CN118352563A - Flow battery liquid storage tank temperature control system based on phase change heat storage - Google Patents
Flow battery liquid storage tank temperature control system based on phase change heat storage Download PDFInfo
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- CN118352563A CN118352563A CN202410597152.8A CN202410597152A CN118352563A CN 118352563 A CN118352563 A CN 118352563A CN 202410597152 A CN202410597152 A CN 202410597152A CN 118352563 A CN118352563 A CN 118352563A
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- 239000007788 liquid Substances 0.000 title claims abstract description 148
- 238000005338 heat storage Methods 0.000 title claims abstract description 19
- 239000012782 phase change material Substances 0.000 claims abstract description 28
- 239000008151 electrolyte solution Substances 0.000 claims abstract description 15
- 239000003792 electrolyte Substances 0.000 claims description 45
- 239000012071 phase Substances 0.000 claims description 18
- 239000002440 industrial waste Substances 0.000 claims description 14
- 239000000498 cooling water Substances 0.000 claims description 11
- 239000002912 waste gas Substances 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 239000013013 elastic material Substances 0.000 claims description 3
- 239000007791 liquid phase Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 2
- 239000008236 heating water Substances 0.000 claims 1
- 230000001276 controlling effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000004134 energy conservation Methods 0.000 description 4
- 238000006722 reduction reaction Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 239000013543 active substance Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012983 electrochemical energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
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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
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04067—Heat exchange or temperature measuring elements, thermal insulation, e.g. heat pipes, heat pumps, fins
- H01M8/04074—Heat exchange unit structures specially adapted for fuel cell
-
- 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
-
- 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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- 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
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a liquid flow battery liquid storage tank temperature control system based on phase change heat storage, which comprises a cold source/heat source module, a liquid storage tank and a liquid flow battery module, wherein the cold source/heat source module provides a temperature-controlled working medium for the system, the working medium flows into a heat exchange tube at the outer layer of the liquid storage tank, and the phase change material at the outer layer of the liquid storage tank is heated or cooled to realize the temperature control of an electrolyte solution in the liquid storage tank, so that the anode electrolyte solution and the cathode electrolyte solution of the liquid flow battery are maintained at the optimal working temperature, and the working efficiency of the liquid flow battery is improved.
Description
Technical Field
The invention belongs to the technical field of flow batteries, and particularly relates to a flow battery liquid storage tank temperature control system based on phase change heat storage.
Background
The flow battery is a novel electrochemical energy storage technology and mainly comprises a point pile unit, electrolyte, an electrolyte storage and supply unit and a control unit. The mutual conversion of electric energy and chemical energy is realized through the reversible oxidation-reduction reaction of electrolyte solution active substances of the anode and the cathode.
Because the flow battery has higher temperature requirements on electrolyte, in the prior art, no high-efficiency temperature control device for the electrolyte exists, and the device realizes accurate temperature control for the electrolyte of the flow battery by utilizing the special property of the phase change material.
The above information disclosed in the background section is only for enhancement of understanding of the background of the invention and therefore may contain information that does not form the prior art that is already known to a person of ordinary skill in the art.
Disclosure of Invention
The invention aims to solve the technical problems of providing a liquid storage tank temperature control system of a liquid flow battery based on phase change heat storage aiming at the defects in the prior art, which is used for solving the technical problem of accurate temperature control of the liquid flow battery, realizing temperature control of an electrolyte solution in the liquid flow battery and improving the efficiency of the liquid flow battery.
The invention adopts the following technical scheme:
the liquid flow battery liquid storage tank temperature control system based on phase change heat storage comprises a cold source/heat source module, wherein the output end of the cold source/heat source module is sequentially connected with a controller, a liquid storage tank and a liquid flow battery module; the phase change material in the liquid storage tank controls the temperature of electrolyte solution in the liquid storage tank through solid-liquid phase change along with endothermic and exothermic reactions, and when the external temperature is higher than the optimal temperature of electrolyte of the flow battery module, the cold source/heat source module conveys cooling water to control the temperature of the electrolyte solution in the liquid storage tank; when the external temperature is lower than the optimal temperature of the electrolyte of the flow battery module, the cold source/heat source module conveys hot water or industrial waste heat and waste gas to control the temperature of the electrolyte solution in the liquid storage tank.
