Identification circuit, adapter and electronic equipment

Abstract

The utility model provides an identification circuit, an adapter and electronic equipment, and relates to the technical field of electronic equipment. The identification circuit comprises an input port, an output port, an energy storage circuit and a pulse circuit. The input port is used for connecting a first power supply accessed by the adapter; the output port is used for being connected with electronic equipment accessed by the adapter, and the adapter can perform conversion processing on the first power supply so as to output target electric power to the electronic equipment; the energy storage circuit is arranged between the input port and the output port and can obtain electric energy from the output port; and the pulse circuit is connected with the energy storage circuit and the output port and can respond to the electric energy provided by the energy storage circuit and output a square wave signal to the electronic equipment through the output port.

Description

Technical Field

[0001] This application relates to the field of electronic equipment technology, and more particularly to an identification circuit, adapter, and electronic equipment. Background Technology

[0002] With the development of science and technology, the performance of electronic devices has gradually improved, but their power consumption has also become increasingly higher. Electronic devices are equipped with adapters to provide sufficient energy to ensure that their performance is fully utilized, while operating stably, safely, and efficiently.

[0003] To achieve power consumption control and improve the safety, stability and efficiency of electronic devices, it is necessary to identify the adapters connected to the electronic devices. Different adapters can be identified by detecting the voltage value of the ID Pin (Identification Pin) through an embedded controller. However, there are many interference factors that affect the accuracy of identification. Utility Model Content

[0004] The purpose of this application is to provide an identification circuit, adapter, and electronic device, and the technical solution is as follows:

[0005] The first aspect of this application provides an identification circuit, comprising:

[0006] The input port is used to connect the adapter to the first power source.

[0007] The output port is used to connect the electronic device to the adapter. The adapter can convert the first power supply to output the target power to the electronic device.

[0008] An energy storage circuit is located between the input port and the output port, and can obtain electrical energy from the output port.

[0009] The pulse circuit, connected to the energy storage circuit and the output port, can respond to the electrical energy provided by the energy storage circuit and output a square wave signal to the electronic device through the output port.

[0010] In some embodiments, the aforementioned identification circuit includes an energy storage circuit comprising a switching unit and a first capacitor element; the switching unit is connected to an input port and has a target voltage threshold; the first capacitor element is connected to the switching unit and an output port, the first capacitor element is capable of obtaining electrical energy from the output port, and the switching unit is capable of conducting a path between the energy storage circuit and the pulse circuit when a voltage greater than the target voltage threshold is applied to the first capacitor element, so that the energy storage circuit provides electrical energy to the pulse circuit.

[0011] In some embodiments, the aforementioned identification circuit includes a first capacitor element capable of obtaining electrical energy from an electronic device from an output port, and a switching unit capable of disconnecting the path between the energy storage circuit and the pulse circuit when the voltage applied to the first capacitor element is less than a target voltage threshold.

[0012] In some embodiments, the aforementioned identification circuit includes an integrated circuit element connected to a switching unit and an output port, which generates a square wave signal when the switching unit is turned on.

[0013] In some embodiments, the aforementioned identification circuit, wherein the pulse circuit further includes an adjustment component connected to an integrated circuit element, the adjustment component including at least one resistor and at least one second capacitor element, the resistor and the second capacitor element being used to adjust the frequency and duty cycle of the square wave signal.

[0014] In some embodiments, the aforementioned identification circuit has an output port provided with an identification pin, which is connected to an energy storage circuit and a pulse circuit. The identification pin is used by the electronic device to provide power to the energy storage circuit and to output a square wave signal to the electronic device.

[0015] A second aspect of this application provides an adapter, including an adapter body and an identification circuit disposed on the adapter body, wherein the identification circuit includes:

[0016] The input port is used to connect the adapter to the first power source.

[0017] The output port is used to connect the electronic device to the adapter. The adapter can convert the first power supply to output the target power to the electronic device.

[0018] An energy storage circuit is located between the input port and the output port, and can obtain electrical energy from the output port.

[0019] The pulse circuit, connected to the energy storage circuit and the output port, can respond to the electrical energy provided by the energy storage circuit and output a square wave signal to the electronic device through the output port.

[0020] In some embodiments, the aforementioned adapter further includes a filter circuit; the filter circuit is disposed between the output port and the pulse circuit for filtering the square wave signal.

