A magnetic attraction data line supporting 5a large current charging and a control method thereof

Abstract

This application relates to the field of data cable charging control technology, and provides a magnetic data cable supporting 5A high-current charging and its control method. The method includes: detecting the power supply capability of an external power supply device and acquiring power supply parameter information through an interface-end circuit board; transmitting the acquired power supply parameter information to a second magnetic circuit board via a differential signal link; controlling the second magnetic circuit board to transmit the power supply parameter information to a main control circuit board via a magnetic connection; the main control circuit board identifying the fast charging protocol type based on the power supply parameter information; determining the output current level based on the identified fast charging protocol type; controlling the power transmission link to transmit electrical energy to a first magnetic circuit board according to the determined output current level; transmitting electrical energy to the device to be charged via the interface-end circuit board through the second magnetic circuit board; and controlling the main control circuit board and the interface-end circuit board to monitor the voltage and current parameters of the power transmission link in real time.

Description

Technical Field

[0001] This application relates to the field of data cable charging control technology, and in particular to a magnetic data cable that supports 5A high-current charging and its control method. Background Technology

[0002] Magnetic data cables are widely used for charging various electronic devices, but they suffer from the following core technological shortcomings: 1. Insufficient current carrying capacity; conventional products can only support 3A current transmission, which cannot meet the 5A high-current fast charging requirements. 2. Electromagnetic interference generated by high current transmission can interfere with data signals, leading to unstable fast charging protocol handshakes and frequent disconnections or failure to trigger fast charging. 3. With a fast charging protocol identification module only set on one end, the signal attenuation is severe during long-distance transmission, and data cables of 1.8 meters and above cannot stably achieve high-current fast charging; 4. The abnormal protection mechanism is simple, with a monitoring circuit only set at one end. When overvoltage or overcurrent occurs during high current transmission, the power supply cannot be cut off in a timely and reliable manner, which poses a safety hazard.

[0003] Therefore, a method is urgently needed to solve at least one of the above problems. Summary of the Invention

[0004] This application provides a magnetic data cable that supports 5A high-current charging and its control method, aiming to solve the problem that existing magnetic data cables are widely used in charging various electronic devices, but have many defects.

[0005] In a first aspect, embodiments of this application provide a control method for a magnetic data cable supporting 5A high-current charging. The magnetic data cable includes a first magnetic circuit board, a second magnetic circuit board, a main control circuit board, and an interface terminal circuit board. The first magnetic circuit board and the second magnetic circuit board are electrically connected by magnetic attraction. The main control circuit board is electrically connected to the first magnetic circuit board. The interface terminal circuit board is electrically connected to the second magnetic circuit board. Both the main control circuit board and the interface terminal circuit board integrate a fast charging protocol identification chip. The method includes: The interface circuit board detects the power supply capability of the external power supply device and obtains the power supply parameter information. The interface circuit board then transmits the obtained power supply parameter information to the second magnetic circuit board through a differential signal link. The second magnetic circuit board transmits power supply parameter information to the first magnetic circuit board via magnetic connection. The first magnetic circuit board transmits the power supply parameter information to the main control circuit board. The main control circuit board identifies the fast charging protocol type based on the power supply parameter information and determines the output current level based on the identified fast charging protocol type. The main control circuit board controls the power transmission link on the main control circuit board to transmit electrical energy to the first magnetic absorbing circuit board according to the determined output current level. The first magnetic absorbing circuit board transmits electrical energy to the second magnetic absorbing circuit board through magnetic connection. The second magnetic absorbing circuit board transmits electrical energy to the device to be charged through the interface circuit board. The main control circuit board and the interface circuit board monitor the voltage and current parameters of the power transmission link in real time. When the monitored voltage or current parameters exceed the preset threshold, the main control circuit board or the interface circuit board disconnects the power transmission link.

[0006] In some embodiments, the step of detecting the power supply capability of the external power supply device and obtaining power supply parameter information through the interface circuit board includes: the interface circuit board first detecting the connection status of the external power supply device, and after confirming that the connection is completed, sequentially detecting the output voltage, output current and protocol support status of the external power supply device to obtain the corresponding power supply parameter information.

[0007] In some embodiments, the interface circuit board transmits the acquired power supply parameter information to the second magnetic circuit board via a differential signal link, including: the interface circuit board encodes the acquired power supply parameter information into a differential signal and transmits it synchronously to the second magnetic circuit board via two physically isolated signal lines.

[0008] In some embodiments, the control of the second magnetic circuit board to transmit power supply parameter information to the first magnetic circuit board via a magnetic connection, and the first magnetic circuit board to transmit power supply parameter information to the main control circuit board, includes: the second magnetic circuit board receiving and decoding differential signals, transmitting the decoded power supply parameter information to the first magnetic circuit board via signal contacts of the magnetic connection, and the first magnetic circuit board transmitting the power supply parameter information to the protocol identification module of the main control circuit board.

[0009] In some embodiments, the main control circuit board identifies the fast charging protocol type based on the power supply parameter information, including: the main control circuit board simultaneously parses the configuration channel signal and the data channel signal in the power supply parameter information, compares and verifies the two signals, and identifies the fast charging protocol type based on the verification result.

[0010] In some embodiments, the main control circuit board determines the output current level based on the identified fast charging protocol type, including: the main control circuit board matches the identified fast charging protocol type with a pre-stored protocol level correspondence table, and determines the highest supported output current level based on the matching result.

[0011] In some embodiments, the step of controlling the power transmission link on the main control circuit board to transmit electrical energy to the first magnetic circuit board according to a determined output current level, transmitting electrical energy to the second magnetic circuit board via the first magnetic circuit board through a magnetic connection, and transmitting electrical energy to the device to be charged via the interface circuit board through the second magnetic circuit board includes: the main control circuit board controlling the power transmission link to transmit electrical energy through a widened and thickened power line, and the electrical energy sequentially passing through the power contacts of the first magnetic circuit board, the power contacts of the second magnetic circuit board, and the power line of the interface circuit board to be transmitted to the device to be charged.

[0012] In some embodiments, the control main control circuit board and the interface end circuit board monitor the voltage and current parameters of the power transmission link in real time, including: the main control circuit board monitors the input voltage and input current of the power transmission link on the main control circuit board side at a fixed frequency, and the interface end circuit board monitors the output voltage and output current of the power transmission link on the interface end circuit board side at the same frequency.

[0013] In some embodiments, the step of cutting off the power transmission link when the monitored voltage or current parameter exceeds a preset threshold includes: when the monitored voltage exceeds a preset overvoltage threshold or the current exceeds a preset overcurrent threshold, the corresponding circuit board immediately cuts off the power transmission link on its side and sends a cut-off signal to another circuit board.

[0014] Secondly, this application provides a magnetic data cable that supports 5A high-current charging, used to implement the method provided in any embodiment of this application, including a first magnetic circuit board, a second magnetic circuit board, a main control circuit board, and an interface end circuit board. The first magnetic circuit board and the second magnetic circuit board are electrically connected by magnetic attraction. The main control circuit board is electrically connected to the first magnetic circuit board. The interface end circuit board is electrically connected to the second magnetic circuit board. Both the main control circuit board and the interface end circuit board integrate a fast charging protocol identification chip.

