Power supply and backup system, power supply and backup control method, and data center

Abstract

The present application relates to the technical field of computers, and provides a power supply and backup system, a power supply and backup control method, and a data center. The power supply and backup system comprises: a first power source input module, which is used for converting an inputted first external power source into an alternating-current power source required by an alternating-current bus; a second power source input module, which is used for converting an inputted second external power source into a first direct-current power source required by a direct-current bus; a third power source input module, which is used for converting an inputted distributed power source into a second direct-current power source required by the direct-current bus; a direct-current backup power module, which is used for providing a backup direct-current power source for the direct-current bus and storing electric energy provided by the distributed power source; and a power source supply module, which is used for converting at least one of an alternating-current power source, the first direct-current power source, the second direct-current power source, and the backup direct-current power source into a working power source of each device in a server cabinet. The system provided by the present application improves the reliability and efficiency of power supply for the data center, and reduces the cost of power utilization.

Description

Power supply and backup system, power supply and backup control method, and data center

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the Patent Office of China on December 26, 2023, with application number 202311802110.5 and application name “Power supply and backup system, power supply and backup control method and data center”, all contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of computer technology, and in particular to a backup power supply system, a backup power supply control method, and a data center. Background Art

[0004] Data centers are systems used for centralized storage, management, processing, and distribution of data, typically consisting of a large number of computers, servers, and supporting network equipment and power supplies. Data centers typically utilize power supply systems equipped with UPS (Uninterruptible Power Supply). Because these power supply systems are equipped with UPSs, they cannot directly supply power to the load and require an inverter module. This results in a complex circuit topology and poor power supply reliability. From the power supply system input to the end load, the power supply must undergo multiple rectification and inversion transformations, each of which results in energy loss and low power supply efficiency. UPSs typically come as complete units, making it difficult to modify incoming and outgoing line equipment and resulting in poor scalability.

[0005] Summary of the Invention

[0006] The present application provides a power supply and backup system for use in a data center, comprising a first power input module, a second power input module, a third power input module, an AC bus, a DC bus, a DC backup power module, and a power supply module;

[0007] The first power input module is connected to the AC bus, and is used to convert the input first external power into the AC power required by the AC bus;

[0008] The second power input module is connected to the DC bus, and is used to convert the input second external power into the first DC power required by the DC bus;

[0009] The third power input module is connected to the DC bus, and is used to convert the input distributed power into a second DC power required by the DC bus;

[0010] The DC backup power module is connected to the DC bus, and is used to provide backup DC power to the DC bus and store electric energy provided by the distributed power supply; and

[0011] The power supply module is connected to the AC bus and the DC bus respectively. The power supply module is used to convert at least one of the AC power supply, the first DC power supply, the second DC power supply and the backup DC power supply into the working power supply of each device in the server cabinet.

[0012] In some embodiments, multiple power supply modules are redundantly provided in the server cabinet;

[0013] The plurality of power supply modules include a first power supply module and a second power supply module;

[0014] A first power supply module is connected to the AC bus, and the first power supply module is used to convert the AC power into a working power supply for each device in the server cabinet; and

[0015] The second power supply module is connected to the DC bus and is used to convert at least one of the first DC power supply, the second DC power supply and the backup DC power supply into a working power supply for each device in the server cabinet.

[0016] In some embodiments, a plurality of equipment power buses are provided in the server cabinet; the voltage levels of the equipment power buses are different;

[0017] The equipment power bus is used to connect the power output end of the power supply module and the power input end of each device in the server cabinet, and is used to provide working power to each device.

[0018] In some embodiments, the DC backup power module includes a bidirectional DC conversion submodule and a battery submodule connected in sequence;

[0019] The bidirectional DC conversion submodule is connected to the DC bus. The bidirectional DC conversion submodule is used to convert the power supply voltage of the DC bus into the battery voltage of the battery submodule in response to determining that the battery submodule is in a charging state. The bidirectional DC conversion submodule is used to convert the battery voltage of the battery submodule into the power supply voltage of the DC bus in response to determining that the battery submodule is in a discharging state.

[0020] In some embodiments, the DC backup power module is further configured to:

[0021] Get the bus voltage of the DC bus;

[0022] In response to determining that the bus voltage is greater than a preset voltage target value, controlling the battery submodule to store the electric energy provided by the DC bus; the battery submodule is in a charging state; or

[0023] In response to determining that the bus voltage is less than a preset voltage target value, the battery submodule is controlled to provide stored electrical energy to the DC bus; the battery submodule is in a discharging state.

[0024] In some embodiments, the DC backup power module is further configured to:

[0025] Obtaining the generated power of the distributed power supply connected to the third power input module and the working status of each DC backup power module; and

[0026] In response to determining that the generated power of the distributed power source is greater than a preset power threshold or the number of DC backup power modules in abnormal working status is greater than a preset threshold, the preset voltage target value is adjusted.

[0027] In some embodiments, the DC backup power module is disposed in a server cabinet and / or a power storage cabinet.

[0028] In some embodiments, when the DC backup power module is set in the server cabinet, the number of DC backup power modules is determined based on the peak power of each device in the server cabinet, the backup power requirement duration corresponding to the server cabinet, and the battery capacity of the battery sub-module in each DC backup power module.

[0029] In some embodiments, when the DC backup power module is set in the power storage cabinet, the number of DC backup power modules is determined based on the total amount of power provided by the distributed power supply, the number of power storage cabinets, and the battery capacity of the battery sub-modules in each DC backup power module.

[0030] In some embodiments, the system further includes a backup power control module;

[0031] The backup power control module is connected to each DC backup power module and is used to control the energy storage of each DC backup power module based on the load power of the current working bus; the current working bus includes an AC bus and / or a DC bus.

[0032] In some embodiments, the backup power control module is configured to:

[0033] Get the load power of the current working bus in the current time period;

[0034] In response to determining that the load power in the current time period is greater than the load power in the previous time period, comparing the power storage capacity of each DC backup power module in the current time period with the power reserve capacity of each DC backup power module;

[0035] In response to determining that the stored electric energy is greater than the reserve electric energy, controlling the DC backup power module to release electric energy and adjusting the voltage of the current working bus; or

[0036] In response to determining that the electric energy storage amount is less than the electric energy backup amount, the DC backup power module is controlled to store electric energy.

[0037] In some embodiments, the system further comprises an AC switching module and a DC switching module;

[0038] The AC switching module is connected to the AC bus and the power supply module, and the AC switching module is used to conduct the circuit between the AC bus and the power supply module in response to determining that the AC bus is supplying power; and

[0039] The DC switching module is connected to the DC bus and the power supply module. The DC switching module is used to conduct the circuit between the DC bus and the power supply module in response to determining that the DC bus is supplying power.

[0040] In some embodiments, in response to determining that the AC switching module is turned on, the DC switching module is turned off; and

[0041] In response to determining that the DC switching module is turned on, the AC switching module is turned off.

[0042] The present application provides a power supply and backup control method, which is applied to a power supply and backup system, including:

[0043] Obtain the generated power of distributed power sources;

[0044] In response to determining that the generated power is zero, determining the load power of the backup power system based on the operating power of each device in each server cabinet in the backup power system;

[0045] In response to determining that the load power of the backup power supply system is less than a first preset load power threshold, controlling the first power input module to connect to the first external power supply; controlling the second power input module to disconnect from the second external power supply; or

[0046] In response to determining that the load power of the backup power system is greater than a second preset load power threshold, the first power input module is controlled to be connected to the first external power supply; the second power input module is controlled to be connected to the second external power supply; and the power input power of the first power input module is controlled to be equal to the power input power of the second power input module.

[0047] In some embodiments, after obtaining the generated power of the distributed power source, the method further includes:

[0048] In response to determining that the generated power is greater than zero and less than the load power of the backup power system, it is determined that the power input priority of the third power input module is greater than the power input priority of the first power input module, and the power input priority of the first power input module is greater than the power input priority of the second power input module.

