Internal fixing structure of battery box and battery box

Abstract

The utility model belongs to the technical field of battery boxes, and discloses a battery box internal fixing structure and a battery box, the battery box internal fixing structure comprises a pouring sealant curing part and a mounting bracket, the pouring sealant curing part is arranged between a battery module and the inner surface of a box body, the mounting bracket is used for limiting and abutting against the battery module, and the mounting bracket is used for limiting and abutting against the battery module. A part of the mounting bracket is embedded in the pouring sealant curing part, and the pouring sealant curing part is fixedly connected between the box body and the mounting bracket, so that the battery module is fixed in the box body. According to the battery box, the effect of fixing the battery module can be achieved, the structural stability and the use safety are ensured, and the arrangement of fixing structures such as bolts is avoided, so that the size and the weight of the battery box can be reduced, and the portability and the light weight of the battery box are enhanced.

Description

Technical Field

[0001] This utility model relates to the field of battery box technology, and in particular to an internal fixing structure for a battery box and a battery box. Background Technology

[0002] With the rapid development of battery technology, electric bicycles, electric motorcycles, and outdoor charging devices are becoming increasingly widespread. While these devices provide users with convenient energy supply, they also place higher demands on the lightweight and portability of battery boxes. Traditional battery box designs often focus on fixing and protecting battery modules, using mechanical structures such as bolts to ensure the stability of battery packs and components such as mounting and securing protective plates. However, this design approach has significant limitations, resulting in a larger overall size and weight for the battery box.

[0003] Therefore, there is an urgent need for an internal fixing structure for the battery box and a battery box in order to solve the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this utility model is to provide an internal fixing structure and a battery box that can fix the battery module, with a small size and weight, while ensuring the structural stability and safety of the battery box.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] An internal fixing structure for a battery box is disposed inside a battery box, the battery box including a box body for accommodating battery modules, the internal fixing structure for the battery box including:

[0007] A potting compound cured component, wherein the potting compound cured component is disposed between the inner surface of the battery module and the housing;

[0008] The mounting bracket is used to limit and abut the battery module. A portion of the mounting bracket is embedded in the potting compound curing component. The potting compound curing component forms a fixed connection between the housing and the mounting bracket to fix the battery module in the housing.

[0009] Preferably, the mounting bracket includes a vertical plate with a concave-convex structure and is embedded in the potting compound curing component. The concave-convex structure is used to increase the connection strength between the vertical plate and the potting compound curing component.

[0010] Preferably, the mounting bracket includes a vertical plate with holes or grooves. The holes or grooves are arranged along the thickness direction of the vertical plate, and the inner wall of the holes or grooves can be limited to abut against the cured potting compound.

[0011] Preferably, the mounting bracket includes a vertical plate with a protrusion, the outer surface of which can be positioned to abut against the cured potting compound.

[0012] Preferably, the vertical plate is provided with at least two protrusions, and adjacent two protrusions are spaced apart to form a notch, and the notch contains a portion of the potting compound cured.

[0013] Preferably, the concave-convex structure includes at least two protrusions and at least two holes or grooves disposed on the vertical plate. In the horizontal direction, the protrusions and the holes or grooves are alternately arranged, and in the vertical direction, the protrusions and the holes or grooves are spaced apart.

[0014] Preferably, the potting compound curing component is provided between the battery module and the circumferential sidewall of the housing, and the distance between the battery module and the circumferential sidewall of the housing is less than 10mm.

[0015] Preferably, the mounting bracket includes a horizontal plate and at least two vertical plates, with one of the vertical plates connected to each of the two oppositely positioned edges of the mounting bracket.

[0016] Preferably, the mounting bracket is a one-piece molded structure.

[0017] A battery box includes a box body, a battery module housed in the box body, and the aforementioned internal fixing structure, wherein the internal fixing structure fixes the battery module to the box body.

[0018] The beneficial effects of this utility model are as follows: By applying the above-mentioned internal fixing structure of the battery box to the battery box, it can not only fix the battery module, ensuring structural stability and safety of use, but also avoid the setting of fixing structures such as bolts, thereby reducing the size and weight of the battery box and enhancing its portability and lightweight. Attached Figure Description

[0019] Figure 1 This is an assembly drawing of the battery box provided in this utility model;

[0020] Figure 2 This is a perspective view of the mounting bracket provided in this utility model;

[0021] Figure 3 This is a vertical cross-sectional view of the battery box provided in this utility model at the location of the baffle.

