Power management module, electronic equipment and detection device

Abstract

The present application discloses a power management module, an electronic device, and a detection device. The power management module includes a mainboard and a power board; a power supply unit and a first modulation circuit are provided on the power board; the power board includes a power pin; the power supply unit and the first modulation circuit are electrically connected; the first modulation circuit is electrically connected to the power pin; the first modulation circuit is used to obtain a first signal from the power supply unit, and modulate the first signal into a second signal and transmit it to the power pin; a control unit and a first demodulation circuit are provided on the mainboard; the control unit and the first demodulation circuit are electrically connected; the power pin is electrically connected to the first demodulation circuit via a power line; the first demodulation circuit is used to demodulate the second signal transmitted by the power pin into a first signal and transmit it to the control unit. The present application can solve the problem of a large number of connector pins between the power board and the controller.

Description

Technical Field

[0001] The present application relates to the field of servers, and in particular to a power management module, an electronic device, and a detection device. Background Art

[0002] In devices like servers, the power supply unit (PU) and controller exchange signals. To facilitate management, some sideband single-ended signals are used between the PU and controller. These signals include presence signals, alarm signals, DC power supply normal signals, and AC power supply normal signals. In addition, there are bus signals for external communication. These signals are typically connected directly or indirectly to the controller.

[0003] The power supply unit and controller require a large number of sideband single-ended signals. In addition to providing 12V and 3.3V power signals to the controller via the power board, the controller also needs to receive signals such as presence status, alarms, DC output stability indication, AC input stability indication, and I2C bus signals. These signals occupy a large number of pins, resulting in a high number of pins on the connector between the power board and the controller, wasting resources and increasing costs. Summary of the Invention

[0004] The present 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 a power board and a controller.

[0005] In a first aspect, the present application provides a power management module, comprising:

[0006] Motherboard;

[0007] Power board;

[0008] The power supply board is provided with a power supply unit and a first modulation circuit; the power supply board includes a power supply pin;

[0009] The power supply unit is electrically connected to the first modulation circuit; the first modulation circuit is electrically connected to the power pin; the first modulation circuit is used to obtain the first signal of the power supply unit, and modulate the first signal into a second signal and transmit it to the power pin;

[0010] 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 pin is 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 pin into the first signal and then transmit it to the control unit.

[0011] In a second aspect, the present application further provides an electronic device comprising the power management module in the first aspect.

[0012] In a third aspect, the present application further provides a detection device, applicable to the power management module in the first aspect, the detection device comprising: a second demodulation circuit;

[0013] After the detection device is connected to the AC live wire and the AC neutral wire, the second demodulation circuit parses the third signal into a bus signal.

[0014] The power management module provided in this application includes a mainboard and a power board. The power board is provided with a power supply unit and a first modulation circuit. The power board includes a power pin, the power supply unit is electrically connected to the first modulation circuit, and the first modulation circuit is electrically connected to the power pin. The first modulation circuit is configured to receive a first signal from the power supply unit, modulate the first signal into a second signal, and transmit the second signal to the power pin. A control unit and a first demodulation circuit are provided on the mainboard. The control unit and the first demodulation circuit are electrically connected. The power pin is electrically connected to the first demodulation circuit via a power line. The first demodulation circuit is configured to demodulate the second signal transmitted from the power pin into a first signal and transmit the first signal to the control unit. In this application, the power supply unit continuously monitors its operating status and generates various low-speed control signals (i.e., first signals). The first modulation circuit receives these first signals in real time and modulates them into second signals according to a preset modulation rule. The signals are then transmitted to the first demodulation circuit on the mainboard via the power pin and power line. After receiving the second signal, the first demodulation circuit demodulates it to recover the original first signal and transmits it to the control unit. Based on the received signals, the control unit determines the operating status of the power supply unit, such as whether an alarm has occurred or whether the power supply is normal, and makes corresponding control decisions accordingly, such as issuing an alarm prompt and adjusting the power output. Compared to traditional solutions that require separate pins for each low-speed control signal between the power board and the controller, the power management module in this application modulates multiple low-speed control signals into a single second signal for transmission through a first modulation circuit. Signal transmission can be completed only through power pins and power cables, which greatly reduces the number of pins required in the connector between the power board and the motherboard. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0016] Figure 1 A schematic diagram of the structure of a power management module provided in an embodiment of the present application;

[0017] Figure 2 A schematic diagram of a partial structure of a power management module provided in an embodiment of the present application;

[0018] Figure 3 A schematic structural diagram of a first modulation circuit provided in an embodiment of the present application;

[0019] Figure 4 A schematic diagram of a partial structure of another power management module provided in an embodiment of the present application;

[0020] Figure 5 A schematic diagram of the structure of another power management module provided in an embodiment of the present application;

[0021] Figure 6 A schematic diagram of a partial structure of another power management module provided in an embodiment of the present application;

[0022] Figure 7 A schematic diagram of the structure of a server provided in an embodiment of the present application. DETAILED DESCRIPTION

[0023] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0024] It should be noted that, in the description of this application, the terms "comprises," "includes," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. The terms "first," "second," etc., in this application are used to distinguish similar objects, and are not used to describe a particular order or sequence.

