Flow battery stack integration device

Abstract

The present specification relates to the technical field of liquid flow battery, and specifically discloses a liquid flow battery stack integrated device, which comprises a storage seat internally storing cooling liquid; a placing table arranged on both sides of the storage seat, the upper end of the placing table being provided with a plurality of placing grooves for placing a stack group; a plurality of fluid pipes arranged inside the storage seat, the two ends of the fluid pipes penetrating through the storage seat and being connected with the inlet and outlet liquid ends of the stack group through pipelines to form an electrolyte circulation loop; a plurality of heat dissipation fins arranged around the outside of the corresponding fluid pipes and immersed in the cooling liquid; a plurality of ventilation holes, each of which is arranged at the bottom of the corresponding placing groove; a plurality of heat dissipation air ducts penetrating through the bottom and the upper part of the storage seat, the heat dissipation air ducts and the ventilation holes cooperating to form a heat dissipation air flow channel; and an exhaust assembly arranged at the lower end of the storage seat and used for exhausting air flow into the ventilation holes and the heat dissipation air ducts for heat dissipation. The above scheme significantly improves the heat dissipation efficiency of the liquid flow battery stack.

Description

Technical Field

[0001] This specification relates to the field of flow battery technology, and in particular to an integrated device for a flow battery stack. Background Technology

[0002] The output power of a megawatt-class vanadium redox flow battery is determined by the size and number of the stack, while the energy storage capacity is determined by the volume of the electrolyte. This characteristic makes its design and installation very flexible, and the power and capacity can be easily adjusted according to specific needs, making it particularly suitable for large-scale, high-capacity, and long-term energy storage applications.

[0003] However, existing megawatt-class vanadium redox flow batteries rely solely on wind turbines for centralized heat dissipation of the stack. During the heat dissipation process, heat is easily transferred to the stack for reabsorption, resulting in low heat dissipation efficiency, increased energy consumption, and low power generation efficiency.

[0004] There is currently no effective solution to the above problems. Utility Model Content

[0005] This specification provides an integrated device for a flow battery stack to address the problem of low heat dissipation efficiency in existing flow battery stacks.

[0006] This specification provides an embodiment of a flow battery stack integration device, comprising:

[0007] A storage base, wherein the interior of the storage base forms a storage cavity for storing coolant;

[0008] A placement platform is provided on both sides of the storage base. The upper end of the placement platform is provided with multiple placement slots for placing fuel cell stacks.

[0009] Multiple fluid tubes are arranged inside the storage cavity, with both ends of the fluid tubes extending out of the storage base to connect with the inlet and outlet liquid ends of the fuel cell stack to form an electrolyte circulation loop;

[0010] Multiple heat dissipation fins are arranged around the outer wall of the corresponding fluid tube;

[0011] Multiple ventilation holes, each of which is located at the bottom of the corresponding placement slot;

[0012] Multiple heat dissipation ducts are provided, which penetrate the storage base and together with the ventilation holes form a heat dissipation airflow channel;

[0013] An exhaust assembly is located at the lower end of the storage base and is used to deliver airflow into the ventilation holes and the heat dissipation duct for heat dissipation.

[0014] In one embodiment, the exhaust assembly includes:

[0015] A gas collection hood is installed at the lower end of the placement platform and communicates with the ventilation hole;

[0016] A sealing cover is provided at the lower end of the storage base and connects the lower ends of the plurality of heat dissipation ducts;

[0017] A fan, wherein the exhaust port of the fan is connected to the interior of the sealing cover;

[0018] An exhaust pipe is used to connect the exhaust port of the fan to the interior of the gas collection hood.

[0019] In one embodiment, the fluid pipes are arranged in a serpentine pattern at equal intervals inside the storage base.

[0020] In one embodiment, the fluid pipes and the heat dissipation ducts are distributed in a staggered manner at equal intervals in the lateral direction.

[0021] In one embodiment, the upper surface of the placement platform is provided with a plurality of venting slots, each of the venting slots being connected to the corresponding placement slot, and the venting slots being arranged around the periphery of the corresponding fuel cell stack.

[0022] In one embodiment, the placement slot is provided with an isolation bump for elevating the fuel cell stack.

