CN217362585U - Light energy storage energy management system based on lithium titanate battery - Google Patents
Light energy storage energy management system based on lithium titanate battery Download PDFInfo
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- CN217362585U CN217362585U CN202122339280.7U CN202122339280U CN217362585U CN 217362585 U CN217362585 U CN 217362585U CN 202122339280 U CN202122339280 U CN 202122339280U CN 217362585 U CN217362585 U CN 217362585U
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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 a light energy storage energy management system based on lithium titanate battery, including the solar cell that is used for producing the electric energy and the photovoltaic inverter who is connected with solar cell, the lithium titanate battery that is used for the energy storage and the energy storage converter of control lithium titanate battery charge-discharge, power supply load, the backstage industrial computer that is used for controlling each equipment start and energy scheduling; the photovoltaic inverter is connected with first information acquisition equipment, the other end of the first information acquisition equipment is connected to an alternating current bus, the energy storage converter is connected with second information acquisition equipment, the other end of the second information acquisition equipment is connected to the alternating current bus, the lithium titanate battery is connected with third information acquisition equipment, and the alternating current bus on the inlet side of a power grid is connected with fourth information acquisition equipment; the first to third information acquisition devices are respectively in communication connection with a background industrial personal computer, and the photovoltaic inverter and the energy storage converter are respectively in communication connection with the background industrial personal computer. The utility model can be operated reliably at low temperature, and the energy utilization rate can be improved.
Description
Technical Field
The utility model relates to a miniature electric wire netting energy storage system, concretely relates to light energy storage energy management system based on lithium titanate battery.
Background
With the increasing tension of international energy supply and demand, more and more attention is paid to a distributed power generation technology and a micro-grid technology which mainly use renewable energy sources such as photovoltaic energy and the like. When renewable energy sources such as photovoltaic and the like are distributed and connected to the grid, the renewable energy sources are generally operated in a maximum power tracking mode to utilize the renewable energy sources to the maximum extent, the renewable energy sources are distributed and combined into a microgrid and have the characteristics of randomness and volatility, and a large number of distributed power sources are connected to cause impact on the large power grid and influence on power prediction of the large power grid, so that the problem of unstable distributed power generation output power needs to be solved by energy storage equipment, the utilization efficiency of resources is improved, and stable and continuous load supply is guaranteed.
The power supply system based on the light energy storage can solve the problem of inconvenient power utilization in remote areas, the photovoltaic module converts solar energy into direct current electric energy to be output, the energy storage battery stores the residual electric energy, and when the photovoltaic resources are insufficient, the electric energy can be output through battery discharge to supplement power supply. Most of the energy storage batteries commonly used at present are lead-acid batteries, the lead-acid batteries have short circulating charge and discharge life, high replacement frequency and low working reliability under a low-temperature environment. In addition, the battery in the existing renewable resource energy storage system is usually directly installed between a charging power supply and an electrical load, and the charging and discharging of the lead-acid battery depends on the difference between the photovoltaic power generation power and the electrical load power, so that the charging and discharging of the lead-acid battery are completely uncontrolled, the battery utilization rate cannot be effectively improved, and the service life of the lead-acid battery cannot be effectively prolonged.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a light energy storage energy management system based on lithium titanate battery adopts the lithium titanate battery of wide temperature performance as energy storage component, has improved the reliability of power supply work under the low temperature environment to the operation conditions of each equipment in the system can be known in real time to the information acquisition equipment through the installation, and cooperation backstage industrial computer is adjusted the charge-discharge of photovoltaic output and battery, improves the utilization ratio of the energy and the energy management and control of system.
