Injection molded energy storage battery upper cover structure

Abstract

The utility model discloses an injection moulded energy storage battery upper cover structure relates to energy storage battery upper cover field, including upper cover body and the outer edge fixed in the upper cover body outside, the both sides and the end surface of upper cover body all are fixed with the protruding block, the protruding block of upper cover body side and the protruding block of the edge of upper cover body are connected with each other, and the spacing is left between two adjacent protruding blocks, and the outer periphery reinforcing structure formed by protruding block, the arc shape of arc arch disperses pressure design, and the integral injection moulding process of upper cover body and each component, the structural strength of upper cover whole is promoted together, can effectively resist the external force impact and extrusion in transportation, installation process, avoids the deformation of upper cover, simultaneously, the sealing design of outer edge and upper cover body can effectively block the dust, the moisture of outside and enter the battery inside, protects internal element.

Description

Technical Field

[0001] This utility model relates to the field of energy storage battery top cover, and in particular to an injection-molded energy storage battery top cover structure. Background Technology

[0002] With the rapid development of new energy storage technology, the application scenarios of energy storage batteries are constantly expanding, from home energy storage devices to industrial-grade backup power systems. The requirements for the overall performance of batteries are increasing daily. As the "top-level protective barrier" of the energy storage battery, the performance of the top cover directly affects the battery's safety, stability, and lifespan. In the overall structure of an energy storage battery, the top cover not only needs to seal and protect the internal components such as battery cells and circuit boards, preventing the intrusion of external dust, moisture, and other impurities, but also must have sufficient structural support capabilities.

[0003] Currently, the top covers of energy storage batteries on the market generally have several technical shortcomings: First, the structural design is highly homogenized, with most top covers adopting a single flat injection molding structure and lacking targeted reinforcement design. In home energy storage scenarios, if the battery is accidentally tilted, the top cover is prone to breakage due to concentrated force on the corners.

[0004] Therefore, it is necessary to propose an injection-molded energy storage battery cover structure to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide an injection-molded energy storage battery cover structure to solve the problem of serious homogenization in the design of energy storage battery cover structures. Most covers adopt a single flat injection molding structure and lack targeted reinforcement design. In home energy storage scenarios, if the battery is accidentally tilted, the cover is prone to breakage due to concentrated force on the corners.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an injection-molded energy storage battery cover structure, including a cover body and an outer edge fixed to the outside of the cover body. Protruding blocks are fixed on both sides and end faces of the cover body. The protruding blocks on the side of the cover body and the protruding blocks on the edge of the cover body are connected to each other, and a gap is left between two adjacent protruding blocks.

[0007] The upper cover body has multiple arc-shaped arches on one side near the end face inside. The arc-shaped arches are pushed up towards the center of the upper cover body. The multiple arc-shaped arches are fixed to the upper cover body. The arc-shaped arches have threaded openings inside. The threaded openings have extrusion ends installed inside the threaded openings. The extrusion ends have heat dissipation holes inside.

[0008] Preferably, the bottom end of the extrusion end extends out of the upper cover body, and an end cap is fixed at the bottom of the protrusion end, with the bottom end of the end cap flush with the bottom end of the upper cover body.

[0009] Preferably, the top of the extrusion end extends into the interior of the upper cover body, and a buffer pad is fixed on the surface of the extended end.

[0010] Preferably, multiple contact heads are fixed along the height on both sides of the inner side of the upper cover body. The multiple contact heads are hemispherical and elastic.

[0011] Preferably, the top four corners of the upper cover body are all chamfered, and the side of the upper cover body is provided with an indicator arrow.

[0012] Preferably, the radius of the outer side of the upper cover body is greater than the radius of the side of the upper cover body away from the outer side.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] 1. The outer peripheral reinforcement structure formed by the protruding block, the arc-shaped pressure dispersion design of the arch, and the integrated injection molding process of the top cover body and various components, together improve the overall structural strength of the top cover, which can effectively resist the impact and squeezing of external forces during transportation and installation, and avoid deformation of the top cover; at the same time, when the arch is installed, the protruding surface can apply pressure support to the battery surface to prevent the battery from shifting, and also prevent the battery from being stuck in the top cover body, causing difficulties in subsequent disassembly and replacement.

