Control method and device of power supply unit, electronic equipment and storage medium

Abstract

The invention discloses a control method and device of a power supply unit, electronic equipment and a storage medium, and relates to the technical field of power supplies, the power supply unit in a redundant power supply system is divided into a working unit and a backup redundant unit, and the power supply unit serving as the working unit directly outputs equipment demand voltage to meet the power supply demand of the equipment; although the power supply unit serving as the backup redundancy unit outputs the same voltage, as the first backup voltage output by the backup redundancy unit is smaller than the required voltage of the equipment, and the current only flows from the high level to the low level, the backup redundancy unit is in the working state of outputting the voltage, but the output current of the backup redundancy unit is zero; the redundant backup unit only has static loss and no conversion loss, so that zero-power output of the redundant backup unit is realized, the invalid loss of the redundant backup unit is reduced, the load rate of the working unit is improved, and the power supply conversion efficiency of the whole redundant power supply system is improved.

Description

Technical Field

[0001] The present invention relates to the field of power supply technology, and in particular to a control method, device, electronic equipment and storage medium for a power supply unit. Background Art

[0002] As a computer device dedicated to storing, processing and transmitting data, the server plays a vital role in today's digital and Internet era. The server provides users with various services, such as websites, emails, file sharing and database management, enabling users to exchange data and share information on the Internet. Therefore, it is crucial to ensure the reliability of the server. And reliable power supply is the prerequisite for the server to work reliably.

[0003] In order to improve the power supply reliability of the server, the server's power supply unit (PSU) is usually required to be implemented in an N+N redundant backup mode. 2N power supply units work at the same time. If N of them fail, the remaining N power supply units can still support the normal operation of the entire system. However, when all 2N power supply units are working normally and without failure, the maximum load of each power supply unit is less than 50%. If the business volume of the entire system is low or the configuration is low, the load of each power supply unit will be much lower than 50%, or even lower than 10%. Therefore, this N+N backup configuration will reduce the load rate of all power supply units, resulting in low power conversion efficiency of the power supply units and energy waste.

[0004] It can be seen that how to improve the power conversion efficiency of the power supply unit of the server is a problem that those skilled in the art need to solve. Summary of the invention

[0005] The purpose of the embodiments of the present invention is to provide a control method, device, electronic device and storage medium of a power supply unit, which can solve the problem of energy waste caused by too low power conversion efficiency of the power supply unit of the server.

[0006] To solve the above technical problems, an embodiment of the present invention provides a control method for a power supply unit, which is applied to a processor of a redundant power supply system. The redundant power supply system also includes N power supply units, the output ends of the N power supply units are connected in parallel, and the common connection point of the parallel connection is connected to the power supply end of the device, and the control end of the power supply unit is connected to the output end of the processor, where N is a positive integer; the control method for the power supply unit includes:

[0007] Select i power supply units among N power supply units as working units, and the remaining Ni power supply units as backup redundant units; i is a positive integer, and i<N;

[0008] The output voltage of the power supply unit as the working unit is configured to be the required voltage of the device to supply power to the device;

[0009] The output voltage of the power supply unit serving as a backup redundant unit is configured as a first backup voltage; the first backup voltage is lower than the voltage required by the equipment.

[0010] In some embodiments, it also includes:

[0011] If A power supply units fail in the working unit, A power supply units are selected from the backup redundant units as the units to be awakened; A is a positive integer, and A<i;

[0012] The output voltage of the unit to be awakened is adjusted from the first backup voltage to the device required voltage.

[0013] In some embodiments, the processor is connected to the power supply unit via a power management bus;

[0014] Configure the output voltage of the power supply unit as the working unit to the device required voltage, including:

[0015] Writing a binary value corresponding to the device required voltage into a preset register of a power management bus connected to the working unit;

[0016] Configuring the output voltage of a power supply unit serving as a backup redundant unit to be a first backup voltage includes:

[0017] A binary value corresponding to the first backup voltage is written into a preset register of a power management bus connected to the backup redundant unit.

[0018] In some embodiments, it also includes:

[0019] Detecting a load rate of the working unit, and determining whether the load rate of the working unit is less than a first preset value;

[0020] If yes, then select several power supply units from the working units as dynamic redundant units;

[0021] The output voltage of the dynamic redundant unit is configured as a second backup voltage; the second backup voltage is less than the device required voltage, and the second backup voltage is greater than the first backup voltage.

[0022] In some embodiments, detecting the load rate of the working unit and determining whether the load rate of the working unit is less than a first preset value includes:

[0023] Determine the current average value of the output currents of all working units;

[0024] Determine whether the current average value is less than a preset current, where the preset current is the product of the maximum output current of the power supply unit and a first preset value;

[0025] If so, determining that the load rate of the working unit is less than a first preset value;

[0026] If not, it is determined that the load rate of the working unit is not less than the first preset value, and the process jumps again to the step of determining the current average value of the output currents of all the working units.

[0027] In some embodiments, the output current sampling terminals of all power supply units are connected to the current detection terminal of the processor via a current sharing bus;

[0028] Determine the current average of the output currents of all operating units, including:

[0029] The bus voltage of the current sharing bus is read, and the bus voltage is determined as the current average value of the output currents of all the working units.

[0030] In some embodiments, selecting a plurality of power supply units from the working units as dynamic redundant units includes:

[0031] Determine the number of working units currently supplying power and the total current value of the output currents of all working units;

[0032] Calculate the ratio between the total current value and the preset current, and determine the ratio as the target number of power supply units that need to work currently;

[0033] Subtract the number of units from the target number, and use the difference as the number of dynamic redundant units to be selected;

[0034] If the selected number is less than the number of units, then select power supply units with the number of units from the working units as dynamic redundant units;

[0035] If the selected number is not less than the number of units, one power supply unit is reserved as a working unit, and the remaining working units are determined as dynamic redundant units;

[0036] After selecting several power supply units from the working units as dynamic redundant units, it also includes:

[0037] If the load rate of the working unit is greater than the second preset value, the output voltages of the plurality of power supply units in the dynamic redundant unit are adjusted from the second backup voltage to the equipment required voltage.