Specifically, the liquid storage tank comprises a positive liquid storage tank and a negative liquid storage tank, one ends of the positive liquid storage tank and the negative liquid storage tank are connected with the controller through a first three-way valve, the other ends of the positive liquid storage tank are divided into two paths, one path is connected with the flow battery module, and the other path is connected with the flow battery module through a first circulating pump; the other end of the negative electrode liquid storage tank is divided into two paths, one path is connected with the flow battery module, and the other path is connected with the flow battery module through a second circulating pump.
Further, the input end of the cold source/heat source module is respectively connected with the positive electrode liquid storage tank and the negative electrode liquid storage tank through a second three-way valve.
Specifically, the liquid storage tank comprises a liquid storage tank base, an inner tank is arranged on the liquid storage tank base, a liquid storage tank wall is arranged on the outer side of the inner tank, and a phase change material filling layer is arranged between the inner tank and the liquid storage tank wall.
Further, an electrolyte outlet is formed in one side of the bottom of the tank wall of the liquid storage tank, an electrolyte inlet is correspondingly formed in the tank wall of the liquid storage tank above the electrolyte outlet, and the electrolyte outlet is respectively connected with the first circulating pump and the second circulating pump.
Further, the top of the liquid storage tank is provided with a heat exchange tube inlet, one side of the bottom of the wall of the liquid storage tank is provided with a heat exchange tube outlet, the phase change material filling layer is internally provided with a heat exchange tube, one end of the heat exchange tube is connected with the heat exchange tube inlet, and the other end of the heat exchange tube is correspondingly connected with the heat exchange tube outlet.
Further, the heat exchange tube is in a spiral structure.
Specifically, a buffer layer is arranged between the inner tank and the phase change material filling layer, and an insulation layer is arranged between the phase change material filling layer and the tank wall of the liquid storage tank.
Further, the buffer layer is made of elastic materials.
Specifically, the cold source/heat source module is a solar photo-thermal collector, industrial waste heat and waste gas and/or cooling water.
Compared with the prior art, the invention has at least the following beneficial effects:
According to the liquid flow battery liquid storage tank temperature control system based on phase change heat storage, the liquid storage tank has a good temperature control function, industrial waste heat and waste heat can be used as a temperature control working medium in winter, and the industrial waste heat can be sent into a heat exchange tube of the liquid flow battery liquid storage tank to heat electrolyte of the liquid flow battery, so that the problem that the liquid flow battery is difficult to start in winter is solved. The heat exchange pipeline is specially designed, so that the heat exchange pipeline has a larger heat exchange area and good heat exchange effect; an insulating layer is added on the outer side of the liquid storage tank of the flow battery, so that the temperature control effect is improved. The phase change material is arranged in the phase change layer, so that accurate temperature control can be realized, and the buffer layer is added on the inner side, so that stress generated by phase change can be absorbed; the heat source/cold source module can accurately control the temperature of the whole system by utilizing working media such as a solar photo-thermal collector, industrial waste heat and waste gas, cooling water and the like, so that energy conservation and emission reduction are realized.
Further, one side of the first circulating pump is connected with the positive electrode liquid storage tank, and the other side of the first circulating pump is connected with the flow battery stack; one side of the second circulating pump is connected with the negative electrode liquid storage tank, and the other side of the second circulating pump is connected with the flow cell stack. The electrolyte and the temperature control working medium of the flow battery can be guaranteed to circulate normally without mutual influence.
Furthermore, the heat exchange tube is specially designed, so that the heat exchange area can be enlarged, and the heat exchange efficiency can be improved.
Furthermore, the cold source/heat source module can accurately control the temperature of the whole system by utilizing working media such as a solar photo-thermal collector, industrial waste heat and waste gas, cooling water and the like, so that energy conservation and emission reduction are realized.
In summary, the invention realizes energy conservation and emission reduction by precisely controlling the temperature of the whole system by utilizing working media such as the solar photo-thermal collector, industrial waste heat and waste gas, cooling water and the like.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
FIG. 1 is a schematic diagram of a system according to the present invention;
FIG. 2 is a front view of a fluid reservoir of the present invention;
FIG. 3 is a longitudinal cross-sectional view of a fluid reservoir of the present invention;
FIG. 4 is a schematic view of a heat exchange tube according to the present invention.
Fig. 5 is a partial cross-sectional view of a fluid reservoir of the present invention.
Fig. 6 is a cloud of electrode current densities for flow batteries without temperature control.
Fig. 7 is a cloud of electrode current density for a flow battery employing temperature control.
Fig. 8 is a cloud image of total power consumption density of a flow battery without temperature control.
Fig. 9 is a cloud image of total power consumption density of a flow battery employing temperature control.
