A modular energy storage unit

Abstract

This invention provides a modular energy storage unit, belonging to the field of energy storage battery technology. Its structure includes: a battery encased between a casing and a substrate; an outer flange at the lower end of the casing; several grooves on the outer flange; several mounting holes on the substrate, the positions of which align with the positions of the grooves; a plastic support plate including a horizontal plate; a lower extension tube at the bottom end of the horizontal plate; the horizontal plate overlapping the outer flange; the lower extension tube being inserted downwards into the grooves and mounting holes; plastic bolts passing through the lower extension tube and the substrate and being fastened with plastic nuts; a notch on the casing through which the battery's input and output terminals are exposed; and a perforated plate fixedly connected at the notch. This invention designs a protective casing for the battery cells of the energy storage battery, and on this basis, constructs a heat insulation structure, which can alleviate heat loss to a certain extent. The battery's self-generated heat during discharge can maintain a certain temperature condition.

Description

Technical Field

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

[0002] Energy storage batteries are batteries that convert chemical energy into electrical energy, possessing energy storage capabilities. They store electrical energy during charging and release it when needed to meet electricity demands, playing a crucial role in areas such as grid dispatching, peak load reduction, and power management. Key characteristics of energy storage batteries include high capacity, long cycle life, and stable performance, which can improve energy efficiency, promote the application of clean energy, and reduce carbon emissions, thus holding significant importance for future energy transition and sustainable development.

[0003] In existing technologies, energy storage batteries generally operate in the form of battery packs, consisting of several individual battery cells arranged in a modular structure, which can be called modular energy storage units. The structure of the modular energy storage unit itself has a direct impact on the overall performance of the energy storage battery. Since modular energy storage units are mostly deployed in power grid systems, photovoltaic power generation systems, and other operational sites, in addition to electrical performance, their installation and protection structures are also crucial for stable battery operation. The essence of battery charging and discharging is the migration of lithium ions between the positive and negative electrodes. At low temperatures, the viscosity of the electrolyte increases, the movement speed of lithium ions slows down, and the activity of electrode materials decreases due to low temperatures, increasing electron transfer resistance. Therefore, low-temperature environments have a significant impact on the charging and discharging performance and battery life of the battery. To alleviate this problem, modular energy storage units installed in the field are generally equipped with insulation facilities to maintain the local ambient temperature of the battery through active heating or waste heat utilization. However, the conventional structure of current modular energy storage units has a relatively fast heat dissipation rate, making it difficult to achieve good insulation effects. Summary of the Invention

[0004] This utility model aims to address the technical deficiencies of existing technologies by providing a modular energy storage unit to solve the technical problem of rapid heat loss in conventional modular energy storage units.

[0005] To achieve the above technical objectives, the present invention adopts the following technical solution:

[0006] A modular energy storage unit includes a battery, a casing, an inner insulating material liner, a substrate, a outer insulating material surface layer, an outer flange, grooves, mounting holes, a plastic support plate, inlet and outlet terminals, a perforated plate, an insulating material facing, a horizontal plate, and a lower extension tube. The inner insulating material liner is attached to the inner wall of the casing, and the outer insulating material surface layer is attached to the top surface of the substrate. The battery is enclosed between the casing and the substrate. An outer flange is provided at the lower end of the casing, and several grooves are provided on the outer flange. Several mounting holes are provided on the substrate. The position of the plastic support plate is aligned with the position of several slots. The plastic support plate includes a horizontal plate with a lower extension tube at the bottom end of the horizontal plate. The horizontal plate overlaps the outer flange. The lower extension tube is inserted downward into the slot and the mounting hole. Plastic bolts pass through the lower extension tube and the base plate and are fastened to the plastic nut. A notch is provided on the housing, through which the battery's input and output terminals are exposed. A perforated plate is fixedly connected at the notch. The perforation position of the perforated plate corresponds to the position of each input and output terminal. A heat insulation material is attached to the inner wall of the perforated plate.

