CN215580400U - Low-carbon design framework for charging and discharging energy storage device - Google Patents
Low-carbon design framework for charging and discharging energy storage device Download PDFInfo
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- CN215580400U CN215580400U CN202121782527.6U CN202121782527U CN215580400U CN 215580400 U CN215580400 U CN 215580400U CN 202121782527 U CN202121782527 U CN 202121782527U CN 215580400 U CN215580400 U CN 215580400U
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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
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
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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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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Abstract
The utility model relates to the technical field of charging and discharging of an energy storage device, including but not limited to the technical field of battery formation and capacity grading, the technical field of battery detection and the technical field of application of the energy storage device based on charging and discharging, in particular to a charging and discharging energy supply and energy utilization framework of the energy storage device. The energy storage device comprises photovoltaic power supply equipment, an energy storage device unit for energy storage, central control equipment, an AC/DC bidirectional inverter power supply and an energy storage device charging and discharging unit; the photovoltaic power supply equipment, the energy storage unit, the AC/DC bidirectional inverter power supply and the energy storage device charging and discharging unit are respectively connected to the direct current bus through copper bars; the central control equipment is respectively connected with the photovoltaic power supply equipment, the energy storage unit, the AC/DC bidirectional inverter power supply and the energy storage device charging and discharging unit through communication cables. The framework designed by the utility model is cooperated with clean energy, the energy storage device unit for energy storage and the commercial power provide energy for charging and discharging of the energy storage device and energy consumption, the electric energy conversion efficiency is improved, the production cost is reduced, and the carbon neutralization scheme applied by the technology is realized.
Description
Technical Field
The utility model relates to the technical field of charging and discharging of an energy storage device, including but not limited to the technical field of battery formation and capacity grading, the technical field of battery detection and the technical field of application of the energy storage device based on charging and discharging, in particular to a charging and discharging energy supply and energy utilization framework of the energy storage device.
Background
The current energy storage device is charged and discharged by using alternating current of 220V or 380V commercial power. During charging, the AC/DC converts alternating current into direct current to supply power to the direct current bus; the DC/DC enables charging of the energy storage device. When discharging, the electric energy of the energy storage device is converted into direct current through the DCDC to be supplied to the direct current bus, and then is converted back to 220V or 380V commercial power through the ACDC. The method basically adopts commercial power consumption, and does not accord with the low-carbon development direction.
Clean energy such as photovoltaic energy, wind energy and the like is adopted to generate power to a public power grid and then converted into 220V or 380V mains supply to provide alternating current for charging and discharging of the energy storage device; the electric energy discharged by the energy storage device is converted back to 220V or 380V commercial power. The method conforms to the low-carbon development direction, but the electric energy utilization efficiency needs to be improved, and in addition, the intermittence of clean energy cannot meet the engineering reliability requirement of charging and discharging of the energy storage device based on the application of the industrial field.
Disclosure of Invention
The present invention is directed to a low-carbon architecture for charging and discharging an energy storage device, so as to solve the problems in the background art.
In order to solve the technical problems, the utility model provides a low-carbon design framework for charging and discharging an energy storage device, which comprises a photovoltaic power supply, an energy storage unit, a central control device, an AC/DC bidirectional inverter and an energy storage device charging and discharging unit;
the photovoltaic power supply, the energy storage unit, the AC/DC bidirectional inverter and the energy storage device charging and discharging unit are respectively connected to a direct current bus through copper bars, so that the direct current bus is shared;
the central control equipment is respectively connected with the photovoltaic power supply, the energy storage unit, the AC/DC bidirectional inverter and the energy storage device charging and discharging unit through communication cables and is used for centralized control and scheduling of all units.
As a further improvement of the technical scheme, the charging and discharging voltages of the energy storage unit are 0-6V, 6-200V and 200-30000V, and the voltage of the direct current bus is 110% -300% of the minimum unit voltage of the energy storage unit.
As a further improvement of the present technical solution, the central control device connects the respective devices and units through different communication cables.
Compared with the prior art, the utility model has the beneficial effects that:
1. the charging and discharging low-carbon design framework of the energy storage device adopts a novel energy photovoltaic power supply to supply power to equipment, so that the production cost of an enterprise is reduced while clean energy is used; the energy storage unit is used for storing the residual electric quantity of the photovoltaic power supply in the daytime and providing energy for the direct-current bus at night; the AC/DC unit is used for supplying commercial power to the unit and the energy storage unit when the photovoltaic power supply is insufficient, so that the working of the charging and discharging unit of the energy storage device is met; the central control equipment is responsible for transmitting data and reasonably allocating the work of the modules according to the load capacity and the working condition of each module;
2. the energy storage device charge-discharge low-carbon design architecture adopts a novel bright and clean energy photovoltaic cell to supply power to a direct current bus, an energy storage unit to store redundant electric quantity, an AC/DC bidirectional inverter to assist in supplementing hidden danger deficient energy and releasing redundant energy of the direct current bus, and aiming at night or when the photovoltaic energy cannot normally work, the energy storage unit can uninterruptedly supply power to the direct current bus and replace the photovoltaic energy to enable the energy storage device charge-discharge unit to work;
3. the energy storage device range includes: the minimum unit (0-6V) of the energy storage device, the energy storage device module (6-200V) and the energy storage device system unit (200-3000V).
