A startup peak-shifted power-on control circuit and method for equipment with multiple power requirements

Abstract

The present application relates to a startup staggered power-on control circuit and method for a device with multiple power requirements. The power-on control circuit includes a control module, a first voltage conversion module, a second voltage conversion module, a delay switch management module, and a power-on load module. The power output end of the first voltage conversion module is connected to the power input end of the first main load group, the power output end of the second voltage conversion module is respectively connected to the power input end of the priority delay load and the power input end of the MOS delay switch unit, the power output end of the MOS delay switch unit is connected to the power input end of the corresponding load to be delayed, and the third enable signal output end of the control module is connected to the enable signal input end of the MOS delay switch unit. By optimizing the load distribution when the power supply is started, it is avoided that the power supply system must use a power adapter and power chip with too high specifications to meet the short-term startup current demand, the power utilization efficiency is improved, and the over-configuration cost of the power supply system is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment startup power-on control, and in particular to a startup peak-shifted power-on control circuit and method for equipment with multiple power requirements. Background Art

[0002] At present, in a storage system with multiple devices, power-demanding devices (such as hard disks, external graphics cards, or external network cards) usually generate large instantaneous currents when starting up, and generate short-term high currents during the startup process. For example, a 2TB mechanical hard disk can have an instantaneous current of 2.5 amperes and a power consumption of 30 watts when starting up, while in normal operation, the current is only 1 ampere and the power consumption is only 12 watts;

[0003] like Figure 1 As shown, this means that if the power supply system is designed according to the maximum current when the hard disk is started, the specifications of the power adapter and power conversion chip need to be greatly improved to meet the high current demand at the moment of startup; for example, in a system equipped with 5 hard disks, the current demand increases from 5 amps (60 watts) calculated as 1 amp to 12.5 amps (150 watts), resulting in additional costs for the power adapter and power chip. However, these additional power demands are only short-term demands at startup, and the normal working stage does not consume so much power, thus forming a hidden waste. Summary of the invention

[0004] In order to solve the problem that devices with multiple power requirements generate instantaneous high current when starting, resulting in oversized power adapters and power chips, increased costs and power waste, the present application provides a startup staggered power-on control circuit and method for devices with multiple power requirements.

[0005] A startup staggered power-on control circuit for a device with multiple power requirements, the startup staggered power-on control circuit for a device with multiple power requirements comprises a power supply module, a control module, a first voltage conversion module, a second voltage conversion module, a delay switch management module and a power-on load module, the power-on load module comprises a plurality of power-requirement devices, the control module acquires device data of each of the power-requirement devices in real time on the one hand, and combines the respective power-requirement devices according to the device data on the other hand to generate a first main load group and a second main load group, wherein the second main load group comprises a priority delay load and one or more loads to be delayed;

[0006] The power output end of the power supply module is respectively connected to the power input end of the first voltage conversion module and the power input end of the second voltage conversion module, the power output end of the first voltage conversion module is connected to the power input end of the first main load group, the delay switch management module includes one or more MOS delay switch units, the power output end of the second voltage conversion module is respectively connected to the power input end of the priority delay load and the power input end of the MOS delay switch unit, the power output end of the MOS delay switch unit is connected to the corresponding power input end of the load to be delayed, the first enable signal output end of the control module is connected to the enable signal input end of the first voltage conversion module, the second enable signal output end of the control module is connected to the enable signal input end of the second voltage conversion module, and the third enable signal output end of the control module is connected to the enable signal input end of the MOS delay switch unit.

[0007] By adopting the above technical solution, the startup peak-shifting power-on control circuit of the multi-power demand device provided by the present application obtains the device data of the power demand device in real time, and reasonably divides these devices into the first main load group and the second main load group, thereby optimizing the startup sequence of the power supply system. In the second main load group, the control module further subdivides the devices into priority delay loads and to-be-delayed loads, ensuring that the key devices are powered first at startup, while the non-key devices are delayed to start according to the control signal, thereby avoiding multiple devices from starting at the same time and generating excessive instantaneous current; through the multiple MOS delay switch units in the delay switch management module, the control module can accurately control the timing of power output. The second voltage conversion module supplies power to the priority delay load, and controls the power supply of the to-be-delayed load through the MOS delay switch unit, ensuring that the devices are gradually started in a predetermined order, reducing the excessive load caused by the instantaneous current on the power adapter and the power chip, and avoiding the over-design of the power supply system and the waste of invalid power; the circuit design optimizes the load distribution when the power supply is started, avoiding the power supply system from having to use power adapters and power chips with too high specifications to meet the short-term startup current requirements, reducing system costs and improving power utilization efficiency. Through staggered power-on and delay control, the stable startup of the equipment is guaranteed, the over-configuration cost of the power supply system is reduced, and the efficient and stable operation of the power supply system is achieved.

[0008] Preferably, the first voltage conversion module includes a voltage conversion chip PU7002, a resistor PR7022, an inductor PL7002, an input filter unit and an output filter unit, the power input end of the input filter unit is connected to the power output end of the power supply module, the power output end of the input filter unit is connected to the power input end of the voltage conversion chip PU7002, the power output end of the voltage conversion chip PU7002 is connected to the first end of the inductor PL7002, the second end of the inductor PL7002 is connected to the power input end of the output filter unit, the power output end of the output filter unit is connected to the power input end of the first main load group, the first end of the resistor PR7022 is connected to the enable signal input end of the voltage conversion chip PU7002, and the second end of the resistor PR7022 is connected to the first enable signal output end of the control module.

[0009] By adopting the above technical solution and designing a first voltage conversion module, including a voltage conversion chip, a filter unit and an inductor, etc., the power supply voltage can be effectively converted and output stably, thereby providing a stable power supply for the first main load group, thereby ensuring that the load device obtains the required voltage at startup and avoiding unstable startup of the device due to voltage fluctuations; by monitoring the output voltage through a voltage acquisition network, the voltage change can be fed back in real time to ensure the stability and accuracy of the power supply output, thereby avoiding damage to the device or startup failure due to unstable voltage.

[0010] Preferably, the first voltage conversion module also includes a voltage acquisition network, which includes a resistor PR7026 and a resistor PR7028, the common node between the second end of the inductor PL7002 and the power input end of the output filter unit is connected to the first end of the resistor PR7026, the second end of the resistor PR7026 is connected to the first end of the resistor PR7028, the second end of the resistor PR7028 is grounded, and the common node between the second end of the resistor PR7026 and the first end of the resistor PR7028 is connected to the feedback signal input end of the voltage conversion chip PU7002.

[0011] By adopting the above technical solution and designing the feedback network in the voltage conversion module, accurate feedback of the voltage can be achieved through the adjustment of the resistance, ensuring the normal operation of the power conversion chip and effectively adjusting the voltage output, thereby ensuring that the device obtains a stable power supply during the startup process, reducing the fluctuations that may occur during the power conversion process, and avoiding power overload or equipment damage caused by unstable voltage.

[0012] Preferably, the MOS delay switch unit includes a MOS transistor Q94, a MOS transistor Q96, a resistor R4669 and a resistor R4668, a first conducting end of the MOS transistor Q94 is connected to the power output end of the second voltage conversion module, a second conducting end of the MOS transistor Q94 is connected to the power input end of the corresponding load to be delayed, a controlled end of the MOS transistor Q94 is connected to the first end of the resistor R4669, a second end of the resistor R4669 is connected to the first conducting end of the MOS transistor Q96, a second conducting end of the MOS transistor Q96 is grounded, a controlled end of the MOS transistor Q96 is connected to the third enable signal output end of the control module, a first end of the resistor R4668 is connected to the power output end of the second voltage conversion module, and a common node between the controlled end of the MOS transistor Q94 and the first end of the resistor R4669 is connected to the second end of the resistor R4668.

[0013] By adopting the above technical solution, by using a MOS delay switch unit and combining with the enable signal of the control module, the power supply of the second voltage conversion module can be accurately controlled, and each power-demanding device can be started on demand, thereby achieving a reasonable distribution of the power load, avoiding excessive current when multiple devices are started at the same time, and preventing the power supply system from malfunctioning due to excessive load; through delay switch control, the start-up sequence of the load to be delayed can be flexibly controlled to avoid instantaneous current shocks, ensuring that the system's power adapter and power chip are not damaged due to overload, thereby improving the system's operating reliability and the service life of the power supply.

[0014] A startup peak-shifted power-on control method for a device with multiple power requirements is applied to a startup peak-shifted power-on control circuit for a device with multiple power requirements. The control method comprises:

[0015] Identify the power demand devices in the computer that need to be powered on;

[0016] Acquire device data of each of the power demand devices;

[0017] Determining a corresponding power-on weight according to the device data;

[0018] According to the power-on weight, each of the power demand devices is combined to determine a corresponding power-on device combination, wherein the power-on device combination includes a first main load group and a second main load group, wherein the second main load group includes a priority delay load and one or more to-be-delayed loads;

[0019] A corresponding delay control signal is generated according to the combination of powered devices, and the delay control signal is used to control each of the power demand devices to start staggered power-on.

[0020] By adopting the above technical solution, by determining the device data of each power demand device in the control method and generating the corresponding power-on weight based on it, it is possible to assign a suitable startup sequence and priority to each device, thereby effectively avoiding the problem of instantaneous large current generated by the simultaneous startup of multiple devices; by grouping the devices according to weights to generate a first main load group and a second main load group, it is possible to reasonably allocate power resources to ensure that each device is started according to the optimal timing, reduce the load on the power system, improve power utilization efficiency, and reduce power specification requirements, thereby reducing the overall system cost.