FIG. 10 is a thermal comparison of phase change material with and without phase change material filling.
Wherein: 1. a cold source/heat source module; 2. a controller; 3. a first three-way valve; 4. a positive electrode liquid storage tank; 5. a first circulation pump; 6. a negative electrode liquid storage tank; 7. a second circulation pump; 8. a flow cell stack; 9. a second three-way valve; 10. a buffer layer; 11. a heat exchange tube; 12. an inner tank; 13. a tank wall of the liquid storage tank; 14. a heat preservation layer; 15. a phase change material filling layer; 16. a liquid storage tank base; 17. an inlet of the heat exchange tube; 18. an outlet of the heat exchange tube; 19. an electrolyte outlet; 20. an electrolyte inlet; 21. an electrolyte flow channel; 22. an electrolyte inlet.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "one side", "one end", "one side", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
It should be understood that the terms "comprises" and "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
Various structural schematic diagrams according to the disclosed embodiments of the present invention are shown in the accompanying drawings. The figures are not drawn to scale, wherein certain details are exaggerated for clarity of presentation and may have been omitted. The shapes of the various regions, layers and their relative sizes, positional relationships shown in the drawings are merely exemplary, may in practice deviate due to manufacturing tolerances or technical limitations, and one skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions as actually required.
The flow battery is temperature-sensitive equipment, the performance of the flow battery is closely related to the temperature of electrolyte, and the electrolyte is precisely controlled in temperature, so that the flow battery can be ensured to be in higher working efficiency.
Referring to fig. 1, the temperature control system of a liquid flow battery liquid storage tank based on phase change heat storage of the invention comprises a cold source/heat source module 1, a liquid storage tank and a liquid flow battery module; the cold source/heat source module 1 is connected with the flow battery module through a liquid storage tank, and the phase change material in the liquid storage tank controls the temperature of electrolyte solution in the liquid storage tank along with endothermic and exothermic reactions through solid-liquid phase change.
The solar photo-thermal collector, industrial waste heat waste gas and cooling water are arranged in the cold source/heat source module 1, the output end of the cold source/heat source module 1 is connected with the positive electrode liquid storage tank 4 and the negative electrode liquid storage tank 6 of the liquid storage tank respectively through the controller 2 and the first three-way valve 3 in sequence, and the input end of the cold source/heat source module 1 is connected with the positive electrode liquid storage tank 4 and the negative electrode liquid storage tank 6 respectively through the second three-way valve 9.
When the external temperature in summer is higher than the optimal temperature of the electrolyte of the flow battery, cooling water is conveyed to the system for cooling; when the external temperature is lower than the optimal temperature of the electrolyte of the flow battery in winter, hot water in the solar photo-thermal collector or industrial waste heat and waste gas are conveyed to the system, and the temperature of the electrolyte solution in the positive electrode liquid storage tank 4 and the negative electrode liquid storage tank 6 is controlled.
In the cold source/heat source module 1, the controller 2 adjusts the opening degree of the second three-way valve 3 in real time according to the condition of the external temperature so as to realize accurate temperature control of electrolyte solution in the positive electrode liquid storage tank 4 and the negative electrode liquid storage tank 6.
The liquid storage tank comprises an anode liquid storage tank 4, a cathode liquid storage tank 6, a first circulating pump 5 and a second circulating pump 7; the positive electrode liquid storage tank 4 is divided into two paths, one path is directly connected with the flow battery module, and the other path is connected with the flow battery module through the first circulating pump 5; the negative electrode liquid storage tank 6 is divided into two paths, one path is directly connected with the flow battery module, and the other path is connected with the flow battery module through the second circulating pump 7; the flow battery module includes a flow battery stack 8.
Referring to fig. 2 and 3, a liquid storage tank base 16 is arranged at the bottom of the positive liquid storage tank 4 and the negative liquid storage tank 6, an inner tank 12 is arranged on the liquid storage tank base 16, a liquid storage tank wall 13 is arranged at the outer side of the inner tank 12, a buffer layer 10, a phase change material filling layer 15 and a heat preservation layer 14 are sequentially arranged between the inner tank 12 and the liquid storage tank wall 13, a heat exchange tube 11 is arranged in the phase change material filling layer 15, a heat exchange tube outlet 18 and an electrolyte outlet 19 are respectively arranged at the bottom side surface of the liquid storage tank wall 13, an electrolyte inlet 20 is correspondingly arranged at the position of the liquid storage tank wall 13 above the electrolyte outlet 19, and a heat exchange tube inlet 17 is arranged at the top of the positive liquid storage tank 4 and the negative liquid storage tank 6.
