Device for relieving capacity fading of all-vanadium redox flow battery

Abstract

The invention relates to the technical field of batteries, and discloses a device for relieving capacity attenuation of an all-vanadium redox flow battery, the device comprises a base, the upper surface of the base is fixedly connected with a negative electrode box, one side of the negative electrode box is provided with an electric box, one side of the electric box is provided with a positive electrode box, and the upper surface of the base is provided with a filtering mechanism. A separation mechanism is arranged on one side of the filtering mechanism, a first connecting pipe is fixedly connected to the upper surfaces of the negative electrode box and the positive electrode box, and a condensation mechanism is arranged at one end of the first connecting pipe; and the separation mechanism comprises a separation tank. Nitrogen enters a fifth connecting pipe through a gas outlet pipe, a second booster pump is started to convey the nitrogen in the fifth connecting pipe into a second conveying pipe, gas is conveyed into a nitrogen tank, then the nitrogen is blown into a negative electrode box and a positive electrode box through a second connecting pipe, and side reactions are reduced by adding the nitrogen. And the capacity attenuation is relieved.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and particularly to a device for alleviating the capacity decay of a vanadium redox flow battery. Background Art

[0002] As a renewable energy storage technology with relatively high energy density and long cycle life, the vanadium redox flow battery has been widely used in the field of large-scale energy storage in recent years. Its working principle is to achieve the storage and release of energy through the redox reaction of vanadium ions in the electrolyte between the two electrodes at both ends of the battery. However, although the vanadium redox flow battery has a long service life, during the actual operation process, the problem of battery capacity decay is still very prominent, which is mainly caused by the following factors.

[0003] In the existing vanadium redox flow battery, side reactions (such as water decomposition reaction, oxygen reduction reaction, etc.) have a negative impact on the battery performance. Side reactions not only consume vanadium ions in the electrolyte, but also may generate water and gas in the battery, and these by-products will cause the capacity decay and efficiency reduction of the battery. The existing technologies have limited means in controlling these side reactions.

[0004] If the moisture in the gas (such as the moisture generated by the hydrogen oxidation reaction in the battery) fails to be removed in time, it will have an adverse effect on the quality of the electrolyte inside the battery and the battery life. Although there are certain condensation technologies for treating moisture, the condensation efficiency and moisture removal effect in the existing technologies are still insufficient, and cannot effectively avoid the accumulation of moisture and its impact on the battery performance. Summary of the Invention

[0005] Aiming at the deficiencies of the existing technologies, the present invention provides a device for alleviating the capacity decay of a vanadium redox flow battery, which solves the problem of capacity decay caused by side reactions, moisture accumulation and gas pollution during the long-term use of the vanadium redox flow battery.

[0006] To achieve the above purposes, the present invention is realized through the following technical solutions: A device for alleviating the capacity decay of a vanadium redox flow battery, including a base, the upper surface of the base is fixedly connected with a negative electrode box, one side of the negative electrode box is provided with an electrical box, one side of the electrical box is provided with a positive electrode box, the upper surface of the base is provided with a filtering mechanism, one side of the filtering mechanism is provided with a separating mechanism, the upper surfaces of the negative electrode box and the positive electrode box are fixedly connected with a first connecting pipe, and one end of the first connecting pipe is provided with a condensing mechanism;

[0007] The separation mechanism includes a separation tank. The outer wall of the separation tank is fixedly connected to a second fixing frame, and the second fixing frame is fixedly connected to the upper surface of the base. The inner wall of the separation tank is fixedly connected to a partition board, and the inner wall of the partition board is fixedly connected to a separation membrane. One end of the separation tank is fixedly connected to an air inlet pipe, and the other end of the separation tank is fixedly connected to an air outlet pipe. The outer wall of the separation tank is fixedly connected to a communication tank, and one end of the communication tank is fixedly connected to an exhaust pipe.

