CN220570354U - Battery device and power supply system of data center - Google Patents

Abstract

The utility model relates to an energy storage technology and discloses a battery device, which comprises a direct current input end, a control unit, a plurality of electric storage units, a gating module and at least one output unit, wherein the direct current input end is used for being connected with a direct current source of a power supply system, the direct current input end is electrically connected with the input end of each electric storage unit and the output unit through the gating module, the output end of each electric storage unit is electrically connected with the output unit, the output unit is used for being connected with a load, and the communication end and/or the control output end of the control unit are electrically connected with the electric storage unit, the gating module and the output unit. The utility model also provides a power supply system of the data center. The utility model aims to provide a battery device which is convenient for distributed arrangement in a power supply system, and an electric storage unit which is connected with the battery device can be correspondingly increased or decreased according to the actual power supply output requirement of the battery device so as to meet the safety and stability of supplying power to a load.

Description

Battery device and power supply system of data center

Technical Field

The utility model relates to the technical field of energy storage, in particular to a battery device and a power supply system of a data center.

Background

The data center not only needs a large amount of power to maintain the operation of the server, the storage device, the backup device, the cooling system and other devices, but also needs to be provided with a corresponding storage battery in order to prevent the data center from being lost or damaging related devices due to sudden interruption of the supply of the commercial power accessed by the data center, so that the power supply system of the data center can be powered by the storage battery when the power is disconnected from the outside, and the normal operation of the data center is maintained.

At present, in order to meet the huge power supply requirement of a data center, a plurality of storage batteries are often required to be provided, and the storage batteries are connected in series to form a storage battery pack, however, once one storage battery fails, other storage batteries cannot supply power to the data center, if the storage battery fails and fires, other storage batteries are easily involved, other storage batteries are burnt out or short-circuited, and certain equipment loss is caused. However, if the storage battery packs are simply arranged in a scattered manner, the storage capacity of the single storage battery is too low to meet the load power supply.

The foregoing is provided merely for the purpose of facilitating understanding of the technical solutions of the present utility model and is not intended to represent an admission that the foregoing is prior art.

Disclosure of Invention

The utility model provides a battery device and a power supply system of a data center, aiming at providing a battery device which can correspondingly increase or decrease the number of electric storage units according to the actual power supply output requirement of the battery device and realizing power supply complementation among different battery devices in distributed arrangement so as to meet the safety and stability of supplying power to a load.

In order to achieve the above object, the present utility model proposes a battery device, which includes a dc input terminal, a control unit, a plurality of electric storage units, a gating module, and at least one output unit, wherein the dc input terminal is used for accessing a dc source of a power supply system, the dc input terminal is electrically connected to an input terminal of each of the electric storage units and the output unit via the gating module, an output terminal of each of the electric storage units is electrically connected to the output unit, and the output unit is used for accessing a load, and a communication terminal and/or a control output terminal of the control unit are electrically connected to the electric storage units, the gating module, and the output unit; when the battery device inputs electric energy through the direct current input end, the conduction direction of the gating module is the direction from the direct current input end to the output unit; when the battery device outputs electric energy through the direct current input end, the conduction direction of the gating module is the direction from the output unit to the direct current input end.

Optionally, the gating module is a bidirectional voltage transformation unit;

or the gating module is provided with a unidirectional conduction switch and a first unidirectional transformation unit in parallel, wherein the conduction direction of the unidirectional conduction switch is the direction from the direct current input end to the output unit, and the conduction direction of the first unidirectional transformation unit is the direction from the output unit to the direct current input end.

Optionally, the unidirectional conduction switch is a diode;

or, the unidirectional conduction switch is a MOS tube, and the control output end of the control unit is also electrically connected with the control end of the MOS tube.

Optionally, the electric storage unit is connected to the battery device in a detachable electric connection manner.

Optionally, the battery device further includes a first switch module, wherein the gating module is electrically connected to the output unit through the first switch module; the input end and the output end of the electric storage unit are respectively and electrically connected with the two conducting ends of the first switch module; and the control output end of the control unit is electrically connected with the control end of the first switch module.

Optionally, the battery device further includes a second switch module, wherein the dc input terminal is electrically connected to the gating module through the second switch module; and the control output end of the control unit is electrically connected with the control end of the second switch module.

Optionally, the power storage unit includes a second unidirectional voltage transformation unit, a storage battery and a third switch module, where an input end of the second unidirectional voltage transformation unit is an input end of the power storage unit, a charge-discharge end of the storage battery is electrically connected with an output end of the second unidirectional voltage transformation unit and a first conduction end of the third switch module, and a second conduction end of the third switch module is an output end of the power storage unit.

In order to achieve the above object, the present utility model provides a power supply system for a data center, where the power supply system includes a dc source and a plurality of battery devices, the battery devices are the battery devices described above, and the dc source is electrically connected to a dc input terminal of the battery devices.

