energy storage module

Abstract

The utility model discloses a kind of energy storage modules, including box and the box cover of the upper frame sealing connection of the box, the height of the box cover is greater than the height of the box, the space is formed inside after the sealing connection of the box cover with the box, battery module is provided in the space;The bottom of the box is integrated with liquid cooling plate, the bottom surface of the liquid cooling plate is arranged with protection plate.The energy storage module of the utility model adopts integrated idea, integrates liquid cooling plate and bottom protection plate to box design, overall adopts the integrated and increases bottom protection plate and carries out the high protection design thought of liquid cooling plate protection and heat preservation of "low box, high box cover", guarantee the performance of high protection and heat preservation of product.

Description

Technical Field

[0001] This utility model relates to the field of energy storage module technology, and in particular to an energy storage module. Background Technology

[0002] Energy storage technology plays a crucial role in modern energy systems. With the rapid development of renewable energy, the demand for energy storage technology is increasing daily. However, existing air cooling and natural cooling methods have limitations in terms of efficiency and reliability. Liquid cooling, as an emerging cooling technology, can effectively address the limitations of air cooling and natural cooling methods, improving the overall performance of energy storage modules.

[0003] Therefore, researching integrated liquid cooling technology for energy storage modules has significant practical implications and broad application prospects. Integrated liquid cooling arrangement of energy storage modules can further improve their efficiency and safety. However, improving the protection level and mechanical performance of energy storage modules using integrated liquid cooling technology is a crucial consideration.

[0004] Liquid-cooled integrated energy storage modules require, on the one hand, an integrated liquid-cooled plate design for the energy storage module enclosure, while the enclosure itself must meet the IP67 protection level. On the other hand, the energy storage module must meet the national standards for mechanical stability and strength, and have high protection characteristics. At the same time, the ease of fixing and assembling different components and the convenience of later maintenance must be considered. However, existing liquid-cooled integrated energy storage modules cannot meet the usage requirements.

[0005] Currently, most energy storage module designs are modular, with the module housing serving as the primary load-bearing structure. The cooling system and housing are not integrated, resulting in significant space consumption. Furthermore, the module systems have low protection ratings; air-cooled modules typically have an IP20 rating, and liquid-cooled modules are mostly IP65, failing to meet the design requirements of IP67 and bottom protection in harsh environments. This limits the overall system's cooling performance, mechanical stability, and internal space, hindering structural stability, platformization, and the development and application of module temperature uniformity. At the system level, both functional requirements and ease of maintenance must be comprehensively considered. Existing designs do not achieve a good balance between functionality and maintenance convenience, necessitating optimization that integrates functionality and structure.

[0006] Therefore, it is necessary to design an energy storage module that is highly protected and easy to assemble. Utility Model Content

[0007] The purpose of this invention is to overcome the shortcomings and defects of the existing technology and provide a liquid-cooled integrated energy storage module with high protection function.

[0008] This utility model is implemented as follows:

[0009] An energy storage module includes a housing and a cover that is sealed to the upper frame of the housing. The height of the cover is greater than the height of the housing. After the cover is sealed to the housing, a space is formed inside the space, and a battery module is disposed in the space. A liquid cooling plate is integrated at the bottom of the housing, which serves as the bottom bearing surface of the housing. A protective plate is arranged on the bottom surface of the liquid cooling plate.

[0010] Preferably, the housing includes a left beam, a right beam, a front frame, and a rear frame, and the four sides of the liquid cooling plate and the protective plate are connected and fixed to the left beam, the right beam, the front frame, and the rear frame.

[0011] Preferably, a sealing strip is arranged between the sealing surfaces of the lid and the upper frame of the box body. The sealing strip adopts a segmented symmetrical design, which segments the overall sealing surface.

[0012] Preferably, the sealing strip includes four first sealing strips arranged on both sides of the upper frame along its length and two second sealing strips arranged on both ends of the upper frame along its width.

[0013] Preferably, an insulating foam layer is arranged between the liquid cooling plate and the protective plate, and the insulating foam layer is arranged in the limiting space on the upper surface of the protective plate.

[0014] Preferably, the upper surface of the liquid cooling plate is provided with a plurality of module crossbeams, the module crossbeams are arranged at intervals and perpendicular to the length direction of the liquid cooling plate, and the liquid cooling plate is connected to the battery module through a thermally conductive adhesive layer.