[0015] This application utilizes a 9-pin magnetic interface with physical isolation between power and signal pins. Combined with multi-strand, large-diameter wire, it can stably carry a 5A current, significantly reducing contact resistance and heat generation. The double-layer shielding structure of the wire, along with fully enclosed metal shielding components at both ends, effectively shields against electromagnetic interference, ensuring stable triggering of the fast charging protocol and high-quality data transmission. A strong magnet positioning design enhances the accuracy and reliability of the magnetic connection, preventing poor contact and arcing. A multi-PCB integrated assembly structure, combined with a break-proof card holder design, strengthens the overall mechanical strength of the product and extends its service life.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall exploded structure of the magnetic data cable described in this invention; Figure 2 This is a circuit block diagram of the magnetic data cable described in this invention; Figure 3 This is a schematic diagram of the pin layout of the second magnetic absorbing circuit board of the present invention; Figure 4 This is a schematic diagram of the magnetic contact layout of the first magnetic circuit board of the present invention; Figure 5 This is a schematic diagram of the wiring structure of the main control circuit board described in this invention; Figure 6 This is a schematic flowchart illustrating the steps of a control method for a magnetic data cable that supports 5A high-current charging, according to an embodiment of this application. Figure 7 This is a schematic block diagram of the structure of a control system for a magnetic data cable provided in one embodiment of this application; Figure 8 This is a schematic block diagram of the structure of a computer device provided in an embodiment of this application.

[0019] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] The flowchart shown in the attached diagram is for illustrative purposes only and does not necessarily include all content and operations / steps, nor does it necessarily have to be performed in the order described. For example, some operations / steps can be broken down, combined, or partially merged, so the actual execution order may change depending on the actual situation.

[0022] It should be understood that, in order to clearly describe the technical solutions of the embodiments of the present invention, the terms "first" and "second" are used in the embodiments of the present invention to distinguish identical or similar items with essentially the same function and effect. Those skilled in the art will understand that the terms "first" and "second" do not limit the quantity or execution order, and the terms "first" and "second" are not necessarily different.

[0023] It should be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0024] It should also be understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0025] Magnetic data cables are widely used for charging various electronic devices, but they suffer from the following core technological shortcomings: 1. Insufficient current carrying capacity; conventional products can only support 3A current transmission, which cannot meet the 5A high-current fast charging requirements. 2. Electromagnetic interference generated by high current transmission can interfere with data signals, leading to unstable fast charging protocol handshakes and frequent disconnections or failure to trigger fast charging. 3. With a fast charging protocol identification module only set on one end, the signal attenuation is severe during long-distance transmission, and data cables of 1.8 meters and above cannot stably achieve high-current fast charging; 4. The abnormal protection mechanism is simple, with a monitoring circuit only set at one end. When overvoltage or overcurrent occurs during high current transmission, the power supply cannot be cut off in a timely and reliable manner, which poses a safety hazard.

[0026] Therefore, a method is urgently needed to solve at least one of the above problems.

[0027] To address the aforementioned issues, this application provides a control method for a magnetically attached data cable that supports 5A high-current charging. The magnetically attached data cable is as follows: Figures 1 to 5 As shown, it includes a first magnetic circuit board, a second magnetic circuit board, a main control circuit board, and an interface circuit board. The first magnetic circuit board and the second magnetic circuit board are electrically connected by magnetic attraction. The main control circuit board is electrically connected to the first magnetic circuit board, and the interface circuit board is electrically connected to the second magnetic circuit board. Both the main control circuit board and the interface circuit board integrate a fast charging protocol identification chip.

[0028] like Figure 1As shown, the magnetic data cable of the present invention includes a Universal Serial Bus Type-C male connector 1, a second magnetic circuit board 2, a gold finger assembly 10, a gold finger socket 9, a first magnetic housing 8, a six-core cable 16, a second magnetic housing 5, a main control circuit board 4, a Universal Serial Bus Type-C socket 5, a first magnetic circuit board 14, a DC female connector 15, and a magic cable tie 11.

[0029] A Universal Serial Bus (USB) Type-C male connector 1 is electrically connected to a second magnetic circuit board 2, which is fixedly installed inside a first magnetic housing 8. A first magnetic circuit board 14 is fixedly installed inside a second magnetic housing 5, and the first magnetic circuit board 14 and the second magnetic circuit board 2 are detachably electrically connected via magnetic attraction. A main control circuit board 4 is electrically connected to the first magnetic circuit board 14 and also to a USB Type-C connector 5. One end of a six-core cable 16 is electrically connected to the second magnetic circuit board 2, and the other end is electrically connected to the main control circuit board 4. A DC female connector 15 is electrically connected to the main control circuit board 4 for connecting the device to be charged. A cable tie 11 is fitted over the six-core cable 16 for organizing and storing the data cable.

[0030] In this embodiment, the six-core cable 16 is 1.8 meters long. The six-core cable 16 contains two power wires, two data wires, one configuration channel wire, and one grounding wire. All wires are made of tin-plated copper wire, and the wire diameter meets the requirements for 5A high current transmission.

[0031] like Figure 3 As shown, the second magnetic circuit board has five linearly arranged pins on one side, from left to right: ground pin, first data pin, second data pin, configuration channel pin, and power pin. The ground pin is electrically connected to the ground wire inside the six-core cable; the first data pin is electrically connected to the first data wire inside the six-core cable; the second data pin is electrically connected to the second data wire inside the six-core cable; the configuration channel pin is electrically connected to the configuration channel wire inside the six-core cable; and the power pin is electrically connected to the power wire inside the six-core cable.

[0032] The first and second data pins are positioned adjacent to each other and maintain a preset distance from the power and ground pins, forming a differential signal transmission pair. This effectively reduces the impact of electromagnetic interference on the data signal. All pins are made of nickel-plated copper with polished surfaces to ensure a contact resistance of less than 5 milliohms.

[0033] like Figure 4As shown, the first magnetic circuit board has five concentrically arranged magnetic contacts on one side, which, from the outside to the inside, are a ground contact, a first data contact, a second data contact, a configuration channel contact, and a power contact. The positions of the five magnetic contacts correspond one-to-one with the positions of the five pins of the second magnetic circuit board. When the first and second magnetic circuit boards are magnetically connected, the five magnetic contacts make close contact with their respective five pins, achieving electrical connection.

[0034] Each magnetic contact has a width of at least 2 mm and a thickness of at least 0.3 mm, capable of carrying a 5A high current transmission. The magnetic contacts are made of gold-plated copper, possessing excellent conductivity and wear resistance, with a service life of at least 10,000 insertion and removal cycles. A ring magnet is embedded inside the first magnetic circuit board to provide the magnetic attraction force, which is at least 5 Newtons, ensuring a stable and reliable connection.

[0035] like Figure 5 As shown, the main control circuit board adopts a double-layer printed circuit board structure, with the top layer being the signal layer and the bottom layer being the power and ground layers. The main control circuit board integrates a first fast charging protocol identification chip, overvoltage protection components, overcurrent protection components, electrostatic discharge protection components, and filtering components.

[0036] The power lines on the main control circuit board are at least 3 mm wide and 2 ounces thick, capable of carrying a 5A high current transmission with a temperature rise not exceeding 30 degrees Celsius. The grounding area adopts a large-area copper plating design, with the copper plating area accounting for more than 60% of the total area of ​​the main control circuit board, which can effectively reduce grounding impedance and suppress electromagnetic interference.

[0037] The first and second data lines are arranged in parallel and maintain a distance of no less than 2 mm from the power lines to achieve physical isolation between the differential signal link and the power transmission link. The first fast charging protocol identification chip is located in the center of the main control circuit board, at an equal distance from the power lines and the ground line to ensure the symmetry of signal input and output.

