CN116505504A

CN116505504A - Power supply system, power supply unit and server

Info

Publication number: CN116505504A
Application number: CN202310090867.XA
Authority: CN
Inventors: 王俊; 李洪涛; 赵东升; 陈浩; 于春伟
Original assignee: Huawei Digital Power Technologies Co Ltd
Current assignee: Huawei Digital Power Technologies Co Ltd
Priority date: 2023-01-30
Filing date: 2023-01-30
Publication date: 2023-07-28

Abstract

A power supply system, comprising: the power supply system comprises electric equipment and a plurality of power supply units. When the power supply units supply power to the electric equipment, one power supply unit is selected from the power supply units as a host. The host can receive the load rates of other power supply units, and control the power supply units to enter one of a power supply mode, a standby mode and a sleep mode according to the load rates of the power supply units so as to improve the power supply efficiency of each power supply unit. In addition, the power supply units do not need electric equipment to participate, intelligent networking, intelligent control and intelligent management among a plurality of power supply units can be realized, and the whole power supply system can work with high reliability and high efficiency.

Description

Power supply system, power supply unit and server

Technical Field

The present invention relates to the field of battery management technologies, and in particular, to a power supply system, a power supply unit, and a server.

Background

Electric equipment such as outdoor cabinets, communication base stations, servers, new energy automobiles and the like are provided with a plurality of power supply units (power supply unit, PSU). The PSUs are connected in parallel and supply power to the electric equipment. When multiple PSUs are installed, the consumer needs software and hardware to manage the multiple PSUs to work cooperatively. In general, the electric equipment and the PSU are produced by different manufacturers, and software and hardware configured by the electric equipment and the PSU are different, so that the adaptability between the electric equipment and the PSU is poor, and the assembly difficulty between the electric equipment and the PSU is increased.

Disclosure of Invention

In order to solve the above-mentioned problems, in the embodiments of the present application, a power supply system is provided, in which a plurality of PSUs of the power supply system are connected in a communication manner, one PSU of the PSUs may receive a load factor of another power supply unit, and control itself and the other power supply unit to enter a mode according to the load factor of itself and the load factor of the other power supply unit, so as to bypass management of electric equipment, so as to improve suitability between each component of the power supply system, and reduce difficulty in assembling between the electric equipment and the power supply unit. In addition, the application also provides a power supply unit and a server corresponding to the power supply system.

For this reason, the following technical solutions are adopted in the embodiments of the present application:

in a first aspect, an embodiment of the present application provides a power supply system, including: the power supply units are electrically connected with the electric equipment and comprise controllers, and the controllers are used for controlling the power supply units to provide electric energy for the electric equipment; the power supply units comprise a host, wherein the host is a power supply unit for controlling other power supply units to work, and a controller of the host controls the controllers of the other power supply units; the host is used for controlling the battery supply units to be in one of a power supply mode, a standby mode and a sleep mode respectively based on the load rates of the battery supply units; the load factor is the ratio between the power supply power of the power supply unit when supplying power and the rated power of the power supply unit; the power supply mode refers to a mode that the power supply unit supplies power to the electric equipment; the standby mode is a mode in which the output voltage of the power supply unit is smaller than the rated voltage of the electric equipment and does not supply power to the electric equipment; the sleep mode is a mode in which the output voltage of the power supply unit is 0 and the electric equipment is not powered.

In this embodiment, when the plurality of power supply units supply power to the electric device, one power supply unit is selected from the plurality of power supply units as a host. The host can receive the load rates of other power supply units, and control the power supply units to enter one of a power supply mode, a standby mode and a sleep mode according to the load rates of the power supply units so as to improve the power supply efficiency of each power supply unit. In addition, the power supply units do not need electric equipment to participate, intelligent networking, intelligent control and intelligent management among a plurality of power supply units can be realized, and the whole power supply system can work with high reliability and high efficiency.

In one embodiment, the method further comprises: and the communication bus is respectively coupled with the electric equipment and the controllers of the power supply units and is used for establishing communication connection between the electric equipment and the power supply units and between the power supply units.

In this embodiment, the communication bus may enable communication connections to be established between the plurality of power supply units and the powered device. The plurality of power supply units perform data transmission through the communication bus, and the participation of electric equipment can be bypassed, so that the suitability of each component of the power supply system is improved, and the assembly difficulty between the electric equipment and the power supply units is reduced.

In one embodiment, the method further comprises: and the current equalizing bus is respectively coupled with the controllers of the power supply units and used for receiving the analog signals of the power supply units and sending the analog signals to the power supply units.

In this embodiment, the current equalizing bus is coupled to a plurality of power supply units, respectively. The power supply unit can quickly detect the average load rate of the power supply unit in the power supply mode through the current sharing bus, and the power supply unit in the standby mode can quickly exit the standby mode without relying on a system communication awakening function with a slower speed, so that the fluctuation range of output voltage is reduced, and the reliability of electric equipment is improved.

In one embodiment, the method further comprises: and the busbar bus is respectively and electrically connected with the electric equipment and the plurality of power supply units and is used for inputting the electric energy of the plurality of power supply units to the electric equipment.

In the embodiment, a plurality of power supply units in a power supply mode are connected in parallel to the busbar bus, so that the electric energy of the power supply units is gathered together and supplied to the electric equipment, and the stability of the power supply system is improved.

In one embodiment, the output voltage of the power supply unit in the standby mode is greater than the lower limit voltage of the operating voltage range of the powered device.

In this embodiment, the output voltage of the power supply unit in the standby mode is generally greater than the minimum voltage of the operating voltage range of the electrical device when the electrical device is operating normally. When the output voltage of the power supply unit in the power supply mode drops to the minimum voltage of the working voltage range when the electric equipment works normally, the power supply unit in the standby mode supplies power to the electric equipment, and the phenomenon that the voltage of the electric equipment is too low to be down due to the fact that the output voltage of the power supply unit in the power supply mode continues to drop is avoided.

In one embodiment, the power supply units are provided with priority information, and each of the power supply units is configured to receive the priority information of other power supply units except for the power supply unit through the communication bus, and set a power supply unit corresponding to the highest priority information or the lowest priority information of the power supply units as the host.

In this embodiment, the plurality of power supply units are respectively provided with priority information, so that the plurality of power supply units compete according to the priority information, and one power supply unit is selected as a host, so that the power supply unit is responsible for control logic and calculation logic of the whole power supply system, and monitors, adjusts and manages the working state of the slave, thereby avoiding participation of electric equipment.

In one embodiment, the host is further configured to set highest priority information among the priority information of the plurality of power supply units as lowest priority information at intervals of a set time; or, the interval setting time sets lowest priority information among the priority information of the plurality of power supply units as highest priority information.

In the embodiment, the master machine can dynamically switch modes by changing the priority information of the power supply units, so that the problems that the master machine and part of the slave machines always work in a power supply mode or a standby mode, and the other slave machines work in a sleep mode, so that the service lives of the energy storage devices of the power supply units are unbalanced and the like are avoided.

In one embodiment, the host is specifically configured to receive an average load rate of the plurality of power supply units through the current sharing bus, and control the power supply units in the power supply mode to exit the power supply mode in response to the average load rates of the plurality of power supply units being less than a set load rate; and controlling the power supply units in the standby mode and/or the sleep mode to enter a power supply mode in response to the average load rates of the power supply units being greater than the set load rate.

In this embodiment, when the power supply units in the power supply mode determine that the average load ratio of all the power supply units is less than the half-load ratio or the half-load accessory load ratio, the host computer makes part of the power supply units in the power supply mode exit the power supply mode and switch to the standby mode or the sleep mode, so as to achieve the purpose of increasing the load ratio of the remaining power supply units in the power supply mode. And when the power supply units in the power supply mode determine that the average load rate of all the power supply units is greater than the half-load rate or the half-load accessory load rate, the host computer enables part of the power supply units in the standby mode to exit the standby mode and switch to the power supply mode so as to improve the load rate of the power supply units in the power supply mode.

In one embodiment, the power supply unit includes a voltage sampling circuit, and the voltage sampling circuit of the power supply unit in the standby mode collects the voltage of the bus bar bus and enters the power supply mode in response to the voltage of the bus bar bus being not greater than the output voltage of the power supply unit in the standby mode.

In this embodiment, the power supply unit includes a voltage sampling circuit. The voltage sampling circuit collects the voltage of the busbar bus. When the voltage of the bus drops, the power supply unit rapidly detects that the bus is abnormal through the voltage sampling circuit, and the power supply unit in the standby mode is prevented from responding untimely, so that the electric equipment is likely to be in downtime risk.

