Power management module, electronic equipment and detection device

Abstract

The invention discloses a power management module, electronic equipment and a detection device. The power management module comprises a main board and a power board; a power supply unit and a first modulation circuit are arranged on the power panel; the power panel comprises a power pin; the power supply unit is electrically connected with the first modulation circuit; the first modulation circuit is electrically connected with the power supply pin; the first modulation circuit is used for acquiring a first signal of the power supply unit, modulating the first signal into a second signal and transmitting the second signal to the power supply pin; a control unit and a first demodulation circuit are arranged on the main board; the control unit is electrically connected with the first demodulation circuit; the power supply pin is electrically connected with the first demodulation circuit through a power line; the first demodulation circuit is used for demodulating a second signal transmitted by the power supply pin into a first signal and then transmitting the first signal to the control unit. The problem that the number of connector pins between the power panel and the controller is large can be solved.

Description

Technical Field

[0001] This application relates to the field of servers, and particularly to a power management module, an electronic device, and a detection device. Background Art

[0002] In devices such as servers, there is signal interaction between the power supply unit and the controller. For the convenience of management, there are some sideband single-ended signals between the power supply unit and the controller. For example, the presence signal, the alarm signal, the DC power supply normal signal, the AC power supply normal signal, etc. In addition, there are also bus signals for external communication. These signals are usually directly or indirectly connected to the controller.

[0003] There are a large number of sideband single-ended signals between the power supply unit and the controller. In addition to providing 12V and 3.3V power supply signals to the controller through the power supply board, it is also necessary to provide signals such as presence, alarm, DC output stability indication, AC input stability indication, I2C bus signal, etc. to the controller. These signals occupy a large number of pins, resulting in a large number of connector pins between the power supply board and the controller, causing resource waste and cost increase. Summary of the Invention

[0004] This application provides a power management module, an electronic device, and a detection device to solve the problem of a large number of connector pins between the power supply board and the controller.

[0005] In a first aspect, this application provides a power management module, including: A main board; A power supply board; A power supply unit and a first modulation circuit are provided on the power supply board; the power supply board includes power supply pins; The power supply unit is electrically connected to the first modulation circuit; the first modulation circuit is electrically connected to the power supply pins; the first modulation circuit is used to obtain a first signal of the power supply unit and modulate the first signal into a second signal and then transmit it to the power supply pins; A control unit and a first demodulation circuit are provided on the main board; the control unit is electrically connected to the first demodulation circuit; the power supply pins are electrically connected to the first demodulation circuit through a power line; the first demodulation circuit is used to demodulate the second signal transmitted by the power supply pins into the first signal and then transmit it to the control unit.

[0006] In a second aspect, this application further provides an electronic device, including the power management module in the first aspect.

[0007] In a third aspect, this application further provides a detection device applicable to the power management module in the first aspect, the detection device includes: a second demodulation circuit; After the detection device is connected to the AC live wire and the AC neutral wire, the third signal is parsed into a bus signal through the second demodulation circuit.

[0008] The power management module provided in this application includes a main board and a power board. A power supply unit and a first modulation circuit are provided on the power board. The power board includes power pins, the power supply unit is electrically connected to the first modulation circuit, and the first modulation circuit is electrically connected to the power pins. The first modulation circuit is configured to obtain a first signal of the power supply unit, modulate the first signal into a second signal, and then transmit the second signal to the power pins. A control unit and a first demodulation circuit are provided on the main board, the control unit is electrically connected to the first demodulation circuit, the power pins are electrically connected to the first demodulation circuit through a power line, and the first demodulation circuit is configured to demodulate the second signal transmitted by the power pins into a first signal and then transmit the first signal to the control unit. In this application, the power supply unit continuously monitors its own working state and generates various low-speed control signals (i.e., the first signal). The first modulation circuit real-time obtains these first signals, modulates them into a second signal according to a preset modulation rule, and transmits the second signal to the first demodulation circuit on the main board through the power pins and the power line. After receiving the second signal, the first demodulation circuit demodulates it, restores the original first signal, and transmits these signals to the control unit. The control unit determines the working state of the power supply unit according to the received signals, such as whether an alarm occurs, whether the power supply is normal, etc., and makes corresponding control decisions accordingly, such as sending an alarm prompt, adjusting the power output, etc. Compared with the traditional solution in which each low-speed control signal between the power board and the controller requires a separate pin for connection, the power management module in this application modulates multiple low-speed control signals into a second signal for transmission through the first modulation circuit, and only needs to complete signal transmission through the power pins and the power line, which greatly reduces the number of pins required for the connector between the power board and the main board. Brief Description of the Drawings

[0009] In order to more clearly illustrate the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0010] Figure 1 It is a schematic structural diagram of a power management module provided in an embodiment of the present application; Figure 2 It is a partial schematic structural diagram of a power management module provided in an embodiment of the present application; Figure 3 It is a schematic structural diagram of a first modulation circuit provided in an embodiment of the present application; Figure 4Another partial structural schematic diagram of the power management module provided by the embodiment of the present application; Figure 5 Structural schematic diagram of another power management module provided by the embodiment of the present application; Figure 6 Another partial structural schematic diagram of the power management module provided by the embodiment of the present application; Figure 7 Structural schematic diagram of a server provided by the embodiment of the present application. Specific embodiments

[0011] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0012] It should be noted that in the description of the present application, the terms "including", "comprising" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. The terms "first", "second", etc. in the present application are used to distinguish similar objects, rather than to describe a specific order or sequence.

[0013] In order to enable those skilled in the art of the present technology to better understand the solution of the present application, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0014] In the power management system of electronic devices such as servers, the signal interaction between the power supply unit and the controller is a key link to achieve the stable operation and effective management of the device. To achieve convenient control of the power supply unit, a series of sideband single-ended signals are configured between the two, including the presence signal and alarm signal for characterizing the working state of the power supply unit, as well as the DC power supply normal signal and AC power supply normal signal for feedback the power supply state, etc. In addition, to meet the communication requirements with external devices, bus signals such as I2C bus signals are also set. The above signals are all connected to the controller directly or indirectly, so that the controller can obtain the working information of the power supply unit in real time and perform corresponding control.

[0015] However, the current technology has obvious defects. There are a variety of sideband single-ended signals between the power supply unit and the controller. Besides the 12V and 3.3V power supply signals transmitted from the power supply unit to the controller, in-position signals, alarm signals, DC output stability indication signals, AC input stability indication signals, and I2C bus signals, etc. all require independent transmission channels. This leads to the connector between the power supply board and the controller having to be configured with a large number of pins, which not only makes the connector design complex and the size increase, resulting in an increase in raw material and manufacturing costs, but also makes the internal wiring of the device more cumbersome, increasing the assembly difficulty and the probability of errors. At the same time, the use of a large number of pins also occupies the limited signal access resources of the controller, restricting the expansion and optimization of system functions, reducing the overall resource utilization efficiency, and becoming an important factor restricting the performance improvement of the power management system.

