CN103825042B - For the flow battery system from net type solar power system - Google Patents
For the flow battery system from net type solar power system Download PDFInfo
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- CN103825042B CN103825042B CN201410093805.5A CN201410093805A CN103825042B CN 103825042 B CN103825042 B CN 103825042B CN 201410093805 A CN201410093805 A CN 201410093805A CN 103825042 B CN103825042 B CN 103825042B
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- electric pile
- pile unit
- fluid reservoir
- flow battery
- pole fluid
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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
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/18—Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells
- H01M8/184—Regeneration by electrochemical means
- H01M8/188—Regeneration by electrochemical means by recharging of redox couples containing fluids; Redox flow type batteries
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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
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04276—Arrangements for managing the electrolyte stream, e.g. heat exchange
- H01M8/04283—Supply means of electrolyte to or in matrix-fuel cells
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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
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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
-
- 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
-
- 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
Abstract
The invention discloses a kind of for the flow battery system from net type solar power system, comprising: the first electric pile unit be connected with solar charging/discharging controller with photovoltaic arrays; To be connected with solar charging/discharging controller with DC load and to be connected the second electric pile unit of AC load by inverter; Positive pole fluid reservoir; Negative pole fluid reservoir; The anode electrolyte outlet of the first electric pile unit, the anode electrolyte outlet of the second electric pile unit are connected with described positive pole fluid reservoir; The electrolyte liquid outlet of the first electric pile unit, the electrolyte liquid outlet of the second electric pile unit are connected with described negative pole fluid reservoir; Described positive pole fluid reservoir is connected with the anode electrolyte entrance of the first electric pile unit, the anode electrolyte entrance of the second electric pile unit; Described negative pole fluid reservoir is connected with the electrolyte liquid entrance of the first electric pile unit, the electrolyte liquid entrance of the second electric pile unit; Present invention reduces the power consumption of flow battery system discharge process.
Description
Technical field
The present invention relates to a kind of flow battery system, be specially a kind of for the flow battery system from net type solar power system.
Background technology
Be widely used in the application places such as remote mountain area, non-Electric region, island, communication base station from net type solar power system, it generally comprises the photovoltaic arrays, solar charging/discharging controller, batteries, inverter, DC load and the AC load that are made up of solar module; Solar energy is converted to electric energy when there being illumination by photovoltaic arrays, controls photovoltaic arrays power and the charging of accumulators group to DC load by solar charging/discharging controller; When unglazed photograph, control batteries power to DC load by solar charging/discharging controller, the DC power conversion that inverter realizes photovoltaic arrays or batteries to export is alternating current, powers to AC load.
The load operation pattern of some loads as communication base station etc. is run continuously for 24 hours, generally directly supplied by civil power in city, remote without civil power area, said as foregoing, supply of electric power is provided by from net type solar power system, for the load of this 24 hours continuous operating loads such as communication base station, design from net type solar power system is generally that power output is greater than bearing power, the power output of usual photovoltaic arrays is 6 ~ 10 times of bearing power, to be full of batteries fast in the power output finite time that illumination is good by day that utility is unnecessary, therefore the charge power of batteries power output that is general and photovoltaic arrays matches, and discharge power is basic consistent with bearing power, therefore the batteries adopted in net type solar power system is in high-power charging, the operational mode of small-power electric discharge.
Due to flow battery, to have charge-discharge performance good, capacity is large, life-span is long, fail safe advantages of higher, it day by day substitutes conventional storage battery and uses in solar photovoltaic generation system, when flow battery being applied to from net type solar power system, for meeting the charge power of photovoltaic arrays, flow battery system power is generally close to the rated power of photovoltaic arrays, flow battery system comprises pile, electrolyte storage tank, with other auxiliary devices if circulating pump and liquid transmission pipeline are all be configured according to the size of charge power, like this under discharge mode, because bearing power is relatively low, therefore flow battery system internal power consumption is very big, efficiency is very low, the operational effect of whole flow battery system is bad.
Summary of the invention
The present invention is directed to the proposition of above problem, and develop a kind of for the flow battery system from net type solar power system.
