Data center power supply system and power supply control method and device and data center

Abstract

The disclosure provides a data center power supply system and a power supply control method and device and a data center, relates to the technical field of computers, and particularly relates to the field of big data. The specific implementation scheme is as follows: the data center power supply system comprises a power supply module, at least one server connected to an output end, and at least one energy storage module comprising a bidirectional direct current converter, a battery pack loop and a battery management unit. The first side port of the bidirectional direct current converter is connected to the output end of the power supply module, the second side port of the bidirectional direct current converter is connected to the battery pack loop, and the control end of the bidirectional direct current converter is connected to the battery management unit. The battery management unit is used for controlling the current flow directions of the first side port and the second side port of the bidirectional direct current converter, so as to charge the battery pack loop or make the battery pack loop discharge to the server. In the power supply system, the energy storage module has low cost and flexible configuration, and can meet the diversity requirements of the data center.

Description

Technical Field

[0001] This disclosure relates to the field of computer technology, and in particular to the field of big data. Background Technology

[0002] Data centers are the core areas for information integration, typically housing important storage or computing resources, and therefore require a sufficient power supply.

[0003] In existing technologies, data center power supply systems suffer from problems such as large footprint, high cost, inflexibility, and difficulty in expansion, making it difficult to meet the complex and ever-changing needs of data centers. Summary of the Invention

[0004] This disclosure provides a data center power supply system, power supply control method, device, and data center.

[0005] According to a first aspect of this disclosure, a data center power supply system is provided, comprising:

[0006] The power module includes an input terminal and an output terminal, with the input terminal used to connect to the input power supply;

[0007] At least one server is connected to the output end;

[0008] At least one energy storage module includes a bidirectional DC-DC converter, a battery circuit, and a battery management unit. The first port of the bidirectional DC-DC converter is connected to the output terminal, the second port of the bidirectional DC-DC converter is connected to the battery circuit, and the control terminal of the bidirectional DC-DC converter is connected to the battery management unit. The battery management unit is used to control the current flow direction of the first and second ports of the bidirectional DC-DC converter to charge the battery circuit or to discharge the battery circuit to the server.

[0009] According to a second aspect of this disclosure, a power supply control method for a data center power supply system is provided. The power supply system includes a power module, at least one server, and at least one energy storage module. The power module includes an input terminal and an output terminal. The input terminal is used to connect to an input power source. The at least one server is connected to the output terminal, and the at least one energy storage module is connected to the output terminal. The power supply control method includes:

[0010] Obtain the voltage at the output terminal;

[0011] When the output voltage is in the first range and the energy storage module's charge is less than 100%, the system controls the charging of the energy storage module.

[0012] The voltage in the first interval is the voltage output by the output terminal during the first preset time period.

[0013] According to a third aspect of this disclosure, a power supply control method for a data center power supply system is provided. The power supply system includes a power module, at least one server, and at least one energy storage module. The power module includes an input terminal and an output terminal. The input terminal is used to connect to an input power source. At least one server is connected to the output terminal, and at least one energy storage module is connected to the output terminal. The power supply method includes:

[0014] During the first preset time period, the control power module provides a first interval voltage to the output terminal to provide the operating voltage to the server.

[0015] According to a fourth aspect of this disclosure, a power supply control device for a data center power supply system is provided, including a control circuit for implementing the power supply control method in any embodiment of this disclosure.

[0016] According to a fifth aspect of this disclosure, a control device is provided, comprising:

[0017] At least one processor; and

[0018] A memory that is communicatively connected to at least one processor; wherein,

[0019] The memory stores instructions that can be executed by at least one processor to enable the at least one processor to perform the power supply control method in any embodiment of this disclosure.

[0020] According to a sixth aspect of this disclosure, a data center is provided, comprising at least one of the following:

[0021] Power supply system in any embodiment of this disclosure;

[0022] Power supply control device in any embodiment of this disclosure;

[0023] Control device in any embodiment of this disclosure.

[0024] In the power supply system of this disclosure embodiment, the energy storage module is no longer high voltage and high power, but low DC voltage and low power, the same as the server. The energy storage module is low cost, flexible in configuration, convenient in operation and maintenance, and has a small fault impact range. Such a power supply system can not only replace the traditional uninterruptible power supply, but also simplify the power supply architecture and improve the power supply efficiency, and can meet the needs of data centers for flexible configuration, prefabrication, and diverse configuration.

[0025] The power supply control method in this embodiment can reduce electricity costs and energy storage costs.

[0026] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this disclosure, nor is it intended to limit the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description

[0027] The accompanying drawings are provided to better understand this solution and do not constitute a limitation of this disclosure. Wherein:

[0028] Figure 1a This is a schematic diagram of a power supply architecture for a 12V data center.

[0029] Figure 1b A schematic diagram showing the relationship between the 12V server power supply topology and the server rack.

[0030] Figure 2a This is a schematic diagram of a power supply architecture for a 48V data center.

[0031] Figure 2b A schematic diagram showing the relationship between the 48V server power supply topology and the server rack.

[0032] Figure 3 This is a schematic diagram of a power supply architecture for a data center that includes an energy storage system.

[0033] Figure 4 This is a schematic diagram of the architecture of a data center power supply system in one embodiment of the present disclosure;

[0034] Figure 5 This is a schematic diagram of the structure of a bidirectional DC-DC converter;

[0035] Figure 6 The first embodiment of this disclosure is a schematic diagram of the connection architecture between the server and the energy storage module in the power supply system.