[0008] Preferably, the condensation mechanism includes a condensation tank. The outer wall of the condensation tank is fixedly connected to one end of a first connecting pipe. A one-way valve is fixedly connected to the upper surface of the condensation tank, and a drain valve is fixedly connected to the lower surface of the condensation tank. One end of the drain valve is fixedly connected to a drain pipe.

[0009] Preferably, a first baffle is fixedly connected inside the condensation tank. The first baffle is fixedly connected to a condensation pipe, and the outer wall of the condensation pipe is fixedly connected to a second baffle. The second baffle is fixedly connected to the inner wall of the condensation tank, and a flow guide plate is fixedly connected to the inner wall of the condensation tank. The flow guide plate internally is fixedly connected to the condensation pipe.

[0010] Preferably, the filtering mechanism includes a filtering box. The lower surface of the filtering box is fixedly connected to the upper surface of the base. A connecting frame is arranged inside the filtering box, and a filter element is fixedly connected inside the connecting frame.

[0011] Preferably, a first communication pipe is fixedly connected inside the filtering box, and an air delivery pipe is fixedly connected inside the filtering box. The outer wall of the air delivery pipe is fixedly connected to one end of the air inlet pipe.

[0012] Preferably, a cold water tank is fixedly connected to the upper surface of the base. A second communication pipe is fixedly connected to one side of the cold water tank. One end of the second communication pipe is fixedly connected to a delivery pump. The lower surface of the delivery pump is fixedly connected to the upper surface of the base. The output end of the delivery pump is fixedly connected to a first delivery pipe. One end of the first delivery pipe is fixedly connected to the outer wall of the condensation tank. A fourth connection pipe is fixedly connected to the upper surface of the cold water tank. One end of the fourth connection pipe is fixedly connected to the outer wall of the condensation tank.

[0013] Preferably, a storage tank is fixedly connected to the upper surface of the base. The upper surface of the storage tank is fixedly connected to one end of the drain pipe. The outer wall of the storage tank is fixedly connected to a first fixing frame, and the inside of the first fixing frame is fixedly connected to the outer wall of the drain pipe.

[0014] Preferably, a first mounting seat is fixedly connected to the upper surface of the base, a first booster pump is fixedly connected to the upper surface of the first mounting seat, a third connecting pipe is fixedly connected to the input end of the first booster pump, one end of the third connecting pipe is fixedly connected to one end of a check valve, and one end of the output end of the first booster pump is fixedly connected to one end of a first communicating pipe.

[0015] Preferably, a second mounting seat is fixedly connected to the upper surface of the base, a second booster pump is fixedly connected to the upper surface of the second mounting seat, a fifth connecting pipe is fixedly connected to the input end of the second booster pump, the outer wall of the fifth connecting pipe is fixedly connected to one end of an air outlet pipe, and a second delivery pipe is fixedly connected to the output end of the second booster pump.

[0016] Preferably, one end of the second delivery pipe is fixedly connected to a nitrogen tank, a rotating frame is fixedly connected to the outer wall of the nitrogen tank, the lower surface of the rotating frame is fixedly connected to the upper surface of the base, a second connecting pipe is fixedly connected to the outer wall of the nitrogen tank, and both ends of the second connecting pipe are respectively fixedly connected to the upper surfaces of a negative electrode box and a positive electrode box.

[0017] The present invention provides a device for alleviating the capacity decay of a vanadium redox flow battery. It has the following beneficial effects:

[0018] 1. In the present invention, nitrogen enters the fifth connecting pipe through the air outlet pipe. The second booster pump is started to transport the nitrogen in the fifth connecting pipe to the inside of the second delivery pipe and make the gas transported into the nitrogen tank. Then, the nitrogen is blown into the inside of the negative electrode box and the positive electrode box through the second connecting pipe. Thus, the occurrence of side reactions is reduced by adding nitrogen, achieving the alleviation of capacity decay.