The phase change material in the phase change material filling layer 15 changes phase, and absorbs and releases heat, thereby controlling the temperature of the electrolyte solution in the positive electrode tank 4 and the negative electrode tank 6.
The working medium conveyed by the cold source/heat source module 1 enters the pipelines outside the positive electrode liquid storage tank 4 and the negative electrode liquid storage tank 6, so that the temperature of the electrolyte in the positive electrode liquid storage tank 4 and the negative electrode liquid storage tank 6 can be controlled, and the temperature of the phase change material filling layer 15 at the outer layer can also be controlled.
Referring to fig. 5, an insulating layer 14 is wrapped on the outer side of the phase change material filling layer 15, so that the electrolyte can be insulated, and a liquid storage tank wall 13 is wrapped on the outer side of the insulating layer 14; the buffer layer 10 is wrapped on the inner side of the phase change material filling layer 15, and the buffer layer 10 is made of elastic materials, so that extrusion of the phase change material due to self phase change can be counteracted, and damage to the liquid storage tank is avoided.
Referring to fig. 2 and 4, the working medium for controlling the temperature of the electrolyte enters from the inlets 18 of the heat exchange tubes at the bottoms of the positive liquid storage tank 4 and the negative liquid storage tank 6, the heat exchange tubes 11 are spiral, so that the heat exchange area can be enlarged, the heat exchange efficiency can be improved, and the working medium flows out from the outlet 18 of the heat exchange tube at the top after heat exchange, returns to the cold source/heat source module 1 and circulates.
Electrolyte flows into the inner tank 12 from the electrolyte inlets 20 at the upper parts of the positive electrode liquid storage tank 4 and the negative electrode liquid storage tank 6, and flows out from the electrolyte outlets 19 at the lower parts of the positive electrode liquid storage tank 4 and the negative electrode liquid storage tank 6, and the electrolyte outlets 19 are connected with the first circulating pump 5 and the second circulating pump 7 to send the electrolyte into the flow battery stack 8.
Referring to fig. 6, 7, 8 and 9, simulation results in the figures are shown in the following table, and according to the scheme of the present invention, the performance of the flow battery is obtained as follows:
| electrolyte temperature \DEG C | 0 | 32 |
| Electrode current density 10 3A\m2 | 1.04 | 1.07 |
| Electrode total power consumption Density 10 4W\m2 | 2.56 | 3.05 |
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of 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, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention mainly aims at the technical problem that the performance of a flow battery is greatly influenced by the temperature of electrolyte, and provides a method for accurately controlling the temperature of the electrolyte of the flow battery, which can utilize industrial waste heat, cooling water and the like to regulate the temperature of the electrolyte of the flow battery, so that the flow battery is in the optimal working performance.
Referring to fig. 10, the influence of the presence or absence of the phase change material on the electrolyte temperature of the flow battery is intuitively shown in fig. 10, and it can be seen from the figure that the electrolyte temperature in the liquid storage tank with the phase change material drops slowly along with the increase of time, so that a good temperature control effect is shown.
In summary, according to the liquid flow battery liquid storage tank temperature control system based on phase change heat storage, the energy conservation and emission reduction are realized by precisely controlling the temperature of the whole system by utilizing working media such as the solar photo-thermal collector, industrial waste heat and waste gas, cooling water and the like. The liquid storage tank has a good temperature control function, and can send industrial waste heat and waste heat into the heat exchange tube of the liquid flow battery liquid storage tank as a temperature control working medium in winter to heat the electrolyte of the liquid flow battery, so that the problem of difficult cold start of the liquid flow battery in winter is solved. The heat exchange pipeline is specially designed, so that the heat exchange pipeline has a large heat exchange area and a good heat exchange effect. An insulating layer is added on the outer side of the liquid storage tank of the flow battery, so that the temperature control effect is improved. The phase change material is arranged in the phase change layer, so that accurate temperature control can be realized, and the buffer layer is added on the inner side, so that stress generated by phase change can be absorbed. The system is provided with a plurality of controllers, so that the flow of different valves can be regulated, and the accurate temperature control is realized.