[0038] To solve the above technical problems, an embodiment of the present invention further provides a control device of a power supply unit, which is applied to a processor of a redundant power supply system. The redundant power supply system also includes N power supply units, the output ends of the N power supply units are connected in parallel, and the common connection point of the parallel connection is connected to the power supply end of the device, the control end of the power supply unit is connected to the output end of the processor, and N is a positive integer; the control device of the power supply unit includes:

[0039] A work division unit is used to select i power supply units from N power supply units as working units and the remaining Ni power supply units as backup redundant units; i is a positive integer, and i<N;

[0040] A first voltage configuration unit, used to configure the output voltage of the power supply unit as the working unit to the device required voltage, so as to supply power to the device;

[0041] The second voltage configuration unit is used to configure the output voltage of the power supply unit serving as the backup redundant unit to a first backup voltage; the first backup voltage is lower than the required voltage of the device.

[0042] To solve the above technical problems, an embodiment of the present invention further provides an electronic device, including:

[0043] Memory for storing computer programs;

[0044] The processor is used to execute the computer program to implement the steps of the control method of the power supply unit as described above.

[0045] To solve the above technical problems, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the control method of the power supply unit as described above are implemented.

[0046] It can be seen from the above technical solution that the power supply unit in the redundant power supply system is divided into a working unit and a backup redundant unit. The power supply unit as the working unit directly outputs the device required voltage to meet the power supply demand of the device; the power supply unit as the backup redundant unit also outputs voltage, but because the first backup voltage output by the backup redundant unit is less than the device required voltage, and the current will only flow from a high level to a low level, the backup redundant unit is in a working state of outputting voltage, but its output current is zero, and it itself has only static loss but no conversion loss. The beneficial effect of the present invention is that the redundant backup unit is made to output zero power through the control of the output voltage, thereby reducing the invalid loss of the redundant backup unit, increasing the load rate of the working unit, and improving the power conversion efficiency of the entire redundant power supply system. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0048] Figure 1 A schematic flow chart of a control method for a power supply unit provided in an embodiment of the present invention;

[0049] Figure 2 A schematic diagram of the structure of a redundant power supply system provided by an embodiment of the present invention;

[0050] Figure 3 A schematic diagram of the structure of a control device for a power supply unit provided in an embodiment of the present invention;

[0051] Figure 4 A schematic diagram of the structure of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] The terms "including" and "having" in the specification of the present invention and the above-mentioned drawings, as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but may include steps or units that are not listed.

[0054] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0055] Next, a control method for a power supply unit provided by an embodiment of the present invention is described in detail. Figure 1 As shown, Figure 1 A flow chart of a control method for a power supply unit provided in an embodiment of the present invention; the control method for the power supply unit is applied to a processor of a redundant power supply system, the redundant power supply system further comprises N power supply units, the output ends of the N power supply units are connected in parallel, and the common connection point of the parallel connection is connected to the power supply end of the device, the control end of the power supply unit is connected to the output end of the processor, and N is a positive integer; the control method for the power supply unit comprises:

[0056] S11: select i power supply units from N power supply units as working units, and the remaining Ni power supply units as backup redundant units; i is a positive integer, and i<N;

[0057] It is understandable that, considering that servers generally work 24 hours a day, in order to improve the reliability of the redundant power supply system for powering the equipment, the N power supply units set in the redundant power supply system will be divided into two groups. The power supply unit as the working unit needs to power the equipment, and when there is a power supply unit in the working unit that fails, a backup redundant unit is needed to replace the failed working unit for power supply. The present application does not make any special restrictions on the grouping method of the power supply unit, the number of power supply units in the working unit and the number of power supply units in the redundant backup unit. In general, it is necessary to consider the maximum load that may be generated by the equipment when it is working. When grouping, it is necessary to ensure that there are enough power supply units in the working unit to bear the maximum load generated when the equipment is working. That is, the value of i can be set according to the maximum load during the working process of the equipment, and i power supply units can bear the maximum load of the equipment. A preferred embodiment is that the number of power supply units in the working unit is equal to the number of power supply units in the redundant backup unit, so that when all the power supply units as working units in the initial group fail, the equal number of power supply units in the redundant backup unit can also support the normal operation of the server and the entire redundant power supply system. An equal number of working units and redundant backup units can also establish a one-to-one correspondence. When a power supply unit in a working unit fails, the corresponding power supply unit in the redundant backup unit can be directly awakened to replace it for normal operation.

[0058] S12: configuring the output voltage of the power supply unit as the working unit to be the device required voltage to supply power to the device;

[0059] On the one hand, as the main power supply unit in the redundant power supply system, the working unit needs to bear the load generated when the equipment is working to ensure the normal operation of the equipment. Therefore, the power supply unit as the working unit needs to output an output voltage that can meet the power supply demand of the equipment. The redundant power supply system needs to continuously and stably output the equipment required voltage to ensure the normal operation of the equipment. Therefore, the output voltage of the power supply unit as the working unit will be configured as the equipment required voltage. The equipment required voltages output by the i power supply units as working units are connected in parallel and output to the power supply end of the equipment as the power supply bus voltage to provide a stable power supply voltage for the equipment. The specific value of the equipment required voltage needs to be set and adjusted according to the specific type of equipment and power supply requirements. The equipment required voltage refers to the standard power supply voltage that can ensure the normal operation of the equipment.

