Solid-liquid mixed flow battery electrolyte storage tank

Abstract

The solid-liquid mixed flow battery electrolyte storage tank comprises a tank body, the tank body is provided with a main body containing part and a flow guide containing part which are communicated with each other, and the flow guide containing part is located below the main body containing part; the cover body is arranged on the tank body in a covering manner, and a liquid flow inlet is formed in the cover body; the liquid flow outlet is formed in the lower surface of the tank body; the sieve plate is arranged in the main body accommodating part, and a plurality of through holes with the sizes smaller than those of the solid energy storage materials placed on the sieve plate are formed in the sieve plate; and the flow guide accommodating part has a shape of which the diameter is gradually reduced from top to bottom. According to the electrolyte storage tank for the solid-liquid mixed flow battery, the electrolyte can be diffused more uniformly, the utilization rate of the electrolyte and a solid energy storage material is improved, the cycling stability of the battery is improved, the overall performance of the flow battery is optimized, and the maintenance cost of the battery is reduced.

Description

Technical Field

[0001] This utility model relates to the field of flow battery technology, and more specifically, to a solid-liquid hybrid flow battery electrolyte storage tank. Background Technology

[0002] Flow batteries are a novel type of electrochemical energy storage device that has been widely applied. The principle of a flow battery is to achieve the interconversion of electrical energy and chemical energy through a reversible redox reaction of active materials at the electrodes. Hybrid flow batteries combine the advantages of traditional flow batteries and solid-state batteries, increasing the energy density and power density of the battery by adding solid energy storage materials to the electrolyte. This battery design allows solid energy storage materials to overcome limitations related to solubility and elasticity, enabling high-energy scalable energy storage.

[0003] Existing flow battery storage tanks are generally simple cylindrical or cuboid structures. Both of these structures have certain limitations. A significant drawback is the uneven diffusion of the electrolyte flowing back into the tank, leading to insufficient reaction with the solid energy storage material. This results in low utilization of the solid energy storage material, thus reducing the stability of the flow battery system. This not only limits the improvement of the overall performance of flow batteries but also significantly increases the maintenance costs. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a solid-liquid hybrid flow battery electrolyte storage tank, which enables the electrolyte to diffuse more evenly, improves the utilization rate of electrolyte and solid energy storage materials, enhances the cycle stability of the battery, optimizes the overall performance of the flow battery, and reduces battery maintenance costs.

[0005] This utility model provides a solid-liquid hybrid flow battery electrolyte storage tank, comprising:

[0006] The tank has a main body receiving section and a flow guiding section that are interconnected, the flow guiding section being located below the main body receiving section;

[0007] A cover is placed on top of the tank body, and the cover has a liquid inlet.

[0008] A liquid outlet is located at the bottom of the tank.

[0009] A sieve plate is disposed in the main body receiving part, and a plurality of through holes with a size smaller than that of the solid energy storage material placed on the sieve plate are provided thereon;

[0010] The flow guide and receiving portion has a shape in which the diameter gradually decreases from top to bottom.

[0011] Preferably, in the above-mentioned solid-liquid mixed flow battery electrolyte storage tank, the shape of the flow guide and receiving part is an inverted cone.

[0012] Preferably, in the above-mentioned solid-liquid mixed flow battery electrolyte storage tank, the main receiving part is cylindrical in shape.

[0013] Preferably, in the above-mentioned solid-liquid hybrid flow battery electrolyte storage tank, the top edge of the flow guiding and receiving portion that contacts the cylinder has the same diameter as the main receiving portion.

[0014] Preferably, in the above-mentioned solid-liquid mixed flow battery electrolyte storage tank, at least one of the sieve plates is located at or above the connection point of the main body receiving part and the flow guiding receiving part at a predetermined height.

[0015] Preferably, in the above-mentioned solid-liquid hybrid flow battery electrolyte storage tank, the bottom diameter of the flow guide portion is equal to the diameter of the liquid flow outlet.

[0016] Preferably, the above-mentioned solid-liquid hybrid flow battery electrolyte storage tank further includes:

[0017] A liquid outlet switch component is disposed on the liquid outlet.

[0018] Preferably, in the above-mentioned solid-liquid mixed flow battery electrolyte storage tank, the periphery of the cover has a vertically downward extending edge, the inner side of the extending edge is provided with a thread that matches the thread of the upper periphery of the tank body, the liquid inlet is located at the center of the surface of the cover, and the liquid inlet has a first threaded hole that matches the diameter of the feed pipe.