[0025] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0026] In the power management system of electronic equipment such as servers, the signal interaction between the power supply unit and the controller is a key link in achieving stable operation and effective management of the equipment. In order to achieve convenient control of the power supply unit, a series of sideband single-ended signals are configured between the two, including in-place signals and alarm signals used to characterize the working status of the power supply unit, as well as DC power normal signals and AC power normal signals used to feedback the power status. In addition, to meet the communication needs with external devices, bus signals such as I2C bus signals are also provided. 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.

[0027] However, current technology has significant drawbacks. The sideband single-ended signals between the power supply unit and the controller are numerous and diverse. In addition to the 12V and 3.3V power signals transmitted from the power supply unit to the controller, signals such as presence, alarms, DC output stability indicators, AC input stability indicators, and I2C bus signals all require independent transmission channels. This results in the connector between the power board and the controller being equipped with a large number of pins. This not only complicates the connector design and increases its size, leading to higher raw material and manufacturing costs, but also complicates the internal wiring of the device, increasing assembly difficulty and the probability of errors. Furthermore, the use of a large number of pins occupies the controller's limited signal access resources, restricting the expansion and optimization of system functions, reducing overall resource utilization efficiency, and becoming a significant factor restricting the performance of power management systems.

[0028] In order to solve the above problems, the present invention provides a power management module. Figure 1 A schematic diagram of the structure of a power management module provided in an embodiment of the present application is shown in FIG. Figure 1 As shown, the power management module provided in this application includes a main board 10 and a power board 20.

[0029] As for the power supply board, a power supply unit 21 and a first modulation circuit 22 are provided on it. The power supply unit 21 is the core component of the entire power supply board to realize the power supply function. The power supply board contains a power pin 211, which is used to realize electrical connection with the outside and provide the system with power outputs such as 12V and 3.3V. The power supply unit 21 and the first modulation circuit 22 are electrically connected through an electrical line. This connection method ensures stable signal transmission between the two. The first modulation circuit 22 is also electrically connected to the power pin through an electrical line. Its main function is to obtain the first signal generated by the power supply unit 21. The first signal here covers a variety of 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 modulate these first signals and integrate and modulate the various low-speed control signals into a second signal that is easy to transmit through specific modulation techniques, such as frequency modulation, amplitude modulation, etc., and then transmit the second signal to the power pin.

[0030] A control unit 11 and a first demodulation circuit 12 are provided on the mainboard 10. The control unit 11 is a key part for realizing the system control function on the mainboard, and is electrically connected to the first demodulation circuit 12 through an electrical line to realize data interaction between the two. The power 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 from the power pin 211 through the power line, and use the demodulation technology corresponding to the 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 status information of the power unit 21, thereby realizing effective management and control of the power supply system.

[0031] During actual operation, the power supply unit 21 continuously monitors its operating status and generates various low-speed control signals (i.e., first signals). The first modulation circuit 22 acquires these first signals in real time and modulates them into second signals according to preset modulation rules. These signals are then transmitted to the first demodulation circuit 12 on the mainboard 10 via the power pin 211 and the power line. After receiving the second signals, the first demodulation circuit 12 demodulates them to recover the original first signals and transmits these signals to the control unit 11. Based on the received signals, the control unit 11 determines the operating status of the power supply unit, such as whether an alarm has occurred or whether the power supply is normal, and makes appropriate control decisions accordingly, such as issuing an alarm or adjusting the power output.

[0032] Compared to the traditional solution in which each low-speed control signal between the power supply unit and the controller requires a separate pin for connection, the power management module provided in this embodiment modulates multiple low-speed control signals into a second signal for transmission through a first modulation circuit, and signal transmission can be completed only through power pins and power lines. This greatly reduces the number of pins required for the connector between the power board and the motherboard. For example, dozens of pins may 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 waste of resources.

[0033] For machines with high power consumption and multiple power supply units, traditional solutions require the numerous low-speed control signals from each power supply unit to occupy the limited input and output pin resources of the logic devices on the board. However, in this power management module, because multiple low-speed control signals are integrated and modulated for transmission, the number of signals transmitted between each power supply board and the mainboard is significantly reduced, and accordingly, the input and output pin resources occupied by the logic devices are also significantly reduced. This allows these logic devices to use more of their input and output pin resources for other important functions, improving the resource utilization of the logic devices and enhancing the overall performance and scalability of the system.

[0034] The embodiments of the present application process low-speed control signals through modulation and demodulation technology, which can reduce the interference to the signal during transmission to a certain extent. The modulation process can encode and enhance the signal, making the signal more resistant to interference when transmitted in the power line; the demodulation process can accurately restore the original signal, ensuring 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 and ensures the stable operation of the power supply system and the entire device.

[0035] In some optional embodiments, the power pin includes 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 being electrically connected to the first power pin, and the second end being electrically connected to the second power pin. The first demodulation circuit includes a third end and a fourth end, the third end being electrically connected to the first power pin via a first power line, and the fourth end being electrically connected to the second power pin via a second power line.

[0036] 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, for example, a 12V power pin, is primarily responsible for providing 12V power to the system; the second power pin, for example, a 3.3V power pin, primarily provides 3.3V power output. These two power pins are the core interfaces for interaction between the power board and the motherboard. They not only transmit the power output of the power supply unit but also transmit modulated control signals, acting as a "bridge" for data and energy flow between the power board and the motherboard.

