Bottom shell with sealing structure for battery module

Abstract

The utility model belongs to the technical field of battery modules, and particularly relates to a bottom shell with a sealing structure for a battery module, which comprises a shell body, a groove and a plug-in groove are arranged at the top end of the shell body, a through hole is arranged on the inner side wall of the shell body, a butt-joint hole is arranged on the surface of a mounting lug of the shell body in a penetrating manner, a reinforcing plate is arranged in the shell body, and the reinforcing plate is arranged in the shell body. And a fixing frame is inserted into the inserting groove, a drying agent is detachably installed on the surface of the fixing frame, and a bolt is connected to the outer side wall of the shell. Through the use of the fixing frame, the drying agent can be driven to be inserted into the inserting groove, and then the drying agent is fixed through the bolts. And then, the sealing gasket is assembled in the groove, and after the shell cover is tightly connected with the shell, the interior of the shell can be sealed. In this way, the drying agent can effectively adsorb damp moisture in the shell, and the dry environment in the shell is kept. And meanwhile, the assembly of the sealing gasket further ensures that the shell is in a sealed state, and external dust is prevented from invading.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery modules, and particularly relates to a bottom case for a battery module with a sealing structure. Background Art

[0002] The bottom case for a battery module is an important component of the battery module. It provides a support structure for components such as battery cells and circuit boards in the battery module, keeps them in a relatively fixed position, and prevents damage due to shaking and collision during transportation, installation, and use. At the same time, the bottom case can resist external physical impacts, dust, moisture, etc., and protect the internal components from the influence of external environmental factors.

[0003] However, after the bottom case for the battery module is assembled with the lid, a significant problem emerges: there are often gaps between the bottom case and the lid. Although these gaps are small, they are sufficient for external dust to enter. Once this dust comes into contact with the battery module, it may adsorb on the surface of the module or even penetrate into the module. This situation is extremely dangerous because the presence of dust will greatly increase the risk of short circuit of the battery module, which may in turn lead to a decline in battery performance, a shortening of the lifespan, and even pose a safety hazard. Summary of the Invention

[0004] The purpose of the utility model is to provide a bottom case for a battery module with a sealing structure, aiming to solve the problem in the prior art that there are often gaps between the existing bottom case and the lid. Although these gaps are small, they are sufficient for external dust to enter. Once this dust comes into contact with the battery module, it may adsorb on the surface of the module or even penetrate into the module. This situation is extremely dangerous because the presence of dust will greatly increase the risk of short circuit of the battery module, which may in turn lead to a decline in battery performance, a shortening of the lifespan, and even pose a safety hazard.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a bottom case for a battery module with a sealing structure, including a housing. A groove and a plug-in slot are opened at the top end of the housing. A through hole is opened on the inner side wall of the housing. A docking hole is penetrated through the surface of the mounting ear of the housing. A reinforcing plate is installed inside the housing. A fixing frame is inserted into the plug-in slot. A desiccant is detachably installed on the surface of the fixing frame. A bolt is connected to the outer side wall of the housing. A sealing gasket is inserted into the groove.

[0006] Preferably, as a bottom case for a battery module with a sealing structure of the utility model, the sealing gasket is in the shape of a "hui" character, and the housing and the lid can form a sealed connection through the sealing gasket.

[0007] Preferably, as a bottom case for a battery module with a sealing structure of the utility model, the bolt threadedly penetrates through the housing and is connected to the fixing frame.

[0008] As a preferred embodiment of the bottom shell for a battery module with a sealed structure according to this utility model, the fixing frame can be detachably and fixedly connected to the shell by bolts.

[0009] As a preferred embodiment of the bottom shell for a battery module with a sealed structure according to this utility model, a fixing block is installed on one side of the shell, a bidirectional threaded rod is assembled inside the fixing block, a threaded sleeve is threadedly connected to the surface of the bidirectional threaded rod, and a limit block is connected to the front end of the threaded sleeve.

[0010] As a preferred embodiment of the bottom shell for a battery module with a sealed structure according to this utility model, the threaded sleeves are symmetrically distributed on the surface of the bidirectional threaded rod, and the threaded sleeves are adapted to the opening of the fixing block.

[0011] As a preferred embodiment of the bottom shell for a battery module with a sealed structure according to this utility model, the limiting block is in the shape of an "L". The limiting block can form a threaded movement with a bidirectional threaded rod through a threaded sleeve. The bidirectional threaded rod can form a rotatable connection with a fixed block through a bearing.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] The desiccant is inserted into the slot using a mounting bracket and then secured with bolts. The sealing gasket is then fitted into the groove, ensuring a tight seal between the cover and the housing. This allows the desiccant to effectively absorb moisture from inside the housing, maintaining a dry environment. Simultaneously, the sealing gasket further ensures a sealed environment, preventing the intrusion of external dust.

