CN218386934U - Power supply system of data center and data center - Google Patents

Abstract

The embodiment of the application provides a power supply system of a data center and the data center, relates to the technical field of power supply, and particularly relates to the power supply system and the data center under application scenes such as cloud computing, cloud storage, big data, deep learning and image processing. Wherein, data center's power supply system includes: the high-voltage direct-current power supply module is used for converting input alternating current into direct current and outputting the direct current to the direct current bus; a first battery module; the connecting branch is connected between the first battery module and the direct current bus, and is disconnected under the condition that the direct current voltage output by the high-voltage direct current power supply module is higher than the direct current voltage of the first battery module; and under the condition that the direct-current voltage output by the high-voltage direct-current power supply module is lower than the direct-current voltage of the first battery module, the connecting branch is electrically conducted in the discharging direction of the first battery module. The technical scheme of the embodiment of the application can ensure the power supply continuity of the load, and has the advantages of simple structure, lower cost and smaller occupied space.

Description

Power supply system of data center and data center

Technical Field

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

Background

Data centers are provided with numerous loads and therefore require adequate power guarantees. In the related art, under the condition of mains supply power failure, a storage battery of a high-voltage direct-current power supply system is used as a standby power supply to supply power to a load. However, when the storage battery of the high-voltage direct-current power supply system fails, the power supply continuity of the load cannot be ensured, which may cause service interruption and even serious loss.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a power supply system of a data center and the data center, so as to solve or relieve one or more technical problems in the prior art.

As one aspect of the embodiments of the present application, an embodiment of the present application provides a power supply system for a data center, including: the high-voltage direct-current power supply module is used for converting input alternating current into direct current and outputting the direct current to the direct current bus; a first battery module; the connecting branch is connected between the first battery module and the direct current bus, and is disconnected under the condition that the direct current voltage output by the high-voltage direct current power supply module is higher than the direct current voltage of the first battery module; and under the condition that the direct-current voltage output by the high-voltage direct-current power supply module is lower than the direct-current voltage of the first battery module, the connecting branch is electrically conducted in the discharging direction of the first battery module.

In one embodiment, a semiconductor switch is disposed on the connecting branch, the semiconductor switch being configured to: the direct current power supply module is disconnected under the condition that the direct current voltage output by the high-voltage direct current power supply module is higher than the direct current voltage of the first battery module; and the direct current power supply module is conducted under the condition that the direct current voltage output by the high-voltage direct current power supply module is lower than the direct current voltage of the first battery module.

In one embodiment, the semiconductor switch is a diode.

In one embodiment, the connection branch is electrically conducted in the discharging direction of the first battery module when the dc voltage output by the high-voltage dc power supply module is lower than the dc voltage of the first battery module and the voltage difference is greater than or equal to the conducting voltage of the diode.

In one embodiment, the direct current bus and the connecting branches are in one-to-one correspondence, and the connecting branches are isolated from each other.

In one embodiment, the number of connecting branches in the conducting state is less than or equal to 3.

In one embodiment, the first battery module is in a float charge state or a uniform charge state when the connection branch is in the disconnection state.

In one embodiment, the power supply system of the data center further comprises: the current detection device is arranged on the connecting branch and used for detecting the branch current on the connecting branch; and the protection device is arranged on the connecting branch and used for disconnecting the connecting branch under the condition that the branch current is greater than the preset current value.

In one embodiment, the high-voltage direct-current power supply module comprises a power conversion module and a second battery module, wherein an input end of the power conversion module is used for connecting an alternating-current power supply, a first output end of the power conversion module is connected to a direct-current bus, a second output end of the power conversion module is connected to an input end of the second battery module, and an output end of the second battery module is connected to the direct-current bus.

In one embodiment, the power supply system of the data center further includes: the rectifying module is connected to the input end of the first battery module and used for converting the input alternating current into direct current and outputting the direct current to the first battery module; and the voltage stabilizing module is connected to the output end of the first battery module and used for converting the output voltage of the first battery module into a preset voltage.

