CN115622416A

CN115622416A - Power utilization system and power supply method

Info

Publication number: CN115622416A
Application number: CN202111096203.1A
Authority: CN
Inventors: 刘造; 赵东升
Original assignee: XFusion Digital Technologies Co Ltd
Current assignee: XFusion Digital Technologies Co Ltd
Priority date: 2021-07-16
Filing date: 2021-09-15
Publication date: 2023-01-17

Abstract

The application relates to the technical field of power supply, in particular to a power utilization system and a power supply method. The power utilization system comprises a management module, at least one power utilization device and a power supply device; the power supply device includes: the device comprises a first control module, a second control module, a PFC conversion module and a direct current conversion module; the management module is used for identifying the highest voltage of the lowest input voltage specification of at least one electric device and determining a first target value of the bus voltage according to the highest voltage, wherein the first target value is not less than the highest voltage; the second control module is used for controlling the direct current conversion module to output bus voltage according to the first target value, so that the energy consumption of at least one electric device is saved while the normal work of all the electric devices in the at least one electric device is ensured; the first control module is used for controlling the bus voltage output by the PFC conversion module to change along with the change of the bus voltage so as to save the energy consumption of the power supply device.

Description

Power utilization system and power supply method

Technical Field

The application relates to the technical field of power supply, in particular to a power utilization system and a power supply method.

Background

In the traditional server box type equipment, homogenization competition is fierce, and with large-scale deployment of servers in a data center, users generally save electricity charges caused by energy efficiency improvement and also bring the electricity charges into the total cost of the servers. Therefore, a need for saving the power consumption of the server is raised.

Further, since a mechanical hard disk device such as a Hard Disk Drive (HDD) is provided in the server, the device has a high requirement for voltage stability. Therefore, the server generally adopts a power module to convert the input Alternating Current (AC) into a stable 12V dc to supply power to the following HDD, central Processing Unit (CPU), memory, fan, and other components.

Disclosure of Invention

The embodiment of the application provides an electricity utilization system and a power supply method, which are used for reducing the energy consumption of the electricity utilization system.

In a first aspect, an embodiment of the present application provides an electrical system, which includes a management module, at least one electrical device, and a power supply device; the power supply device includes: the device comprises a first control module, a second control module, a PFC conversion module and a direct current conversion module; the first control module is used for controlling the PFC conversion module to correct power factors and outputting bus voltage to the DC conversion module; the second control module is used for controlling the direct current conversion module to convert the bus voltage provided by the PFC conversion module into the bus voltage required by the at least one electric device; the management module is used for identifying the highest voltage of the lowest input voltage specification of the at least one electric device and determining a first target value of the bus voltage according to the highest voltage, wherein the first target value is not less than the highest voltage; the second control module is used for controlling the direct current conversion module to output bus voltage according to the first target value, so that the normal work of all the electric devices in the at least one electric device is ensured, and meanwhile, the energy consumption of the at least one electric device is saved; the first control module is used for controlling the bus voltage output by the PFC conversion module to change along with the change of the bus voltage so as to save the energy consumption of the power supply device.

In one possible implementation, the management module is configured to monitor all of the at least one powered device and identify a highest voltage of a lowest input voltage specification of the all powered devices.

In one possible implementation, the management module is configured to determine the highest voltage as the first target value and to transmit the first target value to the second control module.

In a possible implementation manner, the second control module is configured to control the dc conversion module to adjust the output voltage, so that the bus voltage output by the dc conversion module changes to the first target value.

In a possible implementation manner, the first control module is configured to control a bus voltage output by the PFC conversion module to decrease with a change in the bus voltage output by the dc conversion module, so as to save energy consumption of the power supply apparatus.

In a possible implementation manner, the electric system is a server, and the at least one electric device includes any one or a combination of more than one of a single board, a hard disk, a fan, a processor, a memory, a baseboard management controller, a complex programmable logic device CPLD, a dual in-line memory module DIMM, an external device interconnection bus interface PCIe, and a network card in the server.