[0019] Preferably, in the above-mentioned solid-liquid mixed flow battery electrolyte storage tank, the liquid outlet has a second threaded hole that matches the diameter of the discharge pipe.

[0020] Preferably, the above-mentioned solid-liquid hybrid flow battery electrolyte storage tank further includes:

[0021] A support mechanism is provided below the tank to provide support for the tank.

[0022] As can be seen from the above technical solution, the solid-liquid hybrid flow battery electrolyte storage tank provided by this utility model has an interconnected main body receiving section and a flow guiding section. A sieve plate is disposed in the main body receiving section, and multiple through holes with a size smaller than the size of the solid energy storage material placed on the sieve plate are opened on it. In this way, the solid energy storage material can be placed in the main body receiving section. The lid of the tank has a liquid inlet, and the liquid outlet is located at the bottom of the tank. This allows the electrolyte to enter from the liquid inlet, flow from top to bottom through the internal space of the tank, and then flow out from the liquid outlet. When the electrolyte passes through the solid energy storage material, it can react with the liquid. The solid energy storage material reacts, and because the flow guide is located below the main container and has a gradually decreasing diameter from top to bottom, the liquid flow within the flow guide can form a rapidly rotating vortex. This drives the electrolyte in the entire tank to generate a rapidly rotating liquid flow velocity component, allowing the electrolyte and solid energy storage material to fully contact and mix evenly, and to react more quickly and effectively. It is evident that this scheme can make the electrolyte diffuse more evenly, improve the utilization rate of the electrolyte and solid energy storage material, improve the cycle stability of the battery, optimize the overall performance of the flow battery, and reduce the battery maintenance cost. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0024] Figure 1 A schematic diagram of an embodiment of a solid-liquid hybrid flow battery electrolyte storage tank provided by this utility model;

[0025] Figure 2 This is a schematic diagram of the cross-section of the sieve plate;

[0026] Figure 3 This is a schematic diagram of one possible liquid dispensing switch component;

[0027] Figure 4 This is a schematic diagram showing the results of a COMSOL simulation of the liquid flow velocity inside an existing cylindrical storage tank;

[0028] Figure 5 This is a schematic diagram showing the results of a COMSOL simulation of the liquid flow velocity inside the storage tank provided in this application;

[0029] Figure 6 A comparison chart of test results for the storage tank provided in this application and storage tanks used in the prior art. Detailed Implementation

[0030] The core of this invention is to provide a solid-liquid hybrid flow battery electrolyte storage tank, which enables the electrolyte to diffuse more evenly, improves the utilization rate of electrolyte and solid energy storage materials, enhances the cycle stability of the battery, optimizes the overall performance of the flow battery, and reduces battery maintenance costs.

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] An embodiment of the solid-liquid hybrid flow battery electrolyte storage tank provided by this utility model is as follows: Figure 1 As shown, Figure 1 This is a schematic diagram of an embodiment of a solid-liquid hybrid flow battery electrolyte storage tank provided by this utility model. The solid-liquid hybrid flow battery electrolyte storage tank may include:

[0033] The tank 1 has a main body receiving section 11 and a flow guiding section 12 that are interconnected. The main body receiving section 11 is used to place solid energy storage material inside so that the electrolyte can come into contact with the solid energy storage material when it flows through the main body receiving section to carry out a chemical reaction. The flow guiding section 12 is located below the main body receiving section 11. The flow guiding section 12 is used to guide the liquid flowing through the main body receiving section 11 to the liquid outlet, and then flow out. After passing through the corresponding electrodes for reaction, it re-enters the tank 1, and so on. The tank 1 is preferably made of a corrosion-resistant and high-temperature-resistant material according to the electrolyte.

[0034] A cover 2 is placed on top of the tank 1 to ensure safety during the electrolyte reaction process. This cover 2 may have a liquid inlet 21, which is used to connect to the liquid inlet pipe to introduce the electrolyte into the tank 1. The location of the liquid inlet 21 is not limited, but it is preferably located in the middle of the cover 2. This can balance the eddy current effect and impact force on the electrolyte after it enters the tank 1, so as to improve the uniformity of the reaction and ensure the stability of the solid material structure. Of course, the liquid inlet 21 can also be set in other locations according to actual needs, and the number of liquid inlets 21 can be one, two or more, which can be selected according to actual needs.

