CN113193646A - Power supply device, method and system - Google Patents
Power supply device, method and system Download PDFInfo
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- CN113193646A CN113193646A CN202110480965.5A CN202110480965A CN113193646A CN 113193646 A CN113193646 A CN 113193646A CN 202110480965 A CN202110480965 A CN 202110480965A CN 113193646 A CN113193646 A CN 113193646A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The application discloses a power supply device, a power supply method and a power supply system, and relates to a power supply system in the field of data centers and servers. The power supply device includes: the power supply assembly comprises a high-voltage direct-current converter and a battery module, wherein the input end of the high-voltage direct-current converter is used for connecting a power supply, the output end of the high-voltage direct-current converter is used for connecting a supplied device, the output end of the battery module is used for connecting the supplied device, when the output voltage of the output end of the high-voltage direct-current converter is smaller than the output voltage of the output end of the battery module, the battery module supplies electric energy to the supplied device, and when the output voltage of the output end of the high-voltage direct-current converter is larger than or equal to the output voltage of the output end of the battery module, the high-voltage direct-current converter is connected with the power supply to supply the supplied device, so that the reliability of power supply can be improved, and the technical effect of safe and reliable operation of the supplied device can be realized.
Description
Technical Field
The present disclosure relates to power supply systems in the field of data centers and servers, and more particularly, to a power supply apparatus, method and system.
Background
In order to improve the safe and reliable operation of the power supply device, a power supply device including a backup power supply is generally used to supply power to the power supply device.
In the prior art, the power supply device generally comprises: the High-Voltage Direct Current converter comprises an active power supply and a standby power supply, wherein the active power supply comprises a plurality of High-Voltage Direct Current (HVDC) converters, the input end of each HVDC converter is connected with a mains supply, the output end of each HVDC converter is connected with a supplied device, each HVDC converter is used for supplying electric energy provided by the mains supply to the supplied device, and the standby power supply supplies electric energy to the supplied device when the mains supply is abnormal (such as power failure).
However, if the utility power supply is normal and part of the hvdc converters fails, the electric energy provided by the main power supply to the powered device may not meet the electric energy requirement of the powered device, thereby causing a problem that the powered device cannot operate safely and reliably.
Disclosure of Invention
The application provides a power supply device, a method and a system for improving safe and reliable operation of a powered device.
According to a first aspect of the present application, there is provided a power supply device including: the power supply assemblies are connected in parallel and comprise a high-voltage direct-current converter and a battery module;
when the output voltage of the output end of the high-voltage direct-current converter is smaller than the output voltage of the output end of the battery module of the power supply assembly, the battery module supplies electric energy to the supplied equipment;
when the output voltage of the output end of the high-voltage direct current converter is greater than or equal to the output voltage of the output end of the battery module of the power supply assembly, the high-voltage direct current converter connected with the power supply supplies electric energy to the supplied equipment.
According to a second aspect of the present application, there is provided a power supply system comprising: a powered device, a power supply apparatus as described in the first aspect.
According to a third aspect of the present application, there is provided a power supply method applied to the power supply apparatus according to the first aspect, the method including:
when the output voltage of the output end of the high-voltage direct-current converter is less than the output voltage of the output end of the battery module of the power supply assembly, the battery module supplies electric energy to the supplied equipment;
when the output voltage of the output end of the high-voltage direct-current converter is larger than or equal to the output voltage of the output end of the battery module of the power supply assembly, the high-voltage direct-current converter connected with the power supply supplies electric energy to the power supply equipment.
In this embodiment, on one hand, the high-voltage dc converter and the battery module are included in the power supply module, so that unified operation and maintenance can be realized, thereby reducing operation and maintenance cost and improving convenience and rapidness of operation and maintenance; on the other hand, in the power supply assembly, the high-voltage direct-current converters and the battery modules are in one-to-one correspondence relationship, are mutually decoupled and are mutually backed up, when the power supply is in a normal state and the high-voltage direct-current converters are in a fault, the battery modules corresponding to the direct-current converters in the fault can supply power, and when the power supply is in an abnormal state, the battery modules can supply power, so that the reliability of power supply can be improved; on the other hand, because high voltage direct current converter and battery module are the one-to-one correspondence, consequently, high voltage direct current converter can carry out the self-checking of discharging rather than the battery module that corresponds alone, does not influence the power supply function of other battery modules to can improve the technological effect of the reliability of power supply.
It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present application, nor do they limit the scope of the present application. Other features of the present application will become apparent from the following description.
Drawings
The drawings are included to provide a better understanding of the present solution and are not intended to limit the present application. Wherein:
fig. 1 is a schematic diagram of a power supply device of the related art;
FIG. 2 is a schematic diagram according to a first embodiment of the present application;
FIG. 3 is a schematic diagram according to a second embodiment of the present application;
fig. 4 is a schematic diagram according to a third embodiment of the present application.
Detailed Description
The following description of the exemplary embodiments of the present application, taken in conjunction with the accompanying drawings, includes various details of the embodiments of the application for the understanding of the same, which are to be considered exemplary only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the present application. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.
