CN114597938A - Aluminum-air battery hybrid power supply system and control method thereof - Google Patents
Aluminum-air battery hybrid power supply system and control method thereof Download PDFInfo
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- CN114597938A CN114597938A CN202210203837.0A CN202210203837A CN114597938A CN 114597938 A CN114597938 A CN 114597938A CN 202210203837 A CN202210203837 A CN 202210203837A CN 114597938 A CN114597938 A CN 114597938A
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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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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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
- H02J9/08—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 requiring starting of a prime-mover
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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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/30—The power source being a fuel cell
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/10—Applications of fuel cells in buildings
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- Business, Economics & Management (AREA)
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- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention belongs to the technical field of new energy, and particularly relates to an aluminum-air battery hybrid power supply system and a control method thereof, which comprise a centralized power supply unit, a distributed power supply unit and a comprehensive management platform, wherein the centralized power supply unit comprises a diesel engine power station, a mains supply power supply module, a UPS controller and a lead-acid battery pack, the UPS controller is electrically connected with the diesel engine power station, the mains supply power supply module and the lead-acid battery pack, the distributed power supply unit comprises a plurality of aluminum-air power supplies, a plurality of DC-DC converters, a plurality of aluminum-air power supply detection modules, a lithium iron phosphate battery pack and a DC-AC conversion pack, the system has reasonable design, can temporarily supply power through the lead-acid battery pack when the mains supply and the diesel engine are switched, ensure normal power supply, and can ensure power through distributed power supply when the mains supply and the diesel engine are in failure, and the output power is distributed and adjusted according to the output power and the load power required by the load unit, so that the energy utilization rate is improved.
Description
Technical Field
The invention belongs to the technical field of new energy, and particularly relates to an aluminum-air battery hybrid power supply system and a control method thereof.
Background
The electric energy source is the material basis of the survival and development of the human society and the strategic focus of the attention of all countries. In order to ensure the power supply reliability of important loads, emergency power generation equipment is usually arranged in national defense underground engineering and civil key facilities, namely, a dual-power supply mode of 'commercial power + emergency power station' is adopted, the commercial power is used for supplying power when the commercial power is normal or at non-important occasions, and the emergency power station is adopted for supplying power when the commercial power is interrupted or at important occasions. The emergency power station is of various types, and if a combination of a diesel engine and an alternating current synchronous generator is adopted, the emergency power station is called a diesel engine power station. Its main advantages are high efficiency, quick start, less water consumption, compact equipment, convenient transportation, small civil engineering, high building speed and simple operation and maintenance. In mines, enterprises, towns and the like far away from the power grid, diesel engine power stations are often arranged as emergency power and lighting power supplies; diesel engine power stations are also frequently used as emergency combat power supplies and standby power supplies in national defense projects, military bases and some important enterprises and public institutions.
However, the dual power supply of the "commercial power + diesel engine power station" adopts a "centralized power supply" mode, that is, the commercial power and the emergency power station are centrally distributed and supply power to the load in a radial manner through a "backbone network" for a long distance. Once the commercial power and the emergency power station are intensively distributed with the areas which are abnormal or destroyed, all the load areas can not carry out power guarantee and can be recovered only by maintenance, and the automatic isolation and the transfer supply of the fault areas can not be realized. In addition, the switching time of the commercial power and the diesel engine power station is 15 seconds when the commercial power and the diesel engine power station are automatically switched, the switching time of the manual switching is 3 minutes, and most loads are in a state without power guarantee except for partial equipment provided with emergency power supplies such as UPS and EPS during the dual power switching period.
With the development of technologies such as electrochemistry and material science, following novel energy sources such as nuclear energy, solar energy and wind energy, novel high-efficiency chemical energy sources represented by aluminum-air batteries are generally concerned and applied, the aluminum-air batteries not only have high energy density, low working temperature, high starting speed and long storage life, but also are flexible to use and can be distributed in a partitioning manner, and based on the characteristics, the defects of a centralized power supply mode adopted by the traditional 'commercial power + diesel engine power station' dual power supply are overcome, so that the novel high-efficiency chemical energy sources are a key problem to be solved in the field of new energy sources at present.