The technical scheme of the utility model has the beneficial effects that: the battery device is provided, which can be conveniently arranged in a distributed mode in a power supply system, so that when the power supply system loses external energy supply, the battery device which is arranged in a distributed mode continuously maintains normal operation of multiple paths of loads, the danger of high-temperature ignition caused by centralized arrangement of the battery devices can be avoided, even if any battery device fails, other battery devices can not be influenced to continuously supply power to the loads, and the storage capacity of the single battery device can be improved to a certain extent by arranging a plurality of parallel storage units in each battery device, so that the power supply capacity of the battery device can meet the power supply requirement of the loads connected with the battery device as far as possible, the number of the storage units connected with the single battery device can be increased and decreased according to actual conditions when the battery device is used, and when the power supply requirement of the loads connected with the battery device can not be met, the battery device can also acquire power supply through the battery device with surplus power supply capacity of the power supply system so as to supplement the power supply of the power of the battery device (if the power supply capacity of the battery device is also sufficient, and the battery device with insufficient power supply capacity can supply capacity of the battery device), the power supply capacity of the battery device can be distributed to the battery device can be reasonably distributed among the corresponding power supply devices, and the power supply requirements of the battery device can not meet the power supply requirements of the loads can be met, and the power supply requirements of the corresponding power supply device can be reasonably distributed to meet the power supply requirements of the loads.

Drawings

FIG. 1 is a schematic view of a battery device according to an embodiment of the present utility model;

FIG. 2 is a schematic view of another embodiment of a battery device according to the present utility model;

FIG. 3 is a schematic view of a battery device according to another embodiment of the present utility model;

fig. 4 is a schematic structural view of an electric storage unit in an embodiment of the battery device according to the present utility model;

FIG. 5 is a schematic diagram showing another structure of the power storage unit in an embodiment of the battery device according to the present utility model;

fig. 6 is a schematic structural diagram of the power supply system of the present utility model.

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made more clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicators are correspondingly changed.

It will also be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The utility model proposes a battery device, referring to fig. 1, the battery device 10 comprises a direct current input end 11, a control unit 12, a plurality of electric storage units 13, a gating module 14 and at least one output unit 15, wherein the direct current input end 11 is used for being connected with a direct current source 20 of a power supply system, the direct current input end 11 is electrically connected with an input end of each electric storage unit 13 and the output unit 15 through the gating module 14, an output end of each electric storage unit 13 is electrically connected with the output unit 15, the output unit 15 is used for being connected with a load 30, and a communication end and/or a control output end of the control unit 12 are electrically connected with the electric storage units 13, the gating module 14 and the output end; when the battery device 10 inputs electric energy through the direct current input end 11, the conduction direction of the gating module 14 is the direction from the direct current input end 11 to the output unit 15; when the battery device 10 outputs electric energy through the dc input terminal 11, the conduction direction of the gating module 14 is the direction from the output unit 15 to the dc input terminal 11.

In this embodiment, the power supply system may be a power supply system of a data center.

Optionally, the power supply system comprises a direct current source 20 and a plurality of battery means 10. The dc source 20 may be used to access an external energy source (such as ac mains), and convert the external energy source into dc power suitable for the load 30 of the data center, and then output the dc power to each battery device 10.

Alternatively, the dc source 20 may be provided with a plurality of dc outputs, each of which may be electrically connected to one of the battery devices 10.

Alternatively, the battery device 10 shown in fig. 1 may be any battery device 10 provided in the power supply system, and the following description will take any battery device 10 provided in the power supply system as an example; in this case, the number of the electric storage units 13 provided in the battery device 10 is at least two, and the structure shown in fig. 1 is only an exemplary structure and should not be construed as limiting the present embodiment.

Alternatively, the dc input terminal 11 of the battery device 10 is configured to be connected to the dc output terminal of the dc source 20, so that the dc output from the dc output terminal of the dc source 20 can be input to the battery device 10 through the dc input terminal 11 of the battery device 10.

Alternatively, the control unit 12 may be a control system of the battery device 10, or a device having a control function such as a single chip microcomputer. The power supply end of the control unit 12 may be electrically connected to the dc input end 11, or electrically connected to at least one electric storage unit 13, so as to take power from the dc input end 11 or the electric storage unit 13 for the control unit 12 to operate. Optionally, the control unit 12 in the battery device 10 may be configured to monitor and control the battery device 10 to which the control unit belongs (e.g. monitor the storage capacity of the storage unit 13, monitor the current of any circuit of the battery device 10, or control the conduction mode of the switching gate module 14), and take charge of management of the battery device 10 (e.g. control the charging and discharging of each storage unit 13). Wherein a communication end and/or a control output end of the control unit 12 are electrically connected with the electric storage unit 13, the gating module 14 and the output unit 15; the communication end of the control unit 12 is used for communicating with each module and unit in the battery device 10 and communicating with other battery devices 10 connected with the power supply system; the control output terminal of the control unit 12 is used for outputting corresponding control signals to each module and unit in the battery device 10 so as to control each module and unit to work. Further, the control unit 12 may be provided with a plurality of detection terminals for detecting the amount of electricity of the storage battery 132 of each storage unit 13, the current of an arbitrary circuit of the battery device 10, and the like.

