High-strength energy storage lower box structure

Abstract

The utility model discloses a high -strength energy storage lower box structure, including liquid cooling board, the top of liquid cooling board is provided with module fixed beam, the bottom of liquid cooling board is provided with bottom bracket, and bottom bracket includes a pair of parallel first hollow square tube, the second hollow square tube is connected in two first hollow square tube both ends, forms the rectangular frame, a pair of first hollow square tube between transverse connection has a plurality of even distribution's concave support board, and the top of concave support board is welded with a plurality of metal gaskets in the bottom of liquid cooling board, and the length of metal gasket is same with concave support board width, and first hollow square tube and second hollow square tube all are provided with a plurality of through -type maintenance through -hole for assembling and disassembling bolt, and the inner wall of maintenance through -hole is equipped with the guide slot for limiting bolt radial displacement, effectively solved the current energy storage lower box structure structural strength deficiency and maintenance difficult and long strip type metal gasket material waste serious and exposed weld joint influence the problem of overall aesthetic property.

Description

Technical Field

[0001] This utility model relates to the field of energy storage underbox technology, and in particular to a high-strength energy storage underbox structure. Background Technology

[0002] The energy storage enclosure typically refers to a component within an energy storage system, primarily used to house and protect key components such as battery cells, inverters, and controllers within the energy storage device. It is the external structural part of the energy storage system, responsible for providing necessary physical protection, shielding, and heat dissipation.

[0003] However, the existing energy storage under-box structure uses a single-layer hollow square tube directly welded to a liquid cooling plate, which is prone to deformation under long-term load, resulting in poor connection stability between the liquid cooling plate and the battery module; the bolt mounting holes are only opened on one side, and the bolts are easy to fall into the hollow square tube during disassembly and assembly, requiring disassembly of the entire structure to remove them, which is time-consuming and labor-intensive; the bottom of the liquid cooling plate uses a continuous long strip of metal gasket, which results in serious material waste and exposed welds that affect the overall aesthetics. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a high-strength energy storage lower housing structure, effectively solving the problems of insufficient strength and maintenance difficulties in existing energy storage lower housing structures, as well as the serious waste of long strip metal gaskets and the impact of exposed welds on the overall aesthetics.

[0005] This utility model adopts the following technical solution: a high-strength energy storage lower box structure, including a liquid cooling plate, a module fixing beam on the top of the liquid cooling plate, and a bottom bracket at the bottom of the liquid cooling plate. The bottom bracket includes a pair of parallel first hollow square tubes and a second hollow square tube connected to both ends of the two first hollow square tubes to form a rectangular frame. Several evenly arranged concave support plates are horizontally connected between the pair of first hollow square tubes. Several metal gaskets are welded to the top of the concave support plates and the bottom of the liquid cooling plate. The length of the metal gaskets is the same as the width of the concave support plates. Both the first hollow square tubes and the second hollow square tubes are provided with several through-holes for loading and unloading bolts. The inner wall of the maintenance through-holes is provided with guide grooves for limiting the radial displacement of the bolts.

[0006] Furthermore, the first hollow square tube and the second hollow square tube are fixedly connected to the liquid cooling plate by the bolts, wherein the diameter of the bolt head is larger than the inner diameter of the maintenance through hole, and the tail extends to the end of the guide groove for limitation.

[0007] Furthermore, the independent block-shaped metal pad is rectangular or circular, and its surface is treated with an anti-rust coating.

[0008] Furthermore, the surface of the base bracket is coated with a composite anti-corrosion coating.

[0009] Furthermore, the surfaces of the first hollow square tube, the second hollow square tube, and the liquid cooling plate are all blackened.

[0010] The advantages of this invention are as follows: The concave support plate laterally connects two first hollow square tubes, forming a grid-like support structure, significantly improving the bending and torsional resistance of the base bracket; independent block-shaped metal gaskets precisely cover the top of the concave support plate, enhancing the local connection strength between the liquid cooling plate and the base bracket. Through-hole maintenance holes, combined with guide grooves, limit the radial displacement of bolts, eliminating concerns about bolts falling into the square tubes during disassembly and assembly; the bolt head diameter is larger than the inner diameter of the through hole, and the tail is limited by the guide groove, achieving rapid positioning and fixation. Independent block-shaped metal gaskets replace the long strip design, reducing material usage and ensuring a neat weld distribution, improving appearance consistency; blackening treatment unifies the surface color of components, enhancing the overall industrial aesthetics. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the base bracket structure of this utility model;

[0013] Figure 3 This is a schematic diagram of the base bracket structure of this utility model;

[0014] Figure 4 This is an enlarged schematic diagram of part A of the present invention.

[0015] In the figure, 1-liquid cooling plate, 2-module fixing beam, 3-bottom bracket, 31-first hollow square tube, 32-second hollow square tube, 33-concave support plate, 34-metal gasket, 35-maintenance through hole, 36-bolt, 351-guide groove. Detailed Implementation

[0016] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0017] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "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.

