CN206349448U - A kind of pile of redox flow batteries - Google Patents
A kind of pile of redox flow batteries Download PDFInfo
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- CN206349448U CN206349448U CN201621307307.7U CN201621307307U CN206349448U CN 206349448 U CN206349448 U CN 206349448U CN 201621307307 U CN201621307307 U CN 201621307307U CN 206349448 U CN206349448 U CN 206349448U
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- pile
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- monocell
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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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Abstract
The utility model is related to the electric pile structure of redox flow batteries, is overlapped assembled successively by the monocell at bipolar plates interval, upper collector plate, upper insulation plate and pile upper head plate more than pile bottom plate, lower insulation plate, lower header plate, 1 section monocell or 2 sections.Wherein monocell is made up of negative electrode, negative electrode frame and the negative pole sealing gasket in the positive electrode in positive pole sealing gasket, anode electrode frame, embedded electrode frame, ion-conductive membranes, embedded electrode frame.Monocell fluid path in pile is in parallel, the monocell circuit connected in series between lower insulation plate and upper insulation plate.By setting false battery that the end-cell for easily causing electrolyte distribution inequality is moved on to the outside of circuit connected in series battery so that the electrolyte distribution in addition to false battery is more uniform, so as to reduce concentration polarization, improves voltage uniformity.Vacation battery can be used as the SOC batteries of monitoring system open-circuit voltage in addition, eliminate additional SOC batteries and pipeline in system.
Description
Technical field
The utility model is related to flow cell pile structure, the univoltage uniformity more particularly in flow cell pile.
Background technology
The mankind make excessive demands the arrival again for just promoting energy revolution for the extreme of the energy, and regenerative resource is used as a kind of environment
Friendly energy source type is increasingly becoming the main body in energy resource structure, in the energy upgrading plan of every country, all efficient utilization
Regenerative resource as energy resource structure transition and upgrade the most important thing.But to be not as traditional thermoelectricity the same for regenerative resource,
Output can be adjusted as desired, and it is necessary to have supporting energy storage device ability for its discontinuous, unstable, uncontrollable feature request
It can be fitted close with power network.Energy storage device can require that flexible dispatching regenerative resource is carried according to the difference of power network different periods
The surf time of high regenerative resource, increase benefit.This requires energy storage device to have high response, highly reliable and high energy
Dispatching.In numerous energy storage technologies, chemical energy storage with its characteristics of flexible, reliable as the head in numerous energy storage modes
Choosing.And flow battery is even more so that cost performance in flexible design, efficiency high, environment-friendly, life cycle is high and turns into most promising
Energy storage technology.
The electrolyte of flow battery is stored in the outside of battery, and electrolyte flows into the electricity of inside battery through circulating pump when using
Pole, flow back into electrolyte storage tank again after participating in electrochemical reaction.Commercial flow battery is to constitute system module by pile,
And pile is to be in series by more than ten or even tens section monocells by bipolar plates.The electrolyte supervisor that electrolyte passes through in pile
Road flows into each batteries, and electrolyte distributes uneven phenomenon between each batteries often occur, causes voltage's distribiuting uneven
It is even, reduction battery performance and life-span.It is wherein particularly evident with the inhomogeneities of the end-cell at pile two ends.Reason is：1st, two
Side end cell is connected with the metal collector plate of whole pile, and contact resistance is larger, and CURRENT DISTRIBUTION is uneven；2nd, end-cell and end plate phase
Neighbour, while being also arrival end or the end of electrolyte main line in pile, the special end plate O-ring being matched therewith is frequent
Using the design of high compression ratio, the electrolyte that end-cell can be tied up after assembling compression imports and exports runner, causes the electrolysis flowed into
Liquid is reduced, concentration polarization increase.So, while end-cell is reduced with collector plate contact resistance, electrolyte is improved in each section
Distributing uniformity in battery, could really improve the voltage uniformity of pile.