[0023] In one embodiment, the fluid tube is made of copper or aluminum.

[0024] In one embodiment, the heat dissipation duct adopts a hollow cuboid structure; and / or,

[0025] The heat dissipation duct is made of aluminum.

[0026] In one embodiment, the storage base is made of a corrosion-resistant alloy material.

[0027] In one embodiment, the apparatus further includes:

[0028] Support bases are disposed on the outer sides of the storage base for supporting and placing the storage base.

[0029] This specification provides an integrated flow battery stack device that integrates liquid cooling and air cooling for heat dissipation. The liquid cooling system (fluid pipes, heat dissipation fins, coolant) efficiently removes the core heat generated during electrolyte circulation; the air cooling system (ventilation holes, heat dissipation ducts, exhaust components) directly cools the surface of the stack and cools the coolant in the storage chamber. These two cooling methods complement each other, creating a synergistic cooling effect and fundamentally solving the heat dissipation problem of high-power battery stacks. By providing independent ventilation holes and placement slots for each stack and implementing global airflow for coolant dissipation, uniform cooling is ensured for all stacks and different parts within each stack, effectively preventing localized overheating and heat transfer and absorption between stacks, thus guaranteeing the consistency and stability of the battery system. This solution addresses the low heat dissipation efficiency of flow battery stacks in existing technologies, effectively improving heat dissipation efficiency, saving energy, and ultimately increasing power generation efficiency.

[0030] Specific embodiments of the present invention are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope. Features described and / or shown for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

[0031] It should be emphasized that the term "comprising / including" as used herein refers to the presence of a feature, part, step, or component, but does not exclude the presence or addition of one or more other features, parts, steps, or components. Attached Figure Description

[0032] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of this invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely schematic to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, under the guidance of this invention, can select various possible shapes and proportions to implement this invention according to specific circumstances. In the drawings:

[0033] Figure 1 A schematic diagram of the structure of a flow battery stack integration device according to one embodiment of this specification is shown;

[0034] Figure 2 A schematic diagram of the structure of a flow battery stack integration device according to one embodiment of this specification is shown;

[0035] Figure 3A schematic diagram of the structure of a flow battery stack integration device according to one embodiment of this specification is shown;

[0036] Figure 4 A schematic diagram of the structure of a flow battery stack integration device according to one embodiment of this specification is shown;

[0037] Figure 5 A schematic diagram of the structure of a flow battery stack integration device according to one embodiment of this specification is shown;

[0038] Figure 6 A schematic diagram of the structure of a flow battery stack integration device according to one embodiment of this specification is shown;

[0039] Figure 7 A schematic diagram of the structure of a flow battery stack integration device in one embodiment of this specification is shown.

[0040] The reference numerals in the above figures are as follows:

[0041] 1. Storage base; 2. Placement platform; 3. Placement slot; 4. Ventilation hole; 5. Isolation protrusion; 6. Exhaust slot; 7. Fluid pipe; 8. Heat dissipation fins; 9. Heat dissipation duct; 10. Gas collection hood; 11. Sealing cover; 12. Fan; 13. Exhaust pipe; 14. Fuel cell stack. Detailed Implementation

[0042] The principles and spirit of this specification will now be described with reference to several exemplary embodiments. It should be understood that these embodiments are given merely to enable those skilled in the art to better understand and implement this specification, and are not intended to limit the scope of this specification in any way. Rather, these embodiments are provided to make this disclosure more thorough and complete, and to fully convey the scope of this disclosure to those skilled in the art.

[0043] The details of this utility model can be more clearly understood by referring to the accompanying drawings and the description of specific embodiments. However, the specific embodiments of this utility model described herein are only for explaining the purpose of this utility model and should not be construed as limiting this utility model in any way. Under the teachings of this utility model, those skilled in the art can conceive of any possible modifications based on this utility model, and these should all be considered to fall within the scope of this utility model. It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there may be an intervening element. The terms "mounted," "connected," and "connected" should be interpreted broadly, for example, it can be a mechanical connection or an electrical connection, or it can be a connection within two elements, which can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this specification. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0045] Through research, the inventor of the utility model discovered that existing megawatt-level vanadium redox flow batteries rely on fans to centrally dissipate heat from the stack, which fails to dissipate heat from the internal fluids. During the heat dissipation process, heat is easily transferred to the stack and reabsorbed, resulting in low heat dissipation efficiency, increased energy consumption, and low power generation efficiency.