The above is only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited by this, and any modification made on the basis of the technical scheme according to the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (10)
1. The liquid flow battery liquid storage tank temperature control system based on phase change heat storage is characterized by comprising a cold source/heat source module (1), wherein the output end of the cold source/heat source module (1) is sequentially connected with a controller (2), a liquid storage tank and a liquid flow battery module; the phase change material in the liquid storage tank controls the temperature of electrolyte solution in the liquid storage tank through solid-liquid phase change along with endothermic and exothermic reactions, and when the external temperature is higher than the optimal temperature of electrolyte of the flow battery module, the cold source/heat source module (1) conveys cooling water to control the temperature of the electrolyte solution in the liquid storage tank; when the external temperature is lower than the optimal temperature of the electrolyte of the flow battery module, the cold source/heat source module (1) conveys hot water or industrial waste heat and waste gas to control the temperature of the electrolyte solution in the liquid storage tank.
2. The phase-change heat storage-based flow battery liquid storage tank temperature control system according to claim 1, wherein the liquid storage tank comprises an anode liquid storage tank (4) and a cathode liquid storage tank (6), one end of the anode liquid storage tank (4) and one end of the cathode liquid storage tank (6) are connected with the controller (2) through a first three-way valve (3), the other end of the anode liquid storage tank (4) is divided into two paths, one path is connected with the flow battery module, and the other path is connected with the flow battery module through a first circulating pump (5); the other end of the negative electrode liquid storage tank (6) is divided into two paths, one path is connected with the flow battery module, and the other path is connected with the flow battery module through a second circulating pump (7).
3. The phase-change heat storage-based flow battery liquid storage tank temperature control system according to claim 2, wherein the input end of the cold source/heat source module (1) is respectively connected with the positive electrode liquid storage tank (4) and the negative electrode liquid storage tank (6) through a second three-way valve (9).
4. A phase change heat storage based flow battery liquid storage tank temperature control system according to claim 1, 2 or 3, characterized in that the liquid storage tank comprises a liquid storage tank base (16), an inner tank (12) is arranged on the liquid storage tank base (16), a liquid storage tank wall (13) is arranged on the outer side of the inner tank (12), and a phase change material filling layer (15) is arranged between the inner tank (12) and the liquid storage tank wall (13).
5. The liquid flow battery liquid storage tank temperature control system based on phase change heat storage according to claim 4, wherein an electrolyte outlet (19) is arranged on one side of the bottom of the liquid storage tank wall (13), an electrolyte inlet (20) is correspondingly arranged at the position, above the electrolyte outlet (19), of the liquid storage tank wall (13), and the electrolyte outlet (19) is respectively connected with the first circulating pump (5) and the second circulating pump (7).
6. The liquid flow battery liquid storage tank temperature control system based on phase change heat storage according to claim 4, wherein a heat exchange tube inlet (17) is formed in the top of the liquid storage tank, a heat exchange tube outlet (18) is formed in one side of the bottom of the liquid storage tank wall (13), a heat exchange tube (11) is arranged in the phase change material filling layer (15), one end of the heat exchange tube (11) is connected with the heat exchange tube inlet (17), and the other end of the heat exchange tube is correspondingly connected with the heat exchange tube outlet (18).
7. The phase-change heat storage-based flow battery liquid storage tank temperature control system according to claim 6, wherein the heat exchange tube (11) is of a spiral structure.
8. The flow battery liquid storage tank temperature control system based on phase change heat storage according to claim 1, wherein a buffer layer (10) is arranged between the inner tank (12) and the phase change material filling layer (15), and an insulation layer (14) is arranged between the phase change material filling layer (15) and the liquid storage tank wall (13).
9. The phase-change heat storage-based flow battery liquid storage tank temperature control system according to claim 8, wherein the buffer layer (10) is made of an elastic material.
10. The phase-change heat storage-based flow battery liquid storage tank temperature control system according to claim 1, wherein the cold source/heat source module (1) is a solar photo-thermal collector, industrial waste heat and/or cooling water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410597152.8A CN118352563A (en) | 2024-05-14 | 2024-05-14 | Flow battery liquid storage tank temperature control system based on phase change heat storage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410597152.8A CN118352563A (en) | 2024-05-14 | 2024-05-14 | Flow battery liquid storage tank temperature control system based on phase change heat storage |
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| Publication Number | Publication Date |
|---|---|
| CN118352563A true CN118352563A (en) | 2024-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410597152.8A Pending CN118352563A (en) | 2024-05-14 | 2024-05-14 | Flow battery liquid storage tank temperature control system based on phase change heat storage |
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| Country | Link |
|---|---|
| CN (1) | CN118352563A (en) |
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- 2024-05-14 CN CN202410597152.8A patent/CN118352563A/en active Pending
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