Optionally, the first conductive end and the second conductive end of the gating module 14 are two-way conductive ends, the first conductive end is electrically connected to the dc input end 11, and the second conductive end is electrically connected to the input end of the electric storage unit 13 and the output unit 15. In addition, the control output end of the control unit 12 is electrically connected to the control end of the gating module 14, so that the control unit 12 can control the gating module 14 to switch between different conduction modes by outputting corresponding control signals to the gating module 14; the first conduction mode of the gating module 14 is that current flows from the first conduction terminal to the second conduction terminal, and the second conduction mode of the gating module 14 is that current flows from the second conduction terminal to the first conduction terminal.

Optionally, when the dc input terminal 11 has a power input, the control unit 12 may control the gating module 14 to be in the first conduction mode, so that the current conduction direction of the gating module 14 is the direction from the dc input terminal 11 to the output unit 15. Since the first conducting end of the gating module 14 is electrically connected to the dc input end 11 and the second conducting end of the gating module 14 is electrically connected to the input end of each electric storage unit 13 and the output unit 15, when the gating module 14 is in the first conducting mode, the dc input from the dc input end 11 can flow through the gating module 14 and the output unit 15 in sequence, and be delivered to the load 30 by the output unit 15, so as to supply power to the load 30 and/or charge the electric storage units 13 arranged in parallel in the battery device 10 via the gating module 14.

Wherein each battery device 10 is provided with one or more output units 15, and each output unit 15 is accessible to one or more loads 30.

Optionally, the output unit 15 may be used to monitor the state of the load 30, such as whether the load 30 has a power supply requirement, the power supply requirement of the load 30, or the like, in addition to being used to access the load 30; i.e. the output unit 15 may function as a circuit protection device and may be provided with a corresponding detection and metering function (e.g. detecting whether the battery device 10 is connected to the side of the load 30) for reporting the corresponding detection and metering to the control unit 12 via a communication connection with the control unit 12. Wherein the output unit 15 may be an output power distribution unit (such as a power distribution cabinet, a small bus, etc.) to distribute the output power of the battery device 10 to the load 30; meanwhile, the control unit 12 controls whether the output power distribution unit works or not, so that the power distribution unit can function as a circuit switch, that is, whether the power distribution unit works or not can be controlled, and accordingly, the connection or disconnection of a circuit between the battery device 10 and the load 30 can be controlled.

In some alternative embodiments, a controllable switch may be further provided in the output unit 15, and the controllable switch is controlled by the control unit 12 to be turned on or off, so as to control the connection or disconnection of the line between the battery device 10 and the load 30, respectively.

Alternatively, since the second conductive end of the gating module 14 is electrically connected to the output unit 15, and the input end of each of the electric storage units 13 in the battery device 10 is electrically connected to the second conductive end of the gating module 14, and the output end of each of the electric storage units 13 is electrically connected to the output unit 15, the plurality of electric storage units 13 in the battery device 10 may be equivalent to being connected in parallel between the second conductive end of the gating module 14 and the output unit 15 (or regarding the line between the gating module 14 and the output unit 15 as a dc bus, the plurality of electric storage units 13 may be equivalent to being connected in parallel to the dc bus). In this way, the storage capacity of the single battery device 10 can be improved to a certain extent, and when any one of the storage units 13 in the battery device 10 fails, normal use of other storage units 13 is not affected, so that other storage units 13 can continue to charge or supply power to the load 30, and stable operation of the battery device 10 is ensured.

Alternatively, when no power is supplied to the dc input terminal 11 (e.g., when the dc source 20 is abnormally powered), the power storage unit 13 in the battery device 10 may be activated to supply power to the load 30 to which the battery device 10 is connected.

Alternatively, the control unit 12 in the local battery device 10 may establish a communication connection with the control units 12 of other battery devices 10 in the power supply system.

Optionally, when the external energy source connected to the power supply system is abnormal in power supply, and the dc source 20 of the power supply system does not have current output, if the charge capacity of the other battery device 10 is insufficient to meet the power supply requirement of the load 30 connected to the battery device 10, the other battery device 10 may send power supply insufficiency information to the control unit 12 of the local battery device 10, so when the control unit 12 of the local battery device 10 receives the power supply insufficiency information of the other battery device 10, if it is detected that the local battery device 10 does not need to supply power to the load 30 or the charge capacity of the local battery device 10 is sufficient to meet the power supply requirement of the load 30 (i.e. the local battery device 10 has surplus power), the control unit 12 of the local battery device 10 may control the gating module 14 to switch to the second conduction mode, so that the current conduction direction of the gating module 14 is switched to the direction of the output unit 15, and when the control unit 12 of the local battery device 10 receives the power supply insufficiency information of the other battery device 10, the power supply insufficiency information to the dc output end of the dc source 20 is detected, and the current of the other battery device 10 is fully supplied from the dc source 10 to the other battery device 10.