Technological means of the present invention is as follows:
For the flow battery system from net type solar power system, describedly comprise photovoltaic arrays, solar charging/discharging controller, inverter, DC load and AC load from net type solar power system,
Described flow battery system comprises:
The first electric pile unit be connected with solar charging/discharging controller with photovoltaic arrays;
To be connected with solar charging/discharging controller with DC load and to be connected the second electric pile unit of AC load by inverter;
Positive pole fluid reservoir;
Negative pole fluid reservoir;
The anode electrolyte outlet of the first electric pile unit, the anode electrolyte outlet of the second electric pile unit are connected with described positive pole fluid reservoir respectively by liquid transmission pipeline; The electrolyte liquid outlet of the first electric pile unit, the electrolyte liquid outlet of the second electric pile unit are connected with described negative pole fluid reservoir respectively by liquid transmission pipeline; Described positive pole fluid reservoir is connected with the anode electrolyte entrance of the first electric pile unit, the anode electrolyte entrance of the second electric pile unit by liquid transmission pipeline through circulating pump respectively; Described negative pole fluid reservoir is connected with the electrolyte liquid entrance of the first electric pile unit, the electrolyte liquid entrance of the second electric pile unit by liquid transmission pipeline through circulating pump respectively;
Further, described first electric pile unit power is the certain multiple of described second electric pile unit power;
Further, photovoltaic arrays, under the control of solar charging/discharging controller, is exported electric energy and is converted to chemical energy and is stored to the anode electrolyte in positive pole fluid reservoir and the electrolyte liquid in negative pole fluid reservoir by described first electric pile unit; Chemical energy stored by electrolyte liquid in anode electrolyte in positive pole fluid reservoir and negative pole fluid reservoir, under the control of solar charging/discharging controller, is converted to electric energy and exports to DC load or export to AC load by inverter by described second electric pile unit;
Further, described first electric pile unit and the second electric pile unit all at least comprise a pile;
Further, described certain multiple is 4 ~ 20 times;
Further, described flow battery system is all-vanadium redox flow battery system.
Owing to have employed technique scheme, provided by the invention for the flow battery system from net type solar power system, the first electric pile unit and the second electric pile unit is adopted to share a set of positive pole fluid reservoir and negative pole fluid reservoir, not only cost-saving, and the first electric pile unit is used for charging, photovoltaic arrays is exported electric energy and be converted to chemical energy and be stored to the anode electrolyte in positive pole fluid reservoir and the electrolyte liquid in negative pole fluid reservoir, described second electric pile unit is used for electric discharge, the chemical energy stored by the electrolyte liquid in the anode electrolyte in positive pole fluid reservoir and negative pole fluid reservoir is converted to electric energy and exports to DC load or export to AC load by inverter, further, first electric pile unit power is the certain multiple of described second electric pile unit power, when making illumination strong, photovoltaic arrays can be full of flow battery as soon as possible, ensure that the electrolyte in positive pole fluid reservoir and negative pole fluid reservoir is in high-capacity state, illumination weak or unglazed according to time and the second electric pile unit of matching of bearing power carry out small-power electric discharge, reduce the power consumption of flow battery system discharge process, improve the operational efficiency for the flow battery system from net type solar power system, the present invention is under same light laid shoot part, power-on time extends, additional income, reduce energy storage cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure: 1, photovoltaic arrays, 2, solar charging/discharging controller, 3, flow battery system, 4, inverter, 5, AC load, 6, DC load, 31, first electric pile unit, 32, positive pole fluid reservoir, 33, second electric pile unit, 34, negative pole fluid reservoir, 35, circulating pump, 311, the anode electrolyte outlet of the first electric pile unit, 312, the anode electrolyte entrance of the first electric pile unit, 313, the electrolyte liquid outlet of the first electric pile unit, 314, the electrolyte liquid entrance of the first electric pile unit, 331, the anode electrolyte outlet of the second electric pile unit, 332, the anode electrolyte entrance of the second electric pile unit, 333, the electrolyte liquid outlet of the second electric pile unit, 334, the electrolyte liquid entrance of the second electric pile unit.