As another aspect of the present application, an embodiment of the present application provides a data center including the power supply system according to any one of the above first aspect of the present application.

This application embodiment is through setting up first battery module and connecting the branch road of being connected between first battery module and direct current bus, the branch road of being connected can break off under the normal condition of direct current voltage of high voltage direct current power supply module output, thereby supply power for the load through high voltage direct current power supply module, and can realize the conductance between first battery module and the direct current bus under the too low condition of direct current voltage of high voltage direct current power supply module output and lead to, thereby supply power for the load through first battery module, can guarantee the power supply continuity to the load, and power supply system's structure is simpler, the cost is lower, and occupation space is little.

The foregoing summary is provided for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present application will be readily apparent by reference to the drawings and following detailed description.

Drawings

In the drawings, like reference numerals refer to the same or similar parts or elements throughout the several views unless otherwise specified. The figures are not necessarily to scale. It is appreciated that these drawings depict only some embodiments in accordance with the disclosure and are therefore not to be considered limiting of its scope.

Fig. 1 shows a schematic structural diagram of a power supply system of a data center according to an embodiment of the present application;

fig. 2 shows a schematic structural diagram of a power supply system of a data center according to another embodiment of the present application;

fig. 3 shows a schematic structural diagram of a power supply system of a data center according to yet another embodiment of the present application;

fig. 4 shows a block diagram of a data center according to an embodiment of the present application.

Description of the reference numerals:

10: a power supply system;

100: a high-voltage direct-current power supply module; 110: a direct current bus; 111: a positive DC bus; 112: a negative DC bus; 120: a power conversion module; 130: a second battery module; 200: a first battery module; 300: connecting the branch circuits; 310: a semiconductor switch; 320: the positive electrode is connected with the branch circuit; 330: a negative electrode connecting branch; 400: a rectification module; 500: a voltage stabilization module;

20: a data center.

Detailed Description

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present application. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

In the related art, in order to ensure the continuity of Power Supply to a load, a Power Supply system of a part of data centers employs two Power Supply and distribution units, each Power Supply and distribution unit includes multiple UPS (Uninterruptible Power Supply) devices, and the two Power Supply and distribution units work simultaneously and are mutually standby. In the case where two power supply and distribution units are normally operated, each power supply and distribution unit supplies 50% of power to a load, and in the case where one power supply and distribution unit is stopped from operating due to a fault, the other power supply and distribution unit supplies 100% of power to the load. However, such a power supply system is complicated in structure, high in cost, and large in occupied space.

Based on this, the application provides a power supply system, through setting up first battery module and connecting the branch road of connection between first battery module and DC bus, the branch road of connection can break off under the normal condition of the direct current voltage of high voltage direct current power supply module output, thereby supply power for the load through high voltage direct current power supply module, and can realize the electric conductance between first battery module and the DC bus under the too low condition of direct current voltage of high voltage direct current power supply module output and pass through, thereby supply power for the load through first battery module, can guarantee the power supply continuity to the load, and compare in the power supply system who adopts two power supply distribution units among the prior art, the structure is simpler, the cost is lower, and occupation space is little.

The power supply system can be used for a data center, and the data center can be used in application scenes such as cloud computing, cloud storage, big data computing, deep learning and image processing.

A power supply system of a data center according to an embodiment of the first aspect of the present application is described below with reference to fig. 1 to 3. As shown in fig. 1, a power supply system 10 according to an embodiment of the present disclosure includes a high-voltage dc power supply module 100, a first battery module 200, and a connection branch 300.

Specifically, the high-voltage dc power supply module 100 is configured to convert the input ac power into dc power and output the dc power to the dc bus 110. The connection branch 300 is connected between the first battery module 200 and the dc bus 110, and when the dc voltage output by the high-voltage dc power supply module 100 is higher than the dc voltage of the first battery module 200, the connection branch 300 is in a disconnected state; when the dc voltage output by the high-voltage dc power supply module 100 is lower than the dc voltage of the first battery module 200, the connecting branch 300 is electrically conducted in the discharging direction of the first battery module 200.