[0014] By using a combination of a fixing block, a two-way threaded rod, a threaded sleeve, and a limiting block, the battery module connection wires installed inside the housing can be easily secured and organized. This prevents the connection wires from becoming tangled and messy, improving the neatness and reliability of the battery module connection wires, thereby contributing to the stability and safety of the entire system. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the main structure of the present utility model;

[0017] Figure 2 This is a schematic diagram of the main body disassembled structure of this utility model;

[0018] Figure 3For the present utility model Figure 2 is a schematic enlarged view of part A in the present utility model;

[0019] Figure 4 is a sectional view of the fixed block structure of the present utility model.

[0020] In the figure: 1, housing; 2, groove; 3, insertion slot; 4, through hole; 5, docking hole; 6, reinforcement plate; 7, fixing frame; 8, desiccant; 9, bolt; 10, sealing gasket; 11, fixed block; 12, bidirectional threaded rod; 13, threaded sleeve; 14, limiting block. Specific implementation mode

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1-4 , the present utility model provides the following technical solutions: A bottom shell for a battery module with a sealing structure, including a housing 1, a groove 2 and an insertion slot 3 are opened at the top end of the housing 1, a through hole 4 is opened on the inner side wall of the housing 1, a docking hole 5 is penetrated through the surface of the mounting ear of the housing 1, a reinforcement plate 6 is installed inside the housing 1, a fixing frame 7 is inserted into the insertion slot 3, a desiccant 8 is detachably installed on the surface of the fixing frame 7, a bolt 9 is connected to the outer side wall of the housing 1, and a sealing gasket 10 is inserted into the groove 2.

[0023] During specific use, through the use of the fixing frame 7, the desiccant 8 can be driven to be inserted into the insertion slot 3 and then fixed by the bolt 9. Subsequently, the sealing gasket 10 is assembled in the groove 2. When the shell cover is connected to the housing 1 by screws, in this process, the shell cover is the same as the housing 1. The shell cover is placed on the top of the housing 1, and then the screw passes through the through hole on the shell cover and then through the docking hole (5) of the mounting ear of the housing (1) and is then connected and locked by a nut. The sealing inside the housing 1 can be achieved. In this way, the desiccant 8 can effectively adsorb the moisture in the housing 1 and maintain a dry environment inside the housing 1; at the same time, the assembly of the sealing gasket 10 further ensures that the housing 1 is in a sealed state and prevents the intrusion of external dust.

[0024] Preferably: The sealing gasket 10 is in a "return" shape, and the housing 1 and the shell cover can form a sealed connection through the sealing gasket 10. The bolt 9 threadedly penetrates through the housing 1 and is connected to the fixing frame 7, and the fixing frame 7 and the housing 1 can form a detachable fixed connection through the bolt 9.

[0025] In practical use, during the assembly of the battery module's bottom shell, the operator first holds the fixing bracket 7 and inserts the desiccant 8 into the insertion slot 3, allowing the desiccant 8 to fully absorb moisture. After insertion, the operator takes the bolt 9 and screws it into the housing 1. The bolt 9 penetrates the housing 1 and is securely connected to the fixing bracket 7, further ensuring the stability of the fixing bracket 7 assembly. Next, the operator embeds the sealing gasket 10 into the groove 2, ensuring a tight fit. Subsequently, the shell cover is aligned and tightly connected to the housing 1, with the sealing gasket 10 firmly clamped between them, forming an effective seal that isolates external dust and moisture, ensuring a stable internal environment for the housing 1.

[0026] Next, the operator, holding the mounting bracket 7, precisely inserts the desiccant 8 into the insertion slot 3, allowing the desiccant 8 to fully absorb moisture. After insertion, the operator takes the bolt 9 and screws it into the housing 1. The bolt 9 penetrates the housing 1 and is securely connected to the mounting bracket 7, further stabilizing the structure and improving overall sealing. This interconnected assembly process maintains the dryness and cleanliness of the inside of the housing 1 and significantly improves the safety and reliability of the entire battery module.

[0027] Preferably, a fixing block 11 is installed on one side of the housing 1, and a bidirectional threaded rod 12 is assembled inside the fixing block 11. A threaded sleeve 13 is threadedly connected to the surface of the bidirectional threaded rod 12. A limiting block 14 is connected to the front end of the threaded sleeve 13. The threaded sleeves 13 are symmetrically distributed on the surface of the bidirectional threaded rod 12. The threaded sleeves 13 are adapted to the opening of the fixing block 11. The limiting block 14 is in the shape of an "L". The limiting block 14 can form a threaded movement with the bidirectional threaded rod 12 through the threaded sleeve 13. The bidirectional threaded rod 12 can form a rotatable connection with the fixing block 11 through a bearing.