[0021] A third aspect of this application provides an electronic device, including a controller and an adapter for power supply. The adapter includes an identification circuit, which includes:

[0022] The input port is used to connect the adapter to the first power source.

[0023] The output port is used to connect the electronic device to the adapter. The adapter can convert the first power supply to output the target power to the electronic device.

[0024] An energy storage circuit is located between the input port and the output port, and can obtain electrical energy from the output port.

[0025] The pulse circuit, connected to the energy storage circuit and the output port, can respond to the electrical energy provided by the energy storage circuit and output a square wave signal to the electronic device through the output port.

[0026] The controller can identify the adapter's attribute identifier based on the square wave signal, and control the adapter's operating parameters and / or output target prompt information based on the attribute identifier.

[0027] In some embodiments, the aforementioned electronic device, wherein the controller is capable of controlling the adapter to provide power input according to the operating parameters matching the target identifier when the attribute identifier matches the target identifier; and / or, outputting a prompt message indicating that the adapter has failed target authentication when the attribute identifier does not match any identifier in the preset identifier library.

[0028] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, the preferred embodiments of this application are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 A schematic diagram of the structure of an identification circuit provided in an embodiment of this application is shown.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Input port;

[0033] 2. Output port; 21. Identification pin;

[0034] 3. Energy storage circuit; 31. Switching unit; 32. First capacitor element;

[0035] 4. Pulse circuit; 41. Integrated circuit element; 42. Adjustment component; 421. Resistor; 422. Second capacitor element. Detailed Implementation

[0036] The embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings and examples. The detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of this disclosure by way of example, but should not be used to limit the scope of this disclosure. This disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0037] These embodiments are provided to make the disclosure thorough and complete, and to fully express the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, material composition, numerical expressions, and values ​​set forth in these embodiments should be interpreted as exemplary only and not as limiting.

[0038] It should be noted that, in the description of this disclosure, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationship, are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0039] Furthermore, the terms "first," "second," and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. "Vertical" is not strictly vertical, but within the permissible margin of error. "Parallel" is not strictly parallel, but within the permissible margin of error. Terms such as "including" or "contains" mean that the element preceding the word encompasses the element listed after the word, and do not exclude the possibility of encompassing other elements as well.

[0040] It should also be noted that, in the description of this disclosure, unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this disclosure depending on the specific circumstances. When a particular device is described as being located between a first device and a second device, an intermediary device may or may not be present between the particular device and the first or second device.

[0041] All terms used in this disclosure have the same meaning as understood by one of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.

[0042] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0043] Example 1

[0044] like Figure 1 As shown, the first aspect of this application provides an identification circuit, including an input port 1, an output port 2, an energy storage circuit 3, and a pulse circuit 4; the input port 1 is used to connect to a first power source connected to an adapter; the output port 2 is used to connect to an electronic device connected to the adapter, the adapter being able to convert the first power source to output target power to the electronic device; the energy storage circuit 3 is disposed between the input port 1 and the output port 2, and is able to obtain electrical energy from the output port 2; the pulse circuit 4 is connected to the energy storage circuit 3 and the output port 2, and is able to respond to the electrical energy provided by the energy storage circuit 3 by outputting a square wave signal to the electronic device through the output port 2.

[0045] Specifically, the identification circuit disclosed in this application is installed on the adapter of the electronic device. The identification circuit includes an input port 1, which is used to connect the adapter to a first power source. The first power source can be AC ​​power, non-AC power, or a power bank, etc., and is not limited in specific terms, as long as it can provide power. The identification circuit also includes an output port 2, which is connected to the electronic device. The output port 2 can be a USB (Universal Serial Bus) interface of type Type-A, Type-C, etc., or a DC (Direct Current) plug, etc., and is not limited in specific terms. This application can also include a power supply circuit in conjunction with the identification circuit, so that after the electronic device identifies the adapter model, the power supply circuit can output the target power to the electronic device. The target power can be 5V, 9V, 12V, 20V, etc., and is not limited in specific terms. The identification circuit of this application enables the adapter to provide power according to the operating parameters matched with the electronic device, so as to avoid triggering the adapter overheating, abnormal protection, etc., reduce safety risks, and ensure the stable and reliable operation of the electronic device.