[0038] The interface circuit board is integrated inside the Universal Serial Bus (USB) Type-C male connector. It integrates a second fast charging protocol identification chip, overvoltage protection components, electrostatic discharge (ESD) protection components, and filtering components. The pins of the interface circuit board are electrically connected one-to-one with the pins of the USB Type-C male connector, and the output of the interface circuit board is electrically connected to the input of the second magnetic charging circuit board.

[0039] like Figure 2 As shown, the circuit of the magnetic data cable of the present invention includes a first circuit unit and a second circuit unit. The first circuit unit is disposed in part A of the magnetic head and includes a main control circuit board and a first magnetic circuit board. The second circuit unit is disposed in part B of the magnetic head and includes a second magnetic circuit board and an interface end circuit board.

[0040] The first fast charging protocol identification chip on the main control circuit board has a first power supply pin, a first ground pin, a first positive data pin, a first negative data pin, a first configuration channel pin, and a first control output pin. The first power supply pin is electrically connected to the power supply line of the main control circuit board, the first ground pin is electrically connected to the ground line of the main control circuit board, the first positive data pin is electrically connected to the first data line, the first negative data pin is electrically connected to the second data line, the first configuration channel pin is electrically connected to the configuration channel line, and the first control output pin is electrically connected to the control terminal of the power switching element.

[0041] The second fast charging protocol identification chip on the interface circuit board has a second power supply pin, a second ground pin, a second positive data pin, a second negative data pin, a second configuration channel pin, and a second control output pin. The second power supply pin is electrically connected to the power line of the interface circuit board; the second ground pin is electrically connected to the ground line of the interface circuit board; the second positive data pin is electrically connected to the positive data pin of the Universal Serial Bus Type-C male connector; the second negative data pin is electrically connected to the negative data pin of the Universal Serial Bus Type-C male connector; the second configuration channel pin is electrically connected to the configuration channel pin of the Universal Serial Bus Type-C male connector; and the second control output pin is electrically connected to the control terminal of the interface power switch element.

[0042] Both the input terminals of the first and second fast charging protocol identification chips are connected to filter capacitors and overvoltage protection components. The filter capacitors are used to filter out high-frequency interference signals in the power supply line, and the overvoltage protection components are used to prevent damage to the chips due to excessive input voltage. Both the output terminals of the first and second fast charging protocol identification chips are connected to electrostatic discharge protection components to prevent damage to the circuit from electrostatic discharge.

[0043] The power transmission link sequentially passes through a Universal Serial Bus (USB) Type-C male connector, an interface circuit board, a second magnetic circuit board, a first magnetic circuit board, a main control circuit board, and a DC female connector. The differential signal link sequentially passes through a USB USB Type-C male connector, an interface circuit board, a second magnetic circuit board, a first magnetic circuit board, and a main control circuit board.

[0044] The control method for the magnetic data cable described in this invention specifically includes the following steps: When the Universal Serial Bus Type-C male connector is inserted into an external power supply device, the interface circuit board first detects the connection status of the external power supply device. After confirming that the connection is complete and the contact resistance meets the requirements, it sequentially detects the output voltage range, maximum output current, and supported fast charging protocol types of the external power supply device to obtain the corresponding power supply parameter information.

[0045] The interface circuit board encodes the acquired power supply parameter information into differential signals, which are then synchronously transmitted to the second magnetic circuit board via physically isolated first and second data lines. During differential signal transmission, the signal amplitudes on the first and second data lines are equal but their phases are opposite, effectively canceling common-mode electromagnetic interference generated by high-current transmission.

[0046] The second magnetic circuit board receives and decodes the differential signal, restoring it to the original power supply parameter information. It then transmits the decoded power supply parameter information to the first magnetic circuit board via magnetically connected signal contacts. The first magnetic circuit board then transmits the power supply parameter information to the first fast charging protocol identification chip on the main control circuit board.

[0047] The first fast charging protocol identification chip simultaneously parses the configuration channel signal and data channel signal in the power supply parameter information, comparing and verifying the contents of the two signals. When the contents of the two signals match, the type of fast charging protocol supported by the external power supply device is identified based on the verification result. When the contents of the two signals do not match, the power supply parameter information is reacquired and compared and verified again.

[0048] The first fast charging protocol identification chip matches the identified fast charging protocol type with a pre-stored protocol level correspondence table, and determines the highest supported output current level based on the matching result. The pre-stored protocol level correspondence table stores the maximum output current value corresponding to different fast charging protocol types.

[0049] The first fast charging protocol identification chip sends a control signal to the power switching element, causing the power switching element to conduct. The power transmission link on the main control circuit board then transmits electrical energy to the first magnetic circuit board according to the determined output current level. The electrical energy is then transmitted sequentially through the power contacts of the first magnetic circuit board, the power contacts of the second magnetic circuit board, and the power lines of the interface circuit board to the device to be charged.

[0050] The main control board monitors the input voltage and current of the power transmission link on its side at a fixed frequency of once every 10 milliseconds. The interface board monitors the output voltage and current of the power transmission link on its side at the same fixed frequency.

[0051] When the main control circuit board detects that the input voltage exceeds the preset overvoltage threshold or the input current exceeds the preset overcurrent threshold, the main control circuit board immediately disconnects the power transmission link on its side and simultaneously sends a disconnect signal to the interface circuit board. When the interface circuit board detects that the output voltage exceeds the preset overvoltage threshold or the output current exceeds the preset overcurrent threshold, the interface circuit board immediately disconnects the power transmission link on its side and simultaneously sends a disconnect signal to the main control circuit board.

[0052] When the device to be charged is fully charged or the Universal Serial Bus Type-C male connector is unplugged from the external power supply, the main control circuit board and the interface circuit board simultaneously disconnect the power transmission link, ending the charging process.

[0053] This embodiment achieves stable 5A high-current fast charging over a 1.8-meter long cable using the aforementioned structure and method, with a maximum charging power of 100 watts. The charging efficiency is improved by over 60% compared to existing 3A magnetic data cables. By transmitting power supply parameter information through a differential signal link, physical isolation between power transmission and signal transmission is achieved, increasing the fast charging protocol handshake success rate to over 99.9% and completely resolving the fast charging disconnection problem caused by high-current electromagnetic interference.

[0054] By employing a dual-fast charging protocol identification chip working collaboratively at both the main control end and the interface end, signal attenuation caused by long-distance transmission is effectively compensated, ensuring the accuracy of protocol identification at a length of 1.8 meters. The dual-end real-time monitoring and dual-end cut-off protection mechanism at both the main control end and the interface end significantly improves the safety of high-current charging, enabling it to respond to overvoltage and overcurrent anomalies and cut off power supply within 1 microsecond.

[0055] like Figure 6 As shown, the control method for the provided magnetic data cable includes steps S101 to S103. The method is applied to computer equipment. The computer equipment can be deployed on a single server or a server cluster. It can also be deployed on handheld terminals, laptops, wearable devices, or robots, etc. The method is detailed below: Step S101. The power supply capability of the external power supply device is detected and the power supply parameter information is obtained through the interface circuit board. The interface circuit board transmits the obtained power supply parameter information to the second magnetic circuit board through a differential signal link.