[0022] Figure 4 This is a vertical cross-sectional view of the battery box provided in this utility model, passing through the notch.

[0023] In the picture:

[0024] 1. Housing; 2. Potting compound cured component; 3. Battery module; 4. Mounting bracket; 41. Horizontal plate; 42. Vertical plate; 421. Waist-shaped hole; 422. Semi-circular hole; 423. Baffle; 424. Notch. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0026] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," "fixed," and "abutting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0029] Example 1:

[0030] like Figures 1 to 4As shown, the present invention provides an internal fixing structure and a battery box. The battery box includes a box body 1 for accommodating a battery module 3. The box body 1 has an internal space for accommodating the battery module 3. An opening is provided at the top of the box body 1, communicating with the internal space, allowing the battery module 3 to be inserted into the box body 1 through the opening. The internal fixing structure includes a potting compound curing component 2 and a mounting bracket 4. A gap is formed between the battery module 3 and the inner surface of the box body 1, and the potting compound curing component 2 fills this gap. The potting compound curing component 2 is formed by curing a fluid adhesive, possessing a certain strength, and effectively filling, bonding, and fixing the battery.

[0031] The mounting bracket 4 can be inserted into the housing 1 through the aforementioned opening. When both the battery module 3 and the mounting bracket 4 are placed inside the housing 1, the mounting bracket 4 can be positioned to abut against the battery module 3, thereby fixing the battery module 3 inside the housing 1. A portion of the mounting bracket 4 can extend into the gap and be embedded in the potting compound curing component 2. After the potting compound curing component 2 has cured, a strong and fixed connection can be formed between the housing 1 and the mounting bracket 4 through the adhesive effect and curing result of the potting compound curing component 2, thereby fixing the housing 1, the mounting bracket 4, and the battery module 3, and fixing the battery module 3 inside the housing 1.

[0032] The aforementioned internal fixing structure of the battery box not only secures the battery module 3, ensuring structural stability and safety, but also eliminates the need for bolts and other fixing structures, thereby reducing the size and weight of the battery box and enhancing its portability and lightweight design.

[0033] Specifically, such as Figure 1 , Figure 2 As shown, in this embodiment, the mounting bracket 4 is manufactured using sheet metal technology. The mounting bracket 4 is an integrally formed structure, comprising a horizontal plate 41 and two vertical plates 42. The horizontal plate 41 and the vertical plates 42 are integrally connected and are both plate-shaped. One side of the horizontal plate 41 can abut against the battery module 3, thereby allowing the base plate of the housing 1 to hold the battery module 3 vertically (e.g., ...). Figure 1 (As shown in the Z-axis) is fixed. At the same time, the side of the horizontal plate 41 away from the battery module 3 can be used to connect electrical components, for example, by using studs or adhesive to install the protection plate inside the housing 1.

[0034] The vertical plate 42 is connected to the edge of the horizontal plate 41 and extends between the battery module 3 and the side wall of the housing 1. Specifically, in this embodiment, a vertical plate 42 is connected to each of the two opposite edges of the horizontal plate 41. The opposite arrangement of the two vertical plates 42 not only allows the vertical plates 42 to extend along the width direction of the battery module 3 (e.g., ...) Figure 1The battery module 3 is limited by the X-axis (as shown in the middle), and the expansion of the battery cells in the battery module 3 is also limited.

[0035] Optionally, in some embodiments, the mounting bracket 4 can also be a split structure assembled from a horizontal plate 41 and a vertical plate 42. Compared to a one-piece connected horizontal plate 41 and vertical plate 42, the mounting bracket 4 formed by assembling the horizontal plate 41 and vertical plate 42 can achieve compatibility with battery boxes of different specifications by replacing horizontal plates 41 or vertical plates 42 of different sizes, which helps to reduce structural costs. Exemplarily, the horizontal plate 41 and vertical plate 42 are connected by snap-fit ​​structures, threaded structures, etc., and horizontal plates 41 of different sizes and vertical plates 42 of different sizes can be connected by snap-fit ​​structures or threaded structures to form the mounting bracket 4.

[0036] It should be noted that, compared to existing technologies using bolts and other fixing structures, the vertical plate 42, being plate-shaped, requires significantly less installation space (see reference). Figure 3 (as shown in the medium dimension n). For example, in this embodiment, the distance between the battery module 3 and the circumferential sidewall is less than 10mm, which can greatly reduce the size of the entire battery box.