[0046] To identify the adapter model and improve power supply efficiency under matched operating parameters, the identification circuit of this application includes an energy storage circuit 3 and a pulse circuit 4. The energy storage circuit 3 is located between the input port 1 and the output port 2, and can obtain and store electrical energy from the output port 2. The energy storage circuit 3 is connected to the pulse circuit 4. When the energy storage circuit 3 reaches a predetermined amount of electrical energy, the pulse circuit 4 can respond to the electrical energy provided by the energy storage circuit 3 by generating and outputting a square wave signal. The square wave signal allows the electronic device to identify the adapter's attribute identifier by reading various parameter information such as the duty cycle, frequency, amplitude, pulse width modulation, encoding, and phase of the square wave signal. Based on the identified attribute identifier, the electronic device can control the adapter's operating parameters to improve the power supply efficiency of the electronic device, or output target information to inform the user, thereby improving the safety and user experience during the use of the electronic device.

[0047] In some embodiments, electronic devices can identify their model by reading the duty cycle of a square wave signal. The square wave signal can have a duty cycle ranging from 1% to 100%, with different adapters corresponding to different duty cycle signals, thus meeting the identification needs of various adapter types. For example, a 45W square-port adapter outputs a square wave signal with a 5% duty cycle, a 65W square-port adapter outputs a 10% duty cycle, a 90W square-port adapter outputs a 15% duty cycle, a 135W square-port adapter outputs a 20% duty cycle, a 170W square-port adapter outputs a 25% duty cycle, a 230W square-port adapter outputs a 30% duty cycle, a 300W square-port adapter outputs a 35% duty cycle, and a 330W square-port adapter outputs a 40% duty cycle. Based on the duty cycle data of the square wave signal, electronic devices can easily identify their model parameters, improving the accuracy of identification.

[0048] In one embodiment of this application, the working principle of the identification circuit is as follows: the adapter is connected to the first power supply through the input port 1 and the output port 2 is connected to the electronic device. The EC (Embedded Controller) of the electronic device detects the presence of the adapter and precharges the energy storage circuit 3 to make it conduct. Then, the pulse circuit 4 connected to the energy storage circuit 3 works and outputs a square wave signal. The EC identifies the duty cycle of the square wave signal to identify the adapter model. At the same time, the square wave signal supplies power to the energy storage circuit 3 to maintain its connection. After the identification is completed, as the power in the energy storage circuit 3 gradually decreases, the energy storage circuit 3 is turned off, and the pulse circuit 4 is turned off accordingly, realizing the intelligent start and stop of the identification circuit and reducing power consumption.

[0049] The first aspect of this application provides an identification circuit, including an input port 1, an output port 2, an energy storage circuit 3, and a pulse circuit 4. The input port 1 is used to connect an adapter to a first power source. The output port 2 is used to connect an electronic device to the adapter. The adapter can convert the first power source to output target power to the electronic device. The energy storage circuit 3 is disposed between the input port 1 and the output port 2 and can obtain electrical energy from the output port 2. The pulse circuit 4 is connected to the energy storage circuit 3 and the output port 2, and can respond to the electrical energy provided by the energy storage circuit 3 by outputting a square wave signal to the electronic device through the output port 2. This application generates a square wave signal that can be recognized by the electronic device by responding to the electrical energy provided by the energy storage circuit 3 through the pulse circuit 4. This signal is unaffected by the voltage ripple of the electronic device's motherboard and the accuracy of the series resistor. Compared to the traditional method of directly using physical connection points for voltage value identification, this method is more resistant to external noise or other electrical interference, improving the accuracy of the electronic device's adapter identification. The application of this application solves the technical problem of existing adapter identification methods being susceptible to numerous interference factors, affecting the accuracy of identification.

[0050] like Figure 1 As shown, in some embodiments, the energy storage circuit 3 includes a switching unit 31 and a first capacitor element 32; the switching unit 31 is connected to the input port 1 and has a target voltage threshold; the first capacitor element 32 is connected to the switching unit 31 and the output port 2, and the first capacitor element 32 can obtain electrical energy from the output port 2. When the switching unit 31 applies a voltage greater than the target voltage threshold to the first capacitor element 32, it can conduct the path between the energy storage circuit 3 and the pulse circuit 4, so that the energy storage circuit 3 provides electrical energy to the pulse circuit 4.