[0016] In view of the above problems, the embodiment of the present application provides a power management module, Figure 1 which is a schematic structural diagram of a power management module provided by the embodiment of the present application. As Figure 1 shown, the power management module provided by the present application includes a main board 10 and a power supply board 20.

[0017] In terms of the power supply board, a power supply unit 21 and a first modulation circuit 22 are provided thereon. The power supply unit 21 is the core component for the entire power supply board to achieve the power supply function. The power supply board includes power supply pins 211 for realizing electrical connection with the outside and providing power outputs such as 12V and 3.3V for the system. The power supply unit 21 and the first modulation circuit 22 are electrically connected through electrical lines, and this connection method ensures stable signal transmission between the two. The first modulation circuit 22 is also electrically connected to the power supply pins through electrical lines, and its main function is to obtain the first signal generated by the power supply unit 21. Here, the first signal includes various low-speed control signals such as in-position signals, alarm signals, DC power normal signals, AC power normal signals, and bus signals. The first modulation circuit 22 will perform modulation processing on these first signals. Through specific modulation techniques, such as frequency modulation, amplitude modulation, etc., it integrates and modulates various low-speed control signals into a second signal that is convenient for transmission, and then transmits the second signal to the power supply pins.

[0018] On the main board 10, a control unit 11 and a first demodulation circuit 12 are provided. As a key part of the main board to implement the system control function, the control unit 11 is electrically connected to the first demodulation circuit 12 through electrical lines to achieve data interaction between the two. The power supply pin is electrically connected to the first demodulation circuit 12 through a power line, and the power line provides a stable physical channel for the transmission of the second signal. The function of the first demodulation circuit 12 is to demodulate the second signal transmitted through the power line by the power supply pin 211, use the demodulation technology corresponding to modulation to restore the second signal to the original first signal, and then transmit the first signal to the control unit 11, so that the control unit 11 can obtain various state information of the power supply unit 21, thereby realizing the effective management and control of the power supply system.

[0019] During the actual working process, the power supply unit 21 continuously monitors its own working state and generates various low-speed control signals (i.e., the first signals). The first modulation circuit 22 obtains these first signals in real time, modulates them into second signals according to the preset modulation rules, and transmits them to the first demodulation circuit 12 on the main board 10 through the power supply pin 211 and the power line. After receiving the second signal, the first demodulation circuit 12 demodulates it, restores the original first signal, and transmits these signals to the control unit 11. The control unit 11 judges the working state of the power supply unit according to the received signals, such as whether an alarm occurs, whether the power supply is normal, etc., and makes corresponding control decisions accordingly, such as sending an alarm prompt, adjusting the power output, etc.

[0020] In the above power management module provided by this application, compared with the traditional solution where each low-speed control signal between the power supply unit and the controller needs to be connected by a separate pin, in this embodiment, the power management module modulates multiple low-speed control signals into one second signal for transmission through the first modulation circuit, and only needs to complete signal transmission through the power supply pin and the power line. This greatly reduces the number of pins required for the connector between the power supply board and the main board. For example, originally dozens of pins might be required to transmit various low-speed control signals. After adopting this solution, the number of pins can be significantly reduced, thereby reducing the design complexity and manufacturing cost of the connector and effectively avoiding resource waste.

[0021] For machines with high power consumption and using multiple power supply units, in the traditional solution, numerous low-speed control signals of each power supply unit will occupy the limited input and output pin resources of the logic devices on the board. In this power management module, however, since multiple low-speed control signals are integrated and modulated for transmission, the number of signals transmitted between each power supply board and the main board is significantly reduced. Correspondingly, the occupation of the input and output pin resources of the logic devices is also significantly reduced. This enables these logic devices to use more input and output pin resources for other important functions, improving the resource utilization rate of the logic devices and enhancing the overall performance and scalability of the system.

[0022] In the embodiments of the present application, the low-speed control signal is processed through modulation and demodulation techniques, which can reduce the interference suffered by the signal during transmission to a certain extent. The modulation process can encode and enhance the signal, enabling the signal to have better anti-interference ability when transmitted in the power line; the demodulation process can accurately restore the original signal to ensure that the signal obtained by the control unit is accurate. This method improves the stability and reliability of signal transmission in the power management module, ensuring the stable operation of the power system and the entire device.

[0023] In some alternative embodiments, the power pins include a first power pin and a second power pin, and the first modulation circuit includes a first end and a second end. The first end is electrically connected to the first power pin, and the second end is electrically connected to the second power pin. The first demodulation circuit includes a third end and a fourth end. The third end is electrically connected to the first power pin through a first power line, and the fourth end is electrically connected to the second power pin through a second power line.

[0024] In this embodiment, the power pins on the power board of the power management module are divided into a first power pin and a second power pin. Specifically, the first power pin is, for example, a 12V power pin, which is mainly responsible for providing 12V power support for the system; the second power pin is, for example, a 3.3V power pin, which mainly provides a 3.3V power output. These two power pins are the core interfaces for the power board to interact with the main board. They not only undertake the function of transmitting the power output by the power unit but also are responsible for transmitting the modulated control signal. They are the "bridge" for the data and energy flow between the power board and the main board.

[0025] The first modulation circuit on the power board is provided with a first end and a second end. The first end is electrically connected to the first power pin through an electrical circuit, and the second end is also electrically connected to the second power pin through an electrical circuit. This connection method enables the first modulation circuit to accurately transmit the processed signal to the corresponding power pin. The first demodulation circuit on the main board is provided with a third end and a fourth end. Among them, the third end is electrically connected to the first power pin through a first power line, and the fourth end is electrically connected to the second power pin through a second power line.

[0026] The first modulation circuit is provided with a first terminal and a second terminal. The first terminal is tightly connected to the first power supply pin (12V power supply pin) through an electrical line, and the second terminal is electrically connected to the second power supply pin (3.3V power supply pin). When the power supply unit generates various low-speed control signals such as the in-position signal, alarm signal, DC power supply normal signal, AC power supply normal signal, and I2C bus signal (i.e., the first signal), the first modulation circuit will modulate these first signals according to the preset signal processing rules. Specifically, the modulated second signal is generally a sine wave signal, which is divided into a clock part and a data part, and thus is output through the first terminal and the second terminal of the first modulation circuit respectively. For example, the sine wave signal of the clock part is output from the first terminal and transmitted through the first power supply pin (12V power supply pin); the sine wave signal of the data part is output from the second terminal and transmitted through the second power supply pin (3.3V power supply pin), thereby realizing the classified transmission of signals.

[0027] The first demodulation circuit on the main board includes a third terminal and a fourth terminal. The third terminal is connected to the first power supply pin (12V power supply pin) through the first power line, and the fourth terminal is connected to the second power supply pin (3.3V power supply pin) through the second power line. The first power line and the second power line, as the physical media for signal transmission, have good electrical performance, which can ensure the stability of the second signal during transmission, reduce signal attenuation and interference, and ensure that the second signal can be accurately transmitted from the power supply pin to the third terminal and the fourth terminal of the first demodulation circuit. After receiving the second signal, the first demodulation circuit will use the corresponding demodulation technology to restore the second signal to the original first signal and transmit it to the control unit, providing an accurate signal basis for the control unit to monitor and manage the power supply system.