[0036] Figure 7 This is a schematic diagram of the architecture of a 12V server rack;

[0037] Figure 8 To Figure 7 The diagram shows the power supply system architecture after the architecture modification.

[0038] Figure 9 A schematic diagram showing the relationship between mains electricity prices and time is provided, illustrating the time periods for off-peak, flat, and peak electricity prices.

[0039] Figure 10 This is a schematic diagram showing the relationship between the voltage at the output terminal of the power module and time.

[0040] Figure 11 This is a schematic diagram illustrating the relationship between the state of an energy storage module and time.

[0041] Figure 12 This is a block diagram of a control device used to implement the power supply control method of the embodiments of this disclosure. Detailed Implementation

[0042] The exemplary embodiments of this disclosure are described below with reference to the accompanying drawings, including various details of the embodiments to aid understanding, and should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this disclosure. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.

[0043] Data centers typically use UPS (Uninterruptible Power Supply) / HVDC (Uninterruptible Power Supply, also known as High Voltage DC) + lead-acid batteries as backup power for data center servers, or UPS / HVDC + lithium batteries as backup power for data center servers.

[0044] Servers typically operate on a 12V power supply, with a single server rack generally operating below 10kW. However, due to the continuous increase in server power density, the power supply voltage has now risen to 48V, and the power density has increased to tens of kW.

[0045] Figure 1a This is a schematic diagram of a power supply architecture for a 12V data center. Figure 1b This is a schematic diagram showing the relationship between the 12V server power supply topology and the server rack. Figure 1a As shown, mains power provides uninterruptible power to the data center via a UPS / HVDC power supply and batteries. Then, the 220V AC or 240V DC power is converted to 12V DC by a power supply unit (PSU) to power the 12V servers. The batteries are typically lead-acid, but lithium batteries can also be used. Figure 1b As shown, the 12V server rack contains a power supply unit (PSU) and multiple 12V servers, each of which is connected to the output of the power supply unit.

[0046] Figure 2a This is a schematic diagram of a power supply architecture for a 48V data center. Figure 2b This is a schematic diagram showing the relationship between the 48V server power supply topology and the server rack. Figure 2a As shown, mains power provides uninterruptible power to the data center via a UPS / HVDC power supply and batteries. Then, the 220V AC or 240V DC power is converted to 48V DC by a power supply unit (PSU) to power the 48V servers. The batteries are typically lead-acid, but lithium batteries can also be used. Figure 2b As shown, the 48V server rack contains a power supply unit (PSU) and multiple 48V servers, each of which is connected to the output of the power supply unit.

[0047] With the widening price gap between peak and off-peak periods across various regions, electricity-consuming enterprises are constructing energy storage systems. Data centers can leverage energy storage to both assist the power grid in peak shaving and valley filling, and also profit from price arbitrage. Currently, data centers are actively exploring energy storage solutions. However, current energy storage solutions are primarily large-scale, requiring dedicated floor space and posing significant challenges to the overall power supply architecture of data centers. This is especially true for existing data centers, where limited space and difficult power supply architecture modifications hinder energy storage implementation.

[0048] Figure 3 This is a schematic diagram of a power supply architecture for a data center that includes an energy storage system. Based on... Figure 1a and Figure 2a The power supply architecture shown can be adopted as follows: Figure 3 The power supply architecture shown includes an energy storage system. In some projects, the UPS / HVDC and its associated batteries can be omitted. The energy storage system is a conventional large-scale system with high-voltage batteries and a large footprint, requiring additional building space. Retrofitting this system necessitates a complete power outage of the entire data center, resulting in a lengthy construction process, high costs, and significant economic losses.

[0049] therefore, Figure 3 The energy storage system shown has a large footprint, increasing construction costs and posing significant challenges for data center retrofitting. As a high-power, high-voltage system, it utilizes high-power devices, resulting in high overall system costs and substantial workloads for construction, installation, and maintenance. Furthermore, the system is inflexible, difficult to expand, and struggles to meet the complex and ever-changing demands of data centers.

[0050] Figure 4 This is a schematic diagram of the architecture of a data center power supply system according to one embodiment of the present disclosure. In one implementation, such as Figure 4 As shown, the data center power supply system includes a power module 10, at least one server 20, and at least one energy storage module 30. The power module 10 includes an input terminal 11 and an output terminal 12. The input terminal 11 is used to connect to an input power source, such as AC mains power. At least one server 20 is connected to the output terminal 12 of the power module 10.

[0051] The energy storage module 30 includes a bidirectional DC-DC converter 31, a battery pack circuit 32, and a battery management unit 33. The first side port 311 of the bidirectional DC-DC converter 31 is connected to the output terminal 12, the second side port 312 of the bidirectional DC-DC converter 31 is connected to the battery pack circuit 32, and the control terminal 313 of the bidirectional DC-DC converter 31 is connected to the battery management unit 33. The battery management unit 33 is used to control the current flow direction of the first side port 311 and the second side port 312 of the bidirectional DC-DC converter 31, so as to charge the battery pack circuit 32 or discharge the battery pack circuit 32 to the server 20.

[0052] In the data center power supply system of this embodiment, the first side port 311 of the bidirectional DC-DC converter 31 in the energy storage module 30 is connected to the output terminal 12, and the second side port 312 of the bidirectional DC-DC converter 31 is connected to the battery pack circuit 32. The battery management unit 33 is used to control the current flow direction of the first side port 311 and the second side port 312 of the bidirectional DC-DC converter 31 to realize the charging and discharging of the energy storage module.