[0015] Preferably, the cover has two openings on one side in the width direction, which are respectively installed with a high-voltage plug fixing plate for installing high-voltage plugs and a BMU maintenance cover for easy opening and disassembly; the BMU maintenance cover corresponds to the BMU unit of the energy storage module.

[0016] Preferably, the outer surface of the front frame of the enclosure is provided with a module mounting push-pull fixing structure, and the front ends of the two side beams of the enclosure are provided with module fixing mounting structures.

[0017] Preferably, the outer surface of the front frame of the enclosure is provided with a module equipotential bonding structure, and a module fixed mounting structure is arranged for one of the modules.

[0018] Preferably, the rear ends of the two side beams of the box body are provided with module installation and positioning structures, and the sides of the two side beams of the box body are provided with module hoisting and fixing structures.

[0019] The energy storage module of this utility model adopts an integrated approach, integrating the liquid cooling plate and the bottom protective plate into the cabinet design. The overall design features a "low cabinet and high cover" and adds a bottom protective plate for the liquid cooling plate to protect and insulate the liquid cooling plate, ensuring the product's high protection and insulation performance. Attached Figure Description

[0020] Figure 1 This is an exploded view of the energy storage module of this utility model.

[0021] Figure 2 This is an exploded view of the sealing strip of the energy storage module of this utility model.

[0022] Figure 3 This is an exploded view of the housing of the energy storage module of this utility model.

[0023] Figure 4 This is a front view schematic diagram of the energy storage module of this utility model.

[0024] Figure 5 This is a rear view schematic diagram of the energy storage module of this utility model.

[0025] Figure 6 A side view of the energy storage module of this utility model. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0027] See Figures 1 to 6As shown in the exemplary embodiment of this application, an energy storage module includes a housing 1 and a cover 7 sealed to the upper frame of the housing. The height of the cover is greater than the height of the housing. The cover has a side panel and a top panel connected to the side panel. After the cover is sealed to the housing, a space is formed inside, in which a battery module 4 is disposed. A liquid cooling plate 20, preferably an integrated liquid cooling plate, is integrated at the bottom of the housing. The liquid cooling plate serves as the bottom bearing surface of the housing to support the battery module and its accessories. A protective plate 22 is arranged on the bottom surface of the liquid cooling plate. In the exemplary embodiment of this invention, an integrated approach is adopted, integrating the liquid cooling plate and the bottom protective plate into the housing design. The overall design adopts an integrated approach of "low housing, high cover" and a high protection design approach of adding a bottom protective plate for liquid cooling plate protection and insulation. The addition of a bottom protective plate structure at the bottom of the housing increases the performance level of liquid cooling plate insulation and mechanical protection at the bottom of the housing, ensuring the high protection and insulation performance as well as the performance level of bottom mechanical protection of the product. The exemplary embodiment of this application provides a highly protected energy storage module that integrates a liquid-cooled plate structure. The liquid-cooled plate is integrated into the bottom of the housing, and the housing structure integrates high sealing, high protection, and high heat insulation features, while also possessing high mechanical strength performance.

[0028] In an exemplary embodiment of this application, the housing includes a left beam 16, a right beam 15, a front frame 17, and a rear frame 18. The four sides of the liquid cooling plate and the protective plate are connected and fixed to the left beam 16, the right beam 15, the front frame 17, and the rear frame 18 to form the housing.

[0029] For example, in this application, the connection between the liquid cooling plate and the various components of the left beam, right beam, front frame and rear frame can be achieved by riveting and gluing, or by a combination of reinforcing support blocks, bolting and gluing.

[0030] In an exemplary embodiment of this application, a high-sealing protection scheme is adopted, using the box frame as the sealing surface and adding an external sealing strip. In some embodiments, a sealing strip 3 may be arranged between the sealing surfaces of the box cover and the upper frame of the box body. The sealing strip adopts a segmented symmetrical design, which segments the overall sealing surface to meet the high sealing performance index of the product.

[0031] In specific implementation, the entire casing cover is pressed together in sections using mounting bolts. Compared to the structural design of traditional energy storage modules, the exemplary embodiment of this application uses the casing frame as the sealing surface, and adds a segmented symmetrical sealing strip design to press together the entire sealing surface in sections, thus ensuring the high protective sealing performance of the energy storage module as a whole.

