmission cable to ensure that the three branch cables receive the appropriate voltage and current according to the power requirements of their respective equipment; A protocol identification unit that communicates with the main power adapter and branch cables to automatically identify the charging protocol compatible with each device and ensure that power distribution meets the charging needs of each device.

[0009] Preferably, the power allocation calculation and optimization step includes: Based on the charging protocol and power demand, input power and priority between devices, a dynamic programming algorithm is used to optimize power allocation in real time. The output power of each branch cable is determined by a linear programming algorithm to ensure that the power allocation of each device is within the maximum power range of the device; Dynamically adjust voltage and current distribution to ensure efficient use of power during charging and safe charging of each device.

[0010] Preferably, the power allocation algorithm is performed by the following steps: Dynamically adjust charging power distribution, based on the charging protocol requirements of each device and the current power demand, to optimize the output power of each branch cable; When multiple devices are charging at the same time, the current and voltage are automatically adjusted according to the charging priority, and more power is allocated to devices with high power requirements to ensure the efficiency of the charging process; When the power input power is limited, the power ratio of each device is calculated based on the power allocation algorithm to maximize the power utilization efficiency among devices.

[0011] Preferably, the step of displaying the charging status includes: Display the voltage, current, and power of each device in real time, and calculate the charging progress; The charging status of the device is displayed through the display interface, including whether the charging is complete, the current voltage and current information, ensuring that the user can check the charging status of the device at any time; The charging progress bar is updated according to the actual charging progress of each device, reflecting the remaining charging time in real time.

[0012] Preferably, the safety protection and fault detection steps include: Real-time monitoring of voltage, current and temperature. When overvoltage, overcurrent and overheating occur, the system will automatically cut off the current output of the abnormal device. The fault detection module monitors the working status of each branch cable and automatically triggers safety protection measures when a fault occurs; When a fault is detected, real-time feedback is given to the user through a warning mechanism to ensure the safety of the charging process.

[0013] Preferably, the fault detection step comprises: When current overload occurs, the power supply of the corresponding branch cable is cut off and abnormal information is fed back through the warning mechanism; When the voltage is too high or the current is too low, the output power is automatically reduced to ensure that the equipment will not be damaged due to power overload; When the device temperature is too high, the system automatically reduces power output or cuts off the charging power supply to avoid overheating.

[0014] Preferably, the multi-device synchronous charging step includes: Dynamically adjust voltage and current distribution through optimization algorithms to ensure that there is no voltage or current mismatch when different devices are charged simultaneously; By real-time monitoring of changes in device power requirements, charging strategies can be dynamically adjusted to ensure charging efficiency of multiple devices under the same power supply.

[0015] The present invention provides a PD cable control method with one-to-three outputs and display, which has the following beneficial effects: 1. The present invention uses a dynamic power allocation mechanism to monitor the charging needs of each device in real time and intelligently adjust the power allocation. This ensures that multiple devices always receive appropriate power support during the charging process. Compared with traditional charging solutions, the present invention solves the problem of uneven power when charging multiple devices and avoids overload or insufficient power.

[0016] 2. The priority management function of the present invention can flexibly allocate power according to the importance and charging status of the device. High-priority devices can obtain charging resources first, which not only avoids insufficient charging of key devices, but also improves charging efficiency. Compared with the existing technology, this priority mechanism can ensure more efficient and reasonable power allocation.

[0017] 3. The present invention uses multiple safety protection systems to ensure that any abnormality (such as overvoltage, overcurrent, overheating or short circuit) during the charging process can be responded to in a timely manner to protect the device from damage. Compared with the imperfect safety protection of traditional charging solutions, the present invention provides more comprehensive and reliable protection during the charging process, effectively preventing safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The figure is a flow chart of the method of the present invention. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Please refer to the attached Figure 1The embodiment of the present invention provides a one-to-three output PD cable control method with display, comprising the following steps: S1. The main transmission cable is connected to the branching hub through a standard interface. The main transmission cable is used to receive power input from a PD power adapter or a power device that supports the USB PD protocol. The branching hub distributes the power of the main transmission cable to three branch cables for providing charging power for different electronic devices. The function of the main transmission cable is to receive power from a power supply device (such as a PD power adapter or a power supply device that supports the USB PD protocol) and connect it to the branch hub through a standard interface (such as USB-C). This process transmits the input power (input power) to the branch hub through a standard USB interface, and then the branch hub intelligently distributes the power to the three branch cables, thereby providing the required power for the connected electronic devices.