[0037] The first modulation circuit on the power board has a first end and a second end. The first end is electrically connected to the first power pin via an electrical circuit, and the second end is also electrically connected to the second power pin via an electrical circuit. This connection enables the first modulation circuit to accurately transmit the processed signal to the corresponding power pin. The first demodulation circuit on the main board has a third end and a fourth end. The third end is electrically connected to the first power pin via a first power line, and the fourth end is electrically connected to the second power pin via a second power line.

[0038] The first modulation circuit has a first end and a second end. The first end is electrically connected to the first power pin (12V power pin), while the second end is electrically connected to the second power pin (3.3V power pin). When the power supply unit generates various low-speed control signals (i.e., first signals), such as a presence signal, an alarm signal, a DC power normal signal, an AC power normal signal, and an I2C bus signal, the first modulation circuit modulates these first signals according to preset signal processing rules. Specifically, the modulated second signal is typically a sinusoidal signal divided into a clock portion and a data portion, and is thus outputted separately from the first and second ends of the first modulation circuit. For example, the sinusoidal clock signal is outputted from the first end and transmitted via the first power pin (12V power pin), while the sinusoidal data signal is outputted from the second end and transmitted via the second power pin (3.3V power pin), thereby achieving classified signal transmission.

[0039] The first demodulation circuit on the motherboard includes a third terminal and a fourth terminal. The third terminal is connected to the first power pin (12V power pin) via the first power cable, and the fourth terminal is connected to the second power pin (3.3V power pin) via the second power cable. These first and second power cables, as the physical medium for signal transmission, possess excellent electrical properties, ensuring the stability of the second signal during transmission, minimizing signal attenuation and interference, and ensuring accurate transmission of the second signal from the power pin to the third and fourth terminals of the first demodulation circuit. After receiving the second signal, the first demodulation circuit uses appropriate demodulation techniques to restore the second signal to the original first signal and transmits it to the control unit, providing an accurate signal basis for monitoring and managing the power system.

[0040] During operation of the power management module, the power supply unit is in continuous operation, continuously generating various low-speed control signals. The first modulation circuit monitors and acquires these first signals in real time, classifying, processing, and modulating them according to a pre-set modulation strategy. Specifically, the low-speed control signal to be transmitted is modulated into a second sinusoidal signal, which is then divided into a clock portion and a data portion. The sinusoidal clock portion is output from the first terminal of the first modulation circuit and transmitted via the first power pin (12V power pin) and the first power line to the third terminal of the first demodulation circuit. The sinusoidal data portion is output from the second terminal of the first modulation circuit and transmitted via the second power pin (3.3V power pin) and the second power line to the fourth terminal of the first demodulation circuit.

[0041] After receiving the corresponding second signal, the third and fourth terminals of the first demodulation circuit initiate a demodulation process. Using a specific demodulation algorithm, the clock and data sinusoidal signals are demodulated, respectively, to restore them to the original first signals. These signals are then transmitted to the control unit. Based on the received signals, the control unit performs real-time analysis and determination of the operating status of the power supply unit, such as determining whether the power supply has failed or is in normal operating mode. Based on this determination, the control unit makes appropriate control decisions, such as issuing alarms and adjusting power supply output parameters, thereby achieving effective management of the power supply system.

[0042] In some optional 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 pin, and the second inductor is connected in series between the power supply unit and the second power pin. The first capacitor is connected in series between a first end and the first power pin, and the second capacitor is connected in series between a second end and the second power pin.

[0043] Figure 2 This is a partial structural diagram of a power management module provided in an embodiment of the present application. Figure 2As 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:

[0044] The first inductor L1 is connected in series between the power supply unit 21 and the first power pin 2111 (eg, the 12V power pin). Its function is to suppress high-frequency interference signals while allowing the DC power signal to pass smoothly, ensuring the stability of the power output.

[0045] The second inductor L2 is connected in series between the power supply unit 21 and the second power pin 2112 (eg, a 3.3V power pin). Its function is similar to that of the first inductor L1 , providing filtering and stabilization for the 3.3V power line.

[0046] First capacitor C1 is connected in series between the first terminal of the first modulation circuit 22 and the first power pin 2111. This capacitor is used to couple the modulated sine wave signal (such as the clock portion) so that it can be superimposed on the 12V DC power supply for transmission, while isolating the DC component to prevent it from affecting the modulation circuit.

[0047] The second capacitor C2 is connected in series between the second end of the first modulation circuit 22 and the second power pin 2112 . It has a similar function to the first capacitor C1 and is responsible for coupling the sine wave signal of the data portion to the 3.3V power line.

[0048] In this embodiment of the present application, the 12V and 3.3V DC power outputs from the power supply unit are filtered by L1 and L2, respectively, before being delivered to the corresponding power pins. The inductor element effectively suppresses high-frequency noise in the power supply, ensuring power quality.

[0049] The first modulation circuit modulates low-speed control signals (such as presence signals and alarm signals) into a sinusoidal wave, dividing it into a clock portion and a data portion. The clock portion is coupled to the 12V power supply line via C1, while the data portion is coupled to the 3.3V power supply line via C2. The characteristics of capacitors allow them to pass AC signals (modulated waves) while blocking DC components, enabling signal superposition transmission. The modulated sinusoidal wave signal is then mixed with the DC power supply on the power supply line and transmitted to the mainboard.

