CN221508235U - Flow battery plate frame, single battery and battery stack in horizontal overturning installation mode - Google Patents
Flow battery plate frame, single battery and battery stack in horizontal overturning installation mode Download PDFInfo
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- CN221508235U CN221508235U CN202323130774.XU CN202323130774U CN221508235U CN 221508235 U CN221508235 U CN 221508235U CN 202323130774 U CN202323130774 U CN 202323130774U CN 221508235 U CN221508235 U CN 221508235U
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- 238000009434 installation Methods 0.000 title claims abstract description 13
- 239000003792 electrolyte Substances 0.000 claims abstract description 306
- 239000012528 membrane Substances 0.000 claims abstract description 12
- 239000006185 dispersion Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 abstract description 8
- 230000007547 defect Effects 0.000 abstract description 4
- 238000001746 injection moulding Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000007514 turning Methods 0.000 description 14
- 239000000243 solution Substances 0.000 description 4
- 238000004146 energy storage Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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 belongs to the technical field of flow batteries, and discloses a flow battery plate frame, a single battery and a battery stack in a horizontal overturning installation mode, wherein the plate frame comprises an electrolyte inlet and an electrolyte outlet and an electrode cavity, and the electrode cavity is divided into a negative electrode cavity and a positive electrode cavity through a membrane; the two sides of the electrode cavity are also provided with an anode overturning hole and a cathode overturning hole; electrolyte tanks are arranged on the upper end face and the lower end face of the plate frame, which are opposite, and the requirements are met: the electrolytic cell at the lower end surface of the plate frame horizontally rotates 180 degrees and then coincides with the electrolytic cell at the upper end surface of the plate frame; when a plurality of plate frames are stacked, the electrolyte tanks of the upper plate frame and the lower plate frame form an anode electrolyte flow channel and a cathode electrolyte flow channel; according to the utility model, the double-sided electrolyte flow channel is formed when the plurality of plate frames are stacked, the breadth is fully utilized, the area with thicker thickness is reduced, the shrinkage defect is reduced during injection molding production, the deformation of the plate frames is reduced, and the reliability of the product is improved. The utilization rate of the breadth is improved, the used materials are reduced, and the material cost is reduced.
Description
Technical Field
The utility model belongs to the technical field of flow batteries, and particularly relates to a flow battery plate frame, a single battery and a battery stack in a horizontal overturning installation mode.
Background
With the development of society and economy, environmental pressure caused by massive consumption of fossil energy is increasingly prominent, renewable energy sources such as wind energy, solar energy and the like generate electricity and are influenced by factors such as time, day, night, seasons and the like, and the renewable energy sources have obvious discontinuous/unstable and uncontrollable unstable characteristics, so that a large-scale efficient energy storage technology is highly valued, and a flow battery is recognized as the energy storage technology with the most development prospect due to the characteristics of high safety, large energy storage scale, high efficiency, long service life and the like.
A single cell is a basic component unit in a flow battery stack, and its structural form directly affects the size/power/performance of the cell.
The existing flow battery single cell structure has the following structural forms:
1. The diaphragm is taken as the center and is symmetrically distributed on two sides, and the two sides are sequentially provided with an electrode, a plate frame and a bipolar plate.
2. The plate frame is designed into an integrated form, but the plate frame cannot be fully utilized, and most of the plate frames are in a form of single-sided arrangement of flow channels, so that the plate frame is more in material use and higher in cost.
3. The double-sided runner is partially adopted, but the runner cannot be fully distributed on the plate frame, and the main reason that the double-sided runner cannot be fully distributed on the plate frame is that the sealing gasket presses the runner and cannot be sealed due to the fact that the reasonable structural layout is not available.
In summary, the existing flow battery has no reasonable structural layout, the breadth of the plate frame cannot be fully utilized, and the cost is high.