[0060] S13: configuring the output voltage of the power supply unit serving as the backup redundant unit to be a first backup voltage; the first backup voltage is lower than the voltage required by the device.

[0061] On the other hand, in order to ensure that the power supply unit in the backup redundant unit can respond in time when there is a fault in the working unit, the backup redundant unit also needs to be kept in working state, so the processor will also control the backup redundant unit to output voltage, but in order to reduce the loss of the power supply unit and improve the conversion efficiency of the power supply unit, the power supply unit entering the redundant backup state will be in a state where the power supply works normally but cannot output current. Therefore, the present invention uses the output voltage of the power supply unit as a backup redundant unit to be adjusted to be less than the power supply bus voltage, that is, less than the voltage required by the equipment, and the power supply unit will no longer output the load, so that the power supply unit as a backup redundant unit in the entire redundant power supply system will not bear the load, and only the power supply unit as the working unit will bear the load, and the load rate refers to the ratio of the actual load borne by the power supply unit to its own maximum load. When only the power supply unit as the working unit bears the load, the number of power supply units bearing the equipment load is reduced, and the load rate of a single power supply unit will be increased, thereby avoiding the power supply unit working in a low load area, low conversion efficiency, resulting in waste of electric energy, and increased costs. This application does not make any special restrictions on the specific value of the first backup voltage. It only needs to be less than the device's required voltage and preferably greater than the device's minimum operating voltage. The device's minimum operating voltage refers to the lowest operating voltage that can ensure the normal operation of the device.

[0062] It is not difficult to understand that when the output voltage of the power supply unit as a backup redundant unit is lower than the power supply bus voltage, since the current cannot flow to the high-level area, the output voltage of the power supply unit as a backup redundant unit can output voltage in a normal working state, but there is no current output, that is, 0 load, so it has only static loss but no conversion loss. The power supply unit as a backup redundant unit does not have output power and will not bear the equipment load, so that the load is all realized by the power supply unit as the working unit, avoiding the situation where the conversion efficiency is low due to the low load rate of a single power supply unit in the redundant power supply system caused by N power supply units bearing the load at the same time. Since there are Ni power supply units in a non-output state, the load rate of the other i power supply units that are working normally will be doubled, thereby avoiding the low efficiency interval and improving the overall conversion efficiency.

[0063] As a specific embodiment, the power supply unit as the working unit will work normally, and the output level is V norm , according to the device type, the minimum working voltage that can ensure the normal operation of the device is determined to be V min , the MCU accesses the power supply unit as a backup redundant unit through PMBUS (Power Management Bus), adjusts the control instructions to it, and increases its V out Adjust to V back , and ensure that V min <Vback <V norm , and turn off the current sharing control function of the redundant power supply system.

[0064] It should be noted that this application does not make any special restrictions on the specific types and implementation methods of each power supply unit and processor in the redundant power supply system. The processor can be implemented using MCU (Microcontroller Unit) and other methods. The number N of power supply units is generally set to an even number to facilitate the realization of an equal number of working units and backup redundant units.

[0065] As a specific embodiment, see Figure 2 As shown, Figure 2 A structural diagram of a redundant power supply system provided by an embodiment of the present invention; the present invention designs a redundant backup management system for power supply units based on MCU. The MCU can manage and monitor all power supply units through PMBUS, and configure a high-precision AD converter to collect analog signals and use GPIO to detect alarm signals. VIN represents the input power supply of the redundant power supply system, and the Vout bus is the power supply bus for the redundant power supply system to supply power to the server nodes. N power supply units PSU are set in the redundant power supply system. During the initial configuration, PSU 1 to PSU N / 2 are used as working units, and PSU (N / 2) + 1 to PSU N are used as backup redundant units.

[0066] Furthermore, considering that the present invention mainly increases the load rate by setting the output voltage, in order to avoid the current backflow caused by the power supply bus voltage being greater than the output voltage of the power supply unit as the backup redundant unit, an anti-backflow circuit is provided at the output end of each power supply unit, and N anti-backflow circuits connected to the N power supply units in a one-to-one correspondence are provided in the redundant power supply system. When V is controlled to increase the load rate, back <V norm When the current on the power supply bus is reversed, the current will not flow back to the redundant backup power supply unit, thereby preventing the redundant backup power supply unit from being damaged. The anti-backflow circuit can be implemented by a diode or the like, and this application does not make any special limitation here.

[0067] The control method of the power supply unit provided by the present invention can be applied to the redundant control of power supply units of various systems. By designing a redundant management strategy for the power supply unit, it is achieved that the power supply unit has no current output when it is in a redundant backup state, and the backup redundant power supply unit has 0 power output, thereby improving the load rate of the power supply unit as a working unit, making the normally working power supply unit in a high efficiency range, reducing invalid losses, and improving the power conversion efficiency of the entire redundant power supply system.

[0068] In some embodiments, it also includes:

[0069] If A power supply units fail in the working unit, A power supply units are selected from the backup redundant units as the units to be awakened; A is a positive integer, and A<i;

[0070] The output voltage of the unit to be awakened is adjusted from the first backup voltage to the device required voltage.

