CN203644856U - Electrolyte storage device and flow battery system - Google Patents
Electrolyte storage device and flow battery system Download PDFInfo
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- CN203644856U CN203644856U CN201320891745.2U CN201320891745U CN203644856U CN 203644856 U CN203644856 U CN 203644856U CN 201320891745 U CN201320891745 U CN 201320891745U CN 203644856 U CN203644856 U CN 203644856U
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Abstract
The utility model provides an electrolyte storage device and a flow battery system. The electrolyte storage device comprises a barrel body and a partition plate, wherein the partition plate is used for separating the barrel body into a first accommodation cavity and a second accommodation cavity; and one or more electrolyte balancing holes are formed in the partition plate and used for balancing the electrolyte in the first accommodation cavity and the second accommodation cavity. Since the partition plate is used for separating the barrel body into the first accommodation cavity and the second accommodation cavity, positive electrode electrolyte and negative electrode electrolyte can be stored in the barrel body at the same time, thereby reducing occupied area of the electrolyte storage device. Since the electrolyte balancing holes are formed in the partition plate, the electrolyte balance of the first accommodation cavity and the second accommodation cavity is ensured; a connection pipeline does not need to be arranged, thereby further reducing the occupied area of the electrolyte storage device, improving usage reliability, reducing installation complexity and removing potential safety hazard. The electrolyte storage device has the characteristics of simple structure and low manufacture cost.
Description
Technical field
The utility model relates to flow battery field, more specifically, relates to a kind of electrolyte storage device and flow battery system.
Background technology
As shown in Figure 1, flow battery system of the prior art (for example: vanadium flow battery system VFB) comprising: electrolyte storage device, anode electrolyte circulating line 60 ', anode electrolyte pump 70 ', pile 50 ', negative pole cell liquor pump 80 ', negative pole electrolyte circulating line 90 ', electrolyte storage device comprises anode electrolyte bucket and negative pole electrolyte bucket, and anode electrolyte bucket and negative pole electrolyte bucket independently arrange, anode electrolyte bucket is communicated with the positive pole of pile 50 ' by anode electrolyte circulating line 60 ' and anode electrolyte pump 70 ', negative pole electrolyte bucket is communicated with the negative pole of pile 50 ' by negative pole electrolyte circulating line 90 ' and negative pole cell liquor pump 80 '.Due to the easy oxidized inefficacy of electrolyte ingress of air, thereby electrolyte storage device generally all adopts closed structure, thus and isolate from outer air.
Vanadium flow battery system is a kind of efficient reversible fuel cell, has the advantages such as power is large, capacity is large, efficiency is high, cost is low, the life-span is long, environmental protection.Vanadium flow battery system has good application prospect in fields such as photovoltaic generation, wind power generation, distribution power station, peak load regulation network, communication base station, ups power, traffic municipal administration, military electric power storages.Electrolyte in vanadium flow battery system is energy unit, realize the storage of electric energy, the amount of electrolyte has determined the working capacity size of vanadium flow battery system, pile (pile 50 ') is power cell, realize the conversion of electric energy and chemical energy, determined the operating power size of vanadium flow battery system.
When vanadium flow battery system works, positive and negative electrode electrolyte is carried by the circulation of positive and negative electrode circulate electrolyte pipeline, between pile and electrolyte storage device, circulates.Positive and negative electrode electrolyte is separated by proton exchange membrane in pile inside, does not contact mutually, carries out respectively electrochemical reaction on positive and negative electrode electrode, realizes the conversion of electric energy and chemical energy.When charging, absorb the electric energy of external power source, in negative pole electrolyte, trivalent vanadium changes bivalent vanadium into, and in anode electrolyte, tetravalence vanadium changes pentavalent vanadium into.When electric discharge, in negative pole electrolyte, bivalent vanadium changes trivalent vanadium into, and in anode electrolyte, pentavalent vanadium changes tetravalence vanadium into, emits the electric energy of storage simultaneously.
