High-safety cylindrical battery mounting box

Abstract

A high-safety cylindrical battery mounting box belongs to the technical field of cylindrical batteries, a lower support in the cylindrical battery mounting box is mainly formed by integrally forming and splicing a plurality of multi-union hexagonal mounting blocks, and pressure relief holes are formed in the hexagonal mounting blocks and serve as anti-explosion pressure relief channels of the cylindrical batteries, so that battery anti-explosion valves are prevented from being blocked, and the safety of the cylindrical batteries is improved. Reliable pressure relief cannot be carried out, and adjacent batteries are affected during thermal runaway; in addition, the inner wall of the mounting groove of the lower bracket and the cylindrical battery are mounted in a bonding manner, so that the bonding area is increased, and the bonding strength is improved; and finally, the six-deformation mounting block is also provided with an insulating film, so that the risk that the battery explosion-proof valve is blocked by excessive glue when the lower bracket is glued and bonded is reduced.

Description

Technical Field

[0001] This utility model relates to the field of cylindrical battery technology, and specifically to a highly safe cylindrical battery mounting box. Background Technology

[0002] Currently, 46-series cylindrical lithium batteries are characterized by their large size, requiring a bracket for mounting and securing them within the PACK housing during assembly. The assembly process is as follows: the lower bracket is glued to the PACK housing or base plate (the base plate is installed at the bottom of the PACK housing); the cylindrical battery is then glued into the lower bracket. Traditional lower brackets have the following problems:

[0003] The lack of a pressure relief slot structure means that the cylindrical battery cannot release pressure during thermal runaway, potentially damaging adjacent batteries. Inconsistencies in the bonding process during assembly cause the explosion-proof valve of the cylindrical battery to be blocked by excess adhesive, preventing internal pressure relief through the valve during thermal runaway and resulting in low reliability. In summary, the existing PACK enclosure has a potential safety hazard due to the ineffective operation of the explosion-proof valve after installing cylindrical batteries, necessitating improvements in safety. Utility Model Content

[0004] To address the unreliable operation of the explosion-proof valve on cylindrical batteries after installation in traditional PACK enclosures, this invention provides a highly safe cylindrical battery mounting enclosure.

[0005] A high-safety cylindrical battery mounting box includes a box body, an upper bracket, and a lower bracket. The lower bracket is bonded to the bottom of the box body and reinforced with a threaded connection. The upper bracket is located at the top of the box body, and the cylindrical battery is installed between the lower bracket and the upper bracket. The improvement lies in that the lower bracket is integrally formed and spliced ​​from several multi-unit hexagonal mounting blocks. A circular mounting groove is provided on one side of each hexagonal mounting block. The outer wall of the cylindrical battery is bonded to the inner wall of the mounting groove and then placed within it. A circular pressure relief hole is provided at the center of the bottom of the mounting groove, corresponding to the explosion-proof valve of the cylindrical battery. An insulating film mounting groove is provided on the other side of each hexagonal mounting block, and the insulating film mounting grooves of two adjacent hexagonal mounting block brackets are interconnected.

[0006] Preferably, the center of the insulating film groove is annular, and elongated grooves extend to both sides.

[0007] Preferably, the lower support further includes: an insulating film;

[0008] The insulating film has the same shape and size as the insulating film setting groove. After the insulating film is bonded to the annular position at the center of the insulating film setting groove, it is set in the insulating film setting groove.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] The lower bracket of the cylindrical battery mounting box provided by this utility model is mainly composed of a number of multi-unit hexagonal mounting blocks integrally molded and assembled. Pressure relief holes are provided on the hexagonal mounting blocks as explosion-proof pressure relief channels for the cylindrical battery, preventing blockage of the battery's explosion-proof valve, ensuring reliable pressure release, and avoiding impact on adjacent batteries in case of thermal runaway. Furthermore, the inner wall of the mounting groove of the lower bracket in this utility model is bonded to the cylindrical battery, increasing the bonding area and bonding strength. Finally, an insulating film is also provided on the hexagonal mounting blocks in this utility model, reducing the risk of glue overflowing and clogging the battery's explosion-proof valve during the application of adhesive to the lower bracket. Attached Figure Description

[0011] Figure 1 This is a schematic diagram A of the lower support structure of this utility model;

[0012] Figure 2 This is a schematic diagram (B) of the lower support structure of this utility model;

[0013] Figure 3 This is a schematic diagram of the insulating film structure in this utility model;

[0014] Figure 4 This is a schematic diagram of the bonding of the insulating film in this utility model;

[0015] Figure 5 This is a schematic diagram of the installation of the lower bracket in this utility model;

[0016] Among them, 1-hexagonal mounting block; 2-mounting groove; 3-pressure relief hole; 4-insulating film setting groove; 5-insulating film. Detailed Implementation

[0017] To better understand this utility model, the following description, in conjunction with the accompanying drawings and examples, will further illustrate its contents.