[0007] Preferably, the materials of the inner lining layer, the outer layer, and the outer mat are selected from rigid polyurethane foam board or aerogel felt.

[0008] Preferably, the adhesion between the inner lining of the thermal insulation material and the shell, the adhesion between the outer layer of the thermal insulation material and the substrate, and the adhesion between the outer surface of the thermal insulation material and the perforated plate are all fixed by adhesive bonding.

[0009] Preferably, an outer flange is also provided at the lower end of the perforated plate, and the outer flange is attached to the surface layer of the heat insulation material. The perforated plate is fixed to the shell by plastic bolts and plastic nuts.

[0010] Preferably, the battery is fixedly connected to the substrate, and a heat-insulating material layer is placed between the battery and the substrate.

[0011] Preferably, a cavity is provided inside the substrate.

[0012] In the above technical solution, the battery is a modular battery cell, also known as a modular energy storage unit, and its structure adopts the conventional structure in this field; the shell and the substrate play a role in covering and protecting the battery, and the covering structure is used to create a heat-insulating environment; the heat-insulating material inner lining layer is attached to the inner wall of the shell, and the heat-insulating material surface layer is attached to the substrate, which plays a certain role in heat insulation; the lower end of the shell is provided with an outer flange as the bolt force point, the groove on the outer flange matches the mounting hole on the substrate, and is then fastened by plastic bolts and plastic nuts to fix the shell and the substrate. Because the head diameter of plastic bolts is generally small, and the machining of small-sized grooves is relatively difficult, a plastic support plate is added between the plastic bolt and the outer flanges to ensure that the bolt can penetrate the groove while the bolt head can press against the outer flanges on both sides of the groove. The horizontal plate of this plastic support plate spans the groove and overlaps the outer flange, and the lower extension tube is inserted into the groove and the mounting hole. Therefore, the horizontal plate can serve as the force point for the head of the plastic bolt. The plastic support plate also plays a certain role in sealing the annular gap between the groove and the bolt, which helps to improve the heat insulation effect. The shell has a notch for exposing the incoming and outgoing terminals. A perforated plate is installed at the notch to close most of the notch, leaving only holes to accommodate the terminals, thereby reducing the heat dissipation area. The heat insulation material on the inner side of the perforated plate provides a certain degree of heat insulation.

[0013] This invention provides a modular energy storage unit. The technical solution involves designing a protective casing for the individual battery cells of the energy storage battery, upon which a heat insulation structure is constructed. This structure can mitigate heat loss to a certain extent. The heat generated during battery discharge is sufficient to maintain a certain temperature. The heat insulation structure of this invention is simple, efficient, easy to assemble, and exhibits good operational performance. Attached Figure Description

[0014] Figure 1 This is an assembly drawing of this utility model;

[0015] Figure 2 This is a breakdown diagram of the present invention;

[0016] Figure 3 This is a partial cross-sectional view of the location of the tank in this utility model;

[0017] Figure 4 This is a structural diagram of the plastic support plate in this utility model;

[0018] In the picture:

[0019] Detailed Implementation

[0020] The specific embodiments of this utility model will be described in detail below. To avoid excessive and unnecessary details, well-known structures or functions will not be described in detail in the following embodiments. The approximate language used in the following embodiments can be used for quantitative descriptions, indicating that a certain degree of variation in quantity is permissible without changing the basic function. Unless otherwise defined, the technical and scientific terms used in the following embodiments have the same meaning as commonly understood by those skilled in the art to which this utility model pertains.

