Split type battery pack upper shell

Abstract

The utility model discloses a split type battery pack upper shell, the upper shell comprises a first cover plate and a second cover plate, the first cover plate and the second cover plate are detachably connected, one side of the second cover plate is provided with a lap joint edge, the lap joint edge is arranged above one side of the first cover plate, a sealing structure is arranged between the lap joint edge and the first cover plate, and the lap joint edge and the first cover plate are detachably connected. The split type battery pack upper shell is simple in structure and convenient to install, the number of fasteners is reduced, and the manufacturing cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of batteries, and specifically relates to a split battery pack upper shell. Background Art

[0002] With the upgrading of technology, CTC battery packs have become the mainstream research direction of the market. The battery pack format is transformed from modules to cells directly placed in the vehicle chassis. The technological upgrade has also brought about changes in the supply relationship. The upper shell assembly process originally completed by the battery pack manufacturer has been transferred to the OEM.

[0003] At present, the upper shell of the power battery pack, the seat crossbeam and the car seat are connected into an assembly. After the lower shell of the battery pack is installed, the upper shell is installed from the bottom of the body-in-white upwards. Since the whole vehicle installation production line of the OEM is blocked by the car door, skylight glass and windshield, the installation space is limited, and the upper shell of the battery pack does not have the assembly conditions along the body-in-white production line. Therefore, the battery pack cover cannot be assembled online, and a separate production line needs to be established, which has high manufacturing costs. In addition, the current battery pack cover has a large number of fasteners. When the battery pack fails, it is difficult to disassemble it after sales. The time-consuming production seriously reduces the production line rhythm and increases the weight of the vehicle.

[0004] The utility model patent with announcement number CN216980746U was disclosed on July 15, 2022. The name is a split battery case, which includes a cover body and a lower box body. The outer side of the lower box body is symmetrically installed with a fixing seat, and a card slot is opened on the fixing seat. A sliding hole is provided on one side of the card slot, and the sliding hole is connected to the card slot. A fixing component is provided in the sliding hole. The fixing component includes a threaded sleeve and a threaded rod. An insert is provided at one end of the threaded rod. A reset spring is sleeved on the outer wall of the threaded rod, and a cover plate is symmetrically installed on the outer side of the cover body, and a card plate is installed at the bottom of each cover plate. The split battery case has a complex structure, high manufacturing cost, and inconvenient assembly and disassembly. Utility Model Content

[0005] The purpose of the utility model is to provide a split battery pack upper shell with a simple structure, convenient installation, reduced number of fasteners and lower manufacturing cost in view of the deficiencies in the prior art.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] The split battery pack upper shell comprises a first cover plate and a second cover plate, wherein the first cover plate and the second cover plate are detachably connected, a lap edge is provided on one side of the second cover plate, the lap edge is provided above one side of the first cover plate, and a sealing structure is provided between the lap edge and the first cover plate.

[0008] The sealing structure includes compressed foam, which is arranged on the first cover plate and located at the bottom of the overlapping edge; a sealing bolt is connected between the overlapping edge and the first cover plate, a nut is arranged on the sealing bolt, and the sealing bolt presses the overlapping edge.

[0009] The compressed foam is adapted to the size of the overlapped edge, and the sealing bolts are arranged at equal intervals on the overlapped edge.

[0010] The first cover plate and the second cover plate are both provided with seat cross beams, the seat cross beams are symmetrically arranged about the overlapping edges, and the upper ends of the seat cross beams are provided with connecting holes.

[0011] The cross section of the seat cross beam is in a "X"-shaped structure, and reinforcing ribs are arranged on the inner side of the seat cross beam.

[0012] The first cover plate and the second cover plate are located in the same plane, and both the first cover plate and the second cover plate are square structures.

[0013] The sealing bolt comprises an extrusion portion, the extrusion portion is in contact with the overlapping edge, and the size of the extrusion portion is larger than the size of the top of the sealing bolt.

[0014] The ends of the first cover plate and the second cover plate are both provided with an adhesive layer.

