CN206225462U - A kind of electrode frame structure of flow cell pile - Google Patents
A kind of electrode frame structure of flow cell pile Download PDFInfo
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- CN206225462U CN206225462U CN201621069583.4U CN201621069583U CN206225462U CN 206225462 U CN206225462 U CN 206225462U CN 201621069583 U CN201621069583 U CN 201621069583U CN 206225462 U CN206225462 U CN 206225462U
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- electrolyte
- sprue
- cavity
- electrode frame
- electrode
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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 a kind of electrode frame structure of flow cell pile, in the supplement runner that electrolyte is set on rectangular flat, one end of electrolyte supplement runner is connected with the through hole of electrolyte inlet, the other end is connected with the cavity that can house electrode, the distance that supplement runner is connected between place and inlet channel with cavity is 1/6A to 5/6A, and the distance that supplement runner is connected between place and outlet flow with cavity is 1/6A to 5/6A.Electrode frame structure of the present utility model, can greatly improve the concentration distribution in electrode, improve electrolyte total concentration, reduce concentration gradient, and then reduce polarization, improve battery performance.
Description
Technical field
The utility model is related to flow battery technology field, more particularly to electrode of liquid flow cell mount structure.
Background technology
The energy is the important leverage of national economy sustainable development and national security.With expanding economy, the energy is needed
Asking increasingly increases, and a large amount of consumption of fossil energy cause environmental pressure to become increasingly conspicuous.Therefore, on a large scale using renewable energy
Source, realizes grand strategy of the energy variation as countries in the world energy security and sustainable development.It is reported that German 2010
Ratio of the regenerative resource in whole energy supply has reached 17%, and 35% is up to the year two thousand twenty, and the year two thousand thirty will reach
To 50%, the year two thousand fifty is up to 80%.The Chinese government announces that, to the year two thousand twenty, China's regenerative resource is in whole energy to the world
Proportion is up to 15% in the consumption of source, wherein wind-powered electricity generation, the installed capacity of solar power generation will respectively reach 1.5 hundred million kW and
20000000 kW.Therefore, regenerative resource progressively will gradually switch to the leading energy from supplementary energy.American economist, economy become
Gesture foundation chairman Jeremy-Jeremy Rifkin (Jeremy Rifkin) proposes new energy and Internet technology is integrated as feature
" the third time industrial revolution " viewpoint on the horizon, and energy storage technology is the critical bottleneck technology of the third time industrial revolution.Can
Renewable source of energy generation has obvious discontinuous, unstable and uncontrollability feature.The large-scale grid connection application of renewable generating,
The frequency stability and voltage stability of electric power will be influenceed, great punching is produced to the safe and stable of power system, economical operation
Hit.Extensive high-efficiency energy-storage technology is to realize the key technology that the renewable energy power generation scale such as wind energy, solar energy is utilized,
It is to build intelligent grid, improves the power network core technology urgently to be resolved hurrily to discontinuity, unstability generating compatibility.Development
Extensive high-efficiency energy-storage technology is to realizing national energy-saving emission reduction targets, and the popularization and application of regenerative resource, propulsion energy resource structure is more
Unitization is significant.Flow battery receives extensive concern as a kind of mode of chemical energy storage, in crowd all over the world
Many demonstrative projects are in commercialized critical stage it is stated that flow battery moves towards market from laboratory.
Flow battery, such as all-vanadium flow battery, with safe, good stability, efficiency high, long lifespan, environment-friendly
The advantages of, one of first-selection as extensive high-efficiency energy-storage device.The electrolyte of flow battery is present in the outside of pile, uses
When via circulating pump flow into electrode participate in electrochemical reaction.Therefore it is easy to produce very big concentration ladder on the electrode of large area
Degree, in turn results in polarization increase, and battery performance declines, reliability reduction, the flimsy drawback of battery material.So how to reduce
Concentration gradient in electrode zone, it is important research topic that high concentration and uniformity are kept as far as possible.
Utility model content
In order to solve the above technical problems, the utility model proposes a kind of electrode frame structure of flow cell pile, the electrode
Supplement runner is provided with frame, the concentration gradient in electrode zone can be reduced.