In a second aspect, an embodiment of the present application provides a power supply method, which is applied to a power consumption system, where the power consumption system includes a management module, at least one power consumption device, and a power supply device; the power supply device includes: the device comprises a first control module, a second control module, a PFC conversion module and a direct current conversion module; the first control module is used for controlling the PFC conversion module to correct power factors and outputting bus voltage to the DC conversion module; the second control module is used for controlling the direct current conversion module to convert the bus voltage provided by the PFC conversion module into the bus voltage required by the at least one electric device; the method comprises the following steps: the management module identifies the highest voltage of the lowest input voltage specification of the at least one electric device and determines a first target value of the bus voltage according to the highest voltage, wherein the first target value is not less than the highest voltage; the second control module controls the direct current conversion module to output bus voltage according to the first target value, so that the energy consumption of at least one electric device is saved while the normal work of all electric devices in the at least one electric device is ensured; the first control module controls the bus voltage output by the PFC conversion module to change along with the change of the bus voltage so as to save the energy consumption of the power supply device.

In one possible implementation, the identifying, by the management module, a highest voltage of a lowest input voltage specification of the at least one powered device includes: the management module monitors all of the at least one powered device and identifies a highest voltage in a lowest input voltage specification of the all powered devices.

In one possible implementation, the determining a first target value of the bus voltage according to the highest voltage includes: the management module determines the highest voltage as the first target value and communicates the first target value to the second control module.

In a possible implementation manner, the second control module controls the dc conversion module to output the bus voltage according to the first target value, and the outputting the bus voltage includes: the second control module controls the direct current conversion module to adjust the output voltage, so that the bus voltage output by the direct current conversion module is changed to the first target value.

In one possible implementation manner, the controlling, by the first control module, a bus voltage output by the PFC conversion module to vary with a variation of the bus voltage includes: the first control module controls the bus voltage output by the PFC conversion module to be reduced along with the change of the bus voltage output by the DC conversion module, so that the self energy consumption of the power supply device is saved.

In a possible implementation manner, the electric system is a server, and the at least one electric device includes any one or a combination of more than one of a single board, a hard disk, a fan, a processor, a memory, a baseboard management controller, a complex programmable logic device CPLD, a dual in-line memory module DIMM, an external device interconnect bus interface PCIe, and a network card in the server.

According to the scheme provided by the embodiment of the application, the energy consumption of the power utilization system can be reduced under the condition that the component cost of the power utilization system is not increased. By taking a server as an example, 5W-6W of energy can be saved through the power supply scheme of the embodiment of the application.

Drawings

FIG. 1 is a schematic diagram of a server;

fig. 2 is a schematic structural diagram of a server according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a buck conversion circuit according to an embodiment of the present disclosure;

fig. 4 is a schematic diagram of conversion efficiency of a power supply scheme provided in an embodiment of the present application;

fig. 5 is a schematic diagram of an LLC topology circuit structure provided in the embodiment of the present application;

fig. 6 is a schematic structural diagram of a PFC conversion module according to an embodiment of the present disclosure;

fig. 7 is a flowchart of a power supply method provided in an embodiment of the present application;

fig. 8 is a flowchart of a power supply method according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings. It should be apparent that the embodiments described in this specification are only some embodiments of the present application, and not all embodiments.

Reference throughout this specification to "one embodiment," "some embodiments," or the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the specification. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather mean "one or more but not all embodiments" unless specifically stated otherwise.

Wherein in the description of this specification, "/" indicates an or meaning, for example, a/B may indicate a or B; "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of the present specification, "a plurality" means two or more.

In the description of the present specification, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to imply that the number of indicated technical features is significant. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless otherwise specifically stated.