[0015] The technical effect of the utility model is as follows: the split upper shell of the battery pack of the utility model is adopted, and the upper shell of the battery pack is divided into two cover plates by split design. The two cover plates are assembled by overlapping and bolting, which is convenient for installation and positioning, and at the same time reduces the number of a large number of fasteners, reduces the weight of the whole vehicle, and is beneficial to the lightweight design of the vehicle body. The battery pack is sealed by the sealing effect of compressed foam between the cover plates; it has a detachable function, and the required parts can be disassembled and replaced separately, thereby increasing the detachable and maintainable nature of the battery pack and solving the problem that the upper shell of the battery pack is difficult to disassemble after sales; at the same time, the part size of the upper shell of the battery pack is greatly reduced, and free entry and exit from the door, roof skylight or windshield installation is realized; the upper shell of the battery pack is produced on the body-in-white assembly production line and assembled online, which is beneficial to the processing and forming of parts and saves the manufacturing cost of a separate production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] This specification includes the following drawings, which show the following contents:

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the upper shell of the split battery pack of the utility model;

[0018] Figure 2 It is a side structural schematic diagram of the upper shell of the split battery pack of the utility model;

[0019] Figure 3It is a schematic diagram of the top structure of the split battery pack upper shell of the utility model;

[0020] Figure 4 It is a schematic diagram of the connection between the first cover plate and the second cover plate of the utility model.

[0021] Marked in the figure are: 1. First cover plate; 2. Second cover plate; 3. Overlap edge; 4. Compressed foam; 5. Sealing bolt; 6. Nut; 7. Seat crossbeam; 8. Connecting hole; 9. Reinforcing rib; 10. Extrusion part; 11. Adhesive layer. DETAILED DESCRIPTION

[0022] The specific implementation methods of the utility model are further explained in detail below with reference to the accompanying drawings through the description of embodiments, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention and to facilitate their implementation.

[0023] like Figures 1 to 4 As shown, the split battery pack upper shell includes a first cover plate 1 and a second cover plate 2, the first cover plate 1 and the second cover plate 2 are detachably connected, a lap edge 3 is provided on one side of the second cover plate 2, the lap edge 3 is provided above one side of the first cover plate 1, and a sealing structure is provided between the lap edge 3 and the first cover plate 1. The first cover plate 1 and the second cover plate 2 are connected by bolts to realize a split and detachable connection form, so the size of the individual component parts of the upper shell is greatly reduced, which is conducive to processing and forming, and can be freely entered and exited from the door, roof canopy or windshield installation. It can be assembled online with the general assembly production line, saving the manufacturing cost of a separate production line, and the split design can also facilitate maintenance and replacement; the lap edge 3 is formed by stamping or bending one side of the second cover plate 2, and the second cover plate 2 is overlapped on the first cover plate 1 during installation, and the installation positioning is accurate. The two cover plates are sealed by compressing the foam 4 to achieve the sealing requirements of the battery.

[0024] like Figure 4 As shown, the sealing structure includes compressed foam 4, which is arranged on the first cover plate 1 and is located at the bottom of the overlapping edge 3; a sealing bolt 5 is connected between the overlapping edge 3 and the first cover plate 1, and a nut 6 is arranged on the sealing bolt 5, and the sealing bolt 5 presses the overlapping edge 3. The compressed foam 4 is fixed to the first cover plate 1 by double-sided tape to seal the first cover plate 1 and the second cover plate 2; the compressed foam 4 has good sealing performance, which can effectively prevent moisture or dust from entering the battery pack to ensure the normal use of the battery. By combining the compressed foam 4 with the overlapping edge 3, the compressed foam 4 has an elastic buffering effect, which can make the tightening force of the sealing bolt 5 more evenly distributed, avoid the extrusion deformation caused by the contact of the overlapping parts of the two cover plates, and ensure that the first cover plate 1 and the second cover plate 2 are in the same plane after being connected, so as to ensure the flatness of the seat crossbeam 7. The compressed foam 4 is easy to cut into a specified shape and has good applicability.

[0025] like Figure 4 As shown, the compressed foam 4 is matched with the overlapping edge 3 in size, and the sealing bolts 5 are arranged at equal intervals on the overlapping edge 3. The compressed foam 4 matched with the overlapping edge 3 in size can form a uniform sealing effect on the overlapping part of the first cover plate 1 and the second cover plate 2 under the tightening action of multiple sealing bolts 5.

[0026] like Figures 1 to 3 As shown, the first cover plate 1 and the second cover plate 2 are both provided with a seat crossbeam 7, which is symmetrically arranged about the overlap edge 3, and a connection hole 8 is arranged at the upper end of the seat crossbeam 7. The upper shell of the battery pack is divided into two cover plates along the direction of the seat crossbeam 7, so the split upper shell design will not affect the setting of the seat crossbeam 7. There are multiple connection holes 8, which are used to install the seat. The seat crossbeam 7 is used to provide an installation position for the car seat. The first cover plate 1 and the second cover plate 2 are each provided with a seat crossbeam 7. The two seat crossbeams 7 are supported at the same time to improve the stability of the seat installation.