[0049] In some embodiments, after obtaining the generated power of the distributed power source, the method further includes:

[0050] In response to determining that the generated power is greater than the load power of the backup power system, controlling the first power input module to be disconnected from the first external power source, and controlling the second power input module to be disconnected from the second external power source;

[0051] Determining the excess power of the distributed power source based on the difference between the generated power and the load power; and

[0052] The electric energy corresponding to the excess power is stored in the power storage cabinet in the backup power supply system.

[0053] In some embodiments, the method further comprises:

[0054] Obtain the generated power of the distributed power source in a preset time period, and the load power of the power supply and backup system in a preset time period;

[0055] In response to determining that the generated power is greater than the load power, determining the remaining amount of electric energy of the distributed power source based on a difference between the generated power and the load power and a duration of a preset time period; and

[0056] Control each DC backup power module to store electric energy; the sum of the electric energy storage capacity of each DC backup power module is the remaining electric energy.

[0057] In some embodiments, after obtaining the generated power of the distributed power source in a preset time period and the load power of the power supply and backup system in the preset time period, the method further includes:

[0058] In response to determining that the generated power is less than the load power, determining a power shortage value of the distributed power source based on a difference between the load power and the generated power and a duration of a preset time period; and

[0059] Controls the power release of each DC backup power module; the sum of the power release amounts of each DC backup power module is the power shortage value.

[0060] The present application provides a data center, including a backup power supply system and a server cabinet connected to the backup power supply system; the server cabinet is used for data storage and / or data processing.

[0061] In some embodiments, a power storage cabinet is also included; the power storage cabinet is connected to the power supply and backup system and is used to store the electric energy provided by the distributed power supply.

[0062] The present application provides an electronic device, comprising one or more processors; and a memory associated with the one or more processors, the memory being used to store computer-readable instructions, which implement the above-mentioned backup power supply control method when read and executed by the one or more processors.

[0063] The present application provides a non-transitory computer-readable storage medium having computer-readable instructions stored thereon. When the computer-readable instructions are executed by one or more processors, the above-mentioned backup power supply control method is implemented.

[0064] The backup power supply system, backup power supply control method and data center provided by the present application, the first power input module is used to convert the input first external power supply into the AC power required by the AC bus; the second power input module is used to convert the input second external power supply into the first DC power required by the DC bus; the third power input module is used to convert the input distributed power supply into the second DC power required by the DC bus; the DC backup power module is used to provide backup DC power to the DC bus and store the electric energy provided by the distributed power supply; the power supply module is used to convert at least one of the AC power supply, the first DC power supply, the second DC power supply and the backup DC power supply into the working power supply for each device in the server cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0066] In order to more clearly illustrate the technical solutions in the present application or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0067] FIG1 is a schematic structural diagram of a power supply and backup system provided by the present application;

[0068] FIG2 is another structural diagram of the power supply and backup system provided by the present application;

[0069] FIG3 is another structural diagram of the power supply and backup system provided by the present application;

[0070] FIG4 is another structural diagram of the power supply and backup system provided by the present application;

[0071] FIG5 is another structural diagram of the power supply and backup system provided by the present application;

[0072] FIG6 is yet another structural diagram of the power supply and backup system provided by the present application;

[0073] FIG7 is a flow chart of a power supply and backup control method provided in the present application;

[0074] FIG8 is a schematic diagram of the structure of a data center provided by this application;

[0075] FIG9 is another structural diagram of a data center provided by the present application;

[0076] FIG10 is a schematic structural diagram of the electronic device provided in this application. DETAILED DESCRIPTION

[0077] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0078] It should be noted that the terms "first", "second" etc. in this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchangeable in appropriate circumstances, so that the embodiments of the application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, the process, method, system, product or equipment comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or that are inherent to these processes, methods, products or equipment.

[0079] Figure 1 is a structural schematic diagram of the power supply and backup system provided in the present application. As shown in Figure 1, the power supply and backup system 100 includes a first power input module 110, a second power input module 120, a third power input module 130, an alternating current (AC) bus 140, a direct current (DC) bus 150, a DC backup power module 160 and a power supply module 170.

[0080] The first power input module 110 is connected to the AC bus 140 and is used to convert the input first external power supply into the AC power required by the AC bus 140; the second power input module 120 is connected to the DC bus 150 and is used to convert the input second external power supply into the first DC power required by the DC bus 150; the third power input module 130 is connected to the DC bus 150 and is used to convert the input distributed power supply into the second DC power required by the DC bus 150; the DC backup power module 160 is connected to the DC bus 150 and is used to provide backup DC power to the DC bus 150 and store the electrical energy provided by the distributed power supply; the power supply module 170 is connected to the AC bus 140 and the DC bus 150 respectively and is used to convert at least one of the AC power, the first DC power, the second DC power and the backup DC power into the working power supply for each device in the server cabinet.

[0081] In one or more embodiments, the power supply and backup system provided in the embodiments of the present application is applicable to a data center. The system can provide operating power to various devices in various server cabinets in the data center. The server cabinet can be used to install at least one server. For example, if the server cabinet is a rack, multiple rack-mounted servers can be installed in the server cabinet; if the server cabinet is a blade chassis, multiple blade servers can be installed in the server cabinet; if the server cabinet is a cabinet corresponding to a single server, the server cabinet can be installed with the corresponding computing devices, storage devices, and network devices, etc.

[0082] From the perspective of power input, the backup power supply system mainly includes three power inputs, which are implemented through the first power input module, the second power input module and the third power input module respectively.

[0083] The first power input module is connected to a first external power source, and the second power input module is connected to a second external power source. The first external power source and the second external power source can be power sources provided by an external power grid, and their power source types can be the same or different. For example, the first external power source and the second external power source can be 380VAC power sources (380 volt AC power sources) provided by the power grid. For another example, the first external power source can be an AC power source provided by the power grid, and the second external power source can be a DC power source provided by the power grid.

[0084] The third power input module connects to a distributed power source. Distributed power sources refer to power generation equipment located at or near a load center (data center). Distributed power sources can include solar photovoltaic systems, wind power systems, fuel cell systems, natural gas power systems, hydropower systems, and biomass power systems. Distributed power sources are generally considered a cleaner and more sustainable energy source.

[0085] The first external power supply, the second external power supply and the distributed power supply form a mutually redundant relationship, wherein the first external power supply and the second external power supply have the same source, forming a mutually redundant relationship of the external power supplies.

[0086] From the perspective of power transmission, the power supply and backup system mainly includes AC busbars and DC busbars. The busbars collect, distribute, and transmit the power obtained by each power input module in the power supply and backup system.

[0087] The first power input module can be connected to the AC bus to convert the input first external power supply into the AC power required by the AC bus. Under normal circumstances, the first external power supply is usually an AC power supply. Therefore, the first power input module needs to control the power on and off, or adjust the voltage of the first external power supply to the power supply voltage of the AC bus. There is no need to invert and rectify the external power supply, so the power loss is relatively small. For example, when the first external power supply is a 380V three-phase AC power supply, the voltage of the AC bus can be 220V, and the first power input module can be a PDU (Power Distribution Unit). In this case, the first power input module plays the role of distributing power.

[0088] The second power input module can be connected to the DC bus to convert the input second external power supply into the first DC power supply required by the DC bus. Since the second external power supply is usually an AC power supply, the second power input module needs to rectify the second external power supply and convert the AC power supply into a first DC power supply. During this process, a certain degree of power loss may be generated. For example, when the second external power supply is a 380V three-phase AC power supply, the voltage of the DC bus can be 270V, and the second power input module can include a rectifier, etc. In this case, the second power input module plays the role of AC / DC conversion. In response to determining that the second external power supply is a DC power supply, the second power input module can be set as a switch module to play the role of accessing and distributing power.

[0089] A third power input module can be connected to the DC bus to convert the input distributed power supply into a second DC power supply required by the DC bus. In response to determining that the distributed power supply is an AC power supply, the third power input module needs to perform AC-DC conversion on the distributed power supply to obtain a second DC power supply. In response to determining that the distributed power supply is a DC power supply, the third power input module needs to perform grid-connected conversion on the distributed power supply to obtain the second DC power supply. The grid-connected conversion here primarily involves adjusting the voltage of the distributed power supply to the voltage of the second DC power supply.