Disclosure of utility model
Aiming at the problems, the utility model provides a flow battery plate frame, a single battery and a battery stack in a horizontal overturning installation mode, which adopts the following technical scheme:
The flow battery plate frame in a horizontal overturning installation mode comprises an anode electrolyte inlet, a cathode electrolyte inlet, an anode electrolyte outlet, a cathode electrolyte outlet and an electrode cavity, wherein the electrode cavity is divided into a cathode electrode cavity and an anode electrode cavity through a membrane;
The both sides of electrode chamber still are provided with first anodal upset hole, the anodal upset hole of second, first negative pole upset hole and second negative pole upset hole and satisfy: after the plate frame horizontally rotates 180 degrees, the second positive electrode overturning hole is overlapped with the first positive electrode overturning hole, and the second negative electrode overturning hole is overlapped with the first negative electrode overturning hole;
electrolyte tanks are arranged on the upper end face and the lower end face of the plate frame, which are opposite, and the requirements are met: the electrolytic cell at the lower end surface of the plate frame horizontally rotates 180 degrees and then coincides with the electrolytic cell at the upper end surface of the plate frame;
when a plurality of plate frames are stacked, the upper plate frame above the current plate frame is horizontally rotated for 180 degrees and aligned with the current plate frame, and an electrolyte tank on the upper end surface of the current plate frame and an electrolyte tank on the lower end surface of the upper plate frame form an anode electrolyte flow channel and a cathode electrolyte channel;
the positive electrolyte flow channel is communicated with the two positive overturning holes, the positive electrode cavity, the positive electrolyte inlet and the positive electrolyte outlet of the current plate frame; the negative electrode electrolyte channel is communicated with the two negative electrode overturning holes, the negative electrode cavity, the negative electrode electrolyte inlet and the negative electrode electrolyte outlet of the upper plate frame.
Further, the plate frame is square, and the positive electrolyte inlet, the negative electrolyte inlet, the positive electrolyte outlet and the negative electrolyte outlet are respectively arranged at four corners of the plate frame.
Further, the positive electrolyte inlet and the positive electrolyte outlet are arranged along the diagonal line of the plate frame, the negative electrolyte inlet and the negative electrolyte outlet are arranged along the diagonal line of the plate frame, and the positive electrolyte inlet and the negative electrolyte inlet are respectively positioned at two ends of the long side of the plate frame.
Further, a first positive electrolyte tank, a second positive electrolyte tank, a first negative electrolyte tank, a second negative electrolyte tank, a negative dispersion runner and a negative collecting runner are arranged on the upper end face of the plate frame;
The plate frame is provided with a third positive electrode electrolyte tank, a fourth positive electrode electrolyte tank, a third negative electrode electrolyte tank, a fourth negative electrode electrolyte tank, a positive electrode dispersion flow channel and a positive electrode collecting flow channel on the lower end surface opposite to the upper end surface;
The positive electrolyte sequentially flows through a positive electrolyte inlet, the first positive electrolyte tank, the first positive overturning hole, the positive dispersing runner, the positive electrode cavity, the positive collecting runner, the second positive overturning hole, the second positive electrolyte tank and the positive electrolyte outlet;
the negative electrode electrolyte sequentially flows through a negative electrode electrolyte inlet, the third negative electrode electrolyte tank, the first negative electrode overturning hole, the negative electrode dispersing flow channel, the negative electrode cavity, the negative electrode collecting flow channel, the second negative electrode overturning hole, the fourth negative electrode electrolyte tank and the negative electrode electrolyte outlet.
Further, the third positive electrode electrolyte tank is positioned right below the first positive electrode electrolyte tank, one end of the third positive electrode electrolyte tank is communicated with the positive electrode electrolyte inlet, and the other end of the third positive electrode electrolyte tank is closed; the fourth positive electrode electrolyte tank is positioned right below the second positive electrode electrolyte tank, one end of the fourth positive electrode electrolyte tank is communicated with the positive electrode electrolyte outlet, and the other end of the fourth positive electrode electrolyte tank is closed;
The third positive electrode electrolyte tank and the second positive electrode electrolyte tank have the same structure, and the fourth positive electrode electrolyte tank and the first positive electrode electrolyte tank have the same structure.