Fig. 1 shows a server power supply block diagram. The power module of the server can supply power for the electric device on the server single board. The power module includes an Electromagnetic Interference (EMI) filter, a slow start, a Power Factor Correction (PFC) module, and a Direct Current (DC/DC) conversion module 11. The alternating current voltage input to the power module by the external power supply passes through the EMI filter and is started slowly, and then is converted into fixed bus voltage at the PFC module. The fixed bus voltage is typically 400V dc. The fixed bus voltage is converted to a fixed bus voltage by DC/DC 11. The fixed bus voltage is typically 12V dc. The bus voltage is used for supplying power to the electric device on the server single board. The electric device on the server board includes a CPU, dual Inline Memory Modules (DIMMs), a Baseboard Management Controller (BMC), a Complex Programmable Logic Device (CPLD), an HDD, a FAN (FAN), a Peripheral Component Interconnect bus interface (PCIe), and the like. The bus Voltage is converted by a Voltage Regulator Down (VRD) and applied to the CPU or the DIMM. The bus voltage is converted by the DC/DC 12 and then applied to the BMC or the CPLD.

In this specification, a voltage obtained by further converting the bus voltage may be referred to as a subsequent stage voltage. The VRD converted voltage and the DC/DC 12 converted voltage as in FIG. 1 may be referred to as the post-stage voltage.

In the solution described in fig. 1, the bus voltage and the bus voltage are fixed. In order to save the energy consumption of the server, one way is to pursue the conversion efficiency from the alternating-current voltage input by the external power supply to the bus voltage, and the other way is to pursue the conversion efficiency from the bus voltage to the backward voltage. For example, efficiency of VRDs is sought that convert bus voltage to supply voltage to the CPU and DIMMs. The two ways of saving the energy consumption of the server will result in the improvement of the cost of the server components, and the energy-saving benefit brought by the improvement of the energy conversion efficiency is offset by the component cost.

The embodiment of the application provides a power supply scheme, and the bus voltage can be dynamically adjusted according to the highest voltage of the lowest input voltage specification of the electric utilization device in the electric utilization system, so that the efficiency of converting the bus voltage to the backward-stage voltage is improved. For example, if the electric devices in the electric system are device a, device B, and device C, and the lowest input voltages thereof are 5V, 6V, and 7V, respectively, the bus voltage can be adjusted to 7V. The power supply scheme can also dynamically adjust the bus voltage according to the adjusted bus voltage. The conversion efficiency of the bus voltage after dynamic adjustment to the backward stage voltage is kept unchanged. Thereby reducing the energy consumption of the power utilization system as a whole.

In some embodiments, the powered system may be a server. In one example, the powered system may be a box server. The electric device can comprise a single board of the server, a hard disk, a fan, a network card and the like.

In some embodiments, the minimum input voltage specification of the powered device may refer to a minimum voltage at which the powered device can be driven to operate normally. The minimum input voltage specification of the powered device may also be referred to as a minimum required voltage or a minimum input voltage of the powered device. The power consumption system may include a plurality of power consumption devices, and the maximum voltage of the lowest input voltage specification of the power consumption devices in the power consumption system may be the lowest input voltage specification of the power consumption device having the highest lowest input voltage specification among the plurality of power consumption devices. In other words, the maximum voltage of the lowest input voltage specification of the electric consumer in the electric system is the highest voltage among the plurality of lowest input voltage specifications, and the plurality of lowest input voltage specifications correspond to the plurality of electric consumers as well.

Next, taking a power utilization system, i.e., a server, as an example, a power supply scheme provided in the embodiments of the present application is described as an example.

Fig. 2 shows a server. The system comprises a power supply device 200, at least one electric device and a management module. The power supply apparatus 200 may include a PFC conversion module 201 and a dc conversion module 202. The PFC conversion module 201 may output a bus voltage Va to the dc conversion module 202, and the dc conversion module 202 may convert the bus voltage into a bus voltage Vb. In one example, the PFC conversion module 201 may be specifically a PFC, and the direct current conversion module 202 may be a DC/DC. Illustratively, as shown in fig. 2, the power supply apparatus 200 may further include an EMI filter 203 and a soft start 204. The PFC conversion module may output the bus voltage Va to the dc conversion module while performing power factor correction.

The power supply device 200 may further include a control module C1 (not shown) and a control module C2 (not shown). The control module C1 may control the PFC conversion module 201, for example, the PFC conversion module 201 may be controlled to perform power factor correction, and output a bus voltage to the dc conversion module 202. The control module C2 may control the dc conversion module 202, for example, control the dc conversion module 202 to convert the bus voltage provided by the PFC conversion module 201 into the bus voltage required by the at least one electrical device.