[0021] Preferably, the step of determining the corresponding power-on weight according to the device data includes:

[0022] Determining type parameters and status parameters in the device data;

[0023] Determine the corresponding type weight based on the predetermined mapping relationship of the type parameters;

[0024] Based on the determined weight calculation model, each state parameter is assigned a corresponding initial weight, and the product of each state parameter and the corresponding state initial weight is added, and the sum of the additions is the state weight;

[0025] The type weight and the state weight are packaged to generate a power-on weight corresponding to the power demand device.

[0026] By adopting the above technical solution, by determining the power-on weight of the device according to the type parameters and status parameters in the device data, it is possible to accurately judge the power demand of each device at startup, thereby ensuring that the device is powered on on demand and avoiding unnecessary current shocks; by packaging the weights of the device type and status through a calculation model to generate power-on weights, it is possible to accurately control the startup sequence of the devices and prevent the situation where excessive current is caused by the simultaneous startup of multiple devices, thereby improving the stability of the power supply system and reducing power waste.

[0027] Preferably, the step of combining the power demand devices according to the power-on weights to determine a corresponding power-on device combination includes:

[0028] According to the weights of the types, the power demand devices are combined to determine a first main load group that needs to be powered on in time, and a second main load group that can be powered on with a delay;

[0029] Determining a power-on sequence of each of the power demand devices in the first main load group according to each of the state weights;

[0030] According to each of the state weights, the priority delayed load and the to-be-delayed load in the second main load group are determined.

[0031] By adopting the above technical solution, by dividing the power-demanding devices into a first main load group that needs to be powered on in time and a second main load group that can be powered on with a delay according to the type weight, the power-on sequence of the devices can be reasonably controlled, thereby reducing the instantaneous current impact on the power system during startup, and avoiding damage to the power adapter and power chip due to excessive load; by further adjusting the power-on sequence of each device according to the state weight, the startup timing can be more finely controlled, ensuring the stability of the power system and reducing unnecessary power waste.

[0032] Preferably, in the step of determining the priority delayed load and the load to be delayed in the second main load group according to each of the state weights, the load to be delayed includes a first delayed load, a second delayed load, ... and an N+1th delayed load, and the step further includes:

[0033] Determine the maximum instantaneous current the computer can supply;

[0034] Determine the instantaneous current required by each of the power demand devices in the second main load group according to each of the state weights, and determine the maximum instantaneous current required and the minimum instantaneous current required among each of the instantaneous current required;

[0035] Adding the maximum demand instantaneous current to the minimum demand instantaneous current, and determining whether the sum of the maximum demand instantaneous current and the minimum demand instantaneous current is greater than the maximum instantaneous current;

[0036] If the sum of the maximum instantaneous current demand and the minimum instantaneous current demand is less than or equal to the maximum instantaneous current demand, the power demand devices corresponding to the maximum instantaneous current demand and the minimum instantaneous current demand are all determined as priority delay loads;

[0037] If the sum of the maximum instantaneous current demand and the minimum instantaneous current demand is greater than the maximum instantaneous current demand, the power demand device corresponding to the maximum instantaneous current demand is determined as a priority delay load;

[0038] Determine the other demand instantaneous currents except the maximum demand instantaneous current and the minimum demand instantaneous current as secondary demand instantaneous currents, and arrange them according to the numerical values ​​of the secondary demand instantaneous currents to determine the secondary demand instantaneous current with the largest numerical value as the target demand instantaneous current;

[0039] Determine the number of times N that the delayed load is generated, and judge whether the sum of the target demand instantaneous current and the minimum demand instantaneous current is greater than the maximum instantaneous current. If it is greater than, determine the power demand device corresponding to the target demand instantaneous current as the N+1th delayed load, and redefine the new target demand instantaneous current for judgment. If it is less than or equal to, determine both the target demand instantaneous current and the power demand devices corresponding to the minimum demand instantaneous current as the N+1th delayed load, redefine the new target demand instantaneous current, and select a new minimum demand instantaneous current from the sub-demand instantaneous current for judgment with the new target demand instantaneous current.

[0040] By adopting the above technical solution, by calculating based on the instantaneous current required by the device to determine whether it exceeds the maximum instantaneous current, the delayed power-on strategy can be flexibly adjusted to ensure that the power adapter and power chip will not fail due to excessive load; by determining the number of times the delayed load is generated based on the calculation results, power resources can be reasonably allocated so that the device will not exceed the maximum current carrying capacity of the system when it starts, thereby avoiding power overload and equipment damage and improving system stability.

[0041] Preferably, the step of re-determining a new target instantaneous current demand and selecting a new minimum instantaneous current demand from the secondary instantaneous current demand comprises:

[0042] Re-determine a new target demand instantaneous current, add the new target demand instantaneous current and the actual demand instantaneous current, the actual demand instantaneous current being the sum of the target demand instantaneous current corresponding to the N+1th delayed load and the minimum demand instantaneous current;

[0043] Determine whether the sum of the new target instantaneous current demand and the actual instantaneous current demand is greater than the maximum instantaneous current;

[0044] If not, a new minimum required instantaneous current is selected from the sub-required instantaneous currents;

[0045] If so, the power demand devices corresponding to the new target demand instantaneous current are all determined as the N+1th delayed load, and a new target demand instantaneous current is re-determined for judgment until the sum of the new target demand instantaneous current and the actual demand instantaneous current is less than or equal to the maximum instantaneous current.

[0046] By adopting the above technical solution, by adding and judging the target demand instantaneous current and the minimum demand instantaneous current, the delayed power-on sequence of the equipment can be dynamically adjusted to ensure that the equipment can be reasonably allocated according to the maximum instantaneous current carrying capacity of the power supply system when it is started, thereby avoiding overload of the power supply system; by redetermining the target demand instantaneous current, the delayed power-on strategy can be flexibly adjusted to ensure proper current control when the equipment is started, avoid unnecessary current waste, and improve the operating efficiency of the power supply system.

[0047] Preferably, in the step of generating a corresponding delay control signal according to the power-on device combination, the delay control signal includes a timely power-on signal, a first delayed power-on signal, ... and an N+2th delayed power-on signal, and the step further includes:

[0048] If the powered device group is a first main load group, generating a timely power-on signal for timely powering on the first main load group;

[0049] If the powered-on device group is a priority delayed load in the second main load group, a first delayed power-on signal for priority delay is generated;

[0050] If the electrical equipment combination is the N+1th load to be delayed in the second main load group, a corresponding N+2 delayed power-on signal is generated, and the N+2 delayed power-on signal is used to control the corresponding MOS delay switch unit to delay powering on the N+1th load to be delayed.

[0051] By adopting the above technical solution, by generating corresponding delay control signals according to the combination of powered-on devices, the startup sequence of each power-demanding device can be accurately controlled to avoid the burden on the power system due to current shock when the device is started; by generating timely power-on signals, delayed power-on signals, etc., power resources can be reasonably allocated according to the power-on priority of different devices to ensure stable operation of the system, while reducing the selection requirements of power adapters and power chips, thereby saving costs.

[0052] In summary, the present application includes at least one of the following beneficial technical effects:

[0053] 1. The startup peak-shifting power-on control circuit for devices with multiple power requirements provided by the present application obtains the device data of the power demand devices in real time, and reasonably divides these devices into the first main load group and the second main load group, thereby optimizing the startup sequence of the power supply system. In the second main load group, the control module further subdivides the devices into priority delayed loads and to-be-delayed loads, ensuring that key devices are powered first at startup, while non-key devices are delayed in startup according to the control signal, thereby avoiding multiple devices starting at the same time and generating excessive instantaneous current;

[0054] 2. Through the multiple MOS delay switch units in the delay switch management module, the control module can accurately control the timing of power output. The second voltage conversion module supplies power to the priority delay load, and controls the power supply of the delayed load through the MOS delay switch unit, ensuring that the equipment starts up step by step in a predetermined order, reducing the excessive load on the power adapter and power chip caused by the instantaneous current, and avoiding over-design of the power system and waste of invalid power;

[0055] 3. This circuit design optimizes the load distribution when the power is started, avoiding the need for the power system to use power adapters and power chips with too high specifications to meet the short-term startup current requirements, reducing system costs and improving power efficiency. Through peak-shifting power-on and delay control, it not only ensures the stable startup of the equipment, but also reduces the over-configuration cost of the power system, and realizes efficient and stable operation of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 It is a specific structural block diagram of the startup peak-shifting power-on control method of the traditional multi-power demand equipment of the present application.

