CN216489877U - Data center power supply system and data center - Google Patents

Abstract

The utility model provides a data center power supply system and data center relates to computer technical field, especially relates to big data field. The specific implementation scheme is as follows: the data center power supply system includes: a power supply module; at least one server, all connected to the output end; the energy storage module comprises a bidirectional direct current converter, a battery pack loop and a battery management unit, wherein a first side port of the bidirectional direct current converter is connected with the output end of the power module, a second side port of the bidirectional direct current converter is connected with the battery pack loop, a control end of the bidirectional direct current converter is connected with the battery management unit, and the battery management unit is used for controlling the current flowing direction 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 discharge the battery pack loop to a server. In the power supply system, the energy storage module is low in cost and flexible in configuration, and the requirement for diversity of a data center can be met.

Description

Data center power supply system and data center

Technical Field

The present disclosure relates to the field of computer technology, and more particularly, to the field of big data.

Background

Data centers are the core area of information integration, usually carry important storage or computing resources, and have to be sufficiently secured by electric power sources.

In the prior art, a power supply system of a data center has the problems of large occupied area, high cost, inflexible system, difficulty in capacity expansion and the like, and the complex and variable data center requirements are difficult to meet.

SUMMERY OF THE UTILITY MODEL

The disclosure provides a data center power supply system and a data center.

According to a first aspect of the present disclosure, there is provided a data center power supply system, including:

the power supply module comprises an input end and an output end, wherein the input end is used for connecting an input power supply;

at least one server, all connected to the output end;

the energy storage module comprises a bidirectional direct current converter, a battery pack loop and a battery management unit, wherein a first side port of the bidirectional direct current converter is connected with an output end, a second side port of the bidirectional direct current converter is connected with the battery pack loop, a control end of the bidirectional direct current converter is connected with the battery management unit, and the battery management unit is used for controlling the current flowing direction 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 discharge the battery pack loop to a server.

In some possible implementations, the output end is connected to the server through a power bus, the power supply system further includes a hot plug connector, the hot plug connector includes a pair of power pins, and the first side port of the bidirectional dc converter is connected to the power bus through the pair of power pins of the hot plug connector.

In some possible implementations, the hot plug connector includes a first connector and a second connector that are opposite to each other, a pair of control pins of the first connector is shorted by a shorting line, a pair of control pins of the second connector is connected to the battery management unit, and the battery management unit is further configured to turn on the bidirectional dc converter in a current limiting mode when the second connector is connected to the first connector.

In some possible implementations, the battery management unit is further configured to shut down the bidirectional dc converter in the current limiting mode if the second terminal is disconnected from the first terminal.

In some possible implementations, the operating voltage of the server is 48V dc voltage.

In some possible implementations, the number of energy storage modules is equal to or greater than the number of servers, each server having at least one corresponding energy storage module.

In some possible implementations, the battery pack loop includes a lithium battery pack, and the battery management unit is further configured to acquire a state parameter of the lithium battery pack.

In some possible implementation manners, the power supply system further includes a state indication module, the state indication module is 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.

In some possible implementation manners, the power supply system further includes a voltage detection module, the voltage detection module is connected to the output end of the power supply module, the voltage detection module is connected to the battery management unit, and the battery management unit is further configured to collect the voltage at the output end through the voltage detection module.

According to a second aspect of the present disclosure, there is provided a data center including the power supply system in any one of the embodiments of the present disclosure.

In the power supply system in the embodiment of the disclosure, the energy storage module is no longer high-voltage and high-power, but is low-voltage and low-power with the same direct current as the server, the energy storage module is low in cost, flexible in configuration, convenient in operation and maintenance, and small in fault influence range, and the power supply system can replace a traditional uninterruptible power supply, simplify a power supply framework, improve power supply efficiency, and meet the requirements of flexible configuration, prefabrication and configuration diversity of a data center.

It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present disclosure, nor do they limit the scope of the present disclosure. Other features of the present disclosure will become apparent from the following description.

Drawings

The drawings are included to provide a better understanding of the present solution and are not to be construed as limiting the present disclosure. Wherein:

FIG. 1a is a schematic diagram of a power supply architecture of a 12V data center;

FIG. 1b is a schematic diagram of a 12V server-side power supply topology and a relationship between server cabinets;

FIG. 2a is a schematic diagram of a power supply architecture of a 48V data center;

FIG. 2b is a schematic diagram of a relationship between a 48V server-side power supply topology and a server rack;

FIG. 3 is a schematic diagram of a power supply architecture of a data center including an energy storage system;

fig. 4 is a schematic diagram of an architecture of a data center power supply system according to an embodiment of the disclosure;

FIG. 5 is a schematic diagram of a bidirectional DC converter;

fig. 6 is a schematic diagram of a connection architecture of a server and an energy storage module in a power supply system according to an embodiment of the present disclosure;

FIG. 7 is a schematic diagram of a 12V server cabinet;

FIG. 8 is a schematic diagram of a power supply system modified from the architecture shown in FIG. 7;

fig. 9 shows a graph of mains price versus time, showing times for trough, flat and peak segments of the mains price;

FIG. 10 is a diagram illustrating the relationship between the voltage at the output of the power module and the time;

FIG. 11 is a schematic diagram of the state of an energy storage module versus time;

fig. 12 is a block diagram of a control apparatus for implementing the power supply control method of the embodiment of the present disclosure.

