CN111864778A - Charging and battery replacing control system and charging and battery replacing cabinet - Google Patents
Charging and battery replacing control system and charging and battery replacing cabinet Download PDFInfo
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- CN111864778A CN111864778A CN202010674866.6A CN202010674866A CN111864778A CN 111864778 A CN111864778 A CN 111864778A CN 202010674866 A CN202010674866 A CN 202010674866A CN 111864778 A CN111864778 A CN 111864778A
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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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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/615—Heating or keeping warm
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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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00016—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
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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
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
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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
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/28—The renewable source being wind energy
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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
- Y02B90/20—Smart grids as enabling technology in buildings sector
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/12—Energy storage units, uninterruptible power supply [UPS] systems or standby or emergency generators, e.g. in the last power distribution stages
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
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- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Computer Networks & Wireless Communication (AREA)
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- Business, Economics & Management (AREA)
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- General Physics & Mathematics (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to the technical field of energy storage, and discloses a charging and replacing control system and a charging and replacing cabinet. The charging and battery-replacing control system can reduce disturbance to a power grid and improve efficiency by forming a direct-current bus by the bidirectional high-power rectifier module. When the commercial power is used for charging, the commercial power supplies power to the direct current bus after being rectified by the bidirectional AC/DC converter, and meanwhile, the electric energy generated by the new energy power generation module supplies power to the direct current bus after being rectified by the new energy bidirectional DC/DC converter; and the battery bidirectional DC/DC converter charges the energy storage battery by using the electric energy in the direct current bus. After the mains supply is powered off, the energy management unit controls a part of battery DC/DC converters to work in a discharging state to charge other energy storage batteries according to the electric energy condition of each energy storage battery, and the battery replacement process is quickly completed; the battery DC/DC converter can also be controlled to work in a discharging state, the bidirectional AC/DC converter is controlled to work in an independent power supply state, and power is reversely supplied to an important load on the alternating current side, so that a standby power function is realized.
Description
Technical Field
The invention relates to the technical field of energy storage, in particular to a charging and replacing control system and a charging and replacing cabinet.
Background
Energy storage technology, especially electrochemical energy storage technology, has been rapidly developed in recent years by virtue of characteristics such as peak-to-valley regulation and improvement of power system stability. The energy storage system can solve the problem caused by unstable power generation output power of new energy such as photovoltaic energy, wind power energy and the like to a certain extent, and the grid-connection performance of the new energy is enlarged. With the increasing demand of modern society for electric energy, the requirement for energy storage technology is also increasing. The existing battery charging and replacing control system adopts a low-power charging module to realize a battery charging function, the system is provided with a plurality of unidirectional charging modules, each charging module charges one battery, the power of the charging modules is low, the efficiency is low, the disturbance to a power grid is large, the reliability and stability are low, and the application is not flexible.
Disclosure of Invention
In view of the above, it is necessary to provide a charging and replacing control system and a charging and replacing cabinet.
A charging and battery-replacing control system comprises a direct-current bus, a plurality of bidirectional AC/DC converters, a plurality of bidirectional DC/DC converters, an energy management unit and a plurality of energy storage batteries; the direct current bus comprises a bidirectional high-power rectification module; the input ends of the bidirectional AC/DC converters are connected with a mains supply, and the output ends of the bidirectional AC/DC converters are connected with the direct current bus and used for converting the mains supply into charging energy; the bidirectional DC/DC converter comprises a plurality of new energy bidirectional DC/DC converters and a plurality of battery bidirectional DC/DC converters, wherein the input ends of the new energy bidirectional DC/DC converters are respectively connected with a plurality of new energy power generation modules, and the output ends of the new energy bidirectional DC/DC converters are connected with the direct current bus; the input ends of the battery bidirectional DC/DC converters are connected with the direct current bus, and the output ends of the battery bidirectional DC/DC converters are respectively connected with the energy storage batteries; the number of the battery bidirectional DC/DC converters is the same as that of the energy storage batteries; the new energy bidirectional DC/DC converter is used for converting the electric energy generated by the new energy power generation module into charging energy; the battery bidirectional DC/DC converter is used for charging the energy storage battery by using charging energy in the direct current bus; the energy management unit is respectively connected with the plurality of bidirectional AC/DC converters and the plurality of bidirectional DC/DC converters and is used for respectively controlling the working states of the plurality of bidirectional AC/DC converters and the plurality of bidirectional DC/DC converters; the energy storage battery is used for storing or releasing charging energy.
