Battery pack box body structure

Abstract

The utility model discloses a battery pack box body structure, which belongs to the technical field of batteries, and comprises a box body structure, a flange structure with a first flange edge and a second flange edge, a frame component with a first top edge and a side edge, and a sealing component with a first sealing edge and a second sealing edge. Through the double-layer sealing design of the first sealing edge and the second sealing edge, the sealing performance of the position of the box cover is improved.

Description

Technical Field

[0001] This utility model belongs to the field of battery technology, specifically relating to a battery pack housing structure. Background Technology

[0002] To ensure the safe, stable and efficient operation of the battery, the sealing performance of the battery pack enclosure is particularly important. While the bottom of the battery pack enclosure can be sealed multiple times through components such as liquid cooling plates and bottom protective plates, there is no special sealing design for the enclosure cover, which affects the overall sealing performance of the battery pack enclosure. Utility Model Content

[0003] The purpose of this utility model is to provide a battery pack housing structure to solve the problem of poor sealing performance of the existing battery pack housing cover position mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a battery pack housing structure, comprising:

[0005] Box cover component, the box cover component comprising:

[0006] The cover structure includes a top cover and a vertical edge extending downwards from the outer edge of the top cover;

[0007] The flange structure includes a first flange edge formed by horizontally extending outward from the lower edge of the vertical edge and a second flange edge formed by vertically extending downward from the outer edge of the first flange edge.

[0008] The box structure further includes a frame member, which has the following characteristics:

[0009] The first top edge is spaced from the first flange edge in the vertical direction;

[0010] The side is formed by extending vertically downward from the outer edge of the first top edge, and the second flange edge is located inside the second flange edge in the horizontal direction;

[0011] The housing structure also includes a sealing member, which includes a first sealing edge filled between the first flange edge and the first top edge, and a second sealing edge filled between the second flange edge and the side edge.

[0012] The double-layer sealing design of the first and second sealing edges improves the sealing performance of the lid.

[0013] Furthermore, the flange structure also includes a third flange edge formed by horizontally extending outward from the lower edge of the second flange edge, the frame member also has a second top edge formed by horizontally extending outward from the lower edge of the side edge, and the sealing member also includes a third sealing edge filled between the third flange edge and the second top edge.

[0014] By adding a third sealing edge in conjunction with the first and second sealing edges, a three-layer sealing effect is formed through the three flange edges, sealing components, and frame components, ensuring the overall sealing effect of the enclosure.

[0015] Furthermore, the frame component includes a first frame, the top surface of the first frame is configured as the first top surface, and a portion of the outer side surface of the first frame is configured as the side edge.

[0016] Furthermore, the frame member also includes a second frame, the inner side of which contacts the outer side of the first frame, and the top surface of the second frame is configured as the second top edge.

[0017] Furthermore, the first and second borders are integrally formed.

[0018] By using an integrated first and second frame design, the rigidity of the frame is enhanced while the energy absorption space is increased, thereby improving the lateral compression resistance of the battery pack housing.

[0019] Furthermore, the inner side surface of the first frame and the inner side surface of the vertical edge are coplanar.

[0020] Furthermore, the outer side of the second frame and the outer side of the third flange are coplanar.

[0021] Furthermore, the thicknesses of the first sealing edge, the second sealing edge, and the third sealing edge are equal.

[0022] Furthermore, the sealing component is foam.

[0023] Furthermore, the third flange edge and the third sealing edge are respectively provided with multiple threaded holes spaced at intervals. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall box structure;

[0025] Figure 2 For along Figure 1 Cross-sectional view along the AA direction;

[0026] Figure 3 for Figure 3 Enlarged view of a specific area;

[0027] Figure 4 This is a schematic diagram of the box-shaped components;

[0028] Figure 5 This is a schematic diagram of a sealing component;

[0029] Figure 6 This is a schematic diagram of the border component.