[0056] Specifically, the main components of this step are the interface circuit board and the second magnetic jacking circuit board, and the execution condition is that the Universal Serial Bus Type-C male connector 1 is inserted into the external power supply device. The interface circuit board is powered on and initialized, completing internal register configuration and hardware self-test. The interface circuit board detects the connection status of the external power supply device through the configuration channel pin of the Universal Serial Bus Type-C male connector. The detection method is to output a preset voltage to the configuration channel pin and detect the voltage change on the pin.

[0057] When an external power supply device is detected, the interface circuit board detects the contact resistance of each pin of the Universal Serial Bus Type-C male connector. The contact resistance is detected by outputting a constant current to the pin and detecting the voltage drop across the pin.

[0058] When the contact resistance of all pins is less than 10 milliohms, the interface circuit board sequentially detects the output voltage range, maximum output current, and supported fast charging protocol type of the external power supply device to obtain the corresponding power supply parameter information. The interface circuit board encodes the obtained power supply parameter information into binary data according to the Universal Serial Bus fast charging protocol standard. The interface circuit board converts the binary data into a differential signal with an amplitude of 3.3 volts and a phase difference of 180 degrees. The interface circuit board synchronously transmits the differential signal to the second magnetic circuit board 2 through physically isolated first and second data lines. The second magnetic circuit board 2 receives the differential signal and buffers it, awaiting further processing.

[0059] Step S102. Control the second magnetic circuit board to transmit the power supply parameter information to the first magnetic circuit board through magnetic connection. The first magnetic circuit board transmits the power supply parameter information to the main control circuit board. The main control circuit board identifies the fast charging protocol type according to the power supply parameter information and determines the output current level according to the identified fast charging protocol type.

[0060] Specifically, the main components executing this step are the second magnetic circuit board 2, the first magnetic circuit board 14, and the main control circuit board 4. The execution condition is that the second magnetic circuit board 2 receives the complete differential signal. The second magnetic circuit board 2 amplifies and filters the received differential signal to remove noise introduced during transmission. The second magnetic circuit board 2 decodes the processed differential signal into original binary power supply parameter information. The second magnetic circuit board 2 transmits the decoded power supply parameter information to the first magnetic circuit board 14 through magnetically connected signal contacts. The first magnetic circuit board 14 receives the power supply parameter information and performs verification using cyclic redundancy check (CRC).

[0061] After successful verification, the first magnetic circuit board 14 transmits the power supply parameter information to the first fast charging protocol identification chip on the main control circuit board 4. The first fast charging protocol identification chip simultaneously parses the configuration channel signal and data channel signal from the power supply parameter information, extracting the protocol identification information from both signals. The chip compares and verifies the protocol identification information from the two signals to determine if they match. If they match, the chip identifies the type of fast charging protocol supported by the external power supply device based on the verification result.

[0062] The first fast charging protocol identification chip matches the identified fast charging protocol type with a pre-stored protocol level correspondence table to determine the highest supported output current level. The first fast charging protocol identification chip then generates the corresponding power control signal, awaiting the next step of execution.

[0063] Step S103. Control the power transmission link on the main control circuit board to transmit electrical energy to the first magnetic circuit board according to the determined output current level. The first magnetic circuit board transmits electrical energy to the second magnetic circuit board through magnetic connection. The second magnetic circuit board transmits electrical energy to the device to be charged through the interface circuit board. Control the main control circuit board and the interface circuit board to monitor the voltage and current parameters of the power transmission link in real time. When the monitored voltage or current parameters exceed the preset threshold, the main control circuit board or the interface circuit board disconnects the power transmission link.

[0064] Specifically, this step is executed by the main control circuit board 4, the first magnetic cladding circuit board 14, the second magnetic cladding circuit board 2, and the interface circuit board. The execution condition is that the first fast charging protocol identification chip generates a power control signal. The first fast charging protocol identification chip sends a power control signal to the power switching element, controlling the power switching element to conduct according to a determined output current level. The power transmission link on the main control circuit board 4 is activated, and electrical energy is transmitted to the first magnetic cladding circuit board 14 according to the determined output current level. The electrical energy is then transmitted sequentially through the power contacts of the first magnetic cladding circuit board 14, the power pins of the second magnetic cladding circuit board 2, and the power lines of the interface circuit board to the device to be charged.

[0065] During power transmission, the main control board 4 samples the input voltage and input current of the power transmission link on its side at a fixed frequency of once every 10 milliseconds. The interface board samples the output voltage and output current of the power transmission link on its side at the same fixed frequency. The main control board 4 and the interface board compare the sampled voltage and current parameters with preset overvoltage and overcurrent thresholds, respectively.

[0066] When the main control circuit board 4 detects that the input voltage exceeds 20 volts or the input current exceeds 5.5 amps, it immediately sends a cutoff signal to the power switching element, disconnecting the power transmission link on its side. Simultaneously, the main control circuit board 4 sends a cutoff notification signal to the interface circuit board via a differential signal link. When the interface circuit board detects that the output voltage exceeds 20 volts or the output current exceeds 5.5 amps, it immediately sends a cutoff signal to the interface power switching element, disconnecting the power transmission link on its side. Simultaneously, the interface circuit board sends a cutoff notification signal to the main control circuit board 4 via a differential signal link.

[0067] When the device to be charged is fully charged, it sends a charging completion signal to the main control circuit board 4. The main control circuit board 4 and the interface circuit board simultaneously disconnect the power transmission link. When the Universal Serial Bus Type-C male connector 1 is unplugged from the external power supply device, the interface circuit board detects the disconnection, immediately disconnects the power transmission link, and notifies the main control circuit board 4.

[0068] In some embodiments, the step of detecting the power supply capability of the external power supply device and obtaining power supply parameter information through the interface circuit board includes: the interface circuit board first detecting the connection status of the external power supply device, and after confirming that the connection is completed, sequentially detecting the output voltage, output current and protocol support status of the external power supply device to obtain the corresponding power supply parameter information.

[0069] First, the connection status of the external power supply device is detected through the interface circuit board. After confirming the connection is complete, the output voltage, output current and protocol support of the external power supply device are detected in sequence to obtain the corresponding power supply parameter information.

[0070] The connection status is detected by outputting a 5V, 1µA detection current through the configuration channel pin on the interface circuit board to detect the voltage of the configuration channel pin. When the pin voltage is between 0.2V and 4.8V, it is determined that the external power supply device is connected.

[0071] The contact resistance detection method outputs a constant current of 100 mA sequentially to the power pin, ground pin, data pin, and configuration channel pin via the interface circuit board, and detects the voltage drop across each pin. When the voltage drop across all pins is less than 1 mV, the contact resistance is considered to meet the requirements.

[0072] The output voltage is detected by sampling the voltage of the power supply pin through a 12-bit analog-to-digital converter on the interface circuit board. The sampling frequency is 1 kHz, and the average value is taken after 10 consecutive samples to obtain the output voltage of the external power supply device.

[0073] Maximum output current detection involves gradually increasing the load current by 0.5 amps at a time, holding the increase for 100 milliseconds, and detecting changes in the output voltage. When the output voltage drops by more than 5%, the current load current is recorded as the maximum output current of the external power supply device.

[0074] Protocol support detection involves sending handshake signals for different fast charging protocols sequentially to the external power supply device via the interface circuit board, including Power Delivery Protocol, Qualcomm Fast Charging Protocol, and MediaTek Pump Fast Charging Protocol. The type of fast charging protocol supported is determined based on the response of the external power supply device.