[0057] Figure 2 It is a specific structural block diagram of a startup peak-shifted power-on control circuit of a device with multiple power requirements in one embodiment of the present application;

[0058] Figure 3 It is a flowchart of a startup peak-shifted power-on control circuit of a device with multiple power requirements in one embodiment of the present application;

[0059] Figure 4 This is a partial circuit diagram of a first voltage conversion module in a startup peak-shifting power-on control circuit of a device with multiple power requirements in one embodiment of the present application;

[0060] Figure 5 This is a partial circuit diagram of a second voltage conversion module in a startup peak-shifting power-on control circuit of a device with multiple power requirements in one embodiment of the present application;

[0061] Figure 6 This is a partial circuit diagram of a delay switch management module in a startup peak-shifting power-on control circuit of a device with multiple power requirements in one embodiment of the present application;

[0062] Figure 7 It is a flow chart of a method for controlling the start-up peak-shifting power-on of a device with multiple power requirements in one embodiment of the present application;

[0063] Figure 8 This is a flowchart for implementing step S30 in a method for controlling the start-up peak-shifting power-on of a device with multiple power requirements in one embodiment of the present application;

[0064] Fig. 9It is an implementation diagram of step S40 in a method for controlling peak-shifted power-on of a device with multiple power requirements in one embodiment of the present application;

[0065] Fig.10 It is an implementation diagram of step S403 in a method for controlling peak-shifted power-on of a device with multiple power requirements in one embodiment of the present application;

[0066] Fig.11 It is an implementation diagram of step S4037 in a method for controlling peak-shifted power-on of a device with multiple power requirements in one embodiment of the present application;

[0067] Fig.12 It is an implementation diagram of step S50 in a method for controlling peak-shifted power-on of a device with multiple power requirements in one embodiment of the present application. DETAILED DESCRIPTION

[0068] The present application is further described in detail below in conjunction with the accompanying drawings.

[0069] In one embodiment, if Figure 2-Figure 3 As shown, the present application discloses a startup staggered power-on control circuit for a device with multiple power requirements, and the startup staggered power-on control circuit for a device with multiple power requirements includes a power supply module, a control module, a first voltage conversion module, a second voltage conversion module, a delay switch management module and a power-on load module, the power-on load module includes multiple power demand devices, the control module acquires the device data of each power demand device in real time on the one hand, and combines each power demand device according to the device data on the other hand to generate a first main load group and a second main load group, wherein the second main load group includes a priority delay load, and one or more loads to be delayed; the power output end of the power supply module is respectively connected to the power input end of the first voltage conversion module and the second voltage conversion module The power input terminal of the first voltage conversion module is connected, the power output terminal of the first voltage conversion module is connected to the power input terminal of the first main load group, the delay switch management module includes one or more MOS delay switch units, the power output terminal of the second voltage conversion module is respectively connected to the power input terminal of the priority delay load and the power input terminal of the MOS delay switch unit, the power output terminal of the MOS delay switch unit is connected to the power input terminal of the corresponding load to be delayed, the first enable signal output terminal of the control module is connected to the enable signal input terminal of the first voltage conversion module, the second enable signal output terminal of the control module is connected to the enable signal input terminal of the second voltage conversion module, and the third enable signal output terminal of the control module is connected to the enable signal input terminal of the MOS delay switch unit.

[0070] In this embodiment, in this circuit, the power supply module is responsible for providing a stable power output for the entire control circuit. The power output terminal of the power supply module is connected to the power input terminal of the first voltage conversion module and the power input terminal of the second voltage conversion module, indicating that the power supply module provides a power source for the two voltage conversion modules. The output terminal of the power supply module is connected to the input terminals of the two voltage conversion modules to provide the necessary power support for the two modules, ensuring that they can perform voltage conversion as needed. The first voltage conversion module converts the power of the power input terminal into a voltage suitable for the first main load group. These load devices need to be started according to the set priority, so the output terminal of the first voltage conversion module is connected to the power input terminal of the first main load group. In terms of power management, the control module plays a core role. The first enable signal output terminal of the control module is connected to the enable signal input terminal of the first voltage conversion module, which means that the control module can enable or disable the first voltage conversion module according to system requirements. The control module controls whether the first main load group can receive power from the power supply module by adjusting the enable signal of the first voltage conversion module. Similarly, the second enable signal output terminal of the control module is connected to the enable signal input terminal of the second voltage conversion module to control the working state of the second voltage conversion module, ensuring that the module performs voltage conversion according to demand and provides it to the load device of the next stage. The second voltage conversion module converts the input power into a voltage suitable for the second main load group (including priority delay load and delay load). Its output terminal is not only connected to the power input terminal of the priority delay load to ensure that the priority delay load is started at the specified time, but also connected to the power input terminal of the MOS delay switch unit, which is responsible for further power management. After receiving the enable signal from the control module, the MOS delay switch unit begins to control the power supply of the delay load to ensure that these loads are activated at the right time to avoid current shocks caused by powering on multiple devices at the same time. The output terminal of the MOS delay switch unit transmits the power output to the power input terminal of the delay load connected to it to start these loads step by step as needed. Under the coordination of the entire control circuit, the control module is connected to the enable signal input terminal of the MOS delay switch unit through its third enable signal output terminal, and the switch state of the delay switch unit is adjusted in real time to ensure that the load to be delayed will not be started at the same time as the load in the first main load group, thereby avoiding excessive instantaneous current and damage to the power adapter and power chip. This logic of the control module accurately controls the startup sequence of each load through intelligent judgment and delay mechanism, ensuring that power resources are optimally allocated, and the startup process of the system is smoother and more reliable. The design of the entire circuit ensures that the power supply and startup timing of different load groups will not conflict with each other, and through the delay switch management method, the instantaneous current is shared when multiple devices are started in parallel, avoiding power instability caused by too many loads starting at the same time during the startup phase of the system.The control module dynamically adjusts power distribution according to the needs of different loads, improving the efficiency and stability of the power system while reducing the cost of the power adapter and power chip.

[0071] In summary, the startup peak-shifting power-on control circuit of the multi-power demand device provided by the present application obtains the device data of the power demand device in real time, and reasonably divides these devices into the first main load group and the second main load group, thereby optimizing the startup sequence of the power supply system. In the second main load group, the control module further subdivides the devices into priority delay loads and to-be-delayed loads, ensuring that key devices are powered first at startup, while non-key devices are delayed to start according to the control signal, thereby avoiding multiple devices from starting at the same time and generating excessive instantaneous current; through the multiple MOS delay switch units in the delay switch management module, the control module can accurately control the timing of power output. The second voltage conversion module supplies power to the priority delay load, and controls the power supply to the to-be-delayed load through the MOS delay switch unit, ensuring that the devices are gradually started in a predetermined order, reducing the excessive load caused by the instantaneous current on the power adapter and the power chip, and avoiding the over-design of the power supply system and the waste of invalid power; the circuit design optimizes the load distribution when the power supply is started, avoiding the power supply system from having to use power adapters and power chips with too high specifications to meet the short-term startup current requirements, reducing system costs and improving power utilization efficiency. Through staggered power-on and delay control, the stable startup of the equipment is guaranteed, the over-configuration cost of the power supply system is reduced, and the efficient and stable operation of the power supply system is achieved.

[0072] Further, such as Figure 4 As shown, the first voltage conversion module includes a voltage conversion chip PU7002, a resistor PR7022, an inductor PL7002, an input filter unit and an output filter unit. The power input end of the input filter unit is connected to the power output end of the power supply module, the power output end of the input filter unit is connected to the power input end of the voltage conversion chip PU7002, the power output end of the voltage conversion chip PU7002 is connected to the first end of the inductor PL7002, the second end of the inductor PL7002 is connected to the power input end of the output filter unit, the power output end of the output filter unit is connected to the power input end of the first main load group, the first end of the resistor PR7022 is connected to the enable signal input end of the voltage conversion chip PU7002, and the second end of the resistor PR7022 is connected to the first enable signal output end of the control module.

[0073] In this embodiment, in this circuit structure, the main components of the first voltage conversion module include a voltage conversion chip PU7002, a resistor PR7022, an inductor PL7002, an input filter unit, and an output filter unit, which work together to achieve power conversion and stable power supply. First, the power input end of the input filter unit is connected to the power output end of the power supply module, indicating that the input filter unit receives an unfiltered power signal from the power supply module. The function of the input filter unit is to reduce the noise and pulsation in the output power of the power supply module through filtering, ensure the voltage is stable and smooth, and provide a clean power signal for subsequent voltage conversion. The power output end of the input filter unit is connected to the power input end of the voltage conversion chip PU7002, and transmits the filtered power signal to the voltage conversion chip. The function of the voltage conversion chip is to convert the input power signal and output a voltage suitable for the load device, usually a lower or more stable voltage. The power output end of the voltage conversion chip PU7002 is connected to the first end of the inductor PL7002, which indicates that the voltage conversion chip transmits the converted current to the inductor. Here, the role of the inductor is to smooth the current, store and release energy to reduce current fluctuations and improve power supply stability. The second end of the inductor is connected to the power input of the output filter unit to ensure that the current continues to pass through the filter for further processing. The role of the output filter unit is to further smooth the current, filter out the high-frequency noise that may remain, make the current more stable, and meet the requirements of the load. The power output of the output filter unit is connected to the power input of the first main load group, indicating that the output filter unit provides stable power to the first main load group, ensuring that the load group can work normally after receiving the stable voltage. In addition, the first end of the resistor PR7022 is connected to the enable signal input of the voltage conversion chip PU7002. The role of the resistor is to limit the current and cooperate with the control signal to adjust the enable signal of the voltage conversion chip. The second end of the resistor PR7022 is connected to the first enable signal output of the control module, which means that the control module controls the working state of the voltage conversion chip by sending an enable signal. If the control module sends an enable signal, the voltage conversion chip will be enabled, thereby providing the required voltage for the first main load group; if there is no enable signal, the voltage conversion chip remains disabled and does not provide voltage output. The function of the entire connection structure is to ensure that the first main load group can obtain a smooth and clean power supply when starting up by filtering, converting and stabilizing the power signal, thereby avoiding equipment abnormalities or failures caused by power fluctuations during the startup process. At the same time, through the enable signal of the control module, the start and stop of the voltage conversion chip can be accurately controlled to avoid current overload or power waste, and realize efficient and reliable power management.