Alternatively, when the external energy source connected to the power supply system is abnormal and the dc source 20 does not have a current output, if the storage capacity of the local battery device 10 is insufficient to meet the power supply requirement of the load 30 connected to the battery device 10, the local battery device 10 may send the power supply shortage information to the control unit 12 of the other battery device 10, so that when the control unit 12 of the other battery device 10 receives the power supply shortage information of the local battery device 10, if the other battery device 10 does not need to supply the load 30 or the storage capacity of the other battery device 10 is sufficient to meet the power supply requirement of the load 30 (i.e. the other battery device 10 has a surplus electric capacity), the control unit 12 of the other battery device 10 may reversely supply the dc output end of the dc source 20, and the current provided by the other battery device 10 is transferred to the local battery device 10 by the dc source 20, and the sample battery device 10 may obtain the power supply of the other battery device 10 from the dc output end of the power supply system (when the control unit 12 of the local battery device 10 needs to control module 14 to be in the first fully conductive mode) to supplement the shortage.

In an embodiment, a battery device 10 that can be conveniently distributed in a power supply system is provided, so that when the power supply system loses external energy supply, the number of power storage units 13 connected in a single battery device 10 can be increased and decreased according to actual situation requirements when the power supply system continues to maintain normal operation of multiple loads 30, and the risk of high temperature fire easily caused by centralized arrangement of the battery devices 10 can be avoided, even if any battery device 10 fails, other battery devices 10 can not be affected to continue to supply power to the loads 30, and the storage capacity of a single battery device 10 can be increased to a certain extent by arranging a plurality of power storage units 13 connected in parallel in each battery device 10, so that the power supply capacity of the battery device 10 can meet the power supply requirement of the loads 30 connected in the single battery device 10 as far as possible, when the power supply capacity of the battery device 10 can not meet the power supply requirement of the loads 30 connected in the single battery device 10, and even if other power supply capacity of the battery device 10 can not meet the power supply requirement of the loads 30, the battery device 10 can not meet the power supply capacity of the battery device 10, and the power supply capacity of the battery device 10 can be reasonably distributed among the corresponding battery devices 10 when the power supply capacity of the battery devices 10 is not met.

In an embodiment, based on the above embodiment, the gating module 14 is a bidirectional voltage transformation unit.

In this embodiment, the bidirectional transforming unit may be a DC/DC (direct current to direct current) voltage power converting unit, and when the switching module 14 is in the first conducting mode, the current flow direction of the bidirectional transforming unit is the direction from the direct current input end 11 to the output unit 15; when the switching-on module 14 is in the second conducting mode, the current of the bidirectional voltage transformation unit flows in the direction from the output unit 15 to the direct current input terminal 11.

Optionally, if the gating module 14 is in the first conduction mode, the bidirectional voltage transformation unit may be configured to convert a first voltage externally input to the dc input terminal 11 into a second voltage adapted to a voltage required by the load 30 and/or a rated charging voltage of the electric storage unit 13, so that the first voltage input by the dc input terminal 11 is converted into the second voltage by the bidirectional voltage transformation unit, and then the load 30 can be powered and/or the electric storage unit 13 can be charged.

Optionally, if the gating module 14 is in the second conduction mode, the bidirectional voltage transformation unit may be configured to transform the third voltage output by the electric storage unit 13 into the fourth voltage, where the fourth voltage is a voltage portion of the power supply system where the battery device 10 with insufficient power is not supplied, so that when the other battery devices 10 in the power supply system cannot meet the power supply requirement of the load 30 and the storage capacity of the local battery device 10 is surplus, the third voltage output by the electric storage unit 13 of the local battery device 10 is transformed into the fourth voltage by the bidirectional voltage transformation unit and then is reversely output to the dc output end of the power supply system through the dc input end 11, so that the other battery devices 10 with insufficient power can obtain the fourth voltage from the dc output end of the power supply system to complement the portion with insufficient power.

It should be noted that, the control unit 12 may control the gating module 14 to switch between different conduction modes, and may also adjust the transformation parameters of the bidirectional transformation unit to adjust the voltage converted by the bidirectional transformation unit.

Alternatively, in some alternative embodiments, referring to fig. 2, the gating module 14 is provided with a unidirectional conduction switch 141 and a first unidirectional transformation unit 142 in parallel, where a conduction direction of the unidirectional conduction switch 141 is a direction from the dc input terminal 11 to the output unit 15, and a conduction direction of the first unidirectional transformation unit 142 is a direction from the output unit 15 to the dc input terminal 11.