[0021] During the operation of the main transmission cable, power is first received from the power adapter through a standard interface. The input power is calculated based on the output voltage and current of the power supply device.

[0022] Specifically, the power received by the main transmission cable from the power supply device is calculated by the formula: ; in: is the total power received by the main transmission cable; is the input voltage for the main transmission cable; Input current of the main transmission cable.

[0023] This formula is used to calculate the total power received by the main transmission cable from the power supply equipment. The calculated input power It will become the basis for subsequent power distribution and affect how the branch hub distributes power to the three branch cables. The output power of the power supply equipment is closely related to the maximum power carried by the main transmission cable, which determines the power transmission capacity of the entire charging system.

[0024] In this embodiment, the main transmission cable is connected to the branching hub through a standard interface. The power will be distributed to three branch cables through the distribution hub. The design goal of the distribution hub is to intelligently distribute the input power to various devices, ensuring that each device can receive power that meets its power requirements when charging.

[0025] Calculation logic for distributing power: The work of the distribution hub is based on the input power The power distribution is performed based on the power requirements of each device (determined by the subsequent protocol identification and power evaluation modules). Specifically, the branch hub needs to be dynamically adjusted based on the protocol identification results and power requirements of each device, and the power allocated to each branch cable cannot exceed the maximum charging power of the device.

[0026] Assuming the input power of the main transmission cable is is 145W, and the power requirements of each device are Device 1 ( )、Device 2( ) and device 3 ( The branching hub distributes the power to each branch cable by calculation: ; At this time, the total output power is: ; Of which: Total output power + + The sum is equal to the input power ; is the power requirement of device 1; is the power requirement of device 2; is the power requirement of device 3.

[0027] This calculation ensures that all devices receive the appropriate amount of power within the power range provided by the mains supply.

[0028] The protocol identification module in the distribution hub works closely with the power distribution module to complete the power distribution of the entire charging system. In this embodiment, the protocol identification module is responsible for identifying the charging protocol type of each device and evaluating the power requirements of the device. Specifically, the protocol identification module determines the maximum charging power of the device based on the charging protocol supported by the device (such as USBPD, QC, etc.).

[0029] Once the charging protocol of each device is identified, the power distribution module of the distribution hub can calculate the power distribution according to the power demand of the device and the total input power provided by the main transmission cable. This process is dynamic and is adjusted in real time according to the changes in power demand and power input power between devices.

[0030] In some embodiments, different connection interface forms can be used between the main transmission cable and the branch hub to meet the requirements of different power supply devices. For example, in addition to the USB-C interface, a USB-A interface or other standard interfaces can also be used. Regardless of the interface form, the core goal is to ensure that power can be efficiently transmitted from the power supply device to multiple devices.

[0031] In addition, when multiple devices are charging, the hub can also dynamically adjust power allocation according to changes in the power requirements of the devices. That is, when multiple devices are charging at the same time, if a device is fully charged, the hub will immediately allocate more power to other devices to ensure maximum charging efficiency.

[0032] Through step S1, the main transmission cable can stably receive the power input of the power supply device and reasonably distribute the power to multiple devices through the branching hub. The stability of power transmission and the accuracy of power distribution ensure that multiple devices can be charged efficiently and safely at the same time.

[0033] S2, protocol identification and power demand assessment, used to identify the charging protocols of the electronic devices connected to the three branch cables through a support vector machine or a neural network classification algorithm, determine the charging protocol of each device, and assess the power demand of each device; Step S2 is responsible for identifying the charging protocol of each device connected to the distribution hub and evaluating the power requirements of each device. This step is the basis for the power allocation of the entire system, because the protocol and power requirements of the device will directly affect the subsequent power allocation strategy. Through protocol identification and power evaluation, the system can ensure that each device is provided with charging power that meets its charging standards.

[0034] The goal of this step is to accurately identify the charging protocol of each connected device (such as USB PD, QC, AFC, FCP, etc.) and the power requirements calculated according to the protocol. This information will serve as the basis for subsequent power allocation and voltage and current adjustment to ensure that each device can obtain appropriate power supply, which not only ensures charging efficiency but also ensures the safety of the device.