The power supply device of the embodiment of the disclosure can be used for supplying electric energy to the powered device, namely supplying power to the powered device. The powered device may be a device that normally operates based on electric energy, such as a data center.
Data centers are illustratively the core areas of information integration, typically carrying significant Internet Technology (IT) loads, such as storage or computing, that typically require adequate and uninterrupted power supply guarantees. However, in case of interruption of the power supply, that is, in case of interruption of the power supply device supplying power to the data center, accidents such as data loss of the data center may occur.
In order to make the powered device operate safely and reliably, the powered device is generally supplied with electric energy by combining the main power supply and the standby power supply, and under normal conditions, the main power supply supplies electric energy to the powered device, and if the main power supply is in a normal state, the standby power supply supplies electric energy to the powered device.
The main power supply is usually a commercial power supply, the standby power supply is usually a diesel generator, and the diesel generator needs a certain starting time, so other devices capable of storing electric energy are generally adopted as the standby power supply, such as a battery.
Fig. 1 is a schematic view of a related art power supply apparatus, and as shown in fig. 1, a power supply apparatus 100 may include:
an active power supply 101 and a standby power supply 102, wherein the active power supply 101 may include: mains 1011, diesel generator 1012, and high voltage dc converter assembly 1013, backup power source 102 may be a lead acid battery 1021.
The powered device may be the load 103 shown in fig. 1, and the load 103 may be a data center.
As shown in fig. 1, the high voltage dc converter assembly 1013 may include a plurality of parallel high voltage dc converters 10131, input terminals of the high voltage dc converter assembly 1013 are connected to the utility power source 1011 and the diesel generator 1012, respectively, and output terminals of the high voltage dc converter assembly 1013 are connected to the lead acid battery 1021 and the load 103, respectively.
The principle of supplying power to the load 103 (i.e. the supplied device) based on the power supply apparatus 100 shown in fig. 1 is as follows: if the utility power source 1011 is in a normal state, the utility power source 1011 supplies electric energy to the load 103 through the high-voltage direct-current converter assembly 1013; if the utility power supply is in an abnormal state, the output of the high-voltage dc converter assembly 1013 is stopped, and at this time, the lead-acid battery 1021 supplies electric energy to the load 103 until the high-voltage dc converter assembly 1013 recovers to supply power, that is, the utility power supply recovers to a normal state or the diesel generator is started.
However, if the power supply device 100 shown in fig. 1 is used to supply power to the load 103, at least one of the following technical problems may exist: the footprint of the lead-acid battery 1021 is relatively large; the service life of the lead-acid battery 1021 is relatively short; when the power supply device 100 fails, the detection is difficult, and the operation and maintenance of the power supply device 100 are difficult; a circuit breaker with higher power needs to be configured as a switch of the lead-acid battery 1021, so that the cost is relatively higher.
In order to solve at least one of the above technical problems, the present application provides a power supply apparatus, a method and a system, which are applied to a power supply system in the field of data centers and servers, so as to achieve the reliability of providing electric energy for loads.
Fig. 2 is a schematic diagram according to a first embodiment of the present application, and as shown in fig. 2, in some embodiments, a power supply apparatus 200 may include an active power supply 201 and a standby power supply 202, where the active power supply 201 may include: mains 2011, diesel generator 2012, and hvdc converter assembly 2013, backup power source 202 may be a lithium battery pack.
Similarly, the powered device is the load 203 shown in fig. 2, and the load 203 may be a data center.
As shown in fig. 2, the hvdc converter assembly 2013 may include a plurality of hvdc converters 20131 connected in parallel, with the input terminals of the hvdc converter assembly 2013 connected to the utility power source 2011 and the diesel generator 2012, respectively, and the output terminals of the hvdc converter assembly 2013 connected to the backup power source 202 and the load 203, respectively. The backup power supply 202 includes a plurality of lithium batteries 20211 connected in parallel.
The principle of supplying power to the load 203 (i.e. the powered device) based on the power supply apparatus 200 shown in fig. 2 is as follows: if the utility power 2011 is in a normal state, the utility power 2011 supplies electric energy to the load 203 through the high-voltage direct-current converter assembly 2013; if the utility power 2011 is in an abnormal state, the hvdc converter 2013 stops outputting, and at this time, the lithium battery pack supplies electric energy to the load 203 until the hvdc converter 2013 recovers to supply power, that is, the utility power 2011 recovers to a normal state or the diesel generator is started.
Compared with the power supply device 100 of the related art shown in fig. 1, the power supply device 200 shown in fig. 2 is used for supplying electric energy to the supplied equipment, so that on one hand, the problem that in the related art, a circuit breaker with higher power needs to be configured as a switch of a lead-acid battery, and the cost is relatively higher is solved; on the other hand, compared with a lead-acid battery, the lithium battery pack has a small occupied area and a long service life, so that the technical effect of improving the reliability of power supply can be achieved.
Fig. 3 is a schematic diagram according to a second embodiment of the present application, and as shown in fig. 3, a power supply device 300 includes: the power supply assembly 301 comprises a plurality of parallel power supply assemblies 301, wherein each power supply assembly 301 comprises a high-voltage direct-current converter 3011 and a battery module 3012.