In the power supply system, the "dc bus" refers to a line that distributes dc power to other load lines. In this embodiment, the input end of the dc bus 110 is connected to the high voltage dc power supply module 100, and the output end of the dc bus 110 can be connected to a plurality of loads, so as to distribute the electric energy of the high voltage dc power supply module 100 to the plurality of loads.

It should be noted that "the connection branch 300 is in the disconnected state" may be understood as that no current passes through the connection branch 300. The phrase "the connecting branch 300 is electrically conducted in the discharging direction of the first battery module 200" can be understood that current passes through the connecting branch 300, and the current direction on the connecting branch 300 is the same as the discharging direction of the first battery module 200, that is, the current direction on the connecting branch 300 is the current direction of the first battery module 200 in the discharging process.

For example, when the high-voltage dc power supply module 100 is in a normal operating state, the dc voltage output by the high-voltage dc power supply module 100 is higher than the dc voltage of the first battery module 200, and at this time, the connection branch 300 is in a disconnected state to block the electrical conduction between the first battery module 200 and the dc bus 110, so as to perform an electrical isolation function, and the dc power output by the high-voltage dc power supply module 100 is input to a load through the dc bus 110, so that the high-voltage dc power supply module 100 supplies power to the load such as a server.

When the high-voltage dc power supply module 100 is in an abnormal operating state, which causes the dc voltage output by the high-voltage dc power supply module 100 to be lower than the dc voltage of the first battery module 200, the connection branch 300 is turned into a conduction state, so that the first battery module 200 and the dc bus 110 are electrically conducted in the discharging direction of the first battery module 200. At this time, the first battery module 200 is in a discharge state, and the current output by the first battery module 200 is input to the load through the connecting branch 300 and the dc bus 110, so that the first battery module 200 supplies power to the load, and continuous and stable operation of the load is ensured.

Under the condition that the high-voltage dc power supply module 100 is restored to the normal operating state again, the dc voltage input by the high-voltage dc power supply module 100 is higher than the dc voltage of the first battery module 200 again, and at this time, the connection branch 300 is turned to the disconnected state, so that the high-voltage dc power supply module 100 supplies power to the load.

For example, the dc bus 110 may include a positive dc bus 111 and a negative dc bus 112. The connecting legs 300 may include a positive connecting leg 320 and a negative connecting leg 330. The positive connection branch 320 is connected between the first battery module 200 and the positive dc bus 111, and the negative connection branch 330 is connected between the first battery module 200 and the negative dc bus 112. Under the condition that the connecting branch 300 is in the disconnected state, the high-voltage direct-current power supply module 100 forms a power supply loop with the load through the positive direct-current bus 111 and the negative direct-current bus 112, so as to supply power to the load; when the connection branch 300 is in the on state, the first battery module 200 forms a power supply loop with the load through the positive connection branch 320, the positive dc bus 111, the negative dc bus 112, and the negative connection branch 330, so as to supply power to the load.

According to the power supply system 10 of the data center in the embodiment of the application, by arranging the above-mentioned high-voltage dc power supply module 100, the first battery module 200 and the connection branch 300, the connection branch 300 can be disconnected under the condition that the dc voltage output by the high-voltage dc power supply module 100 is normal, so as to supply power to the load through the high-voltage dc power supply module 100, and can realize the electric conduction between the first battery module 200 and the dc bus 110 under the condition that the dc voltage output by the high-voltage dc power supply module 100 is too low, so as to supply power to the load through the first battery module 200, ensure the power continuity of the load, enable the load to continuously and stably operate, and avoid the loss. Moreover, since the connection branch 300 is only electrically conducted in the discharging direction of the first battery module 200, the influence on the high-voltage dc power supply module 100 can be avoided, and the safety is higher. In addition, the first battery module 200 and the connecting branch 300 have simpler structures, lower cost and smaller occupied space, so that the physical space requirement on a data center machine room can be reduced, and the reconstruction and the upgrade can be implemented on the basis of the built data center machine room.