Disclosure of Invention
The purpose of the invention is: the aluminum-air battery hybrid power supply system and the control method thereof aim to provide the aluminum-air battery hybrid power supply system, a plurality of power supply local area networks are constructed by distributing a plurality of groups of aluminum-air batteries in a local area in a partition mode, so that when a trunk line or the local area fails, energy scheduling among the aluminum-air batteries distributed in the partition mode is utilized, and power supply of single-area equipment is not influenced; through reasonably designing the topological structure and the control method of the power supply system, a centralized and distributed hybrid power supply mode organically combined is formed, the power supply reliability is effectively enhanced, and the energy utilization efficiency is improved.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:
the utility model provides an aluminium-air battery hybrid power supply system, includes centralized power supply unit and distribution power supply unit and comprehensive management platform, centralized power supply unit includes diesel engine power station, commercial power supply module, UPS controller and lead-acid battery group, the UPS controller is connected with electricity between diesel engine power station, commercial power supply module and the lead-acid battery group, distribution power supply unit includes a plurality of aluminium air power supply, a plurality of DC-DC converter, a plurality of aluminium air power supply detection module, a lithium iron phosphate group and a DC-AC transform group, and a plurality of aluminium air power supply is connected with a plurality of DC-DC converter electricity respectively, and a plurality of DC-DC converter all is connected with DC-AC transform group electricity, DC-AC transform group and UPS controller electricity are connected with the load cell jointly, lithium iron phosphate group and DC-AC transform group, the management platform is managed to the distribution power supply unit, the distribution power supply unit includes a plurality of aluminium air power supply, a plurality of aluminium air power supply detection module, a plurality of aluminium iron phosphate group and DC-AC converter electricity are connected with DC-AC transform group, a plurality of DC-AC transform group, The load unit is electrically connected with the UPS controller; the integrated management platform is in control connection with the UPS controller and the DC-AC conversion group, the integrated management platform can monitor the electric quantity of a lead-acid storage battery pack and a lithium iron phosphate battery pack, the aluminum air power supply detection module can monitor the condition of an aluminum air power supply, the aluminum air power supply detection module is in signal connection with the integrated management platform, and the integrated management platform can detect the power jointly output by a plurality of aluminum air power supplies and can also detect the load power of a load unit; the UPS controller can be connected or disconnected with the diesel engine power station, the commercial power supply module, the lead-acid storage battery pack and the load unit under the control of the comprehensive management platform; the DC-AC conversion set can be connected or disconnected with the lithium iron phosphate battery pack and the load unit under the control of the comprehensive management platform.
The UPS controller is internally provided with a change-over switch which is electrically connected with the diesel engine power station and the commercial power supply module. The UPS controller can be switched to be connected with the diesel engine power station and the commercial power supply module through the change-over switch.
The UPS controller is electrically connected with a transformer cabinet, and the transformer cabinet is electrically connected with the load unit.
The lithium iron phosphate battery pack is electrically connected with a bidirectional converter, and the bidirectional converter, the DC-AC conversion set and the load unit are electrically connected.
The intelligent power supply system is reasonable in design, can supply power temporarily through a lead-acid storage battery pack when the mains supply and the diesel engine are switched, guarantees normal power supply, can guarantee electric power through distributed power supply when the mains supply and the diesel engine are in failure, distributes and adjusts output electric power according to the output electric power and load power needed by a load unit, and improves the energy utilization rate.