Optionally, the current flow direction inside the unidirectional conduction switch 141 can only flow from the first conduction end of the unidirectional conduction switch 141 to the second conduction end of the unidirectional conduction switch 141, and the first conduction end of the unidirectional conduction switch 141 is electrically connected with the dc input end 11 and the second conduction end is electrically connected with the output unit 15, so that the current conduction direction of the unidirectional conduction switch 141 is the direction from the dc input end 11 to the output unit 15; the internal current flow direction of the first unidirectional voltage transformation unit 142 can only flow from the input end of the first unidirectional voltage transformation unit 142 to the output end of the first unidirectional voltage transformation unit 142, and the output end of the first unidirectional voltage transformation unit is electrically connected with the direct current input end 11 and the input end of the first unidirectional voltage transformation unit is electrically connected with the output unit 15, so that the current conduction direction of the first unidirectional voltage transformation unit 142 is the direction from the output end to the direct current input end 11.

And since the first conducting terminal of the unidirectional switch 141 is electrically connected to the output terminal of the first unidirectional transformer unit 142, and the second conducting terminal of the unidirectional switch 141 is electrically connected to the input terminal of the first unidirectional transformer unit 142, the unidirectional switch 141 and the first unidirectional transformer unit 142 are arranged in parallel in the gate module 14.

Optionally, the control terminal of the first unidirectional voltage transforming unit 142 is electrically connected to the control output terminal of the control unit 12, so that the control unit 12 can control the connection or disconnection of the input terminal and the output terminal of the first unidirectional voltage transforming unit 142 between the internal circuits of the first unidirectional voltage transforming unit 142 by outputting corresponding control signals to the control terminal of the first unidirectional voltage transforming unit 142.

Optionally, the unidirectional conducting switch 141 may be a diode or a MOS transistor. If the unidirectional switch 141 is a diode, the first conducting end of the unidirectional switch 141 is an anode of the diode, and the second conducting end of the unidirectional switch 141 is a cathode of the diode; if the unidirectional switch 141 is a PMOS transistor, the first conductive terminal of the unidirectional switch 141 is a drain of the PMOS transistor, and the second conductive terminal of the unidirectional switch 141 is a source of the PMOS transistor; if the unidirectional switch 141 is an NMOS transistor, the first conductive terminal of the unidirectional switch 141 is the source of the NMOS transistor, and the second conductive terminal of the unidirectional switch 141 is the drain of the NMOS transistor.

Optionally, if the unidirectional switch 141 is a diode, when the control unit 12 needs to control the gating module 14 to be in the first conduction mode, the internal path of the first unidirectional voltage transformation unit 142 may be controlled to be disconnected, so that the input end and the output end of the first unidirectional voltage transformation unit 142 cannot be conducted through the internal path, and at this time, the current input to the gating module 14 by the dc input end 11 may only flow out of the gating module 14 through the unidirectional switch 141 (at this time, the unidirectional switch 141 is in a conduction state); when the control unit 12 needs to control the gating module 14 to be in the second conduction mode, the internal path of the first unidirectional voltage transformation unit 142 may be controlled to be turned on, so that the input end and the output end of the first unidirectional voltage transformation unit 142 may be turned on through the internal path, and the current provided by the electric storage unit 13 may only flow reversely through the first unidirectional voltage transformation unit 142 and be delivered to the dc input end 11 (at this time, the unidirectional switch 141 is in the off state, and due to the unidirectional conduction characteristic of the unidirectional switch 141, the current cannot flow to the dc input end 11 through the unidirectional switch 141 at this time).

Optionally, if the unidirectional switch 141 is a MOS transistor, the control output end of the control unit 12 is further electrically connected to a gate (not shown in the figure) of the MOS transistor; when the control unit 12 needs to control the gating module 14 to be in the first conduction mode, the internal passage of the first unidirectional voltage transformation unit 142 can be controlled to be disconnected, and the MOS transistor is controlled to be in the conduction state, and at this time, the current input to the gating module 14 from the dc input end 11 can only flow out of the gating module 14 through the MOS transistor; when the control unit 12 needs to control the gating module 14 to be in the second conduction mode, the internal channel of the first unidirectional voltage transformation unit 142 can be controlled to be conducted, and the MOS transistor is controlled to be in the off state, and at this time, the current provided by the electric storage unit 13 can only be reversely conveyed to the dc input terminal 11 through the first unidirectional voltage transformation unit 142.

Alternatively, the first unidirectional transforming unit 142 may be a DC/DC (direct current to direct current) voltage power converting unit.

It should be noted that, the control unit 12 may also output a corresponding control signal to the first unidirectional voltage transformation unit 142 to adjust the voltage transformation parameter of the first unidirectional voltage transformation unit 142, so as to adjust the voltage converted by the first unidirectional voltage transformation unit 142.