According to the charging and battery-replacing control system, the bidirectional high-power rectifier module is used for forming the direct-current bus, so that disturbance to a power grid can be reduced, and the efficiency is improved. When the commercial power is used for charging, the commercial power is rectified through the plurality of bidirectional AC/DC converters and then is input into the direct current bus to supply power to the direct current bus, and meanwhile, electric energy generated by the new energy power generation module is rectified through the plurality of new energy bidirectional DC/DC converters and then supplies power to the direct current bus; the battery bidirectional DC/DC converters charge the energy storage battery by using the electric energy in the direct current bus. After the mains supply is powered off, the energy management unit can control some of the battery DC/DC converters to work in a discharging state according to the electric energy condition of each energy storage battery so as to charge other energy storage batteries, and the battery replacement process is completed quickly. The energy management unit can also control the battery DC/DC converter to work in a discharging state and control the bidirectional AC/DC converter to work in an independent power supply state according to conditions, so that power is reversely supplied to an important load on an alternating current side, and a standby power function is realized.
In one embodiment, the energy management unit is connected to the plurality of bidirectional AC/DC converters and the plurality of bidirectional DC/DC converters through a fast communication bus, and power control, mode switching, and energy scheduling are performed on the plurality of bidirectional AC/DC converters and the plurality of bidirectional DC/DC converters through the fast communication bus.
In one embodiment, the energy management unit is further connected to the plurality of bidirectional AC/DC converters and the plurality of bidirectional DC/DC converters through a monitoring communication bus, and data transmission to the plurality of bidirectional AC/DC converters and the plurality of bidirectional DC/DC converters is realized through the monitoring communication bus; the data includes a charging voltage and a charging current.
In one embodiment, the battery charging and replacing control system further includes a battery allocation management unit, which is respectively connected to the plurality of energy storage batteries and is configured to detect and manage charging and discharging conditions of the plurality of energy storage batteries.
A charging and swapping cabinet comprising the charging and swapping control system according to any one of the embodiments; and the new energy power generation module is connected with the charging and battery-replacing control system and is used for generating electric energy by using new energy.
In one embodiment, the new energy power generation module includes a photovoltaic power generation assembly, and is connected to the charging and battery-replacing control system, and is configured to generate electric energy by using light energy.
In one embodiment, the charging and replacing cabinet further includes a moving loop control unit connected to the charging and replacing control system, and configured to measure an ambient temperature, an ambient humidity, a charging voltage, and a charging current.
In one embodiment, the battery charging and replacing cabinet further includes a display module connected to the moving loop control unit for displaying an ambient temperature, an ambient humidity, a charging voltage, and a charging current.
In one embodiment, the battery charging and replacing cabinet further comprises a heating unit connected to the moving ring control unit, and configured to heat the battery charging and replacing cabinet when the ambient temperature is too low; and the refrigerating unit is connected with the moving ring control unit and used for refrigerating the charging and replacing battery cabinet when the ambient temperature is overhigh.
In one embodiment, the charging and replacing cabinet further comprises a fire fighting unit connected to the moving loop control unit, and configured to perform fire extinguishing processing on the charging and replacing cabinet when the ambient temperature exceeds a preset safe temperature.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a block diagram of a charging and swapping control system according to an embodiment of the present invention;
fig. 2 is a block diagram of a charging and swapping control system according to another embodiment of the present invention;
fig. 3 is a charging energy flow diagram of a charging and swapping control system according to an embodiment of the present invention;
fig. 4 is an energy flow diagram of the charging and replacing control system according to an embodiment of the present invention during fast charging of the battery;
fig. 5 is a reverse power supply flow diagram of the charging and replacing control system after the power failure of the commercial power according to one embodiment of the present invention;
fig. 6 is a block diagram of a charging and converting cabinet according to an embodiment of the present invention;
fig. 7 is a block diagram of a charging and converting cabinet according to another embodiment of the present invention.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Embodiments of the present application are set forth in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be connected to the other element through intervening elements. Further, "connection" in the following embodiments is understood to mean "electrical connection", "communication connection", or the like, if there is a transfer of electrical signals or data between the connected objects.