[0019] 2. In the present invention, gas enters one end of the separation tank through the air inlet pipe and enters the inside of the separation membrane. Then, the gas is separated by the separation membrane, so that nitrogen enters the other end of the separation tank through the air outlet pipe and is discharged through the air outlet pipe. Other gases are discharged into the exhaust pipe through the communicating tank and then discharged, thus achieving the effect of separating and recycling nitrogen.

[0020] 3. In the present invention, the gas is blocked by the second baffle and enters the condensing pipe. Then, cold water is transported into the first baffle and the second baffle, and the deflector is used to deflect the cold water to flow on the outer wall of the condensing pipe, thereby cooling the condensing pipe to condense the moisture in the gas, and the water falls to the bottom of the condensing tank, thus achieving the effect of removing the moisture in the gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a perspective view of the present invention;

[0022] Figure 2 is a side view of the present invention;

[0023] Figure 3 Schematic diagram of the storage box of the present invention;

[0024] Figure 4 Cross-sectional view of the condensation tank of the present invention;

[0025] Figure 5 Schematic diagram of the cold water tank of the present invention;

[0026] Figure 6 Cross-sectional view of the filter box of the present invention;

[0027] Figure 7 Schematic diagram of the second fixing bracket of the present invention;

[0028] Figure 8 Cross-sectional view of the separation tank of the present invention;

[0029] Figure 9 Schematic diagram of the nitrogen tank of the present invention.

[0030] Among them, 1, base; 2, negative electrode box; 3, electrical box; 4, positive electrode box; 5, condensation mechanism; 501, condensation tank; 502, one-way valve; 503, drain valve; 504, first baffle; 505, second baffle; 506, deflector; 507, condensation pipe; 508, drain pipe; 6, separation mechanism; 601, separation tank; 602, gas outlet pipe; 603, exhaust pipe; 604, communication tank; 605, partition; 606, separation membrane; 607, intake pipe; 7, filtration mechanism; 701, filter box; 702, connecting frame; 703, filter element; 704, first communication pipe; 705, gas transmission pipe; 8, first connecting pipe; 9, second connecting pipe; 10, third connecting pipe; 11, first conveying pipe; 12, first fixing bracket; 13, conveying pump; 14, second communication pipe; 15, storage box; 16, cold water tank; 17, fourth connecting pipe; 18, first booster pump; 19, first mounting seat; 20, second booster pump; 21, second mounting seat; 22, fifth connecting pipe; 23, second fixing bracket; 24, second conveying pipe; 25, rotating frame; 26, nitrogen tank. Detailed implementation manners

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] Please refer to the attached Figure 1 - attached Figure 9, an embodiment of the present invention provides a device for alleviating the capacity attenuation of a vanadium redox flow battery, including a base 1. A negative electrode box 2 is fixedly connected to the upper surface of the base 1. An electrical box 3 is arranged on one side of the negative electrode box 2. A positive electrode box 4 is arranged on one side of the electrical box 3. A filtering mechanism 7 is arranged on the upper surface of the base 1. A separation mechanism 6 is arranged on one side of the filtering mechanism 7. A first connecting pipe 8 is fixedly connected to the upper surfaces of the negative electrode box 2 and the positive electrode box 4. A condensing mechanism 5 is arranged at one end of the first connecting pipe 8; The separation mechanism 6 includes a separation tank 601. A second fixing frame 23 is fixedly connected to the outer wall of the separation tank 601. The second fixing frame 23 is fixedly connected to the upper surface of the base 1. A partition plate 605 is fixedly connected to the inner wall of the separation tank 601. A separation membrane 606 is fixedly connected to the inner wall of the partition plate 605. An air inlet pipe 607 is fixedly connected to one end of the separation tank 601. An air outlet pipe 602 is fixedly connected to the other end of the separation tank 601. A communicating tank 604 is fixedly connected to the outer wall of the separation tank 601. An exhaust pipe 603 is fixedly connected to one end of the communicating tank 604;

[0033] Specifically, the gas enters one end of the separation tank 601 through the air inlet pipe 607 and enters the inside of the separation membrane 606. Then, the gas is separated by the separation membrane 606, so that nitrogen enters the other end of the separation tank 601 through the air outlet pipe 602, and then the nitrogen is discharged through the air outlet pipe 602. Other gases are discharged into the exhaust pipe 603 through the communicating tank 604 and then the gas is discharged.