[0051] Specifically, the energy storage circuit 3 of this application includes a first capacitor element 32, which can store electrical energy from the output port 2 so that the electronic device can precharge the energy storage circuit 3 in the newly inserted adapter and can be responded to by the pulse circuit 4 to output a square wave signal for the adapter. The first capacitor element 32 is connected to the switching unit 31. Utilizing the charging and discharging characteristics of the first capacitor element 32, when the first capacitor element 32 discharges to the switching unit 31 in the energy storage circuit 3, the real-time voltage of the switching unit 31 continuously increases. When the switching unit 31 applies a voltage greater than the target voltage threshold to the first capacitor element 32, it can conduct the path between the energy storage circuit 3 and the pulse circuit 4 so that the energy storage circuit 3 provides electrical energy to the pulse circuit 4, thereby enabling the pulse circuit 4 to meet the conditions for starting operation and generate a square wave signal that can be recognized by the electronic device.

[0052] The square wave signal can also power the first capacitor element 32 to continuously support the connection between the energy storage circuit 3 and the pulse circuit 4. As the electrical energy stored in the first capacitor element 32 gradually decreases, the square wave signal attenuates, and the real-time voltage of the switching unit 31 drops. When the voltage drops below the target voltage threshold, the switching unit 31 turns off, the pulse circuit 4 stops working, and no longer generates a square wave signal, thereby realizing the dynamic start and stop of the identification circuit, reducing unnecessary energy consumption, and saving power.

[0053] In some embodiments, the first capacitor element 32 can obtain electrical energy from the electronic device from the output port 2, and the switching unit 31 can disconnect the path between the energy storage circuit 3 and the pulse circuit 4 when the voltage applied to the first capacitor element 32 is less than the target voltage threshold.

[0054] Specifically, this application enables the first capacitor element 32 to obtain electrical energy from the electronic device through the output port 2, allowing the switching unit 31 to be turned on, thereby meeting the adapter identification requirements. The energy storage circuit 3 powers the first capacitor element 32 with the square wave signal generated by the pulse circuit 4, maintaining the square wave signal generation for a certain period of time so that the electronic device can identify the adapter model based on the signal attribute identifier. In the identification circuit, the first capacitor element 32 can store energy under low load and release energy under high load, optimizing energy utilization efficiency. As the electrical energy stored in the first capacitor element 32 gradually decreases, the real-time voltage of the switching unit 31 decreases along with the attenuation of the square wave signal. When the voltage drops below the target voltage threshold, the switching unit 31 turns off, the first capacitor element 32 stops discharging, the path between the energy storage circuit 3 and the pulse circuit 4 is broken, and the square wave signal stops being emitted, providing a transient response under load changes and avoiding unnecessary energy consumption.

[0055] like Figure 1 As shown, in some embodiments, the pulse circuit 4 includes an integrated circuit element 41, which is connected to the switching unit 31 and the output port 2, and is used to generate a square wave signal when the switching unit 31 is turned on.

[0056] Specifically, to improve the accuracy of adapter identification, this application utilizes integrated circuit element 41 to respond to the electrical energy of energy storage circuit 3 and generate a square wave signal. This allows electronic devices to identify the adapter's attribute by reading various parameters of the square wave signal, such as duty cycle, frequency, amplitude, pulse width modulation, encoding, and phase. This avoids interference caused by motherboard voltage ripple and series resistor accuracy issues in traditional methods. Furthermore, the method by which integrated circuit element 41 generates square wave signals is more resistant to external noise or other electrical interference compared to the traditional method of directly using physical connection points for voltage value identification, thereby improving identification accuracy. Integrated circuit element 41 can be an IC (Integrated Circuit), a crystal oscillator, or a timer module. By configuring timer parameters, it generates a square wave signal with a specific frequency and duty cycle; the specific configuration is not limited.

[0057] like Figure 1 As shown, in some embodiments, the pulse circuit 4 further includes an adjustment component 42 connected to the integrated circuit element 41. The adjustment component 42 includes at least one resistor 421 and at least one second capacitor element 422, which are used to adjust the frequency and duty cycle of the square wave signal.

