CN205177936U - Contain bipolar plate for redox flow battery who deepens runner - Google Patents
Contain bipolar plate for redox flow battery who deepens runner Download PDFInfo
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- CN205177936U CN205177936U CN201521029542.8U CN201521029542U CN205177936U CN 205177936 U CN205177936 U CN 205177936U CN 201521029542 U CN201521029542 U CN 201521029542U CN 205177936 U CN205177936 U CN 205177936U
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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
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Abstract
The utility model relates to a contain bipolar plate for redox flow battery who deepens runner, anodal electrolyte runner and negative pole electrolysis liquid stream say to the even runner that changes of the degree of depth, and the runner degree of depth evenly reduces from positive pole / negative pole electrolysis liquid inlet to positive pole / negative pole electrolysis liquid liquid outlet orientation, is close to positive pole / negative pole electrolysis liquid inlet side flow promptly and says that the degree of depth is great, is close to positive pole / negative pole electrolysis liquid liquid outlet side flow and says that the degree of depth is less, with general liquid stream frame combination, can realize that electrolyte increases along advancing liquid outlet orientation speed gradually to concentration polarization that the balanced concentration gradient of velocity gradient arouses reduces battery concentration polarization resistance to the influence of battery performance, improves voltage efficiency, electrolyte utilization ratio and the power density of battery.
Description
Technical field
The utility model relates to flow battery field, particularly a kind of flow battery bipolar plate structure containing deepening runner.
Background technology
Flow battery, be adopt the vanadium ion solution of different valence state as both positive and negative polarity electrolyte, drive electrolyte to circulate between fluid reservoir and pile by external pump, there is the battery that redox reaction realizes charge and discharge process in electrolyte in pile.Flow battery is made up of pipe-line systems such as pile, electrolyte and pumps, and pile comprises ionic conduction barrier film, liquid flow frame, electrode, bipolar plates and collector plate etc.Pile cell is centered by ionic conduction barrier film, and two ends are followed successively by: electrode and liquid flow frame, bipolar plate structure.Between ionic conduction barrier film and liquid flow frame, between liquid flow frame and bipolar plates, there is potted component.Several grades or several 10 grades of cells are clamped between two stainless steel end plates, form a pile through filter press pressuring action.Electrolyte circulates between fluid reservoir and pile, wherein must through liquid flow frame, liquid flow frame and the electrode be placed on wherein thereof form the flow channel of electrolyte, and its design feature directly affects the flow distribution of electrolyte, and then affects stability and the battery performance of flow battery.
At present, general liquid flow frame is provided with even depth electrode putting groove, electrolyte is basically identical along liquid in-out mouth direction flowing velocity, but along with the carrying out of reaction, reduce gradually along liquid in-out mouth orienting response substrate concentration, usually make to increase gradually along the direction concentration polarization of liquid in-out mouth, especially under discharge and recharge latter stage or high current density, impact is remarkable, cause cell resistance comparatively large, voltage efficiency and electrolyte utilance reduce, and power density promotes limited.
Utility model content
The purpose of this utility model is, for prior art Problems existing, for overcoming defect of the prior art, propose and study a kind of flow battery bipolar plates containing deepening runner, it is by carrying out scientific and reasonable design to bipolar plate structure, combine with general liquid flow frame, electrolyte can be realized increase gradually along liquid in-out mouth direction speed, the concentration polarization caused with velocity gradient equilibrium concentration gradient is on the impact of battery performance, reduce battery concentration polarization resistance, improve the voltage efficiency of battery, electrolyte utilance and power density.