When the centralized power supply unit is in a normal working state, a worker can operate the integrated management platform to control the distributed power supply unit to stand by, control the centralized power supply unit to start working and supply power to the load unit, when a commercial power supply module in the centralized power supply unit is in a normal working state, the integrated management platform controls the UPS controller to be connected with the commercial power supply module, the commercial power supply module directly supplies power to the UPS controller, and the UPS controller supplies power to the load unit;
when the commercial power supply module fails and needs to be switched to a diesel engine power station for supplying power, the UPS controller cuts off the connection with the commercial power supply module and is connected with the diesel engine power station, in a switching project, the UPS controller establishes the connection with the lead-acid storage battery pack, discharges the power to the UPS controller through the lead-acid storage battery pack and transmits the power to the load unit for supplying power, when the commercial power supply module can normally work, the UPS controller cuts off the electric connection with the diesel engine power station and is connected with the commercial power supply module, the commercial power supply module supplies power to the load unit, and in the switching process, the commercial power supply module supplies power to the load unit temporarily;
when the commercial power supply module supplies power or a diesel engine power station supplies power, the comprehensive management platform can monitor the electric quantity of the lead-acid storage battery pack and the lithium iron phosphate battery pack, and when the electric quantity of the lead-acid storage battery pack and the lithium iron phosphate battery pack is detected not to be in the maximum value, the UPS controller is controlled to supply power to the lead-acid storage battery pack and the lithium iron phosphate battery pack, so that the lead-acid storage battery pack and the lithium iron phosphate battery pack are charged;
when the commercial power supply module supplies power or the diesel engine power station cannot normally supply power, a worker can control the centralized power supply unit to be in a standby state through the comprehensive management platform, the UPS controller is disconnected from the commercial power supply module and the diesel engine power station, the distributed power supply unit starts to work, a plurality of aluminum air power supplies start to supply power at the same time, the power is respectively transmitted to the DC-DC converters for boosting, the plurality of DC-DC converters transmit the power to the DC-AC conversion group, direct current is converted into alternating current, and then the power is transmitted to the load unit through the DC-AC conversion group;
the comprehensive management platform detects the power commonly output by the aluminum air power supplies and can detect the load power of a load unit, the power commonly output by the aluminum air power supplies is marked as P1, the load power of the load unit is marked as P2, the number of the aluminum air power supplies is N, when the comprehensive management platform detects P1, the power is averagely distributed to each aluminum air power supply to be output, and a single DC-DC converter is controlled to output a single aluminum air power supply with the power of P1/N;
when P1 is larger than P2, the comprehensive management platform controls the common output power of the plurality of aluminum air power supplies to be output by taking P2 as a standard, the output power of a single aluminum air power supply is P2/N, and when the comprehensive management platform detects that the electric quantity storage of the lithium iron phosphate battery pack does not reach the maximum value, the DC-AC conversion group transmits the electric power of the plurality of aluminum air power supplies to the lithium iron phosphate battery pack for charging by using the power of P1-P2;
when P1 is less than P2 and the comprehensive management platform detects that the residual electric quantity of the lithium iron phosphate battery pack is greater than the minimum value, the single aluminum air power supply outputs power of output power P1/N, the lithium iron phosphate battery pack discharges power of P2-P1, and at the moment, the plurality of aluminum air power supplies and the lithium iron phosphate battery pack jointly serve as load power supplies to supply power to the load unit;
when P1 is less than P2, the comprehensive management platform detects that the residual electric quantity of the lithium iron phosphate battery pack is less than the minimum value, and the comprehensive management platform detects that the electric quantity of the lead-acid battery pack is greater than the minimum value, the single aluminum air power supply outputs the power of output power P1/N, the lead-acid battery pack discharges the power of P2-P1, and at the moment, a plurality of aluminum air power supplies and the lead-acid battery pack are jointly used as load power supplies to supply power to the load unit;
when the P1 is more than or equal to P2 and the residual electric quantity of the lead-acid storage battery pack and the lithium iron phosphate battery pack is less than the minimum value, the comprehensive management platform controls the centralized power supply unit and the distributed power supply unit to stop working and stops supplying power to the load unit.