In one embodiment, as shown in fig. 2 and 3, a semiconductor switch 310 is disposed on the connection branch 300, and the semiconductor switch 310 is configured to: the high-voltage direct-current power supply module 100 is disconnected when the direct-current voltage output by the high-voltage direct-current power supply module is higher than the direct-current voltage of the first battery module 200; and the high-voltage direct-current power supply module 100 is turned on when the output direct-current voltage is lower than the direct-current voltage of the first battery module 200.

For example, the action switching time of the semiconductor switch 310 for turning off and on may be in the order of microseconds, and the action switching time is illustrated within 10 microseconds. When the dc voltage output by the high-voltage dc power supply module 100 is reduced to be lower than the dc voltage of the first battery module 200, the semiconductor switch 310 may sense the drop of the dc voltage output by the high-voltage dc power supply module 100, and rapidly switch from the off state to the on state within 10 microseconds, so as to supply power to the load through the first battery module 200. When the dc voltage output by the high-voltage dc power supply module 100 is restored to be higher than the dc voltage of the first battery module 200, the semiconductor switch 310 can sense the increase of the dc voltage output by the high-voltage dc power supply module 100, and rapidly switch from the on state to the off state within 10 microseconds. Since the allowable power interruption time of the load is usually 10 ms, the microsecond action switching time of the semiconductor switch 310 can realize the non-inductive power supply switching of the load, and ensure the power supply continuity of the load.

In this embodiment, by arranging the semiconductor switch 310 on the connection branch 300, on one hand, the semiconductor switch 310 has high sensitivity and fast response speed, and can enable the connection branch 300 to be rapidly switched between the off state and the on state, so as to rapidly switch the power supply of the load, avoid the power interruption of the load, and achieve continuous and stable power supply of the load; on the other hand, the semiconductor switch 310 is small and light, and is more conveniently disposed on the connection branch 300.

In another embodiment, a mechanical switch with a response speed meeting a preset speed requirement may be further disposed on the connecting branch 300, and the mechanical switch is also configured to: the high-voltage direct-current power supply module 100 is disconnected when the direct-current voltage output by the high-voltage direct-current power supply module is higher than the direct-current voltage of the first battery module 200; and the high-voltage direct-current power supply module 100 is turned on when the output direct-current voltage is lower than the direct-current voltage of the first battery module 200.

For example, the power supply system 10 may include a voltage detection module for detecting the dc voltage output by the high voltage dc power supply module 100 and the dc voltage of the first battery module 200 and transmitting a voltage signal to the control module, and a control module. Under the condition that the direct current voltage output by the high-voltage direct current power supply module 100 is higher than the direct current voltage of the first battery module 200, the control module controls the mechanical switch to be switched off; under the condition that the dc voltage output by the high voltage dc power supply module 100 is lower than the dc voltage of the first battery module 200, the control module controls the mechanical switch to be turned on. By such an arrangement, the connection branch 300 can be switched between the off state and the on state quickly, and the power supply continuity of the load is ensured.

In one embodiment, the semiconductor switch 310 may be a diode.

Illustratively, the number of diodes on each connection leg 300 may be one or more. For example, in the examples of fig. 2 and 3, two diodes are respectively disposed on each of the connecting branches 300. Each positive connecting branch 320 is provided with a diode, and each negative connecting branch 330 is provided with a diode. Thus, when one of the diodes on each connection branch 300 fails (for example, short circuit occurs abnormally), the other diode can still work normally, and it is ensured that the corresponding connection branch 300 can switch on-off states in time, so that normal power supply of a load is ensured, and short circuit or overcurrent can be avoided. Of course, both diodes may be disposed on the positive connection branch 320 or both diodes may be disposed on the negative connection branch 330, which is not limited in this embodiment.