Further, one end of the first negative electrode electrolyte tank is communicated with the negative electrode electrolyte inlet, the other end of the first negative electrode electrolyte tank is closed, and the third negative electrode electrolyte tank is positioned below the first negative electrode electrolyte tank; one end of the second negative electrode electrolyte tank is communicated with the negative electrode electrolyte outlet, the other end of the second negative electrode electrolyte tank is closed, and the fourth negative electrode electrolyte tank is positioned below the second negative electrode electrolyte tank;
the first negative electrode electrolyte tank and the fourth negative electrode electrolyte tank have the same structure, and the second negative electrode electrolyte tank and the third negative electrode electrolyte tank have the same structure.
Further, when a plurality of plate frames are stacked, a fourth positive electrode electrolyte tank on the lower end face of the upper plate frame and a first positive electrode electrolyte tank on the upper end face of the current plate frame are sealed to form a first positive electrode electrolyte flow channel, and a third positive electrode electrolyte tank on the lower end face of the upper plate frame and a second positive electrode electrolyte tank on the upper end face of the current plate frame are sealed to form a second positive electrode electrolyte flow channel;
The fourth negative electrode electrolyte tank on the lower end surface of the upper plate frame is sealed with the first negative electrode electrolyte tank on the upper end surface of the current plate frame to form a first negative electrode electrolyte flow channel, and the third negative electrode electrolyte tank on the lower end surface of the upper plate frame is sealed with the second negative electrode electrolyte tank on the upper end surface of the current plate frame to form a second negative electrode electrolyte flow channel.
Further, the positive electrode electrolyte inlet, the first positive electrode electrolyte flow channel, the first positive electrode turning hole of the current plate frame, the positive electrode dispersing flow channel of the current plate frame, the positive electrode cavity of the current plate frame, the positive electrode collecting flow channel of the current plate frame, the second positive electrode turning hole of the current plate frame, the second positive electrode electrolyte flow channel and the positive electrode electrolyte outlet are sequentially communicated;
The negative electrode electrolyte inlet, the first negative electrode electrolyte flow passage, the first negative electrode overturning hole of the upper plate frame, the negative electrode dispersing flow passage of the upper plate frame, the negative electrode cavity of the upper plate frame, the negative electrode collecting flow passage of the upper plate frame, the second positive electrode overturning hole of the upper plate frame, the second negative electrode electrolyte flow passage and the negative electrode electrolyte outlet are sequentially communicated.
The utility model also provides a flow single cell, which comprises the flow cell plate frame, the membrane, the positive electrode, the negative electrode and the bipolar plate which are horizontally turned and installed;
The membrane is arranged in an electrode cavity of the plate frame, the membrane divides the electrode cavity of the plate frame into a negative electrode cavity with an upper end face and a positive electrode cavity with a lower end face, the negative electrode is arranged in the negative electrode cavity, the positive electrode is arranged in the positive electrode cavity, and the bipolar plate is overlapped above the negative electrode.
The utility model also provides a flow battery stack, which comprises a plurality of flow single batteries, wherein when the plurality of single batteries are stacked, the single batteries above the current single battery are horizontally rotated by 180 degrees to be stacked and installed.
The utility model has the beneficial effects that:
1. according to the flow battery plate frame, the electrolyte tanks are arranged on the upper end face and the lower end face which are opposite, a double-sided electrolyte flow channel is formed when a plurality of plate frames are stacked, the breadth is fully utilized, the area with thicker thickness is reduced, the shrinkage defect is reduced during injection molding production, the deformation of the plate frames is reduced, and the reliability of products is improved.
2. The flow battery plate frame improves the breadth utilization rate, reduces the used materials, and therefore reduces the material cost.
Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model may be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 illustrates an isometric view of a flow cell plate frame in a horizontally flipped mounting format in accordance with an embodiment of the utility model;
FIG. 2 shows a schematic view of the upper end face structure of a flow cell plate frame in a horizontally flipped mounting format according to an embodiment of the utility model;
FIG. 3 illustrates a schematic view of the lower end face of a flow cell plate frame in a horizontally flipped mounting format in accordance with an embodiment of the present utility model;
Fig. 4 shows an exploded view of a stack of two flow cell plate frames in a horizontally flipped mounting format, in accordance with an embodiment of the present utility model.