[0035] In this embodiment, the protocol identification module uses a support vector machine (SVM) or a neural network classification algorithm to identify the charging protocol of each device and accurately determine the charging protocol supported by each device. For the power requirement of each device, the system calculates it through its charging protocol and actual charging conditions (such as voltage, current, etc.), thereby obtaining the power requirement of each device.

[0036] Generally, after each device is connected to the distribution hub through a standard interface, the protocol identification module will first identify the charging protocol supported by the device through signal exchange. The protocol type supported by each device is usually provided by the device manufacturer or dynamically negotiated during communication, such as USBPD protocol, QC protocol, AFC protocol, FCP protocol, etc.

[0037] Specifically, the protocol identification module uses machine learning algorithms (such as support vector machines or neural networks) to classify and identify device protocols. These algorithms can process the signals transmitted by different devices and accurately identify the charging protocols supported by each device. After the identification is completed, the system will provide a basis for subsequent power demand assessment based on the characteristics of the charging protocol (such as the maximum supported voltage, current, and power, etc.).

[0038] As an option, the protocol identification module can further confirm the charging capability of the device through the communication protocol between devices. For example, under the USBPD protocol, the device may dynamically negotiate the voltage and current values, and the identification module will update the power requirement based on the negotiation results.

[0039] After protocol identification, the system evaluates the power requirements of each device. Each device has a maximum charging power limit based on its charging protocol, which determines the power required by the device. The system needs to calculate the power requirements of each device based on the protocol identification results, combined with the voltage and current requirements.

[0040] Specifically, for example, for a device that supports the USB PD protocol, its power requirements can be expressed by voltage ( ) and current ( ) to calculate the charging power requirement of each device. Usually the USBPD protocol supports multiple voltage levels (such as 5V, 9V, 15V, etc.), so the charging power requirement of the device can be calculated by the following formula: ; in: For equipment Charging power requirements; For equipment The charging voltage; For equipment of charging current.

[0041] For example, if the device Supporting the USBPD protocol, requiring 9V voltage and 2A current, the charging power requirement of the device is: ; In one possible implementation, the system can calculate the power requirements corresponding to multiple voltage and current combinations according to the device's protocol requirements, and select the best combination to meet the device's actual charging requirements. If the device supports variable voltage or variable current mode during charging, the system will dynamically adjust the power calculation according to the device's real-time needs.

[0042] Protocol identification is closely related to the calculation of power requirements. Specifically, the protocol identification module can clarify the charging protocol of the device, and combined with the voltage and current information supported by the device, the system uses this information in the power requirement assessment to calculate the power requirements of each device. For example, if the device supports the USBPD protocol and can be charged at 15V, the system will calculate the power requirements of the device based on the voltage and the corresponding current. This information will provide support for subsequent power allocation.

[0043] After the device power demand calculation is completed, the system compares the device power demand with the main power input power ( ) for comparison. As an option, if the main power input power is sufficient to meet the power requirements of all devices, the system will allocate power according to the needs of each device. If the input power is insufficient, the system will perform dynamic power allocation, giving priority to allocating more power to high-power devices to ensure safe and efficient charging.

[0044] Formula: Device power allocation priority ; in: Total device power demand, which represents the sum of the power demands of all devices; The input power to the main transmission cable represents the total power received from the power supply device; To assign to a device Output power; For equipment The charging power requirement.

[0045] In this formula, the main power input power The power is allocated proportionally according to the power demand of each device, ensuring that each device can obtain reasonable charging power when power is limited.

[0046] Through the protocol identification and power demand assessment in step S2, the system can accurately identify the charging protocol of each device and calculate the power demand of the device according to the protocol requirements. This process not only ensures that the device can obtain the most suitable power according to its charging protocol, but also effectively avoids damage to the device due to insufficient or excessive power.

[0047] S3, intelligent power distribution calculation and optimization, is used to optimize the output power distribution of the three branch cables through a dynamic programming algorithm. The power distribution algorithm is dynamically optimized based on the charging protocol and power requirements of the device, the main power input power, and the charging priority between devices to ensure that each device gets the power it needs; The goal of S3 is to optimize power distribution through intelligent algorithms to ensure that each device can get the charging power it needs while maximizing charging efficiency. This step uses dynamic programming (DP) and linear programming (LP) algorithms, which combine to ensure optimal power distribution. This step is to match the charging needs of all devices with the capabilities of the main power source in order to charge multiple devices efficiently and safely.