In some embodiments, the at least one powered device may include a CPU, DIMM, BMC, CPLD, HDD, FAN (FAN), PCIe, and the like. In other embodiments, the at least one powered device may further include other powered devices, which are not listed here.

The bus voltage Vb can be used to drive the at least one consumer. The at least one consumer may be referred to as a subsequent consumer of the bus voltage, and the at least one consumer may be referred to as a subsequent load of the bus voltage or a subsequent consumer of the bus voltage. The bus voltage Vb may be converted into a post-stage voltage, and then used to drive the electric device. For example, bus voltage Vb can be converted by VRD in FIG. 2 to a later stage voltage for driving the CPU and/or DIMM to operate. For another example, bus voltage Vb may be DC/DC converted to a back-stage voltage for driving BMC and/or CPLD.

Next, a power supply scheme provided in an embodiment of the present application will be described by way of example with reference to the structure shown in fig. 2.

In some embodiments, the server may provide bus voltage tunable functionality, i.e., the server may provide bus voltage tunable options. Based on the bus voltage tunable option, the server may choose to enter a bus voltage tunable mode. In a state where the bus voltage adjustable function is not turned on, i.e., the server is not in the bus voltage adjustable mode, the bus voltage Vb may default to 12Vdc. Where 12Vdc represents a dc voltage of 12. When the server turns on the bus voltage adjustment function, i.e., enters the bus voltage adjustment mode, the bus voltage is changed from a default value (e.g., 12 Vdc) to a floating adjustable bus voltage.

The management module can determine the target bus voltage according to the dynamic change of the highest voltage of the lowest input voltage specification of the post-stage electric device of the bus voltage. In other words, the management module may identify a highest voltage of the lowest input voltage specification of the at least one powered device and determine the target bus voltage based on the highest voltage. The target bus voltage is changed along with the change of the highest voltage of the lowest input voltage specification of the post-stage electric device of the bus voltage. It will be appreciated that the highest voltage of the lowest input voltage specification of the powered device of the bus voltage may be different at different times, and that the target bus voltage may vary as the highest voltage of the lowest input voltage specification of the powered device of the bus voltage varies.

The target bus voltage is not less than the maximum voltage, so that all the electric devices in at least one electric device can be ensured to work normally.

In some embodiments, the highest voltage of the lowest input voltage specification of the rear stage consumers of the bus voltage may be the highest voltage of the lowest required voltages of the consumers in the operating state among the rear stage consumers of the bus voltage. That is, the target bus voltage may be changed according to a change in the highest voltage among the lowest required voltages of the electric devices in an operating state among the electric devices of the subsequent stages of the bus voltage.

Specifically, the management module may determine the operating consumers in the consumers subsequent to the bus voltage, and determine the minimum required voltage of the operating consumers. The electric device in the operating state refers to an electric device in a normal operating state, such as a fan that is running, a CPU that is processing data, and the like. The minimum required voltage of the electric device is the lowest voltage at which the electric device can be driven to operate or normally operate. When there are a plurality of electric devices in the operating state, the minimum required voltage of the electric device in the operating state is the minimum required voltage of the electric device having the highest minimum required voltage among the plurality of electric devices in the operating state. For example, the voltage range for driving a Solid State Disk (SSD) is 11V-12V, that is, the minimum required voltage of the Solid State Disk is 11V; the voltage range for driving the HDD is 11.5V to 12V, i.e., the minimum required voltage of the HDD is 11.5V. When only the solid state disk and the HDD in the rear-stage electric device in the bus voltage are in the running state, the minimum required voltage of the electric device in the running state is 11.5V. It will be appreciated that at different times, the devices in the bus voltage at which the subsequent powered device is in operation may be different, and thus, the minimum required voltage resulting in an operating powered device may also be different.