Embodiment
As shown in Figure 1 a kind of for the flow battery system from net type solar power system, describedly comprise photovoltaic arrays 1, solar charging/discharging controller 2, inverter 4, DC load 6 and AC load 5 from net type solar power system, described flow battery system 3 comprises: the first electric pile unit 31 be connected with solar charging/discharging controller 2 with photovoltaic arrays 1; To be connected with solar charging/discharging controller 2 with DC load 6 and to be connected the second electric pile unit 33 of AC load 5 by inverter 4; Positive pole fluid reservoir 32; Negative pole fluid reservoir 34; The anode electrolyte outlet 331 of anode electrolyte outlet 311, second electric pile unit of the first electric pile unit is connected with described positive pole fluid reservoir 32 respectively by liquid transmission pipeline; The electrolyte liquid outlet 333 of electrolyte liquid outlet 313, second electric pile unit of the first electric pile unit is connected with described negative pole fluid reservoir 34 respectively by liquid transmission pipeline; Described positive pole fluid reservoir 32 is connected by the anode electrolyte entrance 332 of liquid transmission pipeline with anode electrolyte entrance 312, second electric pile unit of the first electric pile unit through circulating pump 35 respectively; Described negative pole fluid reservoir 34 is connected by the electrolyte liquid entrance 334 of liquid transmission pipeline with electrolyte liquid entrance 314, second electric pile unit of the first electric pile unit through circulating pump 35 respectively; Further, described first electric pile unit 31 power is the certain multiple of described second electric pile unit 33 power; Further, photovoltaic arrays 1, under the control of solar charging/discharging controller 2, is exported electric energy and is converted to chemical energy and is stored to the anode electrolyte in positive pole fluid reservoir 32 and the electrolyte liquid in negative pole fluid reservoir 34 by described first electric pile unit 31; Chemical energy stored by electrolyte liquid in anode electrolyte in positive pole fluid reservoir 32 and negative pole fluid reservoir 34, under the control of solar charging/discharging controller 2, is converted to electric energy and exports to DC load 6 or export to AC load 5 by inverter 4 by described second electric pile unit 33; Described first electric pile unit 31 and the second electric pile unit 33 all at least comprise a pile; Further, described certain multiple is 4 ~ 20 times; Described flow battery system is all-vanadium redox flow battery system; Described AC load 5 can be communication base station, and now described certain multiple is 6 ~ 10 times; Described first electric pile unit and the second electric pile unit all at least comprise a pile; When the first electric pile unit and the second electric pile unit comprise a pile respectively, the anode electrolyte outlet of the first electric pile unit and entrance and the outlet of electrolyte liquid and entrance be then that the anode electrolyte of this pile exports and entrance and electrolyte liquid export and entrance; When the first electric pile unit and the second electric pile unit comprise multiple pile respectively, multiple pile forms the first electric pile unit and the second electric pile unit by series-parallel mode, the anode electrolyte outlet of each pile and entrance and the outlet of electrolyte liquid and entrance are connected to shared liquid transmission pipeline respectively by branch line, and this shared liquid transmission pipeline is connected with negative pole fluid reservoir with positive pole fluid reservoir.
The present invention adopts the first electric pile unit and the second electric pile unit to share a set of positive pole fluid reservoir and negative pole fluid reservoir, not only cost-saving, and the first electric pile unit is used for charging, photovoltaic arrays is exported electric energy and be converted to chemical energy and be stored to the anode electrolyte in positive pole fluid reservoir and the electrolyte liquid in negative pole fluid reservoir, described second electric pile unit is used for electric discharge, the chemical energy stored by the electrolyte liquid in the anode electrolyte in positive pole fluid reservoir and negative pole fluid reservoir is converted to electric energy and exports to DC load or export to AC load by inverter, further, first electric pile unit power is the certain multiple of described second electric pile unit power, preferably, this certain multiple is 4 ~ 20 times, when making illumination strong, photovoltaic arrays can be full of flow battery as soon as possible, ensure that the electrolyte in positive pole fluid reservoir and negative pole fluid reservoir is in high-capacity state, illumination weak or unglazed according to time and the second electric pile unit of matching of bearing power carry out small-power electric discharge, reduce the power consumption of flow battery system discharge process, improve the operational efficiency for the flow battery system from net type solar power system, the present invention can guarantee that the first electric pile unit and the second electric pile unit work under being all in rated power, extend the useful life of flow battery system, under same light laid shoot part, power-on time extends, additional income, reduce energy storage cost.
It is 500W that table 1 shows bearing power, the power output of photovoltaic arrays is 8kW, charge power i.e. the first electric pile unit power is 8kW, discharge power i.e. the second electric pile unit power is the flow battery system of the present invention of 500W, be 500W with bearing power, the power output of photovoltaic arrays is 8kW, charge-discharge electric power is the different operational efficiency data of the normal flow battery system of 8kW, it is 1kW that table 2 shows bearing power, the power output of photovoltaic arrays is 20kW, charge power i.e. the first electric pile unit power is 20kW, discharge power i.e. the second electric pile unit is the flow battery system of the present invention of 1kW, be 1kW with bearing power, the power output of photovoltaic arrays is 20kW, charge-discharge electric power is the different operational efficiency data of the normal flow battery system of 20kW, described normal flow battery system is only containing an electric pile unit, both for charging simultaneously also for electric discharge.
Table 1. bearing power is 500W, the power output of photovoltaic arrays be 8kW, charge power i.e. the first electric pile unit power be 8kW, discharge power i.e. the second electric pile unit power is the flow battery system of the present invention of 500W, is 500W, the power output of photovoltaic arrays is 8kW, different operational efficiency data that charge-discharge electric power is the normal flow battery system of 8kW from bearing power.