[0075] The technical advantage of this embodiment is that it can comprehensively and accurately obtain the power supply parameter information of the external power supply equipment, providing a reliable basis for subsequent fast charging protocol identification and current level determination.

[0076] In some embodiments, the interface circuit board transmits the acquired power supply parameter information to the second magnetic circuit board via a differential signal link, including: the interface circuit board encodes the acquired power supply parameter information into a differential signal and transmits it synchronously to the second magnetic circuit board via two physically isolated signal lines.

[0077] This embodiment corresponds to the specific implementation of differential signal transmission in step S101. The acquired power supply parameter information is encoded into differential signals through the interface circuit board and synchronously transmitted to the second magnetic circuit board through two physically isolated signal lines.

[0078] Data encoding uses the interface circuit board to encode the power supply parameter information in an 8-bit binary data frame format. Each data frame contains 1 start bit, 8 data bits, 1 parity bit, and 1 stop bit.

[0079] The differential converter uses a differential driver on the interface circuit board to convert the encoded single-ended binary signal into a differential signal. When the binary data is 1, the first data line outputs 3.3 volts and the second data line outputs 0 volts; when the binary data is 0, the first data line outputs 0 volts and the second data line outputs 3.3 volts.

[0080] Physical isolation is achieved by using a double twisted arrangement inside the six-core cable 16 through the first and second data lines, with a twist pitch of 10 mm. A shielding layer is provided between the cable and the power and ground wires to achieve physical isolation.

[0081] Synchronous transmission transmits the differential signal synchronously to the second magnetic circuit board 2 at a transmission rate of 115200 baud through the interface circuit board, maintaining clock synchronization during the transmission process.

[0082] The signal is received via a differential receiver through the second magnetic circuit board 2, and the differential signal is converted into a single-ended binary signal. The technical advantage of this embodiment is that differential signal transmission can effectively cancel common-mode electromagnetic interference generated by high-current transmission, improving the anti-interference capability and reliability of signal transmission.

[0083] In some embodiments, the control of the second magnetic circuit board to transmit power supply parameter information to the first magnetic circuit board via a magnetic connection, and the first magnetic circuit board to transmit power supply parameter information to the main control circuit board, includes: the second magnetic circuit board receiving and decoding differential signals, transmitting the decoded power supply parameter information to the first magnetic circuit board via signal contacts of the magnetic connection, and the first magnetic circuit board transmitting the power supply parameter information to the protocol identification module of the main control circuit board.

[0084] This embodiment corresponds to the specific implementation of power supply parameter transmission in step S102. The differential signal is received and decoded by the second magnetic circuit board, and the decoded power supply parameter information is transmitted to the first magnetic circuit board through the magnetically connected signal contacts. The first magnetic circuit board then transmits the power supply parameter information to the protocol identification module of the main control circuit board.

[0085] Signal decoding involves clock recovery and data sampling of the received differential signal using the second magnetic circuit board 2 to extract the single-ended binary signal. Then, the binary signal is decoded according to a preset data frame format to restore the original power supply parameter information.

[0086] Data verification involves performing cyclic redundancy check on the decoded power supply parameter information using the second magnetic circuit board 2, generating a 16-bit checksum. This checksum is then compared to the checksum carried in the data frame to determine if the data transmission is correct.

[0087] After the magnetic transmission passes the verification, the second magnetic circuit board 2 transmits the power supply parameter information to the first magnetic circuit board 14 in the form of a single-ended signal through the first and second data contacts. The transmission rate is 9600 baud.

[0088] Data forwarding receives power supply parameter information via the first magnetic chuck circuit board 14 and performs cyclic redundancy check again. After the check passes, the first magnetic chuck circuit board 14 transmits the power supply parameter information to the protocol identification module of the first fast charging protocol identification chip on the main control circuit board 4 via the serial peripheral interface bus.

[0089] The technical advantage of this embodiment is that it can ensure the accuracy of power supply parameter information during the magnetic connection transmission process through multiple data verifications, and avoid protocol recognition failure due to transmission errors.

[0090] In some embodiments, the main control circuit board identifies the fast charging protocol type based on the power supply parameter information, including: the main control circuit board simultaneously parses the configuration channel signal and the data channel signal in the power supply parameter information, compares and verifies the two signals, and identifies the fast charging protocol type based on the verification result.

[0091] This embodiment corresponds to the specific implementation of fast charging protocol identification in step S102. The main control circuit board simultaneously parses the configuration channel signal and data channel signal in the power supply parameter information, compares and verifies the two signals, and identifies the fast charging protocol type based on the verification result.

[0092] Signal analysis extracts configuration channel signals and data channel signals from the power supply parameter information using the first fast charging protocol identification chip. The configuration channel signal contains power transmission protocol capability information of the external power supply device, and the data channel signal contains proprietary fast charging protocol capability information of the external power supply device.

[0093] Protocol parsing uses the first fast charging protocol identification chip to parse the configuration channel signals according to the power transmission protocol standard, extracting the power transmission protocol version, supported voltage levels, and current levels. It also parses the data channel signals according to the proprietary fast charging protocol standard, extracting the proprietary fast charging protocol version, supported voltage levels, and current levels.

[0094] The comparison verification uses the first fast charging protocol identification chip to compare the voltage and current level information extracted from the configuration channel signal and the data channel signal. When the two signals contain the same voltage and current levels, they are determined to be consistent.

[0095] When the two signals match, the first fast charging protocol identification chip determines the fast charging protocol type based on the highest voltage and current levels supported by both signals. When the two signals do not match, the first fast charging protocol identification chip resends the protocol handshake signal to the external power supply device, obtains the power supply parameter information again, and performs comparison and verification. A maximum of three retries are allowed. If all three retries fail, the default 5V 2A normal charging mode is used.

[0096] The technical advantage of this embodiment is that it can improve the accuracy of fast charging protocol identification through dual signal comparison verification, and avoid fast charging protocol identification failure or error caused by a single signal error.

[0097] In some embodiments, the main control circuit board determines the output current level based on the identified fast charging protocol type, including: the main control circuit board matches the identified fast charging protocol type with a pre-stored protocol level correspondence table, and determines the highest supported output current level based on the matching result.

[0098] The main control circuit board matches the identified fast charging protocol type with the pre-stored protocol level correspondence table, and determines the highest supported output current level based on the matching result.

[0099] The protocol level correspondence table is pre-stored in the internal flash memory of the first fast charging protocol identification chip. The table stores the maximum output current value corresponding to different fast charging protocol types.

[0100] Power Transfer Protocol version 3.0: 5 amps; Power Transfer Protocol version 2.0: 3 amps; Qualcomm Fast Charging Protocol version 4.0: 5A; Qualcomm Fast Charging Protocol version 3.0: 3 amps; MediaTek Pump-Type Fast Charging Protocol version 4.0: 5A; MediaTek Pump-Type Fast Charging Protocol version 3.0: 3A; Standard charging protocol: 2 amps.

[0101] Protocol matching involves the first fast charging protocol identification chip matching the identified fast charging protocol type with the protocol type in the protocol level correspondence table one by one.

[0102] When matching is successful, the first fast charging protocol identification chip extracts the maximum output current value of the corresponding protocol type as the highest supported output current level. When matching fails, the default 2-amp normal charging level is used.

[0103] The current level confirmation is sent to the external power supply device via the first fast charging protocol identification chip. After the external power supply device confirms the current level, the output current level is finally determined.

[0104] The technical advantage of this embodiment is that it can automatically match the highest supported output current level according to the type of fast charging protocol supported by the external power supply equipment, thereby maximizing charging efficiency.