[0035] The liquid outlet 13 is located at the bottom of the tank body 1. Under the action of gravity, the electrolyte will collect at the liquid outlet 13 and flow out of the tank body 1. After reacting with the relevant electrodes, it will return to the tank body 1, and so on.

[0036] The sieve plate 3 is disposed in the main body receiving part 11, and has multiple through holes 31 with a size smaller than that of the solid energy storage material placed on the sieve plate, such as... Figure 2 As shown, Figure 2 This is a cross-sectional schematic diagram of the sieve plate. The function of these through holes 31 is to support the solid energy storage material, ensuring its stable placement within the main body receiving section 11. They also allow the electrolyte to pass through, flowing from the main body receiving section 11 into the guiding receiving section 12, and to ensure continuous electrolyte circulation. The size of the through holes 31 must match the size of the solid energy storage material they support. When the size of the solid energy storage material placed on the sieve plate is large, the size of the through holes 31 can be correspondingly larger. This allows the electrolyte to flow through more quickly while supporting the solid energy storage material, thus ensuring proper interaction between the electrolyte and the solid energy storage material. The contact area is larger, and the reaction is more complete. When the size of the solid energy storage material placed on the sieve plate is small, the size of the through hole 31 can be set to be smaller. This can ensure that the solid energy storage material is supported and that it will not fall through the through hole. Moreover, the sieve plate 3 can preferably be distributed throughout the entire sieve plate so that the electrolyte can flow through all parts of the sieve plate, thereby ensuring that more electrolyte will have sufficient contact and reaction with the sieve plate, improving the utilization rate of electrolyte and solid energy storage material. The sieve plate 3 can be placed on the inward protrusion on the inner wall of the tank 1.

[0037] The aforementioned flow guide 12 has a shape with a gradually decreasing diameter from top to bottom. That is, the diameter of the flow guide 12 becomes smaller and smaller from top to bottom until it is equal to the diameter of the liquid outlet 13. This change in cross-sectional area and flow velocity creates a vortex effect at the structure, generating shear force as the electrolyte flows downward, causing the electrolyte to rotate. This rotation component can make the electrolyte in the tank 1 more active, allowing for more sufficient contact between the electrolyte and the solid energy storage material, thereby improving the utilization rate of the electrolyte and the solid energy storage material.

[0038] As can be seen from the above technical solution, in the embodiment of the solid-liquid hybrid flow battery electrolyte storage tank provided by this utility model, the tank body has an interconnected main receiving part and a flow guiding receiving part. A sieve plate is set in the main receiving part, and multiple through holes with a size smaller than the size of the solid energy storage material placed on the sieve plate are opened on it. In this way, the solid energy storage material can be placed in the main receiving part. The lid of the tank body has a liquid inlet and a liquid outlet is opened at the bottom of the tank body. In this way, the electrolyte can enter from the liquid inlet, flow from top to bottom through the internal space of the tank body, and then flow out from the liquid outlet. When the electrolyte passes through the solid energy storage material, it can react with the solid... The energy storage material reacts, and because the flow guide is located below the main body, and the flow guide has a gradually decreasing diameter from top to bottom, the liquid flow within the flow guide can form a rapidly rotating vortex. This drives the electrolyte in the entire tank to generate a rapidly rotating liquid flow velocity component, thereby allowing the electrolyte and solid energy storage material to have more complete and uniform contact and to carry out a faster chemical reaction. It can be seen that this scheme can make the electrolyte diffuse more uniformly, improve the utilization rate of electrolyte and solid energy storage material, improve the cycle stability of the battery, optimize the overall performance of the flow battery, and reduce the battery maintenance cost.

[0039] In one specific embodiment of the electrolyte storage tank for the aforementioned solid-liquid hybrid flow battery, the shape of the flow guiding and receiving portion 12 can be an inverted cone, such as... Figure 1 The diagram shows an inverted cone shape. With this shape, the sidewalls are smoothly tapered, which ensures less friction during the electrolyte's descent. This prevents electrolyte residue from forming on the inner wall of the flow-guiding section, resulting in a faster flow rate. The overall velocity of the electrolyte flow field within the entire tank 1 is enhanced, thereby further improving the utilization rate of the electrolyte and solid energy storage materials. Of course, in addition to this inverted cone structure, the flow-guiding section 12 can also be selected in other shapes according to actual needs, such as an inverted triangular pyramid shape, an inverted trapezoid, or even a shape with a stepped inner surface.