Detailed Description

Exemplary embodiments of the present disclosure are described below with reference to the accompanying drawings, in which various details of the embodiments of the disclosure are included to assist understanding, and which are to be considered as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the present disclosure. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.

Data centers are usually configured with UPS (alternating current uninterruptible power supply)/HVDC (direct current uninterruptible power supply, also called high voltage direct current) + lead-acid storage battery as a backup power supply for a data center server, or UPS/HVDC + lithium battery as a backup power supply for a data center server.

The power supply voltage of the server is mainly 12V, and the single cabinet is generally within 10 kW. Due to the continuous increase of the power density of the server, the power supply voltage of the server is increased to 48V, and the power density is increased to dozens of kW.

Fig. 1a is a schematic diagram of a power supply architecture of a 12V data center, and fig. 1b is a schematic diagram of a relationship between a 12V server-side power supply topology and a server cabinet. As shown in fig. 1a, the commercial power is supplied to the data center through the UPS/HVDC + battery, and then 220V ac or 240V dc is converted into 12V dc through the power module (PSU) to supply power to the 12V server. The battery is generally a lead-acid battery, and can also be a lithium battery. As shown in fig. 1b, a power supply module (PSU) and a plurality of 12V servers are disposed in the 12V server cabinet, and each 12V server is connected to an output terminal of the power supply module.

Fig. 2a is a schematic diagram of a power supply architecture of a 48V data center, and fig. 2b is a schematic diagram of a relationship between a 48V server-side power supply topology and a server cabinet. As shown in fig. 2a, the commercial power is passed through UPS/HVDC + battery to provide uninterruptible power for the data center, and then 220V ac or 240V dc is converted into 48V dc by power supply module (PSU) to supply power for 48V server. The battery is generally a lead-acid battery, and can also be a lithium battery. As shown in fig. 2b, a power supply module (PSU) and a plurality of 48V servers are disposed in the 48V server cabinet, and each 48V server is connected to an output terminal of the power supply module.

With the proposal of the national dual-carbon target, the peak-valley price difference of every part is larger and larger at present, and governments encourage energy storage construction of power utilization enterprises. The data center builds energy storage, and on one hand, the data center cooperates with a power grid to carry out peak clipping and valley filling, and on the other hand, the data center can carry out peak-valley price difference arbitrage. Currently, data centers are actively exploring energy storage solutions. However, the existing energy storage is mainly large energy storage, needs a single floor area, and simultaneously provides a higher challenge for the overall power supply architecture of the data center.

Fig. 3 is a schematic diagram of a power supply architecture of a data center including an energy storage system. Based on the power supply architectures shown in fig. 1a and 2a, a power supply architecture including an energy storage system as shown in fig. 3 may be adopted, and a UPS/HVDC and configured battery may be eliminated in some items. The energy storage system is conventional large-scale energy storage, the battery voltage level in the energy storage system is high, the occupied area is large, and an additional building space needs to be searched. When a project is transformed, the whole data center needs to be completely powered off, the construction process is long, the cost is high, and the economic loss is large.

Thus, the energy storage system shown in fig. 3 occupies a large area, requires increased construction costs, and poses a significant challenge for retrofitting data centers. The energy storage system is high in power and high in voltage, and all adopted components are high-power devices, so that the overall system cost is high, and the workload of construction, installation, maintenance and the like is large; the energy storage system is inflexible and difficult to expand, and the complex and variable data center requirements are difficult to meet.

Fig. 4 is a schematic diagram of an architecture of a data center power supply system according to an embodiment of the disclosure. In one embodiment, as shown in fig. 4, a 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, where the input terminal 11 is used for connecting an input power source, which may be, for example, a commercial power. At least one server 20 is connected to the output 12 of the power module 10.

The energy storage module 30 includes a bidirectional dc converter 31, a battery pack loop 32, and a battery management unit 33, wherein a first side port 311 of the bidirectional dc converter 31 is connected to the output end 12, a second side port 312 of the bidirectional dc converter 31 is connected to the battery pack loop 32, a control end 313 of the bidirectional dc converter 31 is connected to the battery management unit 33, and the battery management unit 33 is configured to control current flowing directions of the first side port 311 and the second side port 312 of the bidirectional dc converter 31, so as to charge the battery pack loop 32 or discharge the battery pack loop 32 to the server 20.

In the data center power supply system according to the embodiment of the disclosure, the first side port 311 of the bidirectional dc converter 31 in the energy storage module 30 is connected to the output end 12, the second side port 312 of the bidirectional dc converter 31 is connected to the battery pack loop 32, and the battery management unit 33 is adopted to control the current flowing directions of the first side port 311 and the second side port 312 of the bidirectional dc converter 31, so as to realize charging and discharging of the energy storage module.

In the power supply system in the embodiment of the present disclosure, the energy storage module 30 and the server 20 are both connected to the output end 12 of the power supply module 10, thereby, the charging voltage and the discharging voltage of the energy storage module 30 are both equivalent to the working voltage of the server 20, the energy storage module 30 is no longer high voltage and high power, and is the same dc low voltage as the server 20, low power, the energy storage module is low in cost, flexible in configuration, convenient in operation and maintenance, and small in fault influence range, such power supply system not only can replace the traditional uninterruptible power supply, but also simplifies the power supply architecture, and improves the power supply efficiency, and the requirements of flexible configuration, prefabrication and diversity configuration of a data center can be met.