To reach above-mentioned purpose, the technical solution adopted in the utility model is：
A kind of electrode frame of redox flow batteries, electrode frame is flat board, including is disposed in proximity to electrode frame edge
4 through holes, go out respectively as catholyte import, catholyte outlet, anolyte import, anolyte
Mouthful, in rectangular flat be provided centrally with hollow out, the cavity of electrode can be housed, it includes：In in electrode frame, in negative electrode
The through hole of electrolyte inlet and catholyte outlet is respectively equipped with the import sprue and outlet master being connected between cavity
Passage；Or, in electrode frame, the through hole exported in anolyte import and anolyte is respectively equipped with the phase between cavity
The import sprue and outlet sprue of connection；The distance between import sprue and outlet sprue are A；
In the supplement runner that electrolyte is set on rectangular flat, one end of electrolyte supplement runner is logical with electrolyte inlet
Hole be connected, the other end is connected with the cavity that can house electrode, supplement runner be connected with cavity between place and inlet channel away from
From being 1/6A to 5/6A, the distance that supplement runner is connected between place and outlet flow with cavity is 1/6A to 5/6A.
Described electrode frame electrode frame is rectangular flat, and the edge near rectangular flat surrounding is provided with 2 conducts
The through hole of electrolyte inlet and 2 through holes as electrolyte outlet, go out respectively as catholyte import, catholyte
Mouth, anolyte import, anolyte outlet；In rectangular flat be provided centrally with hollow out, electrode can be housed
Square cavity.
Sprue is flowed into electrolyte is provided with rectangular flat, electrolyte flows into one end and the electrolyte inlet of sprue
Through hole be connected, the other end is connected at a line B of square cavity with cavity；
In electrolyte outflow sprue is provided with rectangular flat, electrolyte flows out one end of sprue and can house electrode
Cavity be connected, the other end is connected at the Article 2 side C of square cavity with cavity；
In the supplement runner that electrolyte is set on rectangular flat, one end of electrolyte supplement runner is logical with electrolyte inlet
Hole is connected, and the cavity of the Article 3 of the other end and square cavity in D and/or Article 4 at F is connected；
A line B and Article 2 are when C is two articles relatively be parallel to each other；Article 3 is in D and Article 4 with first
B is perpendicular on bar side.
Electrolyte in above-mentioned electrode frame flows into sprue by the electrolyte inlet through hole on rectangular flat through electrolyte
In the carbon felt electrode that inflow is placed at cavity, electrolyte outlet is flowed out to via electrolyte outflow sprue again after flowing through carbon felt
Through hole；Meanwhile, electrolyte also flows into electrode local location by electrolyte inlet through hole through electrolyte supplement runner, common afterwards to converge
Electrode frame is flowed out by the through hole of electrolyte outlet to electrolyte outlet sprue.
The supplement runner set in described electrode frame can be one or more than two.
The sectional area sum that supplement runner in described electrode frame flows into sprue with electrolyte flows out equal to electrolyte
The sectional area of sprue.
Cover plate is provided with supplement runner and sprue in the electrode frame, prevents sealing gasket from blocking up runner when compressing
Plug.
The material of the framework is polyethylene, polypropylene, polyvinyl chloride or ABS.
The flow battery electrode frame structure that the utility model is provided, greatly improves the concentration distribution in electrode, carries
Electrolyte total concentration high, reduces concentration gradient, and then reduces polarization, improves flow battery combination property.
Brief description of the drawings
Fig. 1 conventional electrodes mount structures.
Electrode frame structure of Fig. 2 the utility model with supplement runner.
Specific embodiment
Comparative example 1
In pile shown in electrode frame structure Fig. 1 of monocell.Electrode frame is flat board, is provided with as anolyte on flat board
Liquid entrance, anode electrolyte outlet, electrolyte liquid opening or electrolyte liquid entrance, anode electrolyte outlet, positive pole
Four through holes in electrolyte circulation hole.The engraved structure of content electrode is provided with the flat board of electrode frame, for placing porous electricity
Pole.The entrance of electrolyte is connected with the side of porous electrode by the inflow sprue being arranged on flat board, and electrolyte goes out
Mouth is connected with the opposite side of porous electrode by the outflow sprue being arranged on flat board.Distance at electrode and flow passage
It is A.Electrode frame as a pole of battery operationally play a part of tissue electrolyte flow and support electrode, electrolyte via
Electrolyte entrance through hole, by flow into sprue flow into electrode in, via electrolyte outflow sprue flow into electrolyte outlet
Through hole.Receptacle material is PVC.
