A waterproof structure of an energy storage stack battery pack

Abstract

The utility model discloses a kind of energy storage stacked battery pack waterproof structure, it is related to battery energy storage technical field.The structure includes base, battery box and top box, modularization stacking is realized by up-down concave-convex nesting structure, and three-level waterproof protection system is set: first-level protection is by battery box bottom water channel drainage physical barrier, second-level protection is sealed by silica gel sheet, third-level protection is formed hierarchical drainage system by relying on base radial flow guide groove and top box 5 ° inclined water guide surface, cooperate superhydrophobic coating active hydrophobicity.The utility model is by progressive waterproof design, effectively blocks outside water infiltration and quickly drains ponding, modularization structure supports independent unit maintenance, reduces dismounting cost;Flow guide groove and inclined surface cooperate effectively improve drainage efficiency, while reduce the amount of sealing material, simple structure.It is applicable to the waterproof optimization demand of outdoor energy storage system.

Description

Technical Field

[0001] This utility model belongs to the field of new energy storage equipment manufacturing technology, and in particular relates to a waterproof structure for energy storage stacked battery packs. Background Technology

[0002] Currently, in the energy storage industry, stacked batteries are often installed on balconies or under eaves to free up indoor space. While these products need to be waterproof, rain protection is usually sufficient. However, conventional designs require fully welded and glued sheet metal enclosures, and additional sealing rings are needed for the enclosure and cover to achieve waterproofing. This approach is cumbersome and costly in terms of production and assembly; it also relies heavily on manual labor, resulting in poor waterproofing stability. In the increasingly competitive energy storage industry, traditional stacking designs cannot meet the industry's cost reduction needs. Utility Model Content

[0003] A waterproof structure for an energy storage stacked battery pack includes a base, at least one battery box, and a top box. The base and the battery box, adjacent battery boxes, and the battery box and the top box are all connected by a concave-convex fit structure. The bottom edge of the battery box is provided with a drainage structure.

[0004] Preferably, the concave-convex mating structure includes: a first protrusion on the upper surface of the base, a first groove on the lower surface of the battery box, a second protrusion on the upper surface of the battery box, and a second groove on the lower surface of the top box.

[0005] Preferably, the inner ring of the first groove of the battery box is provided with a sealing ring, which engages with the second protrusion in the first groove.

[0006] Preferably, silicone sheets are provided between the base and the battery box, between adjacent battery boxes, and between the battery box and the top box.

[0007] Preferably, the first groove forms a water channel with the side of the battery box, and the water channel has a conical drainage hole.

[0008] Preferably, the upper surface of the top box is a 5-10° inclined surface and is provided with a superhydrophobic coating.

[0009] Preferably, the mating clearance of the concave-convex mating structure is 0.2-0.5mm, and the protrusion height is 8-15mm.

[0010] Compared to existing technologies, the advantages of this solution are that it eliminates the complex full welding process and the extensive grinding and internal gluing steps required for sheet metal chassis production, significantly reducing labor costs and instability caused by manual operation. This invention effectively utilizes structural design to achieve waterproofing and drainage functions, while the sheet metal can be formed through bending and small-scale welding. It reduces costs while avoiding the environmental benefits of using industrial adhesives and ensuring overall waterproof stability. Furthermore, the black silicone sheets installed between each battery compartment not only provide waterproofing but also, through their superior ductility, prevent insufficient flatness of the sheet metal chassis, achieving an effect similar to decorative lines. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the top structure of the battery box of this utility model; Figure 3 This is a schematic diagram of the bottom structure of the battery box of this utility model; Figure 4 This is a schematic diagram of the base structure of this utility model; Figure 5 This is a schematic diagram of the top box structure of this utility model; As shown in the above diagram: base 1; battery box 2; top box 3; first protrusion 11; second protrusion 21; first groove 22; sealing ring 23; drain hole 24; second groove 31. Detailed Implementation

[0012] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. The accompanying drawings show preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0013] It should be noted that when a component is described as being "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is described as being "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "fixed," "integral," "left," "right," and similar expressions used in this specification are for illustrative purposes only, and in the figures, structurally similar units are labeled with the same reference numerals.

[0014] like Figure 1-5As shown, the waterproof structure of the energy storage stacked battery pack in this embodiment includes a base 1, at least one battery box 2, and a top box 3. The base and the battery box, adjacent battery boxes, and the battery box and the top box are all connected by a concave-convex fit structure. The bottom edge of the battery box is provided with a drainage structure.