[0034] The condensing mechanism 5 includes a condensing tank 501. The outer wall of the condensing tank 501 is fixedly connected to one end of the first connecting pipe 8. A one-way valve 502 is fixedly connected to the upper surface of the condensing tank 501. A drain valve 503 is fixedly connected to the lower surface of the condensing tank 501. One end of the drain valve 503 is fixedly connected to a drain pipe 508; A first baffle 504 is fixedly connected to the inside of the condensing tank 501. A condensing pipe 507 is fixedly connected to the first baffle 504. A second baffle 505 is fixedly connected to the outer wall of the condensing pipe 507. The second baffle 505 is fixedly connected to the inner wall of the condensing tank 501. A guide plate 506 is fixedly connected to the inner wall of the condensing tank 501. The condensing pipe 507 is fixedly connected to the inside of the guide plate 506;

[0035] Specifically, the gas in the negative electrode box 2 and the positive electrode box 4 enters the interior of the condensation tank 501 through the first connecting pipe 8. The gas enters the condensation pipe 507 through the blockage of the second baffle 505. Then, cold water is conveyed into the first baffle 504 and the second baffle 505. The deflector plate 506 deflects the cold water to flow on the outer wall of the condensation pipe 507, thereby cooling the condensation pipe 507 to condense the moisture in the gas, causing the water to fall to the bottom of the condensation tank 501. The water enters the drain pipe 508 through the drain valve 503, thus discharging the water. The gas enters the top of the condensation tank 501 through the condensation pipe 507, and the check valve 502 discharges the gas.

[0036] The filtering mechanism 7 includes a filtering box 701. The lower surface of the filtering box 701 is fixedly connected to the upper surface of the base 1. A connecting frame 702 is arranged inside the filtering box 701, and a filter element 703 is fixedly connected inside the connecting frame 702. A first communicating pipe 704 is fixedly connected inside the filtering box 701, and an air delivery pipe 705 is fixedly connected inside the filtering box 701. The outer wall of the air delivery pipe 705 is fixedly connected to one end of the air inlet pipe 607.

[0037] Specifically, the gas enters the interior of the filtering box 701 through the first communicating pipe 704, and the gas is filtered by the filter element 703, so that the impurities in the gas are filtered out, and the gas enters the interior of the air delivery pipe 705 and is then discharged. By pulling the filtering mechanism 7 inside the filtering box 701, the filter element 703 is driven to move, and then the filter element 703 is taken out for replacement.

[0038] A cold water tank 16 is fixedly connected to the upper surface of the base 1. A second communicating pipe 14 is fixedly connected to one side of the cold water tank 16. One end of the second communicating pipe 14 is fixedly connected to a delivery pump 13. The lower surface of the delivery pump 13 is fixedly connected to the upper surface of the base 1. The output end of the delivery pump 13 is fixedly connected to a first delivery pipe 11. One end of the first delivery pipe 11 is fixedly connected to the outer wall of the condensation tank 501. A fourth connecting pipe 17 is fixedly connected to the upper surface of the cold water tank 16. One end of the fourth connecting pipe 17 is fixedly connected to the outer wall of the condensation tank 501.

[0039] Specifically, by starting the output end of the delivery pump 13, the water in the cold water tank 16 is pumped out through the second communicating pipe 14 and conveyed into the first delivery pipe 11, and then conveyed into the interior of the condensation tank 501 through the first delivery pipe 11 for cooling. The cold water in the condensation tank 501 is discharged into the cold water tank 16 through the fourth connecting pipe 17 for cooling.

