Integrated liquid-cooled energy storage system

Abstract

This utility model discloses an integrated liquid-cooled energy storage system, including a housing with an integrated liquid-cooling plate and an energy storage battery module arranged above and supported by the liquid-cooling plate. The energy storage battery module includes multiple sub-modules, each fixed as a whole. These sub-modules are connected in the X-direction via a first fixing plate and in the Y-direction via a second fixing plate, ultimately forming an integrated structure. This utility model, by supporting the energy storage battery module above the liquid-cooling plate, and by connecting these sub-modules in the X-direction via the first fixing plate and in the Y-direction via the second fixing plate to form an integrated structure, makes the structure of the energy storage battery module more stable, forming a stable overall structure and improving the overall stability of the system.

Description

Technical Field

[0001] This utility model relates to the field of energy storage system technology, and in particular to an integrated liquid-cooled energy storage system. Background Technology

[0002] With the rapid development of renewable energy, the demand for energy storage technology is increasing, and energy storage technology plays a crucial role in modern energy systems. However, traditional air cooling and natural cooling methods have certain limitations in terms of efficiency and reliability. Liquid cooling, as an emerging cooling technology, can effectively solve these problems and improve the overall performance of energy storage modules. Therefore, researching the application of integrated liquid cooling in energy storage modules has significant practical implications and broad application prospects. The application of integrated liquid cooling module layout further enhances the efficiency and safety of energy storage modules.

[0003] With the increasing demands for integration and cost reduction in energy storage systems, energy storage module enclosures also require more integrated designs, placing higher demands on the overall layout design. On the one hand, the overall layout design of energy storage modules needs to have broad compatibility with the dimensions of the enclosure and module packages, and increasing the number of series and parallel connections for the packages provides better adaptability. On the other hand, energy storage modules need to meet national standards for mechanical stability and strength, while also considering the ease of fixing and assembling different components and the convenience of subsequent maintenance.

[0004] Currently, battery system module designs are primarily modular, with the module housing serving as the main load-bearing structure. Mechanically, the module end plates are bolted to the housing, while the front-end BMU mounting plate is separately connected. Cooling methods differ depending on whether air or liquid cooling is used, requiring additional air-cooling and liquid-cooling plates. Each component is relatively independent, lacking overall connectivity. This design presents limitations in overall system cooling performance, mechanical stability, and internal space, hindering structural stability, platformization, and the development and application of module temperature uniformity.

[0005] Therefore, it is very important to design an integrated energy storage module system that simultaneously meets the requirements of compatibility with different series and parallel module packages, structural stability, and reliability and convenience of disassembly and assembly. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings and defects of the existing technology and to provide an integrated liquid-cooled energy storage system.

[0007] This utility model is implemented as follows:

[0008] An integrated liquid-cooled energy storage system includes a housing with an integrated liquid cooling plate and an energy storage battery module arranged above and supported by the liquid cooling plate. The energy storage battery module includes multiple sub-modules, each fixed as a whole. The multiple sub-modules are connected in the X direction by a first fixing plate and in the Y direction by a second fixing plate, ultimately forming an integrated whole structure.

[0009] Preferably, the second fixing plate and the end plate of the submodule are detachably connected by fasteners, and the first fixing plate and the second fixing plate are detachably connected by fasteners.

[0010] Preferably, the second fixing plate and the first fixing plate are pre-drilled with mounting holes for fasteners, and the second fixing plate and the first fixing plate are fixed together by fasteners.

[0011] Preferably, the second fixing plate is an L-shaped plate, which includes an end plate connecting fixing plate for connecting with the end plates on the same side of multiple sub-modules stacked in the Y direction, and multiple spaced first fixing plate connecting plates connected by the end plate connecting fixing plate by vertical bending.

[0012] Preferably, the first fixing plate is an I-shaped plate, and there are multiple of them.

[0013] Preferably, the bottom of the end plate of the submodule is fixed to the module crossbeam, and the module crossbeam is connected and fixed to the upper surface of the liquid cooling plate.

[0014] Preferably, the submodule has end plates at both ends, and the end plates and the battery module formed by the stacked cells between the end plates are tied together with strapping to form an integral submodule.

[0015] Preferably, the first fixing plate has an elongated hole for installing a clip to secure the wire harness.

[0016] Preferably, the upper end of the enclosure is connected to a cover, which has a side panel and a top that surround and cover the energy storage battery module on all four sides and the top. The maintenance window on one end of the side panel is detachably equipped with a maintenance window cover with an external sealing design, which is convenient to open for maintenance of internal components including fuses and BMU.

[0017] Preferably, a high-pressure plug fixing plate with an internal sealing design is arranged on the end side, and a foam sealing strip is arranged around the opening of the high-pressure plug fixing plate and the end side.