To achieve these goals, the technical solution adopted in the utility model:
A kind of flow battery bipolar plates containing deepening runner, for the bipolar plates be applied in the middle of pile, two side surfaces of bipolar plates are respectively equipped with symmetrical runner, side is the anode electrolyte runner with anode electrolyte inlet and anode electrolyte liquid outlet, and opposite side is the electrolyte liquid runner with electrolyte liquid inlet and electrolyte liquid liquid outlet; Wherein, anode electrolyte runner is the runner of uniform depth change, flow channel depth evenly reduces to anode electrolyte liquid outlet direction from anode electrolyte inlet, namely comparatively large near the anode electrolyte inlet side runner degree of depth, less near the anode electrolyte liquid outlet side runner degree of depth; Electrolyte liquid runner is the runner of uniform depth change, flow channel depth evenly reduces to electrolyte liquid liquid outlet direction from negative pole electrolyte inlet, namely comparatively large near the electrolyte liquid inlet side runner degree of depth, less near the electrolyte liquid liquid outlet side runner degree of depth; The anode electrolyte inlet of bipolar plates two side becomes face symmetrical with electrolyte liquid liquid outlet; The anode electrolyte liquid outlet of bipolar plates two side becomes face symmetrical with electrolyte liquid inlet; For first bipolar plates being applied to pile, a side surface of bipolar plates is provided with runner, and it is the anode electrolyte runner with anode electrolyte inlet and anode electrolyte liquid outlet; Anode electrolyte runner is the runner of uniform depth change, flow channel depth evenly reduces to anode electrolyte liquid outlet direction from anode electrolyte inlet, namely comparatively large near the anode electrolyte inlet side runner degree of depth, less near the anode electrolyte liquid outlet side runner degree of depth; For last bipolar plates being applied to pile, a side surface of bipolar plates is provided with runner, and it is the electrolyte liquid runner with electrolyte liquid inlet and electrolyte liquid liquid outlet; Electrolyte liquid runner is the runner of uniform depth change, flow channel depth evenly reduces to electrolyte liquid liquid outlet direction from negative pole electrolyte inlet, namely comparatively large near the electrolyte liquid inlet side runner degree of depth, less near the electrolyte liquid liquid outlet side runner degree of depth.
This containing deepening on the flow battery bipolar plate structure of runner, the flow channel depth near anode electrolyte liquid outlet place is 0.1-2mm, near anode electrolyte inlet side runner degree of depth 0.5-5mm; Flow channel depth near electrolyte liquid liquid outlet place is 0.1-2mm, near electrolyte liquid inlet side runner degree of depth 0.5-5mm.This containing deepen on the bipolar plate structure of runner deepen runner and liquid flow frame combines, form the flow channel of electrolyte in flow battery.
Accompanying drawing explanation
Fig. 1: the bipolar plates in the middle of flow cell pile;
Fig. 2: flow cell pile first bipolar plates;
Fig. 3: last bipolar plates of flow cell pile;
In figure: 1-positive pole inlet, 2-negative pole liquid outlet, 3-anode electrolyte runner, 4-positive pole liquid outlet, 5-negative pole inlet, 6-electrolyte liquid runner, 7-bipolar plates
Embodiment
Thickness containing the flow battery bipolar plates 7 deepening runner is 10mm, length is 80mm, width is 60mm, close anode electrolyte inlet 1 or electrolyte liquid inlet 5 side runner 3 or 6 degree of depth are 4mm, are 2mm near anode electrolyte liquid outlet 4 or electrolyte liquid liquid outlet 2 side runner 3 or 6 degree of depth.
Adopt this containing deepen runner flow battery bipolar plates assembling all-vanadium flow battery pile at 80mAcm
-2the pile energy efficiency of testing under condition is 83.25%, adds about 3% than adopting the pile efficiency of the conventional bipolar plate structure assembling without deepening runner.
Claims (5)
1. one kind containing the flow battery bipolar plates deepening runner, for the bipolar plates be applied in the middle of pile, two side surfaces of bipolar plates are respectively equipped with symmetrical runner, side is the anode electrolyte runner with anode electrolyte inlet and anode electrolyte liquid outlet, and opposite side is the electrolyte liquid runner with electrolyte liquid inlet and electrolyte liquid liquid outlet;
For first bipolar plates being applied to pile, a side surface of bipolar plates is provided with runner, and it is the anode electrolyte runner with anode electrolyte inlet and anode electrolyte liquid outlet;
For last bipolar plates being applied to pile, a side surface of bipolar plates is provided with runner, and it is the electrolyte liquid runner with electrolyte liquid inlet and electrolyte liquid liquid outlet;
It is characterized in that: anode electrolyte runner is the runner of uniform depth change, flow channel depth evenly reduces to anode electrolyte liquid outlet direction from anode electrolyte inlet, namely comparatively large near the anode electrolyte inlet side runner degree of depth, less near the anode electrolyte liquid outlet side runner degree of depth; Electrolyte liquid runner is the runner of uniform depth change, flow channel depth evenly reduces to electrolyte liquid liquid outlet direction from negative pole electrolyte inlet, namely comparatively large near the electrolyte liquid inlet side runner degree of depth, less near the electrolyte liquid liquid outlet side runner degree of depth;
The anode electrolyte inlet of middle bipolar plates two side becomes face symmetrical with electrolyte liquid liquid outlet;
The anode electrolyte liquid outlet of middle bipolar plates two side becomes face symmetrical with electrolyte liquid inlet.