[0071] It is not difficult to understand that when a power supply unit in a working unit fails, it is necessary to wake up a corresponding number of power supply units from the redundant backup unit and control them to replace these failed power supply units for normal operation. For example, when A power supply units in a working unit fail, the MCU will wake up A power supply units in a redundant backup state and adjust their output voltage to the voltage required by the device, thereby ensuring the number of power supply units that work normally as working units and ensuring that there are enough working units to bear the load of the device. The specific detection method of the failure of the power supply unit, etc., is not specifically limited in this application. There are many options for the selection method of the unit to be awakened, etc., and the application does not make a special limitation here. The corresponding relationship between the power supply unit in the working unit and the power supply unit in the redundant backup unit can be established in advance. When a power supply unit fails, the corresponding power supply unit in the redundant backup unit is directly awakened according to the corresponding relationship to replace it for normal operation. As a specific embodiment, when A power supply units fail and have no output, the MCU detects the alarm signal through GPIO, and immediately wakes up A power supply units in the redundant backup unit through the PMBUS bus, and adjusts its output voltage back to V norm , thus ensuring the stability of power supply.

[0072] It should be noted that the processor wakes up the power supply unit in the redundant backup unit and converts it into a working unit for normal work. The wake-up process requires a process. If during this wake-up process, the load pressure of the other NA normal power supply units as working units is too large and cannot bear the load generated by the equipment, the power supply bus voltage V norm A voltage drop will occur when the power supply bus voltage V morm Reduce to V back When the voltage difference between the output terminal of the power supply unit as a redundant backup unit and the power supply bus no longer exists, the Ni power supply units in the redundant backup unit will be passively awakened, because the current has the characteristic of flowing from the high-voltage area to the low-voltage area, thereby ensuring that the redundant power supply system has sufficient power supply capacity and will not cause equipment downtime due to untimely awakening and redundant backup dormancy. The power supply voltage required for normal operation of the equipment usually has an operating range. The equipment demand voltage is generally the median of this operating range, which is the optimal standard power supply voltage that can meet the normal operation of the equipment. When the power supply bus voltage V morm Has not yet dropped to V backWhen the power supply bus voltage is , the power supply bus voltage will also show a downward trend. However, since the first backup voltage is set to be greater than the minimum operating voltage of the device, that is, V min <V back At this time, although the power supply bus voltage has dropped, its voltage can still meet the power supply requirements of the server (equipment).

[0073] Furthermore, the processor can be connected to each power supply unit through its own GPIO port, and use the GPIO port to detect the alarm signal of the power supply unit, and the alarm signal specifically includes over-temperature protection, over-current protection, etc. of the power supply unit. For any power supply unit, the power supply unit includes protection modules such as over-temperature protection circuit and over-current protection circuit, and these protection modules have corresponding alarm signals. For example, the over-temperature protection circuit will detect the operating temperature of the power supply unit in real time, and when the operating temperature of the power supply unit is not within the normal temperature range, it will output an over-temperature alarm signal; the over-current protection circuit will detect the output current of the power supply unit in real time, and when the output current of the power supply unit is greater than the current threshold, it will output an over-current alarm signal. In the redundant power supply system, N voltage detection modules corresponding to each power supply unit can be added. The input end of the voltage detection module is connected to the output end of the corresponding power supply unit, and the output end is connected to the voltage detection end of the processor. The processor detects the output voltage of the power supply unit in real time through the voltage detection module, and calculates the difference between its actual output voltage and the output voltage configured by the processor. When the difference is greater than the preset value, or the difference between the output voltage of a power supply unit and the output voltage configured by the processor is greater than the preset value, the power supply unit is judged to be faulty and an abnormal voltage alarm signal is output. Once the MCU detects that any alarm signal is output from a power supply unit, it is judged that the power supply unit is faulty and cannot work normally, and the redundant power supply unit is awakened to replace its normal work.

[0074] Specifically, during the pre-grouping setting, the output voltage of the power supply unit serving as the backup redundant unit is configured as the first backup voltage. Therefore, when an abnormality occurs in the power supply unit serving as the working unit, the output voltage of the unit to be awakened only needs to be gradually increased from the first backup voltage to the device required voltage, without having to slowly rise from zero voltage to the device required voltage. This greatly improves the time for awakening the redundant backup unit, and enables seamless awakening of the redundant backup unit. Without adding other circuits, the reliability of the redundant design of redundant backup is guaranteed, thereby improving the response speed of the entire redundant power supply system.

[0075] In some embodiments, the processor is connected to the power supply unit via a power management bus;

[0076] Configure the output voltage of the power supply unit as the working unit to the device required voltage, including:

[0077] Writing a binary value corresponding to the device required voltage into a preset register of a power management bus connected to the working unit;

[0078] Configuring the output voltage of a power supply unit serving as a backup redundant unit to be a first backup voltage includes:

[0079] A binary value corresponding to the first backup voltage is written into a preset register of a power management bus connected to the backup redundant unit.

[0080] It is understandable that all power supply units in the redundant power supply system are connected to the processor via the PMBUS bus, and all power supply units support the PMBUS bus standard. Considering that there are registers for configuring the output voltage in the PMBUS bus, when the processor adjusts the output voltage of each power supply unit, it can directly change the value of the corresponding register in the PMBUS bus to implement the output voltage configuration and output voltage adjustment process of the power supply unit. This application does not make any special restrictions on the setting method of the preset register in the PMBUS bus.

[0081] Specifically, the power management bus can be directly used to implement the management and control of each power supply unit by the processor, and the output voltage of each power supply unit can be configured and adjusted by assigning different values ​​to specific registers therein, which is simple, effective and easy to implement.

[0082] In some embodiments, it also includes:

[0083] Detecting a load rate of the working unit, and determining whether the load rate of the working unit is less than a first preset value;

[0084] If yes, then select several power supply units from the working units as dynamic redundant units;

[0085] The output voltage of the dynamic redundant unit is configured as a second backup voltage; the second backup voltage is less than the device required voltage, and the second backup voltage is greater than the first backup voltage.