[0058] Specifically, to improve the accuracy of adapter identification by electronic devices, the pulse circuit 4 of this application further includes an adjustment component 42, which includes at least one resistor 421 and at least one second capacitor element 422. By adjusting the resistance value of the resistor 421 and the capacitance value of the second capacitor element 422, the frequency of the square wave signal can be changed. For example, for electronic devices in low-frequency noise environments, adjusting the square wave signal to a higher frequency can ensure the accuracy of adapter identification and avoid environmental noise interference. Furthermore, under different temperature conditions or when the first power supply connected to input port 1 fluctuates, the generation of the square wave signal can be adjusted in real time by adjusting the resistance and capacitance values. This ensures that the electronic device can accurately identify the adapter and perform efficient power transmission through matched operating parameters, guaranteeing the performance of the electronic device and improving the user experience.

[0059] Furthermore, changing the duty cycle of the square wave signal can improve the energy distribution of the square wave signal, so that even if the square wave signal is interfered with, the electronic device can still obtain enough information to identify the attribute identifier. In addition, appropriately adjusting the resistance and capacitance values ​​can optimize the amplitude of the square wave signal, so that it maintains sufficient strength during transmission, has a higher signal-to-noise ratio, reduces the bit error rate, and improves the accuracy of identification.

[0060] like Figure 1As shown, in some embodiments, the output port 2 is provided with an identification pin 21, which is connected to the energy storage circuit 3 and the pulse circuit 4. The identification pin 21 is used by the electronic device to provide power to the energy storage circuit 3 and to output a square wave signal to the electronic device.

[0061] Specifically, in order to achieve efficient and accurate power supply, support bidirectional power interaction, and improve the accuracy of adapter identification, the output port 2 of this application is provided with an identification pin 21. The identification pin 21 is connected to the energy storage circuit 3 and the pulse circuit 4. The identification pin 21 allows the electronic device to precharge the energy storage circuit 3 to provide power. At this time, the identification pin 21 is occupied for a certain period of time by the precharging process. When the pulse circuit 4 can respond to the power of the energy storage circuit 3, it outputs a square wave signal. At this time, the identification pin 21 serves as an information transmission channel, which can accurately transmit the square wave signal to the electronic device for subsequent identification work, so that the electronic device can accurately identify the adapter according to the attribute identifier represented by the square wave signal.

[0062] Furthermore, the identification pin 21 not only helps the electronic device identify the adapter, but also enables the adapter to identify the type of device inserted, thereby helping to determine the feasibility and parameter conditions for data transmission to the electronic device. Moreover, in the output port 2 that can satisfy both positive and negative insertion, the identification pin 21 can also detect the insertion direction of the electronic device and negotiate power supply capabilities between the adapter and the electronic device, providing a variety of functional extensions to meet different user needs.

[0063] Example 2

[0064] A second aspect of this application provides an adapter, including an adapter body and an identification circuit disposed on the adapter body. The identification circuit includes an input port 1, an output port 2, an energy storage circuit 3, and a pulse circuit 4. The input port 1 is used to connect the adapter to a first power source. The output port 2 is used to connect the adapter to an electronic device. The adapter can convert the first power source to output target power to the electronic device. The energy storage circuit 3 is disposed between the input port 1 and the output port 2 and can obtain electrical energy from the output port 2. The pulse circuit 4 is connected to the energy storage circuit 3 and the output port 2 and can respond to the electrical energy provided by the energy storage circuit 3 by outputting a square wave signal to the electronic device through the output port 2.

[0065] For details on the specific features of the identification circuit, please refer to Example 1, which will not be repeated here.

[0066] A second aspect of this application provides an adapter, including an adapter body and an identification circuit disposed on the adapter body. The identification circuit includes an input port 1, an output port 2, an energy storage circuit 3, and a pulse circuit 4. The input port 1 is used to connect the adapter to a first power source. The output port 2 is used to connect the adapter to an electronic device. The adapter can convert the first power source to output target power to the electronic device. The energy storage circuit 3 is disposed between the input port 1 and the output port 2 and can obtain electrical energy from the output port 2. The pulse circuit 4 is connected to the energy storage circuit 3 and the output port 2, and can respond to the electrical energy provided by the energy storage circuit 3 by outputting a square wave signal to the electronic device through the output port 2. This application generates a square wave signal that can be recognized by the electronic device by responding to the electrical energy provided by the energy storage circuit 3 through the pulse circuit 4. This is unaffected by the voltage ripple of the electronic device's motherboard and the accuracy of the series resistor. Compared with the traditional method of directly using physical connection points for voltage value identification, it is more resistant to external noise or other electrical interference, improving the accuracy of the electronic device's identification of the adapter. The application of this application solves the technical problem of existing technologies identifying adapters, which are subject to many interference factors, affecting the accuracy of identification.