[0018] This utility model integrates a liquid-cooled energy storage system, which supports an energy storage battery module above a liquid-cooled plate. The energy storage battery module includes multiple sub-modules, each fixed as a whole. The multiple sub-modules are connected in the X direction by a first fixing plate and in the Y direction by a second fixing plate, ultimately forming an integrated whole structure. This makes the structure of the energy storage battery module of the system more stable, forming an overall stable structure and improving the stability of the system. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the integrated liquid-cooled energy storage system of this utility model.

[0020] Figure 2 This is a schematic diagram of the front-end structure of the integrated liquid-cooled energy storage system of this utility model.

[0021] Figure 3 This is a front view schematic diagram of the integrated liquid-cooled energy storage system of this utility model.

[0022] Figure 4 This is a top view schematic diagram of the energy storage battery module arrangement of the integrated liquid-cooled energy storage system of this utility model.

[0023] Figure 5 This is a side view of the energy storage battery module arrangement of the integrated liquid-cooled energy storage system of this utility model.

[0024] Figure 6 This is a side view of the connection position of the sub-modules of the integrated liquid-cooled energy storage system of this utility model.

[0025] Figure 7 This is a schematic diagram of the second fixed plate of the integrated liquid-cooled energy storage system of this utility model.

[0026] Figure 8 This is a schematic diagram of the first fixed plate of the integrated liquid-cooled energy storage system of this utility model.

[0027] Figure 9 This is a schematic diagram of the liquid cooling component of the integrated liquid-cooled energy storage system of this utility model.

[0028] Figure 10 This is a schematic diagram of the cover of the integrated liquid-cooled energy storage system of this utility model. Detailed Implementation

[0029] 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.

[0030] See the instruction manual appendix Figures 1 to 10As shown in the exemplary embodiment of this application, the integrated liquid-cooled energy storage system includes a housing 1 with an integrated liquid-cooled plate and an energy storage battery module arranged above and supported by the liquid-cooled plate. The energy storage battery module includes multiple sub-modules 8, each fixed as a whole. The multiple sub-modules are connected in the X direction by a first fixing plate 10 and in the Y direction by a second fixing plate 11, ultimately forming an integrated whole structure. See [link to documentation]. Figure 6 As shown.

[0031] According to an exemplary embodiment of this application, the second fixing plate and the end plate 82 of the submodule 8 are detachably connected by a first fastener, and the first fixing plate and the second fixing plate are detachably connected by a second fastener. The first fastener enters from the side of the end plate of the submodule and connects the second fixing plate and the end plates of multiple submodules in series.

[0032] According to an exemplary embodiment of this application, the second fixing plate and the first fixing plate are pre-drilled with mounting holes for fasteners. The second fixing plate and the first fixing plate are fixed with a second fastener. The second fastener can be perpendicular to the end plate of the submodule and drilled vertically downward from the top of the end plate of the submodule to connect the first fixing plate, the second fixing plate, and the end plate of the submodule.

[0033] According to an exemplary embodiment of this application, the second fixing plate 11 is an L-shaped plate. The L-shaped plate includes an end plate connecting fixing plate 110 for connecting with the end plates on the same side of multiple sub-modules stacked in the Y direction, and multiple spaced-apart first fixing plate connecting plates 111 connected by vertical bending of the end plate connecting fixing plate. Figure 8 As shown.

[0034] According to an exemplary embodiment of this application, the first fixing plate 10 is an I-beam plate, and there are multiple of them. When located between two adjacent sub-modules separated along the X direction, two adjacent second fixing plates can be bridged, such as... Figure 7 As shown.

[0035] According to exemplary embodiments of this application, such as Figure 6 As shown, the bottom of the end plate 82 of the submodule is fixed to the module crossbeam 9. The module crossbeam is connected and fixed to the upper surface of the liquid cooling plate. The module crossbeam can be connected and fixed to the liquid cooling plate by screws or rivets and is arranged perpendicular to the length direction of the liquid cooling plate. There are multiple module crossbeams, such as four. Two are located in the middle of the liquid cooling plate, and one is arranged near each end. The module crossbeams near the ends and the adjacent module crossbeam in the middle are used to place the submodule. The end plate and the module crossbeam can be fixed by long bolts that pass vertically through the end plate.

[0036] According to an exemplary embodiment of this application, end plates 82 are arranged at both ends of the submodule 8, and the end plates and the battery module formed by the stacked cells between the end plates are tightly bound together with strapping straps 81 (steel straps) to form an integral submodule. In the embodiments of this application, each submodule is pre-fixed as a whole, and then connected to the module crossbeam through the end plates, and connected at the top by a first fixing plate and a second fixing plate, so that the connection between the energy storage battery module supported by the liquid cooling plate and the liquid cooling plate as the housing is more stable, improving the stability of the system and facilitating disassembly and maintenance.