The input end of the high-voltage dc converter 3011 is used to connect the power supply 302, the output end of the high-voltage dc converter 3011 is used to connect the powered device 303, and the output end of the battery module 3012 is used to connect the powered device.
When the output voltage at the output terminal of the high-voltage dc converter 3011 is lower than the output voltage at the output terminal of the battery module 3012, the battery module 3012 supplies electric energy to the power-supplied device 303.
When the output voltage of the output terminal of the high-voltage dc converter 3011 is greater than or equal to the output voltage of the output terminal of the battery module 3012, the high-voltage dc converter 3011 connected to the power supply 302 supplies power to the power-supplied device 303.
Illustratively, the power supply 302 may include a mains power supply, and may also include a mains power supply and a diesel generator; the powered device may be a data center.
In this embodiment, at least one of the power supply assemblies includes a high-voltage dc converter and a battery module
For example, in some embodiments, the number of the power supply assemblies connected in parallel is m, and n power supply assemblies in the m power supply assemblies comprise the high-voltage direct-current converter and the battery module, wherein m is larger than or equal to 2, and m is larger than n.
Accordingly, other power supply components may include a high voltage direct current converter or the like, and may be devices that provide power to a powered device based on a power source.
In other embodiments, the number of the power supply assemblies connected in parallel is m, and each of the m power supply assemblies includes a high-voltage direct-current converter and a battery module.
It should be noted that the number of power supply components including the high-voltage current converter and the battery module may be determined based on demand, history, and tests.
The principle of supplying power to a powered device (such as a data center) based on the power supply apparatus 300 shown in fig. 3 is as follows: if the output voltage of the output end of the high-voltage direct-current converter 3011 in any power supply component 301 is smaller than the output voltage of the output end of the battery module 3012 of the power supply component 301, the battery module 3012 in any power supply component 301 provides electric energy for the powered device 303; if the power supply 302 is in a normal state, the output voltage of the output end of the high-voltage dc converter 3011 in the power supply assembly 301 is greater than the output voltage of the output end of the battery module 3012 of the power supply assembly 301, the high-voltage dc converter 3011 in the power supply assembly 301 provides electric energy for the powered device 303; if the power supply 302 is in an abnormal state, the high-voltage direct-current converter 3011 in the power supply assembly 301 supplies power to the powered device 303.
It should be noted that the output voltage at the output end of any high-voltage dc converter 3011 is less than the output voltage at the output end of the battery module 3012 of the power supply module 301, and may include two cases, where one case is that the output voltage at the output end of the high-voltage dc converter 3011 is less than the output voltage at the output end of the battery module 3012 of the power supply module 301 due to the abnormal state of the power supply 302; in another situation, the output voltage of the output terminal of the high-voltage dc converter 3011 is lower than the output voltage of the output terminal of the battery module 3012 of the power supply module 301 due to a fault of the high-voltage dc converter 3011, and generally, if the output voltage of the output terminal of the high-voltage dc converter 3011 is lower than the output voltage of the output terminal of the battery module 3012 of the power supply module 301, the output voltage of the high-voltage dc converter 3011 is almost zero.
For example, if the voltage at the input end of each high-voltage dc converter 3011 is zero when the power supply 302 is in an abnormal state (e.g., power failure), the output voltage at the output end of the high-voltage dc converter 3011 is less than the output voltage at the output end of the battery module 3012 of the same power supply module 301, so that each battery module 3012 provides power to the device 303 to be powered.
For another example, if the power source 302 is in a normal state and each of the high-voltage dc converters 3011 has no fault, the output voltage of the output terminal of the high-voltage dc converter 3011 is greater than the output voltage of the output terminal of the battery module 3012 of the same power supply module 301, so that the power source 302 supplies power to the device 303 to be powered through the high-voltage dc converter 3011 in the power supply module 301.
For another example, if at least a part of the hvdc 3011 fails when the power source 302 is in a normal state, the at least a part of the hvdc 3011 (i.e. the failed hvdc 3011) cannot provide power to the device 303 to be powered, and the at least a part of the hvdc 302 belongs to the battery module 3012 of the same power supply module and the hvdc 3011 having an output voltage larger than an output voltage of the battery module 3012 of the power supply module 301 can provide power to the device to be powered together.
It should be noted that, in the present embodiment, on one hand, the high-voltage dc converter 3011 and the battery module 3012 are included in the power supply module 301, so that unified operation and maintenance can be implemented, thereby reducing operation and maintenance cost and improving convenience and rapidity of operation and maintenance; on the other hand, in the power supply module 301, the high-voltage dc converters 3011 and the battery modules 3012 are in a one-to-one correspondence relationship, are decoupled from each other, and are also backed up from each other, when the power supply 302 is in a normal state and the high-voltage dc converter 3011 fails, the battery module 3012 corresponding to the failed dc converter 3011 can supply power, and when the power supply 302 is in an abnormal state, the battery modules 302 can supply power, so that the reliability of power supply can be improved; on the other hand, since the high-voltage dc converter 3011 and the battery modules 3012 are in a one-to-one correspondence relationship, the high-voltage dc converter 3011 can perform discharge self-test on the battery modules 3012 corresponding to the high-voltage dc converter 3011 independently without affecting the power supply functions of the other battery modules 3012, thereby improving the technical effect of reliability of power supply.
