Leakage protection structure for all-vanadium redox flow battery

Abstract

The utility model discloses a liquid leakage protection structure for an all-vanadium redox flow battery, and relates to the technical field of all-vanadium redox flow battery liquid leakage protection. The energy storage device comprises a box body, three storage tanks are arranged on the box body, supporting barrels are arranged in the storage tanks, all-vanadium redox flow battery component parts are arranged in the supporting barrels, and a plurality of flow guide frames are arranged on the inner walls of the supporting barrels. When the all-vanadium redox flow battery component part leaks liquid, the leaked liquid on the all-vanadium redox flow battery component part flows downwards to the nearest flow guide frame, then is discharged into the supporting barrel through the liquid discharge hole along the inclined surface of the upper side of the flow guide frame, then is discharged into the foundation through the liquid collection hole in the storage groove to be stored, and triggers an alarm; leaked liquid on the all-vanadium redox flow battery component part is guided and discharged through the nearest guide frame, so that the flowing length of the leaked liquid on the outer side wall of the all-vanadium redox flow battery component part is conveniently reduced, and the corrosion area of the outer side wall of the all-vanadium redox flow battery component part is conveniently reduced.

Description

Technical Field

[0001] The utility model belongs to the field of liquid leakage protection of all-vanadium liquid flow batteries, and specifically relates to a liquid leakage protection structure for all-vanadium liquid flow batteries. Background Art

[0002] All-vanadium liquid flow batteries store electrical energy in the form of chemical energy in a polyacid electrolyte containing vanadium ions of different valence states. The electrolyte is pumped into the battery stack through an external pump, and circulated in a closed loop of different liquid storage tanks and half-cells under mechanical power. Proton exchange membranes are used as separators for the battery pack. The electrolyte solution flows parallel to the electrode surface and undergoes an electrochemical reaction. The current is collected and conducted through bipolar plates, thereby converting the chemical energy stored in the solution into electrical energy. Its reversible reaction process enables vanadium batteries to successfully complete charging, discharging, and recharging.

[0003] A Chinese patent with application number CN202320224901.3 discloses a leakage protection structure for an all-vanadium liquid flow battery, comprising a foundation and an energy storage device arranged on the foundation, the energy storage device comprising a box body and an all-vanadium liquid flow battery arranged in the box body, the all-vanadium liquid flow battery comprising a horizontally arranged positive electrode storage tank, a negative electrode storage tank and a power component, the box body is also provided with leakage receiving grooves respectively corresponding to the positive electrode storage tank, the negative electrode storage tank and the bottom of the power component, a protection structure module is provided in the foundation, the protection structure module comprises a liquid accumulation tank, a drain pipe and a solenoid valve, each liquid accumulation tank is connected upward to the bottom of the corresponding leakage receiving groove through a drain pipe, each drain pipe is provided with a corresponding solenoid valve, and a leakage sensor is also provided at the bottom of the leakage receiving groove. It prevents liquid from overflowing when a large amount of leakage occurs, and solves the problem that the leaked liquid continues to cause corrosion damage to the battery equipment or the external environment. The leakage protection structure for the all-vanadium liquid flow battery in this application will cause the leaked liquid to flow downward on the outer wall of the liquid storage tank when the liquid storage tank leaks, increasing the degree of corrosion of the outer wall of the liquid storage tank.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a leakage protection structure for an all-vanadium liquid flow battery.

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0007] A leakage protection structure for an all-vanadium liquid flow battery comprises an energy storage device, wherein the energy storage device comprises a box body, three storage tanks are arranged on the box body, a support barrel is arranged in the storage tank, a spacing is provided between the outer side of the support barrel and the inner wall of the storage tank, an all-vanadium liquid flow battery component is arranged in the support barrel, the three all-vanadium liquid flow battery components are respectively a positive electrode storage tank, a negative electrode storage tank and a power component, a plurality of guide frames are arranged on the inner wall of the support barrel, and the all-vanadium liquid flow battery components are located in the plurality of guide frames, and a plurality of drainage holes are evenly distributed on the outer side of the support barrel, when the all-vanadium liquid flow battery component leaks, the leaked liquid on the all-vanadium liquid flow battery component flows downward to the nearest guide frame, and then is discharged into the support barrel through the drainage holes along the upper inclined surface of the guide frame, and then is discharged into the foundation through the liquid collecting holes in the storage tank for storage and triggering an alarm, and the leaked liquid on the all-vanadium liquid flow battery component is set to be diverted and discharged through the nearest guide frame, so as to facilitate reducing the flow length of the leaked liquid on the outer wall of the all-vanadium liquid flow battery component.

[0008] Optionally, the inner side of the guide frame is fitted with the outer side of the all-vanadium liquid flow battery component, and the height of the upper side of the guide frame gradually decreases from the end close to the all-vanadium liquid flow battery component to the end away from the all-vanadium liquid flow battery component, so as to facilitate the leakage on the all-vanadium liquid flow battery component to be discharged through the nearest guide frame, so as to reduce the flow length of the leakage on the outer wall of the all-vanadium liquid flow battery component.