[0028] During the operation of the power management module, the power supply unit is in a continuous working state, constantly generating various low-speed control signals. The first modulation circuit monitors and obtains these first signals in real time, and classifies and modulates the signals according to the preset modulation strategy. Specifically, the low-speed control signals to be transmitted are modulated into a sine wave form of the second signal, which is divided into a clock part and a data part. Among them, the sine wave signal of the clock part is output from the first terminal of the first modulation circuit and transmitted through the first power supply pin (12V power supply pin) and the first power line to the third terminal of the first demodulation circuit; the sine wave signal of the data part is output from the second terminal of the first modulation circuit and transmitted through the second power supply pin (3.3V power supply pin) and the second power line to the fourth terminal of the first demodulation circuit.

[0029] After the third terminal and the fourth terminal of the first demodulation circuit receive the corresponding second signals, the demodulation program is started. Through a specific demodulation algorithm, the sine wave signals of the clock part and the data part are respectively demodulated, restored to the original first signals, and these signals are transmitted to the control unit. The control unit analyzes and judges the working state of the power supply unit in real time according to the received signals, such as judging whether the power supply fails, whether it is in the normal working mode, etc., and makes corresponding control decisions according to the judgment results, such as issuing an alarm instruction, adjusting the power output parameters, etc., so as to realize the effective management of the power supply system.

[0030] In some alternative embodiments, the first modulation circuit includes a first inductor, a second inductor, a first capacitor, and a second capacitor. The first inductor is connected in series between the power supply unit and the first power supply pin, and the second inductor is connected in series between the power supply unit and the second power supply pin. The first capacitor is connected in series between the first terminal and the first power supply pin, and the second capacitor is connected in series between the second terminal and the second power supply pin.

[0031] Figure 2 This is a schematic diagram of a partial structure of a power management module provided by an embodiment of the present application. As Figure 2 shown, in the embodiment of the present application, the power management module further includes a first inductor L1, a second inductor L2, a first capacitor C1, and a second capacitor C2. Each component forms a signal processing network through a specific connection method: First inductor L1: Connected in series between the power supply unit 21 and the first power supply pin 2111 (such as a 12V power supply pin). Its function is to suppress high-frequency interference signals and at the same time allow the DC power supply signal to pass through smoothly, ensuring the stability of the power supply output.

[0032] Second inductor L2: Connected in series between the power supply unit 21 and the second power supply pin 2112 (such as a 3.3V power supply pin). Its function is similar to that of the first inductor L1, providing filtering and stabilization for the 3.3V power supply line.

[0033] First capacitor C1: Connected in series between the first terminal of the first modulation circuit 22 and the first power supply pin 2111. This capacitor is used to couple the modulated sine wave signal (such as the clock part), so that it can be superimposed on the 12V DC power supply for transmission, and at the same time isolate the DC component to avoid affecting the modulation circuit.

[0034] Second capacitor C2: Connected in series between the second terminal of the first modulation circuit 22 and the second power supply pin 2112. Its function is similar to that of the first capacitor C1, and it is responsible for coupling the sine wave signal of the data part to the 3.3V power supply line.

[0035] In the embodiments of the present application, the 12V and 3.3V DC power supplies output by the power supply unit are filtered by L1 and L2 respectively and then delivered to the corresponding power pins. The inductive elements effectively suppress the high-frequency noise in the power supply and ensure the power quality.

[0036] The first modulation circuit modulates the low-speed control signals (such as the presence signal, alarm signal, etc.) into a sine wave form and divides them into a clock part and a data part. The clock part is coupled to the 12V power line through C1, and the data part is coupled to the 3.3V power line through C2. The characteristics of the capacitive elements enable them to pass the AC signal (modulation wave) while blocking the DC component, realizing the superimposed transmission of signals. The modulated sine wave signal is mixed with the DC power supply and transmitted to the main board on the power line.

[0037] The presence of the first inductor L1 and the second inductor L2 effectively suppresses the high-frequency interference in the power line and reduces the impact of power fluctuations on the load. For example, when the output current of the power supply unit changes, the back electromotive force generated by the inductor can smooth the current change and make the output voltage more stable. The first capacitor C1 and the second capacitor C2 achieve the efficient coupling of the modulation signal and the power supply, enabling the sine wave signal to be superimposed on the power line without loss. The capacitance value of the capacitor can be optimized according to the frequency characteristics of the modulation signal to ensure the bandwidth and fidelity of signal transmission. The network composed of the inductor and the capacitor has an impedance matching effect on the modulation signal of a specific frequency, reducing the reflection and attenuation of the signal during transmission and improving the transmission distance and reliability of the signal.

[0038] In some alternative embodiments, the first modulation circuit includes a signal conversion module, a first voltage-frequency conversion module, and a second voltage-frequency conversion module. The signal conversion module obtains the sideband single-ended signal in the first signal of the power supply unit through the input-output terminal. The clock signal terminal of the signal conversion module is electrically connected to the voltage input terminal of the first voltage-frequency conversion module, and the data signal terminal of the signal conversion module is electrically connected to the voltage input terminal of the second voltage-frequency conversion module. The signal conversion module is used to convert the sideband single-ended signal in the first signal into a bus signal, the first voltage-frequency conversion module is used to modulate the clock signal of the bus signal into a second signal, and the first voltage-frequency conversion module is used to modulate the data signal of the bus signal into a second signal.

[0039] For example Figure 2 As shown, the signal conversion module 221 is connected to the power supply unit 21 through the input-output terminal to obtain the sideband single-ended signal. Figure 2 Exemplarily shown in the figure, the input-output terminals of the signal conversion module 221 include I00, I01, I02, and I03. The signal conversion module 221 converts the sideband single-ended signals (such as the presence signal, alarm signal, AC input signal, AC output signal, etc.) generated by the power supply unit 21 into bus signals.

[0040] The clock signal terminal SCL of the signal conversion module 221 is electrically connected to the voltage input terminal of the first voltage-frequency conversion module 222, and outputs the clock signal part of the bus signal. The data signal terminal SDA of the signal conversion module 221 is electrically connected to the voltage input terminal of the second voltage-frequency conversion module 223, and outputs the data signal part of the bus signal.

[0041] The first voltage-frequency conversion module 222 receives the clock signal part output by the signal conversion module, modulates the clock signal part into a sine wave signal (second signal) with a changing frequency, and outputs it to the first power pin 2111 (such as a 12V power pin) through the first terminal.

[0042] The second voltage-frequency conversion module 223 receives the data signal part output by the signal conversion module, modulates the data signal part into a sine wave signal (second signal) with a changing frequency, and outputs it to the second power pin 2112 (such as a 3.3V power pin) through the second terminal.