[0086] Considering that when the device is in a low-configuration working environment or a low-business period, even if there are Ni power supply units in a backup redundant sleep state, only i power supply units are in a normal working state, but due to the small load of the device, these power supply units still work in a low-load area, resulting in low conversion efficiency. Therefore, a dynamic redundancy control strategy can be further designed. During the power supply process, the load rate of the working unit is detected in real time, and when the load rate of the working unit is less than the first preset value, j power supply units are selected from the i working units as dynamic redundant units, and then the output voltage of the dynamic redundant unit is configured as the second backup voltage. At this time, the sleep voltage of the dynamic redundant unit, that is, the second backup voltage VD-back Set the voltage lower than the normal working voltage of the device and higher than the backup redundancy sleep voltage, that is, V back <V D-back <V norm . When the ij normally functioning power supply units are able to meet the equipment load, since the second backup voltage is lower than the power supply bus voltage, the dynamic redundant unit will also maintain a state of zero current and zero power output, and will no longer bear the equipment load, thereby increasing the load rate of the ij normally functioning power supply units, and further improving the conversion efficiency of the entire redundant power supply system under the low load state of the equipment. This application does not make any special restrictions on the specific values ​​of the first preset value and the second backup voltage. The first preset value is generally implemented in the form of a percentage, and a load rate below 50% is generally defined as a low load state, so the first preset value is generally 50%.

[0087] It is not difficult to understand that when the equipment load increases and the ij normally working power supply units cannot meet the equipment load, the dynamic redundant unit will be awakened first and adjusted to a normal working state to bear the load, and because V back <V D-back , the output voltage of the awakened dynamic redundant unit only needs to be gradually increased from the second backup voltage to the device demand voltage. When the server business increases, the dynamic redundant power supply unit can recover more quickly, and the response speed is faster than the response speed of the backup redundant unit. In this way, the dynamically redundant dormant power supply unit can respond quickly to ensure the power supply to the device. Similar to the redundant backup unit, the dynamic redundant unit will also be passively awakened. When the power supply bus voltage V morm Reduce to V D-back When the voltage difference between the output terminals of the j power supply units as dynamic redundant units and the power supply bus no longer exists, they will be passively awakened first. In addition, the power supply units that are dormant to ensure dynamic redundant control will not affect the normal redundant power supply units when they are awakened. Whether they are dormant or not depends only on the load generated by the equipment.

[0088] It should be noted that there are a total of N power supply units in the redundant power supply system. When the device starts to be powered, N / 2 of them can be directly used as backup redundant units and their output voltages can be adjusted to V back Then, in the process of powering the server, due to the fluctuation of the server system business volume, when the business is very low, the load of N / 2 normally working power supply units is also very low, but the business is always fluctuating, so this embodiment proposes the concept of dynamic redundancy, and adjusts some normally working power supply units to a dynamic redundant state when the server business is low.

[0089] Specifically, the dynamic redundancy control strategy proposed in this embodiment can enable the power supply unit to operate in the optimal efficiency range under any equipment operating conditions, thereby greatly improving the power conversion efficiency of the redundant power supply system. The power conversion efficiency of the redundant power supply system can be further improved during periods of low equipment configuration or low business hours, with higher flexibility and a wider range of applications.

[0090] In some embodiments, detecting the load rate of the working unit and determining whether the load rate of the working unit is less than a first preset value includes:

[0091] Determine the current average value of the output currents of all working units;

[0092] Determine whether the current average value is less than a preset current, where the preset current is the product of the maximum output current of the power supply unit and a first preset value;

[0093] If so, determining that the load rate of the working unit is less than a first preset value;

[0094] If not, it is determined that the load rate of the working unit is not less than the first preset value, and the process jumps again to the step of determining the current average value of the output currents of all the working units.

[0095] It is understandable that the redundant power supply system provides a stable power supply voltage for the equipment, so the load fluctuation of the equipment and the load rate of the redundant power supply system will be intuitively reflected in the output current of the redundant power supply system. Therefore, it is possible to directly obtain the output current of the power supply unit and determine whether the load rate of the working unit is too low by judging the size of the output current. At the same time, considering that the output currents of each power supply unit may not be completely consistent, the load rate of the power supply unit can be determined by determining the current average value of the output current of the power supply unit as the working unit. For a certain power supply unit, the maximum load it can bear is the load value corresponding to when its output current is the largest. Therefore, the preset current corresponding to the first preset value can be directly obtained by calculating the product of the maximum output current of the power supply unit and the first preset value. The maximum output current of the power supply unit can be directly determined according to the specifications of the power supply unit. The specific method for determining the current average value and the like are not particularly limited in this application.

[0096] Specifically, the load rate of the working unit can be determined by real-time detection of the output current of the power supply unit, thereby judging whether the load rate of the working unit is too low, so that the processor can judge whether it is necessary to execute the dynamic redundant control strategy, which is simple, effective and easy to implement.

[0097] In some embodiments, the output current sampling terminals of all power supply units are connected to the current detection terminal of the processor via a current sharing bus;

[0098] Determine the current average of the output currents of all operating units, including:

[0099] The bus voltage of the current sharing bus is read, and the bus voltage is determined as the current average value of the output currents of all the working units.

[0100] Considering that after the output voltage configuration of the power supply unit is completed in the redundant power supply system, the output ends of the power supply units as working units are connected in parallel to power the equipment. In order to achieve load balancing of each power supply unit, that is, current sharing, a current sharing bus is designed in the redundant power supply system to control the current sharing of each power supply unit in normal working state. The current sharing bus is a common connection line used to connect the output ends of the output current sampling voltage of all parallel power supply units. In this way, the voltage on the current sharing bus represents the average value of the output current of all parallel power supply units. Current sharing control refers to the power supply units connected in parallel, and each power supply unit outputs the same load. The MCU can read the output current of each power supply unit through the PMBUS bus, and then adjust the output voltage of each power supply unit by comparing the output current of each power supply unit with the average current on the current sharing bus to achieve consistency in the output current of each power supply unit. Therefore, the current sharing bus voltage can directly reflect the average current value of all normal working power supply units that are normally outputting the required voltage of the device. The average current I of the power supply unit can be obtained by detecting the current sharing bus voltage. share .