In a second aspect, embodiments of the present application provide a power supply unit, including: a controller coupled to the controller of the at least one power supply unit for controlling the at least one battery supply unit to be in one of a power supply mode, a standby mode and a sleep mode, respectively, based on a load rate of the at least one battery supply unit; the load factor is the ratio between the power supply power of the power supply unit when supplying power and the rated power of the power supply unit; the power supply mode is a mode for supplying power to electric equipment; the standby mode is a mode in which the output voltage of the power supply unit is smaller than the rated voltage of the electric equipment and does not supply power to the electric equipment; the sleep mode is a mode in which the output voltage of the power supply unit is 0 and the electric equipment is not powered.

In this embodiment, the power supply unit may receive the load rates of the other power supply units, and control the own and other power supply units to enter one of the power supply mode, the standby mode and the sleep mode according to the own load rate and the load rates of the other power supply units, so as to improve the power supply efficiency of each power supply unit. In addition, the power supply unit does not need electric equipment to participate, intelligent networking, intelligent control and intelligent management between the power supply unit and other power supply units can be realized, and the whole power supply system can work with high reliability and high efficiency.

In one embodiment, when the power supply unit is in the standby mode, the output voltage of the power supply unit is greater than the lower limit voltage of the working voltage range of the electric equipment powered by the power supply unit.

In one embodiment, the controller is specifically configured to control the power supply unit in the power supply mode to exit the power supply mode in response to the load rates of the at least one battery supply unit being less than the set load rate; and controlling the power supply unit in the standby mode and/or the sleep mode to enter a power supply mode in response to the load rates of the at least one battery supply unit being greater than the set load rate.

In one embodiment, the controller is configured to collect an output voltage of the power supply unit in the power supply mode, and control the power supply unit in the standby mode to enter the power supply mode in response to the output voltage of the power supply unit in the power supply mode being not greater than the output voltage of the power supply unit in the standby mode.

In a third aspect, an embodiment of the present application provides a server, including: the power supply device comprises a plurality of components and a plurality of power supply modules, wherein the power supply modules comprise controllers, and the controllers are used for controlling the power supply modules to supply electric energy for the components; the power supply modules comprise a host, wherein the host is a power supply module for controlling other power supply modules to work, and a controller of the host controls the controllers of the other power supply modules; the host is used for controlling the battery supply units to be in one of a power supply mode, a standby mode and a sleep mode respectively based on the load rates of the battery supply units; the load rate is the ratio between the power supply power of the power supply module and the rated power of the power supply module when the power supply module supplies power; the power supply mode is a mode that the power supply module supplies power to the components; the standby mode is a mode in which the output voltage of the power supply module is smaller than the rated voltage of the components and does not supply power to the components; the sleep mode is a mode in which the output voltage of the power supply module is 0 and the power is not supplied to the plurality of components.

In one embodiment, the power supply modules are provided with priority information, each power supply module of the power supply modules is configured to receive priority information of other power supply modules except for the power supply module, and a power supply module corresponding to highest priority information or lowest priority information in the priority information of the power supply modules is set as the host.

In one embodiment, the host is specifically configured to receive an average load rate of the plurality of power supply modules, and control the power supply modules in the power supply mode to exit the power supply mode in response to the average load rates of the plurality of power supply modules being less than a set load rate; and responding to the average load rates of the power supply modules being larger than the set load rate, and controlling the power supply module in the standby mode and/or the sleep mode to enter a power supply mode.

Drawings

The drawings that accompany the detailed description can be briefly described as follows.

Fig. 1 is a graph of power supply efficiency of PSU versus load factor of PSU;

fig. 2 is a schematic architecture diagram of a power supply system according to an embodiment of the present application;

fig. 3 is a schematic architecture diagram of a power supply system according to an embodiment of the present application;

Fig. 4 is a schematic diagram of an architecture of a PSU according to an embodiment of the present application;

fig. 5 is a graph of the output voltages of a PSU in a power supply mode, a PSU in a standby mode, and a PSU in a sleep mode provided in an embodiment of the present application;

FIG. 6 is a graph of output voltage of a PSU in a power-up mode as a function of power-up load provided in an embodiment of the present application;

fig. 7 is a schematic diagram of the output voltage change of the PSU in the power supply mode, which is left when a part of PSUs in the power supply mode fails, provided in the embodiment of the present application;

fig. 8 is a schematic diagram of output voltage variation of a PSU in a power supply mode, which is left when an abnormality occurs in the output voltage of a part of PSUs in the power supply mode provided in the embodiment of the present application;

fig. 9 is a schematic architecture diagram of a power supply system 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 drawings in the embodiments of the present application.

In the description of the present application, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or an contradictory or integral connection; the specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In the description of the present application, the term "and/or" is an association relationship describing an associated object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. The symbol "/" herein indicates that the associated object is or is a relationship, e.g., A/B indicates A or B.

In the description of the present application, the terms "first" and "second" and the like are used to distinguish between different objects and are not used to describe a particular order of objects. For example, the first response message and the second response message, etc. are used to distinguish between different response messages, and are not used to describe a particular order of response messages.

In the embodiments of the present application, the words "in one embodiment" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "in one embodiment" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "in one embodiment" or "such as" is intended to present related concepts in a concrete fashion.

In the description of the present specification, a particular feature, structure, material, or characteristic may be combined in any suitable manner in one or more embodiments or examples.

The PSU is composed of a controller, a low-voltage distributor, structural components and the like. The controller of the PSU has the functions of collecting the total voltage of the energy storage device, collecting the total current of the energy storage device, controlling the connection or disconnection of a charging circuit of the energy storage device and a discharging circuit of the energy storage device, establishing communication connection with other PSUs or other controllers and the like. In one embodiment, the PSU may also include an energy storage device. The PSU is used as a standby power supply, and can supply power for the electric equipment under the condition that the main power supply is powered off.

When the PSUs supply power to the electric equipment, the power supply power of the PSUs is balanced with the rated power of the electric equipment. If one or more PSUs in the PSUs are abnormal in power supply, the power supply power of the rest PSUs is smaller than the rated power of the electric equipment, the electric equipment is down, and therefore stability of the electric equipment is reduced.

In order to improve the stability of the consumer, more than the normal number of PSUs may be provided to power the consumer. In the running process of the electric equipment, the service volume of the electric equipment in a specific time period is larger, and the electric equipment runs in a heavy load state. The traffic of most of the time period of the electric equipment is smaller, and the electric equipment operates in a light load state. PSU power and quantity are configured according to the maximum load condition of electric equipment, and power supply redundancy design is carried out, so that a larger margin is reserved. The load rate of the individual PSU is relatively low. The load factor refers to the ratio between the power supply power when the PSU is supplying power and the rated power of the PSU.

The power supply efficiency of a PSU refers to the ratio of the output active power of the PSU to the input active power of the PSU. As shown in fig. 1, the functional relationship between the power supply efficiency of the PSU and the load factor of the PSU resembles a parabolic shape. In general, when the load factor of the PSU is in light load or heavy load, the power supply efficiency of the PSU is relatively low. When the load rate of the PSU is at or half-load accessory load rate, the power supply efficiency of the PSU is highest. In the running process of the electric equipment, the electric equipment can be switched between heavy load and light load at any time. However, the operation mode of the PSU cannot be freely switched according to the operation state of the electric device, so that the PSU cannot supply power with the highest power supply efficiency.

In order to solve the defect that the existing PSU cannot supply power with higher power supply efficiency, the embodiment of the application provides a power supply system, the PSU and a server.

The power supply system comprises electric equipment and a plurality of PSUs. The PSUs are electrically connected with the electric equipment. The PSU includes a controller. The controller is used for controlling the PSU to provide electric energy for the electric equipment. The plurality of PSUs includes a host. The host is a PSU that controls the operation of other PSUs. The controller of the host controls the controllers of the other PSUs. The host is configured to control the plurality of PSUs to be in one of a power mode, a standby mode, and a sleep mode, respectively, based on a load rate of the plurality of PSUs. The power supply mode refers to a mode in which the PSU supplies power to the electric device. The standby mode refers to a mode in which the output voltage of the PSU is smaller than the rated voltage of the electric equipment and does not supply power to the electric equipment. The sleep mode refers to a mode in which the PSU output voltage is 0 and no power is supplied to the powered device.

In this embodiment, when the plurality of PSUs supply power to the electric device, one PSU is selected as a host from the plurality of PSUs. The host may receive the load rates of the other PSUs, and control the PSUs to enter one of a power mode, a standby mode, and a sleep mode according to the load rates of the PSUs to improve the power supply efficiency of each PSU. In addition, PSU does not need the participation of electric equipment, and intelligent networking, intelligent control and intelligent management among a plurality of PSUs can be realized, so that the whole power supply system can work with high reliability and high efficiency.

The PSU protected by the embodiment of the application comprises: and a controller. And a controller coupled to the controller of the at least one PSU for controlling the at least one PSU to be in one of a power mode, a standby mode and a sleep mode, respectively, based on a load rate of the at least one PSU.