In one example, the management module may use a minimum required voltage of an operating powered device among the powered devices of the subsequent stage of the bus voltage as the target bus voltage. In one example, the management module may add a preset value to a minimum required voltage of an operating power consumption device of the power consumption devices in the subsequent stage of the bus voltage to obtain the target bus voltage. The preset value may be preset empirically or experimentally. In one example, by setting the preset value, it is a target bus voltage that is not higher than the default bus voltage (e.g., 12 Vdc). In one example, the preset value may be 0.1V. In another example, the preset value may be 0.05V. Etc., which are not listed here.

In some embodiments, a management module in the powered system may monitor all of the at least one powered device and identify a highest voltage in a lowest input voltage specification for the all powered devices.

In some embodiments, the management module in the powered system may determine a highest voltage of the lowest input voltage specification of the at least one powered device identified as the target bus voltage.

In some embodiments, the management module may specifically be a BMC in the server.

When the management module determines the target bus voltage, the management module may notify the control module C2 in the power supply device of the target bus voltage. The control module C2 may control the dc conversion module 202 of the power supply device 200 to output the bus voltage according to the target bus voltage. Alternatively, the dc conversion module 202 of the power supply device 200 is controlled to output a voltage equal to or close to the target bus voltage as the bus voltage.

The control module C2 may control the dc conversion module 202 to adjust the output voltage, so that the bus voltage output by the dc conversion module 202 changes to the target bus voltage.

In addition, it is understood that the target bus voltage is generally less than 12Vdc, and therefore, the process of outputting the bus voltage according to the target bus voltage may also be referred to as a process of bus voltage down-regulation.

When the dc conversion module 202 outputs the bus voltage Vb in accordance with the target bus voltage, the conversion efficiency of the bus voltage Vb into the post-stage voltage can be improved. Next, an example description is made.

The bus voltage is converted into a rear-stage voltage for driving the rear-stage power-driven device to operate, usually by a buck converter circuit (i.e., buck voltage reduction circuit). For a buck converter circuit, the smaller the difference between the input voltage and the output voltage, the higher the conversion efficiency. For example, when a chip (e.g., a CPU, a memory, etc.) is driven, the bus voltage needs to be reduced to a voltage required by the chip, such as 5v,3.3v,1.8v, etc., by a buck converter circuit. The smaller the difference between the bus voltage and the voltage required by the chip, the higher the conversion efficiency of the buck converter circuit.

In one illustrative example, reference may be made to the buck conversion circuit shown in FIG. 3. The loop 1 is the time when the power supply directly provides the electric energy for the load and simultaneously stores the energy for the inductor, and the loop 2 is the time when the inductor provides the electric energy for the load after the loop 1 is disconnected. The smaller the voltage difference between the voltage of the circuit 1 and the average voltage is, the larger the duty ratio is, the longer the circuit 1 is operated, and the higher the energy efficiency is. The average voltage is an average value of the voltage of the circuit 1 and the voltage of the circuit 2. Similarly, when the difference between the bus voltage and the subsequent voltage is smaller, the conversion efficiency of the bus voltage to the subsequent voltage is higher.

Therefore, the power supply scheme provided by the embodiment of the application improves the conversion efficiency of the bus voltage to the backward stage voltage.

The control module C1 may control the bus voltage output by the PFC conversion module 201 to decrease with the change of the bus voltage output by the dc conversion module 201, so as to save energy efficiency of the power supply apparatus 200.

Specifically, after the target bus voltage is determined, the bus voltage may be synchronously adjusted so that the bus voltage changes with the change of the target bus voltage, so that the conversion efficiency of the power supply device 200 itself is equal to that before after the bus output by the dc conversion module 202 changes. In other words, the control module C1 may dynamically adjust the bus voltage Va output by the PFC conversion module 201 according to the bus voltage Vb output by the dc conversion module 202, so that the bus voltage Va changes with the change of the bus voltage Vb, and the conversion efficiency of the power supply apparatus 200 is equal to that before. Specifically, referring to fig. 4, the conversion efficiency of the power supply apparatus 200 is equal to or not lower than the previous conversion efficiency, and the conversion efficiency of the bus power Vb to the backward voltage is improved. The previous conversion efficiency may refer to the conversion efficiency of the power module shown in fig. 1.

