A charging device for an interface device

Abstract

The application relates to a charging device of an interface equipment, which comprises a first interface module, an adapter module, a second interface module and a third interface module. The first interface module is connected with a first interface equipment, the second interface module is connected with a second interface equipment, and the third interface module is connected with a third interface equipment. The first interface equipment and the second interface equipment support the same protocol, and the first interface equipment and the third interface equipment support different protocols. The adapter module is connected between the first interface module and the second interface module and the third interface module, and is used for charging between interface equipments with different protocols, so that the first interface equipment charges the second interface equipment and the third interface equipment, charging between different protocol equipments is realized, and the universality between the equipments and the adaptability of the charging system are improved.

Description

Technical Field

[0001] This application relates to the field of interface device technology, and in particular to a charging device for an interface device. Background Technology

[0002] With the rapid development of mobile electronic devices and the widespread adoption of USB Type-C interface technology, Type-C interface charging and discharging technology based on the PD (Power Delivery) protocol has become the mainstream solution. In existing technologies, some Type-C interface devices already possess bidirectional power supply capabilities, enabling mutual charging and discharging between two Type-C interface devices that support the PD protocol.

[0003] However, in real-world applications, users often need to perform charging and discharging operations not only between two Type-C devices, but also use a Type-C device supporting the PD protocol as a power source to charge other devices that do not have a Type-C interface or do not support the PD protocol (such as traditional USB-A interface devices). Existing charging devices or adapters are typically limited to Type-C to Type-C interfaces, lacking the ability to support compatible charging between heterogeneous interfaces. In particular, they cannot effectively identify and safely power non-PD protocol devices, significantly limiting device compatibility and flexibility.

[0004] Therefore, there is an urgent need for a technical solution that can use Type-C interface devices that support the PD protocol as a power source, and is compatible with charging other devices that do not support the PD protocol or use non-Type-C interface devices, so as to improve the universality between devices and the adaptability of the charging system. Summary of the Invention

[0005] This application provides a charging device for interface devices to address the problem that existing technologies cannot achieve charging between devices with different protocols, which significantly limits device compatibility and flexibility. This application uses an adapter module connected between a first interface module and two or three interface modules. The adapter module is used for charging interface devices with different protocols, enabling the first interface device to charge the second and third interface devices, thereby improving the versatility between devices and the adaptability of the charging system.

[0006] In a first aspect, this application provides a charging device for an interface device, the device comprising a first interface module, an adapter module, a second interface module, and a third interface module;

[0007] The input end of the first interface module is connected to the first interface device, and the output end is connected to the input end of the adapter module;

[0008] The first output terminal of the adapter module is connected to the input terminal of the second interface module;

[0009] The output of the second interface module is connected to the second interface device;

[0010] The second output terminal of the adapter module is connected to the input terminal of the third interface module;

[0011] The output of the third interface module is connected to the third interface device;

[0012] The first interface device and the second interface device support the same protocol, while the first interface device and the third interface device support different protocols.

[0013] The adapter module is used for charging between interface devices with different protocols, enabling the first interface device to charge the second and third interface devices.

[0014] Optionally, the first interface device is a Type-C interface device with the PD protocol;

[0015] The second interface device is a Type-C interface device with the PD protocol;

[0016] The third interface device is a USB-A interface device that does not use the PD protocol.

[0017] Optionally, the adapter module may further include a current detection module, a decoy IC circuit, and a battery management chip;

[0018] The input terminal of the current detection module is connected to the output terminal of the first interface module, and the output terminal is connected to the input terminal of the battery management chip.

[0019] The output terminal of the battery management chip is connected to the decoy IC circuit.

[0020] The current detection module is used to detect the detection current of the first interface device in real time.

[0021] The decoy IC circuit is used to trick the first interface device into discharging through the first interface module;

[0022] The battery management chip is used to determine whether to activate the decoy IC circuit based on the detected current, so that the first interface device can charge the second interface device and the third interface device.