In this embodiment, the PSU may receive the load rates of the other PSUs, and control the PSU itself and the other PSUs to enter one of a power supply mode, a standby mode and a sleep mode according to the load rates of the PSUs itself and the load rates of the other PSUs, so as to improve the power supply efficiency of each PSU. In addition, the PSU does not need electric equipment to participate, intelligent networking, intelligent control and intelligent management between the PSU and other PSUs can be realized, and the whole power supply system can work with high reliability and high efficiency.

Fig. 2 is a schematic architecture diagram of a power supply system according to an embodiment of the present application. As shown in fig. 2, the power supply system 10 includes a powered device 100, N PSUs 200, a communication bus 300, a current sharing bus 400, and a busbar bus 500.N is a positive integer greater than 1. Powered device 100 and N PSUs 200 establish a communication connection through communication bus 300. The N PSUs 200 establish communication connections with each other via a communication bus 300. The N PSUs 200 are coupled to each other by a current share bus 400. The outputs of the N PSUs 200 are coupled to the busbar bus 500, respectively. In one embodiment, the output voltage of PSU200 ranges from 46V to 56V.

Powered device 100 may be an outdoor cabinet, a communication base station, a server, a new energy automobile, or other device requiring electrical energy. After receiving the power output by PSU200, powered device 100 may operate.

Communication bus 300 may be used to enable powered device 100 to establish a communication connection with PSU200, so as to implement data transmission between powered device 100 and PSU 200. In this application, PSU200 may establish a communication connection with powered device 100 through communication bus 300, send communication information to powered device 100, or receive communication information of powered device 100. Data transmission can be performed between PSU200 and powered device 100, so that powered device 100 can control PSU200 to work, and powered device 100 and PSU200 work cooperatively.

The communication bus 300 may be coupled to a plurality of PSUs 200, respectively, to enable communication connections to be established between the plurality of PSUs 200. Any one PSU200 of the plurality of PSUs 200 may establish a communication connection with other PSUs 200 via the communication bus 300, send communication information to other PSUs 200, or receive communication information of other PSUs 200. The data transmission between the PSU200 and other PSUs 200 may control the other PSUs 200 to operate and may cooperate with the other PSUs 200.

In this application, the communication bus 300 may be a wired interface such as gold wire, pins, a printed circuit board (printed circuit board, PCB) or other type of wired interface. The communication bus 300 may be a wireless interface such as a bluetooth module, a near field communication (near field communication, NFC) module, or other wireless communication module. In other embodiments, the communication bus 300 may be a controller area network (controller area network, CAN), a serial peripheral interface (serial peripheral interface, SPI), a universal asynchronous receiver transmitter (universal asynchronous receiver/transmitter, UART), or the like.

The current sharing bus 400 may be coupled to the PSUs 200, respectively, to enable analog signal transmission between the PSUs 200. In this application, the PSU200 may turn on the load factor reporting enabling function, detect its own load factor, and convert the load factor into an analog voltage signal, and transmit the analog voltage signal to the current-sharing bus 400. The current sharing bus 400 receives the load rates of the PSUs 200, calculates the average load rate of the PSUs 200 according to the load rates of the PSUs 200, and sends the average load rate to each PSU200 in the form of analog signals, so that each PSU200 can receive the load rates of other PSUs 200.

In one embodiment, as shown in fig. 3, a plurality of PSUs 200 are each electrically connected to a current share bus 400. The PSU200 respectively turns on the load factor reporting enabling function and uploads the analog voltage signal to the current share bus 400. The current equalizing bus 400 calculates an average voltage Δv= (v1+v2+ … +vn)/N from the analog voltage signal of each PSU 200. The PSU200 is internally provided with a current-sharing sampling circuit, which is used for collecting analog average voltage signals of the current-sharing bus 400, calculating the load rates of all PSUs 200 according to the average voltage, and realizing the load rates of other PSUs 200.

The busbar bus 500 may be electrically connected to the output ports of the PSUs 200, respectively, such that the PSUs 200 are connected in parallel to the busbar bus 500. In one embodiment, PSU200 may be a battery. When the energy storage devices of the plurality of PSUs 200 are discharged, power may be provided to the busbar bus 500. Multiple PSUs 200 may receive power from the busbar 500 to charge the energy storage devices of the PSUs 200.

In one embodiment, the PSU200 is internally provided with sampling circuitry. When PSU200 is electrically connected to busbar bus 500, the sampling circuitry of PSU200 may collect the voltage of busbar bus 500 and perform other functions based on the voltage of busbar bus 500. In other embodiments, bus 500 may be a DC bus or an AC bus. If the busbar bus 500 is a direct current busbar, the PSU200 may input direct current directly to the busbar bus 500. If the busbar bus 500 is an ac busbar, the PSU200 may convert dc power to ac power and input the ac power to the busbar bus 500.

Fig. 4 is a schematic diagram of an architecture of a PSU according to an embodiment of the present application. As shown in fig. 4, PSU 200 includes an energy storage device 210 and a controller 220. The energy storage devices 210 are each coupled to a controller 220. The energy storage device 210 may be any of a variety of existing batteries. The energy storage device 210 may be expanded to an external power system.

The controller 220 of the PSU 200 establishes a communication connection with the communication bus 300, and may send data such as the total voltage of the energy storage device 210, the total current of the energy storage device 210, etc. to the communication bus 300, so as to implement the communication connection between the PSU 200 and the electric equipment 100 and other PSUs 200, and control the electric equipment 100 and other PSUs 200 to work. In this embodiment, the controllers 220 of the PSUs 200 may be connected to each other through the communication bus 300 to implement a hardware communication connection between the PSUs 200 and the powered device 100. The controller 220 of the PSU 200 stores intelligent algorithms and intelligent control logic to implement intelligent networking, intelligent control and intelligent management among the PSUs 200, so that the entire power supply system 10 can operate with high reliability and high efficiency.

In the present application, when a plurality of PSUs 200 supply power to the electric device 100, one PSU is selected as a host from among the PSUs 200 according to a certain logic algorithm, so as to coordinate and manage the operation of the whole control system; the other PSUs 200 are slaves and can accept management of the master. Typically, the PSUs 200 are in equal relationship. Each PSU 200 has the opportunity to become the host. Each PSU 200 has the opportunity to become a slave. The PSUs 200 can compete with each other through the set priority information, and select one PSU 200 as a host. The master is responsible for the control logic and calculation logic of the whole power supply system 10, and monitors, adjusts and manages the working state of the slave.

In one embodiment, the priority information may be an address of a power slot. The powered device 100 is electrically connected to the PSUs 200 through power slots, respectively. When the electric equipment 100 leaves the factory, each power supply slot position can be numbered and used as the address of the power supply slot position. When multiple PSUs 200 are coupled to the power slots of powered device 100, PSUs 200 may read the addresses of the power slots. Each PSU 200 sends its own power slot address to the other PSUs 200 via the communication bus 300, respectively, allowing each PSU 200 to have the power slot addresses of the other PSUs 200 cached.

The PSUs 200 may be ordered by the size of the addresses of the power slots, with the largest power slot address being defined as the highest priority information and the smallest power slot address being defined as the smallest priority information. Alternatively, the PSUs 200 may be ordered by the size of the addresses of the power slots, with the address of the smallest power slot being defined as the highest priority information and the address of the largest power slot being defined as the smallest priority information. The plurality of PSUs 200 may select the PSU 200 corresponding to the address of the highest priority power slot as the master and the other PSUs 200 as slaves.

In one embodiment, the priority information may be an electronic tag serial number. When the PSU200 leaves the factory, the electronic tag serial number can be written in the memory of the PSU200 in advance. When the PSUs 200 are electrically connected with the electric equipment 100, each PSU200 sends its own electronic tag serial number to the other PSUs 200 through the communication bus 300, so that each PSU200 caches the electronic tag serial numbers of the other PSUs 200.

The PSUs 200 may be ordered according to the size of the electronic tag serial number, with the largest electronic tag serial number being defined as the highest priority information and the smallest electronic tag serial number being defined as the smallest priority information. Alternatively, the PSUs 200 may be ordered by size of the electronic tag serial number, with the smallest electronic tag serial number being defined as the highest priority information and the largest electronic tag serial number being defined as the smallest priority information. The plurality of PSUs 200 may select the PSU200 corresponding to the highest priority electronic tag serial number as the master and the other PSUs 200 as slaves.

In this application, when a plurality of PSUs 200 supply power to the powered device 100, the controller 220 of each PSU200 may calculate its own load factor. Each slave transmits its own load rate to the master over the communication bus 300. The host calculates the number of PSUs 200 to be turned off or on according to the load rate of the host and the load rate of the slave, and makes part of PSUs 200 be in standby mode or sleep mode.