[0048] In this embodiment, intelligent power allocation is achieved through a combination of dynamic programming and linear programming. The dynamic programming algorithm is responsible for allocating power according to the device's protocol requirements, power requirements, and charging priority; the linear programming algorithm further optimizes power allocation to ensure that each device obtains the power required for charging while avoiding problems such as overcurrent and overvoltage.

[0049] This process will input power and the power requirements of the device Combined, calculate the output power that each device should obtain If the input power is insufficient to meet the maximum power requirements of all devices, the system recalculates power allocation by dynamically adjusting priorities and requirements.

[0050] In general, the system allocates power through a dynamic programming algorithm (DP) based on the input power and the power requirements of each device. Dynamic programming can be seen as a step-by-step problem-solving process, where the optimal solution is obtained through step-by-step calculations. It will be calculated based on its charging protocol (such as USB PD, QC, etc.) and charging status.

[0051] Specifically, when the power demand of all devices Once all are clear, the system will calculate the total power requirement : ; in, Represents the total power required by all devices; The power requirements for each device; is the number of devices, the total power received by the system It must be less than or equal to the total power. Otherwise, the system needs to dynamically adjust the power based on the device priority.

[0052] In one possible implementation, the dynamic programming algorithm calculates the output power of each device based on power demand and device priority through optimization steps. In order to deal with insufficient power, the system will reasonably allocate power according to power priority to ensure fairness and efficiency of the charging process.

[0053] As an option, a linear programming algorithm is used to further optimize the power distribution, ensuring that the power distribution of each device not only meets the charging protocol of the device, but also does not exceed its maximum power demand. Through linear programming, the system can optimize the power distribution to ensure that the power distribution between devices is balanced while avoiding power waste.

[0054] Allocate power using the device power allocation priority formula disclosed in S2; The purpose of this formula is to ensure that each device is fed with input power according to its power requirements. The system allocates power appropriately according to the power requirements of each device. and total power demand , optimizes the power distribution. This distribution ensures that the charging power obtained by each device does not exceed the maximum power it requires, thus ensuring the stability and safety of the charging process.

[0055] As an option, if the input power If the maximum power required by all devices is insufficient, the system will dynamically allocate power based on the charging priority of each device. At this time, the system will prioritize allocating more power to devices with higher charging requirements.

[0056] In step S3, the power allocation priority is dynamically calculated based on the device’s protocol, charging requirements, and other factors. Specifically, the system adjusts the priority coefficient of each device To determine the power allocation. For example, if the charging priority of device 1 is Higher than device 2 and device 3, the system will prioritize allocating more power to device 1.

[0057] In one possible implementation, the system uses the following formula to adjust the priority: ; in: To assign to a device The output power of the device Received charging power; The input power of the main power supply; For equipment The charging priority coefficient of the device The charging priority of the device with a higher priority coefficient will receive more power allocation; The sum of the charging priorities of all devices. This value is used to standardize power allocation to ensure that the power allocation of each device is reasonable.

[0058] This formula ensures that the system can reasonably allocate power according to the priority of the device, ensuring that high-priority devices receive more power support. This is very important in multi-device charging scenarios, which can maximize charging efficiency while preventing low-priority devices from failing to charge due to insufficient power.

[0059] Through intelligent power allocation calculation and optimization, it can ensure that multiple devices can be charged simultaneously within the constraints of one main power source. The system dynamically adjusts power allocation based on the protocol and power requirements of each device to maximize charging efficiency and ensure device safety. In the case of insufficient power, the system dynamically allocates power based on the priority and needs of the device to ensure that high-power devices get power first, avoiding the situation where the device cannot be fully charged.

[0060] S4, display charging status, used to display the voltage, current, power and charging progress of each device in real time, and present the charging status of each device to the user through the display interface, providing the real-time charging status of the device; The display module displays the charging status of each device in real time by cooperating with the power distribution module, protocol identification module and safety protection module in the system. Through information such as voltage, current, power and charging progress, users can clearly understand the charging progress and status of each device. The display module not only updates the charging information of each device in real time, but also allows users to more clearly understand the time when charging will be completed through a dynamic progress bar and an estimate of the remaining time.