[0032] In an exemplary embodiment of this application, the sealing strip 3 includes four first sealing strips 31 arranged on both sides of the upper frame along its length and two second sealing strips 32 arranged on both ends of the upper frame along its width. Figure 2 As shown.

[0033] In an exemplary embodiment of this application, a supporting insulation foam layer 21 is arranged between the liquid cooling plate and the protective plate. The supporting insulation foam layer is arranged in a limiting space formed by the intersecting arrangement of transverse and longitudinal ribs on the upper surface of the protective plate. In this application, by configuring a supporting insulation foam layer on the bottom protective plate 22 at the bottom of the enclosure, it has the technical characteristics of iteratively updateable liquid cooling channels, good liquid cooling insulation performance, module protection level meeting IP67 requirements, and high overall strength of the enclosure.

[0034] In an exemplary embodiment of this application, a plurality of module crossbeams 19 are arranged on the upper surface of the liquid cooling plate 20, as shown in the figure, four in total: two in the middle and two near the ends. The module crossbeams near the ends and adjacent module crossbeams in the middle are used to place battery modules 4. The module crossbeams are spaced apart and perpendicular to the length direction of the liquid cooling plate. The liquid cooling plate and the battery modules are connected by a thermally conductive adhesive layer 2, achieving the functions of bonding and heat conduction for the battery modules. The module crossbeams are used to connect to the end plates of the battery modules. Long bolts extend downwards from the upper end of the end plates and connect to the module crossbeams, thereby fixing the battery modules to the liquid cooling plate. There are multiple battery modules.

[0035] The battery module 6 has an insulating structure arranged on its top and sides, including an inverted U-shaped mica plate 6 on the top and an insulating sheet 5 arranged on the end face of the battery module to separate the battery module from the inner wall of the box cover.

[0036] According to an exemplary embodiment of this application, the energy storage module adopts a modular design, dividing the module interior into a high-voltage electrical area and a module package area. The module packages can be connected using the existing standardized 13S1P small package structure design, integrated through external copper busbars and internal CCS solutions. The module packages are fixedly connected by pressure plates to ensure the overall height of the module interior and the reliability of electrical connections, ensuring that the module product has the technical characteristics of high protection, high sealing, high integration, and high reliability.

[0037] According to an exemplary embodiment of this application, the external part of the energy storage module adopts a partitioned design. The positive and negative connectors 9 and the maintenance switch 11, which have good stability and do not require maintenance or replacement, are designed to be located on the front left side of the enclosure and are internally sealed. For the locations where the fuse 12 and BMU may need to be replaced, an external sealing design is adopted. This allows the fuse 12 and BMU to be repaired and replaced without disassembling the enclosure cover. This ensures that the product performance requirements are met while also satisfying the requirements for product assembly and maintenance convenience.

[0038] In an exemplary embodiment of this application, corresponding to the modular design inside the module, two openings are arranged on one side of the box cover in the width direction, respectively installing a high-voltage plug fixing plate 8 (for installing high-voltage plugs, such as positive and negative connectors 9 and maintenance switches 11) and a BMU maintenance cover 9 that is easy to open and disassemble; the BMU maintenance cover corresponds to the BMU unit of the energy storage module and the fuse 12.

[0039] Specifically, the high-voltage plug-in fixing plate is pressed together with the high-voltage plug-in fixing plate pressure strip 13 and the high-voltage plug-in fixing plate mounting bolts. The BMU maintenance cover plate 9 is compressed and sealed with the BMU maintenance cover plate pressure strip 14. The pressure strip can be made of foam. While pressing the high-voltage plug-in fixing plate pressure strip 13 and the BMU maintenance cover plate pressure strip, the compression amount of the high-voltage plug-in fixing plate pressure strip and the BMU maintenance cover plate pressure strip is ensured to meet the high sealing performance index of the product.

[0040] Compared to the structural design of traditional energy storage modules, the exemplary embodiment of this application adopts a partitioned design for the external part of the module. For the positive and negative connectors and maintenance switches, which have good stability and require little maintenance or replacement, the design is placed on the front left side of the enclosure and an internal sealing design is adopted. For the structure that may require replacement of fuses and BMUs, an external sealing design is adopted. This allows for the maintenance and replacement of fuses and BMUs without disassembling the enclosure cover, thus ensuring product performance requirements while meeting the requirements for convenient product assembly and maintenance.