[0053] In the power supply system of this embodiment, both the energy storage module 30 and the server 20 are connected to the output terminal 12 of the power module 10. Thus, the charging voltage and discharging voltage of the energy storage module 30 are comparable to the operating voltage of the server 20. The energy storage module 30 is no longer high voltage and high power, but the same DC low voltage and low power as the server 20. The energy storage module is low in cost, flexible in configuration, convenient in operation and maintenance, and has a small impact range on failure. Such a power supply system can not only replace the traditional uninterruptible power supply, but also simplify the power supply architecture and improve the power supply efficiency, and can meet the needs of data centers for flexible configuration, prefabrication, and diverse configuration.

[0054] Figure 5 This is a schematic diagram of a bidirectional DC-DC converter. For example, as shown... Figure 5 As shown, the bidirectional DC-DC converter 31 may include a first-side port 311, a second-side port 312, and a control terminal 313. The bidirectional DC-DC converter 31 may include a charging circuit and a discharging circuit, both connected between the first-side port 311 and the second-side port 312. The battery management unit 33 can control the charging circuit and the discharging circuit to turn on or off through the control terminal 313 of the bidirectional DC-DC converter 31. When the battery management unit 33 controls the charging circuit to turn on and the discharging circuit to turn off, the first-side port 311 is connected to the second-side port 312 through the charging circuit, and current can flow from the first-side port 311 to the second-side port 312. The voltage at the output terminal 12 of the power module 10 can charge the battery pack circuit 32 through the bidirectional DC-DC converter 31. When the battery management unit 33 controls the discharge circuit to be turned on and the charging circuit to be turned off, the first side port 311 is connected to the second side port 312 through the discharge circuit. Current can flow from the second side port 312 to the first side port 311. The battery pack circuit 32 can discharge through the bidirectional DC-DC converter 31 to provide operating voltage to the server 20.

[0055] For example, the battery management unit 33 can also control both the charging circuit and the discharging circuit to be turned off, so that the first side port 311 and the second side port 312 are disconnected, and the energy storage module 30 neither charges nor discharges.

[0056] like Figure 4As shown, the battery pack circuit 32 may include a lithium battery pack 321, and the battery management unit 33 is also used to collect the status parameters of the lithium battery pack 321. By collecting the status parameters of the lithium battery pack 321, the battery management unit 33 can monitor the status of the lithium battery pack 321, which is beneficial for the operation and maintenance of the battery pack circuit 32 and avoids the occurrence of danger.

[0057] For example, the lithium battery pack 321 may include multiple lithium battery cells, which can be connected in parallel to provide sufficient discharge current. Each lithium battery cell may include multiple individual lithium battery cells, which can be connected in series to achieve a corresponding voltage. The number of lithium battery cells connected in parallel in the lithium battery pack 321 can be set as needed, as can the number of individual lithium battery cells connected in series within the lithium battery cells.

[0058] like Figure 4 As shown, the state parameters of the lithium battery pack 321 may include voltage, current, temperature, etc. The battery pack circuit 32 may also include a fuse 322, a current detection device 323, etc., which can be connected in series in the battery pack circuit 32. The battery management unit 33 can be connected to the current detection device 323 so that the battery management unit 33 can collect the current of the lithium battery pack 321 through the current detection device 323. The fuse 322 can provide overcurrent protection for the battery pack circuit 32.

[0059] For example, the battery management unit 33 may also be connected to the second-side port 312 of the bidirectional DC-DC converter 31 in order to obtain the required operating voltage from the bidirectional DC-DC converter 31.

[0060] In one embodiment, the power supply system may further include a status indication module 40, which may be connected to the battery management unit 33. The battery management unit is also used to control the status indication module 40 to indicate the status according to the status parameters of the lithium battery pack 321.

[0061] The status indication module 40 may include an alarm, a fault indicator light, a power indicator light, and a working status indicator light. When the battery management unit 33 determines that the lithium battery pack 321 is faulty based on its status parameters, it can control the alarm to sound and the fault indicator light to illuminate, thus alerting maintenance personnel. The battery management unit 33 can collect the power parameters of the lithium battery pack 321 and control the corresponding power indicator light to illuminate, displaying the power level of the lithium battery pack 321. The battery management unit 33 can control the working status indicator light to illuminate, displaying the working status of the lithium battery pack.

[0062] In one implementation, such as Figure 4As shown, the output terminal 12 of the power module 10 is connected to the server 20 via the power bus 50. That is, the output terminal of the power module 10 is connected to the power bus 50, and at least one server 20 is connected to the power bus 50. The power supply system may also include a hot-swappable connector 60, which may include a pair of power pins. The first-side port 311 of the bidirectional DC-DC converter 31 is connected to the power bus 50 via the pair of power pins of the hot-swappable connector 60.

[0063] It should be noted that the power bus 50 may include a positive power bus 51 and a negative power bus 52. The positive power bus 51 is connected to the positive terminal of the output terminal 12, and the negative power bus 52 is connected to the negative terminal of the output terminal 12. The positive terminal of the power input terminal of the server 20 is connected to the positive power bus 51, and the negative terminal of the power input terminal of the server 20 is connected to the negative power bus 52. A pair of power pins ("1" and "2") of the hot-swappable connector 60 can be connected to the positive power bus 51 and the negative power bus 52, respectively.