Furthermore, based on the power supply principle of the first embodiment and the power supply principle of the second embodiment, the second embodiment has the following distinguishing technical features compared with the first embodiment, and has the following corresponding technical effects:
the structural hierarchy for the two embodiments is as follows:
in the first embodiment, on the one hand, the high-voltage dc converter assembly 2013 for supplying the load 203 with electric energy is composed of the high-voltage dc converters 20131 connected in parallel, and on the other hand, the backup power source 2021 for supplying the load 203 with electric energy is composed of the lithium batteries 2021 connected in parallel, and the high-voltage dc converter 20131 and the lithium batteries 2021 are independent of each other.
In the second embodiment, a power supply module 3011 is composed of a high-voltage dc converter 3011 and a battery module 3012, and a plurality of power supply modules 3011 are connected in parallel, so that the power is supplied to the powered device 303 based on the parallel connection structure. The high-voltage dc converter 3011 and the battery module 3021 belonging to different power supply assemblies 3011 are independent of each other, while the high-voltage dc converter 3011 and the battery module 3021 belonging to the same power supply assembly 3011 are associated with each other.
Therefore, based on the above analysis, the first embodiment and the second embodiment are substantially different in structural hierarchy.
The principle hierarchy for the two embodiments is as follows:
in the first embodiment, each of the parallel high-voltage dc converters 20131 is used as a structure for providing power to the load 203 when the primary power supply 201 is in a normal state, that is, if the primary power supply 201 is in a normal state, the high-voltage dc converter assembly 2013 formed by connecting the high-voltage dc converters 20131 in parallel provides power to the load 203, and only when the primary power supply 201 is in an abnormal state, the backup battery 202, that is, each of the parallel lithium batteries 2021, provides power to the load 203.
That is, in the first embodiment, the power supply of the hvdc converter assembly 2013 and the power supply of the lithium battery 2021 are mutually exclusive processes, in which the power supply of one of the two processes affects the power supply of the other, for example, when the hvdc converter assembly 2013 supplies power to the load 203, the lithium battery 2021 is in a non-power supply state; conversely, if the hvdc converter assembly 2013 is in a non-powered state, the load 203 is powered by the lithium battery 2021.
In the second embodiment, the high-voltage dc converter 3011 and the battery module 3012 are a power supply component, and as a whole, for different power supply components, the power supply component may be the high-voltage dc converter 3011 or the battery module 3012 for supplying power to the powered device 303.
Therefore, based on the above analysis, the first embodiment and the second embodiment are fundamentally different in principle level.
As can be seen from the above analysis of the second embodiment, by adopting the solution of the second embodiment, since the high-voltage dc converters 3011 and the battery modules 3012 are in a one-to-one correspondence relationship, and are decoupled from each other, and are also backed up, when the power supply 302 is in a normal state and the high-voltage dc converter 3011 fails, the battery module 3012 corresponding to the failed dc converter 3011 can supply power, and when the power supply 302 is in an abnormal state, the battery modules 302 can supply power, so that the reliability of power supply can be improved, for example, if the solution described in the first embodiment is adopted, when at least part of the high-voltage dc converters 3011 fails, the at least part of the high-voltage dc converters 3011 cannot supply power to the powered device 303, so that the powered device 303 may be in a low-voltage state, and the powered device 303 may not operate normally, and by the solution of the second embodiment, the battery module 3012 belonging to the same power supply module 301 as the at least one high-voltage dc converter 3011 can provide electric energy for the powered device 303, so that the electric energy requirement of the powered device 303 can be met, the reliability of power supply is improved, and the technical effects of safety and reliability of the powered device are further achieved.
In some embodiments, the power supply apparatus 300 may provide power to the powered device 303 by connecting any number of power supply components 301 in parallel, and may configure a plurality of power supply components 301 as redundant power supply components, where the redundant power supply components may provide power to the power supply apparatus when other power supply components 301 are in an abnormal state, so as to improve the technical effect of the stability of the power supply apparatus.
For example, the number of redundant power supply components may be set by the power supply device 300 based on a history power supply record, a power supply test record, and the like.
Fig. 4 is a schematic diagram of a third embodiment according to the present application, and as shown in fig. 4, a power supply apparatus 400 includes: a plurality of parallel power supply assemblies 401, power supply assembly 401 includes high voltage dc converter 4011 and battery module 4012.
Illustratively, fig. 4 exemplarily illustrates a specific structure of one power supply module 401.
The input end of the high-voltage direct-current converter 4011 of the power supply component 401 is connected with the power source 402, the output end of the high-voltage direct-current converter 4011 of the power supply component 401 is connected with the supplied equipment 403, and the output end of the battery module 4012 of the power supply component 401 is connected with the supplied equipment 403.
The battery module 4012 of the power supply module 401 is configured to provide electric energy to the powered device 403 if the output voltage of the output terminal of the high voltage dc converter 4011 in the power supply module 401 is less than the output voltage of the output terminal of the battery module 4012 of the power supply module 401.