[0050] The presence of the first inductor L1 and the second inductor L2 effectively suppresses high-frequency interference in the power supply line, reducing the impact of power supply 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, making the output voltage more stable. The first capacitor C1 and the second capacitor C2 achieve efficient coupling between the modulated signal and the power supply, allowing the sinusoidal signal to be superimposed on the power supply line without loss. The capacitance value of the capacitor can be optimized based on the frequency characteristics of the modulated signal to ensure the bandwidth and fidelity of the signal transmission. The network of inductors and capacitors provides impedance matching for modulated signals of a specific frequency, reducing reflections and attenuation during signal transmission, and improving the distance and reliability of signal transmission.

[0051] In some optional 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 and output terminals. 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.

[0052] For example Figure 2 As shown, the signal conversion module 221 is connected to the power supply unit 21 through the input and output terminals to obtain the sideband single-ended signal. Figure 2 The exemplary input and output terminals of the signal conversion module 221 are shown as 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.

[0053] 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 portion 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 portion of the bus signal.

[0054] The first voltage-frequency conversion module 222 receives the clock signal portion output by the signal conversion module, modulates the clock signal portion into a frequency-varying sine wave signal (second signal), and outputs it to the first power pin 2111 (such as a 12V power pin) through the first end.

[0055] The second voltage-frequency conversion module 223 receives the data signal portion output by the signal conversion module, modulates the data signal portion into a frequency-varying sine wave signal (second signal), and outputs it to the second power pin 2112 (such as a 3.3V power pin) through the second end.

[0056] In an embodiment of the present application, the signal conversion module monitors the sideband single-ended signal status of the power supply unit in real time (such as 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.

[0057] The first voltage-to-frequency conversion module modulates the voltage of the clock signal output by the signal conversion module into a sinusoidal signal with a frequency that varies with the voltage. The second voltage-to-frequency conversion module modulates the voltage of the data signal into a sinusoidal signal with a frequency that varies. For example, a high-level "1" signal can be modulated into a 500MHz sinusoidal wave, while a low-level "0" signal can be modulated into a 300MHz sinusoidal wave. The modulated clock sinusoidal wave is output to the first power pin via the first terminal, and the data sinusoidal wave is output to the second power pin via the second terminal, achieving signal superposition transmission on the power line.

[0058] The embodiment of the present application integrates multiple sideband single-ended signals into a standard bus signal (such as I2C) through a signal conversion module, which 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 supply fluctuations and electromagnetic interference. The existing power supply lines (such as 12V, 3.3V) are used to transmit signals simultaneously, without the need to lay additional signal lines, reducing the wiring complexity and the number of connector pins.

[0059] 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, circuit complexity, and printed circuit board area.

[0060] In a server power management system, when the status of multiple power supply units needs to be monitored simultaneously, each sideband single-ended signal (such as presence and alarm) is converted into a bus signal format by a signal conversion module. The clock signal is modulated by a first voltage-frequency conversion module onto the power line corresponding to the first power pin, while the data signal is modulated by a second voltage-frequency conversion module onto the power line corresponding to the second power pin. The motherboard control unit receives and analyzes these signals using a first demodulation circuit, enabling centralized monitoring of the power supply unit status and significantly reducing motherboard I / O port usage.

[0061] In some optional implementations, 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.

[0062] The signal conversion module obtains a sideband single-ended signal from the first signal of the power supply unit through its input and output terminals, and is configured to convert the sideband single-ended signal from 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 further configured to obtain a clock signal from the bus signal in the first signal, and the second data signal terminal of the multiplexing module is further configured to obtain a data signal from the bus signal in the first signal. The multiplexing module is configured 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.

[0063] 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 the second signal, and the first voltage-frequency conversion module is used to modulate the data signal of the bus signal into the second signal.

[0064] Figure 3 A schematic diagram of the structure of a first modulation circuit provided in an embodiment of the present application. In an 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.

[0065] 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 .

[0066] The signal conversion module 221 converts the sideband single-ended signal (such as a presence signal, an alarm signal, etc.) generated by the power supply unit 21 into a bus signal (such as an I2C format).

[0067] The signal conversion module 221 is connected to the power supply unit 21 via its input and output terminals to collect the sideband single-ended signal. 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, outputting 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, outputting the converted bus data signal. The second clock signal terminal SCL of the multiplexing module 224 directly obtains the bus signal clock from the power supply unit 21. The second data signal terminal SDA of the multiplexing module 224 directly obtains the bus signal data from the power supply unit 21. The multiplexing module 224 integrates the bus signals from two sources (the bus signal converted from the sideband single-ended signal + the original bus signal) 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 .

[0068] The first voltage-frequency conversion module 222 modulates the multiplexed clock signal into a frequency-varying sine wave and outputs it to a first power pin (e.g., a 12V power pin) through a first terminal. The second voltage-frequency conversion module 223 modulates the multiplexed data signal into a frequency-varying sine wave and outputs it to a second power pin (e.g., a 3.3V power pin) through a second terminal.