[0061] In general, the charging status of each device is presented in real time through the display module, including the current charging voltage, current, power and charging progress bar. The display module can provide accurate real-time charging status through data interaction with the power distribution module, protocol identification module and safety protection module.

[0062] Specifically, the charging power of each device is based on the power calculated in the previous step S3 , it depends on the voltage of the device and current To calculate. The charging power formula is as follows: ; in: For equipment The charging power of the device The actual amount of power received during charging; For equipment The charging voltage; For equipment of charging current.

[0063] For example, suppose the device The charging voltage is 9V and the current is 2A, so the charging power of the device is: ; As an option, the display module can also dynamically present the charging progress of each device by displaying charging progress bars. These progress bars can show the percentage of each device currently charged and update the display information based on the charging status of the device battery. If the device is close to full, the system will display the remaining time and charging progress to help users determine when to unplug the charger.

[0064] Specifically, the system will update the display based on the real-time status of the power distribution module and the device. The charging power, voltage, and current of each device will be dynamically displayed on the user interface. If the system detects changes in parameters such as current and voltage, the display module will update this information instantly. In this way, users can see the current battery status of each device.

[0065] In one possible implementation, the display module will work in conjunction with the safety protection module. If the system detects an abnormal situation (such as overcurrent, overvoltage, overheating, etc.), the display module will alert the user through a warning message. These warning messages may include charging failure prompts, abnormal device prompts, or safety warnings, etc., to help users understand problems in the charging process in a timely manner.

[0066] As an option, the display module can also display the charging efficiency in real time by calculating the power of each device. The system dynamically updates the charging status of each device through real-time power calculation and displays the battery charging progress of the device according to the charging progress bar.

[0067] In one possible implementation, the system provides real-time remaining time calculation. Based on the current voltage, current, and power requirements, the system can estimate the remaining charging time for each device and display it to the user. For example, if the current charging power of device 1 is 18W, and the system estimates that the remaining power is 36W, the estimated remaining time is: ; Among them: Remaining power is the current remaining battery power of the device; Remaining time is the remaining time required to complete charging.

[0068] Through these calculations, the system can not only provide real-time charging status, but also help users evaluate the charging completion time and provide a more intelligent charging experience.

[0069] In some embodiments, the display module also exchanges data with the safety protection module. For example, when the system detects that the device voltage, current or temperature is too high, the display module will prompt the user to check through visual or sound to ensure the safety of the charging process. If a dangerous situation such as a short circuit or overcurrent occurs, the system will automatically cut off the charging and inform the user through the display interface.

[0070] As an option, the design of the display module can consider multiple display modes, such as OLED display, LCD display, etc. These displays can present the charging status with high resolution, so that the user can clearly view the charging status of each device.

[0071] In a possible implementation, the system's display interface can be designed to display multiple devices simultaneously, so that users can view the charging status of multiple devices. The charging status of each device can be displayed in a different area, so that users can intuitively understand which devices are fully charged and which devices are still charging.

[0072] By displaying the charging status in real time, the system can ensure that users can accurately and promptly understand the charging status of each device during the charging process. The system provides users with real-time feedback on charging by updating the voltage, current, power and charging progress in real time. It can provide timely warnings when abnormalities occur during the charging process, helping users avoid problems such as overcharging and overheating of the device.

[0073] S5, safety protection and fault detection, used to monitor voltage, current and temperature parameters, detect abnormal conditions in the charging process, and cut off the current output of the corresponding branch cable when an abnormality occurs, and at the same time feedback the abnormal information to the user through a warning mechanism; The core goal of S5 is to ensure that it can effectively detect and respond to faults such as overcurrent, overvoltage, overheating and short circuit during the charging process by implementing multiple safety protection measures, protect the device from damage, and ensure the safety of the charging process. It mainly includes four main safety protection modules: overvoltage protection, overcurrent protection, overheating protection and short circuit protection. Each protection module will monitor the electrical parameters (such as voltage, current, temperature, etc.) in real time during the charging process of the device. Once an abnormality is found, the current output will be cut off immediately, and a warning will be issued through the system to ensure the safety of the device and the user.