Normally, a part of PSUs 200 of the plurality of PSUs 200 is in a power supply mode, a part of PSUs 200 of the plurality of PSUs 200 is in a standby mode, and a part of PSUs 200 of the plurality of PSUs 200 may be in a sleep mode. The power supply mode refers to a mode in which PSU 200 normally supplies power to powered device 100. The standby mode refers to a mode in which the output voltage of PSU 200 is lower than the rated voltage of powered device 100 and does not power powered device 100. Sleep mode refers to a mode in which the output voltage of PSU 200 is zero or near 0 and PSU 200 is not powering powered device 100.

As shown in fig. 5, when PSU 200 is in the power mode, the output voltage V1 of PSU 200 is generally the rated voltage Vout of PSU 200. When PSU 200 is in standby mode, the output voltage V2 of PSU 200 is less than the rated voltage Vout of PSU 200. At this time, when the plurality of PSUs 200 supply power to the power consumption device 100, if the output voltage V2 of some PSUs 200 is smaller than the rated voltage Vout of the PSUs 200, the PSUs 200 cannot supply power to the power consumption device 100. When PSU 200 is in sleep mode, the output voltage V3 of PSU 200 is zero or near zero. At this time, the PSU 200 corresponds to the off state, and the power consumption of the PSU 200 can be reduced.

In one embodiment, after a plurality of PSUs 200 bid for one PSU 200 as a master, the master may prioritize all slaves according to the address of the power slot or the electronic tag serial number. The host is typically in a power mode. The host computer can select a part of the slaves with high priority to enter a power supply mode according to the ordered priority of the slaves, select a part of the slaves with next level of priority to enter a standby mode, and select a part of the slaves with low priority to enter a sleep mode.

The host computer can confirm the order of the priority according to the address or electronic label serial number of the power slot position and can be unfixed, the host computer can adjust the address or electronic label serial number of the power slot position of dynamic priority information. The host computer can dynamically switch modes by changing the address of the power slot or the priority information of the serial number of the electronic tag, so that the problems that the service lives of the energy storage devices of the PSUs 200 are unbalanced and the like caused by that the host computer and part of the slaves always work in a power supply mode or a standby mode and the other slaves work in a sleep mode are avoided.

In one embodiment, the host may redefine the priorities of the host and the slave according to parameters such as the health degree and the charging rate of the PSU 200, so that the PSU 200 with a relatively large health degree value or a large life cycle balance is set to a high priority, and the PSU 200 with a relatively small health degree value or a small life cycle balance is set to a low priority. The host may control the portion of PSU 200 with the greatest health value, or the greatest life cycle balance, to be in a powered mode. The host may control the portion of PSU 200 having a greater health value or a greater life cycle balance to be in standby mode. The host may control the portion of PSU 200 that minimizes the health value, or the life cycle balance, to be in sleep mode.

In one embodiment, the host may reorder the priorities of the individual PSUs 200. At intervals, the host defines the address of the power slot corresponding to the highest priority or the serial number of the electronic tag as the lowest priority. Or, at intervals, the host defines the address of the power slot corresponding to the lowest priority or the serial number of the electronic tag as the highest priority. The host changes the priority order of the PSUs 200 every a period of time, so that the PSUs 200 can be switched among the power supply mode, the standby mode and the sleep mode, and the problems of unbalanced service lives of the energy storage devices of the PSUs 200 can be avoided.

In the application, the host machine utilizes a circulation relative ordering rule to order the addresses of the power supply slots of the host machine and the slave machine or the serial numbers of the electronic tags according to the relative size order, and the largest serial number is followed by the smallest serial number. The value of the overall sequence number is changed at intervals, and the cycle is repeated. In one embodiment, the highest priority when power is supplied to the PSUs 200 is the sum of the minimum value of the address of the power slot or the electronic tag serial number and the counter count. Each time the PSU 200 is powered on, the sequence number stored in the register is initialized. The PSU 200 is powered for more than a certain period of time and the counter counts up by 1. The maximum value accumulated by the counter is the total number of PSUs 200 minus 1. And when the accumulated numerical value of the counter reaches the maximum value, zero clearing is carried out.

In the embodiment of the present application, a communication connection may be established between the PSUs 200 through the communication bus 300. Multiple PSUs 200 may be automatically networked to establish a collaborative group. According to the allocation mechanism of the power supply mode, the standby mode and the sleep mode, the PSUs 200 can be respectively allocated into the power supply mode, the standby mode and the sleep mode, so that the PSUs 200 can realize intelligent optimizing of system level efficiency.

The controller 220 of the PSU 200 is coupled to the current share bus 400, and can send an analog signal carrying its own load factor to the current share bus 400, and receive an analog signal carrying the average load factor of all PSUs 200 sent by the current share bus 400. In one embodiment, PSU 200 in power mode may receive the average load rate of all PSUs 200 over current share bus 400. When the PSU 200 in the power supply mode determines that the average load rate of all PSUs 200 is less than the half-load rate or the half-load accessory load rate, the PSU 200 in the power supply mode with low priority exits the power supply mode and switches to the standby mode or the sleep mode to achieve an increase in the load rate of the remaining PSUs 200 in the power supply mode.

In one embodiment, PSUs 200 in a standby mode or sleep mode may receive an average load rate of all PSUs 200 over the current share bus 400. When the PSU 200 in the standby mode or the sleep mode determines that the average load rate of all PSUs 200 of the PSU 200 in the power supply mode is greater than the half-load rate or the half-load accessory load rate, the PSU 200 in the standby mode with a high priority exits the standby mode and switches to the power supply mode to achieve a reduction in the load rate of the PSU 200 in the power supply mode. The PSU 200 in the sleep mode with a high priority exits the sleep mode and switches to the power mode or standby mode to achieve a reduced load factor of the PSU 200 in the power mode.

In the embodiment of the present application, the PSU200 may receive the load rates of other PSUs 200 through the current sharing bus 400, and may actively switch modes. For example, when the load rate of the PSU200 in the power mode is greater than the half-load rate or the half-load accessory load rate, the partial PSU200 in the standby mode or the sleep mode may be quickly switched to the power mode. Compared with the mode switching mode of the PSU200 through the communication bus 300, the mode switching mode of the PSU200 through the current sharing bus 400 is faster, so that the voltage of the power supplied by the PSUs 200 to the power utilization equipment 100 is more stable.

The controller 220 of the PSU200 is electrically connected to the busbar bus 500, and the PSU200 transmits the output electric energy to the busbar bus 500 to supply power to the electric device 100. In this application, the output voltage of PSU200 in the power supply mode is the rated voltage of powered device 100. PSU200 in standby mode is less than the rated voltage of powered device 100, but is not capable of providing power to powered device 100.

The controller 220 of the PSU200 includes a sampling circuit. The sampling circuit of the controller 220 collects the voltage of the busbar bus 500. In one embodiment, when the load of powered device 100 suddenly increases, or a portion of PSU200 in a power mode suddenly fails, the power capability of PSU200 in the power mode is insufficient, resulting in a voltage drop across bus 500. If PSU200 in standby mode does not respond in time, powered device 100 may be at risk of downtime. Therefore, when PSU200 in the standby mode or the sleep mode detects that the voltage of bus 500 is less than the rated voltage of electric device 100, PSU200 determines that electric device 100 is in heavy load, and can quickly and indirectly determine the risk of abnormal working conditions. The PSU200 with the higher priority in the standby mode exits the standby mode and switches to the power supply mode, so that more PSUs 200 supply power to the electric device 100, so as to increase the voltage of the bus bar bus 500. The PSU200 with the higher priority in sleep mode exits the sleep mode and switches to a power mode or standby mode to achieve an increase in the voltage of the bus bar bus 500.

In this embodiment, PSU 200 may supply power to powered device 100 via bus 500 and detect the voltage of bus 500. When the PSU 200 in the standby mode or the sleep mode detects that the voltage of the bus bar 500 is smaller than the rated voltage of the electric equipment 100, the PSU 200 in the standby mode or the sleep mode actively switches modes, so that voltage drop of the bus bar 500 is avoided, and the electric equipment 100 is prevented from being down. Compared with the mode switching mode of PSU 200 through communication bus 300 and current sharing bus 400, the mode switching mode of PSU 200 through detecting the voltage of busbar bus 500 is faster, so that the voltage of power supplied by multiple PSUs 200 to powered device 100 is more stable.

In this application, when the electric device 100 is in light operation, the number of PSUs 200 supplying power to the electric device 100 is relatively small, and other PSUs 200 operate in a standby mode or a sleep mode. When the traffic of the powered device 100 suddenly increases, the power demand of the powered device 100 increases rapidly. That is, powered device 100 suddenly switches between heavy and light loads. At this time, the powered device 100 needs to wake up the PSU 200 in the standby mode or the sleep mode quickly, so that the PSU 200 in the standby mode or the sleep mode provides the power for the powered device 100. If the PSU 200 in the standby mode or sleep mode cannot wake up quickly, the voltage on the bus bar bus 500 drops. When the voltage of the busbar bus 500 is lower than the lowest power supply voltage of the electric equipment 100, the electric equipment 100 may be shut down due to the excessively low voltage, so that the stability of the electric equipment 100 is reduced.