Electrode area：1050cm2
Monocell number：10 sections
Current density：80mA/cm2, charge cutoff voltage 15.5V, discharge cut-off voltage 10V.
Pile charging/discharging voltage efficiency 80.1%, coulombic efficiency 94.7%, energy efficiency 75.6%
Embodiment 1
In pile shown in electrode frame structure Fig. 2 of monocell.
2 supplement runners of electrolyte are provided with electrode frame flat board in embodiment 1, electrolyte supplements one end of runner
It is connected with the through hole of electrolyte entrance, the other end is connected with the cavity that can house electrode, 2 supplement runners are connected with cavity
Distance between place and inlet channel is 1/3A, and the distance that 2 supplement runners are connected between place and outlet flow with cavity is equal
It is 1/3A.
Electrolyte can flow into supplement runner from electrolyte inlet through hole, be set at the low position of concentration of electrolyte on the electrode
The outlet for putting supplement runner is connected with electrode so that high concentration electrolyte can add to the low position of concentration of electrolyte.
Electrode area：1050cm2
Monocell number：10 sections
Current density：80mA/cm2, charge cutoff voltage 15.5V, discharge cut-off voltage 10V.
Table 1：Battery performance is contrasted
| Pile sequence number | Coulombic efficiency % | Voltage efficiency % | Energy efficiency % |
| The pile of comparative example 1 | 94.7 | 80.1 | 75.6 |
| The pile of embodiment 1 | 95.3 | 84.2 | 80.2 |
Contrasted by battery performance and can be seen that, using the pile of electrode frame of the present utility model in voltage efficiency and energy
Be substantially better than on amount efficiency do not contain supplement runner Performance data, illustrate because concentration gradient greatly caused by concentration polarization it is fine
Suppression, Performance data improves significantly.
Claims (8)
1. a kind of electrode frame structure of flow cell pile, electrode frame is flat board, including be disposed in proximity to electrode frame edge 4
Individual through hole, exports respectively as catholyte import, catholyte outlet, anolyte import, anolyte, in
Flat board be provided centrally with hollow out, the cavity of electrode can be housed, it is characterised in that：
In in electrode frame, the through hole exported in catholyte import and catholyte is respectively equipped with and is connected between cavity
Import sprue and outlet main channel；Or, in electrode frame, in the through hole that anolyte import and anolyte are exported
Place is respectively equipped with the import sprue and outlet sprue being connected between cavity；Between import sprue and outlet sprue
Distance is A；
In the supplement runner that electrolyte is set on flat board, one end of electrolyte supplement runner is connected with the through hole of electrolyte inlet,
The other end is connected with the cavity that can house electrode, and the distance that supplement runner is connected between place and import sprue with cavity is 1/
6A to 5/6A, the distance that supplement runner is connected between place and outlet sprue with cavity is 1/6A to 5/6A.
2. electrode frame structure as claimed in claim 1, it is characterised in that：
Electrode frame is rectangular flat, and the edge near rectangular flat surrounding is provided with 2 through holes as electrolyte inlet
With 2 through holes as electrolyte outlet, enter respectively as catholyte import, catholyte outlet, anolyte
Mouth, anolyte outlet；In rectangular flat be provided centrally with hollow out, the square cavity of electrode can be housed；
Sprue i.e. import sprue is flowed into electrolyte is provided with rectangular flat, electrolyte flows into one end and the electricity of sprue
The through hole for solving liquid import is connected, and the other end is connected at a line B of square cavity with cavity；
Export sprue in electrolyte outflow sprue is provided with rectangular flat, electrolyte flow out one end of sprue with can
The cavity of accommodating electrode is connected, and the other end is connected at the Article 2 side C of square cavity with cavity；
In the supplement runner that electrolyte is set on rectangular flat, electrolyte supplements one end of runner and the through hole phase of electrolyte inlet
Even, cavity of the Article 3 of the other end and square cavity in D and/or Article 4 at F is connected；
A line B and Article 2 are when C is two articles relatively be parallel to each other；Article 3 in D and Article 4 F with first
Side B is perpendicular.