[0015] 2. The threaded adjustment design of the extrusion end allows for flexible adjustment of the insertion depth according to the height of the internal components of the battery. Combined with the elastic contact of the buffer pad and the lateral limiting of the contact head, it can not only fix components of different specifications, but also avoid damage to the components caused by rigid contact. At the same time, the extrusion end can undergo slight deformation during the extrusion process, which can increase the contact area with the surface of the component, improve the friction to prevent the component from shifting, and absorb the vibration and impact during battery operation through its own deformation.

[0016] 3. Furthermore, since the extrusion end is in contact with the battery surface, the heat dissipated by the battery can be discharged from the heat dissipation holes of the extrusion end. The design of multiple extrusion ends can accelerate the heat dissipation efficiency. The extrusion end, through the fixed fit with the central threaded opening of the arc arch, becomes a "rigid support point" in the middle of the arc arch, which avoids the arc arch from breaking after long-term use and increases the structural strength of the arc arch. When there are size deviations of the internal components of the battery or the need for fine adjustment of the installation position, it is not necessary to replace the entire top cover. The fit can be achieved by simply rotating the end cover to adjust the extension length of the extrusion end.

[0017] 4. The trapezoidal box uses multiple tubes at the bottom to precisely insert into the heat dissipation holes of the extrusion end, "centralizing" the heat dissipation outlets that were scattered at each extrusion end. This allows all the hot air that was originally scattered from a single heat dissipation hole to converge into the internal cavity of the trapezoidal box, preventing the heat dissipation efficiency from decreasing after the hot air diffuses at the top of the cover. When the exhaust fan is powered on, it can quickly extract the hot air accumulated inside the box and discharge it directly to the outside of the cover through the ventilation slot, increasing the heat dissipation efficiency. The filter screen inside the trapezoidal box divides the cavity into upper and lower areas, preventing external dust from entering the body of the cover downwards.

[0018] 5. Meanwhile, the trapezoidal box's "gathering from bottom to top" shape design further optimizes the heat dissipation path: The gathering structure allows hot air inside the box to naturally gather upwards, coordinating with the exhaust direction of the exhaust fan, reducing the residence time of hot air inside the box. After multiple tubes are precisely inserted into the compression end, the trapezoidal box can protect the entire top of the cover body, while preventing external dust from entering the interior of the cover body through the heat dissipation holes. It also protects the compression end exposed outside the cover body, reducing the risk of impact. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the injection-molded energy storage battery cover structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the structure of the contact head of this utility model.

[0021] Figure 3 This utility model Figure 1 Enlarged diagram of point A in the middle.

[0022] Figure 4 This is a schematic diagram of the trapezoidal box of this utility model.

[0023] Figure 5 This is a schematic diagram of the internal structure of the trapezoidal box of this utility model.

[0024] In the diagram: 1. Top cover body; 2. Protruding block; 3. Chamfer; 4. Indicator arrow; 5. Arched arch; 6. Extrusion end; 7. End cap; 8. Buffer pad; 9. Heat dissipation hole; 10. Contact head; 11. Outer edge; 12. Trapezoidal box; 13. Ventilation slot; 14. Insert tube; 15. Filter screen; 16. Exhaust fan. Detailed Implementation

[0025] Example 1

[0026] This utility model provides, for example Figures 1-5The above-displayed injection-molded energy storage battery cover structure includes a cover body 1 and an outer edge 11 fixed to the outside of the cover body 1. The outer edge 11 and the cover body 1 are manufactured by an integral injection molding process. The outer edge 11 is arranged around the outer periphery of the cover body 1 to form a complete outer protective structure. When assembled with the battery casing, it can increase the contact range between the cover and the casing and improve the overall sealing effect.

[0027] Protruding blocks 2 are fixed on both sides and end faces of the upper cover body 1. The protruding blocks 2 on the sides of the upper cover body 1 and the protruding blocks 2 on the edges of the upper cover body 1 are connected to each other, and a gap is left between two adjacent protruding blocks 2. The protruding blocks 2 and the upper cover body 1 are integrally injection molded structures to ensure connection strength. Specifically, the protruding blocks 2 on the long sides of the upper cover body 1 are connected to the protruding blocks 2 on the short edges of the upper cover body 1 at both ends, forming a continuous reinforcing structure distributed along the outer periphery of the upper cover body 1. This structure can effectively improve the bending resistance of the upper cover body 1. At the same time, a fixed gap is left between any two adjacent protruding blocks 2. This gap will not destroy the reinforcing effect formed by the protruding blocks 2, but will also provide a certain ventilation space for the surface of the upper cover body 1, and will also reduce the overall weight of the upper cover and avoid structural redundancy.