In general, when the powered device 100 is suddenly switched from a light load to a heavy load, the output current output by the PSU200 in the power supply mode may exceed the overcurrent protection point of the PSU200 in a short time. The inside of the PSU200 may trigger an over-current protection (over current protection, OCP) mechanism, letting the PSU200 shut down. After one or more PSUs 200 are turned off by triggering the OCP mechanism, the number of PSUs 200 remaining in the power mode is reduced. The rest of PSU200 in power mode is loaded and triggers OCP mechanism to turn off, so that all PSUs 200 in power mode trigger OCP mechanism to turn off, resulting in power down of powered device 100.

In this embodiment, when the plurality of PSUs 200 supply power to the electric device 100, the host may limit the number of PSUs 200 in the standby mode and the number of PSUs 200 in the sleep mode. The host may put more PSUs 200 in power mode such that the load rate of PSUs 200 in power mode is at half-load or half-load accessory load rate. If one or a few PSUs 200 in the power supply mode stop supplying power, the load rate of other PSUs 200 in the power supply mode fluctuates around the half-load rate, so that the load rate of other PSUs 200 in the power supply mode can be prevented from being too large, and the power supply efficiency of other PSUs 200 in the power supply mode can be reduced. In addition, after the load rate of the PSU200 in the power supply mode is at the half-load rate or the half-load accessory load rate and the electric equipment 100 is suddenly switched from the light load to the heavy load, the output voltage of the PSU200 in the power supply mode can be kept at the rated voltage of the electric equipment 100, so that the problem of low-voltage power failure of the electric equipment 100 can be avoided.

The embodiment of the application protects a server, which comprises: a plurality of components and a plurality of power supply modules. The power supply module comprises a controller. The controller is used for controlling the power supply module to supply electric energy for a plurality of components. The power supply modules comprise a host. The host is a power supply module for controlling other power supply modules to work. The controller of the host controls the controllers of other power supply modules. The host is used for controlling the power supply modules to be in one of a power supply mode, a standby mode and a sleep mode respectively based on the load rates of the power supply modules. The components may be power consumption devices such as chips, processors, resistors, capacitors, integrated circuits, etc. The power supply module can be a component for providing electric energy for a battery, an uninterruptible power supply and the like.

In one embodiment, powered device 100 may be a supercomputer server. The maximum power of the supercomputing server may be p_total=36 Kw. The PSUs 200 of the power supply system 10 are divided into two groups, and an a/B two-way power supply architecture with n+n backups is adopted. The PSU 200 has a power rating of 3Kw. The highest power point of PSU 200 is half-load p_fine. The total number n= (P/P) ×2=24 of PSUs 200 of the power supply system 100. P is the power rating of the powered device 100 and P is the power rating of the individual PSU 200. For example, the total power p_act=2.8 Kw of powered device 100 for a certain period of time. The number of PSUs 200 that powered device 100 needs to be in power mode is n_normal=p_act/p_fine=further rounded (1.867) =2. The number of PSUs 200 that powered device 100 needs to be in standby mode is n_backup=p_ttotal/p_single=further rounded (12) =10. The number of PSUs 200 that powered device 100 needs to be in sleep mode is n_sleep=n_total-n_normal-n_backup=12.

In this embodiment, when the host control portion PSU200 is in the standby mode, the output voltage of the PSU200 in the standby mode is smaller than the rated voltage of the electric device 100 and is larger than the lower limit voltage of the normal working voltage range of the electric device 100. The output port of PSU200 in standby mode is electrically connected to bus bar bus 500 and inputs power to bus bar bus 500. In a scenario where multiple PSUs 200 are powered, if the output voltages of PSUs 200 are different, PSUs 200 outputting large voltages supply power to powered device 100, and PSUs 200 outputting small voltages cannot supply power to powered device 100. Therefore, when the output voltage of the PSU200 in the standby mode is smaller than the rated voltage of the powered device 100, the PSU200 in the power supply mode supplies power to the powered device 100, and the PSU200 in the standby mode cannot supply power to the powered device 100.

When the powered device 100 is converted from light load to heavy load, the output power of the PSU200 in the power supply mode may be smaller than the working power of the powered device 100, which may cause the voltage of the bus 500 to continuously drop. When the voltage drop of the output busbar 500 is low to the output voltage of the PSU200 in the standby mode, the PSU200 in the standby mode can supply power to the electric device 100, so as to avoid the voltage of the busbar bus 500 from continuously dropping. At this time, the PSU200 in the power supply mode and a part of PSU200 in the standby mode supply power to the electric equipment 100 together, so that the problem of low voltage power failure of the electric equipment 100 can be avoided.

In one embodiment, the output voltage of PSU200 in standby mode is less than the rated voltage of powered device 100. The output voltage of PSU200 in standby mode is greater than the lower voltage limit of the normal operating voltage range of powered device 100. In other embodiments, the output voltage of PSU200 in standby mode is 0.2V-0.3V less than the rated voltage of powered device 100.

In one embodiment, the output voltages of the PSUs 200 in standby mode are not the same. In the process that the voltage of the busbar bus 500 continuously drops, the PSUs 200 in the standby mode supply power to the electric equipment 100 one by one, so that the situation that all PSUs 200 in the standby mode supply power to the electric equipment 100 simultaneously to cause excessive PSUs 200 can be prevented, the load rate of each PSU200 is too low, the efficiency is low, and the power waste is caused.

In this embodiment of the present application, the controller 220 of the PSU200 in the standby mode may automatically switch the higher loop gain to increase the response speed of the standby loop of the PSU200, thereby improving the load receiving capability. When PSU200 in the standby mode supplies power to powered device 100, PSU200 switches from the standby mode to the power mode. The PSU200 may trigger an automatic switch to normal loop parameters after the mode switch is completed to improve the stability of the power supply system 10. PSU200 calculates a boosted voltage of PSU200, rapidly boosting the output voltage to the rated voltage of powered device 100, and increasing the response speed of the standby loop of PSU200 in the standby mode.

When the voltage of the bus 500 drops to the output voltage of the PSU200 in the standby mode during the continuous drop process, the PSU200 in the standby mode rapidly supplies power to the electric equipment 100, so that the problem that the electric equipment 100 is powered off at low voltage due to further drop of the voltage of the bus 500 can be avoided.

In this embodiment, the PSUs 200 are respectively coupled to the current-sharing bus 400, so that the PSUs 200 can upload their own load rates to the current-sharing bus 400 in real time through the hardware analog circuit, and receive analog signals representing the average load rates of all PSUs 200 in the power supply mode in real time. When the powered device 100 is switched from heavy load to light load, the number of PSUs 200 being powered is relatively large, resulting in a relatively low load rate of PSUs 200 in the powered mode. The PSU200 may receive the load rates of other PSUs 200 through the current sharing bus 400, calculate the number of PSUs 200 that need to exit the power mode according to the load rates of itself and the load rates of other PSUs 200, and let itself or other PSUs 200 exit the power mode.

In one embodiment, after the host calculates the number of PSUs 200 that need to exit the power supply mode, a control command may be sent to a set number of slaves through the communication bus 300, so that the slaves that receive the control command exit the power supply mode and switch to the standby mode or the sleep mode. In other embodiments, the slave that receives the control instruction may be a lower priority PSU 200. The slave that receives the control instruction may be the PSU200 that is converted from the standby mode to the power supply mode.

In this embodiment, during the process of supplying power to the electric device 100 by the PSU 200, when the output load of the PSU 200 is less than full load, the output voltage of the PSU 200 is kept unchanged. When the output load of the PSU 200 is greater than full load, the output voltage of the PSU 200 drops continuously as the output current increases. If the output load of PSU 200 continues to increase, the output voltage of PSU 200 quickly sags below the output voltage of PSU 200 in standby mode before the OCP mechanism is triggered, causing PSU 200 in standby mode to power powered device 100. The PSU 200 that is powering may transfer a partial load to the PSU 200 in the standby mode, and may avoid the problem that the PSU 200 triggers the OCP function, resulting in a low voltage power outage of the powered device 100.

In one embodiment, as shown in fig. 6, V1 is the output voltage of PSU 200 in power-on mode. V2 is the output voltage of PSU 200 in standby mode. When the output load current is within the rated current range of the PSU 200, the output voltage of the PSU 200 in the power supply mode may remain unchanged while the output load of the PSU 200 in the power supply mode is continuously increased. When the output load of the PSU 200 in the power supply mode exceeds full load, the output voltage of the PSU 200 in the power supply mode continuously drops. When the output voltage of PSU 200 in the power supply mode drops to the output voltage V2 of PSU 200 in the standby mode, PSU 200 in the standby mode supplies power to powered device 100. The PSU 200 in the power supply mode may transfer a partial load to the PSU 200 in the standby mode, avoiding that the output voltage of the PSU 200 continues to drop. If the output voltage of PSU 200 drops continuously, the output current of PSU 200 increases continuously, PSU 200 triggers the OCP mechanism, resulting in a problem of low voltage power outage of powered device 100.