In one embodiment, when the dc voltage output by the high-voltage dc power supply module 100 is lower than the dc voltage of the first battery module 200 and the voltage difference is greater than or equal to the turn-on voltage of the diode, the connection branch 300 is electrically turned on in the discharging direction of the first battery module 200.

For example, when the dc voltage output by the high-voltage dc power supply module 100 is lower than the dc voltage of the first battery module 200, the following two cases are included: the difference between the dc voltage of the first battery module 200 and the dc voltage output by the high-voltage dc power supply module 100 is smaller than the diode conducting voltage. At this time, the diode is turned off, and the high voltage dc power supply module 100 supplies power to the load. The difference between the dc voltage of the second and first battery modules 200 and the dc voltage output by the high-voltage dc power supply module 100 is greater than or equal to the diode conduction voltage. At this time, the diode is unidirectionally conducted in the discharging direction of the first battery module 200, and the first battery module 200 is discharged, thereby supplying power to the load.

Of course, the semiconductor switch 310 is not limited to being a diode. It is understood that the specific type of the semiconductor switch 310 may be specifically determined according to actual requirements to better satisfy the actual application.

In one embodiment, referring to fig. 1, the dc bus bar 110 and the connecting branches 300 are provided in a one-to-one correspondence, and the connecting branches 300 are isolated from each other. In the description of the present application, "a plurality" means two or more.

Illustratively, a plurality of high-voltage direct-current power supply modules 100 correspond to the direct-current buses 110 one by one, that is, one high-voltage direct-current power supply module 100 corresponds to one direct-current bus 110, that is, one high-voltage direct-current power supply module 100 corresponds to one positive direct-current bus 111 and one negative direct-current bus 112. The plurality of high-voltage direct-current power supply modules 100 may be independently arranged, so that each high-voltage direct-current power supply module 100 may respectively supply power to a corresponding load, and when a part of the plurality of high-voltage direct-current power supply modules 100 fails, the failed high-voltage direct-current power supply module 100 may be directly repaired or replaced without affecting other high-voltage direct-current power supply modules 100.

Exemplarily, two high-voltage dc power supply modules 100, two dc busbars 110 and two connecting branches 300 are shown in fig. 1, and each connecting branch 300 is connected between a first battery module 200 and a corresponding dc busbar 110. For convenience of description, the two high-voltage dc power supply modules 100 are referred to as a first high-voltage dc power supply module and a second high-voltage dc power supply module, and the two connection branches 300 are referred to as a first connection branch and a second connection branch. Under the condition that the direct current voltage output by the first high-voltage direct current power supply module is higher than the direct current voltage of the first battery module 200, and the direct current voltage output by the second high-voltage direct current power supply module is lower than the direct current voltage of the first battery module 200, the second connecting branch is rapidly switched to be in a conducting state, and the first connecting branch keeps in a disconnected state; under the condition that the direct-current voltage output by the first high-voltage direct-current power supply module is lower than the direct-current voltage of the first battery module 200 and the direct-current voltage output by the second high-voltage direct-current power supply module is higher than the direct-current voltage of the first battery module 200, the first connecting branch is rapidly switched to be in a conducting state, and the second connecting branch is kept in a disconnecting state; under the condition that the dc voltages output by the first and second high-voltage dc power supply modules are lower than the dc voltage of the first battery module 200, the first and second connection branches are switched to the on state.

In this embodiment, by isolating the plurality of connection branches 300 from each other, a local short circuit or an overcurrent can be avoided, and the safety of the entire power supply system 10 is improved. In addition, a plurality of high voltage direct current power supply modules 100 only need to set up a first battery module 200 as the back-up power supply, in the transformation process, only need newly increase a set of battery module in each battery room, and the space is sufficient, and the cable is laid and can be gone on at the battery room entirely, and is less to IT business influence.