[0064] The first port 311 of the bidirectional DC-DC converter 31 is connected to the power bus 50 via a pair of power pins of the hot-swappable connector 60. Therefore, when maintenance is required on a single energy storage module 30, it is only necessary to disconnect the male and female connectors of the hot-swappable connector 60 to detach the energy storage module 30 from the power supply system, facilitating maintenance of individual energy storage modules 30. Furthermore, by using a standardized hot-swappable connector, the power supply system can connect energy storage modules from different manufacturers, providing convenience for energy storage module configuration.

[0065] In one implementation, such as Figure 4 As shown, the hot-swappable connector 60 may include a first connector 61 and a second connector 62 that are interlocked. The first connector 61 is connected to the power bus 50, and the second connector 62 is connected to the energy storage module 30. A pair of power pins 1a and 2a of the first connector 61 are connected to the positive power bus 51 and the negative power bus 52, respectively, and a pair of power pins 1b and 2b of the second connector 62 are connected to the first side port 311 of the bidirectional DC-DC converter 31, respectively. The hot-swappable connector 60 may also include a pair of control pins 3a and 4a. The pair of control pins 3a and 4a of the first connector 61 are shorted together by a jumper wire, and the pair of control pins 3b and 4b of the second connector 62 are both connected to the battery management unit 33. Exemplarily, the pair of control pins 3b and 4b of the second connector 62 may be connected to the control interface of the battery management unit 33. The battery management unit 33 is also used to turn on the bidirectional DC-DC converter 31 in a current-limiting mode when the second connector 62 is plugged into the first connector 61.

[0066] It should be noted that when the second connector 62 is not connected to the first connector 61, the pair of control pins 3b and 4b of the second connector 62 are in an open state, which makes the control interface of the battery management unit 33 in an open state. When the second connector 62 is connected to the first connector 61, the pair of control pins 3b and 4b of the second connector 62 are connected to the pair of control pins 3a and 4a of the first connector 61, respectively. Since the control pins 3a and 4a are shorted by jumpers, the pair of control pins 3b and 4b of the second connector 62 are connected, which causes the control interface of the battery management unit 33 to change from an open state to a connected state. This change in state will trigger the battery management unit 33, causing the battery management unit 33 to start the bidirectional DC-DC converter 31 through the current limiting mode.

[0067] In this manner, when the second connector 62 is plugged into the first connector 61, the battery management unit 33 turns on the bidirectional DC-DC converter 31 through the current limiting mode, so that the current of the bidirectional DC-DC converter 31 gradually increases to the operating current, avoiding the sudden increase of the current of the bidirectional DC-DC converter 31 to the operating current, thereby avoiding large current surges and avoiding the impact of the bidirectional DC-DC converter being turned on instantaneously on the circuit.

[0068] In one embodiment, the battery management unit 33 is also used to shut down the bidirectional DC-DC converter 31 in a current-limiting mode when the second connector 62 is disconnected from the first connector 61.

[0069] It should be noted that when the second connector 62 is plugged into the first connector 61, the control interface of the battery management unit 33 is in a connected state. When the second connector 62 is disconnected from the first connector 61, the control interface of the battery management unit 33 changes from a connected state to a disconnected state. This state change triggers the battery management unit 33, causing it to shut down the bidirectional DC-DC converter 31 through current limiting mode. In this way, when the second connector 62 is disconnected from the first connector 61, the current of the bidirectional DC-DC converter 31 gradually decreases, avoiding the current surge caused by a sudden drop in the current of the bidirectional DC-DC converter 31 to 0, and avoiding the impact of the instantaneous disconnection of the bidirectional DC-DC converter on the circuit.

[0070] In one embodiment, the first connector 61 can be a female connector, and the second connector 62 can be a male connector. In another embodiment, the first connector 61 can be a male connector, and the second connector 62 can be a female connector.

[0071] In one embodiment, the energy storage module 30 can be communicatively connected to the power supply module 10.

[0072] In one embodiment, the battery management unit 33 can also be connected to the output terminal of the power module 10 to collect the voltage of the output terminal of the power module 10, so that the battery management unit 33 can control the charging or discharging of the energy storage module 30 according to the voltage of the output terminal of the power module 10.

[0073] Figure 6 This disclosure provides a schematic diagram of the connection architecture between the server and the energy storage module in an embodiment of the power supply system. In one implementation, as shown... Figure 6 As shown, the number of energy storage modules 30 is equal to or greater than the number of servers 20, and each server 20 has at least one corresponding energy storage module. For example, the number of servers 20 can be N, and the number of energy storage modules 30 can be N+M. The N energy storage modules 30 can correspond one-to-one with the N servers 20, and the M energy storage modules 30 can serve as backup energy storage modules. M is a positive integer greater than or equal to 1.

[0074] In one implementation, the server 20 can operate at a DC voltage of 48V. Correspondingly, the power module 10 can output a DC voltage equivalent to 48V, and the energy storage module 30 can discharge at a DC voltage of 48V.

[0075] Understandably, in existing technologies, servers are typically powered by 12V DC, and a server rack generally operates at less than 10kW. However, due to the continuous increase in server power density, the power supply voltage has risen to 48V, and the power density has increased to tens of kW. In this embodiment, the energy storage module 30 discharges at 48V DC, which is beneficial for establishing a 48V server ecosystem and can be applied to data centers based on 48V servers.