Table 2. bearing power is 1kW, the flow battery system of the present invention of the power output of photovoltaic arrays be 20kW, charge power i.e. the first electric pile unit power to be 20kW, discharge power i.e. the second electric pile unit be 1kW, is 1kW, the power output of photovoltaic arrays is 20kW, different operational efficiency data that charge-discharge electric power is the normal flow battery system of 20kW from bearing power.
Table 3. bearing power is 1.25kW, the flow battery system of the present invention of the power output of photovoltaic arrays be 5kW, charge power i.e. the first electric pile unit power to be 5kW, discharge power i.e. the second electric pile unit be 1.25kW, is 1.25kW, the power output of photovoltaic arrays is 5kW, different operational efficiency data that charge-discharge electric power is the normal flow battery system of 5kW from bearing power.
Table 4. bearing power is 1kW, the flow battery system of the present invention of the power output of photovoltaic arrays be 10kW, charge power i.e. the first electric pile unit power to be 10kW, discharge power i.e. the second electric pile unit be 1kW, is 1kW, the power output of photovoltaic arrays is 10kW, different operational efficiency data that charge-discharge electric power is the normal flow battery system of 10kW from bearing power.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (4)
1. one kind for the flow battery system from net type solar power system, describedly comprise photovoltaic arrays (1), solar charging/discharging controller (2), inverter (4), DC load (6) and AC load (5) from net type solar power system
It is characterized in that described flow battery system (3) comprising:
The first electric pile unit (31) be connected with solar charging/discharging controller (2) with photovoltaic arrays (1);
To be connected with solar charging/discharging controller (2) with DC load (6) and to be connected second electric pile unit (33) of AC load (5) by inverter (4);
Positive pole fluid reservoir (32);
Negative pole fluid reservoir (34);
Anode electrolyte outlet (311) of the first electric pile unit, anode electrolyte outlet (331) of the second electric pile unit are connected with described positive pole fluid reservoir (32) respectively by liquid transmission pipeline; Electrolyte liquid outlet (313) of the first electric pile unit, electrolyte liquid outlet (333) of the second electric pile unit are connected with described negative pole fluid reservoir (34) respectively by liquid transmission pipeline; Described positive pole fluid reservoir (32) is connected with the anode electrolyte entrance (312) of the first electric pile unit, the anode electrolyte entrance (332) of the second electric pile unit by liquid transmission pipeline through circulating pump (35) respectively; Described negative pole fluid reservoir (34) is connected with the electrolyte liquid entrance (314) of the first electric pile unit, the electrolyte liquid entrance (334) of the second electric pile unit by liquid transmission pipeline through circulating pump (35) respectively;
Described first electric pile unit (31) power is 4 ~ 20 times of described second electric pile unit (33) power.
2. according to claim 1 a kind of for the flow battery system from net type solar power system, it is characterized in that described first electric pile unit (31) is under the control of solar charging/discharging controller (2), photovoltaic arrays (1) output electric energy is converted to chemical energy and is stored to the anode electrolyte in positive pole fluid reservoir (32) and the electrolyte liquid in negative pole fluid reservoir (34); Chemical energy stored by electrolyte liquid in anode electrolyte in positive pole fluid reservoir (32) and negative pole fluid reservoir (34), under the control of solar charging/discharging controller (2), is converted to electric energy and exports to DC load (6) or export to AC load (5) by inverter (4) by described second electric pile unit (33).
3. according to claim 1 a kind of for the flow battery system from net type solar power system, it is characterized in that described first electric pile unit (31) and the second electric pile unit (33) all at least comprise a pile.
4. a kind of for the flow battery system from net type solar power system according to any one of claims 1 to 3, is characterized in that described flow battery system is all-vanadium redox flow battery system.
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| CN201410093805.5A CN103825042B (en) | 2014-03-13 | 2014-03-13 | For the flow battery system from net type solar power system |
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| CN201410093805.5A CN103825042B (en) | 2014-03-13 | 2014-03-13 | For the flow battery system from net type solar power system |
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| CN103825042A CN103825042A (en) | 2014-05-28 |
| CN103825042B true CN103825042B (en) | 2016-01-13 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882622B (en) * | 2015-05-05 | 2018-03-23 | 中国东方电气集团有限公司 | The control method and device of redox flow battery energy storage system |
| CN108615961B (en) * | 2018-05-11 | 2020-02-07 | 西安交通大学 | Echelon complementary electricity-heat balance electricity storage charging system and method |
| CN113611903A (en) * | 2021-07-12 | 2021-11-05 | 苏州创智云联智能科技有限公司 | Integrated solar flow battery system, control method, equipment and terminal |
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