[0069] In the embodiment of the present application, the signal conversion module converts a discrete sideband single-ended signal (such as the high / low level of the in-position signal) into a bus signal in the I2C format. The multiplexing module simultaneously receives the original bus signal of the power supply unit (such as SCL / SDA of I2C). The multiplexing module integrates the bus signals from the two sources into a unified output according to a preset priority or timing rule, for example, transmitting 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.

[0070] The embodiment of the present application integrates different types of signals (sideband single-ended signals and original bus signals) into a unified bus protocol through a multiplexing module, thereby simplifying the interface design of the control unit. Compared with the traditional solution in which pins are separately assigned to each signal, the present embodiment transmits multiple signals by multiplexing the power supply lines, which greatly reduces the number of connector pins. The embodiment of the present application is applicable to power supply units that contain both sideband single-ended signals and bus signals. For example, some power supply units provide discrete signals such as in-position 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 at the same time. The embodiment of the present application uses time-division multiplexing and other technologies to 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 to fully utilize the bus bandwidth.

[0071] In some optional 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 pin and the first power terminal of the motherboard, the fourth inductor is connected in series between the second power pin and the second power terminal of the motherboard, the third capacitor is connected in series between the first power pin and the first input terminal of the first demodulation circuit, and the fourth capacitor is connected in series between the second power pin and the second input terminal of the first demodulation circuit.

[0072] Figure 4 This is a partial structural diagram of another power management module provided in an embodiment of the present application. Figure 4 As 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, and each component forms a signal demodulation and power filter network through a specific connection method.

[0073] The third inductor L3 is connected in series between the first power pin (e.g., the 12V power pin) and the first power terminal VR1 on the motherboard. Its function is to suppress high-frequency modulated signals while allowing the DC power signal to pass smoothly. The fourth inductor L4 is connected in series between the second power pin (e.g., the 3.3V power pin) and the second power terminal VR2 on the motherboard. Its function is similar to that of L3, providing filtering and stabilization for the 3.3V power line.

[0074] The third capacitor C3 is connected in series between the first power pin and the first input of the first demodulation circuit. This capacitor couples the modulated sinusoidal signal (such as the clock component) to separate it from the power supply line and isolates the DC component to prevent it from affecting the demodulation circuit. The fourth capacitor C4 is connected in series between the second power pin and the second input of the first demodulation circuit. Similar to C3, it is responsible for separating the data portion of the sinusoidal signal from the 3.3V power supply line.

[0075] When the modulated sine wave signal is mixed with the DC power supply and transmitted to the mainboard, 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 mainboard's power terminals. Meanwhile, 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 of the first demodulation circuit. After receiving the separated sine wave signal, the first demodulation circuit uses frequency detection, phase analysis, and other techniques to restore it to the original clock and data signals, which are ultimately transmitted to the control unit for processing.

[0076] The embodiment of this application achieves efficient separation of the modulated signal from the DC power supply through the combination of L3, C3, L4, and C4, ensuring that the demodulation circuit can accurately obtain the original modulated signal and improving demodulation accuracy. The coupling characteristics of the capacitors enable the modulated signal to be transmitted from the power supply line to the demodulation circuit with low loss, reducing signal attenuation and ensuring signal integrity.

[0077] In some optional embodiments, the first demodulation circuit includes a first frequency-voltage conversion module and a second frequency-voltage conversion module, wherein a voltage input terminal of the first frequency-voltage conversion module is connected to the first power pin, and a voltage input terminal of the second frequency-voltage conversion module is connected to the second power pin. The first frequency-voltage conversion module is configured to demodulate the second signal into a clock signal for the bus signal, and the second frequency-voltage conversion module is configured to demodulate the second signal into a data signal for the bus signal.

[0078] In the power management module of this embodiment, the first demodulation circuit 12 includes a first frequency-to-voltage conversion module 121 and a second frequency-to-voltage conversion module 122. These two modules are core components for signal demodulation. The voltage input terminal of the first frequency-to-voltage conversion module 121 is electrically connected to a first power pin 2111 (e.g., a 12V power pin). The first power pin transmits a second signal (typically the clock portion of a sinusoidal signal) modulated by the first modulation circuit and superimposed on the 12V power supply. The primary function of the first frequency-to-voltage conversion module 121 is to demodulate the received second signal and recover the clock signal of the bus signal.

[0079] The voltage input of the second frequency-to-voltage conversion module 122 is electrically connected to a second power pin 2112 (e.g., a 3.3V power pin). The second power pin transmits a second signal (typically the data portion of a sinusoidal signal) superimposed on the 3.3V power supply. The second frequency-to-voltage conversion module 122 is responsible for demodulating the received second signal into the data signal of the bus signal. The first frequency-to-voltage conversion module 121 and the second frequency-to-voltage conversion module 122 transmit the demodulated clock and data signals of the bus signal to the control unit, enabling the control unit to obtain relevant status information of the power supply unit, thereby achieving effective control and management of the power supply system.

[0080] During operation of the power management module, the first modulation circuit on the power board modulates the various low-speed control signals (first signals) generated by the power supply unit into second signals, which are then transmitted to the mainboard via the first and second power pins. The second signal is a sinusoidal wave composed of a clock portion and a data portion, which are superimposed on the 12V and 3.3V power supplies, respectively, for transmission.