As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," etc., specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof. Also, as used in this specification, the term "and/or" includes any and all combinations of the associated listed items.
The existing battery charging and replacing control system adopts a low-power charging module to realize the function of charging a battery, so that a plurality of unidirectional charging modules need to be configured in the existing battery charging and replacing control system, each unidirectional charging module charges one battery, but the unidirectional charging modules have the advantages of small charging power, low efficiency, large disturbance to a power grid, low reliability and stability and inflexible application. Therefore, the invention provides a charging and battery-replacing control system which can improve the charging efficiency and has small disturbance to a power grid. Fig. 1 is a block diagram of a charging and switching control system according to an embodiment of the present invention, where the charging and switching control system includes a DC bus 100, a plurality of bidirectional AC/DC converters 200, a plurality of bidirectional DC/DC converters 300, an energy management unit 400, and a plurality of energy storage batteries 500.
The direct current bus 100 comprises a bidirectional high-power rectification module; the input ends of the bidirectional AC/DC converters 200 are connected to the mains supply, and the output ends of the bidirectional AC/DC converters 200 are connected to the DC bus 100, so as to convert the mains supply into charging energy. The bidirectional DC/DC converter 300 includes a plurality of new energy bidirectional DC/DC converters 310 and a plurality of battery bidirectional DC/DC converters 320, wherein input terminals of the plurality of new energy bidirectional DC/DC converters 310 are respectively connected to the plurality of new energy power generation modules, and output terminals of the plurality of new energy bidirectional DC/DC converters 310 are connected to the DC bus 100. The input ends of the battery bidirectional DC/DC converters 320 are connected to the DC bus 100, and the output ends of the battery bidirectional DC/DC converters 320 are respectively connected to the energy storage batteries 500. The number of the battery bidirectional DC/DC converters 320 is the same as that of the energy storage batteries 500; the new energy bidirectional DC/DC converter 310 is configured to convert the electric energy generated by the new energy power generation module into charging energy. The battery bidirectional DC/DC converter 320 is used for charging the energy storage battery 500 by using the charging energy in the DC bus 100. The energy management unit 400 is connected to the plurality of bidirectional AC/DC converters 200 and the plurality of bidirectional DC/DC converters 300, respectively, and is configured to control the operating states of the plurality of bidirectional AC/DC converters 200 and the plurality of bidirectional DC/DC converters 300, respectively. The energy storage battery 500 is used for storing or releasing charging energy.
The charging and battery-replacing control system provided by the invention uses a bidirectional high-power rectifier module to form the direct-current bus 100, and the bidirectional high-power rectifier module can reduce disturbance to a power grid and improve charging efficiency. When the commercial power is used for charging, the commercial power is rectified by the bidirectional AC/DC converters 200 and then is input into the direct current bus 100 so as to supply power to the direct current bus 100; meanwhile, electric energy generated by the new energy power generation module is rectified by the plurality of new energy bidirectional DC/DC converters 310 and then input into the DC bus 100, so as to supply power to the DC bus 100. The plurality of battery bidirectional DC/DC converters 320 charge the energy storage battery 500 with the electric energy in the DC bus 100. When the utility power is cut off, the energy management unit 400 may control some of the battery DC/DC converters 320 to operate in a discharging state according to the power condition of each energy storage battery 500, so as to charge other energy storage batteries 500, thereby completing the battery replacement process quickly. The energy management unit 400 may further control the battery DC/DC converter 320 to operate in a discharging state and control the bidirectional AC/DC converter 200 to operate in an independent power supply state according to the situation, so as to reversely supply power to the important load on the AC side, thereby implementing a power backup function.
Fig. 2 is a block diagram of a charging and switching control system according to another embodiment of the present invention, in one embodiment, the energy management unit 400 is respectively connected to the bidirectional AC/DC converters 200 and the bidirectional DC/DC converters 300 through a fast communication bus, and power control, mode switching, and energy scheduling are performed on the bidirectional AC/DC converters 200 and the bidirectional DC/DC converters 300 through the fast communication bus. Fig. 3 is a charging energy flow diagram of a charging and switching control system according to an embodiment of the present invention, where arrows indicate energy flow directions when commercial power can normally supply power to the charging and switching control system, the commercial power is rectified and input to the DC bus 100 through the bidirectional AC/DC converter 200, a new energy power generation module supplies power to the DC bus 100 through the new energy bidirectional DC/DC converter 320, a DC voltage in the DC bus 100 charges the energy storage battery 500 through the battery DC/DC converter 310, and a charging curve of the DC bus 100 when charging the energy storage battery 500 meets a charging requirement of the energy storage battery 500.