[0009] Optionally, a plurality of raising blocks are provided on the bottom surface of the inner wall of the support barrel, and the components of the all-vanadium liquid flow battery are placed on the plurality of raising blocks, so that the components of the all-vanadium liquid flow battery can maintain a distance from the bottom surface of the inner wall of the support barrel through the raising blocks, thereby preventing the bottom end of the components of the all-vanadium liquid flow battery from fitting against the bottom surface of the inner wall of the support barrel, causing leakage to flow on the bottom surface of the inner wall of the support barrel and corrode the entire bottom end surface of the components of the all-vanadium liquid flow battery.

[0010] Optionally, a limiting groove is provided on the upper side of the box body, the limiting groove is connected to the storage groove, a limiting outer flange is provided on the upper end of the support barrel, and the limiting outer flange is located in the limiting groove, so that it is convenient to be placed in the limiting groove through the limiting outer flange.

[0011] Optionally, a cover plate is provided on the upper side of the box body, and the bottom surface of the cover plate is in contact with the upper side of the limiting outer flange, so that the storage tank can be sealed by the cover plate and the limiting outer flange can be pressed by the cover plate.

[0012] Optionally, a liquid collecting hole is provided on the bottom surface of the inner wall of the storage tank, and the liquid collecting hole is an inverted quadrangular pyramid structure, so that the leaked liquid at the bottom of the storage tank can be collected in the liquid collecting hole.

[0013] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art. Of course, any product implementing the utility model does not necessarily need to achieve all the advantages described below at the same time:

[0014] When leakage occurs in the components of the all-vanadium liquid flow battery, the leaked liquid on the components of the all-vanadium liquid flow battery flows downward to the nearest guide frame, and then is discharged into the support barrel through the drainage hole along the upper slope of the guide frame, and then is discharged into the foundation through the liquid collecting hole in the storage tank for storage and triggers an alarm. By arranging that the leaked liquid on the components of the all-vanadium liquid flow battery is diverted and discharged through the nearest guide frame, it is convenient to reduce the flow length of the leaked liquid on the outer wall of the components of the all-vanadium liquid flow battery, and to reduce the corrosion area of ​​the outer wall of the components of the all-vanadium liquid flow battery.

[0015] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described below are only some embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of an embodiment of the utility model;

[0018] Figure 2 This is a schematic cross-sectional view of an embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of the box structure of an embodiment of the utility model;

[0020] Figure 4 This is a schematic diagram of the support barrel structure of an embodiment of the utility model;

[0021] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0022] Energy storage device 1, box 100, storage tank 101, support barrel 102, all-vanadium liquid flow battery component 103, guide frame 104, pad block 105, limit groove 106, limit outer flange 107, cover plate 108, liquid collecting hole 109.

[0023] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0024] The utility model will now be further described in detail with reference to the accompanying drawings.

[0025] See also Figure 1-4As shown, in this embodiment, a leakage protection structure for an all-vanadium liquid flow battery is provided, including an energy storage device 1, the energy storage device 1 includes a box body 100, three storage tanks 101 are arranged on the box body 100, a support barrel 102 is arranged in the storage tank 101, there is a gap between the outer side of the support barrel 102 and the inner wall of the storage tank 101, an all-vanadium liquid flow battery component 103 is arranged in the support barrel 102, the three all-vanadium liquid flow battery components 103 are respectively a positive electrode liquid storage tank, a negative electrode liquid storage tank, and a power component, a plurality of guide frames 104 are arranged on the inner wall of the support barrel 102, and the all-vanadium liquid flow battery components 103 are located in the plurality of guide frames 104, and a plurality of drainage holes are evenly distributed on the outer side of the support barrel 102.

[0026] When the all-vanadium liquid flow battery component 103 leaks, the leaked liquid on the all-vanadium liquid flow battery component 103 flows downward to the nearest guide frame 104, and then is discharged into the support barrel 102 through the drainage hole along the upper slope of the guide frame 104, and then is discharged into the foundation through the liquid collecting hole 109 in the storage tank 101 for storage and triggering an alarm. By arranging the leaked liquid on the all-vanadium liquid flow battery component 103 to be diverted and discharged through the nearest guide frame 104, it is convenient to reduce the flow length of the leaked liquid on the outer wall of the all-vanadium liquid flow battery component 103, and to reduce the corrosion area of ​​the outer wall of the all-vanadium liquid flow battery component 103.

[0027] The inner side of the guide frame 104 of this embodiment is fitted with the outer side of the all-vanadium liquid flow battery component 103, and the height of the upper side surface of the guide frame 104 gradually decreases from the end close to the all-vanadium liquid flow battery component 103 to the end away from the all-vanadium liquid flow battery component 103, so as to facilitate the leakage on the all-vanadium liquid flow battery component 103 to be discharged through the nearest guide frame 104, to facilitate reducing the flow length of the leakage on the outer wall of the all-vanadium liquid flow battery component 103, and to facilitate reducing the corrosion area of ​​the outer wall of the all-vanadium liquid flow battery component 103.