In order to realize the above purpose, the utility model discloses the technical scheme who adopts is:
a light energy storage energy management system based on a lithium titanate battery comprises a solar battery for generating electric energy, a photovoltaic inverter connected with the solar battery, a lithium titanate battery for storing energy, an energy storage converter for controlling the charging and discharging of the lithium titanate battery, a power supply load and a background industrial personal computer for controlling the starting of each device and energy scheduling; the photovoltaic inverter is connected with first information acquisition equipment, the other end of the first information acquisition equipment is connected to an alternating current bus, the energy storage converter is connected with second information acquisition equipment, the other end of the second information acquisition equipment is connected to the alternating current bus, the lithium titanate battery is connected with third information acquisition equipment, and the alternating current bus on the inlet side of a power grid is connected with fourth information acquisition equipment; the first to third information acquisition devices are respectively in communication connection with a background industrial personal computer, and the photovoltaic inverter and the energy storage converter are respectively in communication connection with the background industrial personal computer.
Furthermore, the first to third information acquisition devices are connected with a background industrial personal computer through 485 communication lines.
Furthermore, the photovoltaic inverter and the energy storage converter are connected with a background industrial personal computer by adopting an Ethernet.
Furthermore, the first information acquisition device, the second information acquisition device and the fourth information acquisition device all adopt four-quadrant electric energy acquisition devices and are used for acquiring alternating-current side voltage, current and power.
Further, the third information acquisition equipment comprises a battery information acquisition device and an alarm information acquisition device, and the battery information acquisition device is used for acquiring the voltage, the current, the SOC and the SOH of the lithium titanate battery.
The utility model discloses a lithium titanate battery of wide temperature performance has improved the reliability of power supply work under the low temperature environment as energy storage component to the operation conditions of each equipment in the system can be known in real time through the information acquisition equipment of installing on different equipment, and the cooperation backstage industrial computer is adjusted the charge-discharge of photovoltaic output and battery, thereby can improve renewable energy's utilization ratio and the energy management and control of system.
Drawings
Fig. 1 is a schematic block diagram of an optical energy storage management system in an embodiment.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
The embodiment discloses a light energy storage energy management system based on a lithium titanate battery, which comprises a distributed energy power generation system, an energy storage system, a background industrial personal computer, a communication system, an information acquisition system and a power supply load, as shown in fig. 1. The distributed energy power generation system comprises a solar cell array formed by a plurality of groups of solar cells and a photovoltaic inverter for alternating current-direct current conversion. The solar cell array is connected with the photovoltaic inverter, the other end of the photovoltaic inverter is connected with the first information acquisition equipment, and the other end of the first information acquisition equipment is connected to the alternating current bus. The distributed energy power generation system provides electric energy for the micro-grid by using renewable resources.
The energy storage system comprises an energy storage battery array consisting of a plurality of groups of energy storage batteries and an energy storage converter (namely energy storage PCS) for controlling the charge and discharge management of the energy storage battery array. The energy storage battery in the embodiment adopts a lithium titanate battery, because the lithium titanate battery has high safety, long service life and wide working environment temperature, normal work can be ensured particularly in a low-temperature environment, and under the normal condition, the charging working temperature of the lithium titanate battery is-30-50 ℃ and the discharging working temperature is-40-75 ℃. The energy storage battery array is connected with the energy storage converter, the other end of the energy storage converter is connected with second information acquisition equipment, and the other end of the second information acquisition equipment is connected to the alternating current bus. And the energy storage battery array is also connected with a third information acquisition device, and an alternating current bus on the inlet side of the power grid is connected with a fourth information acquisition device.
The first information acquisition equipment, the second information acquisition equipment and the fourth information acquisition equipment all adopt four-quadrant electric energy acquisition devices and are mainly used for acquiring voltage, current and power of an alternating current side. And the fourth information acquisition equipment is used for acquiring the power supply voltage, the power supply current and the power supply power of the power grid. The first information acquisition equipment is used for acquiring the output voltage, the current and the output power of the photovoltaic inverter. And the second information acquisition equipment is used for acquiring the output voltage, the current and the output power of the energy storage converter. The third information acquisition equipment connected with the energy storage battery array end comprises a battery information acquisition device and an alarm information acquisition device, wherein the battery information acquisition device is used for acquiring the voltage, the current, the SOC (state of charge of the battery), the SOH (percentage of full charge capacity of the battery relative to rated capacity) and the like of the lithium titanate battery.