Illustratively, the battery management unit may include a logic gate circuit and/or a control device, the logic gate circuit and/or the control device may be connected to the bidirectional dc converter 31, and the battery management unit may control the current of the bidirectional dc converter to flow from the first side port to the second side port or from the second side port to the first side port through the logic gate circuit and/or the control device.

For example, the battery management unit may include a programmable logic controller, and the battery management unit may control the current of the bidirectional dc converter to flow from the first side port to the second side port or from the second side port to the first side port through the programmable logic controller.

Fig. 5 is a schematic diagram of a bidirectional dc converter. Illustratively, as shown in fig. 5, the bidirectional dc converter 31 may include a first side port 311, a second side port 312, and a control terminal 313, and the bidirectional dc converter 31 may include a charging circuit and a discharging circuit, both of which are 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 be turned on or off through the control terminal 313 of the bidirectional dc converter 31. When the battery management unit 33 controls the charging circuit to be turned on and the discharging circuit to be turned off, the first side port 311 is connected to the second side port 312 through the charging circuit, current can flow from the first side port 311 to the second side port 312, and the voltage at the output terminal 12 of the power module 10 can charge the battery pack circuit 32 through the bidirectional dc converter 31. When the battery management unit 33 controls the discharge circuit to be turned on and the charge 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, and the battery pack circuit 32 can discharge through the bidirectional dc converter 31 to provide operating voltage to the server 20.

For example, the battery management unit 33 may also control 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 is neither charged nor discharged.

As shown in fig. 4, the battery circuit 32 may include a lithium battery 321, and the battery management unit 33 is further configured to collect status parameters of the lithium battery 321. The battery management unit 33 can monitor the state of the lithium battery pack 321 by collecting the state parameters of the lithium battery pack 321, thereby being beneficial to the operation and maintenance of the battery pack loop 32 and avoiding the occurrence of danger.

For example, the lithium battery pack 321 may include a plurality of lithium battery cells, and the plurality of lithium battery cells may be connected in parallel to provide a sufficient discharge current. The lithium battery unit may include a plurality of lithium battery cells, and the plurality of lithium battery cells may be connected in series to realize a corresponding voltage. The number of the lithium battery units connected in parallel in the lithium battery pack 321 can be set as required, and the lithium battery units connected in series in the lithium battery units can be set as required.

As shown in fig. 4, the state parameters of the lithium battery pack 321 may include voltage, current, temperature, and the like. The battery pack circuit 32 may further include a fuse 322, a current detection device 323, and the like, and the fuse 322 and the current detection device 323 may be connected in series in the battery pack circuit 32. The battery management unit 33 may be connected to the current detection device 323, so that the battery management unit 33 collects the current of the lithium battery pack 321 through the current detection device 323. The fuse 322 may provide overcurrent protection for the battery circuit 32.

Illustratively, the battery management unit 33 may also be connected to the second side port 312 of the bidirectional dc converter 31 to obtain a desired operating voltage from the bidirectional dc converter 31.

In an embodiment, the power supply system may further include a status indication module 40, and the status indication module 40 may be connected to the battery management unit 33, and the battery management unit is further configured to control the status indication module 40 to perform status indication according to a status parameter of the lithium battery pack 321.

The status indication module 40 may include an alarm, a fault indicator light, a power indicator light, an operating status indicator light, and the like. When the battery management unit 33 determines that the lithium battery pack 321 has a fault through the state parameters of the lithium battery pack 321, the alarm can be controlled to alarm, and the fault indicator lamp is controlled to be turned on so as to remind operation and maintenance personnel. The battery management unit 33 may collect the power parameters of the lithium battery pack 321, and control the corresponding power indicator to light up to display the power of the lithium battery pack 321. The battery management unit 33 may control the operation status indicator lamp to be turned on to display the operation status of the lithium battery pack.

In one embodiment, as shown in fig. 4, the output 12 of the power module 10 is connected to the servers 20 via a power bus 50, that is, the output 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 further include a hot swap connector 60, the hot swap connector 60 may include a pair of power pins, and the first side port 311 of the bidirectional dc converter 31 is connected to the power bus 50 through the pair of power pins of the hot swap connector 60.

The power bus 50 may include a positive power bus 51 and a negative power bus 52, the positive power bus 51 being connected to the positive pole of the output terminal 12, and the negative power bus 52 being connected to the negative pole of the output terminal 12. The positive electrode of the power input terminal of the server 20 is connected to the positive power bus 51, and the negative electrode 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 swap connector 60 may connect the positive power bus 51 and the negative power bus 52, respectively.

The first side port 311 of the bidirectional dc converter 31 is connected to the power bus 50 through a pair of power pins of the hot plug connector 60, so that when a single energy storage module 30 needs to be maintained, the energy storage module 30 can be separated from the power supply system only by separating the male connector and the female connector of the hot plug connector 60, and the maintenance of the single energy storage module 30 is facilitated. And as long as the hot plug joint with the uniform interface is adopted, the power supply system can be connected with the energy storage modules of different manufacturers, and convenience is provided for the configuration of the energy storage modules.