3. electrode frame structure as claimed in claim 2, it is characterised in that：
Electrolyte flows into sprue and flows into the carbon felt for being placed in cavity by the electrolyte inlet through hole on rectangular flat through electrolyte
In electrode, the through hole that sprue flows out to electrolyte outlet is flowed out via electrolyte again after flowing through carbon felt；Meanwhile, electrolyte also by
Electrolyte inlet through hole through electrolyte supplement runner flow into electrode local location, after converge to jointly electrolyte outlet sprue lead to
Cross the through hole outflow electrode frame of electrolyte outlet.
4. electrode frame structure as claimed in claim 1 or 2, it is characterised in that：The supplement runner of setting can be in electrode frame
One or more than two.
5. electrode frame structure as claimed in claim 1 or 2, it is characterised in that：Supplement runner flows into sprue with electrolyte
Sectional area sum is equal to the sectional area that electrolyte flows out sprue.
6. electrode frame structure as claimed in claim 1 or 2, it is characterised in that：Supplement runner and main flow in the electrode frame
Cover plate is provided with road, runner is blocked when sealing gasket is compressed when preventing assembled battery pile.
7. electrode frame structure as claimed in claim 1 or 2, it is characterised in that：The material of the electrode frame is polyethylene, poly- third
Alkene, polyvinyl chloride or ABS.
8. electrode frame structure as claimed in claim 1, it is characterised in that：
Electrode frame is rectangular flat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621069583.4U CN206225462U (en) | 2016-09-21 | 2016-09-21 | A kind of electrode frame structure of flow cell pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621069583.4U CN206225462U (en) | 2016-09-21 | 2016-09-21 | A kind of electrode frame structure of flow cell pile |
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| Publication Number | Publication Date |
|---|---|
| CN206225462U true CN206225462U (en) | 2017-06-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621069583.4U Withdrawn - After Issue CN206225462U (en) | 2016-09-21 | 2016-09-21 | A kind of electrode frame structure of flow cell pile |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107845823A (en) * | 2016-09-21 | 2018-03-27 | 中国科学院大连化学物理研究所 | A kind of electrode frame structure of flow cell pile |
| CN109841866A (en) * | 2017-11-28 | 2019-06-04 | 中国科学院大连化学物理研究所 | A kind of liquid flow frame suitable for trapezoidal liquid flow battery |
| WO2019206119A1 (en) | 2018-04-27 | 2019-10-31 | 江苏泛宇能源有限公司 | Stack frame for flow battery |
| CN110867594A (en) * | 2018-08-27 | 2020-03-06 | 大连融科储能装备有限公司 | Flow field structure of flow battery |
| CN110970636A (en) * | 2018-09-29 | 2020-04-07 | 中国科学院大连化学物理研究所 | Application of cathode electrode frame in zinc-bromine single flow battery |
-
2016
- 2016-09-21 CN CN201621069583.4U patent/CN206225462U/en not_active Withdrawn - After Issue
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107845823A (en) * | 2016-09-21 | 2018-03-27 | 中国科学院大连化学物理研究所 | A kind of electrode frame structure of flow cell pile |
| CN107845823B (en) * | 2016-09-21 | 2023-08-22 | 中国科学院大连化学物理研究所 | Electrode frame structure of flow battery pile |
| CN109841866A (en) * | 2017-11-28 | 2019-06-04 | 中国科学院大连化学物理研究所 | A kind of liquid flow frame suitable for trapezoidal liquid flow battery |
| CN109841866B (en) * | 2017-11-28 | 2024-04-02 | 中国科学院大连化学物理研究所 | Liquid flow frame suitable for trapezoid liquid flow battery |
| WO2019206119A1 (en) | 2018-04-27 | 2019-10-31 | 江苏泛宇能源有限公司 | Stack frame for flow battery |
| CN110867594A (en) * | 2018-08-27 | 2020-03-06 | 大连融科储能装备有限公司 | Flow field structure of flow battery |
| CN110867594B (en) * | 2018-08-27 | 2021-10-26 | 大连融科储能装备有限公司 | Flow field structure of flow battery |
| CN110970636A (en) * | 2018-09-29 | 2020-04-07 | 中国科学院大连化学物理研究所 | Application of cathode electrode frame in zinc-bromine single flow battery |
| CN110970636B (en) * | 2018-09-29 | 2020-11-27 | 中国科学院大连化学物理研究所 | Application of cathode electrode frame in zinc-bromine single flow battery |
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Legal Events
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170606 Effective date of abandoning: 20230822 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20170606 Effective date of abandoning: 20230822 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |