A capacity module for a flow battery

Abstract

The utility model belongs to the technical field of liquid flow battery energy storage, concretely relates to a kind of capacity module of liquid flow battery, including box, electrolyte storage tank and heat tracing module being installed in the box, the heat tracing module includes multiple installation templates, installation groove being opened in the installation module, heat tracing band and sealing layer being arranged in the installation groove, the installation groove is U-shaped circuitous arrangement serpentine, the heat tracing band is laid in the installation groove, the sealing layer is covered on the installation template, for the heat tracing band is sealed in the installation groove and reflects heat quantity.The capacity module of liquid flow battery of the utility model is through setting heat tracing module, it can be used after unfolding, reduces construction difficulty and cost, improves the uniformity and reliability of electrolyte storage tank temperature control.

Description

Technical Field

[0001] This utility model relates to the field of flow battery energy storage technology, specifically to a flow battery capacity module. Background Technology

[0002] Flow batteries, as an electrochemical energy storage technology, achieve the interconversion of electrical energy and chemical energy through reversible redox reactions (reversible changes in valence states) between the active materials in the electrolyte solutions at the positive and negative electrodes. During the reaction, fluctuations in electrolyte temperature significantly affect the electrolyte's conductivity and viscosity. The electrolyte activity of vanadium redox flow batteries is temperature-sensitive; low-temperature environments (e.g., ≤5℃) lead to decreased ion conduction efficiency and a significant reduction in battery charge-discharge performance.

[0003] In existing technologies, heat tracing technology borrows from the heating methods of chemical storage tanks, using electric heating tape and polyurethane foam insulation. The heating tape is laid one by one, which requires on-site cutting and fixing. This results in low construction efficiency and uneven heat tracing due to human error, leading to high labor costs. Furthermore, the traditional insulation layer is separated from the heating tape, and long-term vibration can easily cause poor contact or breakage of the heating tape, which cannot meet the engineering requirements for rapid deployment of energy storage projects.

[0004] Therefore, it is necessary to provide new flow battery capacity modules. Utility Model Content

[0005] In view of this, the present invention provides a capacity module for a flow battery. By setting a heat tracing module, it can be used immediately after unfolding, which reduces the construction difficulty and cost, and improves the uniformity and reliability of temperature control in the electrolyte storage tank.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: a capacity module for a flow battery is provided, including: a housing, an electrolyte storage tank installed in the housing, and a heat tracing module. The heat tracing module includes multiple mounting templates, mounting grooves formed on the mounting module, a heat tracing cable disposed in the mounting groove, and a sealing layer. The mounting groove is arranged in a U-shaped, meandering serpentine pattern. The heat tracing cable is laid in the mounting groove, and the sealing layer is covered on the mounting templates to seal the heat tracing cable in the mounting groove and reflect heat.

[0007] Furthermore, the installation template is made of thermally insulated extruded polystyrene board, and the thermal conductivity of the installation template is ≤0.03W / (m²). K), compressive strength ≥250kPa, thickness 30-50mm.

[0008] Furthermore, the groove depth of the mounting groove is 10-15mm, and the width of the mounting groove matches the outer diameter of the heat tracing cable.

[0009] Furthermore, the heat tracing cable is made of tin-plated braided explosion-proof and flame-retardant single-fluorine wire, and the conductor resistance of the heat tracing cable is ≤0.05Ω / m, and the power density is 15-30W / m.

[0010] Furthermore, the heat tracing cable is made of nickel-plated copper wire braided into an explosion-proof and flame-retardant single-fluorine wire.

[0011] Furthermore, the sealing layer is an embossed aluminum foil layer with adhesive backing, and its thickness is 0.3-0.5mm.

[0012] Furthermore, the two ends of the heat tracing cable extend from the two ends of the mounting groove for connecting to a power source for power supply.

[0013] Furthermore, the spacing between adjacent tracing cables is 50-200mm.

[0014] Furthermore, the container body is a shipping container that is easy to transport, and the outside of the container body is provided with a hoisting interface.

[0015] Furthermore, the electrolyte storage tank is a sealed container that stores battery electrolyte inside, and the structural dimensions of the electrolyte storage tank are adapted to the internal structural dimensions of the box.