[0046] Based on the above problems, this specification provides an integrated device for a flow battery stack. Figures 1 to 7 A schematic diagram of the structure of a flow battery stack integration device according to one embodiment of this specification is shown. Figures 1 to 7 As shown, the flow battery stack integration device in the embodiments of this specification may include: a storage base 1, a placement platform 2, multiple fluid pipes 7, multiple heat dissipation fins 8, multiple ventilation holes 4, multiple heat dissipation ducts 9, and an exhaust assembly.

[0047] The storage base 1 has an internal storage cavity for storing coolant. In one embodiment, the coolant can be a water-based coolant. For example, the coolant can be deionized water, an aqueous solution of ethylene glycol, or an aqueous solution of propylene glycol. In another embodiment, the coolant can be insulating oil. The storage base 1 is the core substrate of the flow battery stack integration device, and its interior forms a closed storage cavity for filling with coolant. The storage base 1 not only serves as a liquid-cooled container but also as a load-bearing structural frame, preferably made of a corrosion-resistant and high-structural-strength material (such as 316L stainless steel) to support the weight of all the stacks 14 on it and withstand the enormous fastening forces generated during the assembly of the stacks 14.

[0048] Placement platforms 2 are located on both sides of storage base 1. Placement platforms 2 can be integrally formed with storage base 1 or fixedly connected. Multiple rows of placement slots 3 are formed on the upper surface of placement platforms 2. The dimensions of these placement slots 3 are precisely adapted to the shape of fuel cell stack 14 to ensure that each fuel cell stack 14 can be stably positioned and installed.

[0049] Multiple fluid pipes 7 are arranged inside the storage chamber. The two ends of the fluid pipes 7 extend out of the storage base 1 and are used to connect with the inlet and outlet liquid terminals of the fuel cell stack 14 to form an electrolyte circulation loop. The two ends of the fluid pipes 7 extend out of the side wall or end face of the storage base 1 and are connected with the inlet and outlet liquid terminals of the corresponding fuel cell stack 14 to form a complete electrolyte circulation loop.

[0050] like Figure 3 As shown, in some embodiments of this specification, the fluid pipes 7 are arranged in a serpentine, equidistant manner inside the storage base 1. Multiple fluid pipes 7 are arranged in a serpentine, coiled manner within the storage cavity of the storage base 1. This design significantly extends the flow path of the electrolyte in the coolant and the heat exchange time.

[0051] In one embodiment, a circulation pump may be provided in the electrolyte circulation loop to drive the electrolyte to flow in the electrolyte circulation loop.

[0052] Heat dissipation fins 8 can be arranged around the outer wall of the corresponding fluid pipe 7. Multiple heat dissipation fins 8 are tightly fixed (e.g., welded or nested) to the outer wall of each section of fluid pipe 7 in a surrounding manner. These fins 8 significantly increase the effective contact heat dissipation area between the fluid pipe 7 and the surrounding coolant, as if heat dissipation fins are added to the fluid pipe 7, so that the heat in the electrolyte can be transferred to the coolant more quickly and fully.

[0053] Each ventilation hole 4 is located at the bottom of the corresponding placement slot 3. The ventilation holes 4 are located at the bottom of each placement slot 3, so that airflow can directly enter from below and blow on the bottom and sides of the fuel cell stack 14 located in the slot, thereby directly and forcibly cooling it.

[0054] A heat dissipation duct 9 is provided through the storage base 1. Multiple heat dissipation ducts 9 can be hollow pipes (e.g., aluminum pipes with rectangular cross-sections) that run through the bottom and top of the storage base 1. Multiple heat dissipation ducts 9 are immersed in coolant, and their pipe walls become the interface for heat exchange between the coolant and the airflow inside the heat dissipation duct 9.

[0055] The exhaust assembly is located at the lower end of the storage base 1 and is used to deliver airflow into the ventilation holes 4 and the heat dissipation ducts 9 for heat dissipation. The exhaust assembly is the power and distribution center of the air-cooled system.