[0040] In further embodiments, reference may be made to... Figure 1The main body receiving portion 11 is preferably cylindrical. Since the flow guiding portion 12 allows the electrolyte to generate a rotational component during its descent, the electrolyte in the main body receiving portion 11 also generates a rotational component. With a cylindrical main body receiving portion 11, its inner wall is circular, aligning with the direction of the electrolyte's rotational component. This prevents obstruction of the electrolyte in the rotational direction, further increasing the electrolyte flow rate and improving the utilization rate of the electrolyte and solid energy storage material. Of course, other shapes of the main body receiving portion 11 can be selected according to actual needs, such as elliptical, square, or other polygonal cylindrical shapes; this is not a limitation. Furthermore, the top edge of the flow guiding portion 12 that contacts the cylinder has the same diameter as the main body receiving portion, achieving a seamless connection. In this case, the electrolyte will not be obstructed at the connection point during its descent, thus not affecting the descent speed and further improving the overall electrolyte flow rate. Of course, the diameters of both portions at this location can be adjusted adaptively according to actual needs; this is not a limitation.

[0041] Furthermore, at least one of the aforementioned sieve plates 3 is positioned at or above the connection point between the main body receiving portion 11 and the flow guiding receiving portion 12 at a predetermined height. It should be noted that multiple sieve plates 3 can be installed within the main body receiving portion 11. Each sieve plate 3 can hold a certain amount of solid energy storage material. The more sieve plates 3 there are, the less solid energy storage material is placed on each sieve plate 3, thus distributing the weight and allowing the sieve plates 3 to operate more safely, preventing them from being crushed. Moreover, the aforementioned predetermined height can be selected according to actual needs. The predetermined height can be as small as possible, so that at least one sieve plate 3 is closer to the connection point between the main body receiving portion 11 and the flow guiding receiving portion 12. The predetermined height can even be 0, which corresponds to the scheme of placing the sieve plate 3 at the connection point between the main body receiving portion and the flow guiding receiving portion. The electrolyte at the height of plate 3 is closer to the lower liquid outlet 13, resulting in a higher liquid flow rotation speed. Therefore, the solid energy storage material on the sieve plate 3 can be more fully and evenly contacted with the electrolyte due to the influence of the eddy current, thus promoting the reaction. This can further improve the overall battery performance, reduce the impact of the eddy current on the solid energy storage material, protect the integrity of the solid energy storage material, and reduce the risk of breakage. In some other cases, there may be only one sieve plate 3, which can be placed as close as possible to the connection between the main body receiving part 11 and the flow guiding part 12. The sieve plate 3 can even be placed at the connection between the two to be closest to the eddy current area for a more complete reaction.

[0042] To further improve battery performance, based on the above embodiment, the bottom diameter of the flow-guiding and receiving portion 12 is preferably equal to the diameter of the liquid outlet 13. This ensures that the sidewall of the flow-guiding and receiving portion 12 extends to its lowest point and connects smoothly with the liquid outlet 13. In this case, the electrolyte will not be blocked by the sidewall of the flow-guiding and receiving portion 12 as it flows downwards within the flow-guiding and receiving portion 12, and will flow directly out of the liquid outlet 13, reducing liquid resistance. This structure can further increase the flow velocity of the entire liquid flow field, thereby improving battery performance. Additionally, a valve can be installed at the liquid outlet 13 to control the electrolyte discharge rate.