[0090] The first DC power supply and the second DC power supply form a mutually redundant relationship of DC power supplies on the DC bus.

[0091] It is understandable that the first power input module, the second power input module and the third power input module may also be configured with devices or components for controlling the on and off of the power supply, so as to control the on and off of the power supply according to actual conditions.

[0092] From the perspective of power storage, the backup power supply system mainly includes a DC backup power module. The DC backup power module is connected to the DC bus and is used to provide backup DC power to the DC bus. For example, when a power failure occurs in at least one of the first external power supply, the second external power supply, and the distributed power supply, the DC backup power module provides backup DC power to the DC bus to compensate for the lost power and ensure the normal operation of each server in the data center. Since the power provided by the distributed power supply is green and clean power, the power provided by the distributed power supply is preferentially used during the operation of the data center. In response to determining that the total amount of power provided by the distributed power supply is greater than the total amount of power consumed by the data center, the DC backup power module also stores the power provided by the distributed power supply.

[0093] From a power distribution perspective, the backup power supply system primarily includes a power supply module. This module connects to the AC busbar to receive AC power. It also connects to the DC busbar to receive a first DC power source, a second DC power source, and a backup DC power source. The power supply module converts the received power (at least one of the AC power source, the first DC power source, the second DC power source, and the backup DC power source) into operating power for various devices in the server cabinet.

[0094] The power supply module can be a PSU (Power Supply Unit), which includes two conversion modules: an AC / DC conversion module and a DC / DC conversion module. The power supply module is connected to various devices to provide operating power to these devices.

[0095] The power supply module can be set inside the server cabinet. An AC power supply common terminal can be set inside the server cabinet, and the common terminal is used to connect to the AC bus; a DC power supply common terminal can be set, and the common terminal is used to connect to the DC bus.

[0096] The power supply and backup system provided in the embodiment of the present application comprises a first power input module for converting an input first external power supply into an AC power supply required by the AC bus; a second power input module for converting an input second external power supply into a first DC power supply required by the DC bus; a third power input module for converting an input distributed power supply into a second DC power supply required by the DC bus; a DC backup power module for providing a backup DC power supply to the DC bus and storing the electric energy provided by the distributed power supply; a power supply module for converting at least one of the AC power supply, the first DC power supply, the second DC power supply and the backup DC power supply into a working power supply for each device in the server cabinet; The power input end of the system realizes the mutual redundancy of two external power supplies and distributed power supplies, realizes the power supply redundancy of AC bus and DC bus within the system, and is equipped with a DC backup power module to realize power backup, thereby improving the reliability of power supply in the data center. Since the DC backup power module can store the power provided by the distributed power supply on the basis of providing backup power, the utilization rate of distributed clean energy is improved, the efficiency of power supply in the data center is improved, and the electricity cost of the data center is reduced. Since the bus connection device is adopted within the system, the circuit topology is simplified, which facilitates the modification of the incoming and outgoing line equipment, thereby improving the flexibility and scalability of the power supply in the data center.

[0097] In some embodiments, multiple power supply modules are redundantly arranged in the server cabinet; the multiple power supply modules include a first power supply module and a second power supply module; the first power supply module is connected to the AC bus and is used to convert the AC power into the working power of each device in the server cabinet; the second power supply module is connected to the DC bus and is used to convert at least one of the first DC power supply, the second DC power supply and the backup DC power supply into the working power of each device in the server cabinet.

[0098] In one or more embodiments, multiple power supply modules may be provided in the server cabinet, and these power supply modules may be configured to be redundantly connected in parallel. FIG2 is another schematic diagram of the structure of the backup power supply system provided by the present application. As shown in FIG2 , the multiple power supply modules may be divided into a first power supply module 171 and a second power supply module 172 based on the type of busbars connected thereto.

[0099] The first power supply module is connected to the AC bus and is used to convert AC power into operating power for various devices in the server cabinet. The first power supply module may include an AC / DC converter module and a DC / DC converter module connected in sequence. The AC / DC converter module converts the AC power (220VAC) from the DC bus into an intermediate DC power supply (400VDC), and the DC / DC converter module converts the intermediate DC power supply into the operating power required by various devices, such as 12VDC or 48VDC.

[0100] The second power supply module is connected to the DC bus and is configured to convert at least one of the first DC power supply, the second DC power supply, and the backup DC power supply into operating power for various devices in the server cabinet. The second power supply module may include a DC / DC converter module configured to directly convert the first DC power supply, the second DC power supply, or the backup DC power supply into the operating power required by various devices, such as 12VDC or 48VDC.

[0101] A server cabinet can be equipped with a first number of first power supply modules and a second number of second power supply modules. The first number of first power supply modules should provide enough power to meet the power requirements of various devices within the server cabinet, and the second number of second power supply modules should also provide enough power to meet the power requirements of various devices within the server cabinet. In other words, although the first and second power supply modules are connected to different busbars, they provide redundant power supply functionality.

[0102] If a power supply module supports both AC and DC power, multiple power supply modules can be installed in the server cabinet, with half connected to the AC bus and half to the DC bus. Together, these modules provide the power required by each device. The total output power of these modules should equal the total operating power of each device in the server cabinet. In other words, the number of power supply modules can be determined based on the total operating power and the output power of each module.

[0103] The power supply and backup system provided in the embodiment of the present application redundantly sets multiple power supply modules in the server cabinet. The multiple power supply modules include a first power supply module and a second power supply module. The first power supply module is connected to the AC bus, and the second power supply module is connected to the DC bus, thereby realizing redundant backup of the power supply function.

[0104] In some embodiments, multiple device power buses are provided in the server cabinet; the voltage levels of the various device power buses are different; the device power buses are used to connect the power output end of the power supply module and the power input end of each device in the server cabinet, and are used to provide working power to each device.

[0105] In one or more embodiments, considering that the operating power supply voltages of various devices in a server cabinet may vary, multiple device power buses are provided in the server cabinet, each with a different voltage level. For example, a first device power bus with a power supply voltage of 12V may be provided in the server cabinet, while a second device power bus with a power supply voltage of 48V may be provided in the server cabinet.

[0106] The power outputs of the power supply modules (of the same voltage level) are connected in parallel and then connected to the corresponding voltage level equipment power busbars, providing operating power to the corresponding voltage level for each device in the server cabinet. The number of equipment power busbars can be determined based on the voltage level of each device.

[0107] The power supply and backup system provided in the embodiment of the present application is equipped with multiple device power buses in the server cabinet. The voltage levels of the power buses of each device are different, which can meet the power diversity requirements of each device and improve the scalability of the server cabinet in the data center and the flexibility of equipment configuration.

[0108] In some embodiments, the DC backup power module includes a bidirectional DC conversion submodule and a battery submodule connected in sequence; the bidirectional DC conversion submodule is connected to the DC bus, and the bidirectional DC conversion submodule converts the power supply voltage of the DC bus into the battery voltage of the battery submodule in response to determining that the battery submodule is in a charging state, and the bidirectional DC conversion submodule converts the battery voltage of the battery submodule into the power supply voltage of the DC bus in response to determining that the battery submodule is in a discharging state.

[0109] In one or more embodiments, the DC backup power module may include a bidirectional DC conversion submodule and a battery submodule. The battery submodule may be a battery with high power density and high energy density, such as a lithium iron phosphate battery.

[0110] The bidirectional DC conversion submodule connects the DC bus and the battery submodule. In response to determining that the battery submodule is in a charging state, the bidirectional DC conversion submodule converts the DC bus's power supply voltage into the battery submodule's battery voltage, allowing the battery submodule to absorb and store electrical energy provided by the DC bus. In response to determining that the battery submodule is in a discharging state, the bidirectional DC conversion submodule converts the battery submodule's battery voltage into the DC bus's power supply voltage, allowing the battery submodule to release stored electrical energy.