[0027] like Figure 2 As shown, the cross section of the seat beam 7 is a "F"-shaped structure, and a reinforcing rib 9 is provided on the inner side of the seat beam 7. The seat beam 7 of the above structure can be easily installed on the battery upper housing, and the arrangement of the reinforcing rib 9 improves the structural strength of the seat beam 7, prevents deformation due to excessive load, and is conducive to maintaining a stable posture of the seat.

[0028] like Figure 2 As shown, the first cover plate 1 and the second cover plate 2 are in the same plane, and both the first cover plate 1 and the second cover plate 2 are square structures. The two cover plates are designed to be coplanar to improve the fit of the lower shell of the battery pack, ensuring that the battery pack has no gaps and good sealing, and also ensuring the accurate position of the two base beams. The two cover plates are designed as a square structure, which can greatly reduce the production and processing costs. The structure is simple and the weight can be reduced, which meets the lightweight requirements of automotive parts.

[0029] like Figure 4 As shown, the sealing bolt 5 includes an extrusion portion 10, which contacts the lap edge 3, and the size of the extrusion portion 10 is larger than the size of the top of the sealing bolt 5. The provision of the extrusion portion 10 expands the contact area between the sealing bolt 5 and the lap edge 3, which is conducive to dispersing the pressure, preventing damage to the lap edge 3 by causing concave deformation, and extending the service life of the upper shell of the battery pack.

[0030] like Figure 3 As shown, the ends of the first cover plate 1 and the second cover plate 2 are both provided with an adhesive layer 11. The ends of the upper shell of the battery pack are sealed by applying glue, and the upper and lower shells of the battery pack are assembled by bonding, which is conducive to reducing the assembly process, reducing the difficulty of operation, and improving the production rhythm.

[0031] The split battery pack upper shell is divided into two cover plates by splitting the battery pack upper shell into a split design. The two cover plates are assembled by overlapping and bolting, which is convenient for installation and positioning, and reduces the number of fasteners, reduces the weight of the entire vehicle, and is beneficial to the lightweight design of the vehicle body. The battery pack is sealed by the sealing effect of the compressed foam 4 between the cover plates; it has a detachable function, and the required parts can be removed and replaced separately, thereby increasing the detachable and maintainable nature of the battery pack and solving the problem that the battery pack upper shell is difficult to disassemble after sales; at the same time, it greatly reduces the size of the parts of the battery pack upper shell, and realizes free entry and exit from the door, roof skylight or windshield installation; the battery pack upper shell is produced on the body-in-white assembly line and assembled online, which is beneficial to the processing and forming of parts and saves the manufacturing cost of a separate production line.

[0032] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model; or the above concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A split battery pack upper shell, characterized in that: The upper shell comprises a first cover plate (1) and a second cover plate (2); the first cover plate (1) and the second cover plate (2) are detachably connected; one side of the second cover plate (2) is provided with an overlapping edge (3); the overlapping edge (3) is arranged above one side of the first cover plate (1); and a sealing structure is provided between the overlapping edge (3) and the first cover plate (1).

2. The split battery pack upper housing according to claim 1, characterized in that: The sealing structure comprises a compressed foam (4), wherein the compressed foam (4) is arranged on the first cover plate (1), and the compressed foam (4) is located at the bottom of the overlapping edge (3); a sealing bolt (5) is connected between the overlapping edge (3) and the first cover plate (1), and a nut (6) is provided on the sealing bolt (5), and the sealing bolt (5) presses the overlapping edge (3).

3. The split battery pack upper housing according to claim 2, characterized in that: The compressed foam (4) is matched to the size of the overlapping edge (3), and the sealing bolts (5) are arranged on the overlapping edge (3) at equal intervals.

4. The split battery pack upper housing according to claim 1, characterized in that: The first cover plate (1) and the second cover plate (2) are both provided with a seat crossbeam (7), the seat crossbeam (7) is symmetrically arranged about the overlapping edge (3), and a connecting hole (8) is provided at the upper end of the seat crossbeam (7).

5. The split battery pack upper housing according to claim 4, characterized in that: The cross section of the seat cross beam (7) is in a "X"-shaped structure, and a reinforcing rib (9) is provided on the inner side of the seat cross beam (7).

6. The split battery pack upper housing according to any one of claims 1 to 5, characterized in that: The first cover plate (1) and the second cover plate (2) are located in the same plane, and both the first cover plate (1) and the second cover plate (2) are square structures.

7. The split battery pack upper housing according to claim 2, characterized in that: The sealing bolt (5) comprises an extrusion portion (10), the extrusion portion (10) is in contact with the overlap edge (3), and the size of the extrusion portion (10) is larger than the size of the top of the sealing bolt (5).

8. The split battery pack upper housing according to claim 6, characterized in that: The ends of the first cover plate (1) and the second cover plate (2) are both provided with an adhesive layer (11).

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