In this embodiment of the present application, when the PSU 200 in the power supply mode fails, the output voltage decreases, and the temperature is too high, the PSU 200 in the power supply mode may control the output voltage to slowly decrease, so that a part of load may be slowly transferred to the PSU 200 in the standby mode, and the problem that the low voltage power failure occurs in the electric equipment 100 after the PSU 200 in the power supply mode is slowly powered off under the conditions of sudden power off, triggering an overstable protection (over temperature protection, OTP) mechanism, and the like may be avoided.

In one embodiment, as shown in fig. 7, V1 is the output voltage of PSU 200 in power-on mode. V2 is the output voltage of PSU 200 in standby mode. When a slow fault such as power failure, output voltage reduction, excessive temperature occurs in the PSU 200 in the power supply mode, the output voltage of the failed PSU 200 slowly drops below the output voltage of the PSU 200 in the standby mode, and then the power is shut down by sealing. When the output voltage of the failed PSU 200 drops, the power supply load of the failed PSU 200 is slowly transferred to other PSUs 200 in the power supply mode, thereby avoiding the risk of voltage drops caused by the power supply load of the failed PSU 200 being quickly transferred to the load.

If the PSU200 in the power supply mode is one and the output voltage drops to the output voltage of the PSU200 in the standby mode, the power supply load of the failed PSU200 is slowly transferred to the other PSUs 200 in the standby mode, and the PSU200 in the standby mode supplies power to the power consumer 100.

In this embodiment, when the PSU200 in the power supply mode fails, the output voltage of the PSU200 in the power supply mode may be greater than the rated voltage of the powered device 100. That is, the voltage of busbar bus 500 is greater than the rated voltage of powered device 100. The output voltage of PSU200 is greater than the rated voltage of powered device 100, which triggers an overvoltage protection (over voltage protection, OVP) mechanism to protect powered device 100 from damage.

In this application, PSU200 in standby mode may detect the voltage of bus bar bus 500. When PSU200 in standby mode detects that the voltage of busbar bus 500 is greater than the set threshold of the rated voltage of powered device 100, PSU200 in standby mode may quickly raise the output voltage to improve the load-carrying capacity of power supply system 10. When the failed PSU200 triggers the OVP mechanism, the failed PSU200 shuts down. The PSU200 in the standby mode directly receives the power supply load of the failed PSU200, so that the problem that the power consumption equipment 100 is powered off at low voltage after the failed PSU200 is powered off is avoided.

In one embodiment, as shown in fig. 8, V1 is the output voltage of PSU 200 in power-on mode. V2 is the output voltage of PSU 200 in standby mode. The output voltage of the failed PSU 200 is continuously increasing and will trigger an overvoltage protection (over voltage protection, OVP) mechanism. The PSU 200 in standby mode may detect the voltage of the busbar bus 500, pre-empting in advance whether the PSU 200 in power mode is malfunctioning. When PSU 200 in standby mode detects that the voltage of bus 500 is greater than the rated voltage of powered device 100, the output voltage is slowly raised and reaches the rated voltage of powered device 100. Before the failed PSU 200 triggers the OVP mechanism to suddenly shut down, the PSU 200 in the standby mode switches to the power supply mode to supply power to the electric equipment 100.

After power is supplied to the powered device 100 by the PSU 200 in the standby mode, the output voltage is slowly reduced to the original output voltage. If an existing PSU 200 in the power supply mode can supply power to the powered device 100, the PSU 200 in the standby mode switches to the standby mode again. If the existing PSU 200 in the power mode is unable to power the powered device 100, the bus 500 continuously falls. When the busbar bus 500 drops again to the output voltage of the PSU 200 in standby mode, the PSU 200 in standby mode supplies power again to the powered device 100.

The implementation process of the technical scheme of the application is described below by a specific example.

When powered device 100 may be a converged server system, the maximum total power demand of the converged server system is p_total=36 kW. The PSUs 200 of the power supply system 10 are divided into two groups, and an a/B two-way power supply architecture with n+n backups is adopted. The PSU200 has a power rating of 3Kw. The highest power point of PSU200 is half-load p_fine. Total number n_total= (psTotal power/P single supply power) ×2=24 (pieces) of PSUs 200 of power supply system 100. The output voltage of PSU200 ranges from 46V to 56V. Typical value v_normal=53.5v. The service of the fusion server system is less at night, and the load rate is less than 10%. The converged server system has heavier business in daytime and the load rate is about 40%. The fusion server system occasionally has the working condition of light load sudden-loading business to full load.

Intelligent joint debugging can be performed among a plurality of PSUs 200 of the power supply system 10, and the quantity of PSUs 200 in a power supply mode, a standby mode and a sleep mode of the power supply system 10 can be dynamically adjusted in real time. When the electric equipment 100 is in a light load state, a part of PSU200 enters a sleep mode, so that the PSU200 stops outputting, and the loss is reduced to the greatest extent. A portion of PSU200 enters standby mode to allow PSU200 to properly reduce the output voltage without powering powered device 100. The PSU200 in standby mode is in burst mode with less loss. The remaining PSUs 200 are in a power mode, allowing the load factor of the PSU200 to be increased to around the optimum efficiency point. That is, the load factor of PSU200 is at half load factor or half load accessory load factor.

Without participation of powered device 100 of power supply system 10, communication connection is established between the plurality of PSUs 200 via communication bus 300. Multiple PSUs 200 may be automatically networked to establish a collaborative group. According to the allocation mechanism of the power supply mode, the standby mode and the sleep mode, the host can allocate the PSUs 200 into the power supply mode, the standby mode and the sleep mode respectively, so that the PSUs 200 can realize intelligent optimizing of system level efficiency. The key implementation process is as follows:

communication connection is established between the PSUs 200 via a communication bus 300, which communication bus 300 may be a CAN. The PSUs 200 are coupled to each other by a current sharing bus 400. The output ports of the PSUs 200 are electrically connected to the busbar bus 500, respectively.

When the power supply system 10 is powered on, the power supply system 10 is restarted, a new PSU 200 is connected to the electric equipment 100, a part of PSUs 200 fails, the PSUs 200 are pulled out from the electric equipment 100, and the like, the PSUs 200 are re-networked to perform host and slave election, and host election is realized. In one embodiment, as shown in fig. 9, powered device 100 acts as a host computer. The upper computer has a fixed address of 0xFF. The host computer does not participate in competing hosts. Communication bus 500 also has addresses of bits 1-24. The address 1 of the power slot is the minimum address and is used as the host. The other power supply slots are slaves.

The slaves perform a prioritization. The 23 slaves are ordered according to the size of the addresses of the power slots and determine the priority. The smaller the address of the power slot, the greater the priority. The larger the address of the power slot, the smaller the priority. When the power supply system 10 starts supplying power, the counter X value inside the PSU 200 is initialized to 0. On day 1 of operation of the power supply system 10, the counter x=0. The address of the power supply slot number 2 is the smallest and the priority is the highest. The address of the No. 24 power slot is the largest and the priority is the lowest. On day 2 of operation of the power supply system 10, the counter x=1. The address priority of the power slot number 3 is highest. The address priority of the power slot number 2 is lowest. On day 3 of operation of the power supply system 10, the counter x=2. The address priority of the power supply slot number 4 is highest; the address priority of power slot number 3 is lowest. A reordering action is triggered every certain time period (e.g. 24 hours) to allow the master to determine which slaves enter the priorities of the corresponding modes, such as power mode, standby mode and sleep mode.

The host computer is responsible for optimizing calculation, judging and controlling the working modes of other slaves. The host machine sequentially reads the load sizes of the slaves according to the priority order of the slaves, and calculates the total load size. For example, the fusion server system has a total power p_act=2.8 kW for a certain period of time. The host calculates the number of PSUs 200 that need to be in power mode as n_normal=rounding in (p_act/p_fine) =rounding in (1.867) =2 (one). The number of PSUs 200 that the host computer needs to be in standby mode is n_backup=p_total/p_psu-n_normal=10 (number). The host calculates the number of PSUs 200 that need to be in sleep mode as n_sleep=n_total-n_normal-n_backup=12 (number).

And the host orders according to the priority, and distributes each slave to enter a corresponding mode. The host and the address bit number 2 slave enter a power supply mode. The slave machine with address bits 3-12 enters the standby mode. The slave machine with address numbers 13-24 enters the sleep mode. The host computer issues corresponding commands to each slave computer. And after receiving the respective commands, the slave machine automatically adjusts the power supply mode of the slave machine.