[0043] Those skilled in the art will understand that solid energy storage materials may break down after prolonged use. Existing tank structures are ill-suited for effectively handling broken solid energy storage materials, leading to pipe blockages and even battery blockages. The only way to remove the broken solid energy storage material is by stopping the electrolyte supply, draining the electrolyte, and then cleaning the tank, significantly reducing battery operating efficiency. To address this problem, this application provides a preferred embodiment, which is based on the various embodiments of the solid-liquid hybrid flow battery electrolyte storage tank described above, with reference to... Figure 3 , Figure 3 The diagram illustrates one possible liquid outlet switch component. The storage tank may also include a liquid outlet switch component 4, located at the liquid outlet 13. This liquid outlet switch component 4 may have a three-way structure, comprising a first liquid outlet channel 41, a second liquid outlet channel 42, and a third liquid outlet channel 43. The first liquid outlet channel 41 can be connected to the liquid outlet 13. Under normal operating conditions, the outlet pipe can be connected to the second liquid outlet channel 42, allowing the electrolyte to flow out from the second liquid outlet channel 42 and, after passing the battery electrodes, return to the storage tank from the inlet, thus achieving circulation between the battery reaction electrolyte and the electrolyte within the storage tank. This design, through its inverted cone structure, can collect broken solid energy storage material at the liquid outlet. During unblocking, the third liquid outlet channel 43 can be used as the current liquid outflow path, allowing the broken solid energy storage material to be discharged through the third liquid outlet channel 43. This demonstrates the separation of unblocking operations from operational operations, simplifying the unblocking process after solid energy storage material breakage and reducing maintenance costs. Of course, this three-way valve is only a preferred option, and other liquid outlet switch components with different structures can also be used; there are no restrictions here.

[0044] Based on the various embodiments of the electrolyte storage tank for the solid-liquid hybrid flow battery described above, and continuing to refer to... Figure 1The periphery of the cover 2 can have a vertically downward extending edge 22. The inner side of the extending edge 22 is provided with a thread that matches the thread on the upper periphery of the tank 1, so that the cover 2 can be fastened to the tank 1 to achieve a tight fit. The cover 2 and the tank 1 can be sealed to prevent leakage. Moreover, the liquid inlet 21 can be located at the center of the surface of the cover 2, and the liquid inlet 21 has a first threaded hole that matches the diameter of the feed pipe, so that the feed pipe can be firmly installed on the liquid inlet 21. Specifically, the two can preferably be connected by a pagoda joint. Of course, other sealing connection methods can also be selected according to actual needs, such as snap-fit ​​or flange connection, etc., which are not limited here.

[0045] Based on the various embodiments of the electrolyte storage tank for the solid-liquid hybrid flow battery described above, the liquid outlet 13 preferably has a second threaded hole that matches the diameter of the discharge pipe. This allows the discharge pipe to be screwed into the second threaded hole of the liquid outlet 13 for a secure connection, enabling electrolyte circulation. Other connection methods can also be used, such as snap-fit ​​or flange connections, to accommodate different sizes and models of flow battery systems; this is not a limitation. Furthermore, this liquid outlet 13 can employ a special sealing structure, including but not limited to a sealing cap, sealing gasket, and sealing liquid or gas, to further ensure the sealing and safety of the electrolyte.

[0046] Based on the various embodiments of the electrolyte storage tank for the solid-liquid hybrid flow battery described above, and continuing to refer to... Figure 1 It may also include a support mechanism 5, which is located below the tank body 1 to support the tank body 1. Specifically, a four-legged support mechanism 5 can be used to maintain the stability of the entire storage tank and prevent it from tipping over. Of course, three legs or more legs can also be selected depending on the actual weight and size of the tank body. There is no limitation here. Furthermore, a composite air cushion can be added between the support structure 5 and the ground, or an air cushion foundation can be selected to reduce the burden on the foundation and reduce the losses caused by disasters such as earthquakes.

[0047] When using the above-mentioned solid-liquid hybrid flow battery electrolyte storage tank, first clean the tank and related accessories, then connect them. Connect the threaded part of the cover to one side of the pagoda connector, and connect the other side of the pagoda connector to the inlet pipe. Connect the bottom of the tank to one side of the pagoda connector, and connect the other side of the pagoda connector to the outlet pipe. Then fill in the solid energy storage material. Place the sieve plate inside the cylinder at the top of the tank according to the filling degree of the solid energy storage material. When placing the sieve plate, the number of sieve plates can be adjusted as needed. After filling, align and tighten the threads between the cover and the cylinder to fix them. Connect the battery's electrolyte inlet and outlet pipes to the liquid inlet and liquid outlet respectively, so that the battery reaction electrolyte and the electrolyte in the storage tank form a circulation.