[0105] In some embodiments, the step of controlling the power transmission link on the main control circuit board to transmit electrical energy to the first magnetic circuit board according to a determined output current level, transmitting electrical energy to the second magnetic circuit board via the first magnetic circuit board through a magnetic connection, and transmitting electrical energy to the device to be charged via the interface circuit board through the second magnetic circuit board includes: the main control circuit board controlling the power transmission link to transmit electrical energy through a widened and thickened power line, and the electrical energy sequentially passing through the power contacts of the first magnetic circuit board, the power contacts of the second magnetic circuit board, and the power line of the interface circuit board to be transmitted to the device to be charged.

[0106] The main control circuit board controls the power transmission link to transmit electrical energy through a widened and thickened power line. The electrical energy is transmitted to the device to be charged by passing through the power contacts of the first magnetic circuit board, the power contacts of the second magnetic circuit board, and the power line of the interface circuit board in sequence.

[0107] The power switch control sends a pulse width modulation control signal to the power switch element through the first fast charging protocol identification chip. By adjusting the duty cycle of the pulse width modulation signal, the conduction degree of the power switch element is controlled, thereby controlling the magnitude of the output current.

[0108] Low-impedance transmission occurs through a 3.0 mm wide power line on the main control circuit board 4, with a copper foil thickness of 2 ounces and an impedance of less than 5 milliohms. The power contacts on the first magnetic circuit board 14 are 2.0 mm wide and 0.3 mm thick, with a contact resistance of less than 5 milliohms. The power pins on the second magnetic circuit board 2 are 1.0 mm wide and 0.03 mm thick, with a contact resistance of less than 5 milliohms. The total impedance of the entire power transmission link is less than 50 milliohms.

[0109] The power transmission path involves the power output from the external power supply equipment, which then passes sequentially through the power pins of the Universal Serial Bus Type C male connector 1, the power lines of the interface circuit board, the power wires of the six-core cable 16, the power pins of the second magnetic circuit board 2, the power contacts of the first magnetic circuit board 14, the power lines of the main control circuit board 4, and the DC female connector 15, finally transmitting the power to the device to be charged.

[0110] Current regulation is achieved by the main control circuit board 4 monitoring the output current in real time during power transmission and dynamically adjusting the duty cycle of the pulse width modulation signal according to the needs of the device to be charged, so as to keep the output current stable at a certain level.

[0111] The technical advantage of this embodiment is that by widening and thickening the power lines and using low-impedance magnetic contacts, the impedance of the power transmission link can be effectively reduced, power loss can be reduced, charging efficiency can be improved, and the temperature rise during high current transmission can be reduced.

[0112] In some embodiments, the control main control circuit board and the interface end circuit board monitor the voltage and current parameters of the power transmission link in real time, including: the main control circuit board monitors the input voltage and input current of the power transmission link on the main control circuit board side at a fixed frequency, and the interface end circuit board monitors the output voltage and output current of the power transmission link on the interface end circuit board side at the same frequency.

[0113] The main control circuit board monitors the input voltage and input current of the power transmission link on the main control circuit board side at a fixed frequency, while the interface circuit board monitors the output voltage and output current of the power transmission link on the interface circuit board side at the same frequency.

[0114] The monitoring frequency is set to 100 Hz by both the main control circuit board 4 and the interface circuit board, which means that voltage and current parameters are sampled once every 10 milliseconds.

[0115] The main control terminal monitors the voltage and current at the input of the power switching element via a 12-bit analog-to-digital converter on the main control circuit board 4. Voltage sampling is achieved through a resistor divider circuit with a division ratio of 10:1. Current sampling is achieved through a milliohm-level sampling resistor connected in series in the power supply line, with a resistance of 10 milliohms.

[0116] The interface-side monitoring system samples the voltage and current at the output of the power switching components at the interface end via a 12-bit analog-to-digital converter through the interface-side circuit board. The implementation methods for voltage and current sampling are the same as those at the main control end.

[0117] Data processing involves digitally filtering the sampled voltage and current data via the main control circuit board 4 and the interface circuit board to remove noise interference. The digital filtering employs a moving average filtering algorithm with a window size of 5.

[0118] Data storage is achieved by storing the processed voltage and current data in the internal random access memory via the main control circuit board 4 and the interface circuit board, respectively. The storage depth is 100 sets, which facilitates data analysis in abnormal situations.

[0119] The technical advantage of this embodiment is that it can fully grasp the working status of the power transmission link through dual-end synchronous real-time monitoring, promptly detect abnormalities, and improve the safety of the charging process.

[0120] In some embodiments, the step of cutting off the power transmission link when the monitored voltage or current parameter exceeds a preset threshold includes: when the monitored voltage exceeds a preset overvoltage threshold or the current exceeds a preset overcurrent threshold, the corresponding circuit board immediately cuts off the power transmission link on its side and sends a cut-off signal to another circuit board.

[0121] This embodiment corresponds to the specific implementation of the abnormal cut-off protection in step S103. When the monitored voltage exceeds the preset overvoltage threshold or the current exceeds the preset overcurrent threshold, the corresponding circuit board immediately cuts off the power transmission link on its side and sends a cut-off signal to another circuit board.

[0122] The threshold settings are configured with a preset overvoltage threshold of 20 volts and a preset overcurrent threshold of 5.5 amps. These thresholds are stored in the internal non-volatile memory of the first and second fast-charging protocol identification chips and can be modified using a dedicated programming tool.

[0123] Anomaly detection compares the real-time monitored voltage and current parameters with preset thresholds via the main control circuit board 4 and the interface circuit board, respectively. An anomaly is identified when the voltage is greater than or equal to 20 volts or the current is greater than or equal to 5.5 amps.

[0124] Local disconnection occurs when the main control circuit board 4 detects an abnormality and immediately sends a low-level disconnect signal to the power switch element. The power switch element turns off within 1 microsecond, disconnecting the power transmission link on the main control side. Similarly, when the interface circuit board detects an abnormality, it immediately sends a low-level disconnect signal to the interface power switch element. The interface power switch element turns off within 1 microsecond, disconnecting the power transmission link at the interface end.

[0125] After a remote notification is completed locally, the corresponding circuit board sends a disconnection notification signal to another circuit board via a differential signal link. The disconnection notification signal is a low-level pulse lasting 10 milliseconds.

[0126] After receiving the cutoff notification signal via another circuit board, the remote cutoff device immediately cuts off the power transmission link on its own side, achieving dual cutoff protection.

[0127] After the abnormal lockout is completed, the main control circuit board 4 and the interface end circuit board enter the abnormal lockout state, prohibiting the power transmission link from being re-connected until the Universal Serial Bus Type C male connector 1 is re-inserted.

[0128] Please see Figure 7 As shown, Figure 7 This is a schematic diagram of the control system 200 for the magnetic data cable provided in this application embodiment. The control system 200 is used to execute the steps of the control method for the magnetic data cable shown in the above embodiments. The control system 200 can be a single server or a server cluster, or it can be a terminal, such as a handheld terminal, a laptop computer, a wearable device, or a robot.