[0067] In some embodiments, the system further includes a filter circuit disposed between the output port 2 and the pulse circuit 4, for filtering the square wave signal.

[0068] Specifically, in order to improve the accuracy of the electronic device in identifying the adapter model, this application also includes a filtering circuit to filter the square wave signal output by the pulse circuit 4, effectively removing noise and fluctuations, thereby reducing external electrical interference factors such as voltage ripple and noise that interfere with the transmission of the square wave signal, and thus improving the accuracy of adapter identification.

[0069] Example 3

[0070] A third aspect of this application provides an electronic device, including a controller and a power supply adapter. The adapter includes an identification circuit, which comprises an input port 1, an output port 2, an energy storage circuit 3, and a pulse circuit 4. The input port 1 is used to connect the adapter to a first power source. The output port 2 is used to connect the adapter to an electronic device. The adapter can convert the first power source to output target power to the electronic device. The energy storage circuit 3 is disposed between the input port 1 and the output port 2 and can obtain electrical energy from the output port 2. The pulse circuit 4 is connected to the energy storage circuit 3 and the output port 2 and can respond to the electrical energy provided by the energy storage circuit 3 by outputting a square wave signal to the electronic device through the output port 2. The controller can identify the attribute identifier of the adapter based on the square wave signal, and control the operating parameters of the adapter and / or output target prompt information based on the attribute identifier.

[0071] For details on the specific features of the adapter, please refer to Implementation 2; they will not be repeated here.

[0072] A third aspect of this application provides an electronic device including a controller and a power adapter. The adapter includes an identification circuit comprising an input port 1, an output port 2, an energy storage circuit 3, and a pulse circuit 4. The input port 1 is used to connect the adapter to a first power source. The output port 2 is used to connect the adapter to the electronic device. The adapter can convert the first power source to output target power to the electronic device. The energy storage circuit 3 is disposed between the input port 1 and the output port 2 and can obtain electrical energy from the output port 2. The pulse circuit 4 is connected to the energy storage circuit 3 and the output port 2 and can respond to the electrical energy provided by the energy storage circuit 3 by outputting a square wave signal to the electronic device through the output port 2. The controller can identify the attribute identifier of the adapter based on the square wave signal and control the operating parameters of the adapter and / or output target prompt information based on the attribute identifier. This application generates a square wave signal that can be recognized by the electronic device by responding to the electrical energy provided by the energy storage circuit 3 through the pulse circuit 4. This is unaffected by the voltage ripple of the electronic device's motherboard and the accuracy of the series resistor. Compared with the traditional method of directly using physical connection points for voltage value identification, it is more resistant to external noise or other electrical interference, thus improving the accuracy of the electronic device's identification of the adapter. Furthermore, the controller can identify the adapter's attribute identifier based on the square wave signal, control the adapter's operating parameters to improve the efficiency of power supply to the electronic device, or output target information to inform the user, thereby improving the safety and user experience during the use of the electronic device. This application solves the technical problem of existing adapter identification technologies being susceptible to numerous interference factors, affecting the accuracy of identification.

[0073] In some embodiments, the controller can control the adapter to provide power input according to the operating parameters matching the target identifier if the attribute identifier matches the target identifier; and / or, if the attribute identifier does not match any identifier in the preset identifier library, output a prompt message indicating that the adapter has failed target authentication.

[0074] Specifically, to improve power transmission efficiency and ensure that electronic equipment operates in optimal condition, this application uses a controller to control the adapter to provide power input according to the operating parameters matched by the target identifier when the attribute identifier matches the target identifier, thus providing the most suitable power transmission effect. Furthermore, the electronic equipment in this application also has a preset identifier library. If the detected attribute identifier does not match any identifier in the preset identifier library, the controller will trigger a warning mechanism, displaying a message such as "Adapter failed target authentication" to the user, effectively preventing the user from misusing uncertified or incompatible adapters and reducing safety hazards caused by power supply problems. In this application, the controller can be an EC (Embedded Controller), microcontroller, DSP (Digital Signal Processor), PLC (Programmable Logic Controller), etc., and is not limited to any specific type.