Vanadium flow battery system uses proton exchange membrane as the barrier film between positive and negative electrode conventionally.In the process discharging and recharging at pile 50 ', the active material (for example: vanadic sulfate) in positive and negative electrode electrolyte all can see through proton exchange membrane to another utmost point migration.Due to the migration velocity difference of the active material in positive and negative electrode electrolyte, thereby after battery long-time running, can cause the active material in active material or the negative pole electrolyte in anode electrolyte too much to a certain utmost point skew, thereby cause the liquid level of positive and negative electrode electrolyte unbalance, and then cause battery capacity to decline.
In the process of flow battery system operation, the liquid level of positive and negative electrode electrolyte can change.When charging, anode electrolyte liquid level declines, negative pole electrolyte liquid level raises; When electric discharge, negative pole electrolyte liquid level declines, anode electrolyte liquid level raises.Because anode electrolyte bucket and negative pole electrolyte bucket independently arrange, thereby anode electrolyte bucket and the part relatively independent sealing of negative pole electrolyte bucket above liquid level, in the time that the liquid level of positive and negative electrode electrolyte changes, the air pressure of anode electrolyte bucket and negative pole electrolyte bucket can change, and the rising of air pressure or reduction can cause inside battery operational environment to change, may destroy the sealing of battery, the service behaviour that affects pile and working life, have potential safety hazard.
In order to guarantee the balance of positive and negative electrode electrolyte, in prior art, there is following control method:
One, adjust method (batchwise liquid adjusting method) in batches.In the application of the patent No. (US6764789B1), propose one and adjusted method in batches, when flow battery system carries out after the charge and discharge cycles of a period of time, negative or positive electrode electrolyte is directed to the side that liquid level is low from the high side of liquid level with negative or positive electrode cell liquor pump, thereby make the liquid level equilibrium of positive and negative electrode electrolyte, and then guarantee that battery capacity can not decline.
Two, press over system (overflow method).A kind of press over system has also been proposed in the application of the patent No. (US6764789B1), press over system is, between anode electrolyte bucket and negative pole electrolyte bucket, a pipeline being connected is set, thereby make negative or positive electrode electrolyte rely on gravitational difference from the high effluent of liquid level to the low side of liquid level, make the liquid level equilibrium of positive and negative electrode electrolyte.
Three, the application of the patent No. (CN10205500A) has proposed the method for the long-term continuous service of redox flow battery system on the basis of the application of the patent No. (US6764789B1): the anode electrolyte bucket of redox flow battery system and negative pole electrolyte bucket keep being communicated with by pipeline, wherein, be not less than 10 for the pipeline draw ratio being communicated with.
Although electrolyte storage device of the prior art can make the liquid level equilibrium of positive and negative electrode electrolyte, guarantee that battery capacity can not decline, but, electrolyte storage device of the prior art still exist take up room large, system cost is high, install complexity high, easily there is leakage point, have the problem of potential safety hazard.
Utility model content
The utility model aims to provide a kind of electrolyte storage device and flow battery system, with solve electrolyte storage device of the prior art have take up room large, the problem that complexity is high, have potential safety hazard is installed.
For solving the problems of the technologies described above, according to an aspect of the present utility model, provide a kind of electrolyte storage device, comprising: staving; Dividing plate, staving is divided into the first container cavity and the second container cavity by dividing plate; On dividing plate, be provided with the one or more electrolyte balances hole for the electrolyte of balance the first container cavity and the second container cavity.
Further, the pore size difference at least two electrolyte balance holes in multiple electrolyte balances hole.
Further, the cross section of dividing plate is L shaped or I shape or S shape.
Further, electrolyte storage device also comprises air equalizer opening, and air equalizer opening is arranged on dividing plate.
Further, the number of air equalizer opening is one or more.