[0023] Optionally, the battery management chip, in response to the current detected by the current detection module, controls the activation of the decoy IC circuit, so that the first interface device can charge the third interface device through the decoy IC circuit.

[0024] Optionally, the battery management chip, in response to the current detected by the current detection module, sends a charging signal to the second interface module, so that the first interface device charges the second interface device.

[0025] Optionally, the battery management chip, in response to the detected current of the first interface module, sends a charging signal to the second interface module to enable the first interface device to charge the second interface device, and simultaneously controls the activation of the decoy IC circuit to enable the first interface device to charge the third interface device through the decoy IC circuit.

[0026] Optionally, the adapter module further includes an overvoltage protection circuit and a voltage comparator;

[0027] The overvoltage protection circuit includes a transient voltage suppression diode and a self-resetting fuse, which are located at the input and output terminals of the adapter module.

[0028] The voltage comparator is used to continuously monitor the voltage of each interface module and compare it with a preset threshold. When an overvoltage condition is detected, the battery management chip is triggered to disconnect the corresponding charging circuit.

[0029] Optionally, both the first interface module and the second interface module include:

[0030] The PD protocol parsing unit is used to decode and generate communication messages that conform to the USB PD 3.0 standard.

[0031] The CC line detection circuit is used to monitor the connection status and cable impedance of the interface module in real time.

[0032] Optionally, the battery management chip further includes a dynamic adjustment module for dynamically adjusting the charging power allocation strategy based on the detected current.

[0033] Optionally, the battery management chip further includes a thermal management unit, which triggers the battery management chip to disconnect the corresponding charging circuit when the temperature of the battery management chip is detected to exceed a safety threshold.

[0034] Compared with the prior art, the technical solution provided in this application has the following advantages: This application uses an adapter module connected between the first interface module and the second and third interface modules. The adapter module is used for charging between interface devices with different protocols, enabling the first interface device to charge the second and third interface devices. This achieves effective guidance and identification of non-PD protocol devices and safe power supply, which is beneficial for improving device compatibility and usage flexibility. Furthermore, the charging device also includes an overvoltage protection circuit, a voltage comparator, a dynamic power adjustment unit, and a thermal management module, enhancing the system's safety protection capabilities and charging efficiency. Attached Figure Description

[0035] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0036] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0038] Figure 1 This is a schematic diagram of the structure of a charging device for an interface device provided in an embodiment of this application;

[0039] Figure 2 This is a schematic diagram of the specific structure of the adapter module provided in the embodiment of this application. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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.

[0041] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0042] To address the problems in the prior art, this application provides a charging device for interface devices. This application uses an adapter module connected between a first interface module and two or three interface modules. The adapter module facilitates charging between interface devices using different protocols, enabling the first interface device to charge the second and third interface devices. This achieves effective identification and safe power supply for non-PD protocol devices, improving device compatibility and usage flexibility. Furthermore, the charging device includes an overvoltage protection circuit, a voltage comparator, a dynamic power adjustment unit, and a thermal management module, enhancing the system's safety protection capabilities and charging efficiency.

[0043] Figure 1 This is a schematic diagram of the structure of a charging device for an interface device provided in an embodiment of this application. The device includes a first interface module, an adapter module, a second interface module, and a third interface module.

[0044] The input end of the first interface module is connected to the first interface device, and the output end is connected to the input end of the adapter module;

[0045] The first output terminal of the adapter module is connected to the input terminal of the second interface module;

[0046] The output of the second interface module is connected to the second interface device;

[0047] The second output terminal of the adapter module is connected to the input terminal of the third interface module;

[0048] The output of the third interface module is connected to the third interface device;

[0049] The first interface device and the second interface device support the same protocol, while the first interface device and the third interface device support different protocols.

[0050] The adapter module is used for charging between interface devices with different protocols, enabling the first interface device to charge the second and third interface devices.