[0037] Furthermore, the mounting bracket 4 includes a vertical plate 42, which has a concave-convex structure and is embedded within the potting compound curing component 2. The concave-convex structure is used to improve the connection strength and firmness between the vertical plate 42 and the potting compound curing component 2. In this embodiment, the optional concave-convex structure can be a hole, a groove, a protrusion, or various other shapes of concave-convex structures.

[0038] For example, such as Figure 2 , Figure 3 As shown, the protrusion includes a baffle 423, which is angled to the vertical plate 42, and the outer surface of the baffle 423 can be positioned to abut against the cured potting compound 2. Optionally, the baffle 423 and the vertical plate 42 are bent at 90°, with the baffle 423 bent towards the side away from the battery module 3. The 90° bend allows the baffle 423 to abut against the cured potting compound 2 with a larger area in the vertical direction, thereby achieving a better fixing effect. Bending towards the side away from the battery module 3 can prevent the baffle 423 from puncturing the cured potting compound 2 and damaging the battery module 3 when the battery module 3 expands, thus avoiding risks such as short circuits, fires, and explosions. Of course, in some other embodiments, protrusions of other shapes such as hemispherical or cylindrical can also be provided, or the baffle 423 can be installed on the vertical plate 42 at other angles. As long as it can achieve the effect of limiting and abutting, it falls within the scope of protection of this utility model.

[0039] Preferably, taking baffle 423 as an example, in this embodiment, at least two baffles 423 are provided on the vertical plate 42. Multiple baffles 423 are arranged horizontally (as shown by the Y-axis in the figure), and a notch 424 is formed between adjacent baffles 423, allowing the potting compound cured component 2 to fill into the notch 424. This arrangement facilitates the potting compound cured component 2 to fill well between the battery module 3 and the circumferential sidewall, reducing voids and preventing the baffles 423 from weakening the structural strength of the potting compound cured component 2. This ensures both the connection strength and safety between the baffles 423 and the potting compound cured component 2, as well as the structural strength of the potting compound cured component 2 after curing.

[0040] Continue to refer to Figures 2 to 4 As shown, in this embodiment, pores or grooves are provided on the vertical plate 42, and the pores or grooves are arranged along the thickness direction of the vertical plate 42 (as shown by the X-axis in the figure). The inner wall of the pores or grooves can limit and abut against the cured potting compound 2. Specifically, in this embodiment, the pores are provided through the vertical plate 42, including at least one of a waist-shaped hole 421, a round hole, and a semi-circular hole 422. The grooves are provided non-through the vertical plate 42, and can be provided on the side of the vertical plate 42 away from the battery module or on the side of the vertical plate 42 close to the battery module. Taking the pores as an example, the waist-shaped hole 421 or the round hole is provided at a non-edge position of the vertical plate 42, has a complete inner wall, and the potting compound can only enter the waist-shaped hole 421 or the round hole along the thickness direction of the vertical plate 42. The semicircular hole 422 is located at the edge of the vertical plate 42 and does not have a complete inner wall. Therefore, the potting compound can enter the semicircular hole 422 along the thickness direction of the vertical plate 42 or along the length direction of the vertical plate 42 (as shown by the Y-axis in the figure).

[0041] Furthermore, in this embodiment, the mounting bracket 4 is integrally formed with the aforementioned baffle 423, oblong hole 421, and semi-circular hole 422. The baffle 423 and oblong hole 421 are spaced apart vertically, multiple baffles 423 are arranged horizontally, and multiple oblong holes 421 are also arranged horizontally, with the baffles 423 and oblong holes 421 alternating. This significantly increases the interlocking area between the vertical plate 42 and the potting compound cured component 2, enhancing the overall fixing strength of the battery box. Of course, in some other embodiments, multiple protrusions and holes or grooves are alternately arranged horizontally, while these protrusions and the aforementioned holes or grooves are spaced apart vertically. This also significantly increases the interlocking area between the vertical plate 42 and the potting compound cured component 2, and is also within the scope of protection of this utility model.

[0042] Of course, in some other embodiments, any one or any two of the baffle 423, the waist-shaped hole 421 and the semi-circular hole 422 can be provided. As long as they can improve the bonding strength and firmness between the vertical plate 42 and the potting compound curing component 2, they are within the scope of protection of this utility model.

[0043] This embodiment also provides a battery box, including a box body 1, a battery module 3 housed in the box body 1, and the aforementioned internal fixing structure, which fixes the battery module 3 inside the box body 1. This internal fixing structure effectively secures the battery module 3, ensuring structural stability and safety, while eliminating the need for bolts or other fixing structures. This allows for a reduction in the size and weight of the battery box, enhancing its portability and lightweight design.