Further, the pore size difference of at least two air equalizer openings in multiple air equalizer openings.
Further, electrolyte storage device also comprises the liquid level baffle plate for stopping electrolyte balance hole, and liquid level baffle plate is arranged on position corresponding to electrolyte balance hole, and liquid level baffle plate is flexibly connected with dividing plate.
Further, electrolyte storage device also comprises the air pressure baffle plate for stopping air equalizer opening, and air pressure baffle plate is arranged on the position that air equalizer opening is corresponding, and air pressure baffle plate is flexibly connected with dividing plate.
According to another aspect of the present utility model, a kind of flow battery system is provided, comprise pile and electrolyte storage device, electrolyte storage device is above-mentioned electrolyte storage device, the positive pole of pile is communicated with the first container cavity of electrolyte storage device, and the negative pole of pile is communicated with the second container cavity of electrolyte storage device.
In staving of the present utility model, be provided with dividing plate, staving is divided into the first container cavity and the second container cavity by dividing plate, and on dividing plate, be provided with the one or more electrolyte balances hole for the electrolyte of balance the first container cavity and the second container cavity.Because staving is divided into the first container cavity and the second container cavity by dividing plate, thereby can deposit positive and negative electrode electrolyte in staving simultaneously, thereby reduce the area occupied of electrolyte storage device.Owing to being provided with electrolyte balance hole on dividing plate, thereby the electrolyte balance of assurance the first container cavity and the second container cavity, and without connecting tube is set, further reduced electrolyte storage device area occupied, improved dependability, reduced installation complexity, eliminated potential safety hazard.Meanwhile, the electrolyte storage device in the utility model has feature simple in structure, low cost of manufacture.
Accompanying drawing explanation
The accompanying drawing that forms the application's a part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 has schematically shown the structural representation of flow battery system of the prior art;
Fig. 2 has schematically shown the structural representation of the flow battery system in a preferred embodiment in the utility model;
Fig. 3 has schematically shown the structural representation of the flow battery system in another preferred embodiment in the utility model;
Fig. 4 has schematically shown electrolyte balance hole in a preferred embodiment in the utility model and the schematic diagram of arranging of air equalizer opening;
Fig. 5 has schematically shown electrolyte balance hole in another preferred embodiment in the utility model and the schematic diagram of arranging of air equalizer opening;
Fig. 6 has schematically shown electrolyte balance hole in another preferred embodiment in the utility model and the schematic diagram of arranging of air equalizer opening; And
Fig. 7 has schematically shown electrolyte balance hole in another preferred embodiment in the utility model and the schematic diagram of arranging of air equalizer opening.
Reference numeral in figure: 10, staving; 11, the first container cavity; 12, the second container cavity; 20, dividing plate; 30, electrolyte balance hole; 40, air equalizer opening; 50, pile; 60, anode electrolyte circulating line; 70, anode electrolyte pump; 80, negative pole cell liquor pump; 90, negative pole electrolyte circulating line; 50 ', pile; 60 ', anode electrolyte circulating line; 70 ', anode electrolyte pump; 80 ', negative pole cell liquor pump; 90 ', negative pole electrolyte circulating line.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
As first aspect of the present utility model, provide a kind of electrolyte storage device.As shown in Figures 2 to 7, electrolyte storage device comprises: staving 10; Dividing plate 20, staving 10 is divided into the first container cavity 11 and the second container cavity 12 by dividing plate 20; On dividing plate 20, be provided with for example, one or more electrolyte balances hole 30 for the electrolyte (: electrolyte liquid level and active material) of balance the first container cavity 11 and the second container cavity 12.