[0075] The embodiments of this disclosure have now been described in detail. To avoid obscuring the concept of this disclosure, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0076] While specific embodiments of this disclosure have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of this disclosure. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of this disclosure. In particular, as long as there is no structural conflict, the technical features mentioned in the various embodiments can be combined in any manner.

Claims

1. An identification circuit applied to an adapter, characterized in that, include: An input port is used to connect the adapter to a first power source. An output port is provided for connecting an electronic device to which the adapter is connected. The adapter is capable of converting the first power supply to output target power to the electronic device. An energy storage circuit is disposed between the input port and the output port, and is able to obtain electrical energy from the output port; A pulse circuit, connected to the energy storage circuit and the output port, is capable of responding to the electrical energy provided by the energy storage circuit and outputting a square wave signal to the electronic device through the output port.

2. The identification circuit according to claim 1, characterized in that, The energy storage circuit includes a switching unit and a first capacitor element; The switching unit is connected to the input port and has a target voltage threshold. The first capacitor element is connected to the switching unit and the output port. The first capacitor element can obtain electrical energy from the output port. The switching unit can conduct the path between the energy storage circuit and the pulse circuit when the first capacitor element is subjected to a voltage greater than the target voltage threshold, so that the energy storage circuit provides electrical energy to the pulse circuit.

3. The identification circuit according to claim 2, characterized in that, The first capacitor element can obtain electrical energy from the electronic device from the output port, and the switching unit can disconnect the path between the energy storage circuit and the pulse circuit when the voltage applied to the first capacitor element is less than the target voltage threshold.

4. The identification circuit according to claim 2 or 3, characterized in that, The pulse circuit includes an integrated circuit element connected to the switching unit and the output port, and is used to generate the square wave signal when the switching unit is turned on.

5. The identification circuit according to claim 4, characterized in that, The pulse circuit further includes an adjustment component connected to the integrated circuit element. The adjustment component includes at least one resistor and at least one second capacitor element, which are used to adjust the frequency and duty cycle of the square wave signal.

6. The identification circuit according to claim 1, characterized in that, The output port is provided with an identification pin, which is connected to the energy storage circuit and the pulse circuit. The identification pin is used by the electronic device to provide power to the energy storage circuit and to output the square wave signal to the electronic device.

7. An adapter, characterized in that, Includes an adapter body and an identification circuit disposed on the adapter body, wherein the identification circuit includes: An input port is used to connect the adapter to a first power source. An output port is provided for connecting an electronic device to which the adapter is connected. The adapter is capable of converting the first power supply to output target power to the electronic device. An energy storage circuit is disposed between the input port and the output port, and is able to obtain electrical energy from the output port; A pulse circuit, connected to the energy storage circuit and the output port, is capable of responding to the electrical energy provided by the energy storage circuit and outputting a square wave signal to the electronic device through the output port.

8. The adapter according to claim 7, characterized in that, Also includes: A filtering circuit is provided, which is disposed between the output port and the pulse circuit, for filtering the square wave signal.

9. An electronic device, characterized in that, It includes a controller and a power supply adapter, the adapter including an identification circuit, the identification circuit including: An input port is used to connect the adapter to a first power source. An output port is provided for connecting an electronic device to which the adapter is connected. The adapter is capable of converting the first power supply to output target power to the electronic device. An energy storage circuit is disposed between the input port and the output port, and is able to obtain electrical energy from the output port; A pulse circuit, connected to the energy storage circuit and the output port, is capable of responding to the electrical energy provided by the energy storage circuit and outputting a square wave signal to the electronic device through the output port. The controller can identify the attribute identifier of the adapter based on the square wave signal, and control the operating parameters of the adapter and / or output target prompt information based on the attribute identifier.

10. The electronic device according to claim 9, characterized in that, The controller is capable of controlling the adapter to provide power input according to the operating parameters matched by the target identifier when the attribute identifier matches the target identifier; And / or, If the attribute identifier does not match any identifier in the preset identifier library, a prompt message indicating that the adapter has failed the target authentication will be output.

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