[0111] For example, when the first external power supply, the second external power supply, and the distributed power supply partially or completely fail, the battery submodule in the DC backup power module is in a discharged state, and the bidirectional DC conversion submodule converts the battery voltage of the battery submodule into the power voltage of the DC bus, providing backup DC power to the DC bus. When the first external power supply, the second external power supply, and the distributed power supply partially or completely recover from the failure, and the AC bus or DC bus can provide the power demand of each device in the server cabinet and has surplus power, the battery submodule in the DC backup power module is in a charged state, and the bidirectional DC conversion submodule converts the power voltage of the DC bus into the battery voltage of the battery submodule.

[0112] The power supply and backup system provided in the embodiment of the present application has a bidirectional DC conversion submodule configured in the DC backup power module, so that the DC bus voltage and the battery voltage can be freely converted, so that the battery submodule can use battery cells of differentiated specifications such as different batches and different capacities, so there is no need to meet the consistency requirements of the battery cells. In addition, the DC backup power module can also be used in parallel with multiple modules, and can support online hot plugging, etc. In summary, the power supply and backup system provided in the present application improves the flexibility of the power supply and backup system equipment configuration.

[0113] In some embodiments, the DC backup power module is also used to: obtain the bus voltage of the DC bus; in response to determining that the bus voltage is greater than a preset voltage target value, control the battery sub-module to store the electric energy provided by the DC bus, so that the battery sub-module is in a charging state; in response to determining that the bus voltage is less than a preset voltage target value, control the battery sub-module to provide the stored electric energy to the DC bus, so that the battery sub-module is in a discharging state.

[0114] In one or more embodiments, the DC backup power module may also be used to ensure that the bus voltage of the DC bus remains stable.

[0115] The DC backup power module monitors the bus voltage of the DC bus and obtains the bus voltage according to a preset monitoring cycle. The preset voltage target value can be set according to actual needs; for example, the preset voltage target value can be set to 270V. During data center operation, the bus voltage of the DC bus must remain stable, that is, the bus voltage must be equal to the preset voltage target value. If the bus voltage is not stable and fluctuates, it will cause the equipment in the server cabinets in the data center to malfunction or even damage the equipment.

[0116] If the bus voltage exceeds the preset target voltage, it indicates that the DC bus voltage has increased. This could be because the generated power from the second external power supply or distributed power source exceeds the load power on the DC bus, or a fault has occurred in some of the loads on the DC bus, causing a drop in load power. The battery submodule can be controlled to store the energy provided by the DC bus, absorbing the excess power. At this point, the battery submodule is in a charging state.

[0117] When the bus voltage is lower than the preset voltage target value, it indicates that the power supply voltage in the DC bus has dropped. This may be because the generated power provided by the second external power supply or the distributed power supply is lower than the load power in the DC bus, or the working power of some loads in the DC bus has increased or new loads have been added. The battery sub-module can be controlled to provide the stored electrical energy to the DC bus, that is, to release the electrical energy corresponding to the insufficient generated power.

[0118] The load on the DC bus refers to devices that consume power, specifically the devices in the server cabinets connected to the DC bus. The load power of the DC bus is determined by the operating power of the devices in the server cabinets connected to the DC bus.

[0119] The backup power supply system provided in the embodiment of the present application monitors the bus voltage of the DC bus through a DC backup power module, and maintains the DC bus voltage stable by storing or releasing electrical energy, thereby ensuring the normal operation of equipment in each server cabinet in the data center.

[0120] In some embodiments, the DC backup power module is also used to: obtain the generated power of the distributed power supply connected to the third power input module, and the working status of each DC backup power module; in response to determining that the generated power of the distributed power supply is greater than a preset power threshold or the number of DC backup power modules with abnormal working status is greater than a preset threshold, adjust the preset voltage target value.

[0121] In one or more embodiments, the preset target voltage value corresponding to the DC bus can be dynamically adjusted in real time. When the DC bus power supply voltage fluctuates within a certain range, the power supply module connected to the DC bus can operate normally. The DC backup power module connected to the DC bus can also adjust the preset target voltage value to achieve voltage regulation.

[0122] The generated power of the distributed power supply and the working status of each DC backup power module can be monitored.

[0123] The preset power threshold can be determined based on the load power in the DC bus. If the generated power of the distributed power supply is greater than the preset power threshold, it indicates that the power provided by the distributed power supply to the backup power system exceeds the power required by the individual devices in the server cabinets in the data center. In this case, the preset voltage target value can be adjusted. In some embodiments, the preset voltage target value can be set to be increased so that the DC backup power module can absorb and store as much power as possible from the distributed power supply.

[0124] The number of DC backup power modules in abnormal working status is greater than the preset threshold, indicating that the number of DC backup power modules that can actually absorb and store the electric energy provided by the distributed power supply has decreased. However, since the electric energy provided by the distributed power supply is still continuously provided, the preset voltage target value can be adjusted. In some embodiments, it can be set to increase the preset voltage target value so that the DC backup power modules in normal working status can absorb and store as much electric energy provided by the distributed power supply as possible.

[0125] The power supply and backup system provided in the embodiment of the present application, by setting a preset voltage target value corresponding to the DC bus, enables the DC backup power module to absorb and store as much electric energy provided by the distributed power supply as possible when the power generation power of the distributed power supply increases or some DC backup power modules malfunction, thereby maintaining a stable DC bus voltage and ensuring the normal operation of the equipment in each server cabinet of the data center.

[0126] In some embodiments, the DC backup power module is installed in the server cabinet and / or the power storage cabinet. In one or more embodiments, the DC backup power module can be installed in a distributed structure. In one aspect, the DC backup power module can be installed in each server cabinet; in another aspect, the DC backup power module can be installed in a separate power storage cabinet in the data center; in another aspect, the DC backup power module can be installed in both the server cabinet and the power storage cabinet.

[0127] The power supply and backup system provided in the embodiment of the present application distributes the DC backup power modules so that the DC backup power modules can be flexibly configured in the server cabinet. There is no need to set up a dedicated backup power room for the data center, which can effectively save the space of the separate backup power room and reduce the equipment space required by the data center.

[0128] In some embodiments, when the DC backup power module is set in the server cabinet, the number of DC backup power modules is determined based on the peak power of each device in the server cabinet, the backup power requirement duration corresponding to the server cabinet, and the battery capacity of the battery sub-module in each DC backup power module.

[0129] In one or more embodiments, FIG3 is another schematic diagram of the structure of the backup power supply system provided by the present application. As shown in FIG3, the DC backup power module 160 can be disposed in the server cabinet 200. The power supply module 170 is also disposed in the server cabinet 200. The output end of the power supply module 170 is connected to the device power bus 210.

[0130] The number of DC backup power modules can be determined based on the peak power requirements of each device in the server cabinet, the required backup power duration for the server cabinet, and the battery capacity of each DC backup power module. The backup power duration refers to the length of time each device in the server cabinet must operate on backup DC power if both external power supplies and the distributed power supply (DPS) fail. Peak power is the maximum power a device can reach within a specified period of time.

[0131] For example, the total backup power requirement for each device in the server cabinet can be determined by multiplying the peak power of each device in the server cabinet by the corresponding backup power duration. The quotient of the total backup power requirement and the battery capacity of each DC backup module can be used to determine the number of DC backup modules required in the server cabinet. This number can be used as the minimum number required for the server cabinet.

[0132] In the actual construction process of a data center, server cabinets are configured in stages as the business volume increases, and the various devices in each server cabinet are also configured in stages as the business volume increases. The DC backup power module provided in the embodiment of the present application can be configured in stages according to actual needs.

[0133] The backup power supply system provided in the embodiment of the present application distributes the DC backup power modules in each server cabinet, eliminating the need to set up a dedicated backup power room for the data center, thereby effectively saving space in a separate backup power room.