While using the electrolyte storage device in the utility model, positive and negative electrode electrolyte (for example: anode electrolyte includes tetravalence, pentavalent vanadium solution, negative pole electrolyte includes divalence, trivalent vanadium solution) should leave in respectively in the first container cavity 11 and the second container cavity 12, and positive and negative electrode liquid level of electrolyte should be higher than electrolyte balance hole 30, thereby assurance positive and negative electrode electrolyte can be realized liquid level equilibrium by electrolyte balance hole 30, and then guarantee that battery capacity is stable.Because staving 10 is divided into the first container cavity 11 and the second container cavity 12 by dividing plate 20, thereby staving 10 is interior can deposit positive and negative electrode electrolyte simultaneously, thereby has reduced the area occupied of electrolyte storage device.Owing to being provided with electrolyte balance hole 30 on dividing plate 20, thereby the electrolyte balance of assurance the first container cavity 11 and the second container cavity 12, guarantee the stable of the interior active matter quality of positive and negative electrode electrolyte, thereby prevented that battery capacity from declining.Due to without connecting tube is set, further reduced electrolyte storage device area occupied, improved dependability, reduced installation complexity, eliminated potential safety hazard.Meanwhile, the electrolyte storage device in the utility model has feature simple in structure, low cost of manufacture.
Preferably, staving 10 and dividing plate 20 adopt the material of electrolyte resistance corrosion to make.Further, staving 10 and dividing plate 20 adopt the material such as polypropylene or polyethylene or polyvinyl chloride or Merlon or polyamide to make.
Preferably, the thickness of staving 10 and dividing plate 20 need meet instructions for use, should be according to the liquid quality of positive and negative electrode electrolyte, density of electrolyte, install and use the actual conditions such as environment and determine.
Preferably, the cross section of staving 10 is the shaped form of circle or polygon or sealing etc.Certainly, staving 10 can also be triangular pyramidal or cylindrical or conical etc.
Preferably, the cross section of the dividing plate 20 in the utility model is L shaped or I shape or S shape.As shown in Figure 2, the cross section of dividing plate 20 is I shape, and the circumferential edge of dividing plate 20 is connected with the inwall of staving 10, and staving 10 is divided into the first container cavity 11 and the second container cavity 12 by the dividing plate 20 of I shape.Certainly,, except the dividing plate 20 of above-mentioned L shaped or I shape or S shape, as long as dividing plate 20 can be separated out staving 10 the first container cavity 11 and the second container cavity 12, dividing plate 20 is all applicable.For example: the cross section of dividing plate 20 can also be that arc line shaped or multistage are linear etc.
In embodiment as shown in Figure 6, the number in electrolyte balance hole 30 is one, only has the electrolyte storage device in an electrolyte balance hole 30 still to have the effect of balance positive and negative electrode electrolyte liquid level.
As 4 and Fig. 5 as shown in embodiment in, the number in electrolyte balance hole 30 is multiple, multiple electrolyte balances hole 30 is arranged on dividing plate 20 at intervals, positive and negative electrode electrolyte can carry out the adjusting of liquid level equilibrium by multiple electrolyte balances hole 30.Owing to being provided with multiple electrolyte balances hole 30, thereby reduce the single area in each electrolyte balance hole 30, thereby avoid the exchange of positive and negative electrode electrolyte large area, fused (those skilled in the art will know that, if the aperture in electrolyte balance hole 30 is excessive, can strengthen the self discharge of pile 50, thereby cause current efficiency too low.
Preferably, the pore size difference (please refer to Fig. 3, Fig. 5 and Fig. 7) at least two electrolyte balance holes 30 in multiple electrolyte balances hole 30.Certainly, the pore size at least two electrolyte balance holes 30 in multiple electrolyte balance hole 30 also can be identical.
Preferably, in multiple electrolyte balances hole 30, the distance between at least two electrolyte balance holes 30 is not etc.Staff can be according to circumstances, and the position of multiple electrolyte balances hole 30 on dividing plate 20 is set.Certainly, electrolyte balance hole 30 can be arranged on the optional position of dividing plate 20 in liquid level below, as long as electrolyte balance hole 30 can keep the first container cavity 11 to be communicated with the positive and negative electrode electrolyte in the second container cavity 12.Same, shape, the arrangement mode in multiple electrolyte balances hole 30 can arrange arbitrarily as required.