[0074] Through real-time data monitoring and analysis, the system can promptly identify potential faults and take necessary measures. The protection module in the system combines hardware monitoring and software control to ensure that each device can operate under safe working conditions during the charging process.

[0075] Generally, there is a maximum allowable voltage for a device when it is charging. If the charging voltage of the device exceeds this limit, it may cause damage to the device battery or other safety issues. The system monitors the voltage of the device in real time. and the maximum voltage supported by the device If the voltage of the device exceeds the set maximum voltage, the system will automatically stop the current output.

[0076] Specifically, when the device charging voltage Exceeds a preset voltage threshold , the system triggers overvoltage protection and disconnects the power supply from the device.

[0077] formula: ; in: For equipment The charging current indicates that the device The actual current received; For equipment The maximum allowable charging current indicates that the device The maximum current limit that can be tolerated.

[0078] The formula ensures that the device will not be damaged by excessive current by monitoring the current in real time. If the current is too large, the system will automatically adjust the current output to avoid current overload. Through overcurrent protection, the safety of the device battery and charging system can be guaranteed.

[0079] Generally, the device will have a certain temperature rise during the charging process, especially when the charging power is high, the temperature of the device and cable may rise. When the temperature of the device or charging cable exceeds the safe operating temperature, it may cause safety hazards such as device damage or fire. Therefore, the system monitors the temperature of the device and cable in real time through the temperature sensor.

[0080] Specifically, when the device temperature Exceeding the maximum safe temperature setting , the system will automatically reduce the charging power or cut off the charging current to prevent overheating.

[0081] formula: ; in: For equipment The operating temperature of the device Actual temperature during charging; For equipment The maximum safe temperature of the device The highest safe operating temperature that can be tolerated.

[0082] Through this formula, the system can automatically adjust the power when the device or cable is overheated, preventing device damage or safety accidents caused by overheating. The temperature monitoring and protection mechanism provides important safety guarantees for device charging.

[0083] As an option, the system also has a short-circuit protection module. When the current rises rapidly in a very short period of time, the system will determine that a short circuit has occurred and immediately cut off the current output to prevent the device and power adapter from being damaged by the short circuit. The short-circuit protection mechanism can respond quickly and disconnect the power supply in time to avoid damage to the device.

[0084] Specifically, when the system detects that the current rises rapidly to the short-circuit threshold, the system immediately cuts off the current output and issues a warning through the coordinated action of hardware and software.

[0085] Short-circuit protection ensures that immediate action can be taken when a short-circuit fault occurs to prevent the short-circuit from causing damage to the equipment and system. This protection mechanism improves the safety of the system.

[0086] Through overvoltage, overcurrent, overheating and short circuit protection modules, it is possible to effectively prevent equipment damage, fire and other safety hazards caused by electrical faults. Through these measures, the system can provide a stable and safe charging environment for the device, and maximize the safety of the device. Each protection mechanism can adjust the system behavior according to the real-time status of the device to ensure that the charging process will not affect the normal use of the device due to abnormalities.

[0087] S6. When multiple devices are charged synchronously, if the charging process of the branch cables is normal, the intelligent power allocation calculation and optimization dynamic programming algorithm is started to optimize the charging power of each device in real time to ensure that multiple devices are charged synchronously under the same power supply. During the charging process, the voltage and current are dynamically adjusted according to the changes in the power demand of the device. The core goal of S6 is to ensure that multiple devices can be charged synchronously under the same power supply, and dynamically adjust the voltage and current distribution according to the power demand changes of each device, so as to ensure that all devices can obtain efficient and reasonable power supply during the charging process. S6 monitors the power demand and power input power of the device in real time, and combines the power optimization algorithm to ensure that multiple devices can be charged synchronously under the same power supply. The system dynamically adjusts the power distribution according to the real-time charging demand of each device, and ensures that high-priority devices can get charging power first.

[0088] During this process, the system uses a dynamic power allocation algorithm to ensure efficient use of power during charging. At the same time, the system automatically adjusts the voltage and current distribution according to the charging status of each device to ensure stability and safety when charging multiple devices.