It should be noted that, the scheme of parallel connection of the first unidirectional transformation unit 142 and the unidirectional conduction switch 141 in the gating module 14 is particularly suitable for the scheme that the power provided by the dc source 20 can directly meet the power supply requirement of the load 30; that is, when the switching module 14 is in the first conduction mode, the unidirectional switch 141 can directly transfer the direct current input by the direct current input terminal 11 to the output unit 15 for directly supplying power to the load 30.

In an embodiment, on the basis of the above embodiment, the electric storage unit 13 is connected to the battery device 10 in a detachable and electrically connected manner.

Optionally, a plurality of first interfaces suitable for inserting the electric storage unit 13 are arranged in the battery device 10, and first contacts corresponding to connecting wires of modules and units required to be electrically connected with the electric storage unit 13 in the battery device 10 are arranged in the interfaces; the electric storage unit 13 has a second interface adapted to the first interface, and a second contact corresponding to the first contact is provided in the second interface (the second contact is a contact of a connection wire required to be connected to another module or unit of the battery device 10 in the electric storage unit 13).

When the electric storage unit 13 is inserted into the battery device 10 through the connection between the second interface and the first interface, the first contact and the second contact can be electrically connected, so that the electric storage unit 13 can be connected into the battery device 10 in a detachable electric connection mode. In this way, the power storage unit 13 can be easily increased or decreased and replaced in the battery device 10.

The above-described manner of realizing the detachable electrical connection of the electric storage unit 13 to the battery device 10 is merely illustrative, and it is not excluded that the electric storage unit 13 may be equivalently connected to the battery device 10 in other manners.

In an embodiment, referring to fig. 3, the battery device 10 further includes a first switch module 16, wherein the gate module 14 is electrically connected to the output unit 15 through the first switch module 16; the input end and the output end of the electric storage unit 13 are respectively and electrically connected with the two conducting ends of the first switch module 16; the control output terminal of the control unit 12 is electrically connected to the control terminal of the first switch module 16.

In this embodiment, the first conducting end of the first switch module 16 is electrically connected to the second conducting end of the gating module 14 and the input end of each electric storage unit 13; the second conducting end of the first switch module is electrically connected with the output ends of the output unit 15 and the power storage units 13. In addition, the control output end of the control unit 12 is electrically connected to the control end of the first switch module 16, so as to control the first switch module 16 to be turned on or turned off.

Optionally, a normally open switching device (such as a normally open contactor, a normally open relay, etc.) is disposed in the first switch module 16, so that when the battery device 10 is powered down, the first switch module 16 is turned off, protecting the circuit.

Optionally, during the normal operation of the battery device 10, when the power supply of the dc source 20 is normal, so that the dc input end 11 has electrical energy input, the first switch module 16 is controlled to be in a closed state, so that the current input by the dc input end 11 can supply power to the load 30 through the gate module 14, the first switch module 16 and the output unit 15 in sequence; when the power supply of the dc source 20 is abnormal, such that the dc input terminal 11 has no power input, and the power storage unit 13 needs to be started to supply power to the load 30, the first switch module 16 can be controlled to be in an off state at this time, so as to prevent the current output by the power storage unit 13 from flowing back to the input terminal of the power storage unit 13, and thus, current circulation can be avoided.

In an embodiment, referring to fig. 4, on the basis of the above embodiment, the battery device 10 further includes a second switch module 17, wherein the dc input terminal 11 is electrically connected to the gate module 14 through the second switch module 17; the control output end of the control unit 12 is electrically connected to the control end of the second switch module 17.

In this embodiment, the first conductive end of the second switch module 17 is electrically connected to the dc input end 11, the second conductive end of the second switch module 17 is electrically connected to the first conductive end of the gate module 14, and the control end of the second switch module 17 is electrically connected to the control output end of the control unit 12.

Alternatively, a controllable switching tube (such as a MOS tube) or a switching device (such as a contactor, a relay, etc.) may be disposed in the second switch module 17, and the control unit 12 may control the second switch module 17 to be turned on or off by controlling the switching tube or/and the switching device in the second switch module 17.

It should be noted that, since the control output terminal of the control unit 12 is electrically connected to the control terminal of the second switch module 17, the second switch module 17 may be controlled to be turned on or off by outputting a corresponding control signal to the control terminal of the second switch module 17.

Alternatively, the second switch module 17 may be a normally open switch device (such as a normally open contactor, a normally open relay, etc.), and when the second switch module 17 does not receive the control signal output by the control unit 12, the second switch module 17 maintains an off state; when the second switch module 17 receives the control signal output from the control unit 12, the second switch module 17 maintains the closed state.

When the second switch module 17 is closed, a passage can be formed between the first conducting end and the second conducting end of the second switch module 17; when the second switch module 17 is turned off, an open circuit is formed between the first conductive end and the second conductive end of the second switch module 17.