[0030] In the picture:

[0031] 100. Cover structure; 100a. Top cover; 100b. Vertical edge;

[0032] 200, Flange structure; 200a, First flange edge; 200b, Second flange edge; 200c, Third flange edge;

[0033] 300, Border component; 300a, First top edge; 300b, Side edge; 300c, Second top edge; 301, First border; 302, Second border;

[0034] 400, sealing component; 400a, first sealing edge; 400b, second sealing edge; 400c, third sealing edge. Detailed Implementation

[0035] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] A battery pack housing structure, as shown in the reference Figure 1 The main body consists of a lid component and a frame component 300. The lid component includes a cover structure 100 and a flange structure 200. For details, please refer to... Figure 2 and Figure 4 The cover structure 100 includes a top cover 100a arranged in a horizontal direction and a vertical edge 100b extending vertically downward from the outer edge of the top edge. The flange structure 200 includes a first flange edge 200a extending horizontally outward (i.e. away from the top edge) from the lower edge of the vertical edge 100b, a second flange edge 200b extending vertically downward from the outer edge of the first flange edge 200a, and a third flange edge 200c extending horizontally outward from the lower edge of the second flange edge 200b.

[0037] Reference Figure 3 and Figure 6The aforementioned frame member 300 has a first top edge 300a arranged horizontally, a side edge 300b extending vertically downward from the outer edge of the top edge, and a second top edge 300c extending horizontally outward from the lower edge of the side edge 300b. The first top edge 300a is vertically spaced from the first flange edge 200a. The second flange edge 200b and the side edge 300b are horizontally spaced, with the side edge 300b located inside the first flange edge 200a in the horizontal direction. The third flange edge 200c and the second top edge 300c are vertically spaced. This creates a sealing area between the flange structure 200 of the cover member and the frame member 300. Correspondingly, the sealing area is filled with a sealing member 400 (e.g., foam). Specifically, refer to... Figure 3 and Figure 5 The aforementioned sealing component 400 includes a first sealing edge 400a, a second sealing edge 400b, and a third sealing edge 400c. The first sealing edge 400a is pressed against the first flange edge 200a and the first top edge 300a to form a first seal. The second sealing edge 400b is pressed against the second flange edge 200b and the side edge 300b to form a second seal. The third sealing edge 400c is pressed against the third flange edge 200c and the second side edge 300b to form a third seal. The three-seal structure formed by the first sealing edge 400a, the second sealing edge 400b, and the third sealing edge 400c effectively improves the sealing performance of the battery pack box cover. It can match the multiple seals formed by multiple components such as the bottom plate and bottom guard plate of the battery pack box, ensuring the overall sealing performance of the battery pack box.

[0038] In some embodiments, refer to Figure 2 The aforementioned frame member 300 includes a first frame 301 and a second frame 302, wherein the top surface of the first frame 301 is higher than the top surface of the second frame 302, that is, the top surface of the first frame 301 is configured as the first top edge 300a, and the outer side portion of the first frame 301 is configured as the side edge 300b. In some examples, the inner side surface of the first frame 301 and the inner side surface of the side edge 300b in the box structure are coplanar. Correspondingly, the horizontal dimension of the top surface of the first frame 301 is smaller than the horizontal dimension of the first flange edge 200a, so as to form a filling space for the sealing member 400 between the side edge 300b and the second flange edge 200b. Continuing to refer to... Figure 3The inner side of the second frame 302 is in contact with the outer side of the first frame 301. In some examples, the first frame 301 and the second frame 302 are integrally formed, which increases the rigidity and the energy absorption space, greatly improving the lateral compression capability of the battery pack box. At the same time, the top surface of the second frame 302 is formed as the second top edge 300c, and the outer side of the second frame 302 and the outer side of the third flange edge 200c are coplanar, effectively avoiding redundant design of the box structure.

[0039] In some embodiments, refer to Figure 3 The thicknesses of the first sealing edge 400a, the second sealing edge 400b, and the third sealing edge 400c are equal, that is, the distances between the first flange edge 200a and the first top edge 300a, the second flange edge 200b and the side edge 300b, and the third flange edge 200c and the second top edge 300c are equal.