[0081] After these mixed signals are transmitted to the mainboard, the first and second frequency-voltage conversion modules begin operation. The first frequency-voltage conversion module processes the second signal received from the first power pin and, using frequency-voltage conversion technology, converts it into a corresponding voltage signal based on the frequency variation characteristics of the second signal, thereby restoring the clock signal of the bus signal. For example, if the high frequency in the second signal corresponds to a high level of the clock signal and the low frequency corresponds to a low level, the first frequency-voltage conversion module detects the frequency variation and converts the high-frequency signal into a high voltage and the low-frequency signal into a low voltage, thereby restoring the original clock signal.

[0082] Similarly, the second frequency-to-voltage conversion module demodulates the second signal received from the second power pin. By identifying the frequency variation pattern of the data portion of the second signal, it converts it into a corresponding voltage signal, generating the data signal of the bus signal. Finally, the first and second frequency-to-voltage conversion modules transmit the demodulated clock and data signals to the control unit. Based on these signals, the control unit parses information about the power supply unit's status, such as whether it is in place and whether an alarm has been generated, and makes appropriate control decisions.

[0083] The embodiment of the present application uses frequency-voltage conversion technology to perform signal demodulation through a first frequency-voltage conversion module and a second frequency-voltage conversion module. Compared with traditional demodulation methods, it can more accurately identify the frequency change characteristics of the second signal, thereby accurately restoring the clock signal and data signal of the bus signal. This high-precision demodulation method effectively avoids signal distortion and misjudgment, ensures that the power supply unit status information obtained by the control unit is true and reliable, and improves the signal processing accuracy of the power management module and the stability of system operation. In this embodiment, the first demodulation circuit is composed of only two frequency-voltage conversion modules, and compared with complex multi-stage demodulation circuits, the structure is simpler.

[0084] In some optional embodiments, a second modulation circuit is further included. A first input terminal and a second input terminal of the second modulation circuit are both electrically connected to the control unit for obtaining a bus signal from the control unit. A first output terminal of the second modulation circuit is electrically connected to the AC live wire, and a second output terminal of the second modulation circuit is electrically connected to the AC neutral wire. The second modulation circuit is configured to modulate the bus signal from the control unit into a third signal and transmit the third signal to the AC live wire and the AC neutral wire.

[0085] Figure 5 A schematic diagram of the structure of another power management module provided in an embodiment of the present application is shown in FIG. Figure 5 As shown, the bus signal generated by the control unit 11 is transmitted to the second modulation circuit 23, which monitors and analyzes the bus signal in real time. When a logic high level is detected in the bus signal, the second modulation circuit generates, for example, a 500MHz sinusoidal signal (the third signal); when a logic low level is detected, a 300MHz sinusoidal signal (the third signal) is generated. In this way, the original bus signal is converted into a sinusoidal analog signal of a different frequency, completing the signal modulation process. Using existing power lines as the signal transmission medium, the modulated third signal is loaded into the AC live and neutral wires. Administrators do not need to set up dedicated communication lines or equipment near electronic equipment. Simply plugging a demodulator into any AC power outlet in the computer room allows them to read and control data from the motherboard's control unit. This approach greatly simplifies remote management wiring, reduces management costs, and improves management convenience and flexibility. It is particularly suitable for scenarios with a large number of widely distributed servers, such as large data centers.

[0086] In some optional implementations, 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, ensuring accurate identification of communication data between different devices and avoiding signal confusion. In the computer room environment of a data center, the AC power supply loaded with the third signal is transmitted through the power network, which can cover any section of power lines in and around the computer room. When the computer room administrator uses the detection device, he connects it to any AC power socket in the control room, and the second demodulation circuit in the detection device obtains the signal by connecting to the AC live wire and neutral wire. The second demodulation circuit extracts the high-frequency signal component of 300MHz or 500MHz through filtering, frequency recognition and other processing, and demodulates it to restore it to the original bus signal. Furthermore, the detection device can accurately parse the data information of the corresponding device according to the IP address in the message, and realize remote data acquisition and communication control of each device in the computer room.

[0087] In some optional 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.

[0088] Figure 6 A partial structural diagram of another power management module provided in an embodiment of the present application is shown in FIG. Figure 6 As 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.

[0089] 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 control unit's modulated signal (third signal) 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, functioning similarly to C5, forming a complete signal transmission loop. The bus signal from the control unit 11 (e.g., a baseboard management controller) is modulated by the second modulation circuit into a third signal (e.g., a sine wave). This third signal is coupled to the AC live and neutral wires via capacitors C5 and C6.

[0090] The series configuration of capacitors 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 potentially damaging the control unit. When power line anomalies (such as short circuits or surges) occur, capacitors C5 and C6 limit the current surge, protecting the secondary modulation circuit from damage. The capacitors' low capacitive reactance for high-frequency signals ensures that the modulated signal is coupled to the power line with minimal loss, improving the strength and quality of signal transmission.

[0091] In some optional implementations, the second modulation circuit includes a third voltage-frequency conversion module and a fourth voltage-frequency conversion module.

[0092] The voltage input end of the third voltage-frequency conversion module is electrically connected to the serial communication protocol clock signal end of the control unit, and is used to obtain the clock signal in the bus signal of the control unit. The voltage input end of the fourth voltage-frequency conversion module is electrically connected to the serial communication protocol data signal end 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, and the fourth voltage-frequency conversion module is used to modulate the data signal of the bus signal into a third signal.