The high-voltage dc converter 4011 of the power supply module 401 is configured to provide the power supplied by the power source 402 to the powered device 403 if the output voltage of the output terminal of the high-voltage dc converter 4011 of the power supply module 401 is greater than the output voltage of the output terminal of the battery module 4012 of the power supply module 401.
Illustratively, the power source 402 may include a mains power supply, and may also include a mains power supply and a diesel generator; the powered device may be a data center.
As shown in fig. 4, the power supply assembly 401 further includes a first hot plug interface 4013 and a second hot plug interface 4014, where the first hot plug interface 4013 is used for connecting the high voltage dc converter 401 and the power source 402, and is also used for connecting the high voltage dc converter 401 and the powered device 403.
The second hot plug interface 4014 is used for connecting the battery module 4012 and the powered device 403.
In this embodiment, one power supply assembly 401 includes two hot plug interfaces, one hot plug interface (i.e. the first hot plug interface 4013) connects the high voltage dc converter 4011 with the power source 402, and connects the high voltage dc converter 4011 with the power-supplied device 403; another hot plug interface (i.e., the second hot plug interface 4014) connects the battery module 4012 with the powered device 403.
In other embodiments, the power supply assembly 401 further includes a third hot plug interface, where the third hot plug interface is used to connect the high voltage dc converter 4011 and the power source 402, connect the powered device 403, and further connect the battery module 4012 and the powered device 403.
Illustratively, one power supply assembly 401 may include one hot plug interface, and the one hot plug interface may connect the high voltage dc converter 4011 with the power source 402, connect the high voltage dc converter 4011 with the powered device 403, and connect the battery module 4012 with the powered device 403.
Of course, in other embodiments, a part of the power supply assemblies 401 in each power supply assembly 401 may include two hot plug interfaces, and a part of the power supply assemblies may include one hot plug interface, which is not limited in this embodiment.
It should be noted that, in this embodiment, the power supply component may be connected to an external device (e.g., a power source and a device to be powered) through the hot-plug interface, and if a certain power supply component (e.g., the hvdc converter and/or the battery module) fails, the power supply component may be taken out of the power supply device through the hot-plug interface, so as to perform maintenance and replacement on the power supply component, thereby implementing simple maintenance of the power supply device, and without affecting continuous power supply of other power supply components, thereby improving the technical effect of reliability of power supply.
As shown in fig. 4, the battery module 4012 includes: battery unit 40121 and current processing unit 40122, battery unit 40121 is connected with current processing unit 40122, and current processing unit 40122 is connected with the output terminal of high voltage dc converter 4011.
The current processing unit 40122 is configured to, when the electric quantity of the battery unit 40121 is smaller than a preset first threshold value and the output voltage of the output end of the high voltage dc converter 4011 is greater than the output voltage of the output end of the battery module 4012 of the power supply assembly 401, charge the battery unit 40121 based on the voltage of the output end of the high voltage dc converter 4011.
The first threshold may be set by the power supply device 400 based on a demand, a history, a test, and the like, and the embodiment is not limited.
The battery unit 40121 may be a lithium battery pack, such as a lithium battery pack consisting of eight lithium batteries; the Current processing unit 40122 may be a Direct Current converter (DC/DC).
For example, if the power source 402 is in a normal state and the output voltage of the output terminal of the hvdc converter 4011 is greater than the output voltage of the output terminal of the battery module 4012 of the power supply assembly 401, the current processing unit 40122 keeps the discharge loop thereof turned on, and the output voltage thereof is generally a fixed voltage value, such as 230V or 330V, which is relatively smaller than the voltage output by the hvdc converter 4011, so that the battery module 4012 does not provide power for the equipment 403 to be powered, and the current processing unit 40122 can take a voltage from the output terminal of the hvdc converter 4011 to charge the battery unit 40121 when the electric quantity of the battery unit 40121 is smaller than the first threshold value.
It should be noted that, in this embodiment, each battery module includes a battery unit and a current processing unit, so that the current processing units in different battery modules charge the battery units based on the electric quantities of the battery units in the battery module, thereby achieving the flexibility of charging different battery units, decoupling the battery units from each other without mutual influence and interference, improving the independent operation between the battery modules, and improving the technical effect of power supply reliability.
In some embodiments, the current processing unit 40122 is configured to provide the power stored in the battery unit 40121 to the powered device 403 when the output voltage at the output terminal of the hvdc converter 4011 is lower than the output voltage at the output terminal of the battery module 4012 of the power supply assembly 401.
In combination with the above embodiments, if the power source 402 is in an abnormal state and/or the high voltage dc converter 4011 fails, the output voltage of the output terminal of the high voltage dc converter 4011 is smaller than the output voltage of the output terminal of the battery module 4012 of the power supply assembly 401, the output voltage of the high voltage dc converter 4011 is almost zero, and the high voltage dc converter 4011 cannot provide electric energy for the supplied power equipment 403.