[0043] In the embodiment of the present application, the signal conversion module monitors the sideband single-ended signal state of the power supply unit in real time (for example, the high / low level of the in-position signal indicates whether the power supply unit is inserted), and converts the discrete sideband single-ended signal into a bus signal, including a clock signal part (SCL) and a data signal part.

[0044] The first voltage-frequency conversion module modulates the voltage of the clock signal part output by the signal conversion module into a sine wave signal whose frequency changes with the voltage. The second voltage-frequency conversion module modulates the voltage of the data signal part into a sine wave with a changing frequency. For example: modulating the high level "1" into a sine wave of 500MHZ. Modulating the low level "0" into a sine wave of 300MHZ. The modulated clock sine wave is output to the first power pin through the first terminal, and the data sine wave is output to the second power pin through the second terminal, realizing the superimposed transmission of signals on the power line.

[0045] In the embodiment of the present application, the signal conversion module integrates various sideband single-ended signals into a standard bus signal (such as I2C), simplifies the subsequent signal processing logic, and reduces the interface complexity of the control unit. The bus signal protocol (such as I2C) has wide compatibility, which is convenient for integration with different types of control units, and improves the versatility of the power management module. The voltage-frequency conversion technology converts the voltage signal into a frequency signal. Compared with the traditional voltage modulation method, the frequency signal has stronger resistance to power fluctuations and electromagnetic interference. Using the original power lines (such as 12V, 3.3V) to transmit signals simultaneously, there is no need to lay additional signal lines, reducing the wiring complexity and the number of connector pins.

[0046] In addition, the signal conversion module, the first voltage-frequency conversion module, and the second voltage-frequency conversion module can be integrated into a single chip, which can reduce the number of discrete components, lower the circuit complexity, and reduce the area of the printed circuit board.

[0047] In the server power management system, when it is necessary to monitor the status of multiple power supply units simultaneously, each sideband single-ended signal (presence, alarm, etc.) is converted into a bus signal format through the signal conversion module. The clock signal part is modulated onto the power line corresponding to the first power pin through the first voltage-frequency conversion module, and the data signal part is modulated onto the power line corresponding to the second power pin through the second voltage-frequency conversion module. The control unit of the main board receives and analyzes these signals through the first demodulation circuit to achieve centralized monitoring of the status of the power supply units, which can significantly reduce the resource occupancy of the input / output ports of the main board.

[0048] In some alternative embodiments, the first modulation circuit includes a signal conversion module, a multiplexing module, a first voltage-frequency conversion module, and a second voltage-frequency conversion module.

[0049] The signal conversion module obtains the sideband single-ended signal in the first signal of the power supply unit through the input / output terminal. The signal conversion module is used to convert the sideband single-ended signal in the first signal into a bus signal. The clock signal terminal of the signal conversion module is electrically connected to the first clock signal terminal of the multiplexing module, and the data signal terminal of the signal conversion module is electrically connected to the first data signal terminal of the multiplexing module. The second clock signal terminal of the multiplexing module is also used to obtain the clock signal of the bus signal in the first signal, and the second data signal terminal of the multiplexing module is also used to obtain the data signal of the bus signal in the first signal. The multiplexing module is used to convert the bus signal in the first signal and the bus signal converted by the signal conversion module into a group of bus signals.

[0050] The clock signal output terminal of the multiplexing module is electrically connected to the voltage input terminal of the first voltage-frequency conversion module, and the data signal output terminal of the multiplexing module is electrically connected to the voltage input terminal of the second voltage-frequency conversion module. The first voltage-frequency conversion module is used to modulate the clock signal of the bus signal into a second signal, and the first voltage-frequency conversion module is used to modulate the data signal of the bus signal into a second signal.

[0051] Figure 3 FIG. is a schematic structural diagram of a first modulation circuit provided by an embodiment of the present application. In the embodiment of the present application, the first signal transmitted between the power supply unit and the control unit includes a sideband single-ended signal and a bus signal.

[0052] In this embodiment, the first modulation circuit 22 includes a signal conversion module 221, a multiplexing module 224, a first voltage-frequency conversion module 222, and a second voltage-frequency conversion module 223.

[0053] The signal conversion module 221 converts the sideband single-ended signals (such as the in-position signal, alarm signal, etc.) generated by the power supply unit 21 into bus signals (such as I2C format).

[0054] The signal conversion module 221 is connected to the power supply unit 21 through the input / output terminal to collect the sideband single-ended signals. The clock signal terminal SCL of the signal conversion module 221 is electrically connected to the first clock signal terminal SCL1 of the multiplexing module to output the converted bus clock signal. The data signal terminal SDA of the signal conversion module 221 is electrically connected to the first data signal terminal SDA1 of the multiplexing module to output the converted bus data signal. The second clock signal terminal SCL of the multiplexing module 224 directly obtains the bus signal clock of the power supply unit 21. The second data signal terminal SDA of the multiplexing module 224 directly obtains the bus signal data of the power supply unit 21. The multiplexing module 224 integrates the bus signals from two sources (the bus signals converted from sideband single-ended signals + the original bus signals) to form a unified bus signal output. The clock signal output terminal SCL-OUT of the multiplexing module 224 is electrically connected to the voltage input terminal of the first voltage-frequency conversion module 222, and the data signal output terminal SDA-OUT of the multiplexing module 224 is electrically connected to the voltage input terminal of the second voltage-frequency conversion module 223.

[0055] The first voltage-frequency conversion module 222 modulates the multiplexed clock signal into a sine wave with a changing frequency and outputs it to the first power pin (such as a 12V power pin) through the first terminal. The second voltage-frequency conversion module 223 modulates the multiplexed data signal into a sine wave with a changing frequency and outputs it to the second power pin (such as a 3.3V power pin) through the second terminal.

[0056] In the embodiment of the present application, the signal conversion module converts the discrete sideband single-ended signals (such as the high / low levels of the in-position signal) into bus signals in I2C format. The multiplexing module simultaneously receives the original bus signals of the power supply unit (such as SCL / SDA of I2C). The multiplexing module integrates the bus signals from two sources into a unified output according to the preset priority or timing rules, for example, transmitting the two types of signals at different times. The first voltage-frequency conversion module converts the multiplexed clock signal into a sine wave with a changing frequency and superimposes it on the power line corresponding to the first power pin. The second voltage-frequency conversion module converts the multiplexed data signal into a sine wave with a changing frequency and superimposes it on the power line corresponding to the second power pin.

[0057] In the embodiments of the present application, through a multiplexing module, different types of signals (sideband single-ended signals and original bus signals) are integrated into a unified bus protocol, simplifying the interface design of the control unit. Compared with the traditional solution of separately allocating pins for each type of signal, in this embodiment, multiple signals are transmitted by multiplexing the power supply lines, significantly reducing the number of connector pins. The embodiments of the present application are applicable to power supply units that simultaneously include sideband single-ended signals and bus signals. For example, some power supply units provide both discrete signals such as presence and alarm, and output continuous monitoring data such as temperature and current through the I2C bus. This solution can process these two types of signals simultaneously. Through techniques such as time-division multiplexing, the embodiments of the present application can achieve parallel transmission of multiple signals without adding physical lines. For example, data converted from sideband single-ended signals is transmitted during the idle period of the I2C bus, making full use of the bus bandwidth.