[0093] like Figure 6 As 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 and converts the different level states of the clock signal into a third signal of the corresponding frequency according to a preset rule. For example, the high level of the clock signal is converted into a 500MHz sine wave, and the low level is converted into a 300MHz sine wave, thereby completing the modulation 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).

[0094] During operation of the power management module, the control unit generates a bus signal based on system requirements. This bus signal includes a clock signal and a data signal (using the I2C protocol as an example). The third and fourth voltage-frequency conversion modules receive the clock and data signals, respectively, from the control unit. The third voltage-frequency conversion module analyzes the clock signal. When it detects a high level, the internal circuitry activates and generates a 500MHz sine wave as the clock portion of the third signal. When it detects a low level, it generates a 300MHz sine wave. Similarly, the fourth voltage-frequency conversion module processes the data signal, generating sine waves of corresponding frequencies based on the data signal's logic "1" and logic "0" states, completing the data signal modulation.

[0095] The modulated clock and data signals (the third signal) are superimposed on the AC live and neutral wires via specialized output circuits and connections. Because AC power lines are widely distributed throughout the equipment room, the modulated signals can be transmitted along with the AC power to reach every location within the room with access to mains power. At the receiving end, other devices use appropriate demodulation circuits to extract the third signal from the AC power line and convert it back to the original clock and data signals, enabling remote control and management of devices such as the power management module by the control unit.

[0096] In the embodiment of the present application, voltage-frequency conversion technology is used to modulate the bus signal into a sine wave of different frequencies. Compared with the traditional voltage modulation method, the frequency signal has a stronger resistance to external factors such as power supply fluctuations and electromagnetic interference. The second modulation circuit is composed of only two voltage-frequency conversion modules. Compared with the complex multi-stage modulation circuit, the structure is more concise and clear. This simplified design reduces the number of components used and reduces the complexity of the circuit. By modulating the bus signal of the control unit to the AC power line for transmission, there is no need to lay additional dedicated communication lines, and the long-distance transmission of the signal can be achieved by using the existing power lines. The administrator can connect the corresponding demodulation equipment at any location with a mains socket in the computer room to realize remote data reading and control of servers and other equipment, breaking through the limitations of traditional wiring methods, improving the convenience and efficiency of remote management, and reducing management costs.

[0097] In some optional implementations, the second modulation circuit may be integrated into a power supply board. The power supply board is further provided with an AC input terminal, which is electrically connected to the AC live wire and the AC neutral wire.

[0098] In a power management module, the mainboard and power board perform different functions. The mainboard is primarily responsible for system control and data processing. It houses components such as a control unit (such as the baseboard management controller) and a first demodulation circuit, and does not require direct AC power. The power board, on the other hand, serves as the core component for power supply and signal modulation. It requires AC power and controls the power supply unit and performs signal modulation and transmission.

[0099] The power board integrates a second modulation circuit. This second modulation circuit utilizes a chip-based or modular design and is directly soldered or mounted on the power board, achieving close integration with the other components of the power board. The power board is specifically provided with an AC input terminal, which is electrically connected to the AC live wire and the AC neutral wire, respectively. The first output terminal of the second modulation circuit is connected to the AC live wire of the AC input terminal, and the second output terminal is connected to the AC neutral wire. Through this connection, the third signal modulated by the second modulation circuit can be directly superimposed on the AC power line for transmission. Since the power board itself needs to be connected to AC power, integrating the second modulation circuit here shortens the length of the line connecting the AC live wire and the AC neutral wire to the second modulation circuit.

[0100] In some optional implementations, the second modulation circuit is further configured 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.

[0101] In data centers and other applications, multiple power management modules may operate simultaneously. Each module's control unit modulates the bus signal into a third signal using a second modulation circuit and sends it to the same AC power line. If the modulation signals of each module have the same frequency, signal conflicts can occur, leading to data transmission errors.

[0102] The second modulation circuit receives control signals through the AC live wire and neutral wire. These control signals are superimposed on the AC power line in a specific modulation method. After the signal detection module of the second modulation circuit detects the control signal, it demodulates it through the demodulation circuit. For example, when the sine waves of different frequencies in the control signal represent different frequency adjustment instructions, the demodulation circuit converts these frequency information into corresponding digital signals or voltage signals, namely frequency adjustment signals. The second modulation circuit adjusts its own modulation frequency according to the frequency adjustment signal obtained by demodulation. Specifically, the frequency control module inside the second modulation circuit changes the operating parameters of the modulation unit according to the frequency adjustment signal, so that the frequency of the modulated third signal changes. This ensures that the third signals modulated by the control unit bus signals of different power management modules have different frequencies, avoiding signal conflicts.

[0103] This embodiment of the present application utilizes a mechanism whereby a second modulation circuit acquires control signals and adjusts the modulation frequency, ensuring that when multiple power management modules transmit signals on the same AC power line, the third signal frequencies modulated by each module are different. This fundamentally avoids interference and conflicts between signals, ensuring accurate and stable transmission of control signals for each module, and improving the reliability of the multi-module system and the accuracy of data transmission.

[0104] Based on the same inventive concept, the present application also provides an electronic device, comprising the power management module in any of the above embodiments.

[0105] Since the principle of solving the problem of the electronic device is similar to that of the aforementioned power management module, the embodiments of the electronic device can refer to the embodiments of the power management module, and the repeated parts will be omitted.