[0028] The bottom surface of the inner wall of the support barrel 102 of this embodiment is provided with a plurality of raising blocks 105, and the all-vanadium liquid flow battery component 103 is placed on the plurality of raising blocks 105, so that the all-vanadium liquid flow battery component 103 can maintain a distance from the bottom surface of the inner wall of the support barrel 102 through the raising blocks 105, so as to prevent the bottom end of the all-vanadium liquid flow battery component 103 from being attached to the bottom surface of the inner wall of the support barrel 102, causing leakage to flow on the bottom surface of the inner wall of the support barrel 102 and corrode the entire bottom end surface of the all-vanadium liquid flow battery component 103, so as to reduce the corrosion area of ​​the outer wall of the all-vanadium liquid flow battery component 103.

[0029] A limiting groove 106 is provided on the upper side of the box body 100 of the present embodiment, and the limiting groove 106 is connected to the storage groove 101. A limiting outer flange 107 is provided on the upper end of the supporting barrel 102, and the limiting outer flange 107 is located in the limiting groove 106, so that the supporting barrel 102 can be placed in the limiting groove 106 through the limiting outer flange 107, and can be supported by the limiting outer flange 107.

[0030] In this embodiment, a cover plate 108 is provided on the upper side of the box body 100, and the bottom surface of the cover plate 108 is in contact with the upper side of the limiting outer flange 107, so that the storage tank 101 can be sealed by the cover plate 108, and the limiting outer flange 107 can be pressed by the cover plate 108, so as to improve the stability of the support barrel 102 in the storage tank 101.

[0031] The bottom surface of the inner wall of the storage tank 101 of this embodiment is provided with a liquid collecting hole 109, and the liquid collecting hole 109 is an inverted quadrangular pyramid structure, so that the leaked liquid at the bottom of the storage tank 101 can be gathered in the liquid collecting hole 109, and the leaked liquid at the bottom of the storage tank 101 can be completely discharged through the liquid collecting hole 109.

[0032] Working principle: The energy storage device 1 is installed on the foundation, and the foundation structure is the same as the foundation structure of a leakage protection structure for an all-vanadium liquid flow battery disclosed in publication number CN219350281U. When the all-vanadium liquid flow battery component 103 leaks, the leaked liquid on the all-vanadium liquid flow battery component 103 flows downward to the nearest guide frame 104, and then is discharged into the support barrel 102 through the drainage hole along the upper side slope of the guide frame 104, and then is discharged into the foundation through the liquid collecting hole 109 in the storage tank 101 for storage and triggers an alarm.

[0033] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0034] The present invention is not limited to the above-mentioned implementation modes. Anyone should be aware of the structural changes made under the inspiration of the present invention. Any technical solution that is the same or similar to the present invention falls within the protection scope of the present invention. The technology, shape, and structure that are not described in detail in the present invention are all known technologies.

Claims

1. A leakage protection structure for an all-vanadium redox flow battery, characterized in that: include: An energy storage device (1) comprises a box (100), the box (100) is provided with three storage tanks (101), a support barrel (102) is provided in the storage tank (101), an all-vanadium liquid flow battery component (103) is provided in the support barrel (102), a plurality of flow guide frames (104) are provided on the inner wall of the support barrel (102), and the all-vanadium liquid flow battery component (103) is located in the plurality of flow guide frames (104), and a plurality of drainage holes are evenly distributed on the outer side of the support barrel (102).

2. A leakage protection structure for all-vanadium redox flow battery according to claim 1, characterized in that: The inner side of the guide frame (104) is fitted with the outer side of the all-vanadium liquid flow battery component (103), and the height of the upper side of the guide frame (104) gradually decreases from an end close to the all-vanadium liquid flow battery component (103) to an end away from the all-vanadium liquid flow battery component (103).

3. A leakage protection structure for all-vanadium redox flow battery according to claim 1, characterized in that: The inner wall bottom surface of the support barrel (102) is provided with a plurality of heightening blocks (105), and the all-vanadium liquid flow battery components (103) are placed on the plurality of heightening blocks (105).

4. A leakage protection structure for an all-vanadium redox flow battery according to claim 1, characterized in that: A limiting groove (106) is provided on the upper side of the box body (100), the limiting groove (106) is communicated with the storage groove (101), and a limiting outer flange (107) is provided on the upper end of the support barrel (102), and the limiting outer flange (107) is located in the limiting groove (106).

5. A leakage protection structure for all-vanadium redox flow battery according to claim 4, characterized in that: A cover plate (108) is provided on the upper side of the box body (100), and the bottom surface of the cover plate (108) is in contact with the upper side of the limiting outer flange (107).

6. A leakage protection structure for all-vanadium redox flow battery according to claim 1, characterized in that: A liquid collecting hole (109) is provided on the bottom surface of the inner wall of the storage tank (101), and the liquid collecting hole (109) is an inverted quadrangular pyramid structure.

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