In the figure: 1. an anode electrolyte inlet; 2. a negative electrode electrolyte inlet; 3. an anode electrolyte outlet; 4. a negative electrode electrolyte outlet; 5. an electrode cavity; 6. a first positive electrode turning hole; 7. a second positive electrode turning hole; 8. a first negative electrode turning hole; 9. a second negative electrode turning hole; 10. a first positive electrode electrolyte tank; 11. a second positive electrode electrolyte tank; 12. a first negative electrode electrolyte tank; 13. a second negative electrode electrolyte tank; 14. a negative electrode dispersion flow path; 15. a negative electrode collecting channel; 16. a third positive electrode electrolyte tank; 17. a fourth positive electrode electrolyte tank; 18. a third negative electrode electrolyte tank; 19. a fourth negative electrode electrolyte tank; 20. a positive electrode dispersion flow channel; 21. the positive electrode collects the flow channel.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that the terms "first," "second," and the like herein are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the application herein. In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings.
The utility model provides a flow battery plate frame in a horizontal overturning installation mode, which improves the utilization rate of the breadth of the plate frame, reduces the deformation of the plate frame, reduces the defects, reduces the use of materials and reduces the cost; and each single cell is horizontally turned over and installed, so that the complete cell stack is assembled.
As shown in fig. 1, a flow battery plate frame in a horizontal overturning installation form comprises a positive electrolyte inlet 1, a negative electrolyte inlet 2, a positive electrolyte outlet 3 and a negative electrolyte outlet 4.
For example, the plate frame is square, and the positive electrode electrolyte inlet 1, the negative electrode electrolyte inlet 2, the positive electrode electrolyte outlet 3 and the negative electrode electrolyte outlet 4 are respectively arranged at four corners of the plate frame.
It should be noted that the electrolyte inlets and outlets are the same in size, and the electrolyte outlets can be used as inlets after the plate frame rotates 180 degrees horizontally, and the inlets can be used as outlets in the same way.
As shown in fig. 1, the electrode cavity 5 is located at the center of the plate frame, and the two sides of the electrode cavity 5 are further provided with a first positive electrode turning hole 6, a second positive electrode turning hole 7, a first negative electrode turning hole 8 and a second negative electrode turning hole 9, which satisfy the following conditions: after the plate frame horizontally rotates 180 degrees, the second positive electrode overturning hole 7 is overlapped with the first positive electrode overturning hole 6, and the second negative electrode overturning hole 9 is overlapped with the first negative electrode overturning hole 8.
Electrolyte tanks are arranged on the upper end face and the lower end face of the plate frame, which are opposite, and the requirements are met: the electrolytic tank on the lower end surface of the plate frame horizontally rotates 180 degrees and then coincides with the electrolytic tank on the upper end surface of the plate frame.
As shown in fig. 4, when a plurality of the plate frames are stacked, the upper plate frame above the front plate frame is horizontally rotated by 180 degrees and aligned with the front plate frame, and then the electrolyte tank on the upper end surface of the front plate frame and the electrolyte tank on the lower end surface of the upper plate frame form an anode electrolyte flow channel and a cathode electrolyte flow channel.
The positive electrolyte flow channel is communicated with the two positive overturning holes, the positive electrode cavity 5, the positive electrolyte inlet 1 and the positive electrolyte outlet 3 of the current plate frame; the negative electrode electrolyte flow channel is communicated with the two negative electrode overturning holes of the upper plate frame, the negative electrode cavity 5, the negative electrode electrolyte inlet 2 and the negative electrode electrolyte outlet 4.
For example, the positive electrolyte inlet 1 and the positive electrolyte outlet 3 are arranged along the diagonal line of the plate frame, the negative electrolyte inlet 2 and the negative electrolyte outlet 4 are arranged along the diagonal line of the plate frame, and the positive electrolyte inlet 1 and the negative electrolyte inlet 2 are respectively positioned at two ends of the long side of the plate frame, so that the arrangement of electrolyte flow channels is facilitated.