[0018] This embodiment provides a highly safe cylindrical battery mounting box, including a box body, an upper bracket, and a lower bracket. The lower bracket is bonded to the bottom of the box body and reinforced with a threaded connection. The upper bracket is located at the top of the box body, and the cylindrical battery is installed between the lower bracket and the upper bracket. A schematic diagram A of the lower bracket is shown below. Figure 1 As shown in the diagram, the lower support structure is shown in Figure B. Figure 2 As shown in the diagram, the installation schematic of the lower bracket is as follows: Figure 5As shown. The lower bracket is integrally formed and spliced ​​from a number of multi-unit hexagonal mounting blocks 1. In this embodiment, the number of hexagonal mounting blocks 1 can be 2 or more. A circular mounting groove 2 is provided on one side of each hexagonal mounting block 1. After the outer wall of the cylindrical battery is bonded to the inner wall of the mounting groove 2, it is placed in the mounting groove 2. The bonding method between the outer wall of the cylindrical battery and the mounting groove 2 increases the contact area. A circular pressure relief hole 3 is provided at the center of the bottom of the mounting groove 2, corresponding to the explosion-proof valve of the cylindrical battery. When the cylindrical battery experiences thermal runaway, the explosion-proof valve bursts and releases pressure. The pressure relief hole 3 provides a channel for the pressure release process, ensuring the reliable operation of the explosion-proof valve. An insulating film mounting groove 4 is provided on the other side of each hexagonal mounting block 1. The insulating film mounting grooves 4 of two adjacent hexagonal mounting block 1 brackets are interconnected.

[0019] The center of the insulating film groove 4 is circular, and long grooves extend to both sides.

[0020] The lower support also includes: an insulating film 5; a schematic diagram of the structure of the insulating film 5 is shown below. Figure 3 As shown in the diagram. The insulating film 5 has the same shape and size as the insulating film placement groove 4. After the insulating film 5 is bonded to the annular position at the center of the insulating film placement groove 4, it is placed in the insulating film placement groove 4. The bonding diagram of the insulating film 5 is shown in the diagram. Figure 4 As shown, when the cylindrical battery explosion-proof valve bursts, the insulating film 5 ruptures. When the insulating film 5 is bonded to the insulating film setting groove 4, special adhesive is applied to the annular groove and the elongated groove of the insulating film setting groove 4, avoiding application at the pressure relief hole 3 to prevent blockage of the pressure relief hole 3.

[0021] Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

Claims

1. A high-safety cylindrical battery mounting box, comprising a box body, an upper support and a lower support; the lower support is bonded to the bottom of the box body and is threadedly connected and reinforced; the upper support is arranged at the top of the box body, and the cylindrical battery is mounted between the lower support and the upper support, characterized in that, The lower support is integrally formed and assembled by a plurality of hexagonal mounting blocks (1); one side of the hexagonal mounting block (1) is provided with a circular mounting groove (2), and the outer wall of the cylindrical battery is bonded to the inner wall of the mounting groove (2) and is arranged in the mounting groove (2); the center of the bottom of the mounting groove (2) is provided with a circular pressure relief hole (3) corresponding to the explosion-proof valve of the cylindrical battery; the other side of the hexagonal mounting block (1) is provided with an insulation film setting groove (4), and the insulation film setting grooves (4) of the supports of two adjacent hexagonal mounting blocks (1) are in communication with each other.

2. The cylindrical battery mounting case of claim 1, wherein The center of the insulation film setting groove (4) is a circular ring, and long grooves are extended to both sides.

3. The high safety cylindrical battery mounting case according to claim 2, wherein The lower support further comprises an insulation film (5). The insulation film (5) is consistent with the shape and size of the insulation film setting groove (4), and the insulation film (5) is bonded to the circular ring position at the center of the insulation film setting groove (4) and is arranged in the insulation film setting groove (4).

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