[0056] The flow battery stack integration device in the above embodiments creatively integrates liquid cooling and air cooling into one unit. The liquid cooling system (fluid pipe 7, heat dissipation fins 8, coolant) is responsible for efficiently removing the core heat generated during electrolyte circulation; the air cooling system (ventilation holes 4, heat dissipation ducts 9, exhaust components) is responsible for directly cooling the surface of the stack 14 and cooling the coolant in the storage chamber. The two heat dissipation methods complement each other, forming a synergistic heat dissipation effect, fundamentally solving the heat dissipation problem of high-power stacks. By setting independent ventilation holes 4 and placement slots 3 for each stack 14 and implementing global air duct heat dissipation for the coolant, it is ensured that all stack 14 and different parts of the stack 14 can receive uniform cooling, effectively preventing local overheating and heat transfer and absorption between stacks, ensuring the consistency and stability of the battery system. By highly integrating the heat dissipation function into the main structure of the storage base 1, the independent and bulky external heat exchanger and complex air duct layout of traditional systems are eliminated. The addition of fluid pipe 7 and heat dissipation fins 8 maximizes the heat dissipation area within a limited space, reducing the demand for external pump power and fan 12, thereby lowering the overall energy consumption and operating costs of the system. Effective temperature control is key to extending the life of flow batteries. By maintaining the stack and electrolyte within the optimal operating temperature range, material aging and side reaction rates are slowed down, significantly improving the cycle life and long-term reliability of the entire battery system. As a complete system, this integrated device is robust in structure and clearly laid out, greatly facilitating the on-site installation, maintenance, and expansion of megawatt-level battery systems, providing a standardized and efficient solution for large-scale energy storage power station applications.

[0057] like Figures 5 to 7As shown, in some embodiments of this specification, the exhaust assembly may include a gas collection hood 10, a sealing cover 11, a fan 12, and an exhaust pipe 13. The gas collection hood 10 is disposed at the lower end of the placement platform 2 and communicates with the ventilation holes 4. The gas collection hood 10 is fixedly disposed below the placement platform 2, converging and connecting the lower ends of all ventilation holes 4. The sealing cover 11 is disposed at the lower end of the storage base 1 and communicates with the lower ends of multiple heat dissipation ducts 9. The sealing cover 11 is fixed below the storage base 1, converging and connecting the lower inlets of all heat dissipation ducts 9. The exhaust port of the fan 12 communicates with the interior of the sealing cover 11, serving as the source of system airflow. The exhaust pipe 13 connects the exhaust port of the fan 12 to the interior of the gas collection hood 10.

[0058] After the fan 12 starts, part of the airflow generated directly enters the sealing cover 11, flows upward through all the heat dissipation air ducts 9, absorbs the heat of the coolant and is discharged from the top, thus achieving indirect air cooling of the coolant; the other part of the airflow is transported to the gas collection cover 10 through the exhaust pipe 13, and then evenly distributed to each ventilation hole 4 to directly air cool the fuel cell stack 14.

[0059] In some embodiments of this specification, the fluid pipes 7 and the heat dissipation ducts 9 are arranged in a staggered, equidistant manner in the lateral direction. This arrangement avoids heat dissipation dead zones, ensures the uniformity of the thermal field inside the coolant, and maximizes the heat dissipation efficiency of the entire storage chamber.

[0060] In some embodiments of this specification, the upper surface of the placement platform 2 is provided with multiple exhaust slots 6, each exhaust slot 6 communicating with a corresponding placement slot 3, and the exhaust slots 6 are arranged around the periphery of the corresponding fuel cell stack 14. The exhaust slots 6 are located on the upper surface of the placement platform 2, surrounding each fuel cell stack 14. The exhaust slots 6 work in conjunction with the ventilation holes 4 to guide airflow to flow smoothly along the surface of the fuel cell stack 14 and then discharge it, achieving efficient heat dissipation.