Drawings
The invention is further illustrated by the non-limiting examples given in the accompanying drawings;
fig. 1 is a first schematic system flow diagram of an embodiment of a hybrid power supply system for an aluminum-air battery and a control method thereof according to the present invention;
fig. 2 is a schematic system flow diagram of a hybrid power supply system of an aluminum-air battery and a control method thereof according to an embodiment of the present invention;
fig. 3 is a system flow diagram illustrating a third embodiment of the aluminum-air battery hybrid power supply system and the control method thereof according to the present invention;
the main element symbols are as follows:
the system comprises a comprehensive management platform 1, a diesel engine power station 3, a commercial power supply module 31, a UPS controller 32, a change-over switch 321, a transformer cabinet 322, a lead-acid storage battery pack 33, an aluminum air power supply 4, a DC-DC converter 41, an aluminum air power supply detection module 42, a lithium iron phosphate battery pack 43, a bidirectional converter 431, a DC-AC conversion pack 44 and a load unit 45.
Detailed Description
In order that those skilled in the art can better understand the present invention, the following technical solutions are further described with reference to the accompanying drawings and examples.
As shown in fig. 1-3, the aluminum-air battery hybrid power supply system of the present invention comprises a centralized power supply unit, a distributed power supply unit and a comprehensive management platform 1, wherein the centralized power supply unit comprises a diesel power station 3, a commercial power supply module 31, a UPS controller 32 and a lead-acid battery pack 33, the UPS controller 32 is electrically connected to the diesel power station 3, the commercial power supply module 31 and the lead-acid battery pack 33, the distributed power supply unit comprises a plurality of aluminum-air power supplies 4, a plurality of DC-DC converters 41, a plurality of aluminum-air power detection modules 42, a lithium iron phosphate battery pack 43 and a DC-AC conversion group 44, the plurality of aluminum-air power supplies 4 are electrically connected to the plurality of DC-DC converters 41 respectively, the plurality of DC-DC converters 41 are electrically connected to the DC-AC conversion group 44, the DC-AC conversion group 44 and the UPS controller 32 are electrically connected to a load unit 45, the lithium iron phosphate battery pack 43 is electrically connected with the DC-AC conversion set 44, the load unit 45 and the UPS controller 32; the integrated management platform 1 is in control connection with the UPS controller 32 and the DC-AC conversion group 44, the integrated management platform 1 can monitor the electric quantity of the lead-acid battery pack 33 and the lithium iron phosphate battery pack 43, the aluminum air power supply detection module 42 can monitor the condition of the aluminum air power supply 4, the aluminum air power supply detection module 42 is in signal connection with the integrated management platform 1, and the integrated management platform 1 can detect the power output by the multiple aluminum air power supplies 4 together and can also detect the load power of the load unit 45; the UPS controller 32 can be connected or disconnected with the diesel power station 3, the commercial power supply module 31, the lead-acid storage battery pack 33 and the load unit 45 under the control of the integrated management platform 1; the DC-AC conversion group 44 may be electrically connected to or disconnected from the lithium iron phosphate battery pack 43 and the load unit 45 under the control of the integrated management platform 1. The UPS controller 32 is provided with a transfer switch 321 therein, and the transfer switch 321 is electrically connected to the diesel power station 3 and the commercial power supply module 31. The UPS controller 32 can switch the connection with the diesel power station 3 and the utility power supply module 31 through the changeover switch 321. The UPS controller 32 is electrically connected to a transformer cabinet 322, and the transformer cabinet 322 is electrically connected to the load unit 45. The lithium iron phosphate battery pack 43 is electrically connected with a bidirectional converter 431, and the bidirectional converter 431 is electrically connected with the DC-AC conversion set 44 and the load unit 45.