[0018] See Figure 1-4 As shown, a high-strength energy storage lower box structure includes a liquid-cooled plate 1, a module fixing beam 2 on the top of the liquid-cooled plate 1, and a bottom bracket 3 at the bottom of the liquid-cooled plate 1. The bottom bracket 3 includes a pair of parallel first hollow square tubes 31 and a second hollow square tube 32 connected to both ends of the two first hollow square tubes 31 to form a rectangular frame. Several evenly arranged concave support plates 33 are horizontally connected between the pair of first hollow square tubes 31. Several metal gaskets 34 are welded to the top of the concave support plates 33 and the bottom of the liquid-cooled plate 1. The length of the metal gaskets 34 is the same as the width of the concave support plates 33. Several through-hole maintenance holes 35 for loading and unloading bolts 36 are opened in both the first hollow square tubes 31 and the second hollow square tubes 32. The inner wall of the maintenance hole 35 is provided with a guide groove 351 for limiting the radial displacement of the bolts 36.

[0019] The first hollow square tube 31 and the second hollow square tube 32 are fixedly connected to the liquid cooling plate 1 by bolts 36. The diameter of the head of the bolt 36 is larger than the inner diameter of the maintenance through hole 35, and the tail extends to the end of the guide groove 351 for limitation. The bolt 36 is fixed through to strengthen the rigid connection between the liquid cooling plate 1 and the base bracket 3, preventing loosening. The head of the bolt 36 and the limiting structure of the guide groove 351 provide double constraint to ensure that the bolt 36 is always in a controllable position during the disassembly and assembly process.

[0020] The independent block metal gasket 34 is rectangular or circular, with a rust-proof coating. The independent gasket replaces the traditional long strip design, reducing material waste. The regular distribution of weld seams improves the uniformity of appearance. The surface coating effectively isolates moisture, prevents the spread of rust in the welded area, and extends service life.

[0021] The base bracket 3 is coated with a composite anti-corrosion coating, providing a double anti-corrosion barrier to resist erosion from harsh environments such as humidity and salt spray.

[0022] The surfaces of the first hollow square tube 31, the second hollow square tube 32, and the liquid cooling plate 1 are all blackened. The blackening treatment forms a dense oxide layer, which improves the corrosion resistance of the metal surface, unifies the surface color of the components, and enhances the overall aesthetics and professionalism of the structure.

[0023] Working principle: The battery module is fixed on the module fixing beam 2, and its load is transferred to the base bracket 3 through the liquid cooling plate 1. The first and second hollow square tubes of the rectangular frame of the base bracket 3 and the concave support plate 33 form a distributed support network, which evenly distributes the concentrated load to the entire base bracket and avoids local stress concentration. During installation, the bolt 36 is inserted from one side of the through maintenance hole 35, slides along the guide groove 351 to the limit point, the head is stuck on the outside of the through hole, and the tail is fixed by the nut. The guide groove 351 restricts the radial displacement of the bolt, ensuring that the bolt is always in a controllable position during disassembly and assembly, and preventing it from falling into the square tube. The independent block metal gasket 34 is precisely aligned and welded to the top of the concave support plate 33 to reduce thermal deformation and ensure the planar fit between the liquid cooling plate 1 and the base bracket 3. The blackening treatment forms a dense oxide layer on the metal surface, which serves as a basic anti-corrosion barrier.

[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0025] 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. A high-strength energy storage lower housing structure, comprising a liquid cooling plate (1), characterized in that: The top of the liquid cooling plate (1) is provided with a module fixing beam (2), and the bottom of the liquid cooling plate (1) is provided with a bottom bracket (3). The bottom bracket (3) includes a pair of parallel first hollow square tubes (31) and a second hollow square tube (32) connected to both ends of the two first hollow square tubes (31) to form a rectangular frame. A number of evenly arranged concave support plates (33) are horizontally connected between the pair of first hollow square tubes (31). A number of metal gaskets (34) are welded to the top of the concave support plate (33) and the bottom of the liquid cooling plate (1). The length of the metal gaskets (34) is the same as the width of the concave support plate (33). Both the first hollow square tube (31) and the second hollow square tube (32) are provided with a number of through maintenance holes (35) for loading and unloading bolts (36). The inner wall of the maintenance hole (35) is provided with a guide groove (351) for limiting the radial displacement of the bolt (36).

2. The high-strength energy storage lower housing structure according to claim 1, characterized in that: The first hollow square tube (31) and the second hollow square tube (32) are fixedly connected to the liquid cooling plate (1) by the bolt (36). The head diameter of the bolt (36) is larger than the inner diameter of the maintenance through hole (35), and the tail extends to the end of the guide groove (351) for limitation.

3. The high-strength energy storage lower housing structure according to claim 1, characterized in that: The metal gasket (34) is rectangular or circular and has a rust-proof coating on its surface.

4. The high-strength energy storage lower housing structure according to claim 1, characterized in that: The base bracket (3) is coated with a composite anti-corrosion coating.

5. The high-strength energy storage lower housing structure according to claim 1, characterized in that: The surfaces of the first hollow square tube (31), the second hollow square tube (32), and the liquid cooling plate (1) are all blackened.

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