[0076] Figure 7 This is a schematic diagram of the architecture of a 12V server rack. Figure 7 As shown, there are 10 12V server racks, and each 12V server rack has a power of 10kW.

[0077] Figure 8 To Figure 7 The diagram shows the power supply system architecture after the modification. Figure 8 As shown, due to Figure 7 The total power supply capacity is 100kW, which only needs to be converted into five 20kW 48V server racks. Each of the five 48V server racks is equipped with a 48V energy storage rack.

[0078] Compared to Figure 7 The architecture shown Figure 8The data center power supply system shown can provide not only sufficient power for server racks within the same space, but also the same number of energy storage racks, eliminating the need for additional space for energy storage racks.

[0079] This disclosure also provides a power supply control method for a data center power supply system. For example... Figure 4 As shown, the power supply system may include a power module 10, at least one server 20, and at least one energy storage module 30. The power module 10 includes an input terminal 11 and an output terminal 12. The input terminal 11 is used to connect to an input power source. At least one server 20 is connected to the output terminal 12, and at least one energy storage module 30 is connected to the output terminal 12. The power supply control method may include:

[0080] During the first preset time period, the control power module 10 provides a first interval voltage to the output terminal 12 to provide the operating voltage to the server 20.

[0081] It should be noted that grid electricity prices are divided into off-peak, flat, and peak periods. During peak periods, grid electricity prices are relatively high; during flat periods, prices are lower than during peak periods; during off-peak periods, prices are lower than during flat periods; and during off-peak periods, prices are the lowest. These off-peak, flat, and peak periods can be set according to a 24-hour timeframe. For example, peak periods could include 10:00-12:00 and 14:00-19:00; flat periods could include 8:00-10:00, 12:00-14:00, and 19:00-24:00; and off-peak periods could include 00:00-8:00.

[0082] The first preset time period can be set to a low or normal range for mains electricity prices, resulting in lower mains electricity prices during this period. During this first preset time period, mains electricity supplies voltage to the server 20 via the power module 10, reducing electricity costs. Furthermore, during this first preset time period, the energy storage module can also be charged, allowing it to store electricity when mains electricity prices are low, thus reducing energy storage costs.

[0083] In one embodiment, the power supply control method may further include: during a second preset time period, controlling the power supply module 10 to provide a second interval voltage to the output terminal 12, wherein the second interval voltage is less than the first interval voltage.

[0084] The second preset time period can be set to the peak period of the mains electricity price, resulting in a higher mains electricity price during this period. During this second preset time period, the control power module 10 provides a second range voltage to the output terminal 12, which is lower than the first range voltage. During the second preset time period, when the energy storage module 30 is discharging, it provides a third range voltage to the server 20 for its operation, instead of relying on the power module to provide operating voltage. When the energy storage module 30 stops discharging, the output terminal of the power module 10 can provide the second range voltage to the server 20 for its operation, thereby reducing the mains electricity usage time and lowering electricity costs.

[0085] The first preset time period is set to the off-peak or flat period of the grid electricity price, and the second preset time period is set to the peak period of the grid electricity price. Therefore, the time of the first preset time period and the time of the second preset time period can be specifically determined.

[0086] It should be noted that the specific voltage ranges of the first, second, and third voltage ranges can be set according to the nominal operating voltage of the server 20. For example, if the nominal operating voltage of the server 20 is 48V DC, the first voltage range can be 47.8V-48.2V DC, for example, 48V; the second voltage range can be 46.8V-47.2V DC, for example, 47V; and the third voltage range can be 47.3V-47.7V DC, for example, 47.5V.

[0087] The power supply control method for the data center power supply system of this disclosure can be applied to the data center power supply system in any embodiment of this disclosure.

[0088] The power supply control method in this embodiment provides the server with operating voltage from the mains power through the power module during off-peak and / or flat periods of mains power prices, while simultaneously controlling the charging of the energy storage module, which can reduce the server's electricity and energy storage costs. During peak periods of mains power prices, the energy storage module provides the server with operating voltage, reducing the time spent using mains power and further reducing electricity costs.

[0089] In addition, since the off-peak, flat, and peak periods of the mains electricity price can be specifically determined, the first preset time stage and the second preset time stage can also be specifically determined. Thus, the first preset time stage and the second preset time stage can be set for the power module, eliminating the need for communication between the power module and the energy storage module and improving control efficiency.

[0090] This disclosure also provides a power supply control method for a data center power supply system. For example... Figure 4As shown, the power supply system may include a power module 10, at least one server 20, and at least one energy storage module 30. The power module 10 includes an input terminal 11 and an output terminal 12. The input terminal 11 is used to connect to an input power source. At least one server 20 is connected to the output terminal 12, and at least one energy storage module 30 is connected to the output terminal 12. The power supply control method may include:

[0091] Obtain the voltage at output terminal 12;

[0092] When the voltage at the output terminal 12 is in the first range and the energy storage module 30 has less than 100% charge, the energy storage module 30 is charged.

[0093] The voltage in the first interval can be the voltage output by the output terminal of the power module 10 during the first preset time period.

[0094] There are various ways to obtain the voltage at output terminal 12. For example, the power module 10 can be communicatively connected to the energy storage module 30, and the energy storage module 30 can receive the voltage signal at the output terminal sent by the power module 10. In one embodiment, the energy storage module 30 can be connected to the output terminal 12 of the power module 10, and the energy storage module 30 can directly collect the voltage at output terminal 12 to obtain the voltage at the output terminal. There are many ways to obtain the voltage at the output terminal, and no specific limitation is made here.