[0134] In the above embodiment, the DC backup power modules in each server cabinet are connected to the DC bus, enabling redundant backup power for the DC backup power modules in different server cabinets. For example, if a DC backup power module in one server cabinet fails, the DC backup power modules in the remaining server cabinets connected to the DC bus will provide backup power for that server cabinet.

[0135] The DC backup power modules in each server cabinet are configured based on the server cabinet's peak operating conditions. Similarly, the configurations for the remaining server cabinets in the data center should also be based on the server cabinet's peak operating conditions. Because the DC backup power modules in these server cabinets are all connected to the same DC bus, they can be deployed uniformly. Furthermore, in practice, all server cabinets will not operate at peak power for extended periods of time at the same time.

[0136] In some embodiments, when the DC backup power module is set in the power storage cabinet, the number of DC backup power modules is determined based on the total amount of power provided by the distributed power supply, the number of power storage cabinets, and the battery capacity of the battery sub-modules in each DC backup power module.

[0137] In one or more embodiments, FIG4 is another structural diagram of the backup power supply system provided by the present application. As shown in FIG4 , the DC backup power module 160 may be disposed in the power storage cabinet 300 .

[0138] Separate power storage cabinets can be installed in a data center. The number of power storage cabinets can be adjusted based on needs, for example, the available cabinet space in the data center. Power storage cabinets are primarily used to house DC backup power modules, which are used to store energy provided by distributed power sources.

[0139] In this case, the number of DC backup modules is determined based on the total amount of power provided by the distributed power supply, the number of power storage cabinets, the number of DC backup modules in the power storage cabinets, and the battery capacity of the battery submodules in each DC backup module. For example, the total amount of power storage corresponding to a single power storage cabinet can be determined based on the quotient of the total amount of power provided by the distributed power supply and the number of power storage cabinets. The number of DC backup modules in a single power storage cabinet can be determined based on the quotient of the total amount of power storage corresponding to a single power storage cabinet and the battery capacity of the battery submodules in the DC backup module. On this basis, the number of DC backup modules in all power storage cabinets in the data center can also be determined.

[0140] The above solution considers the case where the total amount of energy provided by the distributed power generation is stored in the power storage cabinet. In actual operation, in addition to the power storage cabinet, the DC backup power modules in the server cabinets can also participate in the storage of energy provided by the distributed power generation. This allows the entire data center to store as much energy from the distributed power generation as possible, improving the utilization rate of distributed clean energy, increasing the efficiency of the data center's power supply, and reducing the data center's electricity costs.

[0141] In the above embodiment, the distributed power supply (DGS) and the data center form a distributed DC microgrid. The DGS primarily provides power, while the data center primarily consumes and stores it. The third power input module in the power supply and backup system converts the high-voltage DC power provided by the DGS into the DC power required by the data center.

[0142] In some embodiments, the system also includes a backup power control module; the backup power control module is connected to each DC backup power module, and the backup power control module is used to control the energy storage of each DC backup power module based on the load power of the current working bus; the current working bus includes an AC bus and / or a DC bus.

[0143] In one or more embodiments, FIG5 is another structural diagram of the backup power supply system provided in the present application. As shown in FIG5 , the backup power supply system further includes a backup power control module 180 connected to each DC backup power module 160 .

[0144] The currently operating bus refers to the bus currently in operation. During data center operation, depending on the load, power can be supplied solely by the AC bus or the DC bus, or by both the AC and DC buses. Therefore, the currently operating bus can be an AC bus, a DC bus, or both. The load power of the currently operating bus is actually the load power of the backup power system, representing the sum of the operating power of each device in each server cabinet within the backup power system.

[0145] The backup power control module monitors the load power of the current working bus, obtains the load power, and controls the energy storage of each DC backup power module based on the load power. For example, if the load power of the current working bus is less than the generated power of the distributed power source, the DC backup power module can be controlled to store energy; if the load power of the current working bus is greater than the generated power of the distributed power source, the DC backup power module can be controlled to release the stored energy.

[0146] The backup power supply system provided in the embodiment of the present application controls the energy storage of each DC backup power module according to the load power of the current working bus through the backup power control module, thereby improving the utilization rate of distributed clean energy and reducing the electricity cost of the data center.

[0147] In some embodiments, the backup power control module is used to: obtain the load power of the current working bus in the current time period; in response to determining that the load power of the current time period is greater than the load power of the previous time period, compare the power storage capacity of each DC backup power module in the current time period with the power reserve capacity of each DC backup power module; in response to determining that the power storage capacity is greater than the power reserve capacity, control the DC backup power module to release power and adjust the voltage of the current working bus; in response to determining that the power storage capacity is less than the power reserve capacity, control the DC backup power module to store power.

[0148] In one or more embodiments, the reserve power capacity refers to the amount of additional power reserved by the DC backup module to cope with sudden increases in power load or equipment failures in the data center. The DC backup module must maintain a power reserve of at least this amount during data center operation to ensure that all equipment in the data center can operate normally in the event of an emergency.

[0149] The power storage capacity of the DC backup power module in the current time period refers to the actual amount of power stored in the DC backup power module in the current time period.

[0150] The backup power control module monitors the load power of the current working bus in each time period. If the load power in the current time period is greater than the load power in the previous time period, it indicates that the load on the current working bus has increased, requiring more power to be supplied and consumed. If the power supplied by the external power supply or the power generated by the distributed power supply remains unchanged, a power imbalance will occur in the current working bus, causing the bus voltage to change.

[0151] In this case, in response to determining that the energy storage capacity of the DC backup power module in the current time period is greater than the energy backup capacity, it indicates that there is surplus energy in the DC backup power module. The DC backup power module can be controlled to release energy, thereby adjusting the voltage of the current working bus to maintain a stable bus voltage.

[0152] In response to determining that the power storage capacity of the DC backup power module in the current time period is less than the power reserve capacity, indicating that the DC backup power module is short of power, the DC backup power module may be controlled to store power.

[0153] The process of the DC backup power module releasing electrical energy is also affected by the battery health status. The battery health status (SOH) refers to the ratio of the energy released by the battery from a fully charged state to a cut-off voltage at a certain rate under standard conditions to its corresponding nominal rated energy. According to the battery health status of the battery submodule in the DC backup power module, the maximum discharge capacity of the DC backup power module in the current time period can be determined. In response to determining that the energy release capacity of the DC backup power module is less than the maximum discharge capacity, the amount of electrical energy that the DC backup power module can actually provide is the energy release capacity; in response to determining that the energy release capacity of the DC backup power module is greater than the maximum discharge capacity, the amount of electrical energy that the DC backup power module can actually provide is the maximum discharge capacity. Through the above mechanism, the battery can be effectively protected to avoid excessive discharge of the battery, damage to the electrode active material, loss of reaction ability, and shortening of the battery life.

[0154] The power supply and backup system provided in the embodiment of the present application can use the DC backup power module to adjust the voltage of the current working bus using surplus power while meeting the power backup requirements when the load power of the current working bus changes in the current time period, so that the bus voltage remains stable, thereby ensuring the normal operation of the equipment in each server cabinet of the data center.

[0155] In the above embodiment, the power provided by the first and second external power supplies can be configured based on the rated power of all server cabinets, with a certain power margin reserved. There is no need to configure the power supply equipment on the corresponding power supply branches based on the maximum peak power of all server cabinets simultaneously. Because the configured power is too large, and the load power is typically significantly lower than the peak power, the equipment on the power supply link typically operates in a lightly loaded state, resulting in very low efficiency. When peak power occurs within each server cabinet, the capacity of the external power bus decreases, causing the power bus voltage to drop. At this time, the DC backup power module in each cabinet automatically adjusts to the bus voltage to provide the required peak power.

[0156] In some embodiments, the system further includes an AC switching module and a DC switching module; the AC switching module is connected to the AC bus and the power supply module, and the AC switching module is used to conduct the circuit between the AC bus and the power supply module in response to determining that the AC bus is supplying power; the DC switching module is connected to the DC bus and the power supply module, and the DC switching module is used to conduct the circuit between the DC bus and the power supply module in response to determining that the DC bus is supplying power.