Preferably, electrolyte storage device also comprises the liquid level baffle plate for stopping electrolyte balance hole 30, and liquid level baffle plate is arranged on the position of electrolyte balance hole 30 correspondences, and liquid level baffle plate is flexibly connected with dividing plate 20.Owing to being provided with liquid level baffle plate, thereby staff can use liquid level baffle plate to regulate the connected state of the first container cavity 11 and the second container cavity 12 as required, when liquid level baffle plate is corresponding with electrolyte balance hole 30 while arranging, liquid level baffle plate stops the exchange of positive and negative electrode electrolyte, thereby reduce the self discharge of pile 50, make the liquid level equilibrium of electrolyte storage device there is controllability.In a not shown embodiment, liquid level baffle plate for example, is flexibly connected with dividing plate 20 by securing member (: screw).
Certainly, liquid level baffle plate can be multiple, multiple liquid level baffle plates can arrange with multiple electrolyte balances hole 30 respectively correspondingly, staff can regulate the use number in electrolyte balance hole 30 according to actual needs, further improved electrolyte storage device use controllability, expanded the scope of application of electrolyte storage device.
Preferably, as shown in Figures 2 to 6, electrolyte storage device also comprises air equalizer opening 40, and air equalizer opening 40 is arranged on dividing plate 20.Owing to being provided with air equalizer opening 40, thereby in the time that the air pressure in the air pressure in the first container cavity 11 and the second container cavity 12 has difference, air equalizer opening 40 can play the effect of equilibrium air pressure, thereby reduce due to the first container cavity 11 or excessive, the too small problem that causes cell damage of the second container cavity 12 internal gas pressures, and then improved the dependability of electrolyte storage device.
Preferably, the number of air equalizer opening 40 is one or more.In embodiment as shown in Figure 4, the number of air equalizer opening 40 is one, only have the electrolyte storage device of an air equalizer opening 40 still can play the effect of the air pressure in air pressure and the second container cavity 12 in balance the first container cavity 11, thereby it is reliable to guarantee that electrolyte storage device uses.
Preferably, as shown in Figure 5 and Figure 6, the number of air equalizer opening 40 is multiple, the pore size difference of at least two air equalizer openings 40 in multiple air equalizer openings 40.Because air equalizer opening 40 is for the air pressure in balance the first container cavity 11 and the second container cavity 12, thereby the pore size of air equalizer opening 40 can be different.Certainly, the pore size of multiple air equalizer openings 40 also can be all identical.
Preferably, in multiple air equalizer openings 40, the distance between at least two air equalizer openings 40 is not etc.Staff can be according to circumstances, and the position of multiple air equalizer openings 40 on dividing plate 20 is set.Certainly, air equalizer opening 40 can be arranged on the optional position of dividing plate 20 more than liquid level, as long as air equalizer opening 40 can keep the first container cavity 11 to be communicated with the second container cavity 12.Same, shape, the arrangement mode of multiple air equalizer openings 40 can arrange arbitrarily as required.
Preferably, the gross area of air equalizer opening 40 need to be determined according to the volume size of the staving of electrolyte storage device 10.Air equalizer opening 40 should guarantee that the air pressure in staving 10 is able to rapid balance in the time that the liquid level of positive and negative electrode electrolyte changes.
Preferably, the top edge of dividing plate 20 or lateral edges (in the part of liquid level top) are not exclusively connected with staving 10.Because top edge or the lateral edges (in the part of liquid level top) of dividing plate 20 are not exclusively connected with staving 10, thereby first container cavity 11 be connected with the gas in the second container cavity 12, thereby avoid due to the first container cavity 11 or excessive, the too small problem that causes cell damage of the second container cavity 12 internal gas pressures, and then improved the dependability of electrolyte storage device.