[0016] The beneficial effects of this utility model are as follows: The capacity module of the flow battery of this utility model includes a housing, an electrolyte storage tank installed inside the housing, and a heat tracing module. The heat tracing module includes multiple mounting templates, mounting grooves formed on the mounting module, a heat tracing cable disposed in the mounting groove, and a sealing layer. The multiple mounting templates are folded into a wavy shape. After being unfolded, the multiple mounting templates are laid under the electrolyte storage tank. The mounting grooves are arranged in a U-shaped, meandering serpentine pattern. The heat tracing cable is laid in the mounting groove, and the sealing layer is placed on the mounting template to seal the heat tracing cable in the mounting groove and reflect heat. By setting up a heat tracing module and folding multiple heat tracing modules into a wavy shape, the capacity module of the flow battery of this utility model can be used immediately after unfolding, which improves the efficiency of on-site installation and shortens the installation time. Moreover, the heat tracing module adopts a modular design, which can adapt to different sizes, has strong adaptability, and improves the uniformity and reliability of temperature control of the electrolyte storage tank. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a partial three-dimensional structural diagram of the capacity module of the flow battery according to an embodiment of the present invention (hidden parts of the casing and waterproof layer). Figure 2 This is a schematic diagram of the unfolded state of the heat tracing module (excluding the sealing layer) according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the folded state of the installation template according to an embodiment of this utility model; Figure 4 This is a three-dimensional structural diagram of the installation template and sealing layer of the hidden part of the heat tracing module according to an embodiment of this utility model; Figure 5 yes Figure 1 A magnified view of a portion of point A in the middle; Figure 6 This is a schematic diagram of the waterproof layer and fixing holes according to an embodiment of the present invention; Figure 7 This is a structural schematic diagram of the fastener according to an embodiment of the present utility model.

[0019] The component names and their numbers in the diagram are as follows: The capacity module of the flow battery is 100. Box body 1, hoisting interface 11, fork slot 12; Electrolyte storage tank 2; Heat tracing module 3, mounting template 31, mounting groove 32, heat tracing tape 33, sealing layer 34; Waterproof module 4, waterproof layer 41, fixing hole 42, fastener 43, bolt 431, washer 432. Detailed Implementation

[0020] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] It should be noted that when a component is referred to as "connected to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Throughout this specification, reference to "an embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of this application. Therefore, the phrases "in one embodiment," "in some embodiments," or "in some of these embodiments" appear in various places throughout the specification, and not all refer to the same embodiment. Furthermore, in one or more embodiments, a particular feature, structure, or characteristic may be combined in any suitable manner.

[0025] like Figure 1 As shown, this embodiment provides a flow battery capacity module 100, including a housing 1, an electrolyte storage tank 2 installed inside the housing 1, a heat tracing module 3, and a waterproof module 4. The housing 1 is used to house and install the electrolyte storage tank 2, the heat tracing module 3, and the waterproof module 4, and facilitates transportation; the electrolyte storage tank 2 is matched with the internal dimensions of the housing 1 to store the flow battery electrolyte; the heat tracing module 3 is used to maintain the temperature of the electrolyte in the electrolyte storage tank 2 at ≥5℃ to prevent the ion conduction efficiency in the electrolyte from decreasing due to low temperature; the waterproof module 4 is used to isolate external rainwater and dust, prevent moisture and other impurities from mixing into the electrolyte, and ensure the stability of battery operation.

[0026] In some embodiments, the container 1 is a six-sided cuboid structure. The container 1 utilizes a transportable shipping container with a standardized design, featuring a cuboid metal frame structure and fixed dimensions. The electrolyte storage tank 2 is securely installed within the container 1, preventing shaking or collisions during transportation or handling. The standardized container 1, used for placing and installing the electrolyte storage tank 2, allows for direct transport via various modes such as rail, road, and sea, without additional modifications, reducing transportation difficulty. The container 1 is constructed of high-strength steel, possessing impact and pressure resistance, and can withstand bumps and compression during transportation, protecting the internal electrolyte storage tank 2 and heat tracing module 3 from damage. Furthermore, the container 1 itself is an independent unit, internally housing the electrolyte storage tank 2, heat tracing module 3, and waterproof module 4, reducing on-site installation and commissioning time, suitable for rapid deployment, and applicable to the rapid establishment of energy storage projects in remote areas or emergency situations.

[0027] In some embodiments, the exterior of the container 1 is provided with a lifting interface 11, and the bottom of the container 1 is provided with a fork slot 12, which facilitates loading and unloading operations by forklifts or cranes. By providing the lifting interface 11 and the fork slot 1, mechanized loading and unloading is facilitated, reducing labor costs and improving transportation efficiency.

[0028] In some embodiments, the electrolyte storage tank 2 is a sealed container that stores battery electrolyte inside. The structural dimensions of the electrolyte storage tank 2 are adapted to the internal structural dimensions of the box 1. By precisely adapting to the internal space of the box 1, the internal volume of the box 1 is maximized, thereby achieving a reasonable plan for the storage amount of electrolyte. Furthermore, by placing the electrolyte storage tank 2 inside the box 1, the overall structural strength is further improved.