[0157] In one or more embodiments, FIG6 is another structural schematic diagram of the power supply and backup system provided by the present application. As shown in FIG6 , the power supply and backup system further includes an AC switching module 191 and a DC switching module 192. The AC switching module is connected to the AC bus and the power supply module. The AC switching module is configured to connect the circuit between the AC bus and the power supply module in response to determining that the AC bus is supplying power; and disconnect the circuit between the AC bus and the power supply module in response to determining that the AC bus is not supplying power. The DC switching module is connected to the DC bus and the power supply module. The DC switching module is configured to connect the circuit between the DC bus and the power supply module in response to determining that the DC bus is supplying power; and disconnect the circuit between the DC bus and the power supply module in response to determining that the DC bus is supplying power.

[0158] The number of server cabinets working on the DC bus can be adjusted in real time according to the power generation power of the distributed power supply, and the remaining server cabinets can work on the AC bus end.

[0159] The power supply and backup system provided in the embodiment of the present application can realize the connection relationship between the switching power supply module and the AC bus or the DC bus through the AC switching module and the DC switching module.

[0160] In the above embodiment, in response to determining that the AC switching module is turned on, the DC switching module is turned off; in response to determining that the DC switching module is turned on, the AC switching module is turned off.

[0161] In one or more embodiments, the AC switching module and the DC switching module can be configured to be interlocked. Specifically, in response to determining that the AC switching module is conducting, the DC switching module is disconnected; and in response to determining that the DC switching module is conducting, the AC switching module is disconnected. In this case, the power-off holdover time in the power supply module needs to be set such that the holdover time is greater than the interlocking switching time between the AC switching device and the DC switching device.

[0162] The number of power supply modules can be set to meet the power requirements of each device in the server cabinet, and a certain number of redundant power supply modules can be set as needed. The first option for all power supply modules is to connect to the AC bus, and the second option is to connect to the DC bus.

[0163] The power supply and backup system provided in the embodiment of the present application can set the AC switching device and the DC switching device to be in an interlocking relationship, so that the server cabinet can select a single bus to operate.

[0164] FIG7 is a flow chart of the backup power supply control method provided in the present application. As shown in FIG7 , the method is applied to the backup power supply system in the above embodiment, including step 710 , step 720 , step 730 and step 740 .

[0165] Step 710: Obtain the generated power of the distributed power source.

[0166] Step 720: In response to determining that the generated power is zero, determine the load power of the backup power system based on the operating power of each device in each server cabinet in the backup power system.

[0167] Step 730: In response to determining that the load power of the backup power system is less than a first preset load power threshold, control the first power input module to be connected to the first external power source, and control the second power input module to be disconnected from the second external power source.

[0168] Step 740: In response to determining that the load power of the backup power system is greater than a second preset load power threshold, control the first power input module to be connected to the first external power supply; control the second power input module to be connected to the second external power supply; and control the power input power of the first power input module to be equal to the power input power of the second power input module.

[0169] In one or more embodiments, the method provided in the embodiments of the present application is performed by a backup power supply control device. This device can be implemented by software, such as a backup power supply control program running in a backup power supply system; or it can be a device that executes the backup power supply control method, such as a mobile terminal, tablet computer, desktop computer, or server.

[0170] The power generated by the distributed power supply can be monitored. If the power generated is zero, it means that the distributed power supply is not providing power. At this time, the power consumed by all loads in the backup power system is provided by the first external power supply or the second external power supply.

[0171] The load power of the power supply and backup system can be determined by summing the operating power of each device in each server cabinet. The first preset load power threshold is the load power of the power supply and backup system under light load conditions; the second preset load power threshold is the load power of the power supply and backup system under full load conditions.

[0172] When the load power of the backup power system is less than a first preset load power threshold, the first external power supply can bear the load power of the backup power system. Considering that the first external power supply does not require inversion and rectification compared to the second external power supply, power loss is relatively low. In this case, the first external power supply can be controlled to connect to the first external power supply, while the second power supply input module can be controlled to disconnect from the second external power supply.

[0173] When the load power of the backup power system is greater than the second preset load power threshold, taking into account the operating efficiency of the entire backup power system, the first external power supply and the second external power supply can each bear half of the load power. At this time, the first power input module can be controlled to be connected to the first external power supply, and the second power input module can be controlled to be connected to the second external power supply, and the power input power of the first power input module can be controlled to be equal to the power input power of the second power input module. The sum of the two power input powers is equal to the load power. In this case, the operating efficiency of the backup power system can be optimized.

[0174] The backup power supply control method provided in the embodiment of the present application flexibly selects the first external power supply and / or the second external power supply for access according to the load power of the backup power supply system when the distributed power supply does not provide electric energy, thereby improving the operating efficiency of the entire backup power supply system.

[0175] In some embodiments, step 710 also includes: in response to determining that the generated power is greater than zero and less than the load power of the backup power system, determining that the power input priority of the third power input module is greater than the power input priority of the first power input module, and the power input priority of the first power input module is greater than the power input priority of the second power input module.

[0176] In one or more embodiments, in response to determining that the generated power is greater than zero and less than the load power of the backup power system, it indicates that the distributed power source can provide a certain amount of power but is insufficient to meet the power demand of the backup power system. In this case, the power supply and distribution system contains both distributed power sources and external power sources to provide power.

[0177] Since the power provided by the distributed power supply is clean energy, and when the external power supply needs to be charged, giving priority to the use of distributed power supply can reduce the electricity cost of the data center and meet environmental protection requirements. It can be determined that the power input priority of the third power input module is greater than the power input priority of the first power input module and the power input priority of the second power input module.

[0178] Since the first external power supply is connected to the AC bus, there is no need to invert and rectify the external power supply, and the power loss is small. Therefore, it can be determined that the power input priority of the first power input module is greater than the power input priority of the second power input module.

[0179] The power supply and backup control method provided in the embodiment of the present application determines the power input priority of the power input modules corresponding to the distributed power supply and the external power supply respectively on the basis of the power provided by the distributed power supply, which can reduce the electricity cost of the data center and meet environmental protection requirements.

[0180] In some embodiments, step 710 also includes: in response to determining that the generated power is greater than the load power of the backup power system, controlling the first power input module to be disconnected from the first external power supply, and controlling the second power input module to be disconnected from the second external power supply; based on the difference between the generated power and the load power, determining the over-generation power of the distributed power source; and storing the electric energy corresponding to the over-generation power in the power storage cabinet in the backup power system.

[0181] In one or more embodiments, when the generated power is greater than the load power of the backup power system, this indicates that the distributed power source has surplus power after meeting the power demand of the backup power system. In this case, the first power input module can be disconnected from the first external power source, and the second power input module can be disconnected from the second external power source, so that the load power of the backup power system is borne by the distributed power source.

[0182] Overgeneration occurs when the generated power of a distributed power source exceeds the load power of the power supply system. The overgeneration power of the distributed power source is determined by the difference between the generated power and the load power. The corresponding energy, or surplus energy, can be determined based on the overgeneration power and the duration of the overgeneration. This surplus energy can be stored in a power storage cabinet within the backup power supply system.

[0183] The power supply and backup control method provided in the embodiment of the present application utilizes an energy storage cabinet to store surplus power when the distributed power source can provide surplus power, thereby improving the utilization rate of distributed clean energy and reducing the electricity cost of the data center.

[0184] In the above embodiment, the electric energy storage cabinet provides energy supply when electricity prices are at their peak and when electricity is insufficient, thereby achieving the effect of shaving peaks and filling valleys, creating profit space for electricity prices, and reducing the electricity costs of the data center.

[0185] In some embodiments, the method further includes: obtaining the generated power of the distributed power source in a preset time period, and the load power of the backup power system in the preset time period; in response to determining that the generated power is greater than the load power, determining the remaining electric energy of the distributed power source based on the difference between the generated power and the load power, and the length of the preset time period; controlling each DC backup power module to store electric energy; the sum of the electric energy storage amounts of each DC backup power module is the remaining electric energy.