Alternatively, since the first conductive end of the second switch module 17 is electrically connected to the dc input end 11 and the second conductive end of the second switch module 17 is electrically connected to the first conductive end of the gate module 14, when the second switch module 17 is closed, a path is formed between the dc input end 11 and the gate module 14, and the dc input end 11 can supply power to the load 30 through the gate module 14; conversely, if the second switch module 17 is turned off, an open circuit is formed between the dc input 11 and the gate module 14, and the dc input 11 cannot supply power to the load 30 through the gate module 14. Particularly, when no power is input to the dc output terminal, the electric storage unit 13 in the battery device 10 needs to be started to supply power to the load 30, and the second switch module 17 is controlled to be turned off, so that the voltage output by the electric storage unit 13 can be prevented from flowing backward to the dc input terminal 11.

In an embodiment, referring to fig. 5, on the basis of the foregoing embodiment, the electric storage unit 13 includes a second unidirectional voltage transformation unit 131, a storage battery 132, and a third switch module 133, where an input end of the second unidirectional voltage transformation unit 131 is an input end of the electric storage unit 13, a charge-discharge end of the storage battery 132 is electrically connected to an output end of the second unidirectional voltage transformation unit 131, and a first conductive end of the third switch module 133, and a second conductive end of the third switch module 133 is an output end of the electric storage unit 13.

In this embodiment, the input end of the second unidirectional transforming unit 131 is the input end of the electric storage unit 13, the charge and discharge end of the storage battery 132 is electrically connected to the output end of the second unidirectional transforming unit 131 and the first conducting end of the third switching module 133, and the second conducting end of the third switching module 133 is the output end of the electric storage unit 13.

Optionally, at least one unidirectional switch (such as a diode or a MOS transistor) is disposed in the third switch module 133, and the current conduction direction of the unidirectional switch is the direction from the storage battery 132 to the output unit 15, so that the current flow in the third switch module 133 can only flow from the first conduction end of the third switch module 133 to the second conduction end of the third switch module 133. Taking the unidirectional conduction switch as a diode as an example, the anode of the diode is electrically connected with the charge and discharge end of the storage battery 132, and the cathode is electrically connected with the output unit 15, so that the current conduction direction of the unidirectional conduction switch is the direction from the storage battery 132 to the output unit 15.

If the unidirectional switch is a MOS transistor, the control output end of the control unit 12 may be further electrically connected to a gate (not shown in the figure) of the MOS transistor, and output a corresponding control signal to the gate of the MOS transistor to control the on or off of the MOS transistor, so as to control the unidirectional switch to be turned on or off; if the unidirectional conduction switch is a diode, the unidirectional conduction switch can automatically realize the on or off of the second switching device by automatically detecting the voltage difference variation between the anode and the cathode.

In addition, in other alternatives, a unidirectional conduction switch and a controllable switch (such as a controllable contactor and a controllable relay) may be further disposed in the third switch module 133 in parallel, and the third switch module 133 may be controlled to be turned off by controlling the unidirectional conduction switch and the controllable switch to be turned off simultaneously; and the third switch module 133 can be controlled to be closed as long as any one of the unidirectional conduction switch and the controllable switch is controlled to be closed.

In addition, in other alternatives, the third switch module 133 may be further provided with a unidirectional switch and a controllable switch in series, and by controlling any one of the unidirectional switch and the controllable switch to be turned off, the third switch module 133 can be controlled to be turned off; the third switch module 133 may be controlled to be closed by controlling the unidirectional conduction switch and the controllable switch to be closed simultaneously.

Optionally, the current flow direction of the second unidirectional voltage transformation unit 131 is from the input end to the output end of the second unidirectional voltage transformation unit 131. The input end of the second unidirectional voltage transformation unit 131 is used as the input end of the electric storage unit 13 and is electrically connected with the second conducting end of the gating module 14; the output end of the second unidirectional transformation unit 131 is electrically connected with the charge and discharge ends of the storage battery 132.

The second unidirectional transforming unit 131 may be a DC/DC (direct current to direct current) voltage power converting unit, and the second unidirectional transforming unit 131 may be configured to convert the received direct current voltage into a rated charging voltage adapted to the storage battery 132, and then output the converted voltage to the storage battery 132.

Optionally, the second unidirectional voltage transformation unit 131 may convert the received dc voltage into a rated charging voltage adapted to the storage battery 132 according to preset operating parameters; or, the control end of the second unidirectional voltage transformation unit 131 is electrically connected to the control output end of the control unit 12 and is controlled by the control unit 12, so that the control unit 12 can output a corresponding control signal to the second unidirectional voltage transformation unit 131 to set the working parameters of the second unidirectional voltage transformation unit 131, so that the second unidirectional voltage transformation unit 131 can convert the received direct current voltage into a corresponding direct current voltage according to the charging requirement of the storage battery 132 (i.e. the control unit 12 can allocate the voltage converted by the second unidirectional voltage transformation unit 131 according to the charging requirement).

It should be noted that the control unit 12 may be provided with a plurality of control outputs, and may control each component (such as the gating module 14 and/or the second unidirectional transforming unit 131) through different control outputs.