[0029] In some of these embodiments, such as Figure 2 As shown, the heat tracing module 3 is laid below the electrolyte storage tank 2 to provide a suitable and stable operating temperature for the electrolyte storage tank 2. The heat tracing module 3 includes multiple mounting templates 31, mounting grooves 32 formed on the mounting templates 31, heat tracing tape 33 disposed in the mounting grooves 32, and a sealing layer 34. Figure 3 As shown, the mounting template 31 is roughly a rectangular thin plate. When multiple mounting templates 31 are folded, they are roughly wavy. The multiple mounting templates 31 are folded and unfolded quickly through an alternating folding structure. When multiple mounting templates 31 are folded, their volume can be greatly compressed, which is convenient for transportation and storage, thereby reducing transportation and storage costs. After unfolding, the multiple mounting templates 31 are laid under the electrolyte storage tank 2. They can be flexibly laid under the electrolyte storage tank 2 according to the shape of the electrolyte storage tank 2, and can be adapted to electrolyte storage tanks 2 of different sizes according to the number of mounting templates 31.

[0030] In some embodiments, the mounting template 31 is made of thermally insulated extruded polystyrene board, and the thermal conductivity of the mounting template 31 is ≤0.03W / (m²). K), compressive strength ≥250kPa, width of installation template 31 ≤2.2m, length can be customized, thickness is 30-50mm, and the size of installation template 31 is adapted to the internal dimensions of standard container body 1.

[0031] In some embodiments, mounting grooves 32 are formed on the mounting template 31. The mounting grooves 32 are generally arranged in a U-shaped, serpentine pattern. The groove depth of the mounting grooves 32 is 10-15mm, and the width of the mounting grooves 32 matches the outer diameter of the heating cable 33. The spacing between adjacent mounting grooves 32 is set according to requirements. By providing mounting space for the heating cable 33 through the mounting grooves 32, and by matching the size of the mounting grooves 32 with the size of the heating cable 32, the heating cable 33 can be securely embedded in the mounting grooves 32, preventing displacement or detachment of the heating cable 33 during transportation, installation, and use, thereby ensuring stable heat tracing function. The serpentine layout of the mounting grooves 32 maximizes the extension path of the heating cable 33 within the limited area of ​​the mounting template 31. Furthermore, by providing an installation slot 32 that is compatible with the heat tracing cable 33, the heat tracing cable 33 can be directly embedded during installation, which reduces the difficulty of operation and improves the assembly efficiency of the heat tracing module 3. At the same time, by providing an installation slot 32, the heat tracing cable 33 can be protected from direct external pressure, reducing the probability of damage to the heat tracing cable 33 and extending the service life of the heat tracing template 3.

[0032] In some of these embodiments, such as Figure 4 As shown, the heat tracing cable 33 is laid in the mounting groove 32. The heat tracing cable 33 is used to provide heat to the electrolyte storage tank 2, thereby ensuring that the electrolyte storage tank 2 is at a suitable operating temperature. The heat tracing cable 33 is made of tin-plated braided explosion-proof and flame-retardant single-fluorine wire. The conductor resistance of the heat tracing cable 33 is ≤0.05Ω / m, and the power density is 15-30W / m. The spacing between adjacent heat tracing cables 33 is set according to the heat load requirements of the electrolyte storage tank 2. The two ends of the heat tracing cable 33 extend from the two ends of the mounting groove 32 for connecting to the power supply.

[0033] As an example, the spacing between adjacent tracing cables 33 is 50-200mm.

[0034] In some other embodiments, the heat tracing cable 33 is made of nickel-plated copper wire braided explosion-proof and flame-retardant single-fluorine wire.

[0035] In some embodiments, a sealing layer 34 is applied over the mounting template 31 to seal the heating cable 33 within the mounting groove 32 and reflect heat. The sealing layer 34 is made of adhesive-backed aluminum foil, which not only seals the heating cable 33 within the mounting groove 32 of the mounting template 31 but also forms a heat-reflective layer, providing uniform heat to the external electrolyte storage tank 2 and preventing excessively high local temperatures in the electrolyte storage tank 2.

[0036] As an example, the sealing layer 34 is an embossed aluminum foil layer with adhesive backing, with a thickness of 0.3-0.5 mm, used to improve heat reflection efficiency.