[0028] Multiple arc-shaped arches 5 are provided on one side of the upper cover body 1 near the end face. The arc-shaped arches 5 are pushed towards the center of the upper cover body 1. The multiple arc-shaped arches 5 are fixed to the upper cover body 1. The arc-shaped structure design of the arc-shaped arches 5 can disperse the external pressure in all directions, further enhancing the deformation resistance of the upper cover body 1. At the center of each arc-shaped arch 5, a threaded opening is provided. A pressing end 6 is installed in the threaded opening through the threaded engagement. The pressing end 6 can be rotated and adjusted along the axis of the threaded opening to realize the action of extending into or retracting from the upper cover body 1. At the same time, a heat dissipation hole 9 is provided inside the pressing end 6 along its axis. The heat dissipation hole 9 passes through the upper and lower ends of the pressing end 6 and can directly connect the interior of the upper cover body 1 with the external space.

[0029] The bottom of the extrusion end 6 extends out of the upper cover body 1, and an end cap 7 is fixed to the bottom of the extended end. The bottom of the end cap 7 is flush with the bottom of the upper cover body 1. The top of the extrusion end 6 extends into the interior of the upper cover body 1, and a buffer pad 8 is fixed to the surface of the extended end. The "longitudinal support" of the extrusion end 6 and the "lateral dispersion" of the arc arch 5 form a mechanical complement—when external pressure is applied to the upper cover body 1, the arc arch 5 disperses the pressure to the edges of the upper cover body 1, while the extrusion end 6 bears the vertical stress in the middle. The two work together to construct a "three-dimensional load-bearing structure" to increase the structural strength.

[0030] In the actual operation of this utility model, the user can take out or screw in the extrusion end 6 by rotating the end cap 7. When there are other components inside the upper cover body 1, the surface of the component is pressed by screwing in the extrusion end 6, thereby reducing the displacement phenomenon of the upper cover body 1. At the same time, the internal heat can be discharged from the heat dissipation hole 9 through the extrusion end 6. In addition, the bottom end of the end cap 7 is flush with the bottom end of the upper cover body 1.

[0031] When the internal components of the battery (such as cells, circuit boards, sensors, etc.) are installed below the upper cover body 1, the operator can rotate the bottom end cap 7 to drive the pressing end 6 to extend into the upper cover body 1 along the threaded axis until the top buffer pad 8 is in close contact with the surface of the component and generates appropriate pressure. This "threaded adjustment" fixing method allows for flexible adjustment of the extension length of the extrusion end 6 according to the thickness and installation height of different components, adapting to various battery internal structures. This avoids component loosening due to insufficient fixing force or component damage due to excessive force, achieving "precise fit and flexible fixing." At the same time, the extrusion end 6 can undergo slight deformation during the extrusion process, which can increase the contact area with the component surface, improve friction to prevent component displacement, and absorb the vibration and impact during battery operation through its own deformation. When the battery is subjected to external vibration or internal component heat expansion, the buffer pad 8 can buffer the hard collision between the component and the extrusion end 6, avoiding wear on the component surface or damage to the internal structure of the cover body 1 due to impact. It also eliminates the potential for abnormal noise or structural damage caused by collision during vibration after the component loosens and gaps are formed between it and the cover body 1.

[0032] Multiple contact heads 10 are fixed along the height on both sides of the inner side of the top cover body 1. These contact heads 10 are hemispherical and elastic. All contact heads 10 are hemispherical and are integrally injection molded with the top cover body 1 using an elastic material (such as elastic plastic or rubber), providing good elastic deformation capability. When the internal components of the battery are installed below the top cover body 1, the contact heads 10 can contact the sides of the components and generate slight pressure, achieving lateral restraint of the components.

[0033] The top four corners of the upper cover body 1 are all chamfered 3, and the sides of the upper cover body 1 are provided with indicator arrows 4. This can effectively prevent operators from being scratched by the corners during assembly, and reduce the risk of corner damage due to collisions during transportation; on one side of the upper cover body 1 (preferably the front or an easily observable side), an indicator arrow 4 is made by embossing or intaglio printing. The direction of the indicator arrow 4 is consistent with the correct installation direction of the upper cover body 1, providing clear directional guidance for assemblers.