[0041] like Figure 4 , Figure 5 as well as Figure 6As shown in the exemplary embodiment of this application, a module mounting push-pull fixing structure 24, such as a cylindrical groove, is arranged on the outer surface of the front frame of the box. A module fixing mounting structure 25, such as a cylindrical groove, is arranged at the front end of the two side beams of the box. This includes four module fixing mounting structures, forming two groups of two, spaced vertically apart. In the exemplary embodiment of this application, a module equipotential bonding structure 23, such as a cylindrical groove structure, is arranged on the outer surface of the front frame of the box, adjacent to one of the module fixing mounting structures. In the exemplary embodiment of this application, a module mounting positioning structure 27, such as a cylinder, is arranged at the rear end of the two side beams of the box. A module hoisting fixing structure 28, such as a hoisting hole, is arranged on the sides of the two side beams of the box.

[0042] Compared to the structural design of traditional energy storage modules, the exemplary embodiment of this application adopts an integrated design. Four M8 module fixing and installation structures are designed at the front end of the two side beams of the module housing, forming two groups of two modules arranged vertically and alternately. Two module hoisting and pushing-pull fixing structures and one equipotential connection structure are designed on the front frame. Two module installation and positioning structures are designed on the rear frame of the housing. A total of eight module hoisting and fixing structures are designed on the sides of the two side beams outside the housing, with four evenly arranged on each side beam, to ensure the hoisting, installation, fixing and equipotential performance of the product.

[0043] In this embodiment, the BMU maintenance cover is also equipped with a module explosion-proof valve 26, a module control board, and other devices, which will not be described in detail here.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic features of this utility model.

[0045] Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of the present invention is defined by the appended claims rather than the foregoing description. Thus, it is intended to encompass all variations falling within the meaning and scope of the equivalents of the claims within the present invention.

[0046] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An energy storage module, characterized in that, The device includes a housing and a cover that is sealed to the upper frame of the housing. The height of the cover is greater than the height of the housing. After the cover is sealed to the housing, a space is formed inside the housing, and a battery module is installed in the space. A liquid cooling plate is integrated at the bottom of the housing, which serves as the bottom support surface of the housing. A protective plate is arranged on the bottom surface of the liquid cooling plate.

2. The energy storage module according to claim 1, characterized in that, The enclosure includes a left beam, a right beam, a front frame, and a rear frame. The four sides of the liquid cooling plate and the protective plate are connected and fixed to the left beam, the right beam, the front frame, and the rear frame.

3. The energy storage module according to claim 1, characterized in that, A sealing strip is arranged between the sealing surfaces of the lid and the upper frame of the box body. The sealing strip adopts a segmented symmetrical design, which segments the overall sealing surface.

4. The energy storage module according to claim 3, characterized in that, The sealing strip includes four first sealing strips arranged on both sides of the upper frame along its length and two second sealing strips arranged on both ends of the upper frame along its width.

5. The energy storage module according to claim 1, characterized in that, A thermal insulation foam layer is arranged between the liquid cooling plate and the protective plate, and the thermal insulation foam layer is arranged in the limiting space on the upper surface of the protective plate.

6. The energy storage module according to claim 1, characterized in that, The upper surface of the liquid cooling plate is provided with multiple module beams, which are spaced apart and perpendicular to the length direction of the liquid cooling plate. The liquid cooling plate is connected to the battery module through a thermally conductive adhesive layer.

7. The energy storage module according to claim 1, characterized in that, The cover has two openings on one side in the width direction, which are respectively installed with a high-voltage plug fixing plate for installing high-voltage plugs and a BMU maintenance cover for easy opening and disassembly; the BMU maintenance cover corresponds to the BMU unit of the energy storage module.

8. The energy storage module according to claim 1, characterized in that, The outer surface of the front frame of the enclosure is provided with a module installation push-pull fixing structure, and the front ends of the two side beams of the enclosure are provided with module fixing installation structures.

9. The energy storage module according to claim 8, characterized in that, The outer surface of the front frame of the enclosure is provided with a module equipotential connection structure, and a module is fixedly installed near one of the modules.

10. The energy storage module according to claim 1, characterized in that, The rear ends of the two side beams of the box are provided with module installation and positioning structures, and the sides of the two side beams of the box are provided with module hoisting and fixing structures.

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