When the centralized power supply unit is in a normal working state, a worker can operate the integrated management platform 1 to control the distributed power supply unit to stand by, control the centralized power supply unit to start working and supply power to the load unit 45, when the commercial power supply module 31 in the centralized power supply unit is in a normal working state, the integrated management platform 1 controls the UPS controller 32 to be connected with the commercial power supply module 31, directly supplies power to the UPS controller 32 through the commercial power supply module 31, and supplies power to the load unit 45 through the UPS controller 32; when the utility power supply module 31 fails and needs to be switched to the diesel engine power station 3 for power supply, the UPS controller 32 cuts off the connection with the utility power supply module 31 and is connected with the diesel engine power station 3, in the switching project, the UPS controller 32 establishes the connection with the lead-acid storage battery pack 33, discharges electricity to the UPS controller 32 through the lead-acid storage battery pack 33 and transmits the electricity to the load unit 45 for power supply, when the utility power supply module 31 can work normally, the UPS controller 32 cuts off the electric connection with the diesel engine power station 3 and is connected with the utility power supply module 31, the utility power supply module 31 supplies power to the load unit 45, and in the switching process, the utility power supply module 33 temporarily supplies power to the load unit 45; when the commercial power supply module 31 supplies power or the diesel power station 3 supplies power, the comprehensive management platform 1 can monitor the electric quantity of the lead-acid storage battery pack 33 and the lithium iron phosphate battery pack 43, and when the electric quantity of the lead-acid storage battery pack 33 and the lithium iron phosphate battery pack 43 is not detected to be at the maximum value, the UPS controller 32 is controlled to supply power to the lead-acid storage battery pack 33 and the lithium iron phosphate battery pack 43, so that the lead-acid storage battery pack 33 and the lithium iron phosphate battery pack 43 are charged; when the commercial power supply module 31 supplies power or the diesel power station 3 cannot normally supply power, a worker can control the centralized power supply unit to be in a standby state through the integrated management platform 1, the UPS controller 32 disconnects the commercial power supply module 31 from the diesel power station 3, the distributed power supply unit starts to work, so that a plurality of aluminum air power supplies 4 start to supply power at the same time, the power is respectively transmitted to the DC-DC converters 41 to be boosted, the plurality of DC-DC converters 41 transmit the power to the DC-AC conversion group 44, the direct current is converted into alternating current, and then the power is transmitted to the load unit 45 through the DC-AC conversion group 44; the comprehensive management platform 1 detects the power commonly output by the aluminum air power supplies 4, can detect the load power of the load unit 45, marks the power commonly output by the aluminum air power supplies 4 as P1, marks the load power of the load unit 45 as P2, and counts the number of the aluminum air power supplies 4 as N, when the comprehensive management platform 1 detects P1, the power is averagely distributed to each aluminum air power supply 4 for output, and the single DC-DC converter 41 is controlled to output the single aluminum air power supply 4 with the power of P1/N; when P1 is greater than P2, the comprehensive management platform 1 controls the common output power of the plurality of aluminum air power supplies 4 to be output by taking P2 as a standard, and the output power of a single aluminum air power supply 4 is P2/N, at this time, when the comprehensive management platform 1 detects that the electric quantity storage of the lithium iron phosphate battery pack 43 does not reach the maximum value, the DC-AC conversion group 44 transmits the electric power of the plurality of aluminum air power supplies 4 to the lithium iron phosphate battery pack 43 for charging by using the power of P1-P2; when the P1 is less than the P2, and the comprehensive management platform 1 detects that the residual electric quantity of the lithium iron phosphate battery pack 43 is greater than the minimum value, the single aluminum air power supply 4 outputs the power of the output power P1/N, the lithium iron phosphate battery pack 43 discharges the power of P2-P1, and at the moment, the plurality of aluminum air power supplies 4 and the lithium iron phosphate battery pack 43 are jointly used as load power supplies to supply power to the load unit 45; when P1 is less than P2, and the comprehensive management platform 1 detects that the residual electric quantity of the lithium iron phosphate battery pack 43 is less than the minimum value, and the comprehensive management platform 1 detects that the electric quantity of the lead-acid battery pack 33 is greater than the minimum value, the single aluminum air power supply 4 outputs the power of output power P1/N, the lead-acid battery pack 33 discharges the power of P2-P1, and at the moment, the plurality of aluminum air power supplies 4 and the lead-acid battery pack 33 jointly serve as a load power supply to supply power to the load unit 45; when the P1 is less than the P2, and the residual electric quantity of the lead-acid storage battery pack 33 and the lithium iron phosphate battery pack 43 is less than the minimum value, the comprehensive management platform 1 controls the centralized power supply unit and the distributed power supply unit to stop working, and stops supplying power to the load unit 45.