Two high voltage dc power supply modules 100, two dc buses 110 and two connecting branches 300 are shown in fig. 1-3 for illustrative purposes, but it is obvious to those skilled in the art after reading the technical solution of the present application that the solution can be applied to other numbers of high voltage dc power supply modules 100, dc buses 110 and connecting branches 300, which also falls within the protection scope of the present application.

In one embodiment, the number of the connection branches 300 in the conducting state is N, where N ≦ 3, i.e., N may be 0, 1, 2, or 3. Illustratively, the high voltage dc power supply module 100 outputting a dc voltage lower than the dc voltage of the first battery module 200 is determined to be an abnormal high voltage dc power supply module. Under the condition that the number of the abnormal high-voltage direct-current power supply modules is less than or equal to 3, all the connecting branches 300 corresponding to all the abnormal high-voltage direct-current power supply modules are electrically conducted; and under the condition that the number of the abnormal high-voltage direct-current power supply modules is more than 3, the connecting branches 300 corresponding to part of the abnormal high-voltage direct-current power supply modules are electrically conducted. By such an arrangement, the power supply system 10 can be prevented from running too complicated, the power supply system 10 can be prevented from running in an overload manner, and the safety of the power supply system 10 is improved.

In one embodiment, the first battery module 200 is in a float state or a uniform charge state when the connection branch 300 is in the open state.

For example, under the condition that the high voltage dc power supply module 100 works normally, the high voltage dc power supply module 100 supplies power to the load, and at this time, the first battery module 200 may be in a floating state, so that the first battery module 200 may keep a charging satisfaction state without overcharging; when the high-voltage direct-current power supply module 100 works abnormally and the direct-current voltage output by the high-voltage direct-current power supply module 100 is lower than the direct-current voltage of the first battery module 200, the connecting branch 300 is conducted, and the first battery module 200 is in a discharging state, so that power is supplied to a load; under the condition that the high-voltage direct-current power supply module 100 is recovered to be normal, the connection branch 300 is disconnected, and the first battery module 200 can enter a uniform charging state, so that the electric quantity of the first battery module is kept sufficient, and the first battery module can be used as a backup power supply to supply power to a load under the condition that the high-voltage direct-current power supply module 100 works abnormally.

In one embodiment, the power supply system 10 further includes a current detection device and a protection device (not shown). The current detection device is disposed on the connecting branch 300, and the current detection device is configured to detect a branch current on the connecting branch 300. The protection device is disposed on the connection branch 300, and the protection device is configured to disconnect the connection branch 300 when the branch current is greater than a preset current value.

In one example, the protection device may be a fuse device. For example, when a short-circuit fault occurs in a diode of the connection branch 300, the output terminals of two adjacent high-voltage dc power supply modules 100 are short-circuited, and when a voltage difference exists between two adjacent high-voltage dc power supply modules 100, the branch current is greater than a preset current value, and the fuse device generates a large amount of heat to rapidly melt the temperature of the branch current to the melting point, so as to disconnect the connection branch 300 and perform a safety function.

In one example, the protection device may be a circuit breaker. For example, if the dc voltages output by the plurality of high-voltage dc power supply modules 100 are all lower than the dc voltage of the first battery module 200, if the connection branches 300 corresponding to the plurality of high-voltage dc power supply modules 100 are all turned on, an overcurrent risk may occur in the first battery module 200. When the first battery module 200 is in an overcurrent state, the branch current is greater than the preset current value, and the circuit breaker is turned off, so that the corresponding connection branch 300 is disconnected. In addition, the circuit breaker can also be opened before the short-circuit fault occurs in the diode, so as to avoid the short circuit of the output ends of two adjacent high-voltage direct-current power supply modules 100.

In this embodiment, by providing the current detection device and the protection device, the first battery module 200 can be prevented from overcurrent, so that safety accidents can be avoided while the operation safety and stability of the load are ensured, and the safety and reliability of the whole power supply system 10 are improved.

Optionally, the power supply system 10 may further include a short-circuit protection device, an overvoltage protection device, an undervoltage protection device, and the like, so as to further improve the safety of the power supply system 10.