[0037] According to an exemplary embodiment of this application, the first fixing plate has an elongated hole 101 in the middle portion for mounting a buckle to fix the wire harness.

[0038] According to an exemplary embodiment of this application, the upper end of the housing is connected to a cover 2. The cover 2 has a side panel 21 that surrounds and covers the energy storage battery module on all sides and the top. A maintenance window on one end of the side panel is detachably equipped with a maintenance window cover 3 with an external sealing design, which is convenient to open for maintenance of internal components including fuses and BMU. For example, the maintenance window cover is connected to the cover 2 by a first screw 32, and there is a first foam sealing strip 31 between the maintenance window cover and the cover 2.

[0039] The lower part of the box cover forms a vertical bend, which is bolted to the box body. A sealing strip is arranged between the vertical bend and the box body for sealing.

[0040] According to an exemplary embodiment of this application, a high-voltage plug-in fixing plate 4 with an internal sealing design is arranged on the end side, and a second foam sealing strip 41 is arranged around the opening of the high-voltage plug-in fixing plate and the end side. High-voltage plugs of the energy storage system, such as the system's positive connector 5, negative connector 6, and MSD socket 7, are fixed on the high-voltage plug-in fixing plate. Exemplarily, the high-voltage plug-in fixing plate is connected to the tank cover using a second screw 42.

[0041] According to an exemplary embodiment of this application, the present invention integrates a liquid-cooled energy storage system, which supports an energy storage battery module above a liquid-cooled plate. The energy storage battery module includes multiple sub-modules, each fixed as a whole. The multiple sub-modules are connected in the X direction by a first fixing plate and in the Y direction by a second fixing plate, ultimately forming an integrated whole structure. This makes the structure of the energy storage battery module of the system more stable, forming an overall stable structure and improving the stability of the system.

[0042] In some embodiments, a protective plate may be arranged on the bottom surface of the liquid cooling plate to cover the outer bottom surface of the liquid cooling plate to form a protective structure. An insulation layer, such as insulating foam, may be arranged between the protective plate and the liquid cooling plate to form an insulation structure on the bottom of the liquid cooling plate, thereby preventing energy loss and improving the liquid cooling effect.

[0043] 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.

[0044] 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.

[0045] 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 integrated liquid-cooled energy storage system, characterized in that, The device includes a housing with an integrated liquid cooling plate and an energy storage battery module arranged above and supported by the liquid cooling plate. The energy storage battery module includes multiple sub-modules, each fixed as a whole. The multiple sub-modules are connected in the X direction by a first fixing plate and in the Y direction by a second fixing plate, ultimately forming an integrated whole structure.

2. The integrated liquid-cooled energy storage system according to claim 1, characterized in that, The second fixing plate and the end plate of the submodule are detachably connected by fasteners, and the first fixing plate and the second fixing plate are detachably connected by fasteners.

3. The integrated liquid-cooled energy storage system according to claim 1, characterized in that, The second fixing plate and the first fixing plate are pre-drilled with mounting holes for fasteners, and the second fixing plate and the first fixing plate are fixed together by fasteners.

4. The integrated liquid-cooled energy storage system according to claim 1, characterized in that, The second fixing plate is an L-shaped plate, which includes an end plate connecting fixing plate for connecting with the end plates on the same side of multiple sub-modules stacked in the Y direction, and multiple spaced first fixing plate connecting plates connected by the end plate connecting fixing plate by vertical bending.

5. The integrated liquid-cooled energy storage system according to claim 1, characterized in that, The first fixing plate is an I-shaped plate, and there are multiple of them.

6. The integrated liquid-cooled energy storage system according to claim 1, characterized in that, The bottom of the end plate of the submodule is fixed to the module crossbeam, and the module crossbeam is connected and fixed to the upper surface of the liquid cooling plate.

7. The integrated liquid-cooled energy storage system according to claim 1, characterized in that, The submodule has end plates at both ends, and the end plates and the battery modules formed by stacked cells between the end plates are tied together with strapping to form an integral submodule.

8. The integrated liquid-cooled energy storage system according to claim 1, characterized in that, The first fixing plate has an elongated hole for installing clips to secure the wire harness.

9. The integrated liquid-cooled energy storage system according to claim 1, characterized in that, The upper end of the enclosure is connected to a cover, which has a side panel and a top that surround and cover the energy storage battery module on all four sides and the top. One end of the side panel has a maintenance window with an externally sealed maintenance window cover, which is easy to open for maintenance of internal components including fuses and BMU.

10. The integrated liquid-cooled energy storage system according to claim 9, characterized in that, A high-pressure plug fixing plate with an internal sealing design is arranged on the end side, and foam sealing strips are arranged around the opening of the high-pressure plug fixing plate and the end side.

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