[0074] Further, such as Figure 4As shown, the first voltage conversion module also includes a voltage acquisition network, which includes a resistor PR7026 and a resistor PR7028. The common node between the second end of the inductor PL7002 and the power input end of the output filter unit is connected to the first end of the resistor PR7026, the second end of the resistor PR7026 is connected to the first end of the resistor PR7028, the second end of the resistor PR7028 is grounded, and the common node between the second end of the resistor PR7026 and the first end of the resistor PR7028 is connected to the feedback signal input end of the voltage conversion chip PU7002.

[0075] In this embodiment, in this circuit structure, the first voltage conversion module further includes a voltage acquisition network, the core of which is composed of a resistor PR7026 and a resistor PR7028, which is used to monitor and adjust the voltage to ensure the feedback control accuracy of the voltage conversion chip. Specifically, the common node between the second end of the inductor PL7002 and the power input end of the output filter unit is connected to the first end of the resistor PR7026, which means that the inductor and the output filter unit form a current path, and the resistor PR7026 plays a role in measurement and voltage division. The second end of the resistor PR7026 is connected to the first end of the resistor PR7028, and the second end of the resistor PR7028 is grounded to form a voltage divider network. Through the voltage divider network, the voltage of the inductor PL7002 and the output filter unit can be fed back to the voltage acquisition network, thereby realizing accurate monitoring of the output voltage. This voltage feedback signal is transmitted to the second end of the resistor PR7026 through the common node, and then transmitted to the feedback signal input end of the voltage conversion chip PU7002 through the first end of the resistor PR7028. The voltage information received at the feedback signal input end of the voltage conversion chip PU7002 is used to adjust the voltage output, so that the voltage conversion chip dynamically adjusts the output voltage according to the feedback signal. This feedback control mechanism ensures the stability of the voltage and avoids the output of excessively high or low voltage, thereby ensuring that the load equipment can work normally within the specified voltage range. The role of the voltage acquisition network is to monitor the output voltage in real time, and through the feedback signal, the voltage conversion chip can adaptively adjust its output to ensure that the voltage provided by the power supply is always at a reasonable level. This dynamic adjustment helps to improve the accuracy and stability of the power supply and avoid load equipment failure or unstable operation due to unstable voltage; specifically, Figure 5 As shown, the working principle and specific structure of the second voltage conversion module are similar to those of the first voltage conversion module, and will not be elaborated herein.

[0076] Further, such as Figure 6As shown, the MOS delay switch unit includes a MOS transistor Q94, a MOS transistor Q96, a resistor R4669 and a resistor R4668. The first conduction end of the MOS transistor Q94 is connected to the power output end of the second voltage conversion module, the second conduction end of the MOS transistor Q94 is connected to the power input end of the corresponding load to be delayed, the controlled end of the MOS transistor Q94 is connected to the first end of the resistor R4669, the second end of the resistor R4669 is connected to the first conduction end of the MOS transistor Q96, the second conduction end of the MOS transistor Q96 is grounded, the controlled end of the MOS transistor Q96 is connected to the third enable signal output end of the control module, the first end of the resistor R4668 is connected to the power output end of the second voltage conversion module, and the common node between the controlled end of the MOS transistor Q94 and the first end of the resistor R4669 is connected to the second end of the resistor R4668.

[0077] In this embodiment, the main purpose of the MOS delay switch unit is to ensure the power-on sequence of each power demand device through delay control, so as to avoid the instantaneous large current caused by the simultaneous startup of multiple loads, which affects the power stability of the entire system. The unit is composed of MOS tube Q94, MOS tube Q96, resistor R4669 and resistor R4668, and is interconnected and coordinated with the second voltage conversion module, the load to be delayed and the control module. First, the first conduction end of the MOS tube Q94 is connected to the power output end of the second voltage conversion module, which indicates that the power provided by the second voltage conversion module is first transmitted to the MOS tube Q94 as a control signal source. The second conduction end of the MOS tube Q94 is connected to the power input end of the load to be delayed, ensuring that when the MOS tube Q94 is turned on, the power can be transmitted to the corresponding load to be delayed. The controlled end of the MOS tube Q94 is connected to the first end of the resistor R4669. The function of the resistor R4669 is to provide an appropriate voltage signal to the controlled end of the MOS tube Q94 so that the MOS tube Q94 can judge whether it is turned on according to the strength of the control signal. The second end of the resistor R4669 is connected to the first conduction end of the MOS tube Q96, so that the current signal can be transmitted from the MOS tube Q94 to the MOS tube Q96, which plays a role in signal amplification and control. The second conduction end of the MOS tube Q96 is grounded, which means that when the MOS tube Q96 is controlled to be turned on, the current will flow to the ground line through the MOS tube Q96, forming a closed-loop current path. The controlled end of the MOS tube Q96 is connected to the third enable signal output end of the control module. The control module sends a control signal through this port to determine when to start the MOS tube Q96, thereby indirectly controlling the conduction state of the MOS tube Q94. In addition, the first end of the resistor R4668 is connected to the power supply output end of the second voltage conversion module, which provides a stable power supply input for the resistor R4668. The second end of the resistor R4668 is connected to the common node between the controlled ends of the MOS tube Q94. The function of this configuration is to adjust the strength of the control signal by adjusting the value of the resistor R4668, thereby affecting the switching state of the MOS tube Q94 and the MOS tube Q96, and accurately controlling the delay process. Through this series of precise connections and voltage adjustments, the MOS delay switch unit can start the delayed loads in sequence according to the enable signal and delay strategy of the control module, avoiding the current shock caused by powering on multiple loads at the same time, thereby effectively ensuring the stable operation of the power supply system.

[0078] like Figure 7 As shown, a startup peak-shifted power-on control method for a device with multiple power requirements is applied to a startup peak-shifted power-on control circuit for a device with multiple power requirements. The control method includes:

[0079] S10. Determine the power-demanding devices in the computer that need to be powered on; in this embodiment, the power-demanding devices that need to be powered on refer to all devices that need to be powered on during the system startup process, including hard disks, external graphics cards, network cards, power adapters, etc. These devices may need to be powered on sequentially when the computer or other system starts to ensure normal operation. First, the system scans the status of all connected devices through a hardware or software interface, and determines which devices request to be started or are ready to be connected to the power supply. For example, the computer may use the motherboard's sensors or power management controller to identify whether there are devices such as hard disks, optical drives, USB devices, etc. that need to be started. Each device will be marked as a device that needs to be powered on according to its power requirements, and the system will also determine the device's startup priority and power requirements in this step;

[0080] Specifically, through the coordination of hardware and software, all devices in the system that need to be powered on are identified, and power is ensured to be provided to them only under appropriate conditions. This process is usually identified and determined in the following ways: First, the system scans all connected devices in the computer through the hardware interface. In a computer, common power demand devices include the motherboard, hard disk, graphics card, network card, external USB device, power adapter, etc. These devices have different power requirements and each needs to obtain power at a specific time. The system confirms which devices need to be powered on by detecting the power interface status of each device, such as communicating with the power management module of each device through the I2C or SPI protocol, or checking the power status through the motherboard sensor. Next, the system obtains the status information of each device. This status information is usually obtained through sensors or control interfaces, including whether the device is in an enabled state, whether the device is ready to connect to the power supply, and the power demand and operating current of the device. For example, the hard disk usually has a startup signal. When the hard disk is ready to connect to the power supply, the system can detect this signal and determine that the hard disk needs to be powered on. Similarly, the power management controller of the motherboard provides signals about whether devices such as the CPU and the power module need to be powered on. In addition, the system also needs to determine whether the device meets the startup conditions. For example, some devices may need to be powered on only when the system starts, while others can be powered on dynamically during system operation. For devices that need to be powered on at startup, the system will determine whether they should be powered on first based on the hardware preset rules. For example, the motherboard and processor usually need to be powered on first, while graphics cards, hard drives, external devices, etc. may be connected to the power supply in sequence after the main system starts. In this step, the control module will also decide whether the device should be connected to the power supply during system initialization based on the importance, power requirements and startup sequence of the device. The system will evaluate the power requirements of the device to avoid multiple high-power demand devices being connected to the power supply at the same time, causing power overload. Therefore, this step not only includes the detection of device status, but also involves the execution of the system power management strategy to ensure a reasonable power-on sequence and avoid power conflicts between devices. Finally, through the above process, the system can determine which devices need to be powered on during the startup process and include them in the list of devices to be powered on. This process is not only about identifying devices, but also about arranging the power-on sequence reasonably to ensure that the device can start stably and avoid power fluctuations or instantaneous current shocks.

[0081] S20. Obtain device data of each power demand device; in this embodiment, device data refers to detailed information related to each power demand device, mainly including the power demand, voltage requirement, startup current, working delay, etc. of the device. The control module obtains the status information of each device through the system's built-in sensors, hardware interfaces or drivers. For example, a hard disk may require a higher startup current, an external graphics card may require a stable voltage supply, and some other peripheral devices may require a lower current. In this step, the control module collects the operating voltage, current and dynamic requirements of each device, analyzes the current changes during its startup process, and ensures that no excessive current shock is generated. This process is crucial to the entire startup process because the peak startup current of the device may be much higher than the operating current.