[0095] For example, the first preset time period can be set to a time period with lower mains electricity prices, such as a low-price period and / or a flat-price period. Then, when the voltage at the output terminal 12 is in the first range and the energy storage module's charge is less than 100%, controlling the charging of the energy storage module can reduce energy storage costs.

[0096] Both server 20 and energy storage module 30 are connected to the output terminal 12 of power module 10. When the energy storage module 30 is being charged, the voltage output from the output terminal 12 of power module 10 can also be supplied to the server for its operation. During the first preset time period when mains electricity prices are low, this not only reduces energy storage costs but also lowers the server's electricity costs.

[0097] In one embodiment, the power supply control method may further include: when the voltage of the output terminal 12 is at the second interval voltage and the power of the energy storage module 30 is greater than the power threshold, controlling the energy storage module 30 to discharge in order to provide the server 20 with a third interval voltage, wherein the third interval voltage is less than the first interval voltage and the second interval voltage is less than the third interval voltage; wherein the second interval voltage is the voltage output by the output terminal in a second preset time period.

[0098] For example, the second preset time period can be set to a time period with higher mains electricity prices, such as the peak period of mains electricity prices. Then, when the output voltage is within the second range and the energy storage module's charge is greater than a threshold, the energy storage module is controlled to discharge. This allows the energy storage module to provide the operating voltage to the server, eliminating the need for mains power and further reducing electricity costs. In this embodiment, discharging the energy storage module when its charge exceeds the threshold helps reserve a minimum charge, preventing it from being depleted and extending its lifespan.

[0099] The specific value of the power threshold can be set according to the specific energy storage module. For example, the power threshold can be 25% of the total power of the energy storage module.

[0100] In one embodiment, the power supply control method may further include: controlling the energy storage module 30 to stop discharging when the voltage at the output terminal 12 is a second interval voltage and the charge of the energy storage module 30 is equal to or less than a charge threshold. This allows for the retention of a minimum charge in the energy storage module 30, preventing it from being completely depleted and extending its lifespan.

[0101] In one embodiment, the power supply control method may further include: when the voltage at the output terminal 12 is less than the second interval voltage, controlling the energy storage module 30 to discharge in order to provide the server 20 with a third interval voltage, the third interval voltage being less than the first interval voltage and the second interval voltage being less than the third interval voltage.

[0102] When the voltage at the output terminal 12 is less than the voltage in the second range, it means that the mains power is cut off. At this time, the energy storage module 30 is used as an uninterruptible power supply. The energy storage module 30 is controlled to discharge and provide the third range voltage to the server for the server to work.

[0103] For example, the voltage at the output terminal 12 of the power module 10 can be acquired in real time to determine whether the mains power is lost. If the mains power is lost, the voltage at the output terminal 12 is less than the second interval voltage, and the energy storage module 30 is controlled to discharge. The energy storage module 30 can realize the function of uninterruptible power supply.

[0104] The power supply control method described below with reference to embodiments of this disclosure is explained in detail. Figure 4 The working principle of the data center power supply system shown. Figure 9 A schematic diagram showing the relationship between mains electricity prices and time is provided, illustrating the time periods for off-peak, flat, and peak electricity prices. Figure 10 This is a schematic diagram showing the relationship between the voltage at the output terminal of the power module (PSU voltage) and time. Figure 11 This is a schematic diagram illustrating the relationship between the state of an energy storage module and time.

[0105] In the first preset time phase, for example, the time phase from 0 to t1, such as Figure 9 As shown, the mains electricity price is in a low-price range, and the output terminal of the control power module 10 outputs a first-range voltage (e.g., 48V) to provide operating voltage to the server 20. During the time period 0 to t1, the voltage at the output terminal 12 is within the first-range voltage, as shown... Figure 10 As shown, and when the energy storage module 30's charge is less than 100%, the discharge circuit of the energy storage module 30 is closed and the charging circuit is opened, as follows: Figure 11 As shown, the first interval voltage output from the power module 10 charges the energy storage module 30 through the charging circuit. At time t5 (t5 < t1) during the first preset time period, the energy storage module 30 is fully charged, and the charging circuit of the energy storage module 30 is closed while the discharging circuit is opened, or the charging circuit of the energy storage module 30 is closed while the discharging circuit is closed. Since the mains electricity price is still in a low range during the time period from t5 to t1, the energy storage module 30 neither charges nor discharges, and the power module 10 provides the operating voltage to the server.

[0106] It should be noted that if the output voltage is within the first range, but the energy storage module 30 has 100% charge, then the energy storage module 30 will neither charge nor discharge. Although the discharge circuit of the energy storage module 30 is open during the time period t5 to t1, the discharge voltage of the energy storage module 30 is the third range voltage (e.g., 47.5V), which is lower than the first range voltage. Therefore, the power module's output still provides the operating voltage to the server.