[0021] Example 1

[0022] A modular energy storage unit, such as Figures 1-4 As shown, the device includes a battery 1, a housing 2, a heat-insulating material inner liner 3, a substrate 4, a heat-insulating material outer layer 5, an outer flange 6, grooves 7, mounting holes 8, a plastic support plate 9, inlet / outlet terminals 10, a perforated plate 11, a heat-insulating material facing 12, a horizontal plate 13, and a lower extension tube 14. The heat-insulating material inner liner 3 is attached to the inner wall of the housing 2, and the heat-insulating material outer layer 5 is attached to the top surface of the substrate 4. The battery 1 is enclosed between the housing 2 and the substrate 4. An outer flange 6 is provided at the lower end of the housing 2, and several grooves 7 are provided on the outer flange 6. Several mounting holes 8 are provided on the substrate 4. The positions of the mounting holes 8 are specified. The plastic support plate 9 is aligned with the positions of several grooves 7. It includes a horizontal plate 13 with a lower extension tube 14 at the bottom of the horizontal plate 13. The horizontal plate 13 overlaps the outer flange 6. The lower extension tube 14 is inserted downward into the groove 7 and the mounting hole 8. Plastic bolts pass through the lower extension tube 14 and the base plate 4 and are fastened to the plastic nut. A notch is provided on the housing 2. The inlet and outlet terminals 10 of the battery 1 are exposed through the notch. A perforated plate 11 is fixedly connected at the notch. The perforation position of the perforated plate 11 corresponds to the position of each inlet and outlet terminal 10. A heat insulation material lining 12 is attached to the inner wall of the perforated plate 11.

[0023] In the above technical solution, the battery 1 is a modular battery cell, also known as a modular energy storage unit, and its structure adopts the conventional structure in this field; the shell 2 and the substrate 4 cover and protect the battery 1, and use the covering structure to create a heat-insulating environment; the heat-insulating material inner lining layer 3 is attached to the inner wall of the shell 2, and the heat-insulating material surface layer 5 is attached to the substrate 4, which plays a certain heat-insulating role; the lower end of the shell 2 is provided with an outer flange 6 as the bolt force point, the groove 7 on the outer flange 6 matches the mounting hole 8 on the substrate 4, and is then fastened by plastic bolts and plastic nuts to realize the fixation of the shell 2 and the substrate 4. Since the head diameter of plastic bolts is generally small, and the processing of small-sized grooves 7 is relatively difficult, a plastic support plate 9 is added between the plastic bolt and the outer flanges 6 to ensure that the bolt can penetrate the groove 7 while the bolt head can be pressed against the outer flanges 6 on both sides of the groove 7. The horizontal plate 13 of the plastic support plate 9 spans the groove 7 and overlaps the outer flange 6, and the lower extension tube 14 is inserted into the groove 7 and the mounting hole 8. Therefore, the horizontal plate 13 can serve as the force point for the head of the plastic bolt. The plastic support plate can also play a certain role in sealing the annular gap between the groove 7 and the bolt, which is beneficial to improving the heat insulation effect. The housing 2 has a notch for the exposed terminal 10. The perforated plate 11 is installed at the notch to close most of the notch, leaving only holes to accommodate the terminals, thereby reducing the heat dissipation area. The heat insulation material lining 12 located inside the perforated plate 11 plays a certain role in heat insulation.

[0024] Example 2

[0025] A modular energy storage unit, such as Figures 1-4As shown, the device includes a battery 1, a housing 2, a heat-insulating material inner liner 3, a substrate 4, a heat-insulating material outer layer 5, an outer flange 6, grooves 7, mounting holes 8, a plastic support plate 9, inlet / outlet terminals 10, a perforated plate 11, a heat-insulating material facing 12, a horizontal plate 13, and a lower extension tube 14. The heat-insulating material inner liner 3 is attached to the inner wall of the housing 2, and the heat-insulating material outer layer 5 is attached to the top surface of the substrate 4. The battery 1 is enclosed between the housing 2 and the substrate 4. An outer flange 6 is provided at the lower end of the housing 2, and several grooves 7 are provided on the outer flange 6. Several mounting holes 8 are provided on the substrate 4. The positions of the mounting holes 8 are specified. The plastic support plate 9, which is aligned with several grooves 7, includes a horizontal plate 13. A lower extension tube 14 is provided at the bottom of the horizontal plate 13. The horizontal plate 13 overlaps the outer flange 6. The lower extension tube 14 is inserted downwards into the groove 7 and the mounting hole 8. Plastic bolts pass through the lower extension tube 14 and the base plate 4 and are fastened with plastic nuts. A notch is provided on the housing 2, through which the inlet and outlet terminals 10 of the battery 1 are exposed. A perforated plate 11 is fixedly connected at the notch, with the perforation positions of the perforated plate 11 corresponding to the positions of each inlet and outlet terminal 10. A heat-insulating material surface 12 is attached to the inner wall of the perforated plate 11. The heat-insulating material inner lining layer 3, the heat-insulating material surface layer 5, and the heat-insulating material surface 12 are each made of rigid polyurethane foam board or aerogel felt. The adhesion between the inner lining layer 3 and the shell 2, the adhesion between the outer layer 5 and the substrate 4, and the adhesion between the outer surface 12 and the perforated plate 11 are all fixed by adhesive bonding. An outer flange 6 is also provided at the lower end of the perforated plate 11, which is attached to the outer surface layer 5. The perforated plate 11 and the shell 2 are fixed by plastic bolts and plastic nuts. The battery 1 is fixedly connected to the substrate 4, and the outer surface layer 5 is placed between the battery 1 and the substrate 4. A cavity is provided inside the substrate 4.

