CN203225683U - Combined type energy storage photovoltaic power generation system - Google Patents
Combined type energy storage photovoltaic power generation system Download PDFInfo
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- CN203225683U CN203225683U CN2013201895109U CN201320189510U CN203225683U CN 203225683 U CN203225683 U CN 203225683U CN 2013201895109 U CN2013201895109 U CN 2013201895109U CN 201320189510 U CN201320189510 U CN 201320189510U CN 203225683 U CN203225683 U CN 203225683U
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- energy storage
- chopper
- power generation
- combined type
- generation system
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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
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The utility model discloses a combined type energy storage photovoltaic power generation system, comprising a photovoltaic cell panel, a DC/AC (Direct Current/Alternating Current) converter, a first direct current chopper, a second direct current chopper, an electrolytic hydrogen device, a hydrogen gas tank, a fuel cell and a storage cell; wherein the photovoltaic cell panel is respectively electrically connected with the first direct current chopper, the storage cell and the DC/AC converter, the first direct current chopper is electrically connected with the electrolytic hydrogen device, a gas output end of the electrolytic hydrogen device is connected with a gas input end of the hydrogen gas tank. According to the combined type energy storage photovoltaic power generation system of the utility model, the storage cell in the system is used for short-term energy storage, and the hydrogen gas is used for long-term energy storage, in this way, the combined type energy storage photovoltaic power generation system not only has the advantage of being suitable for short-term energy storage, but also has the advantage of being suitable for long-term energy storage duo to large energy density of water-electrolytic hydrogen production; in addition, the combined type energy storage photovoltaic power generation system is small in volume and high in efficiency, and reduces the system cost, thus the combined type energy storage photovoltaic power generation system is worthy of popularization and use.
Description
Technical field
The utility model relates to a kind of photovoltaic generating system, relates in particular to a kind of composite type accumulation of energy photovoltaic generating system.
Background technology
Conventionally adopt storage battery as energy storage equipment from net type photovoltaic generating system, when photovoltaic battery panel output energy during greater than workload demand, charge in batteries, excess energy is stored in the storage battery; Otherwise photovoltaic battery panel output energy can not satisfy load and take, and battery discharging is underload to replenish.This system has 2 energy-transmission channel A and B that the photovoltaic electric energy is supplied to the user: passage A(photovoltaic battery panel → user) the photovoltaic electric energy is supplied to the user by direct transmission channel; Channel B (photovoltaic battery panel → storage battery → user) is supplied to the user with electric energy after the storage battery buffering.Because solar radiation constantly changed with place and time, and customer charge also is constantly to change, this just causes solar radiation and the supply and demand mismatch between the two of loading, therefore conventional photovoltaic generating system need very big battery capacity (particularly outstanding with the place performance of the serious mismatch of load in solar radiation) could the autonomous operation of realization system (namely only rely on photovoltaic electric power and do not replenish other electric power).Yet the battery capacity conference causes the whole system volume excessive, and preponderance, cost are crossed high problems, and characteristics such as the energy density of storage battery own is little, self discharge make it be not suitable for long-term energy storage.If take internal combustion engine to replenish the form of generating, though the system that can realize powers continuously, but can cause environmental pollution, can't reach the purpose of environmental protection.
Hydrogen energy-storage type photovoltaic generating system can be realized system's autonomous operation continuously.This system has only 1 energy-transmission channel C(photovoltaic battery panel → electrolysis hydrogen device → hydrogen gas tank → fuel cell → user).Owing to hydrogen energy density height, be easy to longer-term storage and do not have leakage, thereby this system can provide enough accumulation of energy buffer capacity to eliminate the influence of supply and demand mismatch.But because water electrolysis hydrogen production device and fuel cell efficiency is lower, unit cost is higher, thereby cause that entire system efficient is on the low side, cost is higher.
The utility model content
The purpose of this utility model with regard to be to provide in order to address the above problem a kind of simple in structure, efficient is high, free of contamination composite type accumulation of energy photovoltaic generating system.
In order to achieve the above object, the utility model has adopted following technical scheme:
A kind of composite type accumulation of energy photovoltaic generating system, comprise photovoltaic battery panel, the DC/AC current transformer, first DC chopper, second DC chopper, the electrolysis hydrogen device, hydrogen gas tank, fuel cell and storage battery, described photovoltaic battery panel respectively with described first DC chopper, described storage battery and described DC/AC current transformer electrically connect, described first DC chopper and described electrolysis hydrogen device electrically connect, the gas output end of described electrolysis hydrogen device is connected with the gas input of described hydrogen gas tank, the gas output end of described hydrogen gas tank is connected with the gas input of described fuel cell, described fuel cell and described second DC chopper electrically connect, and described second DC chopper electrically connects with described storage battery and described DC/AC current transformer respectively.