2. a kind of flow battery bipolar plates containing deepening runner according to claim 1, it is characterized in that: for first bipolar plates being applied to pile, anode electrolyte runner is the runner of uniform depth change, flow channel depth evenly reduces to anode electrolyte liquid outlet direction from anode electrolyte inlet, namely comparatively large near the anode electrolyte inlet side runner degree of depth, less near the anode electrolyte liquid outlet side runner degree of depth;
For last bipolar plates being applied to pile, electrolyte liquid runner is the runner of uniform depth change, flow channel depth evenly reduces to electrolyte liquid liquid outlet direction from negative pole electrolyte inlet, namely comparatively large near the electrolyte liquid inlet side runner degree of depth, less near the electrolyte liquid liquid outlet side runner degree of depth.
3. a kind of flow battery bipolar plates containing deepening runner according to claim 1, is characterized in that: containing deepen on the bipolar plate structure of runner deepen runner and liquid flow frame combines, form the flow channel of electrolyte in flow battery.
4. a kind of flow battery bipolar plates containing deepening runner according to claim 1, it is characterized in that: anode electrolyte runner is the runner of uniform depth change, flow channel depth evenly reduces to anode electrolyte liquid outlet direction from anode electrolyte inlet, namely larger near the anode electrolyte inlet side runner degree of depth, less near the anode electrolyte liquid outlet side runner degree of depth, flow channel depth near anode electrolyte liquid outlet place is 0.1-2mm, near anode electrolyte inlet side runner degree of depth 0.5-5mm.
5. a kind of flow battery bipolar plates containing deepening runner according to claim 1, it is characterized in that: electrolyte liquid runner is the runner of uniform depth change, flow channel depth evenly reduces to electrolyte liquid liquid outlet direction from negative pole electrolyte inlet, namely larger near the electrolyte liquid inlet side runner degree of depth, less near the electrolyte liquid liquid outlet side runner degree of depth, flow channel depth near electrolyte liquid liquid outlet place is 0.1-2mm, near electrolyte liquid inlet side runner degree of depth 0.5-5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521029542.8U CN205177936U (en) | 2015-12-12 | 2015-12-12 | Contain bipolar plate for redox flow battery who deepens runner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521029542.8U CN205177936U (en) | 2015-12-12 | 2015-12-12 | Contain bipolar plate for redox flow battery who deepens runner |
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| Publication Number | Publication Date |
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| CN205177936U true CN205177936U (en) | 2016-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201521029542.8U Active CN205177936U (en) | 2015-12-12 | 2015-12-12 | Contain bipolar plate for redox flow battery who deepens runner |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106920985A (en) * | 2017-03-31 | 2017-07-04 | 大连融科储能技术发展有限公司 | A kind of flow cell pile and electrolyte is set to be evenly distributed in each batteries in the method for improving battery performance |
| CN108075152A (en) * | 2016-11-16 | 2018-05-25 | 住友电气工业株式会社 | Unit framework, stack of cells and redox flow batteries |
-
2015
- 2015-12-12 CN CN201521029542.8U patent/CN205177936U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108075152A (en) * | 2016-11-16 | 2018-05-25 | 住友电气工业株式会社 | Unit framework, stack of cells and redox flow batteries |
| CN106920985A (en) * | 2017-03-31 | 2017-07-04 | 大连融科储能技术发展有限公司 | A kind of flow cell pile and electrolyte is set to be evenly distributed in each batteries in the method for improving battery performance |
| CN106920985B (en) * | 2017-03-31 | 2019-06-11 | 大连融科储能技术发展有限公司 | A kind of flow cell pile and electrolyte is made to be evenly distributed in each batteries in the method for improving battery performance |
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| GR01 | Patent grant |