In one embodiment, as shown in fig. 4, the hot swap connector 60 may include a first connector 61 and a second connector 62 that are pluggable into each other, the first connector 61 being connected to the power bus 50, and the second connector 62 being connected to the energy storage module 30. The pair of power supply pins 1a and 2a of the first connector 61 are connected to the positive power supply bus 51 and the negative power supply bus 52, respectively, and the pair of power supply pins 1b and 2b of the second connector 62 are connected to the first side port 311 of the bidirectional dc converter 31, respectively. The hot swap connector 60 may further include a pair of control pins 3 and 4, the pair of control pins 3a and 4a of the first connector 61 are shorted by a shorting line, and the pair of control pins 3b and 4b of the second connector 62 are connected to the battery management unit 33. Illustratively, a pair of control pins 3b and 4b of the second connector 62 may be connected with a control interface of the battery management unit 33. The battery management unit 33 is also used to turn on the bidirectional dc converter 31 in the current limiting mode in the case where the second connector 62 is plugged to the first connector 61.

It should be noted that, when the second connector 62 is not plugged into the first connector 61, the pair of control pins 3b and 4b of the second connector 62 is in an off state, so that the control interface of the battery management unit 33 is in an off state, and when the second connector 62 is plugged into the first connector 61, the pair of control pins 3b and 4b of the second connector 62 are respectively connected with the pair of control pins 3a and 4a of the first connector 61, and since the control pins 3a and 4a are shorted by short wires, the pair of control pins 3b and 4b of the second connector 62 are connected, so that the control interface of the battery management unit 33 is changed from the off state to the connected state, and this change of state triggers the battery management unit 33, so that the battery management unit 33 opens the bidirectional dc converter 31 in the current limiting mode.

In this way, when the second connector 62 is plugged into the first connector 61, the battery management unit 33 turns on the bidirectional dc converter 31 in the current limiting mode, so that the current of the bidirectional dc converter 31 gradually increases to the working current, thereby preventing the current of the bidirectional dc converter 31 from suddenly increasing to the working current, further preventing a large current from impacting, and preventing the loop from being affected by instant connection of the bidirectional dc converter.

In one embodiment, the battery management unit 33 is further configured to shut down the bi-directional dc converter 31 in the current limiting mode if the second connector 62 is disconnected from the first connector 61.

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, and when the second connector 62 is disconnected from the first connector 61, the control interface of the battery management unit 33 is changed from the connected state to the disconnected state, and the change of the state triggers the battery management unit 33, so that the battery management unit turns off the bidirectional dc converter 31 in the current limiting mode. In this way, when the second terminal 62 is disconnected from the first terminal 61, the current of the bidirectional dc converter 31 is gradually reduced, so that a current surge caused by a sudden reduction of the current of the bidirectional dc converter 31 to 0 is avoided, and the influence of instantaneous disconnection of the bidirectional dc converter on the circuit is avoided.

Illustratively, the battery management unit 33 may include a current limiting circuit, the current limiting circuit may be connected to the bidirectional dc converter 31, and the battery management unit 33 controls the bidirectional dc converter 31 to be turned on or off through the current limiting circuit. When the bidirectional dc converter 31 is controlled to be turned on, the battery management unit 33 controls the current of the bidirectional dc converter 31 to gradually increase to the working current through the current limiting circuit; when the bidirectional dc converter 31 is controlled to be turned off, the battery management unit 33 controls the current of the bidirectional dc converter 31 to gradually decrease through the current limiting circuit.

In one embodiment, the first connector 61 may be a female connector and the second connector 62 may be a male connector. In another embodiment, the first connector 61 may be a male connector and the second connector 62 may be a female connector.

In one embodiment, the energy storage module 30 may be communicatively coupled to the power module 10.

In an embodiment, the power supply system may further include a voltage detection module, the voltage detection module is connected to the output end of the power module 10, the voltage detection module is connected to the battery management unit 33, and the battery management unit 33 is further configured to collect the voltage at the output end of the power module 10 through the voltage detection module, so that the battery management unit 33 controls the charging or discharging of the energy storage module 30 according to the voltage at the output end of the power module 10. The voltage detection module may be a voltage detection sensor.

Fig. 6 is a schematic diagram of a connection architecture of a server and an energy storage module in a power supply system according to an embodiment of the present disclosure. In one embodiment, as shown in FIG. 6, the number of energy storage modules 30 is equal to or greater than the number of servers 20, and at least one corresponding energy storage module is present for each server 20. For example, the number of servers 20 may be N, the number of energy storage modules 30 may be N + M, the N energy storage modules 30 may correspond to the N servers 20 one to one, and the M energy storage modules 30 may serve as standby energy storage modules. M is a positive integer greater than or equal to 1.

In one embodiment, the operating voltage of the server 20 may be 48V DC. Correspondingly, the output terminal of the power module 10 may output a dc voltage equivalent to 48V, and the discharge voltage of the energy storage module 30 may be 48V dc voltage.