[0186] In one or more embodiments, the power generated by the distributed power supply may fluctuate within a relatively short period of time. These power fluctuations generated within a relatively short period of time will cause the bus voltage to fluctuate as well, which will have an adverse impact on the normal operation of the equipment.

[0187] A preset time period can be set, and the length of this time period can be adjusted as needed, such as seconds or minutes. The generated power of the distributed power supply during the preset time period is obtained, as well as the load power of the backup power system during the preset time period. The generated power and load power are compared. If the generated power is greater than the load power, it indicates that the distributed power supply has a surplus of power for a short period of time. The remaining power of the distributed power supply can be calculated by multiplying the difference between the generated power and the load power by the length of the preset time period. Each DC backup power module can be controlled to store energy. The sum of the energy storage capacity of all DC backup power modules is the remaining energy capacity, thereby avoiding power imbalances that may cause bus voltage fluctuations.

[0188] The power supply and backup control method provided in the embodiment of the present application, in response to determining that the short-term generated power of the distributed power source is greater than the short-term load power of the power supply and backup system, controls the DC backup power module to store electric energy and absorb surplus electric energy, thereby avoiding power imbalance and causing bus voltage fluctuations, thereby ensuring the normal operation of various equipment in the data center.

[0189] In some embodiments, the method further includes: in response to determining that the generated power is less than the load power, determining the power shortage value of the distributed power source based on the difference between the load power and the generated power, and the length of a preset time period; controlling each DC backup power module to release power; the sum of the power released by each DC backup power module is the power shortage value.

[0190] In one or more embodiments, if the generated power is less than the load power, this indicates a short-term energy shortage in the distributed power supply. The energy shortage value of the distributed power supply can be calculated by multiplying the difference between the load power and the generated power by the duration of a preset time period. Each DC backup power module can be controlled to release power, with the sum of the energy released by all DC backup power modules being the energy shortage value. This prevents power imbalances that can cause bus voltage fluctuations.

[0191] The power supply and backup control method provided in the embodiment of the present application controls the DC backup power module to release electric energy in response to determining that the short-term generated power of the distributed power source is less than the short-term load power of the power supply and backup system, thereby making up for the insufficient electric energy, avoiding power imbalance, causing bus voltage fluctuations, and ensuring the normal operation of various equipment in the data center.

[0192] FIG8 is a structural diagram of a data center provided by the present application. As shown in FIG8 , the data center 800 includes a power supply and backup system 100 and a server cabinet 200 connected to the power supply and backup system 100. The server cabinet 200 is used for data storage and / or data processing.

[0193] In one or more embodiments, a data center is a system for centrally storing, managing, processing, and distributing data, and typically includes a large number of servers, as well as supporting network equipment and power supply equipment, etc. These servers, network equipment, and power supply equipment, etc. are typically installed in server cabinets.

[0194] A server cabinet can be used to install at least one server. For example, if the server cabinet is a rack, multiple rack-mounted servers can be installed in the server cabinet; if the server cabinet is a blade chassis, multiple blade servers can be installed in the server cabinet; if the server cabinet is a cabinet corresponding to a single server, the server cabinet can be installed with computing devices, storage devices, and network devices corresponding to the server.

[0195] The embodiment of the present application does not specifically limit the number of server cabinets in the data center. The server cabinets can be equipped with power supply modules and DC backup power modules as needed. The embodiment of the present application does not specifically limit the power supply modules and DC backup power modules in the server cabinets.

[0196] Server cabinets are deployed in phases as business volume increases, and the individual devices within each server cabinet (power supply modules and DC backup power modules) are also deployed in phases as business volume increases. In other words, data centers can be modularized based on business needs.

[0197] The data center provided in the embodiment of the present application includes the power supply and backup system in the above embodiment, and the power supply and backup system is connected to the server. Since mutual redundancy of two external power supplies and distributed power supplies is achieved at the power input end of the power supply and backup system, power supply redundancy of the AC bus and the DC bus is achieved within the system. At the same time, a DC backup power module is equipped to achieve power backup, thereby improving the reliability of the power supply of the data center; since the DC backup power module can store the power provided by the distributed power supply on the basis of providing backup power, the utilization rate of distributed clean energy is improved, the efficiency of the power supply of the data center is improved, and the electricity cost of the data center is reduced; since the bus connection device is adopted within the system, the circuit topology is simplified, which facilitates the modification of the input and output line equipment, thereby improving the flexibility and scalability of the power supply of the data center.

[0198] Figure 9 is another structural diagram of the data center provided by this application. As shown in Figure 9, the data center 800 further includes a power storage cabinet 300. The power storage cabinet 300 is connected to the power supply and backup system 100 and is used to store the power provided by the distributed power supply.

[0199] In one or more embodiments, power storage cabinets may also be provided in the data center. The number of power storage cabinets is not specifically limited in the embodiments of the present application.

[0200] Consider the scenario where the total amount of energy provided by distributed power sources is stored in power storage cabinets. In actual operation, in addition to the power storage cabinets, the DC backup power modules in the server cabinets can also participate in storing energy provided by the distributed power sources. This allows the entire data center to store as much energy from the distributed power sources as possible, improving the utilization rate of distributed clean energy, increasing the efficiency of the data center's power supply, and reducing the data center's electricity costs.

[0201] In data centers, the reliability of DC backup power modules is reflected in:

[0202] (1) Compared with UPS in the form of a complete machine, the DC backup power module has a simple circuit topology, relies on busbars for connection, is closer to the power-consuming equipment, and improves equipment-level reliability;

[0203] (2) It can be installed in either a server cabinet or a power storage cabinet, enabling redundancy and mutual support between different cabinets, thus improving cabinet-level reliability;

[0204] (3) Data centers equipped with DC backup power modules and distributed power sources form a distributed DC microgrid. The distributed power source is primarily used to provide power, while the data center is primarily used to consume and store power. For data centers, power sources are diversified and multi-redundant, improving system-level reliability.

[0205] FIG10 is a schematic diagram of the structure of an electronic device provided by the present application. As shown in FIG10 , the electronic device may include: one or more processors 1010, a communication interface 1020, a memory 1030 associated with the one or more processors 1010, and a communication bus 1040. The processor 1010, the communication interface 1020, and the memory 1030 communicate with each other via the communication bus 1040. The processor 1010 may call the computer-readable instructions in the memory 1030 to execute the method in the above embodiment, for example:

[0206] Obtain the generated power of the distributed power source; in response to determining that the generated power is zero, determine the load power of the backup power system based on the operating power of each power supply module in the backup power system; in response to determining that the load power of the backup power system is less than a first preset load power threshold, control the first power input module to be connected to the first external power supply, and control the second power input module to be disconnected from the second external power supply; in response to determining that the load power of the backup power system is greater than a second preset load power threshold, control the power input power of the first power input module to be equal to the power input power of the second power input module.

[0207] In addition, the computer-readable instructions in the above-mentioned memory can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when sold or used as an independent product. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several commands to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0208] The processor in the electronic device provided in the embodiment of the present application can call the computer-readable instructions in the memory to implement the above method. Its implementation method is consistent with the implementation method of the aforementioned method and can achieve the same beneficial effects, which will not be repeated here.

[0209] An embodiment of the present application further provides a computer-readable storage medium having computer-readable instructions stored thereon. When the computer-readable instructions are executed by a processor, the methods provided in the above embodiments are implemented.

[0210] Its implementation method is consistent with the aforementioned method implementation method and can achieve the same beneficial effects, so it will not be repeated here.

[0211] An embodiment of the present application provides a computer program product, including computer-readable instructions, which implement the above method when executed by a processor.

[0212] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units. That is, they may be located in one place or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Persons of ordinary skill in the art will be able to understand and implement the present invention without inventive effort.

[0213] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a general hardware platform, or of course, by hardware. Based on this understanding, the essence of the above technical solution or the part that contributes to the existing technology can be embodied in the form of a software product. The computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or certain parts of the embodiment.