[0037] In some of these embodiments, such as Figure 5 , Figure 6As shown, the shape and dimensions of the waterproof module 4 are adapted to the shape and dimensions of the electrolyte storage tank 2. The waterproof module 4 covers the outside of the electrolyte storage tank 2 to prevent external moisture from entering the electrolyte storage tank 2 area, preventing moisture from mixing into the electrolyte through valves on the electrolyte storage tank 2, avoiding changes in the electrolyte composition, and thus ensuring the stability of the flow battery. The waterproof module 4 includes a waterproof layer 41, fixing holes 42 formed in the waterproof layer 41, and fixing components 43. The waterproof layer 41 has a multi-layer composite structure. The outer layer of the waterproof layer 41 is a waterproof sealing membrane with good resistance to electrolyte corrosion. The inner layer of the waterproof layer 41 is a flexible covering layer used to cover the electrolyte storage tank 2.

[0038] As an example, the outer layer of the waterproof layer 41 is made of PVC waterproof membrane by hot-melt welding, and the inner layer of the waterproof layer 41 is made of silicone pad material.

[0039] In some embodiments, fixing holes 42 are formed at the edge of the waterproof layer 41. Multiple fixing holes 42 are formed and evenly arranged at the edge of the waterproof layer 41. They are used to fix the waterproof layer 41 to the inner wall of the housing 1 by passing the fixing member 43 through the fixing holes 42, thereby realizing the fixed installation of the waterproof module 4.

[0040] In some of these embodiments, such as Figure 7 As shown, the fastener 43 includes a bolt 431 and a washer 432. A threaded hole corresponding to the bolt 431 is provided on the inner wall of the housing 1. After the washer 432 is placed through the bolt 431, the bolt 421 is then passed through the fixing hole 42 on the waterproof layer 41. Finally, the bolt 431 is fixed to the inner wall of the housing 1, thereby achieving that the waterproof layer 41 covers the outside of the electrolyte storage tank 2, and the waterproof layer 41 is located on the inner wall of the housing 1. That is to say, the waterproof layer 41 is located between the housing 1 and the electrolyte storage tank 2. The waterproof layer 41 is used to prevent moisture, dust and debris from contacting the electrolyte storage tank 2, reducing the impact of external pollutants on the flow battery and reducing the failure risk of the flow battery.

[0041] The production process of the heat tracing module 3 of this utility model is as follows: First, the installation template 31 is processed, using materials with a thermal conductivity ≤0.03W / (m²). K), thermal insulation extruded polystyrene board with a compressive strength ≥250kPa is cut into rectangular thin plates. The width of the installation template 31 is ≤2.2m, and the thickness is 30-50mm, with the length customized according to customer requirements. Then, U-shaped, meandering serpentine installation grooves 32 are opened on the installation template 31. The depth of the installation grooves 32 is 10-15mm, and the width matches the outer diameter of the heating cable 33. For example, if the outer diameter of the heating cable is 8mm, the width of the installation grooves 32 is 8.5-9mm. The spacing between adjacent installation grooves 32 is set according to the heat load requirements. Next, the heating cable 33 is embedded into the installation grooves 32. The explosion-proof and flame-retardant single-fluorine wire heating cable 33, made of tin-plated or nickel-plated copper wire, is embedded in the mounting groove 32 along the serpentine mounting groove 32 path, ensuring that the heating cable 33 is tightly attached to the groove wall of the mounting groove 32 and that the heating cable 33 is not loose in the mounting groove 32; then, a sealing layer 34 is used for sealing, and an embossed aluminum foil layer with an adhesive backing with a thickness of 0.3-0.5mm is covered on the surface of the mounting template 31 as a sealing layer, which is fixed by adhesive backing, thereby sealing the heating cable 33 in the mounting groove 32 and improving heat reflection efficiency; finally, multiple heating modules 3 are folded into a wave shape for storage or transportation. During the installation and use phase of this utility model, before the electrolyte storage tank 2 is placed inside the box 1, multiple folded wave-shaped heat tracing modules 3 are unfolded and placed at the bottom of the box 1. Finally, the heat tracing cables 33 at both ends are thrown out from the side wall of the box 1 and connected to the power supply, thereby improving the uniformity and reliability of temperature control of the electrolyte storage tank 2, while reducing construction difficulty and production cost.