[0061] In some embodiments of this specification, the placement groove 3 is provided with an isolation protrusion 5 for elevating the fuel cell stack 14. The isolation protrusion 5 is located at the bottom of the placement groove 3, elevating the fuel cell stack 14 and ensuring that there is a gap between its bottom and the bottom surface of the placement groove 3, preventing the fuel cell stack 14 from blocking the ventilation hole 4 and ensuring unobstructed airflow at the bottom.

[0062] In some embodiments of this specification, the fluid tube 7 is made of copper or aluminum. Copper and aluminum are metals with high thermal conductivity. Choosing these two materials to manufacture the fluid tube 7 can greatly reduce the thermal resistance of the tube wall itself, allowing heat in the electrolyte to be transferred to the tube wall almost unimpeded and quickly, and then dissipated to the coolant through the heat dissipation fins 8. This choice directly improves the core heat exchange efficiency of the liquid cooling circuit. In addition, copper and aluminum also have good processing properties and are easy to bend into the required serpentine structure. It is understood that other materials with good thermal conductivity can also be used to manufacture the fluid tube 7.

[0063] In some embodiments of this specification, the heat dissipation fins 8 may be made of a material with high thermal conductivity and corrosion resistance. In one embodiment, the heat dissipation fins 8 may be made of aluminum or an aluminum alloy.

[0064] In some embodiments of this specification, the heat dissipation duct 9 adopts a hollow cuboid structure. This regular shape (especially a rectangular cross-section) of the duct facilitates a neat and dense layout within the storage base 1, forming an efficient staggered distribution with the fluid pipes 7 to maximize space utilization. Its flat walls also provide a larger effective heat exchange area, which is beneficial for heat exchange with the coolant.

[0065] In some embodiments of this specification, the heat dissipation duct 9 is made of aluminum. Aluminum is an excellent thermal conductor, ensuring that the airflow can fully absorb the heat of the coolant as it passes through the duct. At the same time, aluminum has low density and light weight; using an aluminum duct does not significantly increase the weight of the entire storage base 1, which is beneficial for the lightweight design of the device. Aluminum also exhibits good corrosion resistance in a coolant environment.

[0066] In some embodiments of this specification, the storage base 1 is made of a corrosion-resistant alloy material. Since the storage base 1 is in long-term contact with the coolant and exists in an environment that may contain trace amounts of acidic electrolyte vapor, its corrosion resistance is crucial. Using a corrosion-resistant alloy (such as austenitic stainless steel 316L) can prevent the casing from perforating or leaking due to corrosion, ensuring the sealing and structural integrity of the device throughout its lifespan, preventing metal corrosion ions from contaminating the coolant, and avoiding the formation of scale on the fluid pipes 7 and heat dissipation fins 8, which would affect heat exchange efficiency. Such alloys themselves possess high mechanical strength, sufficient to withstand the pressure of the internal coolant, the weight of the fuel cell stack 14, and the assembly fastening forces, achieving functional integration of the container and the load-bearing frame.

[0067] In some embodiments of this specification, the flow battery stack integration device may further include a support base. The support base is disposed on both sides of the storage base 1 to support and hold the storage base 1. The support base is constructed of robust steel. As a connecting component between the device and the foundation ground or mounting platform, the support base provides a stable base for the entire integration device (including a full load of coolant and all stacks 14), preventing tipping and ensuring operational safety. The support base can also raise the height of the storage base 1, providing convenient operating space for the installation and maintenance of the bottom venting components (such as servicing the blower 12). The support base can also distribute the concentrated load of the device over a larger area, protecting the mounting foundation and reducing vibration during operation.

[0068] The flow battery stack integration device in the above embodiments will be described below with reference to a specific example.

[0069] This specific embodiment provides a flow battery stack integration device, including a storage base 1, a placement platform 2 disposed on the opposite side of the storage base 1, and a plurality of stack assemblies 14. The storage base 1 stores coolant, and the upper end of the placement platform 2 is provided with a plurality of placement slots 3 for placing the stack assemblies 14. The storage base 1 is provided with a plurality of serpentine fluid pipes 7, the two ends of which pass through to the outside of the storage base 1 and are used to connect to the inlet and outlet of the stack assemblies 14 to realize fluid circulation. A plurality of heat dissipation fins 8 are arranged around the outside of the fluid pipes 7.