[0107] When time t1 arrives, that is, during the second preset time period, such as the time period from t1 to t6, the electricity price is at its peak. Figure 9 As shown, due to the high price of mains electricity, the output terminal of the control power module 10 outputs a second range voltage (e.g., 47V). During the time period t1 to t6, the voltage at the output terminal of the power module 10 is found to be within the second range voltage, as shown below. Figure 10 As shown, and when the energy storage module 30's charge level exceeds a power threshold (e.g., 25% of the total energy storage module's charge level), the charging circuit of the energy storage module 30 is closed and the discharging circuit is opened, as indicated. Figure 11As shown, the energy storage module 30 discharges, and the voltage output by the energy storage module 30 is the voltage in the third interval (for example, 47.5V). Since the voltage in the third interval is greater than the voltage in the second interval, the voltage in the third interval output by the energy storage module 30 is provided to the server. During the discharge process of the energy storage module 30, the power of the energy storage module 30 can be obtained in real time. For example, at time t6 (t6 < t2), it is obtained that the power of the energy storage module 30 is equal to or less than the power threshold. At this time, the voltage at the output terminal of the power supply module 10 needs to be obtained. If the voltage at the output terminal of the power supply module 10 is the voltage in the second interval, it indicates that the mains power supply is normal and there is no power failure. Then, control the energy storage module 30 to stop discharging. That is, at time t6, the discharge circuit of the energy storage module 30 is closed and the charging circuit is closed, and the voltage in the second interval is provided to the server 20 by the output terminal of the power supply module 30 for the server 20 to work. Then, in the time stage from t6 to t2, the voltage in the second interval is provided to the server by the output terminal of the power supply module for the server 20 to work, and the energy storage module 30 neither charges nor discharges, and the power of the energy storage module 30 is maintained at the power threshold.

[0108] It should be noted that in the time stage from t6 to t2, the voltage at the output terminal 12 of the power supply module 10 can be obtained in real time. If the voltage at the output terminal 12 of the power supply module 10 is less than the voltage in the second interval, it indicates that the mains power has failed. In the case of mains power failure, even if the power of the energy storage module 10 is already equal to or less than the power threshold, it is still necessary to control the charging circuit of the energy storage module 10 to be closed and the discharge circuit to be opened, and the energy storage module 10 discharges to provide the voltage in the third interval to the server 20 for the server 20 to work.

[0109] In the time stage from t2 to t3, the mains power price is at the flat stage. This time stage belongs to the first preset time stage, and the working principle of the power supply system is the same as that in the time stage from 0 to t1, which will not be elaborated here.

[0110] In the time stage from t3 to t4, the mains power price is at the peak stage. This time stage belongs to the second preset time stage, and the working principle of the power supply system is the same as that in the time stage from t1 to t2, which will not be elaborated here.

[0111] In the power supply system and its power supply control method for the data center according to the embodiments of the present disclosure, the mains power is used to supply power to the server and charge the energy storage module in the valley and / or flat stages of the mains power price; in the peak stage of the mains power price, the energy storage module is used to supply power to the server, making full use of the low price of the mains power in the valley and flat stages, greatly reducing the cost of the power supply system. Moreover, in the case of mains power failure, the energy storage module can supply power to the server in time, acting as an uninterruptible power supply.

[0112] This disclosure also provides a power supply control device for a data center power supply system, including a control circuit for implementing the power supply control method in any embodiment of this disclosure.

[0113] This disclosure also provides a control device, including: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to perform the power supply control method in any embodiment of this disclosure.

[0114] This disclosure also provides a data center, including at least one of the following: a data center power supply system according to any embodiment of this disclosure, a power supply control device according to any embodiment of this disclosure, and a control device according to any embodiment of this disclosure.

[0115] The acquisition, storage, and application of user personal information involved in the technical solution disclosed herein comply with the provisions of relevant laws and regulations and do not violate public order and good morals.

[0116] Figure 12 A schematic block diagram of an example control device 1200 that can be used to implement embodiments of the present disclosure is shown. The control device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The control device may also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present disclosure described and / or claimed herein.

[0117] like Figure 12 As shown, device 1200 includes a computing unit 1201, which can perform various appropriate actions and processes according to a computer program stored in read-only memory (ROM) 1202 or a computer program loaded from storage unit 1208 into random access memory (RAM) 1203. The RAM 1203 may also store various programs and data required for the operation of device 1200. The computing unit 1201, ROM 1202, and RAM 1203 are interconnected via bus 1204. Input / output (I / O) interface 1205 is also connected to bus 1204.

[0118] Multiple components in device 1200 are connected to I / O interface 1205, including: input unit 1206, such as keyboard, mouse, etc.; output unit 1207, such as various types of monitors, speakers, etc.; storage unit 1208, such as disk, optical disk, etc.; and communication unit 1209, such as network card, modem, wireless transceiver, etc. Communication unit 1209 allows device 1200 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0119] The computing unit 1201 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of the computing unit 1201 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various computing units running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. The computing unit 1201 performs the various methods and processes described above, such as power supply control methods. For example, in some embodiments, the power supply control method may be implemented as a computer software program tangibly contained in a machine-readable medium, such as storage unit 1208. In some embodiments, part or all of the computer program may be loaded and / or installed on device 1200 via ROM 1202 and / or communication unit 1209. When the computer program is loaded into RAM 1203 and executed by the computing unit 1201, one or more steps of the power supply control method described above may be performed. Alternatively, in other embodiments, the computing unit 1201 may be configured to perform the power supply control method by any other suitable means (e.g., by means of firmware).