[0082] Specifically, in the process of acquiring the device data of each power demand device, the system will communicate with the power demand device through a series of hardware interfaces to collect relevant information of each device. First, the system will use the central processing unit (CPU) or embedded controller to exchange data with the power management module or the status monitoring unit of the device through the communication protocol. The device data usually includes parameters such as the power demand of the device, the current working status, whether the device has been started, the load information of the device, and the temperature of the device. This information is crucial for subsequent power distribution and power-on control. At the hardware level, the system usually communicates with the sensors on the power demand device through a standard bus interface (such as I2C, SPI, SMBus, etc.). These sensors or controllers can monitor the status of the device in real time, such as current, voltage, temperature, etc., and feed back these data to the main control module. For more complex devices (such as graphics cards, hard disks, etc.), they usually have dedicated power management chips or modules, which can not only provide power switching and adjustment functions, but also monitor the operating status of the device in real time, and transmit these status data to the main control system through the communication protocol. The system may also obtain device data through the computer's hardware abstraction layer (HAL) or the device driver provided by the operating system. The operating system will identify the current status of the device through each device driver, and the controller will regularly report the real-time power consumption and health status of the device to the main system. These data are usually reported when the device is started or at a predetermined period, and are stored and processed by the system so that they can be called and analyzed when needed. In addition to communication protocols and hardware interfaces, the control module will also cooperate with the power management unit to confirm the real-time power status of each power demand device. The power management unit usually includes some voltage and current sensors to monitor the power demand and actual working status of the device in real time. These power management units will not only feedback the voltage and current of the current device, but also provide relevant data on whether the device is in standby, startup or running state, which is crucial for determining the status of the power demand device. Once the status data of the device is obtained, the control module will organize and process this data to generate a device data list containing all power demand devices. This data list includes not only the basic information of the device, but also key information such as their power demand priority and whether they have been started, providing data support for subsequent power-on control. In this way, the system can accurately grasp the status and working requirements of each power demand device, thereby providing a basis for subsequent startup peak-shifting power-on control.

[0083] S30. Determine the corresponding power-on weight according to the device data; in this embodiment, the power-on weight is a value comprehensively evaluated based on the device power demand, current characteristics and device importance. Each power demand device is assigned a power-on weight according to its specific current demand and voltage requirements. The control module calculates the priority of the device based on the device data. For example, devices such as hard disks and graphics cards with high power requirements usually require higher weights and are started first to prevent the devices from not working properly due to unstable voltage, while devices with smaller power requirements can be assigned lower weights and started in order. The system will arrange the power-on time for each device according to these weights to avoid multiple high-power devices starting at the same time, causing excessive power current load. Through this weight mechanism, the system can effectively schedule the startup of the device and ensure the stability of the power supply.

[0084] S40. According to the power-on weight, each power demand device is combined to determine the corresponding power-on device combination, and the power-on device combination includes a first main load group and a second main load group, wherein the second main load group includes a priority delay load and one or more to-be-delayed loads; in this embodiment, the control system will group each power demand device according to the above weight mechanism to generate a power-on device combination. The devices are divided into a first main load group and a second main load group, wherein the second main load group includes a priority delay load and one or more to-be-delayed loads. The first main load group is usually those devices that need to be powered on the earliest, such as system motherboards, power modules, etc. These devices require a stable power supply at startup, and they will obtain priority power supply in the initial stage. The priority delay loads in the second main load group refer to some devices that need to be started with a slight delay, such as graphics cards, external hard disks, etc. These devices have a large current demand, but do not need to be powered on at the initial startup. The to-be-delayed loads are those devices that can be started after the system has been running for a certain period of time, such as some peripherals or additional hardware. Through this grouping method, the system can reasonably arrange devices with larger power requirements and devices with smaller power requirements, thereby reducing the current impact when the system starts.

[0085] S50, according to the combination of powered-on devices, a corresponding delay control signal is generated, and the delay control signal is used to control each power demand device to start up and power on at off-peak times. In this embodiment, the delay control signal refers to a signal generated according to the combination of powered-on devices when the system is started, and is used to control the power-on sequence of the devices. The delay control signal will be sent through the control module to adjust the startup time of each power demand device. Specifically, the control module will allocate delay time to each group of devices in turn according to the device grouping, and control the power-on sequence of the devices according to the delay time. For example, the devices of the first main load group will receive power first to ensure that core devices such as the motherboard and CPU can start normally; while the priority delay loads in the second main load group will start slightly later, and the control module will send a delay signal to control the power supply of these devices to start after the first main load group starts. The delay load will be further delayed after the priority delay load starts. This control mechanism ensures that each device will not cause current overload or voltage fluctuation during the startup process, thereby ensuring the stability of the system power supply and the normal operation of each device.

[0086] In one embodiment, if Figure 8 As shown, in step S30, i.e., the step of determining the corresponding power-on weight according to the device data, it includes:

[0087] S301, determine the type parameter and state parameter in the device data; in this embodiment, the step of determining the type parameter and state parameter in the device data includes obtaining detailed information related to each power demand device from each power demand device, wherein the type parameter refers to the category to which the device belongs, such as a hard disk, a display, a computer host, etc., and the state parameter refers to the current working state of the device, such as whether it is in standby, running or shutdown state. Each device may have different power consumption requirements and startup characteristics when working, and the type parameter and the state parameter jointly determine the power demand characteristics of the device. Specifically, the type parameter can reflect the basic requirements of the device for power supply, while the state parameter can dynamically reflect the current workload and operating state of the device. These data are collected in real time by the device monitoring unit and transmitted to the control module for processing.

[0088] Specifically, the type parameter can determine the external graphics card or external network card connected through the PCIE (a high-speed serial computer expansion bus standard) X16 slot. The external graphics card and external network card usually require instant response when working, and need to be ready for graphics processing or network communication when starting. The graphics card needs sufficient power to drive the graphics processing unit (GPU) and video output when starting. The GPU requires a large instantaneous current when initializing and rendering graphics, especially on high-performance graphics cards. The power supply must quickly provide stable voltage and current at startup. Although the power requirements of network cards are not as high as graphics cards, they still require a stable power supply to ensure the initialization of the network interface and data transmission. Once the network card is inserted and connected to the network, it needs to start working and transmit data traffic. The stability and timeliness of the power supply are crucial to its normal operation. Since the graphics card and network card involve instant communication or graphics output, their power requirements are very dependent on the stability at startup and cannot wait. Therefore, these devices usually require immediate power supply in the early stages of the host system startup to ensure that they can be initialized and start working properly. Although hard disks (especially mechanical hard disks) require a large instantaneous current when starting, the current demand is very short. Delayed power supply can be used to avoid the current shock caused by the simultaneous startup of multiple hard disks. In addition, the startup process of the hard disk does not involve real-time data processing or graphic output, so delayed power supply can be used to balance power requirements and avoid waste.

[0089] S302. Determine the corresponding type weight based on the mapping relationship predetermined by the type parameters; in the present embodiment, in the step of determining the corresponding type weight based on the mapping relationship predetermined by the type parameters, the control module will use the predefined mapping rules to associate the type parameters of the device with the corresponding type weight. Each device type may have different power requirements, and even have different power requirements in different working modes. For example, the power requirements of hard disks and graphics cards vary due to different working states. Therefore, through this type mapping relationship, the control module can assign a basic weight to each device type, and this weight represents a basic value of the power requirement when the device is started. The mapping relationship is usually calculated through engineering tests or simulations based on parameters such as the power requirement, startup current, and power consumption during operation of the device. These basic data provide the basis for subsequent precise control.

[0090] S303, based on the determined weight calculation model, assign corresponding initial weights to each state parameter, add the products of each state parameter and the corresponding state initial weight, and the sum is the state weight; in this embodiment, based on the determined weight calculation model, assign corresponding initial weights to each state parameter, add the products of each state parameter and the corresponding state initial weight, and the sum is the state weight, the control module will calculate according to the current state information of the device. The state parameter will be converted into an initial weight value, and the state weight is usually related to factors such as the load state, temperature, and power consumption of the device. For example, when the device is in standby mode, its power demand is low, so its state weight is also low; when the device is in operation, its state weight may be high. Then, the control module will multiply each state parameter with its corresponding initial weight to obtain a weighted state value, and then add the state weight values ​​of all devices to obtain the total state weight. This method can make the power demand of the device at startup more accurately reflected, thereby avoiding the power supply burden caused by excessive power demand.

[0091] Specifically, the system needs to collect and integrate the key attribute data (i.e., status parameters) of each hard disk, which may come from sources such as the hard disk specification document, SMART data, and real-time current monitoring. Common hard disk attributes include: startup current, the instantaneous current when the hard disk starts; working current: the current consumption of the hard disk when it is working normally; rotation speed, the rotation speed of the hard disk, which affects the size of the startup current and working current; capacity, the capacity of the hard disk, usually a hard disk with a larger capacity requires a higher startup power; hard disk type, the power consumption characteristics of mechanical hard disks and solid-state hard disks vary greatly, and SSDs generally have lower power consumption; in order to reasonably integrate the attribute data of different hard disks, it is necessary to standardize these data and assign corresponding weights to different attributes; through the collected hard disk data and the corresponding weights, the system can establish a model to calculate the comprehensive power demand or comprehensive impact score of each hard disk. The following is an example of a simple weight calculation model:

[0092] A1: startup current; A2: working current; A3: rotation speed; A4: capacity; A5: hard disk type (HDD / SSD); the state weight can be expressed as:

[0093] S=w1×A1+w2×A2+w3×A3+w4×A4+w5×A5, where w1, w2, w3, w4, w5 are the initial weights of different state parameters, which are set according to actual needs.