[0058] In some alternative embodiments, a third inductor, a fourth inductor, a third capacitor, and a fourth capacitor are further included. The third inductor is connected in series between the first power supply pin and the first power consumption end of the main board, and the fourth inductor is connected in series between the second power supply pin and the second power consumption end of the main board. The third capacitor is connected in series between the first power supply pin and the first input end of the first demodulation circuit, and the fourth capacitor is connected in series between the second power supply pin and the second input end of the first demodulation circuit.

[0059] Figure 4 It is a partial structural schematic diagram of another power management module provided by the embodiments of the present application. As Figure 4 shown, in this embodiment, the power management module further includes a third inductor L3, a fourth inductor L4, a third capacitor C3, and a fourth capacitor C4. Each component forms a signal demodulation and power supply filtering network through a specific connection method.

[0060] The third inductor L3 is connected in series between the first power supply pin (such as the 12V power supply pin) and the first power consumption end VR1 of the main board. Its function is to suppress high-frequency modulation signals while allowing the DC power supply signal to pass through smoothly. The fourth inductor L4 is connected in series between the second power supply pin (such as the 3.3V power supply pin) and the second power consumption end VR2 of the main board. Its function is similar to that of L3, providing filtering and stabilization for the 3.3V power consumption line.

[0061] The third capacitor C3 is connected in series between the first power supply pin and the first input end of the first demodulation circuit. This capacitor is used to couple the modulated sine wave signal (such as the clock part) so that it can be separated from the power supply line, while isolating the DC component to avoid affecting the demodulation circuit. The fourth capacitor C4 is connected in series between the second power supply pin and the second input end of the first demodulation circuit. Its function is similar to that of C3, responsible for separating the sine wave signal of the data part from the 3.3V power supply line.

[0062] When the modulated sine wave signal is mixed with the DC power supply and transmitted to the main board, the third inductor L3 and the fourth inductor L4 present a high impedance to the high-frequency modulated signal, preventing it from flowing to the power consumption end of the main board; while the third capacitor C3 and the fourth capacitor C4 present a low impedance to the high-frequency signal, coupling the modulated signal to the input end of the first demodulation circuit. After receiving the separated sine wave signal, the first demodulation circuit restores it to the original clock signal and data signal through technologies such as frequency detection and phase analysis, and finally transmits it to the control unit for processing.

[0063] In the embodiment of the present application, through the combination of L3, C3, L4, and C4, the efficient separation of the modulated signal and the DC power supply is achieved, ensuring that the demodulation circuit can accurately obtain the original modulated signal and improving the demodulation accuracy. The coupling characteristic of the capacitor enables the modulated signal to be transmitted from the power supply line to the demodulation circuit with lower loss, reducing signal attenuation and ensuring signal integrity.

[0064] In some alternative embodiments, the first demodulation circuit includes a first frequency-voltage conversion module and a second frequency-voltage conversion module. The voltage input terminal of the first frequency-voltage conversion module is connected to the first power supply pin, and the voltage input terminal of the second frequency-voltage conversion module is connected to the second power supply pin. The first frequency-voltage conversion module is used to demodulate the second signal into the clock signal of the bus signal, and the second frequency-voltage conversion module is used to demodulate the second signal into the data signal of the bus signal.

[0065] In the power management module of this embodiment, the first demodulation circuit 12 includes a first frequency-voltage conversion module 121 and a second frequency-voltage conversion module 122. These two modules are the core components for signal demodulation. The voltage input terminal of the first frequency-voltage conversion module 121 is connected to the first power supply pin 2111 (such as the 12V power supply pin) through an electrical circuit. The first power supply pin transmits the second signal (generally the clock part of the sine wave signal) modulated by the first modulation circuit and superimposed on the 12V power supply. The main function of the first frequency-voltage conversion module 121 is to demodulate the received second signal and restore the clock signal of the bus signal.

[0066] The voltage input terminal of the second frequency-voltage conversion module 122 is connected to the second power supply pin 2112 (such as the 3.3V power supply pin) through an electrical circuit. The second power supply pin transmits the second signal (generally the data part of the sine wave signal) superimposed on the 3.3V power supply. The second frequency-voltage conversion module 122 is responsible for demodulating the received second signal into the data signal of the bus signal. The first frequency-voltage conversion module 121 and the second frequency-voltage conversion module 122 transmit the demodulated clock signal and data signal of the bus signal to the control unit, enabling the control unit to obtain the relevant status information of the power supply unit, thereby realizing the effective control and management of the power supply system.

[0067] During the operation of the power management module, the first modulation circuit on the power supply board modulates a variety of low-speed control signals (the first signals) generated by the power supply unit into second signals, and transmits them to the main board through the first power supply pin and the second power supply pin respectively. Among them, the second signals exist in the form of sine waves and are divided into a clock part and a data part, which are superimposed on the 12V and 3.3V power supplies and transmitted respectively.

[0068] When these mixed signals are transmitted to the main board, the first frequency voltage conversion module and the second frequency voltage conversion module start to work. The first frequency voltage conversion module processes the second signal received from the first power supply pin. Using the frequency-voltage conversion technology, according to the frequency change characteristics of the second signal, it converts it into a corresponding voltage signal, and then restores the clock signal of the bus signal. For example, if the high frequency in the second signal corresponds to the high level of the clock signal and the low frequency corresponds to the low level, the first frequency voltage conversion module detects the frequency change, converts the high-frequency signal into a high voltage, and the low-frequency signal into a low voltage, thereby restoring the original clock signal.

[0069] Similarly, the second frequency voltage conversion module demodulates the second signal received from the second power supply pin. By identifying the frequency change law of the data part of the second signal, it converts it into a corresponding voltage signal to obtain the data signal of the bus signal. Finally, the first frequency voltage conversion module and the second frequency voltage conversion module transmit the demodulated clock signal and data signal to the control unit. The control unit analyzes the status information of the power supply unit, such as whether it is in place, whether an alarm is generated, etc., based on these signals, and makes corresponding control decisions.

[0070] In the embodiment of the present application, the first frequency voltage conversion module and the second frequency voltage conversion module use the frequency-voltage conversion technology for signal demodulation. Compared with the traditional demodulation method, it can more accurately identify the frequency change characteristics of the second signal, so as to accurately restore the clock signal and data signal of the bus signal. This high-precision demodulation method effectively avoids signal distortion and misjudgment, ensures that the status information of the power supply unit obtained by the control unit is true and reliable, and improves the signal processing accuracy of the power management module and the stability of the system operation. In this embodiment, the first demodulation circuit is only composed of two frequency voltage conversion modules, and the structure is more concise compared with the complex multi-stage demodulation circuit.