For example, the actual power p_act=2.8 kW of powered device 100. The output voltage of 10 PSUs 200 in standby mode is reduced by 0.5V, i.e., the output voltage v_backup=53v of PSUs 200 in standby mode. The 12 PSUs 200 are in sleep mode. The 2 PSUs 200 are in power mode. If the traffic of powered device 100 suddenly increases to a maximum, the power demand of powered device 100 increases rapidly to full load. At this time, the speed of the host or the electric equipment 100 when awakening in the standby mode or the sleep mode is relatively slow, generally about several milliseconds, so that the electric equipment 100 is powered off at a low voltage, and in order to solve the problem that the bus 500 falls down due to sudden aggravation of the service of the electric equipment 100, the specific implementation scheme is as follows:

in one embodiment, the host ensures that powered device 100 is operating at maximum power. The power supply capacity of PSU200 in the power supply mode is greater than the demand of maximum load of powered device 100. The consumer 100 requires 12 PSUs 200 to power up when suddenly loaded. Wherein 2 PSUs 200 are in power mode. 10 PSUs 200 are in standby mode. The output voltage of PSU200 in standby mode is slightly less than the output voltage of PSU200 in power mode and the output is not turned off. That is, the output voltage v_backup=53v of the PSU200 in the standby mode. The output voltage of PSU200 in standby mode is much greater than 46V, which is the voltage at which powered device 100 is powered off. When the powered device 100 suddenly aggravates, the PSU200 in the power supply mode cannot supply power to the powered device 100, which may cause the voltage of the bus 500 to continuously drop. When the voltage of the busbar bus 500 drops to 53V, the PSU200 in standby mode is automatically loaded.

In one embodiment, to reduce the voltage sag amplitude of the busbar bus 500, the PSU 200 may increase the response speed of the standby loop. When PSU 200 is in standby mode, the loop gain is multiple times that of PSU 200 in power supply mode, and the power factor correction (power factor correction, PFC) voltage Vbus of PSU 200 in standby mode is 20V higher than PSU 200 in standby mode, greatly improving the response speed and load carrying capability of the standby loop of PSU 200. When the PSU 200 in the standby mode detects that the output voltage is instantaneously lower than 52V, the forced modification of the loop calculation result Pi is triggered, the loop PID calculation process is reduced, and the response speed of the standby loop is further improved.

In one embodiment, when the PSU 200 in the standby mode quickly detects that the load factor of the PSU 200 in the power supply mode is greater than 70% through the current sharing bus 400, the PSU 200 in the power supply mode can quickly exit the standby mode and switch to the power supply mode, and the load factor of the PSU 200 in the power supply mode is reduced. When the passive load rate of the PSU 200 in the standby mode exceeds 10%, the PSU can quickly exit the standby mode and switch to the power supply mode. When the PSU 200 in the standby mode enters the power supply mode, the output voltage of the PSU 200 in the standby mode increases to the output voltage of the PSU 200 in the power supply mode, preventing the voltage of the busbar bus 500 from continuing to drop.

When the load factor of the PSU 200 in the power supply mode is too large or the load factor of the PSU 200 in the standby mode is too large, the PSUs 200 do not conform to the power supply load range designed during steady-state normal operation, and the PSU 200 in the standby mode is allowed to enter the power supply mode. The PSU 200 rapidly detects the average load rate of the PSU 200 in the power supply mode and the load rate of the PSU 200 in the standby mode through the current sharing bus 400, and indirectly and rapidly judges the system condition, so that the PSU 200 in the standby mode can rapidly exit the standby mode without relying on a system communication wake-up function with a slower speed, thereby reducing the fluctuation range of output voltage and improving the reliability of the electric equipment 100.

In one embodiment, when powered device 100 suddenly loads to full load, the instantaneous load rate of 2 PSUs 200 in power mode is large. If the load factor of the PSU 200 in the power supply mode is greater than full load, the output voltage of the PSU 200 in the power supply mode is continuously reduced to 52V corresponding to the PSU 200 triggering the OCP mechanism. When the output voltage of the PSU 200 in the power supply mode drops to 53V of the output voltage of the PSU 200 in the standby mode, the PSU 200 in the standby mode is automatically loaded, so that the PSU 200 in the power supply mode is ensured to quickly transfer partial load to the PSU 200 in the standby mode before triggering the OCP mechanism, and low-voltage power failure of electric equipment caused by triggering the OCP mechanism by the PSU 200 in the power supply mode is avoided.

In abnormal situations such as power failure, instant frying, triggering the turn-off of the OTP mechanism, triggering the turn-off of the OVP mechanism, and the like of the PSU200 in the power supply mode, the PSU200 can report alarm information. The host receives the alarm information reported by each slave, determines the fault PSU200, eliminates the fault PSU200, and then wakes up other PSUs 200 sequentially according to the priority to enter corresponding modes.

For example, the actual power p_act=2.8 kW of powered device 100. The output voltage of 10 PSUs 200 in standby mode is reduced by 0.5V, i.e. the output voltage v_backup=53v of PSUs 200 in standby mode. The 12 PSUs 200 are in sleep mode. The 2 PSUs 200 are in power mode. If the PSU200 in the power supply mode fails, the host determines the failed PSU200 according to the alarm information reported by each slave. The host rejects the failed PSU200 from the power source resource pool and wakes up the other PSUs 200 in a priority order. At this time, the speed of the host or the electric equipment 100 waking up in the standby mode or the sleep mode is relatively slow, generally about several milliseconds, so that the electric equipment 100 is powered off at a low voltage, and in order to solve the problem that the bus 500 falls down due to the failure of the PSU200 in the power supply mode, the specific implementation scheme is as follows:

In one embodiment, the host ensures that powered device 100 is operating at maximum power. The power supply capacity of PSU 200 in the power supply mode is greater than the demand of maximum load of powered device 100. The 2 PSUs 200 are in power mode. 10 PSUs 200 are in standby mode. The output voltage of PSU 200 in standby mode is slightly less than the output voltage of PSU 200 in power mode and the output is not turned off. That is, the output voltage v_backup=53v of the PSU 200 in the standby mode. The output voltage of PSU 200 in standby mode is much greater than 46V, which is the voltage at which powered device 100 is powered off.

When 1 PSU 200 out of 2 PSUs 200 in the power mode fails, the failed PSU 200 is rejected and the remaining PSUs 200 are momentarily weighted. The failure of PSU 200 in the power mode to power powered device 100 may result in a constant drop in the voltage of bus 500. When the voltage of the busbar bus 500 drops to 53V, the PSU 200 in standby mode is automatically loaded.

In one embodiment, to reduce the voltage sag amplitude of the busbar bus 500, the PSU 200 may increase the response speed of the standby loop. When PSU 200 is in standby mode, the loop gain is multiple times that of PSU 200 in power supply mode, and PFC voltage Vbus of PSU 200 in standby mode is 20V higher than PSU 200 in standby mode, so that response speed and loading capacity of a standby loop of PSU 200 are greatly improved. When the PSU 200 in the standby mode detects that the output voltage is instantaneously lower than 52V, the forced modification of the loop calculation result Pi is triggered, the loop PID calculation process is reduced, and the response speed of the standby loop is further improved.

In one embodiment, when 1 PSU200 out of 2 PSUs 200 in power mode fails, the remaining PSUs 200 are momentarily weighted. If the load factor of the remaining PSU200 is greater than full load, the output voltage of the PSU200 in the power supply mode is continuously reduced to 52V corresponding to the PSU200 triggering the OCP mechanism. When the output voltage of the PSU200 in the power supply mode drops to 53V of the output voltage of the PSU200 in the standby mode, the PSU200 in the standby mode is automatically loaded, so that the PSU200 in the power supply mode is ensured to quickly transfer partial load to the PSU200 in the standby mode before triggering the OCP mechanism, and low-voltage power failure of electric equipment caused by triggering the OCP mechanism by the PSU200 in the power supply mode is avoided.

In one embodiment, when 1 PSU200 out of 2 PSUs 200 in the power mode fails, the failed PSU200 actively regulates the output voltage and causes the output voltage to slowly drop. After the output voltage of the failed PSU200 drops below the output voltage of the PSU200 in the standby mode, the failed PSU200 slowly transfers the power supply load to the PSU200 in the standby mode, so that the problem that the output voltage drops too much due to rapid load switching when the failed PSU200 is directly powered off can be avoided.

When 1 PSU 200 of the 2 PSUs 200 in the power supply mode fails, a capacitor with a certain capacity is designed inside the failed PSU 200, and under the condition that the output is fully loaded, the power-down holding time of the failed PSU 200 can reach several milliseconds. After the power of the failed PSU 200 is lost, the output voltage of the failed PSU 200 slowly drops below the output voltage of the PSU 200 in the standby mode in the power-down holding time, and then the power is shut down.