The total efficiency of the end-to-end energy efficiency of the server is determined by the conversion efficiency of the power supply device 200 itself and the conversion efficiency of the bus voltage to the backward voltage. If the conversion efficiency of the power supply device 200 is equal to that before, and the conversion efficiency of the bus power Vb to the backward-stage voltage conversion is improved, the total efficiency of the end-to-end energy efficiency of the server is also improved. Illustratively, the total efficiency of the server end-to-end energy efficiency = the conversion efficiency of the power supply 200 itself-the conversion efficiency of the bus voltage to the back-stage voltage. The conversion efficiency of the power supply device 200 is kept unchanged by adjusting the bus voltage according to the bus voltage, but the conversion efficiency of the bus voltage to the backward voltage conversion is improved, so that the total efficiency is improved, and the purpose of improving the energy efficiency of the whole system is achieved.

Next, a scheme of adjusting the bus voltage Va in accordance with the bus voltage Vb will be described as an example.

The input voltage of the dc conversion module 202 may be determined according to the target bus voltage or the bus voltage Vb output by the dc conversion module 202 under the condition of optimal energy efficiency. The input voltage of the dc conversion module 202 may be set as the target bus voltage under the condition of optimal energy efficiency.

In some embodiments, the scheme for determining the target bus voltage is described by taking the LLC topology circuit shown in fig. 5 as an example of the dc conversion module 202. As shown in fig. 5, the topology circuit includes a power source Vin, a MOS transistor Q1, a MOS transistor Q2, a capacitor Cr, an inductor Ls, an inductor Lp, a transistor D1, a transistor D2, a capacitor Cout, and a resistor R. The voltage output from the power source Vin corresponds to the bus voltage Va. The bus voltage Va is converted into an ac voltage by the MOS transistor Q1 and the MOS transistor Q2. The alternating voltage is reduced by the voltage transformer. The reduced ac voltage is converted into a dc voltage by the action of the transistors D1 and D2. As shown in fig. 6, the transformer uses n:1:1. when the bus voltage Va = the bus voltage Vb × 2 × n, the dc conversion module 202 has the highest conversion efficiency, i.e., the best efficiency. In one example, the bus voltage Vb may be set to 12.3v, n to 16, and then the energy efficiency is optimized when the bus voltage Va =12.3 × 2 × 16=393.6 vdc. Therein, 393.6Vdc is represented as a dc voltage of 393.6V. In another example, the bus voltage Vb may be set to 11v, n to 16, and then the energy efficiency is optimized when the bus voltage Va =11 × 2 × 16= 352vdc. Wherein 352Vdc is represented by a dc voltage of 352V. Therefore, the power supply device 200 can determine the target bus voltage according to the bus voltage Vb output by the dc conversion module 202, so that the PFC conversion module 201 outputs the bus voltage Va to the dc conversion module 202 according to the target bus voltage, thereby realizing that the bus voltage Va changes along with the change of the bus voltage Vb, and enabling the conversion efficiency of the power supply device 200 to be not lower than the previous conversion efficiency.

In some embodiments, the control module C1 may implement the above-described scheme for determining a target bus voltage from a bus voltage. In one example, the control module C1 may be a Digital Signal Processing (DSP).

Next, a scheme of adjusting the bus voltage Vb output from the PFC conversion module 201 according to the target bus voltage will be described as an example.

In some embodiments, the PFC conversion module 201 may employ the circuit shown in fig. 6 to output the bus voltage Vb. As shown in fig. 6, the circuit includes a bridge structure composed of four transistors, an inductor L2, a transistor D3, an element V, a capacitor C2, and a circuit R2. The control module C1 may control the magnitude of the input voltage of the PFC conversion module 201 through a Pulse Width Modulation (PWM) signal, so as to control the magnitude of the bus voltage Vb output by the PFC conversion module 201. A sampling pin of an analog to digital converter (ADC) of the control module C1 may collect a bus voltage Vb. The control module C1 may compare the bus voltage Vb with the target bus voltage, and then adjust the bus voltage Vb output by the PFC conversion module 201 by adjusting the PWM signal, so that the bus voltage Vb output by the PFC conversion module 201 is consistent with or close to the target bus voltage. In one example, the control module C1 may be a DSP.