Utility model content
Too high to solve flow cell pile middle-end cell voltage, the problem of voltage uniformity is poor, the utility model is provided
It is a kind of to improve the electric pile structure that electrolyte is evenly distributed in pile between each battery, significantly improve in pile due to electrolysis
The uneven phenomenon of univoltage caused by the uneven battery concentration polarization increase caused of liquid distribution, improves performance and the longevity of pile
Life.
To reach above-mentioned purpose, the technical solution adopted in the utility model is：
A kind of pile of redox flow batteries, by pile bottom plate, lower insulation plate, lower header plate, 1 section monocell or
More than 2 sections overlapped assembled successively by the monocell at bipolar plates interval, upper collector plate, upper insulation plate and pile upper head plate, on
Tensed between end plate and bottom plate by screw rod and nut and apply assembling pressure；Wherein monocell is by positive pole sealing gasket, positive pole
Negative electrode, negative electrode frame and negative pole in electrode frame, the positive electrode in embedded electrode frame, ion-conductive membranes, embedded electrode frame
Sealing gasket overlaps composition successively.
Saved more than monocell or 2 sections by bipolar plates or insulation provided with insulation board, 1 between pile bottom plate and lower insulation plate
The monocell (being used as false battery) at plate interval, forms pile bottom plate, insulation board, monocell and the lower insulation plate knot overlapped successively
Structure；And/or, saved more than monocell or 2 sections by bipolar plates or insulation board interval provided with 1 between pile upper head plate and upper insulation plate
Monocell (being used as false battery), form the pile upper head plate, insulation board, monocell and the upper insulation plate structure that overlap successively.
The monocell fluid path being wherein located in pile is in parallel, and single electricity between lower insulation plate and upper insulation plate is located in pile
Pond circuit connected in series.
The amberplex in the monocell between bottom plate and lower insulation plate in above-mentioned pile can be with insulation board more
Change；And/or, the amberplex in monocell between pile upper head plate and upper insulation plate can be changed with insulation board.
Above-mentioned single electricity between pile bottom plate and lower insulation plate, and/or between pile upper head plate and upper insulation plate
Pond can as system SOC batteries, monitor open-circuit voltage, eliminate the SOC batteries and pipeline additionally set in system.
Brief description of the drawings
Fig. 1 routine piles and electrolyte inside flow passage structure.
1- end plates, 2- insulation boards, 3- collector plates, 4- bipolar plates, 5- monocells
Fig. 2 carries the pile and electrolyte inside flow passage structure of false battery.6- vacation batteries
Embodiment
Comparative example 1：
The flow passage structure of conventional pile is as shown in figure 1, pile and electrolyte inside flow passage structure such as Fig. 2 with false battery
It is shown.The false battery of a section is respectively arranged in wherein Fig. 2 between the two ends end plate and insulation board of pile.Ion exchange in false battery
Film is replaced by insulation board.
As shown in Figure 2, the anode electrolyte of the pile with false battery passes through anode electrolyte import common line stream
Enter pile, passed through after flowing into the positive pole per batteries by the entrance branch pipeline on every section anode electrode frame afterwards by outlet branches
Pipeline flows out electrode frame, imports anode electrolyte outlet common line outflow pile.Electrolyte liquid is as the same.All lists in pile
Battery is in parallel in fluid path.Because false battery is arranged between end plate and collector plate on circuit, and it is connected with collector plate insulation,
Thus it is not counted in whole pile voltage.But still flow both positive and negative polarity electrolyte in false battery in both positive and negative polarity, therefore can be with
As the open-circuit voltage of SOC battery monitor systems, the piping installation of the extra setting SOC batteries on system pipeline, section are eliminated
Save cost and simplify system.
Such as Fig. 1, conventional pile is formed by 8 section cells in series, electrode area 900cm2, test current density 80mA/cm2,
Pile charge cutoff voltage 12.4V, discharge cut-off voltage 8V.Pile charging total voltage is recorded in test process to reach 12V and put
When electric total voltage reaches 9.6V, the single-unit voltage data of each monocell.Such as Fig. 2, the pile of false battery is installed by the single electricity of 10 sections
Pond is in series, and is formed in circuit connection by 8 section cells in series.Electrode area and test condition and the complete phase of conventional pile
Together.Table 1 below is the gathered data of univoltage and the efficiency value of pile.