The beneficial effects of the utility model are:
The utility model composite type accumulation of energy photovoltaic generating system, storage battery is used for the short-term energy storage in the system, hydrogen is used for long-term energy storage, this combined energy-accumulation mode has been given full play to the advantage of rapid, the suitable short-term accumulation of energy of storage battery dynamic response and the advantage of big, the suitable long-term energy storage of water electrolysis hydrogen production energy density on the one hand, on the other hand owing to the energy snubber device of storage battery as short-term, can effectively reduce system to the requirement of electrolysis hydrogen device and fuel cell capacity through optimal design, volume is small and exquisite, efficient is high, and reduces system cost.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1, the utility model composite type accumulation of energy photovoltaic generating system, comprise photovoltaic battery panel, the DC/AC current transformer, first DC chopper, second DC chopper, the electrolysis hydrogen device, hydrogen gas tank, fuel cell and storage battery, described photovoltaic battery panel respectively with described first DC chopper, described storage battery and described DC/AC current transformer electrically connect, described first DC chopper and described electrolysis hydrogen device electrically connect, the gas output end of described electrolysis hydrogen device is connected with the gas input of described hydrogen gas tank, the gas output end of described hydrogen gas tank is connected with the gas input of described fuel cell, described fuel cell and described second DC chopper electrically connect, and described second DC chopper electrically connects with described storage battery and described DC/AC current transformer respectively.
Use the operation principle of a kind of composite type accumulation of energy of the utility model photovoltaic generating system as follows:
Through solar radiation, a plurality of photovoltaic battery panels produce electric energy, electric energy is sent to user or electrical network behind the DC/AC current transformer, when electric energy is not used, an electric energy part is stored into storage battery, another part is sent to first DC chopper, after the pressure regulation effect of first DC chopper, be sent to the electrolysis hydrogen device, the electrolysis hydrogen device by the electric energy energy supply after electrolysis produce hydrogen, hydrogen is stored in the storage tank the inside, the hydrogen of storage tank the inside can externally use, and also can be transferred to supply fuel cell power generation in the fuel cell, and the electric energy that produces behind fuel cell is through the second DC chopper pressure regulation, the electric energy part of this part is replenished the electric energy of storage battery, a part directly is connected with the DC/AC current transformer, and storage battery is sent to the DC/AC current transformer with electric energy, and the DC/AC current transformer offers the user with electric energy.
Claims (1)
1. composite type accumulation of energy photovoltaic generating system, comprise photovoltaic battery panel, the DC/AC current transformer, it is characterized in that: also comprise first DC chopper, second DC chopper, the electrolysis hydrogen device, hydrogen gas tank, fuel cell and storage battery, described photovoltaic battery panel respectively with described first DC chopper, described storage battery and described DC/AC current transformer electrically connect, described first DC chopper and described electrolysis hydrogen device electrically connect, the gas output end of described electrolysis hydrogen device is connected with the gas input of described hydrogen gas tank, the gas output end of described hydrogen gas tank is connected with the gas input of described fuel cell, described fuel cell and described second DC chopper electrically connect, and described second DC chopper electrically connects with described storage battery and described DC/AC current transformer respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201895109U CN203225683U (en) | 2013-04-16 | 2013-04-16 | Combined type energy storage photovoltaic power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201895109U CN203225683U (en) | 2013-04-16 | 2013-04-16 | Combined type energy storage photovoltaic power generation system |
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| Publication Number | Publication Date |
|---|---|
| CN203225683U true CN203225683U (en) | 2013-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013201895109U Expired - Fee Related CN203225683U (en) | 2013-04-16 | 2013-04-16 | Combined type energy storage photovoltaic power generation system |
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| CN (1) | CN203225683U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109473704A (en) * | 2017-09-08 | 2019-03-15 | 徐煜 | Fuel cell system |
-
2013
- 2013-04-16 CN CN2013201895109U patent/CN203225683U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109473704A (en) * | 2017-09-08 | 2019-03-15 | 徐煜 | Fuel cell system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131002 Termination date: 20140416 |