[0071] In some optional embodiments, a second modulation circuit is further included. The first input end and the second input end of the second modulation circuit are both electrically connected to the control unit for obtaining the bus signal of the control unit; the first output end of the second modulation circuit is electrically connected to the AC live wire, and the second output end of the second modulation circuit is electrically connected to the AC neutral wire. The second modulation circuit is used to modulate the bus signal of the control unit into a third signal and then transmit it to the AC live wire and the AC neutral wire.

[0072] Figure 5 This is a schematic structural diagram of another power management module provided by an embodiment of the present application. As Figure 5 shown, the bus signal generated by the control unit 11 is transmitted to the second modulation circuit 23, and the second modulation circuit 23 monitors and analyzes the bus signal in real time. When a logic high level in the bus signal is detected, the second modulation circuit generates, for example, a sine wave signal (the third signal) of 500 MHz; when a logic low level is detected, a sine wave signal (the third signal) of 300 MHz is generated. In this way, the original bus signal is converted into sine wave analog signals of different frequencies to complete the signal modulation process. Using the existing power lines as the signal transmission medium, the modulated third signal is loaded onto the AC live wire and the AC neutral wire. The administrator does not need to set up dedicated communication lines or devices near the electronic equipment. As long as a demodulator is inserted at any place with a mains socket in the computer room, the data reading and control of the control unit of the main board can be realized. This method greatly simplifies the wiring work for remote management, reduces the management cost, improves the convenience and flexibility of management, and is especially suitable for scenarios with a large number of servers, such as large data centers, which are widely distributed.

[0073] In some alternative embodiments, the IP address obtained after communicating with the control unit is embedded in the message of the bus signal as the unique identifier of the device to ensure the accurate identification of communication data between different devices and avoid signal confusion. In the data center computer room environment, the AC power supply loaded with the third signal is transmitted through the power network, which can cover any section of the power line in the computer room and its surrounding areas. When the computer room administrator uses the detection device, it is connected to any mains socket in the control room. The second demodulation circuit in the detection device obtains the signal by connecting to the AC live wire and the neutral wire. The second demodulation circuit extracts the high-frequency signal components of 300 MHz or 500 MHz through processing such as filtering and frequency identification, and demodulates and restores them to the original bus signal. Furthermore, the detection device can accurately analyze the data information of the corresponding device according to the IP address in the message, and realize the remote data acquisition and communication control of each device in the computer room.

[0074] In some alternative embodiments, the power management module further includes a fifth capacitor and a sixth capacitor. The fifth capacitor is connected in series between the first output terminal of the second modulation circuit and the AC live wire; the sixth capacitor is connected in series between the second output terminal of the second modulation circuit and the AC neutral wire.

[0075] Figure 6 This is a partial schematic structural diagram of another power management module provided by an embodiment of the present application. As Figure 6 shown, in this embodiment, the second modulation circuit 23 is connected to the AC power line through the fifth capacitor C5 and the sixth capacitor C6.

[0076] The fifth capacitor C5 is connected in series between the first output terminal of the second modulation circuit and the AC live wire. This capacitor serves as a coupling channel for high-frequency signals, allowing the modulation signal (the third signal) of the control unit to pass through while isolating the DC component of the AC power supply. The sixth capacitor C6 is connected in series between the second output terminal of the second modulation circuit and the AC neutral wire, with a similar function to C5, forming a complete loop for signal transmission. The bus signal of the control unit 11 (such as a baseboard management controller) is modulated by the second modulation circuit into a third signal (such as a sine wave). The third signal is coupled to the AC live wire and the AC neutral wire through C5 and C6.

[0077] The series structure of C5 and C6 effectively isolates the control circuit from the DC component of the AC power supply, preventing high voltage from entering the control circuit and avoiding damage to the control unit. When abnormalities occur in the power line (such as short circuits, surges), C5 and C6 can limit the current impact and protect the second modulation circuit from damage. The low capacitive reactance characteristic of the capacitor ensures that the modulation signal is coupled to the power line with minimum loss, improving the strength and quality of signal transmission.

[0078] In some alternative embodiments, the second modulation circuit includes a third voltage-frequency conversion module and a fourth voltage-frequency conversion module.

[0079] The voltage input terminal of the third voltage-frequency conversion module is electrically connected to the serial communication protocol clock signal terminal of the control unit, for obtaining the clock signal in the bus signal of the control unit. The voltage input terminal of the fourth voltage-frequency conversion module is electrically connected to the serial communication protocol data signal terminal of the control unit, for obtaining the data signal in the bus signal of the control unit. The third voltage-frequency conversion module is used to modulate the clock signal of the bus signal into a third signal, and the fourth voltage-frequency conversion module is used to modulate the data signal of the bus signal into a third signal.

[0080] As Figure 6 shown, in this embodiment, the second modulation circuit 23 includes a third voltage-frequency conversion module 231 and a fourth voltage-frequency conversion module 232. The voltage input terminal of the third voltage-frequency conversion module 231 is electrically connected to the serial communication protocol clock signal terminal of the control unit 11 (such as the SCL signal terminal of the I2C protocol). The third voltage-frequency conversion module 231 modulates the received clock signal. According to a preset rule, it converts different level states of the clock signal into corresponding frequencies of the third signal. For example, it converts the high level of the clock signal into a sine wave of 500 MHz and the low level into a sine wave of 300 MHz, thus completing the modulation work of the clock signal. The voltage input terminal of the fourth voltage-frequency conversion module 232 is electrically connected to the serial communication protocol data signal terminal of the control unit 11 (such as the SDA signal terminal of the I2C protocol).

[0081] During the operation of the power management module, the control unit generates a bus signal according to the system requirements. The bus signal includes a clock signal and a data signal (taking the I2C protocol as an example). The third voltage-frequency conversion module and the fourth voltage-frequency conversion module respectively obtain the clock signal and the data signal from the control unit. The third voltage-frequency conversion module analyzes the obtained clock signal. When the clock signal is detected as high level, the internal circuit starts and generates a 500 MHz sine wave as the clock part of the third signal; when the low level is detected, a 300 MHz sine wave is generated. Similarly, the fourth voltage-frequency conversion module processes the data signal and generates sine waves with corresponding frequencies according to the logic "1" and logic "0" states of the data signal, completing the modulation of the data signal.

[0082] The modulated clock signal and data signal (i.e., the third signal) are superimposed on the AC live wire and the AC neutral wire through a specific output circuit and connection lines. Since the AC power lines are widely distributed in the computer room, the modulated signal can reach each location with mains power access in the computer room along with the transmission of the alternating current. At the receiving end, other devices extract the third signal from the AC power line through a corresponding demodulation circuit and restore it to the original clock signal and data signal, thus realizing the remote control and management of devices such as the power management module by the control unit.