[0214] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A power backup system, characterized in that, Applied to a data center, including a first power input module, a second power input module, a third power input module, an AC bus, a DC bus, a DC backup power module, and a power supply module; The first power input module is connected to the AC bus, and the first power input module is used to convert the input first external power into the AC power required by the AC bus; The second power input module is connected to the DC bus, and the second power input module is used to convert the input second external power into the first DC power required by the DC bus; The third power input module is connected to the DC bus, and the third power input module is used to convert the input distributed power into the second DC power required by the DC bus; The DC backup power module is connected to the DC bus, and the DC backup power module is used to provide a backup DC power to the DC bus and store the electric energy provided by the distributed power; and The power supply module is respectively connected to the AC bus and the DC bus, and the power supply module is used to convert at least one of the AC power, the first DC power, the second DC power, and the backup DC power into the working power of each device in the server cabinet.

2. The power supply backup system according to claim 1, characterized in that, A plurality of the power supply modules are redundantly provided in the server cabinet; the plurality of the power supply modules include a first power supply module and a second power supply module; The first power supply module is connected to the AC bus, and the first power supply module is used to convert the AC power into the working power of each device in the server cabinet; and The second power supply module is connected to the DC bus, and the second power supply module is used to convert at least one of the first DC power, the second DC power, and the backup DC power into the working power of each device in the server cabinet.

3. The power supply backup system according to claim 2, characterized in that, A plurality of device power buses are provided in the server cabinet; the voltage levels of each device power bus are different; The device power bus is used to connect the power output end of the power supply module and the power input end of each device in the server cabinet, and is used to provide the working power to each device.

4. The power supply backup system according to claim 1, characterized in that, The DC backup power module includes a bidirectional DC conversion sub-module and a battery sub-module connected in sequence; The bidirectional DC conversion sub-module is connected to the DC bus, and the bidirectional DC conversion sub-module is used to convert the power voltage of the DC bus into the battery voltage of the battery sub-module in response to determining that the battery sub-module is in a charging state, and the bidirectional DC conversion sub-module is used to convert the battery voltage of the battery sub-module into the power voltage of the DC bus in response to determining that the battery sub-module is in a discharging state.

5. The power supply and backup system according to claim 4, characterized in that, The DC backup power module is further used for: Obtaining the bus voltage of the DC bus; In response to determining that the bus voltage is greater than a preset voltage target value, controlling the battery sub-module to store the electric energy provided by the DC bus, so that the battery sub-module is in a charging state; Or In response to determining that the bus voltage is less than the preset voltage target value, control the battery sub-module to supply the stored electric energy to the DC bus, so that the battery sub-module is in a discharging state.

6. The power supply and backup power system according to claim 5, characterized in that, The DC backup power module is further configured to: Obtain the power generation power of the distributed power source connected to the third power input module, and the working states of each DC backup power module; and In response to determining that the power generation power of the distributed power source is greater than a preset power threshold or the number of DC backup power modules with an abnormal working state is greater than a preset threshold, adjust the preset voltage target value.

7. The power supply backup system according to claim 4, wherein The DC backup power module is disposed in the server cabinet and / or the power energy storage cabinet.

8. The power supply backup system according to claim 7, wherein When the DC backup power module is disposed in the server cabinet, the number of the DC backup power modules is determined based on the peak power of each device in the server cabinet, the required backup time corresponding to the server cabinet, and the battery capacity of the battery sub-module in each DC backup power module.

9. The power supply backup system according to claim 7, wherein, When the DC backup power module is disposed in the power energy storage cabinet, the number of the DC backup power modules is determined based on the total amount of electric energy provided by the distributed power source, the number of the power energy storage cabinets, and the battery capacity of the battery sub-module in each DC backup power module.

10. The power supply backup system according to claim 1, wherein The system further includes a backup power control module; The backup power control module is connected to each DC backup power module. The backup power control module is configured to control the electric energy storage of each DC backup power module based on the load power of the current working bus; the current working bus includes the AC bus and / or the DC bus.

11. The power supply backup system according to claim 10, characterized in that, The backup power control module is configured to: Obtain the load power of the current working bus in the current time period; In response to determining that the load power in the current time period is greater than the load power in the previous time period, compare the electric energy storage amount of each DC backup power module in the current time period with the electric energy backup amount of each DC backup power module; In response to determining that the electric energy storage amount is greater than the electric energy backup amount, control the DC backup power module to release electric energy to adjust the voltage of the current working bus; Or In response to determining that the electric energy storage amount is less than the electric energy backup amount, control the DC backup power module to store electric energy.

12. The power supply backup system according to claim 1, wherein The system further includes an AC switching module and a DC switching module; The AC switching module is connected to the AC bus and the power supply module. The AC switching module is configured to conduct the circuit between the AC bus and the power supply module in response to determining that the AC bus supplies power; And The DC switching module is connected to the DC bus and the power supply module. The DC switching module is configured to conduct the circuit between the DC bus and the power supply module in response to determining that the DC bus supplies power.

13. The power supply and backup power system according to claim 12, wherein In response to determining that the AC switching module is conducted, the DC switching module is disconnected; and In response to determining that the DC switching module is conducted, the AC switching module is disconnected.

14. A backup power supply control method, characterized in that, Applied to the power supply and backup power system according to any one of claims 1 to 13, including: Obtain the power generation power of the distributed power source; In response to determining that the generated power is zero, based on the operating power of each device in each server cabinet of the power supply and backup power system, determine the load power of the power supply and backup power system; In response to determining that the load power of the power supply and backup power system is less than the first preset load power threshold, control the first power input module to connect to the first external power supply; control the second power input module to disconnect from the second external power supply; or In response to determining that the load power of the power supply and backup power system is greater than the second preset load power threshold, control the first power input module to connect to the first external power supply; control the second power input module to connect to the second external power supply; control the power input power of the first power input module to be equal to the power input power of the second power input module.

15. The power supply control method according to claim 14, wherein After obtaining the generated power of the distributed power source, it further includes: In response to determining that the generated power is greater than zero and less than the load power of the power supply and backup power system, determine that the power input priority of the third power input module is greater than the power input priority of the first power input module, and the power input priority of the first power input module is greater than the power input priority of the second power input module.

16. The power supply backup control method according to claim 14, wherein After obtaining the generated power of the distributed power source, it further includes: In response to determining that the generated power is greater than the load power of the power supply and backup power system, control the first power input module to disconnect from the first external power supply, and control the second power input module to disconnect from the second external power supply; Based on the difference between the generated power and the load power, determine the excess power generation of the distributed power source; and Store the electric energy corresponding to the excess power generation in the power storage cabinet of the power supply and backup power system.

17. The power supply backup control method according to claim 15 or 16, characterized in that, The method further includes: Obtain the generated power of the distributed power source in a preset time period, and the load power of the power supply and backup power system in the preset time period; In response to determining that the generated power is greater than the load power, based on the difference between the generated power and the load power, and the duration of the preset time period, determine the remaining electric energy of the distributed power source; and Control each DC backup power module to store electric energy; the sum of the electric energy storage amounts of each DC backup power module is the remaining electric energy.

18. The power supply control method according to claim 17, wherein After obtaining the generated power of the distributed power source in a preset time period, and the load power of the power supply and backup power system in the preset time period, it further includes: In response to determining that the generated power is less than the load power, based on the difference between the load power and the generated power, and the duration of the preset time period, determine the power shortage value of the distributed power source; and Control each DC backup power module to release electric energy; the sum of the electric energy release amounts of each DC backup power module is the power shortage value.

19. A data center, characterized in that, It includes the power supply and backup power system according to any one of claims 1 to 13, and a server cabinet connected to the power supply and backup power system; The server cabinet is used for data storage and / or data processing.

20. The data center according to claim 19, characterized in that, It further includes a power storage cabinet; The power storage cabinet is connected to the power supply and backup power system, and the power storage cabinet is used for storing the electric energy provided by the distributed power source.

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