The invention has reasonable design, can temporarily supply power through the lead-acid storage battery pack 33 when the commercial power and the diesel engine are switched, ensures normal power supply, can ensure power through distributed power supply when the commercial power and the diesel engine are in failure, and can distribute and adjust the output power according to the output power and the load power required by the load unit, thereby improving the energy utilization rate.
The foregoing embodiments are merely illustrative of the principles of the present invention and its efficacy, and are not to be construed as limiting the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (5)
1. The utility model provides an aluminium air battery hybrid power supply system which characterized in that: comprises a centralized power supply unit, a distributed power supply unit and a comprehensive management platform, wherein the centralized power supply unit comprises a diesel engine power station, a commercial power supply module, a UPS controller and a lead-acid battery pack, the UPS controller is electrically connected with the diesel engine power station, the commercial power supply module and the lead-acid storage battery pack, the distributed power supply unit comprises a plurality of aluminum air power supplies, a plurality of DC-DC converters, a plurality of aluminum air power supply detection modules, a lithium iron phosphate battery pack and a DC-AC conversion group, wherein the plurality of aluminum air power supplies are respectively and electrically connected with the plurality of DC-DC converters, the plurality of DC-DC converters are all electrically connected with the DC-AC conversion group, the DC-AC conversion group and the UPS controller are electrically connected with a load unit together, and the lithium iron phosphate battery pack is electrically connected with the DC-AC conversion group, the load unit and the UPS controller;
the comprehensive management platform is in control connection with the UPS controller and the DC-AC conversion group, the comprehensive management platform can monitor the electric quantity of a lead-acid storage battery pack and a lithium iron phosphate battery pack, the aluminum air power supply detection module can monitor the condition of an aluminum air power supply, the aluminum air power supply detection module is in signal connection with the comprehensive management platform, and the comprehensive management platform can detect the power jointly output by a plurality of aluminum air power supplies and can also detect the load power of a load unit;
the UPS controller can be connected or disconnected with the diesel engine power station, the commercial power supply module, the lead-acid storage battery pack and the load unit under the control of the comprehensive management platform;
the DC-AC conversion set can be connected or disconnected with the lithium iron phosphate battery pack and the load unit under the control of the comprehensive management platform.
2. The aluminum-air battery hybrid power supply system according to claim 1, characterized in that: the UPS controller is internally provided with a change-over switch which is electrically connected with the diesel engine power station and the commercial power supply module.
3. The aluminum-air battery hybrid power supply system according to claim 1, characterized in that: the UPS controller is electrically connected with a transformer cabinet, and the transformer cabinet is electrically connected with the load unit.
4. The aluminum-air battery hybrid power supply system according to claim 1, characterized in that: the lithium iron phosphate battery pack is electrically connected with a bidirectional converter, and the bidirectional converter, the DC-AC conversion set and the load unit are electrically connected.