[0028] In practical use, the operator first rotates the bidirectional threaded rod 12. Due to the threaded connection between the bidirectional threaded rod 12 and the threaded sleeve 13, and the connection between the threaded sleeve 13 and the limiting block 14, the rotational motion of the bidirectional threaded rod 12 is converted into the linear motion of the threaded sleeve 13, which in turn drives the limiting block 14 to move relative to or towards each other. Then, the connecting wire is placed between the fixing block 11 and the two limiting blocks 14. The limiting blocks 14 then fit together through the bidirectional threaded rod 12, and together with the fixing block 11, they form a binding opening, which can easily bind and organize the battery module connecting wires installed in the housing 1. This avoids the scattering and tangling of the connecting wires, improves the neatness and reliability of the battery module connecting wires, and thus helps to improve the stability and safety of the entire system.

[0029] Working principle: First, the operator holds the fixing frame 7 and precisely inserts the desiccant 8 into the insertion slot 3, allowing the desiccant 8 to fully absorb moisture and maintain a dry environment inside the housing 1. After insertion, the operator takes the bolt 9 and screws it into the housing 1. The bolt 9 penetrates the housing 1 and is securely connected to the fixing frame 7, further stabilizing the fixing frame 7 and improving the stability and sealing of the entire structure.

[0030] Subsequently, the operator inserts the sealing gasket 10 into the groove 2, ensuring a tight fit between the two. Next, the cover is aligned with the housing 1 and tightly connected, with the sealing gasket 10 securely clamped between them, effectively isolating external dust and moisture and ensuring a stable internal environment for the housing 1.

[0031] After completing the sealing and fixing work, the next step is to organize the battery module connection wires. The operator first rotates the bidirectional threaded rod 12. Because the bidirectional threaded rod 12 and the threaded sleeve 13 are threadedly connected, and the threaded sleeve 13 is connected to the limiting block 14, the rotational motion of the bidirectional threaded rod 12 is converted into the linear motion of the threaded sleeve 13, causing the limiting blocks 14 to move relative to or towards each other. Then, the connection wires are placed between the fixing block 11 and the two limiting blocks 14. The limiting blocks 14, through the adjustment of the bidirectional threaded rod 12, conform to the connection wires, forming a binding opening together with the fixing block 11, effectively binding and organizing the battery module connection wires installed in the housing 1. This operation avoids the connection wires becoming scattered and tangled, improving the neatness and reliability of the battery module connection wires, and contributing to the stability and safety of the entire system.

[0032] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A bottom shell for a battery module with a sealed structure, comprising a shell (1), characterized in that: A groove (2) and a socket slot (3) are provided at the top end of the housing (1). A through hole (4) is provided on the inner side wall of the housing (1). A docking hole (5) is penetrated through the surface of the mounting ear of the housing (1). A reinforcing plate (6) is installed inside the housing (1). A fixing frame (7) is inserted into the socket slot (3); A desiccant (8) is detachably installed on the surface of the fixing frame (7). A bolt (9) is connected to the outer side wall of the housing (1). A sealing gasket (10) is inserted into the groove (2).

2. The bottom shell for a battery module with a sealed structure according to claim 1, characterized in that: The sealing gasket (10) is in a "return" shape. The housing (1) can be hermetically connected to the housing cover through the sealing gasket (10).

3. The bottom shell for a battery module with a sealed structure according to claim 1, characterized in that: The bolt (9) threadedly penetrates through the housing (1) and can be connected to the fixing frame (7).

4. The bottom shell for a battery module with a sealed structure according to claim 1, characterized in that: The fixing frame (7) can be detachably and fixedly connected to the housing (1) through the bolt (9).

5. The bottom shell for a battery module with a sealed structure according to claim 1, characterized in that: A fixing block (11) is installed on one side of the housing (1). A bidirectional threaded rod (12) is assembled inside the fixing block (11). A threaded sleeve (13) is threadedly connected to the surface of the bidirectional threaded rod (12). A limiting block (14) is connected to the front end of the threaded sleeve (13).

6. The bottom shell for a battery module with a sealed structure according to claim 5, characterized in that: The threaded sleeves (13) are symmetrically distributed on the surface of the bidirectional threaded rod (12). The threaded sleeve (13) is adapted to the opening of the fixing block (11).

7. The bottom shell for a battery module with a sealed structure according to claim 5, characterized in that: The limiting block (14) is in an "L" shape. The limiting block (14) can perform a threaded movement with the bidirectional threaded rod (12) through the threaded sleeve (13). The bidirectional threaded rod (12) is rotationally connected to the fixing block (11) through a bearing.

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