[0042] The installation process of the capacity module 100 of the flow battery of this utility model is as follows: Before installing the electrolyte storage tank 2, unfold the folded wave-shaped heat tracing module 3, lay it flat at the bottom of the box 1, align it according to the corresponding position, and swing the two ends of the heat tracing cable 33 out from the side wall of the box 1 and connect it to the power supply. When the electrolyte temperature is <0℃, the heat tracing cable 33 can be activated to provide heat to the electrolyte storage tank 2 through the heat tracing module 3. Unfold the waterproof layer 41 and cover the outside of the electrolyte storage tank 2. Then, hoist the sealed storage tank 2 into the box 1 and place it above the heat tracing module 3, so that the bottom of the storage tank is tightly attached to the sealing layer 34 of the heat tracing module 3 to improve the heat conduction efficiency. Fix the waterproof layer 41 to the threaded hole on the inner wall of the box 1 by passing the fixing hole 2 on the edge of the fixing piece 43 through the fixing hole 2, thereby achieving the isolation of external moisture and dust.

[0043] The capacity module 100 of this utility model of a flow battery includes a housing 1, an electrolyte storage tank 2 installed in the housing 1, a heat tracing module 3, and a waterproof module 4. The heat tracing module 3 includes multiple mounting templates 31, mounting grooves 32 formed on the mounting module 31, a heat tracing cable 33 disposed in the mounting grooves 32, and a sealing layer 34. The waterproof module 4 includes a waterproof layer 41, fixing holes 42 formed on the waterproof layer 41, and fixing parts 43. By setting up the heat tracing module 3 and embedding the heat tracing cable 33 into the mounting grooves 32 during production, and folding multiple heat tracing modules 3 into a wave shape for easy unfolding and use, on-site installation efficiency is improved and installation time is shortened. Moreover, the heat tracing module 3 adopts a modular design, which can adapt to different sizes and has strong adaptability. The heat tracing cable 33 is installed... Installed within the serpentine mounting groove 32, the path of the heat tracing cable 33 is extended, and a sealing layer 34 is provided to improve heat utilization and ensure temperature uniformity. A waterproof module 4 is provided, with a waterproof layer 41 placed between the housing 1 and the electrolyte storage tank 2. The waterproof layer 41 has a multi-layer composite structure, with an outer waterproof sealing membrane and an inner flexible covering layer, providing excellent resistance to electrolyte corrosion. It can prevent external moisture from entering the electrolyte storage tank 2 area and prevent moisture from mixing into the electrolyte through valves on the electrolyte storage tank 2. Furthermore, by providing fixing holes 42 on the waterproof layer 41, a fixing member 43 passes through the fixing holes 42 to fix the waterproof layer 41 to the inner wall of the housing 1, thereby achieving rapid installation and fixing of the waterproof module.

[0044] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A capacity module for a flow battery, characterized in that, include: The enclosure includes an electrolyte storage tank and a heat tracing module installed inside the enclosure. The heat tracing module includes multiple mounting templates, mounting grooves formed on the mounting templates, a heat tracing cable disposed in the mounting grooves, and a sealing layer. The mounting grooves are arranged in a U-shaped, meandering serpentine pattern. The heat tracing cable is laid in the mounting grooves, and the sealing layer is placed on the mounting templates to seal the heat tracing cable in the mounting grooves and reflect heat.

2. The capacity module of the flow battery according to claim 1, characterized in that, The installation template is made of thermally insulated extruded polystyrene board, and its thermal conductivity is ≤0.03W / (m²). K), compressive strength ≥250kPa, thickness 30-50mm.

3. The capacity module of the flow battery according to claim 2, characterized in that, The groove depth of the mounting groove is 10-15mm, and the width of the mounting groove matches the outer diameter of the heat tracing cable.

4. The capacity module of the flow battery according to claim 1, characterized in that, The heat tracing cable is made of tin-plated braided explosion-proof and flame-retardant single-fluorine wire. The conductor resistance of the heat tracing cable is ≤0.05Ω / m, and the power density is 15-30W / m.

5. The capacity module of the flow battery according to claim 1, characterized in that, The heat tracing cable is made of nickel-plated copper wire braided into an explosion-proof and flame-retardant single-fluorine wire.

6. The capacity module of the flow battery according to claim 1, characterized in that, The sealing layer is an embossed aluminum foil layer with adhesive backing, and its thickness is 0.3-0.5mm.

7. The capacity module of the flow battery according to claim 1, characterized in that, The two ends of the heat tracing cable extend from the two ends of the mounting groove and are used to connect to a power source for power supply.

8. The capacity module of the flow battery according to claim 1, characterized in that, The spacing between adjacent tracing heat packs is 50-200mm.

9. The capacity module of the flow battery according to claim 1, characterized in that, The container body is made of a container that is easy to transport, and the outside of the container body is equipped with a hoisting interface.

10. The capacity module of the flow battery according to claim 1, characterized in that, The electrolyte storage tank is a sealed container that stores battery electrolyte inside. The structural dimensions of the electrolyte storage tank are adapted to the internal structural dimensions of the enclosure.

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