5. An aluminum-air battery hybrid power supply control method, according to any one of claims 1 to 4, characterized in that: the method comprises the following steps:
the method comprises the following steps: when the centralized power supply unit is in a normal working state, a worker can operate the integrated management platform to control the distributed power supply unit to stand by, control the centralized power supply unit to start working and supply power to the load unit, when a commercial power supply module in the centralized power supply unit is in a normal working state, the integrated management platform controls the UPS controller to be connected with the commercial power supply module, the commercial power supply module directly supplies power to the UPS controller, and the UPS controller supplies power to the load unit;
step two: when the commercial power supply module fails and needs to be switched to a diesel engine power station for supplying power, the UPS controller cuts off the connection with the commercial power supply module and is connected with the diesel engine power station, in a switching project, the UPS controller establishes the connection with the lead-acid storage battery pack, discharges the power to the UPS controller through the lead-acid storage battery pack and transmits the power to the load unit for supplying power, when the commercial power supply module can normally work, the UPS controller cuts off the electric connection with the diesel engine power station and is connected with the commercial power supply module, the commercial power supply module supplies power to the load unit, and in the switching process, the commercial power supply module supplies power to the load unit temporarily;
step three: when the commercial power supply module supplies power or a diesel engine power station supplies power, the comprehensive management platform can monitor the electric quantity of the lead-acid storage battery pack and the lithium iron phosphate battery pack, and when the electric quantity of the lead-acid storage battery pack and the lithium iron phosphate battery pack is not detected to be at the maximum value, the UPS controller is controlled to supply power to the lead-acid storage battery pack and the lithium iron phosphate battery pack, so that the lead-acid storage battery pack and the lithium iron phosphate battery pack are charged;
step four: when the commercial power supply module supplies power or the diesel engine power station cannot normally supply power, a worker can control the centralized power supply unit to be in a standby state through the comprehensive management platform, the UPS controller is disconnected from the commercial power supply module and the diesel engine power station, the distributed power supply unit starts to work, a plurality of aluminum air power supplies start to supply power at the same time, the power is respectively transmitted to the DC-DC converters for boosting, the plurality of DC-DC converters transmit the power to the DC-AC conversion group, direct current is converted into alternating current, and then the power is transmitted to the load unit through the DC-AC conversion group;
step four: the comprehensive management platform detects the power commonly output by the aluminum air power supplies and can detect the load power of a load unit, the power commonly output by the aluminum air power supplies is marked as P1, the load power of the load unit is marked as P2, the number of the aluminum air power supplies is N, when the comprehensive management platform detects P1, the power is evenly distributed to each aluminum air power supply to be output, and a single DC-DC converter is controlled to output a single aluminum air power supply with the power of P1/N;
step five: when P1 is larger than P2, the comprehensive management platform controls the common output power of the plurality of aluminum air power supplies to be output by taking P2 as a standard, the output power of a single aluminum air power supply is P2/N, and when the comprehensive management platform detects that the electric quantity storage of the lithium iron phosphate battery pack does not reach the maximum value, the DC-AC conversion group transmits the electric power of the plurality of aluminum air power supplies to the lithium iron phosphate battery pack for charging by using the power of P1-P2;
step six: when P1 is less than P2 and the comprehensive management platform detects that the residual electric quantity of the lithium iron phosphate battery pack is greater than the minimum value, the single aluminum air power supply outputs power of output power P1/N, the lithium iron phosphate battery pack discharges power of P2-P1, and at the moment, the plurality of aluminum air power supplies and the lithium iron phosphate battery pack jointly serve as load power supplies to supply power to the load unit;
step seven: when P1 is less than P2, the comprehensive management platform detects that the residual electric quantity of the lithium iron phosphate battery pack is less than the minimum value, and the comprehensive management platform detects that the electric quantity of the lead-acid battery pack is greater than the minimum value, the single aluminum air power supply outputs the power of output power P1/N, the lead-acid battery pack discharges the power of P2-P1, and at the moment, the plurality of aluminum air power supplies and the lead-acid battery pack are jointly used as a load power supply to supply power to a load unit;
step eight: when the P1 is more than or equal to P2 and the residual electric quantity of the lead-acid storage battery pack and the lithium iron phosphate battery pack is less than the minimum value, the comprehensive management platform controls the centralized power supply unit and the distributed power supply unit to stop working and stops supplying power to the load unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210203837.0A CN114597938A (en) | 2022-03-03 | 2022-03-03 | Aluminum-air battery hybrid power supply system and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210203837.0A CN114597938A (en) | 2022-03-03 | 2022-03-03 | Aluminum-air battery hybrid power supply system and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114221000A (en) * | 2021-12-06 | 2022-03-22 | 中国人民解放军火箭军工程大学 | Aluminum-air battery detection system and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114221000A (en) * | 2021-12-06 | 2022-03-22 | 中国人民解放军火箭军工程大学 | Aluminum-air battery detection system and control method thereof |
| CN114221000B (en) * | 2021-12-06 | 2024-05-17 | 中国人民解放军火箭军工程大学 | Aluminum air battery detection system and control method thereof |
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