[0040] In some embodiments, the third flange edge 200c of the flange structure 200 and the third sealing edge 400c of the sealing member 400 are provided with multiple threaded holes at equal intervals at corresponding positions, which are used to cooperate with fasteners such as bolts to realize the assembly of the cover member and the frame member 300. Through the tightening action of the bolts, the connection stability of the box structure 100, the flange structure 200, the frame member 300 and the sealing member 400 can be improved, and the sealing effect of the battery pack box can be further improved.

[0041] The assembly process of the above-mentioned box structure is as follows:

[0042] Step 1: Based on the actual requirements of the battery pack, drill bolt holes at corresponding intervals on the third flange edge 200c of the cover component and the third sealing edge 400c of the foam.

[0043] Step 2: Press the first sealing edge 400a of the double-sided adhesive sealing component 400 firmly against the first top edge 300a of the frame component 300, press the second sealing edge 400b of the sealing component 400 firmly against the side edge 300b of the frame component 300, and press the third sealing edge 400c of the sealing component 400 firmly against the second top edge 300c of the frame component 300.

[0044] Step 3: Press the first flange edge 200a of the box cover component tightly against the first sealing edge 400a of the foam, press the second flange edge 200b of the box cover component tightly against the second sealing edge 400b of the foam, and press the third flange edge 200c of the box cover component tightly against the third sealing edge 400c of the foam.

[0045] Step 4: Finally, secure the third flange edge 200c of the cover component, the third sealing edge 400c of the sealing component 400, and the second top edge 300c of the frame component 300 using rivet nuts and bolts.

[0046] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A battery pack case structure, characterized by, include: The box cover component includes a flange structure (200) and a cover structure (100) having a top cover (100a) and a vertical edge (100b). The flange structure (200) includes a first flange edge (200a) formed by horizontally extending outward from the lower edge of the vertical edge (100b) and a second flange edge (200b) formed by vertically extending downward from the outer edge of the first flange edge (200a). The frame member (300) has a first top edge (300a) and a side edge (300b). The first top edge (300a) is spaced apart from the first flange edge (200a) in the vertical direction. The side edge (300b) is formed by extending vertically downward from the outer edge of the first top edge (300a). The second flange edge (200b) is located inside the second flange edge (200b) in the horizontal direction. The sealing member (400) includes a first sealing edge (400a) filled between a first flange edge (200a) and a first top edge (300a) and a second sealing edge (400b) filled between a second flange edge (200b) and a side edge (300b).

2. The battery pack enclosure structure of claim 1, wherein: The flange structure (200) further includes a third flange edge (200c) formed by extending horizontally outward from the lower edge of the second flange edge (200b), the frame member (300) further includes a second top edge (300c) formed by extending horizontally outward from the lower edge of the side edge (300b), and the sealing member (400) further includes a third sealing edge (400c) filled between the third flange edge (200c) and the second top edge (300c).

3. The battery pack enclosure structure of claim 2, wherein: The frame member (300) includes a first frame (301), the top surface of the first frame (301) is configured as the first top edge (300a), and a portion of the outer side surface of the first frame (301) is configured as the side edge (300b).

4. The battery pack enclosure structure of claim 3, wherein: The frame member (300) further includes a second frame (302), the inner side of the second frame (302) is in contact with the outer side of the first frame (301), and the top surface of the second frame (302) is configured as the second top edge (300c).

5. The battery pack enclosure structure of claim 4, wherein: The first frame (301) and the second frame (302) are integrally formed.

6. The battery pack housing structure according to claim 4, characterized in that: The inner side of the first frame (301) and the inner side of the vertical edge (100b) are coplanar.

7. The battery pack housing structure according to claim 4, characterized in that: The outer side of the second frame (302) and the outer side of the third flange edge (200c) are coplanar.

8. The battery pack housing structure according to claim 2, characterized in that: The thicknesses of the first sealing edge (400a), the second sealing edge (400b), and the third sealing edge (400c) are equal.

9. The battery pack housing structure according to claim 1, characterized in that: The sealing component (400) is foam.

10. A battery pack housing structure according to claim 2, characterized in that: The third flange edge (200c) and the third sealing edge (400c) are respectively provided with multiple spaced threaded holes at corresponding positions.

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