[0051] In this application embodiment, an interface device refers to a hardware or software component used to achieve signal transmission, protocol conversion, or functional connection between two different systems, modules, or devices. Its essential function is to "bridge" two systems that cannot communicate directly, enabling them to interoperate. Generally, different interface devices support different protocols for their corresponding interfaces, and communication interface devices typically include protocol and level conversion functions.

[0052] In this embodiment, the first interface module and the second interface module can be two Type-C male connectors in practical applications, and the third interface module can be a USB-A female connector in practical applications. The adapter module includes at least one adapter, which contains a PCBA. The circuitry within the PCBA can enable charging in multiple modes. The three interfaces are connected by a cable.

[0053] Furthermore, the first interface device is a Type-C interface device with the PD protocol;

[0054] The second interface device is a Type-C interface device with the PD protocol;

[0055] The third interface device is a USB-A interface device that does not use the PD protocol.

[0056] In this application's embodiments, the protocols involved are mainly PD and non-PD protocols. USB PD (Power Delivery) protocol is a communication protocol for high-power power supply negotiation via the USB-C interface. It allows the USB interface to move beyond the traditional 5V / 0.5A limitation and achieve intelligent power supply from 5V to 20V, with a maximum of 240W (48V / 5A). In the USB power supply system, non-PD protocols typically refer to traditional power supply methods that do not support the USB Power Delivery (PD) protocol. These protocols cannot perform high-power intelligent negotiation and only provide a low-power output at a fixed voltage (usually 5V). In the prior art, interface devices with the PD protocol cannot charge interface devices with the non-PD protocol. This application proposes an adapter mode to solve this problem.

[0057] Figure 2 This is a schematic diagram of the specific structure of the adapter module provided in the embodiment of this application. The adapter module also includes a current detection module, a decoy IC circuit, and a battery management chip.

[0058] The input terminal of the current detection module is connected to the output terminal of the first interface module, and the output terminal is connected to the input terminal of the battery management chip.

[0059] The output terminal of the battery management chip is connected to the decoy IC circuit.

[0060] The current detection module is used to detect the detection current of the first interface device in real time.

[0061] The decoy IC circuit is used to trick the first interface device into discharging through the first interface module;

[0062] The battery management chip is used to determine whether to activate the decoy IC circuit based on the detected current, so that the first interface device can charge the second interface device and the third interface device.

[0063] In this embodiment of the application, an adapter is an electronic accessory or device used to connect two devices with different interfaces to achieve physical interface compatibility, signal switching, or protocol conversion.

[0064] A current sensing module is an electronic module used to measure the magnitude of current in a circuit. It can convert current signals into easily processed voltage signals for use by MCUs, PLCs, or controllers.

[0065] A decoy IC circuit, also known as a spoofing circuit, analog identification circuit, or fake load identification circuit, is a type of circuit that "deceives" the power supply or host interface by simulating the characteristics of a legitimate device, causing it to incorrectly determine the type or permissions of the currently connected device, thereby achieving charging. In the application scenario of this application, it occurs when a non-PD device forcibly obtains 9V / 12V from a PD power supply. The first interface module is connected to the PD protocol unit in the decoy IC circuit via CC1 and CC2. For example, it can use an MCU or EEPROM to emulate a piece of E-Marker ROM data, or simulate an acknowledgment current capability field of 5A to induce the PD to output 20V / 5A.

[0066] Furthermore, in response to the current detected by the current detection module, the battery management chip controls the activation of the decoy IC circuit, so that the first interface device can charge the third interface device through the decoy IC circuit.

[0067] In this embodiment, when the first interface module is connected to a Type-C interface device with PD protocol, an access current appears in the circuit. If the interface device that needs to be charged at this time is a USB-A interface device without PD protocol, and the device is connected in the third interface mode, the battery management chip responds to the detected current and sends a first control signal to control the start of the decoy IC circuit, so that the first interface module opens the interface, and the Type-C first interface device with PD protocol discharges to the third interface module through the first interface module and the adapter module, thereby enabling charging of the USB-A third interface device without PD protocol.