[0048] The solid-liquid hybrid flow battery electrolyte storage tank provided in this application has an inverted conical structure at the lower end of the tank. The change in the diameter of this structure alters the flow velocity, subjecting the electrolyte to shear forces and agitation in different directions during flow, thereby improving the mixing uniformity between the electrolyte and the solid energy storage material. Furthermore, this structure generates localized vortices during flow, changing the flow field around the inverted cone, thus achieving more thorough contact between the electrolyte and the solid energy storage material. (Refer to...) Figure 4 and Figure 5 , Figure 4 This is a schematic diagram showing the results of a COMSOL simulation of the liquid flow velocity inside an existing cylindrical storage tank. Figure 5 These are schematic diagrams illustrating the COMSOL simulation results for the liquid flow velocity inside the storage tank provided in this application. In these two diagrams, the whiter a certain part of the cross-section is, the faster the liquid flow velocity is at that part. A comparison shows that... Figure 5 Compare Figure 4 The white area is larger on the cross-section shown, indicating that the area with a faster overall fluid flow velocity is larger, and that in the same location, Figure 5 Average Figure 4 The higher liquid flow velocity demonstrates that the tank structure provided in this application, compared to the cylindrical structure in the prior art, possesses a flow field more conducive to solid-liquid reactions. To verify the accuracy of this conclusion, a comparative experiment was designed, using the electrolyte tank structure as the sole variable. One group used a conventional cylindrical reagent bottle from the prior art, while the other group used the tank structure provided in this application. Equal amounts of the same solid energy storage material, positive and negative electrolytes, and battery components made of the same material were compared through charge-discharge tests. The results are referenced... Figure 6 , Figure 6 The comparison chart of test results between the storage tank provided in this application and the storage tank used in the prior art shows that, from the horizontal axis, the storage tank provided in this application has a larger charging and discharging capacity than the storage tank used in the prior art. Statistical analysis shows that, in 100 charge-discharge cycles, the storage tank (reagent bottle) used in the prior art has an average discharge capacity of 449 mAh, a solid utilization rate of 55.5%, and an average coulombic efficiency of 99.6%. The storage tank provided in this application (cylindrical-inverted conical structure) has an average discharge capacity of 490 mAh, a solid utilization rate of 87.3%, and an average coulombic efficiency of 99.9%. These comparative results demonstrate that the structure provided in this application helps to enhance the reaction between the electrolyte and the solid energy storage material, increasing the solid utilization rate by 31.8%.

[0049] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A solid-liquid hybrid flow battery electrolyte storage tank, characterized in that, include: The tank has a main body receiving section and a flow guiding section that are interconnected, the flow guiding section being located below the main body receiving section; A cover is placed on top of the tank body, and the cover has a liquid inlet. A liquid outlet is located at the bottom of the tank. A sieve plate is disposed in the main body receiving part, and a plurality of through holes with a size smaller than that of the solid energy storage material placed on the sieve plate are provided thereon; The flow guide and receiving portion has a shape in which the diameter gradually decreases from top to bottom.

2. The solid-liquid hybrid flow battery electrolyte storage tank according to claim 1, characterized in that, The shape of the flow guide and receiving part is an inverted cone.

3. The solid-liquid hybrid flow battery electrolyte storage tank according to claim 2, characterized in that, The main body housing is cylindrical in shape.

4. The solid-liquid hybrid flow battery electrolyte storage tank according to claim 3, characterized in that, The top edge of the flow guide portion that contacts the cylinder has the same diameter as the main body portion.

5. The solid-liquid hybrid flow battery electrolyte storage tank according to claim 4, characterized in that, At least one of the sieve plates is located at or above the connection point between the main body receiving part and the flow guiding receiving part at a preset height position.

6. The solid-liquid hybrid flow battery electrolyte storage tank according to claim 5, characterized in that, The bottom diameter of the flow guide and receiving part is equal to the diameter of the liquid outlet.

7. The solid-liquid mixed-flow battery electrolyte storage tank according to any one of claims 1-6, characterized in that, Also includes: A liquid outlet switch component is disposed on the liquid outlet.

8. The solid-liquid mixed-flow battery electrolyte storage tank according to any one of claims 1-6, characterized in that, The cover has a vertically downward extending edge around its periphery, and the inner side of the extending edge is provided with a thread that matches the thread around the upper end of the tank. The liquid inlet is located at the center of the surface of the cover, and the liquid inlet has a first threaded hole that matches the diameter of the feed pipe.

9. The solid-liquid mixed-flow battery electrolyte storage tank according to any one of claims 1-6, characterized in that, The liquid outlet has a second threaded hole that matches the diameter of the discharge pipe.

10. The solid-liquid mixed-flow battery electrolyte storage tank according to any one of claims 1-6, characterized in that, Also includes: A support mechanism is provided below the tank to provide support for the tank.

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