After the power failure Of the utility power, the energy management unit 400 obtains the SOC (State Of Charge) condition Of each energy storage battery 500 through the fast communication bus. SOC is the ratio of the remaining capacity of an energy storage battery after a period of use or long standing without use to its fully charged state of capacity, expressed in percent. The value range of the SOC is 0-1, when the SOC is 0, the battery is completely discharged, and when the SOC is 1, the battery is completely charged. Fig. 4 is a power flow diagram of a charging and replacing control system according to an embodiment of the present invention for performing fast battery charging, where arrows indicate the flow direction of energy when a portion of energy storage batteries are fast charged after a commercial power is lost. The energy management unit 400 determines which energy storage batteries 500 need to call other battery DC/DC converters to charge the energy storage batteries 500 according to the SOC of each energy storage battery 500, and controls to switch the working mode of the battery DC/DC converter 320 in the idle state, so that the battery DC/DC converter 320 works in the discharge state to charge the energy storage batteries 500 needing to be charged, thereby rapidly completing the battery replacement process. Fig. 5 is a reverse power supply flow diagram of the charging and replacing control system after the power failure of the commercial power according to an embodiment of the present invention, where an arrow indicates an energy flow direction when the charging and replacing control system supplies power reversely after the power failure of the commercial power. After the commercial power is cut off, the energy management unit 500 may also use the fast communication bus to schedule the battery DC/DC converter 320 to operate in a discharging state, and to make the bidirectional AC/DC converter 200 operate in an independent power supply state, so as to supply power to the important load on the AC side in a reverse direction, thereby completing the power supply function.
In one embodiment, the energy management unit 500 is further connected to the plurality of bidirectional AC/DC converters 200 and the plurality of bidirectional DC/DC converters 300 through a monitoring communication bus, and data transmission is implemented to the plurality of bidirectional AC/DC converters 200 and the plurality of bidirectional DC/DC converters 300 through the monitoring communication bus; the data includes a charging voltage and a charging current. The energy management unit 500 may acquire the charging voltage and the charging current of each of the bidirectional AC/ DC converters 200 and 300, and may also acquire charging information such as the temperature of each of the bidirectional AC/ DC converters 200 and 300, by using the monitoring communication bus. The energy management unit 500 may monitor the charging and switching process of the charging and switching control system in real time by obtaining the information, so as to implement power control, mode switching, and energy scheduling of the plurality of bidirectional AC/DC converters and the plurality of bidirectional DC/DC converters through the fast communication bus, thereby ensuring high efficiency and safety of the charging and switching process of the charging and switching control system.
In one embodiment, the battery charging and replacing control system further includes a battery allocation management unit (not shown). The battery allocation management unit is respectively connected to the plurality of energy storage batteries 500, and is configured to detect and manage charging and discharging conditions of the plurality of energy storage batteries 500. When the charging and replacing control system charges and replaces the energy storage battery 500, the battery allocation management unit acquires the SOC data of the energy storage battery 500, and determines the charging and discharging conditions of each energy storage battery 500 according to the SOC data, thereby ensuring the high efficiency and stability of the charging and replacing process.