[0089] Generally, when multiple devices are connected to the same power source at the same time, their power requirements will change according to the charging status. For example, the batteries of some devices may charge faster, while other devices may charge slower. Therefore, the system needs to monitor the charging status of each device in real time and dynamically adjust the power allocation according to the charging progress and power requirements.

[0090] Specifically, the system continuously monitors the charging requirements of each device through the protocol identification module and the power demand assessment module. If the battery of a device is nearly full, the system will adjust the power demand of the device according to the charging protocol. For example, when device 1 is charged to 80%, its charging power demand may decrease, and the system will reduce its charging power and allocate the remaining power to devices 2 and 3 that charge slower.

[0091] This dynamic adjustment ensures that the charging process for each device is optimized, avoiding power waste and uneven charging.

[0092] The allocation is performed using the device power allocation priority formula disclosed in S2.

[0093] This formula is used to convert the total input power Reasonable allocation is made according to the power requirements of each device to ensure that the charging power can be allocated according to the actual needs of the device. The system dynamically adjusts the charging power of each device based on the proportion of the power requirements of each device to ensure that the device can be charged efficiently within the power range.

[0094] As an option, when the input power is insufficient, the system dynamically allocates power based on the priority and charging needs of the devices. The system will prioritize allocating more power to devices with higher charging needs, ensuring that they can charge faster. For devices with low power requirements, the system will allocate relatively less power to them.

[0095] Specifically, during the charging process, the system will Dynamically adjust power allocation. The charging priority of the device can be determined based on multiple factors, such as the device's remaining battery capacity, charging status, or the priority set by the user. The allocation is performed using the priority adjustment formula disclosed by S3.

[0096] This formula ensures that devices with higher priority can get more power support during the charging process. By dynamically adjusting power allocation, the system can ensure that all devices receive appropriate power supply during the charging process, thereby improving charging efficiency and device safety.

[0097] Specifically, during the multi-device charging process, the system calculates the charging progress and remaining charging time of each device in real time to provide users with clear charging information. The device charging progress can be estimated by calculating the battery charging status of each device, while the remaining time is calculated based on the charging power and battery capacity.

[0098] For example, when the charging power of device 1 is 18W and the remaining battery capacity of device 1 is 36Wh, the system can calculate the remaining charging time of device 1 by the following formula: in: For equipment The remaining charging time indicates the remaining time required for the device to complete charging; For equipment The remaining battery capacity indicates the remaining battery power of the device; For equipment The current charging power indicates the power used when the device is charging, which changes dynamically based on the charging protocol and battery charging status.

[0099] This formula helps the system estimate the remaining charging time of the device and provides real-time feedback to the user through the display screen. This provides users with accurate charging expectations and enhances controllability and transparency of the charging process.

[0100] With the multi-device simultaneous charging function, the system can intelligently distribute power when multiple devices share the same power source, and adjust the charging voltage and current according to real-time needs. Dynamic power allocation ensures that each device receives appropriate power supply during the charging process, avoiding the risk of insufficient or overloaded power supply.

[0101] In addition, the system can monitor the charging progress and remaining time of the device in real time, providing users with accurate charging information so that users can plan their charging time reasonably. Through priority management, the system can ensure that high-power devices have priority in obtaining sufficient power when charging, thereby improving overall charging efficiency.

[0102] The technical solution of this step not only improves the power utilization efficiency during the charging process, but also optimizes the stability and safety of device charging, ensuring that there will be no uneven power distribution or device damage when multiple devices are charged at the same time.

[0103] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A PD cable control method with one-to-three outputs and display, characterized in that: The following steps are involved: S1. The main transmission cable is connected to the branching hub through a standard interface. The main transmission cable is used to receive power input from a PD power adapter or a power device that supports the USB PD protocol. The branching hub distributes the power of the main transmission cable to three branch cables for providing charging power for different electronic devices. S2, protocol identification and power demand assessment, used to identify the charging protocols of the electronic devices connected to the three branch cables through a support vector machine or a neural network classification algorithm, determine the charging protocol of each device, and assess the power demand of each device; S3, intelligent power distribution calculation and optimization, is used to optimize the output power distribution of the three branch cables through a dynamic programming algorithm. The power distribution algorithm is dynamically optimized based on the charging protocol and power requirements of the device, the main power input power, and the charging priority between devices to ensure that each device gets the power it needs; S4, display charging status, used to display the voltage, current, power and charging progress of each device in real time, and present the charging status of each device to the user through the display interface, providing the real-time charging status of the device; S5, safety protection and fault detection, used to monitor voltage, current and temperature parameters, detect abnormal conditions in the charging process, and cut off the current output of the corresponding branch cable when an abnormality occurs, and at the same time feedback the abnormal information to the user through a warning mechanism; S6. When multiple devices are charged synchronously, if there are no abnormalities in the charging process of the branch cables, the intelligent power allocation calculation and optimization dynamic programming algorithm is started to optimize the charging power allocation of each device in real time to ensure that multiple devices are charged synchronously under the same power supply. During the charging process, the voltage and current are dynamically adjusted according to the changes in the power demand of the device.