[0101] It should be noted that the processor's current sharing function based on the current sharing bus will only be enabled after the output voltage configuration or adjustment of all power supply units in the redundant power supply system is completed. In the process of grouping working units and backup redundant units, adjusting some working units to dynamic redundant units, waking up backup redundant units, and waking up dynamic redundant units, these output voltage configurations and output voltage adjustments, this current sharing function needs to be turned off. The MCU can specifically send instructions through the PMBUS bus to close the corresponding output current reading registers and stop reading the output current of each power supply unit to turn off the current sharing function.

[0102] Specifically, the use of the current-sharing busbar can achieve balanced operation of the load, improve the efficiency and reliability of the entire redundant power supply system, and reduce the impact of load changes on the redundant power supply system, thereby achieving optimized load control. At the same time, the use of the current-sharing busbar can also effectively detect the output current of the power supply unit, thereby realizing the detection of the load rate of the power supply unit, and facilitating the implementation of the dynamic redundant control strategy.

[0103] In some embodiments, selecting a plurality of power supply units from the working units as dynamic redundant units includes:

[0104] Determine the number of working units currently supplying power and the total current value of the output currents of all working units;

[0105] Calculate the ratio between the total current value and the preset current, and determine the ratio as the target number of power supply units that need to work currently;

[0106] Subtract the number of units from the target number, and use the difference as the number of dynamic redundant units to be selected;

[0107] If the selected number is less than the number of units, then select power supply units with the number of units from the working units as dynamic redundant units;

[0108] If the selected number is not less than the number of units, one power supply unit is reserved as a working unit, and the remaining working units are determined as dynamic redundant units;

[0109] After selecting several power supply units from the working units as dynamic redundant units, it also includes:

[0110] If the load rate of the working unit is greater than the second preset value, the output voltages of the plurality of power supply units in the dynamic redundant unit are adjusted from the second backup voltage to the equipment required voltage.

[0111] It is understandable that when the device load is too low, the difference between the current output current of the power supply unit and the preset current corresponding to the ideal load rate can be further calculated to determine the dynamic redundant unit that needs to sleep. However, even if the device load is very low, it is ultimately necessary to retain a power supply unit as a working unit to ensure that the device can receive a normal power supply voltage. When the device load increases, a power supply unit can be used as a unit to first wake up a dynamic redundant unit, and repeatedly judge the load rate of the device. If the load rate is still too large, continue to wake up a dynamic redundant unit until the load rate of the device is less than the second preset value or all dynamic redundant units have been awakened. The specific value of the second preset value is not particularly limited in this application, and can be determined based on the actual relationship between the conversion efficiency and the load rate of the power supply unit to ensure that the load rate of the normally operating power supply unit can be maintained at an appropriate level and operate in the optimal efficiency range.

[0112] As a specific embodiment, taking the load rate of the power supply unit as not less than 50% as an example, when I share <0.5I max (the maximum output current of the power supply unit), it means that the load rate of each normally working power supply unit is less than 50% and is not working in the optimal efficiency range. Therefore, it is necessary to continue to put some power supply units into sleep mode as dynamic redundant units so that the normally working power supply units can work in the optimal efficiency range. share =0.5I max To determine the number of power supply units that need to work normally so that the load rate of the power supply units that work normally is maintained at 50%, we can get k = At this time, ik power supply units among the i power supply units that are working units need to be dormant, that is, j=ik, so that the load rate of k power supply units at the final normal working point can be greater than 50%. When the calculated result of k is not a positive integer, a value greater than k can be determined as the final value of k, or a positive integer closest to k can be determined as the final value of k.

[0113] Specifically, the number of power supply units of the dynamic redundant units that need to be put into sleep mode can be calculated to improve the accuracy and reliability of the dynamic redundant control process, ensure that the load rate of the normally operating power supply units is greater than a first preset value, and make the normally operating power supply units operate in an optimal efficiency range, thereby improving the power conversion efficiency of the redundant power supply system during low equipment configuration or low business periods.

[0114] See also Figure 3 As shown, Figure 3 A schematic diagram of the structure of a control device of a power supply unit provided by an embodiment of the present invention; To solve the above technical problems, an embodiment of the present invention further provides a control device of a power supply unit, which is applied to a processor of a redundant power supply system, wherein the redundant power supply system further comprises N power supply units, wherein the output ends of the N power supply units are connected in parallel, and the common connection point of the parallel connection is connected to the power supply end of the device, and the control end of the power supply unit is connected to the output end of the processor, wherein N is a positive integer; the control device of the power supply unit comprises:

[0115] A work division unit 11 is used to select i power supply units from N power supply units as working units and the remaining Ni power supply units as backup redundant units; i is a positive integer, and i<N;

[0116] A first voltage configuration unit 12, configured to configure the output voltage of the power supply unit as the working unit to the device required voltage, so as to supply power to the device;

[0117] The second voltage configuration unit 13 is used to configure the output voltage of the power supply unit serving as a backup redundant unit to a first backup voltage; the first backup voltage is lower than the required voltage of the device.

[0118] In some embodiments, it also includes:

[0119] A wake-up target determination unit is used to select A power supply units from the backup redundant units as units to be awakened if A power supply units fail in the working unit; A is a positive integer, and A<i;

[0120] The first awakening unit is used to adjust the output voltage of the unit to be awakened from the first backup voltage to the device required voltage.