It is understood that in the prior art, the power supply voltage of the server is usually 12V dc voltage, and a server cabinet is generally within 10 kW. Due to the continuous increase of the power density of the server, the power supply voltage of the server is increased to 48V, and the power density is increased to dozens of kW. In the embodiment of the present disclosure, the discharging voltage of the energy storage module 30 is 48V dc voltage, which is beneficial to the establishment of 48V server ecology, and may be suitable for a data center based on 48V servers.

Fig. 7 is a schematic diagram of a 12V server cabinet. As shown in fig. 7, the number of 12V server racks is 10, and the power of each 12V server rack is 10 kW.

Fig. 8 is a schematic diagram of a power supply system modified from the architecture shown in fig. 7. As shown in fig. 8, since the total power supply capacity in fig. 7 is 100kW, only 5 48V server cabinets of 20kW need to be modified, and each of the 5 48V server cabinets is configured with one 48V energy storage cabinet.

Compared with the architecture shown in fig. 7, the data center power supply system shown in fig. 8 can provide not only the server cabinets with sufficient power but also an equal number of energy storage cabinets in the same space, and no additional space needs to be added to the energy storage cabinets.

The embodiment of the disclosure also provides a power supply control method of the data center power supply system. As shown in fig. 4, the power supply system may include a power module 10, at least one server 20, and at least one energy storage module 30, where the power module 10 includes an input end 11 and an output end 12, the input end 11 is used for connecting an input power, the at least one server 20 is connected with the output end 12, and the at least one energy storage module 30 is connected with the output end 12. The power supply control method may include:

during a first preset time period, the power module 10 is controlled to provide the first interval voltage to the output terminal 12 to provide the operating voltage to the server 20.

It should be noted that, with the proposal of the national dual-carbon target, the utility power price includes a valley section, a flat section and a peak section, and in the peak section, the utility power price is higher, the utility power price of the flat section is lower than that of the peak section, the utility power price of the valley section is lower than that of the flat section, and the utility power price of the valley section is the lowest. The valley, flat and peak segments of the utility price may be set according to a 24 hour day period, for example, the peak segments may include: 10:00-12:00, 14:00-19: 00; the flat section may include: 8:00-10:00, 12:00-14:00, 19:00-24: 00; the valley section may include: 00:00-8:00.

The first preset time period may be set to a valley and/or a flat section of the mains price, whereby the mains price of the first preset time period is lower. In the first preset time period, the voltage is provided to the server 20 through the power module 10 by the commercial power, so that the electricity cost can be reduced. At first preset time stage, can also control and charge to energy storage module can store the electric quantity when the commercial power price is lower, reduces the energy storage cost.

In one embodiment, the power supply control method may further include: and controlling the power module 10 to provide a second interval voltage to the output end 12 in a second preset time period, wherein the second interval voltage is smaller than the first interval voltage.

The second preset time period may be set to a peak period of the commercial power price, so that the commercial power price of the second preset time period is higher, and the power module 10 is controlled to provide the second interval voltage to the output terminal 12 at the second preset time period, where the second interval voltage is smaller than the first interval voltage. In the second preset time period, when the energy storage module 30 discharges, the energy storage module 30 provides a third interval voltage to the server 20 for the server 20 to work, and the power supply module is no longer used to provide a working voltage to the server 20; when the energy storage module 30 stops discharging, the output end of the power module 10 may provide the second interval voltage to the server 20 for the server 20 to operate, so as to reduce the service time of the utility power and reduce the power consumption cost.

The first preset time period is set as a valley section or a flat section of the commercial power price, and the second preset time period is set as a peak section of the commercial power price, so that the time of the first preset time period and the time of the second preset time period can be specifically determined.

It should be noted that the specific voltage ranges of the first interval voltage, the second interval voltage, and the third interval voltage may be set according to the nominal operating voltage of the server 20, for example, the nominal operating voltage of the server 20 is 48V dc voltage, and the first interval voltage may be 47.8V to 48.2V dc voltage, for example, 48V; the second interval voltage can be 46.8V-47.2V DC voltage, such as 47V; the third interval voltage may be a dc voltage of 47.3V-47.7V, for example, 47.5V.

The power supply control method of the data center power supply system in the embodiment of the present disclosure may be applied to the data center power supply system in any embodiment of the present disclosure.

In the power supply control method in the embodiment of the disclosure, in the valley section and/or the flat section of the commercial power price, the commercial power supplies working voltage to the server through the power module, and the energy storage module is controlled to be charged at the same time, so that the power consumption cost and the energy storage cost of the server can be reduced; at the peak of the commercial power price, the energy storage module provides working voltage for the server, so that the time for using the commercial power is reduced, and the power consumption cost is further reduced.

In addition, because the valley section, the flat section and the peak section of the commercial power price can be specifically determined, the first preset time stage and the second preset time stage can also be specifically determined, so that the first preset time stage and the second preset time stage can be set for the power module, the power module and the energy storage module are not required to be communicated with each other, and the control efficiency is improved.

The embodiment of the disclosure also provides a power supply control method of the data center power supply system. As shown in fig. 4, the power supply system may include a power module 10, at least one server 20, and at least one energy storage module 30, where the power module 10 includes an input end 11 and an output end 12, the input end 11 is used for connecting an input power, the at least one server 20 is connected with the output end 12, and the at least one energy storage module 30 is connected with the output end 12. The power supply control method may include:

acquiring the voltage of the output end 12;

under the condition that the voltage of the output end 12 is in the first interval voltage and the electric quantity of the energy storage module 30 is less than 100%, controlling to charge the energy storage module 30;

the first interval voltage may be a voltage output by the output terminal of the power module 10 at a first preset time period.

