CN209767221U - photovoltaic system with super capacitor energy storage - Google Patents
photovoltaic system with super capacitor energy storage Download PDFInfo
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- CN209767221U CN209767221U CN201920809859.5U CN201920809859U CN209767221U CN 209767221 U CN209767221 U CN 209767221U CN 201920809859 U CN201920809859 U CN 201920809859U CN 209767221 U CN209767221 U CN 209767221U
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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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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to a photovoltaic system with super capacitor energy storage, its technical characterstic lies in: the solar photovoltaic power generation system comprises a photovoltaic module, an alternating current power supply, a solar controller, a super capacitor bank and a load; the output end of the photovoltaic module is respectively connected with the super capacitor bank and the load through a solar controller and is used for converting light energy into electric energy and simultaneously charging the load and the super capacitor bank through the solar controller; the output end of the super capacitor bank is connected with a load and used for supplying power to the load; the output end of the alternating current power supply is connected with the load through the solar controller, and alternating current is converted into direct current for voltage stabilization through the solar controller by the alternating current power supply end to supply power to the load. The utility model discloses safe and reliable and low temperature resistant long service life.
Description
Technical Field
The utility model belongs to the technical field of the solar panel electricity generation, a electricity generation energy storage system is related to, especially a photovoltaic system with super capacitor energy storage.
Background
At present, with the strong support and popularization of new energy application by governments, solar energy is widely applied as natural resources and green energy. The solar power generation and energy storage system generally adopts a lead-acid storage battery or a lithium ion battery as an energy storage device. However, since the secondary battery is in a charged and non-discharged state at ordinary times, even if the internal electrode plate is deteriorated, the terminal voltage thereof may be in a similar state to that of a good battery, and it is difficult to perform an early judgment and replacement process, and once it is used in a critical time, a failure and damage may occur, especially when the secondary battery has a strict requirement for the environment, and a long-term low-temperature environment may seriously shorten the battery life.
Lithium ion batteries are used more and more as rechargeable batteries with high energy density, long cycle life and high performance, but due to the characteristics of lithium atoms, the danger of explosion of the batteries caused by overcharge or overcurrent discharge exists, and even if a protection circuit exists, certain potential safety hazards exist, and the explosion event cannot be avoided. Therefore, the application of the lithium ion battery in the transformer substation, the switching station and other places with higher safety requirements by the power company is still more cautious.
Therefore, it is an urgent technical problem to be solved by those skilled in the art to develop a photovoltaic system that can be in a high-voltage charged state or in a low-voltage idle state for a long time, has no over-discharge problem, and has long low-temperature resistance and long life.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the not enough of prior art, provide a reasonable in design, safe and reliable and resistant low temperature long service life's photovoltaic system with super capacitor energy storage.
The utility model provides a its realistic problem take following technical scheme to realize:
A photovoltaic system for storing energy by using super capacitors comprises a photovoltaic module, an alternating current power supply, a solar controller, a super capacitor bank and a load; the output end of the photovoltaic module is respectively connected with the super capacitor bank and the load through a solar controller and is used for converting light energy into electric energy and simultaneously charging the load and the super capacitor bank through the solar controller; the output end of the super capacitor bank is connected with a load and used for supplying power to the load; the output end of the alternating current power supply is connected with the load through the solar controller, and alternating current is converted into direct current for voltage stabilization through the solar controller by the alternating current power supply end to supply power to the load.
Also, the solar controller includes: a charging circuit, a discharging circuit, a detection and control circuit and an AC/DC circuit 9; the output end of the photovoltaic module is connected with the super capacitor bank through a charging circuit and used for charging the super capacitor bank; the output end of the super capacitor bank is connected with a load through a discharge circuit and supplies power to the load; the photovoltaic module is also connected with the load through the charging circuit and the discharging circuit in sequence and directly supplies power to the load; the output end of the alternating current power supply is connected with a negative power supply load through an AC/DC circuit and a discharge circuit in sequence and supplies power to the negative power supply load; the input end of the detection and control circuit is connected with the photovoltaic module, and the output end of the detection and control circuit is respectively connected with the charging circuit and the discharging circuit and is used for controlling the photovoltaic module and the super capacitor bank to supply power to the load through the charging circuit and the discharging circuit; the input end of the detection and control circuit is connected with an alternating current power supply, and the output end of the detection and control circuit is connected with the AC/DC circuit and used for controlling the alternating current power supply to supply power to the load through the AC/DC circuit; the input end of the detection and control circuit is also connected with the super capacitor bank, and the output end of the detection and control circuit is connected with the charging circuit and used for detecting the electric quantity of the super capacitor bank and charging the super capacitor bank.
Moreover, the super capacitor group is formed by connecting 10 super capacitor modules in parallel, each super capacitor module is formed by connecting 10 2.7V2.5AH single super capacitors in series, and each super capacitor in series is connected with a voltage balancing circuit.