[0034] The radius of the side of the top cover body 1 facing the outer edge 11 is larger than the radius of the side of the top cover body 1 away from the outer edge 11, so that the side of the top cover body 1 forms a slightly inclined surface. This structure can guide the top cover body 1 to quickly embed into the housing when assembling with the battery housing, reducing the assembly difficulty.

[0035] Example 2

[0036] like Figure 4 , 5 As shown, a trapezoidal box 12 is provided at the top of the upper cover body 1. The trapezoidal box 12 has a cavity inside. The interior of the trapezoidal box 12 is divided into upper and lower areas by a filter screen 15. Multiple exhaust fans 16 are fixed at the top of the filter screen 15. A ventilation slot 13 is opened at the top of the trapezoidal box 12, corresponding to the positions of the multiple exhaust fans 16. The air outlet of the exhaust fan 16 corresponds to the ventilation slot 13.

[0037] Multiple insertion tubes 14 are connected to the bottom of the trapezoidal box 12, and these tubes 14 communicate with the internal area of ​​the trapezoidal box 12. After the upper cover body 1 is installed, the multiple insertion tubes 14 can be inserted into the heat dissipation holes 9 of the compression end 6. Through the connection between the trapezoidal box 12 and the upper cover body 1, all the heat discharged from the compression end 6 can be collected inside the trapezoidal box 12, and then discharged by the exhaust fan 16. At the same time, the trapezoidal box 12 also protects the top of the upper cover body 1 and shields the end of the compression end 6, preventing external dust from entering the interior of the upper cover body 1 through the heat dissipation holes 9. In addition, the "full coverage shielding" of the end of the compression end 6 by the trapezoidal box 12 can also prevent external liquids and foreign objects (such as metal shavings) from directly contacting the compression end 6 and the heat dissipation holes 9. Especially during battery assembly or maintenance, it can prevent structural damage caused by tools accidentally touching the compression end, further improving the safety of the upper cover.

[0038] Furthermore, the filter 15 prevents external dust from entering the lower area of ​​the trapezoidal box 12. Even if a small amount of dust enters the trapezoidal box 12 from the ventilation slot 13, it will be intercepted by the filter 15 in the upper area, preventing it from entering the lower area and contaminating the internal components of the top cover. It also provides installation space for the exhaust fan 16. The converging shape of the trapezoidal box 12 from bottom to top facilitates upward heat dissipation, increasing heat dissipation efficiency. Combined with the use of multiple extrusion ends 6, installation is convenient and simple.

Claims

1. A molded energy storage battery cover structure, comprising a cover body (1) and an outer edge (11) fixed to the outside of the cover body (1), characterized in that: The upper cover body (1) has protruding blocks (2) fixed on both sides and end face. The protruding blocks (2) on the side of the upper cover body (1) and the protruding blocks (2) on the edge of the upper cover body (1) are connected to each other, and there is a gap between two adjacent protruding blocks (2). The upper cover body (1) has multiple arc-shaped arches (5) on one side near the end face inside. The arc-shaped arches (5) are pushed up towards the center of the upper cover body (1). The multiple arc-shaped arches (5) are fixed on the upper cover body (1). The arc-shaped arches (5) have threaded openings inside. The threaded openings have extrusion ends (6) installed in the threaded openings. The extrusion ends (6) have heat dissipation holes (9) inside.

2. The injection-molded energy storage battery cover structure according to claim 1, characterized in that: The bottom end of the extrusion end (6) extends out of the upper cover body (1), and an end cap (7) is fixed at the bottom of the protrusion end. The bottom end of the end cap (7) is flush with the bottom end of the upper cover body (1).

3. The injection-molded energy storage battery cover structure according to claim 2, characterized in that: The top of the extrusion end (6) extends into the interior of the upper cover body (1), and a buffer pad (8) is fixed on the surface of the extended end.

4. The injection-molded energy storage battery cover structure according to claim 1, characterized in that: The upper cover body (1) has multiple contact heads (10) fixed along the height on both sides inside. The multiple contact heads (10) are hemispherical and elastic.

5. The injection-molded energy storage battery cover structure according to claim 4, characterized in that: The top four corners of the upper cover body (1) are all chamfered (3), and the side of the upper cover body (1) is provided with an indicator arrow (4).

6. The injection-molded energy storage battery cover structure according to claim 1, characterized in that: The radius of the outer side (11) of the upper cover body (1) is greater than the radius of the side of the upper cover body (1) away from the outer side (11).

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