The voltage at the output 12 can be obtained in various ways. For example, the power module 10 may be communicatively connected to the energy storage module 30, and the energy storage module 30 may receive a voltage signal from an output terminal of the power module 10 to the energy storage module 30. In one embodiment, the energy storage module 30 may be connected to the output end 12 of the power module 10, and the energy storage module 30 may directly collect the voltage at the output end 12 to obtain the voltage at the output end. The manner of obtaining the voltage at the output terminal is various, and is not particularly limited.

For example, the first preset time period may be set to a time period in which the utility power price is low, for example, the first preset time period may be a valley section and/or a flat section of the utility power price. Then, under the condition that the voltage of the output end 12 is in the first interval voltage and the electric quantity of the energy storage module is less than 100%, the energy storage module is controlled to be charged, and the energy storage cost can be reduced.

The server 20 and the energy storage module 30 are both connected to the output end 12 of the power module 10, and under the condition of controlling the energy storage module 30 to be charged, the voltage output by the output end 12 of the power module 10 can also be provided for the server to work. Under the condition that the first preset time stage is the time stage with lower commercial power price, the energy storage cost is reduced, and the electricity utilization cost of the server can also be reduced.

In one embodiment, the power supply control method may further include: under the condition that the voltage of the output end 12 is at the second interval voltage and the electric quantity of the energy storage module 30 is greater than the electric quantity threshold value, controlling the energy storage module 30 to discharge so as to provide a third interval voltage to the server 20, wherein the third interval voltage is smaller than the first interval voltage, and the second interval voltage is smaller than the third interval voltage; the second interval voltage is a voltage output by the output end in a second preset time period.

For example, the second preset time period may be set to a time period in which the utility power price is high, for example, the second preset time period may be a peak period of the utility power price. Then, under the condition that the voltage of the output end is in the second interval voltage and the electric quantity of the energy storage module is larger than the electric quantity threshold value, the energy storage module is controlled to discharge, so that the energy storage module provides working voltage for the server, the commercial power is not used for supplying power, and the power consumption cost is further reduced. In this embodiment, under the condition that the electric quantity of the energy storage module is greater than the electric quantity threshold value, the energy storage module discharges, so that the minimum electric quantity can be reserved for the energy storage module, the electric quantity of the energy storage module is prevented from being exhausted, and the service life of the energy storage module is prolonged.

The specific value of the electric quantity threshold value can be specifically set according to the energy storage module, and for example, the electric quantity threshold value can be 25% of the total electric quantity of the energy storage module.

In one embodiment, the power supply control method may further include: and controlling the energy storage module 30 to stop discharging when the voltage of the output end 12 is the second interval voltage and the electric quantity of the energy storage module 30 is equal to or less than the electric quantity threshold value. Therefore, the minimum electric quantity can be reserved for the energy storage module 30, the electric quantity of the energy storage module 30 is prevented from being exhausted, and the service life of the energy storage module is prolonged.

In one embodiment, the power supply control method may further include: and under the condition that the voltage of the output end 12 is less than the second interval voltage, controlling the energy storage module 30 to discharge so as to provide a third interval voltage to the server 20, wherein the third interval voltage is less than the first interval voltage, and the second interval voltage is less than the third interval voltage.

When the voltage of the output end 12 is smaller than the voltage in the second interval, it means that the commercial power is powered off, and at this time, the energy storage module 30 is used as an uninterruptible power supply to control the energy storage module 30 to discharge, and provide the voltage in the third interval to the server for the server to work.

For example, the voltage of the output end 12 of the power module 10 may be obtained in real time, so as to determine whether the mains power is down in real time, and in the case of the mains power being down, the voltage of the output end 12 is smaller than the voltage in the second interval, so as to control the energy storage module 30 to discharge, and the energy storage module 30 may implement the function of the uninterruptible power supply.

The working principle of the data center power supply system shown in fig. 4 is described in detail below with reference to the power supply control method according to the embodiment of the disclosure. Fig. 9 shows a graph of mains price versus time, showing times for trough, flat and peak segments of the mains price; FIG. 10 is a graph of voltage at the output of the power module (PSU voltage) versus time; fig. 11 is a diagram illustrating the relationship between the state of the energy storage module and time.

In a first preset time period, for example, 0 to t1 time period, as shown in fig. 9, when the utility power price is in a valley period and the utility power price is low, the output terminal of the power module 10 is controlled to output a first interval voltage (for example, 48V) and provide the operating voltage to the server 20. At the time period of 0 to t1, the acquired voltage at the output end 12 is at a first interval voltage, as shown in fig. 10, and the electric quantity of the energy storage module 30 is less than 100%, the discharging loop of the energy storage module 30 is controlled to be closed, and the charging loop is controlled to be opened, as shown in fig. 11, the first interval voltage output by the output end of the power supply module 10 charges the energy storage module 30 through the charging loop. At the time t5(t5 < t1) of the first preset time period, the energy storage module 30 is charged completely, the charging circuit of the energy storage module 30 is controlled to be closed, and the discharging circuit of the energy storage module 30 is controlled to be opened, or the charging circuit of the energy storage module 30 is controlled to be closed, and the discharging circuit of the energy storage module is controlled to be closed. Since the utility power price is still in the valley period at the time period from t5 to t1, the energy storage module 30 is neither charged nor discharged, and the power supply module 10 provides the operating voltage to the server.