[0068] Furthermore, in response to the current detected by the current detection module, the battery management chip sends a charging signal to the second interface module, so that the first interface device charges the second interface device.

[0069] In this embodiment, when the first interface module is connected to an interface device with the PD protocol, an access current appears in the circuit. If the interface device that needs to be charged is also a Type-C interface device with the PD protocol, and this device is connected to the second interface mode, the battery management chip responds to the detected current and sends a charging signal to the second interface module. The Type-C first interface device with the PD protocol discharges to the second interface module through the first interface module and the adapter module, thereby enabling charging of the Type-C second interface device with the PD protocol.

[0070] Furthermore, in response to the detected current of the first interface module, the battery management chip sends a charging signal to the second interface module to enable the first interface device to charge the second interface device, and simultaneously controls the activation of the decoy IC circuit to enable the first interface device to charge the third interface device through the decoy IC circuit.

[0071] In this embodiment, the first interface device can charge the second interface device connected to the second interface module through the first interface module, or charge the third interface device connected to the third interface module through the first interface module, or charge both the second and third interface devices simultaneously through the first interface module. In practical applications, the number and type of devices connected to the charging interface can be flexibly adjusted, and no specific limitation is made here.

[0072] Furthermore, the adapter module also includes an overvoltage protection circuit and a voltage comparator;

[0073] The overvoltage protection circuit includes a transient voltage suppression diode and a self-resetting fuse, which are located at the input and output terminals of the adapter module.

[0074] The voltage comparator is used to continuously monitor the voltage of each interface module and compare it with a preset threshold. When an overvoltage condition is detected, the battery management chip is triggered to disconnect the corresponding charging circuit.

[0075] In this embodiment, the overvoltage protection circuit includes a transient voltage suppression diode and a resettable fuse, located at the input and output terminals of the adapter module. This protects the adapter from excessive voltage or current at either end, preventing damage from propagating along the circuit and burning out equipment components. A voltage comparator continuously monitors the voltage across each circuit and sets threshold values, working in conjunction with the overvoltage protection circuit to protect the interface equipment.

[0076] Furthermore, both the first interface module and the second interface module include:

[0077] The PD protocol parsing unit is used to decode and generate communication messages that conform to the USB PD 3.0 standard.

[0078] The CC line detection circuit is used to monitor the connection status and cable impedance of the interface module in real time.

[0079] In this embodiment, since each module involves protocol communication, both the first interface module and the second interface module support the PD protocol. Both modules include a PD protocol parsing unit, which is one of the core modules in the USB PD power system. Its main function is to receive, identify, parse, and respond to information packets (PD Packets) in the USB PD communication protocol to achieve power negotiation (such as voltage / current switching) and control between devices. The CC line detection circuit uses analog circuits (comparators, filters) to extract digital signals by receiving the BMC encoded signal on the CC line, thereby monitoring the interface connection status and cable impedance in real time.

[0080] Furthermore, the battery management chip also includes a dynamic adjustment module for dynamically adjusting the charging power allocation strategy based on the detected current.

[0081] In this embodiment, the battery management chip can adjust the charging power allocation strategy based on the detected current through a dynamic adjustment module. For example, it can dynamically allocate charging power according to a preset priority based on the real-time power requirements of the two charging devices and the power supply capability of the first Type-C interface device.

[0082] Furthermore, the battery management chip also includes a thermal management unit, which is used to trigger the battery management chip to disconnect the corresponding charging circuit when the temperature of the battery management chip is detected to exceed a safety threshold.

[0083] In this embodiment, when the chip temperature is detected to exceed the safety threshold, a graded power reduction protection mechanism is activated, which helps protect interface devices, adapters, and lines.