[0083] In the embodiment of the present application, the voltage-frequency conversion technology is adopted to modulate the bus signal into sine waves with different frequencies. Compared with the traditional voltage modulation method, the frequency signal has stronger resistance to external factors such as power fluctuations and electromagnetic interference. The second modulation circuit consists of only two voltage-frequency conversion modules, and its structure is more concise and clear compared with the complex multi-stage modulation circuit. This simplified design reduces the number of components used and the complexity of the circuit. By modulating the bus signal of the control unit onto the AC power line for transmission, there is no need to lay additional dedicated communication lines, and the long-distance transmission of signals can be realized using the existing power lines. The administrator can connect the corresponding demodulation device at any location with a mains socket in the computer room to realize the remote data reading and control of devices such as servers, breaking through the limitations of the traditional wiring method, improving the convenience and efficiency of remote management, and reducing the management cost.

[0084] In some alternative embodiments, the second modulation circuit can be integrated on the power board. The power board is also provided with an AC power input terminal, and the AC power input terminal is electrically connected to the AC live wire and the AC neutral wire.

[0085] In the power management module, the main board and the power board undertake different functions. The main board is mainly responsible for system control and data processing, and components such as a control unit (such as a baseboard management controller) and a first demodulation circuit are provided thereon, without involving the direct access of alternating current; while the power board, as the core component for power supply and signal modulation, needs to access alternating current and achieve the control of the power unit and the modulation and transmission of signals.

[0086] The power board integrates a second modulation circuit. The second modulation circuit adopts a chip-based or modular design and is directly soldered or installed on the power board to achieve tight integration with other components on the power board. An alternating current input terminal is specifically provided on the power board, and this input terminal is electrically connected to the alternating current live wire and the alternating current neutral wire respectively. The first output terminal of the second modulation circuit is connected to the alternating current live wire in the alternating current input terminal, and the second output terminal is connected to the alternating current neutral wire. Through this connection, the third signal modulated by the second modulation circuit can be directly superimposed on the alternating current power line for transmission. Since the power board itself needs to access alternating current, integrating the second modulation circuit here shortens the line length of the alternating current live wire and the alternating current neutral wire connected to the second modulation circuit.

[0087] In some alternative embodiments, the second modulation circuit is further configured to obtain a control signal through the alternating current live wire and the alternating current neutral wire, and control the modulation frequency of the second modulation circuit based on the demodulated frequency adjustment signal.

[0088] In application scenarios such as data centers, there are situations where multiple power management modules work simultaneously. The control units of each module modulate the bus signal into a third signal through the second modulation circuit and send it to the same alternating current power line. If the modulation signal frequencies of each module are the same, signal conflicts will occur, resulting in data transmission errors.

[0089] The second modulation circuit receives the control signal through the alternating current live wire and the neutral wire. These control signals are superimposed on the alternating current power line in a specific modulation manner. After the signal detection module of the second modulation circuit detects the control signal, it demodulates the control signal through a demodulation circuit. For example, when sine waves of different frequencies in the control signal represent different frequency adjustment instructions, the demodulation circuit converts this frequency information into corresponding digital signals or voltage signals, that is, frequency adjustment signals. The second modulation circuit adjusts its own modulation frequency according to the demodulated frequency adjustment signal. Specifically, the frequency control module inside the second modulation circuit changes the working parameters of the modulation unit according to the frequency adjustment signal, so that the frequency of the modulated third signal changes. Thus, it is ensured that the third signals modulated by the bus signals of the control units of different power management modules have different frequencies, avoiding signal conflicts.

[0090] The mechanism of the embodiment of the present application for obtaining a control signal through a second modulation circuit and adjusting the modulation frequency ensures that when multiple power management modules transmit signals on the same AC power line, the frequencies of the third signals modulated by each module are different. This fundamentally avoids interference and conflicts between signals, ensures that the control signals of each module can be accurately and stably transmitted, and improves the reliability of the multi-module system and the accuracy of data transmission.

[0091] Based on the same inventive concept, the present application further provides an electronic device, including the power management module in any of the above embodiments.

[0092] Since the principle of the electronic device for solving problems is similar to that of the foregoing power management module, the embodiments of the electronic device can refer to the embodiments of the power management module, and the repeated parts will not be described again.

[0093] The electronic device in the embodiment of the present application can be, for example, a server. Figure 7 The following is a schematic structural diagram of a server provided by an embodiment of the present application. As Figure 7 shown, by way of example, the server can be, for example, a storage server. The server includes two power management modules 100. It should be noted that one main board can correspond to at least one power board. Figure 7 By way of example, an example of one main board corresponding to one power board is shown.

[0094] Based on the same inventive concept, the present application further provides a detection device, which is applicable to detecting a power management module including a second modulation circuit. The detection device includes a second demodulation circuit. After the detection device is connected to the AC live wire and the AC neutral wire, the third signal is parsed into a bus signal through the second demodulation circuit.

[0095] After the detection device is connected to the AC live wire and the AC neutral wire, the second demodulation circuit starts to work. Since the second modulation circuit of the power management module has modulated the bus signal of the control unit into a third signal and superimposed it on the AC power line, the second demodulation circuit can obtain these third signals from the AC power line. The second demodulation circuit processes the obtained third signals, and according to the frequency characteristics of the third signals, restores them to the original bus signals. Extract data such as control instructions and status information contained therein.

[0096] The administrator can connect the detection device to the AC power line at any position with a mains socket in the computer room to realize remote data reading and control of various electronic devices (such as servers) in the computer room. Using this solution can eliminate network cables and switches, break through the limitations of traditional wiring methods, improve the convenience and efficiency of remote management, and reduce the management cost.

[0097] In some alternative embodiments, the detection device is further configured to send control signals to the AC live wire and the AC neutral wire. The control signals are used to instruct the second modulation circuit to demodulate into a frequency adjustment signal and control the modulation frequency of the second modulation circuit.

[0098] When the detection device detects that signals of multiple power management modules conflict on the power line, the signal processing unit analyzes the conflict situation and generates a control signal. The control signal is superimposed on the AC live wire and the neutral wire through the coupling circuit and transmitted to each power management module through the power line network. The second modulation circuit of the power management module receives the control signal through the AC live wire and the neutral wire, demodulates the control signal into a frequency adjustment signal, and dynamically adjusts its own modulation frequency according to the demodulated frequency adjustment signal. For example, the modulation frequency of 500 MHz / 300 MHz is adjusted to 520 MHz / 320 MHz. The adjusted modulation frequency separates the signals of each power management module in the frequency domain, and the second demodulation circuit of the detection device can more accurately identify and demodulate the signals of each module.

[0099] The detection device can adjust the modulation frequencies of each power management module in real time according to the actually detected signal conflict situation to avoid co-frequency interference. For example, in a high-density server room, different frequency channels are automatically assigned to different cabinets. In this application, the frequency parameters of the power management module are remotely adjusted by the detection device without on-site operation, which can reduce the maintenance cost.

[0100] In this specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other.

[0101] Those skilled in the art can further realize that the modules and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination of the two. To clearly illustrate the interchangeability of hardware and software, the components and steps of each example have been generally described according to their functions in the above description. Whether these functions are executed in a hardware or software manner 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 to exceed the scope of this application.