As shown in fig. 2, for example, a first positive electrode electrolyte tank 10, a second positive electrode electrolyte tank 11, a first negative electrode electrolyte tank 12, a second negative electrode electrolyte tank 13, a negative electrode dispersion flow path 14, and a negative electrode collecting flow path 15 are provided on the upper end face of the plate frame.
As shown in fig. 3, the plate frame is provided with a third positive electrode electrolyte tank 16, a fourth positive electrode electrolyte tank 17, a third negative electrode electrolyte tank 18, a fourth negative electrode electrolyte tank 19, a positive electrode dispersion flow path 20, and a positive electrode collecting flow path 21 on a lower end surface opposite to the upper end surface.
For example, the electrode cavity 5 is square, the electrode cavity 5 is provided in the middle of the plate frame, and the electrode cavity 5 is divided by a film to form a negative electrode cavity 5 of the upper end face and a positive electrode cavity 5 of the lower end face.
Wherein, first positive pole upset hole 6 and first negative pole upset hole 8 are located the one side of electrode chamber 5, and second positive pole upset hole 7 and second negative pole upset hole 9 are located the opposite side of electrode chamber 5.
One end of the cathode dispersion runner 14 is communicated with the first cathode overturning hole 8, the other end of the cathode dispersion runner 14 is communicated with one end of the cathode collecting runner 15 to form an electrolyte runner surrounding the cathode electrode cavity 5, and the other end of the cathode collecting runner 15 is communicated with the second cathode overturning hole 9.
One end of the positive electrode dispersing flow channel 20 is communicated with the first positive electrode overturning hole 6, the other end of the positive electrode dispersing flow channel 20 is communicated with one end of the positive electrode collecting flow channel 21 to form an electrolyte flow channel surrounding the positive electrode cavity 5, and the other end of the positive electrode collecting flow channel 21 is communicated with the second positive electrode overturning hole 7.
As shown in fig. 2 and 3, the positive electrode electrolyte flows through the positive electrode electrolyte inlet 1, the first positive electrode electrolyte tank 10, the first positive electrode turning hole 6, the positive electrode dispersion flow passage 20, the positive electrode chamber 5, the positive electrode collecting flow passage 21, the second positive electrode turning hole 7, the second positive electrode electrolyte tank 11, and the positive electrode electrolyte outlet 3 in this order.
As shown in fig. 2 and 3, the anode electrolyte flows through the anode electrolyte inlet 2, the third anode electrolyte tank 18, the first anode turning hole 8, the anode dispersion flow passage 14, the anode electrode chamber 5, the anode collecting flow passage 15, the second anode turning hole 9, the fourth anode electrolyte tank 19, and the anode electrolyte outlet 4 in this order.
As shown in fig. 3, the third positive electrode electrolyte tank 16 is located right below the first positive electrode electrolyte tank 10, and one end of the third positive electrode electrolyte tank 16 is communicated with the positive electrode electrolyte inlet 1, and the other end is closed; the fourth positive electrode electrolyte tank 17 is located right below the second positive electrode electrolyte tank 11, and one end of the fourth positive electrode electrolyte tank 17 is communicated with the positive electrode electrolyte outlet 3, and the other end is closed.
The third positive electrode electrolyte tank 16 and the second positive electrode electrolyte tank 11 have the same structure, and the fourth positive electrode electrolyte tank 17 and the first positive electrode electrolyte tank 10 have the same structure.
As shown in fig. 2, one end of the first negative electrode electrolyte tank 12 is communicated with the negative electrode electrolyte inlet 2, the other end is closed, and the third negative electrode electrolyte tank 18 is positioned below the first negative electrode electrolyte tank 12; one end of the second negative electrode electrolyte tank 13 is communicated with the negative electrode electrolyte outlet 4, the other end is closed, and the fourth negative electrode electrolyte tank 19 is positioned below the second negative electrode electrolyte tank 13.
Wherein the first negative electrode electrolyte tank 12 and the fourth negative electrode electrolyte tank 19 have the same structure, and the second negative electrode electrolyte tank 13 and the third negative electrode electrolyte tank 18 have the same structure.