[0070] The placement platform 2 is provided with multiple ventilation holes 4 that correspond one-to-one with and are connected to the placement slots 3. Multiple heat dissipation air ducts 9 are provided between the bottom of the storage base 1 and the storage base 1. The storage base 1 is provided with an exhaust component that discharges airflow into the ventilation holes 4 and the heat dissipation air ducts 9 for heat dissipation.

[0071] The flow battery stack integration device in the above embodiment stores multiple stacks 14 via a placement tank 3 on a placement platform 2. The inlet and outlet liquid terminals on each stack 14 are connected to the two ends of a serpentine fluid pipe 7 located within the storage base 1. A circulation pump circulates the fluid within the stack 14. During circulation within the fluid pipe 7, the serpentine design increases the flow path within the storage base 1, and the heat dissipation fins 8 outside the fluid pipe 7 dissipate the heat of the fluid, which is absorbed by the stored coolant, thus achieving heat dissipation for the circulating fluid. Furthermore, airflow is introduced into the ventilation holes 4 and the cooling duct 9 via an exhaust assembly. The airflow exits from the ventilation holes 4 to dissipate heat from the independently stored stacks 14, preventing heat transfer between them. The airflow passes through the cooling duct 9, where it absorbs heat from the coolant and is then discharged with the airflow, ensuring effective cooling of the coolant. Compared to existing technologies, this effectively improves the centralized heat dissipation of the battery stack, reduces energy consumption, and increases power generation efficiency.

[0072] like Figures 1 to 7As shown, the flow battery stack integration device in this specific embodiment may include a storage base 1. The storage base 1 is the main body of the entire integration device, made of high-strength, corrosion-resistant alloy material, and has good structural stability and sealing performance. It can store coolant inside to absorb and dissipate the heat generated during the operation of the stack 14. Placement platforms 2 are fixed to both the front and rear sides of the storage base 1. The placement platforms 2 can be integrally formed with the storage base 1, possessing high structural strength and rigidity. Multiple equally spaced placement slots 3 are formed on the upper surface of the placement platform 2 for placing the stack 14. The dimensions of the placement slots 3 are adapted to the shape of the stack 14, ensuring that the stack 14 can be stably placed within the slots.

[0073] The fuel cell stack 14, composed of multiple individual cell units, is the core component of the flow battery, responsible for the conversion between electrical and chemical energy. The integrated flow battery stack may also include multiple fluid pipes 7. The inlet and outlet of the fuel cell stack 14 are connected to the two ends of the fluid pipes 7 via pipes to achieve fluid circulation. The fluid pipes 7 are arranged in a serpentine pattern at equal intervals inside the storage base 1. The fluid pipes 7 can be made of a metal material with good thermal conductivity, such as copper or aluminum, to enhance heat transfer efficiency. Multiple heat dissipation fins 8 are fixed in a ring at equal intervals around the outside of the fluid pipes 7. The heat dissipation fins 8 increase the surface area, further improving the heat exchange efficiency between the fluid pipes 7 and the coolant. The two ends of the fluid pipes 7 extend to the outside of the storage base 1.

[0074] Multiple ventilation holes 4 are provided on the upper surface of the placement platform 2. Each ventilation hole 4 is connected to a corresponding placement slot 3, allowing airflow to smoothly pass through the ventilation hole 4 into the placement slot 3 for heat dissipation of the fuel cell stack 14. Multiple heat dissipation air ducts 9 are fixedly connected to the bottom of the storage base 1. The heat dissipation air ducts 9 adopt a hollow rectangular aluminum tube structure, which has good thermal conductivity and structural strength, and can also be made of other thermally conductive materials. The heat dissipation air ducts 9 and the ventilation holes 4 cooperate with each other to form a complete heat dissipation airflow channel.

[0075] The fluid pipes 7 and the heat dissipation ducts 9 are both distributed horizontally at equal intervals.