[0120] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0121] The program code used to implement the methods of this disclosure may be written in any combination of one or more programming languages. This program code may be provided to a processor or controller of a general-purpose computer, special-purpose computer, or other programmable data processing apparatus, such that when executed by the processor or controller, the program code causes the functions / operations specified in the flowcharts and / or block diagrams to be implemented. The program code may be executed entirely on a machine, partially on a machine, as a standalone software package partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0122] In the context of this disclosure, a machine-readable medium can be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, apparatus, or device. A machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium can be, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0123] To provide interaction with a user, the systems and techniques described herein can be implemented on a computer having: a display device for displaying information to the user (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor); and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the computer. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0124] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as a data server), or computing systems that include middleware components (e.g., an application server), or computing systems that include frontend components (e.g., a user computer with a graphical user interface or web browser through which a user can interact with embodiments of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., a communication network). Examples of communication networks include local area networks (LANs), wide area networks (WANs), and the Internet.

[0125] Computer systems can include clients and servers. Clients and servers are generally located far apart and typically interact via communication networks. Client-server relationships are created by computer programs running on the respective computers and having a client-server relationship with each other. Servers can be cloud servers, servers in distributed systems, or servers incorporating blockchain technology.

[0126] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this disclosure can be achieved, and this is not limited herein.

[0127] The specific embodiments described above do not constitute a limitation on the scope of protection of this disclosure. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A data center power supply system, comprising: a power module, comprising an input end and an output end, the input end being configured to connect an input power supply, the input power supply being a commercial power supply; at least one server, each being connected to the output end; at least one energy storage module, comprising a bidirectional DC converter, a battery pack loop and a battery management unit, a first side port of the bidirectional DC converter being connected to the output end, a second side port of the bidirectional DC converter being connected to the battery pack loop, a control end of the bidirectional DC converter being connected to the battery management unit, the battery management unit being configured to control a current flow direction of the first side port and the second side port of the bidirectional DC converter, so as to charge the battery pack loop or discharge the battery pack loop to the server; the output end being connected to the server through a power bus, the power supply system further comprising a hot plug connector, the hot plug connector comprising a pair of power pins, the first side port of the bidirectional DC converter being connected to the power bus through the pair of power pins of the hot plug connector; wherein the hot plug connector comprises a first connector and a second connector which can be plugged into each other, a pair of control pins of the first connector being short-circuited through a short-circuit wire, a pair of control pins of the second connector being connected to the battery management unit respectively, the battery management unit being further configured to turn on the bidirectional DC converter through a current limiting mode in a case that the second connector is plugged into the first connector; wherein the battery management unit is further configured to turn off the bidirectional DC converter through the current limiting mode in a case that the second connector is disconnected from the first connector.

2. The power supply system of claim 1, wherein, The working voltage of the server is 48 V DC voltage.

3. The power supply system of claim 1, wherein, The number of the energy storage modules is equal to or greater than the number of the servers, and each of the servers has at least one corresponding energy storage module.

4. The power supply system according to any one of claims 1-3, wherein, The battery pack loop comprises a lithium battery pack, and the battery management unit is further configured to collect a state parameter of the lithium battery pack.

5. The power supply system of claim 4, wherein, The power supply system further comprises a state indication module, the state indication module being connected to the battery management unit, and the battery management unit is further configured to control the state indication module to perform state indication according to the state parameter of the lithium battery pack. 6.A power supply control method of a data center power supply system, the power supply system being any one of the power supply systems of claims 1-5, the power supply control method comprising: acquiring a voltage of the output end; controlling to charge the energy storage module in a case that the voltage of the output end is in a first interval voltage and the energy storage module has less than 100% of an electric quantity; wherein the first interval voltage is a voltage output by the output end in a first preset time phase.

7. The power supply control method according to claim 6, wherein Further comprising: controlling the energy storage module to discharge in a case that the voltage of the output end is in a second interval voltage and the energy storage module has more than an electric quantity threshold, so as to provide a third interval voltage to the server, the third interval voltage being less than the first interval voltage, and the second interval voltage being less than the third interval voltage; wherein the second interval voltage is a voltage output by the output end in a second preset time phase.

8. The power supply control method according to claim 7, wherein Further comprising: In a case where the voltage at the output end is a second-interval voltage and the electric quantity of the energy storage module is equal to or less than the electric quantity threshold, the energy storage module is controlled to stop discharging.

9. The power supply control method according to claim 7, wherein Further comprising: In a case where the voltage at the output end is less than the second-interval voltage, the energy storage module is controlled to discharge to provide a third-interval voltage to the server, the third-interval voltage being less than the first-interval voltage, and the second-interval voltage being less than the third-interval voltage.

10. The power supply control method according to claim 7, wherein The first preset time period is a valley section or / and a flat section of a power price, and the second preset time period is a peak section of the power price.

11. A power supply control method of a data center power supply system, employing the power supply system of any one of claims 1-5, the power supply method comprising: In a first preset time period, the power supply module is controlled to provide a first-interval voltage to the output end to provide an operating voltage to the server.

12. The power supply control method according to claim 11, wherein Further comprising: In a second preset time period, the power supply module is controlled to provide a second-interval voltage to the output end, the second-interval voltage being less than the first-interval voltage.

13. The power supply control method according to claim 12, wherein The first preset time period is a valley section or / and a flat section of a power price, and the second preset time period is a peak section of the power price.

14. A power supply control device of a data center power supply system, comprising a control circuit configured to implement the method of any one of claims 6-13.

15. A control device, comprising: at least one processor; and a memory connected to the at least one processor in communication; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to implement the method of any one of claims 6-13.

16. A data center, comprising at least one of: the power supply system of any one of claims 1-5; the power supply control device of claim 14; the control device of claim 15.

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