The invention also provides a charging and battery-replacing cabinet, and fig. 6 is a structural block diagram of the charging and battery-replacing cabinet according to one embodiment of the invention. The charging and replacing battery cabinet comprises the charging and replacing battery control system 10 and the new energy power generation module 20 according to any one of the above embodiments. The new energy power generation module 20 is connected to the battery charging and replacing control system 10, and is configured to generate electric energy by using new energy. The charging and battery-replacing control system 10 uses a bidirectional high-power rectifier module to form the dc bus 100, and the bidirectional high-power rectifier module can reduce disturbance to a power grid and improve charging efficiency. When the commercial power is used for charging, the commercial power is rectified by the bidirectional AC/DC converters 200 and then is input into the direct current bus 100 so as to supply power to the direct current bus 100; meanwhile, the electric energy generated by the new energy power generation module 20 is rectified by the plurality of new energy bidirectional DC/DC converters 310 and then input into the DC bus 100, so as to supply power to the DC bus 100. The plurality of battery bidirectional DC/DC converters 320 charge the energy storage battery 500 with the electric energy in the DC bus 100. When the utility power is cut off, the energy management unit 400 may control some of the battery DC/DC converters 320 to operate in a discharging state according to the power condition of each energy storage battery 500, so as to charge other energy storage batteries 500, thereby completing the battery replacement process quickly. The energy management unit 400 may further control the battery DC/DC converter 320 to operate in a discharging state and control the bidirectional AC/DC converter 200 to operate in an independent power supply state according to the situation, so as to reversely supply power to the important load on the AC side, thereby implementing a power backup function. The charging and power-exchanging cabinet provided by the invention has the advantages of large charging power, high charging efficiency, small power grid disturbance, high reliability and stability, flexible application and capability of quickly completing power exchanging and power standby processes when the mains supply is powered down.
In one embodiment, the new energy generation module 20 includes a photovoltaic power generation assembly (not shown). The photovoltaic power generation assembly is connected with the battery charging and replacing control system 10 and is used for generating electric energy by utilizing light energy. Photovoltaic power generation is a technology of directly converting light energy into electric energy by using the photovoltaic effect of a semiconductor interface. When photons irradiate on the metal, the energy of the photons can be completely absorbed by certain electrons in the metal, and when the energy absorbed by the electrons is large enough, the photons can overcome the internal attraction of the metal to do work, and the photons leave the surface of the metal to escape and become photoelectrons. The photovoltaic power generation assembly mainly comprises a solar panel (assembly), a controller and an inverter. Because conventional energy sources are very limited, new energy power generation modes such as photovoltaic power generation and the like have the advantages of sufficient cleanness, absolute safety, relative universality, actual long service life and maintenance-free property, resource sufficiency, potential economy and the like. The application provides fill and trade the battery cabinet and can insert for example new forms of energy power generation modules such as photovoltaic power generation subassembly in order to constitute light, electric charging and trade electric system, make fill and trade the battery cabinet and use clean energy, guarantee this battery cabinet's environmental friendliness and use flexibility.
Fig. 7 is a block diagram of a charging and power-exchanging cabinet according to another embodiment of the present invention, wherein in one embodiment, the charging and power-exchanging cabinet further includes a dynamic loop control unit 30. The moving loop control unit 30 is connected to the charging and replacing control system 10, and is configured to measure an ambient temperature, an ambient humidity, a charging voltage, and a charging current. The moving loop control unit 30 is configured to monitor environmental variables in the charging and transforming cabinet, such as ambient temperature, ambient humidity, and charging voltage and charging current in the charging and transforming control system. The moving loop control unit 30 may include a temperature sensor, a humidity sensor, a current transformer, a voltage transformer, and other data acquisition devices to measure the ambient temperature, the ambient humidity, the charging voltage, and the charging current. The moving loop control unit 30 determines whether the working state in the charging and converting cabinet is normal or not and whether safety accidents such as fire occur or not according to the data information, so as to ensure the working safety of the charging and converting cabinet.
In one embodiment, the battery charging and replacing cabinet further comprises a display module 40. The display module 40 is connected to the moving loop control unit 30, and is configured to display an ambient temperature, an ambient humidity, a charging voltage, and a charging current. The moving loop control unit 30 transmits the information to the display module 40 after acquiring the information, and the display module 40 can display the information for the staff to use as a reference during operation, so as to improve the application flexibility of the battery charging and replacing cabinet.