In one embodiment, as shown in fig. 2 and 3, the high voltage dc power supply module 100 includes a power conversion module 120 and a second battery module 130, an input end of the power conversion module 120 is connected to an ac power source, a first output end of the power conversion module 120 is connected to the dc bus 110, a second output end of the power conversion module 120 is connected to an input end of the second battery module 130, and an output end of the second battery module 130 is connected to the dc bus 110.

The ac power source may be, for example, commercial power. Under the condition that the utility power is normal, the power conversion module 120 and the second battery module 130 are both in a normal working state, at this time, the ac output by the utility power is input to the power conversion module 120, the power conversion module 120 converts the input ac into dc and outputs the dc to supply power to the load, and simultaneously charges the second battery module 130, and at this time, the dc voltage input to the dc bus 110 is higher than the dc voltage of the first battery module 200. Under the condition that the utility power is cut off and the second battery module 130 is in the normal working state, the second battery module 130 discharges, and the second battery module 130 outputs the direct current to the direct current bus 110 to supply power to the load. Under the condition that the utility power is cut off and the second battery module 130 fails, for example, when the second battery module 130 has an instantaneous open-circuit fault, the voltage output to the dc bus 110 is rapidly reduced to be lower than the dc voltage of the first battery module 200, and at this time, the connecting branch 300 is rapidly conducted to supply power to the load through the first battery module 200; when the capacity of the second battery module 130 is insufficient, the voltage output to the dc bus 110 is gradually decreased to be lower than the dc voltage of the first battery module 200 along with the discharge of the second battery module 130, and the connection branch 300 can be quickly conducted to supply power to the load through the first battery module 200.

Exemplarily, the high voltage dc power supply module 100 may further include an ac power distribution unit, a dc power distribution unit, a battery management unit, a monitoring module, and the like. The ac power distribution unit is configured to distribute ac power input from an ac power source to the power conversion module 120, and the dc power distribution unit is configured to distribute dc power converted by the power conversion module 120 to a load and the second battery module 130. The battery management unit can monitor parameters such as the terminal voltage of each battery in the second battery module 130, the internal resistance of the second battery module 130, the terminal voltage of the second battery module 130, the charging and discharging current and the temperature in real time, and send the parameters to the monitoring module.

In this embodiment, the second battery module 130 can be used as a backup power source to supply power to the load when the ac power source is abnormal, and can be used as a backup power source to supply power to the load when the ac power source is abnormal and the second battery module 130 fails. Furthermore, since the connection branches 300 can be electrically conducted only in a single direction in the discharge direction of the first battery module 200, it is possible to prevent the second battery module 130 from being affected, and the structure is more reliable.

In one embodiment, as shown in fig. 3, the power supply system 10 further includes a rectifying module 400 and a voltage stabilizing module 500. The rectifying module 400 is connected to an input end of the first battery module 200, and the rectifying module 400 is configured to convert input ac power into dc power and output the dc power to the first battery module 200. The voltage stabilizing module 500 is connected to an output end of the first battery module 200, and the voltage stabilizing module 500 is configured to convert an output voltage of the first battery module 200 into a preset voltage. The rectifying module 400 may be an AC/DC module, and the voltage stabilizing module 500 may be a DC/DC module, so as to convert an unstable DC voltage into a stable preset voltage and output the stable preset voltage.

Illustratively, the power supply system 10 may include a power control cabinet, a transfer isolation device, and a quick connect port. The power control cabinet is internally provided with the rectifying module 400 and the voltage stabilizing module 500. The rectifying module 400 may perform charge and discharge management on the first battery module 200. The switching isolating device can realize isolation among different connecting branches 300, avoid local short circuit or overcurrent, realize quick installation butt joint among components through the quick connection port, and can play the effects of firm installation and convenient wiring.

A data center 20 according to an embodiment of the second aspect of the present application, as shown in fig. 4, includes a power supply system 10 according to any one of the above-described embodiments of the first aspect of the present application.