Preferably, the determination methods for electrolyte balance hole 30 with air equalizer opening 40: is electrolyte balance hole 30 below positive and negative electrode liquid level of electrolyte, in positive and negative electrode liquid level of electrolyte top is air equalizer opening 40.Electrolyte balance hole 30 or air equalizer opening 40 are according to the position relationship between this hole and liquid level and definite.And in different embodiment, in electrolyte storage device positive and negative electrode electrolyte number also determining that this hole is electrolyte balance hole 30, or air equalizer opening 40.
Preferably, electrolyte storage device also comprises the air pressure baffle plate for stopping air equalizer opening 40, and air pressure baffle plate is arranged on the position of air equalizer opening 40 correspondences, and air pressure baffle plate is flexibly connected with dividing plate 20.Further, air pressure baffle plate can be multiple, multiple air pressure baffle plates and multiple air equalizer opening 40 arrange correspondingly, staff is the use number of adjustable pressure balancing hole 40 according to actual needs, thus further improved electrolyte storage device use controllability, expanded the scope of application of electrolyte storage device.In a not shown embodiment, air pressure baffle plate for example, is flexibly connected with dividing plate 20 by securing member (: screw).Certainly, air pressure baffle plate can also be the part after the prolongation of liquid level baffle plate.
Preferably, dividing plate 20 is one-body molded with staving 10, or dividing plate 20 with staving 10 by welding or bonding being fixedly connected with.Further, dividing plate 20 is one-body molded by the technique of injection mo(u)lding with staving 10.Because dividing plate 20 is fixedly connected with staving 10, thereby the first container cavity 11 and the second container cavity 12 that guarantee electrolyte storage device all have good sealing, thereby avoid the large-area phase counterdiffusion of positive and negative electrode electrolyte, guaranteed the dependability of electrolyte storage device.
As second aspect of the present utility model, provide a kind of flow battery system.As shown in Figure 2, flow battery system comprises pile 50 and electrolyte storage device, electrolyte storage device is above-mentioned electrolyte storage device, the positive pole of pile 50 is communicated with the first container cavity 11 of electrolyte storage device, and the negative pole of pile 50 is communicated with the second container cavity 12 of electrolyte storage device.Because the electrolyte storage device in the utility model can be deposited positive and negative electrode electrolyte simultaneously, thereby reduce the area occupied of flow battery system.Because electrolyte storage device is not only provided with electrolyte balance hole 30, is also provided with air equalizer opening 40, thereby discharge and recharge for a long time in the process of operation at flow battery system, can guarantee the positive and negative electrode electrolyte balance in electrolyte storage device, and guarantee the air pressure balance in staving 10, and then reduced the problem that causes battery capacity to decline because of the active material migration in positive and negative electrode electrolyte, further improve the dependability of flow battery system.
Flow battery system in the utility model also comprises anode electrolyte circulating line 60, anode electrolyte pump 70, negative pole cell liquor pump 80, negative pole electrolyte circulating line 90, the first container cavity 11 of electrolyte storage device is communicated with the positive pole of pile 50 by anode electrolyte circulating line 60 and anode electrolyte pump 70, and the second container cavity 12 of electrolyte storage device is communicated with the negative pole of pile 50 by negative pole electrolyte circulating line 90 and negative pole cell liquor pump 80.
The gross area in electrolyte balance hole 30 is relevant to the active area of proton exchange membrane in pile, proton exchange membrane area is larger, the active matter quality moving by film is just larger, need to be also larger by the amount of electrolyte balance hole 30 balances, and electrolyte balance hole 30 gross areas are larger.When practical operation, the area in electrolyte balance hole 30 is very little, and take following embodiment as example, the perforated area in electrolyte balance hole 30 is several square millimeters only.In a preferred embodiment, the basic structure of flow battery system (please refer to Fig. 2) is as follows:
1. pile 50 is made up of 10 monocells;
2. adopt Nafion115 full fluorin proton exchange film, monocell active area is 625 square centimeters;
3 positive and negative electrode electrolyte vanadium ion concentration 1.8mol/L, initial positive and negative electrode electrolyte volume is 20L;
4. staving 10 is made up of pvc material (or polyethylene), and staving 10 is of a size of long 620mm, wide 310mm, high 350mm, bucket internal partition 20 thickness 5mm.