[0084] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the units and modules in the above system can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0085] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0086] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed in this application can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0087] In the embodiments provided in this application, it should be understood that the disclosed devices / terminal equipment and methods can be implemented in other ways. For example, the device / terminal equipment embodiments described above are merely illustrative. For instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling or direct coupling or communication connection may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0088] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0089] If the integrated module / unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying the computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc. It should be noted that the content included in the computer-readable medium can be appropriately added or removed according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media do not include electrical carrier signals and telecommunication signals.

[0090] The implementation of all or part of the processes in the methods of the above embodiments can also be accomplished by a computer program product. When the computer program product is run on a terminal device, the terminal device can implement the steps in the various method embodiments described above.

[0091] The embodiments described above are only used to illustrate the technical solutions of this application, and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A charging device for an interface device, characterized in that, The device includes a first interface module, an adapter module, a second interface module, and a third interface module; The input end of the first interface module is connected to the first interface device, and the output end is connected to the input end of the adapter module; The first output terminal of the adapter module is connected to the input terminal of the second interface module; The output of the second interface module is connected to the second interface device; The second output terminal of the adapter module is connected to the input terminal of the third interface module; The output of the third interface module is connected to the third interface device; The first interface device and the second interface device support the same protocol, while the first interface device and the third interface device support different protocols. The adapter module is used for charging between interface devices with different protocols, enabling the first interface device to charge the second and third interface devices.

2. The charging device according to claim 1, characterized in that, The first interface device is a Type-C interface device with the PD protocol; The second interface device is a Type-C interface device with the PD protocol; The third interface device is a USB-A interface device that does not use the PD protocol.

3. The charging device according to claim 1, characterized in that, The adapter module also includes a current detection module, a decoy IC circuit, and a battery management chip; The input terminal of the current detection module is connected to the output terminal of the first interface module, and the output terminal is connected to the input terminal of the battery management chip. The output terminal of the battery management chip is connected to the decoy IC circuit. The current detection module is used to detect the detection current of the first interface device in real time. The decoy IC circuit is used to trick the first interface device into discharging through the first interface module; The battery management chip is used to determine whether to activate the decoy IC circuit based on the detected current, so that the first interface device can charge the second interface device and the third interface device.

4. The charging device according to claim 3, characterized in that, The battery management chip responds to the current detected by the current detection module and controls the activation of the decoy IC circuit so that the first interface device can charge the third interface device through the decoy IC circuit.

5. The charging device according to claim 3, characterized in that, The battery management chip responds to the current detected by the current detection module by sending a charging signal to the second interface module, so that the first interface device charges the second interface device.

6. The charging device according to claim 3, characterized in that, In response to the detected current of the first interface module, the battery management chip sends a charging signal to the second interface module to enable the first interface device to charge the second interface device, and simultaneously controls the activation of the decoy IC circuit to enable the first interface device to charge the third interface device through the decoy IC circuit.

7. The charging device according to claim 1, characterized in that, The adapter module also includes an overvoltage protection circuit and a voltage comparator; The overvoltage protection circuit includes a transient voltage suppression diode and a self-resetting fuse, which are located at the input and output terminals of the adapter module. The voltage comparator is used to continuously monitor the voltage of each interface module and compare it with a preset threshold. When an overvoltage condition is detected, the battery management chip is triggered to disconnect the corresponding charging circuit.

8. The charging device according to claim 1, characterized in that, Both the first interface module and the second interface module include: The PD protocol parsing unit is used to decode and generate communication messages that conform to the USB PD 3.0 standard. The CC line detection circuit is used to monitor the connection status and cable impedance of the interface module in real time.

9. The charging device according to claim 3, characterized in that, The battery management chip also includes a dynamic adjustment module for dynamically adjusting the charging power allocation strategy based on the detected current.

10. The charging device according to claim 3, characterized in that, The battery management chip also includes a thermal management unit, which is used to trigger the battery management chip to disconnect the corresponding charging circuit when the temperature of the battery management chip exceeds a safety threshold.

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