[0094] S304 , packaging type weights and status weights to generate power-on weights for devices with corresponding power requirements.

[0095] In one embodiment, if Fig. 9As shown, in step S40, that is, combining the various power demand devices according to the power-on weights to determine the corresponding power-on device combination, the step includes:

[0096] S401. According to the weight of each type, various power demand devices are combined to determine the first main load group that needs to be powered on in time, and the second main load group that can be powered on with a delay; in this embodiment, first, the type weight of each device is classified, and all devices that need to be powered on first are divided into the first main load group. These devices are usually critical to the operation of the system or are not sensitive to delays. For example, external graphics cards or external network card devices often need to be powered on as early as possible to ensure their operation due to their impact on system performance. Other power demand devices are divided into the second main load group according to different current requirements and load characteristics. These devices can be powered on with a slight delay after the system is started. Through such a combination, the problem of power instability caused by the instantaneous increase in power demand when the device is started can be better avoided;

[0097] Specifically, the process of determining the first main load group and the second main load group according to the type weight of each device is mainly divided according to the power demand of the device and the timeliness requirement of power at startup. First, the type weight of the device reflects the urgency of the power demand of the device during the startup process. The devices that need to be powered on in time are usually those that have a greater impact on system performance, such as external graphics cards, external network cards, etc. The working status of these devices requires that they can quickly obtain stable power supply at startup to ensure that the system can quickly respond to user needs and avoid performance degradation or startup failure caused by delays. Therefore, these devices will be assigned to the first main load group, and their power demand is considered to be a higher priority. On the other hand, the second main load group includes those devices that can be powered on with a delay at startup. These devices usually do not have high requirements for the timeliness of system startup, or their startup has little impact on the overall performance of the system. For example, some hard disks or non-critical auxiliary devices, even if these devices are slightly delayed in startup, will not have a significant impact on the normal operation of the system. Therefore, they are divided into the second main load group, and their power-on time can be adjusted according to actual conditions to avoid powering on at the same time as other important equipment and reduce the risk of current shock. In this way, the control system can reasonably allocate equipment to different load groups according to the type weight of the equipment to ensure that key equipment can obtain power support in time, while other equipment can delay power-on as needed, thereby optimizing power use, avoiding current shock, and improving the stability of system startup.

[0098] S402. Determine the power-on order of each power demand device in the first main load group according to each state weight; in this embodiment, the devices in the first main load group are sorted according to their state weight values. The calculation of the state weight takes into account factors such as the operating state of the device, the workload, and the dependency on other devices. Devices with higher state weights will be started first to ensure that key components in the system can be put into operation in a timely manner. For example, an external graphics card may be part of the first main load group and has a higher state weight, so it will be powered on before other load devices, thereby ensuring that tasks such as graphics rendering can be started smoothly. Through this measure, the startup order of each device can be effectively coordinated, unnecessary load conflicts can be avoided, and the power demand can be ensured to be stable.

[0099] Specifically, similar to the principle of the MOS delay switch unit, precise delay control can be used to manage the startup sequence of the devices. In the first main load group, generally speaking, the number of power demand devices in the first main load group is not large, and the delay method is similar to the principle of the MOS delay switch unit. The startup of each device can be controlled by fine-tuning the delay to ensure that there is no conflict in the startup timing between devices. Specifically, after some devices are started, the delay switch unit can be used to provide appropriate delays for subsequent devices, so that the power supply of these devices can be gradually connected after the system is stable, avoiding the impact of instantaneous excessive current on the power supply system.

[0100] S403. Determine the priority delayed loads and the loads to be delayed in the second main load group according to the weights of each state. In this embodiment, the devices in the second main load group are divided according to their respective state weights to determine which devices need delayed startup and which devices can be started at a later stage. Priority delayed loads are usually those that have little impact on the system load at the initial startup, or do not affect the overall performance of the system after delayed startup. Loads to be delayed are those that have no significant impact on the system even if delayed startup. By precisely controlling the devices with delayed power-on in this way, it can be ensured that current shocks are effectively avoided, while also avoiding the problem of power supply instability caused by too many devices starting at the same time. This control method helps to improve the startup efficiency of the system and the utilization rate of the power supply.

[0101] In summary, by dividing the power-demand devices into a first main load group that needs to be powered on in time and a second main load group that can be powered on with a delay according to the type weight, the power-on sequence of the devices can be reasonably controlled, thereby reducing the instantaneous current impact on the power system during startup and avoiding damage to the power adapter and power chip due to excessive load; by further adjusting the power-on sequence of each device according to the state weight, the startup timing can be more finely controlled, ensuring the stability of the power system and reducing unnecessary power waste.

[0102] In one embodiment, if Fig.10 As shown, in step S403, i.e., in the step of determining the priority delayed load and the to-be-delayed load in the second main load group according to each state weight, the to-be-delayed load includes the first delayed load, the second delayed load, ... and the N+1th delayed load, the step further includes:

[0103] S4031. Determine the maximum instantaneous current that the computer can provide; in this embodiment, it involves evaluating the load capacity of the power supply system. The power supply of the computer will experience changes in instantaneous current during the startup process. Especially when multiple power-demanding devices are started at the same time, the instantaneous current may exceed the carrying capacity of the power supply. Therefore, an upper limit of the maximum instantaneous current must be calculated and set in advance to ensure the stability of the power supply system. In this embodiment, the maximum instantaneous current is based on the rated output capacity of the power adapter and the power supply design parameters. A critical value is calculated through testing or theoretical derivation. This value will serve as a benchmark for subsequent current distribution and delay control.

[0104] S4032. Determine the instantaneous current required for each power demand device in the second main load group according to each state weight, and determine the maximum instantaneous current required and the minimum instantaneous current required in each instantaneous current required; in this embodiment, to ensure that the current required by each device at startup can be met. The current demand is not only related to the power consumption of the device, but also to the instantaneous current required when the device starts. In this step, the instantaneous current demand at startup can be calculated based on the device characteristics of each power demand device, such as the current specification of the power input terminal and the device type. The instantaneous current required for each device can be obtained by testing the startup characteristics of the device or referring to the technical parameter manual of the device. By obtaining these data, the current required for each device at startup can be clarified, thereby providing necessary data support for subsequent judgment and delay control.

[0105] S4033, add the maximum demand instantaneous current and the minimum demand instantaneous current, and judge whether the sum of the maximum demand instantaneous current and the minimum demand instantaneous current is greater than the maximum instantaneous current; in this embodiment, the maximum demand instantaneous current and the minimum demand instantaneous current are determined by sorting and analyzing the demand instantaneous currents of each power demand device to obtain the device that needs the most current and the device that needs the least current. The maximum demand instantaneous current represents the device that needs the most current during the startup process, while the minimum demand instantaneous current represents the device that needs the least current. The determination of the two is classified and analyzed according to the startup characteristics and current demand of the device. For example, the demand instantaneous current of an external graphics card may be large, while the demand instantaneous current of an ordinary hard disk may be small. Therefore, through such a comparison, the maximum and minimum current demand values ​​can be obtained respectively. Judging whether the sum of the maximum demand instantaneous current and the minimum demand instantaneous current is greater than the maximum instantaneous current is a key step in verifying the load capacity of the power supply system. If the total current obtained by adding the maximum instantaneous current demand and the minimum instantaneous current demand exceeds the maximum instantaneous current that the power system can withstand, then it is necessary to distribute the equipment startup sequence through delay control to avoid overload problems in the power system. If the total current added does not exceed the maximum instantaneous current, it means that the equipment startup conditions that can meet the maximum and minimum demand currents can be started together without additional delay.

[0106] S4034. If the sum of the maximum instantaneous current demand and the minimum instantaneous current demand is less than or equal to the maximum instantaneous current, the power demand devices corresponding to the maximum instantaneous current demand and the minimum instantaneous current demand are both determined as priority delay loads; in this embodiment, at this time, the two devices can be considered as devices with relatively low current impact, and they can be started synchronously without causing excessive instantaneous current burden on the power supply system. In this way, the device with priority delay load will be assigned to the first stage of power-on to ensure that the current change during its startup process is relatively stable.

[0107] S4035. If the sum of the maximum instantaneous current demand and the minimum instantaneous current demand is greater than the maximum instantaneous current, the power demand device corresponding to the maximum instantaneous current demand is determined as the priority delay load; in this embodiment, if the sum of the maximum instantaneous current demand and the minimum instantaneous current demand is greater than the maximum instantaneous current, the power demand device that requires the maximum instantaneous current needs to be determined as the priority delay load. In this case, the startup sequence of the device will be adjusted according to the current demand to ensure that the device with the maximum instantaneous current is delayed. This is to avoid the device from generating excessive current shock to the power system when starting, thereby affecting the stable operation of other devices.

[0108] S4036. Determine the instantaneous currents of other demands except the maximum demand instantaneous current and the minimum demand instantaneous current as the secondary demand instantaneous currents, and arrange them according to the numerical values ​​of the respective secondary demand instantaneous currents to determine the secondary demand instantaneous current with the largest numerical value as the target demand instantaneous current; in this embodiment, the secondary demand instantaneous currents of other power demand devices are determined by analyzing the demand currents of all devices, finding the remaining devices except the maximum demand and the minimum demand, and sorting the current demands of these devices. The secondary demand instantaneous currents represent those devices that have relatively small demand currents but still need to be reasonably scheduled. Sorting these devices according to the current demand size helps to reasonably allocate delay control and avoid unnecessary current shocks.