In one embodiment, the charging and replacing cabinet further comprises a heating unit 50 and a cooling unit 60. The heating unit 50 is connected to the moving-ring control unit 30, and is configured to heat the battery charging and replacing cabinet when the ambient temperature is too low. The refrigerating unit 60 is connected to the moving loop control unit 30, and is configured to refrigerate the charging and replacing battery cabinet when the ambient temperature is too high. The moving loop control unit 30 collects the ambient temperature, and determines whether the ambient temperature in the charging and converting cabinet is too high or too low according to the ambient temperature. If ambient temperature in the charging and switching cabinet is too low, and the normal working operation state of components in the cabinet can be influenced, the moving ring control unit 30 controls the heating unit 50 to heat the charging and switching cabinet, so as to ensure that the components in the cabinet can work normally. When the ambient temperature in the charging and replacing cabinet is too high, the components in the cabinet may be damaged due to the operation in an overheat state, and at this time, the moving-ring control unit 30 controls the refrigeration unit 50 to refrigerate the charging and replacing cabinet, so as to ensure that the performance of the components in the cabinet is not affected by the too high operation temperature.
In one embodiment, the charging and battery replacing cabinet further comprises a fire fighting unit 70. The fire fighting unit 70 is connected to the moving loop control unit 30, and is configured to perform fire extinguishing processing on the charging and replacing battery cabinet when the ambient temperature exceeds a preset safe temperature. When the dynamic ring control unit 30 determines that the acquired environmental temperature is too high and exceeds a preset safety temperature, it indicates that a fire may have occurred in the charging and changing cabinet, and at this time, the dynamic ring control unit 30 controls the fire fighting unit 70 to perform fire extinguishing treatment on the charging and changing cabinet to prevent a fire from spreading to cause a more serious safety accident, so as to ensure the safety of the charging and changing cabinet and the application of the charging and changing cabinet.
In the description herein, references to the description of "some embodiments," "other embodiments," "desired embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic description of the above terminology may not necessarily refer to the same embodiment or example.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A charging and battery-replacing control system is characterized by comprising a direct current bus, a plurality of bidirectional AC/DC converters, a plurality of bidirectional DC/DC converters, an energy management unit and a plurality of energy storage batteries;
the direct current bus comprises a bidirectional high-power rectification module;
the input ends of the bidirectional AC/DC converters are connected with a mains supply, and the output ends of the bidirectional AC/DC converters are connected with the direct current bus and used for converting the mains supply into charging energy;
the bidirectional DC/DC converter comprises a plurality of new energy bidirectional DC/DC converters and a plurality of battery bidirectional DC/DC converters, wherein the input ends of the new energy bidirectional DC/DC converters are respectively connected with a plurality of new energy power generation modules, and the output ends of the new energy bidirectional DC/DC converters are connected with the direct current bus; the input ends of the battery bidirectional DC/DC converters are connected with the direct current bus, and the output ends of the battery bidirectional DC/DC converters are respectively connected with the energy storage batteries; the number of the battery bidirectional DC/DC converters is the same as that of the energy storage batteries; the new energy bidirectional DC/DC converter is used for converting the electric energy generated by the new energy power generation module into charging energy; the battery bidirectional DC/DC converter is used for charging the energy storage battery by using charging energy in the direct current bus;
The energy management unit is respectively connected with the plurality of bidirectional AC/DC converters and the plurality of bidirectional DC/DC converters and is used for respectively controlling the working states of the plurality of bidirectional AC/DC converters and the plurality of bidirectional DC/DC converters;
the energy storage battery is used for storing or releasing charging energy.
2. The battery charging and replacing control system according to claim 1, wherein the energy management unit is connected to the plurality of bidirectional AC/DC converters and the plurality of bidirectional DC/DC converters through a fast communication bus, and power control, mode switching, and energy scheduling are performed on the plurality of bidirectional AC/DC converters and the plurality of bidirectional DC/DC converters through the fast communication bus.
3. The battery charging and replacing control system according to claim 2, wherein the energy management unit is further connected to the plurality of bidirectional AC/DC converters and the plurality of bidirectional DC/DC converters through a monitoring communication bus, and data transmission to the plurality of bidirectional AC/DC converters and the plurality of bidirectional DC/DC converters is realized through the monitoring communication bus; the data includes a charging voltage and a charging current.
4. The battery charging and replacing control system of claim 1, further comprising:
and the battery distribution management unit is respectively connected with the energy storage batteries and is used for detecting and managing the charging and discharging conditions of the energy storage batteries.
5. A charging and power conversion cabinet, comprising:
the battery charging and replacing control system as claimed in any one of claims 1-4;
and the new energy power generation module is connected with the charging and battery-replacing control system and is used for generating electric energy by using new energy.