5. charge and discharge mode is: 50A constant current charge, final voltage 16V; 50A constant-current discharge, final voltage 10V; 3 hours about used times of each charge and discharge cycles.
Staving testing scheme is as follows:
(1) embodiment 1: being provided with three diameters on dividing plate 20 is 1mm electrolyte balance hole 30, and the gross area in electrolyte balance hole 30 is 2.36 square millimeters; On dividing plate 20, be provided with the air equalizer opening 40 that a diameter is 10mm;
(2) embodiment 2: being provided with two diameters on dividing plate 20 is 1mm electrolyte balance hole 30, and the gross area in electrolyte balance hole 30 is 1.57 square millimeters; On dividing plate 20, be provided with the air equalizer opening 40 that a diameter is 10mm;
(3) embodiment 3: being provided with a diameter on dividing plate 20 is 1mm electrolyte balance hole 30, and the gross area in electrolyte balance hole 30 is 0.79 square millimeter; On dividing plate 20, be provided with the air equalizer opening 40 that a diameter is 10mm;
(4) embodiment 4: being provided with two diameters on dividing plate 20 is 10mm electrolyte balance hole 30, and the gross area in electrolyte balance hole 30 is 39.27 square millimeters; On dividing plate 20, be provided with the air equalizer opening 40 that a diameter is 10mm;
(5) comparative example 1: adopt flow battery system test as shown in Figure 1.
Test result is as shown in table 1:
Table 1
Shown in upper table, after 100 circulations of flow battery system operation, in comparative example 1, residual capacity only remains 67.1%; And in embodiment 1,2,3 in the utility model, residual capacity exceeds 15,26 and 17 percentage points than comparative example 1 respectively, and current efficiency value is all more than 90%; Thereby absolutely prove capability value when flow battery system in the utility model can keep flow battery system long-time running effectively; But in embodiment 4, residual capacity is on the contrary lower than comparative example 1, thereby absolutely proves if perforate effective area is excessive, can cause the electrolyte balance effect of system to reduce on the contrary.
Preferably, the gross area in electrolyte balance hole 30 is 0-39 square millimeter (being the proton exchange membrane of 625000 square millimeters to area).Namely, the gross area in electrolyte balance hole 30 accounts for the 0-0.006% of dividing plate 20 gross areas.
Further, the gross area in electrolyte balance hole 30 is 0.5-2.5 square millimeter.Namely, the gross area in electrolyte balance hole 30 accounts for the 0.00008%-0.0004% of dividing plate 20 gross areas.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (9)
1. an electrolyte storage device, is characterized in that, comprising:
Staving (10);
Dividing plate (20), described staving (10) is divided into the first container cavity (11) and the second container cavity (12) by described dividing plate (20); On described dividing plate (20), be provided with the one or more electrolyte balances hole (30) with the electrolyte of described the second container cavity (12) for the first container cavity (11) described in balance.
2. electrolyte storage device according to claim 1, is characterized in that, the pore size difference at least two the described electrolyte balance holes (30) in multiple described electrolyte balances holes (30).
3. electrolyte storage device according to claim 1, is characterized in that, the cross section of described dividing plate (20) is L shaped or I shape or S shape.
4. electrolyte storage device according to claim 1, is characterized in that, described electrolyte storage device also comprises air equalizer opening (40), and described air equalizer opening (40) is arranged on described dividing plate (20).