[0109] S4037, determine the number of times N that the load to be delayed is generated, and judge whether the sum of the target demand instantaneous current and the minimum demand instantaneous current is greater than the maximum instantaneous current. If it is greater than, the power demand device corresponding to the target demand instantaneous current is determined as the N+1th delayed load, and the new target demand instantaneous current is re-determined for judgment. If it is less than or equal to, the power demand devices corresponding to the target demand instantaneous current and the minimum demand instantaneous current are both determined as the N+1th delayed load, and the new target demand instantaneous current is re-determined, and the new minimum demand instantaneous current is selected from the sub-demand instantaneous current to be judged with the new target demand instantaneous current. In this embodiment, the number of times N that the load to be delayed is generated is determined based on the load capacity of the power supply system and the current demand of each device. If the sum of the target demand instantaneous current and the minimum demand instantaneous current exceeds the maximum instantaneous current, it means that the system needs more delayed loads to disperse the current impact. Therefore, the device corresponding to the target demand instantaneous current will be assigned as the N+1th delayed load. By judging the remaining devices and determining the new delayed load based on the sum of the target demand instantaneous current and other demand currents, the power system can be effectively prevented from being overloaded. This process is repeated until the current demand of all devices is reasonably distributed and overload is avoided.

[0110] In one embodiment, if Fig.11 As shown, in step S4037, that is, the step of re-determining a new target instantaneous current demand and selecting a new minimum instantaneous current demand from the sub-instantaneous current demand, the following steps are included:

[0111] S40371. Re-determine the new target demand instantaneous current, add the new target demand instantaneous current and the actual demand instantaneous current, the actual demand instantaneous current is the sum of the target demand instantaneous current corresponding to the N+1th delayed load and the minimum demand instantaneous current; in this embodiment, the step of re-determining the new target demand instantaneous current is performed based on the delay control data of the previous step and the actual startup status of the power demand device. The target demand instantaneous current represents the total current demand of the power demand device at the current stage. By adding the new target demand instantaneous current and the actual demand instantaneous current, the new current demand sum is obtained. The actual demand instantaneous current refers to the sum of the current required by the current device (such as the N+1th delayed load), including the sum of the target demand instantaneous current and the minimum demand instantaneous current. When re-determining the new target demand instantaneous current, the system needs to calculate the latest current demand based on the current device demand and the dynamic changes of the power-on process, and prepare for the next round of delay control. This calculation helps to dynamically adjust the power load to avoid exceeding the maximum carrying capacity of the power supply.

[0112] S40372. Determine whether the sum of the new target demand instantaneous current and the actual demand instantaneous current is greater than the maximum instantaneous current; in this embodiment, the step of determining whether the sum of the new target demand instantaneous current and the actual demand instantaneous current is greater than the maximum instantaneous current is used to ensure the stability of the power supply system. During the power-on process, the system will continuously adjust the power-on sequence and current requirements of the equipment to ensure that the total current does not exceed the maximum instantaneous current of the power supply. If the sum of the new target demand instantaneous current and the actual demand instantaneous current is greater than the maximum carrying capacity of the power supply system, it means that the current load configuration may cause the power supply system to overload. At this time, it is necessary to readjust the load sequence or further delay the power-on of certain devices to ensure that the system does not fail due to overload.

[0113] S40373. If not, a new minimum demand instantaneous current is selected from the secondary demand instantaneous current; in this embodiment, if the sum of the new target demand instantaneous current and the actual demand instantaneous current does not exceed the maximum instantaneous current, a new minimum demand instantaneous current can be selected from the secondary demand instantaneous current. This is because in the previous round of calculations, it has been determined which devices are to be delayed, and the current requirements of these devices can be compared to select a new minimum demand instantaneous current. Selecting a new minimum demand instantaneous current helps the system to more accurately control the order in which the devices start up, ensuring that the new power load configuration can reasonably allocate current resources without exceeding the maximum instantaneous current.

[0114] S40374. If so, all power demand devices corresponding to the new target demand instantaneous current are determined as the N+1th delayed load, and a new target demand instantaneous current is re-determined for judgment until the sum of the new target demand instantaneous current and the actual demand instantaneous current is less than or equal to the maximum instantaneous current. In this embodiment, during this process, the system will continuously adjust the power-on sequence of the devices until a suitable balance point is found so that the total current demand does not exceed the maximum carrying capacity of the power supply system. Each time the target demand instantaneous current is re-determined, the system will adjust the power-on plan of the device according to the current current demand to avoid excessive instantaneous current.

[0115] Specifically, in the process of determining the priority delay load and the load to be delayed, the system combines the state weight of each power demand device and the maximum instantaneous current limit. First, the system obtains the state weight of each device and sorts them according to the current demand of the device. Assume that in a specific system, there are several power demand devices with different state weights and instantaneous current demands.

[0116] For example, assume that the power demanding devices in the system include six devices A, B, C, D, E, and F.

[0117] First, according to the type weight, it is determined that device F is an external graphics card, and devices A, B, C, D, and E are mechanical hard disks, which should be assigned to the first main load group for timely power-on. At this time, devices A, B, C, D, and E are assigned to the second main load group for delayed power-on. The instantaneous current required by device A is 10A, the instantaneous current required by device B is 15A, the instantaneous current required by device C is 5A, the instantaneous current required by device D is 20A, and the instantaneous current required by device E is 8A. The system will first determine which devices belong to the priority delayed load based on the status weights and current requirements of these devices;

[0118] For example, at this time, the maximum instantaneous current demand is for device D, and the minimum instantaneous current demand is for device C, and the sum of the two is 25A. If the maximum instantaneous current is 30A, because 25A is less than 30A, it can be determined that device D and device C are both priority delay loads. If the maximum instantaneous current is 20A, because 20A is less than 30A, it can be determined that device D is the priority delay load. At this time, the priority delay load can be powered on at a staggered peak with the first main load group, or can be powered on with priority delay;

[0119] After determining the priority delay load, the secondary demand instantaneous current is device A, device B, and device E, and the numerical order is device B (15A), device A (10A), and device E (8A). If the maximum instantaneous current is 30A, it is necessary to determine that the target demand instantaneous current is device B, and the minimum demand instantaneous current is device E. The sum of the two is 23A. Because 23A is less than 30A, device B and device E are determined as the first delay load. If the maximum instantaneous current is 15A, device B is determined as the first delay load, and a new target demand instantaneous current is re-determined for judgment. If the maximum instantaneous current is 15A, device B is determined as the first delay load, and a new target demand instantaneous current is re-determined for judgment. The instantaneous current is 35A. After determining that device B and device E are the first delay load, device A can be added. At this time, the added sum reaches 33A, which is less than 35A, so device A can also be determined as the first delay load at the same time. If not, device A is determined to be the second delay load. This judgment is also applicable to determining the priority delay load, that is, the content of steps S4071-S4074, that is, if the maximum instantaneous current is 40A, the sum of devices D, C and A is 40A, which is equal to the maximum instantaneous current of 40A, so device A can also be determined as the priority delay load at this time.

[0120] In one embodiment, if Fig.12 As shown, in step S50, i.e., in the step of generating a corresponding delay control signal according to the power-on device combination, the delay control signal includes a timely power-on signal, a first delayed power-on signal, ... and an N+2th delayed power-on signal, and the step further includes:

[0121] S501. If the power-on devices are combined into the first main load group, a timely power-on signal is generated for timely powering on the first main load group; in this embodiment, the function of the timely power-on signal is to immediately activate the power-demanding devices in the first main load group. These devices are usually those that have a large current demand or have a small impact on the overall operating stability of the system when starting up, and they need to be powered on quickly. The signal will be sent to the devices of the first main load group through the control module, so that they can start without delay when the power supply can provide sufficient current. For example, assuming that the first main load group contains several external graphics cards, these devices require stable current and timely supply when starting up, and if these devices are not powered on in time, they may affect the normal operation of the computer. By transmitting the timely power-on signal, it can be ensured that these devices are not affected by the delay control, and are connected to the power supply and started as soon as possible.

[0122] S502. If the power-on device group is a priority delayed load in the second main load group, a first delayed power-on signal for priority delay is generated; in this embodiment, the priority delayed loads are those devices that may have a greater impact on the system power demand at startup, or devices that have higher requirements for the stability of the entire system at startup. In order to avoid a sudden increase in current caused by the startup of these devices, the generated first delayed power-on signal will be sent to these priority delayed loads to control their power-on sequence so that these devices are delayed in startup. Assuming that the second main load group includes an external network card, its current demand may be large at startup. If it is started at the same time as other power demand devices, it may cause excessive instantaneous current. Through the delay control signal, the external network card will start according to the predetermined delay time after the first main load group device and other priority devices are started, avoiding current shock. This delay mechanism ensures the stability of the power supply system and avoids overload of the power supply device.

[0123] S503, if the electrical device is combined into the N+1th load to be delayed in the second main load group, a corresponding N+2 delayed power-on signal is generated, and the N+2 delayed power-on signal is used to control the corresponding MOS delay switch unit to delay the power-on of the N+1th load to be delayed. In this embodiment, at this time, the MOS delay switch unit ensures that the delayed power-on signal is triggered only within the range allowed by the system according to the current demand of the power demand device and the maximum instantaneous current limit of the system. For example, it is assumed that the load device to be delayed in the second main load group includes a large external hard disk, the startup current of the hard disk is large, and it may have an impact on the power supply system. In this case, the MOS delay switch unit controls the startup timing of the hard disk through the delayed power-on signal. The delay time is determined based on the system current demand and the output capacity of the power adapter to ensure that the hard disk will not generate current impact with other devices when it is started; the specific operation is that under the control of the delayed power-on signal, the MOS switch unit will postpone the connection time of the power supply until other devices are powered on and the current load is stable, and then the hard disk will start. For example, within the entire system power output current range, the MOS switch unit will control the startup time according to the delay signal to prevent the hard disk from starting up at the same time as other devices, ensuring that the power system will not be overloaded due to current shock. Through this precise control mechanism, all power-demanding devices can be started in an orderly manner, and the system's power load can be effectively managed, thereby maintaining system stability.