The utility model has the advantages and beneficial effect:
1. The utility model provides a regard as the electricity generation energy storage system of energy memory alternating current power supply as stand-by power simultaneously with ultracapacitor system group, ultracapacitor system can be in high voltage charged state or low-voltage vacant for a long time, does not have the overdischarge problem, is the device of complete non-maintaining, need not periodic charge and discharge and maintains, has reduced the maintenance cost.
2. The utility model discloses the high low temperature characteristic that utilizes super capacitor is very good, still can normally work at-40 ℃, need not other heat preservation measures and can normally the operating characteristic, and the range of application is wide, has reduced supporting cost.
3. The utility model discloses can collect faint energy as energy storage device with super capacitor, improve the efficiency of system, prolong the power supply time for the load.
4. The utility model discloses a MPPT maximum power point tracking technique utilizes solar cell's efficiency maximize.
Drawings
Fig. 1 is a block diagram of the circuit of the present invention;
Fig. 2 is a circuit block diagram of the solar controller of the present invention;
Description of reference numerals:
1: a photovoltaic module; 2: an alternating current power supply; 3: a solar controller; 4: a supercapacitor bank; 5: a load; 6: a charging circuit; 7: a discharge circuit; 8: a detection and control circuit; 9: AC/DC circuit
Detailed Description
The embodiments of the present invention will be described in detail with reference to the accompanying drawings:
The utility model provides an use solar panel electricity generation, ultracapacitor system group is as the electricity generation energy storage system of energy memory alternating current power supply as stand-by power simultaneously, as shown in figure 1, figure 2, include: the solar photovoltaic module comprises a photovoltaic module 1, an alternating current power supply 2, a solar controller 3, a super capacitor bank 4 and a load 5; the output end of the photovoltaic module 1 is respectively connected with the super capacitor bank 4 and the load 5 through the solar controller 3, when the sun shines, the photovoltaic module 1 converts light energy into electric energy to simultaneously charge the load 5 and the super capacitor bank 4 through the solar controller 3; the output end of the super capacitor bank 4 is connected with a load 5, and when no sunlight shines, the super capacitor bank 4 supplies power to the load 5; the output end of the alternating current power supply 2 is connected with the load 5 through the solar controller 3, and when the electric quantity of the super capacitor bank 4 is insufficient under special conditions, the alternating current power supply 2 end gets electricity, and the alternating current is converted into direct current to be stabilized and then supplies power to the load 5 through the solar controller 3.
the solar controller 3 is a control circuit with a single chip microcomputer PIC16C58 as a core, and comprises: a charging circuit 6, a discharging circuit 7, a detection and control circuit 8, an AC/DC circuit 9; the output end of the photovoltaic module is connected with the super capacitor bank through a charging circuit and used for charging the super capacitor bank; the output end of the super capacitor bank is connected with a load through a discharge circuit and supplies power to the load; the photovoltaic module is also connected with the load through the charging circuit and the discharging circuit in sequence and directly supplies power to the load; the output end of the alternating current power supply is connected with a negative power supply load through an AC/DC circuit and a discharge circuit in sequence and supplies power to the negative power supply load; the input end of the detection and control circuit is connected with the photovoltaic module, and the output end of the detection and control circuit is respectively connected with the charging circuit and the discharging circuit and is used for controlling the photovoltaic module and the super capacitor bank to supply power to the load through the charging and discharging circuit; the input end of the detection and control circuit is connected with an alternating current power supply, and the output end of the detection and control circuit is connected with the AC/DC circuit and used for controlling the alternating current power supply to supply power to the load through the AC/DC circuit; the input end of the detection and control circuit is also connected with the super capacitor bank, and the output end of the detection and control circuit is connected with the charging circuit and used for detecting the electric quantity of the super capacitor bank and charging the super capacitor bank.
In this embodiment, the solar controller 3 takes the detection and control circuit 8 as a core, the charging circuit 6 stores the electric quantity collected from the photovoltaic module 1 into the super capacitor bank 4, and the discharging circuit 7 delivers the super capacitor bank 4 or the electric quantity collected from the photovoltaic module 1 via the charging circuit 4 to the load 5 according to different instructions of the detection and control circuit 8. When the super capacitor bank 4 is short of electricity, the detection and control circuit 8 converts the alternating current power supply 2 as a standby power supply through an AC/DC circuit, and then supplies power to the load 5 through the discharge circuit 7.
In this embodiment, the supercapacitor group 4 is formed by connecting 10 supercapacitor modules in parallel, each supercapacitor module is formed by connecting 10 2.7V2.5AH single supercapacitors in series, and a voltage balancing circuit is applied to each series-connected supercapacitor, so that the voltage consistency of each single capacitor after the series-connected supercapacitors are charged and discharged for many times is ensured.