[0121] In some embodiments, the processor is connected to the power supply unit via a power management bus; the first voltage configuration unit 12 includes:

[0122] A first voltage configuration subunit, used to write a binary value corresponding to a device required voltage into a preset register of a power management bus connected to the working unit;

[0123] The second voltage configuration unit 13 includes:

[0124] The second voltage configuration subunit is used to write a binary value corresponding to the first backup voltage into a preset register of a power management bus connected to the backup redundant unit.

[0125] In some embodiments, it also includes:

[0126] A load rate determination unit, used to detect the load rate of the working unit and determine whether the load rate of the working unit is less than a first preset value; if so, triggering the dynamic redundancy setting unit;

[0127] A dynamic redundancy setting unit, used for selecting a number of power supply units from the working units as dynamic redundancy units;

[0128] The dynamic redundant voltage configuration unit is used to configure the output voltage of the dynamic redundant unit to a second backup voltage; the second backup voltage is less than the device required voltage, and the second backup voltage is greater than the first backup voltage.

[0129] In some embodiments, the load rate determination unit includes:

[0130] An average current determination unit, used to determine the current average value of the output currents of all working units;

[0131] A load rate judgment subunit, used to judge whether the current average value is less than a preset current, where the preset current is the product of the maximum output current of the power supply unit and a first preset value; if so, the first judgment unit is triggered, and if not, the second judgment unit is triggered;

[0132] A first determination unit, used for determining whether the load rate of the working unit is less than a first preset value;

[0133] The second determination unit is used to determine whether the load rate of the working unit is not less than a first preset value, and to re-trigger the average current determination unit.

[0134] In some embodiments, the output current sampling terminals of all power supply units are connected to the current detection terminal of the processor through a current sharing bus; the average current determination unit includes:

[0135] The average current determination subunit is used to read the bus voltage of the current-sharing bus and determine the bus voltage as the current average value of the output currents of all working units.

[0136] In some embodiments, the dynamic redundancy setting unit includes:

[0137] A total current value calculation unit, used to determine the number of working units currently supplying power and the total current value of the output currents of all working units;

[0138] A target number calculation unit, used to calculate the ratio between the total current value and the preset current, and determine the ratio as the target number of power supply units that need to work currently;

[0139] A dynamic redundant unit quantity determination unit, used for subtracting the unit quantity from the target quantity and using the obtained difference as the selection quantity of the dynamic redundant units to be selected;

[0140] A first dynamic redundancy setting subunit is used to select power supply units of the number of units from the working units as dynamic redundant units if the selected number is less than the number of units;

[0141] A second dynamic redundancy setting subunit is used to reserve one power supply unit as a working unit and determine the remaining working units as dynamic redundant units if the selected number is not less than the number of units;

[0142] Also includes:

[0143] The second awakening unit is used to adjust the output voltages of several power supply units in the dynamic redundant unit from the second backup voltage to the device required voltage if the load rate of the working unit is greater than the second preset value.

[0144] For the description of the features in the control device of the power supply unit provided in the embodiment of the present invention, reference can be made to the relevant description of the embodiment of the control method of the power supply unit, which will not be described in detail here.

[0145] See also Figure 4 As shown, Figure 4 The present invention provides a schematic diagram of the structure of an electronic device according to an embodiment of the present invention. To solve the above technical problems, the present invention also provides an electronic device, including:

[0146] A memory 60, for storing computer programs;

[0147] The processor 61 is used to implement the steps of the control method of the power supply unit as described in the above embodiment when executing the computer program.

[0148] The electronic device provided in this embodiment may include but is not limited to a smart phone, a tablet computer, a laptop computer or a desktop computer.

[0149] Among them, the processor 61 may include one or more processing cores, such as a 4-core processor, an 8-core processor, etc. The processor 61 can be implemented in at least one hardware form of digital signal processing (DSP), field-programmable gate array (FPGA), and programmable logic array (PLA). The processor 61 may also include a main processor and a coprocessor. The main processor is a processor for processing data in the awake state, also known as a central processing unit (CPU); the coprocessor is a low-power processor for processing data in the standby state. In some embodiments, the processor 61 may be integrated with a graphics processing unit (GPU), and the GPU is responsible for rendering and drawing the content to be displayed on the display screen. In some embodiments, the processor 61 may also include an artificial intelligence (AI) processor, which is used to process computing operations related to machine learning.

[0150] The memory 60 may include one or more computer-readable storage media, which may be non-transitory. The memory 60 may also include a high-speed random access memory, and a non-volatile memory, such as one or more disk storage devices, flash memory storage devices. In this embodiment, the memory 60 is at least used to store the following computer program 601, wherein, after the computer program is loaded and executed by the processor 61, it can implement the relevant steps of the control method of the power supply unit disclosed in any of the aforementioned embodiments. In addition, the resources stored in the memory 60 may also include an operating system 602 and data 603, etc., and the storage method may be temporary storage or permanent storage. Among them, the operating system 602 may include Windows, Unix, Linux, etc. The data 603 may include, but is not limited to, data in the control method of the power supply unit, etc.

[0151] In some embodiments, the electronic device may further include a display screen 62 , an input / output interface 63 , a communication interface 64 , a power supply 65 , and a communication bus 66 .

[0152] Those skilled in the art will understand that Figure 4 The structure shown in the figure does not constitute a limitation on the electronic device, and may include more or fewer components than shown in the figure.

[0153] For the description of the features in the electronic device provided by the embodiment of the present invention, reference can be made to the relevant description of the embodiment of the control method of the power supply unit, which will not be described in detail here.