[0026] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and is not intended to limit this utility model. Any modifications, equivalent substitutions, and improvements made within the scope of this utility model application should be included within the protection scope of this utility model.

Claims

1. A modular energy storage unit, characterized in that... The system includes a battery (1), a housing (2), a heat-insulating material liner (3), a substrate (4), a heat-insulating material surface layer (5), an outer flange (6), a groove (7), mounting holes (8), a plastic support plate (9), inlet and outlet terminals (10), a perforated plate (11), a heat-insulating material veneer (12), a horizontal plate (13), and a lower extension tube (14). The heat-insulating material liner (3) is attached to the inner wall of the housing (2), and the heat-insulating material surface layer (5) is attached to the top surface of the substrate (4). The battery (1) is enclosed between the housing (2) and the substrate (4). An outer flange (6) is provided at the lower end of the housing (2), and several grooves (7) are provided on the outer flange (6). Several mounting holes (8) are provided on the substrate (4). The position of (8) corresponds to the position of several grooves (7). The plastic support plate (9) includes a horizontal plate (13). A lower extension tube (14) is provided at the bottom of the horizontal plate (13). The horizontal plate (13) overlaps on the outer flange (6). The lower extension tube (14) is inserted downward into the groove (7) and the mounting hole (8). Plastic bolts pass through the lower extension tube (14) and the base plate (4) and are fastened to the plastic nut. A notch is provided on the housing (2). The inlet and outlet terminals (10) of the battery (1) are exposed through the notch. A hollow plate (11) is fixedly connected at the notch. The hollow position of the hollow plate (11) corresponds to the position of each inlet and outlet terminal (10). A heat insulation material surface (12) is attached to the inner wall of the hollow plate (11).

2. The modular energy storage unit according to claim 1, characterized in that, The materials of the inner lining layer (3), the outer layer (5), and the outer surface layer (12) of the thermal insulation material are selected from rigid polyurethane foam board or aerogel felt.

3. A modular energy storage unit according to claim 2, characterized in that, The adhesion between the inner lining layer (3) of the heat insulation material and the shell (2), the adhesion between the outer layer (5) of the heat insulation material and the substrate (4), and the adhesion between the outer surface layer (12) of the heat insulation material and the perforated plate (11) are all fixed by adhesive bonding.

4. A modular energy storage unit according to claim 1, characterized in that, An outer flange (6) is also provided at the lower end of the perforated plate (11). The outer flange (6) is attached to the heat insulation material surface layer (5). The perforated plate (11) and the shell (2) are fixed by plastic bolts and plastic nuts.

5. A modular energy storage unit according to claim 1, characterized in that, The battery (1) is fixedly connected to the substrate (4), and the heat insulation material layer (5) is placed between the battery (1) and the substrate (4).

6. A modular energy storage unit according to claim 1, characterized in that, A cavity is provided inside the substrate (4).

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