It should be noted that, if the acquired voltage at the output end is in the first interval voltage, but the electric quantity of the energy storage module 30 is equal to 100%, then the energy storage module 30 is neither charged nor discharged. Although the discharge loop of the energy storage module 30 is opened during the time period from t5 to t1, since the voltage discharged by the energy storage module 30 is the third interval voltage (e.g., 47.5V), and the third interval voltage is smaller than the first interval voltage, the output terminal of the power supply module still provides the operating voltage to the server.

When the time t1 comes, that is, during a second preset time period, for example, time t1 to time t6, the utility power price is at a peak, as shown in fig. 9, the utility power price is higher, and the output end of the power module 10 is controlled to output a second interval voltage (for example, 47V). At the time period from t1 to t6, the voltage of the output end of the power module 10 is obtained to be at the second interval voltage, as shown in fig. 10, and the electric quantity of the energy storage module 30 is greater than the electric quantity threshold (for example, 25% of the total electric quantity of the energy storage module), the charging loop of the energy storage module 30 is controlled to be closed, and the discharging loop of the energy storage module 30 is controlled to be opened, as shown in fig. 11, the energy storage module 30 discharges, and the voltage output by the energy storage module 30 is the third interval voltage (for example, 47.5V). Since the third interval voltage is greater than the second interval voltage, the third interval voltage output by the energy storage module 30 is provided to the server. In the discharging process of the energy storage module 30, the electric quantity of the energy storage module 30 may be obtained in real time, for example, at a time t6(t6< t2), the electric quantity of the energy storage module 30 is equal to or smaller than an electric quantity threshold, at this time, the voltage at the output end of the power supply module 10 needs to be obtained, if the voltage at the output end of the power supply module 10 is the second interval voltage, it indicates that the mains power supply is normal, and the power failure condition does not occur, then the energy storage module 30 is controlled to stop discharging, that is, at the time t6, the discharging loop and the charging loop of the energy storage module 30 are closed, and the second interval voltage is provided to the server 20 by the output end of the power supply module 30, so that the server 20 operates. Then, in the time period from t6 to t2, the output end of the power module provides the second interval voltage to the server for the server 20 to work, while the energy storage module 30 is neither charged nor discharged, and the electric quantity of the energy storage module 30 is maintained at the electric quantity threshold.

It should be noted that, at the time period from t6 to t2, the voltage of the output end 12 of the power module 10 may be obtained in real time, and if the obtained voltage of the output end 12 of the power module 10 is smaller than the voltage in the second interval, it indicates that the commercial power is powered down. Under the condition of mains supply power failure, even if the electric quantity of the energy storage module 10 is equal to or less than the electric quantity threshold value, the charging loop of the energy storage module 10 still needs to be controlled to be closed, the discharging loop of the energy storage module 10 needs to be controlled to be opened, and the energy storage module 10 discharges to provide a third interval voltage for the server 20 to work.

At the time period t 2-t 3, the commercial power price is in a flat section, the time period belongs to a first preset time period, and the working principle of the power supply system is the same as that of the time period 0-t 1, which is not described herein again.

At the time stage t 3-t 4, the commercial power price is in the peak section, the time stage belongs to a second preset time stage, and the working principle of the power supply system is the same as that of the time stage t 1-t 2, which is not described herein again.

According to the data center power supply system and the power supply control method thereof, mains supply is adopted to supply power to the server in the valley section and/or the flat section of the mains supply price and charge the energy storage module; at the peak section of the commercial power price, the energy storage module is adopted to supply power for the server, the low price of the commercial power price at the valley section and the flat section is fully utilized, and the cost of a power supply system is greatly reduced. And, under the condition that the commercial power is lost, the energy storage module can supply power to the server in time, and the effect of an uninterrupted power supply is achieved.

The embodiment of the disclosure further provides a power supply control device of a data center power supply system, which includes a control circuit for implementing the power supply control method in any embodiment of the disclosure.

An embodiment of the present disclosure further provides a control device, including: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the power supply control method in any of the embodiments of the present disclosure.

The embodiment of the present disclosure further provides a data center, including at least one of the following: the data center power supply system in any embodiment of the present disclosure, the power supply control device in any embodiment of the present disclosure, and the control device in any embodiment of the present disclosure.

In the technical scheme of the disclosure, the acquisition, storage, application and the like of the personal information of the related user all accord with the regulations of related laws and regulations, and do not violate the good customs of the public order.

FIG. 12 illustrates a schematic block diagram of an example control device 1200 that can be used to implement embodiments of the present disclosure. The control device is intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The control device may also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be examples only, and are not meant to limit implementations of the disclosure described and/or claimed herein.