At this time, the output voltage of the current processing unit 40122 is greater than the voltage output by the high-voltage dc converter 4011, so the current processing unit 40122 can convert the electric energy stored in the battery unit 40121 and supply the converted electric energy to the supplied device 403, thereby realizing continuous power supply to the supplied device 403 and further improving the reliability of the power supply.
As shown in fig. 4, the battery module 4012 further includes: a battery management unit 40123 and an operating state indicator light 40124, and a battery management unit 40123 is connected to the operating state indicator light 40124 and the current processing unit 40122, respectively.
And a battery management unit 40123 for controlling the operation status indicator lamp 40124 to be lighted when the current processing unit 40122 supplies the electric power stored in the battery unit 40121 to the power-supplied equipment 403.
For example, the battery management unit 40123 may be connected to the output terminal of the current processing unit 40122, detect the voltage at the output terminal of the current processing unit 40122, and control the operation status indicator lamp 40124 to be turned on if the voltage at the output terminal of the current processing unit 40122 is greater than a fixed voltage value, and determine that the current processing unit 40122 is in a state of supplying power to the powered device 403.
It should be noted that, in this embodiment, when it is determined that the current processing unit is in the state of supplying power to the power-supplied device, the operation status indicator lamp is in the on state, so that the warning effect that power supply is in progress can be achieved.
As shown in fig. 4, in some embodiments, the battery module 4012 in the power supply module 401 includes: the electricity amount indicator 40125 and the battery management unit 40123 are also connected to the electricity amount indicator 40125 and the battery unit 40121, respectively.
The battery management unit 40123 is further configured to obtain the amount of electricity of the battery unit 40121, and control the electricity amount indicator 40125 to light up when the amount of electricity of the battery unit 40121 is less than a preset second threshold value.
Similarly, in the present embodiment, the second threshold may be set by the power supply device 400 based on the demand, history, experiment, and the like, and the present embodiment is not limited thereto.
It should be noted that, in this embodiment, especially when the power source 402 is in an abnormal state and is not recovered for a long time, the indication lamp 40125 is turned on to indicate that the power level of the battery unit 40121 is low, so that a warning effect can be achieved, and other measures can be conveniently and timely adopted to continue to supply power to the powered device 403, thereby improving the continuity and reliability of power supply.
As shown in fig. 4, in some embodiments, the battery module 4012 further includes: the malfunction indicator lamp 40126, the malfunction indicator lamp 40126 is connected to the battery management unit 40123.
The battery management unit 40123 is used for acquiring the attribute information of the battery unit 40121, and controlling the fault indicator 40126 to light up when the battery unit 40121 is determined to be faulty according to the attribute information of the battery unit 40121; and/or the presence of a gas in the gas,
the battery management unit 40123 is used for acquiring the attribute information of the current processing unit 40122, and controlling the fault indicator lamp 40126 to light when determining that the current processing unit 40122 is faulty according to the attribute information of the current processing unit 40122.
The attribute information includes information such as voltage, current, and temperature, that is, the battery management unit 40123 may acquire information such as voltage, current, and temperature of the battery unit 40121, determine whether the battery unit 40121 has a fault according to the information such as voltage, current, and temperature of the battery unit 40121, and control the fault indicator lamp to light 40126 if it is determined that the battery unit 40121 has a fault.
Similarly, the battery management unit 40123 may obtain information of the voltage, the current, and the temperature of the current processing unit 40122, determine whether the current processing unit 40122 is faulty according to the information of the voltage, the current, and the temperature of the current processing unit 40122, and control the fault indicator light 40126 to be turned on if the current processing unit 40122 is determined to be faulty.
Note that, the method for determining whether battery unit 40121 (and/or current processing unit 40122) has a fault or not by battery management unit 40123 according to information such as voltage, current, and temperature of battery unit 40121 may be: battery management unit 40123 compares the acquired attribute information of battery unit 40121 (and/or current processing unit 40123) with preset attribute information, and determines that battery unit 40121 (and/or current processing unit 40122) has no fault if the acquired attribute information of battery unit 40121 (and/or current processing unit 40122) is within the range of the preset attribute information, and otherwise determines that battery unit 40121 (and/or current processing unit 40122) has a fault.
It is worth mentioning that, in the present embodiment, by determining whether the battery unit is faulty, and upon determining that the battery unit is faulty, the fault indicator lamp is turned on; or by determining whether the current handling unit is faulty and, upon determining that the current handling unit is faulty, illuminating a fault indicator light; or, the warning effect can be realized by respectively determining whether the battery unit has a fault or not and whether the current processing unit has a fault or not, and lightening the fault indicator lamp when the battery unit has a fault and the current processing unit has a fault, so that related workers can timely remove the fault, and the technical effect of improving the reliability of power supply is achieved.
In some embodiments, the battery management unit 40123 is connected with the current processing unit 40122.
And a battery management unit 40123, configured to control current processing unit 40122 to discharge battery unit 40121 when receiving a self-test instruction for battery module 4012 in power supply assembly 401.