2. A one-to-three output PD cable control method with display according to claim 1, characterized in that: The protocol identification and power requirement assessment steps include: Identify the charging protocol of each connected device and determine the type of charging protocol supported by the device; Determine the charging power requirement of the device based on the protocol type of the device; Based on the device charging protocol, the power requirement of each device is calculated and compared with the input power of the main transmission cable to determine the priority of power allocation.

3. A one-to-three output PD cable control method with display according to claim 1, characterized in that: The branch hub includes: An integrated power distribution unit that distributes the power input from the main transmission cable to ensure that the three branch cables receive the appropriate voltage and current according to the power requirements of their respective equipment; A protocol identification unit that communicates with the main power adapter and branch cables to automatically identify the charging protocol compatible with each device and ensure that power distribution meets the charging needs of each device.

4. The one-to-three output PD cable control method with display according to claim 1, characterized in that: The power allocation calculation and optimization steps include: Based on the charging protocol and power demand, input power and priority between devices, a dynamic programming algorithm is used to optimize power allocation in real time. The output power of each branch cable is determined by a linear programming algorithm to ensure that the power allocation of each device is within the maximum power range of the device; Dynamically adjust voltage and current distribution to ensure efficient use of power during charging and safe charging of each device.

5. A one-to-three output PD cable control method with display according to claim 4, characterized in that: The power allocation algorithm is performed by the following steps: Dynamically adjust charging power distribution, based on the charging protocol requirements of each device and the current power demand, to optimize the output power of each branch cable; When multiple devices are charging at the same time, the current and voltage are automatically adjusted according to the charging priority, and more power is allocated to devices with high power requirements to ensure the efficiency of the charging process; When the power input power is limited, the power ratio of each device is calculated based on the power allocation algorithm to maximize the power utilization efficiency among devices.

6. A one-to-three output PD cable control method with display according to claim 1, characterized in that: The step of displaying the charging status comprises: Display the voltage, current, and power of each device in real time, and calculate the charging progress; The charging status of the device is displayed through the display interface, including whether the charging is complete, the current voltage and current information, ensuring that the user can check the charging status of the device at any time; The charging progress bar is updated according to the actual charging progress of each device, reflecting the remaining charging time in real time.

7. The one-to-three output PD cable control method with display according to claim 1, characterized in that: The safety protection and fault detection steps include: Real-time monitoring of voltage, current and temperature. When overvoltage, overcurrent and overheating occur, the system will automatically cut off the current output of the abnormal device. The fault detection module monitors the working status of each branch cable and automatically triggers safety protection measures when a fault occurs; When a fault is detected, real-time feedback is given to the user through a warning mechanism to ensure the safety of the charging process.

8. The one-to-three output PD cable control method with display according to claim 1, characterized in that: The fault detection step comprises: When current overload occurs, the power supply of the corresponding branch cable is cut off and abnormal information is fed back through the warning mechanism; When the voltage is too high or the current is too low, the output power is automatically reduced to ensure that the equipment will not be damaged due to power overload; When the device temperature is too high, the system automatically reduces power output or cuts off the charging power supply to avoid overheating.

9. The one-to-three output PD cable control method with display according to claim 1, characterized in that: The multi-device synchronous charging step includes: Dynamically adjust voltage and current distribution through optimization algorithms to ensure that there is no voltage or current mismatch when different devices are charged simultaneously; By real-time monitoring of changes in device power requirements, charging strategies can be dynamically adjusted to ensure charging efficiency of multiple devices under the same power supply.

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