[0044] Example 2:

[0045] This utility model also provides an internal fixing structure for a battery box. Compared with Embodiment 1, the difference in this internal fixing structure is that the mounting bracket 4 includes one horizontal plate 41 and four vertical plates 42. The four vertical plates 42 are respectively connected to one side edge of the horizontal plate 41, and every two vertical plates 42 are arranged opposite each other. Simultaneously, all four vertical plates 42 can be embedded into the potting compound curing component 2, and each has a concave-convex structure. The concave-convex structure also includes pores (e.g., at least one of baffle 423, oblong hole 421, or semi-circular hole 422), grooves, and protrusions, etc. Since this mounting bracket 4 has more vertical plates 42 than Embodiment 1, it can also have a greater number of concave-convex structures, thereby further strengthening the connection strength and stability between the mounting bracket 4, the potting compound curing component 2, and the box body 1, and further improving the structural stability and safety of the battery box.

[0046] Of course, in some other embodiments, vertical plates 42 may be provided only at one edge of the horizontal plate 41, or vertical plates 42 may be provided at three or four edges of the horizontal plate 41. As long as the vertical plates 42 can be embedded in the potting compound curing component 2 and serve to fix the mounting bracket 4, they all fall within the scope of protection of this utility model. Compared to providing three or four vertical plates 42, providing only two vertical plates 42 can achieve a better fixing effect and avoid excessive overall weight, thereby ensuring the overall structural strength and lightweight of the battery box.

[0047] In the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0048] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A battery box internal fixing structure, disposed inside the battery box, characterized in that, The battery box includes a housing (1) for accommodating a battery module (3), and the internal fixing structure of the battery box includes: A potting compound cured component (2) is disposed between the inner surfaces of the battery module (3) and the housing (1); Mounting bracket (4) is used to limit and abut against the battery module (3). Part of the mounting bracket (4) is embedded in the potting compound curing component (2). The potting compound curing component (2) forms a fixed connection between the housing (1) and the mounting bracket (4) to fix the battery module (3) in the housing (1).

2. The internal fixing structure of the battery box according to claim 1, characterized in that, The mounting bracket (4) includes a vertical plate (42), which has a concave-convex structure and is embedded in the potting compound curing component (2). The concave-convex structure is used to increase the connection strength between the vertical plate (42) and the potting compound curing component (2).

3. The internal fixing structure of the battery box according to claim 1, characterized in that, The mounting bracket (4) includes a vertical plate (42), which is provided with holes or grooves. The holes or grooves are arranged along the thickness direction of the vertical plate (42), and the inner wall of the holes or grooves can be limited to abut against the cured potting compound (2) after curing.

4. The internal fixing structure of the battery box according to claim 1, characterized in that, The mounting bracket (4) includes a vertical plate (42), which has a protrusion. The outer surface of the protrusion can be positioned to abut against the cured potting compound (2).

5. The internal fixing structure of the battery box according to claim 4, characterized in that, The vertical plate (42) is provided with at least two protrusions, and a notch (424) is provided between two adjacent protrusions, and a portion of the potting compound curing component (2) is provided in the notch (424).

6. The internal fixing structure of the battery box according to claim 2, characterized in that, The concave-convex structure includes at least two protrusions and at least two holes or grooves disposed on the vertical plate (42). In the horizontal direction, the protrusions and the holes or grooves are alternately arranged, and in the vertical direction, the protrusions and the holes or grooves are spaced apart.

7. The internal fixing structure of the battery box according to claim 1, characterized in that, The potting compound curing component (2) is provided between the circumferential sidewalls of the battery module (3) and the housing (1), and the distance between the circumferential sidewalls of the battery module (3) and the housing (1) is less than 10 mm.

8. The internal fixing structure of the battery box according to claim 1, characterized in that, The mounting bracket (4) includes a horizontal plate (41) and at least two vertical plates (42), with one of the vertical plates (42) connected to each of the two oppositely arranged edge positions of the mounting bracket (4).

9. The internal fixing structure of the battery box according to any one of claims 1-8, characterized in that, The mounting bracket (4) is a one-piece molded structure.

10. A battery box, characterized in that, The battery box includes a box body (1), a battery module (3) housed in the box body (1), and an internal fixing structure for the battery box according to any one of claims 1-9, wherein the internal fixing structure for the battery box fixes the battery module (3) inside the box body (1).

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