[0154] It is understandable that if the control method of the power supply unit in the above embodiment is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the current technology, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium to execute all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), electrically erasable programmable ROM, register, hard disk, removable disk, CD-ROM, magnetic disk or optical disk, etc. Various media that can store program codes.

[0155] Based on this, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the control method of the power supply unit as described above are implemented.

[0156] For the description of the features in the computer-readable storage medium provided in the embodiment of the present invention, reference can be made to the relevant description of the embodiment of the control method of the power supply unit, which will not be described in detail here.

[0157] An embodiment of the present invention further provides a computer program product, including a computer program / instruction, which implements the steps of the control method of the power supply unit described in the above embodiment when executed by a processor.

[0158] For the description of the features in the computer program product provided in the embodiment of the present invention, reference can be made to the relevant description of the embodiment of the control method of the power supply unit, which will not be described in detail here.

[0159] The above is a detailed introduction to a control method, device, electronic device and storage medium for a power supply unit provided in an embodiment of the present invention. The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description.

[0160] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in the above description according to function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0161] The control method, device, electronic device and storage medium of a power supply unit provided by the present invention are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the present invention.

Claims

1. A control method for a power supply unit, characterized in that: A processor applied to a redundant power supply system, wherein the redundant power supply system further comprises N power supply units, wherein output ends of the N power supply units are connected in parallel, and a common connection point of the parallel connection is connected to a power supply end of a device, and a control end of the power supply unit is connected to an output end of the processor, and N is a positive integer; The control method of the power supply unit includes: Select i power supply units among N power supply units as working units, and the remaining Ni power supply units as backup redundant units; i is a positive integer, and i<N; configuring the output voltage of the power supply unit as the working unit to be the device required voltage to supply power to the device; The output voltage of the power supply unit serving as the backup redundant unit is configured as a first backup voltage; the first backup voltage is lower than the device required voltage.

2. The control method of the power supply unit according to claim 1, characterized in that: Also includes: If A power supply units in the working unit fail, A power supply units are selected from the backup redundant unit as units to be awakened; A is a positive integer, and A<i; The output voltage of the unit to be awakened is adjusted from the first backup voltage to a device required voltage.

3. The control method of the power supply unit according to claim 1, characterized in that: The processor is connected to the power supply unit via a power management bus; Configuring the output voltage of the power supply unit as the working unit to be the device required voltage, including: Writing a binary value corresponding to a device required voltage into a preset register of a power management bus connected to the working unit; Configuring the output voltage of the power supply unit serving as the backup redundant unit to be a first backup voltage includes: A binary value corresponding to the first backup voltage is written into a preset register of a power management bus connected to the backup redundant unit.

4. The control method of the power supply unit according to any one of claims 1 to 3, characterized in that: Also includes: Detecting the load rate of the working unit, and determining whether the load rate of the working unit is less than a first preset value; If yes, selecting a number of power supply units from the working units as dynamic redundant units; The output voltage of the dynamic redundant unit is configured as a second backup voltage; the second backup voltage is less than the device required voltage, and the second backup voltage is greater than the first backup voltage.

5. The control method of the power supply unit according to claim 4, characterized in that: Detecting the load rate of the working unit and determining whether the load rate of the working unit is less than a first preset value includes: Determining a current average value of the output currents of all the working units; Determine whether the current average value is less than a preset current, where the preset current is the product of a maximum output current of the power supply unit and a first preset value; If yes, determining that the load rate of the working unit is less than a first preset value; If not, it is determined that the load rate of the working unit is not less than the first preset value, and the process jumps again to the step of determining the current average value of the output currents of all the working units.

6. The control method of the power supply unit according to claim 5, characterized in that: The output current sampling terminals of all the power supply units are connected to the current detection terminal of the processor through a current sharing bus; Determining a current average value of the output currents of all the working units, comprising: The bus voltage of the current-sharing bus is read, and the bus voltage is determined as a current average value of the output currents of all the working units.

7. The control method of the power supply unit according to claim 5, characterized in that: Selecting a plurality of power supply units from the working units as dynamic redundant units includes: Determine the number of working units currently supplying power and the total current value of the output currents of all the working units; Calculating a ratio between the total current value and the preset current, and determining the ratio as a target number of power supply units that currently need to work; Subtracting the number of units from the target number, and using the difference as the number of dynamic redundant units to be selected; If the selected number is less than the number of units, selecting power supply units of the number of units from the working units as dynamic redundant units; If the selected number is not less than the number of units, one power supply unit is reserved as a working unit, and the remaining working units are determined as dynamic redundant units; After selecting a plurality of power supply units from the working units as dynamic redundant units, the method further includes: If the load rate of the working unit is greater than a second preset value, the output voltages of a plurality of power supply units in the dynamic redundant unit are adjusted from the second backup voltage to a device required voltage.

8. A control device for a power supply unit, characterized in that: A processor applied to a redundant power supply system, wherein the redundant power supply system further comprises N power supply units, wherein output ends of the N power supply units are connected in parallel, and a common connection point of the parallel connection is connected to a power supply end of a device, and a control end of the power supply unit is connected to an output end of the processor, and N is a positive integer; The control device of the power supply unit comprises: A work division unit is used to select i power supply units from N power supply units as working units and the remaining Ni power supply units as backup redundant units; i is a positive integer, and i<N; A first voltage configuration unit, configured to configure the output voltage of the power supply unit as the working unit to a device required voltage to supply power to the device; The second voltage configuration unit is used to configure the output voltage of the power supply unit serving as the backup redundant unit to a first backup voltage; the first backup voltage is lower than the required voltage of the device.

9. An electronic device, characterized in that: include: Memory for storing computer programs; A processor, configured to execute the computer program to implement the steps of the method for controlling a power supply unit according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the control method of the power supply unit according to any one of claims 1 to 7 are implemented.

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