The univoltage gathered data of the conventional pile of table 1 and the pile with false battery
As shown in table 1, the pile with false battery compares conventional pile, and the extreme difference of univoltage drops to from 47mV during charging
13mV, the extreme difference of univoltage drops to 10mV from 40mV during electric discharge.The uniformity of univoltage is significantly improved.False battery is shown simultaneously
Open-circuit voltage is 1.412V (charging) and 1.264V (electric discharge).In efficiency, the voltage one of the pile discharge and recharge with false battery
Cause, be charged and discharged state completely, therefore voltage efficiency is higher than conventional about 1.2 percentage points of pile, electrolyte utilization rate is also omited
There is rise.
Claims (3)
1. a kind of pile of redox flow batteries, by pile bottom plate, lower insulation plate, lower header plate, 1 section monocell or 2
More than section overlapped assembled successively by the monocell at bipolar plates interval, upper collector plate, upper insulation plate and pile upper head plate, upper end
Tensed between plate and bottom plate by screw rod and nut and apply assembling pressure；Wherein monocell is by positive pole sealing gasket, positive pole electricity
Pole frame, the positive electrode in embedded electrode frame, ion-conductive membranes, the negative electrode in embedded electrode frame, negative electrode frame and negative pole are close
Packing overlaps composition successively；
It is characterized in that：
Saved more than monocell or 2 sections between bipolar plates or insulation board provided with insulation board, 1 between pile bottom plate and lower insulation plate
Every monocell, form the pile bottom plate, insulation board, monocell and the lower insulation plate structure that overlap successively；And/or, in pile
Between upper head plate and upper insulation plate provided with 1 section monocell or 2 section more than by bipolar plates or insulation board interval monocell, formed according to
Pile upper head plate, insulation board, monocell and the upper insulation plate structure of secondary overlapping；
Monocell fluid path in pile is in parallel, and the monocell circuit string between lower insulation plate and upper insulation plate is located in pile
Connection.
2. according to pile described in claim 1, it is characterised in that：
The amberplex in monocell between pile bottom plate and lower insulation plate can be changed with insulation board；And/or, in electricity
The amberplex in monocell between heap upper head plate and upper insulation plate can be changed with insulation board.
3. according to pile described in claim 1, it is characterised in that：It is above-mentioned be between pile bottom plate and lower insulation plate, and/or
Monocell between pile upper head plate and upper insulation plate can as system SOC batteries, monitor open-circuit voltage, eliminate in system
The SOC batteries and pipeline additionally set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621307307.7U CN206349448U (en) | 2016-12-01 | 2016-12-01 | A kind of pile of redox flow batteries |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621307307.7U CN206349448U (en) | 2016-12-01 | 2016-12-01 | A kind of pile of redox flow batteries |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206349448U true CN206349448U (en) | 2017-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621307307.7U Active CN206349448U (en) | 2016-12-01 | 2016-12-01 | A kind of pile of redox flow batteries |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111916788A (en) * | 2020-08-14 | 2020-11-10 | 贵州梅岭电源有限公司 | Fuel cell heat balance electric pile |
| CN114976294A (en) * | 2022-06-07 | 2022-08-30 | 辽宁大学 | Stacked water system high-voltage button battery and preparation method thereof |
-
2016
- 2016-12-01 CN CN201621307307.7U patent/CN206349448U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111916788A (en) * | 2020-08-14 | 2020-11-10 | 贵州梅岭电源有限公司 | Fuel cell heat balance electric pile |
| CN114976294A (en) * | 2022-06-07 | 2022-08-30 | 辽宁大学 | Stacked water system high-voltage button battery and preparation method thereof |
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