At this time, the output voltage of the failed PSU 200 gradually drops and is lower than the output voltage of the remaining PSUs 200. The output voltage of the remaining PSU 200 is gradually loaded to near full load. The remaining PSUs 200 cannot power the powered device 100, resulting in a constant drop in the voltage of the bus bar bus 500. When the bus bar 500 drops to the output voltage of the PSU 200 in standby mode, one PSU 200 in standby mode switches to power mode and raises the output voltage. In this process, all PSUs 200 have no severe load switching impact, so that the power supply of the entire power supply system 10 is safe and the reliability is improved.

When the powered device 100 is in light load, one PSU 200 may supply power to the powered device 100. When a fault occurs in only one PSU 200, the PSU 200 slowly shifts the power supply load to one PSU 200 in the standby mode after the output voltage of that PSU 200 slowly drops below the output voltage of the PSU 200 in the standby mode. In this process, all PSUs 200 have no severe load switching impact, so that the power supply of the entire power supply system 10 is safe and the reliability is improved.

In one embodiment, when 1 PSU200 out of 2 PSUs 200 in the power mode fails, the output voltage of the failed PSU200 gradually increases, which causes the failed PSU200 to trigger the OVP mechanism and shut down. The failed PSU200 is switched instantaneously at shutdown, resulting in instantaneous switching of the power supply load of the failed PSU200, such that the voltage drop across the busbar bus 500 is large. In order to solve the problem that the voltage drop amplitude of the busbar bus 500 is too large, the PSU200 in the standby mode detects the voltage of the busbar bus 500 and pre-judges in advance whether the PSU200 in the power supply mode has a fault. When the PSU200 in the standby mode detects that the busbar bus 500 is greater than the rated voltage of the electric equipment 100, the PSU200 in the power supply mode may be pre-determined to fail in advance, and the output voltage may be raised in advance. When a PSU200 in the power supply mode fails, the PSU200 in the standby mode automatically carries the power supply load of the failed PSU200, so as to avoid excessive voltage drop amplitude of the busbar bus 500 caused by shutdown of the failed PSU 200.

When one PSU200 supplies power to the powered device 100, the voltage of the busbar bus 500 increases to 54.5V after the PSU200 is turned off by OVP. After the PSU200 in the standby mode detects the voltage of the busbar bus 500, the output voltage is temporarily raised to 53.5V, so as to improve the carrying capacity of the PSU200 in the standby mode, and avoid low-voltage outage of the electric equipment caused by the fact that the PSU200 in the power supply mode triggers an OCP mechanism.

The number of PSUs of the power supply system, the types of PSUs, and the like provided by the embodiments of the present application are not limited to the above embodiments, and all technical solutions implemented under the principles of the present application are within the protection scope of the present solution. Any one or more embodiments or illustrations in the specification, combined in a suitable manner, are within the scope of the present disclosure.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; these modifications or substitutions do not depart from the essence of the corresponding technical solutions from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A power supply system, comprising:

an electrical consumer (100),

the power supply units (200) are electrically connected with the electric equipment, and each power supply unit comprises a controller for controlling the power supply unit to provide electric energy for the electric equipment; the power supply units comprise a host, wherein the host is a power supply unit for controlling other power supply units to work, and a controller of the host controls the controllers of the other power supply units;

The host is used for controlling the battery supply units to be in one of a power supply mode, a standby mode and a sleep mode respectively based on the load rates of the battery supply units; the load factor is the ratio between the power supply power of the power supply unit when supplying power and the rated power of the power supply unit; the power supply mode refers to a mode that the power supply unit supplies power to the electric equipment; the standby mode is a mode in which the output voltage of the power supply unit is smaller than the rated voltage of the electric equipment and does not supply power to the electric equipment; the sleep mode is a mode in which the output voltage of the power supply unit is 0 and the electric equipment is not powered.

2. The power supply system of claim 1, further comprising:

and the communication bus (300) is respectively coupled with the electric equipment and the controllers of the power supply units and is used for establishing communication connection between the electric equipment and the power supply units and between the power supply units.

3. The power supply system according to claim 1 or 2, characterized by further comprising:

And the current equalizing bus (400) is respectively coupled with the controllers of the power supply units and is used for receiving the analog signals of the power supply units and sending the analog signals to the power supply units.

4. A power supply system according to any one of claims 1-3, further comprising:

and the busbar bus (500) is respectively and electrically connected with the electric equipment and the power supply units and is used for inputting the electric energy of the power supply units to the electric equipment.

5. The power supply system according to any one of claims 1 to 4, wherein an output voltage of the power supply unit in the standby mode is greater than a lower limit voltage of an operating voltage range of the electric device.

6. The power supply system according to any one of claims 2 to 5, wherein the power supply unit is provided with priority information,

and each power supply unit of the plurality of power supply units is used for receiving the priority information of other power supply units except the power supply units through the communication bus, and setting the power supply unit corresponding to the highest priority information or the lowest priority information in the priority information of the plurality of power supply units as the host.

7. The power supply system according to claim 6, wherein the host is further configured to set highest priority information among priority information of the plurality of power supply units as lowest priority information at intervals of set time; or alternatively, the process may be performed,

and setting the lowest priority information as the highest priority information in the priority information of the plurality of power supply units at intervals of set time.

8. The power supply system according to any one of claims 3 to 7, wherein the host is specifically configured to receive average load rates of the plurality of power supply units through the current sharing bus, and control the power supply units in the power supply mode to exit the power supply mode in response to the average load rates of the plurality of power supply units being less than a set load rate; and

and responding to the average load rate of the power supply units is larger than the set load rate, and controlling the power supply units in the standby mode and/or the sleep mode to enter a power supply mode.

9. The power supply system according to any one of claims 4 to 8, wherein the power supply unit includes a voltage sampling circuit,

the voltage sampling circuit of the power supply unit in the standby mode collects the voltage of the busbar bus, and responds to the fact that the voltage of the busbar bus is not larger than the output voltage of the power supply unit in the standby mode, the voltage sampling circuit enters a power supply mode.

10. A power supply unit, comprising:

a controller (220) coupled to the controller of the at least one power supply unit for controlling the at least one battery supply unit to be in one of a power mode, a standby mode and a sleep mode, respectively, based on a load factor of the at least one battery supply unit; the load factor is the ratio between the power supply power of the power supply unit when supplying power and the rated power of the power supply unit; the power supply mode is a mode for supplying power to electric equipment; the standby mode is a mode in which the output voltage of the power supply unit is smaller than the rated voltage of the electric equipment and does not supply power to the electric equipment; the sleep mode is a mode in which the output voltage of the power supply unit is 0 and the electric equipment is not powered.

11. The power supply unit according to claim 10, wherein the controller is specifically configured to control the power supply unit in the power supply mode to exit the power supply mode in response to the load rates of the at least one battery supply unit being less than the set load rate; and

and responding to the load rate of the at least one battery supply unit being larger than the set load rate, and controlling the power supply unit in the standby mode and/or the sleep mode to enter a power supply mode.

12. The power supply unit according to claim 10 or 11, wherein the controller is configured to collect an output voltage of the power supply unit in the power supply mode, and to control the power supply unit in the standby mode to enter the power supply mode in response to the output voltage of the power supply unit in the power supply mode being not greater than the output voltage of the power supply unit in the standby mode.

13. A server, comprising:

a plurality of the components and devices are arranged in the box body,

the power supply modules comprise controllers, and the controllers are used for controlling the power supply modules to supply electric energy for the components; the power supply modules comprise a host, wherein the host is a power supply module for controlling other power supply modules to work, and a controller of the host controls the controllers of the other power supply modules;

the host is used for controlling the battery supply units to be in one of a power supply mode, a standby mode and a sleep mode respectively based on the load rates of the battery supply units; the load rate is the ratio between the power supply power of the power supply module and the rated power of the power supply module when the power supply module supplies power; the power supply mode is a mode that the power supply module supplies power to the components; the standby mode is a mode in which the output voltage of the power supply module is smaller than the rated voltage of the components and does not supply power to the components; the sleep mode is a mode in which the output voltage of the power supply module is 0 and the power is not supplied to the plurality of components.

14. The server according to claim 13, wherein the power supply module is provided with priority information,

and each power supply module of the power supply modules is used for respectively receiving priority information of other power supply modules except the power supply module, and setting the power supply module corresponding to the highest priority information or the lowest priority information in the priority information of the power supply modules as the host.

15. The server according to claim 13 or 14, wherein the host is specifically configured to receive an average load rate of the plurality of power supply modules, and control the power supply modules in the power supply mode to exit the power supply mode in response to the average load rates of the plurality of power supply modules being less than the set load rate; and

and responding to the average load rate of the power supply modules is larger than the set load rate, and controlling the power supply modules in the standby mode and/or the sleep mode to enter a power supply mode.