[0076] Please see Figures 5 to 7The storage base 1 is equipped with an exhaust assembly that discharges airflow into the ventilation holes 4 and heat dissipation ducts 9 for heat dissipation. The exhaust assembly may include a gas collection hood 10, a sealing cover 11, a booster fan 12, and an exhaust pipe 13. The gas collection hood 10 is fixed to the lower surface of the placement platform 2, located outside the ventilation holes 4, and is used to centrally connect the ventilation holes 4. The sealing cover 11 is fixed to the lower surface of the storage base 1, connecting the lower ends of multiple heat dissipation ducts 9 to ensure that airflow can flow evenly through each heat dissipation duct 9. The exhaust port of the booster fan 12 is connected to the lower surface of the sealing cover 11, and the exhaust port is connected to the lower end of the gas collection hood 10 through the connected exhaust pipe 13, providing power to the entire heat dissipation system and forcing airflow into the heat dissipation ducts 9 and ventilation holes 4 to achieve efficient heat dissipation of the fuel cell stack 14 and coolant.

[0077] like Figures 1 to 3 As shown, the upper surface of the placement platform 2 has multiple exhaust slots 6. Each group consists of four exhaust slots 6, and these groups are connected to their respective placement slots 3 and located on the four sides of the fuel cell stack 14. The exhaust slots 6 help guide airflow to evenly conform to the surface of the fuel cell stack 14, enhancing heat dissipation. Multiple annularly distributed isolation protrusions 5 are also fixed inside the placement slots 3 to support the fuel cell stack 14 and prevent it from directly contacting and blocking the placement slots 3, thus affecting the airflow passage of the ventilation holes 4. Support bases are fixed to the left and right sides of the storage base 1. These support bases are made of robust steel structures, providing stable support and a foundation for the entire integrated device.

[0078] The steps for using and installing the flow battery stack integration device in the above embodiments are as follows.

[0079] Place storage base 1 on the pre-prepared foundation, ensuring it is level and stable.

[0080] Place the fuel cell stack 14 sequentially into the placement slot 3 of the placement platform 2. Note that the inlet and outlet positions of the fuel cell stack 14 should correspond to the connection end of the fluid pipe 7.

[0081] Connect the two ends of the fluid pipe 7 to the inlet and outlet of the fuel cell stack 14 respectively, ensuring a tight and leak-free connection. Connect the circulation pump in the middle. The fluid pipe 7 is arranged in a serpentine pattern inside the storage base 1, and the heat dissipation fins 8 surrounding it are immersed in the coolant inside the storage base 1.

[0082] Install the exhaust assembly. First, fix the air collection hood 10 to the lower end of the placement platform 2, ensuring that it corresponds to the position of the ventilation hole 4; then install the sealing cover 11 at the lower end of the storage base 1, connecting the multiple heat dissipation air ducts 9; then connect the booster fan 12 to the lower end of the sealing cover 11, and connect it to the air collection hood 10 through the exhaust pipe 13.

[0083] Check the installation of the entire integrated unit to ensure that all components are securely connected, the fluid pipe 7 and the heat dissipation duct 9 are unobstructed, and the exhaust assembly is functioning normally.

[0084] During operation, when the fuel cell stack 14 is working, the heat generated is carried away by the circulating fluid in the fluid pipe 7. During the circulation process, the fluid passes through the serpentine fluid pipe 7 and comes into full contact with the heat dissipation fins 8, and the heat is transferred to the coolant in the storage base 1.

[0085] At the same time, the booster fan 12 starts, forcing the airflow into the sealing cover 11. The airflow rises through the heat dissipation duct 9, absorbing the heat of the coolant in the process, and then is discharged from the top of the heat dissipation duct 9.

[0086] Another part of the airflow enters the gas collection hood 10 through the exhaust pipe 13, and then is evenly discharged into the placement slot 3 through the ventilation hole 4 to directly dissipate heat from the fuel cell stack 14. The airflow flows along the four sides of the fuel cell stack 14, carrying away the heat on the surface of the fuel cell stack 14, and finally is discharged from the exhaust slot 6, avoiding the heat transfer and absorption between the fuel cell stacks 14.

[0087] This comprehensive heat dissipation method effectively controls the temperature of the fuel cell stack 14 and the coolant, ensuring the efficient and stable operation of the flow battery. In one embodiment, the liquid battery can be a megawatt-level vanadium redox flow battery.