As shown in fig. 4, when a plurality of plate frames of the present utility model are stacked, the fourth positive electrode electrolyte tank 17 on the lower end surface of the upper plate frame and the first positive electrode electrolyte tank 10 on the upper end surface of the current plate frame are sealed to form a first positive electrode electrolyte flow channel, and the third positive electrode electrolyte tank 16 on the lower end surface of the upper plate frame and the second positive electrode electrolyte tank 11 on the upper end surface of the current plate frame are sealed to form a second positive electrode electrolyte flow channel.
The fourth negative electrode electrolyte tank 19 on the lower end surface of the upper plate frame is sealed with the first negative electrode electrolyte tank 12 on the upper end surface of the current plate frame to form a first negative electrode electrolyte flow channel, and the third negative electrode electrolyte tank 18 on the lower end surface of the upper plate frame is sealed with the second negative electrode electrolyte tank 13 on the upper end surface of the current plate frame to form a second negative electrode electrolyte flow channel.
The positive electrode electrolyte inlet 1, the first positive electrode electrolyte flow channel, the first positive electrode overturning hole 6 of the current plate frame, the positive electrode dispersing flow channel 20 of the current plate frame, the positive electrode cavity 5 of the current plate frame, the positive electrode collecting flow channel 21 of the current plate frame, the second positive electrode overturning hole 7 of the current plate frame, the second positive electrode electrolyte flow channel and the positive electrode electrolyte outlet 3 are sequentially communicated;
The negative electrode electrolyte inlet 2, the first negative electrode electrolyte flow passage, the first negative electrode turnover hole 8 of the upper plate frame, the negative electrode dispersion flow passage 14 of the upper plate frame, the negative electrode cavity 5 of the upper plate frame, the negative electrode collecting flow passage 15 of the upper plate frame, the second positive electrode turnover hole 7 of the upper plate frame, the second negative electrode electrolyte flow passage and the negative electrode electrolyte outlet 4 are sequentially communicated.
For example, the first positive electrode electrolyte tank 10, the second positive electrode electrolyte tank 11, the first negative electrode electrolyte tank 12, the second negative electrode electrolyte tank 13, the third positive electrode electrolyte tank 16, the fourth positive electrode electrolyte tank 17, the third negative electrode electrolyte tank 18, and the fourth negative electrode electrolyte tank 19 may be provided in an L shape, or may be provided in other shapes as necessary.
For example, the anode dispersion flow channel 14 communicates with the anode collecting flow channel 15 to form an electrolyte flow channel surrounding the anode electrode cavity 5 in a square shape; the positive electrode dispersion flow channel 20 is communicated with the positive electrode collecting flow channel 21 to form an electrolyte flow channel which surrounds the positive electrode cavity 5 and is square.
For example, when a plurality of plate frames are stacked, the cross-sectional shapes of the first positive electrolyte flow channel, the second positive electrolyte flow channel, the first negative electrolyte flow channel and the second negative electrolyte flow channel formed by the upper plate frame and the current plate frame can be rectangular or trapezoidal, for example, when the plate frames are machined, the electrolyte flow channels can be rectangular, so that machining is facilitated; when the plate frame is processed by injection molding, the electrolyte flow channel can be arranged to be trapezoid.
According to the flow battery plate frame in the horizontal overturning installation mode, the electrolyte flow channels are formed in the two end faces, so that the plate frame fully utilizes the breadth, the area with thicker thickness is reduced, shrinkage defects are reduced during injection molding production, deformation of the plate frame is reduced, and the reliability of a product is improved. The utilization rate of the breadth is improved, and the used materials are reduced, so that the material cost is also reduced.
Based on the horizontal overturning installation form of the flow battery plate frame, the utility model also provides a flow single battery which comprises the plate frame, a membrane, a positive electrode, a negative electrode and a bipolar plate.
Wherein, the membrane sets up in the electrode chamber 5 of board frame, and the membrane cuts apart the electrode chamber 5 of board frame and forms the positive electrode chamber 5 of negative electrode chamber 5 and the lower terminal surface of up end, and negative electrode sets up in negative electrode chamber 5, and positive electrode is located positive electrode chamber 5, and bipolar plate stacks the top of establishing at negative electrode.