5. electrolyte storage device according to claim 4, is characterized in that, the number of described air equalizer opening (40) is one or more.
6. electrolyte storage device according to claim 5, is characterized in that, the pore size difference of at least two the described air equalizer openings (40) in multiple described air equalizer openings (40).
7. electrolyte storage device according to claim 1, it is characterized in that, described electrolyte storage device also comprises the liquid level baffle plate for stopping described electrolyte balance hole (30), described liquid level baffle plate is arranged on position corresponding to described electrolyte balance hole (30), and described liquid level baffle plate is flexibly connected with described dividing plate (20).
8. electrolyte storage device according to claim 4, it is characterized in that, described electrolyte storage device also comprises the air pressure baffle plate for stopping described air equalizer opening (40), described air pressure baffle plate is arranged on the position that described air equalizer opening (40) is corresponding, and described air pressure baffle plate is flexibly connected with described dividing plate (20).
9. a flow battery system, comprise pile (50) and electrolyte storage device, it is characterized in that, described electrolyte storage device is the electrolyte storage device described in any one in claim 1 to 8, the positive pole of described pile (50) is communicated with first container cavity (11) of described electrolyte storage device, and the negative pole of described pile (50) is communicated with second container cavity (12) of described electrolyte storage device.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105742682A (en) * | 2016-04-27 | 2016-07-06 | 苏州久润能源科技有限公司 | Redox flow battery system |
| CN105789665A (en) * | 2016-03-14 | 2016-07-20 | 上海电气集团股份有限公司 | Liquid level balancing system |
| CN106252690A (en) * | 2016-08-12 | 2016-12-21 | 清华大学深圳研究生院 | A kind of method and system extending all-vanadium flow battery cycle life |
| CN110230807A (en) * | 2019-05-31 | 2019-09-13 | 浙江特富锅炉有限公司 | A kind of high-field electrode boiler of vacuum linear arrangement |
| CN113073338A (en) * | 2021-03-19 | 2021-07-06 | 深圳市创辉氢科技发展有限公司 | Electrolytic cell |
| CN114024002A (en) * | 2021-10-20 | 2022-02-08 | 北京和瑞储能科技有限公司 | Automatic liquid level balancing device and flow battery system |
| CN114883596A (en) * | 2020-12-21 | 2022-08-09 | 广东三水合肥工业大学研究院 | Positive electrode precipitate recovery device for managing all-vanadium redox flow battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105789665A (en) * | 2016-03-14 | 2016-07-20 | 上海电气集团股份有限公司 | Liquid level balancing system |
| CN105789665B (en) * | 2016-03-14 | 2019-09-03 | 上海电气集团股份有限公司 | A kind of liquid level equilibrium system |
| CN105742682A (en) * | 2016-04-27 | 2016-07-06 | 苏州久润能源科技有限公司 | Redox flow battery system |
| CN106252690A (en) * | 2016-08-12 | 2016-12-21 | 清华大学深圳研究生院 | A kind of method and system extending all-vanadium flow battery cycle life |
| CN110230807A (en) * | 2019-05-31 | 2019-09-13 | 浙江特富锅炉有限公司 | A kind of high-field electrode boiler of vacuum linear arrangement |
| CN114883596A (en) * | 2020-12-21 | 2022-08-09 | 广东三水合肥工业大学研究院 | Positive electrode precipitate recovery device for managing all-vanadium redox flow battery |
| CN114883596B (en) * | 2020-12-21 | 2024-04-26 | 广东三水合肥工业大学研究院 | Positive electrode precipitate recovery device for managing all-vanadium redox flow battery |
| CN113073338A (en) * | 2021-03-19 | 2021-07-06 | 深圳市创辉氢科技发展有限公司 | Electrolytic cell |
| CN114024002A (en) * | 2021-10-20 | 2022-02-08 | 北京和瑞储能科技有限公司 | Automatic liquid level balancing device and flow battery system |
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