In one example, the self-test command may be triggered by the power supply apparatus 400 based on a preset time interval, that is, every preset time interval of the battery management unit 40123, the power supply apparatus controls the current processing unit 40122 to discharge the battery unit 40121; in another example, the self-test command may be sent by the hvdc 4011, for example, if the battery management unit 40123 is connected to the hvdc 4011, the hvdc 4011 sends the self-test command to the battery management unit 40123 cell every preset time interval; in another example, the self-test command may be sent by a relevant worker, and the like, and the embodiment is not limited thereto.
It should be noted that, in the present embodiment, the technical effects of safety and reliability of the self-test can be achieved by discharging the battery cells.
As shown in fig. 4, in some embodiments, the battery module 4012 in the power supply assembly 401 further includes: and a safety unit 40127 connected to the battery unit 40121 and the current processing unit 40122, respectively.
The safety unit 40127 is configured to disconnect the circuit loop of the battery module 40122 when the current of the circuit loop of the battery module 4012 is greater than a preset third threshold.
Similarly, in the present embodiment, the third threshold may be set by the power supply device 400 based on the demand, history, experiment, and the like, and the present embodiment is not limited.
It should be noted that, in this embodiment, when the current of the circuit loop is greater than the third threshold, the circuit loop is cut off, so that the overcurrent protection of the battery module can be achieved, and the service life of the battery module can be prolonged.
As shown in fig. 4, in some embodiments, the power supply assembly 401 further includes a housing structure 4013; the input and output terminals of the power supply module 401 are disposed in the outer frame structure 4013 of the power supply module.
Illustratively, as shown in fig. 4, the input terminal and the output terminal of the high-voltage dc converter 4011 of the power supply module are disposed in the outer frame structure 4013 of the power supply module 401, and the input terminal and the output terminal of the battery module 4012 of the power supply module 401 are disposed in the outer frame structure 4013 of the power supply module 401.
In other embodiments, each power supply module 401 shares one outer frame structure 4013, that is, the input and output terminals of each power supply module 401 are disposed in the one outer frame structure 4013.
For example, after the outer frame structure may be connected in parallel by the copper bar or the cable, the power supply assembly 401 may obtain the electric energy provided by the power source 402 through the outer frame structure 4013 connected in parallel by the copper bar or the cable, and the power supply assembly 401 may provide the electric energy for the powered device 403 through the outer frame structure 4012 connected in parallel by the copper bar or the cable.
It should be noted that, in this embodiment, by setting the outer frame structure, especially for the power supply components, the unified processing of the input end and the output end can be realized, and the technical effects of accuracy and effectiveness of operation and maintenance of the power supply device are realized; and especially include the hot plug interface when the power supply unit to when being connected through hot plug interface and frame structure, can improve the security of power supply, and reduce the degree of difficulty to power supply unit's maintenance and maintenance etc. reduce the technical effect to the cost of power supply unit's maintenance and maintenance etc..
As shown in fig. 4, in some embodiments, the high voltage dc converter 4011 includes: the input end of the current conversion unit 40111 is used for connecting the power supply 402, and the output end of the current conversion unit 40111 is used for connecting the supplied equipment.
The current conversion unit 40111 is configured to perform ac-dc conversion on the current provided by the power source 402, and provide electric energy to the powered device 403 based on the converted current.
As shown in fig. 4, in some embodiments, the high voltage dc converter 4011 further includes: the control unit 40112 and the current conversion unit 40111 are also connected to the control unit 40112.
The control unit 40112 is configured to determine a parameter for converting the current provided by the power source 402 by the current converting unit 40111 according to preset power demand information of the powered device 403.
The current conversion unit 40111 is configured to convert the current provided by the power source 402 according to the parameter.
The power requirement information may be used to indicate the power requirement of the powered device 403, that is, what power the powered device 403 can operate normally.
It should be noted that, in this embodiment, the parameter for converting the current provided by the power supply by the current conversion unit is determined according to the electric energy demand information, so that the current provided by the power supply is converted by the current conversion unit according to the determined parameter, and the converted current meets the power consumption requirement of the power-supplied device, thereby improving the accuracy and reliability of power supply.
According to another aspect of the embodiments of the present disclosure, there is provided a power supply method, which is applied to a power supply apparatus as shown in the embodiment of fig. 3 or fig. 4, and includes: when the output voltage of the output end of the high-voltage direct-current converter is less than the output voltage of the output end of the battery module of the power supply assembly, the battery module supplies electric energy to the supplied equipment;
when the output voltage of the output end of the high-voltage direct-current converter is larger than or equal to the output voltage of the output end of the battery module of the power supply assembly, the high-voltage direct-current converter connected with the power supply supplies electric energy to the supplied equipment.
According to another aspect of the embodiments of the present disclosure, there is provided a power supply system, including the power supply apparatus according to any one of the above embodiments, such as the power supply apparatus shown in any one of fig. 2 to 4, and further including a powered device. The powered device may be a data center.
In some embodiments, the power supply system may further include: the power supply can comprise a commercial power supply, a diesel generator, a commercial power supply and a diesel generator.
It should be understood that various forms of the flows shown above may be used, with steps reordered, added, or deleted. For example, the steps described in the present application may be executed in parallel, sequentially, or in different orders, and the present invention is not limited thereto as long as the desired results of the technical solutions disclosed in the present application can be achieved.