[0040] The upper surface of the base 1 is fixedly connected with a storage box 15. The upper surface of the storage box 15 is fixedly connected to one end of a drain pipe 508. The outer wall of the storage box 15 is fixedly connected with a first fixing frame 12, and the inside of the first fixing frame 12 is fixedly connected to the outer wall of the drain pipe 508;

[0041] Specifically, the condensation tank 501 is fixed by the first fixing frame 12. The condensed water is discharged into the storage box 15 through the drain pipe 508, and then the condensed water is collected by the storage box 15.

[0042] The upper surface of the base 1 is fixedly connected with a first mounting seat 19. The upper surface of the first mounting seat 19 is fixedly connected with a first booster pump 18. The input end of the first booster pump 18 is fixedly connected with a third connecting pipe 10. One end of the third connecting pipe 10 is fixedly connected to one end of a check valve 502. The output end of the first booster pump 18 is fixedly connected to one end of a first communicating pipe 704;

[0043] Specifically, the first booster pump 18 is fixed on the base 1 through the first mounting seat 19. The gas in the condensation tank 501 is pumped out through the third connecting pipe 10 by starting the first booster pump 18 and is transported into the first communicating pipe 704 through the first booster pump 18, and then filtered.

[0044] The upper surface of the base 1 is fixedly connected with a first mounting seat 19. The upper surface of the first mounting seat 19 is fixedly connected with a first booster pump 18. The input end of the first booster pump 18 is fixedly connected with a third connecting pipe 10. One end of the third connecting pipe 10 is fixedly connected to one end of a check valve 502. The output end of the first booster pump 18 is fixedly connected to one end of a first communicating pipe 704; The upper surface of the base 1 is fixedly connected with a second mounting seat 21. The upper surface of the second mounting seat 21 is fixedly connected with a second booster pump 20. The input end of the second booster pump 20 is fixedly connected with a fifth connecting pipe 22. The outer wall of the fifth connecting pipe 22 is fixedly connected to one end of an air outlet pipe 602. The output end of the second booster pump 20 is fixedly connected with a second delivery pipe 24; One end of the second delivery pipe 24 is fixedly connected with a nitrogen tank 26. The outer wall of the nitrogen tank 26 is fixedly connected with a rotating frame 25. The lower surface of the rotating frame 25 is fixedly connected to the upper surface of the base 1. The outer wall of the nitrogen tank 26 is fixedly connected with a second connecting pipe 9. Both ends of the second connecting pipe 9 are respectively fixedly connected to the negative electrode box 2 and the positive electrode box 4;

[0045] Specifically, nitrogen gas enters the fifth connecting pipe 22 through the air outlet pipe 602. The second booster pump 20 is fixed to the base 1 through the second mounting seat 21, and the second booster pump 20 is started to convey the nitrogen gas in the fifth connecting pipe 22 into the interior of the second delivery pipe 24, and the gas is conveyed into the nitrogen gas tank 26. Then, the nitrogen gas is blown into the interior of the negative electrode box 2 and the positive electrode box 4 through the second connecting pipe 9. Furthermore, the occurrence of side reactions is reduced by adding nitrogen gas, thereby alleviating capacity fade.