[0088] The integrated device for the vanadium redox flow battery stack described in the above embodiments achieves efficient heat dissipation for the stack 14 and coolant by incorporating components such as a storage base 1, a placement platform 2, a stack 14, a fluid pipe 7, heat dissipation fins 8, ventilation holes 4, a heat dissipation duct 9, and an exhaust assembly. The serpentine fluid pipe 7 and heat dissipation fins 8 design increases the heat exchange area and time between the fluid and coolant, improving heat dissipation efficiency. The combined use of ventilation holes 4 and heat dissipation duct 9 allows airflow to flow evenly across the stack 14 and coolant, further enhancing the heat dissipation effect. The exhaust assembly provides strong power support for the entire heat dissipation system, ensuring a stable supply and circulation of airflow. Compared with existing technologies, this integrated device effectively solves the problems of low heat dissipation efficiency and high energy consumption in traditional vanadium redox flow batteries, reduces equipment operating costs, improves power generation efficiency and battery lifespan, and provides a more reliable and efficient solution for the application of megawatt-level vanadium redox flow batteries in large-scale energy storage.

[0089] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. For details, please refer to the foregoing descriptions of the relevant processing embodiments; they will not be repeated here.

[0090] It should be understood that the above description is for illustrative purposes and not for limitation. Many embodiments and applications beyond the provided examples will become apparent to those skilled in the art upon reading the above description. Therefore, the scope of this specification should not be determined by referring to the above description.

[0091] The above description is merely a preferred embodiment of this specification and is not intended to limit this specification. Various modifications and variations can be made to the embodiments described herein by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this specification should be included within the scope of protection of this specification.

Claims

1. A flow battery stack integration device, characterized in that, include: A storage base, wherein the interior of the storage base forms a storage cavity for storing coolant; A placement platform is provided on both sides of the storage base. The upper end of the placement platform is provided with multiple placement slots for placing fuel cell stacks. Multiple fluid tubes are arranged inside the storage cavity, with both ends of the fluid tubes extending out of the storage base to connect with the inlet and outlet liquid ends of the fuel cell stack to form an electrolyte circulation loop; Multiple heat dissipation fins are arranged around the outer wall of the corresponding fluid tube; Multiple ventilation holes, each of which is located at the bottom of the corresponding placement slot; Multiple heat dissipation ducts are provided, which penetrate the storage base and together with the ventilation holes form a heat dissipation airflow channel; An exhaust assembly is located at the lower end of the storage base and is used to deliver airflow into the ventilation holes and the heat dissipation duct for heat dissipation.

2. The flow battery stack integration device according to claim 1, characterized in that, The exhaust assembly includes: A gas collection hood is installed at the lower end of the placement platform and communicates with the ventilation hole; A sealing cover is provided at the lower end of the storage base and connects the lower ends of the plurality of heat dissipation ducts; A fan, wherein the exhaust port of the fan is connected to the interior of the sealing cover; An exhaust pipe is used to connect the exhaust port of the fan to the interior of the gas collection hood.

3. The flow battery stack integration device according to claim 1, characterized in that, The fluid pipes are arranged in a serpentine pattern at equal intervals inside the storage base.

4. The flow battery stack integration device according to claim 1, characterized in that, The fluid pipes and the heat dissipation ducts are distributed in a staggered manner at equal intervals in the horizontal direction.

5. The flow battery stack integration device according to claim 1, characterized in that, The upper surface of the placement platform is provided with multiple venting slots, each of which is connected to the corresponding placement slot, and the venting slots are arranged around the periphery of the corresponding fuel cell stack.

6. The flow battery stack integration device according to claim 1, characterized in that, The placement slot is provided with an isolation protrusion for elevating the fuel cell stack.

7. The flow battery stack integration device according to claim 1, characterized in that, The fluid pipe is made of copper or aluminum.

8. The flow battery stack integration device according to claim 1, characterized in that, The heat dissipation duct adopts a hollow cuboid structure; and / or The heat dissipation duct is made of aluminum.

9. The flow battery stack integration device according to claim 1, characterized in that, The storage base is made of corrosion-resistant alloy material.

10. The flow battery stack integration device according to claim 1, characterized in that, Also includes: Support bases are disposed on the outer sides of the storage base for supporting and placing the storage base.

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