In this embodiment, the charging circuit 6 converts the collected solar energy into electric energy as much as possible by using a control strategy of maximum power point tracking MPPT, and stores the electric energy into the energy storage device supercapacitor bank. The controller changes the output voltage or current of the photovoltaic cell with smaller steps in each control period, and the changing direction can be increased or decreased; comparing the output power of the photovoltaic cells before and after comparison, and if the output power is increased, continuing the interference process according to the direction of the previous period; if the output power is reduced, the interference direction is changed, and finally the reciprocating stability is achieved at a high-power point. The utility model discloses a MPPT maximum power point tracking technique utilizes solar cell's efficiency maximize.
The utility model discloses a theory of operation is:
When the sun shines, the photovoltaic module converts light energy into electric energy and simultaneously charges the load and the super capacitor bank through the solar controller; when no sunlight is irradiated, the super capacitor bank supplies power to the load, and when the super capacitor bank is insufficient in electric quantity under special conditions, the alternating current power supply end supplies power to the load after the alternating current is converted into direct current for voltage stabilization through the solar controller.
the utility model discloses the control process that the detection that relates in and control circuit realized adopts conventional technique can realize, not the utility model discloses an innovation content.
It should be emphasized that the embodiments of the present invention are illustrative and not restrictive, and thus the present invention includes but is not limited to the embodiments described in the detailed description, and all other embodiments that can be derived from the technical solutions of the present invention by those skilled in the art also belong to the scope of the present invention.
Claims (3)
1. The utility model provides a photovoltaic system with super capacitor energy storage which characterized in that: the solar photovoltaic power generation system comprises a photovoltaic module, an alternating current power supply, a solar controller, a super capacitor bank and a load; the output end of the photovoltaic module is respectively connected with the super capacitor bank and the load through a solar controller and is used for converting light energy into electric energy and simultaneously charging the load and the super capacitor bank through the solar controller; the output end of the super capacitor bank is connected with a load and used for supplying power to the load; the output end of the alternating current power supply is connected with the load through the solar controller, and alternating current is converted into direct current for voltage stabilization through the solar controller by the alternating current power supply end to supply power to the load.
2. the supercapacitor energy storage photovoltaic system according to claim 1, wherein: the solar controller includes: a charging circuit, a discharging circuit, a detection and control circuit and an AC/DC circuit (9); the output end of the photovoltaic module is connected with the super capacitor bank through a charging circuit and used for charging the super capacitor bank; the output end of the super capacitor bank is connected with a load through a discharge circuit and supplies power to the load; the photovoltaic module is also connected with the load through the charging circuit and the discharging circuit in sequence and directly supplies power to the load; the output end of the alternating current power supply is connected with a negative power supply load through an AC/DC circuit and a discharge circuit in sequence and supplies power to the negative power supply load; the input end of the detection and control circuit is connected with the photovoltaic module, and the output end of the detection and control circuit is respectively connected with the charging circuit and the discharging circuit and is used for controlling the photovoltaic module and the super capacitor bank to supply power to the load through the charging circuit and the discharging circuit; the input end of the detection and control circuit is connected with an alternating current power supply, and the output end of the detection and control circuit is connected with the AC/DC circuit and used for controlling the alternating current power supply to supply power to the load through the AC/DC circuit; the input end of the detection and control circuit is also connected with the super capacitor bank, and the output end of the detection and control circuit is connected with the charging circuit and used for detecting the electric quantity of the super capacitor bank and charging the super capacitor bank.
3. The supercapacitor energy storage photovoltaic system according to claim 1, wherein: the super capacitor bank is formed by connecting 10 super capacitor modules in parallel, each super capacitor module is formed by connecting 10 2.7V2.5AH single super capacitors in series, and each super capacitor in series is connected with a voltage balancing circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920809859.5U CN209767221U (en) | 2019-05-30 | 2019-05-30 | photovoltaic system with super capacitor energy storage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920809859.5U CN209767221U (en) | 2019-05-30 | 2019-05-30 | photovoltaic system with super capacitor energy storage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209767221U true CN209767221U (en) | 2019-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920809859.5U Active CN209767221U (en) | 2019-05-30 | 2019-05-30 | photovoltaic system with super capacitor energy storage |
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| Country | Link |
|---|---|
| CN (1) | CN209767221U (en) |
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2019
- 2019-05-30 CN CN201920809859.5U patent/CN209767221U/en active Active
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Address after: 300409 No. 8 Liaohe North Road, Beichen science and Technology Park, Beichen District, Tianjin Patentee after: Tianjin Sanyuan Power Intelligent Technology Co.,Ltd. Address before: 300409 No. 8 Liaohe North Road, Beichen science and Technology Park, Beichen District, Tianjin Patentee before: TIANJIN SANYUAN POWER EQUIPMENT MANUFACTURING Co.,Ltd. |