When the third switch module 133 is closed, a path may be formed between the first conductive end and the second conductive end of the third switch module 133; when the third switch module 133 is turned off, an open circuit is formed between the first conductive end and the second conductive end of the third switch module 133.

Alternatively, since the first conducting end of the third switch module 133 is electrically connected to the charge and discharge end of the battery 132, when the third switch module 133 is turned on, a path is formed between the battery 132 and the second conducting end of the third switch module 133, and the electric storage unit 13 has a voltage output; conversely, when third switch module 133 is turned off, a circuit break is formed between battery 132 and the second conduction terminal of third switch module 133, and at this time, power storage unit 13 has no voltage output.

Optionally, when the dc input 11 can supply power to the load 30 to which the battery device 10 is connected, the third switch module 133 is turned off, and the electric storage unit 13 does not output power; when the dc input 11 fails to meet the power supply requirement of the load 30, the third switch module 133 is turned on, and the electric storage unit 13 may supply power to the load 30 and/or power to other underpowered battery devices 10 through the dc input 11.

By using the unidirectional switch and the device characteristics of the second unidirectional transformer 131, the charge/discharge control of the battery 132 in the power storage unit 13 can be performed in good time, for example, when no current is input to the dc input terminal 11, the battery 132 in any power storage unit 13 is controlled to discharge the load 30, or when current is input to the dc input terminal 11 and the battery 132 is not fully charged, the second unidirectional transformer 131 can be controlled to charge the battery 132 with the current input to the dc input terminal 11.

The present utility model further provides a power supply system of a data center, referring to fig. 6, the power supply system includes a dc source 20 and a plurality of battery devices 10, and the specific structure of the battery devices 10 refers to the above embodiments, and since the power supply system adopts all the technical solutions of all the embodiments, at least all the technical effects brought by the technical solutions of the embodiments are provided, and will not be described in detail herein.

Wherein the dc input of each battery device 10 is electrically connected to the dc output of the dc source 20; while the output unit of the battery device 10 is responsible for accessing the load 30 of the data center.

The above description of the preferred embodiments of the present utility model should not be taken as limiting the scope of the utility model, but rather should be understood to cover all modifications, variations and adaptations of the present utility model using its general principles and the following detailed description and the accompanying drawings, or the direct/indirect application of the present utility model to other relevant arts and technologies.

Claims (8)

1. The battery device is characterized by comprising a direct current input end, a control unit, a plurality of electric storage units, a gating module and at least one output unit, wherein the direct current input end is used for being connected with a direct current source of a power supply system, the direct current input end is electrically connected with the input end of each electric storage unit and the output unit through the gating module, the output end of each electric storage unit is electrically connected with the output unit, the output unit is used for being connected with a load, and the communication end and/or the control output end of the control unit are/is electrically connected with the electric storage unit, the gating module and the output unit; when the battery device inputs electric energy through the direct current input end, the conduction direction of the gating module is the direction from the direct current input end to the output unit; when the battery device outputs electric energy through the direct current input end, the conduction direction of the gating module is the direction from the output unit to the direct current input end.

2. The battery device of claim 1, wherein the gating module is a bi-directional voltage transformation unit;

or the gating module is provided with a unidirectional conduction switch and a first unidirectional transformation unit in parallel, wherein the conduction direction of the unidirectional conduction switch is the direction from the direct current input end to the output unit, and the conduction direction of the first unidirectional transformation unit is the direction from the output unit to the direct current input end.

3. The battery device of claim 2, wherein the unidirectional-conduction switch is a diode;

or, the unidirectional conduction switch is a MOS tube, and the control output end of the control unit is also electrically connected with the control end of the MOS tube.

4. The battery device according to claim 1, wherein the electric storage unit is connected to the battery device in a detachable electric connection manner.

5. The battery device of claim 1, further comprising a first switch module, wherein the gating module is electrically connected to the output unit via the first switch module; the input end and the output end of the electric storage unit are respectively and electrically connected with the two conducting ends of the first switch module; and the control output end of the control unit is electrically connected with the control end of the first switch module.

6. The battery device of claim 1, further comprising a second switch module, wherein the dc input is electrically connected to the gating module via the second switch module; and the control output end of the control unit is electrically connected with the control end of the second switch module.

7. The battery device according to any one of claims 1 to 6, wherein the power storage unit includes a second unidirectional voltage transformation unit, a storage battery, and a third switch module, wherein an input end of the second unidirectional voltage transformation unit is an input end of the power storage unit, a charge-discharge end of the storage battery is electrically connected to an output end of the second unidirectional voltage transformation unit, a first conduction end of the third switch module, and a second conduction end of the third switch module is an output end of the power storage unit.

8. A power supply system for a data center, wherein the power supply system comprises a dc source and a plurality of battery devices, the battery devices being the battery devices of any one of claims 1-7, the dc source being electrically connected to a dc input of the battery devices.