[0124] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A startup peak-shifted power-on control circuit for equipment with multiple power requirements, characterized in that: The startup staggered power-on control circuit of a device with multiple power requirements comprises a power supply module, a control module, a first voltage conversion module, a second voltage conversion module, a delay switch management module and a power-on load module, wherein the power-on load module comprises a plurality of power demand devices, wherein the control module acquires device data of each of the power demand devices in real time on the one hand, and combines the respective power demand devices according to the device data on the other hand, so as to generate a first main load group and a second main load group, wherein the second main load group comprises a priority delay load and one or more loads to be delayed; The power output end of the power supply module is respectively connected to the power input end of the first voltage conversion module and the power input end of the second voltage conversion module, the power output end of the first voltage conversion module is connected to the power input end of the first main load group, the delay switch management module includes one or more MOS delay switch units, the power output end of the second voltage conversion module is respectively connected to the power input end of the priority delay load and the power input end of the MOS delay switch unit, the power output end of the MOS delay switch unit is connected to the corresponding power input end of the load to be delayed, the first enable signal output end of the control module is connected to the enable signal input end of the first voltage conversion module, the second enable signal output end of the control module is connected to the enable signal input end of the second voltage conversion module, and the third enable signal output end of the control module is connected to the enable signal input end of the MOS delay switch unit; The first voltage conversion module includes a voltage conversion chip PU7002, a resistor PR7022, an inductor PL7002, an input filter unit and an output filter unit, the power input end of the input filter unit is connected to the power output end of the power supply module, the power output end of the input filter unit is connected to the power input end of the voltage conversion chip PU7002, the power output end of the voltage conversion chip PU7002 is connected to the first end of the inductor PL7002, the second end of the inductor PL7002 is connected to the power input end of the output filter unit, the power output end of the output filter unit is connected to the power input end of the first main load group, the first end of the resistor PR7022 is connected to the enable signal input end of the voltage conversion chip PU7002, and the second end of the resistor PR7022 is connected to the first enable signal output end of the control module; The MOS delay switch unit includes a MOS transistor Q94, a MOS transistor Q96, a resistor R4669 and a resistor R4668. The first conduction end of the MOS transistor Q94 is connected to the power output end of the second voltage conversion module, the second conduction end of the MOS transistor Q94 is connected to the power input end of the corresponding load to be delayed, the controlled end of the MOS transistor Q94 is connected to the first end of the resistor R4669, the second end of the resistor R4669 is connected to the first conduction end of the MOS transistor Q96, the second conduction end of the MOS transistor Q96 is grounded, the controlled end of the MOS transistor Q96 is connected to the third enable signal output end of the control module, the first end of the resistor R4668 is connected to the power output end of the second voltage conversion module, and the common node between the controlled end of the MOS transistor Q94 and the first end of the resistor R4669 is connected to the second end of the resistor R4668.

2. A startup peak-shifted power-on control circuit for a device with multiple power requirements according to claim 1, characterized in that: The first voltage conversion module also includes a voltage acquisition network, which includes a resistor PR7026 and a resistor PR7028. The common node between the second end of the inductor PL7002 and the power input end of the output filter unit is connected to the first end of the resistor PR7026, the second end of the resistor PR7026 is connected to the first end of the resistor PR7028, the second end of the resistor PR7028 is grounded, and the common node between the second end of the resistor PR7026 and the first end of the resistor PR7028 is connected to the feedback signal input end of the voltage conversion chip PU7002.

3. A method for controlling the start-up peak-shifting power-on of a device with multiple power requirements, applied to a start-up peak-shifting power-on control circuit for a device with multiple power requirements as claimed in any one of claims 1 to 2, characterized in that: The control method comprises: Identify the power demand devices in the computer that need to be powered on; Acquire device data of each of the power demand devices; Determining a corresponding power-on weight according to the device data; According to the power-on weight, each of the power demand devices is combined to determine a corresponding power-on device combination, wherein the power-on device combination includes a first main load group and a second main load group, wherein the second main load group includes a priority delay load and one or more to-be-delayed loads; A corresponding delay control signal is generated according to the combination of powered devices, and the delay control signal is used to control each of the power demand devices to start staggered power-on.

4. The method for controlling the start-up peak power-on of a device with multiple power requirements according to claim 3, characterized in that: The step of determining the corresponding power-on weight according to the device data includes: Determining type parameters and status parameters in the device data; Determine the corresponding type weight based on the predetermined mapping relationship of the type parameters; Based on the determined weight calculation model, each state parameter is assigned a corresponding initial weight, and the product of each state parameter and the corresponding state initial weight is added, and the sum of the additions is the state weight; The type weight and the state weight are packaged to generate a power-on weight corresponding to the power demand device.

5. The method for controlling the start-up peak power-on of a device with multiple power requirements according to claim 4, characterized in that: The step of combining the power demand devices according to the power-on weights to determine a corresponding power-on device combination includes: According to the weights of the types, the power demand devices are combined to determine a first main load group that needs to be powered on in time, and a second main load group that can be powered on with a delay; Determining a power-on sequence of each of the power demand devices in the first main load group according to each of the state weights; According to each of the state weights, the priority delayed load and the to-be-delayed load in the second main load group are determined.

6. A method for controlling the start-up peak power-on of a device with multiple power requirements according to claim 5, characterized in that: In the step of determining the priority delayed load and the to-be-delayed load in the second main load group according to each of the state weights, the to-be-delayed load includes a first delayed load, a second delayed load, ... and an N+1th delayed load, the step further includes: Determine the maximum instantaneous current the computer can supply; Determine the instantaneous current required by each of the power demand devices in the second main load group according to each of the state weights, and determine the maximum instantaneous current required and the minimum instantaneous current required among each of the instantaneous current required; Adding the maximum demand instantaneous current to the minimum demand instantaneous current, and determining whether the sum of the maximum demand instantaneous current and the minimum demand instantaneous current is greater than the maximum instantaneous current; If the sum of the maximum instantaneous current demand and the minimum instantaneous current demand is less than or equal to the maximum instantaneous current demand, the power demand devices corresponding to the maximum instantaneous current demand and the minimum instantaneous current demand are all determined as priority delay loads; If the sum of the maximum instantaneous current demand and the minimum instantaneous current demand is greater than the maximum instantaneous current demand, the power demand device corresponding to the maximum instantaneous current demand is determined as a priority delay load; Determine the other demand instantaneous currents except the maximum demand instantaneous current and the minimum demand instantaneous current as secondary demand instantaneous currents, and arrange them according to the numerical values ​​of the secondary demand instantaneous currents to determine the secondary demand instantaneous current with the largest numerical value as the target demand instantaneous current; Determine the number of times N that the delayed load is generated, and judge whether the sum of the target demand instantaneous current and the minimum demand instantaneous current is greater than the maximum instantaneous current. If it is greater than, determine the power demand device corresponding to the target demand instantaneous current as the N+1th delayed load, and redefine the new target demand instantaneous current for judgment. If it is less than or equal to, determine both the target demand instantaneous current and the power demand devices corresponding to the minimum demand instantaneous current as the N+1th delayed load, redefine the new target demand instantaneous current, and select a new minimum demand instantaneous current from the sub-demand instantaneous current for judgment with the new target demand instantaneous current.

7. A method for controlling the start-up peak power-on of a device with multiple power requirements according to claim 6, characterized in that: The steps of re-determining a new target instantaneous current demand and selecting a new minimum instantaneous current demand from the secondary instantaneous current demand include: Re-determine a new target demand instantaneous current, add the new target demand instantaneous current and the actual demand instantaneous current, the actual demand instantaneous current being the sum of the target demand instantaneous current corresponding to the N+1th delayed load and the minimum demand instantaneous current; Determine whether the sum of the new target instantaneous current demand and the actual instantaneous current demand is greater than the maximum instantaneous current; If not, a new minimum required instantaneous current is selected from the sub-required instantaneous currents; If so, the power demand devices corresponding to the new target demand instantaneous current are all determined as the N+1th delayed load, and a new target demand instantaneous current is re-determined for judgment until the sum of the new target demand instantaneous current and the actual demand instantaneous current is less than or equal to the maximum instantaneous current.

8. The method for controlling the start-up peak power-on of a device with multiple power requirements according to claim 6, characterized in that: In the step of generating a corresponding delay control signal according to the power-on device combination, the delay control signal includes a timely power-on signal, a first delayed power-on signal, ... and an N+2th delayed power-on signal, and the step further includes: If the powered device group is a first main load group, generating a timely power-on signal for timely powering on the first main load group; If the powered-on device group is a priority delayed load in the second main load group, a first delayed power-on signal for priority delay is generated; If the electrical equipment combination is the N+1th load to be delayed in the second main load group, a corresponding N+2 delayed power-on signal is generated, and the N+2 delayed power-on signal is used to control the corresponding MOS delay switch unit to delay powering on the N+1th load to be delayed.

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