[0129] like Figure 7 As shown, the control system 200 for the magnetic data cable includes: The parameter acquisition unit 201 is used to detect the power supply capability of the external power supply device and acquire power supply parameter information through the interface end circuit board. The interface end circuit board transmits the acquired power supply parameter information to the second magnetic absorbing circuit board through a differential signal link. Protocol identification unit 202 is used to control the second magnetic circuit board to transmit power supply parameter information to the first magnetic circuit board through magnetic connection. The first magnetic circuit board transmits the power supply parameter information to the main control circuit board. The main control circuit board identifies the fast charging protocol type according to the power supply parameter information and determines the output current level according to the identified fast charging protocol type. The link disconnection unit 203 is used to control the power transmission link on the main control circuit board to transmit electrical energy to the first magnetic circuit board according to a determined output current level, transmit electrical energy to the second magnetic circuit board through the first magnetic circuit board via magnetic connection, and transmit electrical energy to the device to be charged through the interface circuit board via the second magnetic circuit board; control the main control circuit board and the interface circuit board to monitor the voltage and current parameters of the power transmission link in real time, and disconnect the power transmission link when the monitored voltage or current parameters exceed a preset threshold.

[0130] In some embodiments, the step of detecting the power supply capability of the external power supply device and obtaining power supply parameter information through the interface circuit board includes: the interface circuit board first detecting the connection status of the external power supply device, and after confirming that the connection is completed, sequentially detecting the output voltage, output current and protocol support status of the external power supply device to obtain the corresponding power supply parameter information.

[0131] In some embodiments, the interface circuit board transmits the acquired power supply parameter information to the second magnetic circuit board via a differential signal link, including: the interface circuit board encodes the acquired power supply parameter information into a differential signal and transmits it synchronously to the second magnetic circuit board via two physically isolated signal lines.

[0132] In some embodiments, the control of the second magnetic circuit board to transmit power supply parameter information to the first magnetic circuit board via a magnetic connection, and the first magnetic circuit board to transmit power supply parameter information to the main control circuit board, includes: the second magnetic circuit board receiving and decoding differential signals, transmitting the decoded power supply parameter information to the first magnetic circuit board via signal contacts of the magnetic connection, and the first magnetic circuit board transmitting the power supply parameter information to the protocol identification module of the main control circuit board.

[0133] In some embodiments, the main control circuit board identifies the fast charging protocol type based on the power supply parameter information, including: the main control circuit board simultaneously parses the configuration channel signal and the data channel signal in the power supply parameter information, compares and verifies the two signals, and identifies the fast charging protocol type based on the verification result.

[0134] In some embodiments, the main control circuit board determines the output current level based on the identified fast charging protocol type, including: the main control circuit board matches the identified fast charging protocol type with a pre-stored protocol level correspondence table, and determines the highest supported output current level based on the matching result.

[0135] In some embodiments, the step of controlling the power transmission link on the main control circuit board to transmit electrical energy to the first magnetic circuit board according to a determined output current level, transmitting electrical energy to the second magnetic circuit board via the first magnetic circuit board through a magnetic connection, and transmitting electrical energy to the device to be charged via the interface circuit board through the second magnetic circuit board includes: the main control circuit board controlling the power transmission link to transmit electrical energy through a widened and thickened power line, and the electrical energy sequentially passing through the power contacts of the first magnetic circuit board, the power contacts of the second magnetic circuit board, and the power line of the interface circuit board to be transmitted to the device to be charged.

[0136] In some embodiments, the control main control circuit board and the interface end circuit board monitor the voltage and current parameters of the power transmission link in real time, including: the main control circuit board monitors the input voltage and input current of the power transmission link on the main control circuit board side at a fixed frequency, and the interface end circuit board monitors the output voltage and output current of the power transmission link on the interface end circuit board side at the same frequency.

[0137] In some embodiments, the step of cutting off the power transmission link when the monitored voltage or current parameter exceeds a preset threshold includes: when the monitored voltage exceeds a preset overvoltage threshold or the current exceeds a preset overcurrent threshold, the corresponding circuit board immediately cuts off the power transmission link on its side and sends a cut-off signal to another circuit board.

[0138] It should be noted that those skilled in the art will understand that, for the sake of convenience and brevity, the specific working process of the control system and each module of the magnetic data cable described above can be referred to the corresponding content in the various embodiments of the control method for the magnetic data cable, and will not be repeated here.

[0139] The aforementioned control method for the magnetic data cable can be implemented as a computer program, which can, for example... Figure 7 It runs on the device shown.

[0140] Please see Figure 8 , Figure 8 This is a schematic block diagram of the structure of a computer device provided in an embodiment of this application. The computer device includes a processor, a memory, and a network interface connected via a device bus, wherein the memory may include a storage medium and internal memory.

[0141] The storage medium can store operating devices and computer programs. The computer program includes program instructions that, when executed, cause the processor to perform any control method for a magnetically attached data cable that supports 5A high-current charging.

[0142] The processor provides computing and control capabilities, supporting the operation of the entire computer device.

[0143] The internal memory provides an environment for the execution of computer programs in non-volatile storage media. When the computer program is executed by the processor, it enables the processor to execute any control method for a magnetically attached data cable that supports a 5A high-current charging.

[0144] This network interface is used for network communication, such as sending assigned tasks. Those skilled in the art will understand that... Figure 8 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the terminal to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0145] It should be understood that the processor can be a Central Processing Unit (CPU), but it can also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. Among these, a general-purpose processor can be a microprocessor or any conventional processor.

[0146] In one embodiment, the processor is configured to run a computer program stored in memory to perform the following steps: The interface circuit board detects the power supply capability of the external power supply device and obtains the power supply parameter information. The interface circuit board then transmits the obtained power supply parameter information to the second magnetic circuit board through a differential signal link. The second magnetic circuit board transmits power supply parameter information to the first magnetic circuit board via magnetic connection. The first magnetic circuit board transmits the power supply parameter information to the main control circuit board. The main control circuit board identifies the fast charging protocol type based on the power supply parameter information and determines the output current level based on the identified fast charging protocol type. The main control circuit board controls the power transmission link on the main control circuit board to transmit electrical energy to the first magnetic absorbing circuit board according to the determined output current level. The first magnetic absorbing circuit board transmits electrical energy to the second magnetic absorbing circuit board through magnetic connection. The second magnetic absorbing circuit board transmits electrical energy to the device to be charged through the interface circuit board. The main control circuit board and the interface circuit board monitor the voltage and current parameters of the power transmission link in real time. When the monitored voltage or current parameters exceed the preset threshold, the main control circuit board or the interface circuit board disconnects the power transmission link.

[0147] In some embodiments, the step of detecting the power supply capability of the external power supply device and obtaining power supply parameter information through the interface circuit board includes: the interface circuit board first detecting the connection status of the external power supply device, and after confirming that the connection is completed, sequentially detecting the output voltage, output current and protocol support status of the external power supply device to obtain the corresponding power supply parameter information.

[0148] In some embodiments, the interface circuit board transmits the acquired power supply parameter information to the second magnetic circuit board via a differential signal link, including: the interface circuit board encodes the acquired power supply parameter information into a differential signal and transmits it synchronously to the second magnetic circuit board via two physically isolated signal lines.

[0149] In some embodiments, the control of the second magnetic circuit board to transmit power supply parameter information to the first magnetic circuit board via a magnetic connection, and the first magnetic circuit board to transmit power supply parameter information to the main control circuit board, includes: the second magnetic circuit board receiving and decoding differential signals, transmitting the decoded power supply parameter information to the first magnetic circuit board via signal contacts of the magnetic connection, and the first magnetic circuit board transmitting the power supply parameter information to the protocol identification module of the main control circuit board.