The power supply scheme provided by the embodiment of the application can reduce the energy consumption of the power utilization system under the condition of not increasing the component cost of the power utilization system. By taking a server as an example, 5W-6W of energy can be saved through the power supply scheme of the embodiment of the application.

The above example introduces a power supply scheme, and then, based on the above introduced power supply scheme, the embodiment of the present application further provides a power supply method. Referring to fig. 7, the power scheme includes the following steps.

When the server is judged to normally operate, whether the energy-saving bus down-regulation mode is entered or not can be judged, wherein the energy-saving bus down-regulation mode can be a bus voltage adjustable mode.

If the server enters the energy-saving bus down-regulation mode, the BMC can identify the back-stage load. Then, the down-regulation value of the output power of the power supply module may be set according to the subsequent stage load. The power module may refer to the power supply apparatus 200, and the output voltage thereof may refer to a bus voltage Vb output by the dc conversion module 202 of the power supply apparatus 200. The drop-off value may refer to the difference between a default bus voltage (e.g., 12 Vdc) and a target bus voltage.

After determining the turndown value, power efficiency adaptation may be performed. In particular, the bus voltage as well as the bus voltage may be adjusted. Specifically, reference may be made to the above description, which is not repeated herein.

Based on the above-described power supply scheme, an embodiment of the present application further provides a power supply method, which may be applied to an electric system, where the electric system includes a management module, at least one electric device, and a power supply device; the power supply device includes: the device comprises a first control module, a second control module, a PFC conversion module and a direct current conversion module; the first control module is used for controlling the PFC conversion module to correct power factors and outputting bus voltage to the DC conversion module; the second control module is used for controlling the direct current conversion module to convert the bus voltage provided by the PFC conversion module into the bus voltage required by the at least one electric device.

Referring to fig. 8, the method includes:

step 801, the management module identifies a highest voltage of a lowest input voltage specification of the at least one electric device, and determines a first target value of a bus voltage according to the highest voltage, wherein the first target value is not less than the highest voltage;

step 802, the second control module controls the dc conversion module to output a bus voltage according to the first target value, so as to save energy consumption of the at least one electrical device while ensuring normal operation of all electrical devices in the at least one electrical device;

in step 803, the first control module controls the bus voltage output by the PFC conversion module to change along with the change of the bus voltage, so as to save energy efficiency of the power supply device itself.

In some embodiments, the management module identifying a highest voltage of a lowest input voltage specification of the at least one powered device comprises: the management module monitors all of the at least one powered device and identifies a highest voltage of a lowest input voltage specification of the all powered devices.

In some embodiments, said determining a first target value of a bus voltage from said highest voltage comprises: the management module determines the highest voltage as the first target value and communicates the first target value to the second control module.

In some embodiments, the second control module controls the dc conversion module to output the bus voltage according to the first target value includes: the second control module controls the direct current conversion module to adjust the output voltage, so that the bus voltage output by the direct current conversion module is changed to the first target value.

In some embodiments, the controlling, by the first control module, the bus voltage output by the PFC conversion module to vary with the variation of the bus voltage includes: the first control module controls the bus voltage output by the PFC conversion module to be reduced along with the change of the bus voltage output by the direct current conversion module, so that the energy efficiency of the power supply device is saved.

In some embodiments, the powered system is a server, and the at least one powered device includes any one or a combination of more than one of a board, a hard disk, a fan, a processor, a memory, a baseboard management controller, a complex programmable logic device CPLD, a dual in-line memory module DIMM, an external device interconnect bus interface PCIe, and a network card in the server.