The utility model also provides a flow battery stack, which comprises a plurality of single cells, wherein when the plurality of single cells are stacked, the single cells above the current single cell are horizontally rotated by 180 degrees for stacking installation.
In order to seal the flow channel, the utility model is matched with a double-sided flow channel, and two adjacent groups of single cells can be horizontally rotated for 180 degrees to be stacked and installed.
The single cell reduces the cost, simultaneously reduces the volume of the whole cell stack and indirectly reduces the occupied area of the whole cell system.
Although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (10)
1. The flow battery plate frame is characterized by comprising an anode electrolyte inlet, a cathode electrolyte inlet, an anode electrolyte outlet, a cathode electrolyte outlet and an electrode cavity, wherein the electrode cavity is divided into a cathode electrode cavity and an anode electrode cavity through a membrane;
The both sides of electrode chamber still are provided with first anodal upset hole, the anodal upset hole of second, first negative pole upset hole and second negative pole upset hole and satisfy: after the plate frame horizontally rotates 180 degrees, the second positive electrode overturning hole is overlapped with the first positive electrode overturning hole, and the second negative electrode overturning hole is overlapped with the first negative electrode overturning hole;
electrolyte tanks are arranged on the upper end face and the lower end face of the plate frame, which are opposite, and the requirements are met: the electrolytic cell at the lower end surface of the plate frame horizontally rotates 180 degrees and then coincides with the electrolytic cell at the upper end surface of the plate frame;
when a plurality of plate frames are stacked, the upper plate frame above the current plate frame is horizontally rotated for 180 degrees and aligned with the current plate frame, and an electrolyte tank on the upper end surface of the current plate frame and an electrolyte tank on the lower end surface of the upper plate frame form an anode electrolyte flow channel and a cathode electrolyte channel;
the positive electrolyte flow channel is communicated with the two positive overturning holes, the positive electrode cavity, the positive electrolyte inlet and the positive electrolyte outlet of the current plate frame; the negative electrode electrolyte channel is communicated with the two negative electrode overturning holes, the negative electrode cavity, the negative electrode electrolyte inlet and the negative electrode electrolyte outlet of the upper plate frame.
2. The flow battery panel frame in the form of a horizontally flipped mounting according to claim 1, wherein the panel frame is square, and the positive electrolyte inlet, the negative electrolyte inlet, the positive electrolyte outlet and the negative electrolyte outlet are disposed at four corners of the panel frame, respectively.
3. The flow battery panel frame in the form of a horizontally flipped mounting according to claim 2, wherein the positive electrolyte inlet and the positive electrolyte outlet are disposed along a diagonal of the panel frame, the negative electrolyte inlet and the negative electrolyte outlet are disposed along a diagonal of the panel frame, and the positive electrolyte inlet and the negative electrolyte inlet are located at both ends of a long side of the panel frame, respectively.
4. The flow battery plate frame in a horizontal overturning installation form according to claim 1, wherein a first positive electrolyte tank, a second positive electrolyte tank, a first negative electrolyte tank, a second negative electrolyte tank, a negative dispersion runner and a negative collecting runner are arranged on the upper end face of the plate frame;
The plate frame is provided with a third positive electrode electrolyte tank, a fourth positive electrode electrolyte tank, a third negative electrode electrolyte tank, a fourth negative electrode electrolyte tank, a positive electrode dispersion flow channel and a positive electrode collecting flow channel on the lower end surface opposite to the upper end surface;
The positive electrolyte sequentially flows through a positive electrolyte inlet, the first positive electrolyte tank, the first positive overturning hole, the positive dispersing runner, the positive electrode cavity, the positive collecting runner, the second positive overturning hole, the second positive electrolyte tank and the positive electrolyte outlet;
the negative electrode electrolyte sequentially flows through a negative electrode electrolyte inlet, the third negative electrode electrolyte tank, the first negative electrode overturning hole, the negative electrode dispersing flow channel, the negative electrode cavity, the negative electrode collecting flow channel, the second negative electrode overturning hole, the fourth negative electrode electrolyte tank and the negative electrode electrolyte outlet.