[0150] In some embodiments, the main control circuit board identifies the fast charging protocol type based on the power supply parameter information, including: the main control circuit board simultaneously parses the configuration channel signal and the data channel signal in the power supply parameter information, compares and verifies the two signals, and identifies the fast charging protocol type based on the verification result.

[0151] In some embodiments, the main control circuit board determines the output current level based on the identified fast charging protocol type, including: the main control circuit board matches the identified fast charging protocol type with a pre-stored protocol level correspondence table, and determines the highest supported output current level based on the matching result.

[0152] In some embodiments, the step of controlling the power transmission link on the main control circuit board to transmit electrical energy to the first magnetic circuit board according to a determined output current level, transmitting electrical energy to the second magnetic circuit board via the first magnetic circuit board through a magnetic connection, and transmitting electrical energy to the device to be charged via the interface circuit board through the second magnetic circuit board includes: the main control circuit board controlling the power transmission link to transmit electrical energy through a widened and thickened power line, and the electrical energy sequentially passing through the power contacts of the first magnetic circuit board, the power contacts of the second magnetic circuit board, and the power line of the interface circuit board to be transmitted to the device to be charged.

[0153] In some embodiments, the control main control circuit board and the interface end circuit board monitor the voltage and current parameters of the power transmission link in real time, including: the main control circuit board monitors the input voltage and input current of the power transmission link on the main control circuit board side at a fixed frequency, and the interface end circuit board monitors the output voltage and output current of the power transmission link on the interface end circuit board side at the same frequency.

[0154] In some embodiments, the step of cutting off the power transmission link when the monitored voltage or current parameter exceeds a preset threshold includes: when the monitored voltage exceeds a preset overvoltage threshold or the current exceeds a preset overcurrent threshold, the corresponding circuit board immediately cuts off the power transmission link on its side and sends a cut-off signal to another circuit board.

[0155] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, causes the processor to implement the steps of the magnetic data cable control method provided in any embodiment of this application.

[0156] The computer-readable storage medium may be an internal storage unit of the computer device described in the foregoing embodiments, such as the hard disk or memory of the computer device. The computer-readable storage medium may also be an external storage device of the computer device, such as a plug-in hard disk, SmartMedia Card (SMC), Secure Digital (SD) card, or Flash Card equipped on the computer device.

[0157] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A control method for a magnetic data cable supporting 5A high-current charging, the magnetic data cable comprising a first magnetic circuit board, a second magnetic circuit board, a main control circuit board, and an interface terminal circuit board, wherein the first magnetic circuit board and the second magnetic circuit board are electrically connected by magnetic attraction, the main control circuit board is electrically connected to the first magnetic circuit board, and the interface terminal circuit board is electrically connected to the second magnetic circuit board, wherein both the main control circuit board and the interface terminal circuit board integrate a fast charging protocol identification chip, characterized in that... The method includes: The interface circuit board detects the power supply capability of the external power supply device and obtains the power supply parameter information. The interface circuit board then transmits the obtained power supply parameter information to the second magnetic circuit board through a differential signal link. The second magnetic circuit board transmits power supply parameter information to the first magnetic circuit board via magnetic connection. The first magnetic circuit board transmits the power supply parameter information to the main control circuit board. The main control circuit board identifies the fast charging protocol type based on the power supply parameter information and determines the output current level based on the identified fast charging protocol type. The main control circuit board controls the power transmission link on the main control circuit board to transmit electrical energy to the first magnetic absorbing circuit board according to the determined output current level. The first magnetic absorbing circuit board transmits electrical energy to the second magnetic absorbing circuit board through magnetic connection. The second magnetic absorbing circuit board transmits electrical energy to the device to be charged through the interface circuit board. The main control circuit board and the interface circuit board monitor the voltage and current parameters of the power transmission link in real time. When the monitored voltage or current parameters exceed the preset threshold, the main control circuit board or the interface circuit board disconnects the power transmission link.

2. The method according to claim 1, characterized in that, The process of detecting the power supply capability of an external power supply device and obtaining power supply parameter information via the interface circuit board includes: The interface circuit board first detects the connection status of the external power supply device. After confirming the connection is complete, it sequentially detects the output voltage, output current, and protocol support of the external power supply device to obtain the corresponding power supply parameter information.

3. The method according to claim 1, characterized in that, The interface circuit board transmits the acquired power supply parameter information to the second magnetic circuit board via a differential signal link, including: The interface circuit board encodes the acquired power supply parameter information into differential signals, which are then synchronously transmitted to the second magnetic circuit board through two physically isolated signal lines.

4. The method according to claim 1, characterized in that, The control second magnetic circuit board transmits power supply parameter information to the first magnetic circuit board via a magnetic connection, and the first magnetic circuit board transmits the power supply parameter information to the main control circuit board, including: The second magnetic circuit board receives and decodes the differential signal, and transmits the decoded power supply parameter information to the first magnetic circuit board through the magnetically connected signal contacts. The first magnetic circuit board then transmits the power supply parameter information to the protocol identification module of the main control circuit board.

5. The method according to claim 1, characterized in that, The main control circuit board identifies the fast charging protocol type based on power supply parameter information, including: The main control circuit board simultaneously analyzes the configuration channel signal and data channel signal in the power supply parameter information, compares and verifies the two signals, and identifies the fast charging protocol type based on the verification results.

6. The method according to claim 1, characterized in that, The main control circuit board determines the output current level based on the identified fast charging protocol type, including: The main control circuit board matches the identified fast charging protocol type with the pre-stored protocol level correspondence table, and determines the highest supported output current level based on the matching result.

7. The method according to claim 1, characterized in that, The process of controlling the power transmission link on the main control circuit board to transmit electrical energy to the first magnetic circuit board according to a determined output current level, transmitting electrical energy to the second magnetic circuit board via the first magnetic circuit board through a magnetic connection, and transmitting electrical energy to the device to be charged via the interface circuit board through the second magnetic circuit board includes: The main control circuit board controls the power transmission link to transmit electrical energy through a widened and thickened power line. The electrical energy is transmitted to the device to be charged by passing through the power contacts of the first magnetic circuit board, the power contacts of the second magnetic circuit board, and the power line of the interface circuit board in sequence.

8. The method according to claim 1, characterized in that, The main control circuit board and interface circuit board monitor the voltage and current parameters of the power transmission link in real time, including: The main control circuit board monitors the input voltage and input current of the power transmission link on the main control circuit board side at a fixed frequency, while the interface circuit board monitors the output voltage and output current of the power transmission link on the interface circuit board side at the same frequency.

9. The method according to claim 1, characterized in that, When the monitored voltage or current parameter exceeds a preset threshold, the main control circuit board or interface circuit board disconnects the power transmission link, including: When the detected voltage exceeds the preset overvoltage threshold or the current exceeds the preset overcurrent threshold, the corresponding circuit board immediately disconnects the power transmission link on its side and sends a disconnect signal to another circuit board.

10. A magnetic data cable supporting 5A high-current charging, used to implement the method as described in any one of claims 1-9, characterized in that, It includes a first magnetic circuit board, a second magnetic circuit board, a main control circuit board, and an interface circuit board. The first magnetic circuit board and the second magnetic circuit board are electrically connected by magnetic attraction. The main control circuit board is electrically connected to the first magnetic circuit board. The interface circuit board is electrically connected to the second magnetic circuit board. Both the main control circuit board and the interface circuit board integrate a fast charging protocol identification chip.

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