[0015] Preferably, the concave-convex mating structure includes: a first protrusion 11 on the upper surface of the base, a first groove 22 on the lower surface of the battery box, a second protrusion 21 on the upper surface of the battery box, and a second groove 31 on the lower surface of the top box.

[0016] Preferably, the inner ring of the first groove 22 of the battery box is provided with a sealing ring 23, which engages with the second protrusion 21 in the first groove.

[0017] Preferably, silicone sheets are provided between the base and the battery box, between adjacent battery boxes, and between the battery box and the top box.

[0018] Preferably, the first groove 22 forms a water channel with the side of the battery box, and the water channel has a conical drainage hole 24.

[0019] Specifically, the first groove 22 at the bottom of the battery box 2 is aligned with the first protrusion 11 of the base 1, and is pressed vertically down until fully nested, with a fitting gap of 0.3±0.05mm. The first groove 22 at the bottom of the battery box 2 is pressed down vertically to nest the second protrusion of the lower battery box. A sealing ring 23 is embedded in the first groove 22. The first groove and the sealing ring are fitted together with the lower second protrusion, and the sealing ring is compressed to generate radial expansion force and axial compression force when pressed down. The bottom of the side wall of the battery box 2 forms a water channel with the side wall. A conical drainage hole 24 is opened at the corner of the water channel to drain the seepage water. The annular protrusion 21 at the top of the upper battery box 2 is embedded in the groove 22 of the lower battery box. A silicone sheet is added between adjacent layers. The adjacent battery boxes 2 ensure that the fitting gap of the concave and convex structure is 0.3mm. The silicone sheet is evenly filled at the edge of the contact surface to compensate for the sheet metal flatness error of ±0.2mm.

[0020] Preferably, the upper surface of the top box 3 is a 5-10° inclined surface, and the surface is provided with a superhydrophobic coating.

[0021] Preferably, the mating clearance of the concave-convex mating structure is 0.2-0.5mm, and the protrusion height is 8-15mm.

[0022] Specifically, the groove 31 at the bottom of the top box 3 is nested with the protrusion 21 of the top battery box, the upper surface of the top box is processed into a 7° inclined water-guiding surface, and a superhydrophobic coating with a contact angle ≥150° and a thickness of 50±5μm is sprayed on it.

[0023] The modular stack is equipped with a three-level waterproof protection system. The first level of protection is physically blocked by the drainage channel at the bottom of the battery box. The second level of protection is the sealing of adjacent battery boxes with silicone sheets. The third level of protection relies on the radial drainage channels of the base and the 5° inclined water-guiding surface of the top box to form a layered drainage system, combined with the superhydrophobic coating for active water repellency.

[0024] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention.

[0025] It should be noted that the above-mentioned technical features can be combined with each other to form various embodiments not listed above, all of which are considered to be within the scope of this utility model specification; and, for those skilled in the art, improvements or modifications can be made based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims of this utility model.

Claims

1. An energy storage stack battery waterproof structure, characterized by, It includes a base, at least one battery box, and a top box. The base and the battery box, adjacent battery boxes, and the battery box and the top box are all connected by a concave-convex fitting structure. The bottom edge of the battery box is provided with a drainage structure.

2. The waterproof structure of an energy storage stack battery pack according to claim 1, wherein, The concave-convex mating structure includes: a first protrusion on the upper surface of the base, a first groove on the lower surface of the battery box, a second protrusion on the upper surface of the battery box, and a second groove on the lower surface of the top box.

3. The energy storage stack battery waterproof structure of claim 2, wherein, The battery box has a sealing ring on the inner ring of the first groove, which engages with the second protrusion.

4. The waterproof structure of an energy storage stack battery pack according to claim 2, wherein, Silicone sheets are provided between the base and the battery box, between adjacent battery boxes, and between the battery box and the top box.

5. The energy storage stack battery waterproof structure of claim 1, wherein, The first groove forms a water channel with the side of the battery box, and the water channel has a conical drainage hole.

6. The energy storage stack battery waterproof structure of claim 1, wherein, The upper surface of the top box is a 5-10° inclined surface, and the surface is coated with a superhydrophobic coating.

7. The energy storage stack battery waterproof structure of claim 1, wherein, The fitting clearance of the concave-convex mating structure is 0.2-0.5mm, and the protrusion height is 8-15mm.

Images