[0046] Working principle: First, nitrogen gas enters the second connecting pipe 9 through the nitrogen gas tank 26 and is blown into the interior of the negative electrode box 2 and the positive electrode box 4. Then, by adding nitrogen gas, the occurrence of side reactions is reduced. The gas in the negative electrode box 2 and the positive electrode box 4 enters the interior of the condensation tank 501 through the first connecting pipe 8. Due to the blockage of the second baffle 505, the gas enters the condensation pipe 507. The water in the cold water tank 16 is pumped out through the second connecting pipe 14 by starting the output end of the delivery pump 13 and is transported into the first delivery pipe 11, and then transported into the interior of the condensation tank 501 through the first delivery pipe 11. By delivering cold water into the first baffle 504 and the second baffle 505, the guide plate 506 guides the cold water to flow on the outer wall of the condensation pipe 507, thereby cooling the condensation pipe 507 to condense the moisture in the gas. The water flows to the bottom of the condensation tank 501 and enters the drain pipe 508 through the drain valve 503, thus discharging the water. The condensed water is discharged into the interior of the storage tank 15 through the drain pipe 508, and then the storage tank 15 collects the condensed water. The cold water in the condensation tank 501 is discharged into the cold water tank 16 through the fourth connecting pipe 17 for cooling. The gas enters the top end of the condensation tank 501 through the condensation pipe 507, and the check valve 502 discharges the gas. By starting the first booster pump 18, the gas is pumped out through the third connecting pipe 10 and transported into the interior of the first connecting pipe 704 by the first booster pump 18. The gas enters the interior of the filter box 701 through the first connecting pipe 704, and the gas is filtered by the filter element 703. The impurities in the gas are filtered out, and the gas enters the interior of the gas transmission pipe 705 and is then discharged. By pulling the filtering mechanism 7 inside the filter box 701, the filter element 703 is driven to move, and then the filter element 703 is taken out for replacement. The gas enters one end of the separation tank 601 through the air inlet pipe 607 and enters the interior of the separation membrane 606. Then, the gas is separated by the separation membrane 606. The nitrogen gas enters the other end of the separation tank 601 through the air outlet pipe 602 and is then discharged through the air outlet pipe 602. Other gases are discharged into the exhaust pipe 603 through the connecting tank 604 and then discharged. The nitrogen gas enters the fifth connecting pipe 22 through the air outlet pipe 602. By starting the second booster pump 20, the nitrogen gas in the fifth connecting pipe 22 is transported into the interior of the second delivery pipe 24 and is transported into the nitrogen gas tank 26. Then, the nitrogen gas is blown into the interior of the negative electrode box 2 and the positive electrode box 4 through the second connecting pipe 9. By adding nitrogen gas, the occurrence of side reactions is reduced, achieving the effect of alleviating capacity attenuation.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for alleviating capacity decay of an all-vanadium liquid flow battery, comprising a base (1), characterized in that: The upper surface of the base (1) is fixedly connected to a negative electrode box (2), an electric box (3) is provided on one side of the negative electrode box (2), a positive electrode box (4) is provided on one side of the electric box (3), a filtering mechanism (7) is provided on the upper surface of the base (1), a separation mechanism (6) is provided on one side of the filtering mechanism (7), a first connecting pipe (8) is fixedly connected to the upper surfaces of the negative electrode box (2) and the positive electrode box (4), and a condensing mechanism (5) is provided at one end of the first connecting pipe (8); The separation mechanism (6) comprises a separation tank (601), the outer wall of the separation tank (601) is fixedly connected to a second fixing frame (23), the second fixing frame (23) is fixedly connected to the upper surface of the base (1), the inner wall of the separation tank (601) is fixedly connected to a partition (605), the inner wall of the partition (605) is fixedly connected to a separation membrane (606), one end of the separation tank (601) is fixedly connected to an air inlet pipe (607), the other end of the separation tank (601) is fixedly connected to an air outlet pipe (602), the outer wall of the separation tank (601) is fixedly connected to a connecting tank (604), and one end of the connecting tank (604) is fixedly connected to an exhaust pipe (603).

2. The device for alleviating capacity attenuation of an all-vanadium redox flow battery according to claim 1, characterized in that: The condensation mechanism (5) comprises a condensation tank (501), the outer wall of the condensation tank (501) is fixedly connected to one end of a first connecting pipe (8), the upper surface of the condensation tank (501) is fixedly connected to a one-way valve (502), the lower surface of the condensation tank (501) is fixedly connected to a drain valve (503), and one end of the drain valve (503) is fixedly connected to a drain pipe (508).