As shown in fig. 12, the apparatus 1200 includes a computing unit 1201 which can perform various appropriate actions and processes in accordance with a computer program stored in a Read Only Memory (ROM)1202 or a computer program loaded from a storage unit 1208 into a Random Access Memory (RAM) 1203. In the RAM 1203, various programs and data required for the operation of the device 1200 may also be stored. The computing unit 1201, the ROM 1202, and the RAM 1203 are connected to each other by a bus 1204. An input/output (I/O) interface 1205 is also connected to bus 1204.

Various components in the device 1200 are connected to the I/O interface 1205 including: an input unit 1206 such as a keyboard, a mouse, or the like; an output unit 1207 such as various types of displays, speakers, and the like; a storage unit 1208, such as a magnetic disk, optical disk, or the like; and a communication unit 1209 such as a network card, modem, wireless communication transceiver, etc. The communication unit 1209 allows the device 1200 to exchange information/data with other devices via a computer network such as the internet and/or various telecommunication networks.

The computing unit 1201 may be a variety of general purpose and/or special purpose processing components having 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 specialized Artificial Intelligence (AI) computing chips, various computing units running machine learning model algorithms, a Digital Signal Processor (DSP), and any suitable processor, controller, microcontroller, and so forth. The calculation unit 1201 executes the respective methods and processes described above, such as the power supply control method. For example, in some embodiments, the power control method may be implemented as a computer software program tangibly embodied on 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 onto the device 1200 via the ROM 1202 and/or the communication unit 1209. When the computer program is loaded into the 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).

Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuitry, Field Programmable Gate Arrays (FPGAs), Application Specific Integrated Circuits (ASICs), Application Specific Standard Products (ASSPs), system on a chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs that are executable and/or interpretable on a programmable system including at least one programmable processor, which may be special or general purpose, receiving data and instructions from, and transmitting data and instructions to, a storage system, at least one input device, and at least one output device.

Program code for implementing the methods of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the program codes, when executed by the processor or controller, cause the functions/operations specified in the flowchart and/or block diagram to be performed. The program code may execute entirely on the machine, partly on the machine, as a stand-alone software package partly on the machine and partly on a remote machine or entirely on the remote machine or server.

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

To provide for interaction with a user, the systems and techniques described here can be implemented on a computer having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) by which a user can provide input to the computer. Other kinds of devices may also be used to provide for interaction with a 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 may be received in any form, including acoustic, speech, or tactile input.

The systems and techniques described here can be implemented in a computing system that includes a back-end component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such back-end, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), Wide Area Networks (WANs), and the Internet.

The computer system may include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server may be a cloud server, a server of a distributed system, or a server with a combined blockchain.

It should be understood that various forms of the flows shown above may be used, with steps reordered, added, or deleted. For example, the steps described in the present disclosure may be executed in parallel, sequentially, or in different orders, as long as the desired results of the technical solutions disclosed in the present disclosure can be achieved, and the present disclosure is not limited herein.

The above detailed description should not be construed as limiting the scope of the disclosure. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present disclosure should be included in the scope of protection of the present disclosure.

Claims (10)

1. A data center power supply system comprising:

the power supply module comprises an input end and an output end, wherein the input end is used for connecting an input power supply;

at least one server, all connected to the output end;

the energy storage module comprises a bidirectional direct current converter, a battery pack loop and a battery management unit, wherein a first side port of the bidirectional direct current converter is connected with the output end, a second side port of the bidirectional direct current converter is connected with the battery pack loop, a control end of the bidirectional direct current converter is connected with the battery management unit, and the battery management unit is used for controlling the current flowing 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 discharge the battery pack loop to the server.

2. The power supply system of claim 1, wherein the output is connected to the server via a power bus, the power supply system further comprising a hot swap connector, the hot swap connector comprising a pair of power pins, the first side port of the bidirectional dc converter being connected to the power bus via the pair of power pins of the hot swap connector.

3. The power supply system according to claim 2, wherein the hot plug connector comprises a first connector and a second connector which are opposite to each other, a pair of control pins of the first connector are shorted by a shorting wire, a pair of control pins of the second connector are respectively connected with the battery management unit, and the battery management unit is further configured to turn on the bidirectional dc converter in a current limiting mode when the second connector is connected with the first connector.

4. A power supply system according to claim 3, wherein the battery management unit is further adapted to switch off the bidirectional dc converter in a current limiting mode if the second connector is disconnected from the first connector.

5. The power supply system of claim 1, wherein the operating voltage of the server is 48 vdc.

6. A power supply system according to claim 1, wherein the number of energy storage modules is equal to or greater than the number of servers, there being at least one corresponding energy storage module for each server.

7. The power supply system of any of claims 1-6, wherein the battery circuit comprises a lithium battery pack, and the battery management unit is further configured to collect status parameters of the lithium battery pack.

8. The power supply system according to claim 7, further comprising a status indication module, wherein the status indication module is connected to the battery management unit, and the battery management unit is further configured to control the status indication module to perform status indication according to the status parameter of the lithium battery pack.

9. The power supply system of claim 7, further comprising a voltage detection module, wherein the voltage detection module is connected to an output terminal of the power module, the voltage detection module is connected to the battery management unit, and the battery management unit is further configured to collect a voltage at the output terminal through the voltage detection module.

10. A data center comprising the power supply system of any one of claims 1-9.

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