[0102] The above has introduced the storage component provided by the present application in detail. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A power management module, characterized in that, Including: Main board; Power supply board; A power supply unit and a first modulation circuit are provided on the power supply board; the power supply board includes power supply pins; The power supply unit and the first modulation circuit are electrically connected; the first modulation circuit is electrically connected to the power supply pins; the first modulation circuit is configured to obtain a first signal of the power supply unit, and modulate the first signal into a second signal and then transmit it to the power supply pins; A control unit and a first demodulation circuit are provided on the main board; the control unit and the first demodulation circuit are electrically connected; the power supply pins are electrically connected to the first demodulation circuit through a power line; the first demodulation circuit is configured to demodulate the second signal transmitted by the power supply pins into the first signal and then transmit it to the control unit.

2. The power management module according to claim 1, wherein The power supply pins include a first power supply pin and a second power supply pin; the first modulation circuit includes a first end and a second end; the first end is electrically connected to the first power supply pin; the second end is electrically connected to the second power supply pin; The first demodulation circuit includes a third end and a fourth end; the third end is electrically connected to the first power supply pin through a first power line; the fourth end is electrically connected to the second power supply pin through a second power line.

3. The power management module according to claim 2, wherein It further includes a first inductor, a second inductor, a first capacitor, and a second capacitor; The first inductor is connected in series between the power supply unit and the first power supply pin; the second inductor is connected in series between the power supply unit and the second power supply pin; The first capacitor is connected in series between the first end and the first power supply pin; the second capacitor is connected in series between the second end and the second power supply pin.

4. The power management module according to claim 2, wherein, The first modulation circuit includes a signal conversion module, a first voltage-frequency conversion module, and a second voltage-frequency conversion module; The signal conversion module obtains the sideband single-ended signal in the first signal of the power supply unit through the input-output terminal; the clock signal terminal of the signal conversion module is electrically connected to the voltage input terminal of the first voltage-frequency conversion module; the data signal terminal of the signal conversion module is electrically connected to the voltage input terminal of the second voltage-frequency conversion module; The signal conversion module is configured to convert the sideband single-ended signal in the first signal into a bus signal; The first voltage-frequency conversion module is configured to modulate the clock signal of the bus signal into a second signal; the first voltage-frequency conversion module is configured to modulate the data signal of the bus signal into a second signal.

5. The power management module according to claim 2, wherein The first modulation circuit includes a signal conversion module, a multiplexing module, a first voltage-frequency conversion module, and a second voltage-frequency conversion module; The signal conversion module obtains the sideband single-ended signal in the first signal of the power supply unit through the input-output terminal; the signal conversion module is configured to convert the sideband single-ended signal in the first signal into a bus signal; The clock signal terminal of the signal conversion module is electrically connected to the first clock signal terminal of the multiplexing module; the data signal terminal of the signal conversion module is electrically connected to the first data signal terminal of the multiplexing module; the second clock signal terminal of the multiplexing module is further used to obtain the clock signal of the bus signal in the first signal; the second data signal terminal of the multiplexing module is further used to obtain the data signal of the bus signal in the first signal; the multiplexing module is used to convert the bus signal in the first signal and the bus signal converted by the signal conversion module into a group of bus signals; The clock signal output terminal of the multiplexing module is electrically connected to the voltage input terminal of the first voltage-frequency conversion module; the data signal output terminal of the multiplexing module is electrically connected to the voltage input terminal of the second voltage-frequency conversion module; The first voltage-frequency conversion module is used to modulate the clock signal of the bus signal into a second signal; the first voltage-frequency conversion module is used to modulate the data signal of the bus signal into a second signal.

6. The power management module according to claim 2, wherein It further includes a third inductor, a fourth inductor, a third capacitor and a fourth capacitor; The third inductor is connected in series between the first power supply pin and the first power consumption terminal of the main board; the fourth inductor is connected in series between the second power supply pin and the second power consumption terminal of the main board; The third capacitor is connected in series between the first power supply pin and the first input terminal of the first demodulation circuit; the fourth capacitor is connected in series between the second power supply pin and the second input terminal of the first demodulation circuit.

7. The power management module according to claim 2, wherein The first demodulation circuit includes a first frequency-voltage conversion module and a second frequency-voltage conversion module. The voltage input terminal of the first frequency-voltage conversion module is connected to the first power supply pin, and the voltage input terminal of the second frequency-voltage conversion module is connected to the second power supply pin; The first frequency-voltage conversion module is used to demodulate the second signal into the clock signal of the bus signal; the second frequency-voltage conversion module is used to demodulate the second signal into the data signal of the bus signal.

8. The power management module according to claim 1, wherein It further includes a second modulation circuit; The first input terminal and the second input terminal of the second modulation circuit are both electrically connected to the control unit for obtaining the bus signal of the control unit; the first output terminal of the second modulation circuit is electrically connected to the AC live wire, and the second output terminal of the second modulation circuit is electrically connected to the AC neutral wire; The second modulation circuit is used to modulate the bus signal of the control unit into a third signal and then transmit it to the AC live wire and the AC neutral wire.

9. The power management module according to claim 8, wherein, It further includes a fifth capacitor and a sixth capacitor; The fifth capacitor is connected in series between the first output terminal of the second modulation circuit and the AC live wire; the sixth capacitor is connected in series between the second output terminal of the second modulation circuit and the AC neutral wire.

10. The power management module according to claim 8, wherein The second modulation circuit includes a third voltage-frequency conversion module and a fourth voltage-frequency conversion module; The voltage input terminal of the third voltage-frequency conversion module is electrically connected to the serial communication protocol clock signal terminal of the control unit, and is used to obtain the clock signal in the bus signal of the control unit; the voltage input terminal of the fourth voltage-frequency conversion module is electrically connected to the serial communication protocol data signal terminal of the control unit, and is used to obtain the data signal in the bus signal of the control unit; the third voltage-frequency conversion module is used to modulate the clock signal of the bus signal into a third signal; the fourth voltage-frequency conversion module is used to modulate the data signal of the bus signal into a third signal.

11. The power management module according to claim 8, wherein, The second modulation circuit is integrated on the power supply board; an AC power input terminal is further provided on the power supply board, and the AC power input terminal is electrically connected to the AC live wire and the AC neutral wire.

12. The power management module according to claim 8, wherein The second modulation circuit is further used to obtain a control signal through the AC live wire and the AC neutral wire, and control the modulation frequency of the second modulation circuit based on the demodulated frequency adjustment signal.

13. An electronic device, characterized in that, It includes the power management module according to any one of claims 1-12.

14. A detection device, characterized in that, Suitable for detecting the power management module according to any one of claims 8-12, the detection device includes: a second demodulation circuit; After the detection device is connected to the AC live wire and the AC neutral wire, the third signal is parsed into a bus signal through the second demodulation circuit.

15. The detection device according to claim 14, wherein The detection device is further used to send a control signal to the AC live wire and the AC neutral wire; The control signal is used to instruct the second modulation circuit to demodulate into a frequency adjustment signal and control the modulation frequency of the second modulation circuit.

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