The power supply method provided by the embodiment of the application can reduce the energy consumption of the power utilization system under the condition that the component cost of the power utilization system is not increased. By taking a server as an example, 5W-6W of energy can be saved through the power supply scheme of the embodiment of the application.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. An electric system is characterized by comprising a management module, at least one electric device and a power supply device; the power supply device includes: the device comprises a first control module, a second control module, a PFC conversion module and a direct current conversion module; the first control module is used for controlling the PFC conversion module to correct power factors and outputting bus voltage to the DC conversion module; the second control module is used for controlling the direct current conversion module to convert the bus voltage provided by the PFC conversion module into the bus voltage required by the at least one electric device;

the management module is used for identifying the highest voltage of the lowest input voltage specification of the at least one electric device and determining a first target value of the bus voltage according to the highest voltage, wherein the first target value is not less than the highest voltage;

the second control module is used for controlling the direct current conversion module to output bus voltage according to the first target value, so that the energy consumption of at least one electric device is saved while the normal work of all the electric devices in the at least one electric device is ensured;

the first control module is used for controlling the bus voltage output by the PFC conversion module to change along with the change of the bus voltage so as to save the energy consumption of the power supply device.

2. The system of claim 1, wherein the management module is configured to monitor all of the at least one powered device and identify a highest voltage of a lowest input voltage specification of the all powered devices.

3. The system of claim 2, wherein the management module is configured to determine the maximum voltage as the first target value and to communicate the first target value to the second control module.

4. The system of claim 1, wherein the second control module is configured to control the dc conversion module to regulate the output voltage such that the bus voltage output by the dc conversion module varies to the first target value.

5. The system of claim 1, wherein the first control module is configured to control the bus voltage output by the PFC conversion module to decrease with a change in the bus voltage output by the dc conversion module, so as to save energy consumption of the power supply apparatus.

6. The system of claim 1, wherein the powered system is a server, and the at least one powered device comprises any one or a combination of more of a single board, a hard disk, a fan, a processor, a memory, a baseboard management controller, a Complex Programmable Logic Device (CPLD), a dual in-line memory module (DIMM), an external device interconnect bus interface (PCIe), and a network card in the server.

7. The power supply method is applied to a power utilization system, wherein the power utilization system comprises a management module, at least one power utilization device and a power supply device; the power supply device includes: the device comprises a first control module, a second control module, a PFC conversion module and a direct current conversion module; the first control module is used for controlling the PFC conversion module to correct power factors and outputting bus voltage to the DC conversion module; the second control module is used for controlling the direct current conversion module to convert the bus voltage provided by the PFC conversion module into the bus voltage required by the at least one electric device;

the method comprises the following steps:

the management module identifies the highest voltage of the lowest input voltage specification of the at least one electric device and determines a first target value of the bus voltage according to the highest voltage, wherein the first target value is not less than the highest voltage;

the second control module controls the direct current conversion module to output bus voltage according to the first target value, so that the energy consumption of at least one electric device is saved while the normal work of all electric devices in the at least one electric device is ensured;

the first control module controls the bus voltage output by the PFC conversion module to change along with the change of the bus voltage so as to save the energy consumption of the power supply device.

8. The method of claim 7, wherein the management module identifying a highest voltage of a lowest input voltage specification of the at least one powered device comprises:

the management module monitors all of the at least one powered device and identifies a highest voltage in a lowest input voltage specification of the all powered devices.

9. The method of claim 8, wherein determining a first target value for a bus voltage based on the highest voltage comprises:

the management module determines the highest voltage as the first target value and communicates the first target value to the second control module.

10. The method of claim 7, wherein the second control module controls the dc conversion module to output a bus voltage in accordance with the first target value comprises:

the second control module controls the direct current conversion module to adjust the output voltage, so that the bus voltage output by the direct current conversion module is changed to the first target value.

11. The method of claim 7, wherein the first control module controlling the bus voltage output by the PFC conversion module to vary with the variation of the bus voltage comprises:

the first control module controls the bus voltage output by the PFC conversion module to be reduced along with the change of the bus voltage output by the DC conversion module, so that the self energy consumption of the power supply device is saved.

12. The method of claim 7, wherein the powered system is a server, and the at least one powered device comprises any one or more of a single board, a hard disk, a fan, a processor, a memory, a baseboard management controller, a Complex Programmable Logic Device (CPLD), a dual in-line memory module (DIMM), a peripheral component interconnect bus interface (PCIe), and a network card in the server.