Each information acquisition equipment is in communication connection with the background industrial personal computer, wherein the first to third information acquisition equipment are directly connected with the background industrial personal computer through 485 communication lines, so that the intermediate link of a communication manager is omitted, the stability of communication can be improved, and the cost of communication cables is saved. And the photovoltaic inverter and the energy storage converter are in communication connection with a background industrial personal computer by adopting an Ethernet.
When the output power of the photovoltaic inverter acquired by the first information acquisition equipment is larger than the load consumption power, the background industrial personal computer can control redundant electric energy output by the photovoltaic inverter to charge the lithium titanate battery for energy storage, the energy storage converter starts a charging management mode at the moment, and the background industrial personal computer can gradually increase the charging power of the energy storage converter according to the change of the output power of the photovoltaic inverter monitored in real time, so that energy waste is avoided. After the battery is fully charged, if the output power of the photovoltaic inverter is still larger than the load power, in order to avoid electric energy networking, the background industrial personal computer can limit the output power of the photovoltaic inverter. When the output power of the photovoltaic inverter acquired by the first information acquisition equipment is not enough to meet the power consumption of the load, the background industrial personal computer can control the energy storage converter to reduce the charging power or stop charging, and at the moment, the energy storage converter starts a discharging mode and provides electric energy for the load together with the photovoltaic inverter. In order to prevent the discharged electric energy of the energy storage battery from being merged into a power grid, the background industrial personal computer can reduce the output power of the energy storage converter according to the monitored data. The utility model discloses an operation conditions of each equipment can in time be learnt to each information acquisition equipment, can in time adjust each output device's power according to the actual operation condition, has ensured not extravagant effective utilization of electric energy, also provides the guarantee for energy storage battery's safe and reliable operation.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a light energy storage energy management system based on lithium titanate battery which characterized in that: the device comprises a solar cell for generating electric energy, a photovoltaic inverter connected with the solar cell, a lithium titanate battery for storing energy, an energy storage converter for controlling the charging and discharging of the lithium titanate battery, a power supply load and a background industrial personal computer for controlling the starting and energy dispatching of each device; the lithium titanate battery is connected with third information acquisition equipment, and a fourth information acquisition equipment is connected on the alternating bus at the inlet side of a power grid; the first information acquisition equipment, the second information acquisition equipment, the third information acquisition equipment, the photovoltaic inverter and the energy storage converter are respectively in communication connection with the background industrial personal computer.
2. The optical energy storage energy management system based on the lithium titanate battery as claimed in claim 1, wherein: and the first to third information acquisition devices are connected with a background industrial personal computer by adopting 485 communication lines.
3. The optical energy storage energy management system based on the lithium titanate battery as claimed in claim 1, wherein: the photovoltaic inverter and the energy storage converter are connected with a background industrial personal computer through the Ethernet.
4. The optical energy storage energy management system based on the lithium titanate battery as claimed in claim 1, wherein: the first information acquisition equipment, the second information acquisition equipment and the fourth information acquisition equipment all adopt four-quadrant electric energy acquisition devices and are used for acquiring alternating-current side voltage, current and power.
5. The optical energy storage energy management system based on the lithium titanate battery as claimed in claim 1, wherein: the third information acquisition equipment comprises a battery information acquisition device and an alarm information acquisition device, and the battery information acquisition device is used for acquiring the voltage, the current, the SOC and the SOH of the lithium titanate battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122339280.7U CN217362585U (en) | 2021-09-26 | 2021-09-26 | Light energy storage energy management system based on lithium titanate battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122339280.7U CN217362585U (en) | 2021-09-26 | 2021-09-26 | Light energy storage energy management system based on lithium titanate battery |
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| CN217362585U true CN217362585U (en) | 2022-09-02 |
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| CN202122339280.7U Active CN217362585U (en) | 2021-09-26 | 2021-09-26 | Light energy storage energy management system based on lithium titanate battery |
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2021
- 2021-09-26 CN CN202122339280.7U patent/CN217362585U/en active Active
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