6. The charging and conversion cabinet of claim 5, wherein the new energy power generation module comprises:
and the photovoltaic power generation assembly is connected with the charging and battery-replacing control system and is used for generating electric energy by utilizing light energy.
7. The charging and conversion cabinet of claim 5, further comprising:
and the moving ring control unit is connected with the charging and battery-replacing control system and is used for measuring the ambient temperature, the ambient humidity, the charging voltage and the charging current.
8. The charging and conversion cabinet of claim 7, further comprising:
and the display module is connected with the moving ring control unit and used for displaying the ambient temperature, the ambient humidity, the charging voltage and the charging current.
9. The charging and conversion cabinet of claim 7, further comprising:
the heating unit is connected with the moving ring control unit and used for heating the battery charging and replacing cabinet when the ambient temperature is too low;
and the refrigerating unit is connected with the moving ring control unit and used for refrigerating the charging and replacing battery cabinet when the ambient temperature is overhigh.
10. The charging and conversion cabinet of claim 7, further comprising:
and the fire fighting unit is connected with the moving ring control unit and used for carrying out fire extinguishing treatment on the charging and replacing battery cabinet when the environmental temperature exceeds a preset safety temperature.
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| CN202010674866.6A CN111864778A (en) | 2020-07-14 | 2020-07-14 | Charging and battery replacing control system and charging and battery replacing cabinet |
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| CN202010674866.6A CN111864778A (en) | 2020-07-14 | 2020-07-14 | Charging and battery replacing control system and charging and battery replacing cabinet |
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| CN111864778A true CN111864778A (en) | 2020-10-30 |
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| CN112803480A (en) * | 2021-01-13 | 2021-05-14 | 阳光电源股份有限公司 | Optical storage system and control method thereof |
| CN113281672A (en) * | 2021-05-12 | 2021-08-20 | 阳光电源股份有限公司 | Battery pack detection control method, energy storage conversion system and computer readable storage medium |
| CN113346584A (en) * | 2021-06-07 | 2021-09-03 | 易事特集团股份有限公司 | Intelligent battery charging and replacing system and method supporting battery charging and replacing after power failure and storage medium |
| CN114268156A (en) * | 2021-12-28 | 2022-04-01 | 苏州祎储能源科技有限公司 | Charging and battery-replacing cabinet |
| CN114389346A (en) * | 2022-03-22 | 2022-04-22 | 深圳市菲尼基科技有限公司 | Multi-path power supply device of battery replacing cabinet |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112803480A (en) * | 2021-01-13 | 2021-05-14 | 阳光电源股份有限公司 | Optical storage system and control method thereof |
| CN113281672A (en) * | 2021-05-12 | 2021-08-20 | 阳光电源股份有限公司 | Battery pack detection control method, energy storage conversion system and computer readable storage medium |
| CN113281672B (en) * | 2021-05-12 | 2024-04-12 | 阳光电源股份有限公司 | Battery pack detection control method, energy storage conversion system and computer readable storage medium |
| CN113346584A (en) * | 2021-06-07 | 2021-09-03 | 易事特集团股份有限公司 | Intelligent battery charging and replacing system and method supporting battery charging and replacing after power failure and storage medium |
| CN116137940A (en) * | 2021-09-18 | 2023-05-19 | 宁德时代新能源科技股份有限公司 | Charging method, charging device and charging system of power battery |
| CN116137940B (en) * | 2021-09-18 | 2024-02-20 | 宁德时代新能源科技股份有限公司 | Charging method, charging device and charging system of power battery |
| CN114268156A (en) * | 2021-12-28 | 2022-04-01 | 苏州祎储能源科技有限公司 | Charging and battery-replacing cabinet |
| CN114268156B (en) * | 2021-12-28 | 2024-04-23 | 苏州祎储能源科技有限公司 | Charging and changing cabinet |
| CN114389346A (en) * | 2022-03-22 | 2022-04-22 | 深圳市菲尼基科技有限公司 | Multi-path power supply device of battery replacing cabinet |
| CN114884116A (en) * | 2022-06-07 | 2022-08-09 | 国网湖北综合能源服务有限公司 | Power circuit, new energy control system and energy coordination method |
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