[0106] The electronic device in the embodiment of the present application may be, for example, a server. Figure 7 A schematic diagram of the structure of a server provided in an embodiment of the present application is shown in FIG. Figure 7 As shown, for example, the server may be a storage server, and the server includes two power management modules 100. It should be noted that one mainboard may correspond to at least one power board. Figure 7 An example is shown in which one main board corresponds to one power board.

[0107] Based on the same inventive concept, the present application further provides a detection device suitable for 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 second demodulation circuit parses the third signal into a bus signal.

[0108] When the detection device is connected to the AC live and neutral wires, the second demodulation circuit begins operation. Because the power management module's second modulation circuit modulates the control unit's bus signal into a third signal and superimposes it on the AC power line, the second demodulation circuit can extract this third signal from the AC power line. The second demodulation circuit processes the acquired third signal and, based on its frequency characteristics, restores it to the original bus signal, extracting the control instructions, status information, and other data contained therein.

[0109] Administrators can connect the detection device to an AC power cord at any location with a mains power outlet in the computer room to remotely read and control data from various electronic devices (such as servers) in the computer room. This solution eliminates the need for network cables and switches, breaking through the limitations of traditional wiring methods, improving the convenience and efficiency of remote management, and reducing management costs.

[0110] In some optional embodiments, the detection device is further configured to send a control signal to the AC live wire and the AC neutral wire, wherein the control signal is configured to instruct the second modulation circuit to demodulate into a frequency adjustment signal and control the modulation frequency of the second modulation circuit.

[0111] When the detection device detects that the signals of multiple power management modules conflict on the power line, the signal processing unit analyzes the conflict and generates a control signal. The control signal is superimposed on the AC live wire and neutral wire through a coupling circuit and transmitted to each power management module via the power line network. The second modulation circuit of the power management module receives the control signal through the AC live wire and neutral wire, demodulates the control signal into a frequency adjustment signal, and dynamically adjusts its own modulation frequency based on the demodulated frequency adjustment signal, for example, adjusting the modulation frequency of 500MHz / 300MHz to 520MHz / 320MHz. 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.

[0112] The detection device can adjust the modulation frequency of each power management module in real time based on the actual signal conflict detected to avoid co-frequency interference. For example, in a high-density server room, different frequency channels can be automatically assigned to different cabinets. This application uses the detection device to remotely adjust the frequency parameters of the power management module, eliminating the need for on-site operation and reducing maintenance costs.

[0113] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0114] Professionals may further appreciate that the modules and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the above description has generally described the components and steps of each example according to their functions. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0115] The above is a detailed introduction to the storage component provided by the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only intended to help understand the method and core ideas of the present application. It should be pointed out that, for those skilled in the art, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A power management module, characterized in that: include: Motherboard; Power board; The power supply board is provided with a power supply unit and a first modulation circuit; the power supply board includes a power supply pin; The power supply unit is electrically connected to the first modulation circuit; the first modulation circuit is electrically connected to the power pin; the first modulation circuit is used to obtain the first signal of the power supply unit, and modulate the first signal into a second signal and transmit it to the power pin; The mainboard is provided with a control unit and a first demodulation circuit; the control unit and the first demodulation circuit are electrically connected; the power pin is 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 pin into the first signal and then transmit it to the control unit; 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 and output terminals; 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; the second voltage-frequency conversion module is used to modulate the data signal of the bus signal into a second signal.

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

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

4. The power management module according to claim 2, wherein: 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.

5. The power management module according to claim 2, wherein: The first modulation circuit further includes: A multiplexing module, wherein 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.

6. The power management module according to claim 2, wherein: Also 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 pin and the first power terminal of the motherboard; the fourth inductor is connected in series between the second power pin and the second power terminal of the motherboard; The third capacitor is connected in series between the first power pin and the first input end of the first demodulation circuit; the fourth capacitor is connected in series between the second power pin and the second input end 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, wherein the voltage input end of the first frequency-voltage conversion module is connected to the first power supply pin, and the voltage input end 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 a clock signal of a bus signal; the second frequency-voltage conversion module is used to demodulate the second signal into a data signal of the bus signal.

8. The power management module according to claim 1, wherein: Also comprising 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, and are used to obtain 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 the third signal to the AC live wire and the AC neutral wire.

9. The power management module according to claim 8, wherein: Also includes a fifth capacitor and a sixth capacitor; The fifth capacitor is connected in series between the first output end of the second modulation circuit and the AC live wire; the sixth capacitor is connected in series between the second output end 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 end of the third voltage-frequency conversion module is electrically connected to the serial communication protocol clock signal end of the control unit, and is used to obtain the clock signal in the bus signal of the control unit; the voltage input end of the fourth voltage-frequency conversion module is electrically connected to the serial communication protocol data signal end 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; and 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; the power supply board is also provided with an AC input terminal, and the AC 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 configured to obtain a control signal through the AC live wire and the AC neutral wire, and control a modulation frequency of the second modulation circuit based on the demodulated frequency adjustment signal.

13. An electronic device, characterized in that: The invention comprises a power management module as claimed in any one of claims 1 to 12.

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

15. The detection device according to claim 14, characterized in that: The detection device is further configured 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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