The above-described embodiments should not be construed as limiting the scope of the present application. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (15)
1. A power supply device comprising: the power supply assemblies are connected in parallel and comprise a high-voltage direct-current converter and a battery module;
the input end of the high-voltage direct current converter is used for being connected with a power supply, the output end of the high-voltage direct current converter is used for being connected with a device to be powered, and the output end of the battery module is used for being connected with the device to be powered;
when the output voltage of the output end of the high-voltage direct-current converter is smaller than the output voltage of the output end of the battery module of the power supply assembly, the battery module supplies electric energy to the supplied equipment;
when the output voltage of the output end of the high-voltage direct current converter is greater than or equal to the output voltage of the output end of the battery module of the power supply assembly, the high-voltage direct current converter connected with the power supply supplies electric energy to the supplied equipment.
2. The apparatus of claim 1, the power supply assembly further comprising a first hot plug interface and a second hot plug interface, the first hot plug interface for connecting the hvdc converter and the power source and for connecting the hvdc converter and the powered device; the second hot plug interface is used for connecting the battery module and the powered device.
3. The apparatus of claim 1, the power supply assembly further comprising a third hot plug interface, the third hot plug interface being configured to connect the hvdc converter and the power source, to connect the hvdc converter and the powered device, and to connect the battery module and the powered device.
4. The device according to any one of claims 1 to 3, wherein the battery module includes: the battery unit is connected with the current processing unit, and the current processing unit is connected with the output end of the high-voltage direct-current converter;
the current processing unit is used for charging the battery unit based on the voltage of the output end of the high-voltage direct-current converter when the electric quantity of the battery unit is smaller than a preset first threshold value and the output voltage of the output end of the high-voltage direct-current converter is larger than the output voltage of the output end of the battery module.
5. The apparatus of claim 4, wherein the current processing unit is configured to provide the power stored in the battery unit to the powered device when the output voltage at the output of the HVDC converter is less than the output voltage at the output of the battery module.
6. The device of claim 5, wherein the battery module further comprises: the battery management unit is respectively connected with the working state indicator lamp and the current processing unit;
the battery management unit is used for controlling the working state indicator lamp to be lightened when the current processing unit provides the electric energy stored by the battery unit to the supplied equipment.
7. The apparatus of claim 6, wherein the battery module comprises: the battery management unit is also respectively connected with the electric quantity indicator lamp and the battery unit;
the battery management unit is further used for acquiring the electric quantity of the battery unit and controlling the electric quantity indicator lamp to be turned on when the electric quantity of the battery unit is smaller than a preset second threshold value.
8. The apparatus of claim 7, wherein the battery module further comprises: a fault indicator light connected to the battery management unit;
the battery management unit is used for acquiring the attribute information of the battery unit and controlling the fault indicator lamp to be turned on when the battery unit is determined to be in fault according to the attribute information of the battery unit; and/or the presence of a gas in the gas,
the battery management unit is used for acquiring the attribute information of the current processing unit and controlling the fault indicator lamp to be turned on when the fault of the current processing unit is determined according to the attribute information of the current processing unit.
9. The device according to any one of claims 4 to 8, wherein the battery module includes: the battery management unit is connected with the current processing unit;
and the battery management unit is used for controlling the current processing unit to discharge the battery unit when receiving a self-checking instruction of the battery module in the power supply assembly.
10. The device according to any one of claims 4 to 9, wherein the battery module further comprises: the safety unit is respectively connected with the battery unit and the current processing unit; the safety unit is used for disconnecting the circuit loop of the battery module when the current of the circuit loop of the battery module is larger than a preset third threshold value.
11. The apparatus of any one of claims 1 to 10, wherein the power supply assembly further comprises an outer frame structure; the input end and the output end of the power supply assembly are arranged in an outer frame structure of the power supply assembly.
12. The apparatus of any one of claims 1 to 11, wherein the hvdc converter comprises: the input end of the current conversion unit is used for being connected with the power supply, and the output end of the current conversion unit is used for being connected with the supplied power equipment;
the current conversion unit is used for performing alternating current-direct current conversion on the current provided by the power supply and providing electric energy for the supplied equipment based on the converted current.
13. The apparatus of claim 12, wherein the hvdc converter further comprises: the current conversion unit is also connected with the control unit;
the control unit is used for determining a parameter for converting the current provided by the power supply by the current conversion unit according to preset electric energy demand information of the power supply equipment;
the current conversion unit is used for converting the current provided by the power supply according to the parameter.
14. A power supply system comprising: a powered device, a power supply apparatus as claimed in any one of claims 1 to 13.
15. A power supply method applied to the power supply device according to any one of claims 1 to 13, the method comprising:
when the output voltage of the output end of the high-voltage direct-current converter is less than the output voltage of the output end of the battery module of the power supply assembly, the battery module supplies electric energy to the supplied equipment;
when the output voltage of the output end of the high-voltage direct-current converter is larger than or equal to the output voltage of the output end of the battery module of the power supply assembly, the high-voltage direct-current converter connected with the power supply supplies electric energy to the power supply equipment.
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