3. The device for alleviating capacity attenuation of an all-vanadium redox flow battery according to claim 2, characterized in that: The interior of the condensation tank (501) is fixedly connected with a first baffle (504), the first baffle (504) is fixedly connected with a condensation tube (507), the outer wall of the condensation tube (507) is fixedly connected with a second baffle (505), the second baffle (505) is fixedly connected to the inner wall of the condensation tank (501), the inner wall of the condensation tank (501) is fixedly connected with a guide plate (506), and the interior of the guide plate (506) is fixedly connected with a condensation tube (507).

4. The device for alleviating capacity attenuation of an all-vanadium redox flow battery according to claim 1, characterized in that: The filtering mechanism (7) comprises a filtering box (701), the lower surface of the filtering box (701) being fixedly connected to the upper surface of the base (1), a connecting frame (702) being arranged inside the filtering box (701), and a filtering core (703) being fixedly connected inside the connecting frame (702).

5. The device for alleviating capacity attenuation of all-vanadium redox flow battery according to claim 4, characterized in that: The interior of the filter box (701) is fixedly connected to a first connecting pipe (704), the interior of the filter box (701) is fixedly connected to an air supply pipe (705), and the outer wall of the air supply pipe (705) is fixedly connected to one end of the air inlet pipe (607).

6. The device for alleviating capacity attenuation of all-vanadium redox flow battery according to claim 1, characterized in that: The upper surface of the base (1) is fixedly connected to a cold water tank (16), one side of the cold water tank (16) is fixedly connected to a second connecting pipe (14), one end of the second connecting pipe (14) is fixedly connected to a delivery pump (13), the lower surface of the delivery pump (13) is fixedly connected to the upper surface of the base (1), the output end of the delivery pump (13) is fixedly connected to a first delivery pipe (11), one end of the first delivery pipe (11) is fixedly connected to the outer wall of the condensation tank (501), the upper surface of the cold water tank (16) is fixedly connected to a fourth connecting pipe (17), one end of the fourth connecting pipe (17) is fixedly connected to the outer wall of the condensation tank (501).

7. The device for alleviating capacity attenuation of all-vanadium redox flow battery according to claim 1, characterized in that: The upper surface of the base (1) is fixedly connected to a storage box (15), the upper surface of the storage box (15) is fixedly connected to one end of a drain pipe (508), the outer wall of the storage box (15) is fixedly connected to a first fixing frame (12), the interior of the first fixing frame (12) is fixedly connected to the outer wall of the drain pipe (508).

8. The device for alleviating capacity attenuation of all-vanadium redox flow battery according to claim 1, characterized in that: The upper surface of the base (1) is fixedly connected to a first mounting seat (19), the upper surface of the first mounting seat (19) is fixedly connected to a first boosting pump (18), the input end of the first boosting pump (18) is fixedly connected to a third connecting pipe (10), one end of the third connecting pipe (10) is fixedly connected to one end of the one-way valve (502), and the output end of the first boosting pump (18) is fixedly connected to one end of the first connecting pipe (704).

9. The device for alleviating capacity attenuation of all-vanadium redox flow battery according to claim 1, characterized in that: The upper surface of the base (1) is fixedly connected to a second mounting seat (21), the upper surface of the second mounting seat (21) is fixedly connected to a second boosting pump (20), the input end of the second boosting pump (20) is fixedly connected to a fifth connecting pipe (22), the outer wall of the fifth connecting pipe (22) is fixedly connected to one end of the air outlet pipe (602), and the output end of the second boosting pump (20) is fixedly connected to a second delivery pipe (24).

10. The device for alleviating capacity attenuation of all-vanadium redox flow battery according to claim 9, characterized in that: One end of the second delivery pipe (24) is fixedly connected to a nitrogen tank (26), the outer wall of the nitrogen tank (26) is fixedly connected to a rotating frame (25), the lower surface of the rotating frame (25) is fixedly connected to the upper surface of the base (1), the outer wall of the nitrogen tank (26) is fixedly connected to a second connecting pipe (9), and both ends of the second connecting pipe (9) are respectively fixedly connected to the upper surfaces of the negative electrode box (2) and the positive electrode box (4).

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