5. The horizontally flipped mounting style flow cell plate frame of claim 4 wherein the third positive electrolyte tank is located directly below the first positive electrolyte tank, one end of the third positive electrolyte tank being in communication with the positive electrolyte inlet and the other end being closed; the fourth positive electrode electrolyte tank is positioned right below the second positive electrode electrolyte tank, one end of the fourth positive electrode electrolyte tank is communicated with the positive electrode electrolyte outlet, and the other end of the fourth positive electrode electrolyte tank is closed;
The third positive electrode electrolyte tank and the second positive electrode electrolyte tank have the same structure, and the fourth positive electrode electrolyte tank and the first positive electrode electrolyte tank have the same structure.
6. The horizontally flipped mounting style flow cell plate frame of claim 5 wherein one end of the first catholyte tank is in communication with the catholyte inlet and the other end is closed and the third catholyte tank is located below the first catholyte tank; one end of the second negative electrode electrolyte tank is communicated with the negative electrode electrolyte outlet, the other end of the second negative electrode electrolyte tank is closed, and the fourth negative electrode electrolyte tank is positioned below the second negative electrode electrolyte tank;
the first negative electrode electrolyte tank and the fourth negative electrode electrolyte tank have the same structure, and the second negative electrode electrolyte tank and the third negative electrode electrolyte tank have the same structure.
7. The flow battery plate frame in the horizontal overturning mounting form according to claim 6, wherein when a plurality of plate frames are stacked, a fourth positive electrolyte tank on the lower end face of the upper plate frame and a first positive electrolyte tank on the upper end face of the current plate frame are sealed to form a first positive electrolyte flow channel, and a third positive electrolyte tank on the lower end face of the upper plate frame and a second positive electrolyte tank on the upper end face of the current plate frame are sealed to form a second positive electrolyte flow channel;
The fourth negative electrode electrolyte tank on the lower end surface of the upper plate frame is sealed with the first negative electrode electrolyte tank on the upper end surface of the current plate frame to form a first negative electrode electrolyte flow channel, and the third negative electrode electrolyte tank on the lower end surface of the upper plate frame is sealed with the second negative electrode electrolyte tank on the upper end surface of the current plate frame to form a second negative electrode electrolyte flow channel.
8. The flow battery panel frame in the horizontal flip mounting form of claim 7, wherein the positive electrolyte inlet, the first positive electrolyte flow channel, the first positive flip hole of the current panel frame, the positive dispersion flow channel of the current panel frame, the positive electrode cavity of the current panel frame, the positive collecting flow channel of the current panel frame, the second positive flip hole of the current panel frame, the second positive electrolyte flow channel, and the positive electrolyte outlet are in communication;
The negative electrode electrolyte inlet, the first negative electrode electrolyte flow passage, the first negative electrode overturning hole of the upper plate frame, the negative electrode dispersing flow passage of the upper plate frame, the negative electrode cavity of the upper plate frame, the negative electrode collecting flow passage of the upper plate frame, the second positive electrode overturning hole of the upper plate frame, the second negative electrode electrolyte flow passage and the negative electrode electrolyte outlet are sequentially communicated.
9. A flow cell, characterized by comprising a flow cell plate frame, a membrane, a positive electrode, a negative electrode and a bipolar plate in a horizontally flipped mounting form according to any one of claims 1-8;
The membrane is arranged in an electrode cavity of the plate frame, the membrane divides the electrode cavity of the plate frame into a negative electrode cavity with an upper end face and a positive electrode cavity with a lower end face, the negative electrode is arranged in the negative electrode cavity, the positive electrode is arranged in the positive electrode cavity, and the bipolar plate is overlapped above the negative electrode.
10. A flow battery stack comprising a plurality of the flow battery cells of claim 9, wherein when the plurality of battery cells are stacked, the battery cells above the current battery cell are horizontally rotated 180 degrees for stacking installation.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118676416A (en) * | 2024-08-21 | 2024-09-20 | 中海储能科技(北京)有限公司 | Flow battery's integration runner board and pile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118676416A (en) * | 2024-08-21 | 2024-09-20 | 中海储能科技(北京)有限公司 | Flow battery's integration runner board and pile |
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