According to the data center 20 of the embodiment of the application, by adopting the power supply system 10, the electrical conduction between the first battery module 200 and the dc bus 110 can be realized under the condition that the dc voltage output by the high-voltage dc power supply module 100 is too low, so that the load is supplied with power through the first battery module 200, the power supply of the load is switched without sensing, the power supply continuity of the load is ensured, the load can continuously and stably operate, the loss is avoided, the structure is simpler, the cost is lower, the occupied space is smaller, the physical space requirement on a data center machine room can be reduced, and the modification and the upgrade can be implemented on the basis of the built data center machine room.

Other configurations of the power supply system 10 and the data center 20 of the above-described embodiments may be adopted by various technical solutions known to those skilled in the art now and in the future, and will not be described in detail herein.

In the description of the present specification, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. The first feature being "under," "beneath," and "under" the second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

The above disclosure provides many different embodiments or examples for implementing different structures of the application. The components and arrangements of specific examples are described above to simplify the present disclosure. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.

While the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (11)

1. A power supply system for a data center, comprising:

the high-voltage direct-current power supply module is used for converting input alternating current into direct current and outputting the direct current to the direct current bus;

a first battery module;

the connecting branch is connected between the first battery module and the direct current bus, and is disconnected under the condition that the direct current voltage output by the high-voltage direct current power supply module is higher than the direct current voltage of the first battery module; and under the condition that the direct-current voltage output by the high-voltage direct-current power supply module is lower than the direct-current voltage of the first battery module, the connecting branch circuit is electrically conducted in the discharging direction of the first battery module.

2. The power supply system of the data center according to claim 1, wherein a semiconductor switch is disposed on the connection branch, and the semiconductor switch is configured to: the high-voltage direct current power supply module is disconnected under the condition that the direct current voltage output by the high-voltage direct current power supply module is higher than the direct current voltage of the first battery module; and conducting the direct current power supply module under the condition that the direct current voltage output by the high-voltage direct current power supply module is lower than the direct current voltage of the first battery module.

3. The power supply system of a data center according to claim 2, wherein the semiconductor switch is a diode.

4. The power supply system of the data center according to claim 3, wherein the connecting branch is electrically conducted in a discharging direction of the first battery module when the DC voltage output by the high-voltage DC power supply module is lower than the DC voltage of the first battery module and the voltage difference is greater than or equal to the conducting voltage of the diode.

5. The power supply system of the data center according to claim 1, wherein the dc bus and the connecting branches are in a plurality in one-to-one correspondence, and the plurality of connecting branches are isolated from each other.

6. The power supply system of a data center according to claim 5, wherein the number of the connection branches in the on state is 3 or less.

7. The power supply system of the data center according to claim 1, wherein the first battery module is in a float charge state or an even charge state when the connection branch is in the disconnected state.

8. The power supply system of a data center according to any one of claims 1 to 7, further comprising:

the current detection device is arranged on the connecting branch and used for detecting the branch current on the connecting branch;

and the protection device is arranged on the connecting branch and used for disconnecting the connecting branch under the condition that the branch current is greater than a preset current value.

9. The power supply system of the data center according to any one of claims 1 to 7, wherein the HVDC power supply module comprises a power conversion module and a second battery module, an input end of the power conversion module is used for connecting an alternating current power supply, a first output end of the power conversion module is connected to the direct current bus, a second output end of the power conversion module is connected to an input end of the second battery module, and an output end of the second battery module is connected to the direct current bus.

10. The power supply system of a data center according to any one of claims 1 to 7, further comprising:

the rectifying module is connected to the input end of the first battery module and used for converting the input alternating current into direct current and outputting the direct current to the first battery module;

and the voltage stabilizing module is connected to the output end of the first battery module and used for converting the output voltage of the first battery module into a preset voltage.

11. A data center, characterized in that it comprises a power supply system of a data center according to any one of claims 1-10.

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