Drawings
FIG. 1 is a schematic diagram of a conventional energy storage device charging and discharging architecture according to the present invention;
FIG. 2 is a schematic diagram of a low-carbon charging and discharging architecture of the energy storage device according to the present invention;
FIG. 3 is a structural diagram illustrating a deformation of a low-carbon charging and discharging framework of the energy storage device according to the present invention;
FIG. 4 is a schematic diagram of the connection of the central control device in the present invention;
FIG. 5 is a schematic diagram of the operation of the photovoltaic power supply of the present invention;
FIG. 6 is a schematic diagram of the operation of the energy storage unit according to the present invention;
fig. 7 is a schematic diagram of the operation of the photovoltaic power supply in the situation of insufficient power supply.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 2 to 4, the present embodiment provides a low-carbon design architecture for charging and discharging an energy storage device, including a photovoltaic power supply, an energy storage unit, a central control device, an AC/DC bidirectional inverter, and an energy storage device charging and discharging unit; the photovoltaic power supply, the energy storage unit, the AC/DC bidirectional inverter and the energy storage device charging and discharging unit are respectively connected to the direct current bus through copper bars, so that the direct current bus is shared; the central control equipment is respectively connected with the photovoltaic power supply, the energy storage unit, the AC/DC bidirectional inverter and the energy storage device charging and discharging unit through communication cables and is used for centralized control and scheduling of all the units.
Specifically, the architecture of this embodiment adopts the central control device to adopt centralized unified scheduling for the seamless connection work among the modules, saves electric energy, and reduces energy consumption caused by charging and discharging of the energy storage device.
In the embodiment, the framework comprises a photovoltaic power supply serving as a direct-current bus power supply unit, so that the carbon emission caused by charging and discharging power consumption of the energy storage device is basically reduced to zero, and the purposes of energy conservation and emission reduction are achieved.
Further, the design parameters of the photovoltaic power supply include the following:
step1, using a photovoltaic power supply as a clean energy source; the selection of the energy completely accords with the low-carbon strategy;
step2, the utility model is suitable for the application scenarios of the energy storage unit, namely the energy storage device minimum unit (0-6V), the energy storage device module (6-200V) and the energy storage device system (200-3000V), the direct current bus voltage needs to be adjusted according to the change of the type of the energy storage device, and the bus voltage selection criterion is as follows: the voltage of the DC bus of the minimum unit of the energy storage device is selected to be 200-300% of the voltage of the minimum unit of the energy storage device; the direct current bus voltage of the energy storage device module unit is selected to be 110-130% of the voltage of the energy storage device module; the direct current bus voltage of the energy storage device system unit is selected from 110-130% of the energy storage device system voltage, and the bus voltage is sometimes not limited in the range due to large changes of customer tools and loads on the load side, but the bus voltage is within the protection range of the utility model.
In this embodiment, the framework includes an energy storage unit, which can store the redundant electric quantity of the dc bus, and when the voltage of the dc bus is lower than the required voltage or meets a certain algorithm, the electric quantity of the dc bus can be supplied automatically to meet the electric quantity supply of the dc bus.
The energy storage unit is mainly used for storing the residual electric quantity after the photovoltaic power supply supplies power to the energy storage device charging and discharging unit in the daytime, and when the photovoltaic power supply cannot provide enough energy at night, the energy of the direct current bus is basically provided by the unit module.
Further, the design parameters of the energy storage unit include the following:
step1, an energy storage unit non-test unit: the requirements on design parameters of the DC/DC unit can be reduced, and only the safety and reliability of work need to be kept; the design cost of the energy storage unit hardware is greatly reduced by the unit design;
step2, selecting the load of the energy storage unit: the battery can be used in a gradient way, but the design capacity requirement must be met, and the load is not limited to the battery.
Specifically, the energy storage unit capacity: the energy storage capacity can at least meet the requirement of several times of the output capacity of the charging and discharging unit of the energy storage device, and can be increased on the premise of not considering the initial hardware input cost.
In the embodiment, the design of the bidirectional AC/DC inverter is changed in capacity selection, and only auxiliary energy supplement and redundant energy release are carried out according to the action of the bidirectional AC/DC inverter; the AC/DC bidirectional inverter is no longer used as the only device for mainly stabilizing the direct current bus, the design needs to be used as an auxiliary energy interaction device, and the AC/DC bidirectional inverter can be used for auxiliary purposes only when the energy storage unit cannot meet or fails, so that the power of the AC/DC is reduced in a large proportion.
Therefore, the capacity of the bidirectional AC/DC inverter can be configured correspondingly according to the selection of the energy storage unit and the photovoltaic energy capacity.
Furthermore, it is worth mentioning that the functional design of the bidirectional AC/DC inverter is basically not used in the non-abnormal state.
In this embodiment, as shown in fig. 4, the central control device is connected to each device and unit through different communication cables, and the central control device mainly functions to control and allocate the working modes among the photovoltaic power supply, the energy storage unit, and the bidirectional AC/DC inverter through a special algorithm so as to cooperate with the normal operation of the charging and discharging units of the energy storage device to complete energy interaction among the modules, thereby achieving the purpose of energy saving.
The communication line does not limit the communication mode, and only needs to meet the control requirement; meanwhile, when the charge and discharge unit of the energy storage device is controlled to work normally, reasonable algorithms are adopted to control the working time of each device and unit module, the reasonable distribution of capacity, energy storage, energy utilization and energy feedback is met, and the cost of the energy storage device during the charge and discharge working period is minimized.
As shown in fig. 5-7, the present embodiment provides a low-carbon design method for charging and discharging an energy storage device, and a low-carbon design architecture for charging and discharging the energy storage device.
As shown in fig. 5, when the photovoltaic power supply operates, the work flow includes the following steps:
s1.1, providing energy of a direct current bus by the operation of a photovoltaic power supply;
s1.2, energy is mainly supplied to a charging and discharging unit of the energy storage device for use;
s1.3, the redundant electric quantity is preferentially provided for the energy storage unit to store the electric quantity;
s1.4, if the surplus electric quantity is still needed, feeding the AC/DC inversion unit to the commercial power;
s1.5, if the redundant energy still exists, the central control device can control the photovoltaic power supply to stop working.
In this embodiment, as shown in fig. 6, when the energy storage unit works, the working process includes the following steps:
s2.1, when the photovoltaic power supply cannot provide energy for the direct-current bus, the energy storage unit starts to work and provides energy for the energy storage device charging and discharging unit;
and S2.2, if the central control equipment can not completely meet the work of the charging and discharging unit of the energy storage device only by depending on the energy storage unit through calculation, the AC/DC inversion unit needs to provide energy for the direct current bus in advance, and the work of the charging and discharging unit of the energy storage device is finally met.
The present embodiments also provide a central control apparatus comprising a processor, a memory, and a computer program stored in the memory and running on the processor.
The processor comprises one or more processing cores, the processor is connected with the memory through the bus, the memory is used for storing program instructions, and the low-carbon design framework is used for charging and discharging the energy storage device when the processor executes the program instructions in the memory.
Alternatively, the memory may be implemented using any type or combination of volatile and non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
In addition, the utility model further provides a computer-readable storage medium, wherein a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, the computer program is used for the above-mentioned low-carbon design architecture steps for charging and discharging the energy storage device.
Optionally, the present invention further provides a computer program product containing instructions, which when run on a computer, causes the computer to execute the above aspects to satisfy the low-carbon design architecture steps for charging and discharging the energy storage device.
It will be understood by those skilled in the art that all or part of the steps for the above embodiments may be implemented by hardware, or may be implemented by hardware related to instructions of a program, and the program may be stored in a computer readable storage medium, where the above mentioned storage medium may be a read-only memory, a magnetic or optical disk, etc.
The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the above embodiments and descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, which fall within the scope of the claimed invention. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (3)
1. The utility model provides a low carbon design framework of energy memory charge-discharge which characterized in that: the photovoltaic power supply device comprises a photovoltaic power supply, an energy storage unit, a central control device, an AC/DC bidirectional inverter and an energy storage device charging and discharging unit;
the photovoltaic power supply, the energy storage unit, the AC/DC bidirectional inverter and the energy storage device charging and discharging unit are respectively connected to a direct current bus through copper bars;
the central control equipment is respectively connected with the photovoltaic power supply, the energy storage unit, the AC/DC bidirectional inverter and the energy storage device charging and discharging unit through communication cables and is used for centralized control and scheduling of all units.
2. The low-carbon design architecture for charging and discharging the energy storage device according to claim 1, characterized in that: the charging and discharging voltage range of the energy storage unit comprises 0-6V, 6-200V and 200-30000V, and the voltage of the direct current bus is 110-300% of the minimum unit voltage of the energy storage unit.
3. The low-carbon design architecture for charging and discharging the energy storage device according to claim 2, characterized in that: the central control device is connected with each device and unit through different communication cables.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118399365A (en) * | 2024-06-28 | 2024-07-26 | 合肥召洋电子科技有限公司 | Energy feedback type direct current micro-grid energy storage system for battery detection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118399365A (en) * | 2024-06-28 | 2024-07-26 | 合